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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 6679. Отображено 100.

04-10-2012 дата публикации

System and Method for Formation of Biodegradable Ultra-Porous Hollow Fibers and Use Thereof

Номер: US20120248658A1

Автор: Roland Ostapoff, Seth Gleiman

Принадлежит: COVIDIEN LP

A system and method for forming biodegradable ultra-porous hollow fibers are disclosed. The fibers are formed by electrospinning a liquid polymer composition (e.g., solution) of a high molecular weight aliphatic polyester in a controlled environment.

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Номер записи: 1

21-03-2013 дата публикации

Tissue treatment systems and methods having a non-tactile-stimulus-activated, macroscopically-deforming material

Номер: US20130072850A1

Автор: Christopher Brian Locke, Timothy Mark Robinson

Принадлежит: Individual

A system for treating a tissue site of a patient includes a dressing filler adapted to be positioned at the tissue site. The dressing filler includes a base and a plurality of nodes extending from the base. The base further includes a plurality of openings disposed in the base. At least one of the plurality of nodes is comprised of a non-tactile-stimulus-activated, macroscopically-deforming (NTSAMD) material.

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Номер записи: 2

18-04-2013 дата публикации

Biopolymer microthreads with microscale surface topographies

Номер: US20130096610A1

Автор: George Pins, Shawn Carey

Принадлежит: George Pins, Shawn Carey

In one aspect, the invention features a textured microthread that includes or is fashioned from a naturally occurring polymer and that has a surface comprising micron-scale ridges with intervening grooves.

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Номер записи: 3

25-04-2013 дата публикации

DOPE FOR SPINNING LYOCELL, METHOD FOR PREPARING LYOCELL FILAMENT FIBER, AND METHOD FOR PREPARING LYOCELL STAPLE FIBER USING THE SAME

Номер: US20130101843A1

Автор: Jeong Jong-Cheol, Jin Sang-Woo, KIM Woo-Chul, Lee Sang-Mok

Принадлежит: KOLON INDUSTRIES, INC.

This disclose relates to dope for spinning lyocell including cotton linter pulp and an aqueous solution of N-methylmorpholine-N-oxide (NMMO), a method for manufacturing lyocell filament fiber using the dope, lyocell filament fiber manufactured by the method, a method for manufacturing lyocell staple fiber using the dope, and lyocell staple fiber obtained by the manufacturing method. According to the present invention, fiber that exhibits a low orientation degree and fibrillation degree, and a high elongation, and thus may be applied for fiber for high grade clothing, may be provided without conducting additional processes. 1. A dope for spinning lyocell , comprising:cotton linter pulp; andan aqueous solution of N-methylmorpholine-N-oxide (NMMO).2. The dope for spinning lyocell according to claim 1 , comprising:6 to 16 wt % of the cotton linter pulp; and84 to 94 wt % of the aqueous solution of N-methylmorpholine-N-oxide.3. The dope for spinning lyocell according to claim 1 , wherein the aqueous solution of N-methylmorpholine-N-oxide comprises N-methylmorpholine-N-oxide and water in a weight ratio of 91:9 to 83:17.4. The dope for spinning lyocell according to claim 1 , wherein the cotton linter pulp comprises 99 wt % or more of alpha-cellulose.5. A method for manufacturing lyocell filament fiber claim 1 , comprising: discharging the spinning dope according to from a spinner;passing the discharged dope through a coagulation bath to coagulate it into a filament;washing the filament that has passed through the coagulation bath; anddrying the washed filament.6. The method for manufacturing lyocell filament fiber according to claim 5 , wherein the discharging of the spinning dope from a spinner is conducted at 80 to 130° C.7. The method for manufacturing lyocell filament fiber according to claim 5 , wherein the drying of the washed filament comprises applying tension of 0.1 to 1 g/d to the filament at 80 to 200° C.8. Lyocell filament fiber manufactured from the spinning ...

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Номер записи: 4

16-05-2013 дата публикации

Porous hollow fiber

Номер: US20130118981A1

Автор: Christoph Nover, Claudia Hinueber, Marijan Vucak, Roland Vogel

Принадлежит: Schaefer Kalk GmbH and Co KG

Porous hollow fibers comprising first pores having an average length in the range from 0.045 μm to 120 μm and an average width in the range from 0.030 μm to 20 μm, measured in a fiber direction, wherein the ratio of the average length of the first pores to the average width of the first pores is at least 1.5:1, second pores having an average length in the range from 0.1 nm to 99 nm and an average width in the range from 1 nm to 20000 nm, measured in the direction of the fiber in each case, wherein the ratio of the average length of the second pores to the average width of the second pores is not more than 1:1.5. Preferred application areas include use in fillings, in selectively permeable membranes, for the immobilization of enzymes and/or cells, for hemodialysis, and for storage of hydrogen.

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Номер записи: 5

04-07-2013 дата публикации

METHOD TO MAKE YARN-REINFORCED HOLLOW FIBER MEMBRANES AROUND A SOLUBLE CORE

Номер: US20130168007A1

Автор: Cote Pierre, Pedersen Steven Kristian

Принадлежит:

Disclosed is the method for creating a reinforced hollow fiber membrane by applying reinforcing filaments to a core, casting a dope over the filaments and core, forming a membrane from the dope, and removing the core. The core may be a moving core, and the reinforcing yarns may comprise warp yarns and a spiral wrap yarn. The core may be soluble and removed by dissolving it. The core may be pre-wrapped with a yarn before the warp yarns are applied. The resulting reinforcing cage may be pre-shrunk before it is coated with a membrane dope. The pre-wrapped yarn may be removed, for example by dissolving it, after the reinforcing cage is coated. A precursor assembly for making a hollow fiber membrane is also provided. 1. A process of making a reinforced hollow fiber membrane , the process comprising:applying reinforcing filaments to a moving core;casting a dope over the reinforcing filaments and the core;forming a membrane from the dope; andremoving the core.2. The process of claim 1 , wherein the core is soluble and the step of removing the core comprises dissolving the core.3. The process of claim 2 , wherein the core is soluble in water.4. The process of claim 1 , further comprising shrinking the reinforcing filaments before casting the dope over the reinforcing filaments.5. The process of claim 1 , further comprising wrapping the core with pre-wrap filaments before applying the reinforcing filaments to the moving core.6. The process of claim 5 , further comprising a step of removing the pre-wrap filaments after casting the dope over the reinforcing filaments.7. The process of claim 6 , further comprising removing the pre-wrap filaments by dissolving them.8. The process of claim 1 , wherein the moving core is hollow.9. The process of claim 1 , wherein the reinforcing filaments comprise warp filaments and wrap filaments.10. The process of claim 9 , wherein the reinforcing filaments further comprise warp yarns and one or more wrap yarns provided in a continuous spiral ...

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Номер записи: 6

08-08-2013 дата публикации

SUBMERGED HOLLOW FIBER MEMBRANE MODULE

Номер: US20130199994A1

Автор: Jeon You Chul, Kim Dong Seong, LEE Jeong Jae, Lim Seong Han, Mo Chi Joon

Принадлежит: HYOSUNG CORPORATION

The present invention relates to a submerged hollow fiber membrane module that includes a partition membrane having a slanted slit-shaped opening, and thus capable of not only improving operating efficiency of a hollow fiber membrane module by accelerating the water flow, but also allowing easy discharge of highly concentrated raw water around the hollow fiber membrane to the outside of the module during a reverse wash process. 16-. (canceled)7. A submerged hollow fiber membrane module , comprising:an upper header and a lower header which are positioned parallel to each other by a predetermined distance therebetween;hollow fiber membranes arranged in a perpendicular direction between the upper header and the lower header; anda partition membrane provided to enclose the hollow fiber membranes and having slit-shaped openings slanted relative to a longitudinal direction of the hollow fiber membranes,wherein the slit-shaped openings are slanted downwards in an outward direction from an inside of the partition membrane.8. The submerged hollow fiber membrane module of claim 7 , wherein an interval between slits of the openings is 0.1˜30 cm.9. The submerged hollow fiber membrane module of claim 7 , wherein the partition membrane further includes an upper opening at a top portion thereof.10. The submerged hollow fiber membrane module of claim 7 , wherein the hollow fiber membranes are configured such that an average distance between fibers is 0.01˜50 mm.11. The submerged hollow fiber membrane module of claim 7 , wherein cross-flow is formed by virtue of an upward water flow formed in the module.12. The submerged hollow fiber membrane module of claim 7 , wherein the lower header includes an air inlet.13. The submerged hollow fiber membrane module of claim 7 , wherein the slit-shaped openings are slanted at 45° relative to the longitudinal direction of the hollow fiber membranes. The present invention relates to a submerged hollow fiber membrane module, and, more particularly ...

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Номер записи: 7

08-08-2013 дата публикации

Multiple fiber spinning apparatus and method for controlling same

Номер: US20130200544A1

Автор: Byeong Jin Yeang, Dae Young Lim, Min Sun KIM, Sung Won Byun, Wan-Gyu Hahm

Принадлежит: Korea Institute of Industrial Technology KITECH

A multiple fiber spinning apparatus and a method of controlling the same. The apparatus includes an extruding unit, a spin block unit and a spinning nozzle unit. The extruding unit includes extruders that melt, extrude and transfer polymer materials. The spin block unit includes a gear pump unit which has gear pumps connected to each of the extruders. The gear pumps receive the polymer materials from the corresponding extruders and discharge the polymer materials. The spin block unit further includes a flow passage unit which has flow passages connected to the respective gear pumps. The spinning nozzle unit includes spinning nozzles, each of which is connected to one of the gear pumps of each extruder by the corresponding flow passage, so that each spinning nozzle receives the molten polymer materials and spins the polymer materials into a fiber.

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Номер записи: 8

15-08-2013 дата публикации

Tubular fiber membrane with nanoporous skin

Номер: US20130206673A1

Автор: Jackie Y. Ying, Min Hu, Ming Ni, Rensheng Deng

Принадлежит: Agency for Science Technology and Research Singapore

A wet spinning process for forming a tubular fiber membrane is provided. The tubular fiber membrane has a nanoporous skin layer and a microporous lumen layer. The skin layer defines an outer surface of the fiber membrane and the lumen layer defines a lumen surface of the fiber membrane. The pores in the skin layer may have an average pore size of less than about 7 nm, and pores in the lumen layer may have an average pore size of from about 0.5 to about 3 μm. The fiber membranes may be used in artificial renal proximal tubules, artificial kidneys, bioreactors, or fiber cartridges.

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Номер записи: 9

22-08-2013 дата публикации

METHOD OF ELECTROSPINNING FIBRES

Номер: US20130214457A1

Автор: Bennington Stephen, David William Ian Fraser, Jenkins Derek William Kenneth, Kurban Zeynep, Lovell Arthur, Owen-Jones Martin

Принадлежит: THE SCIENCE AND TECHNOLOGY FACILITIES COUNCIL

A method of electrospinning fibres is disclosed. The fibres have an inner core surrounded by a porous outer shell. The method comprises co-electrospinning first and second liquids as core and shell respectively, the second liquid surrounding the first liquid in a jet issuing from a Taylor cone, wherein the first and second liquids are miscible or semi-miscible with each other, such that pore generation is driven in the shell of the fibre. The liquids may be solutions or melts. The electrical conductivity, viscosity, miscibility and other parameters of the liquids determine the structure of the produced fibres. As well as producing fibres having a porous shell there are described methods of co-electrospraying porous beads as well as core-shell vesicles having a porous shell. The methods may be used to produce hydrogen storage fibres, vesicles and beads. The methods may also be used for producing controlled drug-delivery fibres, vesicles and beads. 1. A method of manufacturing a fibre having a porous shell surrounding a core , the method comprising:co-electrospinning first and second liquids as core and shell respectively, the second liquid surrounding the first liquid in a jet issuing from a Taylor cone,wherein the first and second liquids are miscible or semi-miscible with each other, such that pore generation is driven in the shell of the fibre.2. The method of claim 1 , wherein the first liquid has a higher conductivity than the second liquid claim 1 , such that the higher conductivity first liquid of the core drives pore generation in the shell of the fibre.3. The method of claim 1 , wherein the first liquid is a first solution comprising a first material dissolved in a first solvent composition.4. The method of claim 1 , wherein the second liquid is a second solution comprising a second material dissolved in a second solvent composition.5. The method of claim 1 , wherein the first liquid is a first solution claim 1 , and the second liquid is a second solution ...

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Номер записи: 10

29-08-2013 дата публикации

ACTIVATED LEUKOCYTE CONDITIONED SUPERNATANT AND USES FOR WOUND HEALING

Номер: US20130224148A1

Автор: BAIN Eilat, BUBIS Marina, Ginis Irene, SHIRVAN Mitchell

Принадлежит:

Disclosed are therapeutic, activated leukocyte conditioned supernatants, methods of making them, and methods of using the conditioned supernatants to repair or promote healing of wounds. 162-. (canceled)63. A substantially cell-free activated leukocyte-conditioned supernatant (ALCS) , wherein the ALCS is made by(a) obtaining activated leukocytes; contacting the activated leukocytes with an incubation medium to form an incubation composition; incubating the incubation composition at a temperature and time sufficient to increase the concentration of at least one cytokine or growth factor in the incubation composition; and removing leukocytes from the incubation composition to produce a substantially cell-free ALCS activated leukocyte-conditioned supernatant (ALCS), or(b) incubating human leukocytes under conditions of time and temperature to activate the leukocytes; subjecting the leukocytes to hypo-osmotic shock; adding to the leukocytes subjected to the hypo-osmotic shock to a salt solution in an amount which restores isotonicity; separating the leukocytes from the resulting isotonic solution; mixing the separated leukocytes with serum to form an incubation composition; incubating the incubation composition under conditions of time and temperature to increase the concentration of at least one cytokine or growth factor in the incubation composition; and separating the leukocytes and other cellular matter from the incubation composition to produce a substantially cell-free ALCS.64. A substantially cell-free activated leukocyte-conditioned supernatant (ALCS) comprising at least about 1000 pg/mL human IL-8 , at least about 10-20 pg/mL human IL-6 , and at least about 20 pg/mL human TNFalpha.65. The use of the ALCS according to any one of or in the manufacture of a medicament for the treatment of a wound or the inhibition of the onset of infection in a wound; (i) the wound is a decubital ulcer, a pressure ulcer, a lower extremity ulcer, tendonitis, a deep sternal wound, a ...

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Номер записи: 11

12-09-2013 дата публикации

COMPOSITE BIOCOMPATIBLE ARTICLES MADE FROM DOPED POLYSULPHONE FILAMENTS AND A PROCESS FOR MAKING THE SAME

Номер: US20130233787A1

Автор: Bellare Jayesh R., Dahe Ganpat J.

Принадлежит:

This invention relates to articles of high permeability and flux. Particularly useful in dialysis made from filaments produced from a composition of polysulphones and Vitamin ETPGS. This invention also includes a process for producing such articles. 1. Composite biocompatible articles such as fibres , membrane , tubes , sheets and the like having enhanced permeability and high flux made from filaments spun from a composition of polysulphones and Vitamin E polyethylene glycol succinate , ETPGS.2. The composite as claimed in wherein the filaments are spun in a conventional manner and the composition has 5 wt % to 25 wt % of ETPGS based on the weight of polysulphone.3. The composite as claimed in and wherein the polysulphone and the additives are separately dissolved in organic solvents selected from N-methylpyrrolidone claim 1 , dimethylacetamide claim 1 , dimethylformamide claim 1 , dimethylsulphoxide and tetra hydrofuran.4. The article as claimed in to wherein said article has macro porous and nano porous regions located either on the inner or outer surfaces.5. The article as claimed in to wherein the PEG of ETPGS complex has a molecular weight ranging from 400 to 40000 Da.6. A process for preparing hollow filaments for making articles like membranes claim 1 , sheets and tubes comprising the steps of mixing a solution of Vitamin E TPGS to a solution of polysulphone in an organic solvent to produce a homogenous dope solution claim 1 , extruding said dope solution coaxially with water through spinnerets to form hollow filaments claim 1 , passing said filaments through an airgap before coagulating and precipitating the same claim 1 , rinsing and winding the formed filaments and forming shaped articles therefrom in a known manner claim 1 , if desired.7. The process as claimed in claim 6 , wherein the polyethylene glycol of ETPGS complex has a molecular range of 400 to 40000 Da and in present in the range of 1 to 40 wt % based on the total weight of polysulphone or ...

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Номер записи: 12

26-09-2013 дата публикации

PREPARATION METHOD OF HOLLOW FIBER MEMBRANE FOR WATER TREATMENT USING CELLULOSE-BASED RESIN

Номер: US20130248441A1

Автор: Kim Minjoung, Lee Changho, LEE SUMIN, Oh Hyunhwan, Park Jooyoung

Принадлежит: LG ELECTRONICS INC.

The present disclosure relates to a preparation method of a hollow fiber membrane for water treatment that involves preparing a spinning composition including a cellulose-based resin, a poor solvent, a plasticizer, and an organic solvent and then spinning the spinning composition on a nonsolvent to form a hollow fiber membrane. Accordingly, the present disclosure overcomes the drawbacks of the conventional preparation method for hollow fiber membranes and thus provides a nano-filter (NF), reverse osmosis (RO) hollow fiber membrane for water treatment that easily enhances the properties of the separation membrane for water treatment and secures high reproducibility and high efficiency at low costs. 1. A preparation method of a hollow fiber membrane for water treatment using a cellulose-based resin , comprising:preparing a spinning composition comprising a cellulose-based resin, a poor solvent, a plasticizer, and an organic solvent; andspinning the spinning composition to a non-solvent to form a hollow fiber membrane.2. The preparation method as claimed in claim 1 , wherein the cellulose-based resin comprises at least one selected from the group consisting of cellulose acetate claim 1 , cellulose triacetate claim 1 , and cellulose butylate.3. The preparation method as claimed in claim 1 , wherein the poor solvent is ethylene glycol monohexyl ether.4. The preparation method as claimed in claim 1 , wherein the plasticizer is ethylene glycol.5. The preparation method as claimed in claim 1 , wherein the organic solvent is n-methyl-2-pyrrolidone (NMP).6. The preparation method as claimed in claim 1 , wherein the non-solvent is water.7. The preparation method as claimed in claim 1 , wherein the spinning composition comprises 30 to 40 wt. % of the cellulose-based resin claim 1 , 5 to 15 wt. % of the poor solvent claim 1 , 5 to 15 wt. % of the plasticizer claim 1 , and a remaining content of the organic solvent.8. The preparation method as claimed in claim 7 , wherein the ...

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Номер записи: 13

03-10-2013 дата публикации

MULTI-CHANNEL MEMBRANE

Номер: US20130256214A1

Автор: Dahlberg Christian, Müller Erik, Oechsle Dietmar, Wietschorke Werner

Принадлежит: MAHLE International GmbH

A multi-channel membrane, in particular for treatment of liquids, includes at least one outer membrane surface and one inner membrane surface, which forms at least two longitudinally extending inner channels, which are enclosed by the outer membrane surface. 1. A multi-channel membrane , in particular for treatment of liquids , comprising:at least one outer membrane surface; andone inner membrane surface which forms at least two longitudinally extending inner channels, which are enclosed by the outer membrane surface, whereinthe outer membrane surface and the inner membrane surface each form an actively separating layer, anda median pore size of the actively separating layer of the outer membrane surface differs from a median pore size of the actively separating layer of the outer membrane surface.2. The multi-channel membrane as claimed in claim 1 , whereinthe inner membrane surface forms three inner channels.3. The multi-channel membrane as claimed in claim 1 , whereina supporting layer, which is enclosed by the actively separating layer on the outer membrane surface and which encloses the actively separating layer on the inner membrane surface, having an at least substantially constant porosity.4. The multi-channel membrane as claimed in claim 3 , whereina median pore size of the actively separating layers is at least approximately ten times smaller than a median pore size of the supporting layer.5. A spinneret unit claim 1 , in particular for producing a multi-channel membrane as claimed in claim 1 , comprising at least one extrusion unit claim 1 , which forms at least one extrusion space for conducting a polymer solution claim 1 , and comprising at least one internal-fluid feeding-in unit claim 1 , which has at least two channels arranged within the extrusion space for conducting an internal fluid claim 1 , whereinthe internal-fluid feeding-in unit has at least one supporting element, which is arranged within the extrusion space, andthe internal-fluid feeding- ...

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Номер записи: 14

07-11-2013 дата публикации

HOLLOW FIBER MEMBRANE SPINNING NOZZLE, AND METHOD FOR MANUFACTURING HOLLOW FIBER MEMBRANE

Номер: US20130292860A1

Автор: Fujiki Hiroyuki, Hiromoto Yasuo, Maehara Osamu, Sumi Toshinori, TANAKA Masahiro, Teramachi Masashi

Принадлежит: MITSUBISHI RAYON CO., LTD.

A hollow fiber membrane-spinning nozzle that spins a hollow fiber membrane having a porous membrane layer and a support is provided in which the nozzle includes a resin flow channel through which a membrane-forming resin solution forming the porous membrane layer flows, the resin flow channel includes a liquid storage section that stores the membrane-forming resin solution and a shaping section that shapes the membrane-forming resin solution in a cylindrical shape and satisfies at least one of conditions (a) to (c): (a) the resin flow channel is disposed to cause the membrane-forming resin solution to branch and merge; (b) a delay means for delaying the flow of the membrane-forming resin solution is disposed in the resin flow channel; and (c) the liquid storage section or the shaping section includes branching and merging means for the membrane-forming resin solution therein.

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Номер записи: 15

07-11-2013 дата публикации

Washing apparatus, and process for producing porous membrane

Номер: US20130292867A1

Автор: Hiroyuki Fujiki, Kotaro Hiraoka, Toshinori Sumi

Принадлежит: Mitsubishi Rayon Co Ltd

The present invention relates to a method of producing a porous membrane, including a coagulation step of coagulating a membrane-forming raw material solution to form a porous membrane; a washing step of washing the porous membrane to remove material remaining in the porous membrane; a removal step of removing a hydrophilic polymer remaining in the porous membrane, in which the washing step includes transporting a porous membrane so as to contact with a falling washing solution. According to the present invention, it is possible to provide a method of producing a porous membrane capable of efficiently removing a solvent from a porous membrane within a short period of time at a low cost without large facilities; and a washing apparatus used for the production process.

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Номер записи: 16

14-11-2013 дата публикации

METHOD OF PRODUCING A TUBULAR FIBER ARRANGEMENT OF A FIBER-REINFORCED COMPOSITE PART, AND TUBULAR FIBER ARRANGEMENT

Номер: US20130302571A1

Автор: BAUMGART GREGOR, BROCKMANNS KARL-JOSEF, KUEMPERS FRANZ-JUERGEN

Принадлежит:

A method for producing a tubular fiber arrangement of a fiber-reinforced composite part and a tubular fiber arrangement as an intermediate product for a composite part. The local conditions are taken into account in an especially simple and reliable manner with respect to the geometry of the composite part and its load profile. When forming the composite part on a core, the fiber mass supplied during the formation of the tube is proportional to the local circumference of the composite part which results from the diameter. The advancement speed of the core remains substantially constant. 1. A method of producing an intermediate product for a fiber-reinforced composite part , the method which comprises:forming a tubular fiber arrangement on a core having a shape corresponding to the composite part, with a varying cross-sectional shape along a length thereof, the tubular fiber arrangement forming the intermediate product;supplying fibers during a formation of the tubular fiber arrangement with a fiber mass being proportional to a local diameter and circumference of the composite part; andmaintaining an advance speed of the core substantially constant during the supplying and forming step.2. The method according to claim 1 , forming the fiber arrangement from an interlaid scrim.3. The method according to claim 2 , wherein the interlaid scrim comprises longitudinally extending fibers and/or wrap fibers and is tied by an intersecting fiber structure.4. The method according to claim 3 , wherein the intersecting fiber structure is a braided fabric.5. The method according to claim 3 , wherein the intersecting fiber structure is a knitted fabric.6. The method according to claim 1 , which comprises producing the fiber mass that changes depending on the local circumference of the composite part from threads having a lesser or a greater fineness.7. The method according to claim 6 , which comprises processing the threads by removing a predetermined number of fibers from the ...

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Номер записи: 17

05-12-2013 дата публикации

Thermally Insulating Fiber

Номер: US20130323506A1

Автор: FILTEAU Martin, ROCHON Stéphanie

Принадлежит:

The present application relates to a fiber having an elongated body defining a longitudinal axis and at least one cavity. The cavity is positioned symmetrically with respect to a plane containing the longitudinal axis. In addition, an insulating gas, less thermally conductive than air, is trapped in the cavity. 1. A fiber having an elongated body defining a longitudinal axis and at least one cavity defined therein , the at least one cavity being defined symmetrically with respect to a plane containing the longitudinal axis , and an insulating gas trapped in the at least one cavity , the insulating gas being less thermally conductive than air , the at least one cavity being sealed by a coating having a lower permeability to the insulating gas than a material of the body.2. The fiber of claim 1 , wherein the at least one cavity includes a plurality of cavities circumferentially spaced apart and distributed about the longitudinal axis in a symmetrical manner with respect to the plane.3. The fiber of claim 1 , wherein the at least one cavity includes a plurality of spaced apart cavities extending along the longitudinal axis.4. The fiber of claim 1 , wherein the at least one cavity includes a single cavity extending along the longitudinal axis.5. The fiber of claim 4 , wherein the single cavity has a series of chambers interconnected by longitudinally spaced apart reduced diameter portions.6. The fiber of claim 1 , wherein the coating covers an interior surface of the body enclosing the at least one cavity.7. The fiber of claim 1 , wherein the coating covers an exterior surface of the body.8. The fiber of claim 1 , wherein the coating is made of a material having a lower emissivity than that of the material of the body.9. The fiber of claim 1 , wherein the coating is at least partly made of a metal or metal oxide selected from the group consisting of silver claim 1 , aluminum claim 1 , copper claim 1 , gold claim 1 , tin claim 1 , tin oxide claim 1 , indium oxide claim 1 ...

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Номер записи: 18

19-12-2013 дата публикации

Performance Enhancing Additives For Fiber Formation And Polysulfone Fibers

Номер: US20130338297A1

Автор: Cheryl Ford, Jiunn TEO, Leslie Schmidt

Принадлежит: Individual

The present invention relates to the use of additives in processes to form polymeric fibers. These fibers can be formed into membranes with improved middle and/or higher molecular weight solute removal.

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Номер записи: 19

26-12-2013 дата публикации

YARN FILAMENT AND METHOD FOR MAKING SAME

Номер: US20130344331A1

Автор: Corn Joel, Herring Mark Owen, Lavin Shane Kenneth

Принадлежит:

This invention relates to a trilobal filament having at least one axially extending void, preferably one elongated void in each lobe, wherein each lobe has a partial elliptical-shaped profile having a major axis to minor axis of between about 1.04:1 to about 1.12:1, the cross-section has a modification ratio of 1.7 to 2.2, and the total cross-sectional area is 7 to 13 percent void. In a further aspect, this invention is a spinnerette for producing a filament comprising at least one bore group. Each bore group having three leg sections that are divergent from each other by 100° to 130° and each leg section includes two substantially parallel long leg capillary sections extending to an end section having a shoulder that extends inwardly toward a central axis of the long leg capillary sections. 1. A filament comprising a trilobal cross-section and at least one elongated void , wherein each lobe has a partial elliptical-shaped profile having a major axis to minor axis of between about 1.04:1 to about 1.12:1 , wherein each elongated void has an elliptical-shape having a major axis that is oriented at an angle β with respect to the major axis of the respective lobe , wherein the cross-section has a modification ratio of 1.7 to 2.2 , and wherein the total cross-sectional area is between about 5 to 15 percent void.2. The filament of claim 1 , wherein there are three elongated voids.3. The filament of claim 2 , wherein there is one elongated void in each lobe.4. The filament of claim 1 , wherein each lobe has a pair of spaced foci claim 1 , wherein each void has a pair of spaced foci claim 1 , and wherein one foci of the lobe and one foci of the void are positioned in substantially the same cross-sectional position.5. The filament of claim 3 , wherein the angle β ranges from between about 0 degrees (substantially co-axial) to about 60 degrees.6. The filament of claim 3 , wherein the angle β ranges from between about 0 degrees to about 45 degrees.7. The filament of claim 3 , ...

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Номер записи: 20

13-02-2014 дата публикации

DEVICE FOR CLEANING POROUS HOLLOW FIBER MEMBRANE

Номер: US20140041699A1

Автор: Fujiki Hiroyuki, Hiromoto Yasuo, Kurashina Masaki, Sumi Toshinori

Принадлежит: MITSUBISHI RAYON CO., LTD.

The present invention is a device that is for cleaning a porous hollow fiber membrane by running the porous hollow fiber membrane through a cleaning tank containing a cleaning liquid, thus eliminating residual substances in the porous hollow fiber membrane, wherein the inside of the cleaning tank is provided with a duct structure having a hollow fiber membrane running path at which the porous hollow fiber membrane can be continuously run through from an entrance at one end towards an exit at the other end; the duct structure comprises at least two structures that can separate; the duct structure has a running groove, which is formed to at least one structure of the at least two structures, and a branched duct, which pumps or sucks the cleaning fluid to cause the cleaning fluid to flow through; and the branched duct is a duct that is connected to the running groove. By means of the present invention, it is possible to provide a device that is for cleaning a porous hollow fiber membrane and that is highly efficient, is able to be easily maintained, and can dispose the porous hollow fiber membrane easily and efficiently. 1. A device , comprising a duct structure having a hollow fiber membrane running path in which a porous hollow fiber membrane can travel continuously from an inlet at one end side towards an outlet at another end side inside of a cleaning tank , thereby removing a residue inside of the porous hollow fiber membrane in the presence of a cleaning liquid inside the cleaning tankwherein:the duct structure comprises at least two structures that are separable;the duct structure has a running groove formed in at least one structure among the at least two structures, and a branched duct that pressure feeds or suctions the cleaning liquid to circulate the cleaning liquid; andthe branched duct is a duct communicating with the hollow fiber membrane running path.2. The device according to claim 1 , wherein:the hollow fiber membrane running path comprises an ...

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Номер записи: 21

20-02-2014 дата публикации

Article Comprising Calcium for Reducing the Production of TSST-1

Номер: US20140048075A1

Автор: Davis Catherine Cornick, Nemeth Kimberly Ann, Osborn Thomas Ward, Wang Fancheng

Принадлежит: The Procter & Gamble Company

Articles comprising one or more calcium salts are provided. The articles can contain one or more calcium salts in an amount effective to reduce the production of TSST-1 by at least about 50% when measured by the Shake Flask Method. In certain embodiments, the one or more calcium salts can be substantially non-lethal to when measured by the Shake Flask Method, and/or to , and/or when measured by the Maximum Tolerated Dose Test. 1. A vaginal article , comprising:a. a primary absorbent member;b. an overwrap covering at least a portion of the primary absorbent member;c. an optional secondary absorbent member situated proximate a withdrawal end of the primary absorbent member; andd. a withdrawal cord attached to and extending from the primary absorbent member;e. wherein at least one of the overwrap, the optional secondary absorbent member, and the withdrawal cord comprises one or more calcium salts in an amount greater than about 0.009 millimoles of calcium to reduce the production of TSST-1 by at least about 50% when measured by the Shake Flask Method; and{'i': Lactobacillus crispatus, Lactobacillus gasseri', 'Lactobacillus iners, 'f. wherein the one or more calcium salts are substantially non-lethal to , and when measured by the Maximum Tolerated Dose Test.'}2. The vaginal article of claim 1 , wherein the one or more calcium salts are calcium lactate and/or calcium citrate malate.3. The vaginal article of claim 1 , wherein the overwrap comprises the one or more calcium salts.4. The vaginal article of claim 1 , wherein the vaginal article is a tampon.5. The vaginal article of claim 1 , wherein the vaginal article is a pessary.6. A method for manufacturing a vaginal article claim 1 , the method comprising the steps of:a. providing a tampon pledget;b. adding one or more calcium salts to the tampon pledget;c. compressing and/or shaping the tampon pledget into a finished tampon configuration that is different than that of the tampon pledget;d. wherein the one or more ...

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Номер записи: 22

20-03-2014 дата публикации

Method and Device for Producing a Crimped Multifilament Thread

Номер: US20140077408A1

Автор: Hubert Christian, Kaulitzki Marco, Legge Ludger, Lennemann Friedrich, Matthies Claus, Stündl Mathias, Westphal Jan

Принадлежит:

A method and a device for producing a crimped multifilament thread are described. A multiplicity of filaments are extruded by means of a spinning machine, cooled and subsequently treated by a drawing device and a crimping device to form a crimped thread. Before the thread is wound up to form a bobbin, a multiplicity of intertwining knots is produced on the crimped thread by a treatment device. In order to obtain defined patterns of the intertwining knots within the thread, a pulse sequence of compressed air pulses at a predefined frequency is directed at the thread. The treatment device has a controllable blowing means. 1. A method for the production of a crimped multifilament thread comprising:extruding a multiplicity of filaments of at least one polymer melt;after cooling, gathering the multiplicity of filaments into a filament or multiple filament bundles;stretching the filament or the filament bundles;pressing the filament or filament bundles;crimping the filament or filament bundles, forming crimped thread; andcreating a multiplicity of intertwined knots by directing a pulse sequence of compressed air pulses to the thread at a predetermined frequency.2. The method according to claim 1 , wherein the frequency of the pulse sequence of the compressed air pulse is adjusted depending on a thread speed claim 1 , such that claim 1 , on the thread claim 1 , from 5 to 35 of intertwined knots are created per one meter length.3. The method according to claim 2 , further comprising guiding the thread between two driven godets with a thread speed in the range between 2 claim 2 ,000 m/min and 6 claim 2 ,000 m/min.4. The method according to claim 2 , wherein the compressed air pulses are generated by a nozzle ring having a rotationally driven thread guide track and at least one nozzle bore in the thread guide track claim 2 , wherein the thread is guided in the thread guide track and wherein the nozzle bore is connected with a compressed air source by periodic rotation of the ...

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Номер записи: 23

10-04-2014 дата публикации

Fluorinated surfactants and stabilization of polytetrafluoroethylene (ptfe) particles in hollow fiber spin solutions

Номер: US20140096682A1

Автор: Clint P. AICHELE, Imona C. Omole

Принадлежит: Phillips 66 Co

Methods and apparatus relate to recovery of carbon dioxide and/or hydrogen sulfide from a gas mixture. Separating of the carbon dioxide, for example, from the gas mixture utilizes a liquid sorbent for the carbon dioxide. The liquid sorbent contacts the gas mixture for transfer of the carbon dioxide from the gas mixture to the liquid sorbent. Contacting of the sorbent with the gas mixture and/or desorption of the carbon dioxide from the liquid sorbent utilize hollow fiber contactors that have permeable walls and incorporate particles distinct from a remainder of the walls to influence wetting properties of the contactors. Polytetrafluoroethylene particles may be homogenously disposed throughout hollow fiber contactors to influence wetting properties of the contactors.

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Номер записи: 24

10-04-2014 дата публикации

FIBRE

Номер: US20140096784A1

Автор: Banks Andrew John, Day Craig, Travers John

Принадлежит: Celanese Acetate Limited

An apparatus for forming a polycomponent fibre having a first, fibre forming component comprising a polymer, and a second, component comprising an active ingredient that will selectively reduce or remove components of tobacco smoke. The apparatus has a first reservoir for containing the first component, and a second reservoir for containing the dispersion, second solution or liquid. The dispersion, second solution or liquid includes the second component. The apparatus also has a polycomponent spinnerette adapted to coextrude the first component and the second component to form the polycomponent fibre. The apparatus also includes a first conduit for connecting the first reservoir to the spinnerette, and a second conduit for connecting the second reservoir to the spinnerette. 1. An apparatus for forming a polycomponent fibre comprising a first , fibre forming component comprising a polymer , and a second , component comprising an active ingredient that will selectively reduce or remove components of tobacco smoke , the apparatus comprising a first reservoir for containing the first component , a second reservoir for containing the dispersion , second solution or liquid comprising the second component;a polycomponent spinnerette adapted to coextrude the first component and the second component to form a polycomponent fibre;a first conduit for connecting the first reservoir to the spinnerette;a second conduit for connecting the second reservoir to the spinnerette.2. The apparatus according to claim 1 , wherein the spinnerette comprises a plurality of apertures or jets claim 1 , and the apparatus is adapted to form a plurality of fibres.3. The apparatus according to claim 2 , wherein the spinnerette comprises 2 to 600 apertures.4. The apparatus according to further comprising a heating chamber for heating the or each fibre after extrusion.5. The apparatus according to claim 2 , further comprising combining means for combining the plurality of fibres to form an end.6. The ...

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Номер записи: 25

01-01-2015 дата публикации

AIRCRAFT FUEL TANK FLAMMABILITY REDUCTION METHODS AND SYSTEMS

Номер: US20150000523A1

Автор: Grim Alan, Hart Colin W, Jojic Ivana, JR. Donald R., Snow

Принадлежит:

An aircraft fuel tank flammability reduction method includes feeding pressurized air into an air separation module containing an oxygen separation membrane. The method includes contacting the separation membrane with the air feed, permeating oxygen from the air feed through the separation membrane, and producing nitrogen-enriched air from the air separation module as a result of removing oxygen from the air feed. The NEA from the air separation module is substantially cooled in a NEA flow heat exchanger and the substantially cooled, nitrogen-enriched air is fed into the fuel tank on board the aircraft. An aircraft fuel tank flammability reduction system includes a NEA flow heat exchanger configured to cool substantially the nitrogen-enriched air from the air separation module and a fuel tank on board the aircraft configured to receive the cooled nitrogen-enriched air. 1. An aircraft fuel tank flammability reduction method comprising:feeding pressurized air into an air separation module containing an oxygen separation membrane;contacting the separation membrane with the air feed, permeating oxygen from the air feed through the separation membrane, and producing nitrogen-enriched air from the air separation module as a result of removing oxygen from the air feed;substantially cooling the nitrogen-enriched air (NEA) from the air separation module in a NEA flow heat exchanger; andfeeding the substantially cooled, nitrogen-enriched air into the fuel tank on board the aircraft.2. The method of wherein the separation membrane comprises a hollow fiber membrane and the air feed exhibits a normal operating temperature of at least about 100° C. (212° F.).3. The method of further comprising a feed flow heat exchanger receiving the pressurized air from a source for the pressurized air and substantially cooling the air feed upstream from the air separation module.4. The method of further comprising directing a same cooling flow to the NEA flow heat exchanger and the feed flow ...

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Номер записи: 26

06-01-2022 дата публикации

Sterile knitted fabric and method for manufacturing the same

Номер: US20220002919A1

Автор: CHI FEl KUNG

Принадлежит: Individual

A sterile knitted fabric is provided. The sterile knitted fabric is made by the following steps: First, a plurality of nano far infrared antibacterial yarns and a plurality of bamboo charcoal hollow yarns are provided. Next, the nano far infrared antibacterial yarns are interwoven with the bamboo charcoal hollow yarn by a circular knitting machine to form a grey fabric. Next, the grey fabric is through a scouring process to form a scoured fabric. Next, the scoured fabric is through a setting process. The scoured fabric is moved 25 meters per minute for the setting process.

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Номер записи: 27

05-01-2017 дата публикации

METHODS OF ATTACHING A MOLECULE-OF-INTEREST TO A MICROTUBE

Номер: US20170002481A1

Автор: Dror Yael, KUHN Jonathan Charles, ZUSSMAN Eyal

Принадлежит:

A method of attaching a molecule-of-interest to a microtube, by co-electrospinning two polymeric solutions through co-axial capillaries, wherein a first polymeric solution of the two polymeric solutions is for forming a shell of the microtube and a second polymeric solution of the two polymeric solutions is for forming a coat over an internal surface of the shell, the first polymeric solution is selected solidifying faster than the second polymeric solution and a solvent of the second polymeric solution is selected incapable of dissolving the first polymeric solution and the second polymeric solution comprises the molecule-of-interest, thereby attaching the molecule-of-interest to the microtube. An electrospun microtube comprising an electrospun shell, an electrospun coat over an internal surface of the shell and a molecule-of-interest attached to the microtube. 1. A microtube comprising:an electrospun shell,an electrospun coat polymer over an internal surface of said shell and a molecule-of-interest attached to the microtube,wherein said electrospun shell is formed of a first polymeric solution comprising a first solvent and said electrospun coat is formed of a second polymeric solution comprising a second solvent,wherein said second solvent of said second polymeric solution is incapable of dissolving a polymer of said first polymeric solution,wherein said first polymeric solution solidifies faster than said second polymeric solution,wherein said second polymeric solution is capable of wetting said internal surface of said shell during or following solidification of said first polymeric solution,wherein said molecule-of-interest is selected from the group consisting of: a polypeptide, a polynucleotide, a carbohydrate, a polysaccharide, a lipid, a drug molecule, and a small molecule, andwherein said small molecule is selected from the group consisting of a nucleotide base, an amino acid, a nucleotide, an antibiotic, and a vitamin.2. The microtube of claim 1 , ...

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Номер записи: 28

02-01-2020 дата публикации

ARTIFICIAL TURF AND METHOD FOR PREPARING THE SAME

Номер: US20200002899A1

Автор: Qin Faping, Yu Bo, Yu Kang, Zhou Jiahui

Принадлежит: QINGDAO BELLINTURF INDUSTRIAL CO., LTD.

Disclosed is an artificial turf. In the present disclosure, nylon is used as the main material. Through selecting straight fibers and curve fibers with certain cross-sectional shapes, lengths and widths and using the straight fiber and curve fiber together, the obtained grass fibers not only have relatively good temperature resistance, but also good handfeed, wear resistance, anti-aging performance, grass fiber resilience, trampling resistance and grass uprightness. 1. An artificial turf , comprising a base mat , artificial grass fibers clustered on the base mat and a backing layer adhered to the back side of the base mat , wherein the artificial grass fiber comprises a straight fiber and a curve fiber , and the material of the straight fiber is PA , and the material of the curve fiber is at least one selected from PA and PP.2. The artificial turf according to claim 1 , wherein the straight fiber has at least one cross-sectional shape claim 1 , and the curve fiber has at least one cross-sectional shape.3. The artificial turf according to claim 2 , wherein the cross-sectional shape of the straight fiber is one or more selected from diamond shape claim 2 , olive shape claim 2 , rectangle claim 2 , triangle claim 2 , double-diamond shape claim 2 , wave shape claim 2 , ribbed shape claim 2 , three-ribbed shape claim 2 , clover shape claim 2 , hollow shape claim 2 , C shape claim 2 , D shape claim 2 , X shape claim 2 , S shape claim 2 , W shape claim 2 , V shape claim 2 , U shape and M shape claim 2 , and the straight fiber also may be a net-like fiber; the cross-sectional shape of the curve fiber is one or more selected from rectangle claim 2 , diamond shape claim 2 , olive shape and ribbed shape; and the straight fiber and/or the curve fiber have a bright and/or matt surface effect.4. The artificial turf according to claim 2 , wherein the cross-sectional shape of the straight fiber is diamond and/or olive shape claim 2 , and the lengths of two diagonals of the diamond ...

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Номер записи: 29

03-01-2019 дата публикации

Method of preparing a fiber filament capable of being identified, and a method of identifying the fiber filament

Номер: US20190003081A1

Автор: LIANG Yaoheng

Принадлежит:

A composite fiber filament is made by combining an unordinary fiber filament into an ordinary fiber filament, mixing two types of fibers or blending filaments of 38 mm and 51 mm. The composite fiber filament is identified under a microscope by observing the characteristics of the above three methods of making the composite fiber. The composite fiber filament made as such will not lead to environmental unfriendly behavior such as damaging the natural environment. By using yarn including this composite fiber filament, fabric pieces or garments can be tracked of which fiber suppliers they are originated from, thereby providing an easy way of tracking and monitoring during the entire process from fiber supply to the release of finished garment products. 1. A method of preparing a fiber filament capable of being identified and a method of identifying the fiber filament , wherein the fiber filament comprises an ordinary fiber filament having a circular cross section , and an unordinary fiber filament having a Y-shaped or plus-shaped cross section;the method of preparing a fiber filament capable of being identified comprises the following steps: setting an amount of the ordinary fiber filament being used to an amount of the unordinary fiber filament being used as 95%:5%, and then blending the ordinary fiber filament and the unordinary fiber filament together by a spinning machine to form a composite fiber filament;the method of identifying the fiber filament comprises the following steps: cutting the composite fiber filament, and then using a microscope to observe a cross section of the composite fiber filament to identify whether the unordinary fiber filament having the Y shape cross section or the plus-shape cross section exists in the composite fiber filament; the composite fiber filament is therefore being identified and distinguished from a common fiber filament;alternatively, using the microscope to observe parallel surfaces of the composite fiber filament; since a ...

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Номер записи: 30

08-01-2015 дата публикации

METHOD FOR PRODUCTION OF FIBRE FILL

Номер: US20150007924A1

Автор: Larsen Lennart

Принадлежит: LARSEN PRODUCTION APS

A method for producing fibre fill for use as filling material in clothing, sleeping bags, pillows and duvets from a fibre rope () e.g. containing 30,000-80,000 fibres or filaments with a fibre thickness of 0.9-30 dtx, that the fibre rope () is divided into fibre bundles or fibre cords with a relatively large number of fibres or filaments of the magnitude 200-2000 pcs, determined by the dtx of the filaments, and then passing a gluing or welding unit (), e.g. an ultrasound welding head, performing a punctiform gluing or welding together of the filaments, spaced apart about 6-20 mm, the bundles subsequently passing a cutter or scissors () which e.g. is/are controlled synchronously with the welding head () and which shortens the filaments into lengths of about 6-20 mm, after which the shortened fibre down () is either packed in shipping bales or are used directly for blowing into pillows or duvets as filling. Surprisingly it has appeared that the thus produced polymeric, artificial fibre downs appear as a very improved filling material which is capable of continuously maintaining a good filling capability and continuously returning to its original condition at the blowing. 13318201822. A method for producing fibre fill for use as filling material in clothing , sleeping bags , pillows and duvets from a fibre rope () , e.g. containing 30 ,000-80 ,000 fibres or filaments with a fibre thickness of 0.9-30 dtx , characterised in that the fibre rope () is divided into fibre bundles or fibre cords with a relatively large number of fibres or filaments of the magnitude 200-2000 pcs , determined by the dtx of the filaments , and then passing a gluing or welding unit () , e.g. a ultrasound welding head , performing a punctiform gluing or welding together of the filaments spaced apart about 6-20 mm , the bundles subsequently passing a cutter or scissors () which e.g. is controlled synchronously with the welding head () and which shortens the filaments into lengths of about 6-20 mm , ...

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Номер записи: 31

08-01-2015 дата публикации

ANTITHROMBOGENIC HOLLOW FIBER MEMBRANES AND FILTERS

Номер: US20150008179A1

Автор: Chang Weilun, CHEN Hanje, ESFAND Roseita, Mullick Sanjoy, STEEDMAN Mark A.

Принадлежит:

The invention relates to extracorporeal blood circuits, and components thereof (e.g., hollow fiber membranes, potted bundles, and blood tubing), including 0.005% to 10% (w/w) surface modifying macromolecule. The extracorporeal blood circuits have an antithrombogenic surface and can be used in hemofiltration, hemodialysis, hemodiafiltration, hemoconcentration, blood oxygenation, and related uses. 1. A hollow fiber membrane , said hollow fiber membrane comprising a base polymer admixed with from 0.005% to 10% (w/w) surface modifying macromolecule , wherein said hollow fiber membrane is antithrombogenic when contacted with blood.2. The hollow fiber membrane of claim 2 , wherein the thrombi deposition on said surface said hollow fiber membrane is reduced by at least 10% when contacted with blood claim 2 , wherein said hollow fiber membrane has an operating pressure after 4 hours of use that is reduced by at least 10% claim 2 , or wherein said hollow fiber membrane reduces adverse advents in a subject receiving blood passing through said hollow fiber membrane.3. The hollow fiber membrane of claim 2 , wherein said base polymer is selected from the group consisting of a polysulfone claim 2 , a polyacrylonitrile claim 2 , a cellulose acetate claim 2 , a cellulose di- or tri-acetate claim 2 , a polyimide claim 2 , a poly(methyl methacrylate) claim 2 , a polycarbonate claim 2 , a polyamide claim 2 , a polypropylene claim 2 , and a polyethylene.4. The hollow fiber membrane of claim 3 , wherein said base polymer is a polysulfone selected poly(oxy-1 claim 3 ,4-phenylene sulfonyl-1 claim 3 ,4-phenyleneoxy-1 claim 3 ,4-phenyleneisopropylidene-1 claim 3 ,4-phenylene) or polyether sulfone.5. The hollow fiber membrane of claim 1 , further comprising a hydrophilic pore forming agent.6. The hollow fiber membrane of claim 5 , wherein said hydrophilic pore forming agent is selected from polyvinylpyrrolidone claim 5 , ethylene glycol claim 5 , alcohols claim 5 , polypropylene glycol claim ...

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Номер записи: 32

14-01-2016 дата публикации

METHOD FOR PRODUCING HOLLOW FIBER CARBON MEMBRANE

Номер: US20160008770A1

Автор: Ikawa Yusuke, Koda Yutaka, Yamamoto Hirokazu

Принадлежит:

Disclosed is a method for producing a hollow fiber carbon membrane using a hollow fiber carbon membrane-forming material by means of a dry method or dry-wet method comprising a spinning step, a drying step, an infusibilization step, and a carbonization step as basic steps; wherein in the infusibilization step, heat treatment is performed at least two times at different temperatures, with the second temperature being higher than the first temperature. It is preferable that the second heat treatment is performed directly after the first treatment is performed, without once cooling to room temperature. The obtained hollow fiber carbon membrane has improved permeability, without reducing its separation coefficient. 1. A method for producing a hollow fiber carbon membrane using a hollow fiber carbon membrane-forming material by means of a dry method or dry-wet method comprising a spinning step , a drying step , an infusibilization step , and a carbonization step as basic steps;wherein in the infusibilization step, heat treatment is performed at least two times at different temperatures, with the second temperature being higher than the first temperature;in the spinning step, spinning is performed using a water-soluble organic polyamine aqueous solution having a concentration of 10 to 30 wt. % as a core liquid.2. The method for producing a hollow fiber carbon membrane according to claim 1 , wherein in the infusibilization step claim 1 , after the first heat treatment is performed claim 1 , the temperature is changed directly to the second heating temperature without once being cooled to room temperature claim 1 , and the second heat treatment is performed.3. The method for producing a hollow fiber carbon membrane according to claim 1 , wherein in the infusibilization step claim 1 , after the first heat treatment is performed at a heating temperature of 150 to 280° C. claim 1 , the second heat treatment is performed at a heating temperature of 200 to 350° C. claim 1 , ...

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Номер записи: 33

11-01-2018 дата публикации

COMPOSITIONS FOR PREVENTION OF ADHESIONS AND OTHER BARRIER APPLICATIONS

Номер: US20180008666A1

Автор: Ellis-Behnke Rutledge, Kelly Stephen Richard, Norchi Terrence W.

Принадлежит:

A method has been developed of preventing or limiting formation of adhesions by administering to a site in need thereof, in the absence of or after bleeding or leakage of fluid has been substantially stopped, a self-assembling material which forms a barrier to formation of adhesions. 1. A method of preventing or limiting formation of adhesions or scars , comprisingadministering to a site in need thereof, a self-assembling peptidomimetic, in an amount effective inhibit the formation of adhesions or scars.28-. (canceled)9. The method of claim 1 , wherein the peptidomimetic is selected from the group consisting of α-peptides claim 1 , β-peptides claim 1 , γ-peptides claim 1 , δ-peptides claim 1 , and co-polymers thereof.1014-. (canceled)15. The method of claim 9 , wherein the peptidomimetic is an α-peptidomimetic claim 9 , selected from the group consisting of N claim 9 ,N′ linked oligoureas claim 9 , oligopyrrolinones claim 9 , oxazolidin-2-ones claim 9 , azatides and azapeptides.1620-. (canceled)21. The method of claim 1 , wherein the peptidomimetic comprises a copolymer of α-peptides claim 1 , and one or more of β-peptides claim 1 , γ-peptides claim 1 , or δ-peptides.2224-. (canceled)25. The method of claim 1 , further comprising providing one or more therapeutic agent claim 1 , prophylactic agent claim 1 , diagnostic agent claim 1 , or cells.26. The method of claim 1 , further comprising providing with the self-assembling peptidomimetic a pharmaceutically acceptable carrier or matrix or support material for administration onto or into the body.27. The method of wherein the self-assembling peptidomimetic and pharmaceutically acceptable carrier or matrix or support material are administered as a dry powder claim 26 , liquid claim 26 , as a coating on a medical device or implant claim 26 , or incorporated into hydrogels claim 26 , or sponges.28. The method of claim 1 , comprising applying the self-assembling peptidomimetic to a burn.29. The method of claim 1 , ...

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Номер записи: 34

14-01-2016 дата публикации

AN APPARATUS FOR PRODUCING NANO-BODIES

Номер: US20160010242A1

Автор: COLLINS Paul, GEORGE Ross John, KIRKLAND Mark, SUTTI Alessandra

Принадлежит:

An apparatus for producing a body, preferably a nano-body, through the introduction of a body-forming fluid into a dispersion medium. The apparatus includes: a fluid housing configured to house a dispersion medium; at least two separated flow paths along which the dispersion medium flows in a laminar flow, at least two of the separated flow paths converging at a flow-merge location; a fluid flow arrangement which, in use, causes the dispersion medium to flow along each flow path to the flow-merge location; at least one fluid introduction arrangement located at or proximate the flow-merge location configured, in use, to feed the body-forming fluid into the dispersion medium; and a flow constriction arrangement proximate to or following the flow-merge location, which in use, constricts and accelerates the dispersion medium flow proximate to and/or following the flow-merge location. 1. An apparatus for producing a body through the introduction of a body-forming fluid into a dispersion medium , the apparatus including:a fluid housing configured to house a dispersion medium;at least two separated flow paths along which the dispersion medium flows in a laminar flow, each separated flow path comprising a separate flow path, at least two of the separated flow paths converging at a flow-merge location;a fluid flow arrangement which, in use, causes the dispersion medium to flow along each flow path to the flow-merge location;at least one fluid introduction arrangement located at or proximate the flow-merge location configured, in use, to feed the body-forming fluid into the dispersion medium; anda flow constriction arrangement proximate to or following the flow-merge location, which in use, constricts and accelerates the dispersion medium flow proximate to and/or following the flow-merge location.2. An apparatus according to claim 1 , wherein the flow constriction arrangement includes a reduction in the overall fluid flow cross-sectional area from the flow upstream of the ...

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Номер записи: 35

14-01-2016 дата публикации

COMPOSITIONS INCORPORATING DIELECTRIC ADDITIVES FOR PARTICLE FORMATION, AND METHODS OF PARTICLE FORMATION USING SAME

Номер: US20160010243A1

Автор: Angammana Chitral, Gerakopoulos Ryan, Koslow Evan, Lazareva Tatiana, Tindale Jocelyn

Принадлежит:

A method of forming particles that includes performing a strong force attenuation of a mixture to form pre-particles. The mixture including a base compound and a dielectric additive having an elevated dielectric constant dispersed therein. The pre-particles are then dielectrically spun in an electrostatic field to further attenuate the pre-particles and form the particles. 140.-. (canceled)41. A method of forming particles , comprising:a. adding a dielectric additive to a base compound to form a mixture; andb. dielectrically spinning the mixture to form the particles.42. The method of claim 41 , further comprising mechanically attenuating the base compound before dielectrically spinning the mixture.43. The method of claim 42 , wherein mechanically attenuating the base compound forms particles larger than one micron claim 42 , and the dielectric spinning forms particles smaller than one micron.44. The method of claim 42 , wherein the mechanical attenuation forms particles less than 12 microns in diameter.45. The method of claim 42 , wherein the mechanical attenuation forms particles less than 20 microns in diameter.46. The method of claim 42 , wherein the mechanical attenuation is performed using at least one rotating surface.47. The method of claim 41 , wherein the base compound is a polymer.48. The method of claim 47 , further comprising melting the polymer to form a liquid polymer melt claim 47 , then electrospinning the liquid polymer melt to form polymer particles.49. The method of claim 48 , wherein the dielectric additives are added to the polymer before melting the polymer.50. The method of wherein the dielectric additives are added to the polymer after melting.51. The method of claim 41 , further comprising adding a dispersant selected to encourage the dielectric additive to disperse within the base compound.52. The method of claim 51 , further comprising mixing the dispersant and dielectric additive before the dielectric additive is combined with other ...

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Номер записи: 36

17-01-2019 дата публикации

Biocomposites And Methods Of Making The Same

Номер: US20190015549A1

Автор: McMurtry David Harwood, Paukshto Mikhail Vitoldovich, Zaitseva Tatiana

Принадлежит:

In general, the present invention is related to biopolymer and biocomposite materials and structures, and methods of making and using the same. In some embodiments, the present invention is directed to oriented collagen based biocomposite materials and structures, and methods of making. 1. A method of producing a fibrillar biopolymer material comprising the steps of:dipping a thin biopolymer ribbon into a solution, the thin biopolymer ribbon having oriented crimped fibrils; andpulling the biopolymer ribbon along the long axis of ribbon from the solution in the direction of the crimped biopolymeric fibrils orientation such that the ribbon collapses and folds about the long axis of the ribbon at the air-liquid interface as the ribbon is pulled from the solution forming a multilumen fibrillar biopolymer pseudo-fiber wherein the biopolymeric fibrils are aligned along the pseudo-fiber.2. The method according to wherein the ribbon collapses and folds about the long axis of the ribbon forming a multilumen structure comprising of the crimped biopolymeric fibrils aligned along the multilumen structure in the direction of the pseudo-fiber such that the multilumen structure induces a spontaneous capillary flow of a water-based solution in the pseudo-fiber direction.3. The method according to further comprising: drying the fibrillar biopolymer pseudo-fiber with a flow of dry air or dry gas which continuously surrounds the fibrillar biopolymer pseudo-fiber as it is pulled from the solution.4. The method according to further comprising: cross-linking the fibrillar biopolymer pseudo-fiber.5. The method according to - wherein the fibrillar biopolymer pseudo-fiber is further used to deliver cells claim 3 , peptides claim 3 , drugs claim 3 , growth factors claim 3 , small molecules claim 3 , nucleic acids claim 3 , or artificial nucleic acid analogues.6. The method according to wherein the delivery is used for tissue repair and/or regeneration and/or modification.7. The method ...

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Номер записи: 37

15-01-2015 дата публикации

Gelatin Non-Woven Structures Produced by a Non-Toxic Dry Solvent Spinning Process

Номер: US20150017862A1

Автор: EVERLAND HANNE, Hassingboe Jens, VANGE JAKOB

Принадлежит: COLOPLAST A/S

The present application discloses an alternative method for the formation of non-woven with fibers in the 1 to 200 μm range. Using an aqueous solution of gelatin (optionally with <30% of low molecular weight alcohol) the fibers are ejected utilizing pressurized air emitted from nozzle and the non-woven formed directly from the emitted thin fibers. 1. A method of producing fibers of gelatin comprising the steps of:(a) ejecting an aqueous solution of gelatin through a nozzle, wherein glucosaminoglycans (GAGs) are dissolved in the solution prior to ejection, wherein the aqueous solution includes less than 25% low molecular weight alcohol; while(b) emitting pressurized air from air jet bores into the gelatin fibers containing GAGs to attenuate or stretch the gelatin fiber containing GAGs; while(c) collecting the gelatin fibers containing GAGs on a collecting device.2. The method according to claim 1 , wherein the viscosity of the aqueous solution of gelatin is between 1000 and 2000 mPas at a processing temperature of 40° C.3. The method according to claim 1 , wherein the nozzle has an orifice between 0.008 inch and 0.050 inch.4. The method according to claim 1 , wherein the aqueous solution comprises less than 10% low molecular alcohol.5. The method according to claim 1 , wherein the aqueous solution comprises less than 1% low molecular alcohol.6. The method according to claim 1 , wherein the low molecular weight alcohol is selected from the group consisting of methanol claim 1 , ethanol claim 1 , 1-propanol claim 1 , 2-propanol claim 1 , and 1-butanol.7. The method according to claim 1 , wherein the collection takes place in parallel to the ejection.8. The method according to claim 1 , further comprising the step of forming non-woven from the gelatin fibers containing GAGs as they are ejected.9. The method according to claim 1 , further comprising the step of allowing the gelatin fibers containing GAGs to gel prior to drying.10. The method according to claim 1 , ...

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Номер записи: 38

18-01-2018 дата публикации

ARTIFICIAL PROTEIN FIBERS FOR HAIR, MANUFACTURING METHOD THEREFOR AND HEAD ACCESSORY CONTAINING SAME

Номер: US20180016709A1

Автор: FUJITA Masato, Nishida Sohei, Sonoyama Yujiro

Принадлежит: KANEKA CORPORATION

Protein fibers for artificial hair include a polycation, wherein the protein fibers for artificial hair are crosslinked with an organic compound and/or a metal salt, and the protein fibers for artificial hair have curls. A method for producing the protein fibers for artificial hair includes treating artificial protein fibers that are crosslinked with an organic compound and/or a metal salt with a treatment solution containing a polycation, and curling the artificial protein fibers, or curling artificial protein fibers that are crosslinked with an organic compound and/or a metal salt, and treating the curled artificial protein fibers with a treatment solution containing a polycation. 1. Protein fibers for artificial hair , comprising a polycation , whereinthe protein fibers for artificial hair are crosslinked with an organic compound and/or a metal salt, andthe protein fibers for artificial hair have curls.2. The protein fibers for artificial hair according to claim 1 , wherein a protein constituting the protein fibers for artificial hair is at least one selected from the group consisting of collagen claim 1 , casein claim 1 , protein derived from soybean meal claim 1 , protein derived from yeast claim 1 , protein derived from fish meal claim 1 , and feather meal.3. The protein fibers for artificial hair according to claim 1 , wherein the protein fibers for artificial hair are water-insoluble regenerated collagen fibers.4. The protein fibers for artificial hair according to claim 1 , wherein the organic compound is one selected from the group consisting of aldehyde compounds claim 1 , epihalohydrins claim 1 , hydrogen halide adducts of epihalohydrins claim 1 , and polyfunctional epoxide compounds.5. The protein fibers for artificial hair according to claim 1 , whereinthe metal salt is a water-soluble or water-dispersible compound,the metal salt contains a metal ion selected from the group consisting of aluminum ion, zirconium ion, titanium ion, zinc ion, copper ion, ...

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Номер записи: 39

21-01-2021 дата публикации

HOLLOW FIBER MEMBRANE-TYPE ARTIFICIAL LUNG

Номер: US20210015985A1

Автор: ODA Teiji

Принадлежит: NATIONAL UNIVERSITY CORPORATION SHIMANE UNIVERSITY

The present invention provides a hollow fiber membrane oxygenator comprising 1. A hollow fiber membrane oxygenator comprisinga housing comprising a blood flow path;a blood inlet port and a blood outlet port disposed in the housing so as to allow blood to flow through the blood flow path,a gas exchange part comprising a bundle of a plurality of hollow fiber membranes disposed in the blood flow path;a gas inflow port and a gas outflow port provided in the housing so as to allow an oxygen-containing gas to flow through lumens of the hollow fiber membranes;a gas temperature control part for adjusting the temperature of the gas flowing through the lumens of the hollow fiber membranes; andthe gas temperature control part comprises cold- or warm-water flow pipes which is inserted in the hollow fiber membranes.2. The hollow fiber membrane oxygenator according to claim 1 , wherein the oxygen-containing gas further contains helium gas.3. (canceled)4. The hollow fiber membrane oxygenator according to claim 2 , wherein the gas temperature control part comprises rod-shaped members disposed in hollow fibers claim 2 , and cooling mechanisms for cooling the rod-shaped members.5. The hollow fiber membrane oxygenator according to claim 4 , wherein the hollow fiber membranes and the gas temperature control part constitute a heat exchange part claim 4 , and the oxygenator is a hollow fiber membrane-based gas and heat exchanger.6. The hollow fiber membrane oxygenator according to claim 2 , further comprising a gas separation membrane for recovering helium from gas released from the gas outflow port.7. The hollow fiber membrane oxygenator according to claim 1 , wherein the gas temperature control part selectively cools the local area inside the oxygenator where the blood and hollow fiber membranes come into contact with each other.8. The hollow fiber membrane oxygenator according to claim 1 , wherein the gas temperature control part adjusts the temperature of the oxygen-containing gas in ...

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Номер записи: 40

16-01-2020 дата публикации

OXYGENATOR OF ORGANIC FLUIDS

Номер: US20200016312A1

Автор: Galavotti Daniele

Принадлежит:

The oxygenator of organic fluids comprises: a container body having a longitudinal axis; a first inlet opening for the oxygen and a second outlet opening for an exhaust gas obtained in the container body; a third inlet opening for an organic fluid to be oxygenated and a fourth outlet opening for oxygenated organic fluid obtained in the container body; an oxygenation chamber of the fluid to be oxygenated that is defined inside the container body; a distribution pre-chamber of the fluid to be oxygenated fitted between the third inlet opening and the oxygenation chamber; a mass of capillary fibers that are impermeable to liquids and porous to gasses, designed to be lapped by the organic fluid and arranged inside the oxygenation chamber according with a common parallel direction; dynamic distribution means supported in the distribution pre-chamber by support means. 1. An oxygenator of organic fluids comprising:A container body having a longitudinal axis;A first inlet opening for the oxygen and a second outlet opening for an exhaust gas obtained in said container body;A third inlet opening for an organic fluid to be oxygenated and a fourth outlet opening for oxygenated organic fluid obtained in said container body;An oxygenation chamber of said fluid to be oxygenated that is defined inside said container body;A distribution pre-chamber of the fluid to be oxygenated fitted between third inlet opening and said oxygenation chamber;A mass of capillary fibers that are impermeable to liquids and porous to gasses, designed to be lapped by said organic fluid and clamped by clamping means inside said oxygenation chamber according with a common parallel direction; and{'b': '4', 'dynamic distribution means supported in said distribution pre-chamber by support means.'}2. The oxygenator as claimed in claim 1 , wherein said distribution means comprise at least a fan that is supported freely rotatable by said support means inside said pre-chamber claim 1 , said fan including a central ...

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Номер записи: 41

17-01-2019 дата публикации

Method For Providing Surface Modifying Composition With Improved Byproduct Removal

Номер: US20190016845A1

Автор: Hall Monica P., Kamerath Craig, Kosaraju Praveen, Teo Jiunn

Принадлежит: Fresenius Medical Care Holdings, Inc.

A method forming a surface modifying composition with reduced need for organic solvent and evaporation thereof for removal of insoluble reaction byproducts from the composition. The purified composition can be used in the formation of articles having improved biocompatibility, such as medical articles (e.g., spun hollow fiber). 1. A method comprising:forming a first solution by phase transitioning at least a portion of a surface modifying composition to a liquid state, the surface modifying composition comprising:a) at least one polymer or oligomer, andb) an insoluble reaction byproduct of i) a fluorotelomer alcohol and ii) an isocyanate, wherein said insoluble reaction byproduct is substantially insoluble in said polymer or oligomer; andremoving from the first solution at least a portion of said insoluble reaction byproduct present in the first solution to obtain a second solution;wherein said polymer or oligomer comprises a polymer or oligomer backbone covalently attached to at least one surface active group.2. The method of claim 1 , wherein said first solution is formed by dissolving at least a portion of said surface modifying composition in at least one solvent.3. The method of claim 1 , wherein said first solution is formed by melting said polymer or oligomer of said surface modifying composition.4. The method of claim 1 , wherein the insoluble reaction byproduct is fluorotelomer alcohol end capped di-isocyanate.5. The method of claim 1 , wherein the fluorotelomer alcohol (FTOH) is 4:2 FTOH claim 1 , 5:2 FTOH claim 1 , 6:2 FTOH claim 1 , 7:2 FTOH claim 1 , 8:2 FTOH claim 1 , 9:2 FTOH claim 1 , 10:2 FTOH claim 1 , or a combination thereof.6. The method of claim 1 , wherein the fluorotelomer alcohol is 6:2 fluorotelomer alcohol.7. The method of claim 1 , wherein the isocyanate has two or more isocyanate functional groups.8. The method of claim 1 , wherein the isocyanate is di-isocyanate claim 1 , tri-isocyanate claim 1 , or a combination thereof.9. The method ...

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Номер записи: 42

16-01-2020 дата публикации

HOLLOW POLYESTER LONG FIBER AND PREPARATION METHOD THEREFOR

Номер: US20200017995A1

Автор: Ni Chunjian, Yoshimiya Takayuki

Принадлежит:

A hollow polyester long fiber has a cross-sectional hollowness ranging from 20.0% to 45.0%, the long fiber in natural state being of a three-dimensionally crimped shape, and the radius of curvature of the crimped shape being 10.0 mm to 50.0 mm. The fluffy processed tows obtained by processing the hollow polyester long fiber have high fluffiness. 18.-. (canceled)9. A hollow polyester long fiber having a cross-sectional hollowness of 20.0% to 45.0% , and the long fiber has a three-dimensionally crimped shape in a natural state , and the crimped shape has a radius of curvature of 10.0 mm to 50.0 min.10. The hollow polyester long fiber according to claim 9 , wherein the long fiber has a monofilament fineness of 4.0 dtex to 15.0 dtex.11. The hollow polyester long fiber according to claim 10 , wherein the long fiber has a monofilament fineness of 5.0 dtex to 10.0 dtex.12. The hollow polyester long fiber according to claim 9 , wherein the long fiber has a radius of curvature of 3.5 mm to 10.0 mm after dry heat treatment at 160° C. for 3 minutes.13. The hollow polyester long fiber according to claim 9 , wherein the polyester is selected from the group consisting of polyethylene terephthalate claim 9 , polytrimethylene terephthalate claim 9 , polybutylene terephthalate or a modified polymer thereof.14. A method of preparing the hollow polyester long fiber according to claim 9 , wherein a dried chip is melt-extruded by a screw and then conveyed to a metering pump through a pipe claim 9 , the polymer accurately measured by the metering pump is conveyed to a spinning pack claim 9 , a spinneret of the spinning pack is a hollow spinneret with a cooling distance of 10 to 150 mm claim 9 , and a wind speed of side blowing of 25 to 90 m/min.15. The method according to claim 14 , wherein the cooling distance is 60 to 110 mm.16. The method according to claim 14 , wherein the wind speed of the side blowing is 30 to 50 m/min.17. The hollow polyester long fiber according to claim 10 , ...

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Номер записи: 43

22-01-2015 дата публикации

HOLLOW FIBER MEMBRANES AND METHODS FOR FORMING SAME

Номер: US20150020685A1

Автор: Bhandari Dhaval Ajit, HOWSON Paul Edward, KOROS William, McCloskey Patrick Joseph, NARANG Kristi Jean

Принадлежит: GENERAL ELECTRIC COMPANY

The invention provides improved hollow fiber membranes having at least two layers, and methods for forming the same. The methods include co-extruding a first composition, a second composition, and a third composition to form a dual layer hollow fiber membrane. The first composition includes a glassy polymer; the second composition includes a polysiloxane; and the third composition includes a bore fluid. The dual layer hollow fiber membranes include a first layer and a second layer, the first layer being a porous layer which includes the glassy polymer of the first composition, and the second layer being a polysiloxane layer which includes the polysiloxane of the second composition. 1. A method of forming a hollow fiber membrane comprising two layers , said method comprising co-extruding a first composition , a second composition , and a third composition to form a dual layer hollow fiber membrane ,said first composition comprising a glassy polymer,said second composition comprising a polysiloxane, andsaid third composition comprising a bore fluid,wherein the dual layer hollow fiber membrane comprises a first layer and a second layer, the first layer being a porous layer comprising the glassy polymer of the first composition, and the second layer being a polysiloxane layer comprising the polysiloxane of the second composition.2. The method according to claim 1 , wherein the first layer is an inner layer claim 1 , and the second layer is an outer layer in direct contact with the inner layer; andthe polysiloxane is polydimethylsiloxane (PDMS), and the polysiloxane layer is a PDMS layer; orthe polysiloxane is a silicone-polyimide block copolymer, and the polysiloxane layer is a silicone-polyimide block copolymer layer.3. The method according to claim 2 , wherein the glassy polymer is selected from the group consisting of cellulose acetate claim 2 , polysulfones claim 2 , regenerated cellulose claim 2 , cellulose triacetate claim 2 , polyether sulfone claim 2 , ...

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Номер записи: 44

22-01-2015 дата публикации

POROUS POLYMER MEMBRANE

Номер: US20150021261A1

Автор: ITO Kengo, Miki Jun, Shiotani Yuko, Tanaka Yoshito

Принадлежит: DAIKIN INDUSTRIES, LTD.

An object of the present invention is to provide porous polymer membranes with good water permeability and good hydrophilicity. The present invention relates to a porous polymer membrane including a copolymer (A) containing vinyl alcohol units and tetrafluoroethylene units, wherein an alternating ratio of the vinyl alcohol units and the tetrafluoroethylene units is at least 30%. 1. A porous polymer membrane comprising a copolymer (A) containing vinyl alcohol units and tetrafluoroethylene units ,wherein an alternating ratio of the vinyl alcohol units and the tetrafluoroethylene units is at least 30%.2. The porous polymer membrane according to claim 1 ,wherein the copolymer (A) has a vinyl alcohol unit-to-tetrafluoroethylene unit ratio (vinyl alcohol units/tetrafluoroethylene units) of (25 to 75)/(75 to 25) on a molar basis.3. The porous polymer membrane according to claim 1 , further comprising a vinylidene fluoride resin in addition to the copolymer (A).4. The porous polymer membrane according to claim 1 ,wherein the porous polymer membrane is produced by either one or the combination of a non-solvent induced phase separation method and a thermally-induced phase separation method.5. The porous polymer membrane according to claim 1 ,wherein the porous polymer membrane is a hollow fiber membrane.6. The porous polymer membrane according to claim 1 ,wherein the porous polymer membrane is for use in treating water. The present invention relates to porous polymer membranes.Porous membranes have recently been utilized in various fields, including not only for treatment of water (e.g. water purification, wastewater treatment), medical usage (e.g. blood purification), and the food industry, but also for use as charged membranes, battery separators, and fuel cells.For example, in the field of water treatment (e.g. water purification, wastewater treatment), the use of porous membranes is an alternative to conventional processes including sand filtration and coagulative ...

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Номер записи: 45

28-01-2016 дата публикации

STOCK SOLUTION CONCENTRATING DEVICE, STOCK SOLUTION TREATMENT DEVICE, AND CIRCULATION-TYPE TREATMENT DEVICE

Номер: US20160022895A1

Автор: Kinouchi Yohsuke, NAKAGAWA Tadahiko, OKAHISA Toshiya, TANAKA Zenji, YAMAJI Satoru

Принадлежит:

Provided are a stock solution concentrating device, a stock solution treatment device and a circulation-type treatment device that can prevent the deposition of cells and the like on a filtration member and that can continuously filter and concentrate a stock solution such as pleural and ascitic fluid or blood plasma. The stock solution concentrating device concentrates a stock solution such as pleural and ascitic fluid or blood plasma to form a concentrated solution, and is equipped with: a filter () having a filtration member that filters the stock solution; a concentrator () to which the filtrate which has been filtered is supplied, and which concentrates the filtrate to form a concentrated solution; and a stock solution supply unit that supplies the stock solution to the filter (). The stock solution supply unit has a supply amount adjustment function for adjusting the amount of the stock solution supplied to the filter. 121-. (canceled)22. A stock solution concentrating device for concentrating a stock solution such as pleural and ascitic fluid or blood plasma to form a concentrated solution , the device comprising:a filter having a filtration member that filters the stock solution;a concentrator to which a filtrate which has been filtered by the filter is supplied, and which concentrates the filtrate to form the concentrated solution; anda stock solution supply unit that supplies the stock solution to the filter,wherein the stock solution supply unit has a supply amount adjustment function for adjusting the amount of the stock solution supplied to the filter,the filter includesa supply port to which the stock solution is supplied, anda separate liquid discharge port from which a separate liquid which has been separated from the filtrate is discharged,the stock solution supply unit includesa flow path that supplies the stock solution to the supply port of the filter, anda circulation flow path that supplies the separate liquid discharged from the separate ...

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Номер записи: 46

26-01-2017 дата публикации

Medical electrical lead with biostable pvdf-based materials

Номер: US20170021160A1

Автор: Adegbola O. Adenusi, Adeniyi O. Aremu, David R. Wulfman, Joseph T. Delaney, JR.

Принадлежит: Cardiac Pacemakers Inc

A medical electrical lead includes an insulative lead body extending from a distal region to a proximal region, a conductor disposed within the insulative lead body and extending from the proximal region to the distal region, an electrode disposed on the insulative lead body and in electrical contact with the conductor, and a fibrous matrix disposed on at least part of the electrode. The fibrous matrix includes fibers. The fibers include a polyvinylidene fluoride-based (PVDF-based) polymer and a crystal-modifying additive. The PVDF-based polymer includes an amorphous PVDF phase and a crystalline PVDF phase. The crystalline PVDF phase includes a beta form crystalline structure in an amount exceeding any other crystalline structure form in the crystalline PVDF phase.

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Номер записи: 47

26-01-2017 дата публикации

MODIFIED CROSS-SECTION FIBER

Номер: US20170022633A1

Автор: Kubota Hitoshi

Принадлежит:

In particular, an object is to show a modified cross-section fiber that is split and used and thus can efficiently produce a fine conjugate fiber. The present disclosure relates to a modified cross-section fiber comprising: () a plurality of pieces of conjugate fiber structures comprising a first thermoplastic resin and a second thermoplastic resin having a lower melting or softening point than the first thermoplastic resin and () a connected body comprising a third thermoplastic resin having a higher melting or softening point than the second thermoplastic resin, wherein, in an arbitrary fiber cross-section, at least two pieces of the conjugated fiber structure are connected by the connected body. 1. A modified cross-section fiber comprising:a plurality of pieces of conjugate fiber structures comprising a first thermoplastic resin and a second thermoplastic resin having a lower melting or softening point than the first thermoplastic resin anda connected body comprising a third thermoplastic resin having a higher melting or softening point than the second thermoplastic resin,wherein, in an arbitrary fiber cross-section, at least two pieces of the conjugated fiber structure are connected by the connected body.2. The modified cross-section fiber according to claim 1 , wherein the connected body further comprises the second thermoplastic resin and has structure in which a periphery of the third thermoplastic resin is covered with the second thermoplastic resin.3. The modified cross-section fiber according to claim 1 , wherein a cross-sectional shape of the conjugate fiber structure is circular or polygonal.4. The modified cross-section fiber according to claim 1 , comprising 2 to 6 pieces of the conjugate fiber structures.5. The modified cross-section fiber according to claim 1 , wherein the first thermoplastic resin and the third thermoplastic resin are the same resin.6. The modified cross-section fiber according to claim 1 , wherein the second thermoplastic resin ...

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Номер записи: 48

28-01-2021 дата публикации

USE OF HOLLOW FIBERS TO OBTAIN BLOOD OR A BLOOD DERIVATIVE IMPOVERISHED FROM BLOOD CELLS AND PLATELETS DERIVED EXTRACELLULAR VESICLES

Номер: US20210025795A1

Автор: Chiesi Antonio, Zarovni Natasa, Zocco Davide

Принадлежит:

A method is provided for using hollow fibers having a porosity above 20 nm, in particular polyethersulfone hollow fibers, to impoverish blood and blood-derivatives from blood-derived extracellular vesicles, in particular exosomes and exomers. Methods for obtaining and analyzing the impoverished samples are also provided. 1. A method for using hollow fibers , the method comprising impoverishing , using hollow fibers having a porosity above 20 nm , by gravity filtering , a blood or blood-derived liquid sample from extracellular vesicles , the extracellular vesicles having a size that is inferior to the porosity of the hollow fibers and originating from blood components selected from the group consisting of blood red cells , blood white cells , platelets , and combinations thereof.2. The method of claim 1 , wherein the hollow fibers comprise polyethersulfone hollow fibers.3. The method of claim 1 , wherein the hollow fibers are polyethersulfone hollow fibers.4. The method of claim 1 , wherein the extracellular vesicles are selected from the group consisting of microvesicles claim 1 , exosomes claim 1 , exomers claim 1 , and combinations thereof.5. The method of claim 1 , wherein the porosity of the hollow fibers is of about 200 nm.6. The method of claim 1 , wherein the porosity of the hollow fibers is comprised between about 150 and about 500 nm.7. The method of claim 1 , wherein the blood-derived liquid sample is a plasma sample.8. A method for obtaining blood or a blood derivative impoverished in extracellular vesicles originating from blood components selected from the group consisting of red blood cells claim 1 , white blood cells claim 1 , platelets claim 1 , and combination thereof claim 1 , the method comprising gravity filtering a blood or blood-derived liquid sample through a filter comprising hollow fibers having a porosity above 20 nm claim 1 , thereby obtaining blood or a blood derivative impoverished in extracellular vesicles claim 1 , the extracellular ...

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Номер записи: 49

02-02-2017 дата публикации

VIRUS REMOVAL MEMBRANE

Номер: US20170028360A1

Автор: HAMAMOTO Ryo, HONGO Tomoko, KON Yusuke

Принадлежит: ASAHI KASEI MEDICAL CO., LTD.

A virus removal membrane is formed from cellulose, in which, when a solution containing gold colloids having a diameter of 20 nm is applied through a primary surface to the virus removal membrane to allow the virus removal membrane to capture the gold colloids for measurement of brightness in a cross section of the virus removal membrane, a value obtained by dividing a standard deviation of a value of an area of a spectrum of variation in the brightness by an average of the value of the area is 0.01 or more and 1.5 or less; and a thickness of a portion, where gold colloids having a diameter of 20 nm or more and 30 nm or less are captured, in the cross section of the virus removal membrane in a wet state is 10.0 μm or more and 30.0 μm or less. 1. A virus removal membrane for removing viruses from a protein-containing solution ,the virus removal membrane comprisinga primary surface to which the protein-containing solution is applied, anda secondary surface from which a liquid that permeates through the virus removal membrane is flowed, wherein,when a solution containing gold colloids having a diameter of 20 nm is applied through the primary surface to the virus removal membrane to allow the virus removal membrane to capture the gold colloids for measurement of brightness in a cross section of the virus removal membrane, a value obtained by dividing a standard deviation of a value of an area of a spectrum of variation in the brightness by an average of the value of the area of the spectrum of variation in the brightness is 0.01 or more and 1.50 or less;a thickness of a portion where gold colloids having a diameter of 20 nm or more and 30 nm or less are captured in the cross section of the virus removal membrane in a wet state is 10.0 μm or more and 30.0 μm or less; andthe virus removal membrane is formed of cellulose.3. The virus removal membrane according to claim 1 , wherein gold colloids having a diameter of 10 nm is not captured.4. The virus removal membrane ...

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Номер записи: 50

02-02-2017 дата публикации

FIBERS AND ARTICLES INCLUDING THEM

Номер: US20170029991A1

Автор: Chakravarty Jayant, Chandrasekaran Neelakandan, Prioleau Lori-Ann S., Stagg Timothy V., Wood Leigh E.

Принадлежит:

A multi-component fiber including at least first and second components. In some cases, at least a portion of the first component is opaque and microporous, and the second component is different from the first component. In some cases, at least a portion of the second component can be seen through at least a portion of the first component. A fiber having an opaque, microporous region and a see-through region of lower porosity is also disclosed. Fibrous webs including such fibers are also disclosed. In some cases, the fibrous web has at least one first region where first portions of the multiple fibers are opaque and microporous and at least one second region where second portions of the multiple fibers form a see-through region of lower porosity. Articles and laminates including the fibrous webs are disclosed. Methods of making the fibers, fibrous webs, and articles are also disclosed. 1. A multi-component fiber comprising at least first and second components , wherein at least a portion of the first component is opaque and microporous , and wherein the second component is different from the first component.2. The multi-component fiber of claim 1 , wherein the first component further comprises a see-through region of lower porosity than the portion that is opaque and microporous.3. The multi-component fiber of claim 2 , wherein at least a portion of the second component can be seen through the see-through region of lower porosity.4. The multi-component fiber of claim 1 , wherein the multi-component fiber is a core-sheath fiber claim 1 , wherein the sheath comprises the first component claim 1 , and wherein the core comprises the second component.5. The multi-component fiber of claim 1 , wherein the first component and second component are different colors or different shades of the same color.6. A fiber comprising an opaque claim 1 , microporous region and a see-through region of lower porosity.7. The fiber of claim 6 , wherein the fiber comprises a beta-nucleating ...

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Номер записи: 51

01-02-2018 дата публикации

DOWN-LIKE FIBER

Номер: US20180030619A1

Автор: CHENG SHING LANG, WU KUO CHUNG

Принадлежит:

The invention provides a down-like fiber which comprises a hollow stem and a plurality of shaped lobes arranged radially around the stem wherein each shaped lobe has a bottom end and a head end opposite the bottom end. The bottom end attaches to the surface of the hollow stem and two adjacent head ends do not connect to one another to form an opening. The present invention also provides a spinneret and a method for manufacturing the above fiber. 1. A down-like fiber , comprising:a hollow stem; anda plurality of shaped lobes, arranged radially from the hollow stem as a center, wherein each of the shaped lobes comprises a bottom end and a head end opposite the bottom end, and the bottom end connects to a surface of the hollow stem, and the head ends of two adjacent shaped lobes do not connect with one another to form an opening.2. The fiber of claim 1 , wherein the shaped lobes are T-shaped claim 1 , cross-shaped claim 1 , Y-shaped claim 1 , ↑-shaped claim 1 , ♀-shaped claim 1 , W-shaped claim 1 , H-shaped claim 1 , V-shaped or rectangular-shaped.3. The fiber of claim 1 , wherein the number of the shaped lobes is from 2 to 6.4. The fiber of claim 1 , wherein the fiber is a filament or a staple.6. The spinneret of claim 5 , wherein the outer lobe portion are T-shaped claim 5 , cross-shaped claim 5 , Y-shaped claim 5 , ↑-shaped claim 5 , ♀-shaped claim 5 , W-shaped claim 5 , H-shaped claim 5 , V-shaped or rectangular-shaped.7. The spinneret of claim 5 , wherein the number of the slit of spinning nozzle is from 2 to 6. The present invention relates to a down-like fiber, particularly, to a down-like fiber with a hollow stem and a plurality of shaped lobes.Natural feathers consist of vaned feathers and down feathers; the former has hollow stems, and the latter does not. The arrangement of both vaned feathers and down feathers forms irregular spaces, thereby trapping air to reduce heat dissipation and thus can provide warm effect. However, the warm effect of natural ...

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Номер записи: 52

17-02-2022 дата публикации

DEVICE AND METHOD FOR PRODUCING POLYMER FIBERS AND ITS USES THEREOF

Номер: US20220049376A1

Автор: Enn Raido, Järvekülg Martin, Martens Märt-Erik, Õun Sander, Toots Karl Marti, Veinla Markus

Принадлежит: Gelatex Technologies OÜ

A device including one or more nozzles having a tubular fiber spinning needle and method for producing non-toxic polymer fibers and microfibrous and nanofibrous polymer materials made thereof on a small to large scale using a wide range of synthetic polymers and bio-based polymers. The device and method enable continuous in-line production of polymer fibers at a high fiber production rate energy efficiently and safely. The increased polymer fiber production rate is achieved by the at least one nozzle that enables a centrifugal force acting upon the tubular fiber spinning needle causing rotational motion of the tubular fiber spinning needle and higher polymer injection rates per nozzle. 1. A device for producing polymer fibers , the device comprising:at least one nozzle configured to receive a polymer solution and a jet of compressed gas, wherein the at least one nozzle comprises{'claim-text': 'an unfixed distal end protruding from the opened first end a proximal end opposite to the unfixed distal end, an inlet of the polymer solution at the proximal end, and an outlet of the polymer solution at the unfixed distal end, wherein the proximal end of the at least one tubular fiber spinning needle is fixed to the second end of the at least one nozzle;', '#text': 'a body having a hollow space, an opened first end and a second end opposite to the opened first end, a first inlet of the jet of compressed gas in the second end, and at least one tubular fiber spinning needle being mounted through the second end and the hollow space, wherein the at least one tubular fiber spinning needle comprises:'}a pump configured to pump the polymer solution through the at least one tubular fiber spinning needle of the at least one nozzle;a gas compressor configured to direct the jet of compressed gas into the first inlet of the jet of compressed gas of the at least one nozzle; anda first moving means of the unfixed distal end of the at least one tubular fiber spinning needle.2. The device ...

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Номер записи: 53

17-02-2022 дата публикации

CRIMPED MULTI-COMPONENT FIBERS

Номер: US20220049377A1

Автор: Biswas Sanjib, Chen Yinglong, Demirors Mehmet, GARG Akanksha, Larios Fabricio Arteaga, Lin Yijian, Martin Jill, Oner-Deliormanli Didem, VALAVALA Pavan Kumar, Weinhold Jeffrey D.

Принадлежит:

Disclosed is a curly fiber having a fiber centroid and comprising a first region having a first centroid and a second region wherein the first region comprises an ethylene/alpha olefin interpolymer composition in an amount of at least 75 weight percent based on total weight of the first region and wherein the ethylene/alpha olefin interpolymer composition is characterized by a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure, and a full width at half maximum of the high temperature peak is less than 6.0° C. and the second region is a material comprising a polymer which is different from the ethylene/alpha-olefin interpolymer of the first region and wherein the regions are arranged such that at least one of the first centroid and the second centroid is not the same as the fiber centroid. 1. A curly fiber having a fiber centroid and comprising a first region having a first centroid and a second region having a second centroid wherein the first region comprises an ethylene/alpha olefin interpolymer composition in an amount of at least 75 weight percent based on total weight of the first region and wherein the ethyl ene/alpha olefin interpolymer composition is characterized by a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure , and a full width at half maximum of the high temperature peak is less than 6.0° C. and the second region is a material comprising a polymer which is different from the ethyl ene/alpha-olefin interpolymer of the first region and wherein the regions are arranged such that at least one of the first centroid and the second centroid is not the same as the fiber centroid.2. The fiber of wherein the ethyl ene/alpha olefin interpolymer composition is further characterized by one or more of: a density in the range of 0.930 to 0.965 g/cm3 claim 1 , a melt index (I2) in the range of ...

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Номер записи: 54

04-02-2021 дата публикации

NANOFIBROUS ADHESION BARRIER

Номер: US20210030917A1

Автор: KARACA Esra, ÖZALP Rabia Gözde, SAFAK Serife

Принадлежит:

The present disclosure relates to adhesion barriers used in the biomedical field. Disclosed in particular is a nanofibrous mat suitable for use as an adhesion barrier in the biomedical field and obtained by the electrospinning method from a mixture of hyaluronic acid (HA) and sodium alginate (NaAlg) polymer solutions. 1. A nanofibrous mat obtained from a hyaluronic acid and sodium alginate polymer mixture , suitable for use as an adhesion barrier in the biomedical field.2. A production method of the nanofibrous mat according to claim 1 , the method comprising the following process steps:preparation of the hyaluronic acid solution in a solvent;preparation of the aqueous sodium alginate solution;mixing of the two prepared solutions;application of an electrospinning method to the mixed solution; andcross-linking of the obtained nanofibrous mat.3. A method according to claim 2 , wherein the solvent is NaOH/Dimethyl sulfoxide or NaOH/Dimethyl formamide.4. The method according to claim 3 , wherein the ratio of the mixture of said NaOH with Dimethyl sulfoxide or NaOH to Dimethyl formamide is 4/1 by volume.5. The method according to claim 2 , wherein the concentration of hyaluronic acid solution prepared in the solvent is 8-15% by weight/volume %.6. The method according to claim 2 , wherein the concentration of sodium alginate solution prepared in distilled water is 1-4% by weight/weight %.7. The method according to claim 2 , wherein the hyaluronic acid solution and the sodium alginate solution are mixed at a ratio of 1/1-10/1 by volume.8. The method according to claim 2 , wherein the said cross-linking treatment comprises following process steps:dissolving of 1-ethyl-3-(3-imethylaminopropyl) carbodiimide hydrochloride in a solvent;dissolving of N-hydroxysuccinimide or divinyl sulfone in a solvent;mixing of the two solutions prepared;submerging of the nanofibrous mat, into the resulting mixture solution and waiting at room temperature for 24 hours;agitation of the ...

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Номер записи: 55

30-01-2020 дата публикации

METHOD OF AND APPARATUS FOR INJECTING A LIQUID FORMULATION INTO A MOLTEN POLYMER

Номер: US20200032421A1

Автор: Campbell Ian, Jones Brian, Whitehead David

Принадлежит:

Injector () for injecting a liquid formulation into a molten polymer includes outlet () at one end and, at its other end, is arranged to be connected to upstream conduit () via a coupling housing () so that liquid formulation can pass from conduit into the injector, and further includes an elongate conduit () in which an elongate pin is slideably arranged being capable of expelling all liquid formulation from conduit. To address the risk the outlet could become blocked in use, whilst avoiding the need to depressurize and/or stop the flow or polymer in extruder (), the injection apparatus includes a spool () which is rotatably mounted within wall () of the extruder and is arranged to be rotated about an axis which extends substantially perpendicularly to the elongate extent of the extruder through which a polymer stream () flows. The spool may be moved between a first configuration and a second configuration wherein a flow path is interrupted, but wherein molten polymer continues to flow in said polymer flow conduit. 1. A method of injecting a liquid formulation into molten polymer , said method comprising:(i) selecting an apparatus comprising a polymer flow conduit for passage of molten polymer and an injector (I) arranged to deliver liquid formulation via a first, flow path into polymer in said polymer flow conduit when the apparatus is in a first configuration;(ii) with the apparatus in said first configuration, operating said injector (I) to inject liquid formulation into molten polymer in said polymer flow conduit, via said first flow path;(iii) arranging the apparatus in a second configuration wherein said first flow path is interrupted and wherein molten polymer continues to flow in said polymer flow conduit;(iv) with said apparatus in said second configuration, disengaging said injector (I) from other parts of the apparatus.2. A method according to claim 1 , wherein claim 1 , in step (iii) claim 1 , said first flow path is closed and/or blocked off so that no ...

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Номер записи: 56

30-01-2020 дата публикации

Self-Crimped Ribbon Fiber and Nonwovens Manufactured Therefrom

Номер: US20200032429A1

Автор: III Ralph A., Moody, Steffen John Frederick

Принадлежит:

Multi-component fibers or filaments that are ribbon shaped are provided having polymer components positioned in a side-by-side fashion. For example, the multi-component fibers may be bicomponent fibers having ribbon shape. The polymer components of the fibers are selected to have differential shrinkage behavior. Nonwovens are also provided that are manufactured from such ribbon shaped multi-component fibers or filaments. 120-. (canceled)21. A method of preparing a crimped fiber , comprising:(i) forming a continuous bicomponent fiber including a first polymer component and a second polymer component in a side-by-side configuration; wherein the continuous bicomponent fiber has a ribbon-shaped cross-section; and(ii) activating the continuous bicomponent fiber to initiate self-crimping of the continuous bicomponent fiber and to form the crimped fiber.22. The method of claim 21 , wherein activating the continuous bicomponent fiber comprises subjecting the continuous bicomponent fiber to thermal energy claim 21 , a mechanical force claim 21 , or both.23. The method of claim 22 , wherein the mechanical force comprises stretching the continuous bicomponent fiber.24. The method of claim 21 , further comprising depositing the crimped fiber directly or indirectly onto a collection web.25. The method of claim 21 , wherein the first component has a first melting point and the second component has a second melting point claim 21 , wherein a melting point difference between the first melting point and the second melting point is at most about 15° C.26. The method of claim 21 , wherein the first component has a first melting point between about 110° C.-130° C. claim 21 , and the second component has a second melting point between about 135° C.-175° C.27. The method of claim 21 , wherein the first component has a shrinkage coefficient and the second component has a second shrinkage coefficient claim 21 , wherein the first shrinkage coefficient is different than the second shrinkage ...

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Номер записи: 57

04-02-2021 дата публикации

HOLLOW FIBER

Номер: US20210032780A1

Автор: TANAKA Tatsuo, TAZUKE Yoshiyuki

Принадлежит: ASAHI KASEI KABUSHIKI KAISHA

The present disclosure is directed to provide a hollow fiber which is lightweight and has a texture with good volumic feel and good cushioning property. The hollow fiber of the present disclosure is a hollow fiber composed of a composition containing a vinylidene chloride-based resin as a main component, wherein the hollow fiber has a hollow ratio of more than 30% and 70% or less, an average outer diameter of 50 to 900 μm, a strength of 0.7 to 2 g/d, and a heat shrinkage rate after being heated at 100° C. for 15 minutes of 30% or less. 1. A hollow fiber ,the hollow fiber being composed of a composition containing a vinylidene chloride-based resin as a main component, and a hollow ratio of more than 30% and 70% or less;', 'an average outer diameter of 50 to 900 μm;', 'a strength of 0.7 to 2 g/d; and', 'a heat shrinkage rate after being heated at 100° C. for 15 minutes of 30% or less., 'the hollow fiber having2. The hollow fiber according to claim 1 , wherein a mass ratio of the vinylidene chloride-based resin relative to 100% by mass of the composition is 80% by mass or more. This application claims priority to Japanese Patent Application No. 2019-141380, filed Jul. 31, 2019, the entire disclosure of which is incorporated herein by reference.The present disclosure relates to a hollow fiber.Vinylidene chloride resins are resins excellent in various properties, such as flame retardance, chemical resistance, gas barrier property, and are widely used as raw materials for films and sheets. Applications of vinylidene chloride resins as raw materials, however, have been limited to processed products with certain shapes because the melting temperatures of such resins are close to their decomposition temperatures, which makes processing the resins difficult.As an exemplary processing of a vinylidene chloride resin, hollow fibers for artificial hairs made of a vinylidene chloride-based resin are known (PTL 1), for example.PTL 1: JP2007321250ARecently, applications of hollow ...

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Номер записи: 58

05-02-2015 дата публикации

ABSORBENT ARTICLE WITH CONTAINMENT BARRIER

Номер: US20150038930A1

Автор: Catalan Kemal Vatansever, CHENG Calvin Hoi Wung, Chhabra Rajeev, Isele Olaf Erik Alexander, JR. Johannson Jimmy, Nelson DeeAnn Ling, TEE

Принадлежит:

An absorbent article to be worn about the lower torso, the absorbent article comprising a chassis comprising a topsheet, a backsheet, an absorbent core disposed between the topsheet and the backsheet, and a pair of longitudinal barrier cuffs attached to the chassis. Each longitudinal cuff is formed of a web of material, the web of material having first and second opposing surfaces. The web of material comprises a nonwoven component layer comprising fibers having a number-average diameter of less than about 1 micron, a mass-average diameter of less than about 1.5 microns, and a ratio of the mass-average diameter to the number-average diameter less than about 2. The absorbent article further comprises a hydrophobic coating disposed on at least one surface of the web of material such that a coated web of material is formed, the hydrophobic surface coating comprising a solventless, multicomponent silicone composition including at least two silicone polymers and being substantially free of aminosilicones. 1. An absorbent article to be worn about the lower torso , the absorbent article comprising a chassis comprising a topsheet , a backsheet , and an absorbent core disposed between the topsheet and the backsheet; anda pair of longitudinal barrier cuffs attached to the chassis, each longitudinal cuff formed of a web of material, the web of material having first and second opposing surfaces, the web of material comprising a nonwoven component layer comprising fibers having a number-average diameter of less than about 1 micron, a mass-average diameter of less than about 1.5 microns, and a ratio of the mass-average diameter to the number-average diameter less than about 2; and the web of material further comprising a film with a surface that is coated with a hydrophobic coating, the hydrophobic surface coating comprising a solventless, multicomponent silicone composition including at least two silicone polymers and being substantially free of aminosilicones.2. The article of ...

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Номер записи: 59

11-02-2016 дата публикации

POROUS FILM MANUFACTURING METHOD AND APPARATUS

Номер: US20160038883A1

Автор: Fujiki Hiroyuki, Hiromoto Yasuo, Kurashina Masaki, Sumi Toshinori

Принадлежит: MITSUBISHI RAYON CO., LTD.

A method of manufacturing a porous film includes a decomposition step of introducing a porous film precursor which is formed by coagulating an undiluted film forming solution containing a hydrophilic polymer and a hydrophobic polymer, into a decomposition container; bringing a heated chemical containing an oxidizing agent into contact with the porous film precursor in the decomposition container; warming the porous film precursor in contact with the chemical; and decomposing the hydrophilic polymer remaining inside the porous film precursor using the oxidizing agent. An apparatus for manufacturing a porous film includes a decomposition device provided with the decomposition container. 1. (canceled)2. An apparatus for manufacturing a porous film comprising:a decomposition device that decomposes a hydrophilic polymer remaining in a porous film precursor formed by coagulating an undiluted film forming solution containing the hydrophilic polymer and a hydrophobic polymer,wherein the decomposition device comprises a decomposition container in which a heated chemical containing an oxidizing agent is brought into contact with the porous film precursor, the porous film precursor in contact with the chemical is warmed, and the hydrophilic polymer remaining inside the porous film precursor is decomposed with the oxidizing agent.3. The apparatus of claim 2 , wherein the decomposition device further comprises:a heater, which heats an inside of the decomposition container;a traveling device, which causes the porous film precursor to travel through the decomposition container; andchemical contacting device, which brings the chemical into contact with the porous film precursor traveling inside the decomposition container.4. The apparatus of claim 3 , wherein the chemical contacting device is provided at a plurality of places inside the decomposition container.5. The apparatus of claim 3 , wherein the heater heats the inside the decomposition container by supplying vapor to the ...

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Номер записи: 60

09-02-2017 дата публикации

Nylon 66 hollow fiber, method and equipment for manufacturing the same

Номер: US20170037542A1

Автор: Chi-Lu HUANG, Chuan-Shing Lin, Chung-Chen Wu, Yen-Hsiao Chen

Принадлежит: Chain Yarn Co Ltd

A method for manufacturing a nylon 66 hollow fiber includes steps as follows. A plurality of nylon 66 particles are provided. A melting step is provided, wherein the nylon 66 particles are melted so as to form a spun liquid. A fiber spitting step is provided, wherein the spun liquid goes through a hollow spinneret plate so as to form hollow nascent fibers. An evacuating step is provided, wherein the hollow nascent fibers are preliminarily solidified so as to form hollow half-solidified fibers. A cooling step is provided, wherein the hollow half-solidified fibers are cooled and solidified so as to form solidified fibers. A collecting and oiling step is provided. A drawing step is provided. A winding step is provided so as to obtain the nylon 66 hollow fiber.

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Номер записи: 61

12-02-2015 дата публикации

Device for producing hollow porous film and method for producing hollow porous film

Номер: US20150042004A1

Автор: Hiroyuki Fujiki, Toshinori Sumi, Yasuo Hiromoto

Принадлежит: Mitsubishi Rayon Co Ltd

The present invention relates to a device for producing a hollow porous film, the device comprising a spinning nozzle that discharges/shapes a film-forming resin solution dissolved to at least a hydrophobic polymer to a favorable solvent, a processing vessel that houses a processing gas containing a nonsolvent of the hydrophobic polymer and includes a first opening through which the film-forming resin solution discharged/shaped from the spinning nozzle is introduced, and a second opening from which the film-forming resin solution having come into contact with the gas containing the nonsolvent of the hydrophobic polymer is led, a solidification tank which houses a solidification solution and into which the film-forming resin solution led from the second opening is introduced; and gas elimination means for eliminating the processing gas, which flows out of the first opening, from the vicinity of the spinning nozzle.

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Номер записи: 62

06-02-2020 дата публикации

SEPARATING MEMBRANE AND METHOD FOR MANUFACTURING SEPARATING MEMBRANE

Номер: US20200038814A1

Автор: EIMURA Hiroki, TAKADA Koichi, YAMAMURA Gohei

Принадлежит: Toray Industries, Inc.

The present invention addresses the problem of providing a separating membrane mainly comprising a thermoplastic resin having high permeability. The present invention relates to a separating membrane including a thermoplastic resin, wherein the width of voids in the separating membrane is at least equal to 1 nm and at most equal to 1000 nm, and the curvature rate of the voids is at least equal to 1.0 and at most equal to 6.0. 1. A separation membrane comprising a thermoplastic resin , whereinthe separation membrane has voids therein which have a width of 1 nm-1,000 nm, andthe voids have a tortuosity of 1.0-6.0.2. The separation membrane according to comprising a co-continuous structure that comprises a phase comprising the thermoplastic resin claim 1 , and the voids.3. The separation membrane according to claim 1 , wherein claim 1 , in a graph with horizontal axis for wavenumber and vertical axis for intensity claim 1 , which is obtained by Fourier transformation of a microscopic image photographed in a square visual field with each side having a length 10 times to 100 times the width of the voids of the separation membrane claim 1 , when a peak half width is set as (a) and a peak maximum wavenumber is set as (b) in the graph claim 1 , a region of 0<(a)/(b)<1.5 is included therein.4. The separation membrane according to claim 1 , which has a membrane permeation flux at 50 kPa and 25° C. of 0.05 m/m/h-20 m/m/h.5. The separation membrane according to claim 1 , which has a thickness of 1 μm-1 claim 1 ,000 μm.6. The separation membrane according to claim 1 , which has a shape of a hollow fiber.7. The separation membrane according to claim 6 , wherein the shape of a hollow fiber has an outer diameter of 100 μm-5 claim 6 ,000 μm.8. The separation membrane according to claim 1 , wherein the thermoplastic resin comprises at least one compound selected from the group consisting of cellulose esters claim 1 , polyamides claim 1 , and polyesters.9. The separation membrane ...

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Номер записи: 63

18-02-2021 дата публикации

BLOCK COPOLYMER POROUS CARBON FIBERS AND USES THEREOF

Номер: US20210047242A1

Автор: Liu Guoliang, Zhou Zhengping

Принадлежит:

Described herein are porous carbon fibers, methods of making the porous carbon fibers, and methods of using the porous carbon fibers. In some aspects, the porous carbon fibers can have a hierarchical distribution of uniformly distributed meso- and micropores, wherein the micropores and mesopores can be interconnected. In aspects, the porous carbon fibers can have mesopores with a uniform pore size. 1. A porous carbon fiber comprising:a carbon matrix; andmesopores, wherein the mesopores are uniformly distributed throughout the carbon matrix, wherein the mesopores are uniform in size, wherein at least 50% of the mesopores are interconnected.2. The porous carbon fiber of claim 1 , further comprising micropores claim 1 , wherein the micropores are distributed throughout the carbon matrix claim 1 , wherein at least 50% of the micropores are interconnected with one or more mesopores.3. The porous carbon fiber of claim 1 , wherein the micropores are uniformly distributed throughout the carbon matrix.4. The porous carbon fiber of claim 1 , wherein the mesopores have a uniform pore size.5. The porous carbon fiber of claim 4 , wherein the peak size of the mesopores ranges from about 2 to about 50 nm.6. The porous carbon fiber of claim 1 , wherein the porosity of the porous carbon fiber ranges from about 20 to about 80 percent.7. The porous carbon fiber of claim 1 , wherein the BET surface area is greater than 300 m·g.8. The porous carbon fiber of claim 1 , wherein the porous carbon fibers have a collective pore volume claim 1 , wherein the collective pore volume ranging from about 0.05 to about 1 cm/g.9. A carbon fiber matrix claim 1 , wherein the carbon fiber matrix comprises:a plurality of porous carbon fibers, wherein each of the carbon fibers in the plurality of porous carbon fibers comprisea carbon matrix; andmesopores, wherein the mesopores are uniformly distributed throughout the carbon matrix, wherein the mesopores are uniform in size, wherein at least 50% of the ...

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Номер записи: 64

18-02-2021 дата публикации

Producing Fibers Using Spinnerets

Номер: US20210047754A1

Автор: Almahfoodh Sarah N., Choi Seung-Hak

Принадлежит:

Systems and methods can be used to produce fibers with external corrugations, internal corrugations, or both. These fibers can be used, for example, in hollow fiber membrane modules. 1. A machine for producing fibers for use in a hollow fiber module , the machine comprising:a spinneret having a base and a needle, the base and the needle at least partially defining a channel having an axis;at least one projection extending into the channel; anda motor connected to the at least one projection, the motor operable to rotate the at least one projection relative to the axis of the channel.2. The machine of claim 1 , wherein the at least one projection extends from the base into the channel.3. The machine of claim 2 , wherein the base is rotatable about the axis of the channel.4. The machine of claim 3 , wherein the motor is operably coupled to the base such that operation of the motor rotates the base about the axis of the channel.5. The machine of claim 1 , wherein the projection is detachable from the spinneret.6. The machine of claim 5 , comprising an insert detachably mounted to the base claim 5 , wherein the at least one projection extends from the insert into the channel.7. The machine of claim 6 , wherein the insert is rotatable relative to the base.8. The machine of claim 6 , further comprising a cap sized to receive the insert claim 6 , the cap rotatable relative to the base.9. The machine of claim 8 , wherein the motor is operably coupled to the cap such that operation of the motor rotates the cap about the axis of the channel.10. The machine of claim 1 , wherein the channel is a first channel and the needle defines a second channel inside the needle claim 1 , the second channel separated from the first channel by the needle.11. The machine of claim 1 , comprising a control unit operable to send a control signal to the motor.12. A machine for producing fibers claim 1 , the machine comprising:a spinneret defining a first channel, the spinneret having at least one ...

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Номер записи: 65

18-02-2016 дата публикации

NYLON LATENT-CRIMP YARN HAVING OUTSTANDING ELASTICITY AND COOL FEEL

Номер: US20160047066A1

Автор: LEE Dong Eun, NOH Dong Hyun, PARK No Woo

Принадлежит: KOLON FASHION MATERIAL, INC.

The present invention relates to a nylon latent-crimp yarn having outstanding elastic properties and cool feel, and is characterized in that a nylon 64 random copolymer (A) and one type of polymer (B) selected from nylon 6 and nylon 66 are subjected to conjugate spinning on a yarn cross-section in a side-by-side form. The nylon latent-crimp yarn according to the present invention has outstanding dyeing properties, dye fastness and elasticity, and exhibits high official moisture regain and a good cool feel. Also, the nylon latent-crimp yarn according to the present invention is inexpensive to produce, is highly suited to production, and also has outstanding yarn uniformity. For this reason, the nylon latent-crimp yarn according to the present invention is particularly useful as a fabric material for outdoor wear which is used like an elastic breathable waterproof polyurethane film. 1. A nylon latent-crimp yarn having outstanding elasticity and cool feeling , the nylon latent-crimp yarn is characterized in that a nylon 64 random copolymer (A) and one polymer (B) selected from nylon 6 and nylon 66 are subjected to conjugate spinning on a yarn cross-section in a side-by-side form.2. The nylon latent-crimp yarn according to claim 1 , wherein the nylon 64 random copolymer (A) includes 10 to 30 mol % of pyrrolidone which is a nylon 4 monomer claim 1 , and 70 to 90 mol % of caprolactam which is a nylon 6 monomer claim 1 , and has a molecular weight of 70 claim 1 ,000 to 120 claim 1 ,000 g/mol and a polydispersity index of 1 to 2.3. The nylon latent-crimp yarn according to claim 1 , wherein the weight ratio of the nylon 64 random copolymer (A) to the one polymer (B) selected from nylon 6 and nylon 66 claim 1 , which are subjected to conjugate spinning on the yarn cross-section in a side-by-side form claim 1 , is 25 to 50:75 to 50.4. The nylon latent-crimp yarn according to claim 1 , wherein the nylon latent-crimp yarn has a shrinkage rate in boiling water of 30 to 50% claim ...

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Номер записи: 66

16-02-2017 дата публикации

MEMBRANE PHOTOBIOREACTOR FOR TREATING NITROGEN AND PHOSPHORUS THAT ARE OUT OF LIMITS IN BIOGAS SLURRY AND TREATING METHOD THEREOF

Номер: US20170044474A1

Автор: Chen Xi, He Ning, Li Qingbiao, Shen Liang, WANG Haitao, Wang Yuanpeng

Принадлежит: XIAMEN UNIVERSITY

A membrane photobioreactor for treating nitrogen and phosphorus that are out of limits in a biogas slurry and treating method thereof, relating to biogas slurry treatment. The membrane photobioreactor for treating nitrogen and phosphorus that are out of limits in a biogas slurry is provided with a biogas slurry storage tank, peristaltic pumps, a microalgae cultivating tank, an air pump, a membrane photobioreactor and a hollow fiber membrane. The biogas slurry containing nitrogen and phosphorus that are out of limits is stored in the biogas slurry storage tank, and is driven by a first peristaltic pump to circularly flow in a silicone pipe; a microalgae solution is cultivated under illumination in the microalgae cultivating tank, and is driven by a second peristaltic pump to circularly flow in a silicone pipe, air is fed into the microalgae cultivating tank through the air pump, the biogas slurry and the microalgae solution are converged in the membrane photobioreactor, and the biogas slurry circularly flows inside the hollow fiber membrane pipe and the microalgae solution circularly flows outside the hollow fiber membrane pipe, the two being in a cross flow; and the nitrogen and phosphorus that are out of limits in the biogas slurry penetrate from the inside of the hollow fiber membrane and are absorbed by the microalgae solution outside the membrane, and after cyclical cultivation, nitrogen and phosphorus that are out of limits in the biogas slurry are absorbed, and the discharge standards are achieved. 1. A membrane photobioreactor for treating nitrogen and phosphorus that are out of limits in biogas slurry , the membrane photobioreactor comprising: a biogas slurry storage tank , a first peristaltic pump , a microalgae cultivating tank , a second peristaltic pump , an air pump , a membrane photobioreactor and a hollow fiber membrane ,wherein an air outlet of the air pump is connected to the microalgae cultivating tank, the hollow fiber membrane is embedded in the ...

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Номер записи: 67

16-02-2017 дата публикации

Acrylic fibers, method for manufacturing same, and spun yarn and knitted fabric using said fibers

Номер: US20170044693A1

Автор: Naoki OMIYAJI, Shingo NAKAHASHI, Yukio Onohara

Принадлежит: Mitsubishi Rayon Co Ltd

Provided are: acrylic fibers having 2-7% boiling water shrinkage and formed by the side-by-side conjugation of a copolymer A, which contains 5-10 mass % of an unsaturated monomer that can form a copolymer with acrylonitrile units, and a copolymer B, which contains 2-5 mass % of unsaturated monomer units that can form a copolymer with acrylonitrile units and 0.2-1.5 mass % of sulfonic acid group-containing monomer units; a method for manufacturing said fibers; a spun yarn containing said fibers; and a knitted fabric obtained from said spun yarn. The single fiber fineness of the heat-treated acrylic fibers is 1.7-6.6 dtex, the bulkiness is at least 380 cm3/g, the percentage of crimp is at least 15%, and the product (DKSDKE) of the knot strength (cN/dtex) and the knot elongation (%) is 10-25. The acrylic fibers have excellent crimp characteristics and anti-pilling properties.

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Номер записи: 68

16-02-2017 дата публикации

Conformable Microporous Fiber and Woven Fabrics Containing Same

Номер: US20170044696A1

Автор: Minor David J., Minor Raymond B.

Принадлежит:

Expanded polytetrafluoroethylene (ePTFE) monofilament fibers and woven fabrics formed from the ePTFE fillers are provided, The ePTFE fibers have a substantially rectangular configuration, a density less than about 1.0 glee, and an aspect ratio greater than 15. Additionally, the ePTFE fibers are microporous and have a node and fibril structure. The ePTFE fiber may be woven into a fabric without first twisting the fiber. A polymer membrane and/or a textile may be laminated to the woven fabric to produce a laminated article. The ePTFE woven fabric simultaneously possesses high moisture vapor transmission (highly breathable) and high water entry pressure (water resistant). The woven fabric is quiet, soft, and drapable, making it especially suitable for use in garments, gloves and footwear applications. Treatments may be provided to the surface of the ePTFE fiber and/or the woven fabric to impart one or more desired functionality, such as, for example, oleophobicity). 1. A woven fabric comprising:a plurality of warp fibers and weft fibers, each said warp fibers and each said weft fibers comprising expanded polytetrafluoroethylene (ePTFE) fibers having a substantially rectangular cross sectional configuration,wherein a pre-woven width of said ePTFE fiber is greater than a width allotted to said ePTFE fiber based on an end count or pick count of said woven fabric.2. The woven fabric of claim 1 , wherein said ePTFE fibers are monofilament fibers claim 1 ,3. The woven fabric of claim 1 , wherein said ePTFE fibers have a density less than about 1.2 g/cm.4. The woven fabric of claim 1 , wherein said ePTFE fibers have a pre weaving density less than about 0.85 g/cm.5. The woven fabric of claim 1 , wherein said ePTFE fibers have nodes and fibrils defining passageways through said fiber claim 1 , andwherein said fibrils have a length from about 5 microns to about 120 microns.6. The woven fabric of claim 1 , wherein said woven fabric has an air permeability less than about 5 cfm.7 ...

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Номер записи: 69

15-02-2018 дата публикации

MULTI-LAYERED MICROFIBERS AND USE THEREOF

Номер: US20180044817A1

Автор: Ben Dror Ohad, Dror Yael

Принадлежит:

Multi-layered electrospun microfibers and/or microtubes, comprising cells and/or molecules of interest. The invention is further directed to compositions comprising said microfibers and/or microtubes and methods of use thereof in various applications. 1. A concentric multi-layered electrospun microfiber comprising an exterior layer , an interior layer , and an intermediate layer residing between the exterior layer and the interior layer , said intermediate layer comprises one or more water soluble polymers , and said interior layer comprises cells and/or molecules of interest.2. The concentric multi-layered electrospun microfiber of claim 1 , wherein interior layer further comprises water soluble polymers or oligomers.3. The microfiber of being a triple-layer microfiber.4. The microfiber of claim 1 , wherein said microfiber is hollow.5. The microfiber of claim 1 , wherein said interior layer claim 1 , intermediate layer and/or interior layer are substantially porous layers.6. The microfiber of claim 1 , wherein said water soluble polymers of said intermediate layer are selected from natural polymers claim 1 , synthetic polymers or combinations thereof.7. The microfiber of claim 1 , wherein said exterior layer comprises one or more organic soluble polymers.8. The microfiber of claim 7 , wherein said organic soluble polymer of said exterior layer is selected from the group consisting of: poly(vinylidenefluoride) claim 7 , poly (e-caprolactone) (PCL) claim 7 , polyamide claim 7 , poly(siloxane) claim 7 , poly(silicone) claim 7 , poly(ethylene) claim 7 , poly(2-hydroxy ethylmethacrylate) claim 7 , poly(methyl methacrylate) claim 7 , poly(vinyl acetate) claim 7 , polyacrylamide claim 7 , poly(ethylene-co-vinyl acetate) claim 7 , poly(methacrylic acid) claim 7 , polylactide claim 7 , polyglycolide claim 7 , poly(lactide-co-glycolide) claim 7 , polyanhydride claim 7 , polyorthoester claim 7 , poly(carbonate) claim 7 , poly(acrylo nitrile) claim 7 , polyaniline claim 7 , ...

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Номер записи: 70

08-05-2014 дата публикации

Textile thread or fibre

Номер: US20140126137A1

Автор: Philip Noel Leonard

Принадлежит: Individual

Aspects of the present invention relate to a textile fibre, thread or yarn. The fibre, thread or yarn is generally for production into a fabric. Alternative aspects are described for achieving a cooling effect, energy harvesting, heating, energy generation, energy emission, and others.

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Номер записи: 71

14-02-2019 дата публикации

MEMBRANE-BASED GAS SEPARATION WITH RETENTATE SWEEP

Номер: US20190046922A1

Автор: Jensvold John A., Jensvold Kyle A.

Принадлежит:

A multi-stage polymeric membrane module system separates a gas, such as air, into components of high purity. In at least two of the stages, a portion of the retentate gas is directed into the low-pressure side of the module, to act as a sweep gas. The use of the sweep gas reduces the partial pressure of permeate gas on the low-pressure side of the membrane, and therefore improves the flow of permeate through the membrane. In a preferred embodiment, there are three modules. The output streams are taken from the retentate outlet of one module, and from the permeate outlet of another module. The output streams have very high purity, relative to the number of modules required, as compared with systems of the prior art. 1. Apparatus for non-cryogenic separation of a gas into components , comprising:{'b': 1', '2', '3', '1', '3, 'a) three stages, labeled Stage , Stage , and Stage , each of Stages - comprising a membrane module defining a path for an inlet gas to flow through a polymeric membrane, each module having an inlet connected to a high-pressure side upstream of the membrane, each module having a low-pressure side downstream of the membrane, the module including a permeate outlet for collecting gas which has permeated the membrane, and a retentate outlet for collecting gas which has not permeated the membrane,'}{'b': 1', '1', '1', '3, 'b) a conduit connecting the retentate outlet of Stage to the low-pressure side of the membrane of Stage , and a conduit connecting the permeate outlet of Stage to an inlet of Stage ,'}{'b': 2', '2', '2', '1, 'c) a conduit connecting the retentate outlet of Stage to the low-pressure side of the membrane of Stage , and a conduit connecting the permeate outlet of Stage to an inlet of Stage ,'}{'b': 3', '1', '2', '3, 'd) a conduit connecting the retentate outlet of Stage to the inlet of Stage , wherein product components are taken from the retentate outlet of Stage and the permeate outlet of Stage .'}211. The apparatus of claim 1 , ...

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Номер записи: 72

13-02-2020 дата публикации

POROUS MEMBRANES INCLUDING PENTABLOCK COPOLYMERS AND METHOD OF MAKING THE SAME

Номер: US20200047135A1

Автор: Gillard Timothy M., Jr. Clinton P., LASKOWSKI Carl A., Lechuga Hyacinth L., MCINTOSH Lucas D., MOK Michelle M., Waller

Принадлежит:

The present disclosure provides a porous membrane made of pentablock copolymer. The porous membrane includes an ABCBA block copolymer and has a number of pores. The A block is immiscible with each of the B block and the C block, the B block has a glass transition temperature (T) of 90 degrees Celsius or greater, and the C block has a Tof 25 degrees Celsius or less. The A block comprises a poly(alkylene oxide), a substituted epoxide, a polylactam, or a substituted carbonate; B block comprises a vinyl aromatic monomer or a polyalkylmethacrylate and C block comprises a polyacrylate, a polysiloxane or a polyisoprene. A method of making a porous membrane is also provided. The method includes forming a film or a hollow fiber from a solution including a solvent and solids containing an ABCBA block copolymer. The method further includes removing at least a portion of the solvent from the film or the hollow fiber and contacting the film or the hollow fiber with a nonsolvent. 1. A porous membrane comprising an ABCBA block copolymer , the porous membrane comprising a plurality of pores;wherein the A block is immiscible with each of the B block and the C block;{'sub': 'g', 'wherein the B block has a Tof 90 degrees Celsius or greater and is present in an amount ranging from 30% to 80% by weight, inclusive, of the total block copolymer, wherein the B block comprises a vinyl aromatic; and'}{'sub': 'g', 'wherein the C block has a Tof 25 degrees Celsius or less and is present in an amount ranging from 10% to 40% by weight, inclusive, of the total block copolymer.'}2. The porous membrane of claim 1 , wherein the pores comprise an average pore size at a surface of the membrane ranging from 1 nanometer (nm) to 500 nm claim 1 , inclusive.3. (canceled)4. The porous membrane of claim 1 , wherein the membrane is isoporous and wherein a standard deviation in pore diameter at a surface of the membrane is 4 nm or less from a mean pore diameter at the surface of the membrane when the mean ...

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Номер записи: 73

26-02-2015 дата публикации

POLYSULFONE-BASED HOLLOW FIBER MEMBRANE AND HOLLOW FIBER MEMBRANE MODULE THAT PURIFIES BLOOD PREPARATIONS

Номер: US20150053609A1

Автор: Kishikawa Tatsuya, OSABE Masahiro, Shimagaki Masaaki, Ueno Yoshiyuki

Принадлежит: Toray Industries, Inc.

A polysulfone-based hollow fiber membrane that purifies blood preparations, including a hydrophilic polymer on a surface thereof which contacts the blood preparation, wherein an abundance ratio of the hydrophilic polymer is from 40 to 60% by mass, and porosity at the surface is 8 to 30%. 112-. (canceled)14. The polysulfone-based hollow fiber membrane according to claim 13 , wherein water permeability of the membrane is 20 mL/hr/Pa/mor more.15. The polysulfone-based hollow fiber membrane according to claim 13 , wherein roundness of pores of the surface is 1 or less16. The polysulfone-based hollow fiber membrane according to claim 13 , wherein the membrane purifies platelet preparations.17. The polysulfone-based hollow fiber membrane according to claim 13 , wherein the abundance ratio of carbon derived from ester groups on the surface is 0.1 to 10% by number of atoms.18. The polysulfone-based hollow fiber membrane according to claim 13 , wherein the surface is an inner surface of the membrane.19. The polysulfone-based hollow fiber membrane according to claim 13 , wherein a void length X of the surface side is larger than a void length Y of a surface side opposite to the surface side.20. The polysulfone-based hollow fiber membrane according to claim 19 , wherein a value of the void length X divided by the void length Y is 1.1 or more.21. The polysulfone-based hollow fiber membrane according to claim 19 , wherein the void length X is from 0.1 to 4.0 μm.22. A hollow fiber membrane module that purifies blood preparations comprising the polysulfone-based hollow fiber membrane according to .23. The hollow fiber membrane module according to claim 22 , wherein a value of an end face length of the module divided by the flow passage cross-sectional area thereof is 50 to less than 200.24. The hollow fiber membrane module according to claim 22 , wherein a value of an amount of treatment of the blood preparation divided by the surface area of the surface of the hollow fiber ...

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Номер записи: 74

26-02-2015 дата публикации

HYDROPHOBIC ORGANIC-INORGANIC COMPOSITE HOLLOW FIBER MEMBRANE AND METHOD OF FORMING THE SAME

Номер: US20150053611A1

Автор: WANG Rong, Zhang Yuan

Принадлежит:

The invention relates to hydrophobic hollow fiber membranes, and in particular, to hydrophobic organic-inorganic composite hollow fiber membranes. Methods for forming the hydrophobic organic-inorganic composite hollow fiber membranes are also disclosed. The hydrophobic organic-inorganic composite hollow fiber membranes may be used in membrane contactor applications such as gas-liquid (G-L) contactor and liquid-liquid (L-L) contactor processes. Applications for G-L membrane contactors include gas streams purification (gas absorption), water ozonation, and water deoxygenation. Applications for L-L membrane contactors include direct contact membrane distillation and liquid-liquid extraction. 1. A method for forming an organic-inorganic composite hollow fiber membrane , wherein the composite hollow fiber membrane comprises an organic hollow fiber membrane having inorganic nanoparticles incorporated therein , the method comprising the steps of:(I) contacting an organic hollow fiber membrane with an aminosilane solution to obtain a silanol-functionalized organic hollow fiber membrane; and(IIA) contacting the silanol-functionalized organic hollow fiber membrane with a solution containing inorganic nanoparticles to obtain an inorganic nanoparticle-functionalized organic hollow fiber membrane and further contacting the inorganic nanoparticle-functionalized organic hollow fiber membrane with a solution containing hydrophobic compound molecules to obtain an organic-inorganic composite hollow fiber membrane, or(IIB) contacting the silanol-functionalized organic hollow fiber membrane with a solution containing a mixture of inorganic nanoparticles and hydrophobic compound molecules to obtain an organic-inorganic composite hollow fiber membrane, or(IIC) contacting the silanol-functionalized organic hollow fiber membrane with a solution containing inorganic nanoparticles to obtain an inorganic nanoparticle-functionalized organic hollow fiber membrane.2. The method of claim 1 , ...

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Номер записи: 75

22-02-2018 дата публикации

EXTENDABLE PRESSURIZED-TYPE HOLLOW FIBER MEMBRANE MODULE AND FILTRATION APPARATUS MANUFACTURED USING THE SAME

Номер: US20180050308A1

Автор: LEE Ah Reum

Принадлежит: KOLON INDUSTRIES, INC.

Disclosed are an extendable pressurized-type hollow fiber membrane module which facilitates improvement of filtrate quality through a multistep-filtration, enhanced easiness of installation and maintenance, decrease of footprint, and/or enlargement of filtration apparatus (without causing decrease of permeate flux of a unit hollow fiber membrane), and a filtration apparatus manufactured using the same. The filtration apparatus of the present invention comprises first and second pressurized-type hollow fiber membrane modules, wherein an inlet port of the first pressurized-type hollow fiber membrane module for introducing feed water and an outlet port of the second pressurized-type hollow fiber membrane module for discharging filtrate or air are coupled to each other. 1. A filtration apparatus comprising:a first pressurized-type hollow fiber membrane module; anda second pressurized-type hollow fiber membrane module,wherein,the first pressurized-type hollow fiber membrane module comprises:a first case including a first inlet port for introducing feed water thereinto and a first outlet port for ventilation or discharging filtrate therefrom; andfirst hollow fiber membranes in the first case,the second pressurized-type hollow fiber membrane module comprises:a second case including a second inlet port for introducing feed water thereinto and a second outlet port for ventilation and discharging filtrate therefrom; andsecond hollow fiber membranes in the second case, andthe first inlet port of the first pressurized-type hollow fiber membrane module and the second outlet port of the second pressurized-type hollow fiber membrane module are coupled to each other so that the first and second pressurized-type hollow fiber membrane modules are in fluid communication with each other.2. The filtration apparatus of claim 1 , wherein:the first and second outlet ports are filtrate outlet ports, andthe first and second cases further include first and second air outlet ports respectively ...

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Номер записи: 76

25-02-2021 дата публикации

CROSS-LINKED CELLULOSIC FIBERS

Номер: US20210054532A1

Автор: Lindsay Stephen Michael, Zawadzki Michael Andrew

Принадлежит:

Disclosed are processes for manufacturing cross-linked cellulosic fibers and tissue products comprising cross-linked cellulosic fibers, manufactured by reacting an oxidized polyol, in particular, an oxidized sugar having at least two aldehyde groups with a plurality of cellulosic fibers to yield treated fibers and heating the treated fibers at a temperature greater than about 140° C. to cure the treated fibers. In particular, said sugar is sucrose and the oxidising agent comprises hydrogen peroxide. The instant cross-linked fibers are manufactured without well-known cross-linking agents such as formaldehyde or polycarboxylic acids, and have good brightness and color and resist yellowing. Furthermore, the cross-linked cellulosic fibers are generally free from off odors and the instant cross-linked cellulosic fibers have enhanced properties, such as improved wet bulk, compared to uncross-linked fibers. 1. A method of manufacturing cross-linked cellulosic fibers comprising the steps of providing a plurality of cellulosic fibers , forming the plurality of cellulosic fibers into a mat , treating the mat with an oxidized polyol to yield treated cellulosic fibers and drying the treated cellulosic fibers.2. The method of wherein the oxidized polyol comprises an oxidized sugar having at least two aldehyde groups and wherein the sugar is selected from the group consisting of glucose claim 1 , fructose claim 1 , sucrose claim 1 , maltose claim 1 , lactose claim 1 , mannose claim 1 , xylose claim 1 , raffinose claim 1 , stachyose claim 1 , and mixtures thereof.3. The method of wherein the drying step is carried out at a temperature from about 140 to about 200° C. and the treated cellulosic fibers are dried to a consistency greater than about 90 percent.4. The method of further comprising the step of fiberizing the treated cellulosic fibers prior to the drying step.5. The method of further comprising the step of treating the mat of cellulosic fiber with a catalyst selected from ...

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Номер записи: 77

22-02-2018 дата публикации

TRILOBAL FILAMENTS AND SPINNERETS FOR PRODUCING THE SAME

Номер: US20180051393A1

Автор: Meinders Maarten, Pustolski Paul

Принадлежит:

Various implementations include a filament that includes three lobes that extend from a central portion of the filament, and the central portion defines an axial void. Each lobe bulges outwardly at its proximal end adjacent the central portion and has edges that form a continuous concave curve toward its distal end relative to an axis A-A that extends through the distal end of the respective lobe and the central portion of the filament. Thus, a width of each lobe at the proximal end thereof is greater than a width of each lobe at or adjacent the distal end, and adjacent edges of adjacent lobes intersect each other at concave proximal ends of the adjacent edges. 1. A filament formed from a thermoplastic polymer , the filament comprising three lobes that extend from a central portion of the filament , each lobe having a proximal end adjacent the central portion and a distal end radially spaced apart from the proximal end , the edges of each lobe between the proximal end and the distal end thereof define a continuous concave curve relative to an axis extending through the distal end of the respective lobe and the central portion of the filament,', 'a width of each lobe is greatest at the proximal end thereof,', 'adjacent edges of adjacent lobes intersect each other at concave proximal ends of the adjacent edges, and', 'the central portion defines an axial void., 'wherein2. The filament of claim 1 , wherein the void is round.3. The filament of claim 1 , wherein the void is triangular.4. The filament of claim 3 , wherein the void has concave shaped sides relative to a central axis extending axially through the void.5. The filament of claim 3 , wherein vertices of the void extend toward the intersections of the adjacent edges of adjacent lobes.6. The filament of claim 1 , wherein lines tangential to adjacent edges of adjacent lobes at the proximal ends of the adjacent edges intersect at an angle of between 120° and 180°.7. The filament of claim 1 , wherein a line ...

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Номер записи: 78

22-02-2018 дата публикации

REEL CHANGING DEVICE AND REEL CHANGING METHOD

Номер: US20180051394A1

Автор: KÄSTNER Falk

Принадлежит:

A reel changing device is described for reeling fiber bundles from a fiber strand exiting a spinning device, including at least a first reel carrier and a second reel carrier on each of which a reel suited for winding up the fiber strand is arranged and which are movably received and guided in at least a first reel guide and a second reel guide so that the reels are adapted to be positioned one after another in an exit direction of the fiber strand so as to enable, in the case of a reel change, the fiber strand to be directly transferred from the first reel arranged on the first reel carrier to the second reel arranged on the second reel carrier. Moreover, a reel changing method in such reel changing device is described. 19.-. (canceled)10. A reel changing device for reeling fiber bundles from a fiber strand exiting a spinning device in an exit direction , the reel changing device comprising:a first reel guide and a second reel guide;a first reel carrier guided by the first reel guide and a second reel carrier guided by the second reel guide, each of the first reel carrier and the second reel carrier configured to receive a reel configured for winding the fiber strand;wherein the first and second reel guides position the first and second reel carriers so that the reels received by the first and second reel carrier are positioned one after another in the exit direction of the fiber strand so as to enable, in the case of a reel change, the fiber strand to be directly transferred from the first reel arranged on the first reel carrier to the second reel arranged on the second reel carrier.11. The reel changing device according to claim 10 , wherein the first and second reel guides are each linear guides arranged adjacent to the spinning device claim 10 , extending horizontally away from the exit side of the spinning device claim 10 , and arranged parallel to the exit direction claim 10 , and wherein the first and second reel carriers are linearly movable within and ...

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Номер записи: 79

01-03-2018 дата публикации

IMPROVED SILK FIBERS

Номер: US20180057548A1

Автор: BRESLAUER David, Kittleson Joshua, Wray Lindsay

Принадлежит:

Methods and compositions are provided for improved proteinaceous block copolymer fibers based on long repeat units having molecular weight of greater than about 10 kDal. Each repeat unit includes more than about 150 amino acid residues that are organized into a number of “quasi-repeat units.” The fibers have improved mechanical properties that better recapitulate those of C the native silk fibers. 1. A proteinaceous block copolymer fiber , wherein the block copolymer comprises: more than 150 amino acid residues and having a molecular weight of at least 10 kDal;', 'an alanine-rich region with 6 or more consecutive amino acids, comprising an alanine content of at least 80%;', 'a glycine-rich region with 12 or more consecutive amino acids, comprising a glycine content of at least 40% and an alanine content of less than 30%; and, 'at least two occurrences of a repeat unit, the repeat unit comprisingwherein the fiber comprises at least one property selected from the group consisting of a modulus of elasticity greater than 550 cN/tex, an extensibility of at least 10% and an ultimate tensile strength of at least 15 cN/tex.2. The fiber of claim 1 , wherein the repeat unit comprises from 150 to 1000 amino acid residues.3. The fiber of any of - claim 1 , wherein the repeat unit has a molecular weight from 10 kDal to 100 kDal.4. The fiber of any of - claim 1 , wherein the repeat comprises from 2 to 20 alanine-rich regions.5. The fiber of any of - claim 1 , wherein each alanine-rich region comprises from 6 to 20 consecutive amino acids claim 1 , comprising an alanine content from 80% to 100%.6. The fiber of any of - claim 1 , wherein the repeat comprises from 2 to 20 glycine-rich regions.7. The fiber of any of - claim 1 , wherein each glycine-rich region comprises from 12 to 150 consecutive amino acids claim 1 , comprising a glycine content from 40% to 80%.8. The fiber of claim 1 , wherein the repeat unit comprises 315 amino acid residues claim 1 , 6 alanine-rich regions claim ...

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Номер записи: 80

15-05-2014 дата публикации

NON-WOVEN OF SPUNBONDED THERMOPLASTIC FILAMENTS HAVING IMPROVED WELDABILITY PROPERTIES AND METHOD FOR MANUFACTURING SUCH A NON-WOVEN

Номер: US20140135725A1

Автор: HOYAS Stéphanie

Принадлежит: DOUNOR

The object of the present disclosure is a non-woven of spunbonded thermoplastic filaments comprising in a characteristic way, at least 95% by mass (g) of its surface mass (g/m) of at least two polypropylene A and B polymers, said filaments having a titer of less than or equal to 1.3 dtex, said non-woven having a surface mass of less than or equal to 35 g/m, the welding rate being at least 10% and at most 25% and at least 88% by mass (g) of its surface mass (g/m) of said polypropylene A polymer obtained by polymerization in the presence of at least one polymerization catalyst based on a metallocene and at most 12% by mass (g) of its surface mass of said polypropylene B polymer. 1. A non-woven of spunbonded thermoplastic filaments wherein said non-woven comprises at least 95% by mass (g) of it surface mass (g/m) of at least two polypropylene A and B polymers , said filaments having a titer of less than or equal to 1.3 dtex , said non-woven having a surface mass of less than or equal to 35 g/m , the welding rate being at least 10% and at most 25% , and wherein said non-woven comprises at least 88% by mass (g) of its surface mass (g/m) of said polypropylene A polymer obtained by polymerization in the presence of at least one polymerization catalyst based on metallocene and at most 12% by mass (g) of its surface mass of said polypropylene B polymer.2. The non-woven according to claim 1 , wherein said non-woven comprises at least 93% by mass of its surface mass of said polypropylene A polymer.3. The non-woven according to claim 1 , wherein the filaments have a titer comprised between 0.01 dtex and 1.2 dtex.4. The non-woven according to claim 3 , wherein the filaments have a titer comprised between 0.5 dtex and 1.1 dtex.5. The non-woven according to claim 1 , wherein said non-woven has a surface mass of at least 5 g/mand of at most 30 g/m.6. The non-woven according to claim 5 , wherein said non-woven has a surface mass of at least 10 g/mand at most 25 g/m.7. The non-woven ...

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Номер записи: 81

01-03-2018 дата публикации

Spun Yarn Comprising Carbon Staple Fibers and Method of Preparing the Same

Номер: US20180057970A1

Автор: BAE Yun Seok, BAN Kyun Ha, HONG Chang Min

Принадлежит:

Disclosed herein is spun yarn and a method of preparing the same. The spun yarn includes carbon staple fibers including about 97 wt % or more of carbon, and thermoplastic resin fibers. The spun yarn includes carbon staple fibers prepared from scrap generated during manufacture of carbon fiber-reinforced plastic products, and can have good mechanical properties and conductivity. 1. Spun yarn comprising:carbon staple fibers comprising about 97 wt % or more of carbon, wherein the wt % is based on the total weight of the carbon staple fibers; andthermoplastic resin fibers.2. The spun yarn according to claim 1 , wherein the carbon staple fibers are obtained by carbonizing carbon fiber-reinforced plastic scrap at about 900° C. to about 1 claim 1 ,400° C.3. The spun yarn according to claim 1 , wherein the carbon staple fibers have a tensile modulus of about 100 GPa to about 1 claim 1 ,000 GPa claim 1 , as measured in accordance with ASTM D3379 claim 1 , and a surface resistance of about 1×10Ω·cm to about 1×10Ω·cm claim 1 , as measured in accordance with ASTM D257.4. The spun yarn according to claim 1 , wherein the carbon staple fibers have an average diameter of about 5 μm to about 10 μm and an average length of about 20 mm to about 80 mm.5. The spun yarn according to claim 1 , wherein the thermoplastic resin fibers comprise at least one of polyamide fibers claim 1 , polyester fibers claim 1 , and acrylic fibers.6. The spun yarn according to claim 1 , wherein the thermoplastic resin fibers have an average diameter of about 5 μm to about 30 μm and an average length of about 10 mm to about 110 mm.7. The spun yarn according to claim 1 , wherein the spun yarn comprises about 10 wt % to about 60 wt % of the carbon staple fibers and about 40 wt % to about 90 wt % of the thermoplastic resin fibers.8. The spun yarn according to claim 1 , wherein the spun yarn has a tensile modulus of about 30 GPa to about 120 GPa claim 1 , as measured in accordance with ASTM D3379.9. The spun yarn ...

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Номер записи: 82

01-03-2018 дата публикации

HOLLOW FIBER MEMBRANE MANUFACTURING METHOD

Номер: US20180057974A1

Автор: ISHIZAKI Toshiyuki, Iwai Kenta

Принадлежит: Toray Industries, Inc.

An object of the present invention is to provide a stretching method for producing a membrane of narrowed hollow fibers while suppressing hollow fiber crushing (flattening), using a simple stretching process. The present invention relates to a method for manufacturing a hollow fiber membrane that performs narrowing of diameter of a hollow fiber by stretching, that is, includes a step of narrowing diameter of a hollow fiber by stretching the hollow fiber that has been subjected to a spinning step, using rolls each of which is formed with a groove. 16-. (canceled)7. A method for manufacturing a hollow fiber membrane , the method comprising:a spinning step of forming a hollow fiber; anda stretching step of stretching the hollow fiber using stretching rolls each of which has a groove extending in a circumferential direction of the stretching roll,wherein, in the groove of each of the stretching rolls, wall surfaces thereof facing each other come into contact with the hollow fiber.8. The method for manufacturing a hollow fiber membrane according to claim 7 , wherein a distance between the wall surfaces of the groove is larger than an outer diameter of the hollow fiber at an outermost portion in a radial direction of the stretching roll and smaller than the outer diameter of the hollow fiber at an innermost portion in the radial direction.9. The method for manufacturing a hollow fiber membrane according to claim 7 , wherein claim 7 , in the groove claim 7 , the wall surfaces facing each other form an angle that is larger than or equal to 5° and smaller than or equal to 90°.10. The method for manufacturing a hollow fiber membrane according to claim 8 , wherein claim 8 , in the groove claim 8 , the wall surfaces facing each other form an angle that is larger than or equal to 5° and smaller than or equal to 90°.11. The method for manufacturing a hollow fiber membrane according to claim 7 , wherein surfaces of the groove of each of the stretching rolls are subjected to satin ...

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Номер записи: 83

22-05-2014 дата публикации

MEMBRANE DERIVED FROM POLYETHER- AND SILICEOUS FILLER-CONTAINING SILICONE COMPOSITION

Номер: US20140137736A1

Автор: Ahn Dongchan, Greiner Aaron J., Hrabal James S., Wong Christopher

Принадлежит: Dow Corning Corporation

The present invention relates to silicone compositions that are useful for the production of membranes that are selectively permeable to at least one component of a gas mixture. The invention provides a method of forming the membrane. The invention also provides a method of separating components in a feed mixture using the membrane. The membrane includes a reaction product (e.g. cured product) of a silicone composition including an organopolysiloxane having at least two unsaturated aliphatic carbon-carbon bond-containing groups per molecule; a crosslinking agent having at least two silicon-bonded hydrogen atoms per molecule; a hydrosilylation catalyst; a polyether containing at least one unsaturated aliphatic carbon-carbon bond-containing group; and a siliceous filler. 1. An unsupported membrane comprising: (A) an organopolysiloxane having an average of at least two silicon-bonded unsaturated aliphatic carbon-carbon bond-containing groups per molecule;', '(B) an organo silicon compound having an average of at least two silicon-bonded hydrogen atoms per molecule;', '(C) a polyether having at least one unsaturated aliphatic carbon-carbon bond-containing group per molecule;', '(D) a siliceous filler; and', '(E) a hydrosilylation catalyst;, 'a reaction product of a silicone composition, the silicone composition comprising'}wherein the membrane is unsupported.2. The unsupported membrane of claim 1 , wherein the organopolysiloxane having an average of at least two silicon-bonded unsaturated aliphatic carbon-carbon bond-containing groups per molecule comprises a silicone resin.3. The unsupported membrane of claim 1 , wherein the silicone resin comprises RRSiOsiloxane units and SiOsiloxane units wherein each Ris independently selected from monovalent hydrocarbon and monovalent halogenated hydrocarbon groups claim 1 , both free of aliphatic unsaturation claim 1 , Ris Ror alkenyl claim 1 , the mass ratio of RRSiOunits to SiOunits is from about 4:1 to about 2.3:1 claim 1 , and ...

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Номер записи: 84

22-05-2014 дата публикации

POROUS POLYMER FILM AND PRODUCTION METHOD FOR POROUS POLYMER FILM

Номер: US20140138304A1

Автор: Miki Jun, Shiotani Yuko, Tanaka Yoshito

Принадлежит: DAIKIN INDUSTRIES, LTD.

The present invention aims to provide a porous polymer membrane that is excellent not only in water permeability and alkali resistance but also in mechanical strength. The porous polymer membrane of the present invention includes a fluoropolymer (A) that includes a vinylidene fluoride unit and a tetrafluoroethylene unit. 1. A porous polymer membrane comprising a fluoropolymer (A) that includes a vinylidene fluoride unit and a tetrafluoroethylene unit wherein the membrane is a hollow fiber membrane.2. The porous polymer membrane according to claim 1 , wherein the fluoropolymer (A) includes the vinylidene fluoride unit and the tetrafluoroethylene unit in a molar ratio of the vinylidene fluoride unit/tetrafluoroethylene unit of 50 to 90/50 to 10.3. The porous polymer membrane according to claim 1 , wherein the porous polymer membrane has a surface that has a ratio of oxygen/fluorine content (O/F) on the surface of not less than 0.050 but less than 0.150 when measured by X-ray photoelectron spectroscopy (XPS).4. The porous polymer membrane according to claim 1 ,wherein the porous polymer membrane has a surface that has a (C—F/C—H) ratio representing a ratio of C—F bonds to C—H bonds on the surface of larger than 0.50 when measured by X-ray photoelectron spectroscopy (XPS).6. The porous polymer membrane according to claim 5 ,{'b': '1', 'wherein the R in the formula () is a hydrogen atom, a methyl group, or an ethyl group.'}7. (canceled)8. The porous polymer membrane according to claim 1 ,wherein the membrane is for treating water.9. A method of producing the porous polymer membrane according to claim 1 , comprising at least a step of forming a porous membrane from a fluoropolymer (A′) that includes a vinylidene fluoride unit and a tetrafluoroethylene unit.10. The method of producing the porous polymer membrane according to claim 9 ,wherein the step of forming a porous membrane produces a porous membrane-shaped product through a non-solvent induced phase separation method ...

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Номер записи: 85

11-03-2021 дата публикации

SCALE-DOWN TANGENTIAL FLOW DEPTH FILTRATION SYSTEMS AND METHODS OF FILTRATION USING SAME

Номер: US20210069648A1

Автор: Bransby Michael, Carroll Derek

Принадлежит: REPLIGEN CORPORATION

The present disclosure relates to hollow fiber tangential flow filters, including hollow fiber tangential flow depth filters, for various applications, including bioprocessing and pharmaceutical applications, systems employing such filters, and methods of filtration using the same. 1. A thick walled hollow fiber filter element comprising:a first end and a second end, a porous wall extending between the first and second end, and a lumen running therethrough, said lumen open to the first and second ends; anda non-permeable covering disposed about a portion of an exterior surface of the thick walled hollow fiber filter element, said non-permeable covering extending from a region proximate the first end toward the second end,wherein said non-permeable covering extends circumferentially about the thick walled hollow fiber filter element, andwherein a portion of the exterior surface of the thick walled hollow fiber is not covered by the covering.2. The thick walled hollow fiber filter element of claim 1 , further comprisinga water tight seal disposed about the exterior surface of each of the first and second ends between said exterior surface and a housing enclosing said thick walled hollow fiber filter element, wherein the non-permeable covering is proximate to the water tight seal at the first end.3. The thick walled hollow fiber filter element of claim 1 , wherein the non-permeable covering is also disposed about the exterior of the thick walled hollow fiber filter proximate to the second end.4. The thick walled hollow fiber filter element of claim 3 , wherein the covering comprises polyurethane.5. The thick walled hollow fiber filter element of claim 4 , wherein the water tight seal comprises polyurethane.6. A method of scaling a filtration process utilizing a thick walled hollow fiber filter element of claim 1 , the method comprising:selecting a first thick walled hollow fiber filter element characterized by a first exterior surface area that is not covered by the ...

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Номер записи: 86

11-03-2021 дата публикации

Steam-Producing Process and System

Номер: US20210071861A1

Автор: BELDON ALYSON SAGLE, Genkin Eugene S.

Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

System and process for producing steam in a steam-hydrocarbon reforming facility where oxygen is removed from demineralized water using a membrane degasifier. The membrane degasifier operates at a lower temperature compared to a deaerator, which is the conventional technology for removing oxygen. 1. A process for producing steam in a steam-hydrocarbon reforming facility , the process comprising:cooling a reformate containing water in an amount effective to condense at least a portion of the water in the reformate and thereby forming condensed water and water-depleted reformate;separating the condensed water from the water-depleted reformate in a separator thereby forming a water-depleted reformate gas and a process condensate, the process condensate formed from the condensed water;{'sub': 2', '2, 'passing the process condensate to a steam stripping unit, stripping at least COfrom the process condensate, and withdrawing a CO-depleted process condensate from the steam stripping unit;'}{'sub': '2', 'passing the CO-depleted process condensate to a steam drum to produce a product steam;'}{'sub': 2', '2, 'passing demineralized make-up water to a membrane separation unit to remove at least Ofrom the demineralized make-up water to form an O-depleted demineralized make-up water; and'}{'sub': '2', 'passing a first portion or all of the O-depleted demineralized make-up water to the steam drum to produce the product steam;'}{'sub': 2', '2, 'wherein the CO-depleted process condensate and the O-depleted demineralized make-up water are each heated by indirect heat exchange with reformate prior to being introduced into the steam drum.'}2. The process as claimed in wherein not all of the O-depleted demineralized make-up water is passed to the steam drum claim 1 , the process further comprising:{'sub': '2', 'passing a second portion of the O-depleted demineralized make-up water to a second steam drum to produce a second product steam.'}3. The process as claimed in wherein at least a ...

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Номер записи: 87

19-03-2015 дата публикации

Porous membrane production method, and porous membrane drying device

Номер: US20150075027A1

Автор: Masaki Kurashina, Osamu Maehara, Toshinori Sumi

Принадлежит: Mitsubishi Rayon Co Ltd

The present invention of a method for producing a porous membrane including a solidification step of forming a porous membrane, and a heating step of drying the porous membrane, wherein the heating step includes at least a water reduction step of the porous membrane, the water reduction step uses a heating medium, and the temperature of the heating medium (T gh ) satisfies a relation of t gh >T d, when T d represents the heat deformation temperature of a membrane material. The present invention of a drying device of a porous membrane including a water reduction unit, and a final drying unit, wherein the drying device includes a membrane-surface-temperature measurement means for measuring the surface temperature of the porous membrane and the final drying unit, and a control means for controlling the temperature and/or the flow speed of the heating medium of the water reduction unit.

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Номер записи: 88

27-02-2020 дата публикации

Method for manufacturing structure

Номер: US20200067069A1

Автор: Byoungkuk SON, Eunkyung Park, Jang Wook Choi, Minchul Jang, Se Ho Park, Suk Il Youn, Sung Hyeon PARK

Принадлежит: Korea Advanced Institute of Science and Technology KAIST, LG Chem Ltd

A method of preparing a structure, more particularly, a method of preparing a structure capable of ensuring a space for carrying an electrode active material by a simple method which includes an electrospinning process using a double nozzle electrospinning device and a heat treatment process.

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Номер записи: 89

15-03-2018 дата публикации

Asymmetric Modified Carbon Molecular Sieve Hollow Fiber Membranes Having Improved Permeance

Номер: US20180071691A1

Автор: Nitesh BHUWANIA, Paul Jason Williams, William John Koros

Принадлежит: Georgia Tech Research Corp, Shell Oil Co

The present invention provides an asymmetric modified CMS hollow fiber membrane having improved gas separation performance properties and a process for preparing an asymmetric modified CMS hollow fiber membrane having improved gas separation performance properties. The process comprises treating a polymeric precursor fiber with a solution containing a modifying agent prior to pyrolysis. The concentration of the modifying agent in the solution may be selected in order to obtain an asymmetric modified CMS hollow fiber membrane having a desired combination of gas permeance and selectivity properties. The treated precursor fiber is then pyrolyzed to form an asymmetric modified CMS hollow fiber membrane having improved gas permeance.

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Номер записи: 90

16-03-2017 дата публикации

METHOD AND DEVICE FOR MELT-SPINNING, DRAWING, CRIMPING AND WINDING MULTIPLE THREADS

Номер: US20170072611A1

Автор: KALIES Stefan, Kaulitzki Marco, Stündl Mathias, Westphal Jan

Принадлежит:

Techniques are directed to melt spinning, drawing, crimping and winding multiple threads. The threads are spun from a plurality of spinnerets of a spinning device and are drawn as a thread group by a drawing device and are subsequently fed for crimping next to one another to a plurality of texturing units. In order to obtain identical treatment of all threads within the thread group, the threads are guided individually with a plurality of wraps next to one another on a godet unit and, after running off from the godet unit, are guided in a straight thread run parallel next to one another into the texturing units. To this end, adjacent texturing units of the crimping device form a treatment spacing between themselves which is such that, in the case of being guided individually with a plurality of wraps on the godet unit, the threads can be guided in parallel in a straight thread run. 1. Method for melt-spinning , drawing , crimping , and winding a plurality of threads , in which method the threads from a plurality of spinning nozzles are spun beside one another , on at least one godet unit are collectively guided as a thread skein , are drawn , and for crimping are subsequently guided beside one another to a plurality of texturing apparatuses , wherein the threads in a singularized manner and with a plurality of wrappings are guided beside one another on the godet unit , and in which method the threads after running off from the godet unit are guided into the texturing apparatuses in a straight thread run in parallel beside one another.2. Method as claimed in claim 1 , wherein for crimping the threads are each compressed to form a thread plug claim 1 , and in that the thread plugs are guided in parallel beside one another claim 1 , and are dissolved to form crimped threads.3. Method as claimed in claim 2 , wherein the threads after crimping are drawn off in parallel beside one another by a godet unit claim 2 , wherein the threads in a singularized manner and with a ...

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Номер записи: 91

05-03-2020 дата публикации

VARIABLE-DIAMETER SPINNING NOZZLE AND PROCESSING DEVICES FOR HOLLOW FIBER MEMBRANE BUNDLE AND MEMBRANE MODULE

Номер: US20200070100A1

Автор: He Kui, Huang Simin, Yang Minlin, Yuan Wuzhi

Принадлежит:

The present invention relates to a variable-diameter spinning nozzle, processing devices for hollow fiber membrane bundle and membrane module. The variable-diameter spinning nozzle comprises a center round tube, a middle round tube and an external chamber which are sequentially nested, and a first drive mechanism for driving the middle round tube to move vertically upwards and downwards. The bottoms of the center round tube, the middle round tube and the external chamber are leveled. The variable-diameter spinning nozzle provided by present invention obtains membrane fiber by adjusting the location of the middle round tube, and this membrane fiber involves membrane fiber heads with relatively large diameter on both ends and a membrane fiber middle section with relatively small diameter. In the subsequent process of binding and assembly of membrane module, porosity of the membrane fiber middle section can be adjusted by controlling a diameter ratio of the membrane fiber head to the membrane fiber middle section, and thus arbitrary fill density and regular arrangement of membrane module are achieved. 11112131412111213. A variable-diameter spinning nozzle , characterized in that the variable-diameter spinning nozzle comprises a center round tube () , a middle round tube () and an external chamber () which are sequentially nested , and a first drive mechanism () for driving the middle round tube () to move vertically upwards and downwards; bottoms of the center round tube () , the middle round tube () and the external chamber () are leveled.21211131414114214314112142143. The variable-diameter spinning nozzle of claim 1 , wherein the middle round tube () protrudes from the center round tube () and the external chamber () claim 1 , said first drive mechanism () includes a first gearwheel () claim 1 , a second gearwheel () and a first motor (); the first gearwheel () is disposed at a protruding portion of said middle round tube () claim 1 , the second gearwheel () engages ...

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Номер записи: 92

19-03-2015 дата публикации

Cell Suspension and Use Thereof

Номер: US20150079153A1

Автор: Dolphin William, Quick Andrew

Принадлежит: Avita Medical Ltd.

The present invention provides for methods and devices suitable for producing a transplantable cellular suspension of living tissue suitable for promoting tissue regeneration in an epithelium-related procedure, as well as compositions produced therefrom. The cellular suspension can include viable and functioning cells at various stages of differentiation, including undifferentiated/progenitor cells and differentiated cells, as well as those in between. In certain embodiments, the cellular suspension can be subjected to a stress to induce a heat shock response therein, or be exposed to an exogenously supplied agent such as heat shock protein or a fragment thereof, hyaluronic acid, platelet-enriched plasma, and/or growth factors. The cellular suspension can be applied directly to a patient's recipient site for in vivo regeneration, or be cultured or seeded to a matrix for in vitro growth/regeneration. 1. A cell suspension for use in an epithelium-related procedure , comprising:a population of cells including viable and functioning cells derived from an epithelial tissue sample;wherein the population of cells, prior to being used in an epithelium-related procedure, are exposed to a condition selected from the group consisting of stress and an exogenous agent;wherein the population of cells, when used in said epithelium-related procedure and applied to a recipient site, promote treatment, healing, reconstructing, resurfacing, repigmentation and/or regeneration of epithelial tissues.2. The cell suspension of claim 1 , wherein the viable and functioning cells include differentiated cells and cells capable of dividing or differentiating.3. The cell suspension of claim 1 , wherein the epithelial tissue sample is obtained from one or more of skin epithelium claim 1 , respiratory epithelium claim 1 , vascular epithelium claim 1 , corneal epithelium claim 1 , and glandular epithelium.4. The cell suspension of claim 1 , wherein when the epithelial tissue sample is skin tissue ...

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Номер записи: 93

16-03-2017 дата публикации

TUBULAR FIBER ARRANGEMENT OF A FIBER-REINFORCED COMPOSITE PART

Номер: US20170073844A1

Автор: BAUMGART GREGOR, BROCKMANNS KARL-JOSEF, KUEMPERS FRANZ-JUERGEN

Принадлежит:

In the production of a tubular fiber arrangement as an intermediate product for a composite part, the local conditions are taken into account in an especially simple and reliable manner with respect to the geometry of the composite part and its load profile. When forming the composite part on a core, the fiber mass supplied during the formation of the tube is proportional to the local circumference of the composite part which results from the diameter. The advancement speed of the core remains substantially constant. 1a tubular fiber arrangement forming an intermediate product for a fiber-reinforced composite part having a variable cross-section along a length thereof, wherein said tubular fiber arrangement is formed on a core having a shape corresponding to the composite part;a fiber mass of said tubular fiber arrangement in a cross section of the core being proportional to a local circumference resulting from a diameter of the core; andwherein an alignment of the fibers in the tubular fiber arrangement is largely constant, irrespective of the local circumference of the core.. An article of manufacture, comprising: This application is a divisional application of Ser. No. 13/945,069, filed Jul. 18, 2013, which was a continuation, under 35 U.S.C. §120, of copending international application No. PCT/EP2012/050650, filed Jan. 17, 2012, which designated the United States; this application also claims the priority, under 35 U.S.C. §119, of German patent application No. DE 10 2011 002 840.4, filed Jan. 18, 2011; the prior applications are herewith incorporated by reference in their entirety.The present invention relates to a method for producing a tubular fiber arrangement as an intermediate product for a fiber-reinforced composite part. The tubular fiber arrangement has a cross-sectional shape that changes along its length.Fiber-reinforced composite parts have been gaining increasing popularity because, as compared to conventional components, they have a comparatively ...

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Номер записи: 94

05-03-2020 дата публикации

Hollow Fiber Structure of Aerogel and Method for Manufacturing the Hollow Fiber Structure

Номер: US20200071850A1

Автор: Shiau Deng-Po

Принадлежит:

A fiber structure includes a fiber thread including a plurality of monofilaments juxtaposed to and combined with each other. Each of the monofilaments has a hollow shape. Each of the monofilaments is made of an aerogel and an artificial polymer. The aerogel and the artificial polymer are mixed together. 1. A fiber structure comprising:a fiber thread including a plurality of monofilaments juxtaposed to and combined with each other;wherein:each of the monofilaments has a hollow shape;each of the monofilaments is made of an aerogel and an artificial polymer; andthe aerogel and the artificial polymer are mixed together.2. The fiber structure of claim 1 , wherein the aerogel of each of the monofilaments has a mass proportion of 0.5-10%.3. The fiber structure of claim 1 , wherein the artificial polymer of each of the monofilaments is made of PP claim 1 , polyester claim 1 , Nylon or acrylic.4. The fiber structure of claim 1 , wherein the fiber thread has a specification of 70D/72F.5. A method for manufacturing a fiber structure claim 1 , comprising:preparing a staple including an aerogel and an artificial polymer,hot melting the staple into a spinning solution and spinning the spinning solution by a plurality of annular injection holes to form a plurality of hollow monofilaments, andjuxtaposing and combining the monofilaments into a fiber thread.6. The method of claim 5 , wherein the step of preparing a staple includes obtaining powder of the aerogel and particles of the artificial polymer claim 5 , and evenly mixing the powder of the aerogel and the particles of the artificial polymer to form the staple.7. The method of claim 5 , wherein the step of preparing a staple includes adding powder of the aerogel and mixing the powder of the aerogel with the artificial polymer during polymerization of the artificial polymer to form the staple.8. The method of claim 5 , further comprising:working the fiber thread after the step of juxtaposing and combining the monofilaments. The ...

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Номер записи: 95

18-03-2021 дата публикации

MODIFIED CROSS-SECTION FIBER AND METHOD FOR MANUFACTURING SAME AND NONWOVEN FABRIC AND NOISE-ABSORBING AND -INSULATING MATERIAL COMPRISING MODIFIED CROSS-SECTION FIBER

Номер: US20210079559A1

Автор: INAGAKI Tatsuhiko

Принадлежит: MITSUBISHI CHEMICAL CORPORATION

The invention provides a modified cross-section fiber is provided having a single fiber fineness of 0.01 to 1.0 dtex and modified cross-section degree (α, α=P/(4πA), where P represents a peripheral length (μm) in a fiber cross section, and A represents an area of the fiber cross section (μm)) of 1.5 to 4.0 at a fiber cross section taken along a direction perpendicular to the fiber axis. 1. A modified cross-section fiber having a single fiber fineness of 0.01 to 1.0 dtex and modified cross-section degree (α) of 1.5 to 4.0 at a fiber cross section taken along a direction perpendicular to a fiber axis , {'br': None, 'i': P', 'A, 'sup': '1/2', 'α=/(4π)\u2003\u2003(1)'}, 'wherein the non-circularity degree is calculated by Equation (1),'}{'sup': '2', 'in the equation, P is a peripheral length (unit: μm) of the fiber cross section, and A is an area of the fiber cross section (unit: μm).'}2. The modified cross-section fiber according to claim 1 , wherein the area (A) of the fiber cross section is 0.5 to 100 μm claim 1 , and the peripheral length (P) in the fiber cross section is 5 to 250 μm.3. The modified cross-section fiber according to claim 1 , wherein the fiber cross section is Y-shaped claim 1 , cross-shaped claim 1 , 6-lobed claim 1 , 8-lobed claim 1 , or pinwheel-shaped.4. The modified cross-section fiber according to claim 1 , which is a polyester fiber claim 1 , a polypropylene fiber claim 1 , a nylon fiber claim 1 , an aramid fiber claim 1 , an acrylic fiber claim 1 , or a rayon fiber.5. The modified cross-section fiber according to having a noise absorption coefficient equal to or higher than 0.40 at a frequency of 400 to 1 claim 1 ,250 Hz claim 1 , wherein the noise absorption coefficient is measured in a noise-absorbing and -insulating performance test (I) claim 1 , the noise-absorbing and -insulating performance test (I) comprising:cutting a fiber (0.81 g) in a length of 40 mm;putting the cut fiber in a cylindrical holder having a diameter of 41.5 mm and a ...

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Номер записи: 96

22-03-2018 дата публикации

METHOD FOR PRODUCING HOLLOW FIBER CARBON MEMBRANE AND SEPARATION MEMBRANE MODULE

Номер: US20180078907A1

Автор: HARA NOBUO, Haraya Kenji, Yoshimune Miki

Принадлежит:

An object of the present invention is to provide a method capable of easily controlling the permeation rate and the selectivity of gas molecules, in a hollow fiber carbon membrane which can be used as a gas separation membrane. The present invention provides a method of producing a hollow fiber carbon membrane, the method including: a preparation step of preparing a precursor made of an organic polymer compound in the form of a hollow fiber; a preheating step of heating the precursor to a temperature of 150° C. to 400° C. in an atmosphere containing an oxygen gas; and a carbonization step of heating the precursor which has been subjected to the preheating step to a temperature of 450° C. to 850° C., thereby carbonizing the precursor; wherein the carbonization step includes heating the precursor in the presence of a hydrocarbon gas which may contain a nitrogen atom and which has from 1 to 8 carbon atoms. This method allows for easily controlling the permeation rate and the selectivity of gas molecules, in the resulting hollow fiber carbon membrane. 1. A method of producing a hollow fiber carbon membrane , the method comprising:a preparation step of preparing a precursor made of an organic polymer compound in the form of a hollow fiber;a preheating step of heating the precursor to a temperature of 150° C. to 400° C. in an atmosphere containing an oxygen gas; anda carbonization step of heating the precursor which has been subjected to the preheating step to a temperature of 450° C. to 850° C., thereby carbonizing the precursor;wherein the carbonization step comprises heating the precursor in the presence of a hydrocarbon gas which may contain a nitrogen atom and which has from 1 to 8 carbon atoms.2. The method of producing a hollow fiber carbon membrane according to claim 1 , wherein the hydrocarbon gas is a hydrocarbon containing a carbon-carbon unsaturated bond.4. The method of producing a hollow fiber carbon membrane according to claim 1 , wherein the method is a ...

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Номер записи: 97

24-03-2016 дата публикации

FIBER-REINFORCED POROUS HOLLOW FIBER MEMBRANE

Номер: US20160082396A1

Автор: KONDO Masataka, Namigata Kazuhiko, SATO Takatoshi

Принадлежит:

A fiber-reinforced porous hollow fiber membrane comprising a hollow fiber membrane and a reinforcing fiber completely or partially embedded in the hollow fiber membrane; wherein the reinforcing fiber is placed in a portion that does not exceed 90%, preferably 80%, of the thickness of the hollow fiber membrane as viewed from an inner or outer peripheral surface of the hollow fiber membrane on a side that is not a side of the porous hollow fiber membrane to come in contact with an object to be treated, and preferably at least 50 volume % of the cross section of the reinforcing fiber is embedded in the hollow fiber membrane. The obtained fiber-reinforced porous hollow fiber membrane has excellent permeability, separation performance, and mechanical properties. 1. A fiber-reinforced porous hollow fiber membrane comprising a hollow fiber membrane and a reinforcing fiber partially embedded in the hollow fiber membrane;wherein the reinforcing fiber is placed in a portion that does not exceed 90% of the thickness of the hollow fiber membrane as viewed from an outer surface of the hollow fiber membrane on a side that is not a side of the porous hollow fiber membrane that is intended to come in contact with an object to be treated.2. (canceled)3. The fiber-reinforced porous hollow fiber membrane according to claim 1 , wherein at least 50 volume % of the cross section of the reinforcing fiber is embedded in the hollow fiber membrane.4. The fiber-reinforced porous hollow fiber membrane according to claim 1 , wherein the hollow fiber membrane has an outer diameter of 0.5 to 1.5 mm. The present invention relates to a fiber-reinforced porous hollow fiber membrane. More particularly, the present invention relates to a fiber-reinforced porous hollow fiber membrane having excellent permeability and separation performance.Porous hollow fiber membranes are used in various fields, such as water purification treatment or waste water treatment by membrane filtration, or dehumidification ...

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Номер записи: 98

14-03-2019 дата публикации

Mechanoluminescent Fiber and Method of Manufacturing the same

Номер: US20190078237A1

Автор: Jeong Soon Moon, LIM Sang Kyoo, SONG Seong Kyu

Принадлежит:

Provided is a method of manufacturing a mechanoluminescent fiber. The method includes the steps of: preparing an elastic fiber having a longitudinal groove on the surface thereof; forming a primer layer including a coupling agent on the elastic fiber; filling the groove of the elastic fiber with a mixture of a stress transfer substance and a stress luminescent substance; and forming a silicon adhesive layer on the elastic fiber of which the groove is filled with the mixture of a stress transfer substance and a stress luminescent substance. The silicon adhesive layer is 3-dimensionally bonded to the elastic fiber and the mixture of a stress transfer substance and a stress luminescent substance. 1. A method of manufacturing a mechanoluminescent fiber , the method comprising the steps of:preparing an elastic fiber having a longitudinal groove on the surface thereof;forming a primer layer including a coupling agent on the elastic fiber;filling the groove of the elastic fiber with a mixture of a stress transfer substance and a stress luminescent substance; andforming a capping layer on the elastic fiber by coating the elastic fiber filled with the mixture a stress transfer substance and a stress luminescent substance with a silicon adhesive.2. The method of claim 1 , wherein the elastic fiber having a longitudinal groove on the surface thereof has a concave polygonal transverse cross-section.3. The method of claim 1 , wherein claim 1 , in the forming of a primer layer including a coupling agent on the elastic fiber having a longitudinal groove on the surface thereof claim 1 , the coupling agent is a silane coupling agent.4. The method of claim 3 , wherein the silane coupling agent is a functional group and includes any one or more of acrylic latex claim 3 , butyl claim 3 , epichlorohydrin claim 3 , fluorocarbon claim 3 , isoprene claim 3 , neoprene claim 3 , nitrile claim 3 , polysulfide claim 3 , SBR claim 3 , hydroxyl terminated silicone claim 3 , and vinyl terminated ...

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Номер записи: 99

12-03-2020 дата публикации

FILTER SYSTEM

Номер: US20200078716A1

Автор: Schmitt Cornelia, Thomas Reinhart, Völker Manfred

Принадлежит: FIDICA GmbH & Co. KG

The filter system having a filter and a filter holder, wherein the filter is connected to an upper and a lower filter cap, wherein on the circumference of the filter caps a cross-sectionally T-shaped fixing aid is respectively mounted, having a laterally projecting transverse web, which are vertically aligned with each other, wherein on an outer side of the housing of the filter holder two filter fixings are mounted with grooves in which the transverse webs can be suspended, is characterized in that four hydraulic ports project laterally from the filter and/or the filter caps, which are vertically aligned with each other, and that the filter holder has four connection connectors, which can be advanced by an upper and a lower closure mechanism against spring force until they engage in an end position in which the connection connectors are tightly connected to the hydraulic connections. 1. A filter system comprising a filter and a filter holder ,wherein the filter is connected to an upper and a lower filter cap,wherein on a circumference of each of the filter caps a cross-sectionally T-shaped fixing aid is mounted, having a laterally projecting transverse web, wherein the transverse webs are vertically aligned with each other,wherein the filter holder comprises a housing and on an outer side of the housing two filter fixings are mounted with grooves in which the transverse webs can be suspended,wherein four hydraulic connections project laterally from the filter and/or the filter caps, the hydraulic connections being vertically aligned with each other, andwherein the filter holder has four connection connectors which can be advanced against a spring force by upper and lower closure mechanisms until they engage in an end position in which the connection connectors are tightly connected to the hydraulic connections.2. Filter system according to claim 1 , wherein the connection connectors in the end position engage around the connections claim 1 , such that flow cross- ...

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Номер записи: 100