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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 30115. Отображено 100.

05-01-2012 дата публикации

Spin pack assembly

Номер: US20120001362A1

Автор: James E. Bryson, Jr., Ravi R. Vedula

Принадлежит: Lubrizol Advanced Materials Inc

A spin pack assembly for use in melt spinning elastic fibers. The spin pack assembly includes a circular breaker plate having a center aperture and several circular patterns of apertures with each circular pattern having a plurality of apertures. Each circular pattern is located concentrically about an axis of the center aperture. The apertures in the outer circular patterns have a greater diameter than the apertures in the inner circular patterns. The spin pack assembly also has a spinneret plate where the exit aperture of the spinneret plate is recessed in the body of the spin pack assembly.

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Номер записи: 1

05-01-2012 дата публикации

Roller Type Electrostatic Spinning Apparatus

Номер: US20120003344A1

Автор: Haw-Jer Chang, Jen-Hsiung Lee, Tzu-Hsiang Huang, Yu-Chun Tang

Принадлежит: TAIWAN TEXTILE RESEARCH INSTITUTE

A roller type electrostatic spinning apparatus is disclosed, which includes an electrostatic spinning solution impregnation mechanism having a tank for containing an electrostatic spinning solution and a sizing roller rolled in the tank, a chain emitting electrode touching the sizing roller to coat the electrostatic spinning solution onto the chain emitting electrode, a collecting electrode, and a high-voltage power supply connected to the chain emitting electrode and the collecting electrodes respectively.

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Номер записи: 2

03-05-2017 дата публикации

Устройство для управления процессом охлаждения, вытяжки и формирования изотропного волокнистого холста из расплава

Номер: RU0000170675U1

Автор: Анатолий Евгеньевич Поляков, Екатерина Михайловна Филимонова, Ирина Сергеевна Ямских, Полина Михайловна Мухина

Принадлежит: федеральное государственное бюджетное образовательное учреждение высшего образования "Российский государственный университет им. А.Н. Косыгина (Технологии. Дизайн. Искусство)", RU.

Устройство для управления процессом охлаждения, вытяжки и формирования изотропного волокнистого холста из расплава.Полезная модель относится к области производства синтетических волокон и нетканых материалов, в частности к процессу формирования, транспортирования и наматывания волокнистого продукта, и может быть использовано в других областях промышленности, где находят применение транспортирующие и наматывающие механизмы.Технический результат - получение холста более высокой равномерности за счет увеличения коэффициента концентрации волокон в воздушном потоке при совершенствовании системы управления электротехническим комплексом аэродинамической установки.Спроектирован многодвигательный управляемый комплекс управления аэродинамическим устройством агрегата производства нетканых материалов, состоящий из четырех групп автоматизированных электроприводов: электропривода вентилятора нагнетания воздуха первой секции холодильной камеры аэродинамической установки; электропривода вентилятора нагнетания воздуха второй секции холодильной камеры аэродинамической установки; электропривода вентилятора разрежения воздуха; электропривода сетчатого транспортера.МикроЭВМ выполнена с возможностью реализации функции синхронизации управления асинхронными электроприводами для стабилизации и оптимизации скоростных режимов управляемого электротехнического комплекса аэродинамической установки с целью обеспечения режимных показателей охлаждения, вытяжки и формирования изотропного волокнистого холста из расплава. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 170 675 U1 (51) МПК D01D 5/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016127456, 07.07.2016 (24) Дата начала отсчета срока действия патента: 07.07.2016 03.05.2017 Приоритет(ы): (22) Дата подачи заявки: 07.07.2016 Адрес для переписки: 119071, Москва, М. Калужская, 1, ФГБОУ ВО "РГУ им. А.Н. Косыгина", ОНИР сектор патентно-лицензионной работы. (56) ...

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Номер записи: 3

19-01-2012 дата публикации

Electrospinning manufacture for drug carriers

Номер: US20120013046A1

Автор: Chih-Hui Yang, Keng-Shiang Huang, Yung-Sheng Lin

Принадлежит: I-SHOU UNIVERSITY

An electrospinning manufacture for drug carriers is disclosed. The method comprises a preliminary step mixing a predetermined drug, an alginate, and a saline to obtain a mixture; an electric field establishing step providing a collection plate and an emitter filled with divalent cation agent and the mixture individually, wherein an electric field is applied to the collection plate and the emitter to form a voltage therebetween; and an electrospinning step sequentially dropping the mixture from the emitter into the divalent cation agent filled in the collection plate via the driving of the electric field, triggering a crosslinking-gelating reaction between the divalent cation and the alginate, wherein a plurality of gel particles is produced for a coating of the predetermined drug presenting a drug carrier performance.

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Номер записи: 4

08-03-2012 дата публикации

Apparatus, systems and methods for producing particles using rotating capillaries

Номер: US20120056342A1

Автор: Evan E. Koslow

Принадлежит: GABAE TECHNOLOGIES LLC

An apparatus for forming particles from a liquid, including a rotor assembly having at least one surface sized and shaped so as to define at least one capillary. Each capillary has an inner region adjacent an axis of rotation of the rotor assembly, an outer region distal from the axis of rotation, and an edge adjacent the outer region. The rotor assembly is configured to be rotated at an angular velocity selected such that when the liquid is received in the inner region of the at least one capillary, the liquid will move from the inner region to the outer region, adopt an unsaturated condition on the at least one surface such that the liquid flows as a film along the at least one surface and does not continuously span the capillary, and, upon reaching the edge, separates from the at least one surface to form at least one particle.

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Номер записи: 5

19-04-2012 дата публикации

Method for manufacturing fine polymer, and fine polymer manufacturing apparatus

Номер: US20120091606A1

Автор: Hiroto Sumida, Kazunori Ishikawa, Mikio Takezawa, Mitsuhiro Takahashi, Takahiro Kurokawa, Yoshiaki Tominaga

Принадлежит: Individual

A method for manufacturing a fine polymer including: generating superheated steam by a superheated steam generating unit ( 101 ); adjusting the pressure of the generated superheated steam by a pressure adjusting unit ( 102 ); receiving a polymer by a reception unit ( 103 ); heating the received polymer to a predetermined temperature by a heating unit ( 104 ); discharging the heated polymer through a first discharge port ( 111 ); and discharging the superheated steam through a second discharge port ( 121 ) at the same time as the time when the heated polymer is discharged. Here, the second discharge port ( 121 ) surrounds the first discharge port ( 111 ), and the first discharge port ( 111 ) and the second discharge port ( 121 ) face the same direction.

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Номер записи: 6

26-04-2012 дата публикации

Filtration materials using fiber blends that contain strategically shaped fibers and/or charge control agents

Номер: US20120097035A1

Автор: Rick L. Chapman

Принадлежит: Individual

A filtration material comprising a blend of polypropylene and acrylic fibers of round, flat, dog bone, oval or kidney bean shape in any size from 0.08 to 3.3 Dtex. A preferred blend contains about 50 weight percent polypropylene fibers and about 50 weight percent acrylic fibers. The fibers can be blended ranging from 90:10 to 10:90 polypropylene to acrylic. The shape contains 25 weight percent round, flat, oval, dog bone and kidney bean shapes. The fiber blend contains 25 weight percent of at least one size between 0.08 and 3.3 Dtex. Electret fibers incorporated within these blends have 0.02 to 33 weight percent of a charge control agent. These fibers can be used in producing electret material by corona or triboelectric charging methods.

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Номер записи: 7

10-05-2012 дата публикации

Manufacturing apparatus for nonwoven fabric

Номер: US20120114779A1

Автор: Hiroshi Koyama, Mai OYAMADA

Принадлежит: Toyota Boshoku Corp

A nonwoven fabric manufacturing apparatus has a spinning portion that spins fiber and an air delivery portion that blows air toward fiber spun out of the spinning portion. A roller is provided below the spinning portion. Fiber spun out of the spinning portion is blown onto the circumferential surface of the roller by the air blown out of the air delivery portion, so that nonwoven fabric is formed on the roller. A pair of guide plates is located below the roller. Entrained air flow is generated when the air blown out of the air delivery portion flows along the circumferential surface of the roller. Each guide plate interrupts and separates the entrained air flow from the circumferential surface of the roller.

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Номер записи: 8

07-06-2012 дата публикации

Nanofibre membrane layer for water and air filtration

Номер: US20120137885A1

Автор: Arnaud David Henri Chiche, Konraad Albert Louise Hector Dullaert, Marko Dorschu

Принадлежит: DSM IP ASSETS BV

The invention relates to a nanofibre membrane layer having a basis weight of 0.01-50 g/m2 and a porosity of 60-95%, comprising a nanoweb made of polymeric nanofibres with a number average diameter in the range of 50-600 nm, consisting of a polymer composition comprising a semicrystalline polyamide having a C/N ratio of at most 5.5. The invention also relates to water and air filtration devices comprising such a nanofibre membrane layer.

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Номер записи: 9

07-06-2012 дата публикации

Polyolefin member and method of manufacturing

Номер: US20120142834A1

Автор: Gijsbertus Hendrikus Maria Calis, Hendrik Derk Hoving

Принадлежит: DSM IP ASSETS BV

The invention concerns an improved process for producing high performance polyolefin member. The process comprises the steps of preparing a solution comprising a polyolefin and a solvent, extruding or spinning the solution into an air gap to form a fluid member, cooling the fluid member to form a solvent-containing gel member, and removing at least partly the solvent from the gel member to form a solid member before, during and/or after drawing the member. Furthermore, the process involves the presence of an antifoaming agent comprising an aryl sulphonic acid or an alkyl naphtyl sulphonic acid. The invention further concerns the geltruded polyolefin member comprising aryl sulphonic acid or alkyl naphtyl sulphonic acid.

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Номер записи: 10

05-07-2012 дата публикации

Electrospun silk material systems for wound healing

Номер: US20120171256A1

Автор: David L. Kaplan, Scott E. Wharram, Stephen McCarthy, Xiaohui Zhang

Принадлежит: TUFTS UNIVERSITY, University of Massachusetts Foundation Inc

The present invention relates to the processes of preparing silkfibroin/polyethylene oxide blended materials, and the resulting materials thereof, which are suitable for biomedical applications such as wound healing. In particular, the electrospun silk fibroin/PEO mats with a silk:PEO blend ratio of 2:1 to 4:1, treated with controlled evaporation, constraint-drying techniques, and/or alcohol treatment, and/or PEO extraction, demonstrate suitable physical and biofunctional properties, such as fiber structure, topography, absorption, water vapor transmission rates, oxygen permeation, and biodegradability, relevant to biomaterial systems with utility for wound dressings.

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Номер записи: 11

19-07-2012 дата публикации

Producing spinnable and dyeable polyester fibers

Номер: US20120180232A1

Автор: Klaus Scheuermann, Pia Baum

Принадлежит: BASF SE

The present invention relates to a process for producing dyed polyester fibers (C) from a terephthalate polyester (A), at least one polyester-containing additive (B) and optionally at least one component (G). The polyester-containing additive is obtainable by condensation of the monomers of an aliphatic 1,ω-diol, of an aliphatic 1,ω-dicarboxylic acid and of an aromatic 1,ω-dicarboxylic acid. Optionally, chain extenders (V) are also used in the production of the polyester-containing additive (B). For fiber production, the components (A), (B) and optionally (G) are mixed, melted in an extruder and extruded through spinneret dies. These polyester fibers (C) are preferably used in the production of dyed textile fabrics (F).

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Номер записи: 12

19-07-2012 дата публикации

Rotary spinning electrode

Номер: US20120183638A1

Автор: Frantisek Syba, Miroslav Maly

Принадлежит: Elmarco sro

The rotary spinning electrode of elongated shape, serving to carry polymer solution from reservoir of polymer solution or melt into electric field for spinning in devices for production of nanofibres through electrostatic spinning of polymer solutions or melts, including a pair of end faces ( 2, 3 ), which are arranged on the carrying mean ( 1 ), and between which are mounted the spinning members ( 41, 42, 43, 44, 45, 46 ), which are formed of a cord or wire ( 4 ). The spinning members ( 41, 42, 43, 44, 45, 46 ) are in a skew position to an axis ( 11 ) of rotation of the rotary spinning electrode.

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Номер записи: 13

16-08-2012 дата публикации

Fine fiber media layer

Номер: US20120204527A1

Автор: Douglas G. Crofoot, Hoo Y. Chung, John R.B. Hall, Mark A. Gogins, Thomas M. Weik

Принадлежит: Donaldson Co Inc

Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials.

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Номер записи: 14

13-09-2012 дата публикации

Fiber, fiber aggregate and adhesive having the same

Номер: US20120231260A1

Автор: Deok Hoon Kim, Jae Ok KIM, Kyoung Lim SUK, Kyung Wook Paik

Принадлежит: Korea Advanced Institute of Science and Technology KAIST, Micropack Co Ltd, Optopac Co Ltd

Provided is a functional fiber and a fiber aggregate for realizing various functions, an adhesive for easily bonding electronic components, and a method for manufacturing the same. Particularly, a fiber extended in a length direction includes a carrier polymer and a plurality of functional particles, wherein the plurality of functional particles are embedded in the carrier polymer and physically fixed to the carrier polymer to be integrated.

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Номер записи: 15

13-09-2012 дата публикации

Fiber, fiber aggregate and adhesive having the same

Номер: US20120231689A1

Автор: Deok Hoon Kim, Jae Ok KIM, Kyoung Lim SUK, Kyung Wook Paik

Принадлежит: Korea Advanced Institute of Science and Technology KAIST, Micropack Co Ltd, Optopac Co Ltd

Provided is a functional fiber and a fiber aggregate for realizing various functions, an adhesive for easily bonding electronic components, and a method for manufacturing the same. Particularly, a fiber extended in a length direction includes a carrier polymer and a plurality of functional particles, wherein the plurality of functional particles are embedded in the carrier polymer and physically fixed to the carrier polymer to be integrated.

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Номер записи: 16

27-09-2012 дата публикации

Method and apparatus to produce micro and/or nanofiber webs from polymers, uses thereof and coating method

Номер: US20120240369A1

Автор: Eliton Souto De Medeiros, Luiz Henrique Capparelli Mattoso

Принадлежит: Empresa Brasileira de Pesquisa Agropecuaria EMBRAPA

The present invention refers to an apparatus and method for producing non-woven nanofibers from polymers. The method for producing non-woven micro nanofibers from polymers comprises the use of electrospinning and melt blowing elements. The apparatus presented for producing non-woven micro and/or nanofibers from polymers comprises a source of compressed gas, a pressure gauge, a hypodermic syringe with a pump for controlling the injection rate of the polymeric solutions, a pulverizing apparatus and a collector preferably with controlled rotation speed. The technology presented for producing non-woven micro and/or nanofibers is capable of producing micro and nanofibers having diameters similar to those produced by electrospinning, also on an industrial scale. The invention also comprises the use of non-woven nanofibers in pulverizing live tissues and as coating for materials.

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Номер записи: 17

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: 18

22-11-2012 дата публикации

Multilayer apparatuses and methods for the production of microfibers and nanofibers

Номер: US20120294966A1

Автор: Ed Peno, Roger Lipton, Stephen Kay

Принадлежит: Fiberio Technology Corp

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. Embodiments described herein relate to multilayer fiber producing devices.

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Номер записи: 19

03-01-2013 дата публикации

Polyetherimide resins with very low levels of residual contamination

Номер: US20130003227A1

Автор: Aaron ROYER, Daniel Francis Lowery, Jamuna Chakravarti

Принадлежит: SABIC INNOVATIVE PLASTICS IP BV

Compositions and methods for producing compositions comprising a monoamine-endcapped polyimide component. Based on a gas chromatography mass spectroscopy analysis of a surface rinse of the composition performed at room temperature, the composition can have at least one surface with less than or equal to 5 ppb releasable phosphorous residuals, and less than or equal to 5 ppb releasable volatile organic compound residuals. The composition can also comprise less than or equal to 10 ppb combined releasable residuals. Because of the very low levels of residual contamination, the compositions can be used to produce a variety of articles, including a disk drive.

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Номер записи: 20

03-01-2013 дата публикации

Method for providing a substrate with a barrier and a substrate comprising a barrier

Номер: US20130004748A1

Автор: Isto Heiskanen, Kaj Backfolk

Принадлежит: STORA ENSO OYJ

The invention relates to a method for providing a surface of a fiber based substrate with a barrier layer wherein the barrier layer is formed by depositing nanofibers on the surface by the use of electrospinning or meltspinning and wherein the film is formed by post treatment of the substrate. The invention further relates to a substrate comprising such a carrier layer.

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Номер записи: 21

10-01-2013 дата публикации

Apparatus for producing metal oxide nanofibers and method for producing metal oxide nanofibers

Номер: US20130011318A1

Автор: Makoto Takahashi, Masaya Nakatani

Принадлежит: Panasonic Corp

An apparatus for producing metal oxide nanofibers includes a jetting unit, a mixing unit, a heating unit, and a cooling unit. The jetting unit jets particles made of a metal. The mixing unit prepares a mixture by mixing the metal particles and a gas containing an oxidizing component that includes oxygen in molecules of the component. The heating unit heats the mixture to raise the temperature of the mixture up to a temperature at which the metal evaporates. The cooling unit cools the product thus-produced in the heating unit.

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Номер записи: 22

10-01-2013 дата публикации

Meta-type wholly aromatic polyamide fiber

Номер: US20130012629A1

Автор: Kotarou Takiue, Tomoyoshi Chiba

Принадлежит: Teijin Techno Products Ltd

There is provided a novel meta-type wholly aromatic polyamide fiber which has a high breaking strength and can inhibit coloration or discoloration under high temperatures, while retaining latent properties of the meta-type wholly aromatic polyamide fiber, such as heat resistance and flame retardancy. Components or conditions of a coagulation bath are appropriately controlled so as to give a dense coagulation state having no skin-core structure, plastic stretching is performed within a specific ratio, and further, subsequent heat stretching conditions are made proper, thereby obtaining a meta-type wholly aromatic polyamide fiber containing substantially no layered clay mineral, in which the amount of solvent remaining in the fiber is 1.0% by mass or less based on the whole fiber, and the breaking strength of the fiber is from 4.5 to 6.0 cN/dtex.

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Номер записи: 23

07-02-2013 дата публикации

Fibers containing ferrates and methods

Номер: US20130034594A1

Автор: Ada Cowan, Bruce F. Monzyk, Robert D. Giammar

Принадлежит: Battelle Memorial Institute Inc

A fiber containing ferrate, which comprises (1) one or more ferrate compounds, wherein the ferrate compound is selected from a group consisting of a metal ferrate(V) compound, metal ferrate(VI) compound, and a mixture thereof; and (2) one or more nonaqueous polymers. Also, methods are disclosed that make and/or use the fibers.

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Номер записи: 24

07-02-2013 дата публикации

Poly-trimethylene terephthalate solid core fibrillation-resistant filament having a substantially triangular cross section, a spinneret for producing the filament, and a carpet made therefrom

Номер: US20130034658A1

Автор: Harry Vaughn Samuelson, Jing-Chung Chang, Kalika Ranjan Samant

Принадлежит: EI Du Pont de Nemours and Co

In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance “a” from the axis of the filament. Each rounded tip has a radius substantially equal to a length “b”. Each tip lies on a circumscribed circle having a radius substantially equal to a length (a+b) and the midpoint of each side lies on an inscribed circle having a radius substantially equal to a length “c”. The filament has a denier-per-filament in the range 10<“dpf”<35; the distance “a” lies in the range 0.00025 inches (6 micrometers)<“a”<0.004 inches (102 micrometers); the distance “b” lies in the range from 0.00008 inches (2 micrometers)<“b”<0.001 inches (24 micrometers); the distance “c” lies in the range from 0.0003 inches (8 micrometers)<“c”<0.0025 inches (64 micrometers); and the modification ratio (“MR”) lies in the range from about 1.1<“MR”<about 2.0. In still another aspect the present invention is directed to a spinneret plate having a plurality of orifices formed therein for forming the solid core fibrillation-resistant, synthetic polymeric filament. Each orifice has a center and three sides with each side terminating in a first and a second end point and with a midpoint therebetween. The sides can be either concave or linear connected by either a circular or a linear end contour.

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Номер записи: 25

14-02-2013 дата публикации

Method for coating devices using electrospinng and melt blowing

Номер: US20130041442A1

Автор: Devon N. Arnholt, Douglals D. Pagoria, Jeannette C. Polkinghorne

Принадлежит: Cardiac Pacemakers Inc

A medical electrical lead may include an insulative lead body, a conductor disposed within the insulative lead body, an electrode disposed on the insulative lead body and in electrical contact with the conductor and a fibrous matrix disposed at least partially over the electrode. The fibrous matrix may be formed from a non-conductive polymer.

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Номер записи: 26

04-04-2013 дата публикации

ANTIBACTERIAL NANOFIBER

Номер: US20130082424A1

Автор: Iizuka Mami, Imashiro Yasuo, Ogushi Yukiko, Sasaki Naokazu

Принадлежит: NISSHINBO INDUSTRIES, INC.

Disclosed is an antibacterial nanofiber which comprises a polymer having an electron-withdrawing group and/or an electron-withdrawing atomic group and has an average fiber diameter of not less than 1 nm and less than 1000 nm, wherein the ratio of the binding energy of the minimum unit of the polymer at 25° C. to the binding energy of the electron-withdrawing group and/or the electron-withdrawing atomic group contained in the minimum unit of the polymer at 25° C. is 0.13 or greater. The nanofiber has an antibacterial activity by itself, and therefore can exhibit an antibacterial activity without the need of adding any antibacterial agent. 1. A method of imparting an antibacterial activity to a nanofiber , comprising:spinning a polymer possessing electron-withdrawing groups and/or electron-withdrawing atomic groups, wherein the polymer has a ratio of the bond energy at 25° C. of electron-withdrawing groups and/or electron-withdrawing atomic groups present in a smallest unit of the polymer to the bond energy at 25° C. of the smallest unit of the polymer of at least 0.13, andobtaining a nanofiber having an average fiber diameter of at least 1 nm but less than 1,000 nm,said nanofiber itself exhibiting an antibacterial activity.2. The method of wherein claim 1 , in surface functional group measurement using an acid-base titration method claim 1 , the ratio of functional groups in a specific weight of the nanofiber to functional groups in a film of the same weight that is formed of the polymer is at least 1.3.3. The method of or wherein the nanofiber is composed solely of the polymer having electron-withdrawing groups and/or electron-withdrawing atomic groups.4. The method of claim 1 , wherein the polymer is a polyester resin claim 1 , a polyamide resin claim 1 , a polyurethane resin claim 1 , a polyacrylonitrile resin claim 1 , a polyamideimide resin claim 1 , a polyvinyl chloride resin or a polystyrene resin.5. The method of claim 4 , wherein the polymer is a water- ...

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Номер записи: 27

04-04-2013 дата публикации

Polyimide porous web, method for manufacturing the same, and electrolyte membrane comprising the same

Номер: US20130084515A1

Автор: Heung Ryul Oh, Yun Kyung Kang

Принадлежит: Kolon Fashion Material Inc

Disclosed is a polyimide porous web with good porosity, good dimensional stability, and uniform pore; a method for manufacturing the same; and an electrolyte membrane with improved ion conductivity and good dimensional stability owing to ion conductors uniformly impregnated in the porous web, the polyimide porous web having a porosity of 60% to 90%, wherein not less than 80% of entire pores of the porous web have a pore diameter which differs from an average pore diameter of the porous web by not more than 1.5 μm.

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Номер записи: 28

25-04-2013 дата публикации

Whey Protein Isolate Hydrogels and Their Uses

Номер: US20130101548A1

Автор: James E. Henry, Mia Dvora

Принадлежит: Louisiana State University and Agricultural and Mechanical College

A biodegradable hydrogel has been made based on high concentrations of whey protein isolate (WP1). WP1 gels of different compositions were fabricated by thermally inducing gelation of high-concentration suspensions of protein, and characterized for compressive strength and modulus, hydration swelling and drying properties, mechanical behavior change due to polysaccharide additives, and intrinsic pore network structure. The gels were shown to be compatible with bone cells and could be used as bone tissue scaffolds. In addition, WP1 fibers were produced by electrospinning. Several additives could be incorporated into the WPI gels, including structural additives, growth factors, amino acids, etc. The WP1 hydrogels can be made with glycerol to increase flexibility and stability. The hydrogels could be used for tissue regeneration, food protection, controlled-release applications (including drug encapsulation, dietary supplement release, attractant release in lures, nutrient release to plants (fertilizers), column packing for compound separation, and membrane development.

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Номер записи: 29

09-05-2013 дата публикации

ELECTROSPUN DOPED NANOFIBERS AND PROCESS OF PREPARATION THEREOF

Номер: US20130115456A1

Автор: Sui Xiaomeng, Wagner Daniel H., Wiesel Erica

Принадлежит:

This invention is directed to nanofibers doped with an alkali salt having improved tensile properties, and process of preparation thereof. 1. A nanofiber comprising a polymer doped with alkali salt , wherein said nanofiber has improved mechanical properties.2. The nanofiber of claim 1 , wherein said polymer is polymethyl methacrylate (PMMA) claim 1 , polyvinyl alcohol claim 1 , polyethylene oxide claim 1 , polyurethane claim 1 , a polyamide claim 1 , poly(vinyl chloride) or any combination thereof.3. The nanofiber of claim 1 , wherein said alkali salt is sodium chloride (NaCl).4. The nanofiber of claim 1 , wherein said polymer is polymethyl methacrylate (PMMA) and said salt is NaCl.5. The nanofiber of claim 1 , wherein said alkali salt is between about 0.2-0.4% weight percentage from said polymer.6. The nanofiber of claim 1 , wherein said mechanical properties are stiffness claim 1 , strength claim 1 , toughness or any combination thereof.7. The nanofiber of claim 5 , wherein said strength is improved by between about 75-100%.8. The nanofiber of claim 1 , wherein the diameter of said nanofiber is between 200 nm to 1 micron9. A process for the preparation of an electrospun nanofiber having improved mechanical properties comprising: (a) preparing a solution or a melt of an alkali salt and a polymer; (b) adding said solution or melt to an electrospinning system; (c) applying an electric field to yield liquid jets which are collected as fibers by a grounded collecting plate.10. The process of claim 9 , wherein said polymer is polymethyl methacrylate (PMMA) claim 9 , polyvinyl alcohol claim 9 , polyethylene oxide claim 9 , polyurethane claim 9 , a polyamide claim 9 , poly(vinyl chloride) or any combination thereof.11. The process of claim 9 , wherein said alkali salt is sodium chloride (NaCl).12. The process of claim 9 , wherein said polymer is polymethyl methacrylate (PMMA) and said salt is NaCl.13. The process of claim 9 , wherein said alkali salt is in between about 0 ...

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Номер записи: 30

09-05-2013 дата публикации

Polypeptide electrospun nanofibrils of defined composition

Номер: US20130115457A1

Автор: Donald T. Haynie, Lei Zhai

Принадлежит: University of Central Florida Research Foundation Inc UCFRF, UNIVERSITY OF SOUTH FLORIDA

Electrospun nanofibrils and methods of preparing the same are provided. The electrospun nanofibrils comprise at least one polypeptide. A polypeptide can be dissolved in a solution, and the solution can be electrospun into a nanofibril. The solution can be added to a syringe or syringe pump, and an electric field can be applied to electrospin the at least one polypeptide.

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Номер записи: 31

16-05-2013 дата публикации

Non-woven fiber fabric, and production method and production device therefor

Номер: US20130122771A1

Автор: Akio Matsubara, Kenichi Nakamura

Принадлежит: Mitsui Chemicals Inc

The present invention provides a method for producing a non-woven fiber fabric by spinning a molten polymer. Thus, a non-woven fiber fabric which is substantially free from a solvent, different from the case of spinning a polymer solution, but yet has an extremely small fiber size (diameter of 0.5 μm or less) is provided. The non-woven fiber fabric comprises an olefin-based thermoplastic resin fiber, said fiber having an average fiber size of 0.01-0.5 μm, and said non-woven fiber fabric having an average pore size of 0.01-10.0 μm and being free from a solvent component.

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Номер записи: 32

30-05-2013 дата публикации

Nonwoven Fabrics Made From Polymer Blends And Methods For Making Same

Номер: US20130137331A1

Автор: Galen C. Richeson

Принадлежит: ExxonMobil Chemical Patents Inc

The present invention is directed to polymer blends for use in nonwoven fabric applications, and to fabrics formed from the polymer blends. In one or more embodiments, the polymer blends comprise from about 70 to about 99.9 wt %, based on the total weight of the composition, of a first propylene-based polymer and from about 0.1 to about 30 wt % of a second propylene-based polymer. The first polymer has a melt flow rate of from about 100 to about 5,000 g/10 min, and the second polymer has a melt flow rate of from about 1 to about 500 g/min, and the second polymer has either a lower melt flow rate or a higher triad tacticity than the first polymer.

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Номер записи: 33

06-06-2013 дата публикации

Crosslinked cellulosic polymers

Номер: US20130142763A1

Автор: Gregory D. Phelan, Philip A. Sullivan, William B. Carlson

Принадлежит: EMPIRE TECHNOLOGY DEVELOPMENT LLC

Crosslinked cellulosic polymers, crosslinked cellulosic polymer hydro-gels, and methods for their synthesis and use are described. The crosslinked cellulosic polymers include one or more cellulosic polymers and a one or more crosslinkers that crosslinks the one or more cellulosic polymers together. The crosslinking can be facilitated with a crosslinking agent capable of linking with a monomer the cellulosic polymer and crosslinking the cellulosic polymer intermoleculerly and/or intramolecularly. Crosslinked cellulosic polymers are well adapted for use in cell and tissue growth in vivo and in vitro. The crosslinked cellulose polymers may also be used as wound care devices.

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Номер записи: 34

04-07-2013 дата публикации

Stimuli Responsive Nanofibers

Номер: US20130171331A1

Автор: Jie Wen, Patrick Guire, Tahmina Naqvi

Принадлежит: Individual

A stimuli responsive nanofiber that includes a stimuli responsive polymer, such as a thermally responsive polymer, and a cross-linking agent having at least two latent reactive activatable groups. The nanofiber may also include a biologically active material or a functional polymer. The stimuli responsive nanofiber can be used to modify the surface of a substrate. When the nanofiber includes a thermally responsive polymer, the physical properties of the surface can be controlled by controlling the temperature of the system, thus controlling the ability of the surface to bind to a biologically active material of interest.

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Номер записи: 35

25-07-2013 дата публикации

PROCESS AND APPARATUS FOR SPINNING FIBRES AND IN PARTICULAR FOR PRODUCING A FIBROUS-CONTAINING NONWOVEN

Номер: US20130189892A1

Автор: Boscolo Galliano

Принадлежит: BOMA ENGINEERING SRL

The apparatus () is used for producing melt-blown fibres (MF). It comprises a die head () with several spinning orifices, means () for extruding at least one melted polymeric material through the spinning orifices of the die head () in the form of meltblown filaments (f), and means () for blowing a hot primary gas flow (F) towards the outlet of the die head () in order to draw and attenuate the polymeric filaments (f) at the outlet of the die head, and a drawing unit () that is positioned below the die head (), and that is adapted to create an additional gas flow (F) that is oriented downstream to further draw and attenuate the meltblown filaments (f). 186-. (canceled)87. An apparatus comprising a die head with several spinning orifices , means for extruding at least one melted polymeric material through the spinning orifices of the die head in the form of filaments , and a drawing unit positioned below the die head , and adapted to create a gas flow that is oriented downstream for drawing and attenuating the filaments.88. The apparatus of claim 87 , wherein the drawing unit is adapted to break the filaments into discontinuous fibres.89. The apparatus of claim 88 , wherein the drawing unit is adapted to break the filaments into discontinuous fibres having an average length higher than 20 mm claim 88 , preferably higher than 40 mm.90. The apparatus of claim 88 , wherein the drawing unit is adapted to break the filaments into discontinuous fibres having an average length of not more than 250 mm claim 88 , and preferably of not more than 150 mm.91. The apparatus of claim 87 , wherein the drawing unit comprises a channel that is positioned below the die head claim 87 , in such a way that the filaments delivered by the die head can pass through the channel claim 87 , and air blowing means adapted to blow the gas flow inside the channel.92. The apparatus of claim 91 , wherein the drawing unit is adapted to create above the drawing unit a sucked air flow that enters into ...

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Номер записи: 36

01-08-2013 дата публикации

POROUS FIBER, METHODS OF MAKING THE SAME AND USES THEREOF

Номер: US20130196405A1

Автор: Agarwal Shuchi, Elayaperumal Nandhini, Nadappuram Binoy Paulose, Singh Gurdev

Принадлежит: Ngee Ann Polytechnic

There is provided a porous fiber having a core-shell configuration, wherein the pores on the fiber are configured to encapsulate and thereby retain a biological material therein. 133-. (canceled)34. A porous fiber having a core-shell configuration , said fiber comprising a non-biodegradable polymer , wherein the pores on the fiber are configured to encapsulate and thereby retain a biological material therein.35. The porous fiber of claim 34 , wherein the fiber has a generally longitudinal shape.36. The porous fiber of claim 34 , wherein said biological material is dispersed throughout the length of the longitudinal fiber.37. The porous fiber of claim 34 , wherein the porosity of the fibers is in the range of 5% to 90%.38. The porous fiber of claim 34 , wherein the pores of said fiber have a pore size in the range of 1 nm to 1000 nm.39. The porous fiber of claim 34 , wherein said biological material is selected from the group consisting of bacteria claim 34 , viruses claim 34 , algae claim 34 , fungi claim 34 , cells and yeast.40. The porous fiber of claim 34 , wherein said biological material is selected from the group consisting of enzymes claim 34 , proteins and nucleic acids.41. The porous fiber of claim 40 , wherein said biological material is immobilized on a solid substrate.42. The porous fiber of claim 34 , wherein said fiber is an electrospun fiber.43. The porous fiber of claim 34 , wherein the non-biodegradable polymer is polyvinylidene fluoride.44. The porous fiber of claim 34 , wherein the polymer has a tensile strength of at least 20 MPa.45. The porous fiber of claim 34 , wherein the polymer has a tensile strength of at least 50 MPa.46. The porous fiber of claim 34 , wherein the polymer has a tensile modulus of at least 400 MPa.47. The porous fiber of claim 34 , wherein the polymer has a tensile modulus of at least 1700 MPa.48. The porous fiber of claim 34 , wherein said biological material is a particle having a particle size in the nano-sized range or ...

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Номер записи: 37

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: 38

08-08-2013 дата публикации

Albumin fibers and fabrics and methods of generating and using same

Номер: US20130202669A1

Автор: Abraham Katzir, David Simhon, Eyal Zussman, Shmuel Chervinsky, Yael Dror, Zvi Nevo

Принадлежит: Technion Research and Development Foundation Ltd

Provided are method of generating a fiber from a globular protein such as albumin. Also provided are albumin fibers and fabrics and methods of using same for bonding a damaged tissue or for ex vivo or in vivo formation of a tissue.

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Номер записи: 39

08-08-2013 дата публикации

SYNTHETIC FIBER CONTAINING PLANT FATTY ACIDS AND METHOD FOR MANUFACTURING SAME

Номер: US20130203919A1

Автор: Myiang-Ho Seok, You In-Sik

Принадлежит:

Disclosed are a synthetic fiber comprising a plant fatty acid and a method for manufacturing the same. The method comprises incorporating a plant fatty acid in an amount of from 0.1 to 10.0 wt % into a fiber-formable polymer; and melt-spinning the plant fatty acid-incorporated polymer. The synthetic fiber comprises a plant fatty acid in an amount of from 0.01 to 1.0.0 wt %, and emanates a plant fragrance. In addition to being superior to general synthetic fibers in physical properties including strength and elongation, the synthetic fiber exhibits excellent bulkiness, elasticity, whiteness, touch sensation, hygroscopicity, dyeability, and gloss. Further, the fiber is highly antistatic and gives off a plant fragrance, so that it is useful as a material for high-quality clothes. 1. A method for manufacturing a synthetic fiber , comprising:incorporating a plant fatty acid in an amount of from 0.1 to 10.0 wt % into a fiber-formable polymer; andmelt-spinning the plant fatty acid-incorporated polymer.2. The method of claim 1 , wherein the incorporating is carried out by coating the fiber-formable polymer with the plant fatty acid in advance of the melt-spinning.3. The method of claim 1 , wherein the incorporating is carried out by mixing the plant fatty acid with the fiber-formable polymer to afford a master batch chip.4. The method of claim 1 , wherein the incorporating is carried out by adding the plant fatty acid to the fiber-formable polymer upon polymerization of the fiber-formable polymer.5. The method of claim 1 , wherein the incorporating is carried claim 1 , out by continuously supplying the plant fatty acid into an extruder upon the melt spinning claim 1 , using a separate supplier.6. The method of claim 1 , wherein the fiber-formable polymer is a material capable of being melt spun.7. The method of claim 1 , wherein the plant fatty acid is selected from the group consisting of linoleic acid claim 1 , oleic acid claim 1 , stearic acid claim 1 , palmitic acid ...

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Номер записи: 40

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: 41

22-08-2013 дата публикации

Melt blown media for air filtration

Номер: US20130212993A1

Автор: Antti Tynys, Joachim Fiebig

Принадлежит: Borealis AG

Melt-blown fiber (MBF) comprising a propylene copolymer (PP), wherein the melt-blown fiber (MBF) and/or the propylene copolymer (PP) has/have (a) a melt flow rate MFR 2 (230° C.) measured according to ISO 1133 of at least 300 g/10 min, (b) a comonomer content of 1.5 to 6.0 wt.-%, the comonomers are ethylene and/or at least one C 4 to C 12 α-olefin, (c) <2,1> regiodefects of more than 0.4 mol.-% determined by 13 C-NMR spectroscopy.

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Номер записи: 42

22-08-2013 дата публикации

HEAT INSULATION CRYSTAL AND FIBER

Номер: US20130214195A1

Автор: Fengyan Mou

Принадлежит:

The invention discloses a preparation method of a heat-insulation crystal. The preparation method comprises the steps of mixing carbon, quartz, feldspar, and boron in the mass ratio of 5:1:1:3, then placing the mixture into a calciner for calcining, and cooling to obtain the heat-insulation crystal. The invention further discloses a preparation method of a heat-insulation fiber by using the heat-insulation crystal and a fiber to create a heat-insulation fiber. The heat-insulation crystal, the heat-insulation fiber and the heat-insulation product have superior warming and heat-insulation effects and deodorizing functions. 1. A heat insulating crystal comprising:Carbon, quartz, feldspar, and boron in a mass ratio of 5:1:1:32. A method of making heat insulation crystals comprising:Mixing carbon, quartz, feldspar, and boron at a mass ratio of 5:1:1:3 to create a mixture,Heating said mixture to about 3800-4200° F., at an increase of about 800-1200° F. per hour, then cooling the mixture,Further heating said mixture to a temperature of about 4500-5500° F., at an increase of about 1800-2200° F. per hour, then maintaining said temperature of about 4500-5500° F. for 15-30 minutes.Cooling the obtained crystal.32. A method of making insulation crystals as in claim () , further comprising:Heating said mixture to about 4000° F., at an increase of about 1000° F. per hour, then cooling the mixture,Further heating said mixture to a temperature of about 5000° F., at an increase of about 2000° F. per hour, then maintaining said temperature of about 5000° F. for 20 minutes.4. The composition of matter formed by the method of .5. The composition of matter formed by the method of .6. A method for manufacturing heat insulating fibers comprising:{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, 'Producing heat insulation crystals according to'}Processing said heat insulation crystals into about 1-10 nanometer particles,Adding heat crystals to fibers at a mass ratio of about 3-5-% heat ...

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Номер записи: 43

29-08-2013 дата публикации

Method For Producing A Multifilament Composite Thread And Melt Spinning Device

Номер: US20130221559A1

Автор: Hutter Hans-Gerhard, Schafer Klaus

Принадлежит: Oerlikon Textile GmbH & Co. KG

The invention relates to a device for the production of strand-shaped products such as synthetic bands, fiber strands, monofilaments, or films, which are extruded from a polymer melt. The device comprises an extrusion device, a cooling device, several rolling feed units and several processing devices mounted between the rolling feed units. In order to obtain short control paths and compact machine units, the processing devices according to the invention are arranged in tiers one above the other, wherein the rolling feed units face each other at both ends of the processing devices so that the product passes through the processing devices in the opposite direction. 1. A method for the production of a multifilament composite thread in a melt spinning process comprising;extruding numerous of filament strands with a plurality of spinnerets;pulling off the filament strands from the spinnerets and dividing the filament strands into a plurality of filament bundles;drawing the filament bundles and combining the filament bundles to form the composite thread,wherein the filament bundles pass through a plurality of preparation stations for wetting after cooling such that the filament bundles pass through a first preparation station with or without, selectively, a supplementary wetting.2. The method according to wherein the filament bundles receive a main wetting in a second preparation station after the drawing.3. The method according to wherein the main wetting of the filament bundle is applied with the same or different fluid applications to each of the filament bundles.4. The method according to wherein after the dividing of the filament strands claim 1 , the filament bundles claim 1 , without a supplementary wetting are twisted by means of an air treatment during the pulling-off.5. The method according to wherein the filament bundles are drawn individually or collectively adjacent to one another with an S-guidance or Z-guidance through a plurality of godets.6. The method ...

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Номер записи: 44

29-08-2013 дата публикации

POLYESTER FIBER AND METHOD FOR PREPARING THE SAME

Номер: US20130224468A1

Автор: Kim Hee-Jun, Kim Jae-Hyung, Kim Ki-jeong, Kwak Dong-Jin, Lee Sang-Mok, Youn Jung-Hoon

Принадлежит: KOLON INDUSTRIES, INC.

This disclosure relates to polyester fiber that can be used for an airbag fabric. Particularly, the present invention relates to a polyester fiber that has elongation of 1.65% to 2.5% when tensile strength of 1.0 g/d is applied after heat treatment at 185° C. for 2 minutes, and additionally elongates in the range of elongation from 0.5% to 5% at the range of tensile strength from 8.0 g/d to the maximum strength. Also disclosed is a method for preparing the same, and fabric for an airbag prepared therefrom. The polyester fiber simultaneously has low initial Young's modulus and excellent mechanical properties, and thus, it may provide excellent packing, dimensional stability, and excellent air cut-off effect, and simultaneously, minimize impact applied to a passenger thus safely protecting a passenger. 1. A polyester fiber having elongation of 1.65% to 2.5% when tensile strength of 1.0 g/d is applied after heat treatment at 185° C. for 2 minutes , which additionally elongates in the range of elongation from 0.5% to 5% at the range of tensile strength from 8.0 g/d to the maximum strength.2. The polyester fiber according to claim 1 , wherein the polyester fiber has elongation of 16% to 22% when tensile strength of 5.0 g/d is applied after heat treatment at 185° C. for 2 minutes.3. The polyester fiber according to claim 1 , wherein the polyester fiber has elongation of 0.8% to 2.0% when tensile strength of 1.0 g/d is applied at room temperature claim 1 , and additionally elongates in the range of elongation from 1.5% to 5% at the range of tensile strength from 8.8 g/d to the maximum strength.4. The polyester fiber according to claim 1 , wherein the polyester fiber has elongation of 6.5% to 13.5% when tensile strength of 5.0 g/d is applied at room temperature.5. The polyester fiber according to claim 1 , wherein the polyester fiber has tensile strength of 4.5 g/d or more at elongation of 20% after heat treatment at 185° C. for 2 minutes.6. The polyester fiber according to ...

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Номер записи: 45

05-09-2013 дата публикации

Continuous piezoelectric film including polar polymer fibers

Номер: US20130229091A1

Автор: James E. West, Kailiang Ren, Michael Yu

Принадлежит: JOHNS HOPKINS UNIVERSITY

A continuous piezoelectric film can include a plurality of fibers, each fiber including a polypeptide, wherein molecules of the polypeptide have electric dipole moments that are aligned such that the piezoelectric fiber provides a piezoelectric effect. The continuous piezoelectric film has at least one piezoelectric constant d 31 or d 33 that is at least 1 pC/N. The continuous piezoelectric film can be prepared hot pressing a mat of aligned piezoelectric fibers.

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Номер записи: 46

12-09-2013 дата публикации

Separation membrane for water treatment and manufacturing method thereof

Номер: US20130233791A1

Автор: Chong Min Koo, Ho Bum Park, Jang Woo Lee, Ji Young Jung, Kyung Youl Baek, Sang Hee Park, Seung Gun YU, Seung Sang Hwang, Soon Man Hong, Young Hoon Cho

Принадлежит: Korea Advanced Institute of Science and Technology KAIST

The present invention relates to a separation membrane for water treatment having high water flux and membrane contamination preventing characteristics, and a manufacturing method thereof. The separation membrane for water treatment according to the present invention includes a nanofiber wherein the separation membrane has a surface electric charge. According to the present invention, a separation membrane for water treatment having high water flux and membrane contamination preventing characteristics, and a manufacturing method thereof may be implemented.

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Номер записи: 47

19-09-2013 дата публикации

PROCESS FOR SPINNING UHMWPE, UHMWPE MULTIFILAMENT YARNS PRODUCED THEREOF AND THEIR USE

Номер: US20130241104A1

Автор: Marissen Roelof, Simmelink Joseph Arnold Paul Maria

Принадлежит: DSM IP ASSETS B.V.

Gel-spinning processes for producing a high tensile strength ultra high molecular weight polyethylene (UHMWPE) multifilament yarn comprising ultra-low dtex filaments, include applying a draw ratio DRto fluid filaments obtained by spinning a solution of UHMWPE through a spinneret and into an air gap, is at least 450, wherein DR=DR×DR, the DRand DRbeing the draw ratios in the spinholes and in the air gap, respectively; and provided that DRis at least 30. The UHMWPE multifilament yarns produced thereof were characterized by a tensile strength of at least 3.5 GPa and contained filaments having a dtex of at most 0.5. The invention further relates to products comprising said yarns, e.g. fabrics, medical devices and composite and ballistic articles. 1. A process for gel-spinning high tensile strength UHMWPE yarns comprising ultra-low dtex filaments , the process containing the steps of:a) preparing a solution of an UHMWPE in a solvent;b) spinning through a spinneret and into an air gap the solution of step a) to form fluid filaments, the spinneret containing multiple spinholes and wherein each spinhole comprises at least one zone with a gradual decrease in diameter and wherein the downstream diameter of the spinhole from which the solution is issued in the air gap is between 0.1 and 1.5 mm;{'sub': fluid', 'sp', 'ag', 'sp', 'ag, 'c) drawing the fluid filaments with a fluid draw ratio DR=DR×DR, wherein DRand DRare the draw ratios in the spinholes and in the air gap, respectively; and'}d) cooling the fluid filaments to form solvent-containing gel filaments; and{'sub': 'solid', 'e) removing at least partly the remaining solvent from the gel filaments to form solid filaments, before, during or after drawing the solid filaments with a draw ratio DRof at least 4; wherein'}{'sub': fluid', 'ag, 'the fluid filaments are drawn with a fluid draw ratio DRof at least 450, provided that DRis at least 30.'}2. The process of wherein DRis between 5 and 20 and DRis chosen to yield a DRof at ...

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Номер записи: 48

19-09-2013 дата публикации

Electrospinning Process for Manufacture of Multi-Layered Structures

Номер: US20130241115A1

Автор: Core Lee, Marini John, Pham Quynh, Sharma Upma, Yan Xuri

Принадлежит:

Devices and methods for high-throughput manufacture of concentrically layered nanoscale and microscale fibers by electrospinning are disclosed. The devices include a hollow tube having a lengthwise slit through which a core material can flow, and can be configured to permit introduction of sheath material at multiple sites of Taylor cone formation formation. 1. A method of forming a structure , the structure comprising a core including a first material and a sheath including a second material around said core , the method comprising the steps of: a first wedge-shaped vessel having a first slit and comprising an electrically conductive material;', 'a second wedge-shaped vessel having a second slit, wherein the first wedge-shaped vessel is disposed inside of the second wedge-shaped vessel;', 'first and second fluid reservoirs containing the first and second materials, respectively, wherein the first and second fluid reservoirs are in fluid communication with the first and second wedge-shaped vessels, respectively; and', 'a voltage source configured to apply a voltage to at least one of the first and second materials;, 'providing an apparatus, comprisingactivating the voltage source to apply a voltage of between 1 and 250 kV;moving the first material from the first fluid reservoir to the first wedge-shaped vessel; andmoving the second material from the second fluid reservoir to the second wedge-shaped vessel.2. The method of claim 1 , wherein the structure is an elongate fiber.3. The method of claim 1 , wherein the apparatus includes a collecting area having at least one electrically grounded point thereon claim 1 , the method further comprising the step of collecting the structure within the collecting area.4. The method of claim 1 , wherein the step of moving the first fluid from the first fluid reservoir to the first wedge-shaped vessel includes supplying a gas to the first fluid reservoir at a substantially constant pressure.5. The method of claim 1 , wherein the ...

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Номер записи: 49

26-09-2013 дата публикации

Field emission device and nanofiber manufacturing device

Номер: US20130251838A1

Автор: Jae Hwan Lee

Принадлежит: Shinshu University NUC, Toptec Co Ltd

Disclosed herein is a field emission device which makes mass-production of nanofibers having satisfactory performance possible. The field emission device ( 20 ) includes a casing ( 100 ), a collector ( 150 ), a nozzle block ( 110 ) and a power supply ( 160 ). A positive electrode of the power supply ( 160 ) is connected to the collector ( 150 ), and a negative electrode of the power supply ( 160 ) is connected to the nozzle block ( 110 ) and the casing ( 100 ). When the collector ( 150 ) is viewed from the nozzle block ( 110 ), a periphery of an insulator ( 152 ) is closer to the outside of the device than a periphery of the collector ( 150 ). When the thickness of the insulator is ┌a┘ and the distance between the periphery of the insulator and the periphery of the collector is ┌b┘, both ┌a≧6 mm┘ and ┌a+b≧50 mm┘ are satisfied.

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Номер записи: 50

26-09-2013 дата публикации

PRODUCING METHOD OF SYNTHETIC COLLAGEN NANO-FIBER

Номер: US20130253099A1

Автор: KATAOKA YUKINORI, Kobayashi Hisatoshi, SHIMATANI AKIKO, Terada Dohiko, TODOKORO MASAMI

Принадлежит: JNC CORPORATION

With respect to synthetic collagen that has so far been difficult to be nano-fiberized, a method for producing uniform and long fibrous nano-fibers containing a synthetic collagen is described. The nano-fibers contain a polypeptide having a peptide fragment represented by Formula (): 2. The method according to claim 1 , wherein a concentration of the polypeptide in the spinning solution is from 0.1 wt % to 10 wt %.3. The method according to claim 1 , wherein a concentration of the polymer in the spinning solution is from 0.1 wt % to 10 wt %.4. The method according to claim 1 , wherein a weight ratio of the polypeptide to the polymer in the spinning solution is from 10:1 to 1:40.5. The method according to claim 1 , wherein the polymer comprises one claim 1 , two or more selected from the group consisting of natural collagen claim 1 , polyethylene glycols claim 1 , polyvinyl alcohols claim 1 , and polyglycolic acids. This application claims the priority benefit of Japan application serial no. 2012-067627, filed on Mar. 23, 2012. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.The invention relates to a synthetic collagen nano-fiber and a producing method thereof.Since a fiber having a nanometer-scale diameter (1 to 1000 nm) displays different material properties from those of a fiber having a micrometer or larger scale diameter, it is generally called a nano-fiber to be distinguished from other fibers. As the nano-fiber has a very large surface area per unit mass (i.e. specific surface area), its application to functional molecular carrier material, contact reaction material with fluids, material for clothes, industrial material products, daily life material products, environmental material products, electrodes and membranes of fuel cells and secondary cells, material for regenerative medicine, high efficiency particulate air (HEPA) filters, electronic paper, wearable cells, ...

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Номер записи: 51

03-10-2013 дата публикации

METHOD AND DEVICE FOR MANUFACTURING NANOFIBER

Номер: US20130256930A1

Автор: LEE Jae Hwan

Принадлежит:

Provided is a nano-fiber manufacturing apparatus capable of mass-producing nano-fibers having uniform quality at a low manufacturing cost. The nano-fiber manufacturing apparatus is equipped with a nozzle block having a plurality of upward nozzles and a polymer solution supply channel. The nano-fiber manufacturing apparatus field-emits the nano-fibers while overflowing the polymer solution from the upward nozzles, and at the same time, collects the overflowed polymer solution so as to reuse it. The nano-fiber manufacturing apparatus is additionally equipped with a raw material tank, regeneration tanks, a middle tank, a first transfer device for transferring the polymer solution to the regeneration tanks, a second transfer device for transferring the polymer solution to the middle tank, and first and second transfer control devices for controlling the transfer operations of the first and second transfer devices. 1. A nano-fiber manufacturing apparatus , which includes: a nozzle block having a plurality of upward nozzles for upwardly discharging a polymer solution from outlets of the upward nozzles and a polymer solution supply channel for supplying the polymer solution to the upward nozzles; a collector arranged above the nozzle block; and a power supply for applying high voltage between the upward nozzles and the collector , and which is capable of field-emitting nano-fibers by discharging the polymer solution from the outlets of the plural upward nozzles while overflowing the polymer solution from the outlets of the plural upward nozzles , and at the same time , collecting the polymer solution overflowed from the outlets of the upward nozzles so as to the collected polymer solution as a raw material of nano-fibers , the nano-fiber manufacturing apparatus comprising:a polymer solution collecting channel formed in the nozzle block for collecting the polymer solution overflowed from the outlets of the upward nozzles;a raw material tank for storing the polymer solution ...

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Номер записи: 52

03-10-2013 дата публикации

Organic-inorganic hybrid nanofibres having a mesoporous inorganic phase, preparation thereof by electrospinning, membrane, electrode, and fuel cell

Номер: US20130260283A1

Автор: Chrystel Laberty, Clement Sanchez, Frank Pereira, John Bass, Karine Valle, Philippe Belleville

Принадлежит: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS, Commissariat a lEnergie Atomique et aux Energies Alternatives CEA, Universite Pierre et Marie Curie Paris 6

Organic-inorganic hybrid nanofibres comprising two phases: a first mineral phase comprising a structured mesoporous network with open porosity; and a second organic phase comprising an organic polymer, wherein said organic phase is basically not present inside the pores of the structured mesoporous network. A membrane and an electrode comprising said nanofibres. A fuel cell comprising said membrane and/or said electrode. A method of preparing said nanofibres by electrically assisted extrusion (electrospinning).

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Номер записи: 53

03-10-2013 дата публикации

HIGH MOLECULAR WEIGHT POLYETHYLENE

Номер: US20130260624A1

Автор: FORTE Giuseppe, Rastogi Sanjay, RONCA Sara, Tjaden Hendrik Jacob

Принадлежит: TEIJIN ARAMID B.V.

The present invention pertains to a polyethylene polymer characterised by the following properties: A number average molecular weight Mn of at least 2.0*10g/mol, a weight average molecular weight of at least 2.0*10g/mol, a Mw/Mn ratio of above 6, and a strain hardening slope of below 0.10 N/mm at 135° C. It has been found that a polymer with these properties have be converted through solid state processing into films and fibers with good properties. A solid state processing process, films and fibers, and their use are also claimed. 1. A polyethylene polymer , wherein the polyethylene polymer has a number average molecular weight Mn of at least 2.0*10g/mol , a weight average molecular weight Mw of at least 2.0*10g/mol , a Mw/Mn ratio of above 6 , and a strain hardening slope of below 0.10 N/mm at 135° C.2. The polyethylene polymer according to claim 1 , wherein the polymer has a Mn in the range of 2.0-10*10gram/mole claim 1 , in combination with a Mw/Mn of at least 10.3. The polyethylene polymer according to claim 1 , wherein the polymer has a Mn in the range of 2.0-8*10gram/mole claim 1 , in combination with a Mw/Mn of at least 15.4. The polyethylene polymer according to claim 1 , wherein the polymer has an Mn of at least 800 claim 1 ,000 g/mol and a Mw/Mn ratio between 6 and 15.5. The polyethylene polymer according to claim 1 , wherein the Mw/Mn ratio of the polymer is more than 8.6. The polyethylene polymer according to claim 1 , wherein the weight average molecular weight Mw of the polymer is more than 2 claim 1 ,000 claim 1 ,000 g/mol.7. The polyethylene polymer according to claim 1 , wherein the polymer comprises a first fraction with a Mw of at least 7 million g/mol in combination with a second fraction with a Mw of at most 1 million gram/mol.8. The polyethylene polymer polymer according to claim 1 , wherein the polymer has an elastic shear modulus determined directly after melting at 160° C. of at most 1.4 MPa.9. A method for manufacturing a polyethylene ...

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Номер записи: 54

10-10-2013 дата публикации

Formation Of Conjugated Protein By Electrospinning

Номер: US20130264731A1

Автор: Baier Stefan, GIVEN Peter, Kanjanapongkul Kobsak, WEISS Jochen

Принадлежит: PEPSICO, INC.

A method of preparing a polysaccharide-protein fiber by preparing an aqueous solution comprising a polysaccharide and a protein, applying a high voltage to the solution, collecting the fiber on a collecting plate. 1. A method of preparing a carbohydrate-protein fiber or particle via electro-spinning comprising steps ofpreparing an aqueous solution comprising a carbohydrate and a protein,applying a voltage of 15 to 25 kV to the solution,collecting the fiber on a collecting plate.2. The method of wherein the electro-spinning is needleless.3. The method of wherein the carbohydrate has an aldehyde group or forms an aldehyde group through isomerism.4. The method of wherein the carbohydrate is a dextran.5. The method of wherein the dextran molecular weight is between about 10 kDa and about 500 kDa.6. The method of wherein the dextran is present at concentration of 0.1 g/mL to about 5.0 g/mL.7. The method of wherein the protein is selected from microbial claim 1 , animal claim 1 , dairy claim 1 , and vegetable.8. The method of wherein the protein is a whey protein isolate (WPI).9. The method of wherein the aqueous solution comprises carbohydrate and protein at a molar ratio (w/w) from 50:1 to 1:50.10. The method of wherein the aqueous solution comprises carbohydrate and protein at a molar ratio (w/w) from 3:1 to 1:10.11. The method of wherein the aqueous solution comprises dextran and WPI.12. The method of further comprising the step of incubating the fiber at a relative humidity of at least 45% claim 1 , for up to 24 hours claim 1 , whereby a conjugated film is formed.13. The method of wherein the relative humidity is between 65% and 75%.14. The method of wherein the temperature is in the range of 10-70° C.15. The method of wherein the fiber diameter is about 100 nm to about 500 nm.16. The method of wherein the fiber diameter is about 150 nm to about 250 nm.17. A method of preparing a polysaccharide-protein fiber by electro-spinning comprising steps ofpreparing an aqueous ...

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Номер записи: 55

10-10-2013 дата публикации

Melt-blown nonwoven fabric, and production process and apparatus for the same

Номер: US20130266874A1

Автор: Akio Matsubara, Hirohisa Shiode, Kenichi Suzuki, Shingo Kajiyama, Takayuki Kubo

Принадлежит: Mitsui Chemicals Inc

It is an object of the present invention to provide a stable production process for a melt-blown nonwoven fabric comprising thin fibers and having extremely few thick fibers [number of fusion-bonded fibers] formed by fusion bonding of thermoplastic resin fibers to one another, and an apparatus for the same. The present invention relates to a melt-blown nonwoven fabric comprising polyolefin fibers and having (i) a mean fiber diameter of not more than 2.0 μm, (ii) a fiber diameter distribution CV value of not more than 60%, and (iii) 15 or less fusion-bonded fibers based on 100 fibers; a production process for a melt-blown nonwoven fabric characterized by feeding cooling air of not higher than 30° C. from both side surfaces of outlets of slits 31 from which high-temperature high-velocity air is gushed out and thereby cooling the spun molten resin; and a production apparatus for the same.

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Номер записи: 56

17-10-2013 дата публикации

NANOFIBER MANUFACTURING DEVICE

Номер: US20130273190A1

Автор: LEE Jae Hwan

Принадлежит:

The present invention relates to a nanofiber manufacturing apparatus having a plurality of electrospinning units disposed serially along the conveying direction of a long sheet, each electrospinning unit including: a conductive case; a collector attached to the case by means of an insulation member; a nozzle block disposed to face the collector and having a plurality of nozzles from which polymer solution is ejected mounted thereon; a power supply adapted to apply a high voltage to a space between the collector and the nozzle block; an auxiliary belt formed of an insulative porous endless belt located and freely rotated at a position encompassing the collector; and an auxiliary belt driver adapted to rotate the auxiliary belt to a rotating speed corresponding to the conveying speed of the long sheet, wherein the positive electrode of the power supply is connected to the collector, and the negative electrode thereof to the nozzle block and the case, and when the collector is seen from the nozzle block, the outer edge of the insulation member is located more outwardly than the outer edge of the collector, so that if it is assumed that the thickness of the insulation member is a and the distance between the outer edge of the insulation member and the outer edge of the collector is b, it is satisfied that a≧6 mm and a+b≧50 mm. 1. A nanofiber manufacturing apparatus having a plurality of electrospinning units disposed serially along the conveying direction of a long sheet conveyed at a given conveying speed to accumulate nanofibers on the long sheet , each electrospinning unit comprising:a conductive case;a collector attached to the case by means of an insulation member;a nozzle block disposed to face the collector and having a plurality of nozzles from which polymer solution is ejected mounted thereon;a power supply adapted to apply a high voltage to a space between the collector and the nozzle block;an auxiliary belt formed of an insulative porous endless belt located ...

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Номер записи: 57

24-10-2013 дата публикации

POROUS NANO-FIBER MATS TO REINFORCE PROTON CONDUCTING MEMBRANES FOR PEM APPLICATIONS

Номер: US20130280642A1

Автор: Gummalla Mallika, LEE Kyung Min, Pintauro Peter, Wycisk Ryszard, Yang Zhiwei

Принадлежит: UTC POWER CORPROATION

A method of manufacturing a proton conducting fuel cell composite membrane includes the step of electrospinning a non-charged polymeric material, such as PVDF and PSF, into fiber mats. The fibers are fused to one another to provide a welded porous mat. The welded porous mat is filled with proton conducting electrolyte, such as PFSA polymer, to generate a proton conducting composite membrane. The resulting proton conducting fuel cell membrane comprises a randomly oriented, three dimensional interlinked fiber lattice structure filled with proton conducting electrolyte, such as PFSA polymer. 1. A method of manufacturing a proton conductive fuel cell membrane comprising:electrospinning a non-charged polymeric material into fiber mats;fusing the fibers to one another to provide a welded porous mat; andfilling the welded porous mat with a proton conducting polymer solution, to provide a proton conducting composite membrane for use in electrochemical cells.2. The method according to claim 1 , wherein the fusing step includes interlinking the fibers to one another at fiber intersections using solvent welding.3. The method according to claim 1 , wherein the electrospinning step includes producing fiber mats having an average fiber diameter in the range of 100-1150 nm claim 1 , mat thickness in the range of 10-100 μm claim 1 , and mat porosity in the range of 40-95%.4. The method according to claim 3 , wherein the average fiber diameter is 100-600 nm.5. The method according to claim 3 , wherein the polymeric material includes at least one of PVDF and PSF.6. The method according to claim 3 , wherein the electrospinning step includes dissolving the polymeric material in mixture solvents including DMAc.7. The method according to claim 6 , wherein the electrospinning step includes selecting polymeric material concentration claim 6 , solvent ratio claim 6 , voltage claim 6 , spinneret-to-collector distance and polymeric material solution flow to produce fibers in the range without ...

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Номер записи: 58

14-11-2013 дата публикации

Polymer composite materials for building air conditioning or dehumidification and preparation method thereof

Номер: US20130299121A1

Автор: Chang-Kook Hong, Churl-Hee Cho, Hyeong-seon Oh, Jae-sik Ryu, Jeong-Gu Yeo, Kuck-Tack Chue, Sang-Youn Oh, Se-hee Kim, Seung-hyun Shin, Young-Soo Ahn

Принадлежит: Korea Institute of Energy Research KIER

The present disclosure relates to the preparation of a polymer composite material for building air conditioning or dehumidification having superior water-adsorbing ability, durability and antibacterial properties by electro spinning. Specifically, the disclosed method for preparing a polymer composite material for building air conditioning or dehumidification includes: (S1) adding a crosslinking agent or a crosslinking agent and a porous filler for conferring durability and antibacterial properties into a hydrophilic polymer solution antibacterial properties to prepare a polymer composite material solution; (S2) electrospinning the polymer composite material solution to prepare a nanofiber sheet; and (S3) crosslinking the nanofiber sheet by heat-treatment. Since the disclosed polymer composite material for building air conditioning or dehumidification has superior antibacterial properties and excellent water-adsorbing ability and durability, the polymer composite material can perform dehumidification when used for air conditioning of a building, thereby reducing air conditioning load and improving energy efficiency. Further, through dehumidifying cooling, the high-efficiency polymer composite material can remove moisture from the hot and humid air in the summer, thus reducing air conditioning load by decreasing latent heat load and saving energy. In addition, the polymer composite material can be used in moisture-sensitive production processes, industrial applications requiring moisture control or protection from damage or corrosion by moisture to reduce moisture and provide dry air.

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Номер записи: 59

14-11-2013 дата публикации

Wet spinning apparatus and method for wet spinning

Номер: US20130300013A1

Автор: Hiromasa Inada, Katsuhiko Ikeda

Принадлежит: Mitsubishi Rayon Co Ltd

Disclosed are a wet spinning apparatus and a wet spinning method, which enable to manufacture fibers with excellent quality by controlling the flow of a coagulation liquid in a spinning bath and which enable to cope with high speed spinning (or high speed drawing). A wet spinning apparatus comprises a spinning bath at one end in which there are provided a nozzle for discharging a spinning raw liquid and coagulation liquid discharge ports and for discharging a coagulation liquid, at the other end in which there are provided a drawing roll for drawing coagulated filaments and a coagulation liquid recovery portion into which the coagulation liquid flows out. The spinning bath has a coagulation bath portion having a cross sectional area gradually reduced from one end to the other end, for coagulating the spinning raw liquid, and a filament running portion having a cross sectional area gradually enlarged from one end to the other end, for allowing the coagulated filaments to run therein.

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Номер записи: 60

21-11-2013 дата публикации

Carbon and carbon/silicon composite nanostructured materials and casting formation method

Номер: US20130309484A1

Автор: Michael J. Sailor, Timothy Kelly

Принадлежит: UNIVERSITY OF CALIFORNIA

The invention provides nanostructure composite porous silicon and carbon materials, and also provides carbon nanofiber arrays having a photonic response in the form of films or particles. Composite materials or carbon nanofiber arrays of the invention are produced by a templating method of the invention, and the resultant nanomaterials have a predetermined photonic response determined by the pattern in the porous silicon template, which is determined by etching conditions for forming the porous silicon. Example nanostructures include rugate filters, single layer structures and double layer structures. In a preferred method of the invention, a carbon precursor is introduced into the pores of a porous silicon film. Carbon is then formed from the carbon precursor. In a preferred method of the invention, liquid carbon-containing polymer precursor is introduced into the pores of an porous silicon film The precursor is thermally polymerized to form a carbon-containing polymer in the pores of the porous silicon film, which is then thermally carbonized to produce the nano structured composite material. A carbon nanofiber array is obtained by dissolving the porous silicon. A carbon nanofiber array can be maintained as a film in liquid, and particles can be formed by drying the material.

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Номер записи: 61

21-11-2013 дата публикации

HYALURONAN FIBRES, METHOD OF PREPARATION THEREOF AND USE THEREOF

Номер: US20130309494A1

Автор: Burgert Ladislav, Hrdina Radim, Masek David, Velebny Vladimir

Принадлежит: CONTIPRO BIOTECH S.R.O.

The invention relates to the method of preparation of hyaluronic acid-based fibres, where first the spinning solution of hyaluronic acid and/or a metal compound thereof, optionally containing a metal salt or a hyaluronic acid compound and metal ions, is prepared, then the spinning solution is introduced into the coagulation bath comprising an acid, an alcohol and not more than 10% wt. of water, and optionally a metal salt, resulting in forming a fibre which is preferably left in the coagulation bath and/or is drawn, then the fibre is washed with alcohol and dried. After washing of the fibre, metal ions may be introduced in the fibre by means of the metalization bath. Further, the invention relates to the fibres based on hyaluronic acid and/or a metal compound thereof, having the fibre (monofilament) diameter 4 μm to 1 mm, linear weight 0.1 to 30 g/1000 m (0.1 to 30 tex), tensile strength 0.5 to 3 cN·dtexand loop strength 20 to 80% of the tensile strength. The invention also relates to a silk tow that contains 2 to 50 primary fibres. Moreover, the invention relates to the use of the fibres for the production of woven and non-swoven fabrics. 1. A method of preparation of fibres based on hyaluronic acid and/or a metal compound thereof characterized by that a spinning aqueous solution containing hyaluronic acid and/or a metal compound thereof is prepared which is subsequently spun in a coagulation bath containing an alcohol and an acid , then the fibre is washed and after washing , the fibre is dried.2. The method according to claim 1 , characterized by that after spinning in the coagulation bath claim 1 , at least one of the steps selected from the group comprising maturation of the fibre in the coagulation bath for 1 second to 48 hours and drawing of the fibre at the drawing ratio within the range of 1.1 to 7 is performed.3. The method according to any of the preceding claims claim 1 , characterized by that the spinning solution of the hyaluronic acid and/or a metal ...

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Номер записи: 62

28-11-2013 дата публикации

ELECTROSPINNING PROCESS FOR FIBER MANUFACTURE

Номер: US20130313758A1

Автор: Marini John, Pham Quynh, Sharma Upma

Принадлежит:

Devices and methods for high-throughput manufacture of concentrically layered nanoscale and microscale fibers by electrospinning are disclosed. The devices include a hollow tube having a lengthwise slit through which a core material can flow, and can be configured to permit introduction of sheath material at multiple sites of Taylor cone formation formation. 1. A method of forming a structure comprising a core including a first material and a sheath including a second material around said core , the method comprising the steps of:providing the first material in a tube having an external surface with a longitudinal slit therein;providing the second material to the external surface of said tube; andapplying an electric field to at least a portion of the tube to thereby form a plurality of jets of said first and second materials.2. The method of claim 1 , wherein said structure is a fiber.3. The method of claim 2 , wherein said fiber has a diameter of less than 20 microns.4. The method of claim 1 , wherein said plurality of jets comprises at least eight jets.5. The method of claim 1 , wherein said slit has a width of between 0.01 and 20 millimeters.6. The method of claim 5 , wherein said slit has a width of between 0.1 and 5 millimeters.7. The method of claim 6 , wherein said tube has a length of between 5 centimeters and 50 meters.8. The method of claim 1 , wherein the first material is pumped into said tube at a rate of between 0.01 and 10 milliliters per hour.9. The method of claim 1 , further comprising the step of placing a collector at a distance of between 1 and 100 centimeters from said slit.10. The method of claim 1 , wherein said step of providing the second material to the external surface of said tube comprises at least partially submerging said tube in a bath containing the second material.11. A method of forming a structure comprising a core including a first material and a sheath including a second material around said core claim 1 , the method ...

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Номер записи: 63

28-11-2013 дата публикации

Electrospinning of ptfe with high viscosity materials

Номер: US20130316103A1

Автор: Bruce L. Anneaux, David P. Garner, Robert L. Ballard

Принадлежит: Zeus Industrial Products Inc

An improved process for forming a PTFE mat is described. The process includes providing a dispersion with PTFE, a fiberizing polymer and a solvent wherein said dispersion has a viscosity of at least 50,000 cP. An apparatus is provided which comprises a charge source and a target a distance from the charge source. A voltage source is provided which creates a first charge at the charge source and an opposing charge at the target. The dispersion is electrostatically charged by contact with the charge source. The electrostatically charged dispersion is collected on the target to form a mat precursor which is heated to remove the solvent and the fiberizing polymer thereby forming the PTFE mat.

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Номер записи: 64

05-12-2013 дата публикации

SYSTEMS AND METHODS FOR MANUFACTURING BULKED CONTINUOUS FILAMENT

Номер: US20130324677A1

Автор: Clark Thomas

Принадлежит:

A method of manufacturing bulked continuous carpet filament which, in various embodiments, comprises: (A) grinding recycled PET bottles into a group of flakes; (B) washing the flakes; (C) identifying and removing impurities, including impure flakes, from the group of flakes; (D) passing the group of flakes through an MRS extruder while maintaining the pressure within the MRS portion of the MRS extruder below about 1.5 millibars; (E) passing the resulting polymer melt through at least one filter having a micron rating of less than about 50 microns; and (F) forming the recycled polymer into bulked continuous carpet filament that consists essentially of recycled PET. 1. A bulked continuous carpet filament consisting essentially of a recycled polymer.2. The bulked continuous carpet filament of claim 1 , wherein said bulked continuous carpet filament is produced using a process that includes at least a step of passing a recycled polymer through an extruder comprising:(A) a first satellite screw extruder, said first satellite screw extruder comprising a first satellite screw that is mounted to rotate about a central axis of said first satellite screw;(B) a second satellite screw extruder, said second satellite screw extruder comprising a second satellite screw that is mounted to rotate about a central axis of said second satellite screw;(C) a pressure regulation system that is adapted to maintain a pressure within said first and second satellite screw extruders below a pressure of about 1.5 millibars as said recycled polymer passes through said first and second screw extruders; and(D) a satellite screw extruder support system that is adapted to orbitally rotate said first and second satellite screws about a main axis as said recycled polymer passes through said first and second screw extruders, said main axis being substantially parallel to both: (1) said central axis of said first satellite screw; and (2) said central axis of said second satellite screw.3. The bulked ...

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Номер записи: 65

12-12-2013 дата публикации

PROCESS AND APPARATUS FOR PRODUCING NANOFIBERS USING A TWO PHASE FLOW NOZZLE

Номер: US20130328225A1

Автор: Bryner Michael, Marshall Larry

Принадлежит:

The disclosure relates to an apparatus and method for producing nanofibers and non-woven nanofibrous materials from polymer melts, liquids and particles using a two-phase flow nozzle. The process comprises supplying a first phase comprising a polymer melt and a second phase comprising a pressurized gas stream to a two-phase flow nozzle; injecting the polymer melt and the pressurized gas stream into a mixing chamber within the two-phase flow nozzle wherein the mixing chamber combines the polymer flow and pressurized gas into a two-phase flow; distributing the two-phase flow uniformly to a converging channel terminating into an channel exit wherein the converging channel accelerates the two-phase flow creating a polymeric film along the surface of the converging channel and fibrillating the polymeric film at the channel exit of the converging channel in the form of a plurality of nanofibers. 1. A process for producing nanofibers from a two-phase nozzle comprising the steps of:a) supplying a first phase comprising a polymer melt and a second phase comprising a pressurized gas stream to a two-phase flow nozzle;b) injecting the polymer melt and the pressurized gas stream into a mixing chamber within the two-phase flow nozzle wherein the mixing chamber combines the polymer flow and pressurized gas into a two-phase flow;c) distributing the two-phase flow uniformly to a converging channel terminating into an channel exit wherein the converging channel accelerates the two-phase flow creating a polymeric film along the surface of the converging channel;d) fibrillating the polymeric film at the channel exit of the converging channel in the form of a plurality of nanofibers.2. The method of claim 1 , wherein the pressurized gas stream is heated to a temperature above the melting temperature of the polymer.3. The method of wherein the two-phase flow is rotational.4. The method of claim 1 , wherein the converging channel has a conical geometry.5. The method of claim 1 , wherein ...

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Номер записи: 66

12-12-2013 дата публикации

INORGANIC FIBERS

Номер: US20130331254A1

Автор: Murayama Kazutaka, Oikawa Jun, Sato Kiyoshi

Принадлежит: Nichias Corporation

Provided are inorganic fibers which can exhibit high biosolubility and have excellent heat resistance as the constituting material for a filter material, a sealing material or the like, while exerting minimized effects on the human body or the living environment even when the fibers have an average diameter of 1 μm or less. Inorganic fibers including 35 mass % to 88 mass % of AlO, 3 mass % to 45 mass % of CaO and 5 mass % to 40 mass % of SiO, wherein the total content of AlO, CaO and SiOis 98 mass % or more of the entire fibers. 1. Inorganic fibers comprising 35 mass % to 88 mass % of AlO , 3 mass % to 45 mass % of CaO and 5 mass % to 40 mass % of SiO , wherein the total content of AlO , CaO and SiOis 98 mass % or more of the entire fibers.2. The inorganic fibers according to comprising 39 mass % to 66 mass % of AlO claim 1 , 26 mass % to 42 mass % of CaO and 8 mass % to 28 mass % of SiO claim 1 , wherein the total content of AlO claim 1 , CaO and SiOis 98 mass % or more of the entire fibers.3. The inorganic fibers according to claim 1 , wherein the inorganic fibers are produced by a method comprising:solving water-soluble basic acid aluminum, a water-soluble calcium compound and water-soluble or water-dispersible silicon compound in an aqueous medium to produce an aqueous raw material solution for spinning;spinning the aqueous raw material solution for spinning to obtain crude inorganic fibers; andfiring the crude inorganic fibers.5. The inorganic fibers according to claim 3 , wherein the spinning is conducted by the electrospinning method.6. The inorganic fibers according to claim 4 , wherein the spinning is conducted by the electrospinning method.7. The inorganic fibers according to claim 2 , wherein the inorganic fibers are produced by a method comprising:solving water-soluble basic acid aluminum, a water-soluble calcium compound and water-soluble or water-dispersible silicon compound in an aqueous medium to produce an aqueous raw material solution for spinning; ...

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Номер записи: 67

02-01-2014 дата публикации

STRESS MICRO MECHANICAL TEST CELL, DEVICE, SYSTEM AND METHODS

Номер: US20140004345A1

Автор: Chasiotis Ioannis, Naraghi Mohammad

Принадлежит:

The present disclosure provides a stress micro mechanical system for measuring stress and strain in micro- and nano-fibers, tubes, and wires as well as for measuring the interface adhesion force and stress in nanofibers and nanotubes embedded in a polymer matrix. Also described are nanofibers comprising a cascade of surface ripples or periodic necks. Such surface features may be formed during cold drawing of electrospun nanofibers. 19-. (canceled)10. A nanostructure comprising:a nanofiber comprising a cascade of surface ripples.11. The nanostructure of claim 10 , wherein the surface ripples comprise a periodicity.12. The nanostructure of claim 11 , wherein an average spacing between the surface ripples is 50 nm.13. The nanostructure of claim 10 , wherein the surface ripples comprise a depth of 20-40 nm.14. The nanostructure of claim 10 , wherein the cascade of surface ripples extends along a length of the nanofiber.15. The nanostructure of claim 10 , wherein the nanofiber comprises an outer surface over a fiber core claim 10 , the outer surface comprising the surface ripples.16. The nanostructure of claim 15 , wherein the outer surface is more brittle than the fiber core.17. The nanostructure of claim 10 , wherein the nanofiber comprises a polymer.18. The nanostructure of claim 17 , wherein the polymer comprises polyacrylonitrile.19. The nanostructure of claim 10 , wherein the nanofiber has a diameter of from 300 nm to 600 nm.20. The nanostructure of claim 10 , wherein the nanofiber has a length of 10-100 microns.21. The nanostructure of claim 10 , wherein the nanofiber comprises an ultimate strain at fiber failure of 60-130%.22. The nanostructure of claim 10 , wherein the nanofiber comprises a strength in the range of 30-130 MPa.23. The nanostructure of claim 10 , wherein the nanofiber comprises an elastic modulus of from 6.1 GPa to 9.3 GPa.24. The nanostructure of claim 10 , wherein the nanofiber is fabricated by electrospinning.25. The nanostructure of claim 10 , ...

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Номер записи: 68

09-01-2014 дата публикации

Three Dimensionally and Randomly Oriented Fibrous Structures

Номер: US20140011416A1

Автор: Cai Shaobo, Xu Helan, Yang Yiqi

Принадлежит:

A randomly-oriented 3-D fibrous structure and a method for making the same. The method involves electrospinning a spinning dope with an electrospinning apparatus, wherein the spinning dope comprises: a solvent; a polymer dissolved in the solvent, wherein the dissolved polymer is in subunits having molecular weights that are about 5 to about 150 kDa; and a surfactant; to form one or more fibers that comprise a polymer-surfactant complex and that arrange randomly and evenly in three dimensions when contacting a collecting board of the electrospinning apparatus thereby forming the randomly-oriented 3-D fibrous structure. 2. The method of claim 1 , wherein the polymer is selected from the group consisting of protein claim 1 , synthetic polymer claim 1 , and combinations thereof.3. The method of claim of claim 2 , wherein the protein is selected from the group consisting of plant protein claim 2 , animal protein claim 2 , and combinations thereof.4. The method of claim 1 , wherein the spinning dope has a concentration of the surfactant that is about 5 to about 300 percent by weight of the polymer.5. The method of claim 1 , wherein the surfactant is selected from the group consisting of anionic surfactant claim 1 , cationic surfactant claim 1 , nonionic surfactant claim 1 , zwitterionic surfactant claim 1 , and combinations thereof.6. The method of claim 1 , wherein the solvent is selected from the group consisting of water claim 1 , phosphate buffered saline (PBS) claim 1 , carbonate buffer claim 1 , tris-glycine buffer claim 1 , borate buffer claim 1 , acetate buffer claim 1 , n-cyclohexyl-2-aminoethanesulfonic acid (CHES) buffer claim 1 , citric buffer claim 1 , ethanol claim 1 , chloroform claim 1 , 1 claim 1 ,4-dioxane claim 1 , methanol claim 1 , ethylene glycol claim 1 , acetone claim 1 , ethyl acetate claim 1 , methyl acetate claim 1 , hexane claim 1 , petrol ether claim 1 , citrus terpenes claim 1 , diethyl ether claim 1 , dichloromethane claim 1 , ...

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Номер записи: 69

16-01-2014 дата публикации

Polyetherimide resins with very low levels of residual contamination

Номер: US20140016450A1

Автор: Aaron ROYER, Daniel Francis Lowery, Jamuna Chakravarti

Принадлежит: SABIC INNOVATIVE PLASTICS IP BV

Compositions and methods for producing compositions comprising a monoamine-endcapped polyimide component. Based on a gas chromatography mass spectroscopy analysis of a surface rinse of the composition performed at room temperature, the composition can have at least one surface with less than or equal to 5 ppb releasable phosphorous residuals, and less than or equal to 5 ppb releasable volatile organic compound residuals. The composition can also comprise less than or equal to 10 ppb combined releasable residuals. Because of the very low levels of residual contamination, the compositions can be used to produce a variety of articles including a disk drive.

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Номер записи: 70

30-01-2014 дата публикации

Process for electrospinning chitin fibers from chitinous biomass solution and fibers and articles produced thereby

Номер: US20140027938A1

Автор: Christopher Scott Griggs, Gabriela Gurau, Jonathan R. Bonner, Patrick S. Barber, Richard P. Swatloski, Robin D. Rogers, Terrance Opichka

Принадлежит: University of Alabama UA

Disclosed are methods for electrospinning chitinous biomass solution to form chitin fibers, using ionic liquids or other ion-containing liquids as solvent. Chitin fibers produced thereby and articles containing such chitin fibers are also disclosed. The chitin fiber thus obtained has very high surface area and improved strength over currently commercially available chitin materials.

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Номер записи: 71

30-01-2014 дата публикации

COMBINED SPINNING NOZZLE FOR THE MANUFACTURE OF NANOFIBROUS AND MICROFIBROUS MATERIALS

Номер: US20140030370A1

Автор: Pokorny Marek, Rebícek Jiri, Suková Lada, Velebny Vladimir

Принадлежит:

The combined spinning nozzle for the production of nanofibrous or microfibrous materials according to the invention comprises a thin-walled electrode and a first non-conductive body adjoining the first wall of said thin-walled electrode, said first body having its wall, which faces the thin-walled electrode, provided with an array of grooves formed therein, said grooves leading to the distal end of the combined spinning nozzle and having their proximal ends connected to a supply of spinning mixture. The thin-walled electrode as well as the first non-conductive body may assume either plate-like or cylindrical shapes. The combined spinning nozzle may further comprise the second non-conductive body adjoining the second wall of the thin-walled electrode and directing the air from the proximal end towards the distal end of the nozzle. The combined spinning nozzle is easy to dismantle and clean since the spinning capillaries assume the shape of the grooves formed on the surfaces of the first or third non-conductive bodies. 1. A combined spinning nozzle for a production of nanofibrous or microfibrous materials , wherein the combined spinning nozzle comprises a thin-walled electrode and a first non-conductive body adjoining the first wall of said thin-walled electrode , said first non-conductive body having its wall , which faces said thin-walled electrode , provided with an array of grooves formed therein , said grooves leading to a distal end of said combined spinning nozzle and having their proximal ends connected to a supply of a spinning mixture.2. The combined spinning nozzle for the production of nanofibrous or microfibrous materials according to claim 1 , wherein the combined spinning nozzle further comprises a second non-conductive body adjoining a second wall of said thin-walled electrode and directing an air towards said distal end of said combined spinning nozzle.3. The combined spinning nozzle for the production of nanofibrous or microfibrous materials ...

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Номер записи: 72

30-01-2014 дата публикации

Fiber-containing composites

Номер: US20140030948A1

Автор: Choongnyun P. KIM, John Kang

Принадлежит: LIQUIDMETAL COATINGS LLC

Provided in one embodiment is a method for producing a composition, comprising: heating a first material comprising an amorphous alloy to a first temperature; and contacting the first material with a second material comprising at least one fiber to form a composition comprising the first material and the second material; wherein the first temperature is higher than or equal to a glass transition temperature (T g ) of the amorphous alloy.

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Номер записи: 73

06-02-2014 дата публикации

FLAME RETARDANT CELLULOSIC MAN-MADE FIBERS

Номер: US20140037933A1

Автор: Bisjack Clemens, Kroner Gert, Rüt Hartmut

Принадлежит: Lenzing AG

The invention relates to flame-retardant cellulosic man-made fibers containing a flame-retardant substance in the form of an oxidized condensate of a tetrakis hydroxyalkyl phosphonium salt with ammonia and/or a nitrogenous compound which contains one or several amine groups whereby the fiber has a tenacity of more than 18 cN/tex in a conditioned state. Production process and the use of the fibers according to the invention are further objects of the invention. 1. A flame-retardant cellulosic man-made fiber containing a flame-retardant substance in the form of an oxidized condensate of a tetrakis hydroxyalkyl phosphonium salt with ammonia and/or a nitrogenous compound which contains one or several groups of amine groups , wherein the fiber has a strength of more than 18 cN/tex in a conditioned state.2. The flame-retardant cellulosic man-made fiber according to claim 1 , wherein the nitrogenous compound is selected from the group consisting of urea claim 1 , ammonia claim 1 , thiourea claim 1 , biuret claim 1 , melamine claim 1 , ethylene urea claim 1 , guanidine and 2-cyanoguanidine.3. The flame-retardant cellulosic man-made fiber according to claim 1 , wherein the tetrakis hydroxyalkyl phosphonium salt is a tetrakis hydroxymethyl phosphonium salt.4. The flame-retardant cellulosic man-made fiber according to claims 1 , wherein the fiber is a viscose or modal fiber.5. The flame-retardant cellulosic man-made fiber according to claim 1 , wherein the cellulosic man-made fiber is a cupro or carbamate fiber.6. The flame-retardant cellulosic man-made fiber according to claim 1 , wherein the fiber is a lyocell fiber.7. The flame-retardant cellulosic man-made fiber according to claim 1 , wherein the share of flame-retardant substance in the cellulose fiber is between 5 and 50 weight percent.8. The flame-retardant cellulosic man-made fiber according to claim 1 , wherein the tenacity is from 18 cN/tex to 50 cN/tex.9. The flame-retardant cellulosic man-made fiber according to ...

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Номер записи: 74

06-02-2014 дата публикации

FIBERS AND FIBER SPINNERETS

Номер: US20140037957A1

Автор: Lindsey Mike, Peters Richard, Warren Dave

Принадлежит: SABIC INNOVATIVE PLASTICS IP B.V.

A method including the steps of extruding a melt including an amorphous polymer composition through a spinneret under a pressure of from 400 to 1500 psi to produce a spun fiber; collecting the spun fiber on a feeding roll without drawing the spun fiber; producing a solidified fiber from the spun fiber. The solidified fiber can have a dpf within a range of from greater than 0 to 2.5 dpf, and a shrinkage less than or equal to 2%. The method can also include collecting the solidified fiber onto a spool without subjecting the solidified fiber to a drawing step. A spinneret for producing fibers of at most 2.5 dpf from a composition comprising an amorphous polyetherimide polymer, the spinneret comprising a die having a plurality of round melt channels but no distribution plates. Fibers produced by the method and from the spinneret are also disclosed. 1. A method comprising: 'wherein the melt comprises an amorphous polymer composition;', 'extruding a melt through a spinneret under a pressure of from 400 to 1500 psi to produce a spun fiber,'} wherein the solidified fiber has a dpf within a range of from greater than 0 to 2.5 dpf,', 'wherein the solidified fiber has a shrinkage less than or equal to 2%; and, 'collecting the spun fiber on a feeding roll without drawing the spun fiber, producing a solidified fiber from the spun fiber,'}winding the solidified fiber onto a spool without subjecting the solidified fiber to a drawing step.2. The method according to claim 1 , wherein the amorphous polymer composition has a melt flow rate of from 4 to 18 g/10-min.3. The method according to claim 1 , wherein the pressure is from 400 to 1000 psi.4. The method according to claim 1 , further comprising collecting the fiber onto the spool without an annealing step.5. The method according to claim 1 , wherein the solidified fiber is produced without a forced-air cooling step.6. The method according to claim 1 , wherein the process further comprises heating the spun fiber after it exits the ...

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Номер записи: 75

20-02-2014 дата публикации

Ion conducting nanofiber fuel cell electrodes

Номер: US20140051013A1

Автор: Francis W. Richey, Kevin H. Wujcik, Yossef A. Elabd

Принадлежит: DREXEL UNIVERSITY

The present invention is directed to methods of making a nanofiber-nanoparticle network to be used as electrodes of fuel cells. The method comprises electrospinning a polymer-containing material on a substrate to form nanofibers and electrospraying a catalyst-containing material on the nanofibers on the same substrate. The nanofiber-nanoparticle network made by the methods is suitable for use as electrodes in fuel cells.

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Номер записи: 76

20-02-2014 дата публикации

CENTRIFUGAL ELECTROSPINNING APPARATUS AND METHODS AND FIBROUS STRUCTURES PRODUCED THEREFROM

Номер: US20140051316A1

Автор: Cooper Ashleigh, Edmondson Dennis, Zhang Miqin

Принадлежит: University of Washington through its Center for Commercialization

A centrifugal electrospinning apparatus, centrifugal electrospinning method for the production of fibrous structures, and electrospun fibrous structures are provided. 1. An electrospinning apparatus , comprising:(a) a nozzle configured to expel an electrospinning solution through a conductive tip to produce electrospun fibers;(b) a rotator configured to rotate the tip through a rotation plane; and(c) a plurality of deposition electrodes arranged in the rotation plane and configured to receive the electrospun fibers.2. (canceled)3. The electrospinning apparatus of claim 1 , wherein the plurality of deposition electrodes are grounded.4. (canceled)5. The electrospinning apparatus of claim 1 , wherein the plurality of deposition electrodes are arranged concentrically around the rotator.6. The electrospinning apparatus of claim 1 , wherein the plurality of deposition electrodes are separated by insulating gaps.711-. (canceled)12. A method for making a fibrous structure claim 1 , comprising;(a) expelling an electrospinning solution through a rotating conductive tip to produce electrospun fibers, wherein the tip rotates through a rotation plane; and(b) receiving the electrospun fibers on a plurality of deposition electrodes arranged in the rotation plane to provide a fibrous structure.13. The method of claim 12 , wherein the electrospinning solution comprises a synthetic or natural polymer.14. (canceled)15. The method of claim 14 , wherein the synthetic polymer is selected from the group consisting of polyvinylidene fluoride claim 14 , polyethylene claim 14 , polyvinyl alcohol claim 14 , nylon6 claim 14 ,6 claim 14 , polyurethane claim 14 , polycarbonate claim 14 , polyacrylonitrile claim 14 , polymethacrylate claim 14 , polyethylene oxide claim 14 , polystyrene claim 14 , polyamide claim 14 , polymethacrylate claim 14 , polycaprolactone claim 14 , poly(lactic-co-glycolic acid) claim 14 , and mixtures thereof.16. The method of claim 14 , wherein the natural polymer is ...

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Номер записи: 77

27-02-2014 дата публикации

Electrospinning process for making a textile suitable for use as a medical article

Номер: US20140054828A9

Автор: Martin J. Bide, Matthew D. Phaneuf, Philip J. Brown

Принадлежит: Biosurfaces Inc, Clemson University, Rhode Island Board of Education

The present invention is a bioactive, nanofibrous material construct which is manufactured using a unique electrospinning perfusion methodology. One embodiment provides a nanofibrous biocomposite material formed as a discrete textile fabric from a prepared liquid admixture of (i) a non-biodegradable durable synthetic polymer; (ii) a biologically active agent; and (iii) a liquid organic carrier. These biologically-active agents are chemical compounds which retain their recognized biological activity both before and after becoming non-permanently bound to the formed textile material; and will become subsequently released in-situ as discrete freely mobile agents from the fabric upon uptake of water from the ambient environment.

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Номер записи: 78

06-03-2014 дата публикации

METHOD AND DEVICE FOR APPLICATION OF LIQUID POLYMERIC MATERIAL ONTO SPINNING CORDS

Номер: US20140061959A1

Автор: Bittner Michal, Cmelik Jan, Hanusova Lenka, Krenek Radim, Maly Miroslav, Mares Ladislav, Nydrle Milan, Podany Martin, Sejak Pavel, Stromsky Vit

Принадлежит:

The present disclosure relates to a method and a device for application of liquid polymeric material onto the active spinning zone of the cord of the spinning member of the spinning electrode, where the application means moving reversibly along the active spinning zone of the cord in the device for production of nanofibres through electrostatic spinning of liquid material in electrostatic field of high intensity between at least one spinning electrode and against it arranged collecting electrode. The liquid polymeric material is applied onto the cord around its whole circumference without any contact with gaseous environment in the spinning space, where the application means reversibly moves, whereas while the cord is leaving the application means the thickness of the layer of the liquid polymeric material is being reduced and immediately after leaving the application means the process of electrostatic spinning of the liquid polymeric material applied on the cord is started. 1. Method for application of liquid polymeric material onto the active spinning zone of a cord of a spinning member of a spinning electrode by an application means moving reversibly along the active spinning zone of the cord in a device for production of nanofibres through electrostatic spinning of liquid material in electrostatic field of high intensity between at least one spinning electrode and against it arranged collecting electrode , wherein the liquid polymeric material is applied onto the cord around its whole circumference without any contact with gaseous environment in the spinning space , where the application means reversibly moves , whereas while the cord is leaving the application means the thickness of the layer of the liquid polymeric material on the cord is being reduced and immediately after leaving the application means the process of electrostatic spinning of the liquid polymeric material applied on the cord is started.2. The method according to claim 1 , wherein the ...

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Номер записи: 79

06-03-2014 дата публикации

STRETCHABLE CONDUCTIVE NANOFIBERS AND METHODS OF PRODUCING THE SAME

Номер: US20140065422A1

Автор: KIM Sang-won, Park Jong-jin, SHIN Kwan-woo, SUNG Bong-june

Принадлежит:

A stretchable conductive nanofiber includes a polymer nanofiber, and one-dimensional conductive nanoparticles that form a percolation network within the polymer nanofiber, and are oriented at an angle in a range of about 0° to about 45° with a respect to an axis of the polymer nanofiber. 1. A stretchable conductive nanofiber comprising:a polymer nanofiber; andone-dimensional conductive nanoparticles that form a percolation network within the polymer nanofiber, and are oriented at an angle in a range of from about 0° to about 45° with a respect to an axis of the polymer nanofiber.2. The stretchable conductive nanofiber according to claim 1 , wherein the polymer nanofiber comprises polyurethane (PU) claim 1 , polyvinyl alcohol (PVA) claim 1 , polyethylene oxide (PEO) claim 1 , nylon claim 1 , polyacrylonitrile (PAN) claim 1 , polydimethylsiloxane (PDMS) claim 1 , low-density polyethylene (LDPE) claim 1 , polymethyl methacrylate (PMMA) claim 1 , or a mixture thereof.3. The stretchable conductive nanofiber according to claim 1 , wherein the polymer nanofiber has a diameter in a range of from about 50 nm to about 1 μm.4. The stretchable conductive nanofiber according to claim 1 , wherein the one-dimensional conductive particles comprise a carbon-based material claim 1 , an inorganic material claim 1 , or a mixture thereof.5. The stretchable conductive nanofiber according to claim 4 , wherein the carbon-based material comprises a carbon nanotube or a carbon nanofiber.6. The stretchable conductive nanofiber according to claim 5 , wherein the carbon nanotube is selected from the group consisting of a single-walled nanotube (SWNT) claim 5 , a double-walled nanotube (DWNT) claim 5 , and a multi-walled nanotube (MWNT).7. The stretchable conductive nanofiber according to claim 4 , wherein the inorganic material comprises a metal nanowire or a metal nanorod.8. The stretchable conductive nanofiber according to claim 7 , wherein the metal nanowire or the metal nanorod comprises ...

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Номер записи: 80

27-03-2014 дата публикации

APPARATUS, SYSTEMS AND METHODS FOR PRODUCING PARTICLES USING ROTATING CAPILLARIES

Номер: US20140087169A1

Автор: Koslow Evan E.

Принадлежит:

An apparatus for forming particles from a liquid, including a rotor assembly having at least one surface sized and shaped so as to define at least one capillary. Each capillary has an inner region adjacent an axis of rotation of the rotor assembly, an outer region distal from the axis of rotation, and an edge adjacent the outer region. The rotor assembly is configured to be rotated at an angular velocity selected such that when the liquid is received in the inner region of the at least one capillary, the liquid will move from the inner region to the outer region, adopt an unsaturated condition on the at least one surface such that the liquid flows as a film along the at least one surface and does not continuously span the capillary, and, upon reaching the edge, separates from the at least one surface to form at least one particle. 126.-. (canceled)27. A method for forming particles , comprising the steps of:a. providing at least one surface sized and shaped so as to define at least one capillary, said capillary having an inner region, an outer region, and an edge;b. providing a liquid to the inner region of the at least one capillary; andc. rotating the capillary at an angular velocity selected such that the liquid will move from the inner region to the outer region, adopt an unsaturated condition on the at least one surface such that the liquid flows as a film along the at least one surface and does not continuously span the capillary, and, upon reaching the edge, separates from the at least one surface to form at least one particle.2854.-. (canceled)55. The method of claim 27 , wherein the particles are droplets.56. The method of claim 55 , further comprising the step of mixing the droplets with at least one gas.57. (canceled)58. The method of claim 56 , wherein the liquid includes a fuel and the gas includes oxygen claim 56 , and further comprising the step of igniting the mixture in a combustion chamber.5975.-. (canceled)76. A method for emulsifying at least two ...

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Номер записи: 81

27-03-2014 дата публикации

Composite anode active material, anode and lithium battery each including the composite anode active material, method of preparing the composite anode active material

Номер: US20140087255A1

Автор: Hyung-wook HA, Jin-Hwan Park, Jong-Jin Park, Sang-Won Kim

Принадлежит: SAMSUNG ELECTRONICS CO LTD

A composite anode active material, an anode including the composite anode active material, a lithium battery including the anode, and a method of preparing the composite anode active material. The composite anode active material includes: a shell including a hollow carbon fiber; and a core disposed in a hollow of the hollow carbon fiber, wherein the core includes a first metal nanostructure and a conducting agent.

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Номер записи: 82

27-03-2014 дата публикации

Biodegradable polyester fiber having excellent thermal stability and strength, and method for producing same

Номер: US20140088288A1

Автор: Chizuru Hongo, Masanobu Tamura, Tadahisa Iwata

Принадлежит: Kaneka Corp, University of Tokyo NUC

The present invention aims to provide biodegradable polyester fibers excellent in thermal stability and fiber strength. Another aim is to provide a method for producing biodegradable polyester fibers excellent in mechanical properties, particularly in thermal stability. The present invention relates to biodegradable polyester fibers comprising a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) that has a 3HH molar fraction of 2 to 9 mol %. The present invention also relates to a method for producing the biodegradable polyester fibers, comprising a fiber forming step of melt-extruding a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) to form fibers at a temperature higher than or equal to the glass transition temperature of the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) but not higher than 70° C.

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Номер записи: 83

03-04-2014 дата публикации

Carbon fiber material, carbon fiber material manufacturing method, and material containing the carbon fiber material

Номер: US20140091033A1

Автор: Takahiro Kitano

Принадлежит: Tec One Co Ltd

The object of the present invention is to provide carbon fiber material having high electrical conductivity at a low cost. A manufacturing method of carbon fiber material comprises a dispersion liquid preparation step, a centrifugal spinning step and a denaturation step. The dispersion liquid preparation step is a step in which dispersion liquid containing resin and carbon particles is prepared. The centrifugal spinning step is a step in which nonwoven fabric made of a carbon fiber precursor is formed from the dispersion liquid. The denaturation step is a step in which the carbon fiber precursor denatures into carbon fiber.

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Номер записи: 84

03-04-2014 дата публикации

Composite fiber having a high surface area and flexibility and method for manufacturing the same, and substrate containing the composite fiber and method for manufacturing the same

Номер: US20140094078A1

Автор: Chih-Yi Lin, Chung-Chih Feng, Kao-Lung Yang

Принадлежит: San Fang Chemical Industry Co Ltd

The present invention provides a composite fiber having a high surface area and flexibility and a method for manufacturing the same, and a substrate containing the composite fiber and a method for manufacturing the same. The composite fiber contains a first component and a second component, and has a maximum diameter and a circumference. The first component has a central portion and a plurality of extension portions. A maximum length of the central portion is less than three quarters of the maximum diameter. The first component is in an amount of 50 wt % to 95 wt %, based on the total weight of the composite fiber. The second component has a plurality of outer portions disposed between two extension portions, and the second component is in an amount of 5 wt % to 50 wt %, based on the total weight of the composite fiber.

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Номер записи: 85

03-04-2014 дата публикации

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

Номер: US20140094551A1

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. 1. A method of forming particles , comprising:a. 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; thenb. dielectrically spinning the pre-particles in an electrostatic field to further attenuate the pre-particles and form the particles.2. The method of claim 1 , wherein the strong force attenuation includes mechanically attenuating the mixture.3. (canceled)4. (canceled)5. The method of claim 1 , wherein the base compound is a polymer.6. The method of claim 5 , further comprising melting the polymer to form a liquid polymer melt claim 5 , then dielectrically spinning the liquid polymer melt to form polymer particles.7. The method of claim 1 , wherein the mixture includes a dispersant selected to encourage the dielectric additive to disperse within the base compound.8. (canceled)9. (canceled)10. A composition for particle formation claim 1 , comprising:a base compound; anda dielectric additive selected to encourage dielectrophoretic attenuation of the base compound during dielectric spinning.11. The composition of claim 10 , wherein the dielectric additive includes a mild dielectric additive having a dielectric constant above 5.12. (canceled)13. (canceled)14. The composition of claim 10 , wherein the dielectric additive includes polyglycerol-3.15. The composition of claim 10 , wherein the dielectric additive includes titanium dioxide (TiO).16. The composition of claim 10 , wherein the dielectric additive includes barium titanate.17. (canceled)18. (canceled ...

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Номер записи: 86

10-04-2014 дата публикации

SOYBEAN BASED FIBERS

Номер: US20140100351A1

Автор: Ellison Christopher J., Janes Dustin W.

Принадлежит: Board of Regents of the University of Texas System

Fibers can be formed from monomers derived from a biorenewable source. In an embodiment, a fiber forming composition that includes a monomer or mixture of monomers with at least one monomer being derived from a biorenewable source in placed in a fiber producing device. At least a portion of the fiber forming composition is ejected through an opening of the fiber forming device. The ejected fiber forming composition is subjected to light at wavelengths sufficient to activate a reaction which causes solidification of the fiber as the fibers are ejected from the fiber producing device. 1. A method of forming fibers , comprising:placing a fiber forming composition in a fiber producing device, the fiber forming composition comprising a monomer or mixture of monomers with at least one monomer being derived from a biorenewable source;ejecting at least a portion of the fiber forming composition through an opening of the fiber forming device; andsubjecting the ejected fiber forming composition to light at wavelengths sufficient to activate a reaction which causes solidification of the fiber as the fibers are ejected from the fiber producing device.2. The method of claim 1 , wherein the at least one monomer being derived from a biorenewable source is an acrylated vegetable oil.3. The method of claim 1 , wherein the fiber producing device is an electrospinning device.4. The method of claim 1 , wherein the fiber producing device is a melt blowing device.5. The method of claim 1 , wherein the fiber producing device is a centrifugal spinning device.6. The method of claim 1 , wherein the fiber producing device is a fiber drawing device.7. The method of claim 1 , wherein the fiber forming composition comprises at least 50% by weight of a monomer derived from a biorenewable source.8. The method of claim 1 , wherein the monomer derived from a biorenewable source comprises acrylated epoxidized soybean oil.9. The method of claim 1 , wherein the monomer derived from a biorenewable ...

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Номер записи: 87

02-01-2020 дата публикации

BIOMEDICAL PATCHES WITH ALIGNED FIBERS

Номер: US20200000570A1

Автор: MacEwan Matthew R., Ray Zack, Xia Younan, Xie Jingwei

Принадлежит:

A three-dimensional electrospun nanofiber scaffold for use in repairing a defect in a tissue substrate is provided. The scaffold includes a flexible deposited fiber network of varying density including a first and second set of set of electrospun fibers. The second set of electrospun fibers is coupled to the first. A first portion of the flexible deposited fiber network includes a higher density of fibers than a second portion of the flexible deposited fiber network, and the tensile strength of first portion is higher than that of the second portion. The scaffold is sufficiently flexible to facilitate application of scaffold to uneven surfaces of the tissue substrate, and enables movement of the scaffold by the tissue substrate. The first and second set of fibers are configured to degrade within three months after application, and each fiber of the deposited fiber network has a diameter of 1-1000 nanometers. 1. A three-dimensional electrospun nanofiber scaffold for use in repairing a defect in a tissue substrate , the three-dimensional electrospun nanofiber scaffold comprising: a first set of electrospun fibers comprising a first bioresorbable polymer, wherein the first bioresorbable polymer comprises polyglycolic acid; and', 'a second set of electrospun fibers comprising a second bioresorbable polymer, the second set of fibers coupled to the first set of fibers,', 'wherein the first bioresorbable polymer comprises a different composition from the second bioresorbable polymer,, 'a flexible deposited fiber network of varying density, the deposited fiber network comprisingwherein a first portion of the flexible deposited fiber network comprises a higher density of fibers than a second portion of the flexible deposited fiber network, and wherein the first portion comprises a higher tensile strength than the second portion;wherein the three-dimensional electrospun nanofiber scaffold is sufficiently flexible to facilitate application of the three-dimensional electrospun ...

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Номер записи: 88

07-01-2021 дата публикации

BIOMEDICAL PATCHES WITH SPATIALLY ARRANGED FIBERS

Номер: US20210001014A1

Автор: MacEwan Matthew R.

Принадлежит:

A three-dimensional electrospun nanofiber scaffold for use in repairing a defect in a tissue substrate is provided. The three-dimensional electrospun nanofiber scaffold includes a first layer formed by a first plurality of electrospun polymeric fibers and a second layer formed by a second plurality of electrospun polymeric fibers. The second layer is coupled to the first layer using a coupling process and includes a plurality of varying densities formed by the second plurality of electrospun polymeric fibers. The first and second layers are configured to degrade via hydrolysis after at least one of a predetermined time or an environmental condition. The three-dimensional electrospun nanofiber scaffold is configured to be applied to the tissue substrate containing the defect. 120-. (canceled)21. A three-dimensional electrospun nanofiber scaffold for facilitating tissue repair , the three-dimensional electrospun nanofiber scaffold comprising:a first plurality of deposited electrospun polymeric nanofibers; anda second plurality of deposited electrospun polymeric nanofibers,the second plurality of deposited electrospun polymeric nanofibers being coupled to the first plurality of electrospun polymeric nanofibers,wherein at least some of the second plurality of deposited electrospun polymeric nanofibers are deposited over a portion of the first plurality of electrospun polymeric nanofibers to form one or more regions comprising a spatial variation between fibers on an outer surface of the three-dimensional electrospun nanofiber scaffold that is different from one or more other regions not on the outer surface of the three-dimensional electrospun nanofiber scaffold,wherein at least some of the second plurality of deposited electrospun polymeric nanofibers are commingled with the first plurality of electrospun polymeric nanofibers within the first portion,the three-dimensional electrospun nanofiber scaffold further comprising a surface, the surface comprising a surface ...

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Номер записи: 89

02-01-2020 дата публикации

IONIC LIQUIDS THAT STERILIZE AND PREVENT BIOFILM FORMATION IN SKIN WOUND HEALING DEVICES

Номер: US20200000960A1

Автор: Del Sesto Rico, Kellar Robert, Koppisch Andrew, Nieto Nathan Christopher

Принадлежит:

Compositions for enhancing wound healing are disclosed herein. Also disclosed are methods of making the compositions and methods of using the compositions for the prevention of biofilm formation and for the inhibition of pathogen growth and proliferation. 1. A wound care composition , comprising:an ionic liquid (IL) and a neutral species, wherein the ionic liquid is present in an amount of about 0.01% w/w to about 99% w/w; anda protein scaffold comprising a protein solution.2. The wound care composition of claim 1 , wherein the IL is choline geranate (CAGE) or choline citronellate.3. The wound care composition of claim 1 , wherein the wound care composition is incorporated with or impregnated into or coated onto a wound dressing claim 1 , a bandage claim 1 , a gauze claim 1 , a patch claim 1 , a pad claim 1 , tape claim 1 , or a wrap.4. The wound care composition of claim 1 , wherein the ionic liquid is present in an amount of about 40% w/w.5. The wound care composition of claim 1 , wherein the protein solution comprises collagen claim 1 , albumin claim 1 , casein claim 1 , fibrin claim 1 , fibroin claim 1 , gelatin claim 1 , keratin claim 1 , elastin claim 1 , tropoelastin claim 1 , or combinations thereof.6. The wound care composition of claim 1 , wherein the protein scaffold is electrospun.7. The wound care composition of claim 1 , wherein the protein solution is present in an amount of about 1% w/v to about 20% w/v.8. The wound care composition of claim 1 , wherein the protein scaffold is present in an amount of about 10% w/v.9. The wound care composition of claim 1 , comprising IL in an amount of about 0.2% w/w and gelatin in an amount of about 10% w/v gelatin.10. The wound care composition of claim 1 , wherein the neutral species comprises farnesol claim 1 , linalool claim 1 , carvacrol claim 1 , geranic acid claim 1 , citronellic acid claim 1 , cinnamaldehyde claim 1 , eugenol claim 1 , or combinations thereof.11. The wound care composition of claim 1 , ...

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Номер записи: 90

06-01-2022 дата публикации

METHOD OF MAKING FINE SPUNBOND FIBER NONWOVEN FABRICS AT HIGH THROUGH-PUTS

Номер: US20220002909A1

Автор: CONRAD John H., Lennon Eric E.

Принадлежит:

Spunbond fiber nonwoven webs (and methods for making the same) comprising small diameter filaments at high rates of production and with high process stability. 1. A method of making spunbond fiber nonwoven fabrics comprising:providing a spinneret having a length, a width and a thickness and further having a plurality of conduits extending through the thickness of the spinneret, said conduits having an inlet opening in an upper surface of the spinneret and an exit orifice in a lower surface of the spinneret and further having a capillary in fluid communication with said inlet opening and exit orifice, and wherein said exit orifices have an average diameter of between about 0.2 and about 0.45 mm;melting an extrudate composition having a polymeric portion and wherein the polymeric portion comprises at least 65% of an olefin polymer;directing a pressurized molten stream of the extrudate composition into the inlet openings of the spinneret and through the capillaries,extruding said molten stream of the extrudate composition out of said exit orifices at a rate of at least 0.3 g/orifice/minute and forming a bundle of molten filaments;directing a stream of quench air onto said bundle of molten filaments thereby at least partially solidifying said molten filaments to form a bundle of quenched filaments;pneumatically drawing said quenched filaments downwardly through a drawing channel and forming a bundle of drawn filaments, said drawing channel having an upper opening and lower opening, and wherein the filaments are drawn to achieve a draw ratio of less than about 1100;providing a foraminous forming surface below the lower opening of the drawing channel and suctioning air exiting from the lower opening of the drawing channel through said forming surface;suctioning said bundle of drawn filaments onto the foraminous forming surface to form a nonwoven batt, wherein the drawn filaments deposited on the forming surface forming the nonwoven batt have an average fiber diameter of ...

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Номер записи: 91

06-01-2022 дата публикации

Shaped Nonwoven

Номер: US20220002910A1

Автор: ARORA Kelyn Anne, Ashraf Arman, Weisman Paul Thomas, Whitely Nathan Ray

Принадлежит:

A nonwoven fabric. The nonwoven fabric can include a first surface and a second surface and a visually discernible pattern of three-dimensional features on one of the first or second surface. Each of the three-dimensional features can define a microzone comprising a first region and a second region. The first and second regions can have a difference in values for an intensive property. The nonwoven further has a plurality of apertures, wherein at least a portion of the aperture abuts at least one of the first region and the second region of the microzone. 1. A nonwoven fabric comprising a first surface , a second surface , and at least first and second visually discernible zones on one of the first or second surface , each of the first and second zones having a visually different pattern of three-dimensional features that each comprise at least two distinct three-dimensional features , each of the patterns of three-dimensional features defining a microzone comprising a first region and a second region that correspond to the at least two distinct three-dimensional features , wherein the difference in values for an intensive property for the first region and the second region of the microzone in the first zone is different than the difference in values for the intensive property for the first region and the second region of the microzone in the second zone , wherein the intensive property is one or more of:a. thickness,b. basis weight,c. volumetric density; andwherein the first surface has a first TS7 value, wherein the second surface has a second TS7 value, and wherein the first TS7 value is different than the second TS7 value.2. The nonwoven fabric of claim 1 , wherein the first TS7 value is in the range of about 3 to about 14 dB V2 rms.3. The nonwoven fabric of claim 1 , wherein the second TS7 value is in the range of about 2 dB V2 rms to about 12 dB V2 rms.4. The nonwoven fabric of claim 1 , wherein the intensive property is thickness claim 1 , and wherein the ...

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Номер записи: 92

04-01-2018 дата публикации

Shaving Aid For Razor Cartridges Comprising A Nano-Filament Comprising A Core And Sheath

Номер: US20180001494A1

Автор: Calderas Jonathan Javier, Edwards Joseph Bryan, GLASSMEYER Stephen Robert, Humphreys Claire Patricia, Mao Min, Moloney Michael John, Pratt Michael Sean, Romo Escalante Eduardo, Spooner-Fleming Joia Kirin, STEPHENS Alison Fiona

Принадлежит:

A shaving aid for razor cartridges comprising water soluble filaments having nano-sized diameters and exhibiting lubricating properties and with improved visual and tactile aesthetics, wherein said nano-filament has a core and a sheath. 1. A razor cartridge comprisinga housing a shaving surface;at least one blade having a blade tip positioned at said shaving surface; anda shaving aid positioned on said housing to expose skin contacting portion of said shaving aid on said shaving surface, said shaving aid comprising a co-axial filament having a diameter of from about 10 nm to about 1000 nm, wherein said co-axial filament comprises a core and a sheath.2. The razor cartridge of claim 1 , wherein said core comprises a water insoluble polymer.3. The razor cartridge of claim 1 , wherein said sheath comprises a water soluble-polymer.4. The razor cartridge of claim 2 , wherein said sheath comprises a water-soluble polymer.5. The razor cartridge of claim 1 , wherein said core has a diameter of from about 90 nm to about 900 nm.6. The razor cartridge of claim 1 , wherein said sheath has a diameter of from about 100 nm to 1000 nm.7. The razor cartridge of claim 1 , wherein said co-axial filament has an average diameter of from about 300 nm to about 600 nm.8. The razor cartridge of claim 1 , further comprising a second filament.9. The razor cartridge of claim 1 , wherein said shaving aid comprises at least 0.01% by weight of a plurality of said co-axial filaments.10. The razor cartridge of claim 1 , wherein at least a portion of said skin contacting portion has a surface coating claim 1 , said surface coating comprising said co-axial filament.11. The razor cartridge of claim 10 , wherein at least 50% of the skin contacting portion claim 10 , by surface area is covered by said surface coating.12. The razor cartridge of claim 3 , wherein said water soluble polymer is selected from polyvinylalcohol claim 3 , quaternary ammonium polymer claim 3 , polyethylene glycol claim 3 , ...

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Номер записи: 93

04-01-2018 дата публикации

Shaving Aid For Razor Cartridges Comprising A Nano-Filament

Номер: US20180001495A1

Автор: Calderas Jonathan Javier, Edwards Joseph Bryan, GLASSMEYER Stephen Robert, Humphreys Claire Patricia, Mao Min, Moloney Michael John, Pratt Michael Sean, Romo Escalante Eduardo, Spooner-Fleming Joia Kirin, STEPHENS Alison Fiona

Принадлежит:

A shaving aid for razor cartridges comprising water soluble filaments having nano-sized diameters and exhibiting lubricating properties and with improved visual and tactile aesthetics. 1. A razor cartridge comprisinga. a housing a shaving surface;b. at least one blade having a blade tip positioned at said shaving surface; andc. a shaving aid positioned on said housing to expose skin contacting portion of said shaving aid on said shaving surface, said shaving aid comprising a nano-filament having a diameter of from about 10 nm to about 1000 nm.2. The razor cartridge of claim 1 , wherein said shaving aid comprises a nano-filament average diameter of from about 300 nm to about 600 nm.3. The razor cartridge of claim 1 , wherein said shaving aid comprises at least 0.01% by weight of said nano-filaments.4. The razor cartridge of claim 1 , wherein said nano-filaments forms a nonwoven web.5. The razor cartridge of claim 1 , wherein said nano-filament has a span of at least 30 um between intersections with other nano-filaments in the shaving aid.6. The razor cartridge of claim 5 , wherein said nonwoven web has a thickness of from about 0.01 mm to about 5 mm. In one embodiment claim 5 , the shaving aid comprises a plurality of nonwoven webs.7. The razor cartridge of claim 1 , wherein at least a portion of said skin contacting portion has a surface coating claim 1 , said surface coating comprising said nano-filament.8. The razor cartridge of claim 7 , wherein at least 50% of the skin contacting portion claim 7 , by surface area is covered by said surface coating.9. The razor cartridge of claim 7 , wherein said surface coating comprises more than one layer.10. The razor cartridge of claim 7 , wherein said surface coating has a thickness of from about 0.01 mm to about 20 mm.11. The razor cartridge of claim 1 , further comprising a second nano-filament.12. The razor cartridge of claim 11 , wherein said second nano-filament is not water soluble.13. The razor cartridge of claim 1 , ...

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Номер записи: 94

03-01-2019 дата публикации

Biobased Carbon Fibers and Carbon Black and Methods of Making the Same

Номер: US20190002293A1

Автор: Lee Han, Munsterman Herb, Sookraj Sadesh

Принадлежит: NOVOMER, INC.

Bio-based materials, e.g., epoxide starting material, a beta-lactone starting material and/or a beta-hydroxy amide starting material, may be used as feedstocks in processes for making and using acrylonitrile and acrylonitrile derivatives to produce, among other products, carbon fibers and carbon black. 1. A method of producing a carbon fiber material , the method comprising:a. affording acrylonitrile from at least one of an epoxide or carbon monoxide starting material that is derived from a bio-based and/or renewable source;b. polymerizing the acrylonitrile to produce a polyacrylonitrile precursor;c. thermally stabilizing the polyacrylonitrile precursor to afford thermally stabilized carbon fibers; andd. carbonizing the thermally stabilized carbon fibers to produce the carbon fiber material.2. The method from claim 1 , wherein the acrylonitrile is produced by a process comprising:a. introducing the at least one of bio-based and/or renewable sourced epoxide and carbon monoxide starting materials to at least one reaction vessel through at least one feed stream inlet;b. contacting the at least one of bio-based and/or renewable sourced epoxide and carbon monoxide starting materials with a carbonylation catalyst in the at least one reaction vessel to produce a beta-lactone intermediate;c. contacting the beta-lactone intermediate with a heterogenous catalyst to produce an organic acid intermediate; andd. reacting the organic acid product with an ammonia reagent under ammoxidation conditions in the at least one reaction vessel to produce the acrylonitrile product.3. The method from claim 1 , wherein the polyacrylonitrile precursor comprises polyacrylonitrile fibers produced by wet or dry-jet-wet spinning of an acrylonitrile monomer or copolymer.4. The method from claim 1 , wherein polyacrylonitrile precursor is thermally stabilized by controlled low-temperature heating over the range 200-300° C. in air.5. The method from claim 1 , wherein the carbon fiber material is ...

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Номер записи: 95

07-01-2016 дата публикации

Electrospinning of ptfe with high viscosity materials

Номер: US20160002430A1

Автор: Bruce L. Anneaux, David P. Garner, Robert L. Ballard

Принадлежит: Zeus Industrial Products Inc

An improved process for forming a PTFE mat is described. The process includes providing a dispersion with PTFE, a fiberizing polymer and a solvent wherein said dispersion has a viscosity of at least 50,000 cP. An apparatus is provided which comprises a charge source and a target a distance from the charge source. A voltage source is provided which creates a first charge at the charge source and an opposing charge at the target. The dispersion is electrostatically charged by contact with the charge source. The electrostatically charged dispersion is collected on the target to form a mat precursor which is heated to remove the solvent and the fiberizing polymer thereby forming the PTFE mat.

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Номер записи: 96

05-01-2017 дата публикации

METHOD OF ATTACHING A CELL-OF-INTEREST TO A MICROTUBE

Номер: US20170002343A1

Автор: GREEN Michal, KLEIN Shiri, KUHN Jonathan Charles, ZUSSMAN Eyal

Принадлежит:

A method of attaching a cell or a membrane-coated particle-of-interest to a microtube is provided. The method comprising: 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 wherein the second polymeric solution comprises the cell or the membrane-coated particle-of-interest, thereby attaching the cell or the membrane-coated particle-of-interest to the microtube. Also provided are microtubes with attached, entrapped or encapsulated cells or membrane-coated particles and methods of using same 1. A microtube comprising:an electrospun shell,an electrospun coat polymer over an internal surface of said shell and a cell or membrane-coated particle-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.2. The microtube of claim 1 , wherein said polymer of said first polymeric solution and a polymer of said second polymeric solution are different.3. The microtube of claim 1 , wherein said electrospun shell comprises pores.4. The microtube of claim 1 , wherein said ...

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Номер записи: 97

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: 98

05-01-2017 дата публикации

Process of making polyacrylonitrile fibers

Номер: US20170002482A1

Автор: W. Kenneth Wilkinson

Принадлежит: International Fibers Ltd

A process for preparing a PANOX fiber comprising: obtaining an acrylonitrile copolymer, wherein the copolymer contains at least about 2% by weight itaconic acid comonomer; forming a spin dope from the copolymer; wet spinning the spin dope to obtain gelled filaments; contacting the gelled filaments with ammonia activator in an aqueous imbibation bath; bundling the gelled filaments to obtain a fiber; removing solvent from the fiber; drawing the fiber; densifying the fiber by heating the fiber up to about 400 degrees C. for a time of about 15 minutes in a rapid densification zone; and withdrawing a PANOX fiber from the densification zone.

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Номер записи: 99

05-01-2017 дата публикации

ENHANCED CO-FORMED MELTBLOWN FIBROUS WEB

Номер: US20170002486A1

Автор: BARNHOLTZ Steven Lee, Burt Adam James, Castillo Mario, Morison Pamela Marie

Принадлежит:

An enhanced, co-formed fibrous web structure is disclosed. The web structure may have a co-formed core layer sandwiched between two scrim layers. The core layer may be formed of a blend of cellulose pulp fibers and melt spun filaments. The scrim layers may be formed of melt spun filaments. Filaments of one or both of the scrim layers, and optionally the core layer, may also be meltblown filaments. The core layer may include consolidated masses of cellulose pulp fibers to, for example, enhance texture and cleaning efficacy of a wet wipe made from the structure. The material forming the consolidated masses may be selected and/or processed so as to cause the masses to have reduced visual discernibility relative the surrounding areas of the structure, when the fibrous web structure is wetted. A method for forming the structure, including formation and inclusion of the consolidated masses, is also disclosed. 1. A method for manufacturing a fibrous web structure , comprising the steps of:melt spinning first polymer filaments and directing the first polymer filaments to a moving belt, thereby forming a first scrim layer of polymer filaments on the belt;defibrating first cellulose pulp dry lap sheets in a first defibrating apparatus, to produce first cellulose pulp fibers;incompletely defibrating second cellulose pulp dry lap sheets in the first defibrating apparatus or a second defibrating apparatus, to produce incompletely defibrated consolidated masses of second cellulose pulp fibers;entraining the first cellulose pulp fibers and the consolidated masses in an air stream;melt spinning second polymer filaments, blending the second polymer filaments with the first cellulose pulp fibers and the consolidated masses in a configuration of co-forming equipment, and directing the blend of second polymer filaments, first cellulose pulp fibers and consolidated masses at the belt and the first scrim layer, to form a core layer overlying the first scrim layer;downstream of the core ...

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Номер записи: 100