СПОСОБ И УСТРОЙСТВО ДЛЯ УДАЛЕНИЯ КОРОЛЬКА ИЗ МИНЕРАЛЬНОГО ВОЛОКНИСТОГО МАТЕРИАЛА

Изобретение относится к способу удаления королька из минеральных волокон. Технический результат изобретения заключается в увеличении количества удаляемого королька из получаемых волокон. Способ удаления королька из минеральных волокон включает получение собранного полотна минеральных волокон, содержащего королек, с последующим распутыванием собранного полотна волокон. Распутывание включает подачу собранного полотна на по меньшей мере один ролик, который вращается вокруг своей продольной оси и имеет острые шипы, выступающие из его периферической поверхности. Самые удаленные от центра точки ролика с шипами движутся со скоростью от 15 до 200 м/с. 2 н. и 15 з.п. ф-лы, 1 ил.

ТЕРМОСВЯЗЫВАЕМОЕ ГИДРОФИЛЬНОЕ ДВУХКОМПОНЕНТНОЕ ПОЛИОЛЕФИНОВОЕ ВОЛОКНО И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Использование: получение пушистых волокнистых гигиенических поглощающих материалов. Сущность изобретения: расплавляют два полиолефина, взятых в соотношении 30 : 70 - 70 : 30. Полиолефин ядра имеет более высокую температуру плавления, а в расплав компонента оболочки вводят 0,1 - 5,0% от массы сформованного волокна поверхностно-активного вещества. Элементы формуют в пучок, вытягивают и разрезают на отрезки длиной <35 мм. В качестве поверхностно-активного вещества может неионогенное, катионное, сложный эфир жирной кислоты и глицерина, амид жирной кислоты, полигликолевый амид. Двухкомпонентное термосвязываемое гидрофильное волокно имеет тонину 1 - 7 дтекс и может иметь до 4 извивов. 2 с. и 13 з.п. ф-лы, 4 табл., 4 ил.

СПОСОБ ФОРМОВАНИЯ ПЕРВИЧНОГО ПОЛОТНА МИНЕРАЛОВАТНОГО КОВРА И УСТРОЙСТВО ДЛЯ ОСУЩЕСТВЛЕНИЯ СПОСОБА

Изобретение относится к производству первичного полотна минераловатного ковра. В способе формования первичного полотна минераловатного ковра на подвижной проницаемой формовочной основе посредством переноса облака волоконной дисперсии из узла волокнообразования газовым потоком на эту основу, на участке осаждения волокна давление на обеих сторонах формовочной основы поддерживают практически одинаковым. Устройство для осуществления способа содержит узел волокнообразования с по край- ней мере одним отражательным колесом 6 для приема минерального расплава, расположенную в радиальном направлении относительно отражательного колеса частично окружающую его насадку 2, формовочную основу в виде сетки 8, средство для отсасывания газовых потоков через формовочную основу, средство для регулирования давления на обеих сторонах формовочной основы, а в узле волокнообразования смонтировано щелевое сопло 1 для подачи газового потока по касательной относительно отражательного колеса, и средство для регулирования ...

ФОРМОВОЧНАЯ ГОЛОВКА ДЛЯ СУХОГО ФОРМОВАНИЯ ВОЛОКНИСТОГО ПОЛОТНА

... 1. Формовочная головка (1, 25) для сухого формования волокнистого полотна, размещенная выше формовочной игольчатой ленты (8) напротив вытяжного блока (7), отличающаяся тем, что она разделена по меньшей мере на два распределительных блока (2, 3, 4, 5, 26, 27, 28, 29, 30, 31), установленных с возможностью съема в формовочной головке (1, 25), причем указанные по меньшей мере два распределительных блока размещены один сверху другого, и при этом каждый распределительный блок содержит по меньшей мере один вращающийся валок (11, 12, 13, 14, 15, 16, 17, 18, 19, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41) с выступающими зубцами (12). ! 2. Формовочная головка (1, 25) по п.1, отличающаяся тем, что распределительные блоки в формовочной головке находятся в сообщении друг с другом так, что верхний распределительный блок(и) (2) может передавать волокнистый материал к расположенному под ним распределительному блоку(ам) (3, 4, 5). ! 3. Формовочная головка (1, 25) по п.1 или 2, отличающаяся тем, что зубцы (12 ...

ИСКУССТВЕННАЯ ТВЕРДАЯ МОЗГОВАЯ ОБОЛОЧКА И СПОСОБ ЕЕ ПРОИЗВОДСТВА

... 1. Искусственная твердая мозговая оболочка, изготовленная из электропряденых слоев при помощи технологии электропрядения, при этом вышеупомянутый электропряденый слой состоит, по крайней мере, из гидрофобного электропряденого слоя.2. Оболочка по п.1, отличающаяся тем, что вышеупомянутый гидрофобный электропряденый слой изготовлен методом, включающим электропрядение с использованием одного или нескольких гидрофобных полимеров, выбранных из группы, состоящей из гидрофобного алифатического полиэфира, полиэфир-эфирного сополимера, полиортоэфира, полиуретана, полиангидрида, полифосфазена, полиаминокислоты, сополимеров и их смесей.3. Оболочка по п.2, отличающаяся тем, что вышеупомянутый гидрофобный алифатический полиэфир является, по крайней мере, одним веществом, выбранным из группы, состоящей из полимолочной кислоты, полигликолида, поликапролактона и полигидроксибутирата.4. Оболочка по п.2, отличающаяся тем, что вышеупомянутый полиэфир-эфирный сополимер является, по крайней мере, одним веществом ...

Холстообразующее аэродинамическое устройство

VERFAHREN ZUR HERSTELLUNG EINER STAPELFASERBAHN

VORRICHTUNG ZUR TROCKENHERSTELLUNG EINER FASERSTOFFBAHN

Faserproduktrückgewinnung in einer Vliesenherstellung aus Fasern.

Verfahren und Einrichtung zur Ablagerung von Mineralfasern.

Apparatus for producing a fleece from fibre flocks

Apparatus for producing a fleece from fibre flocks, with a first shaft which is coated at the top with fibre flocks and at the lower end of which is provided a device for breaking open the fibre flocks and conveying them further into a second shaft, at the lower end of which the fibre flocks are drawn off in the form of a fleece, the density of the fleece being determined at a plurality of points distributed over its width, and the values determined being used to control a corresponding number of elements provided at corresponding points of one of the shafts, for the purpose of changing the air flow prevailing in the shaft at these points. ...

Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Faseragglomeraten

PROCESS AND APPARATUS FOR ASSEMBLING TEXTILE FIBRES INTO WEBS

... 1394604 Air laid web former E I DU PONT DE NEMOURS & CO 20 April 1972 [20 April 1971] 18346/72 Heading DIN An apparatus for forming textile webs on a moving screen 26 has a duct through which a closely controlled low turbulence air flow passes and into which a uniform layer of fibres 22 is projected through a slit at at least 3000 ft/min; the fibres remaining as a distinct layer within the thickness of the air stream and being conveyed as such to the moving screen 26; the fibres being injected by a toothed roll 8 in co-operation with a curved plate 10 at a clearance of less than 0.125 inches from the roll teeth. The air flow is maintained within close velocity limits and with low turbulence across the entire duct depth and width with the exception of boundary layer regions. Velocity limits and turbulence levels are given. The air flow is stabilised by a honeycomb 40 and screens 38, 42 and is conducted to the working section by a nozzle 18 suitable forms of which are disclosed. The boundary ...

Improvements in or relating to apparatus for the manufacture of a hair or fibre web

... 1,090,827. Forming fibre webs. E. FEHRER and R. FEHRER, [trading as SPEZIALMASCHINENFABRIK DR. ERNST FEHRER], Dec. 21, 1964 [Feb. 5, 1964], No. 51918/64. Heading D1N. A hair or fibre web is formed by apparatus comprising a picker drum 3 arranged to throw the hairs or fibres upwardly or horizontally above a conveyor belt 6 spaced sufficiently far below the picker drum that the hairs or fibres lose the velocity imparted to them by the drum. The drum 3 is preferably arranged in a shaft which is so perforated as to ensure still air conditions in the lower part of the shaft. One lower edge of the shaft is provided with a vertically movable roll 8.

Improved method and device for the production of random asbestos webs

Webs of evenly mixed asbestos and other longer fibres, e.g cotton or rayon are prepared by passing mixed and opened fibres in an accelerating air stream from a heater to foraminous drums prior to being carded. Partially opened asbestos fibres are further opened in a vertical opener 2 and blown into containers 4 from which they may fall onto a conveyor 7 upon which a web of cotton or rayon fibres has already been laid from a lap 8. The conveyor 7 and delivery devices associated with the containers 4 operate intermittently so as to supply only sufficient fibres to an opener 10 as provide one charge. After being treated in the opener 10 each charge is deposited on a conveyor belt 12 from which a double hopper feeder 13 transfers the charges to a Kirschner heater type scutcher 16 following which a lap is formed at 21. Fibres are sucked from the heaters of the scutcher by air drawn through perforated drums and by reason of the duct reducing in section between heater and drums the air stream ...

Web-Forming Apparatus

... 1,151,720. Forming webs. O. ANGLEITNER. 16 Nov., 1966 [29 Nov., 1965], No. 51428/66. Heading D1N. Apparatus for forming a web 3 eg. preparatory to producing a non-woven fabric comprises a duct 2 for guiding an air current containing fibres against one or more rotatable screen drums, the duct having a cover 4 which is adjustable in length and position relative to the screen drum. As shown the cover 4 is in two relatively adjustable sections and is pivoted at 5; a fixing means is provided, to hold the cover in its adjusted position; the cover may be adjustable in height at both ends and it may be of several parts telescopically connected. In Fig. 2, not shown, a second screen drum is provided above drum 1 and the cover 4 raised to contact the second drum. The web is formed at the nip of the two drums. By adjusting cover 4 and by providing or not providing a second screen drum, a variety of constructions of web can be produced e.g. in the web of Fig. 1 the fibres are oriented mainly in the ...

Process and apparatus for producing uniform fibrous web at high rate of speed

A method and apparatus is disclosed for producing high quality fibrous webs at high rates of speed. Fibers are fed to a rotating lickerin for opening, then to a rotating card cylinder for individualizing, and are then doffed into an air stream from which the fibers are condensed, as on a moving foraminous belt.

Apparatus for measuring the mass of fibre material passing through a spinning preparation machine or system

Method for producing non-woven textile fabrics

The subject-matter of this Specification is substantially the same as that described in the parent Specification 1,030,671, but the claims are concerned with the drafting of a fibrous web as it is laid down on a moving conveyer.

Heat Insulating Materials

... 1,154,324. Fibrous mats; thermal insulating. CAPE INSULATION Ltd. 25 Nov., 1966 [27 Aug., 1965], No. 36922/65. Headings DIN and D1R. A thermal insulating body comprises a mass of short (mean length less than 1") mineral fibres, which fibres are orientated in planes parallel to the body surface. The fibres may be asbestos, glass wool, rock wool or slag wool, and may be mixed with long (greater than 1") fine (diameter less than 7Á) fibres. In preferred embodiments the body is in the form of a flat mat or a half-cylinder. A bonding agent such as sodium silicate, urea formaldehyde or phenol-formaldehyde may be incorporated in the material. A method of producing the material comprises conveying a mass 9 of mineral fibres on a belt 1 to a pair of feed rollers 3 associated with a spiked rotating drum 2. The fibres are then dispersed in an air hood 4 and entrained in a stream of air which carries them to a perforated rotating collecting drum 6, the mat thus formed being carried away by a conveyor ...

Improvements in or relating to machines for forming webs of randomly arranged fibres

... 1,010,146. Opening and lap-forming machines. BIRFIELD ENGINEERING Ltd. March 7, 1962 [Dec. 8, 1960], No. 42223/60. Heading D1N. In a machine for forming webs of randomly arranged fibres and comprising a condenser including a suction box mounted within a foraminous drum and a blower to develop an air stream that carries fibres to the suction box, the suction box is provided with interior baffles to ensure uniform suction along the length of foraminous drum. The baffles may be perforated and, where two baffles are employed, they may be mutually inclined. The invention may be arranged within a machine that includes a hopper 1, with a floor consisting of an inching conveyer 2 and from which fibres are drawn by an inclined conveyer 3 swept by an orbital action comb 5 to be delivered by a feed belt 7 to a toothed pre-opening drum 8. From the drum 8 fibres are collected by a stream of air delivered along the duct 9 by a blower 22 and passed to the foraminous surface of a condenser 10. Any fibres ...

Improvements in apparatus for the manufacture of mats or laps from inorganic fibres

... 502,630. Forming mats or laps of glass wool &c. TRIGGS, W. W., (Naamlooze Vennootschap Maatschappij tot Beheer en Exploitatie van Octrooien) Dec. 24, 1937. No. 35723. [Class 120 (i)] In the manufacture of mats or laps of inorganic fibres, e.g. glass wool, wherein the fibres are fed in a direction substantially at right-angles to a conveyer 16 travelling across the lower open end of a chamber 15, Fig. 1, one or both side walls 22, Fig. 3, of the chamber 15 are adjustable laterally for adjusting the width of the lap or mat 18 while sealing members 30 are provided between the conveyer and the lower edge of the side walls 22. Fibres, e.g. of glass are carried downward by the blast from blowers 13 through spouts 14 into the chamber 15 and deposited on the conveyer 16 which is of openwork construction and provided with a suction chamber 17. The chamber or hood 15 comprises a vertical front wall 20 an inclined rear wall 21 and vertical side walls 22 pivotally, mounted on rods 23 and fixed in their ...

Improvements in or relating to the manufacture of felted fabrics

... 556,977. Carding-engines. ANGLO FELT INDUSTRIES, Ltd., and NEUHAUS, H. May 15, 1942, No. 6600. [Class 120 (i)] [Also in Group VIII] In making felted material comprising a mixture of long and short fibres, the long fibres are processed on a Garnet or like machine and the fleece, after leaving the doffer of the machine, has short fibres distributed directly on the surface thereof by sifting from a loose assembly of uncarded fibre ; the composite fleece is then felted into flat web form. The short fibres, which may be asbestos, may be secured to the fleece, which may be of goat or horse hair, by an adhesive applied to the fleece before the short fibres are sprinkled thereon. As shown, the fleece a from the doffer 1 is fed to a conveyer 4, which may be part of a Blamires feed or like lapping machine, and passes beneath a rotatable perforated drum 5 into an open end of which the short fibres b are fed from a hopper 8 ; agitators 9 in the drum distribute the short fibres therein and are rotated ...

FIBRE DISTRIBUTION AND DEPOSITING APPARATUS

... 1512140 Fibre distribution in web formers CROWN ZELLERBACH CORP 29 Nov 1976 [24 Dec 1975] 49704/76 Heading DIN A device 14 for distributing fibres in the production of fibre webs comprises a duct in which front and rear walls converge from an inlet 60 to an outlet 62 while side walls 54, 56 diverge linearly, the front and rear walls being convexly curved in the direction shown to give a cross section area which does not deviate by more than 20%. The inlet of the duct is circular while the exit has two long parallel sides with curved or linear ends. Vanes 80 can be provided to be selectively positioned in a slot 82 in order to adjust the fibre distribution across the duct by means of their wakes. Gas entrained fibres are projected into the distributor 14 from a conduit 10 which is spaced from the distributor to entrain air. The distributor leads the fibres on to a foraminous collecting belt 16 below which a suction box 20 is located. Two examples are given with details of how the dimensions ...

METHOD AND DEVICE FOR THE PRODUCTION OF DRY LAID NONWOVEN WEBS

Improvements in apparatus for collecting airborne textile fibrous materials

... 871,700. Collecting airborne textile fibres. T.M.M. (RESEARCH) Ltd. Dec. 3, 1959 [Dec. 3, 1958], No. 39039/58. Class 120(1) Apparatus for collecting airborne textile fibres from an airstream in which they are entrained comprises a foraminated cylindrical condensing surface 11, rotating about a suction nozzle casing 12, longitudinally slotted and fixed relative to a suction fan 10, the nozzle casing 12 being divided into two horizontal compartments by an apertured plate 13, the cross-section of the aperture of which decreases uniformly towards the suction fan 10. In a modification, Fig. 2., for a textile combing machine, slot 13 is replaced by a series of slots 132 whose cross-sectional area decrease towards the suction fan 10 and opposite which are slots 122 in the nozzle casing 12. The nozzle may be exhausted at both ends of the cage 11, in which case the aperture 13 would be widest at its midpoint, or the suction fan 10 may serve two condensers or the cylindrical condensing surface may ...

METHOD AND APPARATUS FOR MAKING BONDED FELT WEBS

... 1505018 Forming bonded webs B RUDLOFF 22 June 1976 [30 June 1975] 25866/76 Headings D1N and D1R A bonded non-woven fabric is produced by depositing fibres 2 upon a feeding belt 1, passing the fibres between fluted rollers 3, 4 separating the fibres and passing them to mixing chamber 7 by means of spiked roller 5, mixing the fibres with powdered binder from hopper 8, suspending the fibres and binder in air before they are deposited on perforated collector 10 by the application of suction, and equalising the thickness of the layer 15 so formed. The thickness of layer 15 is equalised by perforated roller 19. A cylindrical segment 20 is disposed coaxially within roller 19. It may be turned to vary the height above conveyor 10 of its opening 21 and thus influence, via the air stream flowing from opening 21, the height of the fibrous layer 21 passing under roller 19. The layer is then flattened by roller 16. Part 17 of the top surface of mixing chamber 7 is perforated. The degree of vacuum in ...

PROCESS AND APPARATUS FOR ASSEMBLING TEXTILE FIBRES INTO WEBS

... 1488059 Web formers E I DU PONT DE NEMOURS & CO 4 Aug 1975 [9 Aug 1974] 32482/75 Heading D1N An air laying web former has a duct which conveys fibers 22 in an air stream from which they are condensed into a web, the fibers being fed in by a disperser roll 8 which cooperates with a closely adjacent diperser plate 10 which has a curved cooperating surface, the surface being roughened. The roughening preferably comprises grooves which run crossways of the roller, this produces turbulence in the space between the roller and plate 10 which gives a more uniform web. Comparative examples are given which include details of operating speeds and dimensions. Specification 1394604 is referred to.

Improvements in and relating to the production of unwoven fabrics

... 885,379. Agglutinated fibrous materials. WEST POINT MANUFACTURING CO. Jan. 28, 1958 [Feb. 1, 1957], No. 2779/58. Class 140. [Also in Group IX] Apparatus for the production of unwoven fabric comprises means to provide a moving source of fibre supply by attenuation of a fibre lap, a fibre transfer duct having an open fibre-receiving end extending across the width of the moving source of fibre supply and in communication therewith, with the edges defining the width of the duct end being spaced from the source of fibre supply to form air inlets, an endless foraminous fibre-receiving member at the opposite discharge end of the duct and means for creating an air stream through the air inlets, duct and foraminous member to remove fibres from the attenuating means and transfer them through the duct to the foraminous member to form a web thereon, in which the fibre transfer duct has a first section extending from the fibre-receiving end and merging into a second section terminating at the discharge ...

Improvements relating to blowing or cleaning machines for fur, hair or the like

... 158,871. Heinze Maschineafabrik, C. Feb. 13, 1920, [Convention date]. Openers and cleaners.-In a machine for blowing and cleaning fur, hair, or the like a sieve-like perforated surface, which may be in the form of a rotating cylinder u, Fig. 1, is arranged behind the combing-roller w, so that the air carried round by the roller w may in part penetrate the sieve and leave the fine fibres upon it to be carried round by it to the next blowing chamber b. The dirt and impurities are struck down tangentially by the roller w, and the fine fibres which do not adhere to the sieve are carried vertically upwards into the wire-netting dome c of the blowing chamber. The material is fed in by an endless apron d and passes through geared feed rollers g, h driven through bevel gearing from a side shaft. The cylinder u is driven through gearing from the lower roller shaft. The combing-roller w is independently driven at a high speed.

VORRICHTUNG ZUM HERSTELLEN EINES VLIESES

ZERFASERER UND VERFAHREN ZUM ZERFASERN

EINRICHTUNG ZUM HEBEN VON FASERGUT

VORRICHTUNG ZUM HERSTELLEN EINES FASERVLIESES, Z.B. AUS BAUMWOLLE, CHEMIEFASERN, FASERMISCHUNGEN U.DGL.

PROCEDURE FOR THE COLORLESS ONE, PLASTIC EXAMINATION AND SOLIDIFICATION OF A GOODS COURSE AND A DEVICE FOR THE EXECUTION OF THE PROCEDURE

METHOD AND APPARATUS FOR THE PRODUCTION OF A FIBRE NONWOVEN

In order to produce a fibre nonwoven from a pre-nonwoven, a conventional card drum 1 with a suction-controlled continuously moved catching surface 2 for the fibres flying off from the card drum 1 is used. So that advantageous conveying conditions can be ensured for the fibres which fly off, suction is applied to the fibre clothing of the card drum 1 in layers in successive circumferential regions of the drum surface by means of suction ducts 3 between the card drum 1 and the catching surface 2, for the purpose of forming fibre part-streams. ...

Apparatus for the production of a fibre nonwoven

In order to produce a fibre nonwoven from a pre-nonwoven, a conventional card drum 1 with a suction-controlled continuously moved catching surface 2 for the fibres flying off from the card drum 1 is used. In order to ensure advantageous conveying conditions for the fibres which fly off, the fibre covering the card drum 1 is sucked away in layers, in successive circumferential regions of the card drum 1, through suction ducts 3 between the card drum 1 and the catching surface 2, in order to form fibre part-streams, which are designed as part of a discharge conveyor belt 11 for the fibre nonwoven. ...

Apparatus for the production of a fibre nonwoven

An apparatus for the production of a fibre nonwoven consists of a plurality of toothed card drums 1, 2 which rotate in the same direction and which follow one another in the direction of run-through of the pre-nonwoven. The card drum 2 in each case located downstream in the direction of run-through of the pre-nonwoven forms a worker roller for the upstream card drum 1. The fibres flying off from the card drums 1, 2 in throw-off ducts 6, 7 are deposited on a suction-controlled catching surface 3. In order to ensure that the fibres are deposited on the catching surface 3 in a stress-free and random manner, without a preferential direction, even in the region of the throw-off duct 7 of the card drum 2 which is last in the direction of run-through, this last card drum 2 is assigned a toothed roller 9 rotating in the opposite direction and having teeth inclined rearwards with respect to the direction of rotation, the associated throw-off duct 7 extending into the gusset region 10 between the ...

DEVICE FOR THE PRODUCTION OF BONDED FABRICS AFTER THE AIRLAIDVERFAHREN, CONTAINING DEGRESSIVE ONE SUCTION MEANS

FIBER DISTRIBUTOR

VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON FASERMATTEN

MASCHINE ZUR HERSTELLUNG VON WIRRFASERVLIESEN

VERFAHREN ZUM HERSTELLEN EINES VLIESES AUS WENIGSTENS EINEM MIT BINDEFASERN GEMISCHTEN, NACHWACHSENDEN ROHSTOFF

CLOTH MATERIAL AND PROCEDURE FOR THE PRODUCTION

FLEECE MATERIAL

PROCEDURE FOR THE PRODUCTION OF A FIBER AGGREGATE AND DEVICE

VERFAHREN ZUR BILDUNG EINES AUS SOWOHL KURZEN ALS AUCH LANGEN FASERN BESTEHENDEN WIRRFASER- VLIESES UND VORRICHTUNG ZUR DURCHFUEHRUNG DIESES VERFAHRENS

SCHICHTSTOFF AUS ZWEI UEBEREINANDERLIEGENDEN, VERBUNDENEN VLIESBAHNEN

VORRICHTUNG ZUM HERSTELLEN EINES FASERVLIESES

MASCHINE ZUM HERSTELLEN VON WIRRFASERVLIESEN

FIBER FEEDING DEVICE

GENADELTES FLEECE, IN PARTICULAR TO THE USE AS IMITATION LEATHERS, AND PROCEDURE FOR THE PRODUCTION OF THE SAME

DEVICE FOR MANUFACTURING A NON-WOVEN CLOTH

DEVICE FOR MANUFACTURING A NON-WOVEN CLOTH

PROCEDURE AND DEVICE FOR MANUFACTURING A NON-WOVEN CLOTH MATERIAL

STUFF GRINDER AND PROCEDURE FOR ZERFASERN

GENADELTES FLEECE, IN PARTICULAR TO THE USE AS IMITATION LEATHERS, AND PROCEDURE FOR THE PRODUCTION OF THE SAME

Roller sequence for mass of non-woven fibres in fleece manufacture, comprises parallel rollers some arranged in ascending sequence, and some having bearings laterally offset from the others

An assembly lifts a bulk quantity of non-woven fibres with a series of parallel rollers some or which are arranged in ascending sequence. Some of the rollers have bearings laterally offset from the others. Especially, the gap between the outer mantles of at least two neighboring rollers is infinitely variable.

Flexible Vlieselemente auf Basis von Rohrkolben-Blattfasern für Dämmzwecke

Die Erfindung betrifft Vlieselemente auf Basis von Rohrkolben-Blattfasern,Gerüst-Naturfasern und thermoaktivierbaren Bindefasern sowie ein Verfahrenzur Herstellung dieser Vlieselemente.

GELÖCHERTES NON-WOVEN CLOTH OF HIGH ELASTICITY AND PROCEDURE FOR ITS PRODUCTION

PROCEDURE FOR THE PRODUCTION OF A TRIBOELEKTRISCH LOADED FLEECE MATERIAL

DEVICE FOR THE EDUCATION OF A MULTILEVEL FLEECE FROM RANDOMORIENTED FIBERS AS WELL AS A WITH OF THIS DEVICE MADE FLEECE

FIBER PRODUCT RECUPERATION IN FLEECE PRODUCTION FROM FIBERS.

PROCEDURE FOR THE PRODUCTION OF FIBER FELT.

PROCEDURE AND DEVICE FOR THE IMPROVEMENT OF EDUCATION CONDITIONS WITH FIBER MATTRESSES.

DEVICES FOR FORMING FIBER FELT.

BONDING MATERIAL FROM MINERAL FIBRES, PLANT FOR THE PRODUCTION AND USE OF THE BONDING MATERIAL.

MECHANISM FOR LIFTING FIBER PROPERTY

PROCEDURE AND DEVICE FOR THE PRODUCTION OF A NON-WOVEN CLOTH COURSE

SYNTHETIC BIKOMPONENTENFASER AND PROCEDURES FOR YOUR PRODUCTION.

PROCEDURE AND DEVICE FOR MANUFACTURING THE MAIN VOLUME OF A MINERAL FIBRE MAT

ABSORBENT COTTON FLEECE MATERIAL AND FROM THE TRANSFORMATION OF THE FLEECE MATERIAL MANUFACTURED PRODUCTS

Device for the production of a mat from glass cloth shreds

Device for the continuous production of Dochten, Gespinsten or fleeces from fibers from thermoplastic material

STUFF GRINDER AND PROCEDURE FOR ZERFASERN

PROCEDURE AND DEVICE FOR CONDITIONING AND DISPERSING FIBERS OR OTHER PARTICLES FUR THE PRODUCTION OF CONTINUOUS COURSES OF FLEECES, PAPERS OD.DGL.

PROCEDURE AND MECHANISM FOR THE DEPOSIT OF MINERAL FIBRES.

VORRICHTUNG ZUM HERSTELLEN EINES FASERVLIESES, Z.B. AUS BAUMWOLLE, CHEMIEFASERN, FASERMISCHUNGEN U.DGL.

VORRICHTUNG ZUM HERSTELLEN EINES FASERVLIESES

PLANT FOR THE PRODUCTION OF A NOT WEAVING FIBER PRODUCT

Machine to the production of a non-woven cloth

DEVICE FOR THE DRYING DISTRIBUTING OF FIBROUS MATERIALS

VОRRIСНТUNG ZUМ НЕRSТЕLLЕN ЕINЕS FАSЕRVLIЕSЕS, Z.В. АUS ВАUМWОLLЕ, СНЕМIЕFАSЕRN, FАSЕRМISСНUNGЕN U.DGL.

VОRRIСНТUNG ZUМ НЕRSТЕLLЕN ЕINЕS FАSЕRVLIЕSЕS, Z.В. АUS ВАUМWОLLЕ, СНЕМIЕFАSЕRN, FАSЕRМISСНUNGЕN U.DGL.

VОRRIСНТUNG ZUМ НЕRSТЕLLЕN ЕINЕS FАSЕRVLIЕSЕS, Z.В. АUS ВАUМWОLLЕ, СНЕМIЕFАSЕRN, FАSЕRМISСНUNGЕN U.DGL.

VОRRIСНТUNG ZUМ НЕRSТЕLLЕN ЕINЕS FАSЕRVLIЕSЕS, Z.В. АUS ВАUМWОLLЕ, СНЕМIЕFАSЕRN, FАSЕRМISСНUNGЕN U.DGL.

VОRRIСНТUNG ZUМ НЕRSТЕLLЕN ЕINЕS FАSЕRVLIЕSЕS, Z.В. АUS ВАUМWОLLЕ, СНЕМIЕFАSЕRN, FАSЕRМISСНUNGЕN U.DGL.

VОRRIСНТUNG ZUМ НЕRSТЕLLЕN ЕINЕS FАSЕRVLIЕSЕS, Z.В. АUS ВАUМWОLLЕ, СНЕМIЕFАSЕRN, FАSЕRМISСНUNGЕN U.DGL.

VОRRIСНТUNG ZUМ НЕRSТЕLLЕN ЕINЕS FАSЕRVLIЕSЕS, Z.В. АUS ВАUМWОLLЕ, СНЕМIЕFАSЕRN, FАSЕRМISСНUNGЕN U.DGL.

VОRRIСНТUNG ZUМ НЕRSТЕLLЕN ЕINЕS FАSЕRVLIЕSЕS, Z.В. АUS ВАUМWОLLЕ, СНЕМIЕFАSЕRN, FАSЕRМISСНUNGЕN U.DGL.

VОRRIСНТUNG ZUМ НЕRSТЕLLЕN ЕINЕS FАSЕRVLIЕSЕS, Z.В. АUS ВАUМWОLLЕ, СНЕМIЕFАSЕRN, FАSЕRМISСНUNGЕN U.DGL.

VОRRIСНТUNG ZUМ НЕRSТЕLLЕN ЕINЕS FАSЕRVLIЕSЕS, Z.В. АUS ВАUМWОLLЕ, СНЕМIЕFАSЕRN, FАSЕRМISСНUNGЕN U.DGL.

VОRRIСНТUNG ZUМ НЕRSТЕLLЕN ЕINЕS FАSЕRVLIЕSЕS, Z.В. АUS ВАUМWОLLЕ, СНЕМIЕFАSЕRN, FАSЕRМISСНUNGЕN U.DGL.

VОRRIСНТUNG ZUМ НЕRSТЕLLЕN ЕINЕS FАSЕRVLIЕSЕS, Z.В. АUS ВАUМWОLLЕ, СНЕМIЕFАSЕRN, FАSЕRМISСНUNGЕN U.DGL.

BICOMPONENT SYNTHETIC FIBRE AND PROCESS FOR PRODUCING SAME

Composite Nanofibers

The present invention is generally directed to, in one embodiment, a composite nanofiber having a plurality of nanoparticles retained on the surface of the nanofiber, and a process for forming such composite nanofibers.

Nanofibre membrane layer for water and air filtration

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.

Electrospun silk material systems for wound healing

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.

Rotary spinning electrode

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.

Highly functional spunbonded fabric made from particle-containing fibres and method for producing same

The invention relates to functional spunbonded fabrics incorporating fibers made from non-fusible polymers containing one or more functional additives. The fibers are interwoven and interlocked to form a firm fleece composite, have different lengths, and have aspect ratios above 1,000. The fibers have a mean diameter of 0.1 to 500 micrometres and diameter variations within a fiber and/or among each other of at least 30%. The fibers contain more than 40 wt % of finely distributed functional additives in solid and/or liquid form. The spunbonded fabric is produced from a spinning solution containing the non-fusible polymer dissolved in a direct solvent and at least one functional additive. The spinning solution is extruded out of a spinneret, and the resulting strands are drawn in the longitudinal direction to form filaments or fibers, stabilized and laid down to form a fleece fabric. Exemplary spunbonded fabrics include clothing, technical textiles and filters.

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

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.

Corrugated carbon fiber preform

In one example, a method includes mixing a plurality of carbon fibers in a liquid carrier to form a mixture, depositing the carbon fiber mixture in a layer, forming a plurality of corrugations in the carbon fiber layer, and rigidifying the corrugated carbon fiber layer to form a corrugated carbon fiber preform. In another example, a method includes substantially aligning a first ridge on a first surface of a first corrugated carbon fiber preform and a first groove on a first surface of a second corrugated carbon fiber preform, bringing the first surface of the first corrugated carbon fiber preform into contact with the first surface of the second corrugated carbon fiber preform, and densifying the first corrugated carbon fiber preform and the second carbon fiber preform to bond the first corrugated carbon fiber preform and the second carbon fiber preform.

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

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.

Patterned air-laid nonwoven electret fibrous webs and methods of making and using same

Nonwoven electret fibrous webs including randomly oriented discrete fibers comprising electret fibers, the webs including a multiplicity of non-hollow projections extending from a major surface of the nonwoven electret fibrous web, and a multiplicity of substantially planar land areas formed between each adjoining projection in a plane defined by and substantially parallel with the major surface. In some exemplary embodiments, the randomly oriented discrete fibers include multi-component fibers having at least a first region having a first melting temperature and a second region having a second melting temperature, wherein the first melting temperature is less than the second melting temperature. At least a portion of the oriented discrete fibers are bonded together at a plurality of intersection points with the first region of the multi-component fibers. In certain embodiments, the patterned air-laid nonwoven electret fibrous webs include particulates. Methods of making and using patterned electret fibrous webs are also disclosed.

POLYMER FIBER, METHOD FOR PRODUCING THE SAME, AND APPARATUS FOR PRODUCING THE SAME

A polymer electrolyte fiber having a high molecular weight is produced with ease by an electrospinning method. In an electrospinning method which comprises applying a voltage to a solution of a polymer electrolyte to allow a jet of the solution to spurt, forming a polymer fiber, the voltage applied to the solution of the polymer electrolyte is a voltage having the opposite polarity to the charge of molecular chains of the polymer electrolyte in the solution, and the voltage is applied to increase the viscosity of the solution to be higher than that of the solution before applying the voltage, allowing the solution to spurt. 1. A method for producing a polymer fiber by an electrospinning method which comprises applying a voltage to a solution of a polymer electrolyte to allow a jet of the solution to spurt , forming a polymer fiber , wherein the voltage applied to the solution of the polymer electrolyte to allow the solution to spurt is a voltage having the opposite polarity to the charge of molecular chains of the polymer electrolyte in the solution.2. The method for producing a polymer fiber according to claim 1 , wherein the polymer electrolyte is at least any one of naturally derived polymers (chitosan claim 1 , hyaluronic acid claim 1 , polyglutamic acid claim 1 , nucleic acid claim 1 , polypeptide claim 1 , protein claim 1 , cellulose claim 1 , and derivatives thereof).3. The method for producing a polymer fiber according to claim 1 , wherein the polymer electrolyte is at least any one of synthetic polymers (polyacrylamide claim 1 , polyacrylic acid claim 1 , polystyrenesulfonic acid claim 1 , polyallylamine claim 1 , and polyethylene-imine).4. The method for producing a polymer fiber according to claim 1 , wherein the polymer electrolyte is a blend (mixture) having as a component at least one polymer electrolyte selected from naturally derived polymers (chitosan claim 1 , hyaluronic acid claim 1 , polyglutamic acid claim 1 , nucleic acid claim 1 , polypeptide ...

Polypeptide electrospun nanofibrils of defined composition

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.

NANOFIBER

A nanofiber made of a water soluble polymer, having a cavity , and containing an oily component in the cavity . The nanofiber preferably has a small-diametered portion and a large-diametered portion . The cavity is preferably in the large-diametered portion . The cavity is also preferably in both the large-diametered portion and the small-diametered portion , with the cavity in the large-diametered portion and the cavity in the small-diametered portion being interconnected. 18.-. (canceled)9. A nanofiber comprising a water soluble polymer , having a cavity , and containing an oily component in the cavity ,the nanofiber having a large-diametered portion and a small-diametered portion, andthe large-diametered portion having the cavity.10. The nanofiber according to claim 9 , wherein the small-diametered portion has the cavity claim 9 , and the cavity in the large-diametered portion and the cavity in the small-diametered portion are interconnected.11. The nanofiber according to claim 9 , wherein the water soluble polymer is one of claim 9 , or a combination of two or more of pullulan or a synthetic polymer selected from the group consisting of partially saponified polyvinyl alcohol claim 9 , low-saponified polyvinyl alcohol claim 9 , polyvinylpyrrolidone claim 9 , and polyethylene oxide.12macadamia. The nanofiber according to claim 9 , wherein the oily component comprises one of claim 9 , or a combination of two or more of squalane claim 9 , olive oil claim 9 , silicone oil claim 9 , nut oil claim 9 , or cetyl 1 claim 9 ,3-dimethylbutyl ether.13. The nanofiber according to claim 9 , wherein the oily component comprises vitamin E claim 9 , hamomile extract or rose extract.14. The nanofiber according to claim 13 , wherein the oily component comprises chamomile extract claim 13 , cetyl 1 claim 13 ,3-dimethylbutyl ether or silicone oil.15. The nanofiber according to claim 9 , wherein the oily component comprises a first oily component and a second oily component claim 9 , ...

Nonwoven material and dryer with nonwoven material

A non-woven fabric includes flame retardant fibers and binding fibers mixed with the flame retardant fibers. The binding fibers set a thickness of the fabric. Application of a flame to the fabric causes the binding fibers to degrade and the flame retardant fibers to expand such that the thickness of the fabric increases, for example by a factor of two or more. The non-woven fabric can be used in a wide variety of different applications. For example, the non-woven fabric may be used to make seals of a drier, heat shields, fire barriers, and/or vents.

MECHANICALLY STRONG ABSORBENT NON-WOVEN FIBROUS MATS

The present invention is generally directed to a liquid entrapping device having the capacity to absorb liquids. More particularly, the present invention is directed to a liquid entrapping device comprising an absorbent component, hydrophilic elastomeric fibrous component in fluid communication therewith, and optionally an adhesive component. The present invention is also directed to a liquid entrapping device having the capacity to absorb liquids while maintaining a suitable degree of mechanical strength. Furthermore, the present invention is generally directed to methods for making and using the foregoing devices and materials. 1. A liquid entrapping device comprising:an absorbent component; anda hydrophilic elastomeric fibrous component,wherein the absorbent component and the hydrophilic elastomeric fibrous component are in physical proximity thereby resulting in fluid communication, wherein the absorbent component is more absorbent than the hydrophilic elastomeric fibrous component but wherein the hydrophilic elastomeric fibrous component absorbs more quickly than and has a smaller holding capacity than the absorbent component, wherein the liquid entrapping device, including the hydrophilic fibrous component is formed from at least one electrospun nanofiber where the at least one electrospun nanofiber comprises both the absorbent component and the hydrophilic elastomeric fibrous component in the nanofiber body, where wherein the absorbent component is mechanically entangled by the electrospun hydrophilic elastomeric fibrous component.2. The liquid entrapping device of claim 1 , wherein the absorbent component is selected from polyesters claim 1 , polyethers claim 1 , polyester-polyethers claim 1 , polymers having pendant carboxylic acids or pendant hydroxyls claim 1 , polysiloxanes claim 1 , polyacrylamides claim 1 , kaolins claim 1 , serpentines claim 1 , smectites claim 1 , glauconite claim 1 , chlorites claim 1 , vermiculites claim 1 , attapulgite claim 1 , ...

NONWOVEN FABRIC, METHOD FOR PRODUCING THE SAME, AND FILTER FORMED WITH THE SAME

The present invention provides a novel nonwoven felt fabric, which is made of at least one low-melting-point short fiber and at least one high-melting-point short fiber of same type or different types, wherein the fabric is stiff enough to be self-sustaining and have the ability of shape maintenance. The felt fabric exhibits excellent pleatability, moldability and compressive strength. The invention also provides a method for producing the felt fabric, and a filter comprising the felt fabric used as the material of a filter medium of the filter, wherein the filter medium requires no support structure to stand alone and persistently retains its shape. 1. A nonwoven felt fabric which is made of at least one low-melting-point short fiber and at least one high-melting-point short fiber of same type or different types , wherein the fabric is stiff enough to be self-sustaining and have the ability of shape maintenance , and the fabric is also mouldable.2. The nonwoven felt fabric as claimed in claim 1 , wherein the nonwoven felt fabric consists of a single layer of fiber formed by evenly blending the low-melting-point short fiber and the high-melting-point short fiber.3. The nonwoven felt fabric as claimed in claim 1 , wherein the nonwoven felt fabric comprises alternately at least one layer of the low-melting-point short fiber and at least one layer of the high-melting-point short fiber.4. The nonwoven felt fabric as claimed in claim 1 , wherein the low-melting-point short fiber is heated into a molten state so that the molten low-melting-point short fiber gets tangled up in the high-melting-point short fiber claim 1 , and then cooled down quickly and solidified.5. The nonwoven felt fabric as claimed in claim 1 , wherein the low-melting-point short fiber has a melting point ranging from 115° C. to 130° C. claim 1 , and the high-melting-point short fiber has a melting point ranging from 180° C. to 230° C.6. The nonwoven felt fabric as claimed in claim 1 , wherein each of ...

Electrospun Porous Media

Espun material may function as a filtration medium or be put to other uses. The espun material may comprise espun poly(tetrafluoroethylene) (espun PTFE). One or more layers of the espun material may be included. The properties of the espun material can be tailored. For example, a gradient fabric may include espun PTFE. The gradient fabric may include two or more layers of espun PTFE.

Membrane suitable for blood filtration

The invention relates to a membrane construction comprising multiple layers wherein at least one of the layers is a nanoweb made of polymeric nanofibers, wherein the mean flow pore size of the nanoweb is in the range from 50 nm to 5 μm, wherein the number average diameter of the nanofibers is in the range from 100 to 600 nm, wherein the basis weight of the nanoweb is in the range from 1 to 20 g/m 2 , wherein the porosity of the nanoweb is in the range from 60 to 95%, wherein at least one of the layers is a support layer and wherein the nanoweb is hydrophilic.

NONWOVEN MATERIAL AND DRYER WITH NONWOVEN MATERIAL

A non-woven fabric includes flame retardant fibers and binding fibers mixed with the flame retardant fibers. The binding fibers set a thickness of the fabric. Application of a flame to the fabric causes the binding fibers to degrade and the flame retardant fibers to expand such that the thickness of the fabric increases, for example by a factor of two or more. The non-woven fabric can be used in a wide variety of different applications. For example, the non-woven fabric may be used to make seals of a drier, heat shields, fire barriers, and/or vents. 1. A non-woven fabric comprising:flame retardant fibers;binding fibers mixed with the flame retardant fibers;wherein the binding fibers set a thickness of the fabric;wherein application of a 1000° F. flame to the fabric causes the binding fibers to degrade and the flame retardant fibers to expand such that said thickness increases by a factor of at least two.2. The non-woven fabric of wherein said thickness increases by a factor of about two to about 6.3. The non-woven fabric of wherein the binding fibers are self-extinguishing fibers.4. The non-woven fabric of wherein the binding fibers are polyester fibers.5. The non-woven fabric of wherein the binding fibers are polyester bi-component fibers.6. The non-woven fabric of wherein the flame retardant fibers do not burn when the 1000° F. flame is applied to the fabric.7. The non-woven fabric of wherein the flame retardant fibers comprise oxidized Polyacrylonitrile fibers.8. The non-woven fabric of wherein the weight percentage of the flame retardant fibers is between 55% and 75% and the weight percentage of binding fibers is between 25% and 45% of the weight of the blanket.9. The non-woven fabric of wherein the binding fibers and the flame retardant fibers are not needled together.10. The non-woven fabric of wherein said thickness is less than ½″.11. The non-woven fabric of wherein said thickness is less than 8 mm and a weight of the fabric is greater than 200 grams per ...

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

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.

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

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.

Fibrous structures and methods for making same

Novel fibrous structures that contain filaments, and optionally, solid additives, such as fibers, for example wood pulp fibers, sanitary tissue products comprising such fibrous structures, and methods for making such fibrous structures and/or sanitary tissue products are provided.

Electrospinning of ptfe with high viscosity materials

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.

Methods for Electrospinning Hydrophobic Coaxial Fibers into Superhydrophobic and Oleophobic Coaxial Fiber Mats

Methods for electrospinning a hydrophobic coaxial fiber into a superhydrophobic coaxial fiber mat can include providing an electrospinning coaxial nozzle comprising a core outlet coaxial with a sheath outlet, ejecting an electrospinnable core solution from the core outlet of the electrospinning coaxial nozzle, ejecting a hydrophobic sheath solution from the sheath outlet of the electrospinning coaxial nozzle, wherein the hydrophobic sheath solution annularly surrounds the core solution, applying a voltage between the electrospinning coaxial nozzle and a collection plate, wherein the voltage induces a jet of the electrospinnable core solution annularly surrounded by the hydrophobic sheath solution to travel from the electrospinning coaxial nozzle to the collection plate to form the hydrophobic coaxial fiber comprising an electrospinnable polymer core coated with a hydrophobic sheath material, and wherein collection of the hydrophobic coaxial fiber on the collection plate yields the superhydrophobic coaxial fiber mat. 1. A superhydrophobic coaxial fiber mat comprising an electrospun hydrophobic coaxial fiber , wherein:the electrospun hydrophobic coaxial fiber comprises an electrospinnable polymer coated with a hydrophobic sheath material, the hydrophobic sheath material comprising 1 weight percent to 10 weight percent of the superhydrophobic coaxial fiber mat; andwherein, the superhydrophobic coaxial fiber mat possesses a contact angle greater than or equal to 150° with water.2. The superhydrophobic coaxial fiber mat of wherein the superhydrophobic coaxial fiber mat possesses a rolling angle less than or equal to 10° with water.3. The superhydrophobic coaxial fiber mat of wherein the superhydrophobic coaxial fiber mat possesses an alkane contact angle greater than or equal to 120° with alkanes.4. The superhydrophobic coaxial fiber mat of wherein the electrospun hydrophobic coaxial fiber comprises a fiber diameter of 0.2 μm to 2 μm.5. The superhydrophobic coaxial fiber ...

Three Dimensionally and Randomly Oriented Fibrous Structures

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 , ...

Preform produced by electrospinning, method for producing the same and use of such a preform

The invention relates to a method for producing a preform by means of an electrospinning process. The present invention also relates to the use of the present preform as a substrate for growing human or animal tissue thereon. The present invention furthermore relates to a method for growing human or animal tissue on a substrate, wherein the present preform is used as the substrate.

SHEET MATERIAL, METHOD FOR PRODUCING THE SAME AND DEVICE FOR CARRYING OUT THE METHOD

A method for producing a sheet material is disclosed, comprising the steps of providing a carrier material solution comprising a carrier material, and depositing the carrier material onto a collector by electrospinning the carrier material solution out of a spinning device, the collector having a first electrical polarity and the spinning device having a second electrical polarity being opposite to the first polarity. The collector comprises at least one differential section, the electrical polarity of which is adjusted during deposition of the carrier material in such a manner that it either resembles the electrical polarity of the remaining sections of the collector or differs from it. The invention further relates to a device for carrying out said method and a sheet material which can be produced by said method. 1. A method for producing a sheet material , comprising the following steps:providing a carrier material solution comprising a carrier material, anddepositing the carrier material onto a collector by electrospinning the carrier material solution out of a spinning device, the collector having a first electrical polarity and the spinning device having a second electrical polarity being opposite to the first polarity,whereinthe collector comprises at least one differential section, the electrical polarity of which is adjusted during deposition of the carrier material in such a manner that it either resembles the electrical polarity of the remaining sections of the collector or differs from it.2. The method according to claim 1 , wherein the collector is moved during deposition of the carrier material with respect to the spinning device claim 1 , wherein the position of the differential section remains constant with respect to the spinning device.3. The method according to claim 1 , wherein the collector comprises a plurality of differential sections claim 1 , the polarity of which is individually adjusted during deposition.4. The method according to claim 1 ...

CORRUGATED CARBON FIBER PREFORM

In one example, a method includes mixing a plurality of carbon fibers in a liquid carrier to form a mixture, depositing the carbon fiber mixture in a layer, forming a plurality of corrugations in the carbon fiber layer, and rigidifying the corrugated carbon fiber layer to form a corrugated carbon fiber preform. In another example, a method includes substantially aligning a first ridge on a first surface of a first corrugated carbon fiber preform and a first groove on a first surface of a second corrugated carbon fiber preform, bringing the first surface of the first corrugated carbon fiber preform into contact with the first surface of the second corrugated carbon fiber preform, and densifying the first corrugated carbon fiber preform and the second carbon fiber preform to bond the first corrugated carbon fiber preform and the second carbon fiber preform. 1. A method comprising:mixing a plurality of carbon fibers in a liquid carrier to form a carbon fiber mixture;depositing the carbon fiber mixture in a carbon fiber layer;forming a plurality of corrugations in the carbon fiber layer to form a corrugated carbon fiber layer; andrigidifying the corrugated carbon fiber layer to form a corrugated carbon fiber preform.2. The method of claim 1 , wherein mixing the plurality of carbon fibers in the liquid carrier to form the carbon fiber mixture comprises mixing the plurality of carbon fibers in water.3. The method of claim 2 , further comprising removing at least some of the water prior to forming the plurality of corrugations in the carbon fiber layer.4. The method of claim 2 , further comprising aligning the plurality of carbon fibers in the carbon fiber layer prior to forming the plurality of corrugations in the carbon fiber layer.5. The method of claim 2 , wherein rigidifying the corrugated carbon fiber layer to form the corrugated carbon fiber preform comprises removing water from the corrugated carbon fiber layer.6. The method of claim 1 , wherein mixing the ...

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

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.

METHOD FOR MANUFACTURING SOFT, RESISTANT AND BULKY NONWOVEN AND NONWOVEN THUS OBTAINED

Methods for manufacturing nonwovens and nonwovens obtained by such methods are provided. Particularly, nonwovens are provided with improved tactile and absorbent characteristics, which make them suitable for use in the field of surface cleaning, personal hygiene, or formation of garments. The methods are based on the use of lobed spunbonded filaments which have been treated by a thickening apparatus. 1. A mono- or multi-layer nonwoven obtained by a method comprising the following sequential steps;a) extruding continuous thread filaments or microfilaments through spinnerets to produce spunbonded continuous filaments or microfilaments having a lobed cross-section,{'sub': '1', 'b) laying at least one layer (T) of spunbonded lobed filaments or microfilaments on a suitable three dimensional support having a surface with ribs in contact with said filaments or microfilaments, and'}{'sub': 1', '1', '1, 'c) effecting a pre-consolidation of said layer Tby passing the layer T, supported by said three dimensional support, between two rollers, one of the rollers facing the layer T,'}wherein the ribs of said surface of said support have a height between 0.3 and 5 mm, said ribs being distributed to cover less than 14% of said surface, and{'sub': '1', 'wherein said roller facing the layer Tis provided with a metal outer surface and is subject to heating.'}2. The nonwoven according to claim 1 , further comprising a step of laying at least one layer (T) of absorbent material fibres on the nonwoven layer (T) subsequent to said step c).3. The nonwoven according to claim 2 , further comprising a step of laying at least one further layer (T) of spunbonded lobed filaments or microfilaments or carded staple fibres on the at least one layer (T) of fibres of absorbent material.4. The nonwoven according to claim 3 , further comprising claim 3 , subsequent to the step of laying said at least one layer (T) claim 3 , a step of treating said at least one further layer (T) to obtain an increase in ...

THERMALLY INSULATING BATT AND COMPOSITE

The present invention relates to a thermally insulating batt comprising: (i) 10 to 70% by weight staple flash spun plexifilamentary fibers or staple melt spun fibrillated fibers; (ii) 10 to 70% by weight staple fibers; and (ii) 5 to 30% by weight binding agent that can also be used in a thermally insulating composite suitable for use in exterior portions of residential and commercial buildings. 1. A thermally insulating batt comprising:(i) 10 to 70% by weight of the total batt of a collection of first staple fibers that comprise staple flash spun plexifilamentary fibers or staple melt spun fibrillated fibers or both;(ii) 10 to 70% by weight of the total batt of a collection of second staple fibers; and(iii) 5 to 30% by weight of the batt of binding agent.2. The thermally insulating batt of claim 1 , wherein the first staple fibers are present at 25 to 60% by weight of the total batt claim 1 , the second staple fibers are present at 25 to 60% by weight of the total batt claim 1 , and the binding agent is present at from 15 to 25% by weight of the total batt.3. The thermally insulating batt of claim 2 , wherein the first staple fibers are present at 35 to 60% by weight of the total batt claim 2 , the second staple fibers are present at 35 to 60% by weight of the total batt.4. The thermally insulating batt of claim 1 , wherein between 5 to 50% of the second staple fibers have a weight of less than 3.0 denier per filament.5. The thermally insulating batt of claim 1 , wherein the staple flash spun plexifilamentary fibers have a surface area of 10 m/g or less or a crush value of at least 1 mm/g or both.6. The thermally insulating batt of claim 5 , wherein the surface area is less than 5 m/g or the crush value is at least 1.5 mm/g or both.7. The thermally insulating batt of claim 1 , wherein the staple flash spun plexifilamentary fibers comprise a polyolefin polymer.8. The thermally insulating batt of claim 7 , wherein the polyolefin polymer is polyethylene.9. The ...

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

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.

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

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.

BIOMEDICAL PATCHES WITH ALIGNED FIBERS

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 ...

BIOMEDICAL PATCHES WITH SPATIALLY ARRANGED FIBERS

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 ...

PROSTHETIC IMPLANTABLE ANTIBACTERIAL SURGICAL MESH

The disclosed invention is directed to an implantable surgical prosthetic mesh having a nanofiber comprising one or more antibiotic and a polysaccharide, and a non-polysaccharide polymer deposited on the mesh. The mesh of the invention is shown to be effective in eliminating or minimizing the bacterial population in the mesh and surrounding tissue for at least 14 days from surgical implantation of the mesh. 114-. (canceled)15. A method of making an implantable medical prosthetic mesh comprising nanofibers and a polymer mesh , said method comprising:mixing a first solution containing chitosan in an amount in the range of 0.5 wt. % to 5 wt. % with a second solution comprising an antibiotic in an amount in the range of 1.0 wt. % to 5.0 wt. % and a polymer blend in an amount in the range of 6 wt. % to 15 wt. %, and the chitosan in an amount in the range of 8 wt. % to 35 wt. %, the chitosan having a degree of deacetylation in a range of 70% to 95%;', 'the antibiotic in an amount in the range of 15 wt. % to 35 wt. %; and', 'the polymer blend in an amount in the range of 45 wt. % to 70 wt. %, each weight percent relative to a total weight of the nanofibers;', 'wherein the polymer blend comprises polyvinyl alcohol and polyvinylpyrrolidone;', 'wherein an average diameter of the nanofibers is in a range of 50 nm to 300 nm;', 'wherein the nanofibers have a bore size in a range of 300 nm to 900 nm, then, 'electrospinning the solution mixture to form the nanofibers, wherein the nanofibers comprisedepositing the nanofibers onto a mesh substrate to form the implantable medical prosthetic mesh having the nanofibers present on the surface of the mesh substrate; and{'sup': 2', '2, 'wherein the antibiotic is released from the nanofibers steadily for at least 14 days, and wherein the implantable medical prosthetic mesh has an antibiotic release rate in a range of 0.01 μg/(cm·min) to 10 μg/(cm·min).'}16. The method of claim 15 , wherein the ratio of the first solution/the second ...

CARTRIDGE FILTER USING NANOFIBER COMPOSITE FIBER YARN AND METHOD FOR MANUFACTURING SAME

Provided is a cartridge filter using nanofiber composite fiber yarn, the cartridge filter including: a core having a plurality of holes through which a liquid passes; and a filter medium wound around the core to collect an object to be filtered contained in the liquid, wherein the filter medium comprises composite fiber yarn in which a nanofiber web which is produced by accumulating nanofibers produced by an electrospinning method is laminated to a porous nonwoven fabric, to thus provide excellent durability and improved filtration performance. 1. A cartridge filter using nanofiber composite fiber yarn , the cartridge filter comprising:a core having a plurality of holes through which a liquid passes; and a filter medium wound around the core to collect an object to be filtered contained in the liquid, wherein the filter medium comprises composite fiber yarn in which a nanofiber web which is produced by accumulating nanofibers produced by an electrospinning method is laminated to a porous nonwoven fabric.2. The cartridge filter of claim 1 , wherein the composite fiber yarn uses nanofiber composite fiber yarn having an average pore size of less than 1 μm.3. The cartridge filter of claim 1 , wherein the composite fiber yarn is manufactured by slitting a nanofiber composite membrane which is formed by laminating a nanofiber web having nanofibers accumulated therein on a porous substrate to produce nanofiber tape yarn claim 1 , and twisting a plurality of strands of the nanofiber tape yarn.4. The cartridge filter of claim 1 , wherein the filter medium comprises nanofiber composite fiber yarn in which a plurality of filter media having different average pore sizes are laminated.5. The cartridge filter of claim 4 , wherein the filter media having a larger average pore size are stacked as the plurality of filter media are wound closer to the core.6. The cartridge filter of claim 1 , wherein the filter medium comprises: a porous member wound on an outer surface of the core; ...

Electrospinning of ptfe with high viscosity materials

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.

Polymer Electrospinning Apparatus

The present invention relates to an apparatus for producing electrospun polymer fibres with a modified surface, processes for producing a polymer fibre with a modified surface, non-woven polymer fibre mats or meshes comprising an electrospun polymer fibre, including multi-layered electrospun polymer fibre meshes, and a kit including a directional plasma device. 1. A plasma-electrospinning apparatus comprising a polymer electrospinning device for producing a polymer fibre and a directional plasma device , the directional plasma device being a plasma torch or a plasma plume-generating device , whereby the directional plasma device is arranged so that , during operation , a polymer composition from the polymer electrospinning device passes through a plasma jet or plasma plume from the directional plasma device.2. The plasma-electrospinning apparatus according to claim 1 , wherein the directional plasma device is arranged so the plasma jet or plume extends at an angle more than 0° with respect to the overall direction of the jet of polymer composition along the polymer path from the polymer solution outlet to the polymer fibre collector.3. The plasma-electrospinning apparatus according to claim 1 , wherein the plasma electrode tip is arranged coaxially to the direction of the polymer path from the polymer composition outlet to the polymer fibre collector.4. The plasma-electrospinning apparatus according to claim 3 , wherein the plasma electrode is tubular and forms the gas carrier conduit claim 3 , and the electrospinning capillary tube is located within the gas carrier conduit/plasma electrode.5. A plasma-electrospinning apparatus according to where the polymer electrospinning device comprises at least two different plasma zones claim 1 , whereby the plasma zones are arranged so that claim 1 , during operation claim 1 , the polymer composition from the electrospinning device passes through at least two distinct plasmas.6. The plasma-electrospinning apparatus according ...

Electrospun PNIPAAm/PCL Fiber Mats for Aligned Cell Sheets

The present invention provides compositions comprising aligned fibers of electrospun PNIPAAm and poly (ε-caprolactone) (PCL) (denoted PNIPAAm/PCL fibers). The PNIPAAm/PCL compositions enable enhanced growth and detachment of intact anisotropic cell sheets. The compositions do not require chemical modification or resource-intensive techniques, thus saving time and expense, and have the potential to generate tissue-specific, aligned cell sheets for transplant studies. 1. A fiber mat comprising poly(N-isopropylacrylamide) (PNIPAAm) and poly(caprolactone) (PCL) , wherein the ratio of PNIPAAm to PCL is between 50% (1:1 PNIPAAm:PCL) to 99% (99:1 PNIPAAm:PCL).2. The fiber mat of claim 1 , wherein the ratio of PNIPAAm to PCL is 90% (9:1 PNIPAAm:PCL).3. The fiber mat of claim 1 , wherein the ratio of PNIPAAm to PCL is 75% (3:1 PNIPAAm:PCL).4. The fiber mat of claim 1 , having fibers with a diameter between about 1 and 3 μm.5. The fiber mat of claim 1 , having fibers formed from a PNIPAAm core and a PCL shell.6. The fiber mat of claim 1 , having PNIPAAm fibers and PCL fibers.7. The fiber mat of claim 1 , having fibers arranged substantially in parallel.8. A method of making an anisotropic cell sheet claim 1 , comprising the steps of:electrospinning a solution comprising poly(N-isopropylacrylamide) (PNIPAAm) and poly(caprolactone) (PCL) to generate a fiber mat having fibers in substantially parallel alignment;culturing cells on the fiber mat in an environment above about 32° C. to form an anisotropic sheet of cells attached to the fiber mat; andintroducing the fiber mat to an aqueous environment below about 32° C. to release an intact anisotropic sheet of cells.9. The method of claim 8 , wherein the solution comprises a PNIPAAm and PCL mixture having a PNIPAAm to PCL ratio of between 50% (1:1 PNIPAAm:PCL) to 99% (99:1 PNIPAAm:PCL).10. The method of claim 8 , wherein the PNIPAAm to PCL ratio is 90% (9:1 PNIPAAm:PCL).11. The method of claim 8 , wherein the PNIPAAm to PCL ratio ...

Bioerodible drug delivery implants

Disclosed herein are bioerodible drug delivery devices including one or more active agents, and related methods. The devices are useful for administering a wide variety of agents over prolonged periods of time.

FUEL WATER SEPARATION FILTER MEDIUM FOR REMOVING WATER FROM WATER-HYDROCARBON EMULSIONS HAVING IMPROVED EFFICIENCY

A fuel water separation medium for removing water from water-hydrocarbon emulsions is provided, wherein the fuel water separation medium comprises (A) a first layer comprising nanofibers, and (B) a second layer comprising a fibrous web wherein the fibrous web comprises cellulosic fibers. 1. A fuel water separation medium for removing water from water-hydrocarbon emulsions comprising(A) a first layer comprising nanofibers,(B) a second layer comprising a fibrous web, wherein the fibrous web comprises cellulosic fibers;wherein the nanofibers have an average fiber diameter of about 50-350 nm, such as about 100-300 nm;{'sup': 2', '2, 'wherein the fuel water separation medium has a basis weight of about 100-300 g/m, such as about 150-300 g/m;'}wherein the fuel water separation medium is characterized by having a net change in water removal efficiency measured according to SAEJ1488 being preferably less than about 10%, more preferably less than about 5 and {'br': None, 'net change in water removal efficiency=water removal efficiency after 165 min−water removal efficiency after 15 min.'}, 'wherein the net change in water removal efficiency is defined as follows2. The filter medium according to claim 1 , wherein the filter medium is characterized by a TSI aerosol penetration of less than or equal to about 15% claim 1 , preferably less than or equal to about 10% claim 1 , more preferably less than or equal to about 5%.3. The filter medium according to any one of or claim 1 , wherein the filter medium is characterized by a mean flow pore size of about 2-10 microns.4. The medium according to any of the preceding claims claim 1 , wherein the fibrous web of the second layer is a wet-laid fibrous web.5. The medium according to any of the preceding claims claim 1 , wherein the nanofibers are synthetic nanofibers selected from polyethersulfone (PES); polyacrylonitrile; polyamide (PA) such as nylon; and fluoropolymer such as polyvinylfluoride (PVDF); and/or mixtures thereof.6. The ...

ELECTROSPINNING OF PTFE WITH HIGH VISCOSITY MATERIALS

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. 1. In combination , a surface formed of metal , ceramic or polymeric material and a coating of spun polytetrafluoroethylene (PTFE) on at least a portion of the surface.2. The combination of claim 1 , wherein the surface is a device claim 1 , and the coating is sintered in place on the device.3. The combination of claim 1 , wherein the spun PTFE is electrospun PTFE that has been electrospun from a dispersion comprising PTFE claim 1 , a fiberizing polymer and a solvent.4. A nonwoven mat comprising a plurality of spun polytetrafluoroethylene fibers.5. The mat of claim 4 , wherein the plurality of polytetrafluoroethylene fibers exhibit uniform diameter.6. The mat of deposited on a cylindrical surface as a coating and sintered in place on the cylindrical surface.7. The mat of claim 4 , wherein the spun polytetrafluoroethylene fibers are electrospun polytetrafluoroethylene fibers.8. The mat of claim 4 , wherein fewer than 20% of the plurality of spun polytetrafluoroethylene fibers are in the form of broken fibers.9. The mat of claim 4 , wherein the polytetrafluoroethylene has an average molecular weight of about 10Da to 10Da.10. The mat of claim 4 , wherein the mat has a tensile strength normalized to 1 mil thickness claim 4 , calculated by dividing measured tensile strength by thickness ...

FABRIC MATERIAL COMPOSITE CONSTRUCTION FOR USE AS A FILTER MEANS

A fabric material composite construction, for use as a filter means or media, characterized in that said construction comprises a combination of one or more nanofiber layers and a synthetic single-thread squarely knitted precision fabric. 111-. (canceled)12. A method for protecting inner parts of a cellular phone from magnetic and powder particles , comprisingproviding a composite filtering fabric material, said composite and protective fabric material consisting of a woven or knitted fabric made of a synthetic thread and having square openings with a square opening size from 5 μm to 2000 μm and supporting one or more layers of nanofibers having a nanofiber diameter from 100 to 900 nm, said nanofibers being embedded in said woven or knitted fabric thereby forming with said woven or knitted fabric a cohesively bound single filtering means adapted to prevent particles having a particle size from 1 to 2 μm from passing through, and said composite filtering and protecting fabric material having an acoustical impedance adapted to allow sound waves to pass through said fabric material, said synthetic thread being selected from the group consisting of polyester, polyamide, polypropylene, polyphenylsulphide, PEEK, PVD and PTFE, organic fluorine polymers, PA 6, PA 6/12, polyaramide, PUR, PES, PVA, PVAC, PAN, PEO, PS, polythiophene electroconductive polymers, kitosan, keratine, collagen and peptide biopolymers, said filtering means having a filtering efficiency of 99% for particles having a particle size up to 2 μm, said nanofibers being plasma processed nanofibers thereby improving an adhesion of said nanofibers to said supporting fabric,protecting said inner parts of said cellular phone from magnetic and powder particles by use of said composite filtering fabric material, including preventing particles having a particle size from 1 to 2 μm from passing through said composite filtering fabric material and allowing sound waves to pass through said composite filtering fabric ...

Filling material and process for making same

The filling material includes down with synthetic fibers having particles present on the surface of the fibers. The particles are characterized by a configuration which allows attachment of the down to the fibers. The associated method of manufacturing the filling material includes steps of obtaining a quantity of down and a quantity of synthetic fibers having particles on the surface thereof, wherein the particles allow attachment of the down to the fibers. The down and fibers are blended together to produce the filling material.

PROTON-EXCHANGE MEMBRANE

A proton-exchange membrane includes a polymer matrix, polymer fibers, or a combination thereof. The proton-exchange membrane also includes a proton-conducting material distributed on the polymer matrix, on the polymer fibers, in the polymer fibers, or a combination thereof. 1. A proton-exchange membrane comprising:a polymer matrix, polymer fibers, or a combination thereof; anda proton-conducting material distributed in the polymer matrix, on the polymer fibers, in the polymer fibers, or a combination thereof.2. The membrane of claim 1 , wherein the membrane comprises particles of the proton-conducting material.3. The membrane of claim 1 , wherein the membrane comprises the polymer fibers with the proton-conducting material distributed on the polymer fibers claim 1 , in the polymer fibers claim 1 , or a combination thereof.4. The membrane of claim 1 , wherein the membrane comprises the polymer matrix with the proton-conducting material distributed in the polymer matrix.5. The membrane of claim 4 , wherein the proton-conducting material comprises proton-conducting nanofibers.6. The membrane of claim 1 , wherein the proton-conducting inorganic material comprises an alkali thio-hydroxo metal claim 1 , an alkali thio-hydroxo metalloid claim 1 , a pyrophosphate claim 1 , an ultraphosphate claim 1 , or a combination thereof.7. The membrane of claim 1 , wherein the proton-conducting material comprises cesium thio-hydroxogermanate (CTHG) claim 1 , cerium ultraphosphate claim 1 , cesium ultraphosphate claim 1 , or a combination thereof.8. The membrane of claim 1 , comprising:the polymer matrix comprising polybenzimidazole (PBI); and a core that is continuous along a length of the nanofiber and that comprises the proton-conducting inorganic material, the proton-conducting inorganic material comprising an alkali thio-hydroxogermanate (ATHG), an ultraphosphate, a pyrophosphate, or a combination thereof, and', 'a shell that is continuous along the length of the nanofiber, the ...

Composite Membrane and Method for Manufacturing Such a Membrane

The present invention relates to a composite membrane () comprising a fibrous fabric () of nanofibres (), wherein the thickness of the fabric () is between 10 nm and 50 μm and said fabric is impregnated with a wetting liquid (A). According to the invention, the composite membrane is immersed in a second fluid (B) which is immiscible with the wetting liquid (A), forming an A/B interface between the wetting liquid (A) and the immiscible fluid (B), and the composite membrane is capable of remaining tensioned when it is compressed from its resting state until reaching dimensions corresponding to 5% of its dimensions in the resting state, and when it is stretched from its compressed state until reaching dimensions corresponding to 2000% of the length in the compressed state. The present invention also relates to a process for manufacturing such a membrane. 1. A composite membrane comprising a fibrous fabric of nanofibers , the thickness of the fabric being between 10 nm and 50 μm , said fabric being impregnated with a wetting liquid , said composite membrane being characterized:in that it is immersed in a second fluid which is immiscible with the wetting liquid, forming an A/B interface between the wetting liquid and said immiscible fluid, and when it is compressed from its resting state, until reaching dimensions corresponding to 5% of its dimensions in the resting state, and', 'when it is stretched from its compressed state until reaching dimensions corresponding to 2000% of the length of the compressed state., 'in that it is capable of remaining tensioned2. The composite membrane as claimed in claim 1 , wherein the thickness of said fibrous fabric is between 500 nm and 30 μm claim 1 , and preferably between 1 μm and 5 μm.3. The composite membrane as claimed in claim 2 , wherein said nanofibers of the fibrous fabric have a diameter of between 100 nm and 500 nm claim 2 , and preferably of about 200 nm.4. The hybrid membrane as claimed in claim 1 , wherein said A/B ...

Methods of Delivering a Health Care Active by Administering Personal Health Care Articles Comprising a Filmament

A method of delivering a health care active having the steps of administering to a mammal in need of a health benefit or a treatment for a health condition a personal health care article and consuming the article. The article contains one or more filaments that contain a backbone material, a health care active and optionally aesthetic agents, extensional aids, plasticizers, and crosslinking agents. 1. A personal health care article comprising: i. from about 10% to about 80%, by weight on a dry filament basis, of a backbone material;', 'ii. greater than about 50%, by weight on a dry filament basis, of a first health care active wherein said health care active is releasable from said filament wherein said filament is exposed to conditions of intended use; and', 'iii. less than about 10%, by weight of the filament, moisture;, 'a. one or more interwoven filaments, wherein the filaments comprisewherein the personal health care article is administrable via the oral cavity.2. The personal health care article of wherein the one or more interwoven filaments are selected from the group consisting of meltblown filaments claim 1 , spunbond filaments claim 1 , and mixtures thereof.5. The personal health care article of claim 1 , wherein the backbone material is selected from the group consisting of polymers claim 1 , sugars claim 1 , and combinations thereof.6. The personal health care article of claim 5 , wherein the backbone material is a polymer.7. The personal health care article of claim 6 , wherein the polymer is selected from the group consisting of polyvinyl alcohol claim 6 , pullulan claim 6 , pectin claim 6 , corn starch claim 6 , modified corn starch claim 6 , or hydroxypropyl methylcellulose claim 6 , and combinations thereof.8. The personal health care article of further comprising a coating composition comprising a second health care active.9. The personal health care article of wherein the second health care active is different from the first health care active.10 ...

BIOMEDICAL PATCHES WITH SPATIALLY ARRANGED FIBERS

A system and methods for producing a structure including a plurality of fibers is provided. The system includes a polymer collector having a predefined pattern, wherein the collector is charged at a first polarity, and a spinneret configured to dispense a polymer, wherein the spinneret is charged at a second polarity substantially opposite the first polarity such that polymer dispensed from the spinneret forms a plurality of fibers on the predefined pattern of the fiber collector. 1. A system for producing a structure including a plurality of fibers , the system comprising:a polymer collector having a predefined pattern, wherein the collector is charged at a first polarity; anda spinneret configured to dispense a polymer, wherein the spinneret is charged at a second polarity substantially opposite the first polarity such that polymer dispensed from the spinneret forms a plurality of fibers on the predefined pattern of the fiber collector.2. A system in accordance with claim 1 , further comprising a power supply configure to electrically charge the collector and the spinneret.3. A system in accordance with claim 1 , wherein the connector comprises a plurality of features that are interconnected to form the predefined pattern.4. A system in accordance with claim 3 , wherein the features include at least one of a plurality of ribs and a plurality of seams.5. A system in accordance with claim 4 , further comprising at least one surface positioned within the interconnected features.6. A system in accordance with claim 1 , wherein the predefined pattern is configured to produce a structure with at least two fiber densities.7. A system in accordance with claim 1 , wherein the predefined pattern of the collector is symmetrical.8. A system in accordance with claim 1 , wherein the predefined pattern of the collector is not symmetrical.9. A method for producing a structure including a plurality of fibers claim 1 , the method comprising:providing a collector with a predefined ...

Microstructured soft tissue graft

The present disclosure comprises micropatterned fabric, meshes, textiles, and implantable devices which may include having one substrate including a mesh, a second substrate having a microstructured surface, and a fibrous layer disposed therebetween. The fibrous layer comprises a plurality of randomly oriented fibers. The devices having the microstructured surface may include a plurality of first level microfeatures and a plurality of second level microfeatures wherein the plurality of second level microfeatures are disposed hierarchically the first level microfeatures. Also disclosed are methods for making such micropatterned fabric, meshes, textiles, and implantable devices

Biomedical patches with aligned fibers

A structure of aligned (e.g., radially and/or polygonally aligned) fibers, and systems and methods for producing and using the same. One or more structures provided may be created using an apparatus that includes one or more first electrodes that define an area and/or partially circumscribe an area. For example, a single first electrode may enclose the area, or a plurality of first electrode(s) may be positioned on at least a portion of the perimeter of the area. A second electrode is positioned within the area. Electrodes with rounded (e.g., convex) surfaces may be arranged in an array, and a fibrous structure created using such electrodes may include an array of wells at positions corresponding to the positions of the electrodes.

Ion exchange membrane and method for manufacturing same

A method for manufacturing an ion exchange membrane is provided. The method for manufacturing an ion exchange membrane, according to one embodiment of the present invention, comprises the step of electrospinning a support fiber producing solution and an ion exchange fiber producing solution respectively to prepare a laminate in which a support fiber mat consisting of a support fiber and an ion exchange fiber mat consisting of an ion exchange fiber are alternatively laminated. According to the present invention, it is possible to simply control factors, such as the thickness, electroconductivity and mechanical strength of the membrane, and the diameter/ratio of a pore, etc. to be suitable for the use of ion exchange membrane during the manufacturing process, to simplify the manufacturing process. As such, the ion exchange membrane manufactured by the method can be utilized as a universal ion exchange membrane which has a large ion exchange capacity, a small electrical resistance, and a small diffusion coefficient as well as excellent mechanical strength and durability.

ADHESIVE TAPE AND METHOD OF MANUFACTURING THE SAME

Provided is an adhesive tape including: a substrate; and an adhesive layer laminated on one surface or both surfaces of the substrate, wherein one or both of the substrate and the adhesive layer are produced in a nano-web form in which fiber strands are captured by a spinning method. Thus, the adhesive tape can be made thin, and an adhesive strength can be improved. In addition, the adhesive tape can be precisely attached on a corrugated surface. When the adhesive tape attached between components is separated from the components, the adhesive layers can be prevented from remaining on the surfaces of the components. 1. An adhesive tape comprising:a substrate; andan adhesive layer laminated on one surface or both surfaces of the substrate,wherein one or both of the substrate and the adhesive layer are produced in a nano-web form in which fiber strands are captured by a spinning method.2. The adhesive tape of claim 1 , wherein any one of general electrospinning claim 1 , air-electrospinning (AES) claim 1 , electrospray claim 1 , electrobrown spinning claim 1 , centrifugal electrospinning claim 1 , and flash-electrospinning is used as the spinning method.3. The adhesive tape of claim wherein a plurality of pores are formed in the substrate claim 1 , and an adhesive material for producing adhesive layers is injected into the plurality of pores.4. The adhesive tape of claim 3 , wherein the adhesive layers comprise a first adhesive layer that is stacked on one surface of the substrate claim 3 , and a second adhesive layer that is stacked on the other surface of the substrate claim 3 , in which the adhesive material that is obtained by mixing an adhesive and a solvent to have a viscosity sufficient for spinning is spun by using an electrospinning method.5. The adhesive tape of claim 4 , wherein a first release film is attached on the surface of the first adhesive layer claim 4 , and a second release film is attached on the surface of the second adhesive layer claim 4 , and ...

Nonwoven fabric and production method for nonwoven fabric

A nonwoven fabric comprising heat-expanding particles, having bulk and high strength, and a method for producing the nonwoven fabric. The method of producing a nonwoven fabric according to the invention comprises a step of supplying a first sheet-forming material comprising fiber and water onto a belt, to form a first sheet layer on the belt, a step of spraying a high-pressure water jet onto the first sheet layer to form grooves extending in the machine direction on the surface, a step of forming a second sheet-forming material comprising fibers, heat-expanding particles and water into a sheet to form a second sheet layer, a step of layering the first sheet layer and the second sheet layer to form a third sheet layer, a step of drying the third sheet layer, and a step of spraying high-pressure steam onto the third sheet layer to expand the heat-expanding particles. The nonwoven fabric of the invention is provided with a fiber-containing first layer having a plurality of grooves extending in the longitudinal direction and aligned in the transverse direction, on the first surface, and is provided with a second layer comprising expanded heat-expanding particles and fibers, on the second surface.

MATTE FILM AND METHOD OF MANUFACTURING THE SAME

Provided is matte film including: a film layer that is formed in a nano-web shape by electrospinning a polymer material; an ink layer that is coated on one surface of the film layer: and an adhesive layer that is laminated on the other surface of the film layer through electrospinning. Since the film layer is formed in a nano-web shape so that fiber strands are accumulated, the matte film can be thinly produced and have a non-glossy function of performing scattered reflection of light and a fingerprint-preventive function of making fingerprints imprinted. Further. the surface strength of the matte film can be reinforced.

Polymer Compositions and Nonwoven Compositions Prepared Therefrom

Described herein are propylene-based polymer compositions that comprise a reactor blend of a first polymer component and a second polymer component. The first polymer component has an ethylene content of from greater than 12 to less than 19 wt % ethylene, and the second polymer component has an ethylene content of from greater than 4 to less than 10 wt % ethylene. Preferably, the ethylene content of the first and second polymer components satisfy the formula: 1. A propylene-based polymer composition comprising a reactor blend of a first polymer component and a second polymer component ,{'sub': '1', 'wherein the first polymer component comprises propylene and ethylene and has an ethylene content Rof from greater than 12 to less than 19 wt % ethylene, where the percentage by weight is based upon the total weight of the propylene-derived and ethylene-derived units of the first polymer component,'}{'sub': '2', 'wherein the second polymer component comprises propylene and ethylene and has an ethylene content Rof from greater than 4 to less than 10 wt % ethylene, where the percentage by weight is based upon the total weight of the propylene-derived and ethylene-derived units of the second polymer component, and'} {'br': None, 'i': R', 'R', 'R, 'sub': 1', '2', '1, '−1.7143+29.771≦≦−1.9167+37.25.'}, 'wherein the ethylene content of the first and second polymer components satisfy the formula2. The propylene-based polymer composition of claim 1 , wherein the ethylene content of the first and second polymer components satisfy the formula:{'br': None, 'i': R', 'R', 'R, 'sub': 1', '2', '1, '−1.7143+30≦≦−1.9167+37.'}3. The propylene-based polymer composition of claim 1 , wherein the ethylene content of the first and second polymer components satisfy the formula:{'br': None, 'i': R', 'R', 'R, 'sub': 1', '2', '1, '−1.7143+31≦≦−1.9167+36.'}4. The propylene-based polymer composition of claim 1 , wherein the ethylene content of the propylene-based polymer composition is from 5 to 22 ...

NONWOVEN FABRIC AND FIBER PRODUCT

Provided is a spunbonded nonwoven fabric comprising a core-sheath composite fiber having a core part composed of a core component containing a propylene-based resin (A) satisfying the following (a) to (e) and a sheath part composed of a sheath component containing an ethylene-based resin. (a) [mmmm]=20 to 60 mol %, (b) [mm]×[rr]/[mr]≦2.0, (c) weight average molecular weight (Mw)=10,000 to 200,000, (d) molecular weight distribution (Mw/Mn)<4.0, and (e) a melting point (Tm-D), as defined as a peak top of a peak observed on the highest temperature side of a melting endothermic curve which is obtained by holding under a nitrogen atmosphere at −10° C. for 5 minutes and then increasing the temperature at a rate of 10° C./min with a differential scanning calorimeter (DSC), is from 0 to 120° C. 1. A spunbonded nonwoven fabric comprising a core-sheath composite fiber having a core part composed of a core component containing a propylene-based resin (A) satisfying the following (a) to (e) and a sheath part composed of a sheath component containing an ethylene-based resin:(a) [mmmm]=20 to 60 mol,{'sup': '2', '(b) [mm]×[rr]/[mr]≦2.0,'}(c) weight average molecular weight (Mw)=10,000 to 200,000,(d) molecular weight distribution (Mw/Mn)<4.0, and(e) a melting point (Tm-D), as defined as a peak top of a peak observed on the highest temperature side of a melting endothermic curve which is obtained by holding under a nitrogen atmosphere at −10° C. for 5 minutes and then increasing the temperature at a rate of 10° C./min with a differential scanning calorimeter (DSC), is from 0 to 120° C.2. The spunbonded nonwoven fabric according to claim 1 , wherein a content of the propylene-based resin (A) in the core component is 1 to 50% by mass.3. The spunbonded nonwoven fabric according to claim 1 , wherein the core component further contains a propylene-based resin (B) in which a melting point (Tm-D) claim 1 , as defined as a peak top of a peak observed on the highest temperature side of a ...

ELECTROSPINNING OF PTFE WITH HIGH VISCOSITY MATERIALS

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. 1. A polymeric material comprising: a membrane comprised of deposited polymeric fibers , the polymeric fibers having been expanded in a first direction after the fibers are deposited.2. The polymeric material of claim 1 , wherein the deposited fibers comprise sintered fibers.3. The polymeric material of claim 1 , wherein the deposited fibers are exposed to an elevated temperature.4. The polymeric material of claim 1 , wherein the deposited fibers are generally aligned in the first direction.5. The polymeric material of claim 1 , wherein the membrane is more resistant to creep in the first direction after the membrane is expanded.6. The polymeric material of claim 1 , wherein the deposited polymeric fibers have been expanded in a second direction.7. The polymeric material of claim 1 , wherein the deposited polymeric fibers comprise serially deposited polymeric fibers.8. A deposited fiber mat comprising a portion of a device claim 1 , the deposited fiber mat comprising deposited fibers claim 1 , wherein all of the fibers have diameters of 400 nm to 3200 nm.9. The deposited fiber mat of claim 8 , wherein the deposited fiber mat comprises spun polytetrafluoroethylene fibers.10. The deposited fiber mat of claim 8 , wherein all of the fibers have diameters from 800 nm to 2.4 μm.11. The ...

Electrospun material covered medical appliances and methods of manufacture

A medical appliance or prosthesis may comprise one or more layers of electrospun nanofibers, including electrospun polymers. The electrospun material may comprise layers including layers of polytetrafluoroethylene (PTFE). Electrospun nanofiber mats of certain porosities may permit tissue ingrowth into or attachment to the prosthesis.

BIOMEDICAL PATCHES WITH ALIGNED FIBERS

A multi-laminar electrospun nanofiber scaffold for use in repairing a defect in a tissue substrate is provided. The 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 combined with the first layer. A first portion of the scaffold includes a higher density of fibers than a second portion of the scaffold, and the first portion has a higher tensile strength than the second portion. The scaffold is configured to degrade via hydrolysis after at least one of a predetermined time or an environmental condition. The scaffold is configured to be applied to the tissue substrate containing the defect, and is sufficiently flexible to facilitate application of the scaffold to uneven surfaces of the tissue substrate, and to enable movement of the scaffold by the tissue substrate. 1. A biomedical patch device for tissue repair , the biomedical patch device comprising:a first structure of fibers having electrospun nanofibers, the first structure of fibers configured to promote cell growth; anda second structure of fibers having electrospun nanofibers, the second structure of fibers configured to promote cell growth,the first structure of fibers comprising a different composition from the second structure of fibers;the biomedical patch device further comprising a surface, wherein the surface comprises a surface pattern configured to contact tissue,the surface pattern, the first structure of fibers, and the second structure of fibers configured to promote cell growth in one or more defined directions,the biomedical patch device sufficiently flexible to facilitate application of the biomedical patch device to uneven surfaces of the tissue,the biomedical patch device sufficiently flexible to enable movement of the biomedical patch device with the tissue, andwherein the first structure of fibers and the second structure of fibers are configured to ...

METHOD FOR THE ADHESION OF PARTICLES TO AN INERT SUBSTRATE

The present invention relates to a method for adhering particles with exceptional functional properties, such as hydrophobia, to an inert substrate. The present invention falls within the area of nanotechnology, specifically in the sector where it is necessary to modify the surface properties of a material or substance, such as the food, pharmaceutical, biomedical or energy sector. 1. A method for adhering particles to an inert substrate , characterized in that it comprises the following steps:a) deposit adhesive fibers on an inert substrate by means of an electro-hydrodynamic or aero-hydrodynamic process or a combination of both processes;b) optionally, thermally treat the deposit obtained in (a) at a temperature lower than the melting or degradation temperature of the adhesive fibers for a period of time between 0.1 s and 1 h;c) homogeneously distribute particles of a size between 0.001 nm and 100 μm on the adhesive fibers obtained in step (a) or (b) by means of deposition; andd) thermally treat the deposit obtained in (c) at a temperature lower than the melting or degradation temperature of the adhesive fibers for a period of time between 0.1 s and 1 h.2. The method according to claim 1 , characterized in that it comprises the following steps:a) deposit adhesive fibers on an inert substrate by means of an electro-hydrodynamic or aero-hydrodynamic process or a combination of both processes;b) thermally treat the deposit obtained in (a) at a temperature lower than the melting or degradation temperature of the adhesive fibers for a period of time between 0.1 s and 1 h;c) homogeneously distribute particles of a size between 0.001 nm and 100 μm on the adhesive fibers obtained in step (a) or (b) by means of deposition; andd) thermally treat the deposit obtained in (c) at a temperature lower than the melting or degradation temperature of the adhesive fibers used in step (a) for a period of time between 0.1 s and 1 h.3. The method according to any of or claim 1 , ...

POLYMER COMPOSITE AND METHOD OF FORMING SAME

In accordance with one embodiment, a polymer composite comprises a filler and a matrix. The filler comprises an electrospun polymer mat. The matrix comprises a polymer film. The filler is arranged to respond to stimuli by altering its mechanical properties. In one example, the mat can be electrospun from poly(vinyl alcohol), and the matrix can be formed from ethylene oxide-epichlorohydrin 1:1 copolymer. The filler can be arranged so that the tensile storage modulus of the polymer composite changes in response to the filler being exposed to a stimulus. In another example, the filler is about four percent by weight of the polymer composite. 1. A polymer composite comprising:a filler comprising an electrospun polymer mat;a matrix comprising a polymer film;wherein the filler is arranged to respond to a stimulus so that the mechanical properties of the polymer composite change.2. The polymer composite of claim 1 , wherein the filler is electrospun from poly(vinyl alcohol).3. The polymer composite of claim 1 , wherein the polymer film is formed from ethylene oxide-epichlorohydrin 1:1 copolymer.4. The polymer composite of claim 1 , wherein the filler is about four percent by weight of the polymer composite.5. The polymer composite of claim 1 , wherein the filler can be arranged so that the tensile storage modulus of the polymer composite changes in response to the filler being exposed to a stimulus.6. The polymer composite of claim 1 , wherein the filler can be arranged so that the transparency of the polymer composite changes in response to the filler being exposed to a stimulus.7. The polymer composite of claim 1 , wherein the filler can be arranged so that the shape memory of the polymer composite changes in response to the filler being exposed to a stimulus. This application claims priority to and the full benefit of U.S. Provisional Patent Application Ser. No. 61/495,942 filed Jun. 10, 2011, and titled “Articles Mimicking Naturally Occurring Materials and Structures ...

FABRIC MATERIAL COMPOSITE CONSTRUCTION FOR USE AS A FILTER MEANS

A fabric material composite construction, for use as a filter means or media, characterized in that said construction comprises a combination of one or more nanofiber layers and a synthetic single-thread squarely knitted precision fabric. 111-. (canceled)12. An acoustical device having parts to be protected from magnetic and powder particles , comprising a composite filtering fabric material protecting said parts of said device from magnetic and powder particles , said composite and protective fabric material consisting of a woven or knitted fabric made of a synthetic thread and having square openings with a square opening size from 5 μm to 2000 μm and supporting one or more layers of nanofibers having a nanofiber diameter from 100 to 900 nm , said nanofibers being embedded in said woven or knitted fabric thereby forming with said woven or knitted fabric a cohesively bound single filtering means preventing particles having a particle size from 1 to 2 μm from passing through , said composite filtering and protecting fabric material having an acoustical impedance allowing sound waves to pass through said fabric material , said synthetic thread being selected from the group consisting of polyester , polyamide , polypropylene , polyphenylsulphide , PEEK , PVD and PTFE , organic fluorine polymers , PA 6 , PA 6/12 , polyaramide , PUR , PES , PVA , PVAC , PAN , PEO , PS , polythiophene electroconductive polymers , kitosan , keratine , collagen and peptide biopolymers , said filtering means having a filtering efficiency of 99% for particles having a particle size up to 2 μm , said nanofibers being plasma processed nanofibers thereby improving an adhesion of said nanofibers to said supporting fabric.13. The acoustical device according to claim 12 , wherein said composite filtering fabric material further comprises an additional fabric material layer arranged on said nanofibers.14. The acoustical device according to claim 12 , wherein said nanofibers are coated either on ...

Planar composite material

A planar composite material comprises an UD fiber layer A made of discrete reinforcing fiber rovings and a fiber nonwoven layer B made of a thermoplastic nonwoven which may contain reinforcing fibers, wherein the layers A and B are needled to each other.

System and method for automating production of electrospun textile products

A system and method for producing a textile product which includes an insulated enclosure; an electrospinning dispensing system positioned along at least one face of the insulated enclosure; a solution supply system with a solution transport connection to the electrospinning dispensing system; a mold structure; a cyclical mold actuator mechanically coupled to the mold structure; and a charge unit electrically connected to the electrospinning dispensing system and the mold structure.

ACTIVE-ESTER-GROUP-CONTAINING COMPOSITION FOR PRODUCING FIBERS, AND CELL CULTURE SCAFFOLD MATERIAL USING FIBERS PRODUCED FROM ACTIVE-ESTER-GROUP-CONTAINING COMPOSITION

A composition for producing a fiber, containing (A) a polymer compound containing a unit structure represented by the formula (1) and a unit structure represented by the formula (2), (B) a crosslinking agent, (C) an acid compound, and (D) a solvent 3. The composition according to claim 1 , wherein the above-mentioned polymer compound has a weight average molecular weight of 1 claim 1 ,000-1 claim 1 ,000 claim 1 ,000.4. The composition according to claim 1 , wherein the above-mentioned solvent is a polar solvent.5. A production method of a fiber claim 1 , comprising a step of spinning the composition according to .6. The method according to claim 5 , wherein the above-mentioned spinning is electrospinning.7. The method according to claim 5 , comprising a step of heating a spun fiber at 70-300° C.8. The method according to claim 5 , further comprising a step for immobilizing a cell adhesion substance.9. A fiber produced by the method according to .10. A cell culture scaffold material comprising the fiber according to . The present invention relates to a composition for producing a fiber, which comprises a polymer compound having an active ester group and a hydroxy group in a side chain, a crosslinking agent, an acid compound, and a solvent, a fiber superior in organic solvent resistance, which is obtained by spinning (preferably, further heating) the composition, and a cell culture scaffold material using the fiber.In the bone marrow and basal lamina in the body, cells grow and proliferate in an extracellular matrix constituted of a fiber-like structure of a nano level such as collagen and the like. To provide cells necessary for cell medicine and regenerative medicine, a scaffold material for cell culture that enables efficient culture of cells ex vivo is desired. It is preferable that such cell culture scaffold material mimic as much as possible the in vivo environment surrounding the cell.It has conventionally been studied to process matrix constituent materials ...

Polypeptide Electrospun Nanofibrils of Defined Composition

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. 1. A method of preparing an electrospun nanofibril , comprising:dissolving at least one polypeptide in a solvent to form a solution; andelectrospinning the solution to form the electrospun nanofibril.2. The method according to claim 1 , wherein the at least one polypeptide comprises poly(L-glutamate claim 1 , tyrosine) or poly(L-ornithine).3. The method according to claim 1 , wherein a diameter of the nanofibril is less than a micron.4. The method according to claim 1 , wherein electrospinning the solution comprises electrospinning the solution in an electric field of from about 10V/m to about 7×10V/m.5. The method according to claim 1 , wherein the solvent is water.6. The method according to claim 1 , wherein the at least one polypeptide is poly(L-ornithine).7. The method according to claim 1 , wherein the at least one polypeptide is poly(L-glutamate claim 1 , tyrosine).8. The method according to claim 1 , wherein the at least one polypeptide is present in the solution at a concentration in a range of from 1% to 65% (w/v).9. The method according to claim 1 , wherein the at least one polypeptide is present in the solution at a concentration in a range of from 10% to 55% (w/v).10. The method according to claim 1 , wherein the at least one polypeptide is present in the solution at a concentration in a range of from about 50% to about 55% (w/v).11. The method according to claim 8 , wherein the at least one polypeptide is dissolved in the solvent at a temperature in a range of from 20° C. to 30° C.12. The method according to claim 11 , wherein the solvent is water.13. The method according to claim 1 , ...

Hydrophilic polyurethane nanofiber and method for manufacturing same

The present disclosure is to provide a method for producing polyurethane (PU) nanofibers with significantly improved hydrophilicity by producing water-soluble polymer/PU blend nanofiber by coaxial-electrospinning water-soluble polymer and hydrophobic PU, and, subsequently, dissolving and removing the water-soluble polymer from the blend nanofiber in water.

NONWOVEN FABRIC HAVING IMPROVED FLUID MANAGEMENT PROPERTIES

A nonwoven fabric having improved fluid management properties is provided. The fabric is formed of a plurality of the fibers that include at least an aliphatic polyester polymer. The aliphatic polyester polymer defines at least a portion of an outer surface of the fibers, and includes a natural-based finish composition that is adhered thereto. 1. A nonwoven fabric comprising a plurality of fibers that are bonded to each other to form a coherent web , the fibers comprising an aliphatic polyester polymer defining at least a portion of an outer surface of the fibers , and wherein a natural-based finish composition is disposed on at least a portion of the outer surface of the fibers.2. The nonwoven fabric of claim 1 , wherein the fibers comprise multicomponent fibers having a bicomponent configuration claim 1 , in which a first polymer component comprises the aliphatic polyester polymer and defines a sheath of the fibers claim 1 , and a second polymer component comprises a polyolefin polymer defining a core of the fibers.3. The nonwoven fabric according to claim 2 , wherein the aliphatic polyester polymer comprises polylactic acid claim 2 , and the polyolefin polymer comprises polypropylene polymer.4. The nonwoven fabric of claim 1 , wherein the fibers comprise a bio-based aliphatic polyester polymer.5. The nonwoven fabric of claim 4 , wherein the fibers have a sheath core configuration claim 4 , and the bio-based aliphatic polyester polymer defines the sheath claim 4 , and a second polymer component comprising a bio-based polymer is the core.6. The nonwoven fabric according to claim 1 , wherein the natural-based finish composition comprises a plant or animal based protein.7. The nonwoven fabric according to claim 1 , wherein the natural-based finish composition comprises a soy protein isolate.8. The nonwoven fabric according to claim 1 , wherein the natural-based finish composition is present in an amount ranging from about 0.2 to 2 weight percent claim 1 , based on ...

FABRIC HAVING TOBACCO ENTANGLED WITH STRUCTURAL FIBERS

A smokeless tobacco product includes smokeless tobacco and structural fibers. The structural fibers forming a network in which the smokeless tobacco is entangled. The structural fibers have a composition different from the smokeless tobacco. The tobacco-entangled fabric can have an overall oven volatiles content of at least 10 weight percent. In some embodiments, the structural fibers form a nonwoven network. In some embodiments, fibrous structures of the smokeless tobacco are entangled with the structural fibers. 1. (canceled)2. A smokeless tobacco product comprising:smokeless tobacco; anda pouch surrounding the smokeless tobacco, the pouch being porous and including, elastomeric fibers.3. The smokeless tobacco product of claim 2 , wherein the elastomeric fibers include polyurethane.4. The smokeless tobacco product of claim 2 , wherein the pouch includes a fabric including the elastomeric fibers.5. The smokeless tobacco product of claim 4 , wherein the elastomeric fibers include non-woven elastomeric fibers.6. The smokeless tobacco product of claim 4 , wherein the fabric has a basis weight ranging from 1 gram per square meter (gsm) to 350 gsm.7. The smokeless tobacco product of claim 6 , wherein the basis weight is 30 gsm.8. The smokeless tobacco product of claim 6 , wherein the basis weight is 21 gsm.9. The smokeless tobacco product of claim 6 , wherein the basis weight is 15 gsm.10. The smokeless tobacco product of claim 2 , wherein the elastomeric fibers have diameters of less than 30 microns.11. The smokeless tobacco product of claim 10 , wherein the diameters range from 0.5 microns to 30 microns.12. The smokeless tobacco product of claim 11 , wherein the diameters range from 0.5 microns to 5 microns.13. The smokeless tobacco product of claim 2 , wherein the elastomeric fibers have diameters ranging from 1 micron to 50 microns.14. The smokeless tobacco product of claim 2 , wherein the elastomeric fibers include melt-blown fibers.15. The smokeless tobacco ...

BIOMEDICAL PATCHES WITH ALIGNED FIBERS

A multi-laminar electrospun nanofiber scaffold for use in repairing a defect in a tissue substrate is provided. The 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 combined with the first layer. A first portion of the scaffold includes a higher density of fibers than a second portion of the scaffold, and the first portion has a higher tensile strength than the second portion. The scaffold is configured to degrade via hydrolysis after at least one of a predetermined time or an environmental condition. The scaffold is configured to be applied to the tissue substrate containing the defect, and is sufficiently flexible to facilitate application of the scaffold to uneven surfaces of the tissue substrate, and to enable movement of the scaffold by the tissue substrate. 1. A biomedical patch device for tissue repair , the biomedical patch device comprising: a first plurality of electrospun fibers comprising a first polymer, the first polymer comprising glycolic acid; and', 'a second plurality of electrospun fibers comprising a second polymer, the second polymer comprising caprolactone,', 'the first polymer comprising a different composition from the second polymer;, 'a structure of deposited electrospun fibers comprising a plurality of fibers, the plurality of fibers comprising a first direction substantially parallel to a plane of a surface of the biomedical patch; and', 'a second direction substantially perpendicular to the plane of the surface of the biomedical patch,, 'the plurality of fibers organized in a configuration to promote three-dimensional migration of cells in a plurality of defined directions, the plurality of directions comprisingthe surface of the biomedical patch comprising a surface pattern configured to contact tissue,the biomedical patch device sufficiently flexible to facilitate application of the biomedical ...

Regenerable oxide-based adsorbent

A zinc titanate reactive adsorbent comprising multiphase, polycrystalline nanofibers comprising ZnTiO 3 , ZnO, TiO 2 , and Zn 2 TiO 4 .

Electrospun-coated medical devices

Compositions comprising electrospun fibers and pharmaceutical agents encapsulated thereto are provided. Further, articles such as medical devices and methods of use of said fibers, including, but not limited to coating of medical tubes, are provided.

NANOFIBERS

The present invention relates to nanofibers. In particular, the present invention relates to potassium niobate nanofibers. In an aspect of the present invention, there is provided a method of preparing the nanofibers, the method comprising: (a) dissolving niobium chloride and potassium sorbate in a solvent to obtain a first solution; (b) removing chloride precipitates formed from the first solution; (c) adding a polymer, for example polymethylmethacrylate or polyvinylpyrrolidone to the solution to obtain a second spinnable solution; and (d) electrospinning the spinnable solution to produce the fibers. The application also discloses the application of such nanofibers in the manufacture of a humidity sensor device by sputtering a metal such as Tantalum on top of the nanofibers. 1. A method of preparing fibers , the method comprising:(a) dissolving niobium chloride and potassium sorbate in a solvent to obtain a first solution;(b) removing chloride precipitates formed from the first solution;(c) adding a polymer to the solution to obtain a second spinnable solution; and(d) electrospinning the spinnable solution to produce the fibers.2. The method according to claim 1 , wherein the polymer is any one selected from the group comprising: polyvinylpyrrolidone claim 1 , poly(methyl methacrylate) claim 1 , cellulose acetate claim 1 , polyacrylonitrile claim 1 , polyvinyl alcohol and polyethylene oxide.3. The method according to claim 1 , wherein the solvent is an alcohol.4. The method according to claim 3 , wherein the alcohol is any one selected from the group comprising: methanol claim 3 , ethanol and 2-methoxyethanol dimethylformamide.5. The method according to claim 1 , wherein the molar ratio between potassium and niobium after removing the chloride precipitates is about 1.6. The method according to claim 1 , wherein the electrospinning is carried out by ejecting the spinnable solution from a plastic syringe at a constant feed rate of 0.60 ml/hour.7. The method according ...

MEMBRANE

The invention relates to a therapeutic composition comprising an inner portion and a biocompatible membrane fully or partially surrounding the inner portion. The biocompatible membrane comprises at least two layers: a first layer of a porous, nonwoven network of thermoplastic polyurethane polymer fibers formed by electrospinning and having a porosity of greater than or equal to 50%; an average pore diameter of less than 5 μm; and has a thickness in the range 10 to 250 μm; and a second layer of a porous, nonwoven network of thermoplastic polymer fibers formed by electrospinning. The second layer has a mean average fiber diameter of the second layer is greater than the mean average fiber diameter in the first layer, and/or wherein the average pore diameter of the second layer is greater than the average pore diameter of the first layer. The inner portion comprises a therapeutic agent. The invention also relates to uses of the membrane and therapeutic composition, for instance, to encapsulate therapeutic cells. 1567410. A therapeutic composition ( ,) comprising an inner portion () and a biocompatible membrane ( , ) fully or partially surrounding the inner portion; wherein the biocompatible membrane comprises at least two layers:{'b': '1', 'a first layer () of a porous, non-woven network of thermoplastic polyurethane polymer fibres formed by electrospinning and having a porosity of greater than or equal to 50%; an average pore diameter of less than 5 μm; and has a thickness in the range of 10 to 250 μm; wherein the first layer is non-biodegradable; and'}{'b': 2', '2', '1', '2', '1', '2', '1, 'a second layer () of a porous, non-woven network of thermoplastic polymer fibres formed by electrospinning, the second layer () having a porosity which is substantially equal to or higher than the porosity of the first layer (); and/or wherein the mean average fibre diameter of the second layer () is greater than the mean average fibre diameter in the first layer (); and/or wherein ...

Wettable SMS Material for Personal Protective Equipment Applications

A wettable SMS material for personal protective equipment, such as a SMS fabric that has been treated to improve the wettability and absorbency properties of the SMS fabric is provided. A treated SMS fabric for personal protective equipment can retain its durability, breathability, and comfort, and may also provide the fabric with wettability and absorption properties. An article for personal protective equipment formed from a wettable SMS fabric is also provided. 1. A wettable spunbond-meltblown-spunbond (SMS) material for use in personal protective equipment , comprising:a spunbond-meltblown-spunbond laminate;a surfactant, wherein the surfactant comprises an anionic surfactant, a cationic surfactant, or combinations thereof;where the spunbond-meltblown-spunbond material is configured to dry after exposure to a liquid; andwherein the spunbond-meltblown-spunbond material is configured to absorb a liquid.2. The wettable spunbond-meltblown-spunbond (SMS) material of claim 1 , wherein the spunbond-meltblown-spunbond material is configured to absorb liquid from a surface.3. The wettable spunbond-meltblown-spunbond (SMS) material of claim 2 , wherein the surface is skin.4. The wettable spunbond-meltblown-spunbond (SMS) material of claim 1 , wherein the spunbond-meltblown-spunbond material comprises a polyolefin based polymer.5. The wettable spunbond-meltblown-spunbond (SMS) material of claim 4 , wherein the surfactant is applied to the polyolefin based polymer.6. The wettable spunbond-meltblown-spunbond (SMS) material of claim 5 , wherein the polyolefin based polymer is hydrophobic prior to application of the surfactant to the polyolefin based polymer.7. The wettable spunbond-meltblown-spunbond (SMS) material of claim 4 , wherein the polyolefin based polymer includes a polypropylene and random co-polymer resin.8. The wettable spunbond-meltblown-spunbond (SMS) material of claim 1 , wherein the wettable spunbond-meltblown-spunbond (SMS) material has a weight claim 1 , and ...

ELECTROSPUN ANTI-ADHESION BARRIER

An article includes a fibrous mat of poly(glycerol sebacate) (PGS) resin and a resin of a hydrogel forming polymer, such as a polyvinyl alcohol (PVOH). Methods of making such articles include electrospinning a combination of PGS resin and PVOH resin to form nanofibers and depositing the nanofibers onto a surface to form the fibrous mat. The mat is suitable for a variety of medical uses, including as a barrier that can be deployed in surgical procedures. 1. A method comprisingelectrospinning a combination of poly(glycerol sebacate) (PGS) resin and a hydrogel forming polymer resin to form nanofibers; anddepositing the nanofibers onto a surface to form a fibrous mat.2. The method of claim 1 , wherein the combination is free of a cross-linking agent.3. The method of claim 2 , wherein the hydrogel forming polymer resin is poly(vinyl alcohol) (PVOH) and the nanofibers exhibit cross-linking between the PGS and PVOH upon deposition onto the surface.4. The method of claim 3 , wherein the PGS and PVOH are a blend.5. The method of claim 4 , wherein the PGS and PVOH are blended in a common solvent to form a solution for the electrospinning.6. The method of claim 5 , wherein the total solids content of the solution is in the range of about 2% to about 10% by weight.7. The method of claim 6 , wherein the nanofibers are electrospun from the solution being pumped at a rate of about 1 microliter per minute to about 200 microliters per minute.8. The method of comprising electrospinning at a voltage differential in the range of 5 kV to 70 kV.9. The method of claim 1 , wherein the surface onto which the nanofibers are deposited is a textile.10. The method of claim 1 , further comprising forming a pouch from the fibrous mat.11. The method of claim 1 , further comprising electrospinning a second set of nanofibers from a composition different than the combination of PGS and the hydrogel forming polymer and co-depositing the second set of nanofibers with the PGS-hydrogel forming nanofibers ...

ELECTROSPINNING OF PTFE WITH HIGH VISCOSITY MATERIALS

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. 1. A polymeric material comprising: a membrane comprised of serially deposited polymeric fibers , the polymeric fibers having been stretched in a first direction after the fibers are serially deposited.2. The polymeric material of claim 1 , wherein the serially deposited fibers comprise sintered fibers.3. The polymeric material of claim 1 , wherein the serially deposited fibers are exposed to an elevated temperature.4. The polymeric material of claim 1 , wherein the serially deposited fibers are generally aligned in the first direction.5. The polymeric material of claim 1 , wherein the membrane is more resistant to creep in the first direction after the membrane is stretched.6. The polymeric material of claim 1 , wherein the serially deposited polymeric fibers have been stretched in a second direction.7. A serially deposited fiber mat comprising a portion of a device claim 1 , the serially deposited fiber mat comprising serially deposited fibers claim 1 , wherein all of the fibers have diameters of 400 nm to 3200 nm.8. The serially deposited fiber mat of claim 7 , wherein the serially deposited fiber mat comprises spun polytetrafluoroethylene fibers.9. The serially deposited fiber mat of claim 7 , wherein all of the fibers have diameters from 800 nm to 2.4 μm.10. The serially ...

Polypeptide Electrospun Nanofibrils of Defined Composition

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. 1. A method of preparing an electrospun nanofibril , comprising:dissolving at least one polypeptide in a solvent to form a solution; andelectrospinning the solution to form the electrospun nanofibril.2. The method according to claim 1 , wherein the at least one polypeptide comprises poly(L-glutamate claim 1 , tyrosine) or poly(L-ornithine).3. The method according to claim 1 , wherein a diameter of the nanofibril is less than a micron.4. The method according to claim 1 , wherein electrospinning the solution comprises electrospinning the solution in an electric field of from about 10V/m to about 7×10V/m.5. The method according to claim 1 , wherein the solvent is water.6. The method according to claim 1 , wherein the at least one polypeptide is poly(L-ornithine).7. The method according to claim 1 , wherein the at least one polypeptide is present in the solution at a concentration in a range of from 10% to 55% (w/v).8. The method according to claim 1 , wherein the at least one polypeptide is present in the solution at a concentration in a range of from about 50% to about 55% (w/v).9. The method according to claim 7 , wherein the at least one polypeptide is dissolved in the solvent at a temperature in a range of from 20° C. to 30° C.10. The method according to claim 9 , wherein the solvent is water.11. The method according to claim 1 , wherein the at least one polypeptide satisfies the opposite charges criterion.12. The method according to claim 1 , wherein electrospinning the solution comprises continuously electrospinning the solution at a flow rate in a range of from 1 μL/min to 100 μL/min.13. The ...

Methods of Delivering An Oral Care Active by Administering Oral Care Articles Comprising A Filament

A method of delivering a health care active having the steps of administering to a mammal in need of a health benefit or a treatment for a health condition a personal health care article and consuming the article. The article contains one or more filaments that contain a backbone material, a health care active and optionally aesthetic agents, extensional aids, plasticizers, and crosslinking agents. 2. The oral care article of claim 1 , wherein the first and second nonwoven web comprise from about 10% to about 70% claim 1 , by weight of the nonwoven webs claim 1 , of surfactant.3. The oral care article of claim 2 , wherein the surfactant comprises anionic surfactant claim 2 , zwitterionic surfactant claim 2 , or a combination thereof.4. The oral care article of claim 3 , wherein the surfactant comprises alkyl sulfate and betaine compound.5. The oral care article of claim 1 , wherein the backbone material comprises a synthetic polymer claim 1 , a sugar alcohol claim 1 , or a combination thereof.6. The oral care article of claim 5 , wherein the synthetic polymer comprises polyvinyl alcohol.7. The oral care article of claim 6 , wherein the sugar alcohol is xylitol.8. The oral care article of claim 1 , wherein the oral care article comprises an aesthetic agent.9. The oral care article of claim 8 , wherein the aesthetic agent comprises flavors claim 8 , sensates claim 8 , sweeteners claim 8 , salivation agents claim 8 , or combinations thereof.10. The oral care article of claim 1 , wherein the first and second nonwoven webs comprise a meltblown filament.11. The oral care article of claim 10 , wherein the meltblown filament has a basis weight of from about 20 g/mto about 1000 g/m.12. The oral care article of claim 1 , wherein the oral care article comprises a teeth whitening agent claim 1 , a tooth care agent claim 1 , a mouthwash agent claim 1 , a periodontal gum care agent claim 1 , or combinations thereof.14. The oral care article of claim 13 , wherein the first and ...

Porous laminate

Provided is a porous laminate having satisfactory resistance to a mechanical load such as a bending stress while maintaining the characteristics of a porous structure. A porous laminate includes: a layer A formed on a support, the layer A including a porous film containing polymer nanofibers; and a layer B formed on the layer A, the layer B including a porous film containing polymer nanofibers, in which: an existence ratio of the polymer nanofibers contained in the layer A) is larger than an existence ratio of the polymer nanofibers contained in the layer B; and a difference between the existence ratio of the polymer nanofibers contained in the layer A and the existence ratio of the polymer nanofibers contained in the layer B is more than 40%.

Separator for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery utilizing same, and manufacturing methods of same

The separator of a nonaqueous electrolyte secondary battery is characterized by having a composite nanofiber fiber which is a nanosize fiber that contains two or more kinds of aqueous resins whose melting points are different.

Stable Catalyst Ink Formulations, Methods of Using Such Inks in Fiber Formation, and Articles Comprising Such Fibers

The present invention relates to stable catalyst ink formulations comprising am electrospinning polymer selected from halogen-comprising polymers. The present invention further relates to electrospinning of such ink formulation, to the so-obtained electrospun fibrous mat as well as to articles comprising such electrospun fibrous mat. 1. Ink formulation comprising(i) metal supported on a carrier,(ii) an ionomer,(iii) an electrospinning polymer selected from the group of halogen-comprising polymers, and(iv) a solvent.2. Ink formulation according to claim 1 , wherein the metal is selected from the group consisting of Sc claim 1 , Y claim 1 , Ti claim 1 , Zr claim 1 , Hf claim 1 , V claim 1 , Nb claim 1 , Ta claim 1 , Cr claim 1 , Mo claim 1 , W claim 1 , Fe claim 1 , Ru claim 1 , Os claim 1 , Co claim 1 , Rh claim 1 , Ir claim 1 , Ni claim 1 , Pd claim 1 , Pt claim 1 , Cu claim 1 , Ag claim 1 , Au claim 1 , Zn claim 1 , Cd claim 1 , Hg claim 1 , lanthanides claim 1 , actinides and any blend thereof.3. Ink formulation according to claim 1 , wherein the carrier is selected from the group consisting of carbon claim 1 , silica claim 1 , metal oxides claim 1 , metal halides and any blend thereof.4. Ink formulation according to claim 1 , wherein the ionomer comprises electrically neutral repeating units and ionized or ionizable repeating units.5. Ink formulation according to claim 1 , wherein the halogen-comprising polymer comprises fluorine claim 1 , chlorine or both claim 1 , fluorine and chlorine.6. Ink formulation according to claim 5 , wherein the halogen-comprising polymer comprises an alkanediyl monomer unit of general formula (III){'br': None, 'sub': 2', '4-p-q-r', 'p', 'q', 'r, 'sup': 1', '2', '3, '*—[CHYYY]—*\u2003\u2003(III)'}whereinp is selected from the group consisting of 1, 2, 3 and 4;q is selected from the group consisting of 0, 1, 2 and 3;r is selected from the group consisting of 0, 1, 2 and 3;{'sup': '1', 'Yis fluorine;'}{'sup': '2', 'Yis chlorine; and'}{' ...

METHOD OF FORMING A CATALYST LAYER FOR A FUEL CELL

A method of forming a catalyst layer for a fuel cell includes electrospinning a first solution of an ionomer, a binder, and a first solvent to form a porous mat having an interior and an exterior and including a plurality of ionomer nanofibers intertwined with one another to define a plurality of pores within the interior. A portion of the plurality of ionomer nanofibers define the exterior and have an internal surface facing the interior and an external surface facing away from the interior. The method also includes electrospraying a second solution of a catalyst and a second solvent onto the porous mat such that the catalyst is disposed on each external surface and is not embedded within the plurality of pores to thereby form the catalyst layer. A catalyst layer and a fuel cell are also described. 1. A method of forming a catalyst layer for a fuel cell , the method comprising:electrospinning a first solution of an ionomer, a binder, and a first solvent to form a porous mat having an interior and an exterior and including a plurality of ionomer nanofibers intertwined with one another to define a plurality of pores within the interior;wherein a portion of the plurality of ionomer nanofibers define the exterior and have an internal surface facing the interior and an external surface facing away from the interior; andelectrospraying a second solution of a catalyst and a second solvent onto the porous mat such that the catalyst is disposed on each external surface and is not embedded within the plurality of pores to thereby form the catalyst layer.2. The method of claim 1 , wherein electrospraying includes not depositing the ionomer onto the catalyst.3. The method of claim 1 , wherein electrospraying includes minimizing an amount of ionomer in contact with the catalyst.4. The method of claim 1 , wherein electrospinning is concurrent to electrospraying.5. The method of claim 1 , wherein electrospinning occurs before electrospraying.6. The method of claim 5 , wherein the ...

Covered Stent For Local Drug Delivery

The present invention relates generally to an endoprosthesis for maintaining patency of a body vessel, e.g., a stent, in a basically tubular configuration comprised of a structural lattice with a mesh covering which is capable of storing releasing one or more drugs to and penetrating into surrounding tissue. 1. A drug eluting stent system for use in delivering at least one therapeutic agent to a target , preferably the bile or pancreatic duct , comprising:(a) a stent capable of radial expansion; and(b) a coating, wherein the coating is composed of a porous surface covering and at least one therapeutic agent, wherein the at least one therapeutic agent is an antiproliferative agent and wherein the stent is encapsulated by the coating.2. The drug eluting stent system of claim 1 , wherein the at least one therapeutic agent is a macrocyclic triene immunosuppressive compound.5. The drug eluting stent system of claim 1 , wherein the porous surface covering is a nonwoven fabric.6. The drug eluting stent system of claim 5 , wherein the nonwoven fabric is composed of electrospun fibers.7. The drug eluting stent system of claim 6 , wherein the electrospun fibers are composed of a polymer selected from the group comprising or consisting of include polytetrafluoroethylene claim 6 , fluorinated ethylene propylene claim 6 , Dacron claim 6 , polyethylene terephthalate claim 6 , polyurethanes claim 6 , polycarbonate claim 6 , polypropylene claim 6 , Pebax claim 6 , polyethylene and biological polymers such as collagen claim 6 , fibrin claim 6 , and elastin.8. The drug eluting stent system of claim 1 , wherein the porous surface covering has a porosity of within the range of 20% to 40% of the surface area.9. The drug eluting stent system of claim 1 , wherein the porous surface covering has a porosity of within the range of 20% to 40% of the surface area at the abluminal surface and of less than 5% of the surface area at the luminal surface.10. The drug eluting stent system of claim 1 ...

Black Polytetrafluoroethylene Porous Film, Production Process for the Same, and Uses of the Same

Provided is a black PTFE porous film which comprises a black colorant-containing PTFE nanofiber (D) containing a polytetrafluoroethylene (PTFE) nanofiber (E) and a black colorant (B) and has a value (V), as represented by a Munsell symbol in accordance with JIS Z 8721, of not more than N2.5, wherein the black colorant-containing PTFE nanofiber (D) is obtained by subjecting a spinning solution containing at least PTFE or modified PTFE (A) to an electrospinning method.

SILICONE-MODIFIED POLYURETHANE FIBER AND METHOD FOR MANUFACTURING SAME

A fiber formed from a resin including a silicone-modified polyurethane resin comprising the reaction products of a polyol (A), a chain extender (B), an active-hydrogen-group-containing organopolysiloxane (C), and a polyisocyanate (D), wherein the active-hydrogen-group-containing organopolysiloxane (C) contains an active-hydrogen-group-containing organopolysiloxane (C-1) having a carbinol group at only one terminal. 1. A fiber formed from a resin comprising a silicone-modified polyurethane resin comprising the reaction product of a polyol (A) , a chain extender (B) , an active hydrogen-containing organopolysiloxane (C) , and a polyisocyanate (D) , the active hydrogen-containing organopolysiloxane (C) containing an active hydrogen-containing organopolysiloxane (C-1) having a carbinol group only at one end.3. The fiber of wherein the carbinol group is selected from hydroxymethyl claim 2 , 2-hydroxyethan-1-yl claim 2 , 2-hydroxypropan-1-yl claim 2 , 3-hydroxypropan-1-yl claim 2 , 2-hydroxybutan-1-yl claim 2 , 4-hydroxybutan-1-yl claim 2 , 5-hydroxypentan-1-yl claim 2 , 6-hydroxyhexan-1-yl claim 2 , 7-hydroxyheptan-1-yl claim 2 , 8-hydroxyoctan-1-yl claim 2 , 9-hydroxynonan-1-yl claim 2 , and 10-hydroxydecan-1-yl.5. The fiber of wherein a ratio of the organopolysiloxane (C-1) having formula (1) to the organopolysiloxane (C-2) having formula (3) claim 4 , that is claim 4 , (C-1):(C-2) is from 100:0 to 1:99 as a weight ratio.6. The fiber of wherein component (C) is present in an amount of 0.1 to 50 parts by weight per 100 parts by weight of components (A) to (D) combined.7. The fiber of wherein the silicone-modified polyurethane resin has a number average molecular weight of 10 claim 1 ,000 to 200 claim 1 ,000.8. The fiber of which has a fiber diameter of 100 nm to less than 1 claim 1 ,000 nm.9. A fiber layup structure comprising the fiber of .10. A method for preparing the fiber of claim 1 , comprising the step of spinning a fiber from a solution or dispersion of the ...

Device and method to produce nanofibers and constructs thereof

The present invention relates to a device and a method for producing polymer fibers, in particular to nozzle-less electrospinning devices and methods to produce fibers and constructs thereof, wherein the nanofibers are generated by using pulsed and/or bursted ultrasound. 1. A device for producing polymer fiber , the device comprising ,an open chamber for a polymer medium,a voltage generating means including an electrode positioned in the open chamber, the voltage generating means configured to apply a voltage to the polymer medium,an ultrasound beam generating means including a signal generating means and an ultrasound transducer, wherein the signal generating means is configured to generate an ultrasound beam driving signal and wherein the ultrasound beam driving signal includes at least one of a pulse and a burst, andan electrically isolating and acoustically conducting membrane arranged between the open chamber and the ultrasound transducer.2. The device according to claim 1 , wherein the signal generating means further comprises a means configured to modify one or more of: a transducer voltage claim 1 , a transducer pulse/burst duration claim 1 , a transducer pulse repetition frequency claim 1 , a transducer frequency content claim 1 , a transducer signal acoustic linearity/non-linearity and transducer signal characteristics.3. The device according to claim 1 , wherein the device further comprises a sealed chamber between the membrane and the ultrasound transducer claim 1 , the sealed chamber including an electrically isolating and acoustically conducting material.4. The device according to claim 3 , wherein the device further comprises a means configured to circulate and/or to change the electrically isolating and acoustically conducting material in the sealed chamber.5. The device according to claim 3 , wherein the electrically isolating and acoustically conducting material is selected from oil claim 3 , and solid epoxy polymer.6. The device according to claim ...

POLYMERIC-METAL COMPOSITE ELECTRODE-BASED ELECTROCHEMICAL DEVICE FOR GENERATING OXIDANTS

A water treatment system comprises at least one electrolytic cell comprising at least one electrode and a power source for powering the electrode. The electrode may be a metal electrode comprising a coating of polymer comprising structural units of formula I (I) wherein Ris independently at each occurrence a C-Calkyl radical or —SOM wherein M is independently at each occurrence a hydrogen or an alkali metal a hydrogen or an alkali metal, Ris independently at each occurrence a C-Calkyl radical, a is independently at each occurrence an integer ranging from 0 to 4, and b is independently at each occurrence an integer ranging from 0 to 3. An associated method is also described. 2. The water treatment system of claim 1 , wherein b=0.3. The water treatment system of claim 2 , wherein a=0.4. The water treatment system of claim 2 , wherein a=1 and Ris —SOM wherein M is a hydrogen or an alkali metal.5. The water treatment system of claim 1 , wherein the metal electrode comprises a metal selected from the group consisting of titanium claim 1 , nickel claim 1 , aluminum claim 1 , molybdenum claim 1 , niobium claim 1 , tin claim 1 , tungsten claim 1 , zinc claim 1 , and combinations thereof.6. The water treatment system of claim 5 , wherein the metal electrode comprises titanium.7. The water treatment system of claim 1 , wherein the metal electrode is a metal plate or a metal foam electrode.8. The water treatment system of claim 7 , wherein the polymer coating comprises fibers formed using an electrospinning process.9. The water treatment system of claim 8 , wherein the metal electrode is a metal foam electrode.10. The water treatment system of claim 1 , wherein the electrolytic cell comprises at least two electrodes and a liquid chamber between the at least two electrodes and wherein at least one electrode is a bipolar electrode.11. The water treatment system of claim 10 , comprising an input line and/or an output line in communication with the liquid chamber.13. The method of ...

Super Absorbent Polymer Non-Woven Fabric and Preparation Method of the Same

The present disclosure relates to a preparation method of a super absorbent polymer non-woven fabric and super absorbent polymer fibers prepared therefrom. According to the preparation method of the present disclosure, it is possible to provide super absorbent polymer fibers exhibiting high flexibility and fast absorption rate in the form of long fibers. 1. A super absorbent polymer non-woven fabric comprising super absorbent polymer fibers having a diameter of more than 10 μm and a length of 0.1 m or more ,{'sup': '−1', 'wherein a critical curvature is 0.5 mmor more.'}2. The super absorbent polymer non-woven fabric of claim 1 ,wherein the super absorbent polymer fibers have centrifuge retention capacity (CRC) of 5 to 50 g/g as measured in accordance with EDANA method WSP 241.2.3. The super absorbent polymer non-woven fabric of claim 1 ,wherein the super absorbent polymer fibers have absorbency under load (AUL) at 0.9 psi of 4 to 45 g/g, as measured in accordance with EDANA WSP 242.2.4. The super absorbent polymer non-woven fabric of claim 1 ,{'sup': −7', '−7', '3, 'wherein the super absorbent polymer fibers have saline flow conductivity (SFC) of 5*10to 120*10cm·sec/g.'}5. The super absorbent polymer non-woven fabric of claim 1 ,wherein the super absorbent polymer fibers are present in an amount of 50 parts by weight or more based on 100 parts by weight of the super absorbent polymer non-woven fabric.6. A preparation method of a super absorbent polymer non-woven fabric claim 1 , comprising:preparing a first aqueous polymer solution containing a hydrogel polymer by polymerizing an aqueous monomer solution containing an acrylic acid-based monomer having at least partially neutralized acidic groups, a comonomer having a glass transition temperature (Tg) of room temperature (25° C.) or lower, and a polymerization initiator,mixing the first aqueous polymer solution with a cross-linking agent having a glass transition temperature (Tg) of room temperature (25° C.) or lower ...

FINE FIBER PRODUCING METHOD AND FINE FIBER PRODUCING APPARATUS

A fine fiber production method and a fine fiber production apparatus are provided. The fine fiber production method includes: discharging a flowable polymer compound from a discharge port provided at an extruder; forming fibers having a fiber diameter of from 50 nm to 15 μm by spraying, in a direction intersecting with a discharge direction of the flowable polymer compound, a pressurized gas from an air nozzle to the discharged flowable polymer compound, the air nozzle including a temperature control member and a spindle-shaped nozzle or a De Laval nozzle; and collecting the fibers using a collection member provided downstream in a gas spraying direction. 1. A method of producing fine fibers , the method comprising:discharging a flowable polymer compound from a discharge port provided at an extruder;forming fibers having a fiber diameter of from 50 nm to 15 μm by spraying, in a direction intersecting with a discharge direction of the flowable polymer compound, a pressurized gas from an air nozzle to the discharged flowable polymer compound, the air nozzle comprising a temperature control member and a spindle-shaped nozzle or a De Laval nozzle; andcollecting the fibers using a collection member provided downstream in a gas spraying direction.2. The method of producing fine fibers according to claim 1 , further comprising a heating step of increasing an ambient temperature in a vicinity of the flowable polymer compound discharged from the discharge port.3. The method of producing fine fibers according to claim 1 , wherein the collecting of the fibers includes collecting the fibers on a nonwoven fabric to form a sheet.4. The method of producing fine fibers according to claim 1 , wherein a speed of the gas discharged from the air nozzle is 30 m/sec or more.5. The method of producing fine fibers according to claim 1 , wherein the flowable polymer compound is a heat-melted thermoplastic resin claim 1 , and a temperature of the gas discharged from the air nozzle is from ...

Dental membrane

Provided is a dental membrane which includes: a first support made by accumulating first nanofibers of a biodegradable polymer obtained by electrospinning and having a plurality of pores formed therein; a second support made by accumulating second nanofibers of a biodegradable polymer obtained by electrospinning on the first support, and having a plurality of pores formed therein, in which the second nanofibers have diameters larger than the diameters of the first nanofibers; and a third support made by accumulating third nanofibers of a biodegradable polymer obtained by electrospinning on the second support, and having a plurality of pores formed therein, in which the third nanofibers have diameters smaller than the diameters of the second nanofibers.

COMPOSITE PROSTHETIC DEVICES

The present disclosure provides composite prosthetic devices comprising two or more layers of electrospun polymers and methods of preparation thereof. In some embodiments, the two or more layers can be porous and in other embodiments, one or more components is nonporous. The composite prosthetic devices can comprise various materials and the properties of the prosthetic devices can be tailored for use in a range of different applications. 120-. (canceled)21. A method for producing a composite prosthetic device comprising:combining at least one porous layer comprising electrospun poly(tetrafluoroethylene) and at least one porous layer comprising a second electrospun polymer to give a composite prosthetic device precursor; andapplying pressure, heat, or both pressure and heat to the composite prosthetic device precursor to provide a composite prosthetic device.22. The method of claim 21 , further comprising placing a structural frame around the porous layer comprising electrospun poly(tetrafluoroethylene).23. The method of claim 22 , wherein the structural frame is a stent.24. The method of claim 22 , wherein the structural frame comprises open spaces through which the second electrospun polymer penetrates.25. The method of claim 21 , wherein the combining comprises wrapping the porous layer comprising a second electrospun polymer around the porous layer comprising electrospun poly(tetrafluoroethylene).26. The method of claim 21 , wherein the combining comprises electrospinning the porous layer comprising a second electrospun polymer onto the porous layer comprising electrospun poly(tetrafluoroethylene).27. The method of claim 21 , wherein the second electro spun polymer comprises a solution-electrospun polymer.28. The method of claim 21 , wherein the second electrospun polymer comprises a thermoplastic polymer or a thermoset polymer.29. The method of claim 21 , wherein the second electrospun polymer layer comprises a polyurethane or a silicone.30. The method of claim ...

ELECTROSPINNING APPARATUS WITH A SIDEWAY MOTION DEVICE AND A METHOD OF USING THE SAME

The invention provides an electrospinning apparatus, which comprises one or more spinneret, a rotating collector disposed from the spinneret and configured to collect the fibers, and a sideway motion device disposed on or connected to the spinneret or the rotating collector and configured to propel or move the spinneret or the rotating collector, wherein the sideway motion device is controlled by a controlling unit for providing an angular speed (θ) of the sideway motion with a formula: θ=tanx/H wherein x is a parallel motion speed of the device and H is a vertical height between the spinneret and the rotating collector and wherein the angular speed (θ) is in a range of about 1.0×10to about 1.0 (°/sec). Also provided is the 2-D or 3-D membranes produced therefrom and a method of using the apparatus of the invention. 1. An electrospinning apparatus , which comprises one or more spinneret , a rotating collector disposed from the spinneret and configured to collect the fibers , and a sideway motion device disposed on or connected to the spinneret or the rotating collector and configured to propel or move the spinneret or the rotating collector , wherein the sideway motion device is controlled by a controlling unit for providing an angular speed (θ) of the sideway motion with a formula: θ=tanx/H wherein x is a parallel motion speed of the device and H is a vertical height between the spinneret and the rotating collector and wherein the angular speed (θ) is in a range of about 1.0×10to about 1.0 (°/sec).2. The electrospinning apparatus of claim 1 , wherein the spinneret is a coaxial spinneret.3. The electrospinning apparatus of claim 1 , wherein the sideway motion device is disposed on the spinneret.4. The electrospinning apparatus of claim 1 , wherein the sideway motion device is connected to the spinneret.5. The electrospinning apparatus of claim 1 , wherein the controlling unit is set in a computer.6. The electrospinning apparatus of claim 1 , wherein the angular ...

FIBERS FOR NON-WOVEN FABRICS HAVING BLENDS OF POLYMERS WITH HIGH AND LOW MELT FLOW RATES

A spunbond non-woven fabric includes a plurality of fibers. The fibers are formed from a polymer blend that includes at least one first polymer and at least one second polymer. A melt flow rate of the at least one first polymer is greater than a melt flow rate of the at least one second polymer, and the melt flow rate of the at least one second polymer is about 9 g/10 min to less than 18 g/10 min. The blend may include a percentage by weight of the second polymer that is greater than a percentage by weight of the first polymer. 1. A spunbond non-woven fabric comprising a plurality of fibers , wherein the fibers are formed from a polymer blend comprising at least one first polymer and at least one second polymer ,wherein a melt flow rate (MFR) of the at least one first polymer is greater than a MFR of the at least one second polymer,wherein the MFR of the at least one second polymer less than 18 g/10 min, andwherein the polymer blend comprises a percentage by weight of the second polymer that is greater than a percentage by weight of the first polymer.2. The spunbond non-woven fabric of claim 1 , wherein a weight of the fabric is from about 42.5 gsm to less than about 105 gsm claim 1 , and wherein the fabric has a mechanical property that is greater than the mechanical property of a spunbond fabric comprising fibers formed from only the first polymer and under the same conditions claim 1 , and wherein the mechanical property comprises at least one of a trap tear strength claim 1 , a strip tensile strength claim 1 , a puncture resistance claim 1 , or a grab tensile strength.3. The spunbond non-woven fabric of claim 2 , wherein the mechanical property is at least 20% greater than the mechanical property of the spunbond fabric comprising fibers formed from only the first polymer under the same conditions.4. The spunbond non-woven fabric of claim 1 , wherein a weight of the fabric is less than about 105 gsm claim 1 , and wherein the fabric has a mechanical property in a ...

Fiber having a Nanohair Surface Topography

A fiber that has a unique surface topography in that it contains a plurality of nanohairs extending outwardly from an external surface of an elongate structure of the fiber is provided. To form the nanohairs, a polymer composition is spun that includes organofunctional nanoparticles (e.g., polyhedral organofunctional silsesquioxanes) embedded within a matrix of a base polymer. Despite being initially embedded within the polymer, the present inventors have discovered that, through selective control over the nature and relative concentration of the components of the composition, as well as the method in which the fiber is formed, a substantial portion of the nanoparticles can migrate to the surface of the fiber as it is formed and thus become arranged in the form of nanohairs.

Cleaning member, and method for manufacturing the same

A cleaning member includes a nonwoven structure whose shape is retained by entanglement between single fibers having a median fiber diameter of from 100 to 2000 nm. The nonwoven structure has an apparent density of from 0.05 to 0.60 g/cm 3 . Preferably, the cleaning member may further include a support, and the support and the nonwoven structure may be arranged in contact with one another. Preferably, the single fiber may be an electrospun fiber. A method for manufacturing a cleaning member includes: a step of performing spinning by electrospinning, and thereby forming a deposit of a single fiber; and a step of pressing the deposit, and thereby forming a nonwoven structure having an apparent density of from 0.05 to 0.60 g/cm 3 .

Multi-Layered Interlaced Membrane and Methods for Fabrication Thereof

The present invention provides a multi-layered interlaced membrane comprising at least one substrate layer including a plurality of first polymer-based microfibers; at least one nanofibrous layer including a plurality of second polymer-based nanofibers where each of the nanofibers has one or more nano-branches; at least one interlaced layer including a plurality of third polymer-based submicron fibers where each of the submicron fibers has one or more nano-branches and a plurality of fourth polymer-based nanofibers where each of the nanofibers has one or more nano-branches, wherein the third polymer-based submicron fibers are interlaced with the fourth polymer-based nanofibers; at least one submicron fibrous layer including a plurality of fifth polymer-based submicron fibers where each of the submicron fibers has one or more nano-branches. The nanofibrous layer is positioned onto the substrate layer; the interlaced layer is positioned onto the nanofibrous layer; the submicron fibrous layer is positioned onto the interlaced layer.

Three dimensional printing modality combining fused deposition modeling and electrospinning

Disclosed herein is an apparatus for fabricating a branching structure, the apparatus comprising: a flexible, electrically conductive internal electrical field collector comprising a first collector end, a second collector end, a collector outer surface located between both collector ends, a collector longitudinal axis extending through the first collector end and the second collector end, and at least one articulating feature positioned between the first collector end and the second collector end, a compression and rotation mechanism in contact with the first collector end, and a continuously formed mandrel that can include branches, having a first mandrel circumference with a mandrel inner circumference larger than the collector outer circumference and positionable over the internal electrical field collector and a second mandrel located at sufficient distance outside the first mandrel to facilitate attraction of electruspun fibers. Also disclosed are methods of manufacturing the branching structure, and grafts thereof.

RECYCLING OF A SHOE

The present invention provides a method for recycling a shoe (), the shoe () comprising various components made from the same material class with varying densities, the method comprises milling () the shoe () to obtain a plurality of particles (), the particles () having different material densities, mixing () the particles, applying heat () to the mixed particles () to obtain a melt of molten particles and extruding () the melt. 1. A method for recycling a shoe , the shoe comprising various components made from the same material class with varying densities , the method comprising:a. milling the shoe to obtain a plurality of particles, the particles having different material densities;b. mixing the particles;c. applying heat to the mixed particles to obtain a melt of molten particles; andd. extruding the melt.2. The method according to claim 1 , further comprising the step of applying heat and pressure to the shoe.3. The method according to claim 1 , further comprising the step of adding new material to the mixed particles and/or the melt.4. The method according to claim 3 , wherein the new material is unrecycled material of the same material class as the shoe.5. The method according to claim 3 , wherein the new material is from a different material class.6. The method according to claim 5 , wherein the new material is an additive comprising a bi-functional isocyanate claim 5 , a trifunctional isocyanate claim 5 , a bifunctional epoxide or a multifunctional epoxide.7. The method according to claim 1 , wherein the same material class comprises a thermoplastic polymer.8. The method according to claim 1 , wherein a majority of weight of the shoe is made from the same material class.9. The method according to claim 1 , wherein at least 70% of the weight of the shoe is made from the same material class.10. The method according to claim 1 , wherein at least 80% of the weight of the shoe is made from the same material class.11. The method according to claim 1 , wherein at ...

NANOFIBER STRUCTURE

A transparent soluble polyimide resin was dissolved in N,N-dimethyacetamide, and a sample solution whose concentration was 10 weight percent was produced. This sample solution is put in a container CNT which is attached to an apparatus shown in , whereby a nanofiber structure was produced. The produced polyimide nanofiber structure acquired the excellent water resistance, air permeability and moisture permeability while maintaining the physical properties inherent in a polyimide, such as high heat resistance and insulation. Further, when a nanofiber structure is produced in a similar manner from a different polyimide resin, the nanofiber structure maintains excellent adhesiveness. 1. A nanofiber structure comprising:a polyimide resin having a structure in which(1) a void ratio thereof is 75% or more, and(2) an average pore diameter distribution thereof is 0.5-2.0 μm.2. The nanofiber structure according to claim 1 , wherein a formation of nanofibers is carried out by an electrospray deposition method.3. The nanofiber structure according to claim 1 , wherein a nanofiber structure is not changed even if heated at 400° C. for 16 hours.4. The nanofiber structure according to claim 1 , wherein an air permeability thereof is 4.55 cc/cm2/s or more in a JIS-L1096 air permeability A method (Frazier method) claim 1 , or 1.68 s/300 cc or less by a JIS-P8117 Gurley testing machine.5. The nanofiber structure according to claim 1 , wherein a moisture permeation resistance (RET) thereof in a ISO11092 method is 3.0 (m2 and Pa/W) or less.6. The nanofiber structure according to claim 1 , wherein a water resistance thereof is 0.01 or more MPa by JIS-L1092 water-penetration-test B method (high-pressure water method).7. The nanofiber structure according to claim 1 , wherein a thermal conductivity thereof is within a range of 0.04-0.05 W/mK.8. The nanofiber structure according to claim 1 , wherein the nanofiber structure has an adhesiveness. The present invention relates to a nanofiber ...