ДИСК ЦЕНТРИФУГИ И СПОСОБ

... 1. Диск центрифуги для волокнообразования из расплавленного термопластичного, способного к волокнообразованию материала при центробежном процессе волокнообразования, содержащий основание, имеющее средства для крепления диска центрифуги на приводном валу для вращения диска центрифуги вокруг оси, перпендикулярной основанию, внешнюю кольцевую периферийную краевую часть, кольцевую периферийную боковую стенку, имеющую нижнюю кольцевую краевую часть и верхнюю кольцевую краевую часть, причем кольцевая периферийная боковая стенка проходит наверх из внешней кольцевой периферийной краевой части основания, а внешняя кольцевая периферийная краевая часть основания составляет одно целое с нижней кольцевой краевой частью кольцевой периферийной боковой стенки, верхний кольцевой армирующий фланец, проходящий по радиусу внутрь от верхней кольцевой краевой части кольцевой периферийной боковой стенки, причем верхний кольцевой армирующий фланец составляет одно целое с верней кольцевой краевой частью кольцевой ...

Способ изготовления сетеподобных материалов из расплавов пластических материалов и устройство для осуществления способа

VERFAHREN ZUR HERSTELLUNG EINES MINERALFASERPRODUKTS

Verfahren und Vorrichtung zum Schmelzspinnen mit Rückkopplungsregelung der Temperatur

SPINNZENTRIFUGE.

Vorrichtung zum Spinnen von Kunstfaeden

Verfahren zur Herstellung von Feinstfaservliesen aus thermoplastischen Polymeren.

Spinnduese zur Herstellung gezwirnter Kunstfaeden

ALKALISCHER ZELLSTOFF MIT EINEM NIEDRIGEN DURCHSCHNITTSPOLYMERISATIONSGRAD UND VERFAHREN ZU SEINER HERSTELLUNG

Improvements in Apparatus Employed in the Manufacture of Artificial Silk.

... 136,784. Clayton, J. Aug. 5, 1919. Addition to 136,769. Spinning and twisting machines with twisting- arrangements at delivery; spindle-driving apparatus; guards and protectors for machinery, arrangement and disposition of.-The electromotors which drive the squirting-spindles of machines for spinning or twisting artificial silk filaments as described in the parent Specification are cooled by a current of air which passes between the stator and the rotor in the direction indicated by the arrows and escapes through a hole g<2>. The spindle is supported by two standards J, J<2>, through which the viscose and the cooling-air for the motorrespectively pass, the former being supplied from. a pipe H through a pump K and filter L, and the latter from a pipe I through a trunnion piece k<4> and a pipe m. A guard-plate is provided to protect the electric conductors and the parts beneath the spindles from viscose and acid.

Improvements in or relating to a method for simultaneously processing a plurality of yarns

... A number of yarns are processed by bringin them together to form a single bundle, after treating one or more of the ends so as to facilitate their ultimate separation, advancing the bundle along a helical path whilst subjecting it to the desired processing, separating the bundle into its constituent yarns and collecting the separated yarns. The treatment of the yarn ends to facilitate their ultimate separation may consist of imparting a small twist to each yarn before its association into the bundle, or subjecting one or more of the yarns to chemical treatment to alter their cross-section. The process is applicable to all continuous filament yarns including those of natural silk, regenerated cellulose, polyesters, polyamides, polyacrylics and copolymers. It may be applied continuously with the production of artificial silk yarns or as an after-treatment, particularly in melt and dryspinning where ...

PROCEDURE FOR THE REPRODUCIBLE PRODUCTION OF FORM PARTICLES OF DIFFERENT GEOMETRY FROM POLYMER DISPERSIONS, MELTS OR LOESUNGEN.

DEVICE TO CENTRIFUGAL SPIDERS.

Device to spiders of art threads.

PROCEDURE FOR THE PRODUCTION OF PURIFYING POLYMER FIBERS.

CENTRIFUGAL SPIN PROCEDURE FOR SPINNLÖSUNGEN

REFRACTORY FIBRES

Apparatus and method for forming fibers from thermoplastic fiberizable materials

Bicomponent glass and polymer fibers made by rotary process

CHEMICAL PROCESS IN A MEDIUM CONNECTED TO A ROTATING BODY

PITCH CARBON FIBERS AND BATTS

TITLE PITCH CARBON FIBERS AND BATTS Mesophase pitch centrifugally spun as described over a lip yields upon stabilization and carbonization with or without graphitization carbon fibers with a lamellar microstructure.

PRODUCTION OF FIBRES WITH REDUCED SHOT FORMATION

ALKALINE PULP HAVING LOW AVERAGE DEGREE OF POLYMERIZATION VALUES AND METHOD OF PRODUCING THE SAME

The present invention provides compositions, useful for making lyocell fibers, having a high hemicellulose content, a low copper number and including cellulose that has a low average degree of polymerization (D.P.) and a narrow molecular weight distribution. Further, the present invention provides processes for making compositions, useful for making lyocell fibers, having a high hemicellulose content, a low copper number and including cellulose that has a low average degree of polymerization and a narrow molecular weight distribution. The present invention also provides lyocell fibers containing a high proportion of hemicellulose.

METHOD OF MAKING SPINNER DISCS FOR ROTARY FIBERIZATION PROCESSES

A method of making a spinner disc for a rotary fiberization process includes: forming a spinner disc from an alloy that forms a protective oxide film on surfaces of the spinner disc exposed to the atmosphere; forming fiberizing holes in an annular peripheral sidewall of the spinner disc; and applying a plasma to a surface of the spinner disc to remove hydrocarbons and sulfurous compounds from the surface of the spinner disc which would otherwise reduce and/or react with and degrade the protective oxide film forming on the surface of the spinner disc when the spinner disc is exposed to the atmosphere.

HEAT SINK COMPOSITION FOR ELECTRICALLY RESISTIVE AND THERMALLY CONDUCTIVE CIRCUIT BREAKER AND LOAD CENTER AND METHOD OF PREPARATION THEREFOR

The disclosed concept relates to compositions and methods for the manufacture of electrically resistive, thermally conductive electrical switching apparatus. The composition includes a polymer component and a nanofiber component. The thermal conductivity of the nanofiber component is higher than the thermal conductivity of the polymer component such that the electrical switching apparatus which includes the composition of the disclosed concept has improved heat dissipation as compared to an electrical switching apparatus constructed of the polymer component in the absence of the nanofiber component. Further, the disclosed concept relates to methods of lowering the internal temperature of an electrically resistive, thermally conductive electrical switching apparatus by forming the internals of the apparatus, e.g., circuit breakers, and/or the enclosure from the composition of the disclosed concept.

SUPERFINE FIBER CREATING SPINNERET AND USES THEREOF

Apparatuses and methods for the production of superfine fibers.

Method for Manufacturing a Mineral Fiber Product

METHOD FOR MANUFACTURING A MINERAL FIBER PRODUCT

A method for manufacturing a mineral fiber product (36) comprises centrifuging mineral fibers with a spinner (10), forming a veil (22) of the mineral fibers moving in the direction of the axis of the spinner (10), directing toward the veil (22), from a position within the veil (22), polymeric material to cause intermingling of the polymeric material and the mineral fibers, and, collecting the intermingled polymeric material and mineral fibers to form a mineral fiber product (36).

Vorrichtung zum Drehspinnen von Kunstfäden.

Einrichtung zum Spinnen und Zwirnen von Kunstfäden.

Verfahren und Vorrichtung zum Spinnen von Kunstseide.

Verfahren zur Herstellung eines Küpenfarbstoffes.

Appareil pour filer et retorde des fils

Procédé de fabrication d'un article en matière plastique et appareil pour la mise en oeuvre de ce procédé

Vorrichtung zum Spinnen von Kunstseide.

Procédé pour la fabrication de fibres, notamment de fibres de verre, et dispositif pour la mise en oeuvre de ce procédé

Verfahren zum Spinnen und Zwirnen von Kunstfäden.

Procédé de fabrication d'un fil de matière synthétique et dispositif pour la mise en oeuvre de ce procédé

Procédé et appareil pour produire des fibres fines en polymère

Dispositif pour produire des fils en matière synthétique

METHOD FOR CONVERTING A MINERAL MATERIAL WITH HIGH MELTING TEMPERATURE FIBER OR ROLLING MILLS AND CENTRIFUGAL.

ФОРМИРОВАНИЕ ВОЛОКНА ЭЛЕКТРОМЕХАНИЧЕСКИМ ПРЯДЕНИЕМ

Представлен способ формирования волокна электромеханическим прядением. Исходный жидкий материал подают во вращающийся кольцеобразный элемент, такой как прядильная чаша. Жидкий материал направляется центробежной силой к внешнему краю кольцеобразного элемента, где он сбрасывается в форме волокна. Электрический заряд сообщается жидкости во время нахождения в кольцеобразном элементе или непосредственно при сбрасывании с кольцеобразного элемента.

Rotating die for artificial silk

PROCESS AND APPARATUS TO SPIN FIBRES

PINS HIGH SPEEDS FOR MACHINE OF MINERAL WOOL FIBRE DRAWING

PROCESS OF PRODUCTION Of a FIBRE PRECURSOR Of ALUMINA AND EQUIPMENT FOR THIS ONE

Process and device for the simultaneous spinning mill and the twisting of artificial wire using a rotary tube

PINS HIGH SPEEDS FOR MACHINE OF MINERAL WOOL FIBRE DRAWING

Broche grandes vitesses pour machine de fibrage de laine minérale. La broche pour machine de fibrage de laine minérale par centrifugation libre, comprend un arbre (2) monté sur des roulements (3) à l'intérieur d'un palier (4) en forme de fourreau. Les roulements sont des roulements de précision graissés à vie et le palier en forme de fourreau est une pièce usinée monobloc ce qui permet à la broche de tourner à des vitesses de l'ordre de 12000 tlmn.

Spinning tube for manufacturing nanofiber and method of manufacturing nanofiber by thereby

원심력을 이용한 다성분 나노섬유 방사기구 및 이를 이용한 다성분 나노섬유의 제조방법

... 본 발명에 따른 원심력을 이용한 다성분 나노섬유 방사기구는 서로 상이한 방사용액을 각각 저장하는 2개 이상의 용액 저장판(P1,P2)들과 동심환 노즐(h)들이 배열되어 있는 하나의 노즐 배열판(P3)이 차례로 적층된 구조인 방사기구 본체(6)를 포함하며, 상기 용액 저장판(P1,P2) 및 노즐 배열판(P3)들은 (ⅰ) 측벽(Z) 상부를 연결하는 가상 수평선 보다 하부 방향으로 경사지게 형성되어 있고, 원판 형태를 구비하는 상부면(X); (ⅱ) 상부 방향으로 경사지게 오목한 곡면을 이루어 접시(dish) 형태를 구비하는 하부면(Y); 및 (ⅲ) 상기 상부면(X)과 하부면(Y)을 연결하는 원통상 측벽(Z);들로 구성되어 전체적으로는 원통 형상을 구비한다.본 발명은 정전기력 없이 원심력과 공기흐름만을 이용하여 다성분 나노섬유를 방사하기 때문에 컬렉터 등에 고전압 인가로 인한 작업 위험성도 피할 수 있고, 다성분 나노섬유를 높은 생산성(토출량)으로 제조할 수 있고, 용매 휘발 및 회수가 용이하고, 방사액이 섬유상이 아닌 용액상태로 컬렉터 상에 떨어지는 현상(드롭 현상)도 효과적으로 방지하여 다성분 나노섬유 웹의 품질을 향상시키는 효과가 있다.

나노섬유 방사장치

... 본 발명은 용융수지를 원료로 하여 나노섬유를 방사하는 장치에 있어서: 공급관체(12) 상으로 원료를 이송하는 본체(10); 상기 공급관체(12)의 외면으로 장착된 중공축(22)에 회전력을 작용하는 구동부(20); 및 상기 공급관체(12)와 연통되는 노즐(33)을 중공축(22) 상에 연결하여 원심력으로 원료를 분출하는 방사부(30);를 포함하여 이루어지는 것을 특징으로 한다. 이에 따라, 용융 수지의 원료를 연속적으로 공급하면서 설정된 원심력의 작용으로 유동과 비산을 유도하는 단순한 공정을 기반으로 하여 나노섬유 제조의 양산성을 제고하는 효과가 있다.

Electrospining tube system for manfacturing nanofiber

... 본 발명의 나노섬유 제조용 전기방사튜브 시스템은 (ⅰ) 내부공간이 구획판(T1)들에 의해 구획되어 있으며, 원추형 형태 및 원통형 형태 중에서 선택된 1종의 형태를 구비하는 전기방사튜브(T); 및 (ⅱ) 상기 전기방사튜브(T) 하단에 연결되어 있으며 내부표면에 홈 및 돌기 중에서 선택된 1종의 형상물(R)이 형성되어 있고, 원추형 형태 및 원통형 형태 중에서 선택된 1종의 형태를 구비하는 저수조(R);로 구성된다.본 발명의 나노섬유 제조용 전기방사 시스템은 상기 전기방사튜브(T)와 저수조(R) 사이에 단면 형태가 원형 형태 및 다각형 형태 중에서 선택된 1종의 형태인 셀(D1)들로 구성되고 원추형 형태 및 원통형 형태 중에서 선택된 1종의 형태를 구비하는 분배판(D)이 추가로 더 설치되어 있는 것을 포함한다.본 발명은 정전기력과 원심력을 함께 사용하여 나노섬유를 전기방사하기 때문에 단위시간당 단위 전기방사튜브의 토출량이 높아져 생산성이 크게 향상되며, 방사용액이 나노섬유화 되지 않고 용액상태로 떨어지는 드롭-렛(Drop-let) 현상을 효과적으로 방지하여 나노섬유 형성능이 우수한 나노섬유 매트의 제조가 가능해지고, 노즐사용시와 비교시 노즐 교체 및 청소의 번거로움이 해소되고, 방사튜브의 낮은 회전수로도 나노섬유를 안정적으로 방사 할 수 있는 효과가 있다.

ELECTROSTATIC SPINNING ASSEMBLY

método e dispositivo para obtenção de fibras a partir polímeros termoplásticos recicláveis

MELT-SPUN POLYPROPYLENE FINE-GRADE NANOFIBROUS WEB

The present invention is directed toward a to fine-grade stand-alone nanoweb and nanofibrous membrane comprising a nanofiber network with a number average nanofiber diameter less than 200 nm and the mean flow pore size less than 1000 nm that yield the selective barrier medium with a superior balance of flow versus barrier properties.

CENTRIFUGAL SPINNING PROCESS

There is described a fibre or filament which comprises a substantially amorphous outer surface and a more oriented core. There is also described a centrifugal spinning apparatus comprising an annular spinning member provided with an inlet end and an outlet end, the annular spinning member being rotatably mounted on an axis, and being provided with a coaxially mounted spinning plate, drive means for rotating the annular member and the plate, the apparatus also being provided with material feed means having an exit in the annular member adjacent the plate, the member having a plurality of spinning points formed on the external periphery of the outlet end thereof and grooves which extend across the outlet end of the spinning member from the interior surface to the external periphery thereof to direct material in liquid form to the spinning points and wherein axial directed cooling means is provided at the inlet end of the annular spinning member characterised in that, external to the outlet ...

FIBER MANUFACTURING SPINNER AND FIBERIZER

A fiber manufacturing apparatus (10) including a spinner (12), mounted on one end of a rotatable shaft (14), and a source supplying two streams of at least one molten thermoplastic material (78, 80) to the spinner. The spinner includes a radial extension (100), a radial wall (16), and an outer peripheral wall (18). The radial extension is mounted to and extends radially out from the shaft. The radial wall is mounted to and extends radially out from the radial extension. The radial wall includes an upper surface (35), a lower surface (37), and an outer periphery. The periphery wall is disposed around the outer periphery of the radial wall and has a plurality of orifices (20) for centrifuging fibers from at least one molten thermoplastic material. During the operation of the spinner, the radial extension directs one stream (78) of molten thermoplastic material through at least one flow hole (36) to the lower surface of the radial wall and to orifices of the peripheral wall. As the spinner ...

ROTARY SPINNER APPARATUSES, METHODS AND SYSTEMS FOR PRODUCING FIBER FROM MOLTEN MATERIAL

An apparatus for producing fibers from molten material includes a drive shaft rotatable about an axis, a slinger basket including a base, a side wall, and an interior void. The side wall extends axially upward from the base and includes a plurality of distribution holes. The interior void extends radially from the drive shaft to the side wall and extends axially from the base to an upper opening which extends radially outward from the drive shaft toward the upper flange. A spinner body is coupled with the slinger basket and includes a roof contacting and extending radially outward from the upper flange such that the upper opening is substantially unobstructed by the spinner body. A spinner side wall extends axially downward from the roof and includes a fiberizing region including a plurality of fiberizing holes provided therein. 1. A system for producing fibers from molten material , the system comprising:a drive shaft rotatable about an axis extending in an axial direction;a slinger basket including a base, a side wall, an upper flange, and an interior void, the base extending radially outward from a joint operatively coupling the drive shaft and the slinger basket, the side wall extending axially upward from the base and including a plurality of distribution holes defined therein, the upper flange extending radially from the side wall, the interior void extending radially from the drive shaft to the side wall and extending axially from the base to an upper opening, the upper opening extending radially outward from the drive shaft toward the upper flange; anda spinner body coupled with the slinger basket, the spinner body including a roof contacting and extending radially outward from the upper flange such that the upper opening is substantially unobstructed by the spinner body, a spinner side wall extending axially downward from the roof and including a fiberizing region including a plurality of fiberizing holes provided therein, and a lower flange extending ...

Apparatus for producing organic fibers

Apparatus for producing organic fibers by means of a centrifugal spinning process. The fiberizing disc and the molten material introduction nozzle are designed to prevent the molten material from escaping the disc prior to being fiberized. The heater for heating the material in the disc is designed to accommodate the lower melt temperature of the material to be fiberized. Also, means are provided for diverting the flow of fibers from the disc to cause the fibers to be more precisely or uniformly deposited. The fibers are substantially immediately cooled upon exiting the fiberizing disc, resulting in a fiber structure that is at least about 60% amorphous.

Hollow mineral fibers using rotary process

In a method for producing hollow mineral fibers such as glass fibers, molten glass is supplied to a rotating glass spinner having a peripheral wall. The spinner rotates so that molten glass is centrifuged through a first tube positioned at least mostly inside the peripheral wall of the spinner in an orifice to form fibers. Gas is introduced into the interior of the molten glass to form hollow glass fibers. A second tube positioned inside the first tube includes an inlet in the wall of the first tube, wherein the orifice and first tube are adapted to allow gas to be introduced through the inlet from outside the peripheral wall. The hollow glass fibers are then collected to form a product such as a mat.

Glass mat thermoplastic product

A composite sheet is made of a moldable resin and reinforcement fibers, where the resin is a thermoplastic resin, thermosetting resin or mixture thereof, and the reinforcement fibers are fibers centrifuged from a rotary process fiberizer, where the composite sheet has at least 5 distinct layers of reinforcement fibers per mm of thickness. The composite sheet has at least 10 distinct layers of reinforcement fibers, and preferably at least 30 distinct layers. At least 85 percent of the reinforcement fibers are monofilaments, and the reinforcement fibers are wool glass fibers.

Process of making a non-woven web

A non-woven web, comprising one or more polymeric fibers, wherein the number-average fiber diameter distribution of said one or more polymeric fibers conforms to a Johnson unbounded distribution. Non-woven webs comprising such polymeric fibers are rendered with mean-flow pore size and porosity desirable for specific filtration applications such as hepafiltration.

Serially deposited fiber materials and associated devices and methods

Fibrous materials and methods of manufacturing fibrous materials are disclosed. In particular, this application discloses methods of making and processing serially deposited fibrous structures, such as serially deposited fibrous mats. Serially deposited fibrous mats may be used in implantable medical devices with various characteristics and features. Serially deposited fibrous mats of various mat thickness, fiber size, porosity, pore size, and fiber density are disclosed. Additionally, serially deposited fibrous mats having various amounts of fiber structures (such as intersections, branches, and bundles) per unit area are also disclosed.

Rotary process for forming uniform material

A process is provided for issuing material from a nozzle in a rotor rotating at a given rotational speed wherein the material is issued by way of a fluid jet. The material can be collected on a collector concentric to the rotor. The collector can be a flexible belt moving in the axial direction of the rotor. The collected material can take the form of discrete particles, fibers, plexifilamentary web, discrete fibrils or a membrane.

Process for forming uniformly distributed material

A fluidized mixture is issued from a nozzle comprising a fan jet at the outlet, causing the mixture to spread as it is issued. The issued material is collected on a moving collection surface located a distance of between 0.25 and 13 cm from the outlet of the nozzle, prior to the onset of large scale turbulence in the fluid jet. The resulting product has good basis weight uniformity.

ENGINEERED POLYMERIC VALVES, TUBULAR STRUCTURES, AND SHEETS AND USES THEREOF

The present invention provides engineered valves, tubular structures, and sheets comprising oriented polymeric fibers, e.g., nanofibers, methods of fabricating such structures, and methods of use of such structures as, for example, patches, grafts and valves, e.g., cardiac valves.

Bioresorbable wound dressings

Process for the reproducible preparation of particles having differing geometries from polymer dispersions, melts or solutions

Particles or threads of polymer dispersion produced A method of making particles of varying geometry from polymer dispersions, melts or solutions in reproducible manner consists of projecting the small spheres, filaments or flakes of the dispersion etc. radially outwards from a revolving disc while they are still liquid into a film of precipitation or fixing agent revolving in both the same and in the opposite direction. The particles or filaments are coagulated and fixed in this film and are structured due to their different depths of penetration. Pref., the film is formed on the inner wall of a hollow cylindrical, conical or curved revolving vessel closed at one end. The inner surfaces of this vessel may comprise annular depressions and raised zones, which lead to local acceleration and retardation in the velocity of the film. Used for the prodn. of fibrous, flake-shaped or spherical small particles of polymer to varying geometries. The product is reproducible and has a narrow form spectrum ...

ОПИЛОЧНАЯ ЩЕЛОЧНАЯ ЦЕЛЛЮЛОЗА С НИЗКИМИ ЗНАЧЕНИЯМИ СРЕДНЕЙ СТЕПЕНИ ПОЛИМЕРИЗАЦИИ И СПОСОБ ЕЕ ПРОИЗВОДСТВА

Изобретение относится к опилочным целлюлозным массам, используемым для изготовления лиоселльных волокон. Целлюлозная масса содержит обработанную щелочную целлюлозную массу, содержащую гемицеллюлозу в количестве, по меньшей мере, 7 % по массе; целлюлозу, имеющую среднюю степень полимеризации от примерно 200 до примерно 1100; медное число меньше примерно 2,0; больше 4 % волокон целлюлозной массы имеют взвешенную по длине среднюю длину волокон меньше 2,0 мм. Лиоселльное волокно содержит гемицеллюлозу в количестве, по меньшей мере, 7 % по массе; целлюлозу, имеющую среднюю степень полимеризации от примерно 200 до примерно 1100; медное число меньше примерно 2,0; больше 4 % волокон целлюлозной массы имеют взвешенную по длине среднюю длину волокон меньше 2,0 мм. Способ изготовления состава для превращения в лиоселльное волокно включает варку сырья в варочном котле для получения щелочной целлюлозной массы, в которой сырье содержит опилки в количестве больше 0 % и до 100 %, и контакт щелочной целлюлозной ...

МНОГОКОМПОНЕНТНЫЕ ВОЛОКНА, ПОЛУЧЕННЫЕ СПОСОБОМ РОТАЦИОННОГО ПРЯДЕНИЯ

... 1. Многокомпонентное волокно, содержащее первый компонент и второй компонент, которые совместно образуют тело (11) волокна, причем первый компонент состоит из первого сырьевого материала (1) для волокна, причем второй компонент состоит из второго сырьевого материала (3) для волокна, отличающееся тем, что оно получено с помощью способа ротационного прядения.2. Многокомпонентное волокно по п.1, отличающееся тем, что оно содержит биосовместимый компонент и/или является биологически разлагаемым в организме человека или животного.3. Многокомпонентное волокно по п.1 или 2, отличающееся тем, что, по меньшей мере, один компонент содержит лекарственное средство или изготовлен из лекарственного средства.4. Многокомпонентное волокно по п.1 или 2, отличающееся тем, что, по меньшей мере, один компонент содержит вещество, структура которого разрушается после, по меньшей мере, двухминутного нагревания при температуре, по меньшей мере, 50°С.5. Многокомпонентное волокно по п.1 или 2, отличающееся тем, что ...

ОПИЛОЧНАЯ ЩЕЛОЧНАЯ ЦЕЛЛЮЛОЗА С НИЗКИМИ ЗНАЧЕНИЯМИ СРЕДНЕЙ СТЕПЕНИ ПОЛИМЕРИЗАЦИИ И СПОСОБ ЕЕ ПРОИЗВОДСТВА

... 1. Целлюлозная масса, содержащая: обработанную щелочную целлюлозную массу, содержащую: (a) гемицеллюлозу в количестве по меньшей мере 7% по массе; (b) целлюлозу, имеющую среднюю степень полимеризации от примерно 200 до примерно 1100; (c) медное число меньше примерно 2,0; и (d) больше 4% волокон целлюлозной массы имеют взвешенную по длине среднюю длину волокон меньше 2,0 мм. 2. Целлюлозная масса по п.1, отличающаяся тем, что упомянутая обработанная щелочная целлюлозная масса получена из древесины. 3. Целлюлозная масса по п.2, отличающаяся тем, что обработанная щелочная целлюлозная масса получена по меньшей мере из одного вида хвойных деревьев, выбираемого из группы, состоящей из пихты, сосны, ели, лиственницы, кедра и тсуги. 4. Целлюлозная масса по п.2, отличающаяся тем, что обработанная щелочная целлюлозная масса получена по меньшей мере из одного вида лиственных деревьев, выбираемого из группы, состоящей из акации, ольхи, осины, дуба, камедного дерева, эвкалипта, тополя, гмелины и клена ...

Устройство для центробежного формования нитей из полимерной массы

FELT MAT ITS PRODUCTION PROCESS

Verfahren und Anlage zum Spinnen von schmelzbaren Stoffen

VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON POLYKRISTALLINEN ALUMINIUMOXIDFASERN

Method and apparatus for spinning fibers

... 1,132,135. Fibre spinning apparatus. MONSANTO CO. 10 June, 1966 [16 June, 1965 (2)], No. 25973/66. Heading B5B. A method for producing fine fibres from a synthetic organic polymer comprises feeding said polymer in liquid form on to the internal concave face of a rotating conoid surface, adjusting the flow of the said liquid with relation to the speed of rotation of the conoid surface so that a continuous moving film of said liquid is formed and substantially covers said internal concave face, whereby said liquid will be discharged as elongated droplets from the periphery of said surface by the centrifugal force resulting from the rotation of said surface, surrounding the periphery of said surface with an annular gas stream flowing substantially parallel with the axis of rotation of said surface, entraining the discharged elongated droplets in said gas stream, and adjusting the temperature thereof with relation to the rate of flow so that fine fibres of the said polymer are formed in the ...

PROCESS AND APPARATUS FOR PRODUCING CARBON FIBER MAT

APPARATUS FOR PRODUCTION OF PRECURSOR OF ALUMINA FIBER

Arrangement for the production of twisted artificial silk threads and the like

... 305,280. Sindl, O. Nov. 28, 1927. Apparatus f o r making filaments.- To avoid the necessity for the use of stuffing boxes under high pressure between the spinning pump and nozzle, when rotating spinning nozzles are employed for the purpose. of producing twisted threads of artificial silk &c., the spinning nozzle 12 is mounted on the pump shaft 3, and the latter together with the pump body are both rotated at speeds such that the shaft rotates slowly with respect to the pump body. Gearing 5, 13 is provided for rotating the pump shaft and pump body respectively. Spinning solution is contained in a stationary vessel 1 connected to the pump shaft by a stuffing box 4.

SPINNING OF YARN

DEVICE TO GEWINNING OF FIBERS FROM MELTED MINERAL MATERIALS AND YOUR PRODUCTION

PROCEDURE FOR THE PRODUCTION OF CELLULOSE FIBERS AND FILAMENTS

COMPOSITION FOR THE PRODUCTION OF LYOCELLFASERN

SPIN HEAD WITH FLOW-LIMITING EMPLOYMENTS

PROCEDURE FOR THE PRODUCTION OF ORGANIC FIBERS

MORE LYOZELLFASER AND COMPOSITIONS TO YOUR PRODUCTION

MANUFACTURE FROM FIBERS BY CENTRIFUGATION AND BLOWING.

PROCEDURE FOR THE PRODUCTION OF CONNECTION FIBERS FROM POLYMER DISPERSIONS.

SPIN PROCEDURE.

PROCEDURE AND APPARATUS FOR WITH EXTRUDING COMBINED CENTRIFUGAL SPIDERS.

UTILISATION DE BOIS A FAIBLE MASS VOLUMIQUE POUR PRODUIRE PRODUITS LYOCELL

USE OF WOOD WITH LOW SPECIFIC WEIGHT FOR THE PRODUCTION OF LYOZELLPRODUKTEN

PROCEDURE AND DEVICE FOR THE PRODUCTION OF FIBROUS MATERIALS FROM THERMOPLASTIC PLASTICS

SPINNING FIBRES

A method of and an apparatus for fibring mineral wool by free centrifugation

CONTROL OF FIBERIZATION OF THERMOPLASTIC MATERIAL

Apparatus, systems and methods for producing particles using rotating capillaries

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

Fibre-forming centrifuge, device and method for forming mineral fibres

A centrifuge to rotate about a rotation axis, the centrifuge including: an annular wall pierced with a plurality of holes, the annular wall having the rotation axis as its axis of symmetry; and a row of one continuous relief or of discontinuous reliefs, situated on an outer surface of the centrifuge, on the annular wall and/or above and close to the annular wall when the centrifuge is in a centrifuging position, the row being horizontal or inclined at an angle of more than 0° and less than 90° relative to the horizontal when the centrifuge is in the centrifuging position. The centrifuge makes it possible to improve energy consumption of a device for forming mineral fibers furnished with the centrifuge.

Multilayer apparatuses and methods for the production of microfibers and nanofibers

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

Multi-component fibers produced by a rotational spinning method

A multi-component fiber includes a first component made of a first fiber raw material and a second component made of a second fiber raw material. The first and second components are combined by rotational spinning so as to firm a fiber body.

METHOD FOR PRODUCING TERYLENE FIBER USING POLYESTER WASTE

A method for producing terylene fiber using polyester waste is disclosed. Firstly, dried polyester waste is sent into a screw extruder, then is melt and extruded to be polyester melt. Whereafter, the melt is filtrated twice to remove impurities. Then macromolecule polymerization reaction is taken place in the polyester melt to homogenize the molecular weight of macromoleclar polymer and to increase the viscosity of the polyester. Then the melt with increased viscosity is finely filtrated using melt precision filter. Whereafter, the melt is sent into a spinning box to execute metering spinning, then is cooled and solidified to be filaments. Finally, the filaments are wound according to various process requirements. The method can increase the quality of regenerated polyester spinning melt. The regenerated polyester melt has less impurities and homogenous viscosity after multiple filtrating. The fiber product has advantages of less end breakage rate, high full-bobbin rate, high finished product rate and less wastage. 1. A method for producing terylene fiber using polyester waste is achieved by a nozzle assembled to a bottle , the nozzle comprising:a press cover, a revolving cover, and a cylinder to construct the appearance of the nozzle;the press cover having a first tube extending therefrom, a first channel defined in the first tube for melting substances or liquid to flow through;the revolving cover being screwed on an opening of the bottle for sealing the bottle;the cylinder having an upper chamber and a lower chamber, the upper chamber abutting against the inner wall of the opening of the bottle;a first melt precision filter, a spinning box, a connecting tube, a first piston, a spring, a second piston, a needle valve and an unidirectional valve being assembled into the nozzle;the first melt precision filer having a second tube defined therethrough, a first filtrated mesh being set on the bottom of the second tube, a net being set on the top of the second tube;the ...

APPARATUSES AND METHODS FOR THE PRODUCTION OF MICROFIBERS AND NANOFIBERS

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. 1. A device for use in a microfiber and/or nanofiber producing system , the device comprising:a body comprising a body cavity and a coupling member, wherein the body cavity is configured to receive material to be produced into a fiber, wherein the body is couplable to a driver through the coupling member; andat least two blades extending from the body, wherein each of the blades comprises a blade cavity coupled to the body cavity, wherein material to be produced into a fiber passes from the body cavity to the blade cavity during use, and wherein one or more openings are formed at or proximate to an end of each blade extending through a side wall of the blade;wherein, during use, rotation of the body causes material in the body to be ejected through one or more openings to produce microfibers and/or nanofibers.2. The device of claim 1 , wherein the device comprises:a first member comprising: a first member central portion; at least two arms extending from the first member central portion; a first member coupling surface formed along an edge of the first member central portion and the arms extending from the first member central portion; and one or more grooves formed in the first member coupling surface, proximate to an end of the arms,a second member comprising: a second member central portion; at least two arms extending from a second member central portion; a second member coupling surface formed along an edge of the second member central portion and the arms extending from the second member central portion; and one or more grooves formed in the first member coupling surface, proximate to an end of the arms, wherein the fiber producing device is couplable to a driver through the coupling member;wherein the first ...

DEVICES AND METHODS FOR THE PRODUCTION OF MICROFIBERS AND NANOFIBERS HAVING ONE OR MORE ADDITIVES

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers, which include additives that modify one or more properties of the produced fibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. 1. A method of producing microfibers and/or nanofibers , comprising: 'a body comprising one or more openings and a coupling member, wherein the body is configured to receive material to be produced into a fiber, and wherein the fiber producing device is coupled to the driver by the coupling member;', 'placing material in a fiber producing device, the material comprising a polymer and an ionizing compound, the fiber producing device comprisingrotating the fiber producing device at a speed of at least about 1000 rpm, wherein rotation of the fiber producing device causes material in the body to be passed through one or more openings, into one or more outlet elements, and ejected through one or more outlet elements to produce microfibers and/or nanofibers; andcollecting at least a portion of the produced microfibers and/or nanofibers using an electrically charged plate.2. The method of claim 1 , wherein the ionizing compound is an ionic surfactant.3. The method of claim 1 , wherein the ionic surfactant comprises an anionic surfactant.4. The method of claim 1 , wherein the ionic surfactant comprises a cationic surfactant.5. The method of claim 1 , wherein the ionizing compound is an organic salt.6. The method of claim 1 , wherein the ionizing compound is an inorganic salt.7. The method of claim 1 , wherein the ionizing compound is a metal halide.8. The method of claim 1 , wherein the ionizing compound is a Group 1 or Group 2 halide salt.9. The method of claim 1 , wherein the ionizing compound is an ionomer.10. The method of claim 1 , wherein ionizing material is a conductive carbon compound.11. The method of claim 1 , further comprising ...

DEVICES AND METHODS FOR THE PRODUCTION OF MICROFIBERS AND NANOFIBERS

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers, that include additives that modify one or more properties of the produced fibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. Fiber producing devices with features that enhance fiber production and adaptability to different types of fiber are described. 1. A device for use in a microfiber and/or nanofiber producing system , the device comprising:a substantially circular body, wherein a diameter of the body varies between a top surface of the body and a bottom surface of the body,an internal cavity disposed in the body, wherein the internal cavity receives material to be produced into a fiber,one or more openings that allow material to be passed from the internal cavity to the exterior of the body;a coupling member, wherein the body is couplable to a driver through the coupling member; andwherein, during use, rotation of the body causes material in the body cavity to be passed through one or more openings and ejected from one or more material outlets to produce microfibers and/or nanofibers.2. The device of claim 1 , wherein the shape of the body creates a predefined airflow in a region proximate to the openings.3. The device of claim 1 , wherein the diameter of the body proximate to the top surface is less than the diameter of the body proximate to the center of the body.4. The device of claim 1 , wherein the diameter of the body proximate to the bottom surface is less than the diameter of the body proximate to the center of the body.5. The device of claim 1 , wherein the diameter of the body proximate to the top surface is less than the diameter of the body proximate to the center of the body claim 1 , and wherein the diameter of the body proximate to the bottom surface is less than the diameter of the body proximate to the center of the body.6. The device ...

SYSTEMS AND METHODS OF HEATING A FIBER PRODUCING DEVICE

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. Systems and methods of heating the fiber producing device, before and during use, are also described herein. 1. A microfiber and/or nanofiber producing system comprising:a fiber producing device comprising a body comprising one or more openings and a coupling member, wherein the body is configured to receive a material to be produced into a fiber;an inductive heater positioned proximate to the fiber producing device such that, during use, the inductive heater induces an electrical current in the body, wherein the body is heated by the induced electrical current; anda driver capable of rotating the fiber producing device, wherein the fiber producing device is couplable to the driver through the coupling member; andwherein the inductive heater is stationary with respect to the fiber producing device when the fiber producing device is rotated;wherein, during use, rotation of the fiber producing device causes material in the body to be passed through one or more openings and ejected from one or more openings to produce microfibers and/or nanofibers.2. The system of claim 1 , wherein the body comprises a channel claim 1 , and wherein at least a portion of a coil of the inductive heater is positioned within the channel.3. The system of claim 2 , further comprising an inductive transparent material disposed in the channel.4. The system of claim 1 , further comprising an insulative layer coupled to a bottom surface of the body.5. The system of claim 1 , wherein the body has features that modify the path of the induced current flow through the body.6. The system of claim 1 , wherein the shape of the body produces a homogenous distribution of current through the body.7. The system of claim 1 , wherein the inductive heater ...

PROCESS FOR MAKING HIGH-PERFORMANCE POLYETHYLENE MULTIFILAMENT YARN

Processes for making high-performance polyethylene multi-filament yarns include the steps of a) making a solution of ultra-high molar mass polyethylene in a solvent; b) spinning of the solution through a spinplate containing at least 5 spinholes into an air-gap to form fluid filaments, while applying a draw ratio DRfluid; c) cooling the fluid filaments to form solvent-containing gel filaments; d) removing at least partly the solvent from the filaments; and e) drawing the filaments in at least one step before, during and/or after said solvent removing, while applying a draw ratio DRsolid of at least 4. 1. A ballistic-resistant assembly comprising a plurality of mono-layers consisting essentially of high-performance polyethylene multifilament yarn , the assembly having an areal density of at least 1.5 kg/mand a specific energy absorption of at least 300 J·m/kg as measured against a 9*19 mm FMJ Parabellum bullet according to a test procedure based on Stanag 2920.2. The ballistic-resistant assembly according to claim 1 , wherein the mono-layers contain uni-directionally oriented filaments claim 1 , with the fibre direction in each mono-layer being rotated with respect to the fibre direction in an adjacent mono-layer.3. The ballistic-resistant assembly according to claim 1 , wherein the specific energy absorption of the panel is at least 325 J·m/kg.4. A process for making high-performance polyethylene multifilament yarn comprising the steps ofa) providing a 3-25 mass % solution of ultra-high molar mass polyethylene having an intrinsic viscosity as measured on solutions in decalin at 135° C. of between about 8 and 40 dl/g, in a solvent;{'sub': fluid', 'fluid', 'sp', 'ag', 'sp', 'ag', 'sp', 'ag, 'b) spinning of the solution through a spinplate containing at least 5 spinholes into an air-gap to form fluid filaments, while applying a draw ratio DRof at least 150, wherein DR=DR×DRwhere DRis the draw ratio in the spinholes and DRis the draw ratio in the air-gap, with DRbeing ...

APPARATUS, SYSTEMS AND METHODS FOR PRODUCING PARTICLES USING ROTATING CAPILLARIES

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

HIGH-PERFORMANCE POLYETHYLENE MULTIFILAMENT YARN

Processes for making high-performance polyethylene multi-filament yarn are disclosed which include the steps of a) making a solution of ultra-high molar mass polyethylene in a solvent; b) spinning of the solution through a spinplate containing at least 5 spinholes into an air-gap to form fluid filaments, while applying a draw ratio DR; c) cooling the fluid filaments to form solvent-containing gel filaments; d) removing at least partly the solvent from the filaments; and e) drawing the filaments in at least one step before, during and/or after said solvent removing, while applying a draw ratio DRof at least 4, wherein in step b) each spinhole comprises a contraction zone of specific dimension and a downstream zone of diameter Dn and length Dn with Ln/Dn of from 0 to at most 25, to result in a draw ratio DR=DR*DRof at least 150, wherein DRis the draw ratio in the spinholes and DRis the draw ratio in the air-gap, with DRbeing greater than 1 and DRat least 1. High-performance polyethylene multifilament yarn, and semi-finished or end-use products containing said yarn, especially to ropes and ballistic-resistant composites, are also disclosed. 1. A preformed sheet comprising four mono-layers , each mono-layer comprising filaments from multifilament polyethylene yarn , the polyethylene having an IV of between 8 and 40 dl/g as measured on decalin solutions at 135° C. , wherein said filaments in said mono-layers are spread uni-directionally; and wherein the direction of the filaments in each mono-layer is rotated with respect to the direction of the filaments in an adjacent layer , and wherein the preformed sheet exhibits a specific energy absorption of more than 265 and at most 479 J·kg/magainst a 9*19 mm FMJ Parabellum FMJ bullet , as measured on panels assembled from a plurality of the preformed sheets having an areal density of 2.0 kg/m.2. The preformed sheet of claim 1 , wherein the preformed sheet exhibits a specific energy absorption of between 280 and 479 J·kg/ ...

Elastic fibre dry spinning mechanism and maintenance control method for spinning assembly

The present invention provides an elastic fiber dry spinning mechanism and a maintenance control method for a spinning assembly. The elastic fiber dry spinning mechanism includes: a spinning assembly ( 1 ) including a temperature control portion ( 13 ) and a spinneret portion ( 14 ), which are detachably overlapped with each other; and a rotary movement control portion used for driving the spinning assembly to ascend and descend, translate and rotate around a translation direction so as to change the orientation of the spinning assembly into an orientation facilitating the maintenance of the spinneret portion. By adoption of the spinning mechanism and the maintenance control method therefore, online replacement and other maintenance of the spinneret portion are convenient and quick, and the efficiency is high.

PROCESS AND PRODUCT OF HIGH STRENGTH UHMW PE FIBERS

An improved process for solution spinning of ultra-high molecular weight polyethylene (UHMW PE) filaments, wherein the 10 wt % solution of the UHMW PE in mineral oil at 250° C. has a Cogswell extensional viscosity and a shear viscosity within select ranges. 120-. (canceled)21. A solid ultra-high molecular weight polyethylene (UHMW PE) filament produced by a process comprising the steps of: {'br': None, 'sup': '0.8', 'λ≧5,917(IV);'}, 'a) selecting an UHMW PE having an intrinsic viscosity (IV) from about 5 dl/g to about 45 dl/g when measured in decalin at 135° C., wherein a 10 wt. % solution of the UHMW PE in mineral oil at 250° C. has a Cogswell extensional viscosity (λ) in accordance with the following formulab) dissolving the UHMW PE in a solvent at elevated temperature to form a solution having a concentration of from about 5 wt. % to about 50 wt. % of UHMW PE;c) discharging the solution through a spinneret to form solution filaments;d) cooling the solution filaments to form gel filaments;e) removing solvent from the gel filaments to form solid filaments containing less than about 5 wt. % of solvent;f) stretching at least one of the solution filaments, the gel filaments and the solid filaments to a combined stretch ratio of at least 10:1, wherein the solid filaments are stretched to a ratio of at least 2:1. stretch ratio of at least 10:1, wherein at least 2:1 is of the solid filaments.22. The solid ultra-high molecular weight polyethylene filament of claim 21 , wherein the 10 wt. % solution of the UHMW PE in mineral oil at a temperature of 250° C. has an Cogswell extensional viscosity at least 65 claim 21 ,000 Pa-s.23. The solid ultra-high molecular weight polyethylene filament of claim 21 , wherein the 10 wt. % solution of the UHMW PE in mineral oil at a temperature of 250° C. has a Cogswell extensional viscosity (λ) in accordance with the following formula:{'br': None, 'sup': '0.8', 'λ≧7,282(IV).'}24. The solid ultra-high molecular weight polyethylene filament ...

MULTI-COMPONENT ROTARY SPINNER APPARATUSES SYSTEMS AND METHODS FOR PRODUCING FIBER FROM MOLTEN MATERIAL

Rotary spinner apparatuses, systems and methods for producing fibers from molten materials are disclosed. Certain exemplary embodiments include rotary spinners including a hub, a slinger, an annular member, a retaining member, and a plurality of fasteners. In certain embodiments the hub, the retaining member, and the plurality of fasteners are structured to limit axial movement of the annular member relative to the hub member and to allow radial expansion and contraction of the annular member relative to the hub member. In certain embodiments the annular member is structured to contact the hub at a plurality of contact areas and is spaced apart from the hub at a plurality of gap areas. In certain embodiments the slinger is structured to contact the hub at a plurality of contact areas and is spaced apart from the hub at a plurality of gap areas. 1. A rotary spinner apparatus for producing fibers from molten material comprising:a hub member extending radially outward relative to a central axis and being rotatable about the central axis;an annular member including a lower wall extending radially outward, a side wall extending axially upward from the lower wall, and an upper wall extending radially inward from the side wall, a first side of the lower wall contacting the hub member, a plurality of apertures being formed in the side wall;a retaining member facing a second side of the lower wall;a plurality of fasteners coupling the retaining member and the hub member, the retaining member, the hub member and the plurality of fasteners structured to limit axial movement of the annular member relative to the hub member and structured to allow radial expansion and contraction of the annular member relative to the hub member; anda slinger member positioned radially inward from the annular member and extending radially outward toward the annular member, the slinger member contacting the hub member.2. The apparatus of wherein the first side of the lower wall contacts the hub ...

FIBRE PRODUCING MACHINE WITH IMPROVED MAINTENANCE

A machine for fiberizing mineral wool by free centrifugation, includes a frame on which is mounted at least one centrifugation wheel, the centrifugation wheel being connected to a transmission shaft designed to rotate it by transmitting the movement of rotation of an output shaft of a drive unit, wherein the machine further includes at least one intermediary transmission box connected at least by one input to the drive rod and by one output to the transmission shaft, the intermediary transmission box being arranged such as to transmit the movement of rotation of the drive shaft to the transmission shaft. 1. A machine for fiberizing mineral wool by free centrifugation , comprising a frame on which is mounted at least one centrifugation wheel , said at least one centrifugation wheel being connected to a transmission shaft adapted to rotate the at least one centrifugation wheel by transmitting a movement of rotation of an output rod of a drive unit , wherein said machine further comprises at least one intermediary transmission box connected at least by one input to the output rod of the drive unit and by at least one output to the transmission shaft , said at least one intermediary transmission box being arranged such as to transmit the movement of rotation of the output rod of the drive unit to the transmission shaft.2. The fiberizing machine as claimed in claim 1 , comprising a plurality of centrifugation wheels claim 1 , each centrifugation wheel being connected to a transmission shaft and comprising an intermediary transmission box for each transmission shaft.3. The fiberizing machine as claimed in claim 2 , wherein each transmission box comprises a chassis in which a rod is mounted claim 2 , said rod comprising coupling means for coupling to the transmission shaft and to the drive.4. The fiberizing machine as claimed in claim 2 , wherein each transmission box comprises a chassis in which a first rod and a second rod are arranged and extend in parallel in the same ...

PROCESS FOR LAYING FIBROUS WEBS FROM A CENTRIFUGAL SPINNING PROCESS

A method for laying down a nanoweb of nanofibers from a centrifugal spinning process by a combination of an air flow field and a charging arrangement. Fibrous streams in the form of fibrils of molten polymer or polymer solution are discharged from a rotating member into an air flow field that is essentially parallel to the direction of discharge of fibrils at the point of discharge of the fibrils. The fibrous streams are attenuated and directed by means of the air flow field onto the surface of a collector to form a nanoweb. The fibrous streams are charged along all or at least a portion of their route from the point of discharge to the surface of the collector. 2. The method of in which the web has a uniformity index range 0.1 to 5 when measured on a sample size of 90 by 60 cm at 3000 by 2000 pixels.3. The method of wherein the attenuation of step (ii) is caused by the centrifugal force of ejection of fibrils from the point of discharge.4. The method of in which the nanofibers are directed to the collector by a shaping air flow that is essentially perpendicular to the collector surface.5. The method of in which the air flow field at step (iii) further comprises a flow of air into at least a portion of the collector surface where the flow of air is essentially perpendicular to the collector from a region between the body of the rotating member and the collector surface.6. The method of in which the air flow field at step (i) comprises air from a nozzle that has an opening that is located on a radius of the cup or disk claim 1 , and the air flow is directed at an angle to the radius of between 0 and 60 degrees and in a direction opposite to the direction of rotation of the disk.7. The method of in which the rotating member comprises a disk or cup and fibrils are discharged from the edge of the surface of said disc or cup or from orifices located in or on the surface or cup.8. The method of in which the spinning process further comprises the step of attenuating the ...

METHODS, SYSTEMS, AND APPARATUSES FOR MANUFACTURING ROTATIONAL SPUN APPLIANCES

The present disclosure relates to methods and systems for manufacturing rotational spun materials. The rotational spun materials are medical appliances or other prostheses made of, constructed from, covered or coated with rotational spun materials, such as polytetrafluoroethylene (PTFE). 1. A method of making a rotational spun appliance , the method comprising:rotating a spinneret around a first axis of rotation to produce spinning fibers;rotating a plurality of mandrels, each mandrel rotating about its own axis of rotation, wherein each mandrel's axis of rotation is not the same as the first axis of rotation; andcontacting the spinning fibers with the rotating mandrels, such that fibers are deposited on the mandrels.2. The method of claim 1 , wherein the plurality of mandrels are collectively and simultaneously rotating around the first axis of rotation.3. The method of claim 1 , wherein each mandrels' own axis of rotation is radially tangential to the first axis of rotation.4. The method of claim 1 , wherein each mandrel's own axis of rotation is perpendicular to the first axis of rotation.5. The method of claim 4 , wherein the rotation of each mandrel around its own axis of rotation results in the surface of the mandrel turning in the same direction as the spinning fibers are spinning.6. The method of claim 4 , wherein the rotation of each mandrel around its own axis of rotation results in the surface of the mandrel turning in an opposite direction as the spinning fibers are spinning.7. The method of claim 1 , wherein the fibers are microfibers or nanofibers.8. The method of claim 1 , wherein the fibers are polymer fibers.9. The method of claim 1 , further comprising placing fiber-wrapped mandrels in a sintering oven and sintering the fiber-wrapped mandrels.10. The method of claim 1 , wherein the rotational spun appliance is a stent claim 1 , stent graft claim 1 , or graft.11. A method of manufacturing a component of a medical appliance claim 1 , the method ...

SUPERFINE FIBER CREATING SPINNERET AND USES THEREOF

Apparatuses and methods for the production of superfine fibers. 129-. (canceled)30. A method of creating fibers comprising:placing a composition into a spinneret comprising one or more openings, wherein the composition comprises a cellulose ester and a solvent capable of dissolving at least a portion of the cellulose ester; androtating the spinneret about a spin axis such that rotation of the spinneret causes at least a portion of the material disposed in the spinneret to be ejected through the one or more of the openings and form the fibers as the ejected material solidifies.31. The method of claim 30 , wherein the spinneret comprises a body defining a central reservoir claim 30 , which receives the composition claim 30 , and one or more channels extending from the central reservoir to the one or more openings.32. The method of claim 31 , wherein one or more of the channels have a diameter that is greater than the diameter of the openings.33. The method of claim 31 , wherein the reservoir is a substantially circular reservoir and wherein the channels extend radially from the circular reservoir to the openings.34. The method of claim 30 , further comprising: heating the composition to a temperature greater than room temperature.35. The method of claim 34 , further comprising heating the spinneret to a temperature at or near the temperature of the composition.36. The method of claim 30 , wherein the openings have a size that promotes the formation of microfibers.37. The method of claim 30 , wherein the openings have a size that promotes the formation of nanofibers.38. The method of claim 30 , further comprising collecting the fibers on a collection device that at least partially surrounds the spinneret while the spinneret is being rotated.39. The method of claim 30 , further comprising heating the spinneret with a heater thermally coupled to the spinneret.40. The method of claim 30 , further comprising surrounding the spinneret in a housing claim 30 , wherein the ...

FIBERS AND OTHER CONSTRUCTS TREATED WITH DIATOMITE PARTICLES

Constructs consisting of diatomized fibers, filaments, yarns, woven and non-woven textiles, fiber-based films, mats, and membranes, other constructs and finished products made from the foregoing. The inventive subject matter is particularly directed to apparel products and molded footwear outsoles, and other molded or textile-based products, wherein a plurality of diatomite particles embedded in the surface of a construct impart desired functionalities, such as moisture management, odor control, or traction or grip enhancement, water and dirt repellency, and wear resistance. 1. A diatomized construct , comprising a fiber , filament or yarn having a plurality of diatomite particles embedded in the surface of the construct generally uniformly over a selected portion of the surface area of the construct.2. The diatomized construct claim 1 , of wherein the particles generally uniformly cover about 1-10% of the construct surface.3. The construct of wherein the particles generally uniformly cover 10-30% or thereabout of the construct surface.4. The construct of wherein the particles generally uniformly cover about 30% or more of the construct surface.5. The construct of wherein the construct comprises a thermoplastic material.6. (canceled)7. The construct of wherein the diatomite particles are present at 0.1% to 5% by fiber weight or thereabout in a thermoplastic material forming the construct.8. (canceled)9. The construct of wherein the particles have an average size of less than 5 μm or thereabout.10. The construct of wherein the particles have an average size of more than 200 μm or thereabout.11. The construct of further comprising a plurality of the diatomized fibers claim 1 , filaments claim 1 , and/or yarns arranged in a lattice structure.12. The textile of wherein the lattice comprises a woven or knit structure.1314.-. (canceled)15. The diatomized construct of wherein the structure comprises a first layer and further comprising a second adjacent knit or woven layer ...

MODIFICATION OF CONTINUOUS CARBON FIBERS DURING PRECURSOR FORMATION FOR COMPOSITES HAVING ENHANCED MOLDABILITY

Methods of producing a continuous carbon fiber for use in composites having enhanced moldability are provided. A continuous precursor fiber is formed that has a sheath and a core. The sheath includes a first polymer material. The core includes a second polymer material and a plurality of discrete regions distributed within the second polymer material. The discrete regions include a third polymer material. After the continuous precursor fiber is heated for carbonization and graphitization, the continuous precursor fiber forms a continuous carbon fiber having a plurality of discrete weak regions corresponding to the plurality of discrete regions in the core. Carbon fiber composites made from such modified continuous carbon fibers having enhanced moldability are also provided. 1. A method of producing a continuous carbon fiber for use in composites having enhanced moldability , the method comprising:forming a continuous precursor fiber comprising a sheath and a core, wherein the sheath comprises a first polymer material and the core comprises a second polymer material and a plurality of discrete regions distributed within the second polymer material, wherein the plurality of discrete regions comprises a third polymer material, wherein after the continuous precursor fiber is heated for carbonization and graphitization, the continuous precursor fiber forms a continuous carbon fiber having a plurality of discrete weak regions corresponding to the plurality of discrete regions in the core, wherein the continuous carbon fiber remains substantially intact until a molding process to form a carbon fiber composite.2. The method of claim 1 , wherein the forming comprises extruding a first polymer material in a first extruder to form the sheath and co-extruding the second polymer material and the third polymer material in a second extruder to form the core having a plurality of discrete regions of the third polymer material distributed within the second polymer material.3. The ...

MODIFICATION OF CONTINUOUS CARBON FIBERS DURING PRECURSOR FORMATION FOR COMPOSITES HAVING ENHANCED MOLDABILITY

Methods of producing continuous carbon fibers for composites having enhanced moldability are provided. Discrete regions are introduced into a continuous precursor fiber comprising an acrylic polymer material, such as polyacrylonitrile (PAN), as the precursor fiber is formed. The precursors may be heterogeneous fibers having a second distinct material interspersed in discrete regions with the acrylic polymer material. Alternatively, the precursors may be heterogeneous fibers where laser is applied to the acrylic polymer material in discrete regions to cause localized molecular disruptions. After the continuous precursor fiber is heated for carbonization and/or graphitization, the precursor forms a continuous carbon fiber having a plurality of discrete weak regions. These relatively weak regions provide noncontiguous break points that reduce stiffness and improve moldability for carbon fiber polymeric composites, while retaining high strength levels. Carbon fiber polymeric composites incorporating continuous carbon fibers having the plurality of discrete noncontiguous weak regions are also provided. 1. A method of producing a continuous carbon fiber for use in composites having enhanced moldability , the method comprising:incorporating a plurality of discrete regions into a continuous precursor fiber comprising a polymer material, wherein after the continuous precursor fiber is heated for carbonization and graphitization, the continuous precursor fiber forms a continuous carbon fiber having a plurality of discrete weak regions corresponding to the plurality of discrete regions.2. The method of claim 1 , wherein the polymer material is an acrylic polymer material and the incorporating of the plurality of discrete weak regions further comprises forming a stream of an acrylic polymer material and intermittently introducing a second distinct polymeric material into the stream to form a heterogeneous precursor fiber claim 1 , wherein the plurality of discrete regions forms ...

FOCUSED ROTARY JET SPINNING DEVICES AND METHODS OF USE THEREOF

Systems and methods for focused direction deposition of a micron or nanometer dimension polymeric fiber and materials of such fibers are described herein. Systems and methods employ one or more gas flows to entrain and deflect fibers produced by a rotary jet spinning system forming a focused fiber stream. Some embodiments enable control of alignment and distribution of the fibers with a relatively high fiber throughput. 1. A system for focused directional deposition of one or more micron or nanometer dimension polymeric fibers , the system comprising:{'claim-text': ['a first end;', 'a second end opposite the first end;', 'an outer sidewall extending from the first end to the second end, a shape of the reservoir including one or more apertures disposed radially inward from the outer sidewall of the reservoir that are configured to enable a gas to move through the reservoir from the first end to the second end; and', 'one or more orifices formed in the outer sidewall, each of the one or more orifices configured for ejection of the material radially outward through the orifice as an ejected jet during rotation of the reservoir; and'], '#text': 'a reservoir configured to hold a material including a polymer and rotatable about a rotation axis, the reservoir including:'}one or more gas flow sources, each configured to direct a flow of gas from upstream of the first end of the reservoir through the one or more apertures of the reservoir from the first end to the second end of the reservoir and downstream of the second end of the reservoir during rotation of the reservoir the one or more gas flow sources collectively forming a combined gas flow in a first direction downstream of the second end of the reservoir that entrains and deflects the one or more ejected jets to form a focused stream of the one or more micron or nanometer dimension polymeric fibers in a first direction, the first direction having an orientation that is within 5 degrees of the rotation axis of the ...

Devices and methods for the production of microfibers and nanofibers in a controlled environment

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. To improve the formation of fibers, various devices and systems for controlling the micro-environment around the fiber producing device are described.

PORTABLE APPARATUSES AND METHODS FOR THE PRODUCTION OF MICROFIBERS AND NANOFIBERS

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. 1. A hand held/portable device for the production of microfibers and/or nanofibers comprising:one or more motors,a fan coupled to at least one of the one or more motors;a spinneret comprising a body and one or more openings, the spinneret being coupled to at least one of the one or more motors, wherein the fan and spinneret are, during use, rotated substantially simultaneously;wherein, during use, rotation of the spinneret causes material placed in the body of the spinneret to be ejected through one or more of the openings to produce fibers, andwherein the fan is positioned with respect to the spinneret such that the fibers produced by the spinneret are blow away from the spinneret by the gas flow produced by the rotating fan.20. The device of claim , further comprising a material reservoir coupled to the body of the spinneret , wherein material disposed in the material reservoir is transferred to the spinneret body during use.30. The device of claim , wherein the motor , fan and spinneret are placed in a molded housing.40. The device of claim , wherein the molded housing comprises a handle.50. The device of claim , wherein the molded housing comprises a tapered outlet , wherein fibers produced by the spinneret are blow away from the spinneret into the tapered outlet.60. The device of claim , wherein the fan , the motor , and the spinneret are aligned along an axial axis of the molded housing.7. The device of claim 1 , wherein the fan and spinneret are positioned on opposing sides of the one or more motors.80. The device of claim claim 1 , comprising a first motor coupled to the fan and a second motor coupled to the spinneret.90. The device of claim claim 1 , wherein the first motor rotates the fan at a different ...

Apparatuses having outlet elements and methods for the production of microfibers and nanofibers

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. Described herein are fiber producing devices that have various types of outlet elements coupled to the fiber producing device.

Method of preparing doped and/or composite carbon fibers

A method of producing doped carbon fibers, doped systems to prepare graphene-fiber hybrid structures, or doped carbon nanostructures, includes forming doped polymer precursors and decomposing at least a portion of the polymeric precursors to form carbon fibers. The decomposition may be accomplished by treating the doped polymer precursors with acid vapor from an aqueous acid solution at a temperature of less than 250° C.

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.

FIBRE-FORMING PLATE

A spinner for fiberizing mineral fibers, in particular glass fibers, by centrifugation from a molten material, includes a peripheral barrel pierced with orifices for the passage of the molten material and for obtaining fibers by drawing during the centrifugation, a wheel center connecting the peripheral barrel to an upper flange for securing the spinner in a fiberizing device, a turnup extending the peripheral barrel in the bottom part of the spinner and making an angle β herewith, wherein the angle β is strictly less than 90°. 1. A spinner for fiberizing mineral fibers , by centrifugation from a molten material , comprising:a peripheral barrel pierced with orifices for the passage of molten material and for obtaining fibers by drawing during said centrifugation,a wheel center connecting said peripheral barrel to an upper flange for securing the spinner in a fiberizing device,a turnup extending said peripheral barrel in the bottom part of the spinner and making an angle β therewith,wherein the angle β is strictly less than 90°.2. The spinner as claimed in claim 1 , wherein the turnup has an angle of inclination α with respect to the horizontal that is less than or equal to 10°.3. The spinner as claimed in claim 1 , wherein the turnup has a total length less than 10% of a total diameter of the spinner.4. The spinner as claimed in claim 1 , wherein the turnup has claim 1 , over its entire length claim 1 , a substantially uniform thickness.5. The spinner as claimed in claim 1 , a diameter of which is comprised between 200 and 800 mm.6. The spinner as claimed in claim 1 , wherein the turnup has a total length less than 15% of a diameter of the spinner.7. The spinner as claimed in claim 1 , wherein the peripheral barrel makes an angle γ comprised between 1 and 10% with the vertical.8. The spinner as claimed in claim 1 , wherein the turnup has a total length less than 50% of the length measured claim 1 , in a radial plane of section claim 1 , between an exterior edge of ...

METHOD FOR APPLYING AN IMPLANTABLE LAYER TO A FASTENER CARTRIDGE

Methods for forming an implantable layer onto a staple cartridge are disclosed. 1. A method of applying an implantable layer to a cartridge body comprising the steps of:obtaining a staple cartridge body including staple cavities;heating a polymeric material; andaccelerating the heated polymeric material toward the staple cartridge body such that an implantable layer is formed over the staple cavities.2. The method of claim 1 , further comprising the step of inserting staples into the staple cavities before said accelerating step.3. The method of claim 1 , further comprising the steps of:cooling the heated polymeric material; andtrimming the polymeric material after said cooling step.4. The method of claim 3 , wherein the cartridge body comprises a periphery claim 3 , and wherein said implantable layer is trimmed according to the periphery during said trimming step.5. The method of claim 1 , wherein said heating step comprises heating the polymeric material above its glass transition temperature.6. The method of claim 1 , wherein said heating step comprises heating the polymeric material above its melt temperature.7. The method of claim 1 , further comprising the steps of:heating a second polymeric material; andaccelerating the second heated polymeric material toward the staple cartridge body such that a second implantable layer is formed over the staple cavities.8. The method of claim 1 , wherein the heated polymeric material comprises a first heated polymeric material claim 1 , and wherein said accelerating step comprises accelerating a second heated polymeric material with the first heated polymeric material toward the staple cartridge body.9. The method of claim 1 , wherein said method is performed without mixing the polymeric material with a solvent.10. The method of claim 1 , wherein said method is performed without mixing the polymeric material with dioxane.11. The method of claim 1 , wherein said accelerating step comprises accelerating the polymeric material ...

Immersed rotary jet spinning (irjs) devices and uses thereof

Exemplary embodiments provide systems, devices and methods for the fabrication of three-dimensional polymeric fibers having micron, submicron and nanometer dimensions, as well as methods of use of the polymeric fibers.

Fibrous Structures Exhibiting Improved Reopenability

Articles, such as sanitary tissue products, including fibrous structures, and more particularly articles including fibrous structures having a plurality of fibrous elements wherein the article exhibits differential cellulose content throughout the thickness of the article and methods for making same are provided. 1. A fibrous structure comprising a plurality of fibers wherein the fibrous structure exhibits a CRT Rate of greater than 0.35 g/sec as measured according to the Absorptive Rate and Capacity (CRT) Test Method and a Wet Web-Web CoF of less than 1.85 as measured according to the Wet Web-Web CoF Test Method.2. The fibrous structure according to wherein the fibrous structure further comprises a plurality of filaments.3. The fibrous structure according to wherein at least one of the filaments comprises a polymer.4. The fibrous structure according to wherein the polymer comprises a thermoplastic polymer.5. The fibrous structure according to wherein the thermoplastic polymer comprises a polyolefin.6. The fibrous structure according to wherein the polyolefin is selected from the group consisting of: polypropylene claim 5 , polyethylene claim 5 , and mixtures thereof.7. The fibrous structure according to wherein the fibrous structure comprises a coform fibrous structure.8. The fibrous structure according to wherein at least one of the fibers is a pulp fiber.9. The fibrous structure according to wherein the fibrous structure further exhibits a Bending Modulus of less than 10.00 as measured according to the Flexural Rigidity and Bending Modulus Test Method.10. The fibrous structure according to wherein the fibrous structure further exhibits a TS7 of less than 17.0 as measured according to the Emtec Test Method.11. A fibrous structure comprising a plurality of fibers wherein the fibrous structure exhibits an HFS of greater than 17.0 g/g as measured according to the Horizontal Full Sheet (HFS) Test Method and a Wet Web-Web CoF of greater than 1.85 as measured according ...

Fibrous Structure-Containing Articles

Articles, such as sanitary tissue products, including fibrous structures, and more particularly articles including fibrous structures having a plurality of fibrous elements wherein the article exhibits differential cellulose content throughout the thickness of the article and methods for making same are provided.

MULTIFUNCTIONAL SPINNING DEVICE

The invention discloses a multifunctional spinning device, comprising a solution storage apparatus, a solution spraying apparatus, a solution delivery apparatus, a drive apparatus, a high-voltage power supply apparatus, and a fiber collecting apparatus. The device not only realizes production of micron and nano fibers with multiple structures or a mixture thereof on one device, but also greatly improves the production yield thereof, tremendously reduces a voltage value of the required high-voltage electrostatic field, even does not require involvement of the high-voltage electrostatic field, reduces costs, and improves production safety. 1. A multifunctional spinning device , comprising:a solution storage apparatus used for storing spinning solutions, wherein space for solution storage in the solution storage apparatus is formed by several drums arranged in a coaxial nesting manner and a sealing plate; the several drums include at least an inner drum and an outer drum;the outer drum sleeves the peripheral part of the inner drum, and the bottom of the inner drum and the bottom of the outer drum are fixedly connected with an upper surface of the sealing plate, respectively; the inner drum and the sealing plate form an inner solution storage chamber;the inner drum, the outer drum and the sealing plate form an outer solution storage chamber;{'b': '1', 'vertical central axes of the outer drum and the inner drum both are located in a same straight line L;'}a solution delivery apparatus that communicates with the solution storage apparatus and is used for delivering the spinning solutions to the solution storage apparatus;a solution spraying apparatus that is connected to the solution storage apparatus and used for spraying the spinning solutions, and comprises several spray passage opening groups, discharge orifice groups as many as the spray passage opening groups, and spray passage pipe groups as many as the discharge orifice groups, wherein each spray passage opening ...

SYNTHETIC FILL MATERIALS HAVING COMPOSITE FIBER STRUCTURES

In some embodiments, the inventive subject matter relates to a fiber construct suitable for use as a fill material for insulation or padding, comprising: a primary fiber structure comprising a predetermined length of fiber; a secondary fiber structure, the secondary fiber structure comprising a plurality of relatively short loops spaced along a length of the primary fiber. In some embodiments, the inventive subject matter relates to insulative fiber structures that mimic the structure and scale of natural down and thereby provide similar properties. 1. A system for making a fiber construct , comprising:a first ejector coupled to a supply source for holding a flowable, fiber forming material for a primary fiber or secondary fiber;the first ejector being movable in a predetermined pattern relative to a second ejector for the other of primary fiber or secondary fiber so as to be capable of creating a composite fiber structure of the primary fiber and secondary fiber, and wherein in the predetermined pattern, the secondary fiber is disposed on the primary fiber in the plurality of loops; anda segmentation apparatus capable of segmenting the composite fiber into smaller units of fiber constructs wherein the average length of the segmented primary fiber is between 0.1 mm to 5 cm.2. The system of claim 1 , wherein the average length of the segmented primary fiber is between 5 mm to 70 mm.3. The system of claim 1 , wherein each loop of the plurality of loops consists of a single monofilament fiber and has a pair of spaced apart intersection points with the primary fiber claim 1 , wherein each of the intersection points of the primary fiber and the single monofilament fiber is spaced apart along a length of the primary fiber from the other intersection points of the primary fiber and the single monofilament fiber.4. The system of claim 3 , further comprising rollers configured to couple the primary fiber and the secondary fiber together at the intersection points by at least ...

FIBROUS CONSTRUCTS WITH THERAPEUTIC MATERIAL PARTICLES

Sheets of material used in medical devices and filters are disclosed. The sheets may include a fibrous mat including a plurality of microfibers. The microfibers may include a polymer matrix and a plurality of additive particles. The additive particles may include carbon material particles, therapeutic micro particles, and any combination thereof. Medical devices and filters that use the sheets are disclosed. Methods of producing the sheets are also disclosed. 1. A fibrous sheet , comprising:a mat of fibers, wherein the fibers comprise a polymer matrix and a plurality of therapeutic micro or nano particles.2. The fibrous sheet of claim 1 , wherein the particles comprise a plurality of carbon material particles.3. The fibrous sheet of claim 1 , wherein the fibers are formed by an extrusion process.4. The fibrous sheet of claim 3 , wherein the extrusion process includes any one of rotational spinning claim 3 , electrospinning claim 3 , and pressure extrusion and stretching.5. (canceled)6. The fibrous sheet of claim 2 , wherein the carbon material particles comprise any one of graphene nanosheets claim 2 , graphene quantum dots claim 2 , graphene nanoribbons claim 2 , graphene nanoparticles claim 2 , graphene oxide claim 2 , pyrolytic carbon claim 2 , carbon nanofibers claim 2 , carbon nanotubes claim 2 , fullerenes claim 2 , and any combination thereof.7. The fibrous sheet of claim 2 , wherein each one of the plurality of carbon material particles is sized to pass through an orifice having a diameter of less than 0.159 mm.8. (canceled)9. The fibrous sheet of claim 2 , wherein the carbon material particles are dispersed adjacent a surface of the fibers.10. (canceled)11. The fibrous sheet of claim 1 , wherein the therapeutic micro or nano particles comprise any one of elemental metal claim 1 , metal oxide claim 1 , metal colloidal claim 1 , pyrolytic carbon claim 1 , poly paraphenylene terephthalamide claim 1 , polyamid claim 1 , potassium ferrate claim 1 , and calcium ...

Use of Microfibers and/or Nanofibers in Apparel and Footwear

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers for the production of clothing items and footwear. Also described herein is a microfiber and/or nanofiber coating system having a support that holds an object to be coated by fibers during the coating process. The support may move the object with respect to the fibers, such that at least a portion of each of the exterior surfaces of the object are coated by the fibers formed by the microfiber and/or nanofiber coating system. 1. A microfiber and/or nanofiber coating system comprising:a fiber producing device comprising a body, the body comprising a plurality of openings, wherein the body is configured to receive material to be produced into a fiber;a driver, coupled to the body, the driver capable of rotating the body;a deposition system that directs fibers produced by the fiber producing device toward an object disposed below the fiber producing device during use; and a support for an object to be coated during use, wherein the support allows motion of the object with respect to the fibers produced by the deposition system such that at least a portion of at least one of the exterior surfaces of the object can be positioned in fibers produced by the fiber producing device and directed by the deposition system; wherein, during use, rotation of the body causes material in the body to be ejected through one or more openings to produce microfibers and/or nanofibers that are at least partially transferred to the object using the deposition system and the support.2. The system of claim 1 , wherein the support comprises a support bracket and a motor coupled to the support bracket claim 1 , wherein the motor is remotely operable claim 1 , and wherein the motor moves the support bracket to alter the exterior surface of the object which is coated by the produced fibers.3. The system of claim 1 , wherein the support comprises a support bracket claim 1 , a tilt motor coupled to ...

CARBON NANOTUBE FIBERS/FILAMENTS FORMULATED FROM METAL NANOPARTICLE CATALYST AND CARBON SOURCE

Disclosed is a method of: providing a mixture of a polymer or a resin and a transition metal compound, producing a fiber from the mixture, and heating the fiber under conditions effective to form a carbon nanotube-containing carbonaceous fiber. The polymer or resin is an aromatic polymer or a precursor thereof and the mixture is a neat mixture or is combined with a solvent. Also disclosed are a carbonaceous fiber or carbonaceous nanofiber sheet having at least 15 wt. % carbon nanotubes, a fiber or nanofiber sheet having the a polymer or a resin and the transition metal compound, and a fiber or nanofiber sheet having an aromatic polymer and metal nanoparticles. 1. A carbon nanotube-containing fiber made by a method comprising:providing a polymer or resin that is an aromatic polymer or a precursor thereof;providing an amount of a transition metal compound;dissolving the polymer or resin and the amount of the transition metal compound in a solvent to produce a solution; 'wherein the fiber is formed using a spinneret or by electrospinning; and', 'producing a fiber from the solution;'}heating the fiber under conditions effective to form the carbon nanotube-containing fiber.2. The carbon nanotube-containing fiber of claim 1 , wherein the solvent is a polar aprotic solvent.3. The carbon nanotube-containing fiber of claim 1 , wherein the carbon nanotubes are formed by heating the fiber in an inert atmosphere to a temperature of 600-2700° C.4. The carbon nanotube-containing fiber of claim 1 , wherein the method further comprises:heating the fiber under conditions effective to convert the precursor to the aromatic polymer before heating to form the carbon nanotube-containing fiber.5. The carbon nanotube-containing fiber of claim 4 , wherein the precursor is polyacrylonitrile.6. The carbon nanotube-containing fiber of claim 4 , wherein the resin is a coal pitch polymer claim 4 , a petroleum pitch polymer claim 4 , or a pitch resin polymer.7. The carbon nanotube-containing ...

SYSTEMS AND METHODS FOR THE PRODUCTION OF MICROFIBERS AND NANOFIBERS USING A FLUID LEVEL SENSOR

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. Described herein are fiber producing devices that have various types of outlet elements coupled to the fiber producing device. 1608-. (canceled)609. A microfiber and/or nanofiber producing system comprising:a fiber producing device comprising a body, the body comprising a plurality of openings and a coupling member, wherein the body is configured to receive material to be produced into a fiber;a driver capable of rotating the body, wherein the body is couplable to the driver through the coupling member; anda fluid level sensor coupled to the fiber producing device, the fluid level sensor being positioned to detect a level of fluid inside the fiber producing device,wherein, during use, rotation of the body coupled to the driver causes material in the body to be ejected through one or more openings to produce microfibers and/or nanofibers that are at least partially collected on the collection system.610. The system of claim 609 , wherein the fluid level sensor is an optical level sensor optically coupled to the fiber producing device.611. The system of claim 610 , wherein the optical level sensor is external to the fiber producing device.612. The system of claim 609 , wherein the fluid level sensor is a laser level sensor.613. The system of claim 609 , wherein the fluid level sensor is an ultrasonic level sensor.614. The system of claim 609 , further comprising one or more outlet elements coupled to one or more of the openings claim 609 , wherein the one or more outlet elements comprise an outlet orifice.615. The system of claim 614 , wherein the outlet elements are removably couplable to the body.616619-. (canceled)620. The system of claim 609 , wherein the body comprises one or more sidewalls and a top claim 609 ...

APPARATUSES HAVING OUTLET ELEMENTS AND METHODS FOR THE PRODUCTION OF MICROFIBERS AND NANOFIBERS

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. Described herein are fiber producing devices that have various types of outlet elements coupled to the fiber producing device. 11114-. (canceled)1115. A microfiber and/or nanofiber producing system comprising:two or more fiber producing devices, each fiber producing device comprising a body, the body comprising one or more openings and a coupling member, wherein the body is configured to receive material to be produced into a fiber; andone or more drivers capable of rotating one or more bodies, wherein one or more bodies are couplable to the driver through the coupling member, and wherein the one or more drivers are positioned above the one or more fiber producing devices, when one or more fiber producing devices are coupled to the one or more drivers;wherein, during use, rotation of the body of one or more fiber producing devices coupled to one or more drivers causes material in the body to be ejected through one or more openings to produce microfibers and/or nanofibers.1116. The system of claim 1115 , wherein the coupling member of the body of one or more fiber producing devices comprises an elongated member claim 1115 , and wherein one or more drivers comprise a coupling element that couples the elongated coupling member to the driver claim 1115 , and wherein the elongated coupling member is adjustably positionable in the coupling element such that the distance between the fiber producing device and the driver is alterable.1117. The system of claim 1115 , further comprising one or more outlet elements coupled to one or more of the openings.1118. The system of claim 1117 , wherein the outlet elements are removably couplable to the body.11191122-. (canceled)1123. The system of claim 1115 , wherein the body of one ...

NANO-FIBER SPINNING APPARATUS USING CENTRIFUGAL FORCE AND METHOD OF MANUFACTURING NANO-FIBER USING THE SAME

Disclosed is a nano-fiber spinning apparatus using centrifugal force which includes: (i) a top plate which has nano-fiber spinning holes h, and is slantly formed at an inclination angle α with a virtual horizontal line connecting top of a side wall in a disk shape; (ii) a bottom plate having a curved surface which is concaved and inclined upwardly in a dish shape; and (iii) the cylindrical side wall connecting the top plate and the bottom plate , so as to be wholly formed in a spin-top shape. Also, disclosed is a method of manufacturing nano-fibers which includes, after supplying a spinning dope to the above nano-fiber spinning apparatus , spinning nano-fibers with centrifugal force toward a collector provided above the apparatus while generating an air flow toward the collector by an air generator provided below the nano-fiber spinning apparatus 1. A nano-fiber spinning apparatus using centrifugal force , comprising:(i) a top plate which has nano-fiber spinning holes, and is slantly formed at an inclination angle decreasing from outer peripheral edges to a center with respect to a virtual horizontal line connecting the outer peripheral edges of a cylindrical side wall so as to have a disk shape;(ii) a bottom plate having a curved surface which is concaved and inclined upwardly so as to have a dish shape; and(iii) the cylindrical side wall which connects the top plate and the bottom plate, so as to be wholly formed in a spin-top shape.26b.. The apparatus according to claim 1 , wherein the bottom plate and the side wall are integrally formed claim 1 , and the top plate is separately prepared then coupled to the outer peripheral edges of the side wall3. The apparatus according to claim 1 , wherein the inclination angle between the top plate and the virtual horizontal line connecting the outer peripheral edges of the side wall ranges from 1 to 70°.4. The apparatus according to claim 1 , whereat an inclination angle between the curved surface forming the bottom plate ...

PROCESS AND PRODUCT OF HIGH STRENGTH UHMW PE FIBERS

An improved process for solution spinning of ultra-high molecular weight polyethylene (UHMW PE) filaments, wherein the 10 wt % solution of the UHMW PE in mineral oil at 250° C. has a Cogswell extensional viscosity and a shear viscosity within select ranges. 120-. (canceled)21. A solid ultra-high molecular weight polyethylene (UHMW PE) filament produced by a process comprising the steps of: {'br': None, 'sup': '0.8', 'λ≧5,917(IV);'}, 'a) selecting an UHMW PE having an intrinsic viscosity (IV) from about 5 dl/g to about 45 dl/g when measured in decalin at 135° C., wherein a 10 wt. % solution of the UHMW PE in mineral oil at 250° C. has a Cogswell extensional viscosity (λ) in accordance with the following formulab) dissolving the UHMW PE in a solvent at elevated temperature to form a solution having a concentration of from about 5 wt. % to about 50 wt. % of UHMW PE;c) discharging the solution through a spinneret to form solution filaments;d) cooling the solution filaments to form gel filaments;e) removing solvent from the gel filaments to form solid filaments containing less than about 5 wt. % of solvent;f) stretching at least one of the solution filaments, the gel filaments and the solid filaments to a combined stretch ratio of at least 10:1, wherein the solid filaments are stretched to a ratio of at least 2:1. stretch ratio of at least 10:1, wherein at least 2:1 is of the solid filaments.22. The solid ultra-high molecular weight polyethylene filament of claim 21 , wherein the 10 wt. % solution of the UHMW PE in mineral oil at a temperature of 250° C. has an Cogswell extensional viscosity at least 65 claim 21 ,000 Pa-s.23. The solid ultra-high molecular weight polyethylene filament of claim 21 , wherein the 10 wt. % solution of the UHMW PE in mineral oil at a temperature of 250° C. has a Cogswell extensional viscosity (λ) in accordance with the following formula:{'br': None, 'sup': '0.8', 'λ≧7,282(IV).'}24. The solid ultra-high molecular weight polyethylene filament ...

FORCESPINNING OF FIBERS AND FILAMENTS

Among other things, the inventive subject matter generally relates to systems and methods for collecting fibers of any scale in agglomerations of generally parallel strands for use in forming yarns, for example. 1. A method of producing a waterproof/breathable membrane , comprising:forcing a fluid, fiber-forming material through at least one outlet port disposed in an apparatus configured to expel a jet of the material, the apparatus configured to provide a jet that is fine enough to solidify on a collector as a superfine fiber, the primary expulsion force of the jet being other than an applied electrical field; andexpelling the material until a web of superfine fibers is formed on the collector;working the web to a density and porosity sufficient to provide waterproofness and breathability to a selected standard.2. The method of wherein the web comprises nanoscale fibers that are worked to a thickness of at least about 7 micrometers.3. The method of wherein the web has an average pore size of at least 250 nm.4. The method of wherein the thickness of the web is between about 7 to about 50 micrometers.5. The method of wherein the average pore size is between about 250 to about 1500 nm.6. The method of wherein the average pore size is between about 250 to about 1500 nm and the web thickness is between about 7 to about 50 micrometers.7. The method of any of the claims wherein the average fiber diameter is less than 1000 nm.8. The method of any of the claims wherein the average fiber diameter is less than 1000 nm.9. The method of any of the claims wherein the average fiber diameter is less than 500 nm.10. The method of any of the claims wherein the average fiber diameter is less than 100 nm.11. The method of any of the foregoing claims wherein the average fiber diameter is less than 50 nm.12. The method of any of the claims wherein the average fiber has an aspect ratio of at least 100.13. The method of any of the claims wherein the fiber-forming material comprises PTFE ...

POLYMERIC NANOFIBERS AND NANOFIBROUS WEB

The present invention is directed toward an apparatus comprising a high speed rotating disk or bowl for nanofiber spinning from the rotational sheared thin film fibrillation at the enclosed serrations with the optimized stretching zone to produce the defects-free nanofibrous web and nanofibrous membrane comprising a nanofiber network with a number average nanofiber diameter less than 500 nm that yield the crystallinity higher than the polymer resin used in making the web. 1. (canceled)3. A nanofibrous web produced from the polymeric nanofibers of claim 2 , wherein the nanofibrous web has:(a) less than about 5% Mw reduction of the nanofibrous web as compared to the polymer used for making the nanofibrous web;(b) essentially the same thermal weight loss as compared to the polymer used for making the nanofibrous web as measured by TGA;(c) higher crystallinity of the nanofibrous web as compared to the polymer used for making the nanofibrous web; and(d) average web strength of at least about 2.5 N/cm. This invention relates to an improved centrifugal nanofiber spinning apparatus for producing the defects-free nanofibrous web and nanofibrous membrane comprising a nanofiber network with a number average nanofiber diameter less than 1000 nm.Polymer nanofibers can be produced from solution-based electrospinning or electroblowing, however, they have very high processing cost, limited throughputs and low productivity. Melt blowing nanofiber processes that randomly lay down fibers do not provide adequate uniformity at sufficiently high throughputs for most end use applications. The resulting nanofibers are often laid on substrate layer of coarse fiber nonwoven or microfiber nonwoven to construct multiple layers. A problem with melt-blown nanofibers or small microfibers, exposed on the top of the web, they are very fragile and easily crushed by normal handling or contact with some object. Also, the multilayer nature of such webs increases their thickness and weight, and also ...

HANDHELD/PORTABLE APPARATUS FOR THE PRODUCTION OF MICROFIBERS, SUBMICRON FIBERS AND NANOFIBERS

Described herein are portable apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Portable apparatuses that may be used to create fibers are described. 1. A handheld/portable device for use in forming microfibers and/or nanofibers comprising:a housing;one or more motors disposed in the housing,a ring-shaped spinneret, disposed in the housing and coupled to one or more of the motors;wherein, during use, rotation of the spinneret causes material placed in the body of the spinneret to travel circumferentially and upwards and ejected through one or more of the openings to produce fibers, andone or more fans incorporated into the spinneret, wherein the one or more fans are configured to produce a pressure differential in the flow of air through the housing such that the fibers are drawn to the center of the flow of air and away from a wall of the housing.2. The device of claim 1 , wherein the housing comprises a handle.3. The device of claim 1 , wherein the housing comprises a tapered outlet claim 1 , and wherein fibers produced by the spinneret are blown away from the spinneret into the tapered outlet.4. The device of claim 1 , wherein the motor and the spinneret are aligned along an axial axis of the housing.5. The device of claim 1 , wherein the spinneret comprises a toroidal shape with an air foil cross-section to allow air to flow through the center of the spinneret.6. The device of claim 1 , wherein the motor is capable of rotating the spinneret at speeds of greater than about 500 rpm.7. The device of claim 1 , wherein the spinneret is removably coupled to at least one motor through a coupling member.8. The device of claim 1 , wherein the fibers produced by the spinneret comprise microfibers.9. The device of claim 1 , wherein the fibers produced by the spinneret comprise nanofibers.10. The device of claim 1 , further comprising a battery coupled to ...

SYNTHETIC FILL MATERIALS HAVING COMPOSITE FIBER STRUCTURES

In some embodiments, the inventive subject matter relates to a fiber construct suitable for use as a fill material for insulation or padding, comprising: a primary fiber structure comprising a predetermined length of fiber; a secondary fiber structure, the secondary fiber structure comprising a plurality of relatively short loops spaced along a length of the primary fiber. In some embodiments, the inventive subject matter relates to insulative fiber structures that mimic the structure and scale of natural down and thereby provide similar properties 1. A bulk fill material , comprising a plurality of fiber constructs having sufficient loft and recovery so as to be suitable for padding and/or insulating applications , each construct comprising:a primary fiber structure comprising a predetermined length of fiber; anda secondary fiber structure, the secondary fiber structure comprising a plurality of loops spaced along a length of the primary fiber, the primary fiber structure and the secondary fiber structure being coupled together by bonding of materials, free of mechanical fasteners.2. The bulk fill material of wherein the primary fiber has a length of 0.1 mm to 5 cm claim 1 , or thereabout.3. The bulk fill material of wherein the primary fiber length is between 5 mm to 70 mm claim 2 , or thereabout.4. The bulk fill material of wherein the primary fiber has more than 20 loops.5. The bulk fill material of wherein the secondary fiber intersection points with the primary fiber are spaced from 10 μm to 150 μm apart claim 4 , or thereabout.6. The bulk fill material of wherein the secondary fiber loops have a maxima of 5 mm or less.7. The bulk fill material of wherein the secondary fiber loops have a maxima of between 100 μm to 1 mm claim 4 , or thereabout.8. The bulk fill material of wherein the secondary fiber loops have a maxima of between 300 μm-1000 μm claim 4 , or thereabout.9. (canceled)10. (canceled)11. The bulk fill material of wherein the primary fiber has a ...

Method of preparing carbon fibers

A method of producing carbon fiber, yarns, and nonwoven carbon fiber cloths, includes forming suitable polymeric precursor microfibers and/or nanofibers using a centrifugal spinning process and decomposing at least a portion of the polymeric precursor fibers to form carbon fibers. The decomposition may be accomplished by treating the polymeric precursor fibers with acid vapor from an aqueous acid solution at a temperature of less than 250° C.

SCALABLE AND FACILE IN SITU SYNTHESIS OF NANOPARTICLES RESULTING IN DECORATED MULTIFUNCTIONAL FIBERS

Described herein is a method of in situ production of supported nanoparticles using centrifugal spinning to provide a composite fiber structure of polymer or carbon fibers having nanoparticles disposed on the surface. The nanoparticles may be salt particles or elemental metal particles. 1. A method of in situ production of supported nanoparticles , comprising:placing a fiber producing composition comprising a polymer and a salt dissolved and/or suspended in a solvent into a body of a fiber producing device, the body comprising one or more openings;rotating the fiber producing device, wherein rotation of the fiber producing device causes the fiber producing composition in the body to be passed through one or more openings to produce polymer microfibers and/or polymer nanofibers comprising the salt;heating at least a portion of the produced polymeric microfibers and/or polymeric nanofibers to a temperature sufficient to convert at least a portion of the salt into nanoparticles.2. The method of claim 1 , wherein the fibers are created without subjecting the fibers claim 1 , during their creation claim 1 , to an externally applied electric field.3. The method of claim 1 , wherein the polymer is a hydrophilic polymer.4. The method of claim 1 , wherein the polymer is a hydrophobic polymer.5. The method of claim 1 , wherein the polymer is polyvinylpyrrolidone.6. The method of claim 1 , wherein the salt is an alkali metal salt or an alkaline earth metal salt.7. The method of claim 1 , wherein the salt is a transition metal salt.8. The method of claim 1 , wherein the solvent is a protic solvent.9. The method of claim 1 , wherein the produced microfibers and/or nanofibers are heated to a temperature between about 200° C. and about 500° C.10. The method of claim 8 , wherein the produced microfibers and/or nanofibers are heated for a time sufficient to produce nanoparticles of the salt on the fibers.11. The method of claim 1 , wherein the produced microfibers and/or nanofibers ...

ENGINEERED POLYMERIC VALVES, TUBULAR STRUCTURES, AND SHEETS AND USES THEREOF

The present invention provides engineered valves, tubular structures, and sheets comprising oriented polymeric fibers, e.g., nanofibers, methods of fabricating such structures, and methods of use of such structures as, for example, patches, grafts and valves, e.g., cardiac valves. 1. An engineered valve comprising:a tubular wall comprising micron, submicron or nanometer dimension polymer fibers defining a shape of the tubular wall, the tubular wall having an inner surface, an upstream first portion, and a downstream second portion; andone or more leaflets extending from, and integral with, the inner surface of the tubular wall between the upstream first portion and the downstream second portion of the tubular wall, with the downstream second portion of the tubular wall extending beyond the one or more leaflets, the one or more leaflets each comprising micron, submicron or nanometer dimension polymer fibers defining the shape of the corresponding leaflet and interpenetrating with at least some of the micron, submicron or nanometer dimension polymer fibers forming a part of the upstream first portion of the tubular wall, the one or more leaflets configured for one way fluid flow through the upstream first portion of the tubular wall, past the one or more leaflets, and into the downstream second portion of the tubular wall, the downstream portion of the tubular wall including all of the tubular wall downstream of the one or more leaflets;wherein the micron, submicron or nanometer dimension polymer fibers of the tubular wall and the micron, submicron or nanometer dimension polymer fibers of each leaflet form a polymeric fiber scaffold for cellular ingrowth into the tubular wall and into the one or more leaflets.2. The engineered valve of claim 1 , wherein the leaflets are also integral with the outer surface of the tubular wall.3. The engineered valve of claim 1 , wherein the tubular wall further comprises a stent embedded in the micron claim 1 , submicron or nanometer ...

APPARATUS AND PROCESS FOR UNIFORM DEPOSITION OF POLYMERIC NANOFIBERS ON SUBSTRATE

The present invention relates to an apparatus for the mass production of polymeric nanofibres and their uniform deposition over any substrate. The present invention also provides a method for the manufacture of droplet free polymeric nanofibres by electrospinning process using multi-hole spinnerets. The droplet free polymeric nanofibres of the present invention are preferably of a diameter in the range of 50 nm to 850 nm. 1. An electrospinning apparatus for mass production of nanofibers and for uniform deposition of nanofibers on substrate comprising:a plurality of multinozzle spinnerets, each spinneret having two or more rows of nozzles, the each row having two ends and a middle portion, each row having a plurality of nozzles;each of the spinnerets being mounted on a frame, each spinneret being configured to be moved in longitudinal direction;at least one reservoir for storing the polymeric solution, at least one of the spinnerets being in fluid communication with the reservoir for delivering the polymer solution to the nozzles, each of the nozzle being provided with needles in the nozzle outlet opening;a pressure regulating device to control flow rate of polymer through the nozzles;a collector for collecting nanofibers on a substrate which is movably disposed on the charged collector;{'b': '10', 'an arrangement for linear movement of substrate () in the space between needles outlet ends and the collector;'}a dual pole power supply for charging the needles and the collector, the needles outlet ends and the collector having opposite polarity; the nozzle/needle at each of two ends of the rows is electrically charged but no polymer solution is delivered to said nozzle,', 'the needles are arranged on the spinnerete such that each needle from two diagonally opposite sides in a row of needles exerts equal repulsive forces and the needles from the remaining two diagonally opposite sides exert weaker repulsive forces, the distance between adjacent needles in a row of ...

HIGH TEMPERATURE MELT INTEGRITY BATTERY SEPARATORS VIA SPINNING

A method for preparing a high temperature melt integrity separator, the method comprising spinning a polymer by one or more of a mechanical spinning process and an electro-spinning process to produce fine fibers. 1. A web comprising fine fibers , wherein:the fine fibers have an individual average diameter of about 10 nm to about 50 μm; and has a thickness of about 10 μm to about 200 μm; and', 'has a MacMullin number equal to or lower than 10., 'the web2. The web of claim 1 , wherein the web:has a thickness of less than or equal to 63 μm;has an apparent porosity of greater than or equal to 67; andhas a MacMullin number equal to or lower than 6.3. The web of claim 2 , wherein the web:has a thickness of less than or equal to 44 μm; andhas an apparent porosity of greater than or equal to 73; andhas a MacMullin number equal to or lower than 4.4. The web of claim 3 , wherein the web has a MacMullin number equal to or lower than 3.5. The web of claim 4 , wherein the web has an apparent porosity of greater than or equal to 75.6. The web of claim 1 , wherein the web has an average pore size in the range of about 0.01 μm to about 20 μm.7. The web of claim 1 , wherein the web has an electrolyte contact angle of equal to or lower than about 30° in 1:1:1 EC:DMC:EMC and 1 mol/L LiPF.8. The web of claim 1 , wherein the fine fibers comprise a polyetherimide.9. The web of claim 1 , wherein the polyetherimide comprises structural units based on para-phenylene diamines.10. The web of claim 1 , wherein the fine fibers comprise one or more of polyetherimide claim 1 , poly(amic acid) claim 1 , aromatic polyamide claim 1 , poly(amide-imide) claim 1 , and polyphenylene oxide.11. The web of claim 1 , wherein the fine fibers comprise a thermoplastic polymer having a glass transition temperature higher than about 180° C.12. The web of claim 1 , wherein the fine fibers comprise poly(4-methylpentene) claim 1 , poly(amide-imide) claim 1 , polyoxymethylene claim 1 , polyphthalamide claim 1 , ...

PROCESS FOR MAKING HIGH-PERFORMANCE POLYETHYLENE MULTIFILAMENT YARN

Processes for making high-performance polyethylene multi-filament yarn are disclosed which include the steps of a) making a solution of ultra-high molar mass polyethylene in a solvent; b) spinning of the solution through a spinplate containing at least 5 spinholes into an air-gap to form fluid filaments, while applying a draw ratio DR; c) cooling the fluid filaments to form solvent-containing gel filaments; d) removing at least partly the solvent from the filaments; and e) drawing the filaments in at least one step before, during and/or after said solvent removing, while applying a draw ratio DRof at least 4, wherein in step b) each spinhole comprises a contraction zone of specific dimension and a downstream zone of diameter Dn and length Dn with Ln/Dn of from 0 to at most 25, to result in a draw ratio DR=DR*DRof at least 150, wherein DRis the draw ratio in the spinholes and DRis the draw ratio in the air-gap, with DRbeing greater than 1 and DRat least 1. High-performance polyethylene multifilament yarn, and semi-finished or end-use products containing said yarn, especially to ropes and ballistic-resistant composites, are also disclosed. 1. A ballistic-resistant sheet comprising:a first layer and a second layer each comprising high-performance polyethylene multifilament yarn; wherein{'sup': −0.065', '−0.065, 'the multifilament yarn comprises ultra-high molecular weight polyethylene having an intrinsic viscosity of from about 8 dl/g to about 40 dl/g as measured in decalin at 135° C. and at least 5 filaments, and has a tensile strength of between 5.8·(n) GPa and 8·n) GPa, wherein n is the number of filaments in the yarn; and wherein'}the filaments of the multifilament yarn in the first layer and the second layer are spread unidirectionally within each of the layers; and whereina direction of the filaments in the first layer is rotated with respect to a direction of the filaments in the second layer.2. The ballistic-resistant sheet of claim 1 , wherein the yarn has a ...

Process for making high-performance polyethylene multifilament yarn

Processes for making high-performance polyethylene multi-filament yarn are disclosed which include the steps of a) making a solution of ultra-high molar mass polyethylene in a solvent; b) spinning of the solution through a spinplate containing at least 5 spinholes into an air-gap to form fluid filaments, while applying a draw ratio DRfluid; c) cooling the fluid filaments to form solvent-containing gel filaments; d) removing at least partly the solvent from the filaments; and e) drawing the filaments in at least one step before, during and/or after said solvent removing, while applying a draw ratio DRsolid of at least 4, wherein in step b) each spinhole comprises a contraction zone of specific dimension and a downstream zone of diameter Dn and length Dn with Ln/Dn of from 0 to at most 25, to result in a draw ratio DRfluid=DRsp*DRag of at least 150, wherein DRsp is the draw ratio in the spinholes and DRag is the draw ratio in the air-gap, with DRsp being greater than 1 and DRag at least 1. High-performance polyethylene multifilament yarn, and semi-finished or end-use products containing said yarn, especially to ropes and ballistic-resistant composites, are also disclosed.

PROCESS FOR MAKING HIGH-PERFORMANCE POLYETHYLENE MULTIFILAMENT YARN

Processes for making high-performance polyethylene multi-filament yarn are disclosed which include the steps of a) making a solution of ultra-high molar mass polyethylene in a solvent; b) spinning of the solution through a spinplate containing at least 5 spinholes into an air-gap to form fluid filaments, while applying a draw ratio DR; c) cooling the fluid filaments to form solvent-containing gel filaments; d) removing at least partly the solvent from the filaments; and e) drawing the filaments in at least one step before, during and/or after said solvent removing, while applying a draw ratio DRof at least 4, wherein in step b) each spinhole comprises a contraction zone of specific dimension and a downstream zone of diameter Dn and length Dn with Ln/Dn of from 0 to at most 25, to result in a draw ratio DR=DR*DRof at least 150, wherein DRis the draw ratio in the spinholes and DRis the draw ratio in the air-gap, with DRbeing greater than 1 and DRat least 1. High-performance polyethylene multifilament yarn, and semi-finished or end-use products containing said yarn, especially to ropes and ballistic-resistant composites, are also disclosed. 1. A ballistic resistant assembly comprising a plurality of preformed sheets , each preformed sheet comprising 4 layers of filaments from multifilament polyethylene yarn , the polyethylene having an IV of between 8 and 40 dL/g as measured on decalin solutions at 135° C. , the plurality of preformed sheets having an areal density of at least 1.5 kg/mand at most 4.3 kg/m , wherein the plurality of preformed sheets has a specific energy absorption of between 280 and 479 J·kg/mas measured against a 9*19 mm FMJ Parabellum FMJ bullet based on Stanag 2920.2. The ballistic resistant assembly according to claim 1 , wherein the plurality of preformed sheets has a specific energy absorption of between 280 and 391 J·kg/m.3. The ballistic resistant assembly according to claim 1 , wherein the plurality of preformed sheets has a specific energy ...

MULTI-COMPONENT ROTARY SPINNER APPARATUSES, SYSTEMS AND METHODS FOR PRODUCING FIBER FROM MOLTEN MATERIAL

Rotary spinner apparatuses, systems and methods for producing fibers from molten materials are disclosed. Certain exemplary embodiments include rotary spinners including a hub, a slinger, an annular member, a retaining member, and a plurality of fasteners. In certain embodiments the hub, the retaining member, and the plurality of fasteners are structured to limit axial movement of the annular member relative to the hub member and to allow radial expansion and contraction of the annular member relative to the hub member. In certain embodiments the annular member is structured to contact the hub at a plurality of contact areas and is spaced apart from the hub at a plurality of gap areas. In certain embodiments the slinger is structured to contact the hub at a plurality of contact areas and is spaced apart from the hub at a plurality of gap areas. 1. A rotary spinner apparatus for producing fibers from molten material comprising:a hub member extending radially outward relative to a central axis and being rotatable about the central axis;an annular member including a lower wall extending radially outward, a side wall extending axially upward from the lower wall, and an upper wall extending radially inward from the side wall, a first side of the lower wall contacting the hub member, a plurality of apertures being formed in the side wall;a retaining member facing a second side of the lower wall;a plurality of fasteners coupling the retaining member and the hub member, the retaining member, the hub member and the plurality of fasteners structured to limit axial movement of the annular member relative to the hub member and structured to allow radial expansion and contraction of the annular member relative to the hub member; anda slinger member positioned radially inward from the annular member and extending radially outward toward the annular member, the slinger member contacting the hub member.2. The apparatus of wherein the first side of the lower wall contacts the hub ...

Systems, devices and methods for fabrication of polymeric fibers

In accordance with an exemplary embodiment, a method is provided for forming a micron, submicron and/or nanometer dimension polymeric fiber. The method includes providing a stationary deposit of a polymer. The method also includes contacting a surface of the polymer to impart sufficient force in order to decouple a portion of the polymer from the contact and to fling the portion of the polymer away from the contact and from the deposit of the polymer, thereby forming a micron, submicron and/or nano-meter dimension polymeric fiber.

A DEVICE FOR PRODUCING FIBERS OR MICROFIBERS

A device for producing nanofibers or microfibers from solutions, emulsions, liquid suspensions or melts containing a spun substance, comprises a chamber in which a hollow shaft is assembled, on which at least one rotating disc with an output gap is mounted, The chamber is generally provided with a source of the flowing gas and a collection area. In an alternative embodiment, the chamber is provided with a number of side by side arranged hollow shafts. 1. A device for producing nanofibers or microfibers from solutions , emulsions , liquid suspensions or melts containing a spun substance , wherein it comprises a chamber in which a hollow shaft is assembled on which at least one rotating disk with an output gap is mounted.2. The device for producing nanofibers or microfibers as defined in claim 1 , wherein the chamber is provided with a source of the gas flow and a collection area.3. The device for producing nanofibers or microfibers as defined in claim 1 , wherein the chamber is provided with a number of side by side arranged hollow shafts on which rotating discs are mounted.4. The device for producing nanofibers or microfibers as defined in claim 1 , wherein that at least one hollow shaft is provided with at least two superimposed rotating discs.5. The device for producing nanofibers or microfibers as defined in claim 1 , wherein least one rotating disc is composed of two successive parts claim 1 , wherein between the upper part and the lower part an outlet gap is formed around the circumference thereof.6. The device for producing nanofibers or microfibers as defined in claim 5 , wherein the size of the outlet gap between the upper part and the lower part of the rotating disc is formed by a spacer element claim 5 , for example a spacer ring.7. The device for producing nanofibers or microfibers as defined in claim 1 , wherein at least one part of the rotating disc has a frustoconical shape.8. The device for producing nanofibers or microfibers as defined in claim 1 , ...

Fibrous Structure-Containing Articles

Articles, such as sanitary tissue products, including fibrous structures, and more particularly articles including fibrous structures having a plurality of fibrous elements wherein the article exhibits differential cellulose content throughout the thickness of the article and methods for making same are provided. 1. A method for making an article , the method comprising the steps of:a. providing a first paper web;b. providing a second paper web;c. associating at least one meltblown fibrous structure with at least one of the first and second paper webs; andd. associating the first and second paper webs to form an article.2. The method according to wherein at least one of the first and second paper webs comprises a plurality of fibers.3. The method according to wherein at least one of the fibers comprises a pulp fiber.4. The method according to wherein the pulp fiber comprises wood pulp fiber.5. The method according to wherein the wood pulp fiber is selected from the group consisting of: northern softwood kraft pulp fibers claim 4 , southern softwood kraft pulp fibers claim 4 , northern hardwood pulp fibers claim 4 , tropical hardwood pulp fibers claim 4 , and mixtures thereof.6. The method according to wherein the pulp fiber comprises trichome fiber.7. The method according to wherein at least one of the first and second paper webs comprises a wet-laid fibrous structure.8. The method according to wherein at least one of the first and second paper webs comprises an air-laid fibrous structure.9. The method according to wherein at least one of the first and second paper webs comprises a carded fibrous structure.10. The method according to wherein at least one of the first and second paper webs comprises an absorbent gel material.11. The method according to wherein at least one of the first and second paper webs comprises a surface having a surface pattern.12. The method according to wherein the surface pattern comprises one or more relatively high density regions and one ...

GUSSETED ROTARY SPINNERS FOR PRODUCING FIBER FROM MOLTEN MATERIAL

Rotary spinner apparatuses, systems and methods for producing fibers from molten materials are disclosed. Certain exemplary embodiments include substantially net shape single pattern rotary spinner castings that include gussets extending radially inward from a side wall and axially upward form a lower wall to an upper wall. A dispenser may be structured to supply molten material in a downward direction through a hollow interior of the casting to the lower wall. A plenum may be structured to direct elevated temperature glass toward an exterior surface of the casting. 1. A centrifugal spinner apparatus for producing fibers from molten material comprising:a substantially net-shaped single-pattern casting including a base extending radially outward to a substantially circular periphery extending about a central axis line, a side wall extending about the circular periphery in an axially upward direction from the base, an upper flange extending radially inward from the side wall, and a plurality of gussets extending radially inward from the side wall and extending axially from the base to the upper flange;wherein the casting defines a plurality of pockets bounded by surfaces of the base, the side wall, the flange, and respective pairs of the plurality of gussets and opening inwardly to a central structural void, and a plurality of holes are formed through portions of the side wall bounding the plurality of pockets.2. The centrifugal spinner apparatus of further comprising a shaft extending along and rotatable about the central axis line claim 1 , the shaft being coupled with the base and extending from a side of the base opposite the central structural void.3. The centrifugal spinner apparatus of wherein the shaft is coupled with the base by first and second clamping members and wherein the first clamping member contacts the upper surface of the base.4. The centrifugal spinner apparatus of further comprising a dispenser structured to direct a stream of molten material in ...

Appartuses and methods for the delivery of material to a fiber producing device

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. Described herein are fiber producing devices that have various types of outlet elements coupled to the fiber producing device.

A CENTRIFUGAL SPINNING DEVICE USED FOR NANOFIBER/MICROFIBER PRODUCTION

The present invention relates to a centrifugal spinning device, which is suitable for industrial production by being connected to high flow-rate polymer solution tanks or an extruder used for nonwoven nano/microfiber production, and which essentially comprises at least one rotary cylindrical spinneret through which the polymer material is injected for fabrication of nonwoven articles, at least two bearings located on both ends of the spinneret which enable it to be fixed on the system and rotate around a specific orbit, at least one motor connection member located on at least one end of the spinneret which provides the connection to the power supply that enables the rotational movement, at least one spinning die located inside the spinneret which enables the polymer materials to be homogenously distributed within the spinneret by means of its sectional area that is in the form of a half die.

FINE FIBER WEB WITH CHEMICALLY FUNCTIONAL SPECIES

A functionalized fine fiber is provided. In an embodiment, the functionalized fine fiber is usable in chromatography. The functionalized fine fiber includes a matrix of fine fiber. The fine fibers preferably have an average diameter of less than 2 micron, and each fine fiber preferably has a length of at least 1 millimeter. The fine fibers carry and immobilize functional molecules. 1. A functionalized fine fiber , usable in chromatography , comprising:a matrix of fine fiber, the fine fiber having an average diameter of less than 2 micron, each fine fiber having a length of at least 1 millimeter; andfunctional molecules carried and immobilized by the fine fiber.2. The functionalized fine fiber of claim 1 , wherein the functional molecules are ligands.3. The functionalized fine fiber of claim 2 , wherein the ligands are selected from the group consisting of antibodies specific to target proteins.4. The functionalized fine fiber of claim 1 , further wherein the fine fiber is formed of at least one polymer selected from the group consisting of polytetrafluoroethylene claim 1 , polyvinylidene fluoride claim 1 , other fluoropolymers claim 1 , polyamide claim 1 , polyester claim 1 , cellulose claim 1 , polysulfone claim 1 , polyethylene claim 1 , polypropylene claim 1 , polystyrene claim 1 , and poly(4-vinylpyridine).5. The functionalized fine fiber of claim 1 , wherein the functional molecules comprise at least one metal ion claim 1 , the metal of the at least one metal ion selected from the group consisting of: cobalt claim 1 , nickel claim 1 , copper claim 1 , iron claim 1 , zinc claim 1 , and gallium.6. The functionalized fine fiber of claim 1 , wherein the functional molecules are hydrophobic groups.7. The functionalized fine fiber of claim 6 , wherein the hydrophobic groups include one or more of a phenyl group claim 6 , an octyl group claim 6 , and a butyl group.8. The functionalized fine fiber of claim 1 , wherein the fine fiber is contained in a fibrous web ...

BULK FILL MATERIAL

Among other things, the inventive subject matter generally relates to bulk fill materials suitable for an insulative or cushioning material. The bulk fill material consists of a plurality of discrete units comprising clusters or loose webs of fibers. The fibers consist of superfine fibers and/or fibers in a range of 1 to 5 denier; the fibers being entangled to form the clusters or loose webs. In some embodiments the clusters or webs are multinode fiber structures that mimic natural down. The inventive subject matter is also directed to related methods of production. 113.-. (canceled)14. A bulk fill material suitable for use as an insulative or cushioning material in footwear , outdoor apparel , and/or outdoor equipment , the bulk fill material comprising:a plurality of discrete units comprising clusters or loose webs of fibers, the fibers comprising superfine fibers and/or fibers in a range of 1 to 5 denier; the fibers being entangled to form the clusters or loose webs.15. The bulk fill material of wherein the clusters or webs of fibers comprise a plurality of fibers claim 14 , the fibers each being a multinode fiber structure formed of fiber material formed into a unitary claim 14 , multinode fiber structure claim 14 , the multinode fiber structures being agglomerated as clusters or webs.16. The bulk fill material of wherein a combination of fiber types are included in the clusters or webs claim 14 , the fiber types being selected from one or more of the following fiber type variations: (1) variation in fiber material and/or (2) variation in fiber diameters or cross-sectional geometries.17. The bulk fill material of wherein the fibers in a cluster or web comprise superfine fibers.18. The bulk fill material of wherein the fibers in the clusters or webs comprise a blend of superfine fibers and fibers having of at least 1 denier.19. The bulk fill material of wherein the fill material has a fill power equivalent of 450 to 1 claim 14 ,000.20. The bulk fill material of ...

MECHANOLUMINESCENCE POLYMER DOPED FABRICS AND METHODS OF MAKING

Described herein is the application of centrifugal spinning to provide a flexible mechanoluminescent material composed of rare earth metal doped fibers. Rare earth metal doped fibers are formed, in one embodiment, by centrifugal spinning. 1. A method of producing mechanoluminescent fibers , comprising:placing a solution comprising a polymer and a rare earth complex into a body of a fiber producing device, the body comprising one or more openings;rotating the fiber producing device at a speed sufficient to cause the solution in the body to be passed through one or more openings to produce rare earth metal doped fibers;collecting at least a portion of the produced rare earth metal doped fibers.2. The method of claim 1 , wherein the rare earth metal doped fibers are created without subjecting the rare earth metal doped fibers claim 1 , during their creation claim 1 , to an externally applied electric field.3. The method of or claim 1 , wherein the polymer comprises polyvinyl-difluoride.4. The method of any one of - claim 1 , wherein rare earth metal is a cerium metal salt.5. The method of any one of - claim 1 , wherein the rare earth metal is a europium metal salt.6. The method of any one of - claim 1 , wherein the rare earth metal is a nitrate salt.7. The method of any one of - claim 1 , wherein the rare earth metal is a sulfate salt.8. The method of any one of - claim 1 , wherein the fibers are collected as a mat of the fibers.9. The method of any one of - claim 1 , wherein the fibers are collected by depositing the fibers onto a support.10. The method of any one of - claim 1 , wherein the rare earth metal doped fibers comprise microfibers.11. The method of any one of - claim 1 , wherein the rare earth metal doped fibers comprise nanofibers.12. A mechanoluminescent material comprising fibers formed by the method of any one of -.13. A mechanoluminescent material comprising rare earth metal doped woven and nonwoven fibers. This work was supported by National Science ...

METHOD FOR MANUFACTURING SUPER ABSORBENT POLYMER FIBER

This invention relates to a method of manufacturing a superabsorbent polymer fiber and a superabsorbent polymer fiber manufactured thereby. 1. A method of manufacturing a superabsorbent polymer fiber , comprising steps of:1) preparing a neutralization solution by dissolving a water-soluble ethylenic unsaturated monomer in a sodium hydroxide aqueous solution;2) preparing a spinning solution by adding the neutralization solution with a crosslinking agent and then performing stirring; and3) producing a superabsorbent polymer fiber by subjecting the spinning solution to centrifugal spinning using a spinneret and then performing drying,wherein the neutralization solution has a neutralization degree of 40 to 90 mol %.2. The method of claim 1 , wherein the neutralization solution has a neutralization degree of 50 to 80 mol %.3. The method of claim 1 , wherein the water-soluble ethylenic unsaturated monomer is at least one selected from the group consisting of anionic monomers and salts thereof claim 1 , including isobutylene claim 1 , acrylic acid claim 1 , polyacrylic acid claim 1 , methacrylic acid claim 1 , maleic anhydride claim 1 , fumaric acid claim 1 , crotonic acid claim 1 , itaconic acid claim 1 , 2-acryloyl ethanesulfonic acid claim 1 , 2-methacryloyl ethanesulfonic acid claim 1 , 2-(meth)acryloyl propanesulfonic acid claim 1 , and 2-(meth)acrylamide-2-methylpropanesulfonic acid; nonionic hydrophilic monomers claim 1 , including (meth)acrylamide claim 1 , N-substituted (meth)acrylate claim 1 , 2-hydroxyethyl(meth)acrylate claim 1 , 2-hydroxypropyl(meth)acrylate claim 1 , methylacrylate claim 1 , hydroxypropyl methacrylate claim 1 , methoxypolyethyleneglycol (meth)acrylate claim 1 , and polyethyleneglycol (meth)acrylate; and amino group-containing unsaturated monomers and quaternary salts thereof claim 1 , including (N claim 1 ,N)-dimethylaminoethyl (meth)acrylate and (N claim 1 ,N)-dimethylaminopropyl (meth)acrylamide.4. The method of claim 1 , wherein the water- ...

SPINNING DEVICE AND METHOD FOR SPINNING UP A SPINNING DEVICE, AND SPIN-UP DEVICE

The invention shows a spin-up device () and a method for spinning up a spinning device () for the continuous extrusion of molded bodies () from a spinning solution (), containing a solvent and cellulose dissolved in the solvent, wherein the molded bodies are extruded from the spinning solution () through spinnerets () of the spinning device () in the form of a loose spinning curtain (), the molded bodies () of the loose spinning curtain () are combined into a molded body bundle () after the extrusion, and the molded body bundle () is, in a further step, fed to a draw-off member () of the spinning device () in order to start a continuous extrusion of the molded bodies (). In order to make the spin-up method simpler in terms of process technology and more reproducible, it is proposed to increase the tensile strength of at least some areas of the molded bodies () of the loose spinning curtain () after their extrusion and before combining them into a molded body bundle (). 1. A method for spinning up a spinning device for the continuous extrusion of molded bodies from a spinning solution comprising a solvent and cellulose dissolved in the solvent , wherein the molded bodies of the loose spinning curtain are combined into a molded body bundle after the extrusion, and', 'the molded body bundle is, in a further step, fed to a draw-off member of the spinning device in order to start a continuous extrusion of the molded bodies,', 'wherein the tensile strength of the molded bodies of the loose spinning curtain, after their extrusion and before combining them into a molded body bundle, is increased in at least some areas., 'the molded bodies are extruded from the spinning solution through spinnerets of the spinning device in the form of a loose spinning curtain,'}2. The method according to claim 1 , wherein the tensile strength of the molded bodies is increased in at least some areas such that the molded bodies will substantially not rupture due to their own weight.3. The ...

HIGH-PERFORMANCE POLYETHYLENE MULTIFILAMENT YARN

Processes for making high-performance polyethylene multi-filament yarn are disclosed which include the steps of a) making a solution of ultra-high molar mass polyethylene in a solvent; b) spinning of the solution through a spinplate containing at least 5 spinholes into an air-gap to form fluid filaments, while applying a draw ratio DR; c) cooling the fluid filaments to form solvent-containing gel filaments; d) removing at least partly the solvent from the filaments; and e) drawing the filaments in at least one step before, during and/or after said solvent removing, while applying a draw ratio DRof at least 4, wherein in step b) each spinhole comprises a contraction zone of specific dimension and a downstream zone of diameter Dn and length Dn with Ln/Dn of from 0 to at most 25, to result in a draw ratio DR=DR*DRof at least 150, wherein DRis the draw ratio in the spinholes and DRis the draw ratio in the air-gap, with DRbeing greater than 1 and DRat least 1. High-performance polyethylene multifilament yarn, and semi-finished or end-use products containing said yarn, especially to ropes and ballistic-resistant composites, are also disclosed. 1. A ballistic resistant assembly comprising a plurality of preformed sheets , each preformed sheet comprising 2 layers of filaments from multifilament polyethylene yarn , the polyethylene having an IV of between 8 and 40 dL/g as measured on decalin solutions at 135° C. , the plurality of preformed sheets having an areal density of at least 1.5 kg/mand at most 4.3 kg/m , wherein the plurality of preformed sheets has a specific energy absorption of between 243 and 479 J·kg/mas measured against a 9*19 mm FMJ Parabellum FMJ bullet based on Stanag 2920.2. The ballistic resistant assembly according to claim 1 , wherein the plurality of preformed sheets has a specific energy absorption of between 243 and 391 J·kg/m.3. The ballistic resistant assembly according to claim 1 , wherein the plurality of preformed sheets has a specific energy ...

PREPARATION METHOD OF SUPERABSORBENT POLYMER FIBER

The present invention relates to a method for preparing superabsorbent polymer fiber and superabsorbent polymer fiber prepared thereby. According to the preparation method of the present invention, superabsorbent polymer in the form of fiber or non-woven fabric that maintains super absorbency function can be prepared. 1. A method for preparing superabsorbent polymer fiber comprising the steps of:polymerizing water-soluble ethylenically unsaturated monomers and a crosslinking agent to prepare a polymer aqueous solution comprising polymer wherein the water-soluble ethylenically unsaturated monomers and crosslinking agent are polymerized;adding sodium hydroxide to the polymer aqueous solution to prepare a neutralized spinning solution; andcentrifugally spinning the spinning solution, and then, drying.2. The method for preparing superabsorbent polymer fiber according to claim 1 , wherein the water-soluble ethylenically unsaturated monomers are one or more selected from the group consisting of anionic monomers and salts thereof such as isobutylene claim 1 , acrylic acid claim 1 , polyacrylic acid claim 1 , methacrylic acid claim 1 , maleic anhydride claim 1 , fumaric acid claim 1 , crotonic acid claim 1 , itaconic acid claim 1 , 2-acryloylethane sulfonic acid claim 1 , 2-methacryloylethane sulfonic acid claim 1 , 2-(meth)acryloylpropane sulfonic acid or 2-(meth)acrylamide-2-methyl propane sulfonic acid; non-ionic hydrophilic group containing monomers such as (meth)acrylamide claim 1 , N-substituted (meth)acrylate claim 1 , 2-hydroxyethyl (meth)acrylate claim 1 , 2-hydroxypropyl (meth)acrylate claim 1 , methylacrylate claim 1 , hydroxylpropyl (meth)acrylate claim 1 , methoxy polyethylene glycol (meth)acrylate claim 1 , or polyethylene glycol (meth)acrylate; and amino group containing unsaturated monomers such as (N claim 1 ,N)-dimethylaminoethyl (meth)acrylate claim 1 , (N claim 1 ,N)-dimethylaminopropyl (meth)acrylamide claim 1 , and quarternarized products thereof.3. ...

IMMERSED ROTARY JET SPINNING (IRJS) DEVICES AND USES THEREOF

Exemplary embodiments provide systems, devices and methods for the fabrication of three-dimensional polymeric fibers having micron, submicron and nanometer dimensions, as well as methods of use of the polymeric fibers. 1. A device for formation of one or more micron , submicron or nanometer dimension polymeric fibers , the device comprising:a reservoir for holding a solution comprising a polymer and including a lateral surface having one or more orifices for ejecting the polymer for fiber formation;a motion generator configured to impart rotational motion about an axis of rotation to the reservoir, the rotational motion of the reservoir causing ejection of the solution comprising the polymer radially outward with respect to the axis of rotation from the one or more orifices; anda collection device configured to hold a liquid, the collection device configured and positioned to accept the solution comprising the polymer ejected from the reservoir;wherein the reservoir and the collection device are positioned and configured such that the one or more orifices of the reservoir eject the polymer into an air gap between the one or more orifices and the liquid held in the collection device during rotational motion of the reservoir; andwherein the device is configured such that the ejection of the solution comprising the polymer into the air gap and subsequently into the liquid in the collection device causes formation of one or more micron, submicron or nanometer dimension polymeric fibers.2. The device of claim 1 , wherein the device further comprises a second motion generator capable of imparting rotational motion to the liquid in the collection device to generate a liquid vortex.3. The device of claim 2 , wherein the device is configured such that the air gap between the one or more orifices and the liquid held in the collection device during rotational motion of the reservoir is due claim 2 , at least in part claim 2 , to the liquid vortex generated by the second motion ...

Electrospinning head and electrospinning apparatus

In one embodiment, an electrospinning head has a nozzle unit and a control body. The nozzle unit is arranged opposite to a base material, is applied with a voltage, and thereby is capable of discharging a raw material liquid of fiber. The control body is arranged in the vicinity of the nozzle unit so as to extend to an outside of a spinning space between the base material and the nozzle unit. Further, the control body is applied with a voltage of the same polarity as the voltage to be applied to the nozzle unit, and thereby is capable of making an electric field to be generated at the periphery of the nozzle unit.

High Temperature Melt Integrity Battery Separators Via Spinning

A method for preparing a high temperature melt integrity separator, the method comprising spinning a polymer by one or more of a mechanical spinning process and an electro-spinning process to produce fine fibers. 1. A method comprising:providing a polymer solution comprising a chemical-resistant polymer in a solvent, wherein the chemical-resistant polymer;spinning the polymer solution into fine fibers by an electro-spinning method; and{'sub': '6', 'forming a fiber-based structure from the fine fibers, wherein the fiber-based structure does not significantly dissolve in an electrolyte solution comprising 1:1:1 EC:DMC:EMC and 1 mol/L LiPF, and wherein the fiber-based structure has an electrolyte contact angle with the electrolyte solution of equal to or lower than about 30°.'}2. The method of claim 1 , wherein the polymer solution comprises a polyetherimide.3. The method of claim 2 , wherein the polyetherimide comprises structural units based on para-phenylene diamines.4. The method of claim 1 , wherein the solvent comprises a phenolic solvent claim 1 , hexafluoroisopropanol claim 1 , dichloromethane claim 1 , trifluoroacetic acid claim 1 , chloroform claim 1 , tetrachloroethane claim 1 , 1 claim 1 ,3-dimethyl-2-imidazolidinone claim 1 , a pyrrolidone-based solvent claim 1 , or a combination thereof.5. The method of claim 1 , where the chemical resistant polymer has a weight to volume concentration of about 1% to about 20% in the solvent.6. The method of claim 1 , wherein forming the fiber-based structure comprises a drying step claim 1 , a dry laid process claim 1 , a thermal treatment claim 1 , a pressure treatment claim 1 , or combinations thereof.7. The method of claim 1 , wherein the fiber-based structure has a porosity in the range of about 10% to about 90%.8. The method of claim 1 , wherein the fiber-based structure has a MacMullin number equal to or lower than 10.9. The method of claim 1 , wherein the fiber-based structure has an average pore size in the range ...

IMMERSED ROTARY JET SPINNING DEVICES (IRJS) AND USES THEREOF

Exemplary embodiments provide systems, devices and methods for the fabrication of three-dimensional polymeric fibers having micron, submicron and nanometer dimensions, as well as methods of use of the polymeric fibers. 1. A device for formation of one or more micron , submicron or nanometer dimension polymeric fibers , the device comprising:a reservoir for holding a polymer and including a surface having one or more orifices for ejecting the polymer for fiber formation;a motion generator configured to impart rotational motion to the reservoir, the rotational motion of the reservoir causing ejection of the polymer through the one or more orifices; anda collection device holding a liquid, the collection device configured and positioned to accept the polymer ejected from the reservoir;wherein the reservoir and the collection device are positioned such that the one or more orifices of the reservoir are submerged in the liquid in the collection device; andwherein the ejection of the polymer into the liquid in the collection device causes formation of one or more micron, submicron or nanometer dimension polymeric fibers.2. The device of claim 1 , wherein the one or more orifices are completely submerged in the liquid in the collection device or the one or more orifices are partially submerged in the liquid in the collection device claim 1 , or the one or more orifices provide a liquid-to-liquid interface between the polymer and the liquid that is free of ambient air.3. (canceled)4. (canceled)5. The device of claim 1 , wherein the ejection of the polymer into the liquid in the collection device causes precipitation of the one or more micron claim 1 , submicron or nanometer dimension polymeric fibers claim 1 , or the ejection of the polymer into the liquid in the collection device causes cross-linking of the one or more micron claim 1 , submicron or nanometer dimension polymeric fibers.624.-. (canceled)25. A method for fabricating one or more micron claim 1 , submicron or ...

Polyphenylene fibers and corresponding fabrication methods

Described herein are polyphenylene fibers. The polyphenylene fibers have one or more polyphenylene polymers. The polyphenylene fibers can further include one or more poly(aryl ether sulfone) polymers. In some embodiments, the polyphenylene fibers can have an average diameter that is less than about 1 micron. The polyphenylene fibers can have desirable mechanical properties. Also described herein are methods for forming polyphenylene fibers. In some embodiments, the fibers can be fabricated using specifically engineered polymer solutions in conjunctions with adapted force spinning techniques. 115-: (canceled)20. The polyphenylene fiber of claim 16 , wherein the polyphenylene polymer comprises at least about 30 mole percent of repeat units Rpm.23. The polyphenylene fiber of claim 16 , wherein the polyphenylene polymer comprises at least about 40 mole percent repeat units Rpp.24. The polyphenylene fiber of claim 16 , wherein the polyphenylene fiber further comprises a poly(aryl ether sulfone) polymer.27. The polyphenylene fiber of claim 24 , wherein the poly(aryl ether) sulfone polymer is a polysulfone claim 24 , poly(ether sulfone) claim 24 , or poly(phenyl sulfone).28. The polyphenylene fiber of claim 24 , wherein the polyphenylene fiber comprises no more than about 60 wt. % of the poly(aryl ether sulfone) polymer.29. A method for making the polyphenylene fiber of claim 16 , the method comprising force spinning a polymer solution comprising a polyphenylene polymer and solvent to form the polyphenylene fiber.30. The method of claim 29 , wherein the solvent is a first solvent and wherein the polymer solution comprises a solvent blend including the first solvent and an antisolvent claim 29 , whereinthe first solvent is selected from, chloroform, toluene, tetrahydrofuran, dichloromethane, ethyl acetate, benzene, styrene, ethyl benzene, benzyl alcohol, 1,4-dioxane, carbon tetrachloride, tetrachloroethylene, methylene chloride, a phenolic solvent, pyridine, trichloroethane ...

FIBROUS STRUCTURE CONTAINING ARTICLES

Articles, such as sanitary tissue products, including fibrous structures, and more particularly articles including fibrous structures having a plurality of fibrous elements wherein the article exhibits differential cellulose content throughout the thickness of the article and methods for making same are provided. 1. An article comprising:a. a first paper web; andb. a second paper web;wherein at least one of the first and second paper webs comprises at least one meltblown fibrous structure comprising a thermoplastic polymer selected from the group consisting of: biodegradable thermoplastic polymers, compostable thermoplastic polymers, and mixtures thereof, and wherein the second paper web is associated with the first paper web.2. The article according to wherein at least one of the first and second paper webs comprises a plurality of fibers.3. The article according to wherein at least one of the fibers comprises a pulp fiber.4. The article according to wherein the pulp fiber comprises wood pulp fiber.5. The article according to wherein the wood pulp fiber is selected from the group consisting of: northern softwood kraft pulp fibers claim 4 , southern softwood kraft pulp fibers claim 4 , northern hardwood pulp fibers claim 4 , tropical hardwood pulp fibers claim 4 , and mixtures thereof.6. The article according to wherein the pulp fiber comprises trichome fiber.7. The article according to wherein at least one of the first and second paper webs comprises a wet-laid fibrous structure.8. The article according to wherein at least one of the first and second paper webs comprises an air-laid fibrous structure.9. The article according to wherein at least one of the first and second paper webs comprises a carded fibrous structure.10. The article according to wherein at least one of the first and second paper webs comprises an absorbent gel material.11. The article according to wherein at least one of the first and second paper webs comprises a surface having a surface pattern ...

PROCESS FOR MAKING HIGH-PERFORMANCE POLYETHYLENE MULTIFILAMENT YARN

Processes for making high-performance polyethylene multi-filament yarn are disclosed which include the steps of a) making a solution of ultra-high molar mass polyethylene in a solvent; b) spinning of the solution through a spinplate containing at least 5 spinholes into an air-gap to form fluid filaments, while applying a draw ratio DR; c) cooling the fluid filaments to form solvent-containing gel filaments; d) removing at least partly the solvent from the filaments; and e) drawing the filaments in at least one step before, during and/or after said solvent removing, while applying a draw ratio DRof at least 4, wherein in step b) each spinhole comprises a contraction zone of specific dimension and a downstream zone of diameter Dn and length Dn with Ln/Dn of from 0 to at most 25, to result in a draw ratio DR=DR* DRof at least 150, wherein DRis the draw ratio in the spinholes and DRis the draw ratio in the air-gap, with DRbeing greater than 1 and DRat least 1. High-performance polyethylene multifilament yarn, and semi-finished or end-use products containing said yarn, especially to ropes and ballistic-resistant composites, are also disclosed. 1. A preformed sheet layer comprising at least two monolayers comprised of high-performance polyethylene multifilament yarn and a binder , wherein the multifilament yarn is made from linear ultra-high molar mass polyethylene of IV 8-40 dl/g , contains n filaments and has a tensile strength of at least f*(n) GPa , wherein factor f is at least 5.8 and n is at least 5.2. The sheet layer of claim 1 , wherein the mono-layer is a woven and or non-woven fabric.3. The sheet layer of claim 1 , wherein the fibre direction in each mono-layer is rotated with respect to the fibre direction in an adjacent mono-layer.4. The sheet layer of claim 1 , wherein the binder has been applied by as a film claim 1 , as a transverse bonding strip or fibres claim 1 , or by impregnating and/or embedding the filaments with a matrix claim 1 , preferably the ...

Rotary spinning electrode

The invention relates to the rotary spinning electrode of an elongated shape into the device for production of nanofibres through electrostatic spinning of polymer solutions comprising a pair of end faces, between them there are positioned spinning members formed by wire, which are distributed equally along the circumference and parallel with axis of rotation of the rotary spinning electrode, while the end faces are made of electrically non-conducting material and all the spinning members are mutually connected in a electrically conductive manner.

Negative polarity on the nanofiber line

A centrifugal spinning system and method for forming a fibrous web containing nanofibers, microfibers, or a combination thereof from a molten polymer composition or an aqueous spinning solution is provided. Through careful control over the arrangement of the system, a fibrous web can be formed that is relatively defect free. To help accomplish this feature, at least two centrifugal spinning chambers, each containing a charged forming plate, are utilized. To minimize the present of defects in the fibrous web, the charge applied to the first spinning chamber has a polarity that is opposite the polarity of the charge applied to the second spinning chamber.

Verfahren und Drehspinneinrichtung zum gleichzeitigen Spinnen und Zwirnen von kuenstlichen Faeden

Asphalt-containing organic fibers

Asphalt/polymer fibers include, by weight, 30% to 85% polymeric material and 15% to 70% asphaltic material, where the polymeric material has a melt flow index of no more than about 35 grams/10 minutes. Preferably, the combination of polymeric material and asphaltic material has a melt flow index of from 80 grams/10 minutes to 800 grams/10 minutes. The asphaltic material is preferably asphalt having a softening point of from 82° C. to 177° C. The polymeric material is preferably a polymer selected from polypropylene, polyethylene, polystyrene, polyesters, ethylene copolymers, acrylates, methacrylates, and mixtures of these polymers. The organic fibers of asphalt/polymer may be intermingled with mineral reinforcing fibers and formed into products such as mats.

A method for preparing super absorbent polymer resin fiber

본 발명은 고흡수성 수지 섬유의 제조 방법 및 이로부터 제조된 고흡수성 수지 섬유에 관한 것이다. The present invention relates to a process for producing a superabsorbent resin fiber and a superabsorbent resin fiber produced therefrom.

一种平面接收式离心纺装置

本发明公开了一种平面接收式离心纺装置，本发明在喷丝器下方设置连续移动的收集带，调整合适的高度后，喷丝器在高速旋转时喷出的纺丝溶液瞬间形成纤维，并呈螺旋线下降收集于收集带上，最终形成连续不断的离心纺纤维网；本发明解决了离心纺连续长丝的制备问题，实现了离心纺批量化生产，可适用于宽幅非织造布表面纳米纤维或亚微米纤维的复合性或宽幅纳米或亚微米尺度的非织造布的生产。

回转式纺丝电极

本发明涉及一种细长形状的回转式纺丝电极(1)，所述纺丝电极(1)加到用于通过聚合物溶液的静电纺丝生产纳米纤维的装置中，同时包括一对端面(2，3)，在所述一对端面(2，3)之间，设置了若干由金属丝形成的纺丝构件，这些纺丝构件沿着圆周同等地分布，且与回转式纺丝电极(1)的旋转轴线(41)平行，而端面(2，3)用不导电材料制成，及所有纺丝构件都以导电方式相互连接。

超细弹性无纺布及其制备方法

本发明提供了一种基于平面接收式离心纺装置制备的超细弹性无纺布及其制备方法，通过将聚氨酯颗粒溶于N，N‑二甲基甲酰胺中配置纺丝液，然后将纺丝液注入平面接收式离心纺装置中进行离心纺丝。通过合理设置离心纺纺丝参数，保证了纺丝过程的顺利进行，制得的超细弹性无纺布中的纤维直径可达2.1±1.1μm，排列致密，拉伸强度可达到18.59±5.59MPa，断裂伸长率可达到450±20％，且该方法操作过程简单、适宜规模化量产、生产效率高。

Electrostatic spinning assembly

전기장에서 정전기 방사를 이용하여 점성 액체로부터 나노섬유를 제조하는 방사 돌기가 기술되어 있다. 방사 돌기는 중심축을 중심으로 반경 방향으로 배치되고 중심축을 따라 축방향으로 이격되어 있는 하나 이상의 좁은 환형체를 포함한다. 환형체는 디스크, 링 또는 코일일 수 있다. A spinneret is disclosed that produces nanofibers from viscous liquids using electrostatic radiation in an electric field. The radial projection includes one or more narrow annular elements disposed radially about a central axis and axially spaced along a central axis. The annulus may be a disk, ring or coil.

连续高效纳米纤维非织造布的制备方法和生产装置

本发明涉及一种连续高效纳米送纺丝溶液(15)；5)接收纳米纤维。用本发明制备纳米纤维非织造布不仅生产效率高，而且形成的纤维非织造布的厚度纤维非织造布的制备方法和生产装置，生产装置包括有供液系统、进液管(8)、连接机构、金属滚筒(6)，金属滚筒(6)外依次装有和其轴心相同的金属筛网(10)与纤维接收网(11)，纤维接收网(11)上装有退绕滚筒(12)和卷绕滚筒(13)，空心金属滚筒(6)上开有毛细孔(7)。制备方法包括以下步骤：1)配置聚合物纺丝溶液(15)；2)将金属滚筒(6)与金属筛网(10)间加电场；3)使金属滚筒(6)按一定速度旋转；4)计量泵(4)向金属滚筒(6)内部输均匀，有利于静电纺丝的规模化生产。

形成有机纤维和无机纤维的物料坯的方法

一种将有机体纤维和无机纤维成型为一个整体的方法,其包括采用无机纤维的旋转器(12),使热熔融的矿物材料在离心力的作用下形成无机纤维(22),直接使无机纤维形成向下移动的幕(24),形成成排对齐的有机纤维阵列,直接使有机纤维(55)与无机纤维相接触,从而使有机纤维与无机纤维形成整体,收集形成整体的无机纤维和有机纤维,形成纤维物料坯(36)。

Rotary multi-jet batch spinning device

旋转多射流批量纺丝装置，涉及静电纺丝装置。设有收集筒、分液台、金属薄膜、盖台、滚轮、滚珠、联轴器、伺服电机、电机架、支架、供液装置、导管、高压电源；盖台和分液台上分别设有上、下层导板阵列，分液台与盖台形成纺丝喷头主体，分液台和盖台边缘设有凹槽阵列，凹槽阵列中的每个凹槽分布于上层导板阵列中的两个导板之间，上下两个凹槽连接成微孔结构；分液台和盖台内侧均喷涂有金属薄膜，金属薄膜接电源；分液台底部与支架的顶部均设有环形轨道，在两个环形轨道之间设有滚珠并形成支承；分液台底部设有滚轮；分液台底部的轴段通过联轴器与伺服电机连接，伺服电机与支架固定连接；收集筒为圆形结构，收集筒与纺丝喷头同轴心安装并接地。

Fiber-tangled structure useful as cell settling material, wound covering, medical implant and carriers for pharmaceutical active substance and for producing depot medicament, comprises fibers made of partially interlaced gelatin material

The fiber-tangled structure useful as a cell settling material, a wound covering, a medical implant, a starting food product and carriers for a pharmaceutical active substance and for the production a depot medicament, comprises fibers made of partially interlaced gelatin material. The thickness of the fibers is 5-100 mu m. The tangled structure has areas, at which two or more fibers are turned into one another without phase boundary. The capillary suction effect of the tangled structure produces a capillary rise of >= 15 respect to pure water in 120 seconds. The fiber-tangled structure useful as a cell settling material, a wound covering, a medical implant, a starting food product and carriers for a pharmaceutical active substance and for the production a depot medicament, comprises fibers made of partially interlaced gelatin material. The thickness of the fibers is 5-100 mu m. The tangled structure has areas, at which two or more fibers are turned to one another without phase boundary. The capillary suction effect of the tangled structure produces a capillary rise of >= 15 respect to pure water in 120 seconds. The water absorbing capacity of the tangled structure is ten-fold or more of its dry weight. The gelatin material of >= 60 wt.% is amorphous. The tangled structure has an initial wettability of = 1 with respect to pure water, a surface energy of = 10 mN/m, a tear resistance of 140-180 g/m 2> in the dry condition of >= 0.15 N/mm 2>, an elongation at tear of >= 200%, and an open porous structure with an air permeability of >= 0.5 l/minute cm 2>. The tangled structure in hydrated condition forms a closed-porous, fibrous gel structure and has fiber fractions with different average fiber thickness. The fibers are produced by a rotor-spinning procedure and a part of the fibers has a twisted structure. The gelatin material has a gelatin of >= 200 bloom. The tangled structure comprises further fibers, which are formed further material ...

Electret nanofibrous web

The present invention is directed toward an electret nanofibrous web comprising a single source randomly intermingled fiber network with a range of fiber diameters that yields improved mechanical strength.

Fiber matting

In order to provide a fiber matting that is an improvement over the state of the art, in particular in the form of a flat material or part of a flat material, which may be used as a biodegradable material in medicine, in particular as an implant or carrier material for living cells (tissue engineering), but also a fiber matting as is used in food technology in a variety of applications, in particular as a preliminary product for foods, the invention proposes that the fiber matting include fibers made of a gelatin material, wherein the average thickness of said fibers is 1 to 500 µm and wherein the fiber matting has a plurality of regions in which two or more fibers merge into one another without a phase boundary.

method for manufacturing illite non woven fabric

PURPOSE: Illite non-woven fabric is characterized by having excellent deodorizing ability, antibacterial property, water purifying ability, purifying ability and durability, having a simple manufacturing process and reducing a production cost. The illite non-woven fabric is useful for a filter. A manufacturing method thereof is provided. CONSTITUTION: Illite non-woven fabric is obtained by the steps of: preparing 6-9wt.% of illite powder having 3000-4500mesh based on total weight; mixing the illite powder with polyester chip for manufacturing fiber; putting a mixture into a heating and agitating device, followed by agitating the mixture for 1-2hrs. at 130-200deg.C; heating and rotating the mixture in a rotary dryer for 10-20min. at 180-200deg.C to remove moisture; putting the dried mixture into a hopper for spinning; melt-spinning the mixture through a screw spinning device at 260-270deg.C; and then manufacturing the non-woven fabric.

用于制造聚合物纤维的系统、装置和方法

根据示例性实施方式，提供用于形成微米、亚微米和/或纳米尺寸聚合物纤维的方法。所述方法包括提供聚合物的静态沉积物。所述方法也包括接触所述聚合物的表面以传递足够的力，以便部分的所述聚合物脱离所述接触，并将所述聚合物的所述部分甩离所述接触和甩离所述聚合物的所述沉积物，由此形成微米、亚微米和/或纳米尺寸聚合物纤维。

Method for preparation of fibrils

Apparatus useful in the manufacture of thermoplastic Olefin polymer fibrils are prepared by a process carried out in a disc mill. A hot olefin polymer solution is fed into the working cavity defined by the discs. In passing through the working cavity, the hot polymer solution is broken up into a plurality of uniaxially-oriented liquid streams which follow tortuous liquid paths through the working cavity whereby each of the streams is attenuated to orient the solute polymer molecules in said streams. A coolant liquid is fed into the working cavity and cools the attenuated polymer streams to a temperature sufficiently low so that substantially all of the solute polymer is precipitated in the form of uniaxially-oriented polymer fibrils. The product recovered from the modified disc mill consists of a mixture of uniaxially-oriented polymer fibrils, polymer solvent, and coolant liquid. The fibrils are recovered and refined in subsequent downstream operations.

A method for preparing super absorbent polymer resin fiber

본 발명은 고흡수성 수지 섬유의 제조 방법 및 이로부터 제조된 고흡수성 수지 섬유에 관한 것이다. 본 발명에 따른 제조 방법에 의하면, 수분을 흡수하는 고흡수성(Super Absorbency) 기능을 유지하면서 섬유(fiber) 또는 부직포(non- woven fabric) 형태의 고흡수성 수지를 제조할 수 있다. The present invention relates to a process for producing superabsorbent polymer fibers and to superabsorbent polymer fibers prepared therefrom. According to the manufacturing method according to the present invention, it is possible to prepare a super absorbent polymer in the form of a fiber or non-woven fabric while maintaining a super absorbent function of absorbing moisture.

Nanofiber bundle obtaining machine

一种纳米纤维成束获得机，其内的外室壳的内部开设有内室腔，内室腔的中部设置有上加热仓，上加热仓的中部设置有上加热体，上加热仓的顶部依次经封闭盖、检修仓后与带动轴相连接，外室壳的侧壁上开设有与内室腔相通的喷嘴部，外室壳的底面与下加热体相连接，丝源室、上加热仓、下加热体都位于收集装置的内部，收集装置的顶部、底部分别与顶部平板、固定平台相连接，顶部平板中的水平弹性件以及固定平台中的滑动杆、滑动槽配合都可以调整收集装置、喷嘴部的间距。本设计不仅生产效率较高、加热效果较好、稳定性较强，而且收集效率较高、可控性较强、产品形式多样。

Centrifugal gas electro-spinning device used for preparing large number of three-dimensional nanofiber scaffolds

本发明公开了一种大量制备三维纳米纤维支架的离心气电纺装置，包括高压供电装置、供气装置、离心喷头、敞开式旋转接收装置及离心驱动机构，离心喷头内部具有储液腔，离心喷头上设有出丝细孔，敞开式旋转接收装置包括转轴、传动装置及若干支撑臂，支撑臂随转轴转动时可形成碗状回转面，敞开式旋转接收装置设置多个，且以离心喷头为中心排列成环形，高压供电装置与离心喷头和敞开式旋转接收装置连接，形成产生溶液或熔体射流所需电场，离心喷头设有导气通道，导气通道与供气装置连接，可产生辅助拉伸气流。电场、气流和离心力使喷射出的聚合物形成纳米纤维，对生物材料的兼容性更好，材料适用范围广，获得的支架结构利于组织工程应用中的细胞生长。

A kind of centrifugal spinning device

本发明公开了一种离心纺丝装置，属于纤维材料纺丝技术领域。离心纺丝装置主体结构包括底座、支架、给液系统、出液口、流量控制模块、进液口、轴承、喷丝器、喷丝孔、集丝器、驱动装置、转动轴、升降固定装置、水平移动装置、控制器和输液管；水平移动装置固定设置在底座上，带动升降固定装置沿喷丝器半径方向移动，升降固定装置一端固定集丝器，另一端与水平移动装置连接，带动集丝器沿喷丝器半径方向移动，出液口上固定设置流量控制模块，控制器分别与流量控制模块和驱动装置电连接。其具有以下优点：喷丝器更换和清洗方便；提高单次生产成品的接收面积，提高生产效率；转速与流量的自动控制，保证喷丝连续稳定，便于批量化生产。

Alternate commingling of mineral fibers and organic fibers

一种生产矿物纤维(16)的方法包括从一个或多个旋转的矿物纤维喷丝头(10)借助离心作用制成矿物纤维(16)，形成一个或多个在收集表面(12)上方的向下移动的矿物纤维帐幔(22)，使用一个或多个旋转有机纤维喷丝头(24)借助离心作用从熔融有机材料(32)制成有机纤维(34)，形成一个或多个在收集表面上方的向下移动的有机纤维帐幔(38)，矿物纤维帐幔(22)与有机纤维帐幔(38)基本共线，有机纤维帐幔(38)与矿物纤维帐幔(22)交错以结合有机材料和矿物纤维，在收集表面收集结合的有机材料和矿物纤维(44)。