Class / Patent application number | Description | Number of patent applications / Date published |
264465000 | Utilizing electrostatic charge, field, or force (e.g., pinning, etc.) | 82 |
20080251971 | Electrode for supercapacitor having metal oxide deposited on ultrafine carbon fiber and the fabrication method thereof - The present invention discloses an improved electrode for a supercapacitor and a method of preparation thereof. The inventive electrode comprises a collector, a carbon substrate disposed on the collector comprising ultrafine carbon fibers having a specific surface area of at least 200 m | 10-16-2008 |
20080272520 | NONWOVEN FABRIC AND PROCESS FOR PRODUCING THE SAME - A process for production of a nonwoven fabric, which comprises a step wherein a thermoplastic polymer is dissolved in a mixed solvent composed of a volatile good solvent and a volatile poor solvent, a step wherein the resulting solution is spun by an electrospinning method and a step wherein a nonwoven fabric accumulated on a collecting sheet is obtained, is employed to provide a nonwoven fabric having a surface area sufficiently large as a matrix for cell culturing in the field of regenerative medicine, with large gaps between filaments and a low apparent density suitable for cell culturing. | 11-06-2008 |
20080277836 | METHOD FOR PRODUCING NANO-FIBER WITH UNIFORMITY - The present invention relates to a method for the mass-production of nanofiber through electrospinning, particularly to a method for the mass-production of nanofiber having required properties by adjusting the spinning condition of a spinning area in which nozzle blocks and collectors are installed for electrospinning the spinning solution with uniformity. The method for producing nanofiber by electrospinning comprises the steps of determining a spinning area formed by a nozzle block in which a plurality of spinning nozzles are arranged and a collector on which nanofiber are collected; determining factors in adjusting physical properties of nanofiber in the spinning area; and adjusting the determined factors and electrospinning in the spinning area. | 11-13-2008 |
20080296808 | Apparatus and Method for Producing Electrospun Fibers - An apparatus for making electrspun fibers comprises a collector that may be submerged in a coagulation bath. The collector may be automatically movable between a first position and a second position, wherein at least a portion of the collected fibers are submerged in a coagulation bath in the first position and spaced apart from the coagulation bath in the second position. The collector may be a rotating collector. A process for making electrospun fibers comprises electrospinning a dispersion and collecting a plurality of electrospun fibers, followed by submerging the collected fibers in a coagulation bath. | 12-04-2008 |
20090014920 | POLYMER FILAMENTS - The invention relates to polymer filaments and methods for their production. In particular, although not exclusively, the invention relates to conducting polymer filaments and their production from solutions of polymerisable oxidizable monomer units. | 01-15-2009 |
20090091065 | Electrospinning Apparatus For Producing Nanofibers and Process Thereof - The present disclosure provides an electrospinning apparatus for producing aligned and crossed nanofibers and method of electrospinning using said apparatus to produce aligned and crossed nanofibers. The electrospinning apparatus comprises of a supported horizontal surface; a DC motor placed below the horizontal surface, a circular rotating disc attached to the DC motor by means of shaft which rotates said disc; a reservoir with an electrospinning element having at least one tip placed perpendicularly above the disc surface, said electrospinning element has a passage by which a substance from which the nanofibers are to be composed is provided to an interior of the tip of the electrospinning element, said electrospinning element configured to electrospin said nanofibers by high voltage mediated extraction of the substance from the tip of the electrospinning element; and at least a focusing device that is positioned exactly below the electrospinning element tip configured to focus the electrospun nanofibers by manipulating the electric field and the disc surface for focusing the electrospun nanofibers into a defined region on the disc surface. The electrospinning element and the focusing device are connected to the opposite terminals of an external high voltage (DC) power supply and face exactly opposite each other. | 04-09-2009 |
20090127748 | METHOD AND APPARATUS FOR PRODUCING NANOFIBERS AND POLYMERIC WEBS - A polymer solution that is prepared by dissolving a polymeric substance in a solvent is supplied into a cylindrical container serving as a rotating container having a plurality of small holes. The cylindrical container is driven to rotate by rotation drive means, and an electric field is applied by high voltage generating means to polymeric filaments discharged from the small holes so that they become electrically charged. Then, primary and secondary electrostatic explosions associated with the centrifugal force and the evaporation of the solvent take place, drawing the polymeric filaments and producing nanofibers made of the polymeric substance. These nanofibers are deposited to produce a polymeric web. Accordingly, by employing a simple structure, nanofibers and a polymeric web utilizing them can be produced evenly with excellent productivity. | 05-21-2009 |
20090152773 | Controlled Electrospinning of Fibers - Electrospinning apparatus and methods for spinning a polymer fiber from a fluid comprising a polymer in the presence of an electric field established between at least one collector and a jet supply device, in a first embodiment comprising: a) forming an electrospinning jet stream of the fluid directed toward the at least one collector; b) controlling dispersion characteristics of the fluid by applying a magnetic field between the jet supply device and the at least one collector; c) forming at least one polymer fiber at the at least one collector; and in a second embodiment comprising: a) forming an electrospinning jet stream of the fluid directed toward a plurality of collectors; b) controlling dispersion characteristics of the fluid by applying different voltages to at least two collectors of the plurality of collectors; c) forming at least one polymer fiber at least one collector of the plurality of collectors. | 06-18-2009 |
20090160099 | CENTRIFUGAL SOLUTION SPUN NANOFIBER PROCESS - The invention relates to a process for forming nanofibers from a spinning solution utilizing a high speed rotating spin disk having a flat surface. The nanofibers can be collected into a uniform web for selective barrier end uses. | 06-25-2009 |
20090189318 | Bottom-up electrospinning devices, and nanofibers prepared by using the same - A conventional electrospinning devices is problematic in that the productivity is low and a droplet, by which a spinning liquid is not formed into fiber but dropped in a drop shape, occurs, to thereby deteriorate the quality of a nonwoven fabric. To solve the above problem, the present invention provides an bottom-up electrospinning devices, comprising: a spinning liquid main tank | 07-30-2009 |
20090273123 | POLYMER MEMBRANE FOR A FUEL CELL, A METHOD OF PREPARING THE SAME, AND A MEMBRANE-ELECTRODE ASSEMBLY FUEL CELL SYSTEM COMPRISING THE SAME - A polymer electrolyte membrane for a fuel cell, a method of preparing the same, and a fuel cell system comprising the same. The polymer electrolyte membrane includes a metal-bound inorganic ion-conductive salt and an ion-conductive cation exchange resin. | 11-05-2009 |
20090321997 | PROCESS FOR CONTROLLING THE MANUFACTURE OF ELECTROSPUN FIBER MORPHOLOGY - A apparatus and process of forming electrospun fibers including the steps of supplying a substantially homogeneous mixture of a solvent and a polymer which can be formed into an electrospun fiber; electrospinning the polymer into a fiber in an enclosed chamber; monitoring the humidity in said chamber; and changing the partial pressure of solvent evaporation to thereby modify the morphology of the thus formed fibers. | 12-31-2009 |
20100001438 | PROCESS FOR PRODUCING MICROFIBER ASSEMBLY - A process for producing a fiber assembly or agglomerate requiring micropores, such as for a battery separator or any of various filters, which is performed by electrostatic spinning and provides high productivity and ease of maintenance, is provided. The process for producing a microfiber assembly or agglomerate by electrostatic spinning includes continuously forming bubbles on a polymer solution or a polymer melt and applying high voltage to the formed bubbles. The bubbles can be formed by passing compressed air through porous material of one or a combination of two or more of plastic, ceramic and metal materials, or capillaries. | 01-07-2010 |
20100013126 | PROCESS FOR PRODUCING NANO- AND MESOFIBERS BY ELECTROSPINNING COLLOIDAL DISPERSIONS - The present invention relates to a process for producing polymer fibers, especially nano- and mesofibers, by the electrospinning process, in which a colloidal dispersion of at least one essentially water-insoluble polymer and of at least one nonionic surfactant, if appropriate further comprising at least one water-soluble polymer, is electrospun in an aqueous medium. The present invention further relates to fibers obtainable by this process. | 01-21-2010 |
20100013127 | MANUFACTURING DEVICE AND THE METHOD OF PREPARING FOR THE NANOFIBERS VIA ELECTRO-BLOWN SPINNING PROCESS - The invention relates to a nanofiber web preparing apparatus and method via electro-blown spinning. The nanofiber web preparing method includes feeding a polymer solution, which is a polymer dissolved into a given solvent, toward a spinning nozzle, discharging the polymer solution via the spinning nozzle, which is charged with a high voltage, while injecting compressed air via the lower end of the spinning nozzle, and collecting fiber spun in the form of a web on a grounded suction collector under the spinning nozzle, in which both of thermoplastic and thermosetting resins are applicable, the solution does not need to be heated and electrical insulation is readily realized. | 01-21-2010 |
20100032872 | SOLUTION SPUN FIBER PROCESS - The invention relates to a process for forming fibers from a spinning solution utilizing a high speed rotary sprayer. The fibers can be collected into a uniform web for selective barrier end uses. Fibers with an average fiber diameter of less that 1,000 nm can be produced. | 02-11-2010 |
20100059906 | HIGH THROUGHPUT ELECTROBLOWING PROCESS - The present invention is a fiber spinning process comprising the steps of providing a polymer solution, which comprises at least one polymer dissolved in at least one solvent with a vapor pressure of at least about 6 kPa at 25° C., to a spinneret, issuing the polymer solution in combination with a blowing gas in a direction away from at least one spinning nozzle in the spinneret and in the presence of an electric field wherein the polymer solution is discharged through the spinning nozzle at a discharge rate between about 6 to about 100 ml/min/hole, forming fibers, and collecting the fibers on a collector. | 03-11-2010 |
20100072674 | METHOD AND APPARATUS FOR PRODUCING NANOFIBERS AND POLYMER WEB - Nanofibers are formed from a polymer material by rotating a conductive rotating container having a plurality of small holes while supplying a polymer solution formed by dissolving a polymer material in a solvent into the rotating container, charging the polymer solution discharged from the small holes of the rotating container by charging means, and drawing the discharged filamentous polymer solution by centrifugal force and an electrostatic explosion resulting from evaporation of the solvent. The nanofibers from this production step are oriented and made to flow from one side toward the other side in a shaft center direction of the rotating container by a reflecting electrode and/or blowing means, or those nanofibers are deposited, to produce a polymer web. The nanofibers and the polymer web using these nanofibers can be produced uniformly by a simple configuration with good productivity. | 03-25-2010 |
20100084793 | Electro-spinning apparatus and electro-spinning method - An electro-spinning apparatus includes a spinning jet, a stuff supply unit, a solvent supply unit, a collection unit, and a voltage driving unit. The spinning jet has a first channel and a second channel. The first channel has a first outlet, and the second channel has a second outlet. The stuff supply unit is connected to the first channel and supplies a liquid stuff to the first outlet. The solvent supply unit is connected to the second channel and supplies a gaseous solvent to the second outlet. The voltage driving unit applies a voltage difference between the spinning jet and the collection unit, so that the liquid stuff is spun and collected to the collection unit after being output from the first outlet and passing through the gaseous solvent released from the second outlet. Besides, an electro-spinning method is also provided. | 04-08-2010 |
20100148404 | NANOFIBER SPINNING METHOD AND DEVICE - Provided is a nanofiber spinning method and device for producing a high strength and uniform yarn made of nanofibers with high productivity and at a low cost. | 06-17-2010 |
20100148405 | NANOFIBER PRODUCING METHOD AND NANOFIBER PRODUCING APPARATUS - An object of the present invention is to stabilize the properties of nanofibers produced. | 06-17-2010 |
20100181707 | Sol-Gel Composition for Fabricating Conductive Fibers - Disclosed herein are sol-gel compositions for fabricating conductive fibers in an electrospinning process and methods for producing the same. | 07-22-2010 |
20100219563 | Apparatus and Method for Manufacturing Polymeric Fibrils - An electrospinning apparatus is described. The electrospinning apparatus has a rotary nozzle mechanism that moves simultaneously along a non-linear track for forming polymeric fibrils, so that the polymeric fibrils can be piled to form a uniform web on a receiving carrier from any receiving angle. Therefore, the electrospinning apparatus resolves problems of the prior polymeric fibrils, such as various distribution and slow production rate. In addition, a method of manufacturing polymeric fibrils in the aforementioned electrospinning apparatus is further described. | 09-02-2010 |
20100283189 | BUBBLE LAUNCHED ELECTROSPINNING JETS - The invention relates to a novel method for electrospinning fibers wherein the fiber-spinning solution is infused with gas bubbles which travel through the electrospinning fluid, causing the bubbles to be coated with electrospinning solution. The coated bubbles, in turn, in response to an applied electrical force, generate jets of the electrospinning fluid that travel away from the bubble surface. The invention further relates to the fibers formed by this bubble-jet process and to products made therefrom. | 11-11-2010 |
20110018174 | Electrospinning Process and Apparatus for Aligned Fiber Production - An electrospinning process and apparatus for forming aligned electrospun fibers. A time-dependent (AC) voltage is applied to a multi-electrode collector in order to temporally control the location and orientation of fiber deposition. | 01-27-2011 |
20110037202 | METHOD AND DEVICE FOR SPINNING OF POLYMER MATRIX IN ELECTROSTATIC FIELD - The present disclosure relates to the method for spinning of polymer matrix in an electrostatic field induced in a spinning space between a spinning electrode and a collecting electrode, at which the polymer matrix is delivered from a matrix reservoir into the electrostatic field on surface of the spinning electrode or by the spinning elements of the spinning electrode, whose principle consist in that the temperature of the spinning electrode or spinning elements of the spinning electrode, and/or reservoir, and/or of polymer matrix is increased above the surrounding temperature by means of resistance heating. The disclosure further relates to the device for performing of this method. | 02-17-2011 |
20110101571 | METHOD OF MAKING COILED AND BUCKLED ELECTROSPUN FIBER STRUCTURES - An apparatus and method for making coiled and buckled electrospun fiber including (a) providing a solution of a polymer in an organic solvent and a device for electrospinning fiber; b) subjecting the polymer solution to an electric field such that at least one fiber is electrospun; (c) subjecting the so formed fiber to electrical bending and mechanical buckling instability to hereby form a coiled and buckled fiber; (d) collecting the at least one fiber on a collector, such that a fiber structure is produced. | 05-05-2011 |
20110148004 | PROCESS FOR PRODUCING NANO- AND MESOFIBERS BY ELECTROSPINNING COLLOIDAL DISPERSIONS COMPRISING AT LEAST ONE ESSENTIALLY WATER-INSOLUBLE POLYMER - The present invention relates to a process for producing polymer fibers, especially nano- and mesofibers, by electrospinning a colloidal dispersion of at least one essentially water-insoluble polymer in an aqueous medium, and to fibers obtainable by this process, to textile fabrics comprising the inventive fibers, and to the use of the inventive fibers and of the inventive textile fabrics. | 06-23-2011 |
20110148005 | Method for Elevated Temperature Electrospinning - Elevated temperature electrospinning apparatus comprises a pump upstream of or containing a resistance heater, means to shield applied electrostatic field from the resistance heater, and a temperature modulator for modulating temperature in the spinning region. | 06-23-2011 |
20110148006 | FIBRE-PRODUCTION DEVICE AND FIBRE-PRODUCTION METHOD - A fiber-producing apparatus includes a storage tank for storing a melt of a source material, an electric storage tank heater, a non-contact thermometer for the melt, a temperature control section which between the electric heater and its power supply, which controls the electric heater based on measurement results obtained from the non-contact thermometer to adjust the temperature of the melt, a nozzle for ejecting the melt in the storage tank, a collector for collecting a fiber, a voltage generator for electrifying the melt, and an insulating transformer disposed between the temperature control section and the electric heater. Since a closed circuit is formed by the electric heater, the electric heater power supply, the temperature control section, and the insulating transformer disposed therebetween, no high-voltage current flows into the electric heater power supply or the temperature control section. This allows stable spinning to be readily performed without breaking the apparatus. | 06-23-2011 |
20110180972 | METHOD FOR MANUFACTURING UNIFORMLY SEPARATED NANOFILAMENTS OR MICROFIBERS - Method for manufacturing uniformly separated, nanofibers, nanofilaments or microfibers. In some embodiments, the method includes steps of preparing a spinning or molten solution with a electrospinning raw material, electrospinning the solution to manufacture nanofibers, collecting the nanofibers, stretching the nanofibers, and heat-treating the collected nanofibers for a prescribed period of time. Nanofibers having a diameter of 1000 nm or less and microfibers having a diameter of 1 to 5 μm can be manufactured by methods of the invention. | 07-28-2011 |
20120001369 | Sol-Gel Composition for Fabricating Conductive Fibers - Disclosed herein are sol-gel compositions for fabricating conductive fibers in an electrospinning process and methods for producing the same. | 01-05-2012 |
20120013046 | ELECTROSPINNING MANUFACTURE FOR DRUG CARRIERS - An electrospinning manufacture for drug carriers is disclosed. The method comprises a preliminary step mixing a predetermined drug, an alginate, and a saline to obtain a mixture; an electric field establishing step providing a collection plate and an emitter filled with divalent cation agent and the mixture individually, wherein an electric field is applied to the collection plate and the emitter to form a voltage therebetween; and an electrospinning step sequentially dropping the mixture from the emitter into the divalent cation agent filled in the collection plate via the driving of the electric field, triggering a crosslinking-gelating reaction between the divalent cation and the alginate, wherein a plurality of gel particles is produced for a coating of the predetermined drug presenting a drug carrier performance. | 01-19-2012 |
20120013047 | NANOFIBER MANUFACTURING APPARATUS AND METHOD OF MANUFACTURING NANOFIBERS - A nanofiber manufacturing apparatus ( | 01-19-2012 |
20120086154 | Near Field Electrospinning of Continuous, Aligned Fiber Tows - A near field electrospinning system includes a spinneret that provides a plurality of fibers and a collector positioned relative to the plurality of spinnerets. The electrospinning system also includes a coagulant flowing along the collector. The coagulant is configured to receive a plurality of fibers from the spinneret(s) and move the plurality of fibers away from the spinneret(s). The electrospinning system also includes a roller configured to collect the plurality of fibers from the coagulant as a substantially untwisted bundle of continuous fibers. | 04-12-2012 |
20120193836 | Electrospinning Process for Manufacture of Multi-Layered Structures - Devices and methods for high-throughput manufacture of concentrically layered nanoscale and microscale fibers by electrospinning are disclosed. The devices include a hollow tube having a lengthwise slit through which a core material can flow, and can be configured to permit introduction of sheath material at multiple sites of Taylor cone formation. | 08-02-2012 |
20120217681 | PROCESS FOR PRODUCING NANOFIBRES - The present invention relates to a process for producing metal oxide nanofibers using a sol-gel precursor. The nanofibers produced by the process according to the invention are notable for an increased metal oxide content compared to the prior art. | 08-30-2012 |
20120256355 | MANUFACTURING DEVICE AND THE METHOD OF PREPARING FOR THE NANOFIBERS VIA ELECTRO-BLOWN SPINNING PROCESS - The invention relates to a nanofiber web preparing apparatus and method via electro-blown spinning. The nanofiber web preparing method includes feeding a polymer solution, which is a polymer dissolved into a given solvent, toward a spinning nozzle, discharging the polymer solution via the spinning nozzle, which is charged with a high voltage, while injecting compressed air via the lower end of the spinning nozzle, and collecting fiber spun in the form of a web on a grounded suction collector under the spinning nozzle, in which both of thermoplastic and thermosetting resins are applicable, the solution does not need to be heated and electrical insulation is readily realized. | 10-11-2012 |
20120299223 | DRUG LOADED FIBERS - Implants and methods for the delivery of a therapeutic agent to a target location within a patient's body are disclosed. The implants include a fiber comprising a polymeric material and having a diameter of up to about twenty microns, and a first therapeutic agent within the fiber. The therapeutic agent is substantially in particulate form. The implants are of a variety of configurations, such as individual fibers, yarns, ropes, tubes, and patches. | 11-29-2012 |
20130082424 | ANTIBACTERIAL NANOFIBER - Disclosed is an antibacterial nanofiber which comprises a polymer having an electron-withdrawing group and/or an electron-withdrawing atomic group and has an average fiber diameter of not less than 1 nm and less than 1000 nm, wherein the ratio of the binding energy of the minimum unit of the polymer at 25° C. to the binding energy of the electron-withdrawing group and/or the electron-withdrawing atomic group contained in the minimum unit of the polymer at 25° C. is 0.13 or greater. The nanofiber has an antibacterial activity by itself, and therefore can exhibit an antibacterial activity without the need of adding any antibacterial agent. | 04-04-2013 |
20130093122 | LIQUID SILANE-BASED COMPOSITIONS AND METHODS FOR PRODUCING SILICON-BASED MATERIALS - Described herein are synthesis schemes and methods for producing silicon based nanostructures and materials, including compositions and methods for synthesis of silicon-based nanowires and composites from three-component and four-component liquid silane/polymer inks. Materials and methods for producing silicon based micro and nanofibers that can be used in a variety of applications including material composites, electronic devices, sensors, photodetectors, batteries, ultracapacitors, and photosensitive substrates, and the like. | 04-18-2013 |
20130241115 | Electrospinning Process for Manufacture of Multi-Layered Structures - Devices and methods for high-throughput manufacture of concentrically layered nanoscale and microscale fibers by electrospinning are disclosed. The devices include a hollow tube having a lengthwise slit through which a core material can flow, and can be configured to permit introduction of sheath material at multiple sites of Taylor cone formation formation. | 09-19-2013 |
20130300033 | FIBROUS SEPARATION MEMBRANE FOR SECONDARY BATTERY AND MANUFACTURIING METHOD THEREOF - Disclosed herein is a fibrous separation membrane for secondary batteries, comprising: a support layer containing cellulose fiber; and a first heat-resistant resin layer applied on one side of the support layer. | 11-14-2013 |
20130313758 | ELECTROSPINNING PROCESS FOR FIBER MANUFACTURE - Devices and methods for high-throughput manufacture of concentrically layered nanoscale and microscale fibers by electrospinning are disclosed. The devices include a hollow tube having a lengthwise slit through which a core material can flow, and can be configured to permit introduction of sheath material at multiple sites of Taylor cone formation formation. | 11-28-2013 |
20140048982 | Multizone Electroblowing Process and Apparatus - Methods and apparatuses are provided for producing fibers via electroblowing. In an embodiment of the present invention, a polymer stream, formed from a spinning nozzle, passes through a first temperature zone for a first residence time, and subsequently passes through a second temperature zone for a second residence time, where the second zone has a higher average temperature than the first zone. In an embodiment of an apparatus of the present invention, the apparatus has a region between the spinning nozzle outlet and collector that includes at least two zones through which a polymer stream passes, where the second zone has a higher average temperature than the first zone. | 02-20-2014 |
20140097558 | NANOFIBER FILTERING MATERIAL FOR DISPOSABLE/REUSABLE RESPIRATORS - Embodiments relate generally to methods of manufacture of a filtration media, such as a personal protection equipment mask or respirator, which may incorporate an electrospinning process to form nanofibers. Some embodiments may comprise electrospinning material onto a convex mold, which may, for example, be in the shape of a human face. Other embodiments may comprise electrospinning material onto an inner and/or outer shell of a personal protective equipment mask, such as a flat fold mask. In an embodiment, the electrospun nanofibers may be functionalized, and therefore may, for example, be operable to capture one or more gases. | 04-10-2014 |
20140103583 | SYSTEMS AND METHODS FOR FACILITATING THE GENERATION OF CORE-SHEATH TAYLOR CONES IN ELECTROSPINNING - Systems and methods for electrospinning of core-sheath fibers are provided. The systems and methods achieve optimization of a shear stress that exists at a fluid boundary between core and sheath polymer solutions, by varying certain parameters of an electrospinning apparatus and/or the solutions used therewith. | 04-17-2014 |
20140167329 | 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. | 06-19-2014 |
20140210141 | PROCESS OF MAKING DIMENSIONALLY STABLE NONWOVEN FIBROUS WEBS - Dimensionally stable nonwoven fibrous webs include a multiplicity of continuous fibers formed from one or more thermoplastic polyesters and polypropylene in an amount greater than 0% and no more than 10% by weight of the web. The webs have at least one dimension which decreases by no greater than 10% in the plane of the web when heated to a temperature above a glass transition temperature of the fibers. A spunbond process may be used to produce substantially continuous fibers that exhibit molecular orientation. A meltblown process may be used to produce discontinuous fibers that do not exhibit molecular orientation. In some embodiments, the fibers comprise a viscosity modifier and/or an anionic surfactant. The webs may be used as articles for filtration, sound absorption, thermal insulation, surface cleaning, cellular growth support, drug delivery, personal hygiene, medical apparel, or wound dressing. | 07-31-2014 |
20140246812 | PROCESS FOR PRODUCING POLYMERIC STRUCTURES THAT HAVE ACTIVATED SURFACES AND ACTIVATED POLYMERIC STRUCTURES - The present invention relates to a process for producing polymeric structures that have activated surfaces. The process proved to be simple, quick, with high production capacity and low operating costs. The process occurs by depositing a polymer solution, which is assisted by a high electric field, on a conductive liquid surface to produce particles and/or filaments that have an activated surface. More particularly, the process of the present invention has the ability to produce particles and/or filaments that have chemically activated surfaces, in a single process. | 09-04-2014 |
20140291897 | PRODUCTION AND USE OF LAMINATED NANOFIBROUS STRUCTURES - An electrospinning device for providing a predetermined distance profile for the distance between outlets of the electrospinning device and the receiving surface. The latter may be obtained by geometrically adapting the electrospinning device or by moving the outlets with respect to the receiving surface during growth of the fibrous structure. | 10-02-2014 |
20140319740 | Electrospun Fiber Mats from Polymers Having a Low Tm, Tg, or Molecular Weight - Methods and apparatus for forming non-woven fiber mats from polymers and monomers that are traditionally difficult to use for fiber formation are shown and described. Applicable techniques include electrospinning and other traditional fiber formation methods. Suitable polymers and monomers include those having low molecular weight, a low melting point, and/or a low glass transition temperature. | 10-30-2014 |
20140353882 | ELECTROSPINNING APPARATUSES & PROCESSES - Provided herein are electrospinning systems, apparatuses, components, and processes for the preparation of nanofibers, including high throughput systems, apparatuses, and processes for producing high performance nanofibers. | 12-04-2014 |
20150145175 | NANOFIBER FILTERING MATERIAL FOR DISPOSABLE/REUSABLE RESPIRATORS - Embodiments relate generally to methods of manufacture of a filtration media, such as a personal protection equipment mask or respirator, which may incorporate a forcespinning process to form nanofibers. Some embodiments may comprise forcespinning material onto a convex mold, which may, for example, be in the shape of a human face. Other embodiments may comprise forcespinning material onto an inner and/or outer shell of a personal protective equipment mask, such as a flat fold mask. In an embodiment, the forcespun nanofibers may be functionalized, and therefore may, for example, be operable to capture one or more gases. | 05-28-2015 |
20150359619 | Small Diameter Vascular Graft Produced by a Hybrid Method - The present invention relates to a hybrid graft and methods of generating the hybrid graft. The hybrid graft comprises an exterior surface and a luminal surface. The luminal surface comprises a micropattern of grooves to which cells adhere and orient along. The exterior surface comprises electrospun microfibers wherein the microfibers provide mechanical properties to the graft. The hybrid graft is capable supporting endothelial cell attachment, endothelial cell alignment, cell proliferation, and maintaining their in vivo function. The graft of the invention can recapitulate the in vivo morphology and function of natural vascular endothelium. | 12-17-2015 |
20160010243 | COMPOSITIONS INCORPORATING DIELECTRIC ADDITIVES FOR PARTICLE FORMATION, AND METHODS OF PARTICLE FORMATION USING SAME | 01-14-2016 |
20160017279 | SURFACE IMMOBILIZATION OF VARIOUS FUNCTIONAL BIOMOLECULES USING MUSSEL ADHESIVE PROTEIN - The present invention relates to technology of immobilizing or coating various functional bioactive substances on various surfaces without physical chemical treatment using mussel adhesive protein. More specifically, the present invention relates to a functional scaffold for tissue engineering comprising artificial extracellular matrix, manufactured by coating various functional bioactive substances on the surface of nanofiber and metal scaffold using mussel adhesive protein, and a method of manufacturing the same. | 01-21-2016 |
20160024690 | Electrospinning Apparatus and Methods of Use Thereof - The invention relates to an electrospinning apparatus and method of use thereof. | 01-28-2016 |
20160047062 | CENTRIFUGAL ELECTROSPINNING PROCESS - The present disclosure provides a fiber-forming process that includes: providing a centrifugal electrospinning apparatus that includes: an emitter that includes a rotating element having a rotational speed of 10,000 rpm or less; and a collector; and providing a spinning solution including at least one polymer dissolved in at least one solvent; supplying the spinning solution to the emitter; and directing the spinning solution from the emitter toward the collector under conditions effective to form separate fibrous streams from the spinning solution, vaporize the solvent, and produce polymeric fibers on the collector. | 02-18-2016 |
20160047075 | SYSTEM AND METHOD FOR AUTOMATING PRODUCTION OF ELECTROSPUN TEXTILE PRODUCTS - A system and method for producing a textile product which includes an insulated enclosure; an electrospinning dispensing system positioned along at least one face of the insulated enclosure; a solution supply system with a solution transport connection to the electrospinning dispensing system; a mold structure; a cyclical mold actuator mechanically coupled to the mold structure; and a charge unit electrically connected to the electrospinning dispensing system and the mold structure. | 02-18-2016 |
20160068999 | Melt Differential Electrospinning Device and Process - A melt differential electrospinning device and process, the melt differential electrospinning device comprising a spinning nozzle ( | 03-10-2016 |
20160081783 | COMPOSITE PROSTHETIC DEVICES - The present disclosure provides composite prosthetic devices comprising two or more layers of electrospun polymers and methods of preparation thereof. In some embodiments, the two or more layers can be porous and in other embodiments, one or more components is nonporous. The composite prosthetic devices can comprise various materials and the properties of the prosthetic devices can be tailored for use in a range of different applications. | 03-24-2016 |
20160096304 | SYSTEMS AND METHODS FOR FACILITATING THE GENERATION OF CORE-SHEATH TAYLOR CONES IN ELECTROSPINNING - Systems and methods for electrospinning of core-sheath fibers are provided. The systems and methods achieve optimization of a shear stress that exists at a fluid boundary between core and sheath polymer solutions, by varying certain parameters of an electrospinning apparatus and/or the solutions used therewith. | 04-07-2016 |
20160130728 | Method of Manufacturing a Bundle of Electrospun Yarn and Manufacturing Equipment for the Same - An equipment of manufacturing a bundle of electrospun yarn has a vortex containing device and a bundles collecting device. The vortex containing device has a feeding end, an exporting end and a vortex generator. The vortex generator is mounted in and communicates with the vortex containing device to form a fluid vortex in the vortex containing device to provide a guiding force. The guiding force draws an electrospun fiber into the feeding end of the vortex containing device. The electrospun fiber is wound to form a bundle of electrospun yarn by the fluid vortex. The bundles collecting device is rotated to collect the bundle of electrospun yarn. | 05-12-2016 |
20160168754 | ELECTROSPINNING APPARATUS AND METHOD FOR PRODUCING MULTI-DIMENSIONAL STRUCTURES AND CORE-SHEATH YARNS | 06-16-2016 |
20190143254 | Method for Preparation and Activation of Super-Hydrophobic Electret Fiber Material for Cleaning PM2.5 | 05-16-2019 |
264466000 | On film, sheet or web | 16 |
20080258351 | EQUIPMENT AND METHOD FOR ELECTROSPINNING - An electrospinning equipment is provided. The electrospinning equipment includes a power supply, a collector and a material supply electrically connected to the power supply facing the collector and having a spinneret and a guide unit coupled to the spinneret and bent toward the collector, and the spinneret is configured at a central portion of the guide unit. | 10-23-2008 |
20080315465 | METHOD OF MANUFACTURING COMPOSITE FILTER MEDIA - A method of making a composite filter media includes, in an exemplary aspect, forming a nonwoven fabric substrate that includes a plurality of bicomponent synthetic fibers by a spunbond process, calendering the nonwoven fabric substrate with embossing calender rolls to form a bond area pattern having a plurality of substantially parallel discontinuous lines of bond area to bond the synthetic bicomponent fibers together to form a nonwoven fabric. The nonwoven fabric having a minimum filtration efficiency of about 50%, measured in accordance with ASHRAE 52.2-1999 test procedure. The method also includes applying a nanofiber layer by electro-blown spinning a polymer solution to form a plurality of nanofibers on at least one side of the nonwoven fabric. The composite filter media having a filtration efficiency of at least about 75%, measured in accordance with ASHRAE 52.2-1999 test procedure. The method further includes corrugating the composite filter media using opposing corrugating rollers at a temperature of about 90° C. to about 140° C. | 12-25-2008 |
20090026662 | HYBRID POLYMER ELECTROLYTE, A LITHIUM SECONDARY BATTERY COMPRISING THE HYBRID POLYMER ELECTROLYTE AND THEIR FABRICATION METHODS - The present invention provides a novel hybrid polymer electrolyte, a lithium secondary battery comprising the hybrid polymer electrolyte polymer and their fabrication methods. More particularly, the present invention provides the hybrid polymer electrolyte comprising superfine fibrous porous polymer matrix with particles having diameter of 1-3000 nm, polymers and lithium salt-dissolved organic electrolyte solutions incorporated into the porous polymer matrix. The hybrid polymer electrolyte has advantages of better adhesion with electrodes, good mechanical strength, better performance at low and high temperatures, better compatibility with organic electrolytes of a lithium secondary battery and it can be applied to the manufacture of lithium secondary batteries. | 01-29-2009 |
20100059907 | FIBER SPINNING PROCESS USING A WEAKLY INTERACTING POLYMER - A fiber spinning process comprising the steps of providing a polymer solution, which comprises at least one weakly interacting polymer dissolved in at least one weakly interacting solvent to a spinneret; issuing the polymer solution in combination with a blowing gas in a direction from at least one spinning nozzle in the spinneret and in the presence of an electric field; forming fibers and collecting the fibers on a collector. | 03-11-2010 |
20100327494 | Electrospun Fibrous Three-Dimensional Scaffolds with Well-Defined Pore Geometry - In accordance with certain embodiments of the present disclosure, a method for fabricating multi-layer fibrous scaffolds with a well-defined pore geometry is provided. The method includes electrospinning generally parallel rows of biodegradable synthetic polymer fibers onto a collector plate, wherein the fibers of each generally parallel row on the collector plate are generally aligned as they are electrospun onto the collector plate. The collector plate is rotated and additional generally parallel rows of biodegradable synthetic polymer fibers are electrospun onto the collector plate, wherein the additional fibers on the collector plate are generally aligned as they are electrospun onto the collector plate and a multi-layer scaffold is formed. The process can be continued to form a multi-layer fibrous scaffold with macropores of well-defined geometry. | 12-30-2010 |
20110156319 | METHOD AND APPARATUS FOR PRODUCING NANOFIBERS - A container having a plurality of orifices in an outer peripheral wall and having a space communicating with the orifices is rotated to extrude an electrically charged raw material liquid containing a polymer material from the space through the orifices by centrifugal force. This allows the electrically charged raw material liquid to form a fibrous material. At this time, the raw material liquid is supplied to the space in which the raw material liquid is filled by a raw material liquid pump so that the raw material liquid is extruded from the orifices at a predetermined pressure. That is, the raw material liquid in the space is pressurized. Also, the shape of the space in the container is set so that the centrifugal force exerted on the raw material liquid is constant. | 06-30-2011 |
20120068384 | NANOFIBROUS MATERIALS AS DRUG, PROTEIN, OR GENETIC RELEASE VEHICLES - The present invention is a bioactive, nanofibrous material construct which is manufactured using a unique electrospinning perfusion methodology. One embodiment provides a nanofibrous biocomposite material formed as a discrete textile fabric from a prepared liquid admixture of (i) a non-biodegradable durable synthetic polymer; (ii) a biologically active agent; and (iii) a liquid organic carrier. These biologically-active agents are chemical compounds which retain their recognized biological activity both before and after becoming non-permanently bound to the formed textile material; and will become subsequently released in-situ as discrete freely mobile agents from the fabric upon uptake of water from the ambient environment. | 03-22-2012 |
20120086155 | METHOD FOR PRODUCING ALIPHATIC POLYESTER FILM - An aliphatic polyester film is obtained by melt-extruding an aliphatic polyester as a film, controlling the entrained air stream between a casting drum and the film while inhibiting the variations of the film edge portion landing points on the casting drum, and subsequently bringing the film into contact with the casting drum over the entire width of the film. | 04-12-2012 |
20120112389 | ELECTROSPINNING MEMBRANE MACHINE IN WARP AND WEFT DIRECTIONS AND APPLICATION PROCESS THEREOF - The present invention relates to an electrospinning device for fabricating a membrane, in particular, to an electrospinning device for fabricating membrane by using spinnerets aligned in machine direction (MD) and transverse direction (TD) in a high-voltage DC electric field, and to method for using the same. In addition to producing a single-layer nanofiber membrane from a polymer composite, the electrospinning device according to the present invention can also conveniently produce a multilayer composite nanofiber membrane from more than one polymer composites. The electrospinning device comprises a control section, an electrospinning section and an ancillary section. The electrospinning section comprises a MD spinnerets set and a TD spinnerets set that are alternately arranged and moves above a membrane collecting device in a to-and-fro scanning manner so as to improve the evenness and strength of the obtained membrane. The high-voltage DC electric field is applied between the MD and TD spinnerets sets and a stainless steel conveyer belt for collecting the membrane. A polymer solution supplied to the MD and TD spinnerets sets is split into nanoflows under the action of the electric field, accumulated on the stainless steel conveyer belt to form a membrane and carried to a collecting roller to be collected. | 05-10-2012 |
20130320596 | MOLTEN PLASTIC FILM PINNING APPARATUS AND METHOD FOR POLYAMIDE OR POLYLACTIC ACID FILM MANUFACTURING PROCESS - This invention relates to a molten plastic film pinning apparatus for polyamide (PA) or polylactic acid (PLA) film manufacturing process. The apparatus includes a die for extruding a molten plastic, a chill roll placed under the die for forming and quenching the molten plastic film to the plastic film, an air knife positioned between the die and the chill roll and above the molten plastic film first contacting the chill roll parallelly along the molten plastic film's width, and an electrostatic pinning electrode placed parallel to the air knife. This invention also relates to a molten plastic film pinning method for polyamide (PA) or polylactic acid (PLA) film manufacturing process. | 12-05-2013 |
20140054828 | ELECTROSPINNING PROCESS FOR MAKING A TEXTILE SUITABLE FOR USE AS A MEDICAL ARTICLE - The present invention is a bioactive, nanofibrous material construct which is manufactured using a unique electrospinning perfusion methodology. One embodiment provides a nanofibrous biocomposite material formed as a discrete textile fabric from a prepared liquid admixture of (i) a non-biodegradable durable synthetic polymer; (ii) a biologically active agent; and (iii) a liquid organic carrier. These biologically-active agents are chemical compounds which retain their recognized biological activity both before and after becoming non-permanently bound to the formed textile material; and will become subsequently released in-situ as discrete freely mobile agents from the fabric upon uptake of water from the ambient environment. | 02-27-2014 |
20160000976 | METHOD FOR ELECTROSPINNING A GRAFT LAYER - A method for making a graft layer is provided. The graft layer has at least two layers with different porosities. The two layers are applied by electrospinning. The parameters of the electrospinning may be varied when applying the first and second layers in order to achieve different porosities of the first and second layers. | 01-07-2016 |
20160047067 | ELECTROSPINNING APPARATUS - The present invention relates to an electrospinning apparatus Capable of: reusing and recycling VOC, which is generated when a spinning solution jetted from the nozzle of a nozzle block in the electrospinning apparatus is laminating on an elongated sheet, and spinning solution which has overflowed without being nanofiberized by condensing and liquefying same and then adding the resulting products to the spinning solution. | 02-18-2016 |
20160089837 | METHOD FOR MAKING FUNCTIONALLY GRADIENT COATINGS BY 3D PRINTING BASED ON ELECTROSTATIC SPINNING AND ELECTROSTATIC SPRAYING - A method for making functionally gradient coatings by 3D printing based on electrostatic spinning and electrostatic spraying is disclosed, which uses a hybrid 3D printing system based on electrostatic spinning and electrostatic spraying including: a first injection pump, a second injection pump, a first nozzle, a second nozzle, a high voltage power supply, a core rod collector, a controller, a motor and a speed-adjusting unit. The first injection pump, the first nozzle, the high voltage power supply, the core rod collector and the controller constitute an electrostatic spinning subsystem. The second injection pump, the second nozzle, the high voltage power supply, the core rod collector and the controller constitute an electrostatic spraying subsystem. The electrostatic spinning subsystem is controlled by the controller to generate a first material coating, and the electrostatic spraying subsystem is controlled by the controller to generate a second material coating. The method can make multiple layers of functional gradient coatings according to individual needs. | 03-31-2016 |
264468000 | Including differential fluid pressure application (e.g., vacuum, etc.) | 2 |
20120274003 | METHOD FOR ENHANCED FIBER BUNDLE DISPERSION WITH A DIVERGENT FIBER DRAW UNIT - A method and associated apparatus for melt extruding a nonwoven web includes providing a plurality of fibers from an extrusion device. The fibers are conveyed through a diverging profile portion of a fiber drawing unit (FDU) that causes the fibers to spread and expand in the machine direction within the FDU. The fibers are then conveyed through a diverging diffusion chamber spaced from the outlet of the FDU to reduce the velocity of the fibers and further spread the fibers in the machine direction. The fibers may be subjected to an applied electrostatic charge in either the diffusion chamber or the FDU. From the outlet of the diffusion chamber, the fibers are laid onto a forming surface as a nonwoven web. | 11-01-2012 |
20160047061 | 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. | 02-18-2016 |