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| Number | Title | Issue Date |
| 7351052 | Apparatus for producing nanofiber utilizing electospinning and nozzle pack for the apparatus The apparatus for producing a nanofiber includes a supply unit (110) for supplying melted polymer for fiber material, a spinning unit (122) having several radiation nozzles (122) to which first voltage having a polar is applied to discharge the ... | 04/01/2008 |
| 7326043 | Apparatus and 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. ... | 02/05/2008 |
| 7291003 | Micromachined spinneret A micromachined spinneret is disclosed which has one or more orifices through which a fiber-forming material can be extruded to form a fiber. Each orifice is surrounded by a concentric annular orifice which allows the fiber to be temporarily or permanently coated wi... | 11/06/2007 |
| 7252493 | Temperature control system to independently maintain separate molten polymer streams at selected temperatures during fiber extrusion A temperature control system for use in a fiber extrusion process includes a number of metering pump assemblies including inlets to receive at least two molten polymer streams from a supply source that is connectable to the system. A pump block disposed proximate th... | 08/07/2007 |
| 7238018 | Method and apparatus for heating plastic extruding die A coil surrounding only the tip of nozzles of a plastic extruding die is provided. By passing a high frequency current through the coil to selectively heat only the tip of the nozzles. Further, in a plastic extruding die in which a high frequency current is passed t... | 07/03/2007 |
| 7179412 | Method and apparatus for producing polymer fibers and fabrics including multiple polymer components in a closed system A closed fiber spinning system includes a spin beam assembly including a plurality of polymer distribution manifolds to independently deliver different polymer component fluid streams to a spin pack and independently maintain those fluid streams at different tempera... | 02/20/2007 |
| 7175407 | Linear flow equalizer for uniform polymer distribution in a spin pack of a meltspinning apparatus A linear flow equalizer for distributing thermoplastic material to a spin pack of a meltspinning apparatus that provides for uniform apportionment of a flow of a flowable thermoplastic material at least vertically and in a cross-machine direction of the spin pack. T... | 02/13/2007 |
| 7172399 | Spin beam An apparatus for spinning melt-spun filament yarns including a spin beam is disclosed. A polymer melt fed to a spin beam is distributed within the spin beam to a plurality of spinning cans mounted on the spin beam. To reduce costs to the manufacturer for ensuring ea... | 02/06/2007 |
| 7168932 | Apparatus for nonwoven fibrous web Disclosed is an apparatus for producing nonwoven fibrous webs. The apparatus comprises an extrusion die, first and second fluid supplies in cooperation with the die, first and second extrusion capillaries, first counterbores allowing fluid communication between firs... | 01/30/2007 |
| 7160091 | Device for the production of multicomponent fibers or filaments, in particular bicomponent fibers or filaments Device for the production of multicomponent fibers or of filaments, in particular bicomponent fibers, whereby a nozzle block assembly is provided. The assembly consists of a middle nozzle block and two outer nozzle blocks. Arranged in the nozzle block assembly are a... | 01/09/2007 |
| RE39399 | Segmented die for applying hot melt adhesives or other polymer melts A segmented die assembly comprises a plurality of side-by-side and separate units. Each die unit, includes a manifold segment and a die module mounted thereon. The manifold segments are interconnected and function to deliver process air and polymer melt to the modul... | 11/14/2006 |
| 7033154 | Lamellar extrusion die apparatus and method A lamellar die apparatus for extruding a heated liquid into single or multiple component filaments. The apparatus includes a plurality of plates each having opposite side faces. At least two of the side faces confront each other and have a liquid passage positioned ... | 04/25/2006 |
| 7033153 | Lamellar meltblowing die apparatus and method A lamellar die apparatus for extruding a heated liquid into filaments and directing air at the filaments. The apparatus includes a plurality of plates each having opposite side faces. At least two of the side faces confront each other and have a liquid passage posit... | 04/25/2006 |
| 7018188 | Apparatus for forming fibers The present invention is directed to an apparatus for forming fibers. One embodiment of the apparatus includes a die assembly having a plurality of nozzles, one or more attenuation medium passages and a cover plate. The cover plate has a cover plate opening into whi... | 03/28/2006 |
| 6926508 | Steam distribution ring for spinning machines A spinneret steam blanketing system for blanketing the face of a spinneret with gas. The system includes a steam distribution ring surrounding a filament array, where the steam distribution ring abuts the spin head and is removably mounted to said spin head. The ste... | 08/09/2005 |
| 6902383 | Apparatus containing cooling and warming devices for the preparation of a polymer solution A novel apparatus for the preparation of a polymer solution includes a stirring device, an extruder connected to the stirring device, a cooling device connected to the extruder, and a warming device connected to the cooling device. The extruder is a fiber or membran... | 06/07/2005 |
| 6858168 | Apparatus and method for forming materials An apparatus and method for forming liquid spinning solution into a solid formed product whereby the solution is passed through at least one tubular passage (17) having walls formed at least partly of semipermeable and/or porous material. The semipermeable an... | 02/22/2005 |
| 6824372 | Fiber-forming apparatus A new fiber-forming method, and apparatus useful for performing the method, are taught in which extruded filaments of fiber-forming material are directed through a processing chamber that is defined by two parallel walls, at least one of which is instantaneously mov... | 11/30/2004 |
| 6737009 | Process and system for producing multicomponent spunbonded nonwoven fabrics A system and process for producing spunbond nonwoven fabric in which two or more polymeric components are separately melted and are separately directed through a distribution plate configured so that the separate molten polymer components combine at a multiplicity o... | 05/18/2004 |
| 6736624 | Spinning device for spinning molten polymers and method for heating the spinning device The invention relates to a spinning device in which liquid polymer is guided through a polymer line with a first heating jacket to a spinning pump with a second heating jacket. From said spinning pump, the polymer is transported through several lines to spinning pac... | 05/18/2004 |
| 6716014 | Apparatus and method for melt spinning a synthetic yarn A melt spinning apparatus for spinning a synthetic yarn, wherein the yarn is formed by combining a plurality of filaments and wound to a package by means of a takeup device downstream of the spinning apparatus. Downstream of the spinneret, an inlet cylinder with a g... | 04/06/2004 |
| 6712592 | Yam melt spinning apparatus A spinning apparatus for melt spinning a synthetic multifilament yarn, which includes a spin head having a plurality of narrowly spaced apart spin packs with spinnerets, through the nozzle bores of which the filaments are extruded. Downstream of the spinnerets, the ... | 03/30/2004 |
| 6709623 | Process of and apparatus for making a nonwoven web Improvements to processes and equipment for the manufacture of nonwoven webs useful in numerous applications including personal care, protective apparel, and industrial products. The fiber and/or filaments used to form the nonwoven fabric are deposited on a forming ... | 03/23/2004 |
| 6705852 | Melt spinning apparatus There is provided a melt spinning apparatus capable of reducing the unevenness of fineness of a yarn. The nozzles of the spinning plate are arranged annular in at least one circle, and a cylindrical filter is disposed at an exit of a cooling wind in the cooling devi... | 03/16/2004 |
| 6705850 | Apparatus for biopolymer coagulation in a uniform flow An apparatus for forming a fiber from a biocompatible biopolymer includes a fiber-formation tube that defines a bore extending generally vertically from an upper end to a lower end. Coagulation fluid enters the tube through a fluid inlet coupled to its upper end and... | 03/16/2004 |
| 6652255 | Cooling system for filament bundles A cooling system for filament bundles, which are spun from polymer melt by at least two spinneret units (1) disposed one beside the other and are drawn off by a draw-off system (17), the filament bundles (3a, 3) being cooled in a three-part shaft (A, B, C... | 11/25/2003 |
| 6616438 | Continuous polymerization and direct fiber spinning and systems for accomplishing same Continuous anionic polymerization and melt-spinning of a polycaprolactam includes forming a reaction mixture by bringing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator into contact with one a... | 09/09/2003 |
| 6595765 | Device for homogenizing, mixing and/or granulating chemical substances The invention concerns a device for homogenizing, mixing and/or granulating chemicals which consist of at least one component, particularly additives, by means of an extruder consisting of several housing segments, at least one worm, a nozzle arrangement ... | 07/22/2003 |
| 6572798 | Apparatus and method for spinning a multifilament yarn An apparatus and method for spinning a synthetic yarn, wherein a heated polymeric melt is extruded through a spinneret and the resulting filaments are combined and wound to a package by means of a take-up device located downstream of the spinneret. A cool... | 06/03/2003 |
| 6551545 | Method and apparatus for melt spinning a multifilament yarn A method and an apparatus for melt spinning a multifilament yarn from a thermoplastic material, wherein a spinneret extrudes the thermoplastic material to strandlike filaments, which are initially in liquid form and then cooled to cause their solidificati... | 04/22/2003 |
| 6524521 | Method of and apparatus for manufacturing longitudinally aligned nonwoven fabric An apparatus for manufacturing a nonwoven fabric has a spinning mechanism having a plurality of nozzles for extruding filaments, and a conveyor for collecting and delivering the extruded filaments. Between the spinning mechanism and the conveyor, there ar... | 02/25/2003 |
| 6514062 | Die for use in an underwater granulating apparatus Two rows of nozzles 4a and 4b whose open ends are formed as orifices 2 of a die are respectively made to communicate with introducing slots 3 of orifice units 6, and jackets 7 for temperature regulation are each disposed between the orifice units 6. First... | 02/04/2003 |
| 6478996 | Method and apparatus for producing a highly oriented yarn A method and an apparatus for producing a highly oriented yarn (HOY) wherein the yarn is withdrawn from the nozzle of a spinneret at a withdrawal speed of at least 6,500 m/min. The filaments forming the yarn are drawn during their solidification, so that ... | 11/12/2002 |
| 6444151 | Apparatus and process for spinning polymeric filaments A melt spinning apparatus for spinning continuous polymeric filaments including a first stage gas inlet chamber adapted to be located below a spinneret and optionally a second stage gas inlet chamber located below the first stage gas inlet chamber. The ga... | 09/03/2002 |
| 6409491 | Extrusion die assembly Disclosed is an improved extrusion die assembly for controlling the flow of polymer in a melt extrusion process. The die assembly is useful for extruding low molecular weight polymer melts.... | 06/25/2002 |
| 6402492 | Apparatus for producing spun bond An apparatus for producing a spun-bond web with a spinneret located above the upper pass of an endless collecting sieve belt below which a suction is generated through an elongated slot extending the full width of that upper pass. Swingable flaps are prov... | 06/11/2002 |
| 6375875 | Diagnostic monitor for carbon fiber processing A method for monitoring characteristics of materials includes placing a material in an application zone, measuring a change in at least one property value of the application zone caused by placing the material in the application zone and relating changes ... | 04/23/2002 |
| 6365091 | Method and device for making industrial continuous filament yarn by entanglement, and polyester continuous filament The invention concerns a method for making industrial continuous filament yarn by entangling a polyester multifilament yarn at high temperature, under yarn traction force less than 140 cN. By means of a tangling cop tube consisting of a body (1) provided ... | 04/02/2002 |
| 6357762 | Sealing element for melt channels The invention provides a sealing element for spinning systems used for spinning polymer melts, wherein the sealing element seals the transition between a polymer melt conducting melt channel of a permanently mounted component and a melt channel of a remov... | 03/19/2002 |
| 6336801 | Die assembly for a meltblowing apparatus The present invention relates to an apparatus, including a die, for forming meltblown material. The die may further include a die tip and a heating element positioned proximate to the die tip to maintain the polymer material extruded from the die tip in a... | 01/08/2002 |
