Orifice For Filaments Or Fibers (e.g., Spinneret) Patents (Class 425/72.2)
  • Patent number: 8231370
    Abstract: An apparatus and method for depositing synthetic fibers to form a non-woven web includes guiding the synthetic fibers by a blowing stream through a drawing unit for depositing on a deposit belt. Multiple guidance elements are arranged inside the guidance distance between a blast opening of the drawing unit and the deposit belt, and form a guidance channel above the deposit belt. The guidance elements form a channel opening at a distance from the blast opening of the drawing unit. In order to achieve constant strength in the deposition of the fiber strands, the distance between the outlet of the drawing unit and the channel opening of the guidance channel is larger than half the guidance distance, and the guidance width of an open space formed between the outlet of the drawing unit and the channel opening of the guidance channel is larger than the guidance channel.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: July 31, 2012
    Assignee: Oerlikon Textile GmbH & Co. KG.
    Inventors: Lutz Maas, Henning Rave, Wiley Scott Harris
  • Patent number: 8197735
    Abstract: The configuration of a feedstock material is controlled by bringing it into contact with at least a first gas moving against it at a location with an area and thickness of the feedstock liquid that forms drops or fibers of a selected size. In one embodiment, drops of agricultural input materials are formed for spraying on agricultural fields. In another embodiment, nanofibers of materials such as chitosan or metals are formed. In another embodiment seeds are planted with gel.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: June 12, 2012
    Assignee: Kamterter Products, LLC
    Inventors: John Alvin Eastin, David Vu
  • Publication number: 20120139153
    Abstract: A melt spinning apparatus has an apparatus body, and the apparatus body includes a spinning nozzle through which a molten resin is extruded into a filament, a primary air channel for directing primary airflow to the filament of the molten resin extruded from the spinning nozzle, and a secondary air channel for directing secondary airflow to the filament at a position downstream of the primary air channel. A part, which is closer to the spinning nozzle, of a wall of the secondary air channel that defines an air exit of the secondary air channel is chamfered to straighten the secondary airflow.
    Type: Application
    Filed: November 28, 2011
    Publication date: June 7, 2012
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Mai OYAMADA, Hiroshi KOYAMA
  • Patent number: 8186986
    Abstract: A device for drawing melt-spun filaments for forming a spunbonded fabric includes at least one guide member. The filaments are guided through a slot-shaped nozzle, onto which compressed air is applied, and which conveys the filaments through the drawing nozzle. Guide members are provided on both sides of the slot on the base of the slot-shaped outlet, which cause a uniform structure of the fabric due to their shaping. This is achieved when a guide member has a plurality of notches parallel to the conveying direction, and the opposite guide member has a plurality of bores, which passively connect the space between the guide member with the environment.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: May 29, 2012
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Holger Schöttler, Dimitrios Sapouridis
  • Patent number: 8178015
    Abstract: A process and a device involves melt-spinning and cooling synthetic filaments. Therein, a plurality of filaments is extruded from a polymer melt and, after the extrusion, is guided into a cooling shaft for cooling. Within the cooling shaft cool air is blown, via a blower wall, into the cooling shaft, where, for cooling, the filaments are guided along the blower wall and at a distance from it. In order to obtain cooling adapted to the particular filament titer, the blowing onto the filaments can be set by selecting one of several operating positions, where to change the operating position of the blower wall it is moved in the direction towards the filaments or in the direction away from the filaments.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: May 15, 2012
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Wiley Scott Harris, Fumin Lu, Henning Rave, Holger Schöttler
  • Patent number: 8137088
    Abstract: The invention relates to a device for depositing synthetic fibers to form a non-woven web. The fibers are transported through a take-off nozzle by means of an air stream in the direction of a depositing belt. The device is provided with a guide duct for guiding fibers from the take-off nozzle to the depositing belt, said duct having a mobile retaining flap on one end of a longitudinal side that faces the depositing belt. To obtain a depositing area on the depositing belt that is separate from the environment as the position of the retaining flap is modified, the retaining flap is formed by a support and an elastic sealing lip, which is held in frictional contact with the depositing belt.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: March 20, 2012
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Galliano Boscolo, Hans-Holger Heesch
  • Patent number: 8080197
    Abstract: The invention pertains to a method for manufacturing filaments from an optically anisotropic spinning solution in which the spinning solution is extruded through a spinneret including a spinning field with a plurality of spinning orifices into a coagulation bath through a slot or diaphragm, the edges thereof being formed by plates with upper and lower sides. The upper sides of the plates are defined as the sides having the shortest distance to the spinning field, wherein the line through the center of the spinning field and perpendicular to the upper sides is located a distance (d) from a parallel line through the center of the slot or diaphragm. The projection of the slot or diaphragm has about the same size and shape as the projection of the spinning field. The plane of the upper side of one plate has a shorter distance to the center of the spinning field than the plane of the upper side of the other plate, and the line has a smaller distance to the edge of plate than to edge of plate.
    Type: Grant
    Filed: January 18, 2003
    Date of Patent: December 20, 2011
    Assignee: Teijin Aramid B.V.
    Inventors: Johannes Jacobus Meerman, Wilhelmus Marie Roelofs
  • Publication number: 20110293764
    Abstract: A system for forming a spun bond nonwoven web from extruded polymer filaments includes a spinneret including a plurality of orifices to extrude a plurality of continuous polymeric filaments, and a pressure quench chamber including a top located proximate and below the spinneret and bounded peripherally by surfaces. The quench chamber includes an ingress opening extending substantially across the width of a top of the quench chamber to receive filaments from the spinneret and a chamber exit nozzle extending substantially across the width of a bottom of the quench chamber.
    Type: Application
    Filed: August 10, 2011
    Publication date: December 1, 2011
    Inventor: Perry Hartge
  • Publication number: 20110285053
    Abstract: A melt spinning apparatus includes an apparatus body and a nozzle for extruding melted resin, a primary hot air passage formed around the nozzle, and a secondary hot air passage formed in a zone outside of the primary hot air passage, which are formed in the apparatus body. The primary hot air passage discharges primary hot air onto fibers of the melted resin extruded from the nozzle. The secondary hot air passage discharges secondary hot air to maintain the temperature of the primary hot air. The discharge angle of the secondary hot air from the secondary hot air passage is set in a range of 0° to 50° with respect to the direction of the melted resin extruded from the nozzle. The secondary hot air forms an air curtain that blocks the atmospheric air.
    Type: Application
    Filed: April 27, 2011
    Publication date: November 24, 2011
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Hiroshi KOYAMA, Kenta FUJII
  • Publication number: 20110285065
    Abstract: A melt spinning apparatus includes an apparatus body, a nozzle configured to extrude melted resin in the apparatus body, and a barrel having an air discharge passage arranged around this nozzle to discharge hot air. The discharge passage includes a sloped passage and a parallel passage that extends along the nozzle. At an intersection of imaginary lines extending along the centerlines of the sloped passage, an imaginary merging section is defined. An open end of the nozzle is positioned on the downstream side of the imaginary merging section of the hot air blown diagonally forward toward a periphery of the nozzle. To manufacture a sheet of a nonwoven fabric, the melted resin is discharged from the nozzle and then the hot air swirling diagonally forward is blown toward the periphery of the nozzle. This causes the melted resin to be formed into spiral fibers. Those fibers are blown onto the belt of a conveyor belt apparatus to manufacture a nonwoven fabric sheet.
    Type: Application
    Filed: April 27, 2011
    Publication date: November 24, 2011
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Hiroshi KOYAMA
  • Patent number: 8057205
    Abstract: The invention provides a method for manufacturing spun-bonded nonwoven fabrics that can reduce the diameter of a filament without decreasing productivity and can stably produce nonwoven fabrics, comprising: quenching a multiple number of continuous melt-spun filaments through spinning nozzles with quench air fed to a quenching chamber, drawing the filaments, and depositing the filaments on a moving collector surface, wherein the quench air fed to the quenching chamber is divided into at least 2 streams in vertical direction, and an air velocity of the quench air in the lowermost stream is set higher than that of the 50 quench air in the uppermost stream. The invention also provides an apparatus for manufacturing spun-bonded nonwoven fabrics, wherein quench air fed to the quenching chamber is divided into at least 2 streams in the vertical direction, wherein the velocities of the quench air are independently controllable in the respective streams.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: November 15, 2011
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Minoru Hisada, Kenichi Suzuki
  • Patent number: 8052407
    Abstract: Apparatus and method for producing fibrous materials in which the apparatus includes an electrospinning element configured to electrospin a substance from which the fibers are to be composed by an electric field extraction of the substance from a tip of the electrospinning element, a collector disposed from the electrospinning element and configured to collect the fibers, a chamber enclosing the collector and the electrospinning element, and a control mechanism configured to control a gaseous environment in which the fibers are to be electrospun.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: November 8, 2011
    Assignee: Research Triangle Institute
    Inventors: Anthony L. Andrady, David S. Ensor
  • Patent number: 8029260
    Abstract: An apparatus is disclosed for extruding cellulose fibers. The apparatus includes a first member, a second member and a third member all secured together. Multiple nozzles extend outward from the first member and each is designed to direct an aqueous cellulose solution therethrough. As the aqueous solution is extruded, it is accentuated and accelerated by pressurized gas flowing through the first member and the second member and out through first openings formed in the third member. The pressurized gas at least partially surrounds each nozzle and shelters the molten filaments extruded therefrom. The third member also has multiple second openings formed therethrough which are also connected to a source of pressurized gas. The pressurized gas streams exiting each of the second openings function to keep each of the molten filaments from contacting an adjacent molten filament.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: October 4, 2011
    Assignee: Reifenhauser GmbH & Co. KG Maschinenfabrik
    Inventors: Douglas B. Brown, Jeffrey D. Stark, Carmen A. Granato, Sr., Duane K. Zacharias
  • Patent number: 8029259
    Abstract: An array of nozzles is disclosed for forming multiple cellulose fibers. Each nozzle has a longitudinal central axis and includes a tube with a cross-section having a diameter through which an aqueous solution of cellulose and a solvent can be extruded into a molten filament. A first opening is present which surrounds each of the tubes. The first opening has a cross-section with a diameter, and each of the first openings is capable of emitting a pressurized gas which surrounds one of the extruded molten filaments. At least three second openings are spaced away from each of the first openings. Each of the second openings is capable of emitting a pressurized gas stream essentially parallel to the longitudinal central axis of each of the nozzles, and each of the pressurized gas streams functions to shroud one of the extruded molten filaments.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: October 4, 2011
    Assignee: Reifenhauser GmbH & Co. KG Maschinenfabrik
    Inventors: Douglas B. Brown, Jeffrey D. Stark, Carmen A. Granato, Sr., Duane K. Zacharias
  • Patent number: 8021137
    Abstract: The present invention generally relates to a cooling process and system that can be utilized in the manufacture of flexible elongate extruded materials, such as tubing or jacketed electrical wire and cable. More particularly, the present invention relates to a cooling trough for cooling flexible elongate extruded materials after extrusion. Cooling trough embodiments have a base, a wet cooling chamber above the base, and an air dry chamber above the wet cooling chamber. The base contains a reservoir for collecting and storing a cooling liquid. An extruded material, such as a cable, enters the wet cooling chamber, where the cooling liquid from the reservoir is sprayed onto the material, the material is then passed to the air dry chamber where it is dried.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: September 20, 2011
    Assignee: Cerro Wire & Cable Co., Inc.
    Inventor: Douglas P. Henderson
  • Patent number: 8017066
    Abstract: A method and apparatus for forming nonwoven melt spun webs by spinning a curtain of filaments into a pressurized chamber where they are contacted with pressurized quenching fluid, then using the fluid to draw the filaments through a slot at the bottom of the chamber. The slot is a narrow two dimensional impingement point running the length of the filament curtain where the pressurized quench fluid passes through, escaping to atmosphere. The fluid pressure (potential) energy in the chamber is exchanged for velocity (kinetic) energy at the slot impingement point. The fast moving stream of fluid inside and exiting the slot acts to pull, or draw the filaments through the slot. The fluid and fiber stream is deposited onto a porous collection conveyor belt, forming a fleece web. The invention is more efficient, less complicated, easier to maintain and easier to control than prior systems for melt spinning nonwoven webs.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: September 13, 2011
    Inventor: Perry Hartge
  • Publication number: 20110217405
    Abstract: The invention relates to equipment for producing a non-woven web, comprising a device (107, 108) for driving a filament packet, using an air stream, towards a conveyor (101) and an electrostatic device (117) arranged so as to apply electrostatic forces to the filaments of the driven packet, characterised by a means (801, 804) for removing dust from the driving air stream.
    Type: Application
    Filed: August 28, 2009
    Publication date: September 8, 2011
    Inventor: Jean-Michel Dubus
  • Publication number: 20110130063
    Abstract: Provided are a spinning apparatus capable of stably spinning fibers having a small fiber diameter with a high productivity, an apparatus comprising the same for manufacturing a nonwoven fabric, a process for manufacturing a nonwoven fabric using the nonwoven fabric manufacturing apparatus, and a nonwoven fabric produced by the process. The spinning apparatus of the present invention comprises one or more exits for extruding liquid, which are capable of extruding a spinning liquid, and one or more exits for ejecting gas, which extend linearly and are located upstream of each of the exits for extruding liquid and which are capable of ejecting a gas, wherein a shearing force by the gas and its accompanying airstream can be single-linearly exerted on the spinning liquid extruded. The apparatus of the present invention for manufacturing a nonwoven fabric comprises a fibers collection means as well as the spinning apparatus.
    Type: Application
    Filed: November 24, 2010
    Publication date: June 2, 2011
    Applicant: JAPAN VILENE COMPANY, LTD.
    Inventors: Yasuko MATSUBAYASHI, Masahiro AMAGASA, Yukio KOJIMA, Kenji KIMURA
  • Patent number: 7951313
    Abstract: A spinning apparatus comprising one or more exits for extruding liquid, and an exit for ejecting gas, located upstream of the exits for extruding liquid, wherein the apparatus comprises a columnar hollow for liquid, in which the exit for extruding liquid forms one end of the columnar hollow; the apparatus comprises a columnar hollow for gas having the exit for ejecting gas; a virtual column for liquid, extended from the columnar hollow for liquid, is adjacent to a virtual column for gas, extended from the columnar hollow for gas; the central axis of the columnar hollow for liquid is parallel to the central axis of the columnar hollow for gas; and there exists only one straight line having the shortest distance between an outer boundary of the cross-section of the columnar hollow for gas and an outer boundary of the cross-section of the columnar hollow for liquid, is disclosed.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: May 31, 2011
    Assignee: Japan Vilene Company, Ltd.
    Inventors: Yasuko Matsubayashi, Masahiro Amagasa, Yukio Kojima, Syuichi Murata
  • Publication number: 20110121480
    Abstract: A method for melt spinning, stretching, and winding a multifilament thread to form an FDY-yarn as well as a device for performing the method are presented. Hereby, a plurality of filaments are first extruded from thermoplastic melt, cooled to a temperature below the glass transition temperature of the thermoplastic material, and gathered to form a filament bundle without adding a preparation fluid. The filament bundle is then drawn-off at a speed above 1,500 m/min., heated to have a temperature above the glass transition temperature of the thermoplastic material, and stretched at a drawing speed above 4,000 m/min. Preparation of the filament bundle with a preparation fluid and winding the thread to form a spool is then performed. The device has the preparation device arranged in a zone of the thread course between the drawing device and the winding device, in which the thread has a thread-running speed above 4,000 m/min.
    Type: Application
    Filed: May 22, 2009
    Publication date: May 26, 2011
    Applicant: OERLIKON TEXTILE GMBH & CO. KG
    Inventors: Helmut Weigend, Hansjörg Meise, Detlev Schulz
  • Publication number: 20110121481
    Abstract: In an apparatus for the production of a non-woven web, structure, or article using a spun-bonding process in combination with a forming fabric which is woven having flat CMD yarns, flat MD yarns or both with some or all of such yarns being conductive so as to dissipate static electricity.
    Type: Application
    Filed: January 31, 2011
    Publication date: May 26, 2011
    Inventors: Jean-Louis Monnerie, Pascal Debyser
  • Patent number: 7934917
    Abstract: A spinneret format, an electric-field reversal format and a process for post-treatment of membranes formed from electro-spinning or electro-blowing are provided, including a cleaning method and apparatus for electro-blowing or blowing-assisted electro-spinning technology.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: May 3, 2011
    Assignee: The Research Foundation of State University of New York
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Dufei Fang
  • Patent number: 7931456
    Abstract: An improved electroblowing process is provided for forming a fibrous web of nanofibers wherein polymer stream is issued from a spinning nozzle in a spinneret with the aid of a forwarding gas stream, passes an electrode and a resulting nanofiber web is collected on a collector. The process includes applying a high voltage to the electrode and grounding the spinneret such that an electric field is generated between the spinneret and the electrode of sufficient strength to impart an electrical charge on the polymer as it issues from the spinning nozzle.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: April 26, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Michael Allen Bryner, Jack Eugene Armantrout, Benjamin Scott Johnson
  • Patent number: 7931457
    Abstract: An apparatus for producing sub-micron fibers, and more specifically an apparatus for effecting formation of sub-micron fibers by fibrillation of polymer films, and nonwoven materials and articles incorporating them.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: April 26, 2011
    Assignee: Polymer Group, Inc.
    Inventors: Michael H. Johnson, Timothy Krause, Michael W. Hayes, Rajeev Chhabra, Savas Aydore, Olaf Erik Alexander Isele, Han Xu
  • Publication number: 20110076907
    Abstract: Disclosed is an apparatus, process, and product allowing for the manufacture of non-woven fluoropolymers, perfluoropolymers, and high temperature engineering resin filaments obtained from low melt index polymers. The fibers have continuous structural integrity created by using a heated duct that provides for maintaining an elevated filament temperature during filament draw down. The apparatus allows for entanglement and melt bonding of the fluoropolymers perfluoropolymers, and high temperature engineering resin filaments.
    Type: Application
    Filed: September 25, 2009
    Publication date: March 31, 2011
    Inventors: Charles A. Glew, David Braun, Simon Philip Slack
  • Patent number: 7901195
    Abstract: A fiber making device, fiber making method, and apparatus which incorporates a series of two or more stacked, thin circular die plates, two end plates and two enclosure plates, where all of the plates cooperate to form a chamber having opposite ends and define a first end and a second end. The first end will receive material to be formed into fibers and the second end will receive a fiberizing fluid, although the second end could be used to supply a second fiber forming fluid to form composite fibers. All of the die plates have a central opening to receive fiber forming material, and at least one of the die plates has an outflow edge peripheral to the plate which will define a spinneret orifice, which is in fluid communication with said central opening, and which will allow the flow of material along a radial path through which fibers can be extruded.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: March 8, 2011
    Assignee: SpinDynamics, Inc.
    Inventors: Anthony Fabbricante, Jack S. Fabbricante, Thomas J. Fabbricante
  • Patent number: 7901614
    Abstract: Methods and apparatus for meltblowing utilize an auxiliary manifold to dispense a fluid between an orifice of a die that is expelling polymeric fibers and an exit of a duct that is dispensing a secondary flow of gas onto the fibers. The fluid dispensed from the auxiliary manifold reduces a recirculation zone of the secondary flow between the exit and the orifice that, absent the fluid from the manifold, results in errant fibers that are blown back into the face of the die by the recirculating secondary flow.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: March 8, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: James C. Breister, Andrew W. Chen, William P. Klinzing, Patrick J. Sager, Douglas C. Sundet, Matthew S. Linabery
  • Publication number: 20110037194
    Abstract: A die assembly suitable for spinning filaments and more particularly to a die assembly having a fluid environment around the die assembly's filament exit holes is provided.
    Type: Application
    Filed: August 13, 2010
    Publication date: February 17, 2011
    Inventor: Michael David JAMES
  • Patent number: 7887311
    Abstract: A spinneret format, an electric-field reversal format and a process for post-treatment of membranes formed from electro-spinning or electro-blowing are provided, including a cleaning method and apparatus for electro-blowing or blowing-assisted electro-spinning technology.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: February 15, 2011
    Assignee: The Research Foundation of State University of New York
    Inventors: Benjamin Chu, Benjamin S. Hsaio, Dufei Fang
  • Patent number: 7887728
    Abstract: A spinning pack for dry-wet spinning is provided with a spinneret having not less than 6,000 spinning holes and having an aspect ratio Ra of not less than 2.5 for a spinning hole array of the spinning holes. In a device and method for producing a fiber bundle, a drawing angle of single fibers formed by the single fibers and a spinneret surface of a spinneret is in a range from 87° to 92°, the single fibers being fibers discharged from the outermost spinning holes located in the long side direction of the spinneret and running to a fiber bundle diverting guide provided in a coagulation bath.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: February 15, 2011
    Assignee: Toray Industries, Inc.
    Inventors: Kohei Takatani, Makoto Kibayashi, Koji Matsumoto, Kazuhisa Narusawa
  • Patent number: 7845923
    Abstract: A spinning, drawing and texturing machine for the production of curled threads includes a spinning unit and multiple machine modules associated with the spinning unit. Each of the machine modules has multiple processing assemblies for drawing and curling one of the threads, and a spooling unit for winding the thread. The machine modules positioned next to one another form a longitudinal side of the machine. The processing assemblies and the spooling unit are arranged among each other at one of the machine modules such that a narrow machine partition (T) in a range of <800 mm occurs on the longitudinal side of the machine. The spinning unit has one or more spinnerets and one spinning duct within the machine partition (T) per machine module. The spinnerets are held in rows parallel to the longitudinal side of the machine.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: December 7, 2010
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Friedrich Lennemann, Matthias Schemken, Stefan Kalies
  • Patent number: 7802977
    Abstract: An apparatus for melt spinning and winding up synthetic yarns comprising a spinning appliance, a treating appliance and a windup machine. The treating appliance comprises a runoff godet for guiding the yarns before entry and distribution of the yarns into a plurality of winding stations in the windup machine, the runoff godet being arranged above the windup machine and guiding the yarns in a parallel side by side arrangement on its circumference. The runoff godet is arranged transversely to a winding spindle and above the windup machine, the windup machine comprising a plurality of head yarn guides which are disposed upstream of the winding stations and are arranged in a vertically oriented runup plane.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: September 28, 2010
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Michael Schröter, Helmut Weigend
  • Patent number: 7798795
    Abstract: A method and apparatus for depositing synthetic filaments to form a non-woven web, wherein the filaments are drawn off from a spinneret through a drawing unit in a row-shaped arrangement using a feed fluid, accelerated into a guide channel and blown out as a filament stream toward an advancing deposit belt. The filament stream is deflected immediately before it impacts upon the deposit belt unilaterally in the advancing direction of the deposit belt in such a way that the filaments impact upon the deposit belt at an angle of <90°. For this purpose, a deflecting means is mounted immediately above the deposit belt.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: September 21, 2010
    Inventors: Mathias Stündl, Mathias Gröner-Rothermel
  • Publication number: 20100230851
    Abstract: The invention relates to a process and a device for manufacturing a composite strand formed by combining continuous glass filaments with continuous high-shrinkage organic thermoplastic filaments. According to the invention, the thermoplastic filaments are mingled in the form of a web (10) with a bundle or a web (2) of glass filaments after having been drawn, heated then projected onto a moving support (17) with a speed, during their projection onto the support, greater than the running speed of said support. It also relates to a suitable device for carrying out the aforementioned process.
    Type: Application
    Filed: March 23, 2007
    Publication date: September 16, 2010
    Inventors: Dominique Loubinoux, Bruno Gas
  • Patent number: 7794220
    Abstract: The object of this invention is to make possible the manufacturing of sheath-core type super microfilaments from sheath-core type filaments such as hollow filaments, optical filaments and conjugate filaments continuously and stably by a simple and convenient means without requiring any apparatus of high-accuracy and high-level, characterized in that original filaments delivered from sheath-core type filament supply means are heated by infrared beams and the heated sheath-core type filaments are drawn at 100 times or more by a tension provided by the own weight or under a tension of 1 MPa or less.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: September 14, 2010
    Assignee: University of Yamanashi
    Inventor: Akihiro Suzuki
  • Patent number: 7762801
    Abstract: Apparatus and method for producing fibrous materials in which the apparatus includes an enclosure having an inlet configured to receive a substance from which the fibrous materials are to be composed, a common electrode disposed in the enclosure, and plural extrusion elements provided in a wall of the enclosure opposite the common electrode so as to define between the plural extrusion elements and the common electrode a space in communication with the inlet to receive the substance in the space. In the method, a substance from which the fibrous materials are to be composed is fed to the enclosure having the plural extrusion elements, a common electric field is applied to the extrusion elements in a direction in which the substance is to be extruded, the substance is extruded through the extrusion elements to tips of the extrusion elements, and the substance is electrosprayed from the tips to form the fibrous materials.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: July 27, 2010
    Assignee: Research Triangle Institute
    Inventors: Anthony L. Andrady, David S. Ensor
  • Patent number: 7762800
    Abstract: An apparatus for making a spunbond web has a deposition surface, a spinneret above the surface for producing filaments that move downward along a path toward the surface, and a cooling chamber below the spinneret. Cool process air is supplied to the chamber to cool the filaments as they pass downward through the chamber. A laterally closed stretching unit downstream of the cooling chamber has laterally closed side walls that have portions that diverges downward. A connecting region between the stretching unit and the cooling chamber substantially excludes access of air from outside to the filaments as they pass from the cooling chamber to the stretching unit so that the filaments drop from the stretching unit onto the deposition surface.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: July 27, 2010
    Assignee: Reifenhaeuser GmbH & Co. KG Maschinenfabrik
    Inventors: Hans-Georg Geus, Detlef Frey
  • Publication number: 20100178372
    Abstract: A device for meltblowing of synthetic fibers utilizes an elongated spinneret packet that is held at the bottom side of the spinneret carrier. In order to supply process air the two elongated air tubes extend at the opposite longitudinal sides of the spinneret carrier, which are connected to an air distribution device having an air channel system in the spinneret carrier. In order to avoid thermal stress in the expansion joints between the air distribution device and the spinneret carrier as much as possible, the air distribution devices are embodied by means of multiple distribution segments having an expansion joint between adjacent distribution segments.
    Type: Application
    Filed: January 6, 2010
    Publication date: July 15, 2010
    Applicant: OERLIKON TEXTILE GMBH & CO. KG
    Inventors: Gunter SCHUTT, Nicola MUELLER-REICHAU, Bernhard POTRATZ
  • Patent number: 7740777
    Abstract: A spunbond system for manufacturing a non-woven web of fibers includes a spin beam assembly configured to process and deliver a plurality of polymer streams for extrusion through spinneret orifices. The spin beam assembly includes a plurality of manifold sections within the spin beam assembly, each manifold section including a distribution pipe configured to transfer a respective polymer component to a plurality of piping sections extending within the manifold section and a heat transfer medium that flows within the manifold section and around the piping sections extending into the manifold section so as to maintain the respective polymer component at a selected temperature.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: June 22, 2010
    Assignees: Hills, Inc., Reifenhauser GmbH & Co. Maschinenfabrik
    Inventors: Arnold Wilkie, Hermann Balk
  • Publication number: 20100133717
    Abstract: The invention relates to a method for the production of granulate grains of polymers from thermoplastic polyesters or copolyesters from a polyester melt using an extrusion granulator. The polyester melt is fed to nozzles of the extrusion granulator and then, with draw-in rollers, to the granulation device via an extraction section as extrusions exiting from the nozzle, wherein, e.g., an extrusion extraction speed is set by the draw-in rollers. The invention also relates to an improved extrusion granulator according to the invention having a wave device between the nozzles and the extraction channel, and granulate grains produced according to the method according to the invention.
    Type: Application
    Filed: November 12, 2007
    Publication date: June 3, 2010
    Applicants: AUTOMATIK PLASTICS MACHINERY GMBH, Buehler AG
    Inventors: Jaroslaw Boczon, Andreas Doll, Sven Fenchel, Brent Allan Culbert, Fernando Eusebio, Franziska Morganti
  • Patent number: 7727444
    Abstract: An apparatus includes a spinning nozzle, a fiber drawing device and a water spray device. The spinning nozzle has spinnerets and a spinning solution is filled therein. The spinning solution includes a solvent and a fiber material. The solvent includes N-Methylmorpholine N-Oxide, and the fiber material includes cellulose. The fiber drawing device is disposed under the spinning nozzle and has a gas flow generating device therein for generating a gas flow which is ejected from the top of the fiber drawing device and toward the bottom thereof. The fiber drawing device also has a slit on the top thereof, and the spinning solution from the spinning nozzle would enter the fiber drawing device through the slit. The water spray device is disposed at the slit of the fiber drawing device, and the spinning solution would pass through the water spray device before entering the fiber drawing device.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: June 1, 2010
    Assignee: Taiwan Textile Research Institute
    Inventors: Tzu-Hsiang Huang, Chao-Chun Peng
  • Patent number: 7722347
    Abstract: Apparatus (100, 101, 102) and die cartridge assembly (18, 44, 45, 47) adapted for use with same for producing fibrous material (212). The apparatus (100) comprises a removably attachable die cartridge assembly (18) that adapts to conventional spunmelt equipment. The die cartridge assembly (18) is removably positionable beneath an extrusion body (10) for effecting formation of fibrous material by fibrillation of polymer films. The cartridge assembly (18) includes at least one polymer passage (19) communicating with a molten polymer source (10) for directing molten polymer onto at least one film forming surface (20, 28) defined by the cartridge assembly (18), and also defines at least one gas passage (222, 22, 30) communicating with a gas source (16) for directing pressurized gas (220) against the molten polymer (210) in the form of a film for effecting formation of the fibrous material (212).
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: May 25, 2010
    Assignee: Polymer Group, Inc.
    Inventors: Timothy Krause, Michael H. Johnson, Richard Ferencz
  • Publication number: 20100120314
    Abstract: An apparatus for producing sub-micron fibers, and more specifically an apparatus for effecting formation of sub-micron fibers by fibrillation of polymer films, and nonwoven materials and articles incorporating them.
    Type: Application
    Filed: November 23, 2009
    Publication date: May 13, 2010
    Applicant: POLYMER GROUP, INC.
    Inventors: Michael H. Johnson, Timothy Krause, Michael W. Hayes, Rajeev Chhabra, Savas Aydore, Olaf Erik Alexander Isele, Han Xu
  • Patent number: 7704062
    Abstract: A nonwoven production machine includes a spun-bond tower for extruding filaments and associated apparatus for forming the filaments into a web that is consolidated by water jets, a web that is calendered and then softened by water jets, or a web that is only calendered.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: April 27, 2010
    Assignee: Rieter Perfojet
    Inventors: Frédéric Noelle, André Michalon
  • Patent number: 7690902
    Abstract: Melt blown or spun bond nonwoven webs are formed by flowing fiber-forming material through a die cavity having a substantially uniform residence time and then through a plurality of orifices to form filaments, using air or other fluid to attenuate the filaments into fibers and collecting the attenuated fibers as a nonwoven web. Each die orifice receives a fiber-forming material stream having a similar thermal history. The physical or chemical properties of the nonwoven web fibers such as their average molecular weight and polydispersity can be made more uniform. Wide nonwoven webs can be formed by arranging a plurality of such die cavities in a side-by-side relationship. Thicker or multilayered nonwoven webs can be formed by arranging a plurality of such die cavities atop one another.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: April 6, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Stanley C. Erickson, James C. Breister, Michael G. Schwartz, Patrick J. Sager
  • Patent number: 7687012
    Abstract: A method and apparatus including means for delivery of at least one high speed composite stream of polymer fibers and secondary material. The method and apparatus also includes a movable collection device which intersects in the composite stream of polymer fibers and secondary material and at least one non-contact deflector to redirect at least a portion of the composite stream.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: March 30, 2010
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Susan J. Daniels, Sara J. Schewe, Randall W. Foss, David P. Hunter, Michael A. Schmidt
  • Patent number: 7682142
    Abstract: A device for melt spinning, treating and winding synthetic threads includes a spinning unit, a treatment unit and a winding unit. The spinning unit, the treatment unit and the winding unit are arranged in tiers one above the other and form a plurality of single-thread or multi-thread production positions along the longitudinal side of a machine. To permit a rapid, simple operation, in particular at the start of a process and during interruptions of the process, an operator walkway is located at a height between the treatment device and the winding device.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: March 23, 2010
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Friedrich Lennemann, Werner Fruchting, Claus Matthies
  • Patent number: 7682554
    Abstract: An apparatus for forming a shaped fibrous nonwoven structure including a delivery system adapted to provide a high speed composite stream comprising thermoplastic polymer fibers and a secondary material. The apparatus also includes a movable collection device having a collection surface which intersects the composite stream, and at least one deflector to mechanically redirect at least a portion of the composite stream. Further the deflector moves in synchronization with the movable collection device, such that the composite stream is collected on the collection surface forming a fibrous nonwoven structure having at least one non-linear edge.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: March 23, 2010
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Michael B. Venturino, Seth M. Newlin, Paul E. Olmstead, Susan J. Daniels, Sara J. Schewe
  • Publication number: 20100015266
    Abstract: A device for melt-spinning synthetic filaments includes a spin-die manifold for holding at least one bank of spinnerets and heating device for heating the bank of spinnerets. At least one spinneret with second heating device for heating the spinning pump is allocated to the bank of spinnerets and the spinning pump and bank of spinnerets are interconnected by a melt line. To achieve a user-friendly arrangement for the bank of spinnerets and the spinning pump, the pump and the second heating device are held by a separate pump support which is placed at a distance from the spin-die manifold. This allows the spinning pump to be heated independently of the spin-die manifold.
    Type: Application
    Filed: August 17, 2009
    Publication date: January 21, 2010
    Applicant: OERLIKON TEXTILE GMBH & CO. KG
    Inventors: Günter SCHÜTT, Volker BIRKHOLZ
  • Publication number: 20090317505
    Abstract: A device for drawing melt-spun filaments for forming a spunbonded fabric includes at least one guide member. The filaments are guided through a slot-shaped nozzle, onto which compressed air is applied, and which conveys the filaments through the drawing nozzle. Guide members are provided on both sides of the slot on the base of the slot-shaped outlet, which cause a uniform structure of the fabric due to their shaping. This is achieved when a guide member has a plurality of notches parallel to the conveying direction, and the opposite guide member has a plurality of bores, which passively connect the space between the guide member with the environment.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 24, 2009
    Applicant: Oerlikon Textile GmbH & Co. KG
    Inventors: Holger SCHÖTTLER, Dimitrios SAPOURIDIS