Orifice For Filaments Or Fibers (e.g., Spinneret) Patents (Class 425/72.2)
  • Patent number: 11873581
    Abstract: The present invention relates to a method for cleaning a spunbonding spinneret for the production of cellulosic spunbonded nonwoven fabric from a solution of cellulose in an aqueous organic solvent by extruding the solution through nozzle holes of the spunbonding spinneret to form filaments and stretching the filaments in the direction of extrusion by means of a gas stream, during which method contaminations containing cellulose will accumulate on the spinneret surface. The method according to the invention comprises the steps of: a) spraying the contamination with an aqueous fluid precipitating the cellulose; and b) detaching and carrying away the contamination by means of the gas stream.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: January 16, 2024
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Ibrahim Sagerer-Foric, Markus Malzner, Matthias Gschwandtner
  • Patent number: 11702780
    Abstract: An apparatus for making a nonwoven fabric from thermoplastic fibers has a spinneret for spinning fibers into continuous filaments and a cooler for cooling the filaments. The cooled filaments are then deposited on a conveyor to form a nonwoven web. A first consolidator surface treats the nonwoven web with a hot fluid or hot air as it is conveyed on the conveyor. A second consolidating downstream of the first consolidator has a dual-belt furnace in which the nonwoven web is passed between two circulating belts or continuous belts for surface treating the nonwoven web with a hot fluid or hot air and for applying surface pressure can be applied to the nonwoven web at the same time.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: July 18, 2023
    Assignees: REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK, MANN + HUMMEL GMBH
    Inventors: Claudio Cinquemani, Detlef Frey, Stefan Orendt, Thomas Pemsel
  • Patent number: 11697897
    Abstract: A spunbonded nonwovens is made by first spinning thermoplastic continuous filaments and emitting them from a spinneret in a direction and then passing the filaments in the direction through a cooling chamber. Meanwhile cooling air is fed from respective manifolds flanking the chamber into the chamber to cool the filaments and the cooling air is guided into the manifolds through respective manifolds and through respective planar homogenizing elements each having a plurality of openings forming a free open surface area constituting 1 to 40% of the total surface area of the respective planar homogenizing element. The cooling air passes from the planar homogenizing element into the cooling chamber through a flow straightener.
    Type: Grant
    Filed: March 15, 2022
    Date of Patent: July 11, 2023
    Assignee: REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK
    Inventors: Michael Nitschke, Martin Neuenhofer, Hans-Georg Geus, Detlef Frey
  • Patent number: 11618974
    Abstract: According to an embodiment, an electrospinning apparatus includes an electrospinning head and a storage case. The electrospinning head includes a nozzle capable of ejecting a material liquid and is movable between a first move position and a second move position. In the storage case, a storage hollow capable of accommodating a nozzle is formed, and an opening to the outside of the storage hollow is formed in the storage case. The storage case causes the nozzle of the electrospinning head located at the first move position to be arranged at a position separate from the storage hollow and causes the nozzle of the electrospinning head located at the second move position to be accommodated inside the storage hollow.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: April 4, 2023
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kanta Sugimoto, Kenichi Ooshiro, Kenya Uchida, Shizuo Kinoshita
  • Patent number: 11608571
    Abstract: Various implementations include a filament that includes three lobes that extend from a central portion of the filament, and the central portion defines an axial void. Each lobe bulges outwardly at its proximal end adjacent the central portion and has edges that form a continuous concave curve toward its distal end relative to an axis A-A that extends through the distal end of the respective lobe and the central portion of the filament. Thus, a width of each lobe at the proximal end thereof is greater than a width of each lobe at or adjacent the distal end, and adjacent edges of adjacent lobes intersect each other at concave proximal ends of the adjacent edges.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: March 21, 2023
    Assignee: Aladdin Manufacturing Corporation
    Inventors: Maarten Meinders, Paul Pustolski
  • Patent number: 11414787
    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: Grant
    Filed: June 29, 2020
    Date of Patent: August 16, 2022
    Assignee: The Procter & Gamble Company
    Inventor: Michael David James
  • Patent number: 10760225
    Abstract: A system and method for producing artificial turf filaments according to one example embodiment includes an artificial turf filament, a first air drawn oven for heating the filament, a roll stand for applying an aqueous liquid to the filament and a second air drawn oven for heating the filament. In multiple embodiments, the filament has a latent helix shape when exposed to manufacturing or ambient heat.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: September 1, 2020
    Inventors: Joseph Claude Price, Reed James Seaton
  • Patent number: 10704166
    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: Grant
    Filed: August 13, 2010
    Date of Patent: July 7, 2020
    Assignee: The Procter & Gamble Company
    Inventor: Michael David James
  • Patent number: 10041188
    Abstract: An apparatus for producing polymeric nanofibers utilizes a meltblown spinneret die having spin holes formed by grooves in plate(s) surface(s) of plate(s) where polymer exits at the plate(s) edge(s). The grooves are smaller than 0.005? wide×0.004? deep and have an L/D at least as large as 20:1. Flow rates of polymer through the apparatus are very low, on the order of 0.01 ghm or less. A meltblown fabric having fibers mostly less than 0.5 microns in diameter is produced.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: August 7, 2018
    Assignee: HILLS, INC.
    Inventors: James E. Brang, Arnold Wilkie, Jeff Scott Haggard
  • Patent number: 9469920
    Abstract: The present invention relates to an electrospinning device. The electrospinning device may apply the force of a supersonic flow acting at a predetermined angle with respect to an electrostatic force on a fiber discharged from an electrospinning nozzle to cause shearing stress on the fiber, thereby providing fibers having a very small diameter and collecting fibers having a finer diameter. Also, the electrospinning device may collect finer and more uniform fibers by adjusting the relative positions of the electrospinning nozzle for discharging the fiber and a gas spray nozzle for spraying a gas.
    Type: Grant
    Filed: June 17, 2012
    Date of Patent: October 18, 2016
    Assignees: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, NORTH CAROLINA STATE UNIVERSITY, BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
    Inventors: Min Wook Lee, Suk Goo Yoon, Alexander L Yarin, Suman Sinha-Ray, Behnam Pourdeyhimi
  • Patent number: 9260807
    Abstract: An apparatus for fabricating three-dimensional nonwoven fabric structure is disclosed, which includes an adjustable frame, a three-dimensional mold, a rotary shaft connecting the three-dimensional mold and the adjustable frame, and a meltblown device. The three-dimensional mold is rotated relative to the adjustable frame. The meltblown device has plural nozzles for spinning a plurality of fibers, wherein the three-dimensional mold is rotated in front of the nozzles to select the fibers, and a three-dimensional nonwoven fabric structure is formed on the three-dimensional mold.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: February 16, 2016
    Assignee: TAIWAN TEXTILE RESEARCH INSTITUTE
    Inventors: Kung-Chin Chang, Chao-Chun Peng, Ming-Chih Kuo, Cheng-Kun Chu
  • Patent number: 9085836
    Abstract: A device is described for producing a fiber product by laying down melt-spun fibers onto a laydown belt. A spinning device is associated with a top side of the laydown belt and a suction-extraction device is associated with the bottom side. A vacuum device has a movable suction chamber which interacts with the spinning device in order to lay down the fibers on the laydown belt. To generate a uniform suction flow in every position of the suction chamber, the suction chamber is formed from a stationary bottom box and a movable top box which are coupled to one another in a pressure-tight manner.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: July 21, 2015
    Assignee: OERLIKON TEXTILE GMBH & CO. KG
    Inventors: Gunter Schutt, Bernhard Potratz
  • Patent number: 8936454
    Abstract: This invention provides a resin extrusion die capable of suppressing die drool generation and contamination of a resin molded form with generated die drool serving as foreign substances. The resin extrusion die includes a cap through which a molten resin is extruded, and a cover that includes a gas outlet for forming a gap around the tip of a discharge nozzle and covers at least part of the cap so as to form a space between the cap and the gas outlet. The gas outlet forms, around the tip of the discharge nozzle, the gap whose maximum width/minimum width ranges from 1.05 to 2.0, thereby changing a gas supplied into the cover and flowing out of the gap to a turbulent flow.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: January 20, 2015
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventor: Toshiyuki Tajiri
  • Publication number: 20140367896
    Abstract: A method is provided for producing solid material filaments or films from a fluid of the material, by extruding the fluid by one or more extrusion openings and by solidifying the material in a precipitation bath. The formed material is guided between the extrusion openings and the precipitation bath by a lateral gas flow. The gas flow is subdivided into a hot partial flow and a cold partial flow. The material is initially brought into contact with the hot partial flow and subsequently with the cold partial flow prior to it being introduced into the precipitation bath. A device is also provided for extruding and forming materials.
    Type: Application
    Filed: September 3, 2012
    Publication date: December 18, 2014
    Applicant: Aurotec GmbH
    Inventors: Stefan Zikeli, Friedrich Ecker
  • Patent number: 8882485
    Abstract: A spinneret bundle for producing fibers from a polymer melt includes an elongated nozzle plate that has a feed channel on an upper face and at least one row of nozzle bores that are arranged next to one another on a lower face. A distributing plate lies on the upper face of the nozzle plate and has a distributing chamber that faces the feed channel and a melt inlet that is connected to the distributing chamber. A perforated plate with a plurality of through-bores is provided between the distributing chamber of the distributing plate and the feed channel of the nozzle plate in order to achieve a redistribution and uniformity of the melt when the melt is introduced into the feed channel.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: November 11, 2014
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Günter Schütt, Volker Birkholz, Nicola Efftunge-Reichau, Sebastian Kohl
  • Patent number: 8870559
    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: Grant
    Filed: November 28, 2011
    Date of Patent: October 28, 2014
    Assignee: Toyota Boshoku Kabushiki Kaisha
    Inventors: Mai Oyamada, Hiroshi Koyama
  • Patent number: 8827671
    Abstract: An extrusion and conditioning apparatus, with an extruder in a conveying position, leads into a conveyor housing connected in a sealed manner to a pneumatic supply line and to a pneumatic conveyor line in which extruded material can be removed pneumatically, by means of superheated steam, via the conveyor line. The extruder can be moved from the conveying position into a bypass position, in which the extruder leads to the exterior of the conveyor housing, having a means for sealing the supply and conveyor lines and the conveyor housing from the surroundings when the extruder is in the conveying and bypass positions.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: September 9, 2014
    Assignee: Mars, Inc.
    Inventor: Siegfried Schmidt
  • Patent number: 8727756
    Abstract: The combined spinning nozzle for the production of nanofibrous or microfibrous materials comprises a thin-walled electrode (1) and a first non-conductive body (2) adjoining the first wall of said thin-walled electrode, said first body having its wall, which faces the thin-walled electrode (1), provided with an array of grooves (5) formed therein, said grooves leading to the distal end (6) of the combined spinning nozzle and having their proximal ends connected to a supply of spinning mixture. The thin-walled electrode (1) and the first non-conductive body (2) may assume either plate-like or cylindrical shapes. The combined spinning nozzle may further comprise a second non-conductive body (4) adjoining a second wall of the thin-walled electrode (1) and directing the air from the proximal end towards the distal end (6) of the nozzle.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: May 20, 2014
    Assignee: Contipro Biotech s.r.o.
    Inventors: Marek Pokorný, Lada Suková, Ji{hacek over (r)}i {hacek over (R)}ebí{hacek over (c)}ek, Vladimír Velebný
  • Publication number: 20140124131
    Abstract: Various methods and systems are provided for fabrication of nanoporous membranes. In one embodiment, among others, a system includes electrode pairs including substantially parallel electrodes, a controllable power supply to control the electrical potential of each of the electrode pairs, and a syringe to eject an electrically charged solution from a needle to form a nanofiber. The orientation of the nanofiber in a nanofiber layer is determined by the electrical potentials of the electrode pairs. In another embodiment, a method includes providing a nanoporous membrane including nanofiber layers between a transferor and a mainmold of a stamp-through-mold (STM) where adjacent nanofiber layers are approximately aligned in different directions. A patterned membrane is sheared from the nanoporous membrane using the transferor and the mainmold of the STM and transferred to a substrate.
    Type: Application
    Filed: May 10, 2012
    Publication date: May 8, 2014
    Inventors: Pitfee Jao, Yong-Kyu Yoon, Gloria Jung-a Kim
  • Publication number: 20140103556
    Abstract: A spinneret, apparatus, and method are provided for making filaments for fibrous nonwoven fabrics with more uniform filament and fabric formation while minimizing filament breaks and hard spot defects in webs and fabrics made therefrom. The spinneret has a spinneret body that has an overall length to hydraulic diameter ratio and defines orifices that extend through the spinneret body, wherein the orifices comprise capillaries that open at a face of the spinneret body for polymer filament extrusion therefrom, wherein the capillaries are arranged in a plurality of different rows at the face of the spinneret body, and wherein the plurality of different rows are arranged into a plurality of different zones at the face of the spinneret body.
    Type: Application
    Filed: October 16, 2012
    Publication date: April 17, 2014
    Applicant: POLYMER GROUP, INC.
    Inventors: Sergio Rafael Diaz de Leon Izquierdo, Marcal Bargallo Alabart, John Arthur Street, John F. Steffen, Ralph A. Moody, III
  • Patent number: 8678799
    Abstract: Included is a spinning cell for a synthetic fiber such as spandex. The spinning cell includes a top closure which reduces or eliminates solvent vapor transfer, where solvent vapor process gas(es) may leave the cell and room air may be introduced into the spinning cell. A bottom closure device may also be included.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: March 25, 2014
    Assignee: Invista North America S.ár.l.
    Inventors: John T. Casey, James B. Elmore, Charles P Deturk, David A. Wilson
  • Publication number: 20140048982
    Abstract: 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.
    Type: Application
    Filed: August 15, 2012
    Publication date: February 20, 2014
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Gregory T. Dee
  • Patent number: 8647090
    Abstract: An injection nozzle for electrospinning including a first nozzle body and a second nozzle body detachably coupled with each other and nozzle members inserted in the first and second nozzle bodies and an electrospinning device using the nozzle. The electrospinning device basically performs air electrospinning wherein a source liquid for fiber is injected together with air while the source liquid for fiber is discharged through the nozzle members, and pure electrospinning without air injection can be efficiently carried out by separating the second nozzle body in such a manner that the lower ends of the nozzle members are exposed for a predetermined length or more. Therefore, according to the present invention, pure electrospinning, air electrospinning or hot air electrospinning may be selectively carried out.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: February 11, 2014
    Assignee: Amogreentech Co., Ltd.
    Inventors: Byunggwang Jo, Inyong Seo, Sangchul Suh, Chan Kim, Cheolhyeon Kim, Seunghoon Lee, Jaehwan Kim
  • Publication number: 20140030370
    Abstract: The combined spinning nozzle for the production of nanofibrous or microfibrous materials according to the invention comprises a thin-walled electrode and a first non-conductive body adjoining the first wall of said thin-walled electrode, said first body having its wall, which faces the thin-walled electrode, provided with an array of grooves formed therein, said grooves leading to the distal end of the combined spinning nozzle and having their proximal ends connected to a supply of spinning mixture. The thin-walled electrode as well as the first non-conductive body may assume either plate-like or cylindrical shapes. The combined spinning nozzle may further comprise the second non-conductive body adjoining the second wall of the thin-walled electrode and directing the air from the proximal end towards the distal end of the nozzle.
    Type: Application
    Filed: January 9, 2013
    Publication date: January 30, 2014
    Inventors: Marek Pokorný, Lada Suková, Jiri Rebícek, Vladimír Velebný
  • Patent number: 8637109
    Abstract: The disclosure relates to a method for coating a target. The method includes providing a target and an electrospinning apparatus. The target comprises a first surface and an opposing second surface. The electrospinning apparatus comprises a mandrel, a mask including an aperture, a reservoir loaded with a solution, and an orifice fluidly coupled to the reservoir. The mandrel is located adjacent the target second surface. The orifice is located at a distance from the target first surface. The mask is located intermediate the orifice and the target first surface. The solution is electrospun through the mask aperture onto the target first surface. In one example the target is an endoluminal prosthesis.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: January 28, 2014
    Assignee: Cook Medical Technologies LLC
    Inventors: David Grewe, Blayne Roeder, Steven Charlebois, Adam Griebel
  • Patent number: 8591213
    Abstract: In an apparatus for the production of a non-woven fabric of filaments, where a plurality of filaments are extruded, cooled, stretched and collected on a mobile support, the means of collecting the filaments include furthermore, a gas permeable mobile support element (28), an aspirator (29) and one or more aspiration ducts (33C-36C), the collecting means being insulated from the environment air.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: November 26, 2013
    Assignee: FARE' S.p.A
    Inventor: Rosaldo Fare′
  • Patent number: 8585388
    Abstract: In an apparatus for the production of a non-woven fabric, a plurality of filaments (11) are extruded by a spinneret (2) into at least two groups spaced from each other to define an area of the cooling chamber without filaments and structures; the filaments are cooled by an air flow (Y) conveyed into the cooling chamber directed towards an intermediate area between said two groups of filaments, said area being located below an area of the spinneret without extrusion holes.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: November 19, 2013
    Assignee: Fare' S.p.A.
    Inventor: Rosaldo Fare'
  • Patent number: 8562326
    Abstract: Provided is an electrospinning apparatus for producing nanofibers, including: a spinning solution supply unit (10); a spinning unit (30) that includes spinning nozzles (32) and a nozzle block (31) in which the spinning nozzles (32) are equidistantly arranged and supported; a nanofiber-collecting unit (40) which collects nanofibers spun from the spinning unit (30); a power supply (50) which forms an electric field in a spinning zone (Z); a process gas supply unit (20) which generates and supplies process gas to control the temperature and humidity of the spinning zone (Z) to a range appropriate for electrospinning conditions for nanofibers; and a process gas laminar flow distribution device (100) which fractionates the process gas supplied from the process gas supply unit (20), into laminar flows within the process gas laminar flow distribution device (100), and distributes the process gas from an upper portion of the spinning unit (30) to the spinning zone (Z).
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: October 22, 2013
    Assignee: Fibrane, Co., Ltd.
    Inventor: Ha Chul Kim
  • Patent number: 8550798
    Abstract: The present invention relates to an injection nozzle for electrospinning including a nozzle body and an air jacket member detachably coupled with each other, and needle members coupled to the bottom surface of the node body via injection holes of the air jacket member. The electrospinning device basically performs air electrospinning for injecting a fiber solution together with air while discharging the fiber solution through the needle members, and the needle members are exposed at the ends thereof by a length long enough to carry out error-free pure electrospinning without air injection if the air jacket member is separated. Therefore, pure electrospinning or air electrospinning can be selectively carried out.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: October 8, 2013
    Assignee: Amogreentech Co., Ltd.
    Inventors: Inyong Seo, Byunggwang Jo, Sangchul Suh, Chan Kim, Cheolhyeon Kim, Seunghoon Lee, Jaehwan Kim
  • Patent number: 8524144
    Abstract: 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.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: September 3, 2013
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: John H. Conrad, Eric E. Lennon, Douglas J. Hulslander, Joerg Hendrix, Detlef Frey
  • Publication number: 20130217290
    Abstract: The invention relates to a spinneret for spinning threads from a spinning mass—in the form of a melt or solution of natural or synthetic origin—comprising a rotationally symmetrical spinneret. The rotationally symmetrical spinneret inner part is surrounded at least partially by a rotationally symmetrical outer part, wherein in the longitudinal direction between the spinneret inner part and outer part an insulating chamber is formed, in which a gas, preferably air, is received in order to form an insulating gas layer. The invention further relates to a spinning device for spinning threads from a spinning mass, comprising a spinneret part and a gas nozzle part arranged at a distance from the spinneret part. A plurality of spinnerets according to the invention are inserted in the spinneret part and project from the spinneret part, facing the gas nozzle part, and the gas nozzle part comprises a plurality of gas nozzles associated with the spinnerets.
    Type: Application
    Filed: May 4, 2011
    Publication date: August 22, 2013
    Inventor: Luder Gerking
  • Patent number: 8512626
    Abstract: Processes for producing nonwoven web products containing sub-micron fibers are provided, and more specifically processes for producing nonwoven web products having sub-micron fibers formed by fibrillation of polymer films are provided.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: August 20, 2013
    Assignee: Polymer Group, Inc.
    Inventors: Michael H. Johnson, Timothy Krause, Michael W. Hayes, Rajeev Chhabra, Savas Aydore, Olaf Erik Alexander Isele, Han Xu
  • Patent number: 8496459
    Abstract: An apparatus is configured to produce a spunbonded fabric. In order to achieve an airiness of the spunbonded fabric and ready adaptability to process parameters which are to be changed, a spinning beam together with a blowing apparatus is configured to be pivotable in a pivoting unit. A relatively high airiness is achieved by the filaments running obliquely onto the fabric belt below the spinning beam. Rotary leadthroughs or elastic feed lines to the spinning beam make the slight pivoting possible.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: July 30, 2013
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventor: Günter Schütt
  • Publication number: 20130189892
    Abstract: The apparatus (1) is used for producing melt-blown fibres (MF). It comprises a die head (104) with several spinning orifices, means (100, 101,102, 103) for extruding at least one melted polymeric material through the spinning orifices of the die head (104) in the form of meltblown filaments (f), and means (104a,104b) for blowing a hot primary gas flow (F1) towards the outlet of the die head (104) in order to draw and attenuate the polymeric filaments (f) at the outlet of the die head, and a drawing unit (105) that is positioned below the die head (104), and that is adapted to create an additional gas flow (F3) that is oriented downstream to further draw and attenuate the meltblown filaments (f).
    Type: Application
    Filed: August 10, 2011
    Publication date: July 25, 2013
    Applicant: BOMA ENGINEERING SRL
    Inventor: Galliano Boscolo
  • Patent number: 8490283
    Abstract: A method of manufacturing a hollow fiber spinning nozzle in which supply bores and a nozzle structure connected to these and having a mass discharge opening and a needle with a coagulation agent bore are formed in a base body. At least two plate-shaped bodies structured by means of micro-structure technology are joined together to form the base body.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: July 23, 2013
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Torsten Keller, Jens-Holger Stahl
  • Patent number: 8469686
    Abstract: The invention relates to an apparatus for treating a multifilament thread in a melt-spinning process, wherein a treatment channel is formed between a housing plate and an impact plate. The housing plate has a nozzle bore which opens into the treatment channel and is connected to a compressed-air connection. Together with the housing plate, the impact plate forms an inlet opening and an outlet opening at both ends of the treatment channel. In order to check the swirling effects which are produced on the thread by the eddying within the treatment channel, according to the invention the impact plate has a thread guiding element in the part piece of the treatment channel between the nozzle bore and the inlet opening, which thread guiding element is configured so as to protrude into the treatment channel in order to deflect the thread.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: June 25, 2013
    Assignee: Oerlikon Textile Components GmbH
    Inventors: Mathias Stündl, Thomas Brandenstein
  • Publication number: 20130122773
    Abstract: Systems for producing bulked webs and/or nonwoven materials may include at least one extruder having a plurality of nozzles and a master air jet in communication with at least one extruder to receive a plurality of polymer melt filaments from at least one extruder to form a bulked web. Producing bulked webs may include at least the steps of forming a plurality of polymer melt filaments; passing the plurality of polymer melt filaments through a master air jet thereby forming a bulked web; and collecting the bulked web.
    Type: Application
    Filed: November 16, 2011
    Publication date: May 16, 2013
    Inventors: Sanjay Wahal, Edward J. Clark, Randall Skattum, Jeffrey Scott Conley
  • Patent number: 8408889
    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: Grant
    Filed: January 6, 2010
    Date of Patent: April 2, 2013
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Gunter Schutt, Nicola Mueller-Reichau, Bernhard Potratz
  • Patent number: 8398389
    Abstract: The invention relates to a method and a device for producing a crimped composite thread, wherein the inventive method consists in extruding, cooling and in drawing several yarns in the form of a plurality of strand filaments and in jointly crimping them in order to obtain a crimped composite thread. The aim of said invention is to make it possible to pre-treat the threads in a manner adaptable to each treatment step. The aim is attained by that at least one multi-treaded yarn is whirl-tangled many times during several operations prior to crimping. For this purpose, a whirl-tangling device provided with a plurality of whirl-tangling units following each other in a direction of the yarn displacement is used.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: March 19, 2013
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventor: Mathias Stündl
  • Publication number: 20130040140
    Abstract: Provided herein are gas and/or temperature assisted electrospinning apparatus, processes, components and polymer nanofibers.
    Type: Application
    Filed: February 15, 2011
    Publication date: February 14, 2013
    Applicant: Cornell University
    Inventors: Yong L. Joo, Daehwan Cho, Eduard Zhmayev
  • Patent number: 8361365
    Abstract: A process for electroblowing a multiple layered sheet using multiple spinning beams to produce different component webs wherein the sheet doesn't stick to the forming screen and has improved web stability.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: January 29, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Joseph Brian Hovanec, Michael John Moore, Sr.
  • Patent number: 8348652
    Abstract: An apparatus for manufacturing nonwoven fabric including a spinning nozzle, a fiber extension device, a receiver device and a sprinkler is provided. The spinning nozzle is filled with a spinning solution and has a plurality of spinners, where each of the spinners includes a spinning port and a main gas port surrounding the spinning port. The fiber extension device is disposed under the spinning nozzle and includes at least one secondary gas supply device. The secondary gas supply device has an arc gas distribution portion, such that the direction of gas ejected from the secondary gas supply device is the same as the direction of gas ejected from the main gas port. The receiver device is disposed under the fiber extension device. The sprinkler is disposed above the fiber extension device or the receiver device.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: January 8, 2013
    Assignee: Taiwan Textile Research Institute
    Inventor: Tzu-Hsiang Huang
  • Patent number: 8342831
    Abstract: An electrospinning apparatus for spinning polymer fibers from a fluid delivered by a jet supply device, which apparatus comprises at least one collector of a plurality of collectors in electrical communication with an electrode of the jet supply device. Collectors are insulated from each other. At least one collector comprises a stretcher adapted to stretch polymer fibers. The stretcher is an integral part of at least one collector. A controller controls sequence and time duration at which collectors are in electrical communication with the electrode of the jet supply device creating a non-woven polymer fabric or weaving polymer fibers into a fabric. The electrospinning apparatus comprises a rotator adapted to rotate the stretcher.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: January 1, 2013
    Inventors: Victor Barinov, Kalle Levon
  • Patent number: 8287268
    Abstract: A device for producing a high density compact livestock feed from a loose granular material according to various embodiment can include a source for supplying a loose granular material to be treated. A series of successive treatment zones comprises a heating zone, a compression zone, and a cooling zone. The heating zone comprises at least one heater and at least one screw compression dryer configured to receive the loose granular material to be treated for drying. Rotation of the screw transfers the treated material to the compression zone. The compression zone comprises a compression chamber for compacting the treated material to form a high density compact body. The treated material is pressed through the compression chamber while a two-dimensional cross-section compression is applied to the treated material. The cooling zone comprises a cooling unit for cooling the high density compact body received from the compression zone.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: October 16, 2012
    Inventor: Michael R. Thomas
  • Publication number: 20120256357
    Abstract: An apparatus for producing meltblown webs includes a meltblowing die having a plurality of filament outlets, a collector for receiving filaments of polymeric material expelled from the filament outlets, and a first Coanda effect device positioned adjacent to the path of the filaments adjacent to the last filament outlet at an end of the meltblowing die. Methods of forming meltblown webs using such an apparatus are also disclosed.
    Type: Application
    Filed: April 6, 2012
    Publication date: October 11, 2012
    Inventors: William P. Klinzing, Andrew W. Chen, James C. Breister, Patrick J. Sager
  • Patent number: 8262964
    Abstract: An alloy, characterized in that it contains the following elements (the proportions being indicated in percentages by weight of the alloy): Cr: ?23 to 34% Ti: 0.2 to 5% Ta: 0.5 to 7% C: 0.2 to 1.2% Ni: less than 5% Fe: less than 3% Si: less than 1% Mn: less than 0.5%, the balance consisting of cobalt and inevitable impurities. An article for the manufacture of mineral wool, especially fiberizing spinner, made of such an alloy.
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: September 11, 2012
    Assignees: Saint-Gobain Isover, Saint-Gobain Seva
    Inventors: Jean-Luc Bernard, Patrice Berthod, Ludovic Hericher, Christophe Liebaut, Sylvain Michon
  • Patent number: 8241024
    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: Grant
    Filed: August 10, 2011
    Date of Patent: August 14, 2012
    Inventor: Perry Hartge
  • 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