Open End Spinning Patents (Class 57/400)
  • Patent number: 7855161
    Abstract: The purpose of the present invention is to provide a photocatalytic fiber which excels in durability, and decomposition ability against harmful components and can be mass-produced at low cost, a fabric using the fiber, and a fabric product using the fabric. The photocatalytic fiber of the present invention contains a photocatalyst being attached to the fiber. The fiber is preferably having an aspect of forming a thread to which the photocatalyst being attached by spinning after dipping the fiber in a solution at least containing the photocatalyst, an aspect of forming the thread to which the photocatalyst being attached by dipping the fiber in the solution containing at least the photocatalyst after spinning, and an aspect wherein the photocatalyst is a photocatalytic apatite. The fabric of the present invention is characterized by using the photocatalytic fiber. The fabric product of the present invention is characterized by using the fabric.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: December 21, 2010
    Assignee: Fujitsu Limited
    Inventors: Noriyasu Aso, Masato Wakamura
  • Publication number: 20100154379
    Abstract: Clothing ring (27) for an opening roller (21) of an open-end spinning device (1), comprising teeth (38) which are formed by at least one groove (39) incorporated in the peripheral face of a basic body (45) and running in the peripheral direction, and a plurality of indents (40) arranged substantially in the axial direction. An axial separation spacing (t) of the teeth (38) is predetermined by the groove (39) and is significantly smaller than the height (H) of the teeth (38). The teeth (38) have tooth flanks (42) which are continuously concavely curved into the groove (39).
    Type: Application
    Filed: January 13, 2007
    Publication date: June 24, 2010
    Applicant: Oerlikon Textile GmbH & Co. KG
    Inventors: Heinz-Georg Wassenhoven, Wolfgang Meier, Lothar Winzen, Brigitte Riede
  • Publication number: 20090173055
    Abstract: A composite polyester and cotton yarn is formed by blending polyester fibers with cotton fibers which have been regenerated from waste cotton material such as trimmings and cuttings from the apparel manufacturing industry. The fibers are cleaned and blended, then carded to align the fibers into strands. Depending on the size and texture of the desired yarn, the fibers are stretched and drawn into slivers prior to spinning to join the fibers together. The polyester fibers are preferably recycled polyethylene terephthalate fibers which are up to three time longer than the regenerated cotton fibers, so that the polyethylene terephthalate fibers overlap and braid onto the regenerated cotton fibers during spinning. The resultant yarn is stronger and more absorbent than yarns made solely out of regenerated cotton fibers. The yarn is suitable for producing woven or knit fabric for the production of colorful and functional clothing and home textiles without the need for further bleaching or dyeing.
    Type: Application
    Filed: September 23, 2008
    Publication date: July 9, 2009
    Inventor: Scott Silver
  • Publication number: 20090053957
    Abstract: The invention concerns a flame-resistant spun staple yarns and fabrics and garments comprising these yarns and methods of making the same. The yarns have 25 to 80 parts by weight of a polymeric staple fiber containing a polymer or copolymer derived from a monomer selected from the group consisting of 4,4?diaminodiphenyl sulfone, 3,3?diaminodiphenyl sulfone, and mixtures thereof; and 20 to 75 parts by weight of a modacrylic fiber, based on 100 parts by weight of the polymeric fiber and the modacrylic fiber in the yarn.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 26, 2009
    Inventors: Reiyao Zhu, Debbie Guckert
  • Publication number: 20090053956
    Abstract: The invention concerns a flame-resistant spun staple yarns and fabrics and garments comprising these yarns and methods of making the same. The yarns have at least 25 parts by weight of a polymeric staple fiber containing a polymer or copolymer derived from a monomer selected from the group consisting of 4,4?diaminodiphenyl sulfone, 3,3?diaminodiphenyl sulfone, and mixtures thereof; 2 to 15 parts by weight of a fiber having low thermal shrinkage; 1 to 5 parts by weight of an antistatic fiber; and the remainder being flame resistant fibers having a limiting oxygen index of 21 or greater, based on 100 total parts by weight of the polymeric fiber, the low thermal shrinkage fiber, the antistatic fiber, and the flame resistant fibers in the yarn.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 26, 2009
    Inventors: Reiyao Zhu, Vlodek Gabara
  • Publication number: 20090053955
    Abstract: This invention relates to a flame-resistant spun staple yarns and fabrics and garments comprising these yarns and methods of making the same. The yarns have 50 to 95 parts by weight of a polymeric staple fiber containing a structure derived from a monomer selected from the group consisting of 4,4?diaminodiphenyl sulfone, 3,3?diaminodiphenyl sulfone, and mixtures thereof; and 5 to 50 parts by weight of a polyoxadiazole fiber or greater, based on the total amount of the polymeric fiber and the polyoxadiazole fiber in the yarn.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 26, 2009
    Inventors: Reiyao Zhu, Vlodek Gabara
  • Publication number: 20090053954
    Abstract: This invention relates to a flame-resistant spun staple yarns and fabrics and garments comprising these yarns and methods of making the same. The yarns have 50 to 95 parts by weight of a polymeric staple fiber containing a structure derived from a monomer selected from the group consisting of 4,4?diaminodiphenyl sulfone, 3,3?diaminodiphenyl sulfone, and mixtures thereof; and 5 to 50 parts by weight of a high modulus staple fiber having a tensile modulus of 200 grams per denier (180 grams per dtex) or greater or greater, based on 100 parts by weight of the polymeric fiber and the high modulus fiber in the yarn.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 26, 2009
    Inventors: Reiyao Zhu, Vlodek Gabara
  • Patent number: 7225605
    Abstract: The invention relates to textile machines with several spinning places, whereby each spinning place comprises a can feeding means, a spinning unit, and winding unit. The invention is based on the task to design the spinning places in such a manner, to minimize the downtimes due to failures of machine components, or during re-fitting. According to the invention, such a spinning place is furnished with modularly structured and exchangeable spinning units and or winding units.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: June 5, 2007
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Olivier Wüst, Herbert Stalder
  • Patent number: 7059110
    Abstract: A device for the manufacture of a spun thread from a fiber sliver includes a fiber conveying channel with a fiber guidance surface. A yarn guidance channel includes an inlet mouth aperture disposed such that the fiber guidance surface guides fibers to the inlet mouth aperture. A fluid generating device creates eddy currents around the inlet mouth aperture to incorporate individual fibers into an end of a yarn being formed in the yarn guidance channel. The fiber guidance surface includes a fiber delivery edge having a shape and disposed relative to the inlet mouth aperture such that the fibers are guided over the delivery edge and conveyed to the inlet mouth aperture in an aligned generally flat planar formation.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: June 13, 2006
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Peter Anderegg, Herbert Stalder
  • Patent number: 7043894
    Abstract: For an air spinning frame, reluctance motors are provided for each spinning place to drive the pairs of rollers of the drafting unit, the drawing-off means, and the friction roller. Thereby, for the run-up of a spinning place, e.g., after a thread break, a specific frequency converter is provided. After reaching the stationary operating speed, a switch over onto a further frequency converter takes place, at which time, the corresponding reluctance motors of the other spinning places are driven in parallel. By the use of reluctance motors it can be done without a complex speed regulation means. A specific dimensioning of the reluctance motors permits a very fast run-up and a particularly good efficiency during the stationary operation.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: May 16, 2006
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Oliver Wuest, Wolf Horst
  • Patent number: 6928803
    Abstract: The invention relates to a device for the production of a spun thread from a staple fiber strand by means of air spin method. The fiber guiding element according to the invention includes a fiber conveying channel with a fiber guiding surface, whereby the fiber guiding surface ends at a fiber presenting edge and leads the fibers of the staple strand in the form of an essentially flat arrangement lying next to each other. The fiber-guiding surface is configured in such a manner that it includes a diverting point which causes a deviation of the staple fiber strand, where the deviation is being provided in such a manner that the free fiber ends of the fibers within the staple fiber protrude from the staple fiber strand.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: August 16, 2005
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Herbert Stalder, Peter Anderegg
  • Patent number: 6904745
    Abstract: Thread-guiding device for collecting spun yarns on bobbins, particularly for open-end spinning frames, constituted by a common thread-guiding rod which carries the thread-guides for the spinning stations, said rod being operated in alternative movement in front of the bobbins being formed by a linear electric motor driven by the control unit of the spinning frame in its alternate backward and forward movement as regards instantaneous speed, amplitude of excursion, and axial coordinates of the ends of the travel of the thread-guiding rod.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: June 14, 2005
    Assignee: Savio Macchine Tessili S.p.A
    Inventors: Roberto Badiali, Vittorio Colussi, Franco Siega Vignut
  • Patent number: 6895736
    Abstract: Thread-guiding device for collecting spun yarns on bobbins, particularly for open-end spinning frames, constituted by a common thread-guiding rod which carries the thread-guides for the spinning units, driven in alternate movement in front of the bobbins being formed by the motion of a driving means controlled in turn by a motor capable of alternate rotation and controlled by the control unit of the spinning frame in its alternate clockwise/counterclockwise movement as regards instantaneous speed, amplitude of angular excursion, angular coordinates of the ends of its travel.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: May 24, 2005
    Assignee: Savio Macchine Tessili S.p.A.
    Inventors: Roberto Badiali, Vittorio Colussi, Franco Siega Vignut
  • Patent number: 6880322
    Abstract: An exchangeable insert is proposed as auxiliary equipment for a housing of a disintegrating apparatus of an open-end spinning apparatus. The insert is adaptable, so that the disintegrator roll housing can be made to conform to various spinning conditions. In a partial zone, in accord with this proposition, the insert replaces a circumferential wall of the disintegrator roll housing, wherein the insert extends itself into to a zone of a contamination separation opening of the disintegrator roll housing. Its extension in the axial direction is so chosen, that it, at least partially, forms a portion of the circumferential wall of the disintegrator in the area of the contamination separation opening.
    Type: Grant
    Filed: October 11, 2003
    Date of Patent: April 19, 2005
    Assignee: Rieter Ingolstadt Spinneremaschbau. AG
    Inventor: Albert Hirsch
  • Patent number: 6865876
    Abstract: A generally cylindrical opening roller unit of an open-end spinning device includes a unitary ring body having card clothing formed of at least one helical groove formed in the ring body, at least one helical ridge between courses of the groove, and saw teeth defined by transverse cuts on the ridge. The roller unit also includes an integrated annular collar that is at least codiametric with the teeth in order to protect the teeth. An integral transition area between the card clothing and the annular collars eliminates the problem of a tooth gap.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: March 15, 2005
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Claus-Dieter Landolt, Heinz-Georg Wassenhoven
  • Patent number: 6820407
    Abstract: An opening arrangement for an open-end spinning device with a rotating opening roller having opening elements stationarily arranged on its circumference for opening a delivered sliver into individual fibers and for combing out the fibers at a comb-out point. The opening roller has a mechanical stripping arrangement that rotates along with it. The stripping arrangement includes ejectors that are pivotably fastened on the opening roller. Each ejector is arranged between the opening elements and extends over the opening roller transversely in relation to the direction of rotation. The ejector strips combed-out fibers off the opening elements and improves the opening of the opening roller as well as the transfer of the fibers from the opening roller. The opening arrangement is advantageously employed with an open-end spinning frame.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: November 23, 2004
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Helmut Feuerlohn, Thomas Weide
  • Publication number: 20040226278
    Abstract: The invention relates to textile machines with several spinning places, whereby each spinning place comprises a can feeding means (2), a spinning unit (3) and winding up unit (4). The invention is based on the task to design the spinning places in such a manner, to minimize downtimes due to failures of machine components or during re-fitting. According to the invention such a spinning place is furnished with modular structured and exchangeable spinning units (3) and/or winding up units (4).
    Type: Application
    Filed: October 30, 2003
    Publication date: November 18, 2004
    Applicant: MASCHINENFABRIK RIETER AG
    Inventors: Olivier Wust, Herbert Stalder
  • Publication number: 20040221568
    Abstract: In an arrangement for application in open-end rotor spinning, an opening roller is housed in a swivel housing. The swivel housing can, together with the assembled opening roller, be removed from the arrangement for open-end rotor spinning when the machine is in operation. The opening roller, due to its mass, continues to rotate after it has been separated from the tangential belt which drives it. A locking device is provided which prevents the removal of the swivel housing when the opening roller is rotating. This results in the opening roller being at a standstill when the swivel housing is removed. The risk of injury caused by a still rotating opening roller is eliminated.
    Type: Application
    Filed: February 23, 2004
    Publication date: November 11, 2004
    Inventor: Gerd Stahlecker
  • Patent number: 6796116
    Abstract: An open-end spinning device with an opening device for opening continuously supplied sliver material by means of a rapidly running opening cylinder, which opening device is arranged in front of a sliver spreading device (78) with cooperating pairs of spreading cylinders. The spreading cylinders (79, 80, 81, 82) comprise flanges that engage into recesses of the opposing spreading cylinder. The spacing between the particular cooperating spreading cylinders (79, 80, 81, 82) can be periodically varied. An unobjectionable opening process with a low speed of the opening cylinder and with a widened opening cylinder can be achieved with the sliver spreading device (78) of the invention which process is associated with a high-precision dosing and high yarn uniformity.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: September 28, 2004
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Hans Raasch
  • Patent number: 6792744
    Abstract: A spinning device for producing a spun yarn by a circulating air flow in a housing has an adjustment device (17) for controlling the angular position of the fiber ends wrapped around a spindle head, and in turn, the angular position of the fibers wrapped around the produced yarn, by adjusting a linear component of an air flow into the spinning device as a function of the yarn withdrawal speed, whereby a yarn is produced of a required yarn strength even during a spinning start phase in the process of making the spun yarn.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: September 21, 2004
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Helmut Feuerlohn, Thomas Weide
  • Patent number: 6789382
    Abstract: An apparatus for producing yarn spun from a loose fibre array using a vortex flow includes a fibre supply duct having an outlet opening. A vortex chamber in communication with the outlet opening is also provided. A yarn take-off duct is present with an inlet opening in communication with the vortex chamber. The vortex chamber is also in communication with an exhaust duct. A wall that defines at least a portion of the vortex chamber is present and has an opening disposed therethrough allowing for communication between the exhaust duct and the vortex chamber.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: September 14, 2004
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Herbert Stalder, Peter Anderegg
  • Patent number: 6745553
    Abstract: An air-spinning arrangement has an opening device having a feed device and an opening roller for opening a sliver into individual fibers. A perforated removal roller receives the opened fibers from the opening roller in the circumferential direction. A conveyor belt conveys the fibers from the removal roller to a nip with a following air-spin nozzle for forming a yarn. The conveyor belt is arranged axially-parallel with the removal roller. A sufficiently close spacing of the conveyor belt from the removal roller is selected such that the fibers conveyed to the removal roller can be picked up by mechanical contact, and the conveyor belt is driven such that it deflects the fibers by approximately 90° and conveys them to the combing location. The air-spinning arrangement allows the formation of a fiber structure that is well suited to the air-spinning process.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: June 8, 2004
    Assignee: W. Schlafhorst AG & Company
    Inventor: Hans Raasch
  • Patent number: 6705072
    Abstract: The invention relates to a spinning device for the production of a spun thread from a fiber bundle, including a nozzle part with an upper nozzle part and a lower nozzle part. Likewise, a spindle is included with an upper part and a lower part. In order to be able to carry out cleaning work between an edge of a fiber guide surface opposite an intake mouth of the spindle, or, at the start of the spinning, in order to be able to guide a yarn end through a yarn guide channel of the spindle onto the fiber guide surface, the upper nozzle part is capable of being raised or can be pivoted. In this situation, the lower nozzle part may remain stationary.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: March 16, 2004
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Peter Anderegg, Robert Wehrli
  • Publication number: 20040025487
    Abstract: In what is referred to as an air vortex spinning method, fibres are dispersed by a dispersion roller (5) into individual fibres, and conveyed by means of a suction roller (9) against a fibre conveying channel (15), from which the fibres are conducted against the mouth of a yarn channel of a hollow spindle (13). In this situation, the front ends of the fibres are taken up in the yarn channel (14), while the rear ends are acquired by a rotating air flow R and rotated around the mouth area of the spindle or yarn channel, so that a yarn is formed which exhibits at least a surface which displays a character similar to a ring-spun yarn.
    Type: Application
    Filed: July 2, 2003
    Publication date: February 12, 2004
    Inventor: Peter Anderegg
  • Publication number: 20040025488
    Abstract: The invention relates to a spinning device which according to the invention with FIG. 2 differs from the prior art of FIG. 1. In the prior art, the fibres delivered through a fibre conveying channel (13) (compaction due to slight twisting) are guided around the tip of a needle (5) into a yarn guidance channel of a spindle (6) and thereby compacted, whereby this guidance takes place as a result of an air flow created through the nozzles (3). The tip of the needle (5) has the purpose, on the one hand, of guiding the fibres and, on the other, of avoiding a false twist having a reverse effect back through the fibre conveying channel as far as, for example, a clamping gap of a pair of delivery rollers due to the rotation of the fibres, since such a false twist would at least interfere with the formation of the yarn, if not preventing it altogether.
    Type: Application
    Filed: September 5, 2003
    Publication date: February 12, 2004
    Inventors: Peter Anderegg, Herbert Stalder
  • Publication number: 20040016223
    Abstract: The application relates to a device for air spinning, i.e. for the manufacture of a spun thread (10) from a staple sliver (1, 24). The device contains in particular a fibre guide element (3, 22), a fibre conveying channel (4), and an eddy chamber housing (15) attached to the fibre guide element (3, 22). The eddy chamber housing (15) contains in its turn a spindle (7) arranged at a distance interval from the fibre guide element (3, 22), with a yarn guide channel (8). In addition, the eddy chamber housing (15) contains a fluid device with at least one jet nozzle (13.1) for the production of an eddy current (11) about the inlet aperture mouth (9) of the yarn guide channel.
    Type: Application
    Filed: March 19, 2003
    Publication date: January 29, 2004
    Applicant: MASCHINENFABRIK RIETER AG
    Inventors: Herbert Stalder, Olivier Wust
  • Publication number: 20040016222
    Abstract: For the design of an opening cylinder (1) for an open-end spinning device where the opening cylinder (1) has a face (11), it is proposed that the base body (12) of the opening cylinder (1) be located on the end of a shaft (2) away from the bearing (21), whereby an axial distance (9) exists between the base body (12) and the bearing (21). To bare the (22) for maintenance purposes, the clothing holder (3) is designed so as to be removable in axial direction across the bearing (21), whereby the face (11) towards the bearing (21) is formed on the clothing holder (3).
    Type: Application
    Filed: March 14, 2003
    Publication date: January 29, 2004
    Applicant: RIETER INGOLSTADT SPINNEREIMASCHINENBAU AG
    Inventors: Edmund Schuller, Eva-Maria Greppmair, Werner Strasser
  • Patent number: 6679043
    Abstract: A spinning machine includes a plurality of spinning stations or places. Each spinning place includes a yarn formation mechanism that is supplied with staple fiber material in the form of a longitudinal object. Each spinning place includes a refining mechanism by way of which the longitudinal object is refined prior to the fiber material being supplied to a yarn formation mechanism. Each refining mechanism is independently drivable and controllable with respect to the other refining mechanisms. At least one sensor is disposed at each of the spinning places to detect at least one measurable property correlated with fiber mass per unit of length. A controlling monitoring unit is configured to receive and process data measured by the sensor. A control monitoring unit is configured with the refining mechanism at the associated spinning place for control of the refining mechanism as a function of the property detected and measured by the sensor independent of the refining mechanisms at other spinning places.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: January 20, 2004
    Assignee: Maschinenfabrik Reiter AG
    Inventors: Christian Griesshammer, Peter Anderegg
  • Patent number: 6662542
    Abstract: In open-end spinning and in coordination with predetermined operating phases, a yarn suction pipe by means of which a yarn extending from a bobbin is to be received temporarily is brought successively into different operating planes. The yarn suction pipe is imparted a defined operational movement as a function of the operating planes occupied and in coordination with the current operating phase. The operating positions of the yarn suction pipe that can be moved into at least two operating planes are defined in such a manner that when the yarn suction pipe is in its operating position in a first operating plane, a yarn extending from the bobbin pressing on a winding roller to the yarn suction pipe crosses the traversing range of the yarn traversing guide. However, the yarn is outside the traversing range of this yarn traversing guide when the yarn suction pipe assumes its operating position in an additional operating plane.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: December 16, 2003
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventors: Adalbert Stephan, Harald Widner
  • Patent number: 6623585
    Abstract: The present invention provides a process whereby high quality, well-coalesced spandex can be made by dry-spinning a high-melting thermoplastic polyurethane, bundling the as-spun filaments into a side-by-side relationship, and passing the bundled filaments over or through a guide. The spandex made by this method has high-heat settability, high denier uniformity, good knittability and weavability, and provides fabrics having good surface uniformity.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: September 23, 2003
    Assignee: DuPont-Toray Co. Ltd.
    Inventors: Masao Umezawa, Hideki Nakanishi, Toshikazu Matsuda
  • Patent number: 6591600
    Abstract: The invention relates to a rotor spinning machine comprising a plurality of operating units situated next to each other, each of which contains a spinning unit (1) with a singling-out device (5) having in its body a rotatably mounted combing roller (52) equipped on its circumferential surface with an operative coating (521) around which there is provided in the body (51) of the singling-out device a circumferential fibre channel (511) whose operative section extends in the sense of rotation of the combing roller (52) from the mouth of the sliver feeding device (4) to the supply channel (6) bringing the singled-out fibres into the rotor, said circumferential fibre channel (511) having provided therein the mouth of a closable auxiliary supply channel (514) for pressure air.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: July 15, 2003
    Assignee: Rieter CZ A.S.
    Inventors: Josef Ludví{haeck over (c)}ek, Pavel Kousalik, Jaroslav Markl, Tomá{haeck over (s)} Tesa{haeck over (r)}
  • Publication number: 20030056488
    Abstract: An air-spinning arrangement has an opening device having a feed device and an opening roller for opening a sliver into individual fibers. A perforated removal roller receives the opened fibers from the opening roller in the circumferential direction. A conveyor belt conveys the fibers from the removal roller to a nip with a following air-spin nozzle for forming a yarn. The conveyor belt is arranged axially-parallel with the removal roller. A sufficiently close spacing of the conveyor belt from the removal roller is selected such that the fibers conveyed to the removal roller can be picked up by mechanical contact, and the conveyor belt is driven such that it deflects the fibers by approximately 90° and conveys them to the combing location. The air-spinning arrangement allows the formation of a fiber structure that is well suited to the air-spinning process.
    Type: Application
    Filed: September 19, 2002
    Publication date: March 27, 2003
    Applicant: W. Schlafhorst AG & Co.
    Inventor: Hans Raasch
  • Patent number: 6502291
    Abstract: Traversing yarn guiding rods in textile machines producing X-packages are often made of carbon fibers for the purpose of reducing the inertia force. These kinds of traversing yarn guiding rods are prone to wear at their bearing points. For this reason, the bearings, having a distance to one another which corresponds to at least twice, preferably three times the traversing stroke, are collectively replaced from time to time, in such a way that the yarn guide rod is supported at different places than before. The replacement bearings are applied staggered to the old bearing points in such a way that the new bearing points now have a distance to the exposed previous bearing points, which distance corresponds to at least one traverse stroke. This results in the replacement bearings acting with a non-worn part of the fiber guiding rod. The life of the yarn guiding rod is thus significantly increased.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: January 7, 2003
    Inventor: Fritz Stahlecker
  • Publication number: 20020106509
    Abstract: A stretchable synthetic polymer fiber comprising an axial core formed from an elastomeric polymer, and two or more wings attached to the core and formed from a non-elastomeric polymer, wherein preferably at least one of the wings is mechanically locked with the axial core. The fibers can be used to form garments, such as hosiery. A spinneret pack for producing such fibers is also provided.
    Type: Application
    Filed: September 28, 2001
    Publication date: August 8, 2002
    Inventors: Garret D. Figuly, Anthony J. Soroka, Marc B. Goldfinger, Rakesh H. Mehta, H. Vaughn Samuelson, Gregory P. Weeks
  • Patent number: 6412266
    Abstract: In a spinning machine with at least one spinning station possessing a feed drum, driven by a single drive, a disintegrator, a rotor, a withdrawal roll and a spool roll, provisions have been made that the spinning station has an additional single drive respectively for the withdrawal roll and/or the spool roll and/or a paraffin roll. The speed of rotation ratio of the single drives can be preset to specified values.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: July 2, 2002
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventors: Anton Paweletz, Bernd Bahlmann, Erich Bock, Edmund Schuller
  • Publication number: 20020023422
    Abstract: In open-end spinning and in coordination with predetermined operating phases, a yarn suction pipe 3 by means of which a yarn F extending from a bobbin 121 is to be received temporarily is brought successively into different operating planes Ea, Eb in which the yarn suction pipe 3 is imparted a defined operational movement in function of the operating planes Ea, Eb occupied and in coordination with the current operating phase. The operating positions 3b, 3c of the yarn suction pipe 3 that can be moved into at least two operating planes Ea, Eb are defined in such manner that when the yarn suction pipe 3 is in its operating position 3b, 3c in a first operating plane Ea, a yarn F extending from the bobbin 121 pressing on winding roller 120 to the yarn suction pipe 3 crosses the traversing range of the yarn traversing guide 126 but is outside the traversing range of this yarn traversing guide 126 when the yarn suction pipe 3 assumes its operating position 3A in an additional operating plane Eb.
    Type: Application
    Filed: August 22, 2001
    Publication date: February 28, 2002
    Inventors: Adalbert Stephan, Harald Widner
  • Publication number: 20020007623
    Abstract: A process for producing dyed spun cotton yarns having a reduced number of irregularities and increased luster is described. The process involves dyeing at least a portion of the cotton fibers which are to form the yarn, then combing the dyed fibers subsequent to the dyeing process. The dyed and combed fibers are then optionally blended with fibers having a visually distinct appearance, and spun into a yarn using conventional spinning methods. The resulting yarns having a dramatically reduced number of thick and thin places and improved yarn properties including improved luster and hand. Furthermore, when the thus-dyed fibers are blended with differently-colored fibers prior to the combing operation, the resultant yarns match the visual colors of like-colored yarns produced by conventional processes, while the color is more intimately blended and the yarns have a markedly increased uniformity, luster and tenacity.
    Type: Application
    Filed: November 5, 1999
    Publication date: January 24, 2002
    Inventor: MARTIN BOGER FOIL JR
  • Patent number: 6339921
    Abstract: A piecing device with an evaluation arrangement for determining parameters of an automatic piecing process at a spinning station (1) of an open-end spinning frame, wherein a control device is provided which, initially in a test phase, controls the creation of at least one test piecing without a supplementary delivery of additional fiber and the subsequent removal of the created test piecing. The evaluation device is designed for determining the length of a thinner extent of the test piecing downstream of the test piecing as viewed in the direction of yarn travel, and for the determination from the detected length of the thinner extent an amount of supplementary delivery of additional fiber required for compensating the thinner extent. A reduction of the draft which is effective during the test phase assures an interference-free checking of the test piecing. The optimization phase for piecings is shortened and leads to a more accurate result when determining the supplementary delivery of additional fiber.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: January 22, 2002
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Manfred Lassmann, Heribert Mertens
  • Publication number: 20010042365
    Abstract: In a spinning machine with at least one spinning station (1) which station possesses a feed drum (2), driven by a single drive (12), a disintegrator (3), a rotor (4), a withdrawal roll (5) and a spool roll (7), provision has been made, that the spinning station (1) has an additional single drive (15, 16, 17) respectively for the withdrawal roll (5) and/or the spool roll (7) and/or a paraffin roll (6) and that the speed of rotation ratio of the single drives (12, 15, 16, 17) can be preset to specified values.
    Type: Application
    Filed: June 8, 2001
    Publication date: November 22, 2001
    Inventors: Anton Paweletz, Bernd Bahlmann, Bock Erich, Schuller Edmund
  • Publication number: 20010039790
    Abstract: The present invention provides a process whereby high quality, well-coalesced spandex can be made by dry-spinning a high-melting thermoplastic polyurethane, bundling the as-spun filaments into a side-by-side relationship, and passing the bundled filaments over or through a guide. The spandex made by this method has high-heat settability, high denier uniformity, good knittability and weavability, and provides fabrics having good surface uniformity.
    Type: Application
    Filed: February 23, 2001
    Publication date: November 15, 2001
    Inventors: Masao Umezawa, Hideki Nakanishi, Toshikazu Matsuda
  • Patent number: 6308507
    Abstract: Singled fibers from a fiber strand, separated by a rotor, are collected by suction on a continuously moving surface of a perforated belt or rotary drum. The fiber packet is not formed with a twist in this region and, only upon transfer to a downstream region is the twist applied, e.g. by a ring spindle.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: October 30, 2001
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Friedrich Dinkelmann
  • Patent number: 6248835
    Abstract: A polymer blend, fibers manufactured from the blend and method of producing the fibers is disclosed. The polymer blend includes from 92 wt % to 98.5 wt % of a base polypropylene having a melt flow rate of less than 20 g/10 min, and a maximum draw ratio D, a Crimp Stability of CS, when drawn into filaments at 1000 m/sec, and from 8 wt % to 1.5 wt % of an amorphous polystyrene having a melt flow rate of less than 15 g/10 min. The polymer blend is drawable at greater than 800 m/sec to produce filaments having a maximum draw ratio of D2, the ratio of D2: D1, being greater than 1.15:1 and a Crimp Stability of CS2, the ratio of CS2: CS1 being greater than 1.45. Preferably, the base polypropylene has a melt flow rate of between 8 and 15 g/10 min. In one embodiment, the amorphous polystyrene is characterized by a melt flow between 2 and 15 g/10 min.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: June 19, 2001
    Assignee: Fina Technology, Inc.
    Inventors: Mohan Gownder, Baireddy Raghava Reddy, Jay Nguyen
  • Patent number: 6216430
    Abstract: A spinning machine in a plurality of sections has its electrical loads, especially motors, yarn feeders, stretching and heating devices supplied with electrical energy through cable segments stretching the length of the respective machine section and having plug-and-jack connectors at opposite ends. From one of these connectors a section conductor can run to all of the loads of a given type in the respective section. The cable segments are connected together upon assembly of the spinning machine from its sections.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: April 17, 2001
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Ingo Oppermann
  • Patent number: 6212868
    Abstract: The spinning rotors of open-end spinning aggregates are supported on supporting discs. For the purposes of non-contact revolution counting, a front side of a supporting disc is provided with at least one permanent magnet. A signal receiver of a maintenance device selectively arrangeable at the spinning aggregates is arranged at the permanent magnet. The distance between the permanent magnet and the signal receiver is bridged by a ferromagnetic information transmitter, which is preferably arranged on a swivelling housing section of the spinning aggregate.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: April 10, 2001
    Inventor: Hans Braxmeier
  • Patent number: 6214145
    Abstract: The present invention provides a process whereby high quality, well-coalesced spandex can be made by dry-spinning a high-melting thermoplastic polyurethane, bundling the as-spun filaments into a side-by-side relationship, and passing the bundled filaments over or through a guide. The spandex made by this method has high heat-settability, high denier uniformity, good knittability and weavability, and provides fabrics having good surface uniformity.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: April 10, 2001
    Assignee: DuPont Toray Co., Ltd.
    Inventors: Masao Umezawa, Hideki Nakanishi, Toshikazu Matsuda
  • Patent number: 6092356
    Abstract: A process for open-end spinning provides for at least one sliver being opened into single fibers. A wide fiber veil is formed from parallel single fibers extending in the direction of motion, which fiber veil is fed to a transporting surface by means of a moving collecting surface. The single fibers are transferred from the collecting surface to the transporting surface at a transfer point, whereby the direction of motion of the fiber veil is abruptly changed, however the current relative position of the single fibers remaining essentially constant. This motion direction change occurs at the transfer point, with the respective front part of the fiber veil being transferred to the transporting surface as a fiber group in a predetermined sequence, and the transporting surface moves transversely to the direction of motion of the collecting surface.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: July 25, 2000
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Patent number: 6067785
    Abstract: A method is disclosed for spinning polyester staple to produce dark dyeing yarns as compared to yarns having an otherwise similar composition. The method includes spinning polyester staple into yarn, in which the polyester includes between about 0.5 and 4 percent by weight of polyethylene glycol, into yarn in a rotor spinning machine at a rotor speed of between about 110,000 and 120,000 rpm and at a tension of between about 2.5 and 3.2 grams/tex. A resulting polyester fiber is also disclosed of between about 1.2 and 2.25 denier per filament, and that contains between about 0.5 and 4 percent by weight of polyethylene glycol, and with a fiber tenacity of 4.7 grams per denier or less.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: May 30, 2000
    Assignee: Wellman, Inc.
    Inventors: David Michael Russell, Winston Patrick Moore, Robert Alton Usher, Jr.
  • Patent number: 6058693
    Abstract: A spinning process provides for opening at least one sliver to single fibers and for depositing the single fibers on a moving collecting surface in the form of an expanded fiber veil. During transport on the collecting surface and, if required on a moving drafting surface downstream thereof, the fiber veil is condensed, transversely to its direction of motion, to a strand. The roving-like strand is transported through a nipping line and twisted to a yarn under the action of a rotating air stream. Fiber ends are hereby spread out from the strand, which are helically wrapped around the yarn.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: May 9, 2000
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Patent number: 6006509
    Abstract: A method for continuously producing a twisted yarn with minimal curling tendency includes the steps of spinning a yarn and directly thereafter, within a time period of less than one second, twisting the yarn. The yarn tension at the end of the spinning step can be adjusted to be essentially the same as the yarn tension at the end of the twisting step, or, in the alternative, the yarn tension at the end of the twisting step is greater than 70% of the yarn tension at the end of the spinning step.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: December 28, 1999
    Assignee: Volkmann GmbH & Co.
    Inventors: Ulrich Ballhausen, Wilfried Rutten, Markus Beckmann, Guido Spix, Stefan Kross
  • Patent number: 5964083
    Abstract: A method for manufacturing a twisted yarn by a combined spinning and twisting process includes the steps of producing in at least two spinning devices individual spun yarns and guiding the spun yarns together to a first centering location positioned coaxially to the axis of the double twisting device to subject the individual spun yarns in a first yarn feeding direction to a first twist, whereby a yarn balloon is formed. Subsequently, the spun yarns are guided to a second centering location, also positioned coaxially to the axis of the double twisting device, and through the second centering location into the interior of the yarn balloon to subject the spun yarns in a second yarn feeding direction, opposite the first yarn feeding direction, to a second twist. The spun yarns are then wound onto a rotating bobbin positioned in the interior of the yarn balloon.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: October 12, 1999
    Assignee: Volkmann GmbH & Co.
    Inventors: Roland Greis, Georg Heinen, Jurgen Schnitzler, Bertram Schwanitz