Patents by Inventor Detlev Schulz
Detlev Schulz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9428848Abstract: 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: GrantFiled: May 22, 2009Date of Patent: August 30, 2016Assignee: Oerlikon Textile GmbH & Co. KGInventors: Helmut Weigend, Hansjörg Meise, Detlev Schulz
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Publication number: 20110121480Abstract: 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: ApplicationFiled: May 22, 2009Publication date: May 26, 2011Applicant: OERLIKON TEXTILE GMBH & CO. KGInventors: Helmut Weigend, Hansjörg Meise, Detlev Schulz
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Publication number: 20100028661Abstract: The invention relates to a method for the production of a multilayered laminate, especially for the production of packagings, having at least one or two oriented film(s) (40) and at least one barrier layer (30), the following steps being carried out: providing two, especially sealable, outer films (40), at least one outer film (40) being an oriented outer film (40), and extruding in between the two outer films (40) an at least three-ply extrudate having a barrier layer material, the extrudate being in the form of a barrier-containing extruded bonding layer (60), and the barrier-containing extruded bonding layer (60) being bounded by two outer plies (10) which are each laminated directly onto the respective outer film (40). The invention relates also to a multilayered laminate produced by this method.Type: ApplicationFiled: November 30, 2007Publication date: February 4, 2010Applicant: HUHTAMAKI RONSBERG, ZWEIGNIEDERLASSUNG DER HUHTAMAInventors: Arno Holzmueller, Detlev Schulz
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Publication number: 20080286512Abstract: The invention relates to a multilayered laminate for tubes having an embedded aluminum layer, the aluminum layer being surrounded on each side by an oriented co-extruded protective layer which is in each case joined to the aluminum layer by means of an intermediate layer material. The invention relates also to the production of such a laminate and to a tube produced from such a laminate.Type: ApplicationFiled: May 15, 2008Publication date: November 20, 2008Inventors: Arno Holzmuller, Detlev Schulz
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Publication number: 20060127658Abstract: The invention relates to a multi-layer laminate for tubes and similar foil-type packaging having an embedded barrier layer, a metal—especially aluminium—foil and optionally an outer structure, especially an outer and/or sealing film, wherein the barrier layer consists of polyamide (PA), especially aromatic and/or partly aromatic polyamide or mixtures thereof, of mixtures of PA with polyacrylonitrile (PAN) and/or ethylene vinyl alcohol copolymer (EVOH), or of polyethylene terephthalate (PET). The invention further relates to a method of producing said laminate.Type: ApplicationFiled: September 11, 2003Publication date: June 15, 2006Inventors: Detlev Schulz, Arno Holzmuller
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Patent number: 6716014Abstract: A melt spinning apparatus for spinning a synthetic yarn, wherein the yarn is formed by combining a plurality of filaments and wound to a package by means of a takeup device downstream of the spinning apparatus. Downstream of the spinneret, an inlet cylinder with a gas-permeable wall and a cooling tube are arranged. The cooling tube connects to a suction device such that an air stream forms in the cooling tube in the direction of the advancing yarn. This air stream assists the advance of the filaments and leads to a delayed cooling. To ensure adequate cooling of the filaments within the cooling zone, an air supply device is provided for generating an additional cooling air stream which flows in the axial direction of the cooling tube for cooling the filaments downstream of the inlet to the cooling tube.Type: GrantFiled: January 23, 2001Date of Patent: April 6, 2004Assignee: Barmag AGInventors: Klaus Schäfer, Dieter Wiemer, Detlev Schulz, Hansjörg Meise, Ulrich Enders, Hans-Gerhard Hutter, Peter Senge, Roland Nitschke, Gerhard Müller
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Patent number: 6712592Abstract: A spinning apparatus for melt spinning a synthetic multifilament yarn, which includes a spin head having a plurality of narrowly spaced apart spin packs with spinnerets, through the nozzle bores of which the filaments are extruded. Downstream of the spinnerets, the filaments advance through cooling tubes, which connect to an air stream generator that produces an air stream in the direction of the advancing yarn. The cooling tubes are mounted for movement to a lowered servicing position, and sealing units are provided for connecting the cooling tubes to the spin head when in the raised operative position. The sealing units form a separating plane arranged on the side of the spin head and a separating plane arranged on the side of the cooling tube, and the separating plane on the spin head side is located on the spin pack. A very compact arrangement of the spin head and the cooling tubes is thereby enabled.Type: GrantFiled: August 23, 2002Date of Patent: March 30, 2004Assignee: Barmag AGInventors: Bernd Faulenbach, Detlev Schulz
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Patent number: 6572798Abstract: An apparatus and method for spinning a synthetic yarn, wherein a heated polymeric melt is extruded through a spinneret and the resulting filaments are combined and wound to a package by means of a take-up device located downstream of the spinneret. A cooling tube for the filaments is positioned below the spinneret, and an inlet cylinder which has a gas permeable wall is positioned between the inlet cylinder and the cooling tube. The cooling tube connects to an air stream generator in such a manner that an air stream develops in the cooling tube in the direction of the advancing yarn. The air stream is formed by a quantity of air that enters the cooling tube via the inlet cylinder, and the inlet cylinder is subdivided in the direction of the advancing yarn into several zones, each with a different gas permeability, for controlling the quantity of air entering the inlet cylinder. It is thereby possible to influence with advantage the precooling of the yarn and the formation of the air stream.Type: GrantFiled: December 22, 2000Date of Patent: June 3, 2003Assignee: Barmag AGInventors: Roland Nitschke, Hansjörg Meise, Hans-Gerhard Hutter, Ulrich Enders, Peter Senge, Detlev Schulz, Dieter Wiemer
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Patent number: 6551545Abstract: A method and an apparatus for melt spinning a multifilament yarn from a thermoplastic material, wherein a spinneret extrudes the thermoplastic material to strandlike filaments, which are initially in liquid form and then cooled to cause their solidification. For purposes of cooling, the filaments are precooled in a cooling zone downstream of the spinneret in such a manner that the filaments do not solidify. Subsequently, the filament bundle advances by the action of a coolant stream directed in the direction of the advancing yarn into a tension zone and undergoes further cooling until the filaments solidify in a solidification zone within the tension zone. To maintain the location of the solidification zone within the tension zone in a predetermined desired range thereof, an adjustable cooling of the filaments within the cooling zone is provided.Type: GrantFiled: August 28, 2000Date of Patent: April 22, 2003Assignee: Barmag AGInventors: Hans-Gerhard Hutter, Klaus Schäfer, Dieter Wiemer, Hansjörg Meise, Detlev Schulz
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Publication number: 20030012835Abstract: A spinning apparatus for melt spinning a synthetic multifilament yarn, which includes a spin head having a plurality of narrowly spaced apart spin packs with spinnerets, through the nozzle bores of which the filaments are extruded. Downstream of the spinnerets, the filaments advance through cooling tubes, which connect to an air stream generator that produces an air stream in the direction of the advancing yarn. The cooling tubes are mounted for movement to a lowered servicing position, and sealing units are provided for connecting the cooling tubes to the spin head when in the raised operative position. The sealing units form a separating plane arranged on the side of the spin head and a separating plane arranged on the side of the cooling tube, and the separating plane on the spin head side is located on the spin pack. A very compact arrangement of the spin head and the cooling tubes is thereby enabled.Type: ApplicationFiled: August 23, 2002Publication date: January 16, 2003Applicant: Barmag AGInventors: Bernd Faulenbach, Detlev Schulz
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Patent number: 6478996Abstract: A method and an apparatus for producing a highly oriented yarn (HOY) wherein the yarn is withdrawn from the nozzle of a spinneret at a withdrawal speed of at least 6,500 m/min. The filaments forming the yarn are drawn during their solidification, so that a highly oriented molecular structure forms in the polymer. To withstand the withdrawal tension generated by the high withdrawal speed without overstressing the filaments, the filaments are assisted in their advance before they solidify such that prior to the solidification a tensile stress relief is effective on the filaments, and that during the solidification a reduced withdrawal tension is effective on the filaments while they are drawn.Type: GrantFiled: July 6, 2000Date of Patent: November 12, 2002Assignee: Barmag AGInventors: Detlev Schulz, Hansjörg Meise, Klaus Schäfer
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Publication number: 20010033037Abstract: An apparatus and method for spinning a synthetic yarn, wherein a heated polymeric melt is extruded through a spinneret and the resulting filaments are combined and wound to a package by means of a take-up device located downstream of the spinneret. A cooling tube for the filaments is positioned below the spinneret, and an inlet cylinder which has a gas permeable wall is positioned between the inlet cylinder and the cooling tube. The cooling tube connects to an air stream generator in such a manner that an air stream develops in the cooling tube in the direction of the advancing yarn. The air stream is formed by a quantity of air that enters the cooling tube via the inlet cylinder, and the inlet cylinder is subdivided in the direction of the advancing yarn into several zones, each with a different gas permeability, for controlling the quantity of air entering the inlet cylinder. It is thereby possible to influence with advantage the precooling of the yarn and the formation of the air stream.Type: ApplicationFiled: December 22, 2000Publication date: October 25, 2001Inventors: Roland Nitschke, Hansjorg Meise, Hans-Gerhard Hutter, Ulrich Enders, Peter Senge, Detlev Schulz, Dieter Wiemer
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Publication number: 20010015508Abstract: A melt spinning apparatus and a method for spinning a synthetic yarn, wherein the yarn is formed by combining a plurality of filaments and wound to a package by means of a takeup device downstream of the spinning apparatus. Downstream of the spinneret, an inlet cylinder with a gas-permeable wall and a cooling tube are arranged. The cooling tube connects to a suction device such that an air stream forms in the cooling tube in the direction of the advancing yarn. This air stream assists the advance of the filaments and leads to a delayed cooling. To ensure adequate cooling of the filaments within the cooling zone, an air supply device is provided for generating an additional cooling air stream which flows in the axial direction of the cooling tube for cooling the filaments downstream of the inlet to the cooling tube.Type: ApplicationFiled: January 23, 2001Publication date: August 23, 2001Inventors: Klaus Schafer, Dieter Wiemer, Detlev Schulz, Hansjorg Meise, Ulrich Enders, Hans-Gerhard Hutter, Peter Senge, Roland Nitschke, Gerhard Muller
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Patent number: 5433591Abstract: An apparatus for producing a synthetic filament yarn including a spinneret and cooling shaft. A plurality of air deflecting members in the form of coaxial tubes or flat plates are mounted within the cooling shaft so that the upper edge of each tube or plate lies closely adjacent the periphery of the bundle of extruded filaments, and the lower edge of each tube or plate is at a distance from the filaments greater than that of the upper edge. The deflecting members thus serve to shield the filaments from air turbulence and also to remove from the filaments a significant portion of the heated air which is entrained with the advancing filaments.Type: GrantFiled: May 19, 1993Date of Patent: July 18, 1995Assignee: Barmag AGInventors: Martin Zingsem, Detlev Schulz