Patents Assigned to Reifenhauser GmbH & Co.
  • Patent number: 7479003
    Abstract: A method and a device for producing a film made of a thermoplastic material, wherein a plastic melt is blown up into a film bubble and is shaped into a desired film by a calibrating arrangement, and a downstream arranged flattening device. For providing as contactless as possible a guidance, calibration and flattening, film guidance elements are used with a laminar uniform air cushion between the film guidance element and the surface of the film bubble, without contact between the surface of the film bubble and the film guidance element.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: January 20, 2009
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventors: Eike Wedell, Helmut Meyer
  • Patent number: 7445443
    Abstract: A turning bar draw-off device for a tubular film extrusion installation, with a plurality of turning bars which can be rotatingly driven around a common axis of rotation or in reverse by rotary drive mechanisms. For the rotating or reversing guidance of the turning bars around the axis of rotation, the ends of each turning bar are connected with guide carriages, which are guided on guide rails arranged in a circle.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: November 4, 2008
    Assignee: Reifenhäuser GmbH & Co. Maschinenfabrik
    Inventor: Helmut Meyer
  • Patent number: 7384254
    Abstract: A coextrusion adapter for an extrusion installation with extruders and a tool for producing a composite coextrusion structure of thermoplastic material. The coextrusion adapter has a central conduit with an end at an inlet side for connecting an extruder and an end at an outlet side for connecting the tool. The coextrusion adapter has at least one coextrusion conduit with an inlet end and an outlet end. A second extruder can be connected to the inlet end. At an end facing the outlet end the adjusting elements have a wedge-shape adjusting section with one wedge surface facing the central conduit and another wedge surface facing the outlet end of the coextrusion conduit. The adjusting section of the adjusting elements is pivotal around an axis extending over the width of the outlet end by the actuating drives. When an increase of the inside diameter of the respective transverse section of the outlet end occurs the corresponding transverse section of the central conduit is narrowed, and vice versa.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: June 10, 2008
    Assignee: Reifenhäuser GmbH & Co. Maschinenfabrik
    Inventors: Anton Rübhausen, Peter Siebigteroth
  • Patent number: 7179412
    Abstract: A closed fiber spinning system includes a spin beam assembly including a plurality of polymer distribution manifolds to independently deliver different polymer component fluid streams to a spin pack and independently maintain those fluid streams at different temperatures. The spin beam assembly in combination with the closed spinning system facilitates the production of a wide variety of multiple polymer component fiber and fabric products having a desired denier and degree of uniformity.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: February 20, 2007
    Assignees: Hills, Inc., Reifenhauser GmbH & Co. Maschinenfabrik
    Inventors: Arnold Wilkie, Hermann Balk
  • Patent number: 7168473
    Abstract: A web or fleece of synthetic resin strand collected on a sieve belt is discharged from the sieve belt into further processing equipment over a rerouting roller at the discharge end of the sieve belt. The rerouting roller is perforated and air or another fluid medium is passed through the belt at the rerouting roller to reduce adhesion forces between the belt and the web and lift the web from the belt without damage to the belt.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: January 30, 2007
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventors: Hans-Georg Geus, Detlef Frey
  • Patent number: 7160091
    Abstract: Device for the production of multicomponent fibers or of filaments, in particular bicomponent fibers, whereby a nozzle block assembly is provided. The assembly consists of a middle nozzle block and two outer nozzle blocks. Arranged in the nozzle block assembly are at least two inflow channels, each for a melt flow of one component. At the lower end of the nozzle block assembly is a nozzle with apertures for the outlet of the multicomponent strands. At least one inflow channel runs over at least a part of its length exclusively through an outer nozzle block.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: January 9, 2007
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventor: Michael Baumeister
  • Patent number: 7156639
    Abstract: A device for producing filaments, in particular, from a thermoplastic polymer, wherein the filaments emerge from the spinneret openings of a spinneret plate. A distribution device is provided for distributing the molten polymer being supplied over a preliminary spinning width. At least one exchangeable distribution plate with several distribution openings that are distributed over the spinning width is arranged downstream of the distribution device. The exchangeable spinneret plate is arranged downstream of the distribution plate, wherein said spinneret plate contains spinneret channels that are distributed over the final spinning width. The spinning width defined by the distribution openings is smaller or larger than the preliminary spinning width, and the preliminary spinning width can be reduced or enlarged to the final spinning width with the aid of the distribution plate. The desired final spinning width can be adjusted by exchanging the distribution plate.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: January 2, 2007
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventor: Michael Baumeister
  • Patent number: 7114942
    Abstract: A calibrating basket for a film blowing tube is provided with roller bearings to prevent stripe formation on the film and pinching of the film between the rollers.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: October 3, 2006
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventor: Helmut Meyer
  • Patent number: 7093785
    Abstract: A transverse cutting device for a continuously fed-in web of material which is wound onto sequentially positioned winding tubes, wherein the transverse cutting device includes a cutter block which can be displaced transversely with respect to the web of material and can be driven by a drive mechanism in the displacement direction, and in which a cutting blade for the transverse cutting of the web of material is held, wherein the cutter block has an applicator brush trailing the cutting blade, by which the leading edge of the web of material formed while being severed can be successively placed against the circumference of a waiting winding tube. Also, a winding device for winding a continuously fed-in web of material onto sequentially provided winding tubes is proposed, which has a transverse winding device.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: August 22, 2006
    Assignee: Reifenhäuser GmbH & Co. Maschinenfabrik
    Inventors: Helmut Meyer, Andreas Böhm, Christoph Schmitt
  • Patent number: 7070403
    Abstract: A nozzle for producing filaments or fibers of thermoplastic synthetic resin has at the nozzle end one or more bores, preferably opening at a flat surface and receiving respective inserts or shaped bodies which are formfitting in the bores and have along their peripheries respective nozzle channels opening at orifices through which the synthetic resin is discharged. Air streams may be directed at the strand at an acute angle when fibers are to be produced.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: July 4, 2006
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventors: Ulrich Dzialas, Detlef Frey, Hans-Georg Geus
  • Patent number: 7036763
    Abstract: A method and apparatus for winding a continuously delivered film web onto successively delivered winding tubes with a rotatably drivable contact roller, a winding station, associated with the contact roller, for the winding tube for winding the coil, a winding preparation station for receiving a new winding tube and beginning to wind the film web, and a transverse-cutting device for cutting the film web crosswise between the winding station and the winding preparation station. Associated with the winding preparation station for the new winding tube are a charger for generating an electrostatic charge of the new winding tube and a blower device for subjecting the film web to a blown air stream aimed counter to the feeding direction of the film web.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: May 2, 2006
    Assignee: Reifenhäuser GmbH & Co. Maschinenfabrik
    Inventors: Andreas Böhm, Helmut Meyer
  • Patent number: 7025303
    Abstract: A turning bar for contactless guidance of a tubular film web moved at a loop angle around the turning bar, including a support tube with a hollow interior, which can be connected with a compressed air source. The support tube has a plurality of air outlet openings which communicate with the interior and are spaced apart from each other, substantially over an entire width of the support tube within an angular area of the support tube corresponding to the loop angle of the tubular film web. An air-permeable microporous layer is applied to the exterior of the support tube and forms the surface of the latter, through which the compressed air exiting the air outlet openings of the support tube can flow. The compressed air exits the microporous layer as a laminar air flow, which forms a laminar air cushion between the turning bar and the tubular film web. An angular area in which the air outlet openings are formed in the support tube is increased with respect to the loop angle of the tubular film web.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: April 11, 2006
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventor: Helmut Meyer
  • Patent number: 7018187
    Abstract: An apparatus for smoothing and cooling of slit nozzle synthetic web passes the web following the smoothing gap between two rollers along a cooled surface and into contact with cold air introduced by cold air chamber open toward the roller surface.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: March 28, 2006
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventor: Helmut Meyer
  • Patent number: 7004738
    Abstract: An apparatus for producing a melt blown web in which the collecting screen upon which the filaments are deposited passes over a plurality of suction regions or areas which have respective suction blowers and controls for the suction force and air throughput.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: February 28, 2006
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventors: Axel Becker, Hans-Peter Schlag, Hans-Georg Geus, Detlef Frey
  • Patent number: 6997694
    Abstract: An extruder drive has a housing, at least two extrusion worms each having a drive shaft extending into the housing, and at least one drive motor including at least one cylindrical stator fixed in the housing and a cylindrical rotor cooperating with the stator so as to be rotatably driven by the stator. The rotor surrounds the drive shafts, and each of the drive shafts is independently connected to the rotor for driving thereby.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: February 14, 2006
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventors: Reinhold Winkler, Dieter Thewes, Wieslaw Walach
  • Patent number: 6991758
    Abstract: A method and a device for production of a web with good breathing properties, for example having a nonwoven web based on plastic filaments and/or plastic fibers and a plastic film, applied on one side of the nonwoven web and containing at least one mineral filler. For the production of the good breathing properties, the web is stretched in the longitudinal direction of the same, in two successive steps, and an embossing is carried out, at least in certain sectors of the surface, between the two steps which effect the stretching in the longitudinal direction.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: January 31, 2006
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventors: Klemens Krumm, Klaus Reifenhauser
  • Patent number: 6954983
    Abstract: A method for continuously producing flat cables with electric conductors embedded in an isolating material which are arranged at a certain distance from each other, parallel to each other. According to this invention, the band shaped conductors are guided separately in a plane forming two sides of a surface. The surface sides have insulating layers based on thermoplastic synthetic materials. According to this invention, at least one of the insulating layers which covers the surface sides is produced by extrusion coating of a thermoplastic melt.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: October 18, 2005
    Assignee: Reifenhäuser GmbH & Co Maschinenfabrik
    Inventors: Karl Fröschl, Frank Bennerscheidt, Hartmut Halter
  • Patent number: 6932590
    Abstract: An apparatus for producing spun-bond webs has, beneath the receiving belt, a suction unit having at least two suction zones including a primary suction zone and at least one other suction zone, the primary suction zone receiving most of the filaments from an aerodynamic stretching unit below a spinneret. The suction speeds in the two zones can be adjusted independently of one another. Preferably three such zones are provided in succession in the direction of displacement of the perforated belt.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: August 23, 2005
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventors: Hans Georg Geus, Detlef Frey, Peter Schlag
  • Patent number: 6918750
    Abstract: A spun-bond web-making apparatus has the cooling passage below the spinneret provided with a plurality of air chamber sections which are supplied with air at different temperatures, the cooling passage being connected to the drawing unit for aerodynamic stretching of the filaments without a gap through which external air can be supplied.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: July 19, 2005
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventors: Hans-Georg Geus, Detlef Frey, Peter Schlag
  • Patent number: 6908292
    Abstract: In the production of a spunbond web by aerodynamically stretching thermoplastic filaments from a spinneret, the stretching nozzle is formed by two nozzle-forming units each of which has a temperature control device, especially a heater, to minimize deformation at the stretching nozzle defining wall. The result is a reduction in the tolerance of the basis weight of the spunbond web.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: June 21, 2005
    Assignee: Reifenhauser GmbH & Co. Maschinenfabrik
    Inventors: Hans Georg Geus, Hans Jürgen Hofemeister, Falk Rösner, Detlef Frey, Karsten Sievers, Udo Schomer