Patents Assigned to Reifenhäuser GmbH & Co. KG Maschinenfabrik
  • Patent number: 10094058
    Abstract: A nonwoven web made of plastic fibers and having a web thickness less than 2 mm (preferably less than 1.5 mm) and a grammage less than 30 g/m2 (preferably less than 25 g/m2) and conveyed this web in a travel direction so that it physically contacts a guide or treatment roller. A stabilization plate extending in and transversely to the travel direction of the nonwoven web is provided upstream or downstream of the roller in the travel direction, and the nonwoven web is guided in the travel direction past the stabilization plate such that a spacing between a face of the stabilization plate turned toward the nonwoven web and the nonwoven web face is 0 to 20 mm (preferably 0.1 to 10 mm, and very preferably 0.2 to 5 mm).
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: October 9, 2018
    Assignee: REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK
    Inventors: Hans-Juergen Hofemeister, Hans-Georg Geus, Felix Goretzki, Alexander Klein, Michael Nitschke, Detlef Frey, Martin Neuenhofer
  • Patent number: 9982367
    Abstract: A method of making a spun-bond nonwoven fabric of thermoplastic filaments has the steps of first spinning the thermoplastic filaments, then cooling the spun filaments, and then conducting the cooled and spun filaments in a travel direction through a stretcher with primary air such that the primary air exits a downstream end of the stretcher with the filaments at a predetermined primary air volume/flow VP. The filaments and substantially all of the primary air are passed together as a flow from the downstream end of the stretcher into a diffuser. Secondary air is introduced into the flow at a secondary air volume/flow VS such that a ratio VP/VS of the primary rate VP to the secondary rate is equal to at least 4.5 and the primary and secondary air flow with the filaments in the travel direction through the diffuser.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: May 29, 2018
    Assignee: REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK
    Inventors: Felix Goretzki, Emin Ozgoeren, Sebastian Sommer, Detlef Frey, Alexander Klein
  • Publication number: 20180126628
    Abstract: In blown film installations, it is known to provide longitudinal stretching of the produced double layer film strip downstream of the draw-off, more precisely downstream of the reversing unit and upstream of the winder. It is also known to stretch the down-drawn film, wherein the film must then be preheated owing to the long cooling path from the draw-off. According to a first feature, the present invention specifies warming the film above the draw-off and then treating it mechanically. The film can thereby be brought with only little energy from a first level of warmth to a temperature level at which it can easily be worked. According to a second feature, the invention specifies providing a tractive force breakdown brake.
    Type: Application
    Filed: January 5, 2018
    Publication date: May 10, 2018
    Applicant: Reifenhaeuser GmbH & Co. KG Maschinenfabrik
    Inventor: Edgar GANDELHEIDT
  • Patent number: 9951448
    Abstract: An apparatus for the continuous manufacture of a spunbond web from aerodynamically stretched thermoplastic filaments has at least one spinneret, a cooling chamber for cooling the filaments, a stretcher, and a deposition device for the deposition of the filaments to form the spunbond web. At least one filament guide having a plurality of filament-guide gaps opens toward the stretcher between the stretcher and the deposition device, and the filament guide or at least one guide part of the filament guide can be moved such that the filament-guide gap or the stretcher-side openings thereof are displaced transversely to the travel direction of the spunbond web. Thus the filaments or filament bundles guided along or through the filament-guide gap are given a transverse orientation to the travel direction of the spunbond web when deposited onto the deposition device.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: April 24, 2018
    Assignee: REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK
    Inventors: Sebastian Sommer, Harald Markes, Alexander Klein, Emin Oezgoeren, Felix Goretzki
  • Patent number: 9856590
    Abstract: A spunbond nonwoven from thermoplastic filaments is made by spinning the filaments from at least one spinner, cooling and stretching the spun filaments, depositing the cooled and stretched filaments on a surface to form a nonwoven fleece web, and moving the fleece web in a travel direction. A liquid medium is introduced into the moving fleece web and it is then mechanically needled. The mechanically needled web is then subject to a hydraulic or hydrodynamic final consolidation by hydroentanglement to a basis weight of more than 80 g/m2 from a top side as well as from a lower side of the nonwoven fleece web by high-pressure water-jet bars above and below the nonwoven fleece web. O of the bars is upstream of the other bar and has a hpi density that is smaller than that of the other bar and that is equal to at most 40.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: January 2, 2018
    Assignee: REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK
    Inventor: Sebastian Sommer
  • Patent number: 9764496
    Abstract: A mixing section for an extrusion screw has an inlet end and an outlet end as well as alternating wiping lands and barrier lands. The wiping lands have a greater helix angle than the barrier lands. The wiping lands and the barrier lands define inlet channels which narrow toward the outlet end and outlet channels which widen toward the outlet end. A helical pattern of mixing channels is cut into the wiping lands and the barrier lands. The mixing channels may be oriented generally at approximately right angles to the wiping lands and the barrier lands. A portion of the extrudate encounters the inside wall surfaces of the mixing channels and changes direction which improves the mixing of the extrudate.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: September 19, 2017
    Assignee: Reifenhäuser GmbH & Co. KG, Maschinenfabrik
    Inventor: Terry Wayne Williams
  • Patent number: 9636700
    Abstract: An apparatus for wetting a material web with a liquid in which the material web is guided in a travel direction through the apparatus, which includes guide means for guiding the material web and application means for applying the liquid to the material web. On the side of the material web oriented away from the application means, a spray guard is provided, which rests directly against the material web.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: May 2, 2017
    Assignee: Reifenhäuser GmbH & Co. KG Maschinenfabrik
    Inventor: Michael Nitschke
  • Patent number: 9453292
    Abstract: A method of making a spunbond fleece from continuous filaments wherein at least some of the filaments produced have natural crimp. The filaments are deposited in the deposition station of a conveyor creating a filament mass and the conveyor transports the filament mass toward a consolidating device. A gas stream is produced that flows along the upper surface of the filament mass in the travel direction of the filament mass.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: September 27, 2016
    Assignee: REIFENHAEUSER GMBH & CO.KG MASCHINENFABRIK
    Inventors: Sebastian Sommer, Wilhelm Frey
  • Patent number: 9315954
    Abstract: An artificial turf has a base layer, a multiplicity of blades fixed to and projecting upward from the base layer, and a mass of infill between the blades and on the base layer. The infill is formed of elongated plastic fibers each having a longitudinally extending inner part of a predetermined first plastic and a longitudinally extending outer part bonded to the inner part and of a predetermined second plastic different from the first plastic.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: April 19, 2016
    Assignee: REIFENHAEUSER GMBH & CO.KG MASCHINENFABRIK
    Inventor: Jürgen Morton-Finger
  • Publication number: 20160096307
    Abstract: A coextrusion apparatus, a single-layer extrusion apparatus, a retrofit kit, as well as to a method for measuring a layer thickness, for producing a plastic film, and for retrofitting an extrusion apparatus. From the state of the art, it is known to add a detection agent in the form of a fluorescent granulate into the starting material at the extruder, in order to be able to measure the layer thickness of the layer in the film composite produced from this starting material. However, it is proposed to feed in a detection agent only beyond the extruder. This leads to a clearly shorter running time of the detection agent through the system and thereby to clearly faster measurability of changes in the production parameters.
    Type: Application
    Filed: September 29, 2015
    Publication date: April 7, 2016
    Applicant: REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK
    Inventor: Helmut MEYER
  • Patent number: 9284122
    Abstract: A roller frame including at least two rollers mounted in a housing between which a nip can be formed. The ends of the rollers are supported in rotary fashion in bearings and at least one of the rollers is embodied as an advancing roller and has an adjusting system by which it is possible to move the bearings of the advancing roller, thus changing the nip. The adjusting system has a rack and a pinion whose teeth engage with those of the rack and can be driven to rotate by a motor. It is possible to change the distance between the pinion and the rack by changing the tooth engagement depth between them.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: March 15, 2016
    Assignee: Reifenhäuser GmbH & Co. KG Maschinenfabrik
    Inventors: Helmut Meyer, Andreas Böhm
  • Publication number: 20150367532
    Abstract: For almost 100 years, extruders have been built in such a manner that at a predetermined screw diameter, a corresponding throughput capacity is achieved, depending on the process conditions. To increase the output capacity, the screw diameter is generally increased in accordance with the physical laws of similitude. The length-to-diameter ratio remains the same, or the extruder becomes longer. This leads to the result that an engineer strives to use an extruder having a small screw diameter. In order to avoid the disadvantage of space-intensive extruders, fast-turning single-screw extruders have been developed in the past 10 years. Extruders having a screw diameter of 35 mm to 100 mm and having a length of 30 D to 40 D are usual in practice. Ultimately, however, all concepts usual on the market fail to implement a universal extruder. The invention is based on the task of presenting a universal concept of a single-screw plastification machine.
    Type: Application
    Filed: February 16, 2014
    Publication date: December 24, 2015
    Applicant: Reifenhaeuser GmbH & Co. KG Maschinenfabrik
    Inventor: Tim Carsten POHL
  • Patent number: 9187282
    Abstract: A winding device for winding a continuously arriving material web onto a reel, including a contact roller by which the material web can be guided and transferred to the reel in contact with the surface of the contact roller. The contact roller has a support tube and fibers, which protrude from the outside of the support tube and form the surface of the contact roller. The fibers extend essentially perpendicular to a longitudinal axis of the contact roller so that first ends of the fibers are affixed to the support tube and their other free ends define a surface of the contact roller.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: November 17, 2015
    Assignee: Reifenhäuser GmbH & Co. KG Maschinenfabrik
    Inventor: Helmut Meyer
  • Publication number: 20150298356
    Abstract: An mixing section for an extrusion screw has an inlet end and an outlet end as well as alternating wiping lands and barrier lands. The wiping lands have a greater helix angle than the barrier lands. The wiping lands and the barrier lands define inlet channels which narrow toward the outlet end and outlet channels which widen toward the outlet end. A helical pattern of mixing channels is cut into the wiping lands and the barrier lands. The mixing channels may be oriented generally at approximately right angles to the wiping lands and the barrier lands. A portion of the extrudate encounters the inside wall surfaces of the mixing channels and changes direction which improves the mixing of the extrudate.
    Type: Application
    Filed: January 20, 2015
    Publication date: October 22, 2015
    Applicant: Reifenhäuser GmbH & Co. KG, Maschinenfabrik
    Inventor: Terry Wayne Williams
  • Patent number: 9051673
    Abstract: A method of conveying and treating a web, wherein the web is first conveyed over a transport surface and then over a rotating transfer roller at the end of the transport surface. The web is transferred from the transfer roller to a treatment roller at a spacing from the transfer roller. The conveying of the web is performed with the proviso and particularly a spacing a between the transfer roller and the treatment roller is set such that the web wraps around the treatment roller over a wrap angle ? from 15° to 90°.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: June 9, 2015
    Assignee: REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK
    Inventors: Detlef Frey, Peter Schlag, Hans-Georg Geus, Claudio Cinquemani
  • Publication number: 20150151482
    Abstract: In blown film installations, it is known to provide longitudinal stretching of the produced double layer film strip downstream of the draw-off, more precisely downstream of the reversing unit and upstream of the winder. It is also known to stretch the down-drawn film, wherein the film must then be preheated owing to the long cooling path from the draw-off. According to a first feature, the present invention specifies warming the film above the draw-off and then treating it mechanically. The film can thereby be brought with only little energy from a first level of warmth to a temperature level at which it can easily be worked. According to a second feature, the invention specifies providing a tractive force breakdown brake.
    Type: Application
    Filed: August 7, 2013
    Publication date: June 4, 2015
    Applicant: Reifenhaeuser GmbH & Co. KG Maschinenfabrik
    Inventor: Edgar Gandelheidt
  • Patent number: 9005501
    Abstract: The invention relates to a method and an apparatus for producing a film web made of thermoplastic material in which the thermoplastic material is extruded in at least one layer as plastic melt from a wide-slit nozzle in an extrusion direction and subsequently led away over at least roller, wherein tensile forces are exerted in the extrusion direction and transversely to the extrusion direction in order to stretch the film web longitudinally and transversely, wherein during application of the tensile forces in and transversely to the extrusion direction the film web has a temperature at least corresponding to the melting temperature of the same.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: April 14, 2015
    Assignee: Reifenhaeuser GmbH & Co. KG Maschinenfabrik
    Inventors: Helmut Meyer, Jochen Hennes
  • Patent number: 8936748
    Abstract: Artificial turf has a base layer, a multiplicity of blades fixed in and projecting upward from the base layer, and a mass of damping material on the base layer and through which the blades project. Each of the blades is at least partially formed of a polyester of terephthalic acid made from waste. The polyester is polyethylene terephthalate (PET) or polybutylene terephthalate (PBT), both from waste. The base layer is a flat primary layer, preferably a textile and preferably consists of plastic, a polyolefin and/or a polyester of terephthalic acid, preferably a polyester of terephthalic acid from waste.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: January 20, 2015
    Assignee: Reifenhaeuser GmbH & Co. KG Maschinenfabrik
    Inventor: Juergen Morton-Finger
  • Publication number: 20140066279
    Abstract: The invention relates to a folding blade for a blown film line, as well as to a blown film line equipped therewith. Folding blades are used for laterally folding in a film bubble running to the take-off pinch rolls. If they engage deeply into the film bubble, they are provided with a fin on the rear side, and referred to as deep folding blades. The invention proposes that the rear side of a folding blade be equipped with a fin, which exhibits a collapsible element with an adjustment device. The volume of the fin can thereby be varied. In particular, the fin can be laid flat against the rear side of the folding blade.
    Type: Application
    Filed: August 21, 2013
    Publication date: March 6, 2014
    Applicant: Reifenhaeuser GmbH & Co. KG Maschinenfabrik
    Inventor: Konrad BUTTY
  • Patent number: D744666
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: December 1, 2015
    Assignee: Reifenhäuser GmbH & Co. KG Maschinenfabrik
    Inventor: Thorsten Weber