Patents Assigned to Rheinische Filztuchfabrik GmbH
  • Patent number: 6737370
    Abstract: A press pad for use in hot laminating presses includes a woven fabric of warp threads and weft threads. At least some of the threads include at least one elastomer selected from among fluoroelastomers, fluorosilicone elastomers, blend elastomers prepared by copolymerizing a mixture of raw crude silicone and fluorosilicone rubbers, and blend elastomers prepared by copolymerizing a mixture of raw crude silicone and fluorinated rubbers. The overall woven fabric contains a substantial proportion, such as at least 10% or more, of the selected elastomer. The selected elastomer is preferably applied as a coating or sheath over a multi-strand core of copper, brass, high-grade alloy steel or stainless steel strands to form the weft threads. The press pad has good elastomeric resilience, excellent temperature resistance for constant duty use above 250° C., and excellent chemical resistance.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: May 18, 2004
    Assignee: Rheinische Filztuchfabrik GmbH
    Inventor: Rolf Espe
  • Publication number: 20040023582
    Abstract: A press pad is disclosed having a fabric, whose weft and/or warp (1) each have alternating types of thread having differing elasticities transverse to the thread axis, these types of thread having polymer material with high temperature stability. Using this press pad, the compensation of different pressures is improved in relation to the known press pads.
    Type: Application
    Filed: July 11, 2003
    Publication date: February 5, 2004
    Applicant: Rheinische Filztuchfabrik GmbH
    Inventor: Rolf Espe
  • Patent number: 6339032
    Abstract: A molded pad of asbestos-free material, for use e.g. in short-cycle and multi-platen presses for coating chipboard or other substrates with melamine, films or other materials, consisting of woven fabric made of heat-resistant yarn, esp. aromatic polyamide (aramid), opt. combined with other yarn materials and contg. 50-98 (pref. 71-92) wt. % metal fibers (w.r.t. total wt. of pad). The novelty is that a non-woven fabric (B) is uniformly bonded with adhesive (I) to the top and/or bottom side of the woven fabric (A). Also claimed is a similar pad for use in high-pressure laminating presses, with woven fabric (esp. of aramid) as above (A) contg. 0-70 (pref. 0-40) wt. % metal fibers and with non-woven fabric (B) evenly stuck on the top and/or bottom of layer (A) with adhesive (I).
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: January 15, 2002
    Assignee: Rheinische Filztuchfabrik GmbH
    Inventors: Bruno Hennecken, Rolf Espe
  • Patent number: 6040253
    Abstract: A press pad which is made of asbestos-free material includes at least one yarn of Group I in combination with at least one yarn of Group II, wherein Group I includes (A) yarn composed of filaments of at least one aromatic polyamide and filaments of at least one metallic material selected from the group consisting of metals and metal alloys; and (B) yarn composed of filaments of at least one metallic material selected from the group consisting of metals and metal alloys, and wherein Group II includes (A) filaments which are composed of one of at least one silicone polymer or a mixture of filaments of different silicone polymers and which are heat resistant; (B) filaments which are composed of one of at least one flexible plastic substance which is not a aromatic polyamide or filaments of a mixture of different flexible plastic substances which are not aromatic polyamides and which are heat resistant; (C) filaments which are composed of an outer layer and a metallic core, the outer layer being composed of filam
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: March 21, 2000
    Assignee: Rheinische Filztuchfabrik GmbH
    Inventor: Bruno Hennecken
  • Patent number: 5298322
    Abstract: A press pad for high-pressure multi-story presses for the production of high-pressure laminates, including a textile fabric including a plurality of yarns composed of aromatic polyamide, and metal filaments disposed in said textile fabric in an amount ranging from 10 to 25 weight percent, based on the total weight of the press pad, the metal filaments being helically wound around each of the aromatic polyamide yarns.
    Type: Grant
    Filed: June 11, 1991
    Date of Patent: March 29, 1994
    Assignee: Rheinische Filztuchfabrik GmbH
    Inventors: Bruno Hennecken, Paul Schmitz