Patents Assigned to VEB Forster Tuchfabriken
  • Patent number: 4794678
    Abstract: A method is provided for the determination and elimination of visible defects in textile webs, wherein the web is moved in the longitudinal direction over a defect seeking and registering area, and the surface position of visible defective areas, such as material deficiencies or excesses with regard to fiber components of the web are located in their surface dimension by known means during the movement of the web, as compared to the adjacent areas of the web. The defective areas are registered as a deviation from the reference condition, and the web is subsequently stopped with the defect in a position above a needle base into which felting needles are sunk. In the case of material deficiencies, the defective areas are supplied with donor material from a reserve, to control their defect by pushing the donor material into the web and stitching it to the defective area with at least two felting needles at 50 to 500 perforations per cm.sup.
    Type: Grant
    Filed: November 9, 1983
    Date of Patent: January 3, 1989
    Assignee: VEB Forster Tuchfabriken
    Inventors: Ingeborg Reim, Gerhard Pohl, Wolfgang Gotzke, Dieter Wahnberger, Lothar Postel, Irmgard Kindlein, Rudolf Vatter, Manfred Greschke
  • Patent number: 4554715
    Abstract: A method for the finishing of textile sheets, in which textile sheets for outer wear, upholstered furniture and car seat covers, as well as for decoration, preferably made of yarns having yarn strengths typical for carded yarns and/or worsted yarns (for example, ring yarns, OE-yarns, MJS yarns, friction yarns), are adjusted in a "custom-made" fashion, according to the sheet forming process. Textile sheet is supplied to a needling process alone, or together with the most varied sheets (for example, fleece, woven materials, foam materials, etc) or warps as well. Because of the needling process, by means of which the fibers are displaced from one layer into another with 50 to 1200 stitches per cm.sup.2 by felting needles, preferably CB notched needles, there is a permanent layering which, however, for the production of sheets with naps, can be cut as well.
    Type: Grant
    Filed: February 24, 1984
    Date of Patent: November 26, 1985
    Assignee: VEB Forster Tuchfabriken
    Inventors: Ingeborg Reim, Gerhard Pohl, Wolfgang Gotzke, Dieter Wahnberger, Lothar Postel, Irmgard Kindlein, Rudolf Vatter, Manfred Greschke