Patents Assigned to Industrie-Entwicklungen Krupper
  • Patent number: 4613537
    Abstract: According to the invention, grip tapes based on plastic-coated supporting materials are described which have a supporting material comprising nonwoven, woven or knitted fabric having an extensibility before processing of at least 10% in the crosswise and/or lengthwise and/or diagonal direction, and an impregnation based on polyurethanes which is applied by means of wet coagulation. The grip tapes are obtained by soaking a supporting material of nonwoven, woven or knitted fabric and having an extensibility of at least 10% in the crosswise and/or lengthwise and/or diagonal direction in a solution of polyurethane-based impregnating agent, dissolved in a water-soluble solvent, passing the impregnated material through at least one coagulation bath comprising a mixture of the solvent with water, pressing the liquid out of the coagulate-coated supporting material, then rinsing the material with water and pressing it again and drying it, then cutting it as needed into strips.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: September 23, 1986
    Assignee: Industrie-Entwicklungen Krupper
    Inventor: Gunther Krupper