Patents Assigned to Japan Polypro Backing Co. Ltd.
  • Primary backing of foamed polypropylene tapes and tufted carpets produced from the same
    Patent number: 4482595
    Abstract: A backing for tufted carpets, having improved tufting properties such as a small penetration resistance to tufting needles, a uniform distribution of values of penetration resistance and yet superior intrinsic properties, and a tufted carpet produced from the backing are provided, which backing is produced by weaving polypropylene tape yarns oriented by stretching, these polypropylene tape yarns comprising foamed polypropylene tape yarns having a foam content of 1.0 to 20%.
    Type: Grant
    Filed: March 20, 1984
    Date of Patent: November 13, 1984
    Assignees: Chisso Corporation, Japan Polypro Backing Co. Ltd.
    Inventors: Kusuo Fujishita, Hideshi Sakamoto, Tomio Yamazawa, Junichi Yamaguchi