Olefin Polymer Or Copolymer Sheet Or Film (e.g., Polypropylene, Polyethylene, Ethylene-butylene Copolymer, Etc.) Patents (Class 442/290)
  • Patent number: 5645933
    Abstract: A monoaxially oriented material of a longitudinally monoaxially oriented reticular web (a), a transversely monoaxially oriented reticular web (b) or a monoaxially oriented multi-layer tape (c) which comprises a polypropylene resin layer and an adhesive layer comprising a mixture of polypropylene resin and polyethylene resin and laminated on one surface or both surfaces of the polypropylene resin layer, and a polypropylene woven or non-woven fabric prepared by laminating crosswise or weaving the monoaxially oriented materials with interposing the adhesive layer so that the orientation axes of the materials may intersect; and a method for preparing the polypropylene woven or non-woven fabric and a heat-resistant reinforced laminate material.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: July 8, 1997
    Assignee: Nippon Petrochemicals Company, Limited
    Inventors: Suehiro Sakazume, Tsutomu Miyamoto, Hiroshi Shimizu
  • Patent number: 5633075
    Abstract: A cable splice case or other article for environmental sealing comprises a composite material having multifilament fibers therein, which fibers are blocked in order to prevent passage of fluid through the material in a direction parallel to its major surfaces.
    Type: Grant
    Filed: July 7, 1994
    Date of Patent: May 27, 1997
    Assignee: Raychem Limited
    Inventors: George B. Park, Frank J. Lowe, George M. J. Ganbuehler, Norman Hutt, Stephen A. Webb, Hendrick Graulus