Patents Assigned to Shaw Plastics Corporation
  • Synthetic cork-like material and method of making same
    Patent number: 4091136
    Abstract: A synthetic cork-like material for use as a closure for liquid containers which is composed of a fine celled polyolefin foam containing an ionomer and which may be formed by a foaming process.
    Type: Grant
    Filed: May 17, 1976
    Date of Patent: May 23, 1978
    Assignee: Shaw Plastics Corporation
    Inventors: John C. O'Brien, Herbert A. Ehrenfreund