Patents Examined by Merrell C. Bashion, Jr.
  • Low temperature shock resistant release liner
    Patent number: 5167995
    Abstract: Release liners comprising support sheet and face layer, the face layer comprising one or more of the following: a copolymer of ethylene and at least one polar commonomer, or a copolymer of propylene and at least one polar comonomer, or blends of such copolymers. Such release liners provide low temperature shock resistance and smooth, substantially uniform release characteristics when applied to acrylic pressure-sensitive adhesives.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: December 1, 1992
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Michael A. Johnson, Milton R. Gates, Norihito Shibahara