B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 3/26 (2006.01) B32B 25/08 (2006.01) B32B 25/20 (2006.01) C09J 7/02 (2006.01)
Patent
CA 2058766
ABSTRACT OF THE DISCLOSURE This invention relates to improved polymer-pressure sensitive adhesive combinations, particularly in the form of laminates, and methods of producing same. This invention improves the bond strength of the pressure sensitive adhesive to the polymer layer by priming the polymer surface with a curable urethane primer before applying the pressure sensitive adhesive to the polymer surface. If the polymer surface is not "active" to the curable urethane primer, the polymer surface is first activated with a silicon-containing treating agent. The laminates of this invention have superior bond strength, especially long-term bond strength. Of particular interest are the embodiments of this invention wherein the polymer is a silicone foam and the pressure sensitive adhesive is either acrylic or silicone adhesive.
Barnard Boyd A.
Ragland G. William
Atd Corporation
Barnard Boyd A.
Marks & Clerk
Ragland G. William
LandOfFree
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