Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1982-03-19
1984-01-10
Lesmes, George F.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156289, 156334, 156344, B32B 3100
Patent
active
044251769
ABSTRACT:
Pressure sensitive adhesive products or articles having one or more release layers and a pressure sensitive adhesive layer, said one or more release layer comprising a polyolefinic elastomer having a shearing modulus of less than 2.0.times.10.sup.8 dyne/cm.sup.2 and surface wettability expressed in terms of an equilibrium contact angle of more than 55.degree. with respect to a standard liquid, and said adhesive layer being composed mainly of a polyacrylate. To increase the adhesion between the release layer and a backing substrate, a reinforcing interlayer may be used. As the release layer, a mixture of the polyolefinic elastomer and polyethylene may be used. The release layer is then kept in contact with the adhesive layer over a given area to form a composite or integral layer thereof as by extrusion coating.
REFERENCES:
patent: 2541498 (1951-02-01), Calvert
patent: 4012560 (1977-03-01), Baatz et al.
patent: 4124431 (1978-11-01), Schramer et al.
patent: 4151319 (1979-04-01), Sackoff et al.
patent: 4288480 (1981-09-01), Grzywinski
Akimoto Saburo
Kobayashi Tadashi
Maruchi Sachio
Shibano Tomishi
Yakan Koji
Buffalow E. Rollins
Lesmes George F.
Sanyo-Kokusaku Pulp Co., Ltd.
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