Pressure sensitive adhesive products

Details Pressure sensitive adhesive products Pressure sensitive adhesive products

1979-11-02

1982-07-13

Lesmes, George F.

Stock material or miscellaneous articles

Layer or component removable to expose adhesive

Halogen containing compound

156289, 156334, 156344, 4272084, 428352, 428500, 428516, 428520, 526348, A61F 1302

Patent

active

043394850

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.
Chemical Abstract, 83, 194727z (1975).
Modern Plastics Encyclopedia, "Adhesive Bonding", p. 412, vol. 52, No. 10A, 1975-1976.

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