Pressure-sensitive adhesive tape having improved toughness

Details Pressure-sensitive adhesive tape having improved toughness Pressure-sensitive adhesive tape having improved toughness

1987-03-25

1989-02-28

Herbert, Thomas J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428492, 428500, 428517, 604389, C09J 702, A61F 1316, B32B 2708

Patent

active

048084743

ABSTRACT:
Pressure-sensitive adhesive tapes which have improved toughness for use as diaper closure tapes are provided. The tapes have a backing of a substantially untensilized, tough, ductile film that is a blend of crystalline isotactic polypropylene and a compatible flexible polymer, i.e. a polymer having a flexural modulus lower than said crystalline isotactic polypropylene to increase the toughness of the film, and a coating of a pressure-sensitive adhesive on one side of the film.

REFERENCES:
patent: 3700614 (1972-10-01), Schenkerberg
patent: 3941859 (1976-03-01), Batiuk et al.
patent: 3993826 (1976-11-01), Butler et al.
patent: 4087485 (1978-05-01), Huff
patent: 4237889 (1980-12-01), Gobran

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