Polypropylene adhesive tape

Details Polypropylene adhesive tape Polypropylene adhesive tape

1986-01-17

1987-12-29

Ives, P. C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428166, 428172, 428216, 428332, 428353, 428354, 428414, 428451, 428516, 428910, 2641761, 264345, 427 40, B32B 300, C09J 702

Patent

active

047160683

ABSTRACT:
Disclosed is an adhesive tape based on a co-extruded, three-layer polypropylene base film which has been biaxially stretch-oriented in at least three stages and has been subjected on at least one side to corona treatment. The base film comprises a base layer and two covering layers. The base layer comprises polypropylene. The covering layer adjacent the adhesive layer includes polypropylene modified with a natural or synthetic resin having a softening point of about 70.degree. to 170.degree. C., and the other covering layer includes polypropylene modified with a diorganopolysiloxane. The new adhesive tape possesses high values of mechanical properties. The tape has good printability, and it does not contain an adhesion-promoting layer for the adhesive, nor a separating layer (release coat), since such layers are not required. The tape can also be processed without appreciable draw-off noises.

REFERENCES:
patent: 4348457 (1982-09-01), Rosenthal et al.
patent: 4414261 (1983-11-01), Nanbu
patent: 4419411 (1983-12-01), Park
patent: 4447485 (1984-05-01), Aritake
patent: 4502263 (1985-03-01), Crass et al.
patent: 4595625 (1986-06-01), Crass et al.

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