Adhesive tape

Details Adhesive tape Adhesive tape

1982-09-14

1983-11-08

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428214, 428215, 428216, 428343, 428353, 428354, 428515, 428516, 428520, B32B 702, C09J 702

Patent

active

044142617

ABSTRACT:
An adhesive tape comprises a base sheet and an adhesive layer coated on one side of the base sheet, characterized in that said base sheet comprises an intermediate layer made of a crystalline polypropylene containing from 25 to 35% by weight of a petroleum resin and outer layers made of a crystalline polypropylene laminated on both sides of the intermediate layer, said intermediate layer having a thickness within a range of from 60 to 90% of the total thickness of the base sheet and the layers of the base sheet being biaxially oriented so that the orientation in the longitudinal direction is greater than the orientation in the transverse direction.

REFERENCES:
patent: 4137362 (1979-01-01), Miki et al.
patent: 4173676 (1979-11-01), Asakura et al.
patent: 4335171 (1982-06-01), Zenk

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