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US 4,397,905 AGranted
Adhesive tape
AssigneeHoechst Aktiengesellschaft
InventorsGerhard Dettmer, Peter Hammerschmidt
Life of this patent
Estimating the term…
Abstract
Disclosed is an adhesive tape comprising a support film of a synthetic thermoplastic polymer, preferably polyvinylchloride or polypropylene, and an adhesive layer on one side of it, wherein the support film has a thickness less than about 35 .mu.m and preferably is stretch-oriented. Provided on the surface of the support film facing away from the adhesive layer are elevations having a depth within a range of from about 5 to 20 .mu.m.
Claims12
An adhesive tape, comprising:
- a stretch-oriented and embossed support film of synthetic thermoplastic polymer having first and second sides and a thickness of less than about 35 .mu.m and having on its first side a plurality of elevations formed by embossing the film and having a height within the range of from about 5 to 20 .mu.m, and on its second side a plurality of depressions equal and opposite to said elevations;
- and
- a layer of pressure-sensitive adhesive on the second side of said support film.
Dependencies are inferred from the claim text.