DOUBLE-SIDED ADHESIVE TAPE, METHOD OF MAKING, METHOD OF USE, AND ARTICLES THEREBY ASSEMBLED

摘要

A foam tape having a multi-layer structure comprising a polyurethane foam core layer, at least one tie layer, adjacent one side of the polyurethane foam core layer, a first PSA film on one side of the first tie layer and a second PSA film, either on one side of a second tie layer or on one side of a polyester layer directly adjacent the opposite side of the polyurethane foam core layer, and a double-sided release layer on one side of the first PSA film. The foamed tape can be made by a process comprising applying a polymeric film to a first release layer to form a supported tie layer, referred to as Intermediate Product A, coating and drying a PSA composition on a second release layer to form a supported PSA coating, referred to as Intermediate Product B, laminating Intermediate Product B to Intermediate Product A which, after removing the release layer on the tie layer, forms Intermediate Product C comprising, in sequence, release layer, PSA film, and tie layer. A polyurethane foam precursor composition can be coated between a first and second Intermediate Product C, and the composition cured to form a polyurethane foam core layer.

主权项

1. A foam tape having a multi-layer structure comprising:
(a) a polyurethane foam core layer; (b) at least one tie layer on at least one side of the polyurethane foam core layer, wherein the tie layer is in direct adjacent contact with the polyurethane foam core layer; (c) a first PSA film on one side of the tie layer, on the side opposite to the side facing the polyurethane foam core layer, and a second PSA film on the opposite side of the polyurethane layer from the first PSA film; (d) a release layer on one side of the first PSA film, on the side opposite to the side facing the polyurethane foam core layer and in direct adjacent contact with the first PSA film.