Method of making a pressure-sensitive adhesive tape having a sub

Details Method of making a pressure-sensitive adhesive tape having a sub Method of making a pressure-sensitive adhesive tape having a sub

1987-01-07

1988-06-14

Pianalto, Bernard D.

Coating processes

With stretching or tensioning

427208, 4272088, 427204, 427284, 4273330, 427340, 427341, 427342, 427352, 4273855, B05D 510, B05D 3107

Patent

active

047511087

ABSTRACT:
A pressure-sensitive adhesive layer is crosslinked between carboxyl groups along one surface by polyvalent cations, thus making that surface substantially tack-free while leaving at least one broad surface of the layer tacky and pressure-sensitive. When a broad surface of the adhesive layer is thus made completely tack-free, the adhesive layer can be wound upon itself in roll form without a backing for convenient storage and shipment. Preferably a low-adhesion backsize coating covers the broad tack-free surface to insure that the adhesive layer can be unwound after prolonged storage without delaminating.

REFERENCES:
patent: Re24906 (1960-12-01), Ulrich
patent: 2294347 (1942-08-01), Bauer et al.
patent: 3740366 (1972-06-01), Sanderson et al.
patent: 3865770 (1975-02-01), Blake
patent: 4374883 (1983-02-01), Winslow
patent: 4440821 (1984-04-01), Komura et al.
patent: 4524087 (1985-06-01), Engel
patent: 4558888 (1985-12-01), Hanson et al.

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