preestratificadas pressure sensitive adhesive structures.

1997 
SOME adhesive constructions pre-rolled pressure sensitive (PSA) comprises a first substrate, a coating of extractable material on a surface of the first substrate, a layer PSA ARRANGED ON COATING MATERIAL EXTRAIBLE, and a layer of TAKEOFF (DL) disposed on a surface of the PSA layer to form a continuous film that coats COAT PSA. IN A first and second embodiments of the construction, DL can be activated to form a sticky layer on top of layer PSA, for lamination to a second substrate. In a third embodiment, the DL INCLUDES Constituents, when activated, migrate into the layer PSA, to expose the surface STICKY LAYER TO A ROLLING PSA to a second substrate. PSA CONSTRUCTIONS pre-rolled ARE FULLY nonblocking to a temperature MINIMUM BLOCKER IN 24 HOURS about 50 ° C, at a pressure of about 40 kilopascals, thereby allowing said construction PSA prelaminated collected, STORED, AND / OR TRANSPORT BEFORE TO BE ROLLED without interference ADHESIVA, which takes place between continuous layers. In each mode embodiment, the DL can be activated in less than five seconds to provide a sticky layer with a time ENOUGH OF STUCK OPEN TO ALLOW THE ROLLING less than about 100 ° C.
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