Unified pressure-sensitive adhesive tape
AssigneeMinnesota Mining and Manufacturing Company
InventorsPatrick G. Zimmerman, Gordon G. Johnson, Susan L. Korpela, Caroline L. Vernon
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Abstract
A pressure-sensitive adhesive tape comprising a plurality of superimposed layers, at least one outer layer being a pressure-sensitive adhesive layer, contiguous layers defining an interface therebetween, each of the layers comprising a photopolymerized matrix of polymeric chains; the polymeric chains extending from the matrix of one of the layers through the interface into the matrix of a contiguous layer; the polymeric chains comprising polymerized monomers having migrated from the matrix of each contiguous layer prior to polymerization, whereby the layers cannot be delaminated.
Claims14
A pressure-sensitive adhesive tape comprising a plurality of superimposed layers, contiguous layers comprising differing acrylic compositions, said layers having been simultaneously photopolymerized, at least one outer layer being an acrylic pressure-sensitive adhesive layer, said layer comprising at least one alkyl acrylate ester of a nontertiary alkyl alcohol, and a photoinitiator, contiguous layers defining an interface therebetween, each of said layers comprising a photopolymerized matrix of polymeric chains;
- said polymeric chains extending through said interface into the matrix of a contiguous layer;
- said polymeric chains comprising polymerized monomers having migrated from the matrix of each contiguous layer prior to polymerization, whereby said contiguous layers cannot be delaminated.
Dependencies are inferred from the claim text.