Low temperature shock resistant release liner
AssigneeMinnesota Mining and Manufacturing Company
InventorsMichael A. Johnson, Milton R. Gates, Norihito Shibahara
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Abstract
Release liners comprising support sheet and face layer, the face layer comprising one or more of the following: a copolymer of ethylene and at least one polar commonomer, or a copolymer of propylene and at least one polar comonomer, or blends of such copolymers. Such release liners provide low temperature shock resistance and smooth, substantially uniform release characteristics when applied to acrylic pressure-sensitive adhesives.
Claims19
A flexible release liner comprising (1) a support sheet having two major surfaces and (2) a face layer on one of said major surfaces that is continuous and comprises one or more of the following:
- a copolymer of ethylene and at least one polar comonomer, or a copolymer of propylene and at least one polar comonomer, or blends of such copolymers, wherein said support sheet and said face layer are substantially free of migratory plasticizers and silicones.
Dependencies are inferred from the claim text.