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US 6,210,767 B1Granted
Release liner base stock for printed films or labels
AssigneeInternational Paper Company
InventorGary H. Knauf
Life of this patent
Estimating the term…
Abstract
A release liner carrier web including a paper layer, a release layer including a polypropylene layer coated onto the substrate and a silicone release agent coated onto the polypropylene coating layer. The liner further including a second coating layer made up of an acrylic resin type material for sealing the paper substrate and preventing curling and contamination of a label or printed film adhesively laminated thereon.
Claims1
A release liner comprising:
- (a) a paper substrate having a front side and a back side;
- (b) a polypropylene coating layer located on said front side of said paper substrate;
- (c) a silicone coating layer located on said polypropylene coating layer;
- and
- (d) a protective sealant layer selected from the group consisting of an acrylic resin, polyvinylidene dichloride and polyvinyl alcohol located on said back side of said paper substrate.
2 more elements
Dependencies are inferred from the claim text.