Release liner base stock for printed films or labels
AssigneeInternational Paper Company
InventorGary H. Knauf
Life of this patent
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Abstract
A release liner based stock for use as a carrier web including a paper substrate having an upper surface and a lower surface. A release agent is coating on the top of the upper surface. The unique soap-based acrylic layer discourages curling of the base stock release liner, fiber pick-off contamination from the uncoated side of the paper substrate, and maintains a consistent peel off force required for removing a label from the release liner and deploying it on a target object.
Claims21
A release liner base stock, for dispensing die cut film labels onto a surface, comprising:
- a paper substrate having a front side and a back side;
- a polypropylene coating layer located on said front side of said paper substrate;
- and
- a protective sealant layer located on said back side of said paper substrate selected from the group consisting of:
- a soap-based acrylic resin, polyvinylidene dichloride, starch, styrene butadiene rubber latex;
- and polyvinyl alcohol located on said back side of said paper substrate.
A release liner base stock, for dispensing die cut film labels onto a surface, consisting of:
- a paper substrate having a front side and a back side;
- a polypropylene coating layer located on said front side of said paper substrate;
- and
- a protective sealant layer located on said back side of said paper substrate selected from the group consisting of:
- an acrylic resin, polyvinylidene dichloride, and polyvinyl alcohol located on said back side of said paper substrate.
Dependencies are inferred from the claim text.