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US 6,110,552 AGranted
Release liners for pressure sensitive adhesive labels
AssigneeFLEXcon Company, Inc.
InventorsJames M. Casey, David A. Kitch, John M. Becker
Life of this patent
Estimating the term…
Abstract
A release liner for use with face stocks for pressure sensitive labels, tapes, decals and other products formed from sheet and roll stock. A filled polymer is laminated to one side of a paper web. An extrudate is laminated to the other side of the paper substrate to form a release liner. The filled polymer has paper-like properties and replaces paper tissue back liners.
Claims22
A composite release liner for use with label face stock, said release liner comprising:
- a paper substrate having first and second sides;
- and
- a paper-like polymer base layer extrusion coated onto the first side of said paper substrate, the polymer of said base layer being selected from the group consisting of polypropylene, high density polyethylene, medium density polyethylene, low density polyethylene, high molecular weight HDPE, linear low density polyethylene, and straight chained or branched or blends thereof, said paper-like polymer base layer containing filler material and having an exposed surface with a roughness of between about 10 to 400 Sheffield units and with coefficients of static and kinetic friction of between about 0.1 to 0.6.
Dependencies are inferred from the claim text.