Pressure sensitive adhesives for use on low energy surfaces
Assignee3M Innovative Properties Company
InventorsRichard L. Peloquin, Albert I. Everaerts, Kenneth D. Wilson, Stephen J. Galick
Life of this patent
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Abstract
A vinyl graphic marking film or label coated with a pressure sensitive acrylic adhesive designed to achieve high or permanent adhesion to polymeric low energy surfaces is disclosed. In addition to good adhesion to low energy surfaces, the graphic marking film or label may have microperforated or micro-rough edges which initiate tearing when removal is attempted. The article maintains flexibility and film strength for easy fabrication in graphic marking film or label manufacture.
Claims17
An acrylic pressure sensitive adhesive which comprises:
- a) about 100 parts by weight of an acrylic copolymer, said acrylic copolymer comprising from about 70-98% by weight of one or more monofunctional acrylates having nontertiary alkyl groups with between 1 and 14 carbon atoms and from about 30-% by weight of a polar monomer;
- b) about 10-40 parts by weight of a tackifier;
- c) about 3-10 parts by weight of a plasticizer;
- and
- d) optionally, a crosslinker;
- wherein the plasticizer is selected from the group consisting of polyoxyethylene aryl ethers, polyoxylpropylene aryl ethers, phosphate esters, sulfonamides, aromatic carboxylic acid esters, benzoic esters, and combinations thereof.
An adhesive film adapted for use on low energy surfaces which comprises:
- a) a polymeric backing;
- and
- b) a pressure sensitive adhesive applied to a surface of the polymeric backing, the pressure sensitive adhesive comprising:
- i) about 100 parts by weight of an acrylic copolymer, said acrylic copolymer comprising from about 70-98% by weight of one or more monofunctional acrylates having nontertiary alkyl groups with between 1 and 14 carbon atoms and from about 30-2% by weight of a polar monomer;
- ii) about 10-40 parts by weight of a tackifier;
- iii) about 3-10 parts by weight of a plasticizer;
- and
- iv) optionally, a crosslinker;
- wherein the plasticizer is selected from the group consisting of polyoxyethylene aryl ethers, polyoxypropylene aryl ethers, phosphate esters, sulfonamides, aromatic carboxylic acid esters, benzoic esters, and combinations thereof.
Dependencies are inferred from the claim text.