Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1979-08-23
1981-12-01
McCamish, Marion
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
4274071, 427411, 428347, 428348, 428349, 428352, 428913, 428914, B32B 300
Patent
active
043037178
ABSTRACT:
A novel heat release layer for use in connection with decalcomania paper and in decalcomanias which include a vitreous design layer surrounded by a heat release layer and a heat activatable adhesive layer is disclosed. In particular, the novel heat release layer disclosed comprises a combination of a normally solid straight chain, primary aliphatic oxyalkylated alcohol with either/or (1) a normally solid polyethylene glycol having an average molecular weight of greater than about 1,000, and (2) an amide of a fatty acid. Preferably, the oxyalkylated alcohol has a molecular weight above about 1350, the polyethylene glycol is present in the heat release layer in an amount of from about 1 to 50 weight percent thereof, and/or the amide of a fatty acid is present in the heat realease layer in an amount of from about 1 to 25 weight percent thereof. In addition, methods of preparing such heat release decalcomanias are also disclosed, including applying a heat release layer to a backing sheet, applying a design layer to the heat release layer, and applying a heat activatable adhesive layer to the design layer, again wherein the heat release layer is as described above. A novel combination of heat release layers and heat activatable adhesive layers is also disclosed, including the heat release layer described above in combination with a heat activatable adhesive layer including an acrylic resin and a tackifier for the acrylic resin, and including an organic solvent therein.
REFERENCES:
patent: 4068033 (1978-01-01), Meade
patent: 4117182 (1978-09-01), Andrews
Commercial Decal, Inc.
McCamish Marion
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