Adhesive sheet
AssigneeNew Oji Paper Co., Ltd.
InventorsHideaki Suzuki, Kousuke Hamada
Life of this patent
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Abstract
Disclosed is an adhesive sheet comprising a base sheet, an undercoat layer formed on the base sheet, a release agent layer formed on the undercoat layer, an adhesive layer formed on the release agent layer and a face stock disposed on the adhesive layer, wherein the undercoat layer comprises (a) a copolymer obtained by emulsion-copolymerizing at least one hydroxyl group-containing (meth)acrylic ester with at least one of other monomers copolymerizable therewith and (b) a pigment.
Claims12
A pressure sensitive adhesive sheet for non-impact printing comprising a base sheet, an undercoat layer formed on said base sheet, a release agent layer formed on said undercoat layer, a pressure sensitive adhesive layer formed on said release agent layer and a face stock disposed on said pressure sensitive adhesive layer, wherein said undercoat layer comprises (a) a copolymer obtained by emulsion-copolymerizing at least one hydroxyl group-containing (meth)acrylic acid ester with at least one of other vinyl monomers copolymerizable therewith and (b) a pigment, Wherein the proportion of the hydroxyl group containing (meth)acrylic acid ester based on the total monomers in the copolymer is about 0.5-30 weight % and the proportion of said other vinyl monomers copolymerizable therewith based on the total monomers in the copolymer is 70-99.5 weight %, wherein the copolymer is at least 55 weight in toluene-insoluble gel fraction, wherein the proportion of the pigment is within the range of about 50-150 parts by weight per 100 parts by weight of the copolymer, and wherein the pressure sensitive adhesive layer is present in an amount of about 5-50 g/m.sup.2 on a dry basis.
Dependencies are inferred from the claim text.