Adhesive sheet

A method for using an adhesive sheet which comprises attaching an adhesive sheet to a surface of a plasticized vinyl chloride resin article, wherein the adhesive sheet is an adhesive sheet for attaching to a plasticized vinyl chloride resin article, which comprises a film substrate having a thickness of 25 to 200 μm and having a flow direction breaking strength of 10 N/15 mm to 220 N/15 mm and a cross direction breaking strength of 10 N/15 mm to 220 N/15 mm and a heat-sensitive adhesive layer having a thickness of 10 to 25 μm formed on a backside surface of the film substrate, wherein the heat-sensitive adhesive layer is composed of a resin comprising a crystalline polyester resin having a heat of melting crystal of 5 to 50 J/g in measuring by a differential scanning calorimeter as a main component, wherein a content ratio of the crystalline polyester resin comprised in the resin composing the heat-sensitive adhesive layer is 50 to 100 percent by mass, a melting point of the crystalline polyester resin is 50 to 200° C., the film substrate is composed of a resin selected from the group consisting of polybutylene terephthalate resin, polyethylene terephthalate resin, acetate resins, polystyrene resins, and vinyl chloride resins, the crystalline polyester resin is produced from a combination of a polyol and a polyhydric carboxylic acid, and the polyhydric carboxylic acid is selected from the group consisting of malonic acid, phthalic acid, terephthalic acid, isophthalic acid, tetrahydro phthalic acid, methyl tetrahydro phthalic acid, hexahydro phthalic acid, methyl hexahydro phthalic acid, succinic acid, glutaric acid, hexachloro endomethylene tetrahydrophthalic acid, endomethylene tetrahydrophthalic acid, endomethylene hexahydrophthalic acid, adipic acid, sebasic acid, azelaic acid, dimer acid, decadicarboxylic acid, cyclopentane dicarboxylic acid, and mixtures thereof.