Abstract: A pressure-sensitive adhesive layer consists of a dried product of a water-dispersed pressure-sensitive adhesive composition. The water-dispersed pressure-sensitive adhesive composition contains a water-dispersible polymer, water, and polyacrylic acid. The polyacrylic acid content is above 0.1 parts by mass and 7 parts by mass or less with respect to 100 parts by mass of the water-dispersible polymer. A thickness of the pressure-sensitive adhesive layer is 10 ?m or more and 40 ?m or less.

Abstract: The double-sided pressure-sensitive adhesive sheet of the present invention includes a substrate film, a first pressure-sensitive adhesive layer, a second pressure-sensitive adhesive layer, and a release liner. The substrate film has a first surface and a second surface opposite the first surface. The first pressure-sensitive adhesive layer is disposed on the first surface, and has a first adhesive surface opposite the substrate film. The second pressure-sensitive adhesive layer is formed from a coating film of the pressure-sensitive adhesive composition applied on the second surface, and has a second adhesive surface opposite the substrate film. The release liner is in releasable contact with the first adhesive surface. The emission amount of toluene and ethyl acetate from the first pressure-sensitive adhesive layer on heating at 80° C. for 30 minutes is 10 ?g/g or less.

Abstract: A method of producing a double-sided pressure-sensitive adhesive sheet includes a step of applying a water-dispersed pressure-sensitive adhesive composition onto a release liner to form a coating film, a step of drying the coating film by heating to form a pressure-sensitive adhesive layer, a step of bonding a first surface of a substrate film to an exposed surface of the pressure-sensitive adhesive layer, a step of applying a water-dispersed pressure-sensitive adhesive composition onto a second surface of the substrate film to form a coating film, and a step of drying the coating film by heating to form a pressure-sensitive adhesive layer.

Abstract: A pressure-sensitive adhesive sheet 1 includes a plastic substrate 2, an adhesion-facilitating layer 3, and a pressure-sensitive adhesive layer 4 in the order in which they appear toward one side in a thickness direction. The adhesion-facilitating layer 3 includes an adhesive composition containing a polyester component and an oxazoline component. The pressure-sensitive adhesive layer 4 contains a water-dispersible polymer.

Abstract: A pressure-sensitive adhesive layer consists of a dried product of a water-dispersed pressure-sensitive adhesive composition. The water-dispersed pressure-sensitive adhesive composition contains a water-dispersible polymer, water, and polyacrylic acid. The polyacrylic acid content is above 0.1 parts by mass and 7 parts by mass or less with respect to 100 parts by mass of the water-dispersible polymer. A thickness of the pressure-sensitive adhesive layer is 10 ?m or more and 40 ?m or less.

Abstract: A water-dispersed pressure-sensitive adhesive composition includes a water-dispersible polymer and water. The viscosity X (Pa·s) and the dynamic surface tension Y (mN/m) at a life time of 100 milliseconds satisfy the following formulas (1) and (2): 0.15?X?1.25??(1) Y?19.

Abstract: A water-dispersed pressure-sensitive adhesive composition of the present invention includes a water-dispersible polymer, a carboxylic acid copolymer thickener, a polyacrylic acid thickener, and water. A ratio of the carboxylic acid copolymer thickener in the solid content of the water-dispersed pressure-sensitive adhesive composition is 0.1% by mass or more and 1.5% by mass or less. A ratio of the polyacrylic acid thickener in the solid content of the adhesive composition is 1% by mass or more and 3.7% by mass or less. A pressure-sensitive adhesive sheet of the present invention has a pressure-sensitive adhesive layer formed from the water-dispersed pressure-sensitive adhesive composition.

Abstract: Provided is a PSA sheet comprising a fabric sheet and a PSA layer laminated on the fabric sheet. The PSA layer comprises a base polymer and a tackifier resin. The base polymer is a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound. The PSA layer has a thickness greater than 100 ?m and less than 190 ?m.

Abstract: Provided is a PSA sheet comprising a fabric sheet and a PSA layer laminated on the fabric sheet. The PSA layer comprises a base polymer and a tackifier resin. The base polymer is a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound. The tackifier resin comprises a tackifier resin having a softening point below 120° C. and a tackifier resin having a softening point of 120° C. or higher. The fabric sheet has a thickness of 15 ?m or greater and 50 ?m or less as well as a bulk density of 0.25 g/cm3 or higher and 0.50 g/cm3 or lower.