Patent ID: 7758958

Claim:
A pressure-sensitive adhesive sheet comprising a substrate and a pressure-sensitive adhesive layer on both sides thereof, wherein the pressure-sensitive adhesive layers are of a water-dispersion type acrylic pressure-sensitive adhesive containing: a water-dispersion type acrylic polymer containing as a main component an alkyl (meth)acrylate represented by the following formula (1): wherein R 1 represents a hydrogen atom or a methyl group and R 2 represents an alkyl group having 2 to 14 carbon atoms, and a tackifying resin-containing emulsion, wherein the tackifying resin has a softening point of 130° C. to 170° C., and wherein a diffusing amount of formaldehyde is less than 3 μg/gm 3 and a diffusing amount of toluene is 10 μg/g or less.