There is provided a preparation method for a porous pressure sensitive adhesive article, a porous pressure sensitive adhesive article, and an abrasive pad. According to an example of the present application, as a porous pressure sensitive adhesive article including a pressure sensitive adhesive layer formed on a porous article, an article having excellent resistance to an external shear strength and to peeling can be provided. Further, according to the above method, the porous article can be attached firmly to a large-area adherent. In an example, the porous article may be an abrasive pad.

Pressure sensitive adhesive compositions containing 92 to 99.9 parts of a block copolymer adhesive composition and 0.1 to less than 8 parts of an acrylic adhesive composition are described. Tapes including such adhesives, and methods of making such tapes are also described.

The precompressed sealing tape for sealing a joint has an elastically re-expandable foam strip. The sealing tape also has a sheet-like wrapping, which at least partially surrounds the foam strip, and a strip-like element, which is arranged in the area of a lower transverse surface of the foam strip and which has greater flexural strength than the foam strip. A first section of the sheet-like wrapping is arranged between the lower transverse surface of the foam strip and the strip-like element.

The foam sheet of the present invention has a stress relaxation ratio of 23% or more and a 25% compressive strength of 1,000 kPa or less. The pressure-sensitive adhesive tape of the present invention includes the foam sheet of the present invention and a pressure-sensitive adhesive material provided on at least one surface of its multilayered foam sheet. The present invention can provide a foam sheet that can increase a permanent strain and a pressure-sensitive adhesive tape including the foam sheet.