Nitto-denko Corporation

Takashi Imoto

Akinori Nishio

Tsuneyuki Amano

An identification sheet (X) according to the present invention includes a backing sheet () and a pressure-sensitive adhesive sheet (). The backing sheet () bears a distinguishing mark (M). The pressure-sensitive adhesive sheet () has a multilayer structure including a substrate layer () and a pressure-sensitive adhesive layer (). The pressure-sensitive adhesive layer () is removably attachable to the backing sheet (). The pressure-sensitive adhesive sheet () bears a distinguishing mark (M). The identification sheet (X) as above is suitable for keeping on surely providing the admissibility of evidence of a collected target material to be identified.

Sheet for identification

A pressure-sensitive adhesive product contains a substrate having formed on at least one surface thereof a pressure-sensitive adhesive layer, wherein the substrate is formed from a styrene-based resin composition and the pressure-sensitive adhesive layer is formed from an acrylic pressure-sensitive adhesive containing an acrylic polymer, a liquid paraffin, and a rosin-based tackifying resin. In the acrylic pressure-sensitive adhesive, the ratio of the liquid paraffin is preferably 6 to 50 parts by weight based on 100 parts by weight of the acrylic polymer and the ratio of the rosin-based tackifying resin is preferably 1 to 30 parts by weight based on 100 parts by weight of the acrylic polymer. The liquid paraffin may have a number-average molecular weight of 300 to 500 and may have a dynamic viscosity at 37.8&#xb0; C. of 6 to 80 mm/second.

Growing community of inventors

Ibaraki, Japan

Takashi Imoto