Abstract:
A pressure-bonding adhesive member having a superior positional-adjustment function relative to an adherend having a surface mainly constituted of low-polarity plastic typified by polypropylene, and capable of adhering to the adherend with a sufficiently high adhesive force after positional adjustment. The pressure-bonding adhesive member containing an adhesive layer and plural convex parts formed on one surface of the adhesive layer, wherein, when the convex parts are in contact with a polypropylene plate and the adhesive layer is not in contact with the polypropylene plate, the adhesive member shows a frictional force of not more than 0.6 N/cm2 on the polypropylene plate and a shear adhesive force of not less than 50 N/cm2 to the polypropylene plate.
Abstract:
The pressure-sensitive adhesive composition provided by the present invention comprises an acrylic polymer as a base polymer and a tackifier resin having a softening point of 125° C. or above. The tackifier resin content is less than 20 parts by mass relative to 100 parts by mass of the acrylic polymer.
Abstract:
A separator containing a substrate and a release layer formed on at least one side of the substrate wherein the separator shows a strain of not more than 7% when a load of 5N/20 mm is applied for one minute in the pulling direction, and when the substrate is cut in half in the thickness direction to divide the separator into two, an apparent elastic modulus in the pulling direction of one of the divided separators is larger than an apparent elastic modulus in the pulling direction of the other divided separator.
Abstract:
Provided is a double-faced PSA sheet comprising a first PSA layer formed of a first PSA composition comprising an acrylic polymer PA as a base polymer and a second PSA layer formed of a second PSA composition comprising an acrylic polymer PB as a base polymer provided respectively on a first face and a second face of a substrate. The weight average molecular weights MwA and MwB of the dried THF-soluble portions of the first and the second PSA compositions satisfy the next inequalities: MwA≧80×104; MwB
Abstract:
Provided is a pressure-sensitive adhesive (PSA) product having specifications in which the level of volatile organic compound emissions has been minimized, and effectively displaying those specifications. The PSA product includes a PSA layer having an adhesive face capable of attaching to an adherend, and a backing sheet disposed on a back face of the PSA layer. The PSA layer produces toluene emissions of at most 20 μg/g and produces total volatile organic compound emissions of at most 300 μg/g. The backing sheet has a mark in a color selected from green and blue displayed on a back face thereof.
Abstract:
An aqueous dispersion-type acrylic adhesive composition of core-shell structured acrylic copolymer particles dispersed in an aqueous medium, the particles containing core layer (A) containing acrylic polymer (A) and shell layer (B) containing acrylic polymer (B), whereinthe acrylic polymer (B) has a glass transition temperature of not less than 30° C. and the acrylic polymer (A) has a glass transition temperature lower than that of the acrylic polymer (B).