PURPOSE: To obtain an adhesive tape excellent in adhesiveness, useful for e.g. fixing automotive internal trim or facing materials, and enabling the PP-based molded form as the substrate therefor to be recycled without needing being peeled off the substrate, by providing the surface of a base sheet consisting mainly of a PP-based resin with a specific tack agent layer.
CONSTITUTION: The objective adhesive tape can be obtained by providing (A) the surface of a base sheet consisting mainly of a PP-based resin with (B) a tack agent layer prepared by incorporating (1) 100 pts.wt. of a hydrogenated block copolymer of formula A-B-A or A-B (A is styrene polymer block; B is olefin polymer block obtained by hydrogenating butadiene polymer block or isoprene polymer block) with (2) 10-200 pts.wt. of a hydrogenated petroleum resin or terpene resin. Specifically, this adhesive tape can be produced by co- extrusion in a molten state of a resin for the base sheet and the tacky agent.
SHIMOURA YOSHIO
TERACHI SHINJI
