Patent ID: 8298660

Claim:
An adhesive tape substrate composed of a molded product of a flame-retardant polyolefin resin composition, which is not cross-linked during or after a forming process thereof, wherein the flame-retardant polyolefin resin composition comprises the following components A-D and is substantially free of a halogen atom: component A: a thermoplastic resin of at least one member selected from the group consisting of an ethylene-ethyl acrylate copolymer and an ethylene-vinyl acetate copolymer; component B: a polymer alloy of homopolypropylene (h-PP) and ethylene-propylene rubber (EPR) or a polymer alloy of random polypropylene and ethylene-propylene rubber (EPR); component C: a modified polypropylene which is obtained by grafting a maleic anhydride on an unmodified polypropylene and having a weight average molecular weight of 10,000-80,000 and an acid value of 20-60 mg KOH/g; component D: an inorganic metal compound; and wherein the mixing weight ratio of component A, component B and component C (component A:component B:component C) is 10-60:89-30:1-10.