Being the additional strength sheet for the resin molded article and the additional strength sheet for the resin molded article which has

摘要

PROBLEM TO BE SOLVED: To provide a lightweight reinforcing sheet for a resin molded product, lightweight and easily reinforcing the resin molded product while preventing the degradation or melting of the resin molded product by heating at a comparatively low temperature without impairing appearance, and a reinforcing structure and a reinforcing method for the resin molded product.;SOLUTION: The reinforcing sheet 1 for the resin molded product includes a restriction layer 3, and a reinforcing layer 2 laminated on the restriction layer 3 and formed of a heat-adhesive type adhesive composition containing a polymer with a monomer containing conjugated dienes, and a tackifier. The reinforcing layer 2 is stuck to a polypropylene plate with a thickness of 2.0 mm and heated at 80°C for 10 minutes. The reinforcing sheet 1 with a flexural strength of 3 N or higher at a displacement of 1 mm after heating and a maximum flexural strength of 30 N or higher, is stuck to the resin molded product 4 and heated at 80-100°C. The restriction layer 3 and the resin molded product 4 can thereby firmly stick to each other through the reinforcing layer 2, and the resin molded product 4 can be surely reinforced by the reinforcing sheet 1 for the resin molded product.;COPYRIGHT: (C)2010,JPO&INPIT