THERMOPLASTIC RESIN LAMINATED SHEET AND DEEP CONTAINER BY DEEP DRAWING

摘要

PROBLEM TO BE SOLVED: To prevent the generation of appearance such as yellowing or weeping by enhancing the high temp. tensile strength of polypropylene a polyproplylene resin compsn. constituting the polypropylene non-foamed film layer constituting the inner surface of a container. SOLUTION: After a polypropylene non-foamed film is preliminarily laminated to the single surface of a styrenic resin foamed sheet by dry lamination, a styrenic resin non-foamed film is laminated to the opposite surface thereof. As the styrenic resin constituting the foamed or non-foamed layer, a compsn. prepared by copolymerizing a small amt. of rubber or other vinyl monomer with a styrene monomer used other than polystyrene. Polypropylene or the polypropylene resin compsn. constituting the polypropylene non-foamed film has a strain curing index of stretch viscosity of 10 or more at 180 deg.C.