before foaming of the laminate of foam laminated sheet, the method of manufacturing before foaming of the laminate of foam laminated sheet, and a method for manufacturing of foam laminated sheet

摘要

PROBLEM TO BE SOLVED: To provide a laminate before foaming a foamed laminated sheet, which easily provides a desired expansion ratio and a foamed laminated sheet with suppressed discoloration over time of a foamed resin layer after foaming, the foamed laminated sheet being obtained by forming a resin layer containing a blowing agent by producing a film of a resin composition containing a resin component and a heat-decomposable blowing agent and, further, forming a foamed resin layer by foaming the resin layer containing a blowing agent, and to provide a production method of the laminate before foaming a foamed laminated sheet and a production method of the foamed laminated sheet.;SOLUTION: A laminate before foaming a foamed laminated sheet comprises at least a resin layer containing a blowing agent on a substrate where (1) the resin layer containing a blowing agent is formed by forming a film of a resin composition containing polyethylene, an ethylene-α-olefin copolymer, an azo-based heat-decomposable blowing agent, and a zinc-based foaming adjuvant, and where (2) the zinc-based foaming adjuvant includes zinc stearate and zinc octanoate.;COPYRIGHT: (C)2015,JPO&INPIT