Patent ID: 8449019
Filing Date: 2013-05-28
Classification: B29C,B29K,B29L,B32B,B60R,Y10T

Abstract:
1. A vehicle interior finishing laminate sheet provided with a core member consisting of a polypropylene resin foam board, wherein the polypropylene resin foam board is formed from a non-crosslinked polypropylene resin exhibiting a strain hardening phenomenon in which the non-crosslinked polypropylene resin is elongated in a molten state and a viscosity of the non-crosslinked polypropylene resin rises suddenly before cutting, the non-crosslinked polypropylene resin having a semi-crystallization time such that crystallization begins before a highest viscosity of foamed resin is reached, wherein the polypropylene resin foam board is extrusion molded into a plate shape, and wherein the polypropylene resin foam board has an interconnected cell ratio of 50% or higher and a foaming extent of 10- to 50-fold.