To provide a thermoformable core material excellent in lightweight properties, rigidity, heat resistance, thermoforming properties, air impermeability, and sound absorbency, and an interior finish material for cars using the core material.
In the thermoformable core material A, on the surface of a porous material 1 in which heat resistant fibers are entangled and bound with each other by a thermoplastic resin, a surface side synthetic resin layer 2 of a thermoplastic resin having a melting temperature higher than that of the thermoplastic resin in the porous material 1 and a hot melt resin 3 layer are laminated/integrated with the layer 2 arranged inside, and on the back, a back side synthetic resin layer 4 of a thermoplastic resin having a melting temperature higher than that of the synthetic resin in the porous material is laminated/integrated. Numbers of through holes 5 ranging from the surface of the hot melt resin layer 3 to the back of the surface side synthetic resin layer 2 are formed in the core material, and the opening area of the through holes 5 is 0.2-3 mm2.
SUGIE YUKIHIRO
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