| 摘要 |
PROBLEM TO BE SOLVED: 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. SOLUTION: 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 mm<SP>2</SP>. COPYRIGHT: (C)2004,JPO
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