| 摘要 |
PROBLEM TO BE SOLVED: To provide a Fusuma (long sliding door) which does not cause warpage due to changes in room temperature or moisture. SOLUTION: The core material constituting fittings is formed in such a way that a plate-like core material is bonded and integrated with a fiber reinforced resin sheet wherein a plurality of continuous reinforced fibers made of glass long filaments having a diameter of 5-36μm are bundled and aligned in one direction and furthermore thermoplastic resin is impregnated while glass fiber content in the sheet is 40-80 wt.%. The core material constituting fittings thus comprised enables to form, when used as a core material for the sliding door, a long sliding door not smaller than 1,800 mm in length and hardly causing warpage, for having an elastic modulus of at least 60,000 N/cm<SP>2</SP>. COPYRIGHT: (C)2007,JPO&INPIT
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