| 摘要 |
PROBLEM TO BE SOLVED: To enhance heating efficiency and sound-proof performance by laminating a hard planar body, a heat radiating plate and a hard foamed body sequentially and arranging a hot water supply pipe in the hard foamed body while setting the bending modulus of elasticity thereof within a specified range. SOLUTION: The sound-proof hot water heating floor comprises a hard planar body 1, a heat radiating plate, i.e., a planar heating element 2, and a hard foamed body 3 laminated sequentially. The hard foamed body 3 has bending modulus of elasticity in the range of 50-300 kgf/cm2 and comprises a continuously foamed layer of thermoplastic resin, a plurality of heavily foamed bodies of thermoplastic resin arranged on the continuously foamed layer, and a lightly foamed thin film of thermoplastic resin covering the outer surface of the heavily foamed body. A hot water supply pipe 5 is arranged in the hard foamed body 3. According to the structure, both thermal efficiency and sound-proof performance are enhanced while improving the walking feeling.
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