| 摘要 |
PROBLEM TO BE SOLVED: To provide a soundproof floor material A and a method of manufacturing the same for applying tongue and groove joints highly precisely and efficiently through cutting by taking construction performance and ease of use into account. SOLUTION: This soundproof floor material A includes a floor finish material 1 constituted by laminating a decorative layer 2, a surface reinforcing layer 3, a hard foaming body layer 4, and a rear surface reinforcing layer 5 sequentially and integrally and applying the tongue and groove joints having female and male tongue sections 10, 14 on the end face 1a of a butt end and having a total thickness of 2-6 mm and a cushion layer 20 laminated and integrated on/with the rear surface of the floor finish material 1 and made of a resin-made foaming body having a specific gravity of 0.1-0.4 and thickness of 1-6 mm. This soundproof floor material A has a total thickness of 3-12 mm. Each of the surface and rear surface reinforcing layers 3, 5 is formed of an inorganic fiber sheet filled with a moisture hardening type resin or a reaction type resin. The hard foaming body layer 4 is formed of a hard foaming body prepared by mixing a thermoplastic resin, a powdery filler, and a chemical foaming agent, foaming up to 1.8-3.0 times, and having a total specific gravity of 0.3-0.7 and is formed on the end face 1a of the butt end of the floor finish material 1 by the tongue and groove jointing through cutting. COPYRIGHT: (C)2011,JPO&INPIT
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