SOUNDPROOF COATING MATERIAL AND SOUNDPROOF DRAIN PIPE

摘要

A soundproof coating material and a soundproof drain pipe. The soundproof coating material (11) comprises a soundproof layer (12) coated on the outer periphery of a pipe (10) having a sound insulating outer layer (14) with an elastic modulus of 1.0 × 10<SUP>6</SUP> to 3.0 × 10<SUP>6</SUP>Pa and a sound absorbing inner layer (15) with an elastic modulus of 0.5 × 10<SUP>3</SUP> to 2.0 × 10<SUP>3</SUP>Pa so that the soundproof layer (12) can be securely and smoothly mounted on the outer periphery of the pipe (10). Accordingly, in the soundproof drain pipe (20) thus obtained, the soundproof layer (12) is allowed to slide on the outer periphery of the pipe (10) and the soundproof layer (12) is prevented from being fallen off from the outer periphery of the pipe (10). As a result, the handling of the soundproof drain pipe can be improved and supply/drain noise therefrom can be effectively reduced.