Soundproof coating material and soundproof drain pipe

Abstract

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

Description

technical field [0001] The present invention relates to a sound-insulating covering material and a sound-insulating drainage pipe suitable for pipes of water supply and drainage equipment and air-conditioning equipment of buildings. Specifically, it can be installed more firmly and smoothly around the pipe, has excellent operability, and can effectively reduce water supply and drainage noise. Background technique [0002] In recent years, people have increasingly pursued the comfort of the indoor environment and living space, and paid more attention to noise countermeasures. The development of practical and reasonable countermeasures to prevent water supply and drainage noise such as piping has continued to progress among industries. [0003] In response to these needs, a sound-absorbing layer composed of air spacers, glass wool, felt, etc. is laminated on a sound-insulating layer composed of asphalt sheets to integrate them. [0004] However, in the above-mentioned sound-i...

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Problems solved by technology

[0010] However, when the sound-insulating layer is circularly covered around the pipe, depending on the types of the sound-insulating layer, that is, the sound-insulating outer layer and the sound-absorbing inner layer, the sound-insulating layer may not fit smoothly around the pipe, or may be difficult to follow along the pipe. surrounding phenomena

[0011] In this case, the sound insulation layer cannot be covered with the cylindrical heat shrinkable film, or the heat shrinkable film is covered with the cylindrical heat shrinkable film, and when the sound insulation layer is installed around the pipe, the sound insulation layer around the pipe will be affected. Wrinkles, sufficient sound insulation performance cannot be ensured; or the sound insulation layer cannot slide around the pipe; or abnormal phenomena such as the sound insulation layer falling off the pipe circumference during installation or transportation occur

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