Silent polyvinyl chloride drain pipe

Abstract

The present invention is silent polyvinyl chloride drain pipe and its making process, and the silent polyvinyl chloride drain pipe features the extruded sound absorbing core layer between the outer layer and the inner layer. The sound absorbing core layer is produced with material including polyvinyl chloride in 100 portions, chlorinated polyvinyl chloride in 15-150 portions and barium sulfate in 50-500 portions. It has advantages of 2.7-12.9 dB lowered noise compared with common polyvinyl chloride drain pipe, rather high impact strength and tensile strength, simple production process and convenient use.

Description

technical field [0001] The invention relates to a drainage pipe, in particular to a polyvinyl chloride silent drainage pipe which can significantly reduce drainage noise. Background technique [0002] Polyvinyl chloride (UPVC) drainage pipes are widely used all over the world because of their low cost, beautiful appearance, convenient installation and maintenance, and long service life. But it has a fatal weakness that it makes a lot of noise when draining water, which affects the quietness of the living room and sometimes wakes people up from their sweet dreams. The reason why the traditional drainpipe has a lot of noise is that there is no strong sound-absorbing material such as barium sulfate in the drainpipe component. In the face of noise, people have made a lot of efforts, and have successively developed various noise-reducing drainage pipes, such as: Japanese Patent Laid-Open No. 5-271429, the title of the invention is "sound-proof pipe", which ...

AI Technical Summary

Problems solved by technology

But it has a fatal weakness that it makes a lot of noise when draining water, which affects the quietness of the living room and sometimes wakes people up from their sweet dreams.

The reason why the traditional drainpipe has a lot of noise is that there is no strong sound-absorbing material such as barium sulfate in the drainpipe component

In the face of noise, people have made a lot of efforts, and have successively developed various noise-reducing drainage pipes, such as: Japanese Patent Laid-Open No. 5-271429, which discloses a kind of pipe that can make ordinary Noise reduction technology for water supply and drainage pipes. The sound insulation pipe is mainly composed of vinyl chloride resin, plasticizer, barium sulfate (BaSO 4 ) and other components, although it also contains barium sulfate (BaSO 4 ), but it is first extruded and processed into barium sulfate (BaSO 4 ) half-hose material, when installing, this half-hose material is broken and wrapped on the outside of the ordinary drainage pipe, so the practicability is poor, the appearance is not beautiful, the installation is not convenient, and it is difficult to realize industrialization

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