A multi-layer composite sound insulation cotton for drain pipes

The multi-layered composite structure of the drainage pipe sound insulation cotton solves the problems of insufficient low-frequency noise suppression and bonding stability in existing technologies, achieving efficient sound insulation, waterproofing and convenient construction. It is suitable for sound insulation treatment of drainage pipes in high-rise buildings.

CN122560520APending Publication Date: 2026-08-14廊坊沐丰地暖材料有限公司
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Patent Information

Application Number
CN202610702854.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-21
Publication Date
2026-08-14

AI Technical Summary

Technical Problem

Existing sound insulation materials for drainage pipes are insufficient in suppressing low-frequency vibration noise and in terms of bonding stability. Furthermore, their construction is complex or environmentally unfriendly, making it difficult to meet the sound insulation requirements of high-rise buildings.

Method used

The material consists of a release paper layer, a first butyl adhesive layer, an IXPE foam layer, a second butyl vibration damping adhesive layer, and a non-woven protective layer, which are stacked sequentially from the outside to the inside. They are integrated through a hot-pressing process to form a multi-layer structure that has the functions of low-temperature continuous bonding, sound absorption, damping sound insulation, and waterproofing.

Benefits of technology

It achieves efficient sound insulation and noise reduction under different temperature and humidity environments, is easy to construct, significantly suppresses low-frequency noise and vibration, extends service life, and is suitable for sound insulation treatment of drainage pipes in high-rise buildings.

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Abstract

This invention discloses a multi-layer composite sound insulation cotton for drain pipes. It comprises, from the outside in, a release paper layer, a first butyl rubber layer, an IXPE foam layer, a second butyl vibration damping layer, and a non-woven protective layer, stacked sequentially. The first butyl rubber layer is made of modified butyl rubber; the IXPE foam layer is made of cross-linked polyethylene foam with an independent closed-cell structure; and the second butyl vibration damping layer is made of high-damping butyl rubber. The sound insulation cotton of this invention achieves low-temperature continuous bonding and initial vibration damping and waterproofing through the first butyl rubber layer; it achieves sound absorption, sound insulation, and heat preservation through the IXPE foam layer; it forms a constrained damping structure with the second butyl vibration damping layer, the first butyl rubber layer, and the IXPE foam layer to suppress pipe vibration and block sound bridge transmission; and it forms a double waterproof structure with the non-woven protective layer and the first butyl rubber layer to prevent external water vapor penetration. It integrates multiple functions such as bonding, vibration damping, sound absorption, sound insulation, heat preservation, waterproofing, and protection.
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