Multi-layer co-extrusion PPR water supply composite pipe

By designing a multi-layer coextruded structure on PPR pipes, including wear-resistant and impact-resistant composite layer, pressure-resistant toughening composite layer and inner pipe layer, the problem of weak compressive resistance in high-pressure environments is solved, the wear resistance and compressive resistance are improved, the service life is extended, and the antibacterial and hydrophobic properties are enhanced.

CN222687502UActive Publication Date: 2025-03-28ANHUI LONGSHENG IND CO LTD
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Patent Information

Application Number
CN202420871010.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-25
Publication Date
2025-03-28
Estimated Expiration
2034-04-25

AI Technical Summary

Technical Problem

The existing PPR pipes have weak compressive resistance under high pressure environments, are prone to rupture and leakage, and have poor wear and impact resistance of the outer layer, short service life and high maintenance costs.

Method used

The multi-layer coextruded PPR water feed composite pipe design is adopted, including wear-resistant and impact-resistant composite layer, pressure-resistant toughening composite layer and inner tube layer. The wear-resistant and impact-resistant composite layer consists of a polyethylene wear-resistant layer and a polyurethane wear-resistant layer. The pressure-resistant toughening composite layer consists of a PPR main layer and a composite pressure-resistant toughening layer. The inner tube layer is made of food-grade polypropylene material with silver ions added or a hydrophobic material imitating butterfly wings.

Benefits of technology

It improves the wear resistance and compressive resistance of the pipe, extends the service life, reduces maintenance costs, and avoids bacterial growth and water quality pollution through the antibacterial and hydrophobic properties of the inner pipe layer.

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Abstract

The utility model relates to the technical field of home decoration pipes, and discloses a multi-layer co-extrusion PPR water supply composite pipe which comprises a composite water supply pipe body, the composite water supply pipe body comprises a wear-resisting and impact-resisting composite layer, and a compression-resisting and toughening composite layer is fixedly installed on the inner wall of the wear-resisting and impact-resisting composite layer. The polyethylene wear-resistant layer and the polyurethane wear-resistant layer on the wear-resistant and impact-resistant composite layer have good impact resistance, so that the whole pipe cannot crack when facing the impact of water flow or external factors, the wear-resistant composite pipe also has good wear resistance, the wear-resistant property of the whole composite water supply pipe can be improved, and the service life of the composite water supply pipe is prolonged. According to the composite water supply pipe, water leakage caused by external abrasion of the composite wear-resistant layer is avoided, the composite compression-resistant toughening layer on the compression-resistant toughening composite layer has a good compression-resistant toughening effect, the composite water supply pipe can bear high water pressure and cannot be broken, and the service life of the composite water supply pipe is further prolonged.
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