Laying method of polyurethane plastic

CN120906012APending Publication Date: 2025-11-07JIANGYIN WENMING SPORTS PLASTIC CO LTD
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Patent Information

Application Number
CN202511137546.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-14
Publication Date
2025-11-07

AI Technical Summary

Technical Problem

Traditional polyurethane running tracks are prone to micropores and leaks at joints during construction, leading to water penetration, corrosion of the base layer, reduced elasticity, and insufficient waterproofing performance.

Method used

The process involves mixing polyurethane foam particles, polyurethane sponge, and microcapsule polyurethane prepolymer with reactive hot melt adhesive, then spraying the mixture to form a foam layer. During heating, the microcapsules rupture to release the prepolymer, which then undergoes chemical cross-linking to fill the voids and form a dense structure.

Benefits of technology

It improves the density and waterproofing of polyurethane running tracks, reduces the risk of moisture corrosion to the substrate, avoids material elasticity degradation, and shortens the construction cycle.

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Abstract

The invention provides a polyurethane plastic laying method which comprises the following steps: cleaning a base material and coating the base material with a polyurethane self-leveling first leveling layer of 1-3mm; the preparation method comprises the following steps: uniformly mixing foamed polyurethane particles, polyurethane sponge, a microcapsule polyurethane prepolymer and a reaction type hot melt adhesive at 50-65 DEG C and humidity less than or equal to 40% RH on site, then spraying the mixture to a base material under the pressure of 8-15 MPa, heating to 95-120 DEG C to break microcapsules to release the prepolymer, and synchronously pressurizing to 2-5 MPa to form a foaming layer; and a second leveling layer, a buffer layer and a wear-resistant layer are sequentially applied. According to the laying method disclosed by the invention, the gaps are filled through crosslinking after the microcapsule prepolymers are broken, the double-layer polyurethane self-leveling leveling layer is matched, a moisture permeation path is blocked, seamless connection is realized, the construction period is shortened, and the leakage risk of the joints is reduced.
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