Multi-stage composite production process of EPDM rubber sealing element

By employing a multi-stage composite production process, combined with automated equipment and precise parameter control, the environmental pollution and quality instability issues in automotive sealing component production have been resolved, achieving environmentally friendly, efficient, and stable sealing component manufacturing.

CN121375181APending Publication Date: 2026-01-23JIANGSU CHENGDA POLYMER MATERIAL CO LTD
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Patent Information

Application Number
CN202511485908.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2025-09-23
Filing Date
2025-10-17
Publication Date
2026-01-23

AI Technical Summary

Technical Problem

Existing automotive sealing component manufacturing processes suffer from environmental pollution, low production efficiency, and unstable product quality. In particular, the batching process generates severe dust pollution, the mixing and open mixing processes produce significant noise pollution, the foaming process generates harmful gases, and resources are wasted.

Method used

The process employs a multi-stage composite production process, including extrusion, spinning, adhesive spraying, slitting and molding, and inspection before shipment. It utilizes automated equipment and precise parameter control to reduce dust, exhaust gas, and noise pollution, achieves precise material batching and molding, and combines the advantages of EPDM rubber and polyester fiber to form high-performance seals.

Benefits of technology

It reduces dust and exhaust emissions, lowers noise pollution, improves production efficiency and product quality stability, ensures the sealing performance, high temperature resistance and wear resistance of seals, and reduces resource waste.

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Abstract

The invention discloses a multi-stage composite production process of an EPDM (Ethylene-Propylene-Diene Monomer) rubber sealing element, and relates to the technical field of rubber sealing elements, and the multi-stage composite production process is technically characterized by comprising the following steps of: 1, extruding: putting EPDM rubber into a single-screw extruder, heating to 180-200 DEG C to be in a molten state, and conveying the EPDM rubber to a spinning machine through a metering pump; 2, spinning: forming filaments by the melt through a spinning machine consisting of a filter screen, a distribution plate and a spinning plate, drawing the filaments into a net forming area through hot air, and compounding the filaments with polyester fibers to form a semi-finished product; 3, glue spraying: coating water-soluble glue on the front and back surfaces of the semi-finished product, and compounding double-layer non-woven fabric or release paper or cotton paper; fourthly, slitting and die pressing are conducted, and after rewinding and slitting are conducted, a final product is formed through die pressing of a punching machine according to requirements; 5, inspecting and leaving factory, namely inspecting and leaving factory after packaging; the sealing element production device can achieve environment-friendly, efficient and stable sealing element production.
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