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What is the process flow of a three‑component rubber strip production line?

Time：

2020-04-02

In rubber industry production, co‑extrusion machines are primarily used for extruding tire compound treads, automotive sealing strips, colored tread compounds, tire treads, composite hose and elastomer–plastic co‑extrusions, as well as multi‑layer co‑extrusion of rubber sheets. Co‑extrusion technology is a priority process in the rubber industry, enabling the production of components that both conserve materials and meet diverse performance requirements by employing different formulations and grades of rubber compounds tailored to specific product needs. Applications: Triple‑layer rubber sealing strips are typically manufactured by combining expanded and solid EPDM rubber; the internal metal reinforcement may consist of steel wire or steel sheet.

In rubber manufacturing, co‑extrusion presses are primarily used for extruding tire compound treads, producing automotive sealing strips, colored tread compounds, tire tread compounds, as well as for co‑extruding hoses and elastomer–plastic composites, and for multi‑layer co‑extrusion of rubber sheets. Co‑extrusion technology is a priority process in the rubber industry, enabling the production of components that both minimize material consumption and meet diverse performance requirements by employing formulations with tailored properties and leveraging specialized co‑extrusion equipment.

Purpose:

Triple‑layer rubber sealing strips are primarily composed of a composite structure combining EPDM rubber foam with solid EPDM. The internal metal fasteners are made of steel wire or steel sheet. They are mainly used on car doors, door panels, door frames, side windows, front and rear windshields, engine hoods, and trunk lids, providing functions such as water and dust resistance, sound insulation, thermal insulation, vibration damping, and aesthetic decoration.

Equipment Features:

Uniform stone-carbonization, rapid stone-carbonization, and high efficiency; improved product quality, reduced production costs, optimized working conditions, and energy savings.

The rubber three‑component extrusion production line primarily manufactures: steel‑core rubber sealing strips, steel‑belt rubber profiled strips, steel‑belt reinforced rubber strips, automotive steel‑belt composite sealing strips, and foam‑plus‑solid‑plus‑steel‑belt rubber sealing strips.

The production of three‑layer composite sealing strips requires a wide variety of equipment and a substantial number of machines, making it a relatively complex manufacturing process. Typically, two extruders are needed for the exhaust‑type rubber extrusion process. Since producing three‑layer composite sealing strips places high demands on equipment stability, the overall performance and reliability of the rubber‑processing machinery largely determine the quality and effectiveness of the final sealing strip.

Hebei Shuangda Rubber and Plastics Machinery Co., Ltd. is a modern enterprise integrating research and development, manufacturing, and sales of complete sets of extrusion equipment for rubber, silicone, and plastics. The company’s main products include rubber extruders, rubber hose extrusion lines, three‑layer composite sealing strip extrusion lines, silicone sealing strip production lines, plastic sealing strip production lines, plastic profile production lines, plastic pipe production lines, elastomer extruders, and other extrusion equipment, as well as production machinery for engineering seals, automotive seals, wire and cable applications, air‑conditioning hoses, braided hoses, automotive hoses, waterstop strips, and related products.