How Is a Rubber Extrusion Line Structured

A rubber extrusion production line is an integrated system designed to process rubber compounds into continuous profiles with a defined cross-section. It is widely used in industries such as automotive sealing, construction materials, and industrial components. The line consists of several functional units that work together to ensure stable output, dimensional consistency, and controlled material properties.

The process typically begins with raw material preparation equipment. This stage includes internal mixers, open mixing mills, or compound feeding systems that ensure rubber materials are properly blended with additives such as fillers, plasticizers, and curing agents. Uniform mixing is essential, as it directly affects extrusion stability and product quality.

Next is the rubber extruder, which is the core machine of the production line. The extruder generally includes a screw, barrel, drive motor, and temperature control system. Its function is to convey, compress, and plasticize the rubber compound before pushing it through a die. Different screw designs may be selected depending on material characteristics and production requirements.

The extrusion die and tooling define the final shape of the rubber product. Dies are custom-designed according to profile geometry and dimensional tolerances. Proper die design helps maintain smooth flow, reduce deformation, and achieve consistent cross-sections.

After extrusion, the product passes through a cooling or curing system. This may include water cooling tanks, air cooling conveyors, microwave units, or hot-air vulcanization tunnels. The choice depends on whether the rubber requires curing during extrusion or post-extrusion treatment.

The line also includes haul-off and cutting equipment. Haul-off units control the extrusion speed and maintain dimensional accuracy, while cutting systems divide the continuous profile into specified lengths.

Control and inspection systems monitor temperature, speed, and product dimensions. These systems help ensure process stability, reduce material waste, and support consistent production. Together, these components form a complete rubber extrusion production line suited for continuous manufacturing needs.

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Environmental protection, high efficiency, energy conservation and safety of LCM salt-bath vulcanization system for rubber profiles.
The characteristics of LCM Technology:
Compared with other rubber vulcanization technologies, such as microwave vulcanization (UHF), the characteristics of LCM system are outstanding. It is mainly manifested in its stable processing quality, high vulcanization speed and wide practicability.