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Three‑layer rubber extrusion production line

The three‑layer rubber sealing strip is primarily composed of a composite structure combining EPDM rubber foam with solid EPDM rubber, and incorporates metal reinforcement elements such as steel wire or steel strips. It is 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 decorative enhancement. Equipment features: - High efficiency; improves product quality, reduces production costs, and optimizes the working environment. The rubber three‑layer extrusion production line specializes in manufacturing steel‑core rubber sealing strips, steel‑belt shaped rubber profiles, steel‑belt reinforced rubber strips, automotive steel‑belt composite sealing strips, and foam‑plus‑solid‑plus‑steel‑belt rubber sealing strips. Producing three‑layer sealing strips requires a wide variety of equipment and a relatively large number of machines, making it a rather complex manufacturing process. Typically, two vented rubber extruders are needed, and the stable performance of these machines is crucial for producing high‑quality three‑layer sealing strips; in general, the stability of the extrusion equipment directly determines the final quality of the rubber sealing strips. Hebei Shuangda Rubber & Plastics Machinery Co., Ltd. is a modern enterprise integrating R&D, manufacturing, and sales of complete sets of extrusion machinery for rubber, silicone, and plastics. The company’s main products include rubber extruders, rubber hose extrusion lines, three‑layer 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, electrical wires and cables, air-conditioning hoses, braided tubes, automotive hoses, waterstop strips, and related products.

2021

08-22

Butyl rubber double-wrist extruder

Today, cold-feed rubber extruders are widely used for extrusion molding, with many rubber products manufactured using this technology. Common types of rubber products include EPDM (ethylene propylene diene monomer) rubber, silicone rubber, and natural rubber. During extrusion, these materials are typically fed into the extruder via a forced‑feed roller system, which pushes the compound into the screw barrel; only then can it be shaped at the die head. However, certain rubbers—such as butyl rubber—are notably soft and highly adhesive. With conventional feeding methods, the material can easily break or tear during extrusion, preventing continuous feeding. To address this issue, we have developed a dual‑arm feeding extruder, which is particularly suited for processing butyl rubber. This machine employs a dual‑arm, interlocking feed mechanism to forcibly convey the soft butyl rubber into the screw barrel, making it an ideal solution for butyl rubber production. A typical example is automotive vibration dampers, which are produced using a dual‑arm‑fed butyl rubber extruder. Since different rubber compounds exhibit distinct properties, selecting the appropriate extruder based on the specific characteristics of your product is essential to achieving optimal results.

2021

08-15

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