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What is the function of cold-feed rubber extrusion equipment?

Time：

2021-05-11

The Function of Cold-Feed Rubber Extrusion Equipment The primary function of a cold-feed rubber extruder is extrusion molding; in fact, most rubber extruders used for extrusion molding are cold-feed types. The term “cold feed” is defined relative to “hot feed,” referring to whether the extruder requires hot rubber to be fed into the feed port during operation, or whether it can handle both hot and cold rubber. Typically, the distinction between a cold-feed and a hot-feed rubber extruder lies in the presence of a forced‑feed roller at the feed port. In a hot-feed extruder, the screw rotation draws the rubber inward, whereas a cold-feed extruder forcibly pushes the material into the barrel, ensuring that the screw receives an adequate supply of rubber to sustain production. Because cold-feed extrusion equipment provides stable feeding, the pressure at the extruder die remains constant, resulting in consistent product quality without fluctuations such as shaking or uneven surface profiles during production. Hebei Shuangda Rubber & Plastics Machinery Co., Ltd. is a modern enterprise integrating research and development, manufacturing, and sales of complete sets of extrusion machinery for rubber, silicone, and plastics. Its 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 components, air-conditioning hoses, braided tubes, automotive hoses, waterstop strips, and related products.

The function of cold-feed rubber extrusion equipment

The primary function of a cold-feed rubber extruder is extrusion molding, and most rubber extruders used for extrusion molding are cold-feed types. “Cold feed” is defined in contrast to “hot feed,” referring to whether the extruder requires hot rubber to be fed into the feed port during operation, or whether both hot and cold rubber can be fed.

The typical way to distinguish between a cold-feed rubber extruder and a hot-feed rubber extruder is to check whether there is a forced‑feed roller at the feed port. A hot-feed extruder uses the rotation of the screw to draw the rubber inward, whereas a cold-feed extruder forcibly pushes the rubber into the barrel, ensuring that the screw receives an adequate supply of material to sustain production.

Cold-feed rubber extrusion equipment ensures stable material feeding, which in turn maintains constant pressure at the extruder die. As a result, the extruded product exhibits consistent quality, without jitter or fluctuations in profile.

Hebei Shuangda Rubber & Plastic 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 extrusion lines, plastic pipe extrusion 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.