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The differences between rubber extrusion equipment and plastic extrusion equipment

Time：

2021-06-01

Both rubber extruders and plastic extruders are types of extrusion machines, and as we know, most extruders are used to produce extruded products. These two types of equipment are designed according to the characteristics of the materials being processed; therefore, their forming principles differ. Typically, rubber products extruded by a rubber extruder must undergo vulcanization in a curing unit before they can be fully set, whereas plastic extruders achieve product shaping simply by cooling the material. Furthermore, the most significant difference between plastic and rubber extruders lies in their operational requirements: rubber extrusion does not demand high temperatures, making it suitable for low‑temperature processing. Once the rubber is fed into the barrel via the feeding system and heated, its flow properties improve, facilitating easier processing by the extruder screw. Inside the barrel, the screw compresses and mixes the rubber, generating forward extrusion pressure that builds up at the die, ultimately producing the desired final product. For this reason, we employ water‑based temperature control to precisely regulate the barrel and screw temperatures, ensuring accurate thermal management. In contrast, plastic extruders require temperatures sufficient to plasticize the resin—generally above 100°C. Consequently, during plastic production, heating elements are typically used to raise the machine’s temperature, while cooling is achieved through air‑cooling systems to bring the product down to the desired temperature. Thus, different types of plastic extruders rely on distinct extrusion‑forming principles in their manufacturing processes.

Rubber extruders and plastic extruders are both types of extrusion machines, and most extruders are used to shape products through extrusion. These two kinds of equipment are designed according to the characteristics of the materials being processed, so their forming principles differ. Typically, rubber products extruded by a rubber extruder must undergo vulcanization in a curing unit before they can be fully set; in contrast, plastic extruders achieve product shaping simply by cooling the extruded material. Another major difference between plastic and rubber extruders lies in their operational requirements: rubber extrusion does not demand high temperatures, making it suitable for low‑temperature processing. Once the rubber is fed into the barrel via the feeding system and heated, its flow properties improve, facilitating easier processing by the extruder screw. Inside the barrel, the screw compresses and mixes the rubber, generating forward extrusion pressure that builds up at the die, ultimately producing the desired final product. For this reason, we often employ water‑based temperature control to precisely regulate the barrel and screw temperatures. By contrast, plastic extruders require temperatures sufficient to plasticize the resin—typically above 100°C. Consequently, during plastic production, heating elements are commonly used to raise the machine’s temperature, while cooling is achieved through air‑cooling systems to bring the product down to the desired temperature. Thus, different types of plastic extruders rely on distinct extrusion‑forming principles in their manufacturing processes.