Rubber extruder is a basic equipment in the rubber industry and one of the key pieces of equipment affecting product quality. It plays a very important role in the production process of tires and rubber products.

Plunger rubber extruder

The plunger rubber extruder originated in the 18th century, and since then, in the first 50 years of the 19th century, the extruder was basically only used in the production of lead pipes, the processing of macaroni and other foods, the brick making, and ceramic industries.

Screw-type rubber extruder

The rubber extruder that appeared in 1870 was the hot feed extruder. The rubber material it feeds is required to undergo thermal refining, and the feeding is uniform, stable and constant, and the material temperature is maintained at 50-70 °C. The screw is short, the thread groove is deep, and the homogenization effect is not ideal. from the 1970s. There was a phenomenon that the aspect ratio became smaller. Because the hot-feed extruder can continuously extrude, has simple operation, high production efficiency, and stable shape of the extruded product, the hot-feed extruder is still used in the production process of many products.

Ordinary rubber extruder

The cold feed extruder appeared in the 1940s, began to be promoted and popularized in the 1960s, and became the mainstream of development in the 1980s. By the early 1990s, the products produced by cold-feed extruders in developed countries such as Europe and the United States accounted for 95% of the total production. There are separate screw extruders, baffle screw extruders, and cavity screw extruders. , transfer mixing extruder, pin screw extruder and multi-channel transfer mixing screw (MC T) extruder, etc.