Introduction of rubber extruder and extruder type

Introduction of rubber extruder

Rubber extruder is a basic equipment in the rubber industry and one of the key equipments affecting product quality. It plays a very important role in the production process of tires and rubber products. The development of foreign rubber extruders has experienced a Plug extruder, screw type hot feed extruder, common cold feed extruder, main and auxiliary screw thread cold feed extruder, cold feed exhaust extruder, pin cold feed extruder, Compound extruder and other stages. The rubber extruder is used for pressing, filtering and encapsulating rubber semi-products. Structural features: The screw and inner sleeve are made of nitrided steel, which has good wear resistance and corrosion resistance. sex.

Screw extrusion of rubber compounding by rubber extruder is one of the oldest fields of extrusion technology, which can be traced back to the 19th century. Rubber extruders are significantly different from thermoplastic extruders. First of all, rubber extrusion is carried out at lower temperatures (up to 130°C). Second, rubber extrusion often incorporates strands (and only in exceptional cases, pellets), which do not undergo phase transitions within the screw extruder system or A large degree of thickening. Unlike thermoplastics, thermoplastics are processed at a temperature of 180^-300 °C (or higher) in a screw extruder, and low-density solid particles are often added to the extruder. When the pellets move forward along the screw, the molten well is compacted.

Rubber extruders are usually classified as hot-feed and cold-feed machines. In hot-feed extruders, the rubber compound is heated by the mechanical action of the open mill, and these heated strips are cut and continuously extruded. Feeding from the machine. In the cold feed screw extruder, the room temperature rubber strip is added to the extruder. The rubber extruder is also often classified according to whether it is used for exhaust or not.

Types of Rubber Extruders

Rubber extruder is a basic equipment in the rubber industry and one of the key equipments affecting product quality. It plays a very important role in the production process of tires and rubber products. The development of foreign rubber extruders has undergone column Plug extruder, screw type hot feed extruder, common cold feed extruder, main and auxiliary screw thread cold feed extruder, cold feed exhaust extruder, pin cold feed extruder, Compound extruder and other stages.

Rubber extruder is divided into: plunger type, screw type, ordinary type, cold feeding type, pin type, compound type. Future development trend: multi-screw multi-channel multi-compound new drive control system precise technology