Plastic Extruder Machines

Our SJSZ series plastic extruder machines with appropriate die-mould and auxiliary machine can directly convert thermoplastic especial PVC power into pipe, plate sheet, film and profile, and also provide funcion of modifying and pelleting. The extruder machines are drived by A.C. motor with thruster to sttpless regulate. It is also equipped with over load protecion and error alarming system. The screw's core and the outside of barrel is cooled by circulation of oil, it includes vacuum verting and forced feeding.

A twin-screw extruder machine is a widely used processing equipment in industries such as plastics, rubber, and food. It is mainly used for mixing, melting, and extruding materials. It consists of two intermeshing or parallel screws that provide higher mixing efficiency and processing capacity. Compared to single-screw extruders, twin-screw extruders offer greater shearing force and mixing performance, making them ideal for processing materials with complex formulations.

1. Screws: The design of the twin screws is the core part of this equipment. There are two types: co-rotating (same direction) and counter-rotating (opposite direction). The geometry and rotation of the screws directly affect the mixing and processing efficiency of the material.

2. Hopper: This device is used to feed raw materials into the extruder. Depending on the needs, it can feed solid pellets, powders, or liquids.

3. Heating and cooling systems: The heating system melts the materials, while the cooling system ensures that the extruded materials cool and solidify quickly.

4. Barrel: The twin screws are housed inside the barrel, where the materials are heated, melted, mixed, and conveyed. The barrel typically has multiple heating zones, each with independent temperature control to meet various processing requirements.

5. Die: After the material is mixed by the screws, it is extruded through the die, which shapes the final product. The die's shape determines the form of the final product, such as pipes, sheets, or pellets.

Twin screw extruder machines

Raw materials are fed into the barrel from the hopper, and the rotating twin screws generate shear forces, continuously mixing and melting the material. The twin-screw extruder allows for uniform mixing and precise temperature control by adjusting the screw design and rotation speed. After being compressed and sheared by the screws, the material is extruded through the die to form the desired shape or product.

1. High mixing efficiency: Due to the interaction between the two screws, the material is fully mixed and dispersed, making it suitable for processing multi-component formulations.

2. High processing capacity: Compared to single-screw extruders, twin-screw extruders offer greater shear and conveying capabilities, enabling the processing of high-viscosity materials.

3. High flexibility: The screw design can be adjusted based on the material characteristics, allowing the machine to meet different processing needs, such as for high-fill materials or fiber-reinforced materials.

Hot Tags: plastic extruder machines, China plastic extruder machines manufacturers, suppliers, Hopper Dryer Machine, Steam Boiler Electric, Drip Irrigation Tape Production Line, gas dryer commercial hotel, laundry feeder, Energy Saving Tumble Dryer