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Andrew High Precision Machinery Co.,Ltd


Add: Xin an industrial zone, hengshanqiao town, wujin district, Changzhou/Guangzhou city, China


Sales Director: Andrey Chao


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The Basic Principle Of Plastic Extruder Screw Feed, The Principle Of The Material
Oct 10, 2017

The basic principle of plastic extruderThe principle of screw feed, the principle of the extruder machine is the use of heating, pressing and cutting, etc., the solid plastic into a uniform melt, and melt sent To the next craft. The production of the melt involves the addition of additives such as mixed masterbatches, blending resins and re-pulverization. The finished melt must be uniform in concentration and temperature. The pressurization must be large enough to extrude the viscous polymer. The extruder completes all of the above processes through a barrel with a screw and helix. The plastic pellets enter the barrel through the hopper at one end of the barrel and then through the screw to the other end of the barrel. In order to have sufficient pressure, the depth of the thread on the screw decreases as the distance to the hopper increases. External heating and internal heat generated by friction between plastics and screws, softening and melting the plastic. Is a simplified extruder. Different polymers and different applications, the design requirements for the extruder are often different. Many options relate to the discharge port, multiple feed ports, special mixing devices along the screw, cooling and heating of the melt, or no external heat source (adiabatic extruder), relative clearance between the screw and the barrel , And the number of screws. For example, a twin-screw extruder can make the melt more fully mixed than a single-screw extruder. The series extrusion is a melt extruded from the first extruder and supplied as a raw material to the second extruder, usually used to produce extruded polyethylene foam

Our extruder factory has been eatablished for near 18 years since 2000. We are focused on developping and designing the most precision, highest stable and top professional medical and industrial extruder machine line system these years. Multi-type extruders adopt world famous AC frequency converter with free maintenance function, optional Japan Mitsubishi servo motor, Japan OMRON temperature controller, German Siemens PLC controlling system with Siemens human-computer interface, laser type tube OD detecting gauge with advanced closed loop function, etc. Compact structure, easy operation, extensive capacity and applicable to various plastic material and different application. The just right price of our precision extrusion equipment is formed from continuous designing and standard modular manufacturing. Our strict production standards and precise parameters controlling system guarantee the highest precision, most stable and top professional medical and industrial extruder machine equipment in China.