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What is the function of the barrel? What are the characteristics of the structure?

What is the function of the barrel in the extrusion system? The barrel includes a screw, which rotates in the barrel. When the screw rotates and the thread is pushed, the heat is transmitted to the material by heating outside the barrel. In addition, the volume of the thread is gradually reduced,......

On the deceleration principle of twin screw extruder

In most extruders, the change of screw speed is realized by adjusting the motor speed. The driving motor usually rotates at full speed of about 1750 rpm, which is too fast for an extruder screw. If it rotates at such a fast speed, too much friction heat will be generated, and the uniform and well st......

Principle of twin screw plastic extruder

Firstly, the twin-screw extruder has the extruder principle of single screw extruder: solid conveying, melt pressurization and pumping, mixed stripping and devolatilization, but it is not simply so. The research of twin-screw extrusion theory began late, coupled with its many types, complex screw ge......

Chinaplas 2022 ‘postponed’

This year’s Chinaplas show has been postponed, says the organiser, Adsale. In a message on the show website, the company says that “further tightening of pandemic control measures in Shanghai” had led to the decision.

What methods are used to cut plastic pipes? How do they work?

Extruded plastic pipe has a fixed length specified in the standard. The plastic pipe cutting machine is mainly used to cut the plastic pipe according to the length requirements of the production line.

Introduction to maintenance of extrusion die

Here we’d like to inctroduce how to maintenance of extrusion die as follows: 1.Improper operation or handling during the whole maintenance and disassembly process is one of the main reasons for the damage of grinding tools. Therefore, technicians should disassemble and dismantle the grinding tool......

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