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High thickness and large-diameter pipes: how to avoid sag in pipe extrusion
The increased usage of large-diameter pipes, from 630mm to 1,200mm, across various applications has encouraged the development of PE100 materials suitable for large-diameter pipes to prevent problems during extrusion, like sagging. Maintaining dimensions within specifications is problematic for the......
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Pipes Extrusion: Basic Principles
A pipe extrusion line consists of different parts. An extruder converts raw plastic material into a continuous tubular melt by extrusion through an annular die. The molten pipe then proceeds through a sizing or calibration bench (which adjust its dimensions) to a cooling tank. After being cooled, th......
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PVC raw material selection and formula
PVC plastic is a multi-component plastic. Different additives can be added according to different uses. Due to different components, PVC products show different physical and mechanical properties, which can be applied in different occasions. PVC plastic pipe accounts for a large proportion in plasti......
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Principle and application scope of single screw extruder
In most extruders, the screw speed is changed by adjusting the motor speed. The drive motor usually rotates at a full speed of about 1750rpm, which is too fast for an extrusion screw. If it rotates at such a fast speed, too much friction heat will be generated, and the uniform and well stirred melt ......
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