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Market application and structural characteristics of parallel twin screw extruders
Aug 09 , 2022
Parallel twin screw extruder are widely used in rubber, plastic and engineering resin filling, blending, modification, reinforcement, chlorinated polypropylene and superabsorbent resin devolatilization treatment; degradable masterbatch, polyamide polycondensation, polyurethane The extrusion of fat addition polymerization; the granulation of carbon powder and magnetic powder, the preparation of ins...
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Working principle of plastic extruder
Aug 16 , 2022
The plastic extruder generally melts the plastic powder at a high temperature in the heating section, and the melted plastic forms the required shape when it passes through the mold, and then completes the production of a product through subsequent mold accessories. Extrusion molding has high requirements on various control of equipment, including speed control, temperature control, etc. Engineers...
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Extruder screw material requirements
Aug 29 , 2022
In various plastic production lines, the extruder is the core machine, and the screw is the key component of the plastic extruder, so the material of the screw must have the characteristics of high temperature resistance, wear resistance, corrosion resistance, high strength, etc. It should also have the characteristics of good cutting performance, small residual stress after heat treatment, and sm...
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Analysis of plasticizing mechanism in each area of twin screw extruder for PVC products
Jan 06 , 2023
According to the plasticizing process of PVC material in the twin screw extruder, the screw is divided into three areas: solid conveying zone, melting zone, and melt conveying (extrusion) zone. 1. Plasticizing mechanism in solid conveying area In the machine barrel, the flow, preheating and compaction area of solid polymer (PVC) and its additives is defined as the solid conveying area. First of al...
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Problems and Treatment in the Production Process of PE Pipes
Mar 30 , 2023
With the continuous advancement of technology, PE pipe machine are widely used in all aspects of production and life due to their unique advantages, such as building water supply, construction drainage, buried gas transmission and distribution, gas pipelines, electrical and telecommunications protective casing, industrial pipes, agricultural pipes, etc. So, what problems may be encountered in the ...
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Common Problems and Solutions in the Production Process of PVC Boards
Apr 06 , 2023
Common Problems and Solutions in the Production Process of PVC Boards Production Line 1. The surface of the board is yellow Causes: Insufficient dose of stabilizers Insufficient external slip and large friction cause material decomposition The set temperature is too high Solutions: Increase the dose of stabilizer Increase the dose of slippery agent Lower the temperature 2. The board su...
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Properties of PVC impact modifier and its application
Apr 11 , 2023
PVC resin is a hard and brittle material with poor impact strength, generally only 3-5 kJ/m. The main reason for the need to improve the impact strength of unplasticized PVC is its sensitivity to notching. Besides, it is necessary to improve its low temperature impact resistance. By co-blending impact modifiers in PVC polymers, the toughness of PVC materials can be increased．These impact modifiers...
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What is PP PPR PE PVC pipe extruder machine？
May 06 , 2023
PP PPR PE PVC pipe extruder are available as single screw extruders and twin-screw extruders. The appropriate extruder will generally be selected according to the specific material. The material transport of single screw extruders is mainly by friction, which leads to a limited dosing performance, with powders, pastes, glass fibers and inorganic fillers being more difficult to incorporate. Further...
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What is Plastic extrusion?
May 29 , 2023
Plastic extrusion is one of the most widely used manufacturing processes for plastic moulding as well as one of the most widespread manufacturing processes for thermoplastics. It is a method of forming a continuous profile with a constant cross-section by forcing a thermally melted polymer material through a head die under pressure by means of the extrusion of a screw or plunger. The extrusion pro...
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