In today's competitive global marketplace, plastics processors can gain an advantage by incorporating some relatively simple practices into their operations. In injection molding, extrusion, or blow molding, the plasticizing unit is the key to production efficiency and final product quality.
The main components of the plasticizing unit, the feed screw, and barrel, should be designed...
Plastic extrusion, also known as plasticizing extrusion, is a continuous high-volume manufacturing process in which thermoplastic materials (in powder, pellet, or pellet form) are uniformly melted and then extruded from a forming die by pressure.
In screw extrusion, the pressure comes from the rotation of the screw against the barrel wall. As the plastic melt passes through the die, it acquires...
In a conical extruder, the extruder is specified by the diameter of the screw at the end of the metering section. Meanwhile, the parallel extruder dimension is the diameter of the thread. The 50 mm conical extruder is said to match the output of the 65 mm parallel screw extruder.
For such an extruder, the screw diameter of the feed section was 100 mm. In the feeding section, plasticization is...
When extruding rubber compounds with a rubber screw barrel, it is mainly the heating of the barrel and the screw, which, in addition to the number of revolutions, also significantly affects the product quality and output. With sufficient thermal and material uniformity, the throughput rate at low material temperatures can be improved by optimizing heating conditions.
Regarding the...
When the new conical screw barrel is used for half a year, due to wear and tear, the clearance between the screw and the barrel must be checked every three months, and appropriate adjustments must be made.
The clearance between the screw and the barrel is directly related to the quality of the product. The gap between the screw and the barrel should be neither too large nor too small.
If the...
When the new machine is used for half a year, due to wear, the gap between the screw of the conical screw barrel and the barrel must be checked every three months, and appropriate adjustments must be made. This is done to avoid excessive clearance leading to a decrease in output, and it may even be the result of screw fracture due to excessive screw swing angle.
The gap between the screw and...
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