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During the extrusion process, when the plastic melt ent […]
The semicircular head 1 and the tapered 2 are generally used for polyolefin materials such as polyolefin plastics; the tip 3 is mainly used for hard polyvinyl chloride plastics with poor thermal stability; in order to eliminate the stagnant flow of the screw head Sometimes the hoe 6 is used; the threaded tip 4 and the torpedo head 5 are currently used very little, the former being mainly used in the cable industry. The latter is advantageous for promoting plasticization and for smoothing the flow, but it also causes unnecessary increase in the temperature of the melt, which is due to the small gap (about 40%-50% of the depth H3 of the metering section). ), the shearing effect is strong, and a large amount of mechanical work is caused by thermal energy.
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China Conical Twin Screws ManufacturersTechnical Support: HWAQ