Suzhou plastic granulator Kunshan plastic granulator granulator Jiudelong is great

Plastic granulator Kunshan plastic granulator
Each working section of the screw:
The processing of the screw generally includes: feeding section (preheating and solid conveying), melting and mixing section, side feeding section (partial The case is the first exhaust section), dispersion/homogenization section, devolatilization section, discharge and pressurization section.
: Feeding section:
The twin-screw feeding is a hungry feeding design, and the output has little relationship with the screw speed. Therefore, we can strictly control the material residence time, filling degree and energy consumption of the twin-screw. Of course, the most ideal operating condition is when the feeding reaches the maximum, and the production capacity of the extruder is fully utilized at this time. In the screw combination, the main function of the feeding section is to eat in materials and transport solids, while at the same time the feeding section compacts the solid bed. The function of the feeding section: the conveying function is realized by friction and drag conveying.
: Melting section:
The main job of this section is to fully melt the melt/resin mixture delivered from the upstream feeding section and perform preliminary mixing. Completing these two functions mainly relies on the meshing block. Due to the need to complete preliminary melting (which is the main purpose of this paragraph), the meshing blocks here are mostly meshing blocks with large angles and thickness, such as: 10-degree-angle meshing blocks and 10-degree-angle meshing blocks. The resin is completely melted by the heat energy converted from the heating plate and mechanical energy.
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: Side feeding:
The main work of this section is to remove small molecule volatiles that may be contained in the melt and add the remaining additives. Usually, large-lead thread elements are used in this section to reduce the filling degree of the melt channel here and directly contact the external working environment of the twin-screw, which is conducive to the elimination of volatile components and also provides space for the remaining components to be added. Provide space for accommodation. Ingredients usually added here include: liquid flame retardants, powdered fillers, and various fibers. The adding methods include: melt pump pumping method, side feeding screw feeding method and long fiber winding adding method.
The side feeding screw feeds powder or chopped fibers: Since most of the powdered fillers or chopped fibers are fed in this case, especially the air entrained in the powdered fillers will be affected by the downstream pressure. The exhaust in the opposite conveying direction of the screw causes melt blockage and overflow here. Therefore, when adding such additives, it is necessary to improve the conveying capacity of the conveying thread while trying to avoid the premature appearance of the compression section. : Dispersion/homogenization section:

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