Degradable plastic packaging box injection molding process

Abstract

The invention relates to a degradable plastic packaging box injection molding technology which comprises an injection molding unit and a material conveying unit, the material conveying unit is fixedly installed on the right end face of the injection molding unit, raw material particles are subjected to melting treatment through the material conveying unit and filtered, it is guaranteed that the liquid state entering the injection molding unit is liquid, the flow speed is uniform, and the plastic packaging box is not prone to falling off. The situation that the quality of a plastic part is low due to the fact that incompletely-molten raw material particles enter the injection molding unit to be formed is prevented, cooling treatment is conducted on the periphery of the formed plastic part through the injection molding unit according to the shape of the plastic part, it is guaranteed that the plastic part is evenly cooled and finally completely solidified, and the forming efficiency and quality of the plastic part are improved.

Description

technical field [0001] The invention relates to the technical field of injection molding of plastic packaging boxes, in particular to an injection molding process of degradable plastic packaging boxes. Background technique [0002] Degradable plastic packaging box refers to a plastic packaging box made of degradable materials through injection molding. After use, it can be naturally degraded in the external environment, reducing the generation of white garbage and protecting the environment. [0003] The traditional injection molding is to heat the raw material particles to melt them, and then inject the liquid raw materials into the mold under the action of the extrusion force. After cooling, the mold is opened, and the solidified plastic parts are pushed out of the mold. In the process of heating the raw material particles, it is difficult for the center of the raw material particles to melt quickly and completely, resulting in the liquid raw material entering the mold con...

AI Technical Summary

Problems solved by technology

[0003] Traditional injection molding is to heat the raw material particles to melt them, then inject the liquid raw materials into the mold under the action of extrusion force, and finally cool down, open the mold, and push the solidified plastic parts out of the mold. During the heating process of the raw material particles, it is difficult to melt the center part of the raw material particles quickly and completely, resulting in the liquid raw material entering the mold containing raw material particles, which affects the quality of the plastic part, and the flow rate of the liquid raw material flowing to the mold is not uniform, and the raw material cannot be uniformly entered In the cavity of the mold, it affects the quality of the plastic part

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