The reason why Bi-color mould tool price china is under injection during injection moulding
Release time:
2022-04-19 11:31
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The main reason for the undershot is that the flow resistance of the molten plastic is too large, so that the melt cannot continue to flow. Factors affecting the flow of molten plastic include: the wall thickness of the plastic part, the temperature of the plastic injection mold, the pressure during injection, the temperature of the molten plastic and the composition of the plastic material. All these factors may lead to the occurrence of underpayment.
Bi-color mould tool price china product, if there is a relatively thin structure at a position close to the gate, or at a position perpendicular to the flow direction, usually the position of the reinforcing rib, etc., then in the injection molding process During the molding process, the molten plastic will encounter a relatively large forward resistance when it passes through this position. However, due to the smooth flow of the main channel, no flow pressure is formed. Only when the melt is filled in the direction of the main channel or enters the pressure holding time Only enough pressure is formed to fill the stagnant part. At this time, because the part is very thin, and the plastic melt does not flow without heat supplement, it has cooled and solidified, resulting in under injection.
The above is about the reasons why Bi-color mould tool price china has insufficient injection during injection molding.
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