The electric vehicle plastics market will grow rapidly from 2021, especially in the Asian market, which will increase by about 20% every year until 2025; the growth rate in Europe is comparable to that in the Americas, especially under the influence of the conflict between Russia and Ukraine, the entire There are more uncertainties in the market trend, but the overall electric vehicle plastics market is continuing to grow. It affects technology, environment, and lifestyle changes over the next 5-10 years.

Craftsmanship of plastic products

The surface quality of plastic parts is related to surface roughness and appearance quality. The way to provide the surface quality of plastic parts: avoid cold scars, moiré, and other defects as much as possible from the process; reduce the roughness of the surface of the mold cavity. Generally, the surface roughness of the mold is 1~2 grades lower than the requirements of the product.

Geometry of plastic parts 1. Wall thickness: (a) It should meet the strength requirements of plastic parts during assembly, transportation, and use. (b) Fully consider the fluidity of the plastic during the molding process to ensure that the thin wall and edge parts can also be filled. (c) The plastic part can withstand enough demolding force so as not to damage the plastic part when the plastic part is de-molded.

2. Demolding slope: (a) When the precision of plastic parts is high, there is a higher and larger size, and a smaller demolding slope should be used; (b) The plastic parts have complex shapes and are not easy to de-mold. If the shrinkage rate of plastic parts is large, a larger slope value should be selected; (c) When the wall of the plastic part is thick, the molding shrinkage will increase, and the demolding slope should adopt a larger value; (d) Requirements After demolding, the plastic part is kept on one side of the core, or the reinforced plastic part should take a larger value, then the demolding slope of the inner surface of the plastic part can be selected to be smaller than that of the outer surface.