The plastic consumption market of automobiles tends to be lightweight and environmentally friendly, which means that the use of recyclable plastics is huge, especially PP and PU materials. The market consumption of PP materials will reach 603.4–623.6 million USD around 2030; the proportion of PU recycled will reach 491.47–508.57 million tons. Therefore, in the next 5-10 years, the demand for plastics for automobile manufacturing will be large, and there will be matching use, whether high or low.

The molding process of plastic parts

The molding method for plastic parts is to first put powder, granular, crumb, or fibrous plastic into the mold feeding cavity at the molding temperature, then close the mold and pressurize it to shape and solidify to obtain the required plastic. pieces.

The characteristics of compression molding are: (a) The plastic is directly added to the cavity, and the feeding cavity is an extension of the cavity; (b) The mold is completely closed when the plastic part is finally formed; (c) The pressure is directly transmitted through the convex mold. (d) The plastic is directly added to the cavity, the operation is simple, and the mold structure is simple;

During pressing, since the plastic is directly press-molded in the cavity, it is beneficial to mold the plastic with fiber as the filler with poor fluidity. The plastic part has less shrinkage and deformation, and the performance is relatively uniform in all directions.