According to different materials, molds can be divided into metal molds and non-metal molds. Plastic mold is a kind of nonmetallic mold. With the rapid development of polymer plastics, plastic mold is closely related to people's lives. So what should I pay attention to when buying plastic molds? Many manufacturers in the market use crushed recycled materials as plastic molds, which have short service life and are easy to age and deform. The surface is uneven, and the cement part is not easy to demould, so the mold has many shortcomings. So pay attention to the following points when buying plastic molds: 1. Don't compare the weights. You can compare the wall thickness of products by cutting plastic molds. The recycled crushed materials still contain cement slurry powder after crushing. Under the same steel mold injection molding, the products made are only heavy, not light. 2. Don't compare prices too much. The two molds made of US$ from 40 yuan are not as durable as those made of US$ 1 50 yuan, and the manufactured cement parts have stable dimensions, no external expansion and no risk of unqualified products. 3. There are many black spots on the surface of the plastic mold made of crushed recycled materials, which are turbid and not bright, and the deformation is great after application. 4. The appearance of mold products should not have many flash burrs and tool pin marks. Steel mold injection molding affects the appearance of products. If the steel mold doesn't open well, the quality of plastic mold is not much better. 5. It is best for customers to buy special plastic molds for cement prefabricated parts in areas with intensive production of plastic molds, most of which are concentrated in Jiaxing, Zhejiang and Baoding, Hebei, and there are also many agents in other areas. Plastic molds are widely used in people's lives, and the molds made by many illegal manufacturers are not standardized, which has caused some troubles to users, so we should pay more attention and measure more when buying.

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