What is compression molding?

Compression molding is an operation in which powder, granular or fibrous plastics are first put into the mold cavity at the molding temperature, and then the mold is closed and pressurized to shape and solidify.

The molding pressure of the compression molding process is higher than that of other process methods, and it belongs to high pressure molding. Therefore, it requires not only a hydraulic press machine that can control the pressure, but also a metal compress mold with high strength, high precision and high temperature resistance.

The application of compression molding

Compression Molding is mainly used in making structural parts, connecting parts, protective parts and electrical insulating parts. Widely used in industry, agriculture, transportation, electrical, chemical, construction, machinery and other fields. Due to the reliable quality of molded products, they have also been used in weapons, aircraft, missiles, and satellites.

The advantages of compression molding

1. The loss of raw materials is small and will not cause too much loss (usually 2% to 5% of the product quality).

2. The internal stress of the product is very low, and the warpage deformation is also small, and the mechanical properties are relatively stable.

3. The wear of the mold cavity is very small, and the maintenance cost of the mold is low.

4. The cost of molding equipment is low, the mold structure is relatively simple, and the manufacturing cost is usually lower than that of injection molds or transfer molding molds.

5. Larger flat products can be molded, and the size of the products that can be molded by molding is only determined by the clamping force of the existing molding machine and the size of the template.

6. The shrinkage rate of the product is small and the repeatability is good.

7. A mold with a large number of mold cavities can be placed on a given template, and the productivity is high.

8. It can adapt to automatic feeding and automatic removal of products.

9. High production efficiency, easy to achieve specialized and automated production.

10. The product has high dimensional accuracy and good repeatability.

11. The surface is smooth and without secondary modification.

12. Products with complex structures can be formed at one time.

13. Mass production, the price is relatively low.

After learning about the advantages of compression molding, maybe you are interested in compression molding machines and molds, and then you can contact us.

We are a professional manufacturer of compression molding machines and molds, as well as melamine products edging machines, high-frequency preheating machines, and can provide you with professional advice.