What is Plastic Molding?
In short, plastic molding is the manufacturing process of various plastic parts. Through different plastic molding techniques, plastics can be made into plastic products with various shapes, sizes, and functions, such as: common plastic chairs, plastic cups, plastic trash cans and other daily necessities in life, so that they can be more flexibly and widely used in production and life. Each plastic molding technology has its advantages and is suitable for the manufacture of specific projects. In order to facilitate your quick understanding, we have listed the following main types of plastic molding processes for your reference:
The molten plastic is injected into a steel mold. After cooling, the mold is opened to obtain the corresponding plastic product. Injection molding is the most common method for mass production of plastic products (such as tables and chairs, kitchen utensils, toys, containers, many auto parts, bottle caps, etc.).
2. Plastic Blow Molding
Plastic blow molding is similar to plastic injection molding, but the difference is that after the liquid plastic is fed into the mold, it is pressurized by air to ensure that it contacts the inner surface of the mold, and finally cooled to form a hollow product. The blow-molded products of this process include bottles, barrels, cans, boxes, and many containers for packaging food, beverages, cosmetics, and medicines.
3. Plastic extrusion molding
Plastic extrusion molding process includes the following three common processes: ① Profile extrusion molding ② Tube extrusion molding ③ Film extrusion molding
- Profile extrusion molding refers to the extrusion on solid and hollow molded products, but does not include sheet or film products. From automobile windshield wipers to window frames, this process is used to mold products; • Tube extrusion molding is easy to understand, that is, through the entire equipment, the final result is a pipe, such as a PVC pipe. • Film extrusion molding can achieve a fairly thick plastic sheet or film.
4 Rotational molding
This is a high-temperature, low-pressure plastic molding process. For a better understanding, you can simply understand this process as a process in which the plastic inside the container is rotated by the injection molding container to finally obtain a plastic finished product.In this type of plastic molding, the cycle time usually takes about 40-45 minutes. From various amusement facilities in the park to floating bridges on the sea, plastic products molded by this process are used.
5. Plastic Compression Molding
Plastic compression molding is to put a small ball of solid plastic or prefabricated sheet into a heated mold and then press it into the final product. In this plastic molding process, a vertical press is generally used.The compression molded products formed by this process are widely used in production and life, such as: electrical appliances, mechanical equipment, transportation items, tableware, sporting goods, etc.
The 5 plastic molding processes introduced above hope to be helpful to you. If you want to learn more about the relevant knowledge of plastic molding process, you can leave a message to tell us.
