Q&A

Commonly used plastic molding processing methods

The commonly used plastic molding processing methods include injection molding, extrusion molding, blow molding, compression molding, rotary molding and other methods, each of which has its specific application fields and characteristics.

To put it simply, plastic molding is a process in which plastic raw materials are heated and pressurized to form and solidify into the desired shape. According to the requirements of the finished product and the different types of plastics, the commonly used plastic molding processing methods include the following:

Injection Molding

Injection molding is a method of injecting molten plastic into a mold for cooling and curing molding, which is suitable for the production of hollow or non-hollow plastic parts. This is one of the most commonly used processing methods, which can achieve mass production with high precision and good dimensional stability.

Extrusion Molding

Extrusion molding is the process of extruding molten plastic through a die, which can be used to manufacture profile products such as pipes, plates, films, etc.5. The extrusion process equipment is simple and low-cost, which is the main method for the production of long strip plastic products.

Blow Molding

Blow molding is a process in which molten plastic is injected into a hollow mold, and then high-pressure air is used to blow it up and attach it to the inner wall of the mold for cooling and solidification. This method can produce hollow containers and other products, with high production capacity and lightweight products.

Compression Molding

Compression molding puts the preheated plastic concentrate into a heated mold, and then compacts it under high pressure to cool and solidify. This process is often used to produce flat or simple shapes.

Rotational Molding

Rotational molding is a method of injecting plastic powder or liquid into a rotatable mold, using heating and centrifugal force to make it evenly distributed on the mold wall for cooling and molding, which is suitable for the production of large hollow products.