What are the differences between injection molding mold and blowing molding mold

Summary: The two processing technology of mold products are injection molding and blowing plastic. They each have their own char...
The two processing technology of mold products are injection molding and blowing plastic. They each have their own characteristics. Simply put, the blow molding molds use the "injection+blow" method. The molding type is an empty core. The injection mold has the cross section of the port.
1. injection molding mold
Injecting is to formulate the material, that is, the plastic material is melted, and then the mold cavity is injected, the plastic enters the mold and cooled, and then processed into the required shape. Machined processing. In addition, the injection molding process can control the details well. During the injection molding process, protruding, ribs, threads and other parts can be formed in one step.
Blowing plastic is a relatively fast -growing plastic processing method, which is also known as hollow blow molding. Its processing principle is to put the thermoplastic resin or pipe -shaped plastic blank obtained by the injection molding into the mold, and then the compressed air is injected into the mold after the mold is closed, the plastic blank is inflated and close to the inner wall of the mold, and then the required needed to get the need for cooling and release molds Hollow products.
It is worth mentioning that it is very similar to blowing molding in hollow products. The manufacturing process of blowing plastic film does not use molds in principle, which is completely different from processing injection molding. According to the production method, the blow molding molding can be divided into squeezing and blowing molding and injection blow molding molding. The new development direction is multi -layer blowstration and stretching blow molding.
Third, the difference between blowing plastic and injection molding molds
In fact, the product expression of injection molding mold and blowing mold is the main difference. The products manufactured by the injection molding process are usually thicker, the manufacturing is relatively simple, and the requirements for raw materials are relatively low. Different and transparent products are different. Because of this, there are certain requirements for the toughness and stretching performance of raw materials, and the processing requirements of blow molding molds are relatively high.
Injecting molds and blowing molds are widely used in daily life, and the two have their own advantages and characteristics, and the development prospects are good.