molding plastic injection service

What is Plastic Injection Molding? 
Plastic injection molding is the process of heating raw material (plastic resin in pellet form, in our case) to its melting point, forcing the viscous material into a mold, and allowing it to cool into a hardened shape. Injection molded parts are used in virtually every product you encounter, from electronics to housewares to automotive to food packaging. At the highest level, it’s a very simple process, but there’s a very complex science that goes into doing it well—from creating the molds to understanding the chemical and physical properties of the materials. 

Plastic injection molding owes its existence to pressure die casting processes used for metals in the late 1800s. Plastics were introduced in the 1920s, although the process was still very crude at that time, with simple two-piece molds being manually clamped together. The art and science of plastic injection molding has come a long way since then.

 

Eight Steps to Perfect Parts

The plastic injection molding process can be summarized into eight steps:

The part is designed, and prototypes are created and tested.
A durable steel or aluminum mold (or tool) is designed and built. This process takes several weeks and includes a lot of complicated systems to control the process.
In production, raw material is loaded into a “feed hopper.”
The material is fed into a heated “barrel” where it becomes viscous—a state somewhere between solid and liquid.
The viscous material is forced by a plunger into a mold, which is held shut by hydraulics to withstand the pressure of the incoming material.
The material cools quickly in the mold and is ejected as a finished part after a predetermined time.
Quality assurance checks are performed on the part.
Meanwhile, the mold is closed again in preparation for the next processing cycle. 
Everything from colors and textures, to lettering, logos, and designs, to hinges and other functionality can be incorporated into the creation of a plastic part.

Why Choose Bergek
professional custom CNC Machining Parts Manufacturer in China

* Guangdong Aluminum Application Precision Technology Co, Ltd was established in 2012 and has over 10 years experience of in researching. developing and manufacturing CNC Machining Parts
* We have the recognition of famous brand customers all over the world
* Our company has more than 200 professional employees and over 10000 sqm modern factory area
* Our products own many patents and quality system certifications ISO 9001
* Our products own many patents and quality system certifications ISO 9001 is over 250,000 tons, exported to over 120 countries.