Plastic Injection Molding

What Are Plastic Injection Molding Services?

Plastic Injection molding services is one of the most commonly used manufacturing processes for manufacturing plastic parts. Because of its high accuracy, repeatability, and cost-effectiveness, plastic injection molding is used to manufacture a wide variety of products and parts, from the smallest medical device component to big automotive & aerospace components. Plastic injection molding processing need plastic injection mold, plastic raw material and injection molding machines. The plastic raw material is melted in an injection device and then injected into the injection mold, in which the melted plastic is cooled and solidified into the final plastic part. The main process in plastic injection molding are mold clamping, injection molding, cooling and ejection.

How Does Plastic Injection Molding Work?

• In injection molding, a polymer is injected into a mold under high pressure. Most often, this process are very short. The entire injection molding process typically takes between 2 seconds and 2 minutes. The cycle has four phases. These phases are clamping, injection, cooling and ejection 

  
  

• Clamping:  Close both sides of the mold  by clamping units before injecting the mold with material. Both halves can then be attached to the injection molding machine and the other half can slide. When the clamping unit pushes the two halves together, the material is injected and the halves are held tightly during the material injection.

  
  

• Injection: The plastic are fed into the injection molding machine using a hopper. These materials move towards the mold by the injection device. The plastics melts by the heat around the barrel and the pressure, and then injected into the mold. This process is called injection. 

  
  

• Cooling: During cooling phase, the plastic inside the mold starts to cool after it comes into contact with the inner mold. As the plastic in the mold cools, it solidifies into the desired shapes. 

  
  

• Ejection: The final phase is to eject the plastic part from the machine after the part cools. This is done by the ejection system. When the mold open, the plastic molded part is ejected out. It needs force as the part shrinks and sticks to the mold.  After injection, the mold can be closed again and another shot can be injected to restart the process.

Why Choose Us for Plastic Injection Molding Service?

Broad range of plastic materials

We can injection molding more than 100 plastic resins, also customized. 

High efficient and precision

All our injection molded part built on demand with lower cost compared to custom CNC machining. Depending on customer’s quantity need, we can injection molding ten prototype up to 10000 production parts.  

High volume production

Plastic Injection Molding Service is an ideal process for large production runs of 3,000-300,000+ parts.

Stable& Durable 

Our plastic injection molding produces end use molded parts with real engineering graded plastics which has excellent durability.

Quick Turnaround

If Rapid injection molding, prototype mold making can be completed within 3 weeks. And rapid injection molded parts can be shipped within 3-5 days.  

Outstanding surface

As an experienced precision machining service supplier, we precisely mill and polish our injection molds to achieve the specific polish requirement of the mold, also, other surface treatment like texture, mirror polish, etc are available.