Second injection molding

author: Universe plastic

2024-04-20

What is secondary injection molding

Secondary injection molding is a special plastic molding process. After a certain plastic material is molded in a primary plastic mold, the molded parts are taken out and placed in the secondary molding mold to inject the same or another plastic material again. Craftsmanship. Make the appearance and craftsmanship of plastic products meet the desired requirements.

The process of secondary injection molding

First: mold a certain plastic raw material in a plastic mold.

Then: take out the molded parts, put them into the secondary molding mold, and inject the same or another plastic material again for molding.

Application of secondary injection molding

In the automotive industry, secondary injection molding can be used to manufacture parts such as bumpers and door handles;

In the home appliance industry, it can be used to manufacture components such as TV remote controls and washing machine buttons;

In the electronics industry, it can be used to make mobile phone cases, computer keyboards and other components.

Advantages of secondary injection molding

Complex product designs and higher product quality can be achieved.

It can reduce the weight of products, reduce costs and improve production efficiency.

By using different plastic materials, multiple functions can be achieved in one molding process, such as enhancing the product's wear resistance, impact resistance, waterproofness, etc.

Restrictions and Requirements for Overmolding

Two or more different plastic materials need to be used, so compatibility between these materials needs to be ensured to avoid chemical reactions or changes in physical properties during the molding process.

Consideration needs to be given to the design and manufacturing of the mold to ensure accuracy and stability during the molding process.

Plastic manufacturing process: high-gloss injection molding

Injection molding problem: improving plastic gloss