Advantages Of Using Hot Runner

1) Shorten the molding cycle

Because there is no limit to the cooling time of the sprue system, the parts can be ejected in time after being formed and solidified. Many thin-walled small parts produced with hot runner molds can be molded in less than 5 seconds.

2) Save plastic raw materials

There is no cold runner in the full hot runner mold, so there is no production cost. This is particularly significant for applications where plastics are expensive. In fact, the major hot runner manufacturers in the world have developed rapidly in the era when oil and plastic raw materials are expensive in the world, because hot runner technology is an effective way to reduce waste and reduce raw material costs.

3) Reduce waste products and improve product quality

In the hot runner mold forming process, the plastic melt temperature is accurately controlled in the runner system. Plastic can flow into the mold cavities in a more uniform state, and the result is parts of consistent quality. The gate of the hot runner molded parts is of good quality, the residual stress after demolding is low, and the deformation of the parts is small. Therefore, many high-quality products on the market are produced by hot runner molds.

4) Eliminate subsequent processes, which is conducive to production automation

After the hot runner mold is formed, the finished product is the finished product without the need to trim the gate and recycle the cold runner and other processes, which is conducive to production automation. Many product manufacturers at home and abroad have combined the hot runner and automation to greatly improve production efficiency.

5) Expand the application scope of injection molding process

Many advanced plastic molding processes are developed on the basis of hot runner technology. Such as PET preform manufacturing, multi-color co-injection in the mold, multiple material co-injection process, STACK MOLD (stacked box casting mold), etc.