How to choose a cold or hot runner?
When choosing a runner system for an injection mold project, several factors need to be considered, including plastic product requirements, product cost factors, and raw materials. You can refer to the following principles to choose the runner properly.
1. Plastic product requirements
Production efficiency. If you need higher production efficiency, a hot runner is a better choice. Since the hot runner can hear and maintain the molten state of the plastic in the runner, the processing time can be greatly shortened, thereby improving production efficiency.
Product quality. If you have high product quality requirements, a hot runner can provide better control. The hot runner can adjust the runner temperature as needed to eliminate or reduce defects on the products, such as short shots, and deformation.
2. Product cost factors
Initial investment. Hot runner systems are generally more expensive than cold runners, which involve the cost of purchasing hot runner equipment and installation.
Production costs. Hot runner system can reduce material wastes, which can lower product costs in the long term production.
3. Raw materials
Melting temperature. Some special plastic materials have higher requirements for hot runner systems and need to provide higher melting temperatures to keep the material in a molten state. If the plastic material you use requires a high melting temperature, a hot runner may be a better choice.
Thermal stability. Some plastic materials have higher requirements for the thermal stability of the hot runner system. When choosing a hot runner system, it is necessary to ensure that it can meet the requirements of the plastic material used.
If your product requires higher production efficiency and better quality control, and you have a sufficient budget, a hot runner may be a better choice, otherwise, a cold runner may be a more economical choice. Shanghai Future Mould is a company specializing in the design and processing of injection molds. Welcome to consult.
