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Advantages and requirements of hot runner injection molding
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Advantages and requirements of hot runner injection molding

Views: 3     Author: Site Editor     Publish Time: 2022-11-04      Origin: Site

Advantages and requirements of hot runner injection molding

The hot runner can provide better product performance than the cold runner. By using the hot runner, the resin consumption can be reduced, the cycle time can be shortened, the last process can be omitted, and the operating cost can be significantly reduced compared with the cold runner. We will be based on many years of hot runner mold experience, on hot runner injection molding related issues to discuss.

The advantages of hot runner injection molding

1. No waste material will be produced to cause waste

The hot runner reduces the use of resin materials and reduces the need for stacking sites and disposal costs prior to abandonment. In addition, it can completely eliminate the mixed foreign matter caused by crushing treatment for reuse and the gate blockage caused by foreign matter.

2. Automatic cutting gate without secondary processing

Eliminating the need for gate cutting, the product alignment becomes easier after removing the molded product.

3. Eliminate the shortcomings of cold runner

Because the mold opening and closing time is shortened, the weighing and injection time is shortened, and the flow passage part does not need cooling, so the molding cycle time can be shortened.

4. Improve the dimensional accuracy of products


By controlling the temperature, flow rate and pressure of the resin near the molding part, the differences between the cavities can be reduced and the dimensional accuracy and transferability can be improved.

Two. Hot runner injection molding requirements

1. Plastic raw material requirements for hot runner

As long as the mold design is combined with the performance of plastic parts, almost all thermoplastics can use hot runner injection molding, but at present the most used in hot runner injection molding is polyethylene, polypropylene, polystyrene, polyacrylonitrile, polyvinyl chloride and ABS. When the hot runner casting system is used to form plastic parts, the raw material properties of plastic parts are required to have strong adaptability.

2. Product requirements for hot runner mold

The hot runner mold is generally used in the following products: the product is sensitive to heat; The product is large or the wall is thin; The flow passage is too long; In the case of large quantity of products; Product appearance or high precision requirements, etc.


Hot runner through the built-in electric heating runner part in the mold, the injection molding process can be completed in the runner part without any waste, can reduce the defect rate, improve the production efficiency and quality. The mission of Fanstar is to master the core technology of injection molding production, communicate and analyze the technology before mold production with customers from the production needs of finished products, so that the mold delivery time is short, the service life is long, the rapid mass production and the finished product quality is excellent! Welcome to contact us if you need hot runner injection mold!




Name: Iwan Fandra 丨Director
Tel: +86 198 2019 2009

E-mail: fandra77@vertical-china.com


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