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2022
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Hot runner composition and scope of application
Temperature control of plastics;
Plastic temperature control is extremely important in Toho hot runner mold applications. Many processing and product quality problems in the production process directly stem from the poor temperature control of the hot runner system. For example, the problem of poor gate quality when using needle valve hot runner injection molding, the difficulty of valve needle closing during needle valve molding, and the inconsistency of parts filling time and quality in multi-cavity molds. If possible, a hot runner system with multi-zone temperature control should be selected as far as possible to increase the flexibility and adaptability of use.
Control of plastic flow;
Plastic flow balance in Toho hot runner system. The gates should be opened at the same time so that the plastic fills the cavities synchronously. For the FAMILY MOLD where the weight of the parts is very different, the size of the gate should be designed and balanced. Otherwise, there will be problems such as insufficient mold filling and pressure retention for some parts, excessive mold filling and pressure retention for some parts, and poor quality due to excessive flash. The size design of the hot runner runner should be reasonable. If the size is too small, the pressure loss of the mold filling will be too large; if the size is too large, the volume of the hot runner will be too large, and the plastic will stay in the hot runner system for too long, which will damage the material properties and cause the parts to be unsatisfactory after molding. Requirements. Toho hot runner has MOLD FLOW mold flow analysis specially designed to help users carry out optimal runner design and product analysis.
Part size and weight;
The smallest parts made with Toho hot runner molds are below 0.1g, and the largest parts are more than 30kg. The application is extremely wide and flexible
Precautions;
Too large flash, poor quality and other problems. The size of the hot runner runner should be reasonably designed. If the size is too small, the pressure loss of the filling mold is too large. Due to the material properties, the parts cannot meet the requirements of use after molding.
scope of application;
Types of plastic materials Toho hot runner molds have been successfully used to process various plastic materials. Such as PP, PE, PS, ABS, PBT, PA, PSU, PC, POM, LCP, PVC, PET, PMMA, PEI, ABS /PC, etc. Any plastic material that can be processed with a cold runner mold can be processed with a hot runner mold..
E-mail: dghanmao656@126.com gongcheng @ himold.com
Dongguan Factory: No. 92--94, Jinghai Middle Road, Shatou South District, Chang'an Town, Dongguan City
Suzhou Factory: Building 28, No. 1 Industrial Park, Yingxin 1st Road, Luzhi Town, Wuzhong District, Suzhou City
Jiangxi Factory: Hexi Industrial Park, Xingan County, Jiangxi Province
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