Recently, the customer service received a new development of CPVC injection molding customer for help. The customer said that when we purchased our CPVC injection plastic, we found that the product was easy to turn yellow and the processing was difficult. We asked for assistance. Our customer service staff first checked our workbook according to our CPVC injection molding process, and checked the processing temperature, speed and pressure with the customer. The customer indicated that they were all in accordance with the processing instructions. So the customer service will feedback this problem to the technical engineer for the first time, and ask the engineer to immediately call the customer to solve the problem.

After the technical and customer service docking has completed this information, it has been docked with the customer. After in-depth communication, we understand that the equipment used by customers has been PVC injection molding products, but it is not a special equipment for PVC injection molding. Previously produced PVC injection molding products, the structure is relatively simple, so the molding problems are not big. However, due to the relatively complicated mold structure of CPVC, the fluidity of CPVC injection molding is relatively poor compared with PVC injection molding. The shear heat in the CPVC injection molding process is too high, causing slight decomposition of the CPVC material to cause yellowing.

According to the current status of the customer's equipment, Jiahong Plastics Engineer recommends that the length of the nozzle be shortened and the flow path be modified or enlarged to avoid the material pressure being decomposed due to the instantaneous pressure increase of the injection glue, which can make the material smooth. The injection into the mold to solve the problem of yellowing of CPVC injection products.

Later customer service followed up with the customer, the customer said that according to the recommendations of our engineers to improve the product, has been injection molding, and delivered samples to their end customers to confirm. Yellowing during CPVC injection molding is a problem we noticed when we first developed materials, so engineers can quickly provide solutions when communicating with customers.

Wuxi Jiahong Plastic Technology Co., Ltd. has nearly 30 years of experience in research and development and granulation of modified PVC pellets. The professional technical service team can provide one-stop system solutions for customers. For more information about the product, please visit our official website: www.dw-ty.com, consult online customer service or call the hotline. Fixed line: 0510-68755207 Mobile: 15190220696, we will be happy to help you.

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