en.Wedoany.com Reported - German EPC Engineering & Technologies GmbH based in Arnstadt, together with Coperion, USA, has developed a direct compounding technology for the production of PC (polycarbonate). This process directly feeds the PC melt from the final polymerization reactor, along with other plastics such as ABS and additives, into a one-step direct compounding extruder. Subsequently, a Coperion ZSK twin-screw extruder mixes and homogenizes the pre-formed melt, completing the final pelletizing.

This direct compounding process was publicly showcased at the K trade fair. According to Coperion, the process integrates multiple existing technologies and combines them in an innovative way, achieving higher flexibility and simplified operation. The direct compounding technology reduces intermediate steps, eliminating the need for storing and conveying PC pellets and skipping secondary heating and melting steps, thereby significantly reducing energy consumption.

This direct compounding process enables cost-effective production of high-quality PC products through non-phosgene polymerization, reducing the overall complexity of the process.

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