K 2013: Water spray may boost viability of gas injection process

A new technology on display at K 2013 starting tomorrow uses an aerosol type jetting process to create hollow parts.

Water is sprayed inside the part during gas injection, reducing foaming. The technology was developed by the Institute of Plastics Processing (IKV) at RWTH Aachen University and licensed to PME fluidtec GmbH (Ettenheim, Germany).

"The aerosol input provides the processing window of gas injection with the cycle times of water injection," Thilo Stier, one of the developers of the process, said in an interview with PlasticsToday. Stier is Innovation Manager at AKRO-Plastic, a compounder based in Niederzissen, Germany.

Stier said the process is ideally suited for door handles, which are often hollowed out to reduce weight and cost.

"Water injection requires a lot of processing knowhow," Stier said in the interview. It's possible the approach could be added as an option to most gas systems sold by PME fluidtec.

The technology will be on display starting tomorrow in the AKRO-Plastic booth (Hall 6/B42)...

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