Injection moulding system reduces process costs

Plastics machinery supplier Krauss Maffei of Munich, Germany, has installed an all-electric EX series injection moulding machine for a customer in Germany; the system is said to substantially reduce processing costs.

Plastics machinery supplier Krauss Maffei of Munich, Germany, has installed an all-electric EX series injection moulding machine for a customer in Germany; the system is said to substantially reduce processing costs.

Krauss Maffei is represented in Oceania by HBM Plastics Technologies.

The machine is being used to inject liquid silicone seals onto polyamide Grivory HT1V substrates with 40 per cent glass fiber content at manufacturer Bernhard Kneifel Werkzeugbau GmbH in Bad Aibling, Germany.

The company builds moulds and tooling, and also runs a contract moulding operation, supplying components to many sectors, including the white goods sector.

Kneifel has reduced its logistic efforts and increased the yield of its components, by producing the silicone seal application in-house, the company claims.

The Krauss Maffei EX Series Injection Moulding machinery was reportedly chosen because of its speed and high precision.

The three platen electric clamp unit features a unique Z-toggle system. The number of moving parts has been reduced to provide higher precision and reliability and to lower wear, the company claims.

The plasticising and injection units are direct drive systems with high-torque motors. The force of two coupled electric motors is transmitted directly to the screw.

Managing Directors Martin & Andreas Kneifel from the install company said of their decision to bring the process step in-house: “We are able to save substantial processing costs. We’ve eliminated the logistic efforts and transport costs, and also the necessity for cleaning and reheating the substrates before applying the seal. Despite the extra effort involved, the yield of good parts never matched what we are now regularly achieving – our reject rate is now close to zero.”