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June 1, 2008

1 Min Read
Pick your runner with ease

Injection molding

Volastic?s Bob Fill.

This hot runner manufacturer has tried to take some of the complexity out of specifying hot runner systems through an on-line system whereby the processor only need enter part and tooling details. ?We?ve completely done away with catalogs and find our system generally gives us enough info to generate a Parasolid model and quote the job,? says Bob Fill, who founded this firm after leaving Mastip. ?If the tool is overly complex, we might have more direct interaction in the initial stages with the client,? he adds.His firm says it also has made advances in tip design. ?Most hot runners in the market we find run at elevated temperatures higher than the barrel temperature. If PP runs at 200°C in the barrel, the hot runner system tip may be running at 270°C,? says Fill. ?You can get away with that with simple resins such as PP but with engineering plastics, the processing window is narrower.?Volastic?s solution is a tip comprised of three different materials with varying heat conductivities. ?One of these is a high-tech conditioned material to efficiently transfer heat to the tip,? says Fill. Meanwhile, a thermal barrier prevents heat loss and channels heat into the tip. This construction enables the tip to run at the same temperature as the injection barrel.Volastic, Bangkok, Thailand; +662 7121185-7; [email protected]; www.volastic.com

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