Canadian Plastics

Study Demonstrates Cycle Time Reduction

Canadian Plastics   



Krauss-Maffei and Milliken Chemical recently joined forces in an injection-molding trial showing a 10% cycle time reduction in the production of a 33 gal. polypropylene container. The container was molded from a masterbatch resin incorporating Mil...

Krauss-Maffei and Milliken Chemical recently joined forces in an injection-molding trial showing a 10% cycle time reduction in the production of a 33 gal. polypropylene container. The container was molded from a masterbatch resin incorporating Milliken’s high-speed nucleating agent, Hyperform.

“Hyperform causes the polypropylene to crystallize faster, reducing the overall cycle time from 30 to 28.5 seconds,” said Peter Lipp, national sales manager for Krauss-Maffei. “This process improvement translates into an overall production rate improvement of 45,000 additional parts per year per machine.”

The trials were conducted on Krauss-Maffei’s newest and largest machine, KM1300-12000MX, which has 1,430 tons of clamping force and can deliver a maximum shot weight of 14 lb. The machine was equipped with a Krauss-Maffei linear robot, which was fully integrated in the molding machine controller. Milliken’s Hyperform concentrate, H15-5, was added to the resin at a 1% loading.

In addition to improved cycle time, Hyperform also enhances product quality through improved dimensional stability, isotropic shrinkage and physical property balance. Applications for Hyperform in injection molding include storage totes, closures, automotive parts, lawn furniture, returnable plastic packaging and appliance parts.

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Krauss Maffei Corp. 859-283-0200

Milliken Chemical 864-503-0149

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