Machine Design

New Product: Alternative to rubber-metal composites

Elastollan, a crosslinked thermoplastic polyurethane (TPU-X) overmolded onto structural thermoplastics, can replace rubber-metal composites.

During injection molding the TPU-X cross-links at the molecular level to structural thermoplastics such as Ultramid A3WG7 CR and A3WG10 CR glass fiber-reinforced polyamides (PAs). Coinjection molding is done in a single cycle and needs no bonding agent (primer). Cross-linking of Elastollan takes place at mold temperatures and within cycle times customary in injection molding. The TPU-X has a 60 Shore A hardness, withstands temperatures to 120°C, and resists chemicals.

Elastogran GmbH, a subsidiary of BASF AG, 49448 Lemfrde, Germany, +49 54 43 12-0, www.elastogran.de

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