Die zwei Kunststoffkomponenten sind im Spritzguss miteinander verbunden, so dass ein Montageschritt entfällt.
Bildquelle: BASF

The snow chains made from the two TPU B90A15 and B60A10WH meet the ÖNORM 5117 standard, which applies across Europe, are suitable for different tire sizes, and easy to fit. The TPU versions are abrasion resistant, flexible at low temperatures, and resistant to loose chippings and road salt. (Source: BASF)

This has become possible with Elastollan, the thermoplastic polyurethane (TPU) from BASF, and BASF’s support in optimizing the component geometry and production. For this new plastic application, the TPU offers an excellent combination of lightweight construction and serial production: the conventional metal chain mesh is replaced by two Elastollan grades of different colors that chemically adhere to one another in the injection-molding process, and so do not have to be additionally assembled.

The black Elastollan B90A15 with a harder setting displays very good mechanical properties along with great flexibility at low temperatures; the red  B60A10WH is more flexible and easy flowing. In compact injection molding, the black chain links are overmolded with the red TPU in one mold where they join chemically.