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Abstract

A plastic foam material based on polyolefins containing 50-90 wt. % of polypropylene-based plastic and 10-50 wt. % of polyethylene-based plastic with a melt flow index MFI (190.degree. C./2.16 kg) of less than 50 g/10 min is described, where the plastic foam material has a density of 0.03-0.2 g/cm.sup.3. This plastic foam material is characterized in that it contains 20-70 wt. % of crosslinked polyolefin, in that the polyethylene-based plastic has a melt flow index MFI (190.degree. C./2.16 kg) of less than 2 g/10 min and more than 0.05 g/10 min, and in that the polypropylene-based plastic has a molecular weight (weight-average molecular weight) of 150,000-600,000 g/mol. This product can be used to particular advantage for the production of interior linings of motor vehicles and the like. In particular, it has superior elongation values at room temperature.

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