CPC B29C 48/09 (2019.02) [B29C 48/0012 (2019.02); B29C 44/355 (2013.01); B29C 48/2886 (2019.02); B29C 2948/92704 (2019.02); B29K 2023/06 (2013.01); B29K 2023/12 (2013.01)] | 15 Claims |
1. A WPC extrusion profile comprising:
a WPC material in which plant fibers are embedded in a plastic matrix, wherein:
the WPC material has a content of naturally growing plant fibers of between 30 and 75 wt-%
the WPC extrusion profile includes at least one hollow chamber,
the at least one hollow chamber of the WPC extrusion profile is completely filled up with a foam, in particular a closed-pore foam
the foam consists of a plastic material of the same type of plastic as the matrix of the WPC material,
foaming takes place with a physically acting blowing agent, in particular CO2,
the density of the foam is less than 0.4 g/cm3, and
the average cell size of the foam has a mean diameter of less than 0.4 mm.
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