Machining of non-homogeneous composite material with natural fibers reinforcement and HDPE matrix

Depending on expanding population and its increasing purchasing power we are forced to use more and more renewable resources for a production of materials. When compared to other types of fibres, the natural fibres have a lot of advantages: they are affordable (only 1/10 of a glass fibre price), non- abrasive, recyclable, with relatively high strength and rigidity, low density (and low weight - in hollow profiles). When combined with plastic matrix the exceptional biomaterial, which is possible to describe as 'friendly environment', is created. It has high potential to succeed with a final customer. At present, a use of thermoplastic matrices (especially with WPC materials) is preferred. The final subject of this article is to point out considerable disadvantage from a perspective of machining - inhomogeneity of the material (in full profiles).