Use of renewable materials such as plant fibers and manufacture waste has been popular for a long time and is being used more and more. Lignocellulose reinforcement components can significantly improve properties of the polyolefin composites depending on the pre-treatment chosen and the intended purpose [1-3]. Research is focused on improving properties of LLDPE composites reinforced with waste from hemp primary processing which consists of secondary fibers, shives particles and fragments of the primary fibers. Hemp particle surfaces cleanliness of dust applying alkali pre-treatment and sol-gel treatment to reduce hydrophilicity of natural component were performed. Cross-linking between the filler and the polymeric matrix is provided with silane treatment. The eight composites variants with different fibers component pre-treatments but fixed hemp waste content (40 wt.%) were produced on two rolls mill [4].