Plastics are relatively new materials used in almost all areas of human activity, and also in various branches of live and industries. Given the annually growing produce of plastics, their volume are evenly growing up also in the waste, therefore it is necessary to solve the waste from the increasing volume of waste plastic. The contribution deals with the using and testing of sorted plastic waste. From the plastic waste as a semi-product is prepared the plastic plates by extruding technology, it means recycled plastics processing and verifying of their selected mechanical properties. It also deals with testing of selected plastic shaped plates. There are mentioned also the most usual impurities in the testing samples, created during the production. Contribution was originated as collaboration with TOPlast, Inc. Kosice.