Recycling the great amount of polymeric waste is the solution of our society polution problems. This goal may be reached by various pathways, some of them yielding in low-price raw materials for specific markets or even completely new compounds. Considering the thermoplastics, world comsumption is dominated by polyolefins (po) such as ldpe (29%), pvc (18%), pp (16%), hdpe (17%), as well as ps (8%), compared to polyamides (pa - 1,5%). Due to the properties of these two types of polymers, po/pa blends are highly appealing for various fields of application. Combining properties of polyolefins (melt stability, flexibility, impact strength, resistance towards water, low price production) and polyamides (melt flow, mechanical strength, high temperature and solvent resistance) it is possible to obtain new polymeric materials having improved characteristics. Despite of their poor compatibility, there are many formulations for po/pa blends which proves the interest of the researchers. Our study concerns the possibility to obtain SPE/PA blends based on polymeric waste, as follows: polyethylene foils used in agriculture for green-houses covers (secondary polyethylene, SPE) and polyamidic waste resulted from granulating and grinding operations of a copolyamidic polymer (coPA). The effects of components ratio on the thermal behaviour and mechanical properties of the blends have been evaluated by specific techniques.