The monograph considers the main types and applications of polymer nets, analyzes methods and devices for their production, describes technological lines for the production of nets from various thermoplastic and thermosetting polymeric materials. Recommendations on rational carrying out of technological processes of producing polymer nets as well as mesh-reinforced sleeve films made of high-pressure polyethylene are given. For engineers and technicians of enterprises, research institutes and design organizations involved in the processing of polymers and plastics, as well as the development of appropriate equipment. Also the monograph can be useful for students of higher technical educational institutions.