Patent 0001354567: EXTRUSION PROCEDURE FOR OBTAINING FOAM POLYMER (BIM 41)
Innovative extrusion process developed for production of polymeric foams derived from post-consumer mixed plastics. The optimal control of temperatures, pressures, speed of extrusion process and amount of blowing agent, allows to obtain spherical form foams with controlled density and granulometry. This allows the use of such materials for creating lightweight,also structural concrete, overcoming the problems relating to high amount of air that remains trapped in cement mixture during mixing operations because of irregular shape of plastic flakes only triturated and densified.
The solution can be applied to the construction and furniture sectors.