Three Generations of Foamed Polymers

Increase of the output of gas-filled plastics is cormected first of all with the development of new types of compositions and of new h y efficient production methods. These materials are produced both under industrial conditions on transfer lines and directly at locations by casting or spraying. 

In the last decade several novel types of gas-filled polymers appeared which belong to the second generation integral (structural) plastic foams syntactic foams reinforced polymer foams multilayer foams (foamed laminates), metallized plastic foams mineral and metallic foamed materials obtained on the basis of foamed polymers laminated constructions on the basis of foamed polymers and monolithic (unfoamed) plastics, metals, paper, leather, etc. 

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