Foam Constituents

The major constituents of foam are Poly Propylene Glycol (PPG), Toulene Di Isocynate (TDI), Metheylene Chloride, liquid Carbon Dioxide (CO₂) or Freon 11 then stabilizer Silicone and Catalysts Amine Stannous Octoate and some additive like Pigments fire retardant anti Scortch etc are used in foam.

Foaming process

Foaming process is a good example of exothermic chemical blowing agent water, Metheylene or both, first the blowing reaction occurs and hence the heat generates this generated heat used in the polymerization reaction. Catalyst Amine and Tin balances these reaction and the stabilizer Silicone stabilizes it. the additives show there own properties.
All chemicals through separate streams come in a mixing chamber in prefixed ratio. In the start this mixture is in liquid form after 15-22 seconds they come to foaming state and than the foam start rising up.  After about two minutes they got the shape of foam cake.

Continuous process

In continuous process of max foam technology through the mixing chamber the mixture  of chemical is poured in a pot named trough, there it stay for few seconds and than it comes out from the lip of the pot it the foaming state on the there dimensional paper conveyor which drags the paper with the foam. On the fall plate the foam start rising slowly and it get the shape of cake after few seconds as the conveyor runs the cake go forward and its length increases. At the end of the plant there is a machine named block cutter it cuts this lengthy continuous cake into cake of desired length.