Answer:
1.Molding
a.Cold molding
b.Hot molding
2.Slab stock
Explanation:
Polymer foam:
When solid and gas phases are mixed then they produce polymer foam.The gas used during forming of polymer foam is know as blowing agent and can be physical or chemical.Physical agent will not react and act as inert while chemical agent take part in reaction.
Blowing agent-Carbon diaoxide and Hydrochlorofluorocarbons.
Example of polymer foams-Polyurethane ,Starch etc.
Polymer foam can be produce by following process
1.Molding
a.Cold molding
b.Hot molding
2.Slab stock
