What are the three processes by which polymer foams are produced?

Polymer Foam -

It is a type of foam, which is made up of the gas and solid phase combined to make a foam.

The Polymer foam have a lot of applications, for example,

It is used in the packaging of the disposable cups or glasses, for insulation of the furniture.

Polymer Foams are produced by the following process -

Extrusion. Slab-stock by pouring. Different forms of moulding such as Compression moulding, injection moulding. Solid state method.