Producing foam bodies

A method for manufacturing a foam body, such as a foam insulation board, comprising the steps of:

• (i) providing foam reactant materials which react to form a foam body;
• (ii) providing a blowing agent;
• (iii) expanding, during reaction of the foam reactant materials, the foam reactant materials, using the blowing agent so as to form a foam body having cells defined therein and within which cells blowing agent is trapped;
• and
• (iv) collecting blowing agent not trapped within the foam body.

An apparatus for manufacturing a foam body comprising:

• (i) a dispenser for dispensing foam reactant materials;
• (ii) a dispenser for dispensing a blowing agent;
• (iii) a device within which the reactant materials can react so as to form a foam body having cells defined therein and within which cells blowing agent is trapped;
• (iv) a collector for collecting blowing agent not trapped within the foam body, optionally as part of a mixture;
• (v) optionally, a reuse system for reusing the collected blowing agent not trapped within the foam body,
• the reuse system for reusing the collected blowing agent not trapped within the foam body which comprises a continuous production device for continually reusing the collected blowing agent not trapped within the foam body.