Patent ID: 7855237

Claim:
A plant for the manufacture of foamed or foamable polymer particles comprising a side extruder for processing recycled propellant-containing foamable polymer particles; a heating means for the production of a recycling polymer melt from the recycled propellant-containing polymer particles in said extruder; a degasification apparatus for the degasification of the recycling polymer melt in said extruder; a first mixing apparatus for mixing of the recycling polymer melt to produce an essentially homogenous recycled polymer melt; at least one of a polymerisation plant having a reactor and a degasification apparatus for the manufacture of a polymer melt and a melting apparatus for the manufacture of a polymer melt by melting of polymer granulate; a supply apparatus for metering a propellant into the polymer melt; a second mixing apparatus for mixing the polymer melt and propellant; a cooling apparatus for cooling the propellant-containing polymer melt; and a third mixing apparatus for mixing the homogeneous recycled polymer melt and propellant-containing polymer melt to obtain a homogeneous polymer melt with a homogeneous distribution of propellant.