Patent ID: 8895635

Claim:
A foam product comprising: a thermoplastic foam material selected from the group consisting of polystyrene, polyethylene, polypropylene, or mixtures thereof; and a blowing agent comprising a hydrochlorofluoroolefin selected from the group consisting of 1-chloro-3,3,3-trifluoropropene, 2-chloro-3,3,3-trifluoropropene, or mixtures thereof and a hydrofluorocarbon coblowing agent selected from 1,1,1,2-tetrafluoroethane, 3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene or mixtures thereof; wherein said foam product exhibits a density below 50 kg/m 3 and an open cell content of 10% or less at a blowing agent loading of from 8 to 10 wt %.