The blowing agent mixture is compounded into the starting low stiffness polymer resin in proportions to make {HEAD ~ the desired degree} of expansion in {TAIL ~ the resulting foamed cellular product}, usually up to about 40 fold volume expansion to make products having foam densities down to about 0.024 g/cc  
The blowing agent mixture is compounded into the starting low stiffness polymer resin in proportions to make { HEAD ~ the desired degree } of expansion in { TAIL ~ the resulting foamed cellular product } , usually up to about 40 fold volume expansion to make products having foam densities down to about 0.024 g / cc
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH