you guys have my curiousity going on this foam thing. what is it used for? i run into all types of foam padding in the packing sheds where i inspect, (usda) tear off sheets of a stiff white foam, springy, teated foam sheets, etc? am i close? if so, i'm stocking up, i can get free or next to free, they buy in such large quantities, and usually throw away the last 20-30 ft. of the roll.