Gymnastic mat - with foam core and an outer casing impregnated with foam reaction mixt

摘要

The outer casing is a fine meshed net fabric impregnated with a foam reaction mixture of PVC, polyamide, polyester or synthetic or natural latex etc. which is laid on the core and then heat or chemically activated so that the foam expands and penetrates into the compsn. foam core rigidly bonding casing and core together.