. . "The instant invention is applicable to the quenching of any organic thermoplastic film-forming polymeric material, including, for example, polyesters such as polyethylene terephthalate, polyethylene-2,6-naphthalate, polytetramethylene-1,2-dioxybenzoate and polyethylene-1,5-naphthanate; polyamides such as polyhexamethylene adipamide, polyhexamethylene sebacamide and polycaproamide; and vinylidene c" . . . .