elongate products are molded in a die from fiber reinforced plastics by drawing a bundle of tows through a bath of resin and between two portions of an open die , which is closed under high pressure , and heated to cure the resin . the die is opened and the product is then partly withdrawn lengthwise , to draw further wetted tows between the die portions , and the die is again closed , clamping the tail end of the already cured product which still projects into the die space , or clamping blocks at its downstream end . cold clamping blocks also clamp the tows at the die upstream end . the products are subsequently severed externally of the die by cutter wheels .