METHOD AND APPARATUS FOR MAKING RESIN-IMPREGNATED FIBER SUBSTRATES

摘要

A method and apparatus are disclosed for forming a resin-impregnated fiber web that is particularly suitable for use in reinforced plastic composites and printed circuit board applications. The method includes the steps of drawing machine direction yarns (16) from multiple spools (14) contained in creels (15) arranged around a hollow cylinder (11); passing said yarns from the creels through a circular reed (23); pulling machine direction yarns (16) the length of the hollow cylinder's outer surface in a longitudinal direction; controlling the application of a resin to the yarns as they travel the length of the hollow cylinder; winding cross-direction yarns (42) around the periphery of the hollow cylinder thereby forming a web; heating and cooling the resulting web; and finally collecting the web on a roll (67).