METHOD OF LOCALLY INFLUENCING RESIN PERMEABILITY OF A DRY PREFORM

摘要

A method of locally affecting resin permeability through a dry preform (10) having one or more reinforcing plies (202a, 202b, 202c) comprises at least one of the reinforcing ply layers (202a, 202b, 202c) of the dry preform (10). applying an optionally permeable veil 205 to; a selectively permeable bale having a bale pattern of a predetermined spatial density and adapted to be melted or melted into a resin to impart at least a local toughness to the preform upon resin loading and curing of the dry preform; Injecting the resin into the dry preform; and directing the resin through the optionally permeable veil (205) to impregnate the resin into the dry preform (10).