US Patent 7413623 Apparatus for resin-impregnation of fibers for filament winding

A two roll impregnator for impregnating fiber reinforcement for use in filament winding operatives contains two abutting rolls, at least one and preferably both having an elastomeric surface. Resin is constrained within a bath whose lower surfaces are defined by the abutting rollers and side dams. Fiber reinforcement is drawn over a first roller through the resin bath and between the closed nip of the abutting rollers, where full impregnation is fostered, excess resin removed, and the impregnated fiber degassed. Substantially dripless operation can be maintained.