resin 22 in the bath 20 and becoming the towpreg 16 then receives a coating of electrospun fibers as described below in the chamber 40 fig6 is an oblique view of the chamber 40 showing the resin coated tow or towpreg 16 entering the chamber through a left enter exit portal 41 on the left side of the view and traversing the chamber dotted line to receive a first coating of electrospun fibers not shown on its surface as discussed below and thus to become electrospun fiber coated towpreg 42 electrospun fiber coated towpreg 42 at the right end of fig6 reaches a pulley or roller 50 where its direction is reversed for a second pass through chamber 40 so as to receive a second coating of electrospun fiber after which it exits through portal 41 and is guided by a wheel 53 toward further processing treatments the pulley 50 is housed within an extension 54 shown in partial cutaway view at the right end the chamber 40 has a left end 44 a and a right end 44 b having attached respectively thereto a left vent connection housing 46 a and a right vent connection 46 b alternately the tow could pass through coating chamber once the left vent connection 46 a is a conduit for the towpreg fiber bundle 10 as it enters the chamber 40 and the electrospun fiber coated towpreg 42 as it exits after having been so coated inside the chamber tail piece 48 a.