gathered into one or more strands and collected as a roving the glass fibers are then dried to reduce their moisture content preferably the chemically treated glass fibers are dried at temperature and time conditions equivalent to a temperature in the range of about 121 u00b0 c to 149 u00b0 c for approximately 11 hours the drying can be accomplished in any conventional glass fiber drying oven such as forced air ovens di electric ovens and the like this results in a dried residue of the aqueous chemical treating composition being present on the surfaces of the glass fibers making up the strands preferably the amount of dried residue on the glass fibers is in the range of about 0 5 to around 2 weight percent loi fig1 shows the particle size in nanometers of four sizing compositions each with a different epoxy emulsion having a given amount of the surfactant the surfactant is the prox e 117 material for the triangular symbols that are connected by the best fit curve the diamond symbol represents an epoxy emulsion made with the three component emulsifier system having pluronic f 108 poly oxy ethylene oxypropylene copolymer from basf corp emulphor el 719 polyoxyethylated vegetable oil from gaf corp and igepal ca 630 octyl phenoxypoly ethyleneoxyethanol also from gaf corp the square symbol represents an emulsion made with a pluronic f 68 surfactant and the pyramid symbol indicates an emulsion made with a pluronic f 108 surfactant the values over the symbols are the exact particle size measurement in nanometers the size of the diamond symbol is a control that was.