Abstract: The processing parameters of impregating temperature,clearance of roller,velocity in manufaturing hot-melt prepreg of carbon fiber/epoxy have been studied with hot-melt prepreg machine of 300mm width. Several problems in the preimpregating process were analyzed. And the optimum process parameters were obtained as follows:preimpregating temperature:100~105℃,preimpregating velocity:4~5m/min,interval of pressure roller:380~400μm,temperature of cooling plate:about 16℃,winding tension:300N/m.

Key words: hot-melt prepreg, preimpregating temperature, preimpregating velocity, interval of pressure roller