... ,sponge,foam,shoe material, EVA to be coated evenly with hot melt glue 3)Semi-automatic 4)Dual rollers Features:1 ... .Fully enclosed structure and no leaking glue;5.The whole machine has protection functions such as overheat ,short circuit,overload and ... roller can be adjusted 5-100mm. WZ-S600L Dual rollers hot melt gule machine