The invention relates to a hot melt adhesive coater, which comprises: one adhesive extruder, one adhesive heater and one couple of guide supports; the adhesive extruder comprises a motor, a speed reducer, a material hopper, a screw box, and a support; the adhesive heater has one hot melt adhesive box, an electric heating template, a clamp template and a hole template; a couple of guide supports are fixed on the working bench packed with aluminum muffle, with one adjusting block relative to two ends of hot melt adhesive box, to be lifted by adjusting screw; each adjusting block has tubular hole relative to the tube groove on the walls of two ends of hot melt adhesive box. When the aluminum muffle is packed, it emerges hot melt adhesive to seal the seam of aluminum muffle. |