... machine hot melt coating gun 1. Air-open/air-close valving design can make interruption times to be 5000 per minute without ... stainless steel coating head ,which is durable and designed to close the body unit ,ensures the same temperature between the coating ... unit, which can be conveniently cleaned ,avoivds blocking the head Slot-die applicator,Suck-back coating gun,Coating head,textile laminating ...