Plastic extruding 3 layers co-extrusion coating machine is based on LDPE,LLDPE,HDPE(EVA)as material, adopts technology, it can produce CPP,CPE transparent film and flower pressing film. It is equipped with thickness measuring instrument to ensure film extrusion and coating quality. coating and shaping roller adopts compulsory water cooling structure which makes cooling effect good. All the technology rollers 1 leaving and combining is controlled by pneumatic structure. It has the advantages of reasonable structure ,convenient operation, advanced technology, low power consumption, high efficiency, even film product, flat winding effect, which is an ideal equipment for plastic film packing material production. High quality one-layer-multi-layer coating film used in many fields.