PET (Polyethylene Terephthalate) film gluing and curing drying tunnel

The utility model discloses a PET film gluing and curing drying tunnel, and particularly relates to the technical field of PET film curing drying tunnels, the PET film gluing and curing drying tunnel comprises a drying tunnel shell, a plurality of gluing rollers are arranged in the drying tunnel shell, films are arranged among the gluing rollers, and a circulating drying mechanism is arranged in the drying tunnel shell; the circulating drying mechanism comprises a heating box, and the heating box is installed in the drying tunnel shell. By arranging the circulating drying mechanism and the purifying mechanism, hot air flow in the heating box can be recycled, the situation that hot air is wasted after being used once is avoided, the utilization rate of heat in the hot air is greatly increased, waste of a large amount of heat energy is avoided, and more energy conservation and environmental protection are achieved; and meanwhile, the temperature in the heating box rises faster due to circulation of the hot air