The utility model relates to the technical field of electrolytic
copper foils, in particular to an electrolytic
copper foil
drying device which comprises a driving roller, an
air knife and a
drying oven, and the driving roller and the
drying oven are sequentially arranged in the transmission direction of the electrolytic
copper foils. The number of the transmission rollers is at least two, and the at least two transmission rollers are sequentially arranged in the transmission direction of the electrolytic
copper foil and used for supporting and driving the electrolytic
copper foil to move. The number of the air knives is consistent with that of the transmission rollers, and the air knives are sequentially arranged in the transmission direction of the electrolytic
copper foil and used for air-drying the electrolytic copper foil supported on the transmission rollers. The electrolytic copper foil is dried in advance through the
air knife, the temperature of the
air knife and the oven can be 200 DEG C or below, and the situation that a
coupling agent is denatured and fails due to long-time high-temperature baking is avoided; the transmission roller and the air knife are used in cooperation, under the supporting effect of the transmission roller, the air knife completes
air drying treatment on the surface of the electrolytic copper foil, and the problem that the copper foil is wrinkled due to shaking caused by wind is solved.