A dip-coating process includes immersing a member to be coated in a coating solution in a coating vessel and lifting the member to be coated while covering a side surface of the member to be coated with a telescopic sliding hood to form a coating film on a surface of the member to be coated. The telescopic sliding hood includes a plurality of tubular members connected so that their diameters successively decrease upward in a dip-coating direction, and can cover the side surface of the member to be coated by extending in association with the movement of the member to be coated during the lift of the member to be coated. While the member to be coated is being lifted, a downward airflow in the dip-coating direction is generated in a gap between an inner surface of the telescopic sliding hood and the member to be coated to discharge solvent vapor to outside the telescopic sliding hood.