METHOD AND DEVICE FOR DRYING APPLICATION LIQUID FORMULATION

PURPOSE: A drying method of the coating liquid agent at the drying oven and an apparatus thereof are provided to dry both an aqueous coating liquid agent and an oily coating liquid agent without reducing a travelling speed (over 120m / min), in a compact drying zone of a drying oven to be used for a printer. CONSTITUTION: A liquid agent dissolving an aqueous or a solvent component is uniformly spread on a material by a coating roll. The opposite surface of the material applying liquid agent is contacted to a plurality of guide rolls in a drying oven. A drying method by strongly blowing hot air to a liquid agent side of the material is that forward end sections of a plurality of guide rolls are used as heating guide rolls and the back portions of the rest are used as cooling guide rolls at the same time, that Right after being introduced in the drying oven, the material is heated by the heating guide rolls, and a temperature of water of the solvent is above the boiling point, and that thereafter, the material is cooled by the cooling guide rolls to keep a temperature, in which the material is not transfigured. The drying method detects a temperature of the material before being dried, and adjusts a temperature of the cooling guide roll in order that a temperature of the material after being dried is approximately identical to the temperature of the material before being dried. The drying method drives by force the heating guide roll and the cooling guide roll, and tunes with a sending speed of the material. The drying method includes a detection means detecting a temperature of the material before being dried; and a controller, which enters temperature information detected from the temperature detection means and controls a temperature of the cooling guide roll(223b) to make the temperature of the material before being dried approximately identical based on the entered temperature information. The drying apparatus includes a heating means injecting warm water or heating oil into a heating guide roll (223a); and a cooling means injecting cooling water into a cooling guide roll. The drying apparatus includes a belt(242) driving the heating guide roll and the cooling guide roll; and a motor(241) driving the belt.