Welleinrichtung und Verfahren zur Herstellung von Wellenpappen

摘要

A corrugator has an adhering section (B) equipped with a plurality of pressurizing units (i') separately disposed in series along a sheet conveying direction, where a front linerboard (1) and a rear linerboard (2) are adhered to each other to form a corrugated fiberboard sheet (5) and the corrugated fiberboard sheet formed in the adhering section is processed into a predetermined configuration in a processing section standing on the downstream side of the adhering section (B). The corrugator comprises sensors (14s), (14r) placed on the upstream side of the processing section for detecting moisture content conditions of the front linerboard (1) and the rear linerboard (2), respectively, moisturizing means (6s), (6r) provided on the upstream side of the sensors (14s), (14r) and on the downstream side of the adhering section (AA) for directly supplying moisture to surfaces of the front linerboard (1) and the rear linerboard (2) and a controller (17) for setting moisture quantities to be supplied from said moisturizing means (6s), (6r) on the basis of detection information from said sensors (14s), (14r). Such a corrugator and corrugated fiberboard sheet manufacturing method can accurately adjust the quantity of moisture included in a sheet to reliably suppress the warp deformation of the sheet with the passage of time.