PURPOSE: To prevent the floating of corrugated paper without machining grooves to each roll by installing a adhesives feeder while being opposed to an upper stage roll and mounting a starching device while being opposed to a lower stage roll.

CONSTITUTION: When a device is operated under the state in which a adhesives feeder 7 is disposed so as to abut a adhesives attaching roll 9 against the outer surface of a corrugating medium 3 and a starching device 12 is arranged so as to abut a starching roll 14 against the stepped top 3a of corrugated paper 3A, the whole surface of the outer surface of the corrugating medium 3 is coated with an adhesives 6 through the adhesives attaching roll 9. when the corrugating medium is molded to corrugated paper 3A by the engagement of an upper stage roll 1 and a lower stage roll 2, corrugated paper 3A is moved together with the lower stepped roll 2 but the corrugating medium is brought to the state in which the corrugating medium is attached on the whole rear of corrugated paper 3A through the adhesives 6 on the tooth surface of the lower stepped roll 2, and corrugated paper 3A is shifted without floating. The corrugated paper 3A reaches a starching device 12, and the stepped top 3A is coated with a starch liquid 11 through a starching roll 14, and liner paper 4 is fed so as to be abutted against the stepped top 3a. Accordingly, a single-sided corrugated board can be manufactured without forming a groove to the toll.