| 摘要 |
<p>The present invention improves a bonding strength between a core paper web and a corrugated web by maintaining a temperature of a single-faced cardboard sheet constant, reduces damages in a single-facer expected when foreign matters are bitten between a downstream side corrugating roll and an upstream side corrugating roll, and also achieves effective utilization of a peripheral space. In a single facer including a pair of corrugating rolls (1, 2) for corrugating a core paper web (3), a paste application member (16) for applying paste to corrugated crest portions of the paper web and an endless belt (7) for pressing a liner (5) against the core paper web to stick them together to form a single faced cardboard sheet (6), at least either one of a pressing force and a wrapping angle (θ) of the endless belt is regulated by detecting a surface temperature of the single-faced cardboard sheet with a temperature sensor (13) and controlling a cylinder for moving one of the corrugating rolls via a temperature regulator (14) and an electro-pneumatic converter (15) in response to the detection signal, and thereby the surface temperature of the single-faced cardboard sheet (6) can be maintained constant. <IMAGE></p> |
