公开(公告)号：US20220402231A1

公开(公告)日：2022-12-22

申请号：US17641750

申请日：2020-09-02

申请人： Rengo Co., Ltd.

发明人： Takuji YANO ,  Hiroshi TAHARA

IPC分类号： B31F1/28

摘要： “A controller of a corrugated fiberboard sheet manufacturing apparatus can execute a steady operation where a corrugating roll rotates at a first set speed, a deceleration operation where the corrugating roll is decelerated to a second set speed, and an acceleration operation where the corrugating roll is accelerated to a third set speed. In the steady operation, the controller set an on-off valve to a closed state for steam supply to a hollow portion at a first set pressure by a pressure adjusting valve. In the deceleration operation, the controller maintains states of the valves. In the acceleration operation, the controller switches the on-off valve to an open state, and adjusts the pressure adjusting valve for steam supply to the hollow portion at a second set pressure.”