CORRUGATED FIBERBOARD SHEET MANUFACTURING APPARATUS
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United States of America Patent
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Issued Date -
Dec 22, 2022
app pub date -
Sep 2, 2020
filing date -
Sep 2, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
“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.”
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