Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1995-06-16
1996-06-18
Simmons, David A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156351, 156359, 364471, B32B 3100
Patent
active
055274080
ABSTRACT:
A method and apparatus for automatically controlling the moisture content of corrugated board manufactured along a corrugated board production line. Moisture control apparatus (5) has a top liner board moisture sensor (45) and a bottom liner board moisture sensor (46) stationed along the corrugated board production line (7) which read the moisture content percentage of the top liner board (12) and bottom liner board (23) of a combined corrugated board (38). The moisture control apparatus also includes a line speed sensor (47) which measures the line speed of the corrugated board production line. The moisture control sensors (45, 46) signal a central processing unit (50) with a signal proportional to the measured moisture content percentage of the top liner board and bottom liner board, respectively. Central processing unit (50) compares the data received from the moisture sensor against separate moisture content setpoints established for the top liner board and the bottom liner board, and in turn signals the wrap arms (26, 27) of a pre-heater assembly (20) for increasing or decreasing the amount of top liner board wrap along a portion of the heating drum (27, 31) of either a "B" flute wrap arm pre-heater assembly (25) or a "C" flute wrap pre-heater assembly (29). Central processing unit (50) also signals a wrap arm (34) of a bottom liner board wrap arm pre-heater assembly (33) to increase or decrease the amount of bottom liner board wrap in surface contact with heating drum (35) of bottom liner board wrap arm pre-heater assembly, so that the measured moisture content of the top liner board and bottom liner board falls within a deadband moisture content range.
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Rivard Paul M.
Simmons David A.
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