Method and apparatus for controlling a coating head, and a coating head
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United States of America Patent
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Jul 19, 2016
Grant Date -
Mar 14, 2013
app pub date -
May 25, 2010
filing date -
May 25, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus are described for controlling a coating head, which exerts a nip pressure to a fibrous web to be coated while the fibrous web is supported by a backing roll. An output signal of a sensor integrated within the backing roll is read, thus producing a measured indication of the nip pressure. A number of actuator control values are derived at least partly from said measured indication of the nip pressure. Said actuator control values are delivered as commands to a number of respective actuators that contribute to creating the nip pressure, to control an amount of a coating substance on the fibrous web in the coating head.
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International Classification(s)
- B05C:APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MAT....
- B05D:PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MAT....
- G01L:MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL ....
- D06C:FINISHING, DRESSING, TENTERING, OR STRETCHING TEXT....
- D06B:TREATING TEXTILE MATERIALS BY LIQUIDS, GASES, OR V....
- D21H:PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED....
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