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公开(公告)号：EP1021729A4
公开(公告)日：2002-03-06
申请号：EP99922961
申请日：1999-05-11
发明人： WATSON JOHN D , HAGART-ALEXANDER CLAUD , GOSS JOHN D , PRESTON JOHN G , HU HUNG-TZAW , DUDAS LASLO
CPC分类号： D21G9/0027 , D21D1/002 , D21F1/08 , Y10S162/06
摘要： System and method for producing paper are provided. The system controls formation of wet stock comprising fibers on a moving water permeable wire (7) of a de-watering machine that has means for supplying the amount of pulp from at least one source, means for adding an amount of non-fibrous additives to the wet stock, a refiner (20) that is subject to a variable load and a headbox (1) having at least one slice (11), wherein each slice (11) has an aperture through which wet stock is discharged onto the wire (7).
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公开(公告)号：EP1084473A4
公开(公告)日：2005-05-25
申请号：EP99927309
申请日：1999-06-07
CPC分类号： D21G9/0027
摘要： The system controls formation of wet stock (55) comprising fibers on a moving water permeable wire (13) of a de-watering machine that has a refiner (135) that is subject to a variable load and a headbox (10) having at least one slice (50), wherein each slice (50) has an aperture through which wet stock (55) is discharged at a stock jet speed onto the wire (13) that is moving at a wire (13) speed. A sheet of wet stock (55) moving a speed develops on the wire (13). The system includes: a) at least two water weight sensors (42A-42E) that are positioned adjacent to the wire wherein the at least two sensors (42A-42E) are positioned at different locations in the direction of movement of the wire (13) and upstream from a dry line (43) which develops during operation of the machine and the sensors (42A-42E) generate signals indicative of a water weight profile made up of a multiplicity of water weight measurements; and b) adjustability of at least one of the stock jet speed, sheet speed, wire speed, or refiner load to cause the water weight profile to match a preselected or optimal water weight profile.
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