公开(公告)号：EP1021729A4

公开(公告)日：2002-03-06

申请号：EP99922961

申请日：1999-05-11

申请人： HONEYWELL MEASUREX CORP

发明人： WATSON JOHN D ,  HAGART-ALEXANDER CLAUD ,  GOSS JOHN D ,  PRESTON JOHN G ,  HU HUNG-TZAW ,  DUDAS LASLO

IPC分类号： G01N27/02 ,  D21D1/00 ,  D21F1/08 ,  D21F1/66 ,  D21G9/00 ,  G01R27/26

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).

公开(公告)号：EP1073910A4

公开(公告)日：2002-07-17

申请号：EP99919813

申请日：1999-04-12

申请人： HONEYWELL MEASUREX CORP

发明人： GOSS JOHN D ,  CHASE LEE ,  WATSON JOHN D ,  HU HUNG-TZAW ,  HAGART-ALEXANDER CLAUD

IPC分类号： G01R27/22 ,  D06H3/00 ,  D21F3/02 ,  D21H23/08 ,  G01G9/00 ,  G01N27/02 ,  G01N27/04 ,  G01N27/22 ,  G01N33/34 ,  G01R27/26 ,  D21F1/66 ,  G01N27/00

CPC分类号： G01G9/00 ,  D21H23/08 ,  G01N33/343

摘要： System and method for producing paper that employ an apparatus for measuring electrical characteristics of a fibrous composition. The apparatus comprises a plurality of conductivity (or resistance) detectors (26) each comprising a sensor that is sensitive to the conductivity (or resistance) and the proximity of the material (e.g., fibrous composition) to the sensor. Measurements from the apparatus relate to the zeta potential of the fibrous materials in the composition. The zeta potential profiles corresponding optimized configurations of the sheetmaking process can be employed to monitor and control the process.