Keitaanniemi et al., 1987 - Google Patents
Retention measurement in paper machines and its control using retention aid flowrateKeitaanniemi et al., 1987
- Document ID
- 15784167368183880090
- Author
- Keitaanniemi O
- Kujansivu T
- Kaunonen A
- Publication year
- Publication venue
- IFAC Proceedings Volumes
External Links
Snippet
Increasing production rate demands, increasing ash content of paper, and decreasing paper grammage have all emphasized the need to ensure the stability of the paper machine's wet end. These trends have also made the measurement and control of retention more …
- 230000014759 maintenance of location 0 title abstract description 122
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0009—Paper-making control systems
- D21G9/0027—Paper-making control systems controlling the forming section
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by the preceding groups
- G01N33/34—Investigating or analysing materials by specific methods not covered by the preceding groups paper
- G01N33/346—Investigating or analysing materials by specific methods not covered by the preceding groups paper paper sheets
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/02—Head boxes of Fourdrinier machines
- D21F1/028—Details of the nozzle section
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