FR2444749A1 - PROCESS AND APPARATUS FOR THE UNIFORM DRYING OF A CONTINUOUS TABLE OF CELLULOSIC FIBERS - Google Patents

PROCESS AND APPARATUS FOR THE UNIFORM DRYING OF A CONTINUOUS TABLE OF CELLULOSIC FIBERS

Info

Publication number
FR2444749A1
FR2444749A1 FR7930677A FR7930677A FR2444749A1 FR 2444749 A1 FR2444749 A1 FR 2444749A1 FR 7930677 A FR7930677 A FR 7930677A FR 7930677 A FR7930677 A FR 7930677A FR 2444749 A1 FR2444749 A1 FR 2444749A1
Authority
FR
France
Prior art keywords
web
continuous
moisture content
cellulosic fibers
drying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7930677A
Other languages
French (fr)
Other versions
FR2444749B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midland Ross Corp
Original Assignee
Midland Ross Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Midland Ross Corp filed Critical Midland Ross Corp
Publication of FR2444749A1 publication Critical patent/FR2444749A1/en
Application granted granted Critical
Publication of FR2444749B1 publication Critical patent/FR2444749B1/fr
Granted legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/003—Indicating or regulating the moisture content of the layer
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders

Landscapes

  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

Procédé et appareil pour le séchage uniforme d'une nappe continue de matières fibreuses humides. La nappe 6 continue humide est séchée par passage à travers une section de pressage 7, puis à travers une section de séchage 8. La teneur en humidité de la nappe est contrôlée à l'aide de moyens 75 de contrôle disposés dans le sens transversal de la nappe, à l'extrémité sèche 76 de son parcours, lesdits moyens 75 détectant les bandes sèches dans lesquelles la teneur en humidité est inférieure à un niveau désiré. Des moyens 78 commandés par les moyens de contrôle 75 sont placés à l'extrémité humide du parcours de la nappe 6 pour ajouter de l'humidité à des zones choisies de la nappe pour corriger la teneur en humidité des bandes sèches détectées par les moyens de contrôle 75. Application au séchage de nappes continues de fibres cellulosiques pour la fabrication de produits papetiers tels que le papier ou le carton.A method and apparatus for uniform drying of a continuous web of moist fibrous materials. The continuous wet web 6 is dried by passing through a pressing section 7, then through a drying section 8. The moisture content of the web is controlled using control means 75 arranged in the transverse direction of the web. the web, at the dry end 76 of its path, said means 75 detecting dry bands in which the moisture content is below a desired level. Means 78 controlled by the control means 75 are placed at the wet end of the path of the web 6 to add moisture to selected areas of the web to correct the moisture content of the dry bands detected by the means of control 75. Application to the drying of continuous webs of cellulosic fibers for the manufacture of paper products such as paper or cardboard.

FR7930677A 1978-12-21 1979-12-14 PROCESS AND APPARATUS FOR THE UNIFORM DRYING OF A CONTINUOUS TABLE OF CELLULOSIC FIBERS Granted FR2444749A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US97185478A 1978-12-21 1978-12-21

Publications (2)

Publication Number Publication Date
FR2444749A1 true FR2444749A1 (en) 1980-07-18
FR2444749B1 FR2444749B1 (en) 1982-11-26

Family

ID=25518874

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7930677A Granted FR2444749A1 (en) 1978-12-21 1979-12-14 PROCESS AND APPARATUS FOR THE UNIFORM DRYING OF A CONTINUOUS TABLE OF CELLULOSIC FIBERS

Country Status (8)

Country Link
JP (1) JPS5593897A (en)
AU (1) AU5360779A (en)
BR (1) BR7908310A (en)
CA (1) CA1116844A (en)
FI (1) FI793920A (en)
FR (1) FR2444749A1 (en)
GB (1) GB2039014A (en)
SE (1) SE7910025L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PH25720A (en) * 1982-09-30 1991-09-18 Beloit Corp Method, apparatus for controlling the moisture profile of a paper web in paper-making machine
FI91900C (en) * 1990-12-17 1994-08-25 Valmet Paper Machinery Inc Process at the drying portion of a paper machine to reduce the curvature tendency and drying portion of the paper intended to carry out the procedure
DE19901400A1 (en) 1999-01-15 2000-07-20 Voith Sulzer Papiertech Patent Drying and smoothing unit for fibrous webs
DE19903581A1 (en) * 1999-01-29 2000-08-03 Voith Sulzer Papiertech Patent Paper web drying and polishing stations moistens the web surface by pressure forces at the end of or after the drying station before it passes through the roller press gaps of the calender to set the web moisture content
FI109213B (en) 2000-11-24 2002-06-14 Metso Paper Inc Method and apparatus for controlling the profile of the moisture content or coating amount of the paper web

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948721A (en) * 1974-09-03 1976-04-06 Winheim Karl H Method and apparatus for wetting the web in paper making machines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948721A (en) * 1974-09-03 1976-04-06 Winheim Karl H Method and apparatus for wetting the web in paper making machines

Also Published As

Publication number Publication date
JPS5593897A (en) 1980-07-16
FR2444749B1 (en) 1982-11-26
SE7910025L (en) 1980-06-22
FI793920A (en) 1980-06-22
GB2039014A (en) 1980-07-30
CA1116844A (en) 1982-01-26
AU5360779A (en) 1980-08-07
BR7908310A (en) 1980-07-22

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Legal Events

Date Code Title Description
ST Notification of lapse