DE502004010988D1 - Web guiding means - Google Patents

Web guiding means

Info

Publication number
DE502004010988D1
DE502004010988D1 DE502004010988T DE502004010988T DE502004010988D1 DE 502004010988 D1 DE502004010988 D1 DE 502004010988D1 DE 502004010988 T DE502004010988 T DE 502004010988T DE 502004010988 T DE502004010988 T DE 502004010988T DE 502004010988 D1 DE502004010988 D1 DE 502004010988D1
Authority
DE
Germany
Prior art keywords
rod
air
web
guide
airturn
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.)
Active
Application number
DE502004010988T
Other languages
German (de)
Inventor
Roland Mayer
Peter Kahl
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of DE502004010988D1 publication Critical patent/DE502004010988D1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/32—Arrangements for turning or reversing webs
    • 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
    • D21F1/36—Guiding mechanisms
    • D21F1/40—Rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B65H2406/111—Means using fluid made only for exhausting gaseous medium producing fluidised bed for handling material along a curved path, e.g. fluidised turning bar
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B65H2406/113—Details of the part distributing the air cushion
    • B65H2406/1131—Porous material

Abstract

A papermaking assembly has an airturn guide rod (10) emitting compressed air through its porous surface to form an air cushion between the rod and a wet moving paper or carton web (28). The web moves over the airturn guide with a sieve belt (40). The airturn rod guide is located after a machine press, press arrangement or press section, and/or prior to an air drier e.g. an impingement drier. The rod-shaped guide has an outer air-porous surface (12) supported by an air-porous tubular supporting rod (24) with an internal feed of compressed air. Separation between the web and rod is maintained by an air cushion. The air pressure is maintained above 1 bar in the pressure chamber. The specific volume flow in the porous material is in the range 10 to 5000 Nm/h m. The intervals between adjacent pores is less than 1 mm. The average pore diameter is less than 0.1 mm. The drop in pressure between the pressure chamber and pore outer surface is greater than 0.8 bar. The air cushion between the pore outer surface and moving web is less than 3 mm. The rod rotates about its longitudinal axis. The rod diameter is 500 to 1500 mm.
DE502004010988T 2003-05-19 2004-05-11 Web guiding means Active DE502004010988D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10322515A DE10322515A1 (en) 2003-05-19 2003-05-19 Web guiding means

Publications (1)

Publication Number Publication Date
DE502004010988D1 true DE502004010988D1 (en) 2010-05-20

Family

ID=33039201

Family Applications (2)

Application Number Title Priority Date Filing Date
DE10322515A Withdrawn DE10322515A1 (en) 2003-05-19 2003-05-19 Web guiding means
DE502004010988T Active DE502004010988D1 (en) 2003-05-19 2004-05-11 Web guiding means

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE10322515A Withdrawn DE10322515A1 (en) 2003-05-19 2003-05-19 Web guiding means

Country Status (3)

Country Link
EP (1) EP1479818B1 (en)
AT (1) ATE463615T1 (en)
DE (2) DE10322515A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322519A1 (en) * 2003-05-19 2004-12-09 Voith Paper Patent Gmbh Web guiding means

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1654962A (en) * 1924-06-12 1928-01-03 Austin E Cofrin Paper-making machine
GB1218801A (en) * 1967-05-12 1971-01-13 Masson Scott Thrissell Eng Ltd Improvements in web guide members
EP0705785A3 (en) * 1994-10-07 1996-11-13 Eastman Kodak Co Method and apparatus for preventing creases in thin webs
DE19605904A1 (en) * 1995-02-23 1996-08-29 Basf Magnetics Gmbh High speed foil web etc. guide roller
DE19651191A1 (en) 1996-12-10 1998-06-18 Voith Sulzer Papiermasch Gmbh Papermaking machine drying section
FI104001B1 (en) * 1998-06-26 1999-10-29 Valmet Corp drying Lot
DE19902936A1 (en) * 1998-12-23 2000-06-29 Bachofen & Meier Ag Buelach Device for contactless guiding or treatment of a running material web, in particular a paper or cardboard web, metal or plastic film

Also Published As

Publication number Publication date
EP1479818A1 (en) 2004-11-24
DE10322515A1 (en) 2004-12-09
EP1479818B1 (en) 2010-04-07
ATE463615T1 (en) 2010-04-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition