EP1236666B1 - Méthode et dispositif pour le traitement d'une bande - Google Patents

Méthode et dispositif pour le traitement d'une bande Download PDF

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Publication number
EP1236666B1
EP1236666B1 EP20020003782 EP02003782A EP1236666B1 EP 1236666 B1 EP1236666 B1 EP 1236666B1 EP 20020003782 EP20020003782 EP 20020003782 EP 02003782 A EP02003782 A EP 02003782A EP 1236666 B1 EP1236666 B1 EP 1236666B1
Authority
EP
European Patent Office
Prior art keywords
paper web
moisture
winding
time period
reel
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.)
Expired - Lifetime
Application number
EP20020003782
Other languages
German (de)
English (en)
Other versions
EP1236666A2 (fr
EP1236666A3 (fr
Inventor
Rüdiger Dr. Kurtz
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 EP1236666A2 publication Critical patent/EP1236666A2/fr
Publication of EP1236666A3 publication Critical patent/EP1236666A3/fr
Application granted granted Critical
Publication of EP1236666B1 publication Critical patent/EP1236666B1/fr
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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
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/514—Modifying physical properties
    • B65H2301/5142—Moistening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/11—Length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/14—Diameter, e.g. of roll or package

Definitions

  • the invention relates to a method for treating a paper web, wherein first applies moisture to the paper web and then the paper web wound on a winding, wherein after winding a certain length of the paper web makes a roll change. Furthermore, the invention relates to an apparatus for treating a paper web with a moistener, a winding device and a winding change device.
  • the production of a paper web is often not consistently in a train. Rather, the Paper web wound after passing through one or more manufacturing or processing stations. As winding cores so-called reels are often used here.
  • the paper web roll wound up on a spool or another winding core can then be temporarily stored before it is fed to a further processing station, for example a calender.
  • the invention is therefore based on the object to reduce the risk of web breaks.
  • This object is achieved in a method of the type mentioned above, that in a period of time, which extends before and after the reel change, the applied moisture is reduced.
  • the period is adjusted to an average storage time.
  • an average storage time one takes into account the circumstance that, on the one hand, a greater drying out of the outer layers of the roll can be observed for a longer storage time, but on the other hand the moisture in the interior of the roll migrates again to the inner layers, which are wound directly onto the spool. If you can therefore foresee that the role over a longer storage time must be stored, then you just need to wrap more "dry" layers on the spool or core and thus extend the period, at least the proportion of the period after Wikkel Touch, accordingly.
  • the proportion of the period after the roll change must be selected to be correspondingly longer than with a high-speed paper web.
  • the number of "dry" Layers that are wound onto the winding core must be so large that at least the innermost layer has not yet experienced a significant increase in moisture after the predetermined storage time. However, it is sufficient if it is still so dry that it has substantially the same width as the beginning of a new roll. This can be found relatively easily by a few tests for each type of paper.
  • the proportion of the period before the winding change is shorter than the share after the roll change.
  • the proportion of the period before the roll change defines the number of outer layers of the roll that are drier than the rest of the paper web.
  • the outer layers dry up under the influence of the environment anyway faster than the inner layers. Attention will therefore be paid to the fact that the inner layers are wound with a sufficient number of "dry" paper webs. Theoretically, the moistening could be continued until immediately after the reel change. In this embodiment, however, one would have to rely on the fact that the outer layers of the paper web actually dry out to a value which corresponds to the value of the inner, dry layers of the paper web. If, on the other hand, you do not moisturize one or more outer layers, you are no longer dependent on drying out through the environment.
  • the object is also achieved by a device of the type mentioned above, and in that the winding change device cooperates with the moisture and reduces its moisture release in a period before and after a winding change.
  • the winding changing device shuts off the moisture in the period. As stated above, this achieves the conditions defined for the inner and outer layers.
  • the application of moisture can take place in different ways, for example by steam or by sprayed-on water.
  • Deflection rollers 5 and 6 are provided to keep the paper web 1 at a defined distance to the moistener 3.
  • the paper web 1 is wound after passing through the moisturizer to a winding roll 7.
  • a hub serves a spool 8, which is held in a holder, not shown, and can be removed horizontally from this holder when a new spool 9, which is shown in dashed lines in a waiting position above the winding roller 7, to be used vertically in the attitude.
  • the directions are only examples.
  • the withdrawn from the drying cylinder 2 paper web has in a range I a humidity of, for example, 94 to 98% TG, d. H. it contains only 2 to 6% water.
  • the paper web 1 After passing through the humidifier 3, the paper web 1 in a region II a moisture content of about 89 to 90% TG, d. H. it contains about 10 to 11% water.
  • Such a moisture increase of about 98 to about 89% TG is required, for example, in the case of SC-A papers before calendering, in order to achieve the required final moisture content of at least 94 to 96% TG during calendering despite a high moisture loss.
  • the new spool 9 can be exchanged with the aid of a winding changing device against the old spool 8 and the winding roll 7 located thereon.
  • a holding arm 10 is shown, which can be lowered by means of a drive 11 in the position of the old spool 8.
  • a switch 12 is arranged, which can be actuated by the movement of the support arm 10.
  • the switch 12 is connected via a signal line 13 to a control device 14, which contains a dead time element 15.
  • the control device 14 is in turn connected to the moistener 3.
  • the switch 12 is actuated by the support arm 10 at Tambour Caus, then sets the control device 14, the humidity 3 for a period of time, which is determined by the deadtime member 15, out of function.
  • the moistener 3 thus no longer applies moisture 4 to the paper web 1. Since the switch 12 is operated before the roll or Tambour grill, this results in the situation that a portion of the paper web 1, which is wound directly on the spool 8, and a portion of the paper web 1, which forms the outer layers of the winding roll 7 , having a greatly reduced humidity.
  • the moisture corresponds to that at the outlet of the paper machine, ie behind the drying cylinder 2.
  • the inner layers 16 and the outer layers 17 are shown hatched, while the middle layers 18, which have the desired moisture, are shown unshaded.
  • the inner layers 16 and the outer layers 17 are shown with an exaggerated thickness to improve the clarity.
  • the outer layers 17 in particular are only a few layers of the paper web 1.
  • the expected storage time can be included in the number of layers. Even if the inner layers 16 are dry, takes place at a longer storage, a moisture balance in the interior of the winding roll 7, which causes moisture also penetrates to the paper layer, which rests directly on the spool 8 or adjacent to this position. So if a longer storage time of the winding roll 7 is to be expected, then it will be correspondingly more dry layers 16 aufkrümmeln on the spool.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)

Claims (7)

  1. Procédé pour traiter une bande de papier, dans lequel on applique d'abord de l'humidité sur la bande de papier puis la bande de papier est ensuite enroulée sur une bobine et après l'enroulement, d'une certaine longueur de la bande de papier, on effectue un changement de bobine, caractérisé en ce que dans un intervalle de temps qui s'étend avant et après le changement de bobine, l'humidité appliquée diminue.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on n'applique pas d'humidité dans l'intervalle de temps.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'on ajuste l'intervalle de temps à un temps de stockage moyen.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'on ajuste la longueur de la proportion de l'intervalle de temps après le changement de bobine à la vitesse de la bande de papier et à la longueur périphérique d'un mandrin de bobinage de telle sorte que la bande de papier soit enroulée avec une humidité réduite avec un nombre prédéterminé de couches sur le mandrin de bobinage.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la proportion de l'intervalle de temps dans laquelle on n'effectue pas d'humidification est plus courte avant le changement de bobine que la proportion après le changement de bobine.
  6. Dispositif pour traiter une bande de papier avec un humidificateur, un dispositif d'enroulement et un dispositif de changement de bobine, caractérisé en ce que le dispositif de changement de bobine (10) coopère avec l'humidificateur (3) et réduit sa diffusion d'humidité dans un intervalle de temps avant et après un changement de bobine.
  7. Dispositif selon la revendication 6, caractérisé en ce que le dispositif de changement de bobine (10) arrête le fonctionnement de l'humidificateur (3) dans l'intervalle de temps.
EP20020003782 2001-03-03 2002-02-20 Méthode et dispositif pour le traitement d'une bande Expired - Lifetime EP1236666B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001110309 DE10110309C2 (de) 2001-03-03 2001-03-03 Verfahren und Vorrichtung zum Behandeln einer Papierbahn
DE10110309 2001-03-03

Publications (3)

Publication Number Publication Date
EP1236666A2 EP1236666A2 (fr) 2002-09-04
EP1236666A3 EP1236666A3 (fr) 2004-01-21
EP1236666B1 true EP1236666B1 (fr) 2007-04-04

Family

ID=7676217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020003782 Expired - Lifetime EP1236666B1 (fr) 2001-03-03 2002-02-20 Méthode et dispositif pour le traitement d'une bande

Country Status (2)

Country Link
EP (1) EP1236666B1 (fr)
DE (2) DE10110309C2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10157693C5 (de) * 2001-11-24 2012-04-26 Voith Patent Gmbh Vorrichtung und Verfahren zum Aufwickeln einer Papier- oder Kartonbahn
DE102004020069C5 (de) * 2004-04-24 2013-12-05 Voith Patent Gmbh Verfahren zum Satinieren einer Papierbahn

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1011721B (de) * 1952-10-24 1957-07-04 Jagenberg Werke Ag Vorrichtung zum Feuchten laufender Bahnen aus Papier od. dgl.
GB775300A (en) * 1954-01-27 1957-05-22 Smyth Horne Ltd Paper moistening device for paper making machines
DE1293565B (de) * 1964-12-11 1969-04-24 Wiessner Ges Fuer Raumluftgest Vorrichtung zum Konditionieren von Papierbahnen
SE309904B (fr) * 1965-11-23 1969-04-08 Svenska Flaektfabriken Ab
US4207143A (en) * 1976-10-13 1980-06-10 Westvaco Corporation Method for adding moisture to a traveling web
US5065673A (en) * 1989-09-19 1991-11-19 Measurex Corporation Cross-directional moisture control system and method

Also Published As

Publication number Publication date
EP1236666A2 (fr) 2002-09-04
DE50209851D1 (de) 2007-05-16
DE10110309A1 (de) 2002-09-19
EP1236666A3 (fr) 2004-01-21
DE10110309C2 (de) 2003-01-16

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