WO1998017564A1 - Method in winding of a web, in particular of a paper or board web - Google Patents

Method in winding of a web, in particular of a paper or board web Download PDF

Info

Publication number
WO1998017564A1
WO1998017564A1 PCT/FI1996/000558 FI9600558W WO9817564A1 WO 1998017564 A1 WO1998017564 A1 WO 1998017564A1 FI 9600558 W FI9600558 W FI 9600558W WO 9817564 A1 WO9817564 A1 WO 9817564A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
roll
material strip
spool
equivalent
Prior art date
Application number
PCT/FI1996/000558
Other languages
French (fr)
Inventor
Pekka Eronen
Original Assignee
Valmet Corporation
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
Priority to FI954715A priority Critical patent/FI97966C/en
Priority claimed from FI954715A external-priority patent/FI97966C/en
Application filed by Valmet Corporation filed Critical Valmet Corporation
Priority to US09/091,054 priority patent/US5950958A/en
Priority to DE69620252T priority patent/DE69620252T2/en
Priority to EP96934846A priority patent/EP0888241B1/en
Priority to CA002239185A priority patent/CA2239185C/en
Priority to AT96934846T priority patent/ATE215047T1/en
Priority to JP51899598A priority patent/JP3759172B2/en
Priority to PCT/FI1996/000558 priority patent/WO1998017564A1/en
Publication of WO1998017564A1 publication Critical patent/WO1998017564A1/en

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
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2238—The web roll being driven by a winding mechanism of the nip or tangential drive type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound web roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28—Attaching the leading end of the web to the replacement web-roll core or spindle
    • B65H19/286—Attaching the leading end of the web to the replacement web-roll core or spindle by applying adhesive to the web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/29—Securing the trailing end of the wound web to the web roll
    • 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
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting

Definitions

  • the invention concerns a method in winding of a web, in particular of a paper or board web, in which method the web is wound onto a roll spool or equivalent through a nip between a roll or equivalent and the roll spool or equivalent.
  • the machine reel produced in a paper machine is often slit into component webs in a slitter- winder, out of which component webs customer rolls or commercial rolls of desired width are formed.
  • a slitter- winder In the commercial rolls formed in the slitter- winder, automatic fixing of the cutting point, i.e. the tail end of the web, to the full roll after winding and the fixing of the initial end of the web to the new roll spool are to-day ever more important properties in further processing of the paper.
  • Ply separation of paper means that, while the paper is fixed by gluing onto the spool from one side, rigid paper and, especially, board grades tend to straighten themselves to their linear form present on the machine reel and are split starting from the end of the web, in which case the starting of winding can fail completely or a fold is formed on the bottom of the roll. It can also be difficult to find a correct degree of weakening of the web when paper grades of different strengths are run.
  • the object of the present invention is to provide a method in which the drawbacks of the prior-art solutions are not present and by whose means the ends of the web can be fixed automatically to the roll and to the spool, respectively, simply and reliably.
  • the method in accordance with the invention is mainly characterized in that, in the method, when the roll that is formed on the spool becomes complete, a material strip with one adhesive face is fixed to the web at its edges transverse to the running direction of the web to fixing points so that the edges of the material strip are placed on the web at the fixing points at a distance between said fixing points in the running direction of the web that is shorter than the length of the material strip in the running direction of the web.
  • a material strip with one adhesive face is fixed to the face of the web, the length of said material strip in the running direction of the web being larger than the distance between its fastening points, and the web is cut off at a suitable point between the fastening points. After this, the material strip with one adhesive face is cut off so that one of its parts fixes the final end of the web to the complete roll and the other part fixes the initial end of the web to a new roll spool or equivalent.
  • the slitter- winder is stopped for the roll change, and the material strip with one adhesive face, preferably a one-sided tape, is fixed to the face of the web from two zones separate from one another. After this, the web is cut off between the tape fixing points. Since the length of the tape in the running direction of the web is longer than the distance between the fastening points, "unused" tape remains between the ends of the cut-off web. A part of this tape is used for fixing the tail of the roll to the roll, and the rest is used for fixing the web onto the roll spool, respectively.
  • the material strip with one adhesive face preferably a one-sided tape
  • the tape has been weakened in advance at the point at which it is supposed to be split between the fastening of the roll tail and the fastening of the web onto the spool.
  • the fixing by means of the method of the invention is reliable, because it is carried out across the cut-off area, whereby the risk of ply separation is eliminated fully.
  • Figure 1 is a schematic illustration of the stage of the method of the invention in which the slitter-winder has been stopped for the purpose of cutting off the web and fixing the tape.
  • Figure 2 is a schematic illustration of the stage of the method of the invention in which the web is cut off.
  • Figure 3 is a schematic illustration of the stage of the method of the invention in which the web has been cut off and the tape has been fixed between the final portion and the initial portion of the web.
  • Figure 4A is a schematic illustration of an exemplifying embodiment of cutting off the tape and fixing the tape to the face of a full roll.
  • Figure 4B is a schematic illustration of a second exemplifying embodiment of cutting off the tape and fixing the tape to the face of a full roll.
  • Figure 5 is a schematic illustration of the stage in the method of the invention in which one part of the tape has fixed the final portion of the web to the face of the complete roll and the other part of the tape has fixed the initial portion of the web onto a new roll spool.
  • the web W is wound over a roll 11 or equivalent onto the roll spool 13, around which the roll 12 is formed.
  • the winding takes place through the nip N between the roll 11 and the paper roll 12.
  • the web W has been stopped between the upper and lower holding members 24,25 of the web W cutting and tape fixing equipment 23.
  • the tape or equivalent material strip with one adhesive face, to be fixed to the web W is denoted with the reference numeral 22, and the web W cutting blade with the reference numeral 21.
  • the length Y (Fig. 3) of the tape 22 is larger than the length X of the web portion that remains between the tape 22 fixing points 26,27, because the tape 22 has been bent into a curved or equivalent form.
  • the web is moved in the direction S, in which case the tape 22 is tightened between its fixing points and becomes straight, the adhesive face being placed as the bottom face viewed in the direction of the figure.
  • the nip is opened, i.e. the roll 12 shifted to a distance apart from the nip contact with the roll 11, and when the tape is between the roll 11 and the roll 12, it is cut off by means of the blade 31, the first part 22 A of the tape 22 being guided onto the roll face, and by means of the press member 32 it 22A is pressed into contact with the roll 21 face, whereby the final end of the web has been fixed.
  • the tape 22 has been provided, for example, with a weakening, in which case, when the web W is tightened, the tape 22 is cut off at the weakening.
  • the operations to be carried out after this are similar to those illustrated in Fig. 4A.

Landscapes

  • Replacement Of Web Rolls (AREA)

Abstract

A method in winding of a web, in particular of a paper or board web, in which method the web (W) is wound onto a roll spool (13) or equivalent through a nip (N) between a roll (11) or equivalent and the roll spool (13) or equivalent. In the method, when the roll (12) that is formed on the spool (13) becomes complete, a material strip (22) with one adhesive face is fixed to the web (W) at both edges in the running direction (S) of the web to fixing points (26, 27), the distance between said fixing points being substantially shorter than the length of the web (W) between the fixing points (26, 27).

Description

Method in winding of a web, in particular of a paper or board web
The invention concerns a method in winding of a web, in particular of a paper or board web, in which method the web is wound onto a roll spool or equivalent through a nip between a roll or equivalent and the roll spool or equivalent.
The machine reel produced in a paper machine is often slit into component webs in a slitter- winder, out of which component webs customer rolls or commercial rolls of desired width are formed. In the commercial rolls formed in the slitter- winder, automatic fixing of the cutting point, i.e. the tail end of the web, to the full roll after winding and the fixing of the initial end of the web to the new roll spool are to-day ever more important properties in further processing of the paper. This comes from the fact that, at present, ever fewer people work at the slitter- winder, and the roll changes, web threading, and other necessary operations require such a high proportion of the working time of said people that there is hardly time for manual fixing of the final ends / initial ends of the rolls by means of tape or equivalent. Moreover, rolls whose final ends have not been fixed produce difficulties on the conveyors. Likewise, it is a problem that a roll whose final end has not been fixed has time to become loose before packaging.
With respect to the prior art, reference is made to the FI Patent 91, 054, in which a method and a device are described for automatic cutting and winding of a product web. In said paper, a solution is also suggested for fixing the end of the web, in which solution the web is weakened and strips of adhesive material are provided at the forward side and at the rear side of the weakening area. However, one problem in this prior-art solution, in particular with thicker paper grades, is ply separation of the paper, i.e. the paper is separated from the roll or spool in spite of the adhesive fixing. Ply separation of paper means that, while the paper is fixed by gluing onto the spool from one side, rigid paper and, especially, board grades tend to straighten themselves to their linear form present on the machine reel and are split starting from the end of the web, in which case the starting of winding can fail completely or a fold is formed on the bottom of the roll. It can also be difficult to find a correct degree of weakening of the web when paper grades of different strengths are run.
The object of the present invention is to provide a method in which the drawbacks of the prior-art solutions are not present and by whose means the ends of the web can be fixed automatically to the roll and to the spool, respectively, simply and reliably.
It is a particular object of the invention to create a solution that is suitable for use in connection with a slitter-winder when the slitter-winder slows down and stops for roll change.
The method in accordance with the invention is mainly characterized in that, in the method, when the roll that is formed on the spool becomes complete, a material strip with one adhesive face is fixed to the web at its edges transverse to the running direction of the web to fixing points so that the edges of the material strip are placed on the web at the fixing points at a distance between said fixing points in the running direction of the web that is shorter than the length of the material strip in the running direction of the web.
According to the invention, a material strip with one adhesive face is fixed to the face of the web, the length of said material strip in the running direction of the web being larger than the distance between its fastening points, and the web is cut off at a suitable point between the fastening points. After this, the material strip with one adhesive face is cut off so that one of its parts fixes the final end of the web to the complete roll and the other part fixes the initial end of the web to a new roll spool or equivalent.
According to the invention, the slitter- winder is stopped for the roll change, and the material strip with one adhesive face, preferably a one-sided tape, is fixed to the face of the web from two zones separate from one another. After this, the web is cut off between the tape fixing points. Since the length of the tape in the running direction of the web is longer than the distance between the fastening points, "unused" tape remains between the ends of the cut-off web. A part of this tape is used for fixing the tail of the roll to the roll, and the rest is used for fixing the web onto the roll spool, respectively.
In an embodiment of the invention the tape has been weakened in advance at the point at which it is supposed to be split between the fastening of the roll tail and the fastening of the web onto the spool.
The fixing by means of the method of the invention is reliable, because it is carried out across the cut-off area, whereby the risk of ply separation is eliminated fully.
In the following, the invention will be described in more detail with reference to the figures in the accompanying drawing, the invention being, however, in no way supposed to be strictly confined to the details of said illustrations.
Figure 1 is a schematic illustration of the stage of the method of the invention in which the slitter-winder has been stopped for the purpose of cutting off the web and fixing the tape.
Figure 2 is a schematic illustration of the stage of the method of the invention in which the web is cut off.
Figure 3 is a schematic illustration of the stage of the method of the invention in which the web has been cut off and the tape has been fixed between the final portion and the initial portion of the web.
Figure 4A is a schematic illustration of an exemplifying embodiment of cutting off the tape and fixing the tape to the face of a full roll. Figure 4B is a schematic illustration of a second exemplifying embodiment of cutting off the tape and fixing the tape to the face of a full roll.
Figure 5 is a schematic illustration of the stage in the method of the invention in which one part of the tape has fixed the final portion of the web to the face of the complete roll and the other part of the tape has fixed the initial portion of the web onto a new roll spool.
According to Fig. 1, the web W is wound over a roll 11 or equivalent onto the roll spool 13, around which the roll 12 is formed. The winding takes place through the nip N between the roll 11 and the paper roll 12. In the situation as shown in Fig. 1, the web W has been stopped between the upper and lower holding members 24,25 of the web W cutting and tape fixing equipment 23. The tape or equivalent material strip with one adhesive face, to be fixed to the web W, is denoted with the reference numeral 22, and the web W cutting blade with the reference numeral 21. As comes out from Fig. 1, the length Y (Fig. 3) of the tape 22 is larger than the length X of the web portion that remains between the tape 22 fixing points 26,27, because the tape 22 has been bent into a curved or equivalent form.
As comes out from Fig. 2, after the ends of the tape 22 have been fixed at the points 26,27 to the web W face, the web 21 is cut off between the fastening points.
After this, as is shown in Fig. 3, the web is moved in the direction S, in which case the tape 22 is tightened between its fixing points and becomes straight, the adhesive face being placed as the bottom face viewed in the direction of the figure.
According to the exemplifying embodiment shown in Fig. 4A, in the next stage, when the tape approaches the nip N between the roll 11 and the roll 12, the nip is opened, i.e. the roll 12 shifted to a distance apart from the nip contact with the roll 11, and when the tape is between the roll 11 and the roll 12, it is cut off by means of the blade 31, the first part 22 A of the tape 22 being guided onto the roll face, and by means of the press member 32 it 22A is pressed into contact with the roll 21 face, whereby the final end of the web has been fixed.
In the exemplifying embodiment shown in Fig. 4B, the tape 22 has been provided, for example, with a weakening, in which case, when the web W is tightened, the tape 22 is cut off at the weakening. The operations to be carried out after this are similar to those illustrated in Fig. 4A.
As comes out from Fig. 5, after one part 22 A of the tape has fixed the final portion of the web W to the complete customer roll, the other part 22B of the tape 22 is fixed to a new roll spool 13B, and after this the winding of the web W is continued onto the new roll spool 13B through the nip N between the roll 11 and the spool 13B. After the roll formed on the spool 13B has reached the desired size, the steps of the method in accordance with the invention are carried out starting from Fig. 1.
Above, the invention has been described with reference to one preferred exemplifying embodiment only, the invention being, however, by no means supposed to be strictly confined to the details of said embodiment.
Many variations and modifications are possible within the scope of the inventive idea defined in the following patent claims.

Claims

Claims
1. A method in winding of a web, in particular of a paper or board web, in which method the web (W) is wound onto a roll spool (13) or equivalent through a nip (N) between a roll (11) or equivalent and the roll spool (13) or equivalent, characterized in that, in the method, when the roll (12) that is formed on the spool (13) becomes complete, a material strip (22) with one adhesive face is fixed to the web (W) at its edges transverse to the running direction (S) of the web (W) to fixing points (26,27) so that the edges of the material strip (22) are placed on the web (W) at the fixing points (26,27) at a distance (X) between said fixing points in the running direction (S) of the web (W) that is shorter than the length (Y) of the material strip (22) in the running direction (S) of the web (W).
2. A method as claimed in claim 1, characterized in that, in the method, the web (W) is cut off between the fixing points (26,27).
3. A method as claimed in claim 1 or 2, characterized in that, in the method, the material strip (22) with one adhesive face is cut off, and one part (22A) of the cutoff material strip (22), which part was fixed to the final portion of the web (W) passing onto the complete roll (12), fixes the final portion of the web (W) onto the face of the complete roll (12), and the other part (22B) of the material strip (22), which part was fixed to the initial end of the web (W), fixes the web (W) onto the new roll spool (13B) for the start of the winding of a new roll.
4. A method as claimed in claim 3, characterized in that, in the method, the material strip (22) is cut off by means of a blade (31) or equivalent.
5. A method as claimed in claim 3, characterized in that, in the method, the material strip (22) is provided with a weakened, preferably perforated, portion, from which the material strip (22) is cut off by tightening the web (W) and the material strip (22).
6. A method as claimed in any of the claims 1 to 5, characterized in that the part (22 A) that is fixed onto the face of the complete roll (12) is pressed into contact with the roll face by means of a press member (32) or equivalent.
PCT/FI1996/000558 1995-10-04 1996-10-22 Method in winding of a web, in particular of a paper or board web WO1998017564A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FI954715A FI97966C (en) 1995-10-04 1995-10-04 Method for winding a web, in particular a paper or board web
US09/091,054 US5950958A (en) 1995-10-04 1996-10-22 Method in winding of a web, in particular of a paper or board web
DE69620252T DE69620252T2 (en) 1996-10-22 1996-10-22 METHOD FOR REWINDING A RAIL, IN PARTICULAR A PAPER OR CARDBOARD RAIL
EP96934846A EP0888241B1 (en) 1996-10-22 1996-10-22 Method in winding of a web, in particular of a paper or board web
CA002239185A CA2239185C (en) 1995-10-04 1996-10-22 Method in winding of a web, in particular of a paper or board web
AT96934846T ATE215047T1 (en) 1996-10-22 1996-10-22 METHOD FOR WINDING A WEB, PARTICULARLY A PAPER OR CARDBOARD WEB
JP51899598A JP3759172B2 (en) 1996-10-22 1996-10-22 Winding method of web, especially paper web or paperboard web
PCT/FI1996/000558 WO1998017564A1 (en) 1995-10-04 1996-10-22 Method in winding of a web, in particular of a paper or board web

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI954715A FI97966C (en) 1995-10-04 1995-10-04 Method for winding a web, in particular a paper or board web
CA002239185A CA2239185C (en) 1995-10-04 1996-10-22 Method in winding of a web, in particular of a paper or board web
PCT/FI1996/000558 WO1998017564A1 (en) 1995-10-04 1996-10-22 Method in winding of a web, in particular of a paper or board web

Publications (1)

Publication Number Publication Date
WO1998017564A1 true WO1998017564A1 (en) 1998-04-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1996/000558 WO1998017564A1 (en) 1995-10-04 1996-10-22 Method in winding of a web, in particular of a paper or board web

Country Status (2)

Country Link
CA (1) CA2239185C (en)
WO (1) WO1998017564A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0945380A1 (en) * 1998-02-26 1999-09-29 Voith Sulzer Papiertechnik Patent GmbH Method for transferring a material web from a winding roll to a core and winding unit
US6199476B1 (en) 1998-04-06 2001-03-13 Voith Sulzer Papiertechnik Patent Gmbh Roll machine and process for operating the same
EP1084975A2 (en) * 1999-09-17 2001-03-21 Voith Paper Patent GmbH Method of and device for cutting off a running material web
WO2001038213A2 (en) * 1999-11-25 2001-05-31 Metso Paper, Inc. Method and device in reel change

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5092533A (en) * 1990-10-15 1992-03-03 Beloit Corporation Method for effecting a set change in a winder
DE4029180A1 (en) * 1990-09-14 1992-03-19 Jagenberg Ag METHOD AND DEVICE FOR CHANGING REELS
US5222679A (en) * 1990-02-07 1993-06-29 Jagenberg Aktiengesellschaft Method of and apparatus for automatic replacement of a fully wound roll by a new sleeve in a winding machine
EP0744365A2 (en) * 1995-05-26 1996-11-27 Voith Sulzer Papiermaschinen GmbH Method for changing the roll in a winding machine and winding machine for carrying out this method
FI97966B (en) * 1995-10-04 1996-12-13 Valmet Corp Method of rolling web, especially a paper or cardboard web

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5222679A (en) * 1990-02-07 1993-06-29 Jagenberg Aktiengesellschaft Method of and apparatus for automatic replacement of a fully wound roll by a new sleeve in a winding machine
DE4029180A1 (en) * 1990-09-14 1992-03-19 Jagenberg Ag METHOD AND DEVICE FOR CHANGING REELS
US5092533A (en) * 1990-10-15 1992-03-03 Beloit Corporation Method for effecting a set change in a winder
EP0744365A2 (en) * 1995-05-26 1996-11-27 Voith Sulzer Papiermaschinen GmbH Method for changing the roll in a winding machine and winding machine for carrying out this method
FI97966B (en) * 1995-10-04 1996-12-13 Valmet Corp Method of rolling web, especially a paper or cardboard web

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0945380A1 (en) * 1998-02-26 1999-09-29 Voith Sulzer Papiertechnik Patent GmbH Method for transferring a material web from a winding roll to a core and winding unit
US6086010A (en) * 1998-02-26 2000-07-11 Voith Sulzer Papiertechnik Patent Gmbh Process for transferring a material web from a winding roll to a winding sleeve and winding device
US6199476B1 (en) 1998-04-06 2001-03-13 Voith Sulzer Papiertechnik Patent Gmbh Roll machine and process for operating the same
EP1084975A2 (en) * 1999-09-17 2001-03-21 Voith Paper Patent GmbH Method of and device for cutting off a running material web
EP1084975A3 (en) * 1999-09-17 2002-04-17 Voith Paper Patent GmbH Method of and device for cutting off a running material web
WO2001038213A2 (en) * 1999-11-25 2001-05-31 Metso Paper, Inc. Method and device in reel change
WO2001038213A3 (en) * 1999-11-25 2001-11-22 Metso Paper Inc Method and device in reel change
US6863238B1 (en) 1999-11-25 2005-03-08 Teppo Kojo Method and device in reel change

Also Published As

Publication number Publication date
CA2239185A1 (en) 1998-04-30
CA2239185C (en) 2002-07-02

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