JP3759172B2 - Winding method of web, especially paper web or paperboard web - Google Patents

Description

The present invention relates to a method for winding a web, in particular a paper web or a paperboard web, in which the web is passed through a nip between the roll or equivalent and the roll spool or equivalent, and the web is rolled into the roll spool. Take up around.
Often machine reels made by paper machines are cut into component webs by a slitter winder. Create customer rolls or commercial rolls from component webs. In commercial rolls made by a slitter winder, after winding, to cut the paper, the end of the web is automatically fixed to the finished roll for further processing, and the start of the web is the new roll. Fixing to the spool is now increasingly important. This is due to the following facts. To spend a significant portion of the work time of these personnel on slitter winders, roll changes, web threading, and other necessary operations with less personnel than ever before, use tape or equivalent to There is almost no time to manually fix the end or start. Furthermore, rolls that are not fixed at the end cause problems on the conveyor. Furthermore, rolls that are not fixed at the end have the opportunity to come loose before being packaged.
Regarding the prior art, reference is made to Finnish Patent No. 91054, which describes a method and apparatus for automatically cutting and winding up a manufactured web. This patent also proposes a method of fixing the end of the web. In this method, the web is weakened, and an elongated adhesive material is applied to the front and back sides of the weakened portion. However, this prior art method has the problem of delamination, especially for thick paper grades. That is, the paper peels off from the roll or spool despite being fixed with the adhesive. The delamination of the paper means that even though the paper is glued to the spool from one side, the hard paper, especially the paperboard grade paper, is straightened and straightened on the machine reel, It means to tear from the end of the web. In this case, the winding fails completely or it can be folded back to the bottom of the roll. It is also difficult to find exactly how weak the web is when running different grades of paper.
The object of the present invention is a method free from the disadvantages of the methods according to the prior art, whereby the end of the web can be fixed easily, reliably and automatically on the roll and spool respectively. Is to provide a method.
In particular, it is an object of the present invention to create a method that is suitable for use with a slitter winder when the slitter winder slows down and stops due to roll changes.
The method according to the present invention has the following main features. That is, when the roll formed on the spool is completed, both ends of the elongated material web having one adhesive surface in the direction crossing the running direction are fixed to the fixing points of the web. At this time, both ends of the elongated material are positioned at the fixed points on the web so that the distance between the two fixed points in the running direction of the web is shorter than the length of the elongated material in the running direction of the web.
According to the present invention, the elongated material having one adhesive surface is fixed to the surface of the web, and the length of the elongated material in the running direction of the web is greater than the distance between the fixing points. The web is then cut at an appropriate point between the fixed points. This is followed by cutting an elongated material with one adhesive surface, one piece securing the end of the web to the finished roll, and the other piece attaching the starting end of the web to a new roll spool or equivalent. Secure to.
According to the present invention, the slitter winder is stopped for roll change and an elongated material having one adhesive surface, preferably a single-sided tape, is secured to two areas of the web surface that are separated from each other. After this, the web is cut between the fixed points of the tape. Since the length of the tape in the direction of web travel is longer than the distance between the fixed points, the “unused” tape is between the ends of the cut web. A portion of this tape is used to secure the end portion of the roll to the roll, and the remaining portion is used to secure the web to the roll spool.
In one embodiment of the invention, the tape is weakened beforehand in that it is scheduled to cut between fixing the end of the roll and fixing the web to the spool.
The fixing by the method of the present invention is reliable. This is because the fixing takes place beyond the cutting area, thus sufficiently eliminating the risk of delamination.
In the following, the present invention will be described in detail with reference to the figures shown in the accompanying drawings, but the present invention is not completely limited to these detailed drawings.
FIG. 1 is a schematic view of a stage in the method of the present invention in which the slitter winder is stopped for cutting the web and fixing the tape.
FIG. 2 is a schematic view of the step of cutting the web among the steps in the method of the present invention.
FIG. 3 is a schematic view of a stage in the method of the present invention in which the web is cut and the tape is fixed between the end portion and the start portion of the web.
FIG. 4A is a schematic view of an embodiment in which a tape is cut and the tape is fixed to the surface of a completed roll.
FIG. 4B is a schematic view of a second embodiment in which the tape is cut and fixed to the surface of the completed roll.
FIG. 5 shows a step in the method of the invention in which one piece of tape secures the end of the web to the surface of the finished roll and the other piece of tape places the start of the web on a new roll spool. It is the schematic of the step which fixes.
According to FIG. 1, the web W passes over a roll 11 or equivalent and is wound on a roll spool 13 to form a roll 12 around the roll spool 13. Winding is performed through a nip N between the roll 11 and the paper roll 12. In the situation of FIG. 1, the web W is stopped between the upper and lower holding members 24, 25 of the web W cutting and tape fixing device 23. A tape to be fixed to the web W or an elongated material having one adhesive surface is indicated by reference numeral 22, and a web W cutting blade is indicated by reference numeral 21. As can be seen from FIG. 1, since the tape 22 is bent into a curved or equivalent shape, the length Y of the tape 22 (FIG. 3) is the web portion between the fixing points 26 and 27 of the tape 22. Longer than the length of.
As can be seen from FIG. 2, after fixing the end of the tape 22 to the surface of the web W at points 26 and 27, the web 21 is cut between the fixing points.
As shown in FIG. 3, thereafter, the web moves in the S direction, and as a result, the tape 22 is stretched straight between the fixing points. The bonding surface is positioned such that its lower surface faces the direction of the drawing.
According to the 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 opens, ie the roll 12 leaves the nip contact with the roll 11. . Then, when the tape is between the roll 11 and the roll 12, the tape is cut using the blade 31, the first piece 22A of the tape 22 is guided on the surface of the roll, and the pressing member 32 Press against the surface of the roll 21. In this way, the end of the web is fixed.
In the embodiment shown in FIG. 4B, a weakened portion is provided on the tape 22 as an example. As a result, when the web W is tensioned, the tape 22 is cut at a weakened position. Thereafter, the operation to be performed is the same as that shown in FIG. 4A.
As can be seen from FIG. 5, after one piece of tape 22A secures the end of the web W to the completed customer roll, the other piece 22B of tape 22 is secured to a new roll spool 13B. Thereafter, the web W is continuously wound 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 a predetermined size, the steps of the method according to the invention are carried out starting from FIG.
Although the invention has been described with reference to only one preferred embodiment, the invention is not limited to the details shown in this embodiment.
Many variations and modifications are possible within the scope of the invention as defined by the following claims.

Claims (4)

And roles, through the web to the nip located between the roll spool, winding the web on said roll spool, the winding method of the upper parts, the method comprising,
When the roll formed on the roll spool is completed, before cutting the web, both ends of the elongate material having one adhesive surface in a direction crossing the running direction of the web are used as fixing points of the web. Fixed,
At this time, both ends of the elongated material are positioned at the fixed points on the web so that the distance between the two fixed points in the running direction of the web is shorter than the length of the elongated material in the running direction of the web. the way,
Cutting the web between the fixed points;
Cutting the elongated material having the one adhesive surface and securing one piece of the cut elongated material to the end of the web on the finished roll, the piece being the end of the web To the surface of the finished roll,
Fixing the other fragments of the elongate material to the beginning end of said web, said fragment, in order to start the winding of a new roll, of the upper blanking, characterized in that for securing the web on the new roll spool Winding method. The winding method according to claim 1, said elongated material, weather blanking winding method characterized by cutting with a blade. The winding method according to claim 1, wherein the elongated material, the weakened part component is provided, by tensioning said web said elongated material pins and, to cut the elongated material in said partial the take-up method of the upper blanking characterized. The winding method according to any one of claim 1, wherein up to the third term, the fragment of the elongated material to be fixed to the surface of the finished roll, and the completed pressed using a pressing member weather-Bed winding method characterized by contacting the surface of the roll.

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