This application relates to paper manufacturing, and in particular to a turn up process and apparatus in paper manufacturing.
The turn up process in paper manufacturing is the transfer of a paper web from a parent roll to a new roll in a paper making machine. PCT/CA2013/050056 filed 28 Jan. 2013 in the name of Paprima Industries, Inc. and published as WO2013/113110 on 8 Aug. 2013 describes a web turn-up cutting apparatus and method in which an X-shaped cut is performed using water knives that creates two wing portions.
In some circumstances, the wing portions can interfere with the turn up process or otherwise require special operator attention for disposal.
Applicant has discovered that a paper web can be cut with multiple points turning up. This has the advantage of providing better symmetry of feed of web material at the start of the new roll, while providing a termination to the full reel that is less prone to flapping and/or breaking off of tail material.
Applicant has discovered that a V-shaped or a Y-shaped cut can be used to cause the turn up onto the new roll to happen from both sides of the web without leaving any portion of the web cut away to require disposal, while providing a symmetric feed of web material at the start of the new roll. The V-shape at the same time is formed on the severed end of the completed full roll, which, being approximately symmetrical, is more stable and less prone to loosening or shifting, or tearing off, and therefore is beneficial to the production process.
A paper-making machine and process, in which a paper web passes over a pope roller to a main roll and a new roll can be brought into contact with the pope roller when the main roll becomes a full roll, can be improved by arranging at least two paper cutting tools to cut a paper web from each of two outer lateral edges to form two or more leader portions. A tail of the paper web formed on the full roll is symmetric and the leader portions on the new roll are also symmetric. Adhesive spray or tape can be applied to the paper web in the area of the leader portions. Air jets can also be used to bias the leader portions towards a surface of the new roll.
In some embodiments, there is provided a method for manufacturing paper in a paper-making machine, the method comprising feeding a continuous paper web toward a full roll, using a cutting tool, preferably a water jet cutting tool arranged to cut the paper web on a roll at two or more points, to cause the web to turn up onto a new roll with two or more leader portions, wherein the tail of the web formed on the full roll is symmetric and the leader portions on the new roll are also symmetric, and the full roll is decelerated and removed from the paper making machine.
In some embodiments, there is provided a method for manufacturing paper in a paper-making machine, the method comprising feeding a continuous paper web toward a full roll, using a cutting tool to cause the continuous paper web to turn up onto a new roll with two or more leader portions, decelerating the full roll; and removing the full roll from the paper making machine. In this way, a tail of the web formed on the full roll is symmetric and the leader portions on the new roll are also symmetric.
Preferably, the cutting tool used is a water jet cutting tool arranged to cut the paper web on a roll at two or more points.
Preferably, an adhesive is applied in an area corresponding to the two or more leader portions to help the paper web adhere to the new roll. Preferably, the adhesive is applied to the web, and can be applied using a spray or using a tape.
Preferably, the cutting tool is a water jet cutting tool arranged to cut the paper web on the new roll at two or more points, and the adhesive is provided by residual water on the new roll.
Preferably, the method further comprises providing a plurality of air jets to bias the two or more leader portions towards a surface of the new roll.
Preferably, the two or more leader portions comprise two leader portions, the cutting tool comprising two knifes performing cuts beginning from outer lateral edges of the paper web and joining near a midpoint of the paper web.
Preferably, the two or more leader portions comprise three leader portions, the cutting tool comprising two knifes performing cuts beginning from outer lateral edges of the paper web and the cuts meet, or cross over at least once near the midpoint of the paper web forming two leader portions at the outer lateral edges followed by a leader portion at the midpoint. The cuts may cross over twice near the midpoint.
In some embodiments, there is provided a web turn-up apparatus for use in a paper-making machine in which a paper web passes over a pope roller to a main roll and a new roll can be brought into contact with the pope roller when the main roll becomes a full roll. The apparatus may comprise at least two paper cutting tools arranged to cut a paper web from each of two outer lateral edges to form two or more leader portions. In this way, a tail of the paper web formed on the full roll is symmetric and the leader portions on the new roll are also symmetric.
Preferably, the apparatus further comprises an adhesive applicator.
Preferably, the cutting tools comprise water knife jets. Preferably, the water knife jets are arranged to cut the paper web on the new roll, wherein residual water on the new roll provides an adhesive for the two or more leader portions.
Preferably, the apparatus further comprises a plurality of air jet sources to bias the two or more leader portions towards a surface of the new roll.
The invention will be better understood by way of the following detailed description of embodiments of the invention with reference to the appended drawings, in which:
The following is a description of a process to turn up paper onto a new empty spool, in a machine which makes or converts paper, paperboard, or other type of webs. The particular features of this process are that the process of severing the sheet is initiated from outside the sheet, in order to generate a triangular shaped cut on the full roll, preferably with a water jet, preferably cutting on a roll surface, whereby the cuts join or cross, near the middle of the sheet, and whereby at least 2 points (or all downstream facing points) are adhered to and turned up on the new spool.
The method of severing the sheet from the outside will create an approximately symmetrical triangular shape on the severed end of the sheet going to the full roll. After the turn up, while the full roll is decelerating, such a shape will be less prone to loosening, flapping, or moving sideways, and therefore will be less prone tearing off bits of paper which can fly around and interfere with the production process.
For most paper types, water jet cutting is best done on a roll so that the severed portion is supported until the turn up. The roll on which the paper web is cut can be the pope roller and the reel drum against which the new roll is contacted, as illustrated in
Instead of or in addition to the use of adhesive, a plurality of air jet nozzles or sources can be provided as illustrated in
A corresponding inverted triangular shape will then be created on part of the sheet which will be turned up on the new spool, as shown in
There are various profile possibilities. For example, in
The cuts are initiated from outside the sheet, and join, at or near the middle of the sheet. It is advantageous to reduce paper cutting loss by pressurizing the jet outside the sheet. The cutting stops preferably when both cuts meet, which reduces paper cutting loss. The cut can be stopped quickly by various methods not discussed here. The cut may also stop after the cuts meet.
Adhesive can be applied onto the sheet (directly or indirectly) close to each of the sheet edges, so that there is adhesive on at least the upstream extremity of any upstream side (leading edge) of the cut for the purpose of adhering the sheet to the new spool, and preferably additionally on the downstream side (trailing edge) of the cut, for the purpose of adhering the severed downstream part of the sheet to the full roll to assist in preventing the wound paper from loosening. The adhesive may be a sprayed liquid, or tape. If sprayed, the location of the adhesive applicator may be either up- or downstream of the cutting device. In the case of tape, the location of the applicator is preferably upstream of the cutting device, so that the tape will be severed along with the web.
Adhesive can additionally be applied onto the sheet (directly or indirectly) generally in the middle and in line with the point of the triangular shaped trailing edge, so that there is adhesive at least on the downstream side of the cut, for the purpose of adhering the triangular point to the full roll. This is advantageous to assist in preventing the wound full roll from loosening.
It will be appreciated that water can also act as an adhesive for the web to adhere to the desired roll. When water is used as the sprayed liquid, a separate nozzle can be used, or alternatively, the water cutting jet can also be used for applying water to act as the adhesive. This can be done by having the water knife arranged on the opposite side of the sheet as in
In addition to spraying a liquid or using a tape for adhesion purposes, it will be appreciated that air can be used to blow up the tip. This applies, for example, to configurations like the ones illustrated in
In the embodiment of
As shown in
In the embodiments of
It is possible to prevent a water knife jet from cutting or applying water to the paper web at the end of its cut by positioning an absorbing member or deflecting member in the final position path of the water knife.
In some embodiments, the water knife cutting tool can comprise a motorized mounting supporting two or more water knife nozzles with a processor (or other electronic hardware) based controller for controlling the motion of the nozzles, actuation of the water jets and optionally any adhesive supplying devices, as shown in
This application claims priority of U.S. provisional patent application 62/408,958 filed Oct. 17, 2016.
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/CA2017/051235 | 10/17/2017 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2018/072018 | 4/26/2018 | WO | A |
Number | Name | Date | Kind |
---|---|---|---|
4546930 | Rohde | Oct 1985 | A |
5014924 | Nowisch | May 1991 | A |
5314132 | Ando et al. | May 1994 | A |
5782426 | Kinnunen et al. | Jul 1998 | A |
6135000 | Caspar et al. | Oct 2000 | A |
6464161 | Kaipf | Oct 2002 | B1 |
6709549 | Berglund et al. | Mar 2004 | B2 |
6863238 | Kojo et al. | Mar 2005 | B1 |
6978816 | Byrne | Dec 2005 | B1 |
8628641 | Hilker | Jan 2014 | B2 |
20030025028 | Drefs et al. | Feb 2003 | A1 |
20110083795 | Kowalewski et al. | Apr 2011 | A1 |
20130192785 | Hilker | Aug 2013 | A1 |
20150007957 | Hilker | Jan 2015 | A1 |
Number | Date | Country |
---|---|---|
2227113 | Jul 1999 | CA |
2354303 | Jan 2003 | CA |
2395034 | Jan 2003 | CA |
2258533 | Apr 2005 | CA |
69620089 | Aug 2002 | DE |
10306908 | Sep 2004 | DE |
10309049 | Sep 2004 | DE |
10309049 | Sep 2004 | DE |
202004009144 | Sep 2004 | DE |
10343448 | Apr 2005 | DE |
0907600 | Apr 1999 | EP |
1026110 | Aug 2000 | EP |
1035054 | Sep 2000 | EP |
1035054 | Sep 2000 | EP |
0997417 | Oct 2003 | EP |
2100838 | Sep 2009 | EP |
9748632 | Dec 1997 | WO |
2004110910 | Dec 2004 | WO |
Entry |
---|
PCT/CA2017/051235 International Preliminary Report dated Apr. 23, 2019. |
PCT/CA2017/051235 International Search Report dated Jan. 15, 2018. |
PCT/CA2017/051235 Search Strategy dated Jan. 15, 2018. |
PGT/CA2017/051235 Written Opinion dated Jan. 15, 2018. |
EP 17862698.2 Supplement search report with written opinion dated Oct. 1, 2019. |
International application No. PCT/CA2013/050056 International Preliminary Report on Patentability Chapter I dated Aug. 5, 2014. |
International application No. PCT/CA2013/050056 International Search Report dated May 15, 2013. |
International application No. PCT/CA2013/050056 Search Strategy dated May 15, 2013. |
International application No. PCT/CA2013/050056 Written Opinion of the International Searching Authority dated May 15, 2013. |
Related U.S. Appl. No. 13/490,747 Office Action dated Jan. 24, 2013. |
European application No. 13744115.0 the extended European search report dated Dec. 9, 2016. |
Number | Date | Country | |
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20200039777 A1 | Feb 2020 | US |
Number | Date | Country | |
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62408958 | Oct 2016 | US |