JP2003192198A - Preparation processing structure for paper connection of web roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily perform preparation processing and perform paper connection smoothly concerning the preparation processing for paper connection. <P>SOLUTION: A preparation processing structure for connecting a web tip part of a new web roll 1 with an old web roll is provided with a sheet member 21 joined with the web tip part 1a through a first join layer 22, a join member 30 for joining a rear surface of the sheet member 21 with a web surface of a lower layer of the web tip part 1a, and a bonding layer 23 for paper connection adhered to a surface of the sheet member 21 to join a web of the old web roll. The join member 30 is provided with an intermediate layer 31 whose rupture strength is lower than any of rupture strength of the web and each peeling strength of the bonding layer for paper connection, the first join layer, a second join layer, and a third join layer. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tailoring structure for splicing web rolls in a printing machine or the like.

[0002]

2. Description of the Related Art In recent years, in a printing factory that prints a large number of copies, continuous operation is performed by automatically connecting (paper splicing) a large number of web rolls (paper webs) by a high-speed rotary press to improve the operating rate. I try to raise it. In this way, in order to splice the web roll, it is necessary to tailor the web front end portion (also referred to as the start end portion) of the web roll.

FIG. 6 is a perspective view showing a tailored web roll, and FIG. 7 is a view showing a web tip portion of the tailored web roll. As shown in FIGS. The web front end portion 1a is formed in a substantially V shape with the center in the width direction as a head. In such a web front end portion 1a, a paper splicing adhesive tape 41, 42a, 42b for joining to a preceding web roll is provided at the widthwise center end and both side edges extending from this end in a substantially V shape. Is attached, and a tip tab (T tab) 44 is attached to the V-shaped tip in order to temporarily fix the web tip portion 1a to the lower web.

Although not shown, the tailoring process of such a web roll is performed as follows. That is, while advancing the web front end 1a of the web roll 1 after removal of the skin portion onto the tailoring table, the paper joining adhesive tape (front end tape) 41 is adhered to the central portion of the web front end 1a, and then the side tape applying device. And the paper joining adhesive tapes (left and right side tapes) 42a and 42b are attached to the surfaces of both side portions of the web front end portion 1a in a substantially V shape. further,
While the web roll 1 is being fed back, the web front end portion 1a is cut along the paper joining adhesive tapes 42a and 42b.
Then, the front end portion 1a of the web roll 1 left on the front side of the paper joining adhesive tape 41 is cut along the paper joining adhesive tape 41 in the lateral width direction (axial direction) of the web roll 1.

Next, the front end tab 44 is inserted into the back surface of the web front end portion 1a of the web roll 1 (back surface on the side of the adhesive tape 41 for paper splicing), one end portion of the front end tab 44 is attached thereto, and then the web front end portion. Take up the 1a side to the roll side,
The other end of the tip tab 44 is attached to the surface of the lower web of the web roll 1 (roller side outer peripheral surface), and a series of tailoring processing is completed (see FIG. 7B).

When the web roll 1 thus finished with the tailoring process is mounted on the printing machine and the new web roll 1 after the tailoring process is spliced to the old web roll 1 which is being fed, it is shown in FIG. As described above, the new web roll 1 and the old web roll 2 are separated from each other via the paper splicing adhesive tape (tip tape) 41 and the paper splicing adhesive tape (left and right side tapes) 42a and 42b attached to the new web roll 1. To join.

By the way, processing the web leading end portion 1a of the web roll 1 into a substantially V-shape or attaching the side tapes 42a and 42b to the substantially V-shape as adhesive tapes for paper splicing ensures reliable paper splicing. To do this. That is, when the web front end 1a is attached to the surface of the lower web (the outer peripheral surface on the roll side) and the web front end 1a is held on the outer periphery of the roll, if there are many bonding points between them (the bonding area is large), the paper splicing is performed. At times, the web front end portion 1a does not come off from the surface of the lower layer web and interferes with the paper splicing. Therefore, it is desired to join the web front end 1a and the lower web surface at as few points as possible (with as small an area as possible). As a result, much of the gap between the web tip 1a and the underlying web surface is not joined.

As described above, when a large amount of non-bonding is made between the web front end portion 1a and the lower web surface, the splicing is performed while the new web roll 1 is rotated in synchronism with the old web roll 2. When the portion 1a is processed in the generatrix direction of the outer circumference of the web roll 1 (that is, at a right angle to the longitudinal direction),
At the time of paper splicing, as the web roll 1 rotates, air is likely to be trapped in the web front end 1a from a non-bonded portion between the web front end 1a and the lower web surface. If the wind is applied to the web front end 1a, the temporary fixing will come off before splicing the paper, or the web front end 1a will be deformed even though the temporary fixing cannot be removed, and the new web roll 1 will be different from the old web roll 2. There may be a problem that the paper is not spliced in a proper posture.

On the other hand, the web front end portion 1a is, for example, shown in
When the cutting process is performed in a V shape as shown in FIG. 8 or a W shape (not shown), that is, at a large angle from the generatrix direction of the outer circumference of the web roll 1 (that is, at a shallow angle with the longitudinal direction), the web end is cut. The portion 1a and the lower surface of the web are joined to each other only at the most tip of the web tip portion 1a.
Tension can be formed on both sides of the character (side tape 4 affixed portion), and it becomes difficult for wind to be caught in the web front end portion 1a. Therefore, the web front end portion 1a is processed into a V shape or a W shape.

[0010]

By the way, in the above-described conventional web splicing tailoring structure of the web roll, the side tapes 42a, 42 are provided on the web front end portion 1a of the web roll 1.
The work of sticking b and the work of cutting (cutting) the web front end portion 1a of the web roll 1 into a substantially V shape are not easy,
Even when using a machine, there is a work load, and when performing only by hand, it takes a lot of time and effort. It also costs money.

Further, in recent years, the rotational speeds of the web rolls 1 and 2 have been increased along with the increase in printing speed, so that the front end portion 1a of the web is formed in a substantially V shape or a substantially W shape. Also in this case, in the case where it is temporarily fixed only by the front end tabs 44, it becomes easy for air to enter the gap between the web front end portion 1a and the surface of the lower web (roller side outer peripheral surface) at the time of paper splicing, The web front end portion 1a may catch wind. As a result, as described above, the problem that the temporary fixing is removed before the splicing of the paper, or the web front end portion 1a is deformed even though the temporary fixing is not removed, and the new web roll 1 is appropriate for the old web roll 2 There may be a problem that the paper is not spliced in the posture.

Therefore, as shown in FIG.
In addition, auxiliary tabs (side edge tabs) 43 are attached to the both sides of the web roll 1 (side tape 4 attachment portion) at appropriate intervals, and measures are taken to prevent this. ing. However, in order to attach the auxiliary tab 43 in this way, the work load of the tailoring process is increased and the cost is increased by this amount of work, and an unnecessary adhesive ( Tabs 43, 4
4) is increased, and if the adhesive surface of such an adhesive is exposed, there is a possibility that the adhesive adheres to an undesired portion of the web roll 1 and interferes with paper splicing.

The present invention has been devised in view of the above-mentioned problems, and makes it possible to easily perform a tailoring process for paper splicing, and to prevent the wind from catching the wind at the web leading end portion of the lower end portion of the web. It is an object of the present invention to provide a tailoring structure for web splicing of a web roll, which can be temporarily fixed to the surface of the web and the adhesive surface of a portion related to the temporary fixation is not exposed.

[0014]

Therefore, the tailoring structure for splicing web rolls of the present invention is a tailoring structure for splicing the web leading end of a new web roll to an old web roll. A sheet member joined to the tip of the web via a first joining layer, a joining material joining the back surface of the sheet member and the web surface of the lower layer of the tip of the web, and adhered to the surface of the sheet member And an adhesive layer for paper splicing to which the web of the old web roll can be joined, the joining material being an intermediate layer interposed between the back surface of the sheet member and the web surface of the lower layer of the web front end portion. And a second bonding layer for bonding the intermediate layer to the back surface of the sheet member, and a third bonding layer for bonding the intermediate layer to the web surface of the lower layer of the web front end portion. Breaking strength of the web and the joint strength of the paper joint. Layer, first above the second, is characterized in that it is set lower than any of the peel strength of the third bonding layer.

The first bonding layer is preferably interposed between the back surface of the sheet member and the front surface of the front end portion of the web. The sheet member is configured as a tape, the bonding material extends on one side of the back surface of the tape, and the first bonding layer extends on the other side of the back surface of the tape as an adhesive layer. It is preferable that the paper splicing adhesive layer is extended on the surface.

It is preferable that the first bonding layer is formed so as to be continuous with the paper splicing adhesive layer and is interposed between the front surface of the sheet member and the back surface of the front end portion of the web. The sheet member is configured as a tape, the bonding material is extended to one side of the back surface of the tape, an adhesive layer is extended to the front surface of the tape, and one side of the adhesive layer on the tape surface is the first side. It is preferable that it is used as a joining layer and the other side of the adhesive layer on the surface of the tape is used as the adhesive layer for paper joining.

The tip of the web is preferably treated in a straight line. In this case, the front end of the web may be processed in the generatrix direction of the web roll, or may be processed in a direction inclined with respect to the generatrix direction of the web roll.

The sheet member may be continuously mounted over the entire length or substantially the entire length of the web front end portion, or may be intermittently mounted over the entire length or substantially the entire length of the web front end portion.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] First, a first embodiment of the present invention will be described. FIGS. 1 and 2 show a web splicing tailoring structure of a web roll according to a first embodiment of the present invention. FIG. 1A is a perspective view of the web roll, and FIG. 1B is a cross-sectional view of a front end portion of the web roll in a side view.
FIG. 2 is a sectional view for explaining the paper splicing process. 1 and 2, the same reference numerals as those in FIGS. 6 to 8 denote the same parts.

As shown in FIG. 1, in this embodiment, one side (FIG. 1B) of the back surface (lower surface in FIG. 1B) of the tape-shaped sheet member (hereinafter referred to as tape base material) 21. On the left side), the first bonding layer 22 bonded to the web front end portion 1a is adhered in a strip shape in the longitudinal direction of the tape, and the back surface of the tape base material 21 (the lower surface in FIG. 1B).
A tape-shaped bonding material 30 is attached to the other side (right side in FIG. 1B). Further, on the surface of the tape base material 21 (the upper surface in FIG. 1B), a paper splicing adhesive layer 23 to which the web of the old web roll can be bonded is spread over substantially the entire width and extends in the longitudinal direction of the tape to be attached in a strip shape. Has been done.

As described above, the first surface of each tape base material 21 is formed on each surface.
The joining layer 22, the paper joining adhesive layer 23, and the joining material 30 are attached to form the tailoring tape 20A. This tailoring tape 20A has good workability if it is wound like an ordinary double-sided tape. In this case, the outer peripheral surface of the wound tape 20A has the first bonding layer 22 and the bonding material 3
It is preferable to correspond to the above-mentioned back surface to which 0 is attached.

Of course, this tailoring tape 20A
Is not limited to a tape-shaped one as long as it has each of the above-mentioned components, and may be, for example, an elongated sheet-shaped (planar) shape. In this case, workability is good if the length of each sheet is set to a predetermined length. By the way, the bonding material 30 attached to one surface of the tape base material 21 is the intermediate layer 31.
And a second bonding layer 32 for bonding the intermediate layer 31 to the back surface of the tape base material 21, and the intermediate layer 31 to the web surface of the lower layer (second layer of the web roll 1) 12 of the web front end 1a. It has a third bonding layer 33. Reference numeral 11 indicates a layer of the web front end 1a [outermost layer (first layer) of the web roll 1].

The breaking strength of the intermediate layer 31 is lower than the breaking strength of the web and the peel strength of each of the adhesive layers 23 for paper splicing and the first, second and third joining layers 22, 32, 33. It is set. That is, in a state where the new web roll 1 and the old web roll 2 are rotated in synchronization with each other, the web of the new web roll 1 is joined to the web of the old web roll 2 and is fed by the web of the old web roll 2. Then, as a matter of course, the web is not broken, and the adhesive portions of the paper splicing adhesive layer 23 and the first, second, and third joining layers 22, 32, and 33 are peeled off. The intermediate layer 31 is surely broken (broken into layers) with a force that does not occur.

In the present embodiment, as shown in FIG. 1 (a), the web front end portion 1a of the web roll 1 is linearly cut in the generatrix direction of the web roll 1 (direction orthogonal to the longitudinal direction of the web). The tape 20A for tailoring treatment is attached along the edge (front edge) of the web front end portion 1a of the web roll 1 as described above. A tailoring structure is formed.

Since the web splicing tailoring structure for the web roll according to the first embodiment of the present invention is configured as described above, the web front end 1a of the web roll 1 is moved to the web to perform tailoring. The web 1 is cut linearly in the generatrix direction of the roll 1 (direction perpendicular to the longitudinal direction of the web), and the outer circumference of the web roll 1 is along the edge (front edge) of the web front end 1a of the web roll 1 that has been processed. The tailoring tape 20A may be attached.

At this time, the tailoring tape 20A is wound like an ordinary double-sided tape, and the outer peripheral surface of the wound tape 20A has the first bonding layer 22 and the bonding material 30.
It is obvious that the work will be easier if the surface is attached with. Further, when the tailoring tape 20A is in the form of an elongated sheet (planar shape), the length of each sheet is set to the total length (web width) of the edge (front edge) of the web front end 1a. After all, the work can be done easily.

After the tailoring process is performed in this manner, it is possible to splice the paper as shown in FIG. That is, in a state where the new web roll 1 and the old web roll 2 are synchronously rotated (both webs have a constant speed), the new web roll 1
When the web of the old web roll 2 and the web of the old web roll 2 are brought close to each other, the paper splicing adhesive layer 23 of the tailoring tape 20A joined to the web front end portion 1a of the new web roll 1 is joined to the web of the old web roll 2. However, at the same time, the web of the new web roll 1 is about to be paid out by the web of the old web roll 2. At this moment, the new web roll 1 has the old web roll 2 on its web.
Transport force is applied from the web of, but in the bonding material 30,
The breaking strength of the intermediate layer 31 is determined by the breaking strength of the web, the adhesive layer 23 for paper splicing, the first, second, and third joining layers 22, 32, and 3.
Since it is set lower than any of the peel strengths of 3,
The adhesive layer 23 for paper splicing without breaking the web,
The intermediate layer 31 is broken into layers and the web of the new web roll 1 is smoothly fed out without peeling off any of the bonded portions of the first, second, and third bonding layers 22, 32, 33. 2 (b) and 2 (c)].

Therefore, the tailoring process becomes extremely simple, and the web 30 is securely held on the outer periphery of the web roll 1 by the joining material 30 without being peeled off until the paper is spliced. The intermediate layer 31 of the material 30 is broken, and the web of the new web roll 1 is fed out together with the web of the old web roll 2, so that the splicing can be reliably performed.

Even when the joining material 30 is mounted over the entire length of the web front end portion 1a in the web width direction, the intermediate layer 31 of the joining material 30 is reliably broken at the time of paper splicing, so that the paper splicing can be reliably performed. Therefore, the web front end 1a can be joined to the web surface of the lower layer 12 without leaving a gap in the web width direction. Therefore, the new web roll 1 can be spliced in a proper posture with respect to the old web roll 2 without blowing the wind on the tip of the web even when the web roll is rotated.

Further, when the intermediate layer 31 is broken, the web front end 1a is separated from the outer circumference of the web roll 1. Therefore, as in the case where the web front end is held on the outer circumference of the roll by conventional tab adhesion, Web roll 1
The adhesive surface will not be exposed after it is removed from the outer periphery of
It is also possible to avoid the possibility that the adhesive surface is exposed and the paper splicing is hindered. Of course, there is also an advantage that the cost required for tailoring can be easily suppressed.

[Second Embodiment] Next, a second embodiment of the present invention will be described. FIGS. 3 and 4 show a web splice tailoring structure as a second embodiment of the present invention. 3 (a) is a perspective view of the web roll, FIG. 3 (b) is a cross-sectional view of the web leading end of the web roll in a side view, and FIG. 4 is a cross-sectional view for explaining the paper splicing process. In FIGS. 3 and 4, the same reference numerals as those in FIGS. 1, 2 and 6 to 8 indicate the same parts.

As shown in FIG. 3, in this embodiment, one side (FIG. 3B) of the back surface (lower surface in FIG. 3B) of the tape-shaped sheet member (hereinafter referred to as tape base material) 21. The tape-shaped joining material 30 is attached to the right side), and the surface of the tape base material 21 (the upper surface in FIG. 1B).
An adhesive layer 24, which also serves as a paper splicing adhesive layer to which the web of the old web roll can be joined and the first joining layer, is adhered in a strip shape over substantially the entire width and extending in the longitudinal direction of the tape.

In this way, the dual-purpose adhesive layer 24 and the bonding material 30 are attached to each surface of the tape base material 21 to form the tailoring tape 20B. This tailoring tape 20
Similar to the first embodiment, B has good workability as long as it is wound like a normal double-sided tape. In this case, it is preferable that the outer peripheral surface of the wound tape 20A corresponds to the back surface to which the bonding material 30 is attached.

Of course, this tailoring tape 20B
Also, as long as it has each of the above-mentioned components, it is not limited to a tape-like one, and may be an elongated sheet-like (planar) one, for example. In this case, workability is good if the length of each sheet is set to a predetermined length. The bonding material 30
Has the same configuration as that of the first embodiment,
The description is omitted.

Since the web splice tailoring structure for the web roll according to the second embodiment of the present invention is configured as described above, the web front end 1a of the web roll 1 is moved to the web to perform the tailoring process. The web 1 is cut linearly in the generatrix direction of the roll 1 (direction perpendicular to the longitudinal direction of the web), and the outer circumference of the web roll 1 is along the edge (front edge) of the web front end 1a of the web roll 1 that has been processed. The tailoring tape 20B may be attached.

At this time, the front end portion 1a of the web is slightly lifted up, and the web layer 11 of the front end portion 1a of the web and the lower layer 12 thereunder.
The tailoring tape 20B is inserted between and, and one side of the dual-purpose adhesive layer 24 is attached to the back surface of the web front end 1a.
When the tailoring process is performed in this manner, FIG.
As shown in (c), splicing can be performed. Since this point is the same as that of the first embodiment, description thereof will be omitted.

Therefore, in this embodiment, the dual-purpose adhesive layer 24 has the advantage that the structure of the tailoring tape 20B is simplified, and the tailoring process is also extremely simple. Further, until the paper is spliced, the web 1 is securely held on the outer circumference of the web roll 1 without being peeled off by the bonding material 30, and at the time of paper splicing, the intermediate layer 31 of the bonding material 30 is broken and the new web is The web of roll 1 is the old web roll 2
This is also the same as in the first embodiment in that it is fed out integrally with the web and the paper splicing can be reliably performed.

Further, even if the bonding material 30 is mounted over the entire length of the web front end portion 1a in the web width direction, the paper splicing can be reliably performed, and the wind is not caught in the web front end portion even when the web roll is rotated. , The new web roll 1 can be spliced in a proper posture with respect to the old web roll 2, and the adhesive surface is not exposed after being separated from the outer periphery of the web roll 1, and the adhesive surface is exposed. Similar to the first embodiment, it is possible to avoid the possibility of interfering with paper splicing. Of course, it is easy to reduce the cost required for tailoring.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above embodiment, the web roll 1
Although the web leading end portion 1a is linearly cut in the generatrix direction of the web roll 1 (direction orthogonal to the longitudinal direction of the web), as shown in FIG. The tape 20 is cut along a straight line that is inclined with respect to the direction perpendicular to the longitudinal direction of the web, and the tape 20
(20A, 20B) may be attached.

In the above embodiment, the tape 20 (2
0A, 20B) are continuously attached over the entire length or substantially the entire length of the web front end portion 1a, but as shown in FIG. 5B, if they are intermittently attached over the entire length or substantially the entire length of the web front end portion 1a. The consumption cost of the tape 20 can be suppressed. In this case, it is preferable to set the interval so that the wind is not caught in the web front end 1a.

[0041]

As described in detail above, according to the paper splicing tailoring structure of the web roll of the present invention, the sheet member is the first member.
Since it is directly bonded to the web front end of the new web roll through the bonding layer of, and the back surface of the sheet member and the web surface of the lower layer of the web front end are bonded via a bonding material, until the paper is spliced, The leading edge of the web is held on the outer circumference of the new web roll without peeling off.

At the time of paper splicing, when the web of the old web roll is joined to the adhesive layer for paper splicing adhered to the surface of the sheet member of the new web roll, the front end of the web of the new web roll passes through the sheet member. It joins with the web of and rolls out with the web of the old web roll.
At this time, the bonding material bonds the back surface of the sheet member and the web surface of the lower layer of the web front end portion, but the bonding material is interposed between the back surface of the sheet member and the lower surface of the web front end portion. An intermediate layer, a second bonding layer for bonding the intermediate layer to the back surface of the sheet member, and a third bonding layer for bonding the intermediate layer to the web surface of the lower layer of the web front end portion,
Since the breaking strength of the intermediate layer is set lower than the breaking strength of the web and the peel strengths of the adhesive layer for paper splicing and the first, second, and third bonding layers, When the web front end of the web roll is pulled by the web of the old web roll, the intermediate layer is surely broken, and the back surface of the sheet member is separated from the web surface of the lower layer of the web front end, and the web front end of the new web roll is separated. The part is fed together with the web of the old web roll to complete the splicing.

With such a web roll, in the structure in which the web front end of the new web roll is held on the outer periphery of the new web roll, the intermediate layer of the bonding material having a low breaking strength is broken, so that the web front end is moved to the outer periphery of the web roll. Since it is separated from the web, the joining material is interposed over the entire length in the web width direction of the web front end, and the back surface of the sheet member and the web surface of the lower layer of the web front end are joined without leaving a gap in the web width direction. You can Therefore, the new web roll can be spliced in a proper posture with respect to the old web roll without blowing wind on the front end of the web even when the web roll is rotated.

Further, since the front end of the web is separated from the outer circumference of the web roll when the intermediate layer is broken, the web front end of the web roll is retained as in the conventional case where the front end of the web is held on the outer circumference of the roll by adhesion of the tab. The adhesive surface will not be exposed after being separated from the outer periphery, therefore,
It is also possible to avoid the possibility that the adhesive surface will be exposed and the splicing will be hindered (above, claim 1).

By interposing the first bonding layer between the back surface of the sheet member and the front surface of the web front end portion, the bonding material is bonded to the back surface when the sheet member is bonded to the web front end portion. By simply pasting the formed sheet member along the edge of the web front end from the outer circumference of the web roll, the sheet material is joined to the web front end portion of the sheet member, and at the same time, the bonding material on the back surface of the sheet member is used as the web roll of the lower layer of the web front end portion. It becomes possible to join to the outer circumference of, and workability is improved (claim 2).

The sheet member is formed as a tape, the bonding material is extended on one side of the back surface of the tape, and the first bonding layer is extended as an adhesive layer on the other side of the back surface of the tape.
If the adhesive layer for paper splicing is extended on the surface of the tape,
The sheet member can be easily managed, and the sheet members can be easily joined along the edge of the web front end portion (claim 3).

If the first joining layer is arranged between the front surface of the sheet member and the back surface of the web front end portion so as to be continuous with the paper splicing adhesive layer, the first joining layer is formed. The bonding layer can be integrated with the adhesive layer for paper splicing, and the surface treatment of the sheet member (first
The formation of the bonding layer and the adhesive layer for paper splicing) can be simplified (claim 4). The sheet member is configured as a tape, the bonding material is extended to one side of the back surface of the tape, an adhesive layer is extended to the front surface of the tape, and one side of the adhesive layer on the tape surface is the first side. If it is used as a bonding layer and the other side of the adhesive layer on the surface of the tape is used as the adhesive layer for paper splicing, the sheet member can be easily managed, and the bonding of the sheet member along the edge of the web front end portion can be facilitated. It can be done (Claim 5).

It is easy to process the front end portion of the web in a straight line and process it in the direction of the generatrix of the web roll, or in the direction inclined with respect to the direction of the generatrix of the web roll. By this, tailoring processing can be easily performed (claims 6 to 8). When the sheet member is continuously mounted over the entire length or substantially the entire length of the web front end, the back surface of the sheet member and the web front surface of the lower layer of the web front end are joined together without leaving a gap in the web width direction, and the web Even when the roll is rotated, the new web roll can be spliced in a proper posture with respect to the old web roll without the wind being caught in the front end of the web (claim 9).

If the sheet member is intermittently mounted over the entire length or substantially the entire length of the front end portion of the web, the consumption of the sheet member can be saved (claim 10).

[Brief description of drawings]

FIG. 1 is a diagram showing a web splicing tailoring structure of a web roll according to a first embodiment of the present invention, in which (a) is a perspective view of the web roll and (b) is a web front end of the web roll. It is sectional drawing by the side view of a part.

FIG. 2 is a cross-sectional view for explaining the paper splicing process of the web roll according to the first embodiment of the present invention in the order of (a) to (c) [FIG.
It is a figure corresponding to (b)].

3A and 3B are views showing a paper splicing tailoring structure of a web roll according to a second embodiment of the present invention, in which FIG. 3A is a perspective view of the web roll, and FIG. It is sectional drawing by the side view of a part.

FIG. 4 is a cross-sectional view for explaining the paper splicing process of the web roll according to the second embodiment of the present invention in the order of (a) to (c) [FIG.
It is a figure corresponding to (b)].

FIG. 5 is a diagram showing a paper splicing tailoring structure of a web roll according to modified examples of the first and second embodiments of the present invention,
(A) is a figure showing the 1st modification, and (b) is a figure showing the 2nd modification.

FIG. 6 is a perspective view of a web roll showing a conventional paper splicing tailoring structure.

7A and 7B are views showing a conventional web splicing tailoring structure, wherein FIG. 7A is a front view of a web leading end portion of the web roll, and FIG. 7B is a side view of the web leading end portion of the web roll. FIG.

FIG. 8 is a perspective view illustrating a splicing state of a conventional web roll.

[Explanation of symbols]

1 New web roll 1a New web roll tip 2 Old web roll 11 Outermost layer of web roll 1 (first layer) 12 Second layer of web roll 1 20, 20A, 20B Tailoring tape 21 Sheet member (tape base material) 22 First bonding layer 23 Adhesive layer for paper splicing 24 Combined adhesive layer 30 bonding material 31 Middle class 32 Second bonding layer 33 Third Bonding Layer

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yuichiro Yamashita             Hiroshima Prefecture Mihara City Itozakicho 5007 Mitsubishi Heavy Industries             Paper and printing machinery division F term (reference) 3F064 AA01 BB02 BB05 BB17 BB21                       CC04 FA01

Claims (10)

[Claims] 1. A tailoring structure for joining a web front end of a new web roll to an old web roll, the sheet member being bonded to the web front end via a first bonding layer, A bonding material for bonding the back surface of the sheet member and the lower surface of the web at the front end of the web member; and a paper splicing adhesive layer that is adhered to the surface of the sheet member and can bond the web of the old web roll. The bonding material is an intermediate layer interposed between the back surface of the sheet member and the web surface of the lower layer of the web tip portion, and a second bonding layer for bonding the intermediate layer to the back surface of the sheet member, A third bonding the intermediate layer to the web surface of the lower layer of the web tip;
And the breaking strength of the intermediate layer is higher than the breaking strength of the web and the peel strength of each of the adhesive layer for paper splicing and the first, second and third bonding layers. Characterized by being set low,
Tailoring structure for web roll paper splicing. 2. The paper splicing of the web roll according to claim 1, wherein the first bonding layer is interposed between the back surface of the sheet member and the front surface of the web front end portion. Tailoring structure. 3. The sheet member is configured as a tape,
The bonding material is extended on one side of the back surface of the tape, the first bonding layer is extended on the other side of the back surface of the tape as an adhesive layer, and the adhesive layer for paper splicing is formed on the front surface of the tape. 3. The web splicing tailoring structure according to claim 2, which is extended. 4. The first bonding layer is formed so as to be continuous with the paper splicing adhesive layer, and is interposed between the front surface of the sheet member and the back surface of the front end portion of the web. The tailoring structure for paper splicing of the web roll according to claim 1. 5. The sheet member is configured as a tape,
The bonding material is extended on one side of the back surface of the tape, an adhesive layer is extended on the front surface of the tape, and one side of the adhesive layer on the tape surface is used as the first bonding layer. 5. The web splice tailoring structure according to claim 4, wherein the other side of the adhesive layer is used as the paper splice adhesive layer. 6. The tailoring processing structure for web splicing of a web roll according to claim 1, wherein the front end of the web is processed in a straight line. 7. The paper splicing tailoring structure for a web roll according to claim 6, wherein the web front end is processed in the generatrix direction of the web roll. 8. The web splicing tailoring structure according to claim 6, wherein the web leading end is processed in a direction inclined with respect to the generatrix direction of the web roll. 9. The web splice of a web roll according to claim 6, wherein the sheet member is continuously attached over the entire length or substantially the entire length of the web front end portion. Tailoring processing structure. 10. The web splice of the web roll according to claim 6, wherein the sheet member is intermittently mounted over the entire length or substantially the entire length of the front end portion of the web. Tailoring processing structure.