JPH09255218A - Machining method for laminated web and machining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily prevent the accumulation of the elongation of a web and the occurrence of a slack of the web by adjusting the angle of at least one of the pass lines for feeding and delivering the laminated web at the first and second nip points against the tangential lines at the nip points. SOLUTION: When a web A is made of a strong and hardly extended material and a web B is made of a weak and easily extended material, the pass line for feeding a laminated web W1 at the first nip point of a master roller 4 and the first nip roller 5 is deflected to the upper position than the horizontal tangential line at the nip point. The web B is made faster than the web A, the master roller 4 and the first nip roller 5 are free rollers, and they are rotated while keeping the peripheral speed difference corresponding to the speed difference between both webs A, B. The web B is extended at the first nip point and is fed faster than the web A, the elongation of the web B is absorbed by the speed difference between both webs A, B, and the occurrence of its slack is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing method and a processing apparatus for processing one of the bonded webs, and specifically, for example, a release paper is bonded to an adhesive surface for protection thereof. The present invention relates to a processing method and a processing apparatus for performing slit processing on release paper for tack paper such as patches, labels, and courier slips to facilitate the separation.

[0002]

2. Description of the Related Art As one method of slitting one of the bonded webs, a fixed knife, a rotary score cutter or the like is cut into the bonded web from one side while being bonded to the bonded web. It is known that a slit is formed only in one of the webs by pressing it under the limit of. However, with this method, it is extremely difficult to precisely cut only one of the bonded webs without excess or deficiency, or to accurately cut to a uniform depth with multiple blades in the case of multi-row cutting. However, there is a problem that the quality of the cut end of the web is deteriorated because the cutting is performed from only one side.

As a method for solving the above problem, there is known a method in which a bonded web is temporarily separated into two webs, one of the webs is slit and then the other web is bonded again.

However, the above-mentioned laminated web to be processed is obtained by pulling out the respective webs from two raw material rolls, which are originally provided separately, and laminated them. It depends on the condition of tension balance due to the tension control of the web, and it is also greatly affected by the elongation strength (tension against elongation = spring constant) of the material of each web.

Therefore, if the two webs are simply combined and separated, and then they are combined again, the tension of each separated web can be adjusted by pulling the webs by exactly the same length. The tension balance of each web will be the same as the tension balance of each web.If the tension is applied to the entire web after re-adjustment, the tension of each web will be proportional to the elongation strength of the material of each web. No matter how easily the material stretches, it exhibits a small tension of 0 or more and does not loosen.

However, in an actual laminating web, since both webs are not simply laminated but are laminated via an adhesive, when they are separated, they have the same size according to the adhesive strength of the adhesive. The peeling tension acts on the web to exert it on the tension, and the two webs have a difference in elongation at the time of separation according to the difference in the elongation strength of their materials. This situation will be described with reference to the drawings. FIG. 4 is a side view of a main part of a bonding web processing apparatus according to the related art in a normal operating state, and FIGS. FIG. 4 is a side view of a main part of the processing apparatus for the laminated web in an abnormal operation state, in which the bonded web W ₁ pulled out from a rewinding raw material (not shown) has a master roller 4 and a first nip roller 5; Of the first nip roller 5 at the exit of the first nip point.
Side web A and master roller 4 side web B are separated. The separated web A is guided to a processing section (not shown) formed of a slitter or the like to be subjected to required processing, and then is guided to a second nip point between the master roller 4 and the second nip roller 9, and the second web A The separated web B is bonded at the nip point, and is drawn out as one bonded web W ₂ at the outlet of the second nip point.

In the above structure, if both webs A and B constituting the laminated web W ₁ have exactly the same elongation characteristics, a peeling tension at the time of separation causes a difference in elongation between both webs A and B. However, as shown in FIG. 4, no slack is generated in either of the webs A and B after separation, so that the processing apparatus operates normally. However, web A is web B
In the case where the webs A and B are not easily stretched as compared with the above, as shown in FIG. 5, the difference in the stretches of the webs A and B due to the separation is accumulated, and the weaker web B is loosened, and the webs A and B are loosened. The separation point gradually moves toward the stronger side of the web A, in which the web B bites into the processed portion, causing breakage and the like, which makes operation impossible. Contrary to the above, when the web A is weaker and easier to stretch than the web B, as shown in FIG. 6, the weaker web A is loosened due to the separation, and both webs A and B are slackened. The separation point is gradually moved to the stronger side of the web B, and the web A bites into the second nip point in the separation point, resulting in the inoperability.

As a method for solving such a problem, for example, there is a method in which a dancer roller is placed in contact with each separated web and an appropriate tension control is performed for each web individually. This situation will be described with reference to a specific example. FIG. 7 is a schematic side view of another bonding web processing apparatus according to the related art. In FIG. 7, a bonding sheet pulled out from a rewinding material (not shown) is bonded. The web W ₁ is supplied to the first nip point between the master roller 4 and the first nip roller 5, and separated at the exit of the first nip point into the web A on the first nip roller 5 side and the web B on the master roller 4 side. . The web A after separation is tension-controlled by the dancer roller 21 and is guided to the second nip point between the other master roller 22 and the second nip roller 9, and the web B after separation is tension-controlled by the dancer roller 23. And the slitter 6 which is the processing part
Is guided to the second nip point, is bonded to the web A, and is drawn out as one bonded web W ₂ at the exit of the second nip point.

However, the above processing method which relies on tension control is
It can be carried out within a certain tension balance range,
Beyond that range, the weaker and more stretchable web stretches with the processing length, so to absorb the slack caused by it, give the dancer roller a very large stroke close to infinity. It is necessary and practically impossible. Further, in order to stop the accumulation of the elongation of the weaker web as described above, it is sufficient to apply a tension to the stronger web that is less likely to elongate to cause the elongation of the weaker web to be greater than that of the weaker web. If there is an extreme difference in elongation strength and the stronger web is made of a material with extremely high elongation strength, it is necessary to apply extremely high tension close to infinity to this web, which is also impractical in practice. Becomes

As another solution, Japanese Patent Publication No. 4-6
Japanese Patent No. 2985 proposes a processing apparatus including a separating mechanism that separates a bonded web by a pair of driving suction rollers that are in contact with each other and sends the separated webs along the suction rollers. . According to this processing device, it is possible to prevent the movement of the separation point of both webs as described above by the action of the intake pressure of the pair of drive suction rollers, but it is not possible because of the drive mechanism and the intake mechanism of each suction roller. The structure is complicated and the cost is high.
Further, in the processing apparatus, when the bonded web after re-bonding is pulled out, the unslit web is brought into contact with one of the drive suction rollers, whereas the slit web is in contact with the suction roller. Since it is located near the driving nip roller, a peripheral speed difference occurs between the suction roller and the nip roller depending on the angle of the pass line relating to the pulling out of the bonded web, and a speed difference occurs between the separating webs. The application range of the processing device is limited by the properties of the bonded webs, and the materials of both webs are limitedly applied within a certain combination condition or the elongation strength ratio of the materials within a certain range. .

On the other hand, in order to make it easier to peel off the release paper such as tack paper, it may be necessary to make a slight gap in the slit when slitting one of the bonded webs. Such processing could not be performed by any of the above-mentioned conventional techniques.

[0012]

SUMMARY OF THE INVENTION In view of the above drawbacks of the prior art, the object of the present invention is to form various bonded webs when processing one of the bonded webs. It can be easily applied according to the combination conditions of the material of the web and the range of the elongation strength ratio, etc., and the accumulation of the elongation of the material of the material with a small elongation strength after separation and the occurrence of the looseness of the web can be easily generated at low cost. It is possible to obtain a uniform and stable high quality processed laminated web product by preventing it, and a very simple structure without using a complicated driving mechanism or separation mechanism. Accordingly, it is an object of the present invention to provide a processing apparatus for a bonded web that can be effectively performed without complicated maintenance work.

[0013]

In order to solve the above-mentioned problems, in a method for processing a laminated web according to the present invention, a master roller is contacted with a first nip roller and a second nip roller, and a first nip point and a second nip point are formed. Each of the nip points is formed, and a processing section is provided between the outlet of the first nip point and the second nip point to continuously supply the long bonding web to the first nip point and At the outlet, it is separated into a web on the first nip roller side and a web on the master roller side,
The web on the master roller side is guided to the second nip point, and the web on the first nip roller side is guided to the processing section to be processed and then guided to the second nip point along the second nip roller to the second nip point. In the processing method in which both webs are re-bonded together and continuously drawn out as one bonded web at the exit of the second nip point, the master roller, the first nip roller and the second nip roller are composed of non-driving free rollers. In addition, at least one of the pass lines for feeding and drawing out the bonded web at the first nip point and the second nip point is angle-adjusted with respect to the tangent line at the nip point.

Further, the processing apparatus for a laminated web according to the present invention includes a master roller, a first nip roller which contacts the master roller to form a first nip point, and a second nip point which contacts the master roller. The second nip roller to be formed and a processing part provided between the outlet of the first nip point and the second nip point are provided, and the long bonding web is continuously supplied to the first nip point and At the exit of the nip point, the web on the first nip roller side and the web on the master roller side are separated, the web on the master roller side is guided to the second nip point along the master roller, and the web on the first nip roller side is processed. After guiding and processing it, it is guided to the second nip point along the second nip roller, the two webs are re-bonded at the second nip point, and at the exit of the second nip point, In a processing device that continuously draws out as a laminated web, the master roller, the first nip roller and the second nip roller are composed of non-driving free rollers, and the laminated web is supplied at the first nip point and the second nip point. And a path line adjusting means for adjusting the angle of at least one of the path lines related to the drawing with respect to the tangent line at the nip point.

In the processing method and the processing apparatus having the above-mentioned structure, the master roller, which is a non-driving free roller, the first nip roller and the second nip roller rotate as the bonded web is pulled out at the exit of the second nip point. To be made.

By appropriately adjusting the angle of the path line for feeding the bonded web at the first nip point to the master roller side or the first nip roller side with respect to the tangent line at the first nip point, in other words, the first nip. By appropriately adjusting the feed angle of the laminating web with respect to the tangent line at the point, a speed difference is generated between the inner web and the outer web of the laminating web at the inlet side of the first nip point, and contact with them causes A peripheral speed difference is generated between the rotated master roller and the first nip roller, whereby a required speed difference is provided between the weak and easily stretchable web and the strongly and hard stretchable web after separation of the bonded web, and the weaker web. The web that is stronger is transported faster by the amount that can absorb the difference in elongation between the two webs that occurs during separation. Bed while retaining the desired speed difference as not to cause weaker web slack, thus the result is adhered again at a second nip point under stable tension. Even if the speed difference between the two webs is only about 0.1 to 0.2%, it does not apply a large tension to the stronger web, and the elongation of the weaker web is absorbed by the speed difference. However, in some cases, a speed difference slightly exceeding the speed difference corresponding to the elongation of the weaker web is generated in both webs, and a slight tension is applied to the weaker web, so that the running state Can be more stable.

Similarly, in the above structure, the pass line relating to the drawing out of the bonded web at the second nip point is appropriately adjusted in angle toward the master roller side or the second nip roller side with respect to the tangent line at the second nip point. In other words, by appropriately adjusting the pull-out angle of the bonded web with respect to the tangent line at the second nip point,
A master roller that causes a speed difference between the inner peripheral web and the outer peripheral web of the bonded web at the exit side of the nip point and is rotated by contact with the second and the second rollers.
A peripheral speed difference is generated between the nip roller, which gives a necessary speed difference between the weaker web and the stronger web before the re-bonding of the bonded web, and in the same manner as described above, For the stronger web,
It is transferred as fast as it can absorb the difference in elongation between both webs that occurs during separation.

As described above, the above action prevents the accumulation of the difference in elongation between the two webs due to the difference in the elongation strength of the two webs due to the peeling tension at the time of separation. The tension of each web at the time of laminating both webs is not only possible, for example, when the stronger web is stretched with a large tension and the weaker web is laminated in a rather contracted state. It is also possible to suitably deal with the accumulation of the difference in elongation between both webs caused by the situation of tension balance under control.

At the first nip point and the second nip point,
In addition to the operation described above based on the adjustment of the angle of the pass line in the laminated web, the influence of the nip force also occurs. For example, when there is a large difference in hardness between the two webs, as the nip force increases, the softer web at each nip point is pushed and stretched to a greater extent than the harder web, and becomes longer. Further, for example, when the surface material of both rollers facing each other across each nip point is made of a soft material such as rubber and the other is made of a hard material such as metal, the rollers made of a soft material at each nip point. As the roller is deformed and stretched, the peripheral speed of the roller as a whole becomes lower than that of the other roller, whereby the speed of the web fed along the roller made of the soft material decreases. Therefore, the quality of the bonded web after re-bonding can be improved not only by adjusting the angle of the pass line in the bonding web, but also by adjusting the nip force as described above and selecting the surface material of both rollers at each nip point. It is possible to adjust.

If necessary, the processing device may be provided with a widened portion on the path of the web on the side of the first nip roller from the processing portion to the second nip roller. In this case, the processed web is After being widened in a desired manner by the widening portion, it is guided to the second nip point through the second nip roller and bonded to the other web. As the widened portion, for example, a known spreader bar, expander roller, or the like is used. For example, by using a spreader bar capable of adjusting the whole overhanging position and the whole or partial curvature with respect to the web subjected to the slit processing by the processing portion, it is possible to adjust the average width expansion amount of all slits and the slit position. The amount of partial width expansion can be adjusted, and desired slits can be easily formed in all slits.

The angle adjustment of the pass line relating to the supply of the laminated web and the angle adjustment of the pass line relating to the pulling out of the laminated web are carried out alternatively or in combination as required. , In the usual case, when performing the processing of the laminated web by the above-mentioned processing method or processing apparatus,
The angle is preliminarily set so that the above-mentioned action works optimally on both webs under given processing conditions.

As the pass line adjusting means for adjusting the angle of the pass line, the inlet side of the first nip point and the second side
At least one of the exit sides of the nip points can be suitably adopted which comprises an adjusting roller provided so that the bonded web can be guided and displaceable with respect to the tangent line at the nip point. For example, it may be provided so as to be swingable about an axis parallel to the central axis of the master roller. In these cases, the pass line is angularly adjusted to a desired position by displacing the adjusting roller to a desired position through a displacement mechanism that causes the adjusting roller to swing, move linearly, or the like.

[0023]

1 is an overall side view of an apparatus for processing a laminated web according to an embodiment of the present invention, FIG. 2 is a side view of a master roller and a first nip roller in FIG. 1, and FIG. 3 is a master roller in FIG. FIG. 4 is a side view of the second nip roller, and FIGS. 2 and 3 show the web thickness extremely enlarged in order to explain the operation of the present invention.

In FIG. 1, the laminated web W ₁ is pulled out from a rewinding original web (not shown), and the guide rollers 1, 2 are drawn.
And the supply side adjusting roller 3 and sequentially supplied to the first nip point between the master roller 4 and the first nip roller 5,
At the exit of the nip point, the web A on the first nip roller 5 side and the web B on the master roller 4 side are separated. The separated web A is guided to the slitter 6 while adjoining the first nip roller 5 and subjected to a required slitting process, and then passes through the spreader bar 7 and the guide roller 8 to form the master roller 4 and the second nip roller 9. It is guided to the second nip point and is re-bonded at the second nip point with the web B transferred along the master roller 4 after the separation, and at the exit of the second nip point, the pull-out side adjusting roller 10 and the guide roller 11
The laminated web W ₂ is drawn out.

The master roller 4, the first nip roller 5, the second nip roller 9 and the respective guide rollers 1, 2,
All 8 and 11 are composed of non-driving free rollers.

The supply-side adjusting roller 3 and the pull-out-side adjusting roller 10 serve as pass line adjusting means for each swing shaft 1.
The swing shafts 12 and 13 are provided so as to be swingable up and down around 2 and 13 and to be fixed at a predetermined position, and a worm gear (not shown) is operated by operating a handle (not shown).
And rotating the supply-side adjusting roller 3 and / or the pull-out-side adjusting roller 10 to a required position, thereby supplying the bonding webs W ₁ and W ₂ at the first nip point and the second nip point. At least one pass line relating to the drawing is angle-adjusted with respect to the horizontal tangent line at the nip point, in other words, the feeding angle of the bonding webs W ₁ and W ₂ with respect to each tangent line at the first nip point and the second nip point. And / or the withdrawal angle is adjusted. The supply side adjusting roller 3 and the drawing side adjusting roller 10 may be displaced with respect to each tangent line by a mechanism other than the swinging.

The first nip roller 5 and the second nip roller 9 receive the first nip point and the second nip roller under the respective required nip forces.
Each air cylinder 14, 15 to form a nip point
It is pressed against the master roller 4 or is held at a required interval with respect to the master roller 4 when the bonded webs W ₁ and W ₂ are first passed through the processing device. Instead of the air cylinders 14 and 15, for example, a mechanism including a spring and a manual lever can be adopted.
To separate the bonded web W ₁ at the first nip point, it is not necessary to apply a large nip force to the first nip point, and to bond both webs A and B at the second nip point, It is necessary to apply a nip force of a magnitude suitable for bonding to the two nip points.

The slitter 6 is composed of a lower blade 16 as a processing portion and an upper blade 18 which can be moved toward and away from the lower blade 16 about a swing shaft 17, and the web A after separation is separated.
The upper blade 1 while bending around the lower blade 16 and passing therethrough.
8 and 8 are sharply slit at a required position and the number of threads by a shear cutting method. Since a slight load is applied to the slitter 6 due to the slit processing, the master roller 4 and the lower blade 16 are rotatably connected by an interlocking mechanism, and the lower blade 16 is applied by the tension of all the bonded webs W ₁ and W _2. May be driven.

Further, the spreader bar 7 arranged at a position near the second nip point on the path of the web A is a widening portion, and the overhanging position and the whole or partial curvature of the whole web A can be freely adjusted. This makes it possible to open desired gaps in all the slits of the web A that has been slit as described above. Web A
When processing other than slit processing is performed on the above, a widened portion formed of, for example, an expander roller or the like can be used instead of the spreader bar 7 as necessary.

In the above structure, for example, when the web A is made of a material that is not easily stretched and the web B is made of a material that is weak and easily stretched, the supply-side adjusting roller 3 is swung upward, and as shown in FIG. When the path line relating to the supply of the bonded web W ₁ at the first nip point is changed to a position above the horizontal tangent line at the nip point, the bonded web W ₁ is moved by a slight angle from the first nip point. The outer web B becomes faster than the inner web A while curving to the nip roller 5 side, and both the master roller 4 and the first nip roller 5 in contact with them are non-driving free rollers, so both webs are not driven. Rotation is performed while maintaining the peripheral speed difference corresponding to the speed difference between A and B.

That is, at the adjusting position of the pass line shown in FIG. 2, the speed of the web A after separation: v ₁ , the thickness of the web A: t ₁ , the radius of the first nip roller 5: r ₁ , the web after separation. If the speed of B is v ₂ , the thickness of the web B is t ₂ , and the radius of the master roller 4 is r ₃ , then (v ₁ / v ₂ ) = {r ₁ + (1/2) t ₁ } / {r ₁ +
The theoretical formula (1) of t ₁ + (1/2) t ₂ } is established.

Here, (1/2) (t ₁ + t ₂ ) = t ₃
Then, the theoretical formula (1) is as follows: (v ₁ / v ₂ ) = {r ₁ + (1/2) t ₁ } / {r ₁ +
It is transformed into (1/2) t ₁ + t ₃ }.

[0033] Now, when t ₁ compared to r ₁ is very small (r ₁ »t _1), as an approximation equation _{(v 1 / v 2) ≒} r 1 / (r 1 + t 3) is established.

In the above approximation equation, as a real value, for example, 2
r ₁ = 100 mm (= diameter), 2t ₃ = (t ₁ + t ₂ ).
= 0.2 mm (= total thickness), (v ₁ / v ₂ ) = (100 / 100.2), which means that the web B is 0.2% faster than the web A after separation. I see.

After all, the weaker web B is stretched at the first nip point by changing the path line for feeding the bonded web W ₁ at the first nip point to a position above the tangent line at the nip point. Along with the master roller 4, it is fed faster than the stronger web A under a certain tension, and the elongation of the weaker web B is absorbed by the difference in speed between the two webs A and B, and the slack is prevented from occurring. Will be.

Contrary to the above, when the web A is made of a material that is weak and easily stretched and the web B is strongly and hardly stretched, the supply side adjusting roller 3 is swung downward and the first nip is made. Laminating web at point W ₁
When the pass line relating to the feeding of the above is deflected to a position below the tangent line at the nip point, the weaker web A is stretched at the first nip point and strong along the first nip roller 5 according to the same theory as described above. It is fed faster than the other web B, and the elongation of the weaker web A is absorbed due to the speed difference between the two webs A and B.

At the adjusting position of the pass line, (v ₁ / v ₂ ) = {r ₃ + t ₂ + (1/2) t ₁ } /
If {r ₃ + (1/2) t ₂ } is satisfied and (1/2) (t ₁ + t ₂ ) = t ₃ is satisfied, the theoretical formula (2) is (v ₁ / v ₂ ) = _{{r 3 + (1/2) t} 2 + t 3} /
It becomes {r ₃ + (1/2) t ₂ }.

The above-mentioned action by adjusting the angle of the pass line relating to the supply of the bonded web W ₁ is represented by the above-mentioned theoretical formula (1),
According to (2), the angle formed by the tangent line of the pass line, that is, the size of the supply angle is irrelevant, but it is limited to the case where each of the webs A and B is a completely elastic body, and It has been confirmed on an actual machine that the action of a material changes infinitely between 0 and ± 20 degrees due to plastic deformation, creep, flow-in, etc. inside the material.

Further, in the above construction, the pull-out side adjusting roller 10 is swung downward, and as shown in FIG. 3, the pass line for pulling out the bonded web W ₂ at the second nip point is set to the nip. If you change the angle below the horizontal tangent line at the point, the same theory as above
The outer web B is faster than the inner web A, and since the master roller 4 and the second nip roller 9 which are in contact with them are both non-driving free rollers, the speed difference between the two webs A and B is reduced. Rotating while keeping the peripheral speed difference according to
The same action as described above occurs. In adjusting the position of the pass line, the radius of the first nip roller 5 in the theoretical formula (1): a r ₁ radius of the second nip roller 9: by replacing the r _2, holds the same theoretical expression also in FIG. 3 I understand. In that case, the web B is drawn into the second nip point faster than the web A while being stretched, and the web A is drawn.
It is pasted together and each part is contracted evenly when it becomes a straight line. On the contrary, the web A is drawn into the second nip point later than the web B with a lower tension and is stretched after being bonded to the web B.

Contrary to the above, in FIG.
When the path line for drawing out the bonded web W ₂ at the nip point is changed to a position above the tangent line at the second nip point, the web A is drawn into the second nip point faster than the web B while being stretched. The opposite effect will occur. It is apparent that the same theoretical formula as the above-mentioned theoretical formula (2) holds at the adjustment position of the pass line.

[0041]

The method for processing a bonded web according to the first aspect of the present invention is configured as described above, and when one of the bonded webs is processed, the two separated webs are processed as in the conventional method. Since it is adjusted not by the tension but by the speed difference, it can be easily applied to various bonded webs according to the combination conditions of the materials of the respective webs constituting it and the range of the elongation strength ratio. At the same time, it is possible to easily prevent, at a low cost, from accumulating the elongation of the web of a material having a small elongation strength after separation and causing the slack of the web at a low cost, thereby obtaining a homogeneous and stable high quality processed laminated web product. You can

Further, since the processing apparatus for the bonded web according to the second aspect is configured as described above, the method for processing the bonded web is extremely simple without relying on a complicated drive mechanism or separation mechanism. The structure enables effective implementation without complicated maintenance work.

According to the processing apparatus of the third aspect,
After the processing, one of the separated webs can be widened in a desired manner by the widening portion after the processing and before the re-bonding. Particularly, in the apparatus according to the fourth aspect, the widened portion including the required spreader bar makes it possible to easily open a desired gap in all slits of the slit-processed web.

According to the processing apparatus of the fifth aspect, the angle of at least one of the pass lines relating to the supply and the withdrawal of the bonded web at the first nip point and the second nip point can be easily adjusted by the displacement of the adjusting roller. be able to. Particularly, in the processing apparatus according to the sixth aspect, the angle of the pass line can be easily adjusted by swinging the adjusting roller to a required position.

[Brief description of drawings]

FIG. 1 is an overall side view of an apparatus for processing a bonded web according to an embodiment of the present invention.

FIG. 2 is a side view of a master roller and a first nip roller in FIG.

FIG. 3 is a side view of a master roller and a second nip roller in FIG.

FIG. 4 is a side view of essential parts in a normal operation state of a processing device for a bonded web according to a conventional technique.

FIG. 5 is a side view of essential parts in an abnormal operating state of the processing apparatus for a bonded web according to the related art shown in FIG.

FIG. 6 is a side view of the essential parts of the processing apparatus for a bonded web according to the related art shown in FIG. 4 in an abnormal operation state.

FIG. 7 is a schematic side view of another bonding web processing apparatus according to the related art.

[Explanation of symbols]

A web B web W ₁ laminating web on the supply side W ₂ laminating web on the draw side 3 supply side adjusting roller (pass line adjusting means) 4 master roller 5 first nip roller 6 slitter (processing part) 7 spreader bar (widening part) ) 9 2nd nip roller 10 Drawer side adjusting roller (pass line adjusting means)

Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location G09F 3/00 D21H 1/06

Claims (6)

[Claims] 1. A master roller is contacted with a first nip roller and a second nip roller to form a first nip point and a second nip point, respectively, and a processing section is provided between the outlet of the first nip point and the second nip point. Is provided, and a long bonded web is continuously supplied to the first nip point, and at the exit of the first nip point, a web on the first nip roller side and a web on the master roller side are separated, and the web on the master roller side is separated. At the same time as guiding to the second nip point, the web on the side of the first nip roller is guided to the processing section and processed, and then guided to the second nip point along the second nip roller, and both webs are reattached at the second nip point. A master roller, a first nip roller, and a second nip roll, which are combined with each other and continuously drawn out as one bonded web at the outlet of the second nip point. Is composed of a non-driving free roller, and at least one of the pass lines for feeding and drawing the bonded web at the first nip point and the second nip point is angle-adjusted with respect to the tangent line at the nip point. A method for processing a laminated web, which is characterized in that 2. A master roller, a first nip roller that contacts the master roller to form a first nip point, a second nip roller that contacts the master roller to form a second nip point, and a first nip point. And a processing section provided between the outlet and the second nip point, and continuously supplies a long bonding web to the first nip point, and at the outlet of the first nip point, a web on the first nip roller side. The master roller side web is separated, the master roller side web is guided to the second nip point along the master roller, and the first nip roller side web is guided to the processing section and processed, and then the second nip roller is processed. Along the direction of the second nip, and the two webs are re-bonded at the second nip point and continuously drawn out as one bonded web at the outlet of the second nip point. In the processing apparatus, the master roller, the first nip roller, and the second nip roller are constituted by non-driving free rollers, and at least one pass line relating to supply and withdrawal of the bonded web at the first nip point and the second nip point is provided. An apparatus for processing a bonded web, comprising a pass line adjusting means for adjusting an angle with respect to a tangent line at the nip point. 3. A first nip roller from a processing section to a second nip roller
The apparatus for processing a laminated web according to claim 2, wherein a widened portion is provided on the web path on the nip roller side. 4. The apparatus for processing a bonded web according to claim 3, wherein the widened portion comprises a spreader bar whose entire overhang position and total or partial curvature can be adjusted. 5. A pass line adjusting means is provided on at least one of an inlet side of the first nip point and an outlet side of the second nip point.
The apparatus for processing a bonded web according to claim 2, further comprising an adjusting roller provided so that the bonded web can be guided and displaced with respect to a tangent line at the nip point. 6. The processing apparatus for a bonded web according to claim 5, wherein the adjusting roller is provided so as to be swingable about an axis parallel to the central axis of the master roller.