WO2011158584A1

WO2011158584A1 - Conveyance device and conveyance method for thin film glass

Info

Publication number: WO2011158584A1
Application number: PCT/JP2011/061158
Authority: WO
Inventors: 直久大谷; 広貴工藤; 英之福本; 間宮　周雄; 伸明高橋
Original assignee: コニカミノルタホールディングス株式会社
Priority date: 2010-06-18
Filing date: 2011-05-16
Publication date: 2011-12-22
Also published as: JPWO2011158584A1

Abstract

The disclosed device and method suppress damage to thin film glass caused by unevenly distributed stress generated in rolled thin film glass. The disclosed conveyance device (1) conveys long length thin film glass (G) along the lengthwise direction thereof via a feed roll (42), and winds the glass into a roll by means of a winding roll (3) which is adjacent to the feed roll (42). The feed roll (42) is arranged such that the length of the thin film glass (G), stretching between the feed roll (42) and the rolled glass wound by the winding roll (3), in the conveyance direction of said thin film glass, is at least 200mm.

Description

Thin film glass conveying apparatus and thin film glass conveying method

The present invention relates to a transport device for thin film glass and a transport method for thin film glass.

In recent years, thin film glass having excellent gas barrier properties and translucency has been suitably used as a substrate material for display devices. This thin glass is a very thin glass having a thickness of 200 μm or less, preferably 30 to 150 μm, and this thin glass has flexibility and can be wound into a roll, for example.

Therefore, as a method for efficiently performing various treatments on the thin film glass by utilizing this flexibility, various thin films on the surface of the thin film glass are conveyed from the feeding shaft to the winding shaft by a roll-to-roll method. Techniques for performing processing have been proposed (see, for example, Patent Documents 1 and 2).

JP 2010-105900 A Japanese Patent Laid-Open No. 8-283401

However, first, since it is difficult to make the thickness distribution of the thin film glass to be conveyed and the tension distribution at the time of winding completely uniform, as shown in FIG. Unwinding due to the above thickness distribution and tension distribution occurs in the wound glass to be taken. Therefore, the thin film glass (winding glass) may be damaged by the stress uneven distribution based on this bias.

Further, as a similar phenomenon, when the above-mentioned stress is unevenly distributed in the original glass wound in a roll shape on the feed shaft, the above-described uneven stress is further increased between the feed shaft and the transport roll immediately thereafter. If a biased tension distribution is generated, the thin film glass fed from the feeding shaft may be damaged.

The first problem of the present invention is to provide a thin-film glass transport device and a thin-film glass transport method capable of suppressing breakage of the thin-film glass caused by uneven stress generated in a roll-shaped thin-film glass. .

Second, although the thin film glass described above is flexible, it is a brittle material in the first place. Therefore, if the thin film glass is continuously passed through a conveying roll having a large holding angle, it is broken by repeated bending. May end up.

The second problem of the present invention is to provide a thin film glass transport device and a thin film glass transport method capable of suppressing the breakage of the thin film glass when passing through the transport roll.

Third, in the step of aligning the width of the thin film glass to a predetermined length, cutting with a laser such as a CO ₂ laser is preferably used. In this cutting step, one main surface of the thin film glass is irradiated with a CO ₂ laser, and the thin film glass is cut by crack propagation utilizing the thermal stress.

In general, the theoretical strength of glass is very high, but the tensile strength substantially obtained is said to be about 1/100 of that. This is because stress concentrates on the so-called micro cracks generated on the glass end face. In order to maintain the strength of the glass, the quality of the edge is particularly important, and the required quality is particularly high when it is actually handled as a long flexible strip. The edge processing requires a cutting technique on the crack propagation side that generates thermal stress and cuts, and a CO ₂ laser having excellent absorption characteristics to glass is used in terms of thermal stress generation. It is publicly known that what has been cut by this cutting technique can minimize the microcracks in the cut cross section and maintain the breaking strength of the cut glass itself. In general, if the thickness is about 200 μm, it is possible to cleave all the film thickness directions (so-called full cut) by a laser irradiation and rapid cooling cutting process.

However, it has been found that the thin film glass cut by the laser generates fine cracks on the laser non-irradiated surface that is not irradiated with the laser. This is because when the crack progressed by the laser becomes faster than the scanning speed of the laser, the back surface (laser non-irradiated surface) side of the thin film glass is overheated, resulting in distortion on this laser non-irradiated surface. It is thought to occur.

Therefore, when the thin film glass cut by the laser is rolled, if the thin film glass is bent largely with the laser non-irradiated surface facing outside, cracks on the laser non-irradiated surface are caused by the tensile stress generated on the curved outer surface due to this bending. There is a high concern that it will progress and damage the thin-film glass.

The third problem of the present invention is a method for transporting thin film glass capable of suppressing breakage during transport of thin film glass caused by laser irradiation (cracks generated on a non-irradiated surface), and transport of thin film glass. Is to provide a device.

The first problem is achieved by the following means 1 to 20.

1. In a thin film glass transporting device that transports a long thin film glass along a longitudinal direction with a transporting roll and winds it in a roll shape with a winding shaft adjacent to the transporting roll,
The transport roll is arranged so that a transport direction length of the thin film glass stretched between the transport roll and the roll-shaped winding glass wound around the winding shaft is 200 mm or more. A thin-film glass conveying device.

2. The transport roll includes the transport roll,
It is arranged so that the length in the transport direction of the thin film glass stretched between the roll-shaped winding glass wound around the winding shaft is 0.5 times or more the width of the thin film glass. 2. The apparatus for transporting thin film glass as described in 1 above.

3. At least one of the transport roll and the winding shaft has a transport direction length of the thin film glass stretched between the transport roll and a roll-shaped winding glass wound on the winding shaft. 3. The apparatus for transporting thin film glass according to 1 or 2, wherein the apparatus is configured to be movable so as to be adjustable.

4). In a thin film glass transporting device that transports a long thin film glass along a longitudinal direction with a transporting roll and winds it in a roll shape with a winding shaft adjacent to the transporting roll,
The transport roller is a transport device for thin film glass, characterized in that a roll portion in contact with the thin film glass is configured to be elastically deformable in a radial direction.

5. In a thin film glass transporting device that transports a long thin film glass along a longitudinal direction with a transporting roll and winds it in a roll shape with a winding shaft adjacent to the transporting roll,
Adjusting means capable of adjusting the distances at both ends in the width direction of the thin film glass between the transport roll and the winding shaft;
Tension detection means capable of detecting each tension in the conveyance direction on both sides in the width direction of the thin film glass passing through the conveyance roll;
Control means for controlling the adjustment means so that the tension difference is less than the predetermined threshold when the tension difference detected by the tension detection means is equal to or greater than a predetermined threshold;
A thin-film glass conveying apparatus comprising:

6). In the thin film glass transporting device that feeds the long thin film glass wound around the feed shaft in a roll shape from the feed shaft along the longitudinal direction, and transports it by the transport roll adjacent to the feed shaft.
The transport roll is arranged so that the transport direction length of the thin film glass stretched between the roll-shaped original roll glass wound around the feeding shaft and the transport roll is 200 mm or more. A thin-film glass conveying device.

7. The conveyance roll has a length in the conveyance direction of the thin film glass stretched between the conveyance roll and a roll-shaped original glass wound around the feeding shaft, which is 0.5 times or more the width of the thin film glass. 7. The apparatus for transporting thin film glass as described in 6 above, characterized in that

8. At least one of the transport roll and the feeding shaft can adjust the transport direction length of the thin film glass stretched between the transport roll and the roll-shaped original winding glass wound around the feeding shaft. As described above, the apparatus for transporting thin film glass according to 6 or 7 is configured to be movable.

9. In the thin film glass transporting device that feeds the long thin film glass wound around the feed shaft in a roll shape from the feed shaft along the longitudinal direction, and transports it by the transport roll adjacent to the feed shaft.
The transport roller is a transport device for thin film glass, characterized in that a roll portion in contact with the thin film glass is configured to be elastically deformable in a radial direction.

10. In the thin film glass transporting device that feeds the long thin film glass wound around the feed shaft in a roll shape from the feed shaft along the longitudinal direction, and transports it by the transport roll adjacent to the feed shaft.
Adjustment means capable of adjusting each distance at both ends in the width direction of the thin-film glass with the transport roll and the feeding shaft;
Tension detection means capable of detecting each tension in the conveyance direction on both sides in the width direction of the thin film glass passing through the conveyance roll;
Control means for controlling the adjustment means so that the tension difference is less than the predetermined threshold when the tension difference detected by the tension detection means is equal to or greater than a predetermined threshold;
A thin-film glass conveying apparatus comprising:

11. In the method of transporting thin film glass, which is transported along a longitudinal direction with a transport roll along a longitudinal direction, and wound into a roll with a winding shaft adjacent to the transport roll,
As said conveyance roll, it arrange | positions so that the conveyance direction length of the said thin film glass stretched between the roll-shaped winding glass wound by the said winding shaft and the said conveyance roll may be 200 mm or more. What is used is a method for transporting thin film glass.

12. As said conveyance roll, the conveyance direction length of the said thin film glass stretched between the said conveyance roll and the roll-shaped winding glass wound up by the said winding shaft is 0.5 of the width | variety of the said thin film glass. 12. The method for transporting thin film glass as described in 11 above, wherein a film disposed so as to be double or more is used.

13. As at least one of the transport roll and the winding shaft, a length in the transport direction of the thin film glass stretched between the transport roll and a roll-shaped winding glass wound around the winding shaft. 13. The method for transporting thin film glass according to 11 or 12 above, wherein one that is movable so as to be adjustable is used.

14 In the method for transporting thin film glass, which is transported along a longitudinal direction with a transport roll along a longitudinal direction, and wound into a roll with a winding shaft adjacent to the transport roll,
A method for transporting thin film glass, characterized in that a roll portion in contact with the thin film glass is configured to be elastically deformable in the radial direction as the transport roll.

15. In the method of transporting thin film glass, which is transported along a longitudinal direction with a transport roll along a longitudinal direction, and wound into a roll with a winding shaft adjacent to the transport roll,
Adjustment means capable of adjusting each distance in the width direction both ends of the thin film glass between the transport roll and the winding shaft, and each of the thin film glass passing through the transport roll in the transport direction on both sides in the width direction. A tension detecting means capable of detecting the tension, and
The thin film glass, wherein when the tension difference between the tensions detected by the tension detection means is equal to or greater than a predetermined threshold, the adjustment means is controlled so that the tension difference is less than the predetermined threshold. Transport method.

16. In the method of transporting thin film glass, which is rolled out from the feed shaft along the longitudinal direction of the long thin film glass wound in a roll shape on the feed shaft, and transported by a transport roll adjacent to the feed shaft,
As said conveyance roll, it arrange | positions so that the conveyance direction length of the said thin film glass stretched between the roll-shaped original winding glass wound by the said delivery axis | shaft and the said conveyance roll may be 200 mm or more. What is used is a method for transporting thin-film glass.

17. As said conveyance roll, the conveyance direction length of the said thin film stretched between the said roll and the roll-shaped original winding glass wound by the said delivery axis | shaft is 0.5 times or more of the width | variety of the said thin film glass 17. The method for transporting thin film glass as described in 16 above, wherein a material arranged so as to be used is used.

18. As at least one of the transport roll and the feeding shaft, the length in the transport direction of the thin film glass stretched between the transport roll and the roll-shaped original glass wound around the feed shaft can be adjusted. The method for transporting thin film glass as described in 16 or 17 above, wherein a material configured to be movable is used.

19. In the method of transporting thin film glass, which is rolled out from the feed shaft along the longitudinal direction of the long thin film glass wound in a roll shape on the feed shaft, and transported by a transport roll adjacent to the feed shaft,
A method for transporting thin film glass, characterized in that a roll portion in contact with the thin film glass is configured to be elastically deformable in the radial direction as the transport roll.

20. In the method of transporting thin film glass, which is rolled out from the feed shaft along the longitudinal direction of the long thin film glass wound in a roll shape on the feed shaft, and transported by a transport roll adjacent to the feed shaft,
Adjusting means capable of adjusting distances between the transport roll and the feeding shaft at both ends in the width direction of the thin film glass, and tensions in the transport direction on both sides in the width direction of the thin film glass passing through the transport roll A tension detecting means capable of detecting
The thin film glass, wherein when the tension difference between the tensions detected by the tension detection means is equal to or greater than a predetermined threshold, the adjustment means is controlled so that the tension difference is less than the predetermined threshold. Transport method.

The second problem is achieved by the following means 21 to 28, and the third problem is achieved by the means 29 to 36.

21. In the thin film glass transport device that transports the long thin film glass with a plurality of transport rolls along the longitudinal direction,
Of the plurality of transport rolls, the transport rolls that come into contact with the thin film glass at a holding angle of 40 degrees or more are continuously arranged in parallel in the transport direction by 4 or less.

22. The thin film according to 21, wherein among the plurality of transport rolls, two or less transport rolls in contact with the thin film glass at a holding angle of 90 degrees or more are continuously arranged in parallel in the transport direction. Glass conveying device.

23. Two transport rolls that are in contact with the thin film glass at a holding angle of 90 degrees or more and that are continuously arranged in the transport direction are the transport direction length of the thin film glass stretched between the two transport rolls. 23. The apparatus for transporting thin film glass according to 21 or 22, wherein the apparatus is arranged so that the length is 100 mm or more.

24. The two transport rolls that are in contact with the thin film glass at a holding angle of 120 degrees or more and that are continuously arranged in the transport direction are the transport direction length of the thin film glass stretched between the two transport rolls. 24. The apparatus for transporting a thin film glass according to any one of 21 to 23, wherein the apparatus is arranged so that the length is 100 mm or more.

25. In the transport method of thin film glass that transports long thin film glass with a plurality of transport rolls along the longitudinal direction,
As the plurality of transport rolls, use is made of the plurality of transport rolls in which the transport rolls that are in contact with the thin film glass at a holding angle of 40 degrees or more are continuously arranged in parallel in the transport direction. A method for conveying thin film glass.

26. As the plurality of transport rolls, use of the plurality of transport rolls in which transport rolls that are in contact with the thin film glass at a holding angle of 90 degrees or more are continuously arranged in parallel in the transport direction. 26. The method for transporting thin film glass as described in 25 above.

27. Each of the thin film glasses stretched between the two transport rolls as two transport rolls that are in contact with the thin film glass at a holding angle of 90 degrees or more and are continuously arranged in the transport direction. 27. The method for transporting thin film glass according to 25 or 26, wherein a film having a thickness of 100 mm or more is used.

28. Each of the thin film glasses that are in contact with the thin film glass at a holding angle of 120 ° or more and that are continuously arranged in parallel in the transport direction are stretched between the two transport rolls in the transport direction length. 28. The method for transporting thin film glass according to any one of 25 to 27 above, wherein a film having a thickness of 100 mm or more is used.

29. In the transport method of thin film glass, which transports a long thin film glass whose both ends in the width direction are cut by laser irradiation along a longitudinal direction with a transport roll,
Conveyance of the thin film glass, wherein the thin film glass is conveyed while contacting a laser non-irradiation surface opposite to the laser irradiation surface irradiated with the laser among both main surfaces of the thin film glass. Method.

30. In the transport method of thin film glass, which transports a long thin film glass whose both ends in the width direction are cut by laser irradiation along a longitudinal direction with a transport roll,
A thin film characterized by using at least one other transport roll that transports the thin film glass while being in contact with a laser irradiation surface irradiated with the laser among both main surfaces of the thin film glass at a holding angle of less than 90 degrees. Glass transport method.

31. In the transport method of thin film glass, which transports a long thin film glass whose both ends in the width direction are cut by laser irradiation along a longitudinal direction with a transport roll,
The thin film glass transported by the transport roll is rolled so that the laser non-irradiation surface opposite to the laser irradiation surface irradiated with the laser is located on the inner peripheral side of both main surfaces of the thin film glass. A method of transporting thin film glass, which is wound up into two pieces.

32. 32. The method for transporting thin film glass according to any one of 29 to 31, wherein the laser is a CO ₂ laser.

33. In the thin film glass transport device that transports the long thin film glass whose both ends in the width direction are cut by the laser irradiation along the longitudinal direction by the transport roll,
The transport roll transports the thin film glass while being in contact with a laser non-irradiated surface opposite to the laser irradiated surface irradiated with the laser among the two main surfaces of the thin film glass. Conveying device.

34. In the thin film glass transport device that transports the long thin film glass whose both ends in the width direction are cut by the laser irradiation along the longitudinal direction by the transport roll,
Comprising at least one other transport roll for transporting the thin film glass in contact with the laser irradiated surface irradiated with the laser among the two main surfaces of the thin film glass;
The said other conveyance roll contacts the said laser irradiation surface of the said thin film glass at the holding angle of less than 90 degree | times, The thin film glass conveying apparatus characterized by the above-mentioned.

35. In the thin film glass transport device that transports the long thin film glass whose both ends in the width direction are cut by the laser irradiation along the longitudinal direction by the transport roll,
A winding shaft for winding the thin film glass conveyed by the conveying roll into a roll;
The winding shaft winds the thin film glass so that the laser non-irradiation surface opposite to the laser irradiation surface irradiated with the laser is located on the inner peripheral side of both main surfaces of the thin film glass. A thin-film glass conveying device.

36. 36. The apparatus for transporting thin film glass according to any one of 33 to 35, wherein the laser is a CO ₂ laser.

According to the inventions described in 1 and 11, since the length of the thin film glass stretched between the roll-shaped winding glass wound around the winding shaft and the conveying roll is 200 mm or more, Even if there is some unbalance in the tension distribution in the width direction of the stretched thin film glass, it can be wound around the roll while relaxing the unbalance in the tension distribution between the rolls. it can. Therefore, it is possible to reduce stress uneven distribution at the time of winding due to an imbalance in the tension distribution of the thin film glass, and consequently, it is possible to suppress damage to the thin film glass due to this stress uneven distribution.

According to invention of said 1,7,12,17, the said conveyance roll is the roll wound by the said conveyance roll, the roll-shaped winding glass wound by the said winding shaft, or the said delivery axis | shaft. The length of the thin film glass stretched between the glass-form original winding glass is arranged so that the length of the thin film glass is 0.5 times or more the width of the thin film glass. Even if there is some unbalance in the tension distribution in the width direction of the thin film glass, it can be wound by the winding shaft while relaxing the unbalance in the tension distribution between the rolls. Therefore, it is possible to reduce stress uneven distribution at the time of winding due to an imbalance in the tension distribution of the thin film glass, and consequently, it is possible to suppress damage to the thin film glass due to this stress uneven distribution.

According to the inventions described in 4, 9, 14, and 19, the roll portion of the transport roll that comes into contact with the thin film glass is configured to be elastically deformable in the radial direction. Can be relaxed. Therefore, it is possible to reduce stress uneven distribution at the time of winding due to an imbalance in the tension distribution of the thin film glass, and consequently, it is possible to suppress damage to the thin film glass due to this stress uneven distribution.

According to the inventions described in 5, 10, 15, and 20, since the tension difference of each tension in the transport direction on both sides in the width direction of the thin film glass is controlled to be less than a predetermined threshold value, The unbalance of the tension distribution in the width direction can be suppressed below a certain level. Therefore, it is possible to reduce stress uneven distribution at the time of winding due to an imbalance in the tension distribution of the thin film glass, and consequently, it is possible to suppress damage to the thin film glass due to this stress uneven distribution.

According to the inventions described in 6 and 16, the length of the thin film glass stretched between the roll-shaped original glass wound on the feeding shaft and the transport roll is 200 mm or more. Even if there is some unbalance in the tension distribution in the width direction of the thin film glass to be laid, it can be transported by the transport roll while relaxing the unbalance in the tension distribution between the rolls. Therefore, even when the original winding glass has stress uneven distribution, the thin film glass can be fed out without further biasing the stress uneven distribution, and consequently, the damage of the thin film glass due to the stress uneven distribution can be suppressed. it can.

According to the inventions described in 21 to 28, even if there is a transport roll that comes into contact with the thin film glass at a large holding angle of 40 degrees or more, the transport roll is continuous only in four or less in the transport direction. Therefore, it is possible to suppress breakage of the thin film glass caused by continuously passing through such a conveying roll having a large holding angle.

According to the inventions described in 29 and 33, since the transport roll transports the thin film glass while being in contact with the laser non-irradiated surface of both main surfaces of the thin film glass, the laser non-irradiated surface is finely irradiated by laser irradiation. Even if a crack has occurred, the thin-film glass is not bent in a direction in which the crack easily develops when passing through the transport roll. Therefore, the progress of cracks can be suppressed, and breakage at the time of transporting the thin film glass caused by laser irradiation can be suppressed.

According to the invention described in 30 or 34 above, even when there is another transport roll that transports the thin film glass while being in contact with the laser irradiation surface of the thin film glass, the other transport roll is less than 90 degrees. Since it is in contact with the laser irradiation surface of the thin film glass at the holding angle, the thin film glass is not excessively bent in a direction in which cracks on the non-laser irradiation surface easily progress when passing through the transport roll. Therefore, the progress of cracks can be suppressed, and breakage at the time of transporting the thin film glass caused by laser irradiation can be suppressed.

According to the inventions described in 31 and 35, the thin film glass is wound up in a roll shape while the laser non-irradiated surface of both the main surfaces of the thin film glass is positioned on the inner peripheral side. Even if a fine crack is generated on the irradiated surface, the thin film glass is not bent in a direction in which the crack is likely to progress during winding. Therefore, the progress of cracks can be suppressed, and breakage at the time of transporting the thin film glass caused by laser irradiation can be suppressed.

It is a figure which shows schematic structure of the conveying apparatus of thin film glass. It is a figure for demonstrating a tension meter and LM guide. It is a figure for demonstrating the structure of a drawing roll and a sending-in roll. It is the figure which showed the tension distribution image of the width | variety by the air blowing type non-contact conveyance means. It is a figure for demonstrating the tension conditions of winding in an Example. It is a figure for demonstrating the bias | inclination of the winding glass in a winding shaft. It is a figure which shows arrangement | positioning of the infeed roll and winding roll which were used in the Example. It is a figure which shows the principal part of the conveying apparatus of thin film glass. It is a figure for demonstrating the conveyance system used in the Example. It is a figure which shows schematic structure of the conveying apparatus of the thin film glass in 1st Embodiment. It is a figure which shows schematic structure of the conveying apparatus of the thin film glass in 2nd Embodiment. It is a figure which shows schematic structure of the conveying apparatus of the thin film glass in another example of embodiment. FIG. 10 is a diagram for explaining a conveyance system used in Example 9; 10 is a graph summarizing the results of Example 9.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a schematic configuration of a thin-film glass transfer device (hereinafter simply referred to as a transfer device) 1 in the embodiments of the invention described in 1 to 20 above.

As shown in this figure, the transport device 1 is a device that coats a functional film on the surface of the thin film glass G while transporting the long thin film glass G in a roll-to-roll manner along the longitudinal direction. . Specifically, the transport device 1 includes a feed roll (feed shaft) 2, a take-up roll (winding shaft) 3, a plurality of transport rolls 4,. In the process where the glass G is unwound from the unwinding roll 2 and conveyed by the conveying rolls 4,... Has been.

Of the transport rolls 4..., The one adjacent to the feeding roll 2 is a drawing roll 41. In this drawing roll 41, the length of the thin film glass G stretched between the drawing roll 41 and the roll-shaped thin film glass G (original winding glass) wound around the feeding roll 2 is 200 mm or more. It is arranged like this. At this time, the drawing roll 41 is arranged so that the length in the conveyance direction of the thin film glass G stretched between the drawing roll 41 and the original glass is 0.5 times or more the width of the thin film glass G. More preferably, it is provided.

Further, among the transport rolls 4,..., The one adjacent to the take-up roll 3 is a feed roll 42. The feed roll 42 is a thin film glass stretched between a roll-shaped thin film glass G (winding glass) wound around the take-up roll 3 and the feed roll 42 in the same manner as the drawing roll 41. G is disposed so that the length in the conveyance direction is 200 mm or more. At this time, the feeding roll 42 has a length in the conveying direction of the thin film glass G stretched between the feeding roll 42 and the take-up glass to be 0.5 times or more the width of the thin film glass G. It is more preferable that they are disposed on the surface.

These drawing rolls 41 and feeding rolls 42 are provided with tensiometers 61 capable of detecting respective tensions in the conveying direction on both sides in the width direction of the thin film glass G passing through the drawing roll 41 or the feeding roll 42. It has been. As shown in FIGS. 2A and 2B, the tensiometer 61 is provided in a portion that pivotally supports both ends of the drawing roll 41 and the feeding roll 42 in the width direction, and transports the thin film glass G by an internal strain gauge. It is comprised so that direction tension can be detected.

Further, each of the drawing roll 41 and the feeding roll 42 is provided with a linear motion guide (hereinafter referred to as LM guide) 71 capable of moving the drawing roll 41 or the feeding roll 42 in the transport direction. The LM guide 71 supports one of the shaft support portions at both ends of the drawing roll 41 and the feeding roll 42 so as to be movable along the conveying direction. With such an LM guide 71, it becomes possible to adjust each distance in the width direction both ends of the thin film G of the drawing roll 41 and the feeding roll 2, and the thin film glass G of the feeding roll 42 and the winding roll 3 The respective distances at both ends in the width direction can be adjusted. At the same time, the LM guide 71 is capable of adjusting the length in the conveyance direction of the thin film glass G stretched between the drawing roll 41 and the original winding glass, and between the feeding roll 42 and the winding glass. The conveyance direction length of the thin film glass G to be stretched can be adjusted.

Further, the drawing roll 41 and the feeding roll 42 are configured such that the roll portion in contact with the thin film glass G can be elastically deformed in the radial direction. As such a drawing roll 41 and a feeding roll 42, for example, a rubber roll using a highly elastic rubber for the roll portion may be used. However, in this case, since the slipperiness with respect to the thin film glass G is deteriorated, there is a concern about an increase in the contact stress of the thin film glass G due to this. Therefore, as shown in FIG. 3 (cross-sectional view), a roll having a highly elastic body and having a coating (for example, fluorine-based resin) with good slipperiness on the outer surface in contact with the thin film glass G is used. Is preferred.

The transport apparatus 1 includes a control unit 10. The control unit 10 is connected to a drive motor 21 and a drive motor 31 that drive the feed roll 2 and the take-up roll 3, and controls the drive motor 21 and the drive motor 31 to control the feed roll 2 and the take-up roll 3. Can be rotated at a predetermined speed. The control unit 10 is connected to each tension meter 61 and each LM guide 71. And, in each of the drawing roll 41 and the feeding roll 42, the control unit 10 has a tension difference of each tension on both sides in the width direction of the thin film glass G detected by the tension meter 61, when a predetermined threshold value or more is reached. The LM guide 71 is controlled so that the tension difference is less than a predetermined threshold.

The thin film glass G transported by the transport apparatus 1 is not particularly limited, but is a very thin glass having a thickness of 200 μm or less, preferably 30 to 150 μm.

As described above, the length in the transport direction of the thin film glass G stretched between the roll-shaped winding glass wound around the winding roll 3 and the feeding roll 42 is 200 mm or more. Even if there is some imbalance in the tension distribution in the width direction of the thin film glass G to be wound, it can be wound by the winding roll 3 while relaxing the unbalance of the tension distribution between the rolls. . Therefore, the stress uneven distribution at the time of winding due to the unbalanced tension distribution of the thin film glass G can be reduced, and consequently, the damage of the thin film glass G due to the stress uneven distribution can be suppressed.

Moreover, since the conveyance direction length of the thin film glass G stretched between the roll-shaped original roll glass wound around the supply roll 2 and the drawing roll 41 is 200 mm or more, the thin film glass G stretched Even if there is a slight unbalance in the tension distribution in the width direction, the tension distribution unbalance can be relaxed between the rolls and conveyed by the drawing roll 41. Therefore, even when the original winding glass has stress uneven distribution, the thin film glass G can be fed out without further biasing the stress uneven distribution, and consequently, the breakage of the thin film glass G due to the stress uneven distribution is suppressed. be able to.

Moreover, since the roll part which contacts the thin film glass G is comprised so that elastic deformation | transformation can be carried out to radial direction, the drawing roll 41 and the feeding roll 42 are stretched over the said drawing roll 41 or the feeding roll 42. The imbalance in the tension distribution of the thin film glass G can be further relaxed.

Further, in each of the drawing roll 41 and the feeding roll 42, when the tension difference between the tensions on both sides in the width direction of the thin film glass G detected by the tension meter 61 is equal to or greater than a predetermined threshold, the tension difference is predetermined. Since the LM guide 71 is controlled so as to be less than the threshold value, it is possible to further alleviate the unbalance of the tension distribution of the thin film glass G stretched over the drawing roll 41 or the feeding roll 42.

The embodiments to which the inventions described in the above 1 to 20 can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the gist of the present invention.

For example, in the above embodiment, the LM guide 71 is provided on the drawing roll 41 and the feeding roll 42, but may be provided on the feeding roll 2 and the winding roll 3, or the feeding roll 2 and the winding roll. 3 may be provided only. In addition, the LM guide 71 is provided only at one end side in each of the drawing roll 41 and the feeding roll 42, but may be provided at both ends.

Further, the take-up roll 3 may take up the thin film glass G while sandwiching the slip sheet. By using the slip sheet having elasticity in the thickness direction, it is possible to further improve the above-described damage suppression effect of the thin film glass G.

In addition, although tension meters 61 are provided at both ends of each of the drawing roll 41 and the feeding roll 42, air is blown out as shown in FIG. 4 as means capable of measuring the tension distribution in the width direction in more detail. Thus, a drawing roll 41A and a feeding roll 42A that can convey the thin film glass G in a non-contact manner can be used. Specifically, the tension distribution in the width direction of the thin film glass G is measured in detail by measuring the pressure (back pressure) generated between the surface of the drawing roll 41A (feeding roll 42A) and the thin film glass G. Can do. As such a drawing roll 41A and a feeding roll 42A, for example, those described in JP-A-1-209256 and Japanese Patent No. 2597129 can be used. Of course, it is preferable to apply the tension distribution measurement by this method to the transport rolls 4 other than the drawing roll 41 and the feed roll 42 and to make the tension distribution uniform in these transport rolls 4. .

Further, a distance adjusting mechanism that can always ensure a minimum distance of 200 mm or more between the winding glass and the feeding roll 42 regardless of the winding diameter of the winding glass may be used. It goes without saying that the effect of the present invention described above can be obtained by setting the shortest distance between the take-up glass and the feeding roll 42 (the shortest distance between both surfaces) to 200 mm or more. A similar mechanism may be applied to the feeding side.

In the following Examples 1 to 6, the present invention will be described more specifically.

Hereinafter, embodiments of the invention described in 21 to 28 will be described with reference to the drawings.

FIG. 8 is a diagram showing a main part of a thin film glass transfer device (hereinafter simply referred to as a transfer device) 1a according to the present embodiment.

As shown in this figure, the transport apparatus 1a includes a plurality of transport rolls 4,..., And rolls the long thin film glass G by the transport rolls 4,. On the other hand, it is an apparatus for coating a functional film on the surface of the thin-film glass G. Specifically, the conveying device 1a includes a feeding roll, a take-up roll, and a coating processing unit (all not shown) in addition to the conveying rolls 4,..., And feeds the thin film glass G from the feeding roll. In the process of winding with the winding roll while being transported by the transport rolls 4,..., The functional film is coated on the surface of the thin film glass G by the coating processing unit.

The thin film glass G transported by the transport apparatus 1a is not particularly limited, but is a very thin glass having a thickness of 200 μm or less, preferably 30 to 150 μm.

The transport rolls 4,... Are arranged side by side so that only four or less of the transport rolls 4,... Contacting the thin film glass G at a holding angle θ of 40 degrees or more continue in the transport direction. That is, only four transport rolls 4 having a holding angle θ of 40 degrees or more are continuous in the transport direction. Here, the holding angle θ is a central angle of an arc portion in contact with the thin film glass G on the peripheral surface of the transport roll 4.

However, when there is a transport roll 4 that contacts the thin film glass G at a holding angle θ of 90 degrees or more among the transport rolls 4,..., The transport rolls 4 are arranged so that only two or less continue in the transport direction. It is preferable to be provided. That is, it is preferable that only two transport rolls 4 having a holding angle θ of 90 degrees or more are continuous in the transport direction.

Further, of the transport rolls 4,..., The two transport rolls 4 that are in contact with the thin film glass G at a holding angle θ of 90 degrees or more and are continuously arranged in the transport direction are the two transport rolls 4. The thin film glass G stretched between them is arranged so that the length in the conveyance direction (the path length between the two conveyance rolls 4) is 100 mm or more.

However, when there are two transport rolls 4 that are in contact with the thin-film glass G at a holding angle θ of 120 degrees or more and are continuously arranged in the transport direction among the transport rolls 4. It is preferable that the one conveyance roll 4 is arrange | positioned so that the conveyance direction length of the thin film glass G stretched between the two conveyance rolls 4 may be 100 mm or more.

As described above, even if there is a transport roll 4 in contact with the thin film glass G at a large holding angle θ of 40 degrees or more, the transport roll 4 is continuous only in four or less in the transport direction. It is possible to suppress breakage of the thin film glass G caused by continuously passing through the conveying roll 4 having such a large holding angle θ.

It should be noted that the embodiments to which the inventions described in 21 to 28 can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention.

For example, although not particularly limited in the above embodiment, the outer diameter of the transport roll 4 is preferably 100 mm or more. If the outer diameter of the transport roll 4 is 100 mm or more, the influence of the bending at the transport roll 4 on the breakage of the thin film glass G can be discussed only by the size of the holding angle θ of the transport roll 4. .

In addition, in order to further stabilize the conveyance of the thin film glass G, a tension detection unit capable of detecting the tension in the conveyance direction of the thin film glass G is provided, and when the tension detection unit detects a predetermined tension, It is preferable that the conveyance of the thin film glass G is prevented in advance by stopping the conveyance or adjusting the position of the conveyance roll 4. Further, it is more preferable that the tension detecting means can detect a tension difference at both ends in the width direction of the thin film glass G. As such tension detecting means, a conventionally known one, for example, one using a strain gauge provided on the supporting means of the transport roll 4 can be used.

These inventions will be described more specifically by Example 7 described later.

Next, embodiments of the invention described in 29 to 36 will be described with reference to the drawings.
[First Embodiment]
First, a first embodiment of the invention described in 29-36 will be described.

FIG. 10 is a diagram showing a schematic configuration of a thin film glass transfer device (hereinafter simply referred to as a transfer device) 1b in the first embodiment.

As shown in this figure, the transport device 1b is a device that coats a functional film on the surface of the thin film glass G while transporting the long thin film glass G in a roll-to-roll manner along the longitudinal direction. . Specifically, the conveying device 1b includes a feeding roll 2, a winding roll (winding shaft) 3, a plurality of conveying rolls 4,... In the process of taking out from the roll 2 and transporting it by the transport rolls 4,...

The thin film glass G transported by the transport apparatus 1b is not particularly limited, but is a very thin glass having a thickness of 200 μm or less, preferably 30 to 150 μm. Further, the thin film glass G is cut at both ends in the width direction in advance by laser irradiation, and as shown in the enlarged view of FIG. 10, one of both main surfaces is irradiated with laser at the time of cutting. a, and the other is a laser non-irradiated surface b that is not irradiated with a laser. Incidentally, the laser used for cutting the thin glass G is in the present embodiment is a CO ₂ laser.

The plurality of transport rolls 4 are arranged so as to transport the thin film glass G while in contact with the laser non-irradiated surface b of both main surfaces of the thin film glass G.

The winding roll 3 winds the thin-film glass G transported by the transport rolls 4... So that the laser non-irradiated surface b is located on the inner peripheral side.

As described above, since the transport roll 4 transports the thin film glass G while being in contact with the laser non-irradiated surface b of both main surfaces of the thin film glass G, fine cracks are formed on the laser non-irradiated surface b by laser irradiation. Even when this occurs, the thin-film glass G is not bent in a direction in which the crack easily develops when passing through the transport roll 4. Therefore, the progress of cracks can be suppressed, and the breakage of the thin film glass G due to laser irradiation can be suppressed.

Moreover, since the winding roll 3 winds the thin film glass G while the laser non-irradiated surface b is positioned on the inner peripheral side, even if a fine crack is generated on the laser non-irradiated surface b due to laser irradiation. In addition, the thin film glass G is not bent in a direction in which the crack easily develops during winding. Therefore, the progress of cracks can be suppressed, and the damage at the time of winding the thin film glass G caused by laser irradiation can be suppressed.
[Second Embodiment]
Subsequently, a second embodiment of the invention described in 29 to 36 will be described. In addition, the same code | symbol is attached | subjected to the component similar to the said 1st Embodiment, and the description is abbreviate | omitted.

FIG. 11 is a diagram illustrating a schematic configuration of the transfer apparatus 1A according to the second embodiment.

As shown in this figure, the conveying device 1A includes a reverse bending roll 41 that is different from the other conveying rolls 4 in the direction in which the thin film glass G is bent, among the plurality of conveying rolls 4,. That is, unlike the other conveyance rolls 4, the reverse bending roll 41 conveys the thin film glass G while being in contact with the laser irradiation surface a of the thin film glass G. Moreover, this reverse bending roll 41 is arrange | positioned so that the laser irradiation surface a of the thin film glass G may contact with the holding angle (theta) of less than 90 degree | times. Here, the holding angle θ is a central angle of an arc portion in contact with the thin film glass G in the peripheral surface of the reverse bending roll 41 (conveying roll 4).

As described above, even when there is the reverse bending roll 41 that conveys the thin film glass G while being in contact with the laser irradiation surface a of the thin film glass G, the reverse bending roll 41 has a holding angle θ of less than 90 degrees. Since the thin film glass G is in contact with the laser irradiation surface a of the thin film G, the thin film glass G is not excessively bent in a direction in which cracks on the laser non-irradiation surface b easily progress when passing through the reverse bending roll 41. Therefore, the progress of cracks can be suppressed, and the breakage of the thin film glass G due to laser irradiation can be suppressed.

The embodiments to which the inventions described in 29 to 36 are applicable are not limited to the above-described embodiments, and can be appropriately changed without departing from the gist of the present invention.

For example, in the above-described embodiment, both ends in the width direction of the thin film glass G are preliminarily cut with a laser, but a cutting process with a laser may be incorporated in the line as shown in FIG. Specifically, the transport device 1B includes a laser oscillation unit 81 and a cooling unit 82 disposed in the vicinity of the transport roll 4, and an end material removing unit 83 and an end material disposed in the vicinity of the transport roll 4 downstream thereof. One collection unit 84 is provided at each end of the thin film glass G in the width direction.

In this transport apparatus 1B, a laser (for example, CO2 laser) is irradiated by the laser oscillation unit 81 while being cooled by the cooling unit 82 while transporting the thin film G, and a predetermined depth is formed at both ends in the width direction of the thin film glass G. The notch is continuously formed. Then, on the downstream side, the end material c of the thin film glass G that is closer to the end than the notch is separated from the thin film glass G by the end material removing unit 83 and accommodated in the end material collecting unit 84.

Moreover, in the conveying apparatus 1B, the resin film F1 as what is called a slip sheet is inserted | pinched between the original winding glass drawn | fed out from the supply roll 2, and the interleaf winding roll 71 for winding up this resin film F1 is the supply roll 2 It is provided in the vicinity. Similarly, an interleaf feeding roll 72 for feeding out the resin film F2 as interleaving paper is also provided in the vicinity of the winding roll 3, and the winding roll 3 is configured to wind up the thin film glass G while sandwiching the resin film F2. Has been.

Further, the outer diameter of the transport roll 4 is not particularly limited, but is preferably 100 mm or more in terms of suppressing breakage of the thin film glass G.

These inventions will be described more specifically with Examples 8 and 9 described later.

Hereinafter, the inventions described in 21 to 28 will be described more specifically by giving Examples 1 to 6. However, the present invention is not limited to this example.

<Example 1>
In Example 1, the damage (break) state of the thin film glass G (winding glass) when winding with a winding roll was confirmed.
<Thin glass>
As the thin-film glass G, borosilicate glass having been cut in advance in the width direction with a CO ₂ laser was used. The thickness and width of the thin film glass G are shown in Table 1 together with the results.
<Conveying conditions>
In the apparatus of FIG. 1, the arrangement of the feed roll 42 and the take-up roll 3 is transported by the feed roll 42 'as shown in FIG. 7 and wound by the adjacent take-up rolls 3 (each roll diameter is 200 mm). The test was conducted after changing to. As the thin film glass is wound, the length of the thin film glass stretched decreases, and the roll glass wound around the take-up roll and the feed roll 42 'are stretched between the roll glass and the feed roll 42'. The conveyance direction length L of the thin film glass becomes shorter (decreases), and breaks when it becomes equal to or less than a certain length. The relationship between L and breakage was observed where the breakage occurred.

The conveyance experiment was performed 150 times for each thin film glass, and observed where (L) the fracture occurred when winding.

The feeding roll 42 ′ was a flat type (made of a uniform outer diameter over the entire width of the thin film glass G) made of vinyl chloride. The conveyance speed was constant at 5 m / min. The winding conditions were set as follows depending on the glass width.

Glass width 300 mm: initial tension 40 N / width, taper: 40%
Glass width 400 mm: Initial tension 50 N / width, taper: 40%
Glass width 600 mm: initial tension 60 N / width, taper: 40%
Glass width 800 mm: initial tension 85 N / width, taper: 40%
As shown in FIG. 5, the “taper” shown in the winding condition means that the conveying direction tension acting on the thin film glass G is reduced linearly during winding. The value "" means to what percentage of the initial tension the conveyance direction tension at the completion of winding is reduced.

For each thin film glass, when the length L of the thin film glass stretched between the roll-shaped winding glass wound around the winding roll and the feeding roll 42 ′ is changed, For each thin film glass, the breakage rate at each stage of the length L in the transport direction was calculated from 150 tests.

○: Damage rate is 0%
Δ: Breakage rate greater than 0% and less than 5% ×: Breakage rate of 5% or more and less than 100% XX: Breakage rate of 100% or more Note that the longest thin film glass length at break in the test is added to the table.
<Result>
The results are shown in Table 1.

<Summary>
From Table 1, it can be seen from the failure rate at which length the breakage occurs when the breakage is shortened at the winding stage when viewed as “the length L of the stretched thin film glass at the time of breakage”. .

A failure rate of less than 5% was accepted. For this purpose, it is understood that “the length L of the stretched thin film glass at the time of breaking” should be at least 200 mm. Further, since the value obtained by dividing the value of “the distance between the inner surface of the feeding roll and the surface of the take-up glass” by the width of the thin film glass G is approximately 0.5, the distance is 0.5 times the width of the thin film glass G. It is preferable to have the above (breakage rate is 0%).

<Example 2>
In Example 2, the damage (rupture) state of the thin film glass G (winding glass) when the one shown in FIG. 3 was used as the feeding roll 42 ′ was confirmed.
<Evaluation conditions>
As the feed roll 42 ', a 40 mm thick rubber (hardness: JIS A 40 degrees) is attached around the main shaft, and the outer surface is covered with a fluorine-based heat-shrinkable tube, and then the surface is surface roughness Ra1. Polished to 0.0 μm (JIS B 0601-1994) was used. The thin film glass G and the transport conditions were the same as those in Example 1, and the transport speed was constant at 5 m / min.
<Results and summary>
The results are shown in Table 2. When Table 2 is compared with Table 1, it can be seen that by using a double-structured roll as shown in 3 as the feed roll 42 ′, damage to the thin film glass G (winding glass) can be suppressed.

<Example 3>
In Example 3, the feeding roll 42 ′ is provided with the LM guide 71 as shown in FIG. 2, and the tension gauge 61 measures each tension at both ends in the width direction of the thin film glass G, and the tension difference between the tensions. , The alignment of the feed roll 42 was adjusted by the LM guide 71. And the failure | damage (breaking | breaking) condition of the thin film glass G (winding glass) at this time was confirmed.
<Evaluation conditions>
The feeding roll 42 and the thin film glass G and the conveying conditions were the same as those in Example 1, and the conveying speed was constant at 5 m / min. Regarding the tension value, since there is a variation due to conveyance, a moving average processing value every 10 seconds was used. The tension difference at both ends in the width direction was set to a value that can be controlled at 20N. Further, the tension setting for setting the predetermined winding condition for each thin film glass was controlled by the drive motor 31.
<Results and summary>
The results are shown in Table 3. Comparing Table 3 with Table 1, it can be seen that the diameter of the wound glass that can be wound without breakage can be increased by performing alignment adjustment control based on the tension difference.

<Example 4>
In Example 4, the state of damage (breaking) of the thin film glass G when the film was fed from the original winding roll was confirmed.

That is, in the apparatus of FIG. 1, the damage state of the unrolled glass immediately after feeding was confirmed when the length of the stretched thin film glass was changed by changing the position of the drawing roll 41. The length of the stretched thin film glass was implemented in 6 stages shown in the table. In addition, the test was performed 150 times for each length, and the breakage rate was evaluated in the same manner as in Example 1.
<Evaluation conditions>
The thin film glass G was the same as in Example 1 above. The original roll glass was obtained by winding the thin film glass G up to an outer diameter of 400 mm without using a slip sheet. The drawing roll 41 was a flat (made with a uniform outer diameter across the entire width of the thin film glass G) vinyl chloride roll. Moreover, the conveyance speed was fixed at 5 m / min, and the tension of the thin film glass G during feeding was 70 N / width.
<Results and summary>
The results are shown in Table 4. From this table, it can be seen that by taking a length L of the thin film glass stretched between the draw roll 41 and the original roll glass roll of 200 mm or more, breakage immediately after the thin film glass G is fed out can be suppressed.

<Example 5>
In Example 5, in the same manner as in Example 4, the damage (break) state of the thin film glass G (winding glass) when using the drawing roll 41 shown in FIG. 3 was confirmed.
<Evaluation conditions>
As the drawing roll 41, the one used as the feeding roll 42 in Example 2 was used. The thin film glass G was the same as in Example 1 above. Moreover, the conveyance speed was fixed at 5 m / min, and the tension of the thin film glass G during feeding was 70 N / width.
<Results and summary>
The results are shown in Table 5. When Table 5 is compared with Table 4, it can be seen that by using a double structure roll as shown in FIG. 3 as the drawing roll 41, the distance between the drawing roll 41 and the original glass can be shortened without breaking.

<Example 6>
In Example 6, in the same manner as in Example 4, except that the alignment adjustment control similar to that in Example 3 was performed on the drawing roll 41, the damage (rupture) state of the thin film glass G immediately after feeding was confirmed. did.
<Evaluation conditions>
The evaluation conditions were the same as in Example 3 above.
<Results and summary>
The results are shown in Table 6. Comparing Table 6 with Table 4, it can be seen that by performing alignment adjustment control based on the tension difference of the thin film glass G with respect to the drawing roll 41, the distance between the drawing roll 41 and the original glass can be shortened without breaking.

Hereinafter, the invention described in 21 to 28 will be described more specifically by giving Example 7. However, the present invention is not limited to this example.

<Example 7>
In this embodiment, as shown in FIG. 9, in the transport system for transporting the thin film glass G by the six transport rolls 4 (hereinafter referred to as the first roll 4a to the sixth roll 4f from the upstream side), these transport rolls. The breaking state of the thin film glass G when the holding angle θ1 to θ5 of 4 and the spans L1 to L5 between rolls were changed was confirmed. Here, the span between rolls is the length in the transport direction of the thin film glass G stretched between the transport rolls 4. The holding angle θ6 on the transport roll 4f was approximately 38 degrees.
<Thin glass>
As the thin glass G, a glass resin having a polyester resin film connected to the front end in the longitudinal direction was used, and the glass portion passed through each transport roll 4 after the film portion was in a stable transport state. Further, as the thin film glass G, a borosilicate glass having a width of 400 mm, in which both ends in the width direction have been cut in advance with a CO ₂ laser, was used. The thickness and the conveyance direction tension of the thin film glass G are shown in Tables 1 to 3 together with the results.
<Conveying conditions>
All the transport rolls 4 are made of vinyl chloride, and the value obtained by dividing the “difference between the axial distances of both ends in the width direction” of the adjacent rolls by the “average axial distance” is 0.001 (0. 1%) until centering or less. Moreover, the conveyance speed was made constant at 5 m / min, and the thin film glass G was conveyed for 25 m (for 5 minutes) for each test to confirm the presence or absence of breakage.
<Result>
Table 7 shows the results when the holding angles θ1 to θ5 of each transport roll 4 are changed around 40 degrees, Table 8 shows the results when the holding angles θ1 to θ5 are changed around 120 degrees, and Table 120 shows the results when changed around 120 degrees Table 9 shows the results.

<Summary>
From the results in Table 7, it can be seen that the thin film glass G tends to break when five transport rolls 4 having a holding angle θ of 40 degrees or more are continuous. Moreover, it can be said that the influence which the outer diameter of the conveyance roll 4 and the span L between rolls have on the fracture | rupture of the thin film glass G is not so large.

From the results of Table 8, it can be seen that when three transport rolls 4 having a holding angle θ of 90 degrees or more are continued, the thin film glass G is easily broken. Further, even when only two transport rolls 4 having a holding angle θ of 90 degrees or more are continuous, if the span L between the rolls between the two transport rolls 4 is less than 100 mm, the thin film glass G It turns out that it becomes easy to fracture. About the outer diameter of the conveyance roll 4, if it is 100 mm or more, it can be said that it is safe, and if it is less than 100 mm, it can be said that it is so preferable that it is large.

From the results of Table 9, when there is a transport roll 4 having a holding angle θ of 120 degrees or more, even when only two transport rolls are continuous, the span between rolls between the two transport rolls 4 It turns out that it becomes easy to fracture | rupture the thin film glass G as L is less than 100 mm.

Next, the inventions described in 29 to 36 will be more specifically described by Examples 8 to 9. However, the present invention is not limited to this example.

<Example 8>
In Example 8, when the thin film glass G was taken up by the take-up roll 3, when the surface to be wound on the inner peripheral side was changed between the laser irradiation surface a and the laser non-irradiation surface b, the thin film glass G was full length. It was confirmed whether or not it could be wound up without breakage (breakage). (This corresponds to the apparatus shown in FIG. 10, but the winding process was not performed, and the winding test was performed. In the figure, the interleaf winding roll in the vicinity of the feeding roll as shown in FIG. (The slip sheet feeding roll near the roll is omitted.)
<Thin glass>
As the thin-film glass G, borosilicate glass having a total length of 200 m, which had been cut in both ends in the width direction with a CO ₂ laser, was used. The thickness and width of the thin film glass G are shown in Table 1 together with the results.
<Conveying conditions>
The winding speed of the thin film glass G was constant at 5 m / min. Moreover, the outer diameter of the winding roller 3 (core) was 200 mm, and a slip sheet was used for winding. Other conditions are shown in Table 10 together with the results.
<Result>
The results are shown in Table 10. The “taper” shown in the winding conditions in the table means that the conveying direction tension acting on the thin film glass G is linearly reduced during winding, and the value in this “taper” column Means to what percentage of initial tension the conveyance direction tension at the completion of winding is reduced. Strictly speaking, this value is the rate of change in tension with respect to the change in the winding diameter. In Example 8, the winding diameter of 200 to 400 mm was set to 0 to 100% (how much was reduced when the diameter was 200 to 400 mm). Further, “end face edge stability” in the table is an evaluation of the state of both end faces in the width direction of the wound thin film glass G, and each symbol in this column indicates the following contents.

Also, as for the winding result, those that were wound without breaking were indicated by ○.

◎: The core end and both end faces of the take-up roll are almost aligned.

◯: The deviation of both end faces with respect to the core end of the winding roll is in the range of 0.5 to 1.0 mm.

(Triangle | delta): The shift | offset | difference of the both end surfaces with respect to the core end of a winding roll is 1.0 mm or more.
<Summary>
From the results of Table 10, it can be seen that the thin film glass G is wound while the laser non-irradiated surface b is positioned on the inner peripheral side, so that the damage at the time of winding the thin film glass G can be suppressed.

<Example 9>
In Example 9, as shown in FIG. 13, in a transport system including three transport rolls 4,... (Hereinafter referred to as first roll 4a to third roll 4c) whose holding angles θ1 to θ3 can be changed, Under the conditions described above, the state of breakage (breaking) of the thin film glass G when the holding angle θ1 to θ3 of the thin film glass in each roll was changed was confirmed. Moreover, the thin film glass surface which contacts the 3rd roll 4c was also changed.
<Thin glass>
As the thin glass G, a glass resin having a polyester resin film connected to the front end in the longitudinal direction was used, and the glass portion passed through each transport roll 4 after the film portion was in a stable transport state. Further, as the thin film glass G, borosilicate glass having been cut in advance in the width direction with a CO ₂ laser was used. In addition, the thickness and width of the thin film glass G are shown in Table 11 together with the results.
<Conveying conditions>
The winding speed of the thin film glass G was constant at 5 m / min. And the thin film glass G was conveyed 25m (for 5 minutes) for every test, and the presence or absence of the damage was confirmed. Other conditions are shown in Table 11 together with the results.
<Result>
The results are shown in Table 11. In the table, the symbols in the “presence / absence of breakage” column respectively indicate the following contents.

○: No damage was found in the thin film glass.

Δ: The thin film was damaged after passing through the transport roll 4.

X: The thin film glass was damaged immediately after passing through the transport roll 4.
<Summary>
FIG. 14 shows a summary of the relationship between the holding angle θ3 and the damage occurrence rate based on the results in Table 11. From this figure, even when the laser irradiation surface a of the thin film glass G is brought into contact with the transport roll 4 (reverse bending roll 41), the holding angle θ of the transport roll 4 (reverse bending roll 41) is less than 90 degrees. By doing, it turns out that the breakage at the time of conveyance of thin film glass G can be controlled suitably.

1, 1a, 1b, 1A, 1B Conveying device 2 Feeding roll (feeding shaft)
3 Winding roll (winding shaft)
4 Transport rolls 41a Reverse bending roll (other transport rolls)
41, 41A Pulling roll (conveying roll)
42,42A Feeding roll (conveying roll)
5 Coating processing part 10 Control part (control means)
21 drive motor 31 drive motor 61 tension meter (tension detection means)
71 LM guide (adjustment means)
G thin film glass θ holding angle 71 interleaf take-up roll 72 interleaf feed roll 81 laser oscillation part 82 cooling part 83 scrap removal part 84 scrap recovery part F1 resin film F2 resin film a laser irradiation surface b laser non-irradiation surface c edge Material

Claims

In a thin film glass transporting device that transports a long thin film glass along a longitudinal direction with a transporting roll and winds it in a roll shape with a winding shaft adjacent to the transporting roll,
The transport roll is arranged so that a transport direction length of the thin film glass stretched between the transport roll and the roll-shaped winding glass wound around the winding shaft is 200 mm or more. A thin-film glass conveying device.
The transport roll includes the transport roll,
It is arranged so that the length in the transport direction of the thin film glass stretched between the roll-shaped winding glass wound around the winding shaft is 0.5 times or more the width of the thin film glass. The apparatus for transporting thin film glass according to claim 1, wherein:
At least one of the transport roll and the winding shaft has a transport direction length of the thin film glass stretched between the transport roll and a roll-shaped winding glass wound on the winding shaft. It is comprised so that a movement is possible so that adjustment is possible, The conveying apparatus of the thin film glass of Claim 1 or 2 characterized by the above-mentioned.
In a thin film glass transporting device that transports a long thin film glass along a longitudinal direction with a transporting roll and winds it in a roll shape with a winding shaft adjacent to the transporting roll,
The transport roller is a transport device for thin film glass, characterized in that a roll portion in contact with the thin film glass is configured to be elastically deformable in a radial direction.
In a thin film glass transporting device that transports a long thin film glass along a longitudinal direction with a transporting roll and winds it in a roll shape with a winding shaft adjacent to the transporting roll,
Adjusting means capable of adjusting the distances at both ends in the width direction of the thin film glass between the transport roll and the winding shaft;
Tension detection means capable of detecting each tension in the conveyance direction on both sides in the width direction of the thin film glass passing through the conveyance roll;
Control means for controlling the adjustment means so that the tension difference is less than the predetermined threshold when the tension difference detected by the tension detection means is equal to or greater than a predetermined threshold;
A thin-film glass conveying apparatus comprising:
In the thin film glass transporting device that feeds the long thin film glass wound around the feed shaft in a roll shape from the feed shaft along the longitudinal direction, and transports it by the transport roll adjacent to the feed shaft.
The transport roll is arranged so that the transport direction length of the thin film glass stretched between the roll-shaped original roll glass wound around the feeding shaft and the transport roll is 200 mm or more. A thin-film glass conveying device.
The conveyance roll has a length in the conveyance direction of the thin film glass stretched between the conveyance roll and a roll-shaped original glass wound around the feeding shaft, which is 0.5 times or more the width of the thin film glass. It is arrange | positioned so that it may become. The conveyance apparatus of the thin film glass of Claim 6 characterized by the above-mentioned.
At least one of the transport roll and the feeding shaft can adjust the transport direction length of the thin film glass stretched between the transport roll and the roll-shaped original winding glass wound around the feeding shaft. As described above, the apparatus for transporting thin film glass according to claim 6 or 7 is configured to be movable.
In the thin film glass transporting device that feeds the long thin film glass wound around the feed shaft in a roll shape from the feed shaft along the longitudinal direction, and transports it by the transport roll adjacent to the feed shaft.
The transport roller is a transport device for thin film glass, characterized in that a roll portion in contact with the thin film glass is configured to be elastically deformable in a radial direction.
In the thin film glass transporting device that feeds the long thin film glass wound around the feed shaft in a roll shape from the feed shaft along the longitudinal direction, and transports it by the transport roll adjacent to the feed shaft.
Adjustment means capable of adjusting each distance at both ends in the width direction of the thin-film glass with the transport roll and the feeding shaft;
Tension detection means capable of detecting each tension in the conveyance direction on both sides in the width direction of the thin film glass passing through the conveyance roll;
Control means for controlling the adjustment means so that the tension difference is less than the predetermined threshold when the tension difference detected by the tension detection means is equal to or greater than a predetermined threshold;
A thin-film glass conveying apparatus comprising:
In the method of transporting thin film glass, which is transported along a longitudinal direction with a transport roll along a longitudinal direction, and wound into a roll with a winding shaft adjacent to the transport roll,
As said conveyance roll, it arrange | positions so that the conveyance direction length of the said thin film glass stretched between the roll-shaped winding glass wound by the said winding shaft and the said conveyance roll may be 200 mm or more. What is used is a method for transporting thin film glass.
As said conveyance roll, the conveyance direction length of the said thin film glass stretched between the said conveyance roll and the roll-shaped winding glass wound up by the said winding shaft is 0.5 of the width | variety of the said thin film glass. The method for transporting thin film glass according to claim 11, wherein a film disposed so as to be twice or more is used.
As at least one of the transport roll and the winding shaft, a length in the transport direction of the thin film glass stretched between the transport roll and a roll-shaped winding glass wound around the winding shaft. The method for transporting a thin film glass according to claim 11 or 12, wherein a material configured to be movable so as to be adjustable is used.
In the method of transporting thin film glass, which is transported along a longitudinal direction with a transport roll along a longitudinal direction, and wound into a roll with a winding shaft adjacent to the transport roll,
A method for transporting thin film glass, characterized in that a roll portion in contact with the thin film glass is configured to be elastically deformable in the radial direction as the transport roll.
In the method of transporting thin film glass, which is transported along a longitudinal direction with a transport roll along a longitudinal direction, and wound into a roll with a winding shaft adjacent to the transport roll,
Adjustment means capable of adjusting each distance in the width direction both ends of the thin film glass between the transport roll and the winding shaft, and each of the thin film glass passing through the transport roll in the transport direction on both sides in the width direction. A tension detecting means capable of detecting the tension, and
The thin film glass, wherein when the tension difference between the tensions detected by the tension detection means is equal to or greater than a predetermined threshold, the adjustment means is controlled so that the tension difference is less than the predetermined threshold. Transport method.
In the method of transporting thin film glass, which is rolled out from the feed shaft along the longitudinal direction of the long thin film glass wound in a roll shape on the feed shaft, and transported by a transport roll adjacent to the feed shaft,
As said conveyance roll, it arrange | positions so that the conveyance direction length of the said thin film glass stretched between the roll-shaped original winding glass wound by the said delivery axis | shaft and the said conveyance roll may be 200 mm or more. What is used is a method for transporting thin-film glass.
As said conveyance roll, the conveyance direction length of the said thin film stretched between the said roll and the roll-shaped original winding glass wound by the said delivery axis | shaft is 0.5 times or more of the width | variety of the said thin film glass What is arrange | positioned so that it may become is used, The conveyance method of the thin film glass of Claim 16 characterized by the above-mentioned.
As at least one of the transport roll and the feeding shaft, the length in the transport direction of the thin film glass stretched between the transport roll and the roll-shaped original glass wound around the feed shaft can be adjusted. The method of transporting a thin film glass according to claim 16 or 17, wherein a material configured to be movable is used.
In the method of transporting thin film glass, which is rolled out from the feed shaft along the longitudinal direction of the long thin film glass wound in a roll shape on the feed shaft, and transported by a transport roll adjacent to the feed shaft,
A method for transporting thin film glass, characterized in that a roll portion in contact with the thin film glass is configured to be elastically deformable in the radial direction as the transport roll.
In the method of transporting thin film glass, which is rolled out from the feed shaft along the longitudinal direction of the long thin film glass wound in a roll shape on the feed shaft, and transported by a transport roll adjacent to the feed shaft,
Adjusting means capable of adjusting distances between the transport roll and the feeding shaft at both ends in the width direction of the thin film glass, and tensions in the transport direction on both sides in the width direction of the thin film glass passing through the transport roll A tension detecting means capable of detecting
The thin film glass, wherein when the tension difference between the tensions detected by the tension detection means is equal to or greater than a predetermined threshold, the adjustment means is controlled so that the tension difference is less than the predetermined threshold. Transport method.