JP2021147182A - Manufacturing method of glass roll and manufacturing apparatus of glass roll - Google Patents

Abstract

To enable elimination and suppression of deformation such as wrinkle generated at the time of conveying a glass film and accurately wind the glass film into a roll without damaging when the glass film is wound while adjusting the conveying speed of the glass film to manufacture a glass roll.SOLUTION: In obtaining a glass roll G by unwinding a belt-like glass film G with an unwinding unit 2 and winding the unwound glass film G with a winding unit 4, a conveying speed adjustment unit 5 that adjusts a conveying speed when the glass film G unwound by the unwinding unit 2 is conveyed toward the winding unit 4 is provided between the unwinding unit 2 and the winding unit 4. A conveying distance change unit 6 that can change a conveying distance of the glass film G in a width direction of the glass film G is provided between the conveying speed adjustment unit 5 and the winding unit 4.SELECTED DRAWING: Figure 2

Description

The present invention relates to a method for producing a glass roll and an apparatus for producing a glass roll.

The glass roll is manufactured by winding a strip-shaped glass film into a roll shape. While transporting the manufactured strip-shaped glass film, the strip-shaped glass film is subjected to manufacturing-related treatments such as cutting, film formation, surface treatment, and cleaning.

Further, when manufacturing-related processing is performed while transporting as described above, the glass film may be transported in a state of being adsorbed on the belt surface of the belt conveyor in the manufacturing-related processing region or the region before and after the transport direction thereof (for example, patent). See Document 1). Since the glass film can be stably held by using the adsorbable belt conveyor, the transport speed of the glass film can be controlled by the feed speed of the belt conveyor. Therefore, it becomes possible to perform manufacturing-related processing accurately and stably, and thereby it becomes possible to obtain a high-quality glass roll.

JP-A-2018-150131

By the way, when the suctionable belt conveyor as described in Patent Document 1 is provided, in order to accurately wind the glass film at the winding portion without deviation in the width direction, the above is made at a position relatively close to the winding portion. It is conceivable to arrange a belt conveyor so that a sufficient tension can be applied to the glass film supplied to the take-up portion. In this case, the glass film passing on the belt conveyor is in a state of being cut off from the glass film located on the upstream side of the belt conveyor. Therefore, when the glass film that has passed through the belt conveyor is deformed such as wrinkles, the above-mentioned deformations are accumulated and tend to be large as the glass film is continuously conveyed. Further, since the distance from the belt conveyor to the winding portion is short, it is difficult to eliminate the deformation such as wrinkles once generated. Therefore, winding the glass film in this state in a roll shape at the winding portion increases the risk of damage to the glass film.

In view of the above circumstances, the present invention makes it possible to eliminate or suppress deformation such as wrinkles generated during the transportation of the glass film when the glass film is wound to manufacture the glass roll while adjusting the transportation speed of the glass film. The technical problem to be solved is to accurately wind the glass film into a roll without damaging it.

The solution to the above problems is achieved by the method for producing a glass roll according to the present invention. That is, this manufacturing method is a method for manufacturing a glass roll in which a strip-shaped glass film is unwound at the unwinding portion and the unwound glass film is wound at the winding portion to obtain a glass roll. A transport speed adjusting section for adjusting the transport speed when the glass film unwound by the unwinding section is transported toward the winding section is provided between the and the winding section, and the transport speed adjusting section and the winding section are provided. It is characterized by the fact that a transport distance changing portion that can change the transport distance of the glass film in the width direction of the glass film is provided between the take portion. In the present specification, the width direction of the glass film means a direction orthogonal to both the longitudinal direction and the thickness direction of the glass film.

As described above, in the method for manufacturing a glass roll according to the present invention, a transport distance changing portion capable of changing the transport distance of the glass film in the width direction of the glass film is provided between the transport speed adjusting portion and the winding portion. I made it. According to this configuration, the transport distance of the glass film can be made different in the width direction with respect to the glass film reaching the transport distance changing section through the transport speed adjusting section. Therefore, for example, when deformation such as wrinkles occurs on one side of the glass film in the width direction and a tendency to expand is observed, the transport distance on one side in the width direction of the glass film is larger than the transport distance on the other side in the width direction of the glass film. By increasing the size, deformation such as wrinkles on one side in the width direction can be eliminated or suppressed. Therefore, it is possible to prevent a situation in which deformation such as wrinkles is accumulated and becomes huge. Therefore, by winding the glass film in this state, it is possible to prevent damage during winding and stably obtain a high-quality glass roll.

Further, in the method for manufacturing a glass roll according to the present invention, a glass film manufacturing-related processing section may be provided between the unwinding section and the transport speed adjusting section.

According to the method for manufacturing a glass roll according to the present invention, even when the transport speed adjusting portion for the glass film is provided, the glass film is damaged because the deformation such as wrinkles generated during the transport of the glass film can be eliminated or suppressed. It is possible to wind up the film accurately in a roll shape without doing so. By providing the glass film manufacturing-related processing unit between the unwinding unit and the transport speed adjusting unit, the glass film is restrained in the transport speed adjusting unit after the manufacturing-related processing for the glass film, and the glass film is restrained. It is possible to prevent the influence from affecting the manufacturing-related processing unit. As a result, since the transport speed adjusting unit is arranged at a position close to the winding unit, it is possible to safely wind the glass film subjected to the manufacturing-related treatment and stably obtain a high-quality glass roll. Become.

Further, in the method for producing a glass film according to the present invention, a protective film is laminated on the glass film by attaching the protective film to the glass film via an adhesive layer between the transport speed adjusting portion and the winding portion. A portion may be provided, and a transport distance changing portion may be provided between the transport speed adjusting portion and the laminated portion.

In the laminated portion where the protective film is laminated on the glass film, the glass film is fixedly conveyed by arranging nip rolls or the like on both sides of the glass film. Deformation such as wrinkles tends to accumulate on the glass film between two places where the glass film is fixedly conveyed, such as between the laminated portion and the transport speed adjusting portion. According to the method for manufacturing a glass roll according to the present invention, it is possible to effectively prevent the accumulation of deformation such as wrinkles by providing a transport distance changing portion between the laminated portion and the transport speed adjusting portion. can.

Further, in the method for manufacturing a glass roll according to the present invention, the transport distance changing portion may be configured so that the transport distance of the glass film can be changed at the end portion in the width direction of the glass film.

When the glass film unwound from the glass roll is wound around the glass roll again while adjusting the transport speed, deformation such as wrinkles tends to be particularly noticeable at the widthwise end of the glass film. Based on this point, in the present invention, the transport distance changing portion is configured so that the transport distance of the glass film can be changed at the widthwise end portion of the glass film. With such a configuration, it is possible to more effectively enjoy the effect of making the transport distance different in the width direction of the glass film. Therefore, it is possible to more effectively eliminate or suppress deformation such as wrinkles and more reliably obtain a high-quality glass roll.

Further, in the method for manufacturing a glass roll according to the present invention, the transport distance changing portions may be provided at a plurality of positions different in the transport direction of the glass film.

By providing the transport distance changing portions at a plurality of locations in the transport direction as described above, the transport distance of the glass film can be changed more significantly. In other words, the transport distances can be more different in the width direction of the same glass film. Therefore, even when the deformation such as wrinkles is large, the deformation can be effectively eliminated or suppressed. Further, since the transport distance changing portion is provided at a plurality of locations, the transport distance can be changed at different positions in the width direction of the glass film, so that, for example, the transport distance changing portion on the upstream side is one of the width directions of the glass film. While increasing the transport distance on the side to eliminate or suppress deformation such as wrinkles generated on one side in the width direction, the transport distance on the other side in the width direction of the glass film is slightly increased at the transport distance changing portion on the downstream side. It is also possible to finely adjust the transport distance of the glass film. Therefore, according to the above configuration, it is possible to adjust the transport distance with higher accuracy.

Further, in the method for manufacturing a glass roll according to the present invention, the transport speed adjusting portion is arranged in a relatively upper region, the winding portion is disposed in a relatively lower region, and the transport speed adjusting portion and winding are arranged. When a direction changing region in which the conveying direction of the glass film that has passed through the conveying speed adjusting portion is changed is provided between the taking portion and the taking portion, the conveying distance changing portion may be arranged in the direction changing region.

When the transport speed adjusting portion and the winding portion are arranged at different positions in the height direction in this way, the transport direction of the glass film is changed between the transport speed adjusting portion and the winding portion (direction change region). ) Need to be provided. In the direction change region, the transport direction of the glass film is usually from the horizontal direction (including the case where it has a slight inclination angle with respect to the horizontal direction) to the vertically downward direction (including the case where it has a slight inclination angle with respect to the vertical direction). In the transport direction conversion region, a portion where the glass film is deformed into a curved shape may occur. Therefore, by providing the transport distance changing portion in the direction changing region, the transport distance of the portion of the glass film that is deformed into a curved surface can be changed in the width direction. If the portion of the glass film is deformed into a curved surface, for example, by pressing the curved portion from the concave side, the transport distance of the glass film can be easily increased by the width of the curved portion as compared with the flat portion of the glass film. It is possible to make different directions.

Further, in the method for manufacturing a glass roll according to the present invention, the transport distance changing portion is composed of a roller capable of surface contact with the glass film, and the roller is configured to be rotatable around an axis orthogonal to the rotation axis. May be good.

In this way, by configuring the transport distance changing portion with rollers that can come into surface contact with the glass film, the roller can be a support roller that supports the glass film while transporting it. In other words, the existing support roller can be used as the roller of the transport distance changing portion. Further, in this case, by configuring the roller so as to be rotatable around an axis orthogonal to the rotation axis, the roller can be brought into surface contact with the glass film in a state where the roller is tilted with respect to the width direction of the glass film. Thereby, while the glass film is supported by the rollers, the transport distance on one side in the width direction of the glass film can be made larger than the transport distance on the other side in the width direction. Therefore, it is possible to effectively eliminate or suppress deformation such as wrinkles generated in the glass film while ensuring smooth transportation of the glass film.

Further, the solution to the above problems is also achieved by the glass roll manufacturing apparatus according to the present invention. That is, this manufacturing apparatus is provided between the unwinding portion for unwinding the strip-shaped glass film, the winding portion for winding the unwound glass film to obtain a glass roll, and the unwinding portion and the winding portion. , A glass roll manufacturing apparatus including a transport speed adjusting section for adjusting the transport speed when the glass film unwound by the unwinding section is transported toward the winding section. It is characterized by the fact that a transport distance changing portion that can change the transport distance of the glass film in the width direction of the glass film is provided between the winding portion.

As described above, also in the glass roll manufacturing apparatus according to the present invention, a transport distance changing section capable of changing the transport distance of the glass film in the width direction of the glass film is provided between the transport speed adjusting section and the winding section. I did it. According to this configuration, the transport distance of the glass film can be made different in the width direction with respect to the glass film reaching the transport distance changing section through the transport speed adjusting section. Therefore, for example, when the glass film is deformed such as wrinkles on one side in the width direction and tends to expand, the transport distance on one side in the width direction of the glass film is larger than the transport distance on the other side in the width direction of the glass film. By doing so, it is possible to eliminate or suppress deformation such as wrinkles on one side in the width direction. Therefore, it is possible to prevent a situation in which deformation such as wrinkles is accumulated and becomes huge. Therefore, by winding the glass film in this state, it is possible to prevent damage during winding and stably obtain a high-quality glass roll.

As described above, according to the present invention, when the glass film is wound to produce a glass roll while adjusting the transport speed of the glass film, deformation such as wrinkles generated during the transport of the glass film is eliminated or Since it can be suppressed, the glass film can be accurately wound into a roll without being damaged.

It is the figure which looked at the whole structure of the glass roll manufacturing apparatus which concerns on 1st Embodiment of this invention from the side. It is the figure which looked at the transport distance change part shown in FIG. 1 enlarged from the side. It is the figure which looked at the front view of the transport distance changing part and its drive mechanism shown in FIG. FIG. 2 is a plan view of the transport distance changing unit and its drive mechanism shown in FIG. It is a top view for demonstrating one adjustment example of the transport distance changing part shown in FIG. It is a top view for demonstrating another adjustment example of the transport distance changing part shown in FIG. It is the figure which looked at the transport distance changing part and its drive mechanism which concerns on 2nd Embodiment of this invention in a plan view.

Hereinafter, the first embodiment of the method for producing a glass roll according to the present invention will be described with reference to FIGS. 1 to 6.

As shown in FIG. 1, the glass roll manufacturing apparatus 1 according to the first embodiment of the present invention has an unwinding portion 2 for unwinding the glass film G from the first glass roll GR1 and the unwound glass film G. On the other hand, the transport speed of the glass film G, the manufacturing-related processing unit 3 that performs a predetermined manufacturing-related treatment, the winding unit 4 that winds the glass film G that has been subjected to the manufacturing-related treatment to obtain the second glass roll GR2, and the glass film G. A transport speed adjusting unit 5 for adjusting and a transport distance changing unit 6 are provided. Further, in the present embodiment, the glass roll manufacturing apparatus 1 further includes a laminated portion 7 for laminating the protective film F on the glass film G.

In the present embodiment, as shown in FIG. 1, the manufacturing-related processing unit 3 is arranged on the upstream side of the glass film G in the transport direction with respect to the transport speed adjusting section 5, and the transport speed adjusting section 5 and the winding section 4 are connected to each other. A transport distance changing portion 6 is arranged between them. Further, a laminated portion 7 is arranged between the transport distance changing portion 6 and the winding portion 4.

Further, in the present embodiment, a first-direction conversion region 8 that converts the transport direction of the glass film G from the upper direction to the horizontal direction is arranged between the unwinding unit 2 and the manufacturing-related processing unit 3. The transport direction of the glass film G is converted from the horizontal direction (including the case where it has a predetermined inclination angle with respect to the horizontal direction) to the downward direction between the transport speed adjusting section 5 and the stacking section 7 (winding section 4). The second direction conversion region 9 is arranged. As a result, the manufacturing-related processing unit 3 and the transport speed adjusting unit 5 are located in a relatively upper region, and the unwinding unit 2 and the winding unit 4 are located in a relatively lower region. Further, in the XYZ coordinate system shown in FIG. 1, the X direction and the Y direction coincide with the horizontal direction, and the Z direction coincides with the vertical direction (upward and downward). Further, the Y direction coincides with the width direction of the glass film G.

The unwinding unit 2 unwinds the glass film G from the first glass roll GR1 and supplies the unwound glass film G to the manufacturing-related processing unit 3. Here, the glass film G is a base material glass film or a base material glass film formed into a strip shape by a predetermined molding portion (not shown) and subjected to a predetermined manufacturing-related treatment.

In the present embodiment, the manufacturing-related processing unit 3 is attached to the chemical treatment apparatus 10 that applies a predetermined chemical treatment to the end face of the glass film G unwound from the first glass roll GR1 and the glass film G that has been chemically treated. It has a surface treatment device 11 that performs a predetermined surface treatment, and a cleaning device 12 that cleans the glass film G that has been subjected to the surface treatment. The configuration of the manufacturing-related processing unit 3 shown in FIG. 1 is only an example. If necessary, two or less or four or more processing devices may be provided. Further, the type of the processing apparatus is not limited to the illustration, and any apparatus generally used for processing, such as a cutting apparatus and a film forming apparatus, which is recognized to be related to the production of the glass film G, can be arbitrarily arranged.

By rotating the winding core 13, the winding unit 4 winds the glass film G that has undergone the manufacturing-related processing by the manufacturing-related processing unit 3 into a roll shape. In the present embodiment, the protective film F is laminated on the glass film G by the laminated portion 7 arranged on the upstream side in the transport direction of the glass film G from the winding portion 4, and the laminated film GF obtained thereby is rolled. Take up. Therefore, the second glass roll GR2 obtained by the winding unit 4 has a form in which the glass film G and the protective film F are alternately overlapped. A second glass roll GR2 may be produced by winding a resin sheet such as a polyethylene terephthalate sheet (not shown) as a cushioning sheet between the glass film G and the protective film F.

The transport speed adjusting unit 5 is a transport device that supports and transports the glass film G, and is configured so that the transport speed of the glass film G can be adjusted. In the present embodiment, the transport speed adjusting unit 5 is a belt conveyor 14 capable of sucking the glass film G, for example, an intake device that sucks air through a hole provided in the belt of the belt conveyor 14, and a driving force on the belt. It has a drive source such as a motor, and a control unit (not shown) for controlling the drive source. Here, the transport support surface 14a of the belt conveyor 14 may have a direction that coincides with the horizontal direction (X direction in this illustrated example). Alternatively, as shown in FIG. 2, the belt conveyor 14 is tilted and arranged so that the transport support surface 14a has a predetermined inclination angle with respect to the horizontal direction of the transport support surface (so that it becomes lower toward the downstream side). You may.

In the present embodiment, the case where the transport speed adjusting unit 5 is a belt conveyor 14 capable of adsorbing the glass film G is illustrated, but of course, the present invention is not limited to this. It is possible to take an arbitrary configuration as long as a desired transport speed can be imparted to the glass film G while holding the glass film G.

Further, although not shown, in addition to the transport speed adjusting unit 5 as the transport device, another transport device for transporting the glass film G may be provided between the unwinding unit 2 and the winding unit 4. In this case, the other transfer device is not limited to the belt conveyor, but may be a roller conveyor or other various transfer mechanisms.

The laminated portion 7 enables the protective film F to be laminated on the glass film G by attaching the protective film F to the glass film G via an adhesive layer (not shown), and includes a pair of holding rollers 15a and 15b. It has a protective film roll FR obtained by winding the protective film F into a roll. Although not shown, the protective film roll FR is formed by winding a separator on an adhesive layer formed on one surface of a strip-shaped protective film F and winding it in a roll shape by a winding core 16. The protective film roll FR is arranged in the vicinity of the pair of holding rollers 15a and 15b, and is configured to be able to supply the protective film F between the pair of holding rollers 15a and 15b. The separator may be omitted depending on the type and adhesive strength of the adhesive layer.

FIG. 2 is a side view of a main part of the transport distance changing portion 6. As shown in FIG. 2, the transport distance changing portion 6 has movable rollers 17 and 18 capable of surface contact with the glass film G being transported. In the present embodiment, the two movable rollers 17 and 18 are both arranged in the second direction conversion region 9. In this case, by changing the form of surface contact of each of the movable rollers 17 and 18 with respect to the glass film G, the transport distance of the portion of the glass film G that passes through the transport distance changing portion 6 is set in the width direction of the glass film G ( In this illustrated example, it can be changed in the Y direction).

Here, the change in the form of surface contact described above is, for example, as shown in FIG. 3, in which the movable rollers 17 and 18 are oriented differently from the central axis A1 of the axial rotation (for example, the direction orthogonal to the central axis A1 of the axial rotation). It can be achieved by rotating around the axis A2 of. FIG. 3 shows an example of a drive mechanism 19 for realizing the above-mentioned operation (rotation around the axis A2) of the first movable roller 17 on the upstream side. The drive mechanism 19 includes bearings 20 and 20 that rotationally support the first movable roller 17 at both ends in the axial direction, a motor 21, and a connecting portion 22 that connects the bearings 20 and 20 and the motor 21. In this case, the rotation axis of the motor 21 coincides with the axis A2. Further, the directions of the axis A2 coincide with the Z direction.

In the drive mechanism 19 having the above configuration, the bearings 20, 20 and the first movable roller 17 that are connected to the motor 21 via the connecting portion 22 by driving the motor 21 are in the vertical direction, which is the rotation axis of the motor 21. Rotates around the axis A2 of (see FIG. 4). Therefore, in this case, the posture of the first movable roller 17 can be controlled (for example, the posture shown by the alternate long and short dash line in FIG. 4) by adjusting the amount of rotation by the motor 21. The posture of the second movable roller 18 can be controlled in the same manner as the first movable roller 17 by providing the same drive mechanism (not shown) as the drive mechanism 19 shown in FIG.

As the material of the glass film G supplied to the manufacturing apparatus 1 having the above configuration, silicate glass and silica glass are used, and preferably borosilicate glass, sodalime glass, aluminosilicate glass and chemically strengthened glass are used. Most preferably, non-alkali glass is used. Here, the non-alkali glass is a glass that does not substantially contain an alkaline component (alkali metal oxide), and specifically, a glass having a weight ratio of an alkaline component of 3000 ppm or less. be. The weight ratio of the alkaline component in the present invention is preferably 1000 ppm or less, more preferably 500 ppm or less, and most preferably 300 ppm or less.

The thickness of the glass film G is 10 μm or more and 300 μm or less, preferably 30 μm or more and 200 μm or less, and most preferably 30 μm or more and 100 μm or less.

The above-mentioned glass film G can be formed by a known float method, rollout method, slot down draw method, redraw method, or the like, but it is preferably formed by the overflow down draw method.

The material of the protective film F supplied between the pair of holding rollers 15a and 15b includes, for example, an ionomer film, a polyethylene film, a polypropylene film, a polyvinyl chloride film, a polyvinylidene chloride film, a polyvinyl alcohol film, and a polyester film. Polycarbonate film, polystyrene film, polyacrylonitrile film, ethylene vinyl acetate copolymer film, ethylene-vinyl alcohol copolymer film, ethylene-methacrylic acid copolymer film, nylon (registered trademark) film (polyamide film), polyimide film, An organic resin film (synthetic resin film) such as cellophane can be used, and it is preferable to use a polyethylene terephthalate film (PET film).

The thickness of the protective film F is preferably 10 μm or more and 1000 μm or less, and more preferably 20 μm or more and 500 μm or less.

Hereinafter, a method of manufacturing a glass roll (second glass roll GR2) using the manufacturing apparatus 1 having the above configuration will be described. In this method, the unwinding step S1, the first direction conversion step S2, the manufacturing-related processing step S3, the transport speed adjusting step S4, the second direction conversion step S5, the transport distance changing step S6, and the laminating step S7 And the winding step S8.

In the unwinding step S1, the glass film G is unwound from the first glass roll GR1 of the unwinding unit 2 installed at a predetermined position of the manufacturing apparatus 1, and the transfer speed adjusting unit 5 and, if necessary, a transfer device (not shown) are used. To the manufacturing-related processing unit 3 located on the downstream side of the first glass roll GR1. In the present embodiment, the unwinding unit 2 is located in a relatively lower region, and the manufacturing-related processing unit 3 is located in a relatively upper region (see FIG. 1). Therefore, a first-direction conversion region 8 is provided between the unwinding unit 2 and the manufacturing-related processing unit 3, and the glass film is conveyed in the upward direction (Z direction in FIG. 1) in the first-direction conversion region 8. The transport direction of G is converted to the horizontal direction (X direction in FIG. 1) and transported to the manufacturing-related processing unit 3 (first direction conversion step S2).

In the manufacturing-related processing step S3, a predetermined manufacturing-related processing is performed on the glass film G passing through the manufacturing-related processing unit 3. In the present embodiment, the chemical treatment device 10, the surface treatment device 11, and the cleaning device 12 are arranged in order from the upstream side in the transport direction of the glass film G. Therefore, the glass film G unwound from the first glass roll GR1 is sequentially subjected to chemical treatment of the end face by the chemical treatment device 10, surface treatment by the surface treatment device 11, and cleaning treatment by the cleaning device 12. Further, by disposing the transport speed adjusting unit 5 on the downstream side of the manufacturing-related processing unit 3, the transport speed of the glass film G passing through the manufacturing-related processing unit 3 is adjusted to a predetermined size (conveyance). Speed adjustment step S4). This makes it possible to stably apply the various manufacturing-related treatments described above to the glass film G.

The glass film G that has been subjected to a predetermined treatment by the manufacturing-related processing unit 3 reaches the second direction conversion region 9 via the transport speed adjusting unit 5. Here, the transport distance changing unit 6 is provided in the second direction conversion region 9. Further, the transport distance changing unit 6 has two movable rollers 17 and 18, and at least one of these two movable rollers 17 and 18 is predetermined from the reference state (the state indicated by the alternate long and short dash line in FIG. 5). It is displaced to the state of. In the present embodiment, as shown in FIG. 5, in the first movable roller 17 located relatively upstream, the central axis A1 of the axial rotation coincides with the width direction (here, the Y direction) of the glass film G. Therefore, it is in a state of being rotated by a predetermined angle θ1 around the axis A2 (here, the Z direction) in the direction orthogonal to the central axis A1. Further, the second movable roller 18 located relatively downstream has an axis A2 in a direction orthogonal to the central axis A1 from a state in which the central axis A1 of the axis rotation coincides with the width direction (Y direction) of the glass film G. It is in a state of being rotated by a predetermined angle θ2 around (Z direction). Further, the direction of rotation at this time is set so that the transport distance on the side where deformation such as wrinkles is likely to occur (for example, the left side in FIG. 5) is relatively long in the width direction of the glass film G. In the present embodiment, as shown in FIGS. 2 and 5, the transport distance between the axial end ends 17a and 18a of the first and second movable rollers 17 and 18 and the widthwise one side Ga of the glass film G is increased. The rotation direction of each of the movable rollers 17 and 18 is set to 1.

By making the transport distance of the glass film G passing through the transport distance changing portion 6 different in the width direction in this way, the deformation such as wrinkles generated in the glass film G is eliminated or suppressed. Therefore, in the second direction conversion region 9, the horizontal direction (X direction in FIG. 1) or the drawing while eliminating or suppressing deformation such as wrinkles generated in the glass film G as described above by the transport distance changing unit 6. As shown in 2, the transport direction of the glass film G that is transported slightly diagonally downward is converted to the downward direction (Z direction in FIG. 1) and transported to the laminated portion 7 (second direction conversion step S5, transfer distance change). Step S6).

In the laminating step S7, the protective film F is laminated on the glass film G that has reached the laminating portion 7 located on the downstream side of each of the movable rollers 17 and 18. In the present embodiment, as shown in FIGS. 1 and 2, a pair of holding rollers 15a and 15b are arranged on the transport path of the glass film G, and a protective film roll arranged in the vicinity of the pair of holding rollers 15a and 15b. The protective film F is unwound from the FR and supplied between the pair of holding rollers 15a and 15b. Here, since the protective film F is integrally provided with an adhesive layer (not shown), the glass film G and the protective film F are sandwiched between a pair of sandwiching rollers 15a and 15b so as to pass through the adhesive layer. The protective film F is attached to the glass film G. As a result, a laminated film GF in which the glass film G and the protective film F are laminated is obtained. Further, since the deformation such as wrinkles generated in the glass film G is eliminated or suppressed in the transport distance changing step S6 on the upstream side, the flat glass film G can be stably attached to the protective film F. can.

In the subsequent winding step S8, the second glass roll GR2 is obtained by winding the laminated film GF obtained in the laminating step S7 around the winding core 13. In the present embodiment, the second glass roll GR2 is shipped as a glass roll as a final product.

As described above, in the method for manufacturing the glass roll (second glass roll GR2) according to the present embodiment, the transport distance of the glass film G between the transport speed adjusting unit 5 and the winding unit 4 is set to the glass film G. A transport distance changing portion 6 that can be changed in the width direction of the above is provided. According to this configuration, the transport distance of the glass film G can be made different in the width direction with respect to the glass film G reaching the transport distance changing section 6 via the transport speed adjusting section 5 (see FIG. 5). Therefore, for example, when the glass film G is deformed such as wrinkles on one side Ga in the width direction and tends to expand, the transport distance on one side Ga in the width direction of the glass film G is set to the other side in the width direction of the glass film G. By making it larger than the transport distance in Gb, deformation such as wrinkles in Ga on one side in the width direction can be eliminated or reduced. Therefore, it is possible to prevent a situation in which deformation such as wrinkles is accumulated and becomes huge. Therefore, by winding the glass film G (laminated film GF in this embodiment) in this state, it is possible to prevent damage during winding and stably obtain a high quality glass roll (second glass roll GR2). It will be possible.

Further, in the present embodiment, a laminated portion 7 for laminating by attaching a protective film F is provided between the transport speed adjusting portion 5 and the winding portion 4, and the transport speed adjusting portion 5 and the laminating portion 7 are combined. A transport distance changing section 6 is provided between them. When the glass film G and the protective film F are sandwiched and laminated by the pair of sandwiching rollers 15a and 15b as in the present embodiment, the edge is cut at the position where the glass film G is sandwiched by the pair of sandwiching rollers 15a and 15b. It will be in the state of being. When the transport speed adjusting unit 5 is a suction-capable belt conveyor 14, the glass film G is cut off on the belt conveyor 14 as described above, so that there is a gap between the belt conveyor 14 and the winding unit 4. When a pair of holding rollers 15a and 15b are arranged in the glass film G, the distance between the edges cut at two different points of the glass film G is shortened, and deformation such as wrinkles can easily occur and expand. .. Further, since the transport distance of the glass film G until the next edge cutting is short, there is little possibility that the deformation such as wrinkles once generated is eliminated or suppressed. On the other hand, according to the method for manufacturing the glass roll (second glass roll GR2) according to the present embodiment, the transfer distance changing unit 6 can eliminate or suppress deformation such as wrinkles generated during the transfer of the glass film G. As a result, the glass film G can be accurately wound into a roll without being damaged. Therefore, even when the transport speed adjusting portion 5 and the laminated portion 7 are arranged at positions close to each other as in the present embodiment, the glass film G can be accurately formed without worrying about deformation such as wrinkles. Manufacturing-related processing can be performed.

Although the method for manufacturing the glass roll and the first embodiment of the manufacturing apparatus according to the present invention have been described above, the manufacturing method and the manufacturing apparatus can naturally take any form within the scope of the present invention.

For example, in the first embodiment, the transport distance changing portion 6 is composed of two movable rollers 17 and 18, and the drive mechanism 19 is configured so as to rotate each of the movable rollers 17 and 18 around the vertical axis A2. bottom. Then, in such a configuration, by rotating both the two movable rollers 17 and 18 in the same direction, the widths of the axial end sides 17a and 18a of the movable rollers 17 and 18 and the glass film G are obtained. The case where the adjustment is made so that the Ga on one side in the direction is in large contact is illustrated, but of course, the contact form between the movable rollers 17 and 18 and the glass film G is not limited to this. For example, as shown in FIG. 6, the first movable roller 17 on the upstream side is rotated in the same direction as in FIG. 5, and the second movable roller 18 on the downstream side is rotated in the opposite direction to the first movable roller 17. It is also possible to make adjustments. In this case, one end side 17a in the axial direction of the first movable roller 17 and one side Ga in the width direction of the glass film G are in relatively large contact with each other, and the other end side 18b in the axial direction of the second movable roller 18 and the glass film G are in contact with each other. The other side Gb in the width direction makes relatively large contact. Therefore, in this case, the glass film G has a relatively long transport distance on one side Ga in the width direction in contact with one end side 17a in the axial direction of the first movable roller 17, and the other end side in the axial direction of the second movable roller 18. The transport distance becomes relatively long on the other side Gb in the width direction in contact with 18b. In this way, the transport distance of the glass film G can be finely adjusted by forming the transport distance changing unit 6 with two or more movable rollers 17 and 18. Therefore, it is possible to adjust the transport distance more accurately than adjusting the transport distance with only one movable roller 17 (18).

Further, in the above embodiment, the case where the two movable rollers 17 and 18 are configured to be rotatable around the vertical axis A2 orthogonal to the central axis A1 of the axis rotation is illustrated, but of course, other movable rollers are movable. It is also possible to take the form. FIG. 7 shows a plan view of a main part of the transport distance changing portion 30 according to an example thereof (second embodiment of the present invention). As shown in FIG. 7, the transport distance changing unit 30 according to the present embodiment is different from that of the first embodiment in the drive mechanism 32 of the movable roller 31. That is, the drive mechanism 32 of the first embodiment is configured in that bearings 33a and 33b provided at both ends of the movable roller 31 in the axial direction are slidable along the longitudinal direction of the slide guides 34a and 34b. Different from 19. In this case, the bearings 33a and 33b also function as slide portions with respect to the slide guides 34a and 34b, respectively. Here, the mechanism for enabling the slides of the bearings 33a and 33b with respect to the slide guides 34a and 34b is arbitrary, and can be configured by using a known linear motion mechanism such as a linear motor or a rack and pinion mechanism. .. Although only one movable roller 31 is disclosed in FIG. 7, in reality, the transport distance changing unit 30 is composed of two movable rollers 31 and 31.

By configuring the drive mechanism 32 of the movable roller 31 in this way, the degree of freedom in the position of the movable roller 31 can be increased as compared with the first embodiment. Therefore, the contact form with the glass film G can be set more widely, and the transfer distance in the width direction can be changed more flexibly.

The above-mentioned movable rollers 17, 18 and 31 can be adjusted at arbitrary timings. For example, it may be carried out according to changes in the size (width direction dimension, thickness dimension), material, etc. of the glass film G to be conveyed. Alternatively, it may be carried out while the glass film G is actually being conveyed (when it is temporarily stopped).

Further, the number of movable rollers 17, 18 (31) is not limited to two. One movable roller 17 (18, 31) may form the transport distance changing unit 6 (30), or three or more movable rollers may form the transport distance changing unit 6.

Further, in the above embodiment, the case where the transport distance changing unit 6 is provided in the second direction changing region 9 and the movable rollers 17 and 18 (31) also serve as the guide rollers at the time of changing the direction is illustrated. Not limited. For example, the movable rollers 17, 18 (31) may be arranged so as to make surface contact with the glass film G before and after the transport direction of the second direction conversion region 9.

Further, in the above description, the case where the transport distance changing unit 6 (30) has the movable rollers 17 and 18 (31) is illustrated, but of course, the present invention is not limited to this. Any configuration can be taken as long as the transport distance can be changed in the width direction of the glass film G by some action on the glass film G. Therefore, for example, it is possible to configure the transport distance changing portion with a movable surface contact portion having a form other than a roller.

1 Glass roll manufacturing equipment 2 Unwinding unit 3 Manufacturing-related processing unit 4 Winding unit 5 Conveyor speed adjustment unit 6 Conveyor distance changing unit 7 Laminating unit 8 First direction conversion area 9 Second direction conversion area 10 Chemical processing equipment 11 Surface Processing device 12 Cleaning device 13 Winding core 14 Belt conveyor 15a, 15b Holding roller 16 Winding core 17,18 Movable roller 19 Drive mechanism 20, 20 Bearing 21 Motor 22 Connecting part 30 Transport distance changing part 31 Movable roller 32 Drive mechanism 33a, 33b Bearing (slide part)
34a, 34b Slide guide A1 Center axis (movable roller)
A2 Vertical axis (movable roller)
F Protective film FR Protective film roll G Glass film GF Laminated film GR1 First glass roll GR2 Second glass roll

Claims (8)

A method for manufacturing a glass roll, wherein a strip-shaped glass film is unwound at the unwinding portion, and the unwound glass film is wound at the winding portion to obtain a glass roll.
A transport speed adjusting unit is provided between the unwinding portion and the winding portion to adjust the transport speed when the glass film unwound by the unwinding portion is transported toward the winding portion. Be,
Manufacture of a glass roll, characterized in that a transport distance changing portion capable of changing the transport distance of the glass film in the width direction of the glass film is provided between the transport speed adjusting portion and the winding portion. Method. The method for manufacturing a glass roll according to claim 1, wherein a processing section related to manufacturing the glass film is provided between the unwinding section and the transport speed adjusting section. A laminated portion for laminating the protective film on the glass film is provided between the transport speed adjusting portion and the winding portion by attaching a protective film to the glass film via an adhesive layer.
The method for manufacturing a glass roll according to claim 1 or 2, wherein the transport distance changing portion is provided between the transport speed adjusting portion and the laminated portion. The method for manufacturing a glass roll according to any one of claims 1 to 3, wherein the transport distance changing portion is configured so that the transport distance of the glass film can be changed at an end portion in the width direction of the glass film. The method for manufacturing a glass roll according to any one of claims 1 to 4, wherein the transport distance changing portion is provided at a plurality of positions different in the transport direction of the glass film. The transport speed adjusting portion is arranged in a relatively upper region, the winding portion is disposed in a relatively lower region, and the transport speed adjusting portion and the winding portion are separated from each other. A transport direction conversion region for changing the transport direction of the glass film that has passed through the transport speed adjusting unit is provided.
The method for manufacturing a glass roll according to any one of claims 1 to 5, wherein the transport distance changing portion is arranged in the transport direction conversion region. The transport distance changing portion is composed of a roller capable of surface contact with the glass film.
The method for manufacturing a glass roll according to any one of claims 1 to 6, wherein the roller is configured to be rotatable around an axis orthogonal to the rotation axis. An unwinding portion for unwinding a strip-shaped glass film, a winding portion for winding the unwound glass film to obtain a glass roll, and the unwinding portion provided between the unwinding portion and the winding portion. A glass roll manufacturing apparatus including a transport speed adjusting section for adjusting a transport speed when the glass film unwound by the section is transported toward the winding section.
Manufacture of a glass roll, characterized in that a transport distance changing portion capable of changing the transport distance of the glass film in the width direction of the glass film is provided between the transport speed adjusting portion and the winding portion. Device.

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