TW201716344A - Glass roll manufacturing method and glass roll - Google Patents

Abstract

The method includes: a basic winding step (A1) for producing a mother glass roll (17), a guide tape joining and winding step (A2) for producing a mother glass roll (25) with a guide tape, and is used for making The resizing winding step (A3) of the glass roll (41) with the adjusted guide tape, and the shipping roll for producing the glass roll (55) with the adjusted guide tape for shipping Wrap around step (A4).

Description

Glass roll manufacturing method and glass roll

The present invention relates to a method for producing a glass roll in which a step of winding a glass film around a winding core into a roll shape is performed plural times, and a glass roll obtained by the method.

As is well known, thin display devices such as liquid crystal displays and organic EL displays, as well as portable devices such as smart phones and tablet PCs that have been rapidly popularized in recent years, are required to be lightweight. Therefore, as a glass substrate used in these machines, a glass film which is thinned into a film shape is available for practical use. The glass film is formed into a substantially rectangular shape at the stage of the final product, and is processed in a strip form at the stage including various processing steps of the previous manufacturing steps.

Such a glass film is generally in the form of a roll of a roll wound around a winding core in consideration of convenience in handling, storage, or transportation. Therefore, when the glass film is formed into a glass roll, it is excellent not only in handling property but also in the case where various processes are performed, and work efficiency is improved.

However, this glass film, from the glass manufacturer The steps of winding the wound around the core into a glass roll may be repeated several times during the period from forming to shipping.

As an example, the technique disclosed in Patent Document 1 is a temporary winding step and a final winding step in which a glass film that is conveyed while being formed and a protective sheet are wound around a core. The mother glass roll is wound around the circumference, and the mother glass roll is unwound in the main winding step, and the glass film is sufficiently tensioned, and then wound together with the protective sheet to produce a product glass roll.

Furthermore, it is disclosed in this document that after the formal winding step, a rewinding step of the glass film may be further included.

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2013-14441

However, the method for producing a glass roll disclosed in Patent Document 1 merely discloses that the main winding step is performed after the temporary winding step is performed, and then the rewinding step is performed as the case may be.

Therefore, a glass roll that is shipped as a final product, such as a glass manufacturer, is intended to be a high quality with very small winding deviation and excellent dimensional accuracy, and processing using only the above steps is insufficient.

In view of the above, an object of the present invention is to improve the types of the plurality of winding steps and the processing of each step during the period from the molding to the shipment of the glass film, and to obtain a glass roll for shipment. High quality.

The present invention, which has been developed to solve the above problems, is characterized in that it has a basic winding step, a guide belt connecting winding step, a resizing winding step, and a shipping winding step, which is a basic winding step The glass film and the protective sheet which are conveyed while being formed are wound around the winding core to form a mother glass roll; the guide tape is coupled and wound, and the mother glass roll is unwound and is carried out The process of winding the glass film together with the protective sheet around the winding core and the process of joining the guide tapes at both ends in the longitudinal direction of the glass film, thereby producing a mother glass roll with a guide tape; In the winding step, the mother glass roll with the guide tape is unwound, and the glass film is wound around the circumference of the core together with the protective sheet, and the glass film is cut into a predetermined width along the longitudinal direction. This produces a resized glass roll with a guide tape; the winding step for shipping is to unwind the glass roll of the adjusted guide tape and to glaze the glass And the protective film sheet together again wound around the winding core is rewound into a ship, whereby the ship to produce a guide is adjusted with the size of the glass roll attached. Further, it is preferable that the above-described guide tape joining winding step, the resizing winding step, and the shipping winding step are performed by a so-called roll to roll method (hereinafter referred to as a roll-to-roll method). .

According to this configuration, the winding step performed during the period from the formation of the glass film to the shipment includes the above four types, and in the winding steps Do not handle it properly. Therefore, all of the winding steps are completed, and the glass roll for shipment, which is obtained as a final product, that is, the glass roll with the guide tape adjusted for shipment, can have a very small winding deviation. The dimensional accuracy is very good. Therefore, it is possible to improve the quality of the glass roll for shipment.

Preferably, in the above-described method, in the base winding step, the glass film is not fixed to the core and the protective sheet is fixed to the core to perform winding.

According to this method, in the basic winding step, although the protective sheet is fixed to the core, the glass film is not fixed to the core, so the core does not directly impart tension to the glass film, and the glass film is not wound during winding. It is unfairly restrained. Therefore, during the molding of the glass film, the formed portion is less likely to be adversely affected by the winding side, and problems such as undesired variations in the thickness of the glass film are less likely to occur. Further, the current glass film is wound while being wound into a mother glass roll while being meandered, but it is not necessary to forcibly correct the meandering of the glass film. In this way, not only the situation in which the glass film is adversely affected, but also the damage and damage of the glass film at the time of winding due to the forced correction are unlikely to occur.

Preferably, in the above method, in the guiding tape joining winding step and the resizing winding step, the guiding tape is fixed to the winding core and the protective sheet is fixed to the guiding tape to perform winding.

According to this method, in the guide tape coupling winding step, the guide tape attached to the glass film is fixed to the winding core, and the protective sheet is fixed to the guide tape, so that the winding operation of the glass film is properly restrained. Therefore, the glass film is fed toward the winding position and can be tempted along the correct path. Guided, and allows the appropriate tension to act on the glass film. As a result, the initial operation for correcting the large winding deviation occurring in the mother glass roll can be appropriately performed. Further, the protective sheet is fixed to the guide tape, and the winding length of the protective sheet can be shortened as compared with the case of being fixed to the winding core, and the amount of use can be reduced. Further, in the resizing winding step, the same as the previous guiding belt joining winding step, since the guiding tape is fixed to the winding core, and the protective sheet is fixed to the guiding tape, and the correction in the previous step The larger winding deviations complement the feeding of the glass film towards the winding position along a more correct path. As a result, not only the second operation for correcting the large winding deviation occurring in the mother glass roll can be more appropriately performed, but also a large cutting deviation caused by the glass film of the mother glass roll can be obtained. After disappearing, the glass film is properly cut (resized) to a desired width.

In the above method, it is preferable to perform winding in the winding step of shipping by fixing the guide tape to the winding core and fixing the protective sheet to the winding core.

According to this method, in the winding step of shipment, the winding force of the winding core is directly transmitted to the protective sheet, and the tension can be more reliably applied to the glass film from the protective sheet. As a result, it is possible to obtain a glass roll for shipment which is more appropriately re-rolled.

Instead, in the winding step of shipment, the guide tape is fixed to the winding core and the protective sheet is fixed to the guide tape to perform winding, similarly to the above-described guide belt connecting winding step and the resizing winding step. can.

Also in this case, it is possible to obtain a glass roll for shipment which is more appropriately re-rolled.

In addition, instead, in the winding step of shipping, in glass One side of the glass film is bonded to the laminated sheet, and the guide tape is fixed to the winding core, and the protective sheet is sandwiched between the other surface of the glass film and the laminated sheet to be wound.

According to this method, the protective sheet is sandwiched between the surface of the glass film and the surface of the laminated sheet, and the protective sheet is less likely to slip than when the protective sheet is sandwiched between the faces of the two glass films. As a result, it is possible to effectively prevent occurrence of winding deviation and occurrence of winding over-tightening, and obtain a glass roll for shipment which is appropriately re-rolled.

In this case, the winding step for shipment may be performed by not fixing the protective sheet to the winding core.

According to this method, the sliding of the above-mentioned protective sheet is less likely to occur, and as a result, the winding length of the protective sheet can be shortened and the amount of use thereof can be reduced.

The glass roll after completion of the winding step for shipment in the above manufacturing method is characterized by having the structure shown below.

In other words, the first glass roll is a glass roll for winding a glass film and a protective sheet around a winding core in a roll shape, and the glass film is connected to the guide tape and The guide tape is fixed to the core and the protective sheet is fixed to the core. When the first glass roll is produced, the above four winding steps are not necessarily performed.

In addition, the second glass roll is a glass roll for winding a glass film and a protective sheet around a winding core in a roll shape, and is characterized in that the glass film is connected to the guide tape and guided. The leader tape is fixed to the core and the protective sheet is fixed to the guide tape. Making the second glass Also in the case of the roll, it is not necessary to perform the above-described four winding steps.

In addition, the third glass roll is a glass roll for winding a glass film and a protective sheet around a winding core in a roll shape, and is characterized in that the glass film is connected to the guide tape in the glass. One side of the film is attached to the laminated sheet and the guide tape is fixed to the core, and the protective sheet is not fixed to the core but sandwiched between the other side of the glass film and the laminated sheet. Also in the case of manufacturing the third glass roll, the above four winding steps are not necessarily performed.

According to the present invention, the types of the plurality of winding steps and the processing of each step performed during the period from the molding to the shipment of the glass film can be appropriately performed, and the quality of the glass roll for shipment can be improved.

13‧‧‧ glass film

15‧‧‧Protective sheet

16‧‧‧Volume core

17‧‧‧ mother glass roll

23‧‧‧Protective sheet

24‧‧‧Volume core

25‧‧‧Female glass roll with guide tape

26‧‧‧Winding start side guide belt

39‧‧‧Protective sheet

40‧‧‧Volume core

41‧‧‧Reinforced glass roll with guide tape

46‧‧‧Resized glass film

46x‧‧‧ one side of the glass film

46y‧‧‧The other side of the glass film

47‧‧‧Winding start side guide belt

49‧‧‧Winding start side guide belt

51‧‧‧Volume core

53‧‧‧Protective sheet

55‧‧‧Selling glass rolls

56‧‧‧Layer film

56x‧‧‧ one side of the laminated film

58‧‧‧Selling glass rolls

A1‧‧‧Basic winding steps

A2‧‧‧ Guide belt joint winding step

A3‧‧‧Resize winding step

A4‧‧‧Winding steps for shipment

Fig. 1 is a flow chart showing the procedure or flow of a method for producing a glass roll according to an embodiment of the present invention.

Fig. 2 is a schematic front view showing an implementation state of a basic winding step of a method for producing a glass roll according to an embodiment of the present invention.

Fig. 3 is a perspective view showing a main part of a mounting structure of a glass film and a protective sheet for a winding core in a basic winding step of a method for producing a glass roll according to an embodiment of the present invention.

4 is a view showing a method of manufacturing a glass roll according to an embodiment of the present invention; A schematic front view of the implementation of the guide tape joining winding step and the shipping winding step.

Fig. 5 is a perspective view showing a main part of a mounting structure of a guide tape and a protective sheet for a winding core in a guide tape joining and winding step of a method for manufacturing a glass roll according to an embodiment of the present invention.

Fig. 6 is a schematic plan view showing a main part of a preferred connection structure of a guide tape and a glass film in a guide tape joining and winding step of a method for producing a glass roll according to an embodiment of the present invention.

Fig. 7 is a schematic front view showing an implementation state of the resizing winding step of the method for producing a glass roll according to the embodiment of the present invention.

Fig. 8 is a perspective view showing a main part of a mounting structure of a guide tape and a protective sheet with respect to a winding core in a winding step of shipping in a method of manufacturing a glass roll according to an embodiment of the present invention.

FIG. 9 is a schematic front view showing the main part of another example of the winding method of the glass film and the protective sheet in the winding step of shipping the glass roll manufacturing method according to the embodiment of the present invention.

Hereinafter, a method of manufacturing a glass roll according to an embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a flow chart showing the procedure of a method for producing a glass roll according to an embodiment of the present invention. As shown in FIG. 1, the manufacturing method of the glass roll has the basic winding step A1, the guide tape connection winding step A2, the resizing winding step A3, and the shipping winding step A4.

The following processes are roughly performed in the winding steps A1 to A4. In other words, in the basic winding step A1, the glass film conveyed while being formed and the protective sheet are wound around the circumference of the winding core to produce a mother glass roll. Further, in the leader tape joining and winding step A2, the mother glass roll is unwound, and the process of winding the glass film together with the protective sheet around the winding core and the both ends of the glass film are performed. The part is connected to the processing of the guide tape, thereby producing a mother glass roll with a guide tape attached thereto. Further, in the resizing winding step A3, the mother glass roll of the above-mentioned guide tape is unwound, and the glass film is wound around the circumference of the core together with the protective sheet, and the glass film is longitudinally wound. The glass roll having the adjusted guide tape was cut to have a predetermined width. Further, in the winding step A4 for shipment, the glass roll of the above-mentioned adjusted guide tape is unwound, and the glass film is again wound around the winding core together with the protective sheet to be re-rolled into the package. In order to produce a glass roll with a guide tape that has been resized for shipment.

Further, by performing the above-described four kinds of winding steps A1 to A4, the glass roll for shipment which is obtained as a final product, that is, the glass roll with the guide tape adjusted for shipment can be rolled up. High quality with very small deviations and excellent dimensional accuracy.

Hereinafter, each process performed in each of the above four winding steps A1 to A4 will be described in detail.

Fig. 2 is a schematic front view showing the state in which the basic winding step A1 is carried out. As shown in FIG. 2, in the basic winding step A1, the glass film G formed by the molding apparatus 1 is cut into pieces by the cutting device 2. After the predetermined width, the winding is performed at the winding position 3 at the downstream end of the glass film conveying path.

In the present embodiment, the molding apparatus 1 is subjected to an overflow downdraw method. In detail, the forming apparatus 1 has a forming zone 4, a quenching zone 5, and a cooling zone 6 in order from top to bottom. The molding apparatus 1 can also perform another down-draw method such as a flow hole down-draw method or a redraw method, and can also implement a float method.

In the forming zone 4, the molten glass G0 overflowing from the top of the molded body 7 toward the both sides meets at the lower end portion and flows downward, thereby forming the glass film G into a plate shape from the molten glass G0. The formed glass film G is subjected to strain relief treatment in the quenching zone 5, and is cooled to a temperature near the room temperature in the cooling zone 6. A plurality of roller groups 8 are disposed in the cold zone 5 and the cooling zone 6, and the roller groups 8 are used to guide both end portions of the glass film G in the width direction toward the lower side.

The formed glass film G is bent in a substantially horizontal direction by a plurality of direction changing roller groups 9 supported from below by the lower position of the molding apparatus 1, and is then sent to the cutting device 2 while maintaining its posture. The direction changing roller subgroup 9 is not applicable when the forming apparatus 1 is subjected to the floating method.

In the cutting device 2, the ineffective portion (ear portion) Gx formed at both end portions in the width direction of the glass film G is cut and removed. The ineffective portion Gx is thicker than the effective portion Gy in the central portion in the width direction of the glass film G.

In detail, the cutting device 2 is provided with: a thin glass The conveying means 10 for conveying the film G toward the downstream side in a substantially horizontal posture, the local heating means 11 for irradiating the laser beam L to the glass film G placed on the conveying means 10, and locally heating, and the spraying of the refrigerant W Cooling means 12. Further, while the glass film G is fed toward the downstream side by the transport means 10, the glass film G is thermally stressed by the expansion caused by the local heating and the shrinkage caused by the cooling of the refrigerant, whereby the glass film G is ineffective. The part Gx is removed by laser cutting. Then, the effective portion Gy of the glass film G (hereinafter referred to as the glass film 13) is sent to the winding position 3, and the basic winding step A1 is performed.

In the base winding step A1, the protective sheet 15 which is continuously unwound from the sheet roll 14 is wound around the circumference of the winding core 16 while being superposed on the outer peripheral surface of the glass film 13, whereby the mother glass roll 17 is produced. In this case, the protective sheet 15 unwound from the sheet roll 14 is guided by the roller (free roll) 18 to the overlapping position 19 with the glass film 13. This roller 18 functions as a tension roller that imparts tension to the protective sheet 15.

Here, the glass thin film 13 is a thin glass ribbon having a thickness of 300 μm or less, 200 μm or less, 100 μm or less, or 50 μm or less, and a thickness of 1 μm or more, 5 μm or more, or 10 μm or more. Further, the length of the glass film 13 in the width direction (the direction parallel to the axis of the winding core 16) is 100 mm or more, 300 mm or more, or 500 mm or more. The matters relating to the glass film 13 described herein are the same in the subsequent steps A2 to A4.

On the other hand, the thickness of the protective sheet 15 is 1000 μm. The lower portion is 500 μm or less or 300 μm or less, and is 10 μm or more or 20 μm or more. Further, the length of the protective sheet 15 in the width direction is shorter or longer than the length of the glass film 13 in the width direction or the same. In this case, as the protective sheet 15, for example, an ionic polymer film, a polyethylene film, a polypropylene film, a polyvinyl chloride film, a polyvinylidene chloride film, a polyvinyl alcohol film, a polyester film, or a polycarbonate can be used. Film, polystyrene film, polyacrylonitrile film, ethylene-vinyl acetate copolymer film, ethylene-vinyl alcohol copolymer film, ethylene-methacrylate copolymer film, nylon (registered trademark) film (polyamide film) An organic resin film (synthetic resin film) such as a polyimide film or a celite. The matters relating to the protective sheet 15 described herein are the same in the subsequent steps A2 to A4.

In the basic winding step A1, as shown in FIG. 3, the start end portion 15a of the protective sheet 15 on the winding start side is fixed to the outer peripheral surface 16a of the core 16 by a tape body 20 such as an adhesive tape or a tape. . On the other hand, the start end portion 13a of the glass film 13 on the winding start side is not fixed to the winding core 16 and is not fixed to the protective sheet 15. Therefore, the glass film 13 and the protective sheet 15 are wound together in a roll shape around the winding core 16 as the mother glass roll 17, and the glass film 13 is sandwiched only on the inner peripheral surface 15x and the outer periphery of the protective sheet 15. The state between the faces of 15y.

In the base winding step A1, a resin film is preferably used as the protective sheet 15. According to this method, the protective sheet 15 can be subjected to an appropriate tension without imparting excessive tension to the glass film 13, and a tight mother glass roll 17 can be produced. The protective sheet 15 in this case may have a tensile modulus of 1 to 5 GPa.

In the base winding step A1, both ends in the width direction of the protective sheet 15 are beyond the both ends in the width direction of the glass film 13 from the viewpoint of the cut end faces of both ends in the width direction of the cover glass film 13, but Limited to this aspect. In other words, both end portions in the width direction of the glass film 13 may extend beyond both ends in the width direction of the protective sheet 15, or both end portions in the width direction of the protective sheet 15 may be aligned with both end portions in the width direction of the glass film 13. The matters relating to the both ends of the glass film 13 and the protective sheet 15 in the width direction described herein are the same in the subsequent steps A2 to A4.

As described above, in the basic winding step A1, the winding core 16 does not directly impart excessive tension to the glass film 13. Further, the relationship between the glass film 13 and the protective sheet 15 is not connected to each other, and the glass film 13 is not unduly restrained at the time of winding. Therefore, during the molding of the glass film 13 (G) by the molding apparatus 1, it is less likely to be adversely affected from the winding position 3 side, and as a result, the thickness of the glass film 13 (G) is less likely to cause an undue variation. Further, the glass film 13 (G) may be conveyed in a state of being meandered by the conveying means 10 to reach the winding position 3, and the meandering of the glass film 13 (G) is not forcibly corrected. Therefore, since the formation of the glass film 13 (G) is not easily adversely affected. In addition, when the meandering of the glass film 13 (G) is forcibly corrected, it may cause a stress such as a torsion or the like to locally act on the glass film 13 during winding, causing damage or breakage, and the like. Effectively avoid it. In the basic winding step A1, although the above excellent effects can be enjoyed, the mother glass roll 17 obtained in the step A1 is at the cost thereof. A large winding deviation and a cutting deviation are generated.

Next, the leader tape joining and winding step A2 is carried out by the roll-to-roll method of the aspect illustrated in Fig. 4 . As shown in FIG. 4, the guide tape coupling winding step A2 performs the following process, that is, rewinding the mother glass roll 17 at the unwinding position 21, and re-protecting and protecting the glass film 13 at the winding position 22. The sheet 23 is wound into a roll shape around the winding core 24, and a mother glass roll 25 to which a guide tape is attached is produced. In this case, in the state shown in the figure, the leading end portion 13a1 of the winding start side of the glass film 13 wound as the mother glass roll 25 to which the guide tape is attached is connected to the guide tape (hereinafter referred to as Winding start side guide belt) 26.

Specifically, as shown in FIG. 5, the start end portion 13a1 of the glass film 13 and the end portion 26b of the winding start side guide tape 26 are a pair of tapes by an adhesive tape or a tape (a pair of the front and the back). The tape body 27 is connected to each other. The length in the width direction of the glass film 13 and the length in the width direction of the winding start side guide tape 26 (the same applies to the winding end side guide tape to be described later) are the same, and in a state in which the two 13 and 26 are connected to each other. Both ends of the width directions of the two sides 13 and 26 extend along a straight line. Further, the start end portion 26a of the winding start side guide belt 26 is fixed to the outer peripheral surface 24a of the winding core 24 by the tape body 28 having the same characteristics as described above. The winding start side guide belt 26 is fixed to the winding core 24 so as to extend correctly in a direction orthogonal to the axis of the winding core 24. Further, the start end portion 23a of the protective sheet 23 is fixed to the outer peripheral surface 26y (which may be an inner peripheral surface) of the winding start side guide belt 26 by the tape body 29 having the same characteristics as described above. Winding start side guide belt 26 (winding end side guide to be described later) The overall length of the belt is preferably the same as the total length of the conveyance path from the unwinding position 21 to the winding position 22 shown in FIG.

Here, FIG. 6 is a schematic plan view showing a main portion of a preferred connection structure of the winding start side guide belt 26 and the glass film 13. As shown in Fig. 6, in the joint structure, the width direction length W1 of the winding start side guide belt 26 is shorter than the width direction length W2 of the glass film 13, and the end portion of the winding start side guide belt 26 is formed. The starting end portion 13a1 of the 26b and the glass film 13 is connected to each other through the sheet-like connecting body 30. In detail, the length W3 in the width direction of the sheet-like connecting body 30 is shorter than the length W1 in the width direction of the winding start side guide belt 26. The start end portion 30a of the sheet-like connecting body 30 is bonded to the surface of the vicinity of the end portion 26b of the winding start side guide belt 26 by the tape body 31 having the same characteristics as described above. In addition, the end portion 30b of the sheet-like connecting body 30 is bonded to the surface of the vicinity of the start end portion 13a1 of the glass film 13 by the tape body 32 having the same characteristics as described above. Therefore, the sheet-like connecting body 30 is in a state of only crossing the surface on the side of the winding start side guide tape 26 and the glass film 13. Further, the winding start side guide belt 26, the glass film 13 and the sheet-like connecting body 30 are arranged so as to be centered on the center line M with respect to the center in the width direction (the center line M shown in FIG. 6). The sides become symmetrical. The sheet-like connecting body 30 is preferably a resin film having a rectangular shape in plan view, but the shape and material of the flat surface are not particularly limited.

In the example shown in Fig. 5, the starting end portion 23a of the protective sheet 23 is fixed at a position on the side of the starting end portion 26a of the intermediate portion in the longitudinal direction of the winding start side guide belt 26, but it is preferable. The end portion 26b of the intermediate portion in the longitudinal direction of the winding start side guiding belt 26 At the side position, the start end portion 23a of the protective sheet 23 is fixed. Specifically, it is preferable to fix the protective sheet 23 on the winding start side guide belt 26 after it is confirmed that the winding start side guide belt 26 is wound around the winding core 24 without winding deviation. According to this, it is possible to wind the protective sheet 23 without winding deviation even if it is led by the winding start side guide belt 26, and it is possible to obtain the advantage that the length of the protective sheet 23 can be shortened and the amount of use thereof can be reduced. .

Further, as the protective sheet 23, a resin film of the same type as the protective sheet 15 of the mother glass roll 17 or a resin film having a smaller amount of expansion and contraction than the protective sheet 15 of the mother glass roll 17 can be used.

The manufacturing aspect of the mother glass roll 25 with the guide tape of the peripheral structure of the winding core 24 described above will be described in more detail with reference to FIG. As shown in FIG. 4, the glass film 13 which is unwound from the mother glass roll 17 at the unwinding position 21 is fed to the winding position 22 while being guided by a plurality of rollers 33 functioning as a tension roller. . In this case, in the unwinding position 21, the glass film 13 is separated from the protective sheet 15, and the protective sheet 15 is wound into a sheet roll 34. On the other hand, at the winding position 22, the protective sheet 23 which is unwound from the new sheet roll 35 is overlapped on the outer peripheral surface of the glass film 13 so that the protective sheet 23 is always the outermost layer, and is wound around the winding core 24. Winding.

In the winding position 22, when the winding length of the glass film 13 reaches a predetermined length, the glass film 13 is cut in the width direction by a cutting device (not shown). Then, at the cut end of the glass film 13 The beginning portion of the guide tape (hereinafter referred to as the winding end side guide tape) disposed outside the drawing on the winding end side is bonded to the tape body having the same characteristics as described above, and the two are connected to each other. In this case, the connection structure of the winding end side guide belt and the glass film 13 is preferably the same as that shown in Fig. 6 described above. Further, the winding end side guide belt is also wound around the periphery of the winding core 24 in the glass film 13. At the winding position 22, when the winding length of the protective sheet 23 reaches a predetermined length, the cutting is performed in the width direction, and the protective sheet 23 is formed to have a length that can cover all of the outermost peripheral surface of the glass film 13. Just fine. In detail, the end portion of the protective sheet 23 may be aligned with or beyond the end portion of the glass film 13; if it is beyond the end portion, the end portion of the leading end of the winding end tape may be further exceeded or not Exceeded.

As described above, in the guide tape coupling winding step A2, the start end portion 26a of the winding start side guide tape 26 coupled to the glass film 13 is fixed to the winding core 24, and the start end portion 23a of the protective sheet 23 is fixed to Since the intermediate portion in the longitudinal direction of the start side guide belt 26 is wound, the winding operation of the glass film 13 is properly restrained. Therefore, the feeding of the glass film 13 toward the winding position 22 can be induced along the correct path orthogonal to the axial center of the winding core 24, and a suitable tension can be applied to the glass film 13. As a result, the initial operation for correcting the large winding deviation occurring in the mother glass roll 17 can be appropriately performed.

Next, the resizing winding step A3 is carried out by the roll-to-roll method of the aspect illustrated in Fig. 7. As shown in FIG. 7, in the resizing winding step A3, the following processing is performed, that is, one side is retreating The mother glass roll 25 to which the guide tape is attached is unwound around the position 36, and after the glass film 13 is resized at the resizing position 37, the resized glass film 46 is again wound around the protective sheet 39 at the winding position 38. The circumference of the winding core 40 is wound into a roll shape, thereby producing a glass roll 41 with a retracted guide tape. In the unwinding position 36 and the winding position 38, since substantially the same processing as the above-described guide belt coupling winding step A2 is performed, detailed description of the processing common to the two steps A2 and A3 will be omitted.

In the same manner as the above-described cutting device 2, the resizing device 42 is provided with the transporting means 43, the local heating means 44, and the cooling means 45, and the glass film 13 is fed toward the downstream side by the transport means 43. The glass film 13 is caused to generate thermal stress. Thereby, the unnecessary portions of both end portions in the width direction of the glass film 13 are removed by laser cutting, and the width of the glass film 13 is adjusted to a predetermined width. Then, the resized glass film 46 is sent to the winding position 38, and the resizing winding step A3 is performed. In this case as well, in the state shown in the figure, the glass film 46 which is wound together with the new protective sheet 39 as the glass roll 41 attached to the adjusted guide tape has been joined to the winding start side guide. Leading belt 47. In this case, the entire length of the winding start side guide belt 47 (the winding end side guide belt is also the same) is preferably a conveyance path from the unwinding position 36 to the winding position 38 as shown in FIG. The full length is longer.

In detail, the winding start of the glass roll 41 here is the winding start side guide tape 47 and the glass film 13 before the resizing. In the state of being connected to each other, the connection structure of the two 47 and 13 in this state is preferably the same as that shown in Fig. 6 described above. In other words, as shown in FIG. 6, the glass film 13 before resizing is subjected to laser cutting along the cutting predetermined line X at both end portions in the width direction to form a resized glass film 46. The length Wc in the width direction of the resized glass film 46 is the same as or substantially the same as the length W1 in the width direction of the winding start side guide tape 47. In this case, the winding start side guide belt 47 and the glass film 13 (46) are connected to each other by the sheet-like connecting body 48 having the shortest length in the width direction. Therefore, there is a sufficient gap between the end portion 47b of the winding start side guide tape 47 and the start end portion 13a1 (46a1) of the glass film 13 (46). This gap can be effectively utilized to initiate the aforementioned laser cutting. Therefore, smooth and reliable laser cutting can be performed. The winding start side guide belt 47 of the glass roll 41 obtained in the step A3 here can be shared with the winding end side guide belt of the glass roll 25 obtained in the previous step A2.

The attachment structure of the winding start side guide belt 47 to the winding core 40 and the attachment structure of the new protective sheet 39 to the winding start side guide belt 47 are the same as those shown in Fig. 5 described above. Then, the main components of the components common to the two steps A2 and A3 are indicated by the symbols placed in parentheses in FIG. 5, and a detailed description thereof will be omitted.

As described above, the resizing winding step A3 is the same as the above-described guide belt coupling winding step A2 because the start end portion 47a of the winding start side guide belt 47 is fixed to the winding core 40, and is protected. The start end portion 39a of the sheet 39 is fixed in the longitudinal direction of the winding start side guide belt 47. The intermediate portion is complemented by the large winding deviation correction in the above-described guide belt coupling winding step A2, and the feeding of the resized glass film 46 toward the winding position 3 can be performed along a more accurate path. Induction. As a result, not only the second operation for correcting the large winding deviation occurring in the mother glass roll 17 can be more appropriately performed, but also the larger the glass film 13 of the mother glass roll 17 can be produced. When the cutting deviation disappears, the glass film 13 is accurately cut (resized) to a desired width to obtain a glass film 46 having a dimensional accuracy and a resized size.

Next, the winding step A4 for shipping will be described. This step A4 is carried out by the same roll-to-roll method as that exemplified in the above-described FIG. 4, and therefore, regarding the aspect of the roll-to-roll method, It is omitted here.

In the shipping winding step A4, as shown in Fig. 8, the start end portion 46a of the resized glass film 46 and the end portion 49b of the winding start side guide tape 49 are a pair of tape bodies. 50, the winding start side guide belt 49 can be used as the user of the resizing winding step A3 as the winding end side guide belt, or can be replaced with a new winding start side. Guide belt. Further, as shown in Fig. 8, the start end portion 49a of the winding start side guide belt 49 is fixed to the outer peripheral surface 51a of the winding core 51 by the tape body 52 having the same characteristics as described above, and protects the beginning end portion of the sheet 53. Also, 53a is fixed to the outer peripheral surface 51a of the winding core 51 by the tape body 54 having the same characteristics as described above. In this case, the protective sheet 53 is fixed to the outer peripheral surface 51a of the winding core 51 in a state exceeding the start end portion 49a of the winding start side guide belt 49, but the start end portion 53a and the roll of the protective sheet 53 are provided. It is preferable that the start end portion 49a around the start side guide belt 49 is fixed to the outer peripheral surface 51a of the winding core 51 by the tape bodies 52, 54 at the same place. In addition, the end portion of the glass film 46 is connected to the beginning end portion of the winding end side guide tape by a tape body, but the winding end side guide tape is also used in the above-described resizing roll. The user who takes the step A3 as the winding start side guide belt can also be replaced with a new winding end side guide belt.

As described above, in the shipping winding step A4, in addition to the winding start side guide belt 49, the protective sheet 53 is also fixed to the winding core 51, and the winding force of the winding core 51 can be directly transmitted to the protective sheet 53. . Therefore, the tension can be more reliably applied to the glass film 46 from the protective sheet 53, and as a result, the glass roll 55 for shipment which is more appropriately re-rolled can be obtained.

Therefore, by performing the above-described pre-steps A1 to A3, the winding step A4 is carried out, and the winding start side guide belt 49 and the winding end side guide belt and the winding are connected to the glass film 46. When the starting side guide tape 49 is fixed to the winding core 51 and the protective sheet 53 is fixed to the winding core 51, the glass film 46 and the protective sheet 53 are wound together and wound up in a roll shape around the winding core 51. Glass roll 55 for shipment.

In this case, in the shipping winding step A4, similar to the above-described guide belt connecting winding step A2 and the resizing winding step A3 (substantially the same as the aspect shown in FIG. 5 described above), the winding can be performed. The start end portion 49a around the start side guide belt 49 is fixed to the outer peripheral surface 51a of the winding core 51 by the tape body 52, and the start end portion 53a of the protective sheet 53 is fixed to the winding start side guide belt 49 by the tape body 54. The outer peripheral surface (may also be the inner peripheral surface) of the intermediate portion in the longitudinal direction.

According to this, the winding start side guide tape 49 and the winding end side guide tape are attached to the glass film 46, the winding start side guide tape 49 is fixed to the winding core 51, and the protective sheet 53 is fixed to the winding. In the state of the start side guide belt 49, the glass film 46 and the protective sheet 53 are wound together in a roll-shaped high-quality shipment glass roll 55 around the winding core 51.

FIG. 9 is a view showing an implementation state of a method of manufacturing a glass roll according to another embodiment of the present invention, and exemplifies an implementation state of the winding step A4 for shipping in each step. The other steps A1 to A3 are the same as those of the method of manufacturing the glass roll of the above-described embodiment, and the illustration and description thereof will be omitted.

As shown in Fig. 9, in the shipping winding step A4 of the other embodiment, the surface 56x having the adhesive surface of the laminated film 56 is bonded to the one surface 46x of the resized glass film 46. At the winding position 57, the protective sheet 53 is wound between the other surface 56y of the laminated film 56 and the other surface 46y of the glass film 46 at the winding position 57. In this case, the winding start side guide tape 49 and the winding end side guide tape are attached to the glass film 46, and the start end portion 49a of the winding start side guide tape 49 is fixed to the outer periphery of the winding core 51. The surface 51a is the same as the above-described embodiment, and the same reference numerals are used for the same components, and the illustration and description thereof are omitted. Further, in this step A4, the protective sheet 53 is not fixed to the winding core 51 but is sandwiched between the glass film 46 and the laminated film 56. The advantage obtained by this method is that the amount of use of the protective sheet 53 can be reduced, and winding deviation and winding too tight can be prevented. In the step A4, the foregoing embodiment Similarly, the start end portion 53a of the protective sheet 53 and the start end portion 49a of the winding start side guide belt 49 may be fixed to the outer peripheral surface 51a of the winding core 51 together. Further, the laminated film 56 may have an adhesive surface not only on one surface 56x but also on the other surface 56y.

By the winding step A4 for the shipment, the winding start side guide belt 49 and the winding end side guide belt are coupled to the glass film 46, and the laminate is laminated on one surface 46x of the glass film 46. The film 56, the winding start side guide tape 49 is fixed to the winding core 51, and the protective sheet 53 is not fixed to the winding core 51 and is sandwiched between the other surface 46y of the glass film 46 and the laminated film 56, and in this state, A high-quality shipment glass roll 58 wound in a roll shape around the winding core 51 is obtained by the glass film 46 and the protective sheet 53 together.

Further, in the above embodiment, the guide belt coupling winding step A2, the resizing winding step A3, and the shipping winding step A4, as shown in Figs. 4 and 7, use a plurality of rollers 33 to form a glass film. Although the conveyance path of 13 is a bypass, the number of the rollers 33 may be reduced, and the glass film 13 may be conveyed without bypassing.

Further, in the above-described embodiment, in the winding step A4 for shipment, the connection structure of the winding start side guide tape 49 (and the winding end side guide tape) and the resized glass film 46 is Although the sheet-like connecting body is not used, a sheet-like connecting body may be used as needed.

A1‧‧‧Basic winding steps

A2‧‧‧ Guide belt joint winding step

A3‧‧‧Resize winding step

A4‧‧‧Winding steps for shipment

Claims (10)

A method for producing a glass roll, comprising: a base winding step, a guide tape joining winding step, a resizing winding step, and a shipping winding step of forming a side winding step The glass film to be conveyed and the protective sheet are wound around the winding core to form a mother glass roll; the guiding tape is coupled and wound, and the mother glass roll is unwound, and the glass film is formed. a process of winding the periphery of the winding core together with the protective sheet, and a process of joining the guide tapes at both end portions in the longitudinal direction of the glass film, thereby producing a mother glass roll with a guide tape; the resizing roll In the winding step, the mother glass roll to which the guide tape is attached is unwound, and the glass film is wound around the winding core together with the protective sheet, and the glass film is cut into a predetermined width along the longitudinal direction. Thereby, the glass roll with the adjusted guide tape is prepared; the winding step for shipping is to rewind the glass of the adjusted guide tape , And it is wound around the glass sheet and the protective film together again wound core being rewound into a ship, thereby to produce a finished glass of shipment volume resizing attached guide tape. The method for producing a glass roll according to claim 1, wherein in the basic winding step, the glass film is not fixed to the winding core, and the protective sheet is fixed to the winding core to perform winding. The method of manufacturing a glass roll according to the first or second aspect of the invention, wherein the guide tape is coupled to the winding step and the resizing winding step, the guide tape is fixed to the core and the aforementioned The protective sheet is fixed to the aforementioned guide tape to perform winding. The method for producing a glass roll according to any one of claims 1 to 3, wherein in the winding step of shipping, the guide tape is fixed to the core and the protective sheet is fixed to The winding core is used to perform winding. The method for producing a glass roll according to any one of claims 1 to 3, wherein in the winding step of shipping, the guide tape is fixed to the core and the protective sheet is fixed to The aforementioned guiding belt performs winding. The method for producing a glass roll according to any one of claims 1 to 3, wherein in the winding step of shipping, a laminated sheet is bonded to one surface of the glass film, and the guide is used The lead tape is fixed to the winding core, and the protective sheet is sandwiched between the other surface of the glass film and the laminated sheet to be wound. The method for producing a glass roll according to claim 6, wherein in the winding step of shipping, the protective sheet is not fixed to the winding core to perform winding. A glass roll that winds a glass film and a protective sheet together The glass roll for winding around in a roll shape is characterized in that a guide tape is attached to the glass film, the guide tape is fixed to the winding core, and the protective sheet is fixed to the winding core. A glass roll is a glass roll for winding a glass film and a protective sheet around a winding core in a roll shape, wherein the glass film is connected to a guide tape, and the guide tape is fixed. The core is wound and the protective sheet is fixed to the guide tape. A glass roll is a glass roll for winding a glass film and a protective sheet around a winding core in a roll shape, wherein the glass film is connected to a guide tape, and the glass film is The laminated film is attached to the core, and the guide tape is fixed to the winding core, and the protective sheet is not fixed to the winding core and is sandwiched between the other surface of the glass film and the laminated film.