JP6579374B2 - GLASS ROLL MANUFACTURING METHOD AND GLASS ROLL - Google Patents

Description

  The present invention relates to a method for producing a glass roll and a glass roll obtained thereby when the step of winding the glass film into a roll around a core is performed a plurality of times.

  As is well known, thin display devices such as liquid crystal displays and organic EL displays, and mobile devices such as smartphones and tablet PCs that are rapidly spreading in recent years are required to be lightweight. Therefore, as a glass substrate employed in these devices, a glass film thinned into a film is practically used. This glass film has a substantially rectangular shape or the like at the final product stage, but is handled as a belt-like form at a stage such as various processing steps including the previous manufacturing process.

  Since this type of glass film has appropriate flexibility, in consideration of convenience at the time of handling, storage or transportation, the form of a glass roll wound in a roll around the core It is customary to do. Therefore, if the glass film is in the form of a glass roll, not only is it easy to handle, but also the efficiency of work can be improved when various treatments are performed.

  By the way, this type of glass film may be subjected to a process of being wound around a core as a glass roll a plurality of times between being molded by a glass manufacturer or the like and shipped.

  As an example, Patent Document 1 discloses a temporary winding process for producing a mother glass roll by unwinding a mother glass roll by winding a glass film conveyed while being formed around a core together with a protective sheet. In addition, it is disclosed to execute a main winding process for producing a product glass roll by applying sufficient tension to the glass film and winding the glass film together with the protective sheet again.

  Further, this document discloses that a step of rewinding the glass film may be included after the main winding step.

JP 2013-14441 A

  However, the manufacturing method of the glass roll disclosed by patent document 1 is performing performing this winding process after performing a temporary winding process, and performing a rewinding process after that depending on the case. Only.

  Therefore, in order to make a glass roll shipped as a final product from a glass manufacturer or the like with high quality with sufficiently small winding deviation and sufficiently good dimensional accuracy, it is not sufficient to perform only the processing in each of the above steps. Become.

  In view of the above, the problem of the present invention is that a plurality of types of winding processes executed from the time the glass film is formed to the time of shipment and the processing in each process are appropriate, This is to improve the quality of the glass roll.

  The present invention, which was created to solve the above problems, includes a former winding process for producing a mother glass roll by winding a glass film that is being conveyed while being wound around a core together with a protective sheet, Unroll the glass roll, and then wind the glass film around the core again with the protective sheet, and the process of connecting the leader to both ends of the glass film in the longitudinal direction, thereby producing a mother glass roll with a leader. By unwinding the leader connection winding process and the mother glass roll with the leader, and winding the glass film around the core again with the protective sheet, by cutting the glass film along the longitudinal direction to a predetermined width, Resize winding process to produce a resized glass roll with leader, and roll a resized glass roll with leader The glass film is wound around the core again with the protective sheet, and rewound for shipping, and is characterized by having a shipping winding process for producing a glass roll with a resized leader for shipping. . Note that the above-described leader coupling winding process, resizing winding process, and shipping winding process are all performed by a so-called roll-to-roll system (hereinafter referred to as a roll-to-roll system). Is preferred.

  According to such a structure, the winding process performed after a glass film is shape | molded until it is shipped becomes said four types, and an appropriate process is each performed in these winding processes. Therefore, a shipping glass roll obtained by completing all the winding processes and obtained as a final product, that is, a glass roll with a resized leader for shipping, has sufficiently small winding deviation and sufficiently good dimensional accuracy. obtain. Therefore, it is possible to improve the quality of the shipping glass roll.

  In the above method, in the original winding step, it is preferable to perform winding without fixing the glass film to the core and fixing the protective sheet to the core.

  In this way, in the original winding process, since the protective sheet is fixed to the core while the glass film is not fixed to the core, tension is directly applied to the glass film from the core. In addition, the glass film is not unduly restrained during winding. For this reason, it is difficult for the molded part to be adversely affected from the winding side while the glass film is being molded, and problems such as unjustly varying the thickness of the glass film are less likely to occur. Moreover, the present situation is that the glass film is conveyed while meandering and wound up as a mother glass roll, but the meandering of the glass film is not forcibly corrected. This also makes it difficult for a situation that adversely affects the molding of the glass film to occur, and also makes it difficult for the glass film to break or be damaged during winding due to forced correction.

  In the above method, it is preferable that the leader is fixed to the core and the protective sheet is fixed to the leader in the leader coupling winding process and the resize winding process.

  In this way, in the leader connection winding process, the leader connected to the glass film is fixed to the core and the protective sheet is fixed to the leader, so that the winding operation of the glass film is accurately restrained. . Therefore, the feeding of the glass film to the winding position is guided along an accurate path, and an appropriate tension can be applied to the glass film. As a result, the first operation for correcting a large winding deviation occurring in the mother glass roll is appropriately performed. Moreover, since the protective sheet is fixed to the leader, the winding length of the protective sheet can be shortened and the amount of use can be reduced as compared with the case where the protective sheet is fixed to the core. Also, in the resize winding process, the leader is fixed to the core and the protective sheet is fixed to the leader in the same manner as the previous leader coupling winding process, so that a large winding deviation is corrected in the immediately preceding process. In combination with this, the feeding of the glass film to the winding position is guided along a more precise path. As a result, not only is the second operation for correcting the large winding deviation that occurred in the mother glass roll more appropriately performed, but also disappears the large cutting deviation that occurred in the glass film of the mother glass roll, It becomes possible to accurately cut (resize) the glass film to a required width.

  In the above method, it is preferable that the winding is performed by fixing the leader to the core and fixing the protective sheet to the core in the shipping winding process.

  If it does in this way, since the winding-up force of a core is directly transmitted to a protection sheet in the winding-up process for shipment, tension can be made to act on a glass film more reliably from a protection sheet. As a result, a shipping glass roll that has been rewound more appropriately can be obtained.

  Instead of this, in the take-up process for shipping, the leader is fixed to the core and the protective sheet is fixed to the leader, and the take-up is executed in the same manner as the above-described leader coupling take-up process and resize take-up process. It may be.

  Even in this case, it is possible to obtain a shipping glass roll that has been rewound more appropriately.

  Further, instead of these, in the shipping winding process, a laminating sheet is attached to one surface of the glass film, the leader is fixed to the core, and the protective sheet is attached to the other surface of the glass film and the laminating sheet. Winding may be executed by interposing between them.

  In this way, the protective sheet is interposed between the surface of the glass film and the surface of the laminate sheet, so that the protective sheet is compared with the case where the protective sheet is interposed between the surfaces of the two glass films. Thus, the protective sheet is less likely to slip. As a result, winding deviation and tightening are less likely to occur effectively, and a properly rewound shipping glass roll can be obtained.

  In the shipping winding process in this case, the winding may be performed without fixing the protective sheet to the core.

  If it does in this way, while making it difficult to produce the slip of a protective sheet as mentioned above, the winding length of a protective sheet can be shortened and the usage-amount can be reduced.

  In addition, the glass roll which finished the winding-up process for shipment in the above manufacturing method is characterized by having the structure shown below.

  That is, the first glass roll is a shipping glass roll in which a glass film is wound around a core together with a protective sheet, and a leader is connected to the glass film and the leader is attached to the core. It is fixed and the protective sheet is fixed to the core. In the production of the first glass roll, it is not always necessary to perform the four types of winding processes described above.

  The second glass roll is a shipping glass roll in which a glass film is wound around a core together with a protective sheet, and a leader is connected to the glass film, and the leader is attached to the core. It is fixed and the protective sheet is fixed to the leader. It should be noted that it is not always necessary to perform the four types of winding processes described above when manufacturing the second glass roll.

  Furthermore, the third glass roll is a shipping glass roll in which the glass film is wound around the core together with the protective sheet, and a leader is connected to the glass film, The laminate sheet is attached, the leader is fixed to the core, and the protective sheet is interposed between the other surface of the glass film and the laminate sheet without being fixed to the core. Is a feature. It should be noted that it is not always necessary to perform the above-described four types of winding processes when manufacturing the third glass roll.

  According to the present invention, the types of a plurality of winding processes executed between the time when the glass film is molded and the time when the glass film is shipped and the processing in each process become appropriate, and the quality of the glass roll for shipping is high. Is achieved.

It is a flowchart which shows the procedure or flow of the manufacturing method of the glass roll which concerns on embodiment of this invention. It is a schematic front view which shows the implementation condition of the original winding process in the manufacturing method of the glass roll which concerns on embodiment of this invention. It is a principal part perspective view which shows the attachment structure of the glass film and protective sheet with respect to a core at the time of implementation of the original winding process in the manufacturing method of the glass roll which concerns on embodiment of this invention. It is a schematic front view which shows the implementation condition of the leader connection winding process in the manufacturing method of the glass roll which concerns on embodiment of this invention, and the winding process for shipment. It is a principal part perspective view which shows the attachment structure of the leader and protection sheet with respect to a core in the implementation of the leader connection winding process in the manufacturing method of the glass roll which concerns on embodiment of this invention. It is a principal part schematic plan view which shows the preferable connection structure of a leader and a glass film in the implementation of the leader connection winding process in the manufacturing method of the glass roll which concerns on embodiment of this invention. It is a schematic front view which shows the implementation condition of the resize winding process in the manufacturing method of the glass roll which concerns on embodiment of this invention. It is a principal part perspective view which shows the attachment structure of the leader and protection sheet with respect to a winding core in the implementation of the winding-up process for shipment in the manufacturing method of the glass roll which concerns on embodiment of this invention. It is a principal part schematic front view which shows the other example of the winding method of a glass film and a protective sheet in the implementation of the winding process for shipment in the manufacturing method of the glass roll which concerns on embodiment of this invention.

  Hereinafter, the manufacturing method of the glass roll which concerns on embodiment of this invention is demonstrated with reference to an accompanying drawing.

  FIG. 1 is a flowchart showing a procedure of a glass roll manufacturing method according to an embodiment of the present invention. As shown in the figure, the glass roll manufacturing method includes an original winding process A1, a leader coupling winding process A2, a resize winding process A3, and a shipping winding process A4.

  In these winding steps A1 to A4, the following processing is generally executed. That is, in original winding process A1, a mother glass roll is produced by winding the glass film conveyed while shape | molding around a winding core with a protective sheet. Moreover, in leader connection winding process A2, the process which unwinds the above-mentioned mother glass roll, winds a glass film around a core again with a protection sheet, and the process which connects a leader to the longitudinal direction both ends of a glass film To produce a mother glass roll with a leader. Furthermore, in the resize winding step A3, the glass film is cut along the longitudinal direction while unwinding the mother glass roll with a leader described above, and winding the glass film around the core again with the protective sheet. Thus, a resized glass roll with a leader is produced. In addition, in the shipping winding process A4, the above-mentioned resized glass roll with a leader is unwound, the glass film is wound around the core again with the protective sheet, and then resized for shipping. Make a glass roll with a finished leader.

  And by performing such four types of winding processes A1-A4, the glass roll for shipping obtained as a final product, that is, the glass roll with a resized leader for shipping, has a sufficiently small winding deviation and dimensions. The accuracy can be high enough.

  Hereinafter, each process performed in each of these four types of winding processes A1 to A4 will be described in detail.

  FIG. 2 is a schematic front view showing a situation in which the original winding process A1 is being performed. As shown in the figure, the original winding step A1 is performed by winding the glass film G formed by the forming apparatus 1 after being cut into a predetermined width by the cutting apparatus 2 and existing at the downstream end of the glass film conveyance path. Winding is executed at position 3.

  In the present embodiment, the molding apparatus 1 executes an overflow downdraw method. More specifically, the molding apparatus 1 includes a molding zone 4, a slow cooling zone 5, and a cooling zone 6 in order from above. In addition, the shaping | molding apparatus 1 may perform other downdraw methods, such as a slot downdraw method and a redraw method, and may also perform a float method.

  In the molding zone 4, the molten glass G 0 overflowing from the top of the molded body 7 is fused at the lower end thereof and allowed to flow down, thereby forming a plate-like glass film G from the molten glass G 0. The molded glass film G is subjected to strain removal in the slow cooling zone 5 and cooled to near room temperature in the cooling zone 6. A plurality of roller groups 8 are disposed in the slow cooling zone 5 and the cooling zone 6, and both end portions in the width direction of the glass film G are guided downward by these roller groups 8.

  The molded glass film G is bent in a substantially horizontal direction by a plurality of direction changing roller groups 9 supported from below at a lower position of the molding apparatus 1 and then sent to the cutting apparatus 2 while maintaining its posture. Note that the direction changing roller group 9 is not applied when the forming apparatus 1 performs the float method.

  The cutting device 2 cuts and removes the ineffective portions (ear portions) Gx formed at both ends in the width direction of the glass film G. The ineffective portion Gx is relatively thicker than the effective portion Gy at the center in the width direction of the glass film G.

  More specifically, the cutting device 2 irradiates a laser beam L to a conveying means 10 that conveys the glass film G to the downstream side in a substantially horizontal posture, and the glass film G placed on the conveying means 10. A local heating means 11 for performing local heating and a cooling means 12 for injecting the refrigerant W are provided. And while sending the glass film G downstream by the conveyance means 10, a thermal stress is produced by the expansion | swelling by local heating and the shrinkage | contraction by cooling of a refrigerant | coolant to the glass film G, and the ineffective part Gx of the glass film G is laser-cleaved. Remove. Then, the effective part Gy (henceforth glass film 13) of the glass film G is sent to the winding position 3, and original winding process A1 is performed.

  In the original winding process A1, the protective sheet 15 continuously unwound from the sheet roll 14 is wound around the core 16 while being stacked on the outer peripheral surface of the glass film 13, whereby the mother glass roll 17 is manufactured. To proceed. In this case, the protective sheet 15 unwound from the sheet roll 14 is guided to an overlapping position 19 with the glass film 13 by a roller (free roller) 18. The roller 18 serves as a tension roller that applies tension to the protective sheet 15.

  Here, the glass 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 1 μm or more, 5 μm or more, or 10 μm or more. Moreover, the length of the width direction (direction parallel to the axis of the core 16) of the glass film 13 is 100 mm or more, 300 mm or more, or 500 mm or more. The matter regarding the glass film 13 demonstrated here is the same also in subsequent process A2-A4.

  On the other hand, the thickness of the protective sheet 15 is 1000 μm or less, 500 μm or less, or 300 μm or less, and is 10 μm or more or 20 μm or more. Moreover, the length of the width direction of the protective sheet 15 may be shorter or longer than the length of the glass film 13 in the width direction, or may be the same. In this case, as the protective sheet 15, for example, an ionomer film, polyethylene film, polypropylene film, polyvinyl chloride film, polyvinylidene chloride film, polyvinyl alcohol film, polyester film, polycarbonate film, polystyrene film, polyacrylonitrile film, ethylene vinyl acetate Organic resin films (synthetic resin films) such as copolymer films, ethylene-vinyl alcohol copolymer films, ethylene-methacrylic acid copolymer films, nylon (registered trademark) films (polyamide films), polyimide films, and cellophane Can be used. The matters relating to the protective sheet 15 described here are the same in the subsequent steps A2 to A4.

  In this original winding process A1, as shown in FIG. 3, the starting end 15a on the winding start side of the protective sheet 15 is fixed to the outer peripheral surface 16a of the core 16 by a tape body 20 such as an adhesive tape or an adhesive tape. Yes. On the other hand, the start end portion 13 a on the winding start side of the glass film 13 is not fixed to the core 16 and is not fixed to the protective sheet 15. Therefore, in the process in which the glass film 13 is wound around the core 16 as a mother glass roll 17 together with the protective sheet 15, the glass film 13 has an inner peripheral surface 15 x and an outer peripheral surface 15 y of the protective sheet 15. It will be in the state only to be inserted between.

  In this original winding process A1, it is preferable to use a resin film as the protective sheet 15. In this way, it is possible to produce a mother glass roll 17 that is not loosened without giving an appropriate tension to the protective sheet 15 and without giving a large tension to the glass film 13. In this case, the tensile elastic modulus of the protective sheet 15 can be 1 to 5 GPa.

  In addition, in this original winding process A1, the width direction both ends of the protective sheet 15 protrude from the width direction both ends of the glass film 13 from a viewpoint of protecting the cut end surface in the width direction both ends of the glass film 13. However, it is not limited to such an embodiment. That is, both ends in the width direction of the glass film 13 may protrude from both ends in the width direction of the protective sheet 15, or both ends in the width direction of the protective sheet 15 and both ends in the width direction of the glass film 13 are aligned. May be. The matter regarding the width direction both ends of the glass film 13 and the protective sheet 15 demonstrated here is the same in subsequent process A2-A4.

  As described above, in the original winding process A1, a large tension is not directly applied to the glass film 13 from the core 16. Moreover, since the glass film 13 is not linked in relation to the protective sheet 15, the glass film 13 is not unduly restrained during winding. Therefore, while the glass film 13 (G) is being molded by the molding apparatus 1, the glass film 13 (G) is less likely to be adversely affected from the winding position 3 side. It becomes difficult to occur. Moreover, the glass film 13 (G) may be conveyed while meandering on the conveying means 10 to reach the winding position 3, but the meandering of the glass film 13 (G) is not forcibly corrected. Therefore, the molding of the glass film 13 (G) is hardly affected by this as well. Further, when the meandering of the glass film 13 (G) is forcibly corrected, a stress such as torsional force acts on the glass film 13 at the time of winding, causing damage or breakage. However, such factors can be effectively eliminated. In the original winding process A1, as a compensation for enjoying the above-described excellent effects, a large winding shift and a cutting shift are generated in the mother glass roll 17 obtained in the process A1.

  Next, leader connection winding process A2 is performed by adopting the roll-to-roll system of the aspect illustrated in FIG. As shown in the figure, in this leader connection winding process A2, the glass film 13 is again wound together with the protective sheet 23 at the winding position 22 while unwinding the mother glass roll 17 at the unwinding position 21. A process for producing a mother glass roll 25 with a leader is performed by winding it around in a roll. In this case, in the state shown in the drawing, a leader (hereinafter referred to as a winding start side leader) 26 is already connected to the starting end portion 13a1 on the winding start side of the glass film 13 wound as the mother glass roll 25 with a leader. .

  More specifically, as shown in FIG. 5, the start end portion 13 a 1 of the glass film 13 and the end portion 26 b of the winding start side leader 26 are formed by a tape body (a pair of front and back tape bodies) 27 such as an adhesive tape or an adhesive tape. It is connected. The length in the width direction of the glass film 13 is the same as the length in the width direction of the winding start side leader 26 (the same applies to the winding end side leader to be described later). , 26 extend in a straight line at both ends in the width direction. The start end portion 26 a of the winding start side leader 26 is fixed to the outer peripheral surface 24 a of the core 24 by a tape body 28 having the same characteristics as described above. The winding start side leader 26 is fixed to the core 24 so as to extend accurately in a direction perpendicular to the axis of the core 24. Further, the start end portion 23a of the protective sheet 23 is fixed to the outer peripheral surface 26y (may be an inner peripheral surface) of the winding start side leader 26 by a tape body 29 having the same characteristics as described above. In addition, it is preferable that the total length of the winding start side leader 26 (same for the winding end side reader described later) is longer than 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 main part schematic plan view showing a preferable connection structure between the winding start side leader 26 and the glass film 13. As shown in the figure, this connection structure is such that the width direction length W1 of the winding start side leader 26 is shorter than the width direction length W2 of the glass film 13, and the end portion of the winding start side leader 26 is shown. 26 b and the start end portion 13 a 1 of the glass film 13 are connected via the sheet-like connector 30. More specifically, the widthwise length W3 of the sheet-like connector 30 is made shorter than the widthwise length W1 of the winding start side leader 26. The starting end portion 30 a of the sheet-like connection body 30 is attached to the surface in the vicinity of the terminal end portion 26 b of the winding start side leader 26 with a tape body 31 having the same characteristics as described above. Moreover, the terminal part 30b of the sheet-like connection body 30 is stuck on the surface of the glass film 13 in the vicinity of the start end part 13a1 by a tape body 32 having the same characteristics as described above. Therefore, the sheet-like connection body 30 is in a state of being stretched over only one surface of the winding start side leader 26 and the glass film 13. And the winding start side leader 26, the glass film 13, and the sheet-like coupling body 30 are arranged so that it may become symmetrical on the both sides on the basis of all those width direction centers (centerline M shown in the figure). The sheet-like connector 30 is preferably a resin film having a rectangular shape in plan view, but the shape and material of the plan view are not particularly limited.

  In the example shown in FIG. 5, for the sake of convenience, the start end portion 23 a of the protective sheet 23 is fixed at a position closer to the start end portion 26 a side in the longitudinal direction intermediate portion of the winding start side leader 26. It is preferable to fix the start end portion 23a of the protective sheet 23 at a position closer to the end portion 26b side in the intermediate portion. Specifically, it is preferable to fix the protective sheet 23 to the winding start side leader 26 after confirming that the winding start side leader 26 has been wound around the core 24 without any winding deviation. In this way, not only is the protective sheet 23 taken up by the winding start side leader 26 without winding deviation, but there are also advantages such as shortening the protective sheet 23 and reducing its usage.

  As the protective sheet 23, the same type of resin film as the protective sheet 15 of the mother glass roll 17 may be used, or the amount of expansion and contraction with respect to the tension is smaller than that of the protective sheet 15 of the mother glass roll 17. May be used.

  An embodiment for producing the mother glass roll 25 with a leader having such a peripheral structure of the core 24 will be described in more detail with reference to FIG. As shown in the figure, the glass film 13 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 serving as tension rollers. In this case, at the unwinding position 21, the glass film 13 is separated from the protective sheet 15, and the protective sheet 15 is wound up as a sheet roll 34. On the other hand, at the winding position 22, the protective sheet 23 unwound from the new sheet roll 35 is superimposed on the outer peripheral surface of the glass film 13 so that the protective sheet 23 is always the outermost layer. It is wound around.

  At 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, the tape body of the same kind as the above is stuck to the cut end portion of the glass film 13 and the start end portion of the leader (not shown) arranged on the winding end side (hereinafter referred to as the winding end side leader). By connecting these both. In this case, the connection structure between the end-of-winding leader and the glass film 13 is preferably the same as that shown in FIG. The winding end leader is also wound around the core 24 following the glass film 13. In addition, when the winding length of the protective sheet 23 reaches a predetermined length at the winding position 22, the protective sheet 23 is cut in its width direction. It is sufficient if it is long enough to cover. Specifically, the end portion of the protective sheet 23 may be aligned with the end portion of the glass film 13 or may protrude from the end portion. It may or may not protrude from the end portion.

  As described above, in this leader connection winding step A2, the start end portion 26a of the winding start side leader 26 connected to the glass film 13 is fixed to the core 24, and the start end portion 23a of the protective sheet 23 is set to the winding start side leader. Since it fixes to the longitudinal direction intermediate part of 26, the winding-up operation | movement of the glass film 13 is restrained correctly. Accordingly, the feeding of the glass film 13 to the winding position 22 is guided along an accurate path perpendicular to the axis of the core 24 and an appropriate tension can be applied to the glass film 13. Become. As a result, the first operation for correcting a large winding deviation occurring in the mother glass roll 17 is appropriately performed.

  Next, the resize winding process A3 is performed by adopting the roll-to-roll method of the aspect illustrated in FIG. As shown in the figure, in this resize winding process A3, after unwinding the leader glass roll 25 with the leader at the unwinding position 36, the glass film 13 is resized at the resize position 37, and then at the winding position 38. Then, the resized glass film 46 is again wound around the core 40 together with the protective sheet 39 into a roll shape, whereby a process for producing the resized glass roll 41 with a leader is performed. In the unwinding position 36 and the winding position 38, basically the same process as the above-described leader connection winding process A2 is performed. Therefore, the processes common to both processes A2 and A3 are described in detail. Omitted.

  Similar to the cutting device 2 described above, the resizing device 42 installed at the resizing position 37 includes a transport means 43, a local heating means 44, and a cooling means 45. The transport means 43 moves the glass film 13 downstream. Thermal stress is generated in the glass film 13 while feeding to the side. Thereby, unnecessary portions at both ends in the width direction of the glass film 13 are removed by laser cutting, and the width of the glass film 13 is resized to a predetermined width. Thereafter, the resized glass film 46 is sent to the winding position 38, and the resize winding process A3 is executed. Also in this case, in the state shown in the drawing, the winding start side leader 47 is already connected to the glass film 46 wound up with the new protective sheet 39 as the resized glass roll 41 with a leader. In this case as well, the total length of the winding start leader 47 (same as the winding end leader) is made longer than the total length of the transport path from the unwinding position 36 to the winding position 38 shown in FIG. preferable.

  More specifically, at the beginning of winding of the glass roll 41 here, the winding start side leader 47 and the glass film 13 before resizing are in a connected state. The structure is preferably the same as the embodiment shown in FIG. That is, as shown in FIG. 6, the glass film 13 before resizing becomes a resized glass film 46 by laser cutting along the planned cutting lines X at both ends in the width direction. The width direction length Wc of the resized glass film 46 is the same as or substantially the same as the width direction length W1 of the winding start side leader 47. In this case, the winding start side leader 47 and the glass film 13 (46) are connected via the sheet-like connecting body 48 having the shortest width direction length. Therefore, a sufficient gap exists between the terminal end portion 47b of the winding start side leader 47 and the starting end portion 13a1 (46a1) of the glass film 13 (46). This gap is effectively used to start the radar cleaving described above. Therefore, smooth and reliable laser cutting is possible. The winding start leader 47 of the glass roll 41 obtained in the step A3 here may share the winding end leader of the glass roll 25 obtained in the immediately preceding step A2.

  Note that the attachment structure of the winding start side leader 47 to the core 40 and the attachment structure of the new protective sheet 39 to the winding start side leader 47 are the same as the embodiment shown in FIG. Therefore, the main parts of the constituent elements common to both steps A2 and A3 are given parenthesized reference numerals in FIG. 5 and detailed description thereof is omitted here.

  As described above, in the resize winding process A3, the start end portion 47a of the winding start side leader 47 is fixed to the core 40, and the start end portion 39a of the protective sheet 39 Since it is fixed to the intermediate portion in the longitudinal direction of the winding start side leader 47, the winding position of the resized glass film 46 is combined with the fact that the large winding deviation is corrected in the above-described leader coupling winding process A2. The feed to 3 is guided along a more accurate path. As a result, not only the second operation for correcting the large winding deviation that has occurred in the mother glass roll 17 is performed more appropriately, but also the large cutting deviation that has occurred in the glass film 13 of the mother glass roll 17 disappears. In addition, the glass film 13 can be accurately cut (resized) to a required width to obtain a resized glass film 46 with good dimensional accuracy.

  Next, the shipping winding process A4 will be described. Since the process A4 is executed by adopting the same roll-to-roll system as the embodiment illustrated in FIG. 4, the roll-to-roll system is used. The description of this aspect is omitted here.

  In the shipping winding process A4, as shown in FIG. 8, the starting end portion 46a of the resized glass film 46 and the terminal end portion 49b of the winding start side leader 49 are connected by a pair of tape bodies 50. As the winding start side leader 49, the one used as the winding end side leader in the resize winding step A3 described above may be used as it is, or may be replaced with a new winding start side leader. Furthermore, as shown in the figure, the start end portion 49 a of the winding start side leader 49 is fixed to the outer peripheral surface 51 a of the core 51 by a tape body 52 having the same characteristics as described above, and the start end portion 53 a of the protective sheet 53. Also, it is fixed to the outer peripheral surface 51a of the winding core 51 with a tape body 54 having the same characteristics as described above. In this case, the protective sheet 53 is fixed to the outer peripheral surface 51 a of the core 51 in a state of covering the start end portion 49 a of the winding start side leader 49, but the start end portion 53 a of the protection sheet 53 and the winding start side reader 49 are covered. Is preferably fixed to the outer peripheral surface 51a of the core 51 by tape bodies 52 and 54, respectively, at the same location. Further, the end portion of the glass film 46 is connected to the start end portion of the end-of-winding leader (not shown) by a tape body, and this end-of-winding leader is also the start-side leader in the resize winding step A3 described above. What has been used as can be used as it is, or can be replaced with a new end-of-wind leader.

  As described above, in this shipping winding process A4, in addition to the winding start side leader 49, the protective sheet 53 is also fixed to the winding core 51, so that the winding force of the winding core 51 is directly applied to the protective sheet 53. Communicated. Therefore, tension can be applied more reliably from the protective sheet 53 to the glass film 46, and accordingly, a shipping glass roll 55 that has been rewound more appropriately can be obtained.

  Therefore, after the above-described previous steps A1 to A3 are executed, the winding start step A4 is executed, whereby the winding start side leader 49 and the winding end side leader are connected to the glass film 46, and A high-quality glass film 46 is wound around the core 51 together with the protective sheet 53 in a state where the winding-side leader 49 is fixed to the core 51 and the protective sheet 53 is fixed to the core 51. A shipping glass roll 55 is obtained.

  In this case, in the take-up winding process A4, the winding start side leader 49 is substantially the same as the above-described leader coupling winding process A2 and the resize winding process A3 (substantially similar to the embodiment shown in FIG. 5 described above). Is fixed to the outer peripheral surface 51a of the winding core 51 by the tape body 52, and the starting end portion 53a of the protective sheet 53 is fixed to the outer peripheral surface (even the inner peripheral surface) of the intermediate portion in the longitudinal direction of the winding start side leader 49. May be fixed by the tape body 54.

  In this way, the winding start side reader 49 and the winding end side reader are connected to the glass film 46, the winding start side reader 49 is fixed to the winding core 51, and the protective sheet 53 is fixed to the winding start side reader 49. In this state, a high-quality shipping glass roll 55 in which the glass film 46 is wound around the core 51 together with the protective sheet 53 is obtained.

  FIG. 9 illustrates the implementation status of the method for manufacturing a glass roll according to another embodiment of the present invention, and illustrates the implementation status of the shipping winding process A4 in each process. About other process A1-A3, since the manufacturing method and implementation condition of the glass roll which concerns on above-mentioned embodiment are the same, the illustration and description are abbreviate | omitted.

  As shown in the figure, in the shipping winding process A4 according to the other embodiment, one surface 56x having the adhesive surface of the laminating film 56 is pasted on one surface 46x of the resized glass film 46. While being worn, the sheet is fed to the winding position 57, and at the winding position 57, the protective sheet 53 is wound while being interposed between the other surface 56y of the laminating film 56 and the other surface 46y of the glass film 46. Execute. In this case, the point where the winding start side leader 49 and the winding end side leader are connected to the glass film 46, and the point where the start end 49 a of the winding start side leader 49 is fixed to the outer peripheral surface 51 a of the core 51. Is the same as the matter described in the above-described embodiment, and therefore, the same reference numerals are used for common components, and illustration and description thereof are omitted. In this step A4, the protective sheet 53 is not fixed to the core 51, but is merely interposed between the glass film 46 and the laminating film 56. In this way, it is possible to obtain an advantage that winding displacement and tightening can be prevented while reducing the amount of the protective sheet 53 used. In this step A4, the start end portion 53a of the protective sheet 53 is fixed to the outer peripheral surface 51a of the core 51 together with the start end portion 49a of the winding start side reader 49, as in the above-described embodiment. Also good. In addition, the laminating film 56 may have not only one surface 56x but also the other surface 56y having an adhesive surface.

  Then, by executing the shipment winding process A4, the winding start side leader 49 and the winding end side leader are connected to the glass film 46, and the laminating film 56 is adhered to one surface 46x of the glass film 46. In addition, the winding start side leader 49 is fixed to the core 51, and the protective sheet 53 is not fixed to the core 51 but between the other surface 46 y of the glass film 46 and the laminating film 56. A high-quality shipping glass roll 58 in which the glass film 46 is wound around the core 51 together with the protective sheet 53 in a state of being interposed is obtained.

  In the above embodiment, in the leader coupling winding process A2, the resize winding process A3, and the shipping winding process A4, as shown in FIGS. However, the glass film 13 may be transported without going around the circuit by reducing the number of rollers 33.

  Further, in the above embodiment, in the shipping winding process A4, a sheet-like coupling body is not used for the coupling structure between the winding start side leader 49 (and the winding end side leader) and the resized glass film 46. You may make it use a sheet-like coupling body as needed.

13 glass film 15 protective sheet 16 core 17 mother glass roll 23 protective sheet 24 core 25 mother glass roll 26 with leader 26 start side leader 39 protective sheet 40 core 41 glass roll 46 with resized leader 46x resized glass film 46x One surface 46y of the glass film 47 The other surface 47 of the glass film 47 Winding side leader 49 Winding side reader 51 Core 53 Protective sheet 55 Shipping glass roll 56 Laminating film 56x Laminating film one side 58 Shipping glass Roll A1 Original winding process A2 Leader connection winding process A3 Resize winding process A4 Shipping winding process

Claims (9)

An original winding process for producing a mother glass roll by winding a glass film conveyed while being formed around the core together with a protective sheet;
The mother glass with a leader is obtained by unwinding the mother glass roll and winding the glass film again around the core together with a protective sheet and by connecting a leader to both longitudinal ends of the glass film. A leader connection winding process for producing a roll;
Unroll the mother glass roll with the leader, rewind the glass film around the core together with the protective sheet, cut the glass film along the longitudinal direction to a predetermined width, with a resized leader Resize winding process to produce a glass roll;
Unwinding the resized glass roll with a leader, winding the glass film again around a core with a protective sheet, and rewinding it for shipping to produce a resized glass roll with a leader for shipping and the step, possess,
In the take-up process for shipping, the leader is fixed to the core and the protective sheet is fixed to the core to perform winding.
The manufacturing method of the glass roll characterized by the above-mentioned. In the shipping winding process, the leader and the protective sheet are fixed at the same place.
The manufacturing method of the glass roll of Claim 1 characterized by the above-mentioned. 3. The glass roll according to claim 1, wherein in the original winding step, the glass film is not fixed to the core and the protective sheet is fixed to the core to perform winding. 4. Manufacturing method. The said leader connection winding process and the said resize winding process WHEREIN: The said leader is fixed to the said core, and the said protection sheet is fixed to the said leader, and winding is performed . The manufacturing method of the glass roll in any one . An original winding process for producing a mother glass roll by winding a glass film conveyed while being formed around the core together with a protective sheet;
The mother glass with a leader is obtained by unwinding the mother glass roll and winding the glass film again around the core together with a protective sheet and by connecting a leader to both longitudinal ends of the glass film. A leader connection winding process for producing a roll;
Unroll the mother glass roll with the leader, rewind the glass film around the core together with the protective sheet, cut the glass film along the longitudinal direction to a predetermined width, with a resized leader Resize winding process to produce a glass roll;
Unwinding the resized glass roll with a leader, winding the glass film again around a core with a protective sheet, and rewinding it for shipping to produce a resized glass roll with a leader for shipping And having a process
In the shipping winding process, a laminate sheet is attached to one surface of the glass film, the leader is fixed to the core, and the protective sheet is attached to the other surface of the glass film, the laminate sheet, features and to Ruga Rasuroru manufacturing method of a performing a winding and interposed between. The method for manufacturing a glass roll according to claim 5 , wherein in the shipping winding process, winding is performed without fixing the protective sheet to the core. The glass roll according to claim 5 or 6, wherein in the original winding step, the glass film is not fixed to the core and the protection sheet is fixed to the core to perform winding. Manufacturing method. In the said leader connection winding process and the said resize winding process, the said leader is fixed to the said core, and the said protection sheet is fixed to the said leader, and winding is performed. The manufacturing method of the glass roll in any one. A glass roll for shipment in which a glass film is wound around a core together with a protective sheet in a roll shape,
A leader is connected to the glass film, a laminating film is attached to one surface of the glass film, the leader is fixed to the core, and the protective sheet is fixed to the core. A glass roll characterized in that the glass roll is interposed between the other surface of the glass film and the laminating film.

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