TW201249760A - Cutting method of plate glass and cutting device thereof - Google Patents

Abstract

After an initial crack 6 is formed on a predetermined cut line 5 of a plate glass G supported by a supporting portion 2(8) from the backside of the plate glass G, the initial crack 6 passes through from the surface to the back and extends by a stress formed by locally heating along the predetermined cut line 5 and cooling the heating area, so that to cut the full-body of the plate glass G. The backside of the plate glass G is supported by the supporting portion 2(8) by inserting an elastic sheet E having low thermal conductivity between the plate glass G and the supporting portion 2(8) when cutting the plate glass G.

Description

201249760 VI. Description of the Invention: [Technical Field] The present invention relates to a method and apparatus for cutting a sheet glass by local heating and cooling along a cutting line of sheet glass. [First-hand technology] It is well known that the mainstream of image display devices in recent years is liquid crystal display (LCD), plasma display panel (PDP), field emission display (FED), and Electroluminescent display (〇rganic

A flat panel display (FPD) represented by Light-Emitting Diode ’ OLBD. Since these FPDs are being promoted to be lightweight, the current situation is that the glass substrates used in these FPDs are becoming increasingly thin. In addition, the organic EL does not illuminate the fine primary colors by a thin film transistor (TFT), but emits light in a single color (for example, white) and is also used as a backlight for an LCD or a light source for indoor illumination. Plane light source. Further, when the organic EL illumination device has flexibility in the glass substrate, the light-emitting surface can be freely deformed. Therefore, the glass substrate used in the illumination device is also being pushed forward from the viewpoint of ensuring sufficient flexibility. The thickness of the sheet (glass film). The method of cutting (or cutting) the glass, the substrate used in the FPD or the illumination device, etc., generally includes: t-turning, scribe a predetermined depth on the surface or the back surface of the glass substrate; and a breaking step, After the above steps are performed, the f-moment is applied across the scribe line, thereby cutting the glass substrate.

S 4 201249760 As a modified example of such a glass substrate cutting method, according to Patent Document 2, there is disclosed a method in which a laser light riding by a preceding movement and a cold cooling of a new one are used. The surface layer of the glass substrate is cracked by gj in thermal stress to form a scribe line, and then fractured (broken) by a mechanical method with a scribe line as a boundary. Further, as a characteristic configuration thereof, it has been revealed that an adhesive layer or a filling liquid having a high age is located directly under the glass plate-line formation line. Further, 'the patent document 3' discloses a whole body cutting method in which the thermal stress of a workpiece containing a brittle material (for example, a glass substrate) is separated into thermal stress distribution and the stress propagation speed is expanded upward. And the temperature distribution is formed by a combination of heating of the laser light and cooling by heat conduction. [PRIOR ART DOCUMENT] [Patent Document 1] Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. 2〇〇9_4〇665 Bulletin W t is, with the previous general method of smoke, the special method, the patent application of the Lang substrate _ method is basically on the glass substrate = surface layer engraving age, and _ The line is a boundary for the so-called breaking, and the surface of the fiber is slightly cracked to cause its surface properties; == and 'the cutting method requires the step of using the laser beam and the refrigerant wire in combination, and the "complex thief device for cutting the operation" It is complicated and causes fatal problems such as high cost of 20129760. Further, the cutting method has the following difficulty: if the strip-shaped plate glass that is continuously conveyed is continuously cut, it will be extremely difficult to work. On the other hand, according to the cutting method disclosed in Patent Document 3, the cutting operation can be completed by performing the whole body cutting (full cutting) of the glass substrate by the thermal crack to expand the initial crack, so that the formation of the scribe line is not required. In the operation, it is expected that the cutting operation can be made rapid, and the cut end surface can be made into a mirror surface or a surface property as a standard. Therefore, it is expected that the cut end surface can be made appropriate. However, in this publication, the shape of the glass substrate is used. The support is not disclosed and implied, and the specificity of the method for proper whole body thermal stress cutting is lacking. The shape of the glass slab is extremely important when the whole body thermal stress is cut more properly. The factor is that, in the past, as shown in Fig. 1, the upper surface of the fixed plate 2G is placed on the substrate g, and the thief is subjected to local heating and utilization of the region by the arrow z from above, thereby making the initial Crack expansion. In addition, the method that has been implemented for a long time since the previous time, the behavior published in the publication, etc. 疋 This simple method causes the following things to be caused: when the glass substrate g is locally heated, such as Figure i is bulging upward due to expansion, and on the other hand, when the subsequent cooling portion is recessed due to shrinkage, and, on, the glass-based phase glass substrate g is generated and The fixed disc 20 on the green (iv) cold recesses along gb, the plate 20 into

S 6 201249760 Obstruction causes the initial crack or directional disorder to expand and other events, so there is a problem that the glass substrate g cannot be cut accurately along the cut line. Further, since the glass substrate g is in surface contact or substantially in surface contact with the platen 2, heat is absorbed by the platen 2, and sufficient local heating cannot be performed. In this state, even if cooling is performed, the temperature gradient does not become constant. Sufficient, the thermal efficiency is deteriorated, and this causes a problem that further hinders accurate cutting along the cut line. Such a situation becomes more remarkable when the thickness of the glass substrate g becomes thin. Further, in the whole body thermal stress cutting, a large amount of heat is required. Therefore, the contact state between the supporting member such as the fixing plate and the glass substrate during local heating becomes extremely important. From this point of view, the actual situation is that no appropriate countermeasure has been taken. In this case, the technique disclosed in the above-mentioned Patent Document No. 2 and Patent Document 2 is not a technique for performing whole-body thermal stress cutting, and it is not necessary to take measures against the loss of heat during local heating, so the supporting form of the glass substrate is not required. If you look at the solution to this problem, it will be a big problem. That is, the cutting method disclosed in the publications is a method in which the adhesive layer 4 having high thermal conductivity is located directly under the scribe line forming line of the glass substrate as a form of the branch of the glass substrate, and thus, when irradiated When laser light for scribing the surface of the glass substrate is formed, a large amount of heat of the laser light is transmitted to the lower structure via the adhesive layer or the like (in the publication, other glass substrates and support members supporting the same) > Therefore, even if the area heated by the laser light is cooled, a sufficient temperature gradient cannot be obtained, and thus the problem of insufficient stress required for forming the crack propagation of the scribe line is caused. When the glass substrate is integrally cut by the support form of the glass substrate, a large amount of heat originating from the region heated by the laser light is not easily transmitted from the glass substrate to the underlying structure, and thus the following problem occurs: the thermal efficiency is lowered. The gradient becomes more insufficient, and it is difficult or impossible to perform whole body thermal stress cracking using crack propagation. In the case of the present invention, when the sheet glass such as a glass substrate is integrally cut by local heating and cooling along a line to be cut, the shape of the sheet glass of the sheet glass is appropriately adjusted, and the sheet glass is appropriately handled. The stress required for the cutting is insufficient or the deformation caused by the heating and cooling is a technical problem. The present invention created to solve the above technical problem is a sheet glass which is supported by the branch member from the back side. After the initial crack is formed on the cutting line, the initial crack is propagated from the surface to the back surface and expanded by the tensile stress generated by the local heating along the cutting line and the cooling of the heating region. A method of performing whole body cutting of the sheet glass, wherein the sheet glass is supported by the support member from the back side via an elastic sheet having low thermal conductivity. According to this configuration, along the cutting line Scanning the heating zone produced by local heating of the sheet glass and the cooling caused by the cooling corresponding to the heating zone In the region, the region in which the tensile stress (thermal stress) is generated also moves along the line to be cut, whereby the initial crack line is expanded to perform whole body cutting (full cut) on the sheet glass. The baffle member has a low thermal conductivity from the back side

S 8 201249760 The elastic sheet supports the sheet glass, so that a large amount of heat generated by local heating for the sheet glass is suppressed to the support member by the low thermal conductivity of the elastic sheet, that is, high heat insulation. . Therefore, it is possible to sufficiently maintain the temperature gradient due to local heating and cooling, improve the thermal efficiency, and perform a satisfactory and proper whole body cut of the sheet glass. In other words, if the whole body is to be cut by the heating and cooling of the plate glass, a large amount of material is required, so if most of the heat is absorbed by the supporting member, not only waste but also a full body cutting tape is provided. Come to the obstacles. Therefore, in the present invention, the low thermal conductivity of the elastic sheet is effectively utilized, and the temperature gradient accompanying local heating and cooling for the sheet glass is sufficiently made, so that the stretching required for the whole body cutting can be ensured as much as possible. Stress (thermal stress). In this way, the slab-shaped glass is cut in a state in which the thermal efficiency is improved. Therefore, it is extremely advantageous to advance the work with the synergy of the whole body cutting, and to improve the productivity. Further, even if the periphery of the line to be cut of the sheet glass is deformed due to a large thermal gradient, the elastic sheet existing on the back side is deformed in accordance with the deformation, so that the sheet glass is not supported. Bringing obstacles, it is possible to perform high-precision whole body cutting accurately along the cutting line. Further, since the presence of the elastic sheet prevents the back surface of the sheet glass from being damaged, there is no possibility that the strength of the sheet glass is lowered. Further, in the whole body cutting, the force of tearing the sheet glass must act on both sides with respect to the direction in which the crack (crack) advances, but in this case, if suction is applied to the branch member, When the plate glass is directly adsorbed and held, the tearing force acting on the plate glass is reduced. However, according to the 201249760 material of the sheet glass as in the present invention, the tearing force acting on the sheet glass can be appropriately supported by the effectively generated tearing force, preferably the above-mentioned impurities. (4) The heat transfer rate is less than the above-described whitening effect, and the effect of suppressing heat conduction from the above-mentioned sheet glass toward the support member is surely enjoyed. In the above, the above elastic sheet can be set as an organic sheet = thin, poly s, "amine propylene material, or each of these materials = 2, the polymer alloy of the pure material, or the shaft material is s... In addition, the form of the organic sheet is preferably a foamed tree or a non-woven fabric, and a pulp sheet or the like may be used as the organic sheet. If so, the material has both a good elasticity for deformation of the sheet glass when the sheet glass is completely cut by thermal stress, and a preferred low thermal conductivity for heat toward the member (four). Therefore, as a function between the glass and the branch (four), it is excellent in overall integrity. The upper composition t may be, for example, a τ method: the above-mentioned plate glass smashes the strip-shaped plate glass which is continuously conveyed, and the elastic sheet is the strip-shaped plate glass which is continuously conveyed The elastic sheet has a line to be cut extending in the conveying direction of the strip-shaped sheet glass, and the strip-shaped sheet glass is continuously cut along the line to be cut. 201249760 If so, it is possible to perform a whole-body cutting along the conveying direction of the continuously conveyed strip-shaped sheet glass, which is not possible before, and it is not necessary to have a length limited to one side of the rectangular glass substrate as before. The cutting is carried out, so that the cutting efficiency is greatly improved, and the treatment or the form of use of the cut sheet glass can be diversified. Further, when such continuous cutting is performed, it is preferable that the support member is driven to continuously convey the strip-shaped plate glass and the strip-shaped elastic sheet together. If this is the case, the strip-shaped sheet glass and the strip-shaped elastic sheet are conveyed together with the conveyance drive of the support member, so that the branch member and the belt-shaped elastic sheet and the strip-shaped sheet glass are less likely to be produced between each other. Sliding or the like does not have the possibility of causing scratches or the like on the sheet glass, and the conveyance of the sheet glass is stably performed. As a result, the quality of the glass can be improved, and the cutting operation can be speeded up and smoothed. Further, when such continuous cutting is performed, the predetermined line to be cut can be placed (presumably located) at a position in the width direction to continuously cut the position of the strip-shaped sheet glass. In this way, the strip-shaped sheet glass can be divided at any position in the width direction (the direction orthogonal to the transport direction), so that a strip-shaped sheet glass having a long dimension from the width direction can be obtained, and a plurality of strips can be obtained. A strip-shaped plate glass having a desired width direction dimension. Thereby, the molding ability of the strip-shaped sheet glass by the molding apparatus can be improved, and the sheet glass corresponding to the required width can be produced quickly and efficiently. Further, when such continuous cutting is performed, the line of the above-mentioned cutting plan 11 201249760 may be continuously cut away at the positions of the ear portions formed at both ends in the width direction of the strip-shaped sheet glass. In this manner, after the successful forming operation of the strip-shaped sheet glass by the molding apparatus is maintained, the ear portion which is an unnecessary thick portion of the sheet glass is continuously cut. The work is performed, so that the ear can be removed efficiently and satisfactorily. In addition, when the continuous cutting as described above is carried out, the strip-shaped sheet glass which is continuously conveyed can be set as a strip-shaped sheet glass which has been cooled by the slow cooling region of the molding apparatus. In this case, a series of continuous molding steps which are formed by the molten glass by the molding apparatus and then cooled by the slow cooling zone are accompanied by local heating and cooling during the continuous conveyance of the strip-shaped sheet glass. The plate glass is continuously cut whole body. Thereby, the forming step of the strip-shaped sheet glass by the molding device and the whole body cutting of the sheet glass are performed as a series of continuous operations, and the work efficiency is greatly improved. Further, as the forming device, a device capable of performing a down-draw method, in particular, an overflow down-draw method is preferable. However, it is not excluded that a molding apparatus that can perform a floating method or the like. Further, when continuous cutting as described above is performed, it is also possible to continuously perform the above-described continuous conveyance along the line to cut. The strip-shaped plate glass is subjected to whole body cutting, and is wound around the winding core in a roll shape. In this case, the strip-shaped plate glass after the ear is cut off or the width direction dimension is divided into a desired size as described above.

In S 12 201249760, the plate-like surface of each of the strips is wound around the roll s, so that the strip-shaped thin-walled glass can be easily and easily accommodated in the strip shape. Each of the strip-shaped plate-shaped glass which has been divided is preferably such that the conveying directions of the respective plate-shaped glass are different, and the respective sheets are wound around the respective winding cores in a roll shape. In the above configuration, the elastic sheet may be cut while being cut by the whole body of the sheet glass. If so, the sheet glass can be paired with the elastic sheet by the same portion in the width direction. Specifically, such an action is performed by, for example, local heating and _cold cooling of the laser irradiation, when the plate glass is cut by the body, and the laser beam passes through the gap of the plate glass through the laser beam. To cut (melt) the elastic sheet. In this case, it is preferable that the strip-shaped sheet glass which is continuously conveyed is continuously cut along the line to be cut, and is wound in a roll shape on the winding core (four). In the state where the strip-shaped plate glass is completely covered and the paste is superimposed on the strip-shaped plate glass, it is formed into a roll shape == around the winding core. In this case, the strip-shaped sheet glass is protected by a strip-shaped elastic sheet (for example, an organic sheet), and (4) damage or the like caused by contact between the plate-like surfaces can be prevented. Further, in the reverse glass-wound body obtained by winding as described above, the 'belt (four) elastic sheet can also be used as a buffer (four) for the strip-shaped plate glass, and it is possible to achieve a rational or shock mitigation. Sexual excellence. < TJ 地13 201249760 In the above configuration, a pressing member may be disposed on a surface side of the sheet glass, and the pressing member and the supporting member may be disposed to face each other, and between the pressing member and the supporting member The above plate glass is clamped. If this is the case, the plate glass is placed in a flat position, and in the case where the plate glass is in the vertical posture, the plate glass can be held and held by the branch member and the pressing member. The whole body cutting with local heating and cooling is performed, and appropriate cutting can be performed regardless of the posture of the plate glass. Further, in this case, the pressing member may be provided as the same member and the same structure as the member of the member, and it is preferable that the elastic sheet having low thermal conductivity is located at the pressing member and Between the plate glass. In the above configuration, the thickness of the sheet glass is preferably 2 〇〇 μηι or less. In other words, if the thickness is 200 μm or less, the thin-walled plate glass (glass j-film) is used to scribe the scribe line by rotating the wheel cutter by a weak pressing force, so that the plate is not made. It is difficult to engrave the glass pulverization method. When the pressing force of the above-described wheel cutter is too strong, not only the vertical cracks required for the breakage are likely to occur, but also the horizontal direction which causes the strength of the cut end face to be lowered is likely to occur. Micro cracks. Further, when a glass film having a thickness of 200 sec or less is wound into a roll shape and stretched in the longitudinal direction, and the cutting line is broken, it is necessary to form a scribe line over a long distance without paying for complicated work. Or difficult. Thus, the problem that the scribe line is to be broken on the glass film having the thickness of the thickness can be solved by the method of the present invention described above, and as a result, as the thin-walled 201249760, the glass can be obtained. High-quality plate glass with high bending strength. In addition, when a glass film having a thickness of 200 μm or less is used as the object, the elastic material is present on the three sides of the glass film, so that the glass film is not supported by the support member of the support member or the friction shirt. Constrained, the glass film can be maximally expanded by local heating and contracted to the maximum by subsequent cooling. Further, the expansion does not cause a difference in the initial crack to carry out the tensile stress of the whole body, so that the glass film can be cut by the maximum tensile stress which is extremely difficult to heat and cool. In the above configuration, it is preferred that the local heating is performed by a carbon dioxide laser. In this way, if a carbon dioxide laser is used as the local heating mechanism for the cutting line of the sheet glass, the glass (_ is a neon glass) can efficiently absorb the energy of the laser, so that local heating can be easily performed in a stable state. And the cost has also become cheap. When the above method is used, a plate glass having at least one side cut and having a thickness of 200 μm or less can be obtained. Further, since the plate-shaped glass (glass film) has a high bending strength of the cut surface, it can withstand a strong tensile stress caused by bending or the like with a small radius of curvature, and can be wider than before. It is used internally and is excellent in handling property. Further, when the above method is used, it is possible to obtain a sheet glass having a bending strength of at least one side and having a bending strength of 200 MPa or more and a thickness of μηη or less. 15 201249760 ί The plate glass (glass film) has a tensile strength of 200 MPa or more due to the cutting surface, so it can withstand stronger tensile stress caused by bending with a smaller radius of curvature, and is resistant. The bending strength is made clear by a higher value of 2 〇〇 MPa or more. Thereby, the treatment of the sheet glass can be embodied in an appropriate form. Further, according to the above method, a plate-shaped glass wound body obtained by winding around the core of the core in a roll shape can be obtained. According to the plate-shaped glass wound body, the storage or handling is facilitated, and the conveying efficiency is also improved. In addition, a method of extracting a strip-shaped sheet glass from one sheet-like glass winding body and winding it around the other cores in a roll shape (continuous winding) is performed along the longitudinal direction The process of performing the whole body cutting of the extended cutting line can be performed satisfactorily and easily. Further, an organic layer may be formed on at least one of the cut surface and the front and back surfaces of the sheet glass obtained by the above method. That is, when an organic layer is formed on the cut surface or the surface or the back surface of the obtained sheet glass, the strength of the cut surface or the front and back surfaces is improved, and thus, for example, in a sheet glass (glass film) having a thickness of 200 μm or less The deflection ensures sufficient strength and can effectively utilize the flexibility of the thin-walled glass. Here, the "organic layer" also includes an organic resin film or the like which is bonded via an adhesive layer or an adhesive layer. The apparatus of the present invention created to solve the above-described technical problems is a cutting device for a sheet glass, which is constructed in such a manner that an initial turtle is formed on a cutting line of a sheet glass supported by a side member from the back side. After the cracking, the initial crack is penetrated from the surface to the back surface and expanded by the local heating according to the above-mentioned predetermined line and the cooling of the heating region of 201249760 ^10, thereby performing the sheet glass It is characterized in that it is configured to support the sheet glass by an elastic sheet having a low thermal conductivity from the f-side of the support member, and includes an explanation of the operation and effect of the device having the configuration. The substance and the constituent elements are substantially the same as those described in the above-described method of the present invention. .

[Effects of the Invention] As described above, according to the present invention, since the sheet-like glass is supported by the elastic sheet having low thermal conductivity through the support member from the back side, the low heat conduction by the elastic sheet is provided. Sex, that is, south heat insulation to suppress a large amount of heat generated by local heating of the glass to the support member, thereby sufficiently ensuring a temperature gradient due to local heating and cooling, improving thermal efficiency, and performing sheet glass A perfect and proper whole body cut. Further, even if a large thermal gradient is generated, the periphery of the line to be cut of the sheet glass is deformed, and the elastic material present on the back side thereof is increased in accordance with the deformation, so that the sheet glass is not given. The support brings obstacles, and high-precision whole body cutting along the cutting line can be performed. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Furthermore, in the following embodiments, a PPD, an organic EL illumination device, or a plate glass having a thickness of 200 μm or less, which is used in a solar cell, is a glass film. Fig. 1 is a schematic perspective view showing an implementation state of a cutting device of a 201249760 sheet glass forming an i-th embodiment of the basic structure of the present invention and a cutting method therefor. As shown in the figure, the cutting device! The invention comprises: a supporting member 2, comprising a fixing plate or a flat plate formed of a material with a relatively rigid metal material; the elastic sheet E is laid on the supporting floor surface of the supporting member 2 and has low thermal conductivity (or heat insulation) The local heating mechanism 3 illuminates the laser beam L from the sheet glass G cut on the material E from the surface side to perform the partial heating of the local heating mechanism 3 (the accumulation of u, poly S1, polyamine or a copolymer of each of these materials, a polymer of these materials, or a polymer alloy of these materials with other synthetic polymers. Bubble resin or non-woven: In addition, 'the formation of the shape, using the oxidation machine 3 structure, but he can enter two = as a refrigerant sprayer' but the refrigerant can also be heart, material (four) and New Zealand = in the glass The fluid composition of the fluid is 2 and the sturdy sheet E and the plate: 2i about the profit. And '201249760 and from the one end side of the sheet glass G from the cutting schedule,: harmful = in this case 'in the plate shape The 疋f 5 at the end of the glass G is formed by a crack forming mechanism (cracking mechanism) outside the drawing Since the crack 6a is formed, the initial turtle is expanded by the stress (thermal stress) generated during the scanning of the heating region h and the cooling region c, thereby extending from the surface to the back surface on the planned cutting line 5. The face-to-face extension-face is formed. At the same time, the elastic sheet E is cut (melted) along the line 5 to be cut by the laser irradiation of the local heating mechanism 3, in which case the sheet glass G The initial crack 6a is expanded, and the force of the sheet glass G is torn relative to the direction in which the crack (crack) advances during the formation of the cut surface 6 penetrating from the surface to the back surface on the one side of the cut line 5 . The two sides (vertical direction) are formed on the both sides (the initial crack 6a side) on the planned cutting line 5 of the sheet glass G, as is shown in the figure. When the sheet glass g is directly adsorbed and held by the negative pressure suction or the like on the support member 2, the tearing force acting on the sheet glass G is reduced, and it is difficult to form the gap 如上 as described above, but the back side of the sheet glass G is formed. If there is an elastic sheet, it will be used. The main cause of the reduction in the tearing force of the sheet glass G disappears, and the gap 如上 as described above can be easily formed. Therefore, the initial crack of the sheet glass G is expanded, for example, even if the expansion of the cutting surface 6 is performed rapidly and satisfactorily. Further, the elastic sheet E is also torn in the same form along with the sheet glass G. In the above-described form, the whole body is cut with the plate-shaped glass G along the line to cut 5 (systemic heat) Stress cut) to divide it while '19 201249760 2 cutting _ alignment 5 to sheet E _ again, in this embodiment, the support member 3 ^ cooling mechanism 4 is fixed, but also The structure is ^" = solid hold and the local heating mechanism 3 and the cooling mechanism 4 are moved. - In the cutting process as described above, the support member 2 supports the plate from the back via the elastic sheet E having a low guide Since the shape of the cutting glass 5 of the sheet glass G is locally heated, a large amount of the setting is due to the elasticity of the lower heat conductivity, that is, the high heat insulating property is transmitted to the support member. 2. In particular, in this embodiment, the elastic sheet ε heat rate is lower than that of the branch member 2, and therefore heat absorption from the sheet-like ridge G toward the support member 2 is preferably suppressed. Therefore, the temperature gradient due to local addition and subtraction of cooling can be sufficiently ensured, the contact rate can be improved, and the plate glass G can be completely and completely cut by the whole body. Incidentally, since the low thermal conductivity of the elastic sheet E is effectively utilized and the temperature gradient accompanying local heating and cooling of the sheet glass G is sufficient, the entire body of the sheet glass G can be suppressed as much as possible. Deficiencies in the stress (thermal stress) required for cutting. In this way, the slab-shaped glass stalk G is cut in a state in which the thermal efficiency is improved. Therefore, the rapid progress of the work is promoted by the synergy with the whole body dicing, which is extremely advantageous in terms of improving productivity. Further, when deformation occurs in the vicinity of the line to cut 5 of the sheet glass G due to generation of a large thermal gradient, especially when the deformation of the depression occurs, the elastic sheet E existing on the back side thereof follows the deformation. Since it is deformed, it does not cause an obstacle to the support of the sheet glass G, and it is possible to perform high-precision whole body cutting accurately along the line 5 to be cut. Further, by elastic sheet

The presence of S 20 201249760 E prevents the back surface of the sheet glass G from being damaged or the like, so that the strength of the sheet glass G can be effectively prevented from being lowered. In addition, when the thin-walled sheet glass G having a thickness of 200 μm or less is considered, the back side of the vicinity of the line to cut 5 of the sheet glass G is not caused by the support surface 2a of the support member 2. Confined by adsorption or friction, the sheet glass G can be maximally expanded by local heating and contracted to the maximum by subsequent cooling. Further, the difference between the expansion and the contraction is a factor of the tensile stress for expanding the initial crack 6a to perform the whole body cutting, so that the maximum pulling force which can be produced by the extremely south-effect heating and cooling can be effectively utilized. The stress is applied to judge the sheet glass G. Further, according to the figure, the initial crack 6a is formed at one end portion of the surface of the sheet glass G on the cut line 5, but the initial crack 6a may also span from one end of the surface of the sheet glass G. Formed by the end faces. Further, in this embodiment, the elastic sheet E and the sheet glass G are cut together, but only the sheet glass G may be subjected to whole body cutting without cutting the elastic sheet E. Fig. 2 is a perspective view of an essential part showing an implementation state of a cutting device for a sheet glass according to a second embodiment of the present invention and a cutting method therefor. As shown in the figure, the cutting device wipe of the second embodiment is constituted by a conveyance belt (a plurality of conveyance rollers of the roller conveyor) 8 to constitute a support member, and the conveyance belt 8 is provided. It is driven in the direction of the arrow a, wherein the arrow is also oriented to convey the belt 8 through the strip-shaped elastic sheet E in the direction of the cut line 5, so that the belt 8 21 201249760

The outer peripheral surface is set to support the branch floor surface 8a of the strip-shaped sheet glass G via the strip-shaped elastic sheet E. Further, the cutting pre-amplifier line 5 of the sheet glass G which is difficult to be placed is provided with a local heating mechanism 3 for performing local heating by the laser beam l and a cooling mechanism 4 for supplying the cooling water w. According to this configuration, the belt-shaped sheet glass G' superimposed on the belt-shaped elastic sheet E is conveyed by the conveyance belt 8 of the conveyor 7, and the heating region η of the local heating mechanism 3 precedes the cooling region of the cooling mechanism 4. 〇 Scanning is performed on the cutting line 5 ± from the end side of the strip-shaped sheet glass G. Thereby, the initial crack formed at the end portion of the strip-shaped sheet glass G is expanded, and the cut surface 6 penetrating from the surface to the back surface is formed on the cut line 5, and the whole body is continuously cut ( Whole body thermal stress cut). At the same time, at the same time, the strip-shaped elastic material > E is cut (hyun), and the strip-shaped sheet glass G and the strip-shaped elastic sheet E are in a paired state. The matter of the configuration and the effect of the squirrel or the suffix is the same as that of the above-described ninth embodiment. Therefore, the same components are denoted by the same reference numerals, and the description thereof will be omitted. Fig. 3 is a perspective view showing a cutting device for a sheet glass according to a third embodiment of the present invention and a method for performing the cutting method. As shown in the figure, the cut-off of the third embodiment is to cut off the misalignment at both ends in the width direction of the strip-shaped sheet glass G, and the center portion of the ear portion Gx in the width direction is 丄 = cut Pre-twist line 5. Further, in a region from the respective portions of the predetermined line 5 to the predetermined side of the predetermined line 5, a portion of the strip-shaped material E (four) glass G is transported from the back side branch.

S 22 201249760 to conveyor 7. Further, on the surface side of the strip-shaped sheet glass G, a local heating mechanism 3 for locally heating and a cooling mechanism 4 for spraying the cooling water W are disposed on the predetermined line 5 to be cut. In addition, one or more of the back side of the central portion of the strip-shaped glass G and the strip-shaped elastic sheet E in the width direction are provided to prevent one or more of G and E from sagging (Fig. Do the team slope feeding and also one of them.) Auxiliary conveyor 9 u........... When the width direction is short, not only the auxiliary conveyor y is required, but also a single The conveyor 7 conveys the structure of the strip-shaped elastic sheet E and the strip-shaped sheet glass G. In addition, the pair of single conveyors 7 can extend in the width direction so as to support the ear portion Gx of the strip-shaped sheet glass G from the back side, and the elastic sheet E can be extended to the same. In the case of the back side of the ear portion Gx, even in this case, the strip-shaped elastic sheet E is deformed in accordance with the opposite thick portion of the ear portion Gx. Therefore, the strip-shaped plate glass (10) is correct. The flat posture is conveyed, while the song is equal. According to the configuration described above, the heating region η of the plate-shaped glass-thermal mechanism 3 that transports green by the conveyor 7 (for the auxiliary transport domain 9) and the cooling mechanism are exhibited in the effective portion Ga and the ear ^ ^H Initial cracking

The whole body is cut, and the strip-shaped sheet glass G ° is used to continuously cut the ear mail ρ _. The strip-shaped elastic sheet E. ^Gx. Further, the effective portion Ea of the continuous earphones, and the effect or the addition of the same effect are the same. Therefore, in Fig. 3, the same constituent elements == shape number 23 201249760, and the description thereof will be omitted. Fig. 4 is a schematic side view showing a state of implementation of a dicing apparatus for a sheet glass according to a fourth embodiment of the present invention and a cutting method therefor. As shown in the figure, in the fourth embodiment, the molding apparatus 10 for molding the strip-shaped sheet glass G and the strip-shaped sheet glass G after the molding are wound around the winding core 11a in a roll shape. An embodiment of the cutting device 1 shown in Fig. 3 described above is provided between the surrounding winding devices 11. In other words, the molding apparatus 10 is a molding apparatus that performs an overflow down-draw method, and includes a molding region 10A having a molded body 10x, a slow cooling region 10B having an annealing mechanism (annealing device), and a step in the forming furnace from the top. The cooling zone of the cooling mechanism is 1〇c. Further, the strip-shaped sheet glass G extracted from the cooling region 10C of the molding apparatus 10 is smoothly bent by the transfer roller 12 and then conveyed in the lateral direction. Then, the self-sheet winding body is passed. The strip-shaped elastic sheet E that has been taken out is conveyed while being supported by the conveyance belt 8 of the conveyor 7 of the cutting device. When the belt 8 is supported by the belt-shaped elastic sheet E and the belt-shaped sheet glass G is conveyed in the lateral direction, the local heating mechanism 3 and the cooling mechanism 4 are applied to the line 5 to be cut. Local heating and cooling thereby integrally cut the strip-shaped sheet glass G between the effective portion Ga and the ear portion Gx, and also cut the strip-shaped elastic sheet E into the effective portion Ea and the unnecessary portion. After that, the effective portion Ea of the strip-shaped elastic sheet E is superimposed on the back side of the effective portion Ga of the strip-shaped sheet glass G, and is wound in a roll shape on the winding device 11 in a state of being rolled. The circumference of the core 11a. Then, the sheet glass G is cut in the width direction at a point where the outer diameter of the roll reaches a predetermined value. This cutting is performed by the example 24 201249760, which is obtained by cutting a scribe line in the width direction of the sheet glass G by a cutter, and then breaking (breaking). Further, the strip-shaped elastic sheet E is cut at the same position in the width direction by other cutting means. As a result, a strip-shaped sheet-like glass wound body which is a final product which functions as a cushioning material for the strip-shaped sheet glass G can be obtained. On the other hand, the ear portion Gx of the strip-shaped sheet glass G and the unnecessary portion Ex of the elastic sheet E are conveyed to the lower side for disposal. In addition, the configuration of the cutting device j and the operation and effect thereof are substantially the same as those in the above-described third embodiment. Therefore, in FIG. 4, the same components are denoted by the same reference numerals, and the description thereof will be omitted. Fig. 5 is a schematic side view showing an implementation state of a sheet glass cutting device and a cutting method therefor according to a fifth embodiment of the present invention. The fifth embodiment differs from the above-described fourth embodiment in that a strip-shaped sheet glass G that has been taken out from the cooling region 10C of the self-forming apparatus 10 is wound without cutting the ear portion Gx. After the original glass winding body 15 which is formed into a roll shape, the strip-shaped sheet glass G drawn from the original glass winding body 15 is conveyed in the lateral direction, and passes through the cutting step of the ear portion Gx by the cutting device. The sheet glass G is wound around the core 11a of the winding device u in a roll shape, whereby a sheet-shaped glass wound body as a final product is obtained. In this case, the strip-shaped elastic sheet E taken out from the sheet winding body 13 is also interposed between the conveying belt 8 of the conveyor 7 and the belt-shaped plate-like surface G in the cutting jaw, and In the sheet-like glass winding body which is used as a riding end product, the belt-shaped elastic sheet Ea also functions as a belt-shaped sheet glass crucible (10). Further, the configuration of the cutting device 1 for performing the cutting process of the band-shaped sheet glass G 25 201249760 ear Gx is substantially the same as that of the cutting device 1 of the third embodiment described above, and therefore The same components are denoted by the same reference numerals and their description will be omitted. Fig. 6 is a schematic side view showing an embodiment of a cutting device for a sheet glass according to a sixth embodiment of the present invention and a cutting method therefor. The sixth embodiment is different from the fourth embodiment or the fifth embodiment in that the strip-shaped sheet glass Gj which is conveyed from the cooling region 10C of the apparatus 10 or the original glass winding body 15 (four) is conveyed in the lateral direction. After the ear portion Gx of the sheet glass G is cut out, the sheet glass G is wound around the two cores 11a of the winding device u in a two-step process by the cutting device ,. This obtained two sheet-like glass winding bodies as final products. In this case, in the cutting device 1, the strip-shaped (four) sheet E taken out from the sheet winding body 13 is also interposed between the conveying belt 8 of the conveyor 7 and the plate-like shape G of the shape, and The strip-shaped elastic sheet #Ea in the sheet-like glass entangled body as the final product also functions as a cushioning material for the strip-shaped sheet glass a. Further, the _device i _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

搬 搬 搬 、 、 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '

S 26 201249760 The plate-shaped glass-shaped glass G is supported in a state in which the plate-shaped glass-ceramic is supported in a state in which the longitudinal direction is downward, and the conveyor belt 8z, which is a pressing member, is in contact with the strip-shaped sheet. In the 8Z, G between the two. The effect of the above-mentioned second embodiment is the same as that of the second embodiment to the sixth embodiment. Therefore, in FIG. 7, the symbols of the same constituent money are attached, and the description is omitted. In addition, the posture of the strip-shaped sheet glass G is not particularly limited, and is a flat posture (horizontal posture), and even if the center and the line in the longitudinal direction of the sheet glass G are inclined with respect to the horizontal direction, This composition. Further, in this case, in the sheet-like glass winding body as the final product, the belt-shaped sheet h also serves as a cushioning material for the strip-shaped sheet glass Ga. FIG. 8 is the cutting by the above embodiment. A diagram of an organic layer (preferably an organic resin layer) 16 is formed on the butterfly surface 6 of the sheet glass G (Ga) cut by the apparatus. In addition, in Guanzhong, since the plate-shaped glass G (Ga) has (four) faces 6 at both ends in the width direction, the organic layer 16' is formed at both ends, but when only one end of the sheet glass G (Ga) has a cut surface in the width direction At 6 o', the organic layer 16 may be formed only at the end. As described above, since the strength of the cut surface 6 of the sheet glass G is improved, the sheet glass G having a thickness of 2〇〇27 201249760 μm or less can ensure sufficient strength for deflection and can effectively The flexibility of the thin-walled sheet glass G is utilized. Fig. 9 is a view showing an organic layer (preferably an organic resin layer) 16 formed on the surface of the sheet glass G (Ga) cut by the cutting device 1 of the above embodiment. In this case, the strength of the surface of the sheet glass G (Ga) is also improved, whereby sufficient strength can be ensured for the deflection, and the thin-walled sheet glass G (Ga) can be effectively utilized. Flexible. [Examples] In [Example 1] of the present invention, the thermal expansion coefficient of the long side is 460 mm, the short side is 360 mm, the thickness is 2 〇〇μιη, and the thermal expansion coefficient at 30 ° C to 380 ° C is 38 x 10 7 / ° C. The alkali-free glass plate is placed on the support surface of the named member including the fixing plate or the flat plate via a foamed polyethylene sheet (thermal conductivity: 0.03 W/m, K~0.05 W/mK) (basically In addition, after the initial crack is formed, for example, the super-hard alloy cutter wheel is equal to the cut line of the non-glass plate, and the carbon dioxide laser is used as the local heating mechanism, the output power of the e 6〇w is An ellipsoid with a width of 3 mm is opened, and the laser spot is irradiated on the cutting pre-wire. Then, the surface is blown with a water volume of G1 Congling pressure and 1.0 ml/min. On one side, the whole body is cut at a speed of 2 〇〇mm/sec. By this = width, the above-mentioned partial twisting is repeated every 2 〇 mm in the direction = ' * made of 5 〇 roots with a width of 2 〇 coffee, length For the sample Sa composed of (10)^= glass, when the whole material is cut, it is also seven; the inspection::) foaming polymerization Alkenyl sheet. No glass powder production or glass back-transparent was found in the dark room with 200 lux of X-~5G root sample Sa'.

S 28 201249760 Damage. Then, as shown in FIG. 10, the two-point bending which is bent in a U shape is pressed by being sandwiched by the two plate-like bodies 17 and bent at a speed of 50 mm/min. The samples Sa were subjected to strength evaluation. This evaluation was carried out by calculating the breaking strength from the interval between the two plate-like bodies 17 when the bending was caused by the bending of the bending, and the minimum value of the breaking strength was 2 〇〇 MPa, and the average value was 5 〇〇. The result of MPa. When the breaking strength is compared with the breaking strength of the end surface obtained by forming the scribing after the scribing of the super-steel alloy blade wheel as in Comparative Example 1 described later, the average value is three times or more. result. In [Example 2] of the present invention, the length was 25 〇m and the width was 6 〇〇 mm. A strip-shaped plate glass composed of an alkali-free glass having a thermal expansion coefficient of 38×10 /C at a degree of 1 〇〇 μιη and a machine of 38 10 c> c is passed through Polyethylene Terephthalate (PET). The film (thermal conductivity: 〇.〇8W/mK~〇.l7W/mK) is attached to the rubber conveyor belt of the conveyor' and the conveying speed of the strip-shaped sheet glass reaches 200 ηπη/sec. The way drives the conveyor. Further, the carbon dioxide is divided into two sides in the width direction of the (four)-shaped plate glass, and correspondingly, the initial crack is formed by, for example, a super-hard alloy blade to be equal to the two cutting lines (substantially The state shown in 3). Then, using two carbon dioxide lasers, an elliptical t-point having a length of 3 () and a length of 1.5 mm is irradiated with an output power of 7 〇w to inscribe the initial m-plane with an initial crack to make Water quantity〗 Qmi/min ^ Under the pressure of 0.1 MPa, blow the _ _ (4) water refrigerant, one side = continue to cut the whole body 'by taking the width of the 50 sides of the width direction 29 201249760 respectively. At the time of the whole body cutting, the PET film is also cut (melted) at the same time. Thereafter, the strip-shaped sheet glass to be simultaneously cut and the strip-shaped PET film were superposed and wound on a roll of acrylic having a diameter of 100 mm, whereby a sheet-like glass wound body was obtained. The strip-shaped sheet glass obtained here was examined in an illuminance of 2 10,000 lux in a dark room, and no generation of glass frit and damage of the back surface of the glass were observed. Further, from the sheet-shaped glass wound body obtained here, 50 samples of strip-shaped plate glass having a width of 2 mm were selected, and evaluated by two-point bending in the same manner as in the above-described Example 1, and the breaking strength was obtained. The lowest value is 230 MPa, and the average value is 51 MPa. When compared with Comparative Example 1 described later, the average value is 3 times or more. 0 In [Comparative Example 1], the long side is 46 〇 mm, and the short side is An alkali-free glass plate having a thermal expansion coefficient of 38 x 10 〇 7 / t > c at 360 mm, a thickness of 50 μm and a pressure of 30 〇 C to 380 ° C was placed on the platen, and a blade tip angle of 95 was used. The cutter wheel of the super-steel alloy was placed on the glass plate at a width of 15 mm at a pressing force of 2 N and a speed of 匪/sec, and then broken by a manual operation. Among the 5 () root samples obtained in the above manner, 10 of the 10 horizontal cracks on the engraved line were expanded toward the square to be substantially impossible for sample selection. The evaluation of 40 of the remaining = was carried out by the same method as the above example i. As a result, the lowest value of the break (four) degrees of these (eight) MPa' average value is 13 〇 MPa, showing an extremely low value. [Brief Description of the Drawings] Fig. 1 is a schematic perspective view showing a state of implementation of a cutting device for a sheet glass according to a first embodiment of the present invention and a cutting method therefor. 201249760 Fig. 2 is a perspective view of an essential part showing a state of implementation of a dicing apparatus for a sheet glass and a cutting method therefor according to a second embodiment of the present invention. Fig. 3 is a perspective view of an essential part showing a state of implementation of a dicing apparatus for a sheet glass and a cutting method therefor according to a third embodiment of the present invention. Fig. 4 is a schematic side view showing a state of implementation of a dicing apparatus for a sheet glass according to a fourth embodiment of the present invention and a cutting method therefor. Fig. 5 is a schematic side view showing a state of implementation of a dicing apparatus for a sheet glass according to a fifth embodiment of the present invention and a cutting method therefor. Fig. 6 is a schematic side view showing an embodiment of a cutting device for a sheet glass according to a sixth embodiment of the present invention and a cutting method therefor. Fig. 7 is a schematic side view showing an embodiment of a cutting device for a sheet glass according to a seventh embodiment of the present invention and a cutting method therefor. FIG. 8 is a cross-sectional view showing a state in which an organic layer is formed on a cut surface of a sheet glass cut by a cutting device according to the first embodiment to the seventh embodiment of the present invention. FIG. 9 is a cross-sectional view showing a state in which an organic layer is formed on the surface of the sheet glass cut by the cutting device in the first embodiment to the seventh embodiment of the present invention. FIG. 10 is a schematic view showing a state in which evaluation of the sheet glass is performed. 11 & is a schematic front view showing a previous problem point. Figure 11bS shows a schematic front view of a previous problem point. Figure 11c is a schematic front view showing the previous problem. [Description of main component symbols] 1: Cutting device 31 201249760 2: Support member 2a: Support surface 3: Local heating mechanism 4: Cooling mechanism 5: Cutting line 6: Cutting surface 6a: Initial cracking · 7, 7z: Conveyor 8: conveyor belt (support member) 8a: support floor 8z: conveyor belt 9: auxiliary conveyor 10: forming device 10A: forming region 10B: slow cooling region 10C: cooling region 10x: molded body 11: winding device 11a: Core 12: Transfer Roller 13: Sheet Winding Body 15: Original Glass Winding Body 16: Organic Layer 17: Plate Body

S 32 201249760 20 : Fixing plate a : Arrow / direction b : Direction C : Cooling area E : Elastic sheet

Ea : effective part / elastic sheet

Ex : Unwanted part g : Glass substrate ga : Heating part gb : Cooling part / recessed part G: Plate glass (glass film)

Ga : effective part / sheet glass

Gx : Ear Η . Heated area Κ : Clearance L : Laser beam S a . Sample W : Cooling water z : Arrow 33

Claims (1)

201249760 VII. Patent application scope: 1. A method for cutting a sheet glass, which is formed by cutting a predetermined line on a sheet glass of a building on the side of the support member by the above (10) _ row local heating and stress generated by cooling of the rail area thereof, so that the initial crack penetrates from the surface to the surface and expands, thereby performing whole body cutting on the plate shape, which is characterized by the above-mentioned support member The back side is supported by the above-described sheet glass via an elastic sheet having low thermal conductivity. 2. The method of cutting a plate shape according to the item of claim 1, wherein the elastic sheet has a lower thermal conductivity than the support member. The method of cutting a sheet glass according to the above or the second aspect of the invention, wherein the elastic sheet is an organic sheet. 4. The method of applying the sheet glass according to any one of the items (i) to (3), wherein the sheet-shaped sheet is continuously conveyed by a strip-shaped plate shape and the above-mentioned miscellaneous It is a strip-shaped elastic sheet which is continuously conveyed together with the upper (four)-shaped sheet glass, and the cutting line is extended along the conveying direction of the strip-shaped sheet glass, and is continuous along the cutting pre-S line. This strip of glass lacks a whole body cut. 5. The method of cutting a sheet glass according to claim 4, wherein the continuation member is driven in such a manner as to continuously convey the strip-shaped sheet glass and the strip-shaped elastic sheet. 6. The method of cutting a sheet glass according to the invention of claim 4, wherein the predetermined line to be cut is located at a position where the strip-shaped sheet glass is continuously cut at a central portion in the width direction. S 34 201249760 7. The cutting method of the sheet glass according to any one of claims 4 to 6, wherein the towel cutting line is continuously cut open/formed in the above-mentioned ▼ shape. The position of the ears at both ends in the width direction of the sheet glass. 8. The method according to any one of claims 4 to 7 wherein the above-mentioned continuously conveyed strip-shaped sheet glass is cooled by a slow cooling zone of the forming apparatus. A strip-shaped plate glass that is conveyed later. 9. The cut-off method of the sheet glass according to any one of claims 4 to 8, wherein the +-face is continuously continuous to the strip which is continuously conveyed along the cut-and-line The sheet glass is subjected to whole body cutting, and is wound around the core in a roll shape. The cut-off method of the sheet glass according to any one of the items of the present invention, wherein the elastic sheet is cut while being cut by the whole body of the sheet glass. The method for cutting a sheet glass according to claim 10, wherein the continuously conveyed belt (four) plate-like shape is continuously performed on one side along the line of the cutting line. When it is wound in a roll shape as shown in (4), the belt-shaped elastic sheet which is cut to be cut is superposed on the strip-shaped plate glass while the belt (4) is cut by the whole body of the sheet glass. It is wound around the winding core in a roll shape. The method of cutting a sheet glass according to any one of the preceding claims, wherein a pressing member is disposed on a surface side of the sheet glass, respectively, and the pressing member and the supporting member are respectively The opposing plate is provided with 35 201249760. The plate glass is sandwiched between the pressing member and the support member. The method for cutting a sheet glass according to any one of claims 1 to 12 wherein the thickness of the sheet glass is 2 μm or less. The method of cutting a sheet glass according to any one of the preceding claims, wherein the partial heating is performed by a carbon dioxide laser. A sheet-like glass characterized in that it is cut at least one side and has a thickness of 200 μm or less by the method according to any one of claims 1 to 14. 16. A sheet-like glass characterized in that at least one side is cut by the method according to any one of claims 1 to 14, and the bending strength of the cut surface is 200 MPa or more. And the thickness is below ° 〇〇μιη. A sheet-like glass wound body characterized in that it is cut by a method as described in claim 9 or 11 and wound around a winding core in a roll shape. A sheet-like glass characterized in that an organic layer is formed on at least one of a cut surface and a front and back surfaces cut by the method according to any one of claims 1 to 14. A cutting device for a sheet glass, which is formed by forming an initial crack on a line to be cut of a sheet glass supported by a support member from a back side, by being cut along the line The line carries out the 36 201249760 board. The P-heating and the stress generated by the cooling of the heating zone cause the above-mentioned two-amps to pass through the surface to the back and expand, thereby cutting the plate-shaped glass into a whole body, which is characterized by: The plate-shaped glass is cut from the back side via a flat sheet having low thermal conductivity. 37