WO2017208972A1 - Method for manufacturing chemically strengthened glass plate and glass plate housing for chemical strengthening - Google Patents

Method for manufacturing chemically strengthened glass plate and glass plate housing for chemical strengthening Download PDF

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Publication number
WO2017208972A1
WO2017208972A1 PCT/JP2017/019599 JP2017019599W WO2017208972A1 WO 2017208972 A1 WO2017208972 A1 WO 2017208972A1 JP 2017019599 W JP2017019599 W JP 2017019599W WO 2017208972 A1 WO2017208972 A1 WO 2017208972A1
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WIPO (PCT)
Prior art keywords
glass plate
jig
glass
side edge
chemical strengthening
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Application number
PCT/JP2017/019599
Other languages
French (fr)
Japanese (ja)
Inventor
尚史 青山
明典 横田
出 鹿島
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旭硝子株式会社
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Publication date
Application filed by 旭硝子株式会社 filed Critical 旭硝子株式会社
Priority to JP2018520858A priority Critical patent/JP6954277B2/en
Publication of WO2017208972A1 publication Critical patent/WO2017208972A1/en

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
    • C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
    • C03B35/20—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by gripping tongs or supporting frames
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/673—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping

Definitions

  • the present invention relates to a method for producing a chemically strengthened glass sheet and a chemically strengthened glass sheet container used therefor.
  • a chemically strengthened glass plate is attached as a cover glass on the front surface of the display device, and functions to protect a liquid crystal display (LCD).
  • the chemically strengthened glass plate is manufactured by immersing a glass plate containing Na ions in a molten salt containing K ions. In actual production, it has been conventionally performed to immerse a glass plate in a molten salt using a support device capable of placing a plurality of glass plates at intervals.
  • Patent Document 1 is presented as a document that describes a supporting device that can be used for manufacturing a chemically strengthened glass plate.
  • Patent Document 1 discloses a supporting device used when heat-treating a glass plate. This support device has a structure in which the lower end edge of the glass plate is inserted into the groove of the separation comb and supported, and the upper end edge of the glass plate is supported by the separation comb or the separation rod.
  • the salt bath treatment in the chemical strengthening treatment is performed by immersing a glass plate in a molten salt having a temperature not higher than the glass transition point (for example, 400 ° C. to 530 ° C.) for ion exchange, thereby compressing the surface of the glass plate.
  • a molten salt having a temperature not higher than the glass transition point (for example, 400 ° C. to 530 ° C.) for ion exchange, thereby compressing the surface of the glass plate.
  • the present invention has been made in view of the above-described circumstances, and its purpose is to improve the productivity of chemically strengthened glass plates by chemically strengthening the glass plates with high quality and high yield. It is in providing the manufacturing method of a tempered glass plate, and the glass plate container for chemical strengthening.
  • the method for producing a chemically strengthened glass sheet of the present invention comprises: Grip the first side edge of the glass plate, Suspend the glass plate with the gripped first side edge upward, The glass plate is chemically strengthened by immersing it in a molten salt while suspending the glass plate and performing a salt bath treatment.
  • the glass plate container for chemical strengthening of the present invention is A chemically strengthened glass plate container that is used in the above-described method for producing a chemically strengthened glass plate and is put into the molten salt while storing a plurality of the glass plates, A frame that accommodates the plurality of glass plates; A first jig provided on an upper part of the frame body, holding the first side edge of each glass plate and suspending the glass plate with a gap between them; It is characterized by providing.
  • the load due to its own weight can be obtained by putting the first jig into the molten salt while holding the first side edge of the glass plate in a suspended state. It is possible to perform salt bath treatment on a plurality of glass plates while suppressing the application of. Thereby, a plurality of large and thin glass plates can be chemically strengthened while suppressing deformation due to low temperature creep.
  • the side edge is an area where the glass plate is gripped.
  • the side edge is preferably within 30 mm from the outer peripheral edge of the glass plate, more preferably within 20 mm from the outer peripheral edge, further preferably within 15 mm from the outer peripheral edge, and the outer peripheral edge. Within 10 mm is particularly preferable.
  • a tool may be provided.
  • the second side edge which is the other side edge of the lower side of the glass plate suspended by the upper first jig is used as the lower second jig.
  • the second jig for gripping the second side edge, which is the other side edge of the lower side of the suspended glass plate only needs to be able to prevent contact due to the shaking of the glass plates, and suppresses the shaking of the glass plate. It only needs to be able to grip as much as possible. That is, the gripping force of the second jig may be smaller than the gripping force of the first jig.
  • a plurality of the first jigs may be provided along the first side edge of the glass plate at intervals.
  • the glass plate container for chemical strengthening of this configuration by gripping the first side edge of the glass plate with a plurality of first jigs, compared to gripping with a single first jig, The external force applied to the first jig can be distributed to a plurality of first jigs, and the influence of the external force applied by holding the first jig on the glass plate can be suppressed as much as possible. it can.
  • the first jig may be supported by the frame through a flexible support member.
  • the first jig is supported by the support member having flexibility with respect to the frame body. This jig is displaced flexibly. Thereby, the external force given to a glass plate at the holding location with a 1st jig
  • the first jig is provided on each of a pair of sandwiching plates that sandwich and sandwich the glass plate, and a surface of the sandwiching plate that faces the glass plate. And a cushioning material.
  • the holding plate that holds the glass plate of the first jig includes the buffer material, so that the glass plate is damaged when holding the glass plate. Is difficult to follow.
  • the thermal expansion coefficient of the glass plate and the buffer material is substantially equal, so that damage due to temperature fluctuations during the chemical strengthening process can be suppressed as much as possible.
  • silica cloth, ceramic cloth, quartz glass, glass board, and blanket can be used as a buffer material other than the glass cloth.
  • a plurality of the second jigs may be provided along the second side edge of the glass plate at intervals.
  • the glass plate container for chemical strengthening of this configuration by gripping the second side edge of the glass plate with a plurality of second jigs, compared to gripping with a single second jig, The external force applied to the second jig can be dispersed to a plurality of second jigs, and the influence of the external force applied by holding the second jig on the glass plate can be suppressed as much as possible. it can.
  • the second jig may be supported by the frame body via a flexible support member.
  • the second jig is supported by the support member having flexibility with respect to the frame body, the second plate is made to follow the shaking of the glass plate.
  • This jig is displaced flexibly. Thereby, the external force provided to a glass plate at the holding location with a 2nd jig
  • the second jig is provided on each of a pair of holding plates that hold the glass plate and the opposing surfaces of the holding plate facing the glass plate. And a cushioning material.
  • the holding plate that holds the glass plate of the second jig sandwiches the glass plate, so that the glass plate is damaged when holding the glass plate. Is difficult to follow.
  • a glass cloth having the same quality as the glass plate is used as the buffer material, the thermal expansion coefficient of the glass plate and the buffer material is substantially equal, so that damage due to temperature fluctuations during the chemical strengthening process can be suppressed as much as possible.
  • silica cloth, ceramic cloth, quartz glass, glass board, and blanket can be used as a buffer material other than the glass cloth.
  • the manufacturing method of the chemically strengthened glass plate and the glass plate container for chemical strengthening which can improve the productivity of a chemically strengthened glass plate significantly by chemically strengthening a glass plate with high quality and a high yield Can provide.
  • FIG. 1 is a schematic perspective view of a chemically strengthened glass sheet container according to this embodiment used in the method for producing a chemically strengthened glass sheet of the present invention.
  • a chemically strengthening glass plate container (hereinafter referred to as a glass plate container) 1 of the present embodiment includes a rectangular parallelepiped box-shaped frame body 11. A plurality of glass plates G are accommodated inside.
  • the frame 11 includes a rectangular upper frame 12 and a rectangular lower frame 14, and the upper frame 12 and the lower frame 14 have four side frames arranged at the four corners. They are connected by a material 16 and arranged up and down.
  • a plurality of glass plates G have the longitudinal direction in the left-right direction (arrow A in the figure) and the short direction in the vertical direction (arrow B in the figure). Thus, they are housed side by side in the front-rear direction (arrow C in the figure).
  • the shape of the glass plate G stored side by side in the glass plate container 1 is not particularly limited. It may be a rectangular glass plate G, the corner of the glass plate G may be round, or a polygonal shape such as a triangular shape, an elliptical shape, or a circular shape.
  • the upper frame 12 is composed of two frame members 12a constituting the long side and two frame members 12b constituting the short side.
  • the lower frame 14 is composed of two pieces constituting the long side.
  • the frame members 12a and 12b of the upper frame 12, the frame members 14a and 14b of the lower frame 14, and the side frame member 16 are formed of, for example, a U-shaped channel or a hollow square pipe made of SUS304.
  • an expanded metal 14c made of SUS304 is attached to the entire inner surface surrounded by the frame members 14a and 14b of the lower frame 14, and even if a plurality of glass plates G are accommodated inside the glass plate accommodating body 1. In addition, it can sufficiently withstand conveyance and immersion in molten salt.
  • the frame body 11 is provided with a hanging tool 18 at the center portion in the front-rear direction on the two frame members 12b extending in the front-rear direction of the upper frame 12.
  • a hanging tool 18 at the center portion in the front-rear direction on the two frame members 12b extending in the front-rear direction of the upper frame 12.
  • hooks such as cranes are engaged with these hanging tools 18.
  • the hanging tool 18 may be provided in the location where the two frame materials 12a extended in the left-right direction and the two frame materials 12b extended in the front-back direction are connected.
  • the upper frame 12 is provided with a plurality of top bars 21 that extend in the front-rear direction, which is the direction in which the glass plates G are arranged (three are shown in the figure, but are not limited to three).
  • the lower frame 14 is provided with a plurality of bottom bars 22 (two are shown in the figure, but are not limited to two) extending in the front-rear direction, which is the direction in which the glass plates G are arranged.
  • the top bars 21 are arranged at equal intervals in the left-right direction which is the longitudinal direction of the frame body 11, two are arranged in the vicinity of both ends, and one is arranged in the center.
  • the bottom bars 22 are respectively disposed between the top bars 20 in the left-right direction.
  • the top bar 21 and the bottom bar 22 are alternately arranged along the left-right direction.
  • the top bar 21 and the bottom bar 22 are arranged so as to extend in the short direction of the frame body 11, but the top bar 21 and the bottom bar 22 are not limited thereto, and the frame body 11 is not limited thereto. It may be arranged so as to extend in the longitudinal direction. In this case, a plurality of glasses G are accommodated in the direction of arrow A. Further, the interval between the top bar 21 and the bottom bar 22 is not necessarily equal.
  • FIG. 2 is a view taken along the arrow D in FIG. 1 of the glass plate container for explaining the glass plate container in which the glass plate is housed.
  • a plurality of upper jigs (first jigs) 31 are provided on the upper portion of the frame body 11. These upper jigs 31 hold the first side edge G1 which is one side edge of the glass plate G.
  • the upper jigs 31 are supported by the respective top bars 21, whereby a plurality of upper jigs 31 (three in this example) are arranged along the first side edge G 1 of the glass plate G with a space between each other. One) is provided.
  • Each top bar 21 has a plurality of upper jigs 31 arranged at intervals in the longitudinal direction. Thereby, the plurality of glass plates G are suspended by the upper jig 31 with a gap in the front-rear direction, which is the alignment direction.
  • a plurality of lower jigs (second jigs) 32 are provided at the lower part of the frame body 11. These lower jigs 32 hold the second side edge G2, which is the other side edge facing the first side edge G1 of the glass plate G.
  • the lower jigs 32 are supported by the respective bottom bars 22, whereby a plurality (two in this example, two lower jigs 32 are provided along the second side edge G ⁇ b> 2 of the glass plate G at intervals. ) Is provided. Then, the glass plate G is held between the holding positions of the upper jig 31 in the left-right direction by the lower jig 32.
  • Each bottom bar 22 has a plurality of lower jigs 32 arranged at intervals in the longitudinal direction. As a result, the plurality of glass plates G are held by the lower jig 32 with a gap in the front-rear direction, which is the alignment direction.
  • the structure of the upper jig 31 and the lower jig 32 will be described. Since the upper jig 31 and the lower jig 32 have the same structure, the configuration of the upper jig 31 will be described here, and the description of the configuration of the lower jig 32 will be omitted.
  • FIG. 3 is a front view showing an embodiment of the upper jig provided in the glass plate container.
  • FIG. 4 is a side view showing an embodiment of the upper jig provided in the glass plate container.
  • the upper jig 31 includes a jig body 41, a clamping plate 42, and a fastening bolt 43.
  • the jig body 41 is formed in a U shape having a pair of side plate portions 45 facing each other and a fixed plate portion 46 connecting one side edges of these side plate portions 45.
  • Each side plate portion 45 is formed with at least one screw hole 45a, and at least one fastening bolt 43 is screwed into the screw hole 45a from the outside of the side plate portion 45.
  • the sandwiching plate 42 is disposed between the side plate portions 45 of the jig body 41 so that the sandwiching plates 42 face each other.
  • the pair of sandwiching plates 42 is provided with a buffer material 61 on opposing surfaces 51 a of the sandwiching plate 42 facing each other.
  • the buffer material 61 is made of a material having flexibility and elasticity as well as heat resistance.
  • a glass cloth made of glass fiber in particular, a woven fabric made of glass fiber having the same quality as the glass plate G, is used. preferable.
  • FIG. 5 is a front view showing another embodiment of the upper jig provided in the glass plate container.
  • FIG. 6 is a side view showing another embodiment of the upper jig provided in the glass plate container.
  • the upper jig 31 has a jig body 41, a clamping plate 42, and a fastening bolt 43.
  • the jig body 41 is formed in a U shape having a pair of side plate portions 45 facing each other and a fixed plate portion 46 connecting one side edges of these side plate portions 45.
  • At least one (two in FIGS. 5 and 6) screw holes 45a are formed on one side of the pair of side plate portions 45 facing each other, and these screw holes 45a are formed from the outside of the side plate portions 45.
  • At least one fastening bolt 43 is screwed.
  • the sandwiching plate 42 is disposed between the side plate portions 45 in the jig main body 41.
  • the glass plate G is surrounded by a surface 51 a opposite to the surface of the clamping plate 42 that contacts the fastening bolt 43, a surface 51 b of the side plate portion 45 facing the clamping plate 42, and a lower surface of the fixing plate portion 46.
  • a buffer material 61 is provided.
  • the buffer material 61 is made of a material having flexibility and elasticity as well as heat resistance. For example, a glass cloth made of glass fiber, in particular, a woven fabric made of glass fiber having the same quality as the glass plate G, is used. preferable.
  • the cushioning material 61 may be fixed to the sandwiching plate 42, or may be provided separately from the sandwiching plate 42.
  • the jig body 41 is provided with a locking portion 46a at the center of the fixed plate portion 46 when viewed from the front, and a support member 65 is locked to the locking portion 46a.
  • the support member 65 is a wire made of a material having flexibility and heat resistance, and the support member 65 made of this wire is fastened to the locking portion 46a.
  • the support member 65 is wound and fixed around the top bar 21 fixed to the upper frame 12 of the frame 11. As a result, the upper jig 31 is supported by the top bar 21 fixed to the upper frame 12 of the frame 11 via the flexible support member 65.
  • the support member 65 locked to the locking portion 46 a is wound and fixed on the bottom bar 22 fixed to the lower frame 14 of the frame body 11. Accordingly, the lower jig 32 is supported by the bottom bar 22 fixed to the lower frame 14 of the frame body 11 via the flexible support member 65.
  • the width dimension of the upper jig 31 and the lower jig 32 is preferably about 20 mm to 60 mm.
  • the fixing method of the jig body 41 is not limited to this, and instead of the support member 65 made of a wire, the center portion of the fixing plate portion 46 or the end portion of the support member 65 locked to the locking portion 46a.
  • the top bar 21 may be hooked so as to be provided with a hook.
  • the method for producing the chemically strengthened glass plate according to the present embodiment is not particularly limited, but a large and thin glass plate (for example, size: 2421 mm to 1200 mm ⁇ 1500 mm to 1000 mm, thickness: 0.3 mm) Useful for chemically strengthening ( ⁇ 0.4 mm).
  • tool 31 is mounted
  • the first side edge G1 of the glass plate G is disposed between the sandwiching plate portions 51 of the respective sandwiching plates 42, and the fastening bolts 43 are screwed in.
  • the glass plate G is sandwiched and held by the sandwiching plate portion 51 from both sides.
  • the upper jig 31 is attached to both the vicinity and the center of the first side edge G1 of the glass plate G.
  • the lower jig 32 is mounted on the second side edge G2 which is the other side edge facing the first side edge G1 of the glass plate G.
  • the second side edge G2 of the glass plate G is disposed between the clamping plate portions 51 of the respective clamping plates 42, and the fastening bolts 43 are screwed in.
  • the glass plate G is sandwiched and held by the sandwiching plate portion 51 from both sides.
  • the lower jig 32 is mounted between the upper jigs 31 on the second side edge G2 of the glass plate G.
  • the upper jig 31 may be attached to the glass plate G after the lower jig 32 is attached to the glass plate G.
  • the glass plate G is vertically arranged so that the first side edge G1 to which the upper jig 31 is attached is upward and the second side edge G2 to which the lower jig 32 is attached is downward. And housed inside the frame 11.
  • the support member 65 is inserted into the locking portion 46 a, wound around the top bar 21, and then fastened to support the upper jig 31 on the top bar 21 of the upper frame 12 by the support member 65. .
  • the glass plate G is suspended in the state which turned up the 1st side edge G1 which is the one side edge.
  • the upper jig 31 holds the glass plate G from both sides by the clamping plate portion 51 by screwing the fastening bolt 43. Therefore, if the screwing amount of each fastening bolt 43 is adjusted so that the gripping position of the glass plate G is the center position in the front-rear direction (left-right direction in FIG.
  • the gripping position of the glass plate G is the support member. It is substantially coincided with the hanging position by 65 in the vertical direction. If it does in this way, the effect
  • the lower jig 32 is supported on the bottom bar 22 of the lower frame 14 by the support member 65.
  • the second side edge G ⁇ b> 2 that is the other side edge of the glass plate G suspended inside the frame body 11 is held by the frame body 11.
  • the lower jig 32 may be attached to the second side edge G2 of the glass plate G, and the lower jig 32 may be supported by the bottom bar 22.
  • each glass plate G is suspended in the frame 11 and is accommodated in the frame 11 with a gap between them.
  • the glass plate G accommodated in the glass plate container 1 is subjected to various treatments for chemical strengthening.
  • the glass plate container 1 is put into a preheating furnace and subjected to heat treatment (heat treatment).
  • heat treatment heat treatment
  • the glass plate G is heated over time to gradually increase the temperature.
  • the hook is locked to the hanger 18 of the glass plate container 1 and lifted by a crane, the glass plate container 1 is put into the molten salt storage tank in which the molten salt is stored, and the glass plate G is replaced with the glass plate. It is immersed in the molten salt in a suspended state in the container 1 (salt bath treatment).
  • alkali metal ions typically Li ions, Na ions
  • alkali ions typically Li ions, Na ions
  • a compressive stress layer is formed on the glass surface and a tensile stress layer is formed inside the glass by exchanging with K ions.
  • the glass plate container 1 is pulled up from the molten salt storage tank and put into a slow cooling furnace to slowly cool the glass plate G (slow cooling treatment).
  • slow cooling treatment for example, the amount of heat whose output is controlled by an electric heater is supplied to a necessary position in the slow cooling furnace, and the glass sheet G conveyed in the slow cooling furnace is slowly cooled to a temperature range close to room temperature.
  • the glass plate container 1 is put in a washing tank, the glass plate G is washed, and finally, the cleaning solution attached to the surface of the glass plate G is washed away by a shower (cleaning process).
  • the glass plate G is a chemically strengthened chemically strengthened glass plate.
  • the glass plate G is immersed in the molten salt while being suspended, and the salt bath treatment is performed. Therefore, the weight of the glass plate G during the salt bath treatment is reduced. The application of the load due to can be suppressed. Therefore, for example, compared with the case where the glass plate G is leaned and subjected to the salt bath treatment, deformation due to low-temperature creep caused by concentration of a load such as its own weight on the lower end of the glass plate G during the salt bath treatment is suppressed. be able to. Thereby, the large and thin glass plate G can be chemically strengthened with high quality and high yield, and the productivity of the chemically strengthened glass plate can be greatly improved.
  • the 1st side edge G1 which is one side edge of the glass plate G is provided to the upper jig
  • the salt bath treatment can be performed on the plurality of glass plates G while suppressing the application of a load due to its own weight as much as possible. Thereby, a plurality of large and thin glass plates G can be chemically strengthened while suppressing deformation due to low temperature creep.
  • the glass plate suspended in the chemical strengthening step is held by the lower jig 32 by holding the second side edge G2 which is the other side edge of the lower side of the glass plate G suspended by the upper jig 31.
  • the upper side 31 of the glass plate G is gripped by the plurality of upper jigs 31 and the second side edge G2 of the lower side of the glass plate G is gripped by the plurality of lower jigs 32.
  • the external force applied when the upper jig 31 and the lower jig 32 are gripped can be dispersed.
  • tool 32 can be suppressed as much as possible.
  • the upper jig 31 and the lower jig 32 are supported by the support member 65 having flexibility with respect to the frame body 11, the upper jig 31 and the lower jig 32 are caused to follow the shaking of the glass plate G and the like.
  • the tool 32 is displaced flexibly. Thereby, the external force resulting from the shake
  • the holding plate 42 that holds the glass plate G of the upper jig 31 and the lower jig 32 includes the buffer material 61, the glass plate G is hardly damaged when the glass plate G is held.
  • the thermal expansion coefficient of the glass plate and the buffer material is substantially the same, so damage due to temperature fluctuations during the chemical strengthening process ( The occurrence of cracks in the glass plate G and the occurrence of scratches on the surface of the glass plate G) can be minimized.
  • the first side edge G1 of the glass plate G is held and suspended by the plurality of upper jigs 31, but the first upper jig 31 of the glass plate G is suspended by one long upper jig 31.
  • the side edge G1 may be held and suspended over substantially the entire length.
  • the second side edge G ⁇ b> 2 of the glass plate G may be gripped over substantially the entire length with one long lower jig 32.
  • the glass plates G sway during salt bath processing. If there is no contact, the lower jig 32 is not necessarily provided.
  • a partition wall interposed between the glass plates G may stand up from the bottom bar 22 so that the glass plates G are not shaken and contacted.
  • a glass plate having a G6 size (1800 mm ⁇ 1500 mm) and a thickness of 0.3 mm was supported by various support methods and chemically strengthened, and the finished product after chemical strengthening was evaluated.
  • the glass plate is manufactured by a float process in which molten glass is flowed over molten tin to form a smooth glass plate, the molten tin side during float forming is the lower surface side, and the opposite side from the molten tin during float forming Is the upper surface side.
  • Example 1 Place the glass plate with the first side edge (one side edge) upward and the second side edge (other side edge) downward, over three bottom bars arranged at equal intervals. The upper first side edge and both end edges were held so as not to fall down.
  • Example 1 The upper jig with a width dimension of 60 mm is used to grip and hang the vicinity of both ends and the center of the first side edge of the glass plate, and the upper jig with the lower side jig with a width dimension of 60 mm. Between the grip positions.
  • Example 2 The upper jig with a width dimension of 40 mm is used to grip and suspend the vicinity of both ends and the center of the first side edge of the glass plate, and the upper jig with the lower side jig of the width dimension of 40 mm. Between the grip positions.
  • Chemical strengthening treatment was performed by immersing in a molten salt at 400 ° C. containing potassium nitrate (KNO 3 ) as a main component for 4 hours.
  • Table 1 shows the results of each evaluation.
  • Example 1 Although slight warping occurred in the grip portion of the upper jig, it was confirmed that there was almost no distortion in the entire surface and the surface quality was very good. As a result, the evaluation of distortion was a pass ( ⁇ ). (4.1.3) Example 2 As in Example 1, a slight warp occurred in the grip portion of the upper jig, but there was almost no distortion in the entire surface, and it was confirmed that the surface quality was very good.
  • Example 2 The maximum value of the warp of the small piece was suppressed to 0.20 mm, and the ratio of the region where the warp was 0.3 mm or less was 100%. As a result, the evaluation of small piece warpage was a pass ( ⁇ ).
  • the production method according to the present invention in which the salt bath treatment is performed in a state where the glass plate is suspended is effective. According to this, it was found that the productivity of the chemically strengthened glass plate can be greatly improved.
  • the width dimension of the upper jig and the lower jig is preferably about 20 mm to 60 mm.
  • Glass plate container 11 for chemical strengthening Frame 31: Upper jig (first jig) 32: Lower jig (second jig) 42: sandwiching plate 61: buffer material 65: support member G: glass plate G1: first side edge G2: second side edge

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  • Materials Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
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Abstract

In the present invention, a glass plate (G) is chemically strengthened by holding a first side edge (G1) of the glass plate (G), suspending the glass plate (G) with the held first side edge (G1) placed upward, and dipping the glass plate (G) into molten salt while suspending the glass plate (G) for a salt bath treatment. This allows glass plates to be chemically strengthened at high yield and with high quality, and significantly improves the productivity of chemically strengthened glass plates.

Description

化学強化ガラス板の製造方法及び化学強化用ガラス板収容体Chemically strengthened glass plate manufacturing method and chemically strengthened glass plate container
　本発明は、化学強化ガラス板の製造方法及びそれに用いる化学強化用ガラス板収容体に関する。 The present invention relates to a method for producing a chemically strengthened glass sheet and a chemically strengthened glass sheet container used therefor.
　近年、携帯電話、スマートフォン、携帯情報端末（ＰＤＡ）、タブレットＰＣ等のディスプレイ装置が普及している。ディスプレイ装置の前面には、化学強化ガラス板がカバーガラスとして取り付けられており、液晶ディスプレイ（ＬＣＤ）を保護する機能を果たしている。化学強化ガラス板は、Ｎａイオンを含むガラス板を、Ｋイオンを含む溶融塩に浸漬するなどして製造される。実際の製造においては、複数のガラス板を間隔をあけて載置可能な支持装置を用いてガラス板を溶融塩に浸漬することが従来からおこなわれている。 In recent years, display devices such as mobile phones, smartphones, personal digital assistants (PDAs), and tablet PCs have become widespread. A chemically strengthened glass plate is attached as a cover glass on the front surface of the display device, and functions to protect a liquid crystal display (LCD). The chemically strengthened glass plate is manufactured by immersing a glass plate containing Na ions in a molten salt containing K ions. In actual production, it has been conventionally performed to immerse a glass plate in a molten salt using a support device capable of placing a plurality of glass plates at intervals.
　化学強化ガラス板の製造に利用可能な支持装置が記載された文献として、下記特許文献１を提示する。特許文献１には、ガラス板を熱処理加工する際に用いられる支持装置が示されている。この支持装置は、ガラス板の下端エッジを分離コームの溝に差し込んで支持するとともに、ガラス板の上端エッジを分離コームや分離ロッドで支持する構造となっている。 The following Patent Document 1 is presented as a document that describes a supporting device that can be used for manufacturing a chemically strengthened glass plate. Patent Document 1 discloses a supporting device used when heat-treating a glass plate. This support device has a structure in which the lower end edge of the glass plate is inserted into the groove of the separation comb and supported, and the upper end edge of the glass plate is supported by the separation comb or the separation rod.
日本国特表２０１０‐５２６７５３号公報Japanese National Table 2010-201053
　ところで、化学強化処理における塩浴処理は、ガラス板を、ガラス転移点以下の温度（例えば、４００℃～５３０℃）の溶融塩に浸漬させてイオン交換させることで、ガラス板の表面に圧縮応力層を形成し、ガラス板の内部に引張応力層を形成する処理である。 By the way, the salt bath treatment in the chemical strengthening treatment is performed by immersing a glass plate in a molten salt having a temperature not higher than the glass transition point (for example, 400 ° C. to 530 ° C.) for ion exchange, thereby compressing the surface of the glass plate This is a process of forming a layer and forming a tensile stress layer inside the glass plate.
　このとき、上記特許文献１に記載された支持装置のように、ガラス板の下端エッジを溝に差し込んで支持した場合、塩浴処理中にガラス板の自重によって、ガラス板に低温クリープによる曲げや歪みなどの変形が生じてしまうことが不可避であった。特に、大型で薄いガラス板では、低温クリープによる変形が顕著に現れるため、品質及び歩留りが低下し、生産効率が低下してしまうという問題点があった。 At this time, as in the support device described in Patent Document 1, when the lower edge of the glass plate is inserted into the groove and supported, the glass plate is bent by low temperature creep due to its own weight during the salt bath treatment. It is inevitable that deformation such as distortion occurs. In particular, large and thin glass plates are prone to deformation due to low-temperature creep, so that there is a problem that quality and yield are lowered and production efficiency is lowered.
　本発明は、上述した事情に鑑みてなされたものであり、その目的は、ガラス板を高品質かつ高い歩留りで化学強化させて化学強化ガラス板の生産性を大幅に向上させることが可能な化学強化ガラス板の製造方法及び化学強化用ガラス板収容体を提供することにある。 The present invention has been made in view of the above-described circumstances, and its purpose is to improve the productivity of chemically strengthened glass plates by chemically strengthening the glass plates with high quality and high yield. It is in providing the manufacturing method of a tempered glass plate, and the glass plate container for chemical strengthening.
　上記目的を達成するために、本発明の化学強化ガラス板の製造方法は、
　ガラス板の第一の側縁を把持し、
　把持した前記第一の側縁を上方にして前記ガラス板を吊り下げ、
　前記ガラス板を吊り下げながら溶融塩中へ浸漬させて塩浴処理を行うことで化学強化することを特徴とする。 In order to achieve the above object, the method for producing a chemically strengthened glass sheet of the present invention comprises:
Grip the first side edge of the glass plate,
Suspend the glass plate with the gripped first side edge upward,
The glass plate is chemically strengthened by immersing it in a molten salt while suspending the glass plate and performing a salt bath treatment.
　この化学強化ガラス板の製造方法によれば、ガラス板を吊り下げながら溶融塩中へ浸漬させて塩浴処理を行うので、塩浴処理中におけるガラス板への自重による荷重の付与を抑制することができる。したがって、例えば、ガラス板を立て掛けて塩浴処理させる場合と比較し、塩浴処理中にガラス板に自重などの荷重が付与されることで生じる低温クリープによる変形を抑えることができる。これにより、大型で薄いガラス板を高品質かつ高い歩留りで化学強化することができ、化学強化ガラス板の生産性を大幅に向上させることができる。 According to this method of manufacturing a chemically strengthened glass plate, since the salt bath treatment is performed by immersing the glass plate in the molten salt while suspending the glass plate, it is possible to suppress application of a load due to the weight of the glass plate during the salt bath treatment. Can do. Therefore, for example, as compared with a case where a glass plate is stood and subjected to a salt bath treatment, deformation due to low-temperature creep caused by applying a load such as its own weight to the glass plate during the salt bath treatment can be suppressed. Thereby, a large and thin glass plate can be chemically strengthened with high quality and high yield, and the productivity of the chemically strengthened glass plate can be greatly improved.
　また、本発明の化学強化用ガラス板収容体は、
　上記の化学強化ガラス板の製造方法において用いられ、複数の前記ガラス板を収納したまま前記溶融塩中に投入される化学強化用ガラス板収容体であって、
　複数の前記ガラス板が収容される枠体と、
　該枠体の上部に設けられ、それぞれの前記ガラス板の前記第一の側縁を把持してガラス板同士の隙間をあけて吊り下げる第一の治具と、
　を備えることを特徴とする。 Moreover, the glass plate container for chemical strengthening of the present invention is
A chemically strengthened glass plate container that is used in the above-described method for producing a chemically strengthened glass plate and is put into the molten salt while storing a plurality of the glass plates,
A frame that accommodates the plurality of glass plates;
A first jig provided on an upper part of the frame body, holding the first side edge of each glass plate and suspending the glass plate with a gap between them;
It is characterized by providing.
　この構成の化学強化用ガラス板収容体によれば、第一の治具にガラス板の第一の側縁を把持させて吊り下げた状態で溶融塩中に投入されることで、自重による荷重の付与を極力抑制しながら複数のガラス板に塩浴処理を行うことができる。これにより、低温クリープによる変形を抑えつつ大型で薄い複数のガラス板を化学強化することができる。 According to the glass plate container for chemical strengthening of this structure, the load due to its own weight can be obtained by putting the first jig into the molten salt while holding the first side edge of the glass plate in a suspended state. It is possible to perform salt bath treatment on a plurality of glass plates while suppressing the application of. Thereby, a plurality of large and thin glass plates can be chemically strengthened while suppressing deformation due to low temperature creep.
　側縁とは、ガラス板を把持する領域である。側縁は、ガラス板の外周端部から３０ｍｍ以内の範囲であることが好ましく、外周端部から２０ｍｍ以内の範囲であることがさらに好ましく、外周端部から１５ｍｍ以内がことさらに好ましく、外周端部から１０ｍｍ以内が特に好ましい。 The side edge is an area where the glass plate is gripped. The side edge is preferably within 30 mm from the outer peripheral edge of the glass plate, more preferably within 20 mm from the outer peripheral edge, further preferably within 15 mm from the outer peripheral edge, and the outer peripheral edge. Within 10 mm is particularly preferable.
　本発明の化学強化用ガラス板収容体において、前記枠体の下部に、吊り下げられたそれぞれの前記ガラス板の前記第一の側縁に対向する第二の側縁を把持する第二の治具が設けられていてもよい。 In the chemical strengthening glass plate container of the present invention, a second jig for gripping a second side edge opposite to the first side edge of each of the glass plates suspended below the frame body. A tool may be provided.
　この構成の化学強化用ガラス板収容体によれば、上部の第一の治具で吊り下げられたガラス板の下方側の他側縁である第二の側縁を下部の第二の治具で把持することで、吊り下げられたガラス板同士の揺れによる接触を防止することができる。これにより、隣接するガラス板同士の接触による損傷なく塩浴処理を行って化学強化することができる。
　吊り下げられたガラス板の下方側の他側縁である第二の側縁を把持する第二の治具は、ガラス板同士の揺れによる接触を防止できればよく、ガラス板の揺れを抑えることができる程度に把持できればよい。すなわち、第二の治具の把持力は、第一の治具の把持力よりも小さくてもよい。 According to the glass plate container for chemical strengthening of this structure, the second side edge which is the other side edge of the lower side of the glass plate suspended by the upper first jig is used as the lower second jig. By gripping with, it is possible to prevent contact due to shaking between the suspended glass plates. Thereby, it can chemically strengthen by performing a salt bath process without the damage by the contact between adjacent glass plates.
The second jig for gripping the second side edge, which is the other side edge of the lower side of the suspended glass plate, only needs to be able to prevent contact due to the shaking of the glass plates, and suppresses the shaking of the glass plate. It only needs to be able to grip as much as possible. That is, the gripping force of the second jig may be smaller than the gripping force of the first jig.
　本発明の化学強化用ガラス板収容体において、前記第一の治具は、互いに間隔をあけて前記ガラス板の前記第一の側縁に沿って複数設けられているものであってもよい。 In the chemical strengthening glass plate container of the present invention, a plurality of the first jigs may be provided along the first side edge of the glass plate at intervals.
　この構成の化学強化用ガラス板収容体によれば、複数の第一の治具でガラス板の第一の側縁を把持することで、単数の第一の治具で把持するのに比べ、第一の治具に付与される外力を複数の第一の治具へ分散させることができ、第一の治具で把持することで付与される外力によるガラス板への影響を極力抑えることができる。 According to the glass plate container for chemical strengthening of this configuration, by gripping the first side edge of the glass plate with a plurality of first jigs, compared to gripping with a single first jig, The external force applied to the first jig can be distributed to a plurality of first jigs, and the influence of the external force applied by holding the first jig on the glass plate can be suppressed as much as possible. it can.
　本発明の化学強化用ガラス板収容体において、前記第一の治具は、可撓性を有する支持部材を介して前記枠体に支持されているものであってもよい。 In the chemical strengthening glass plate container of the present invention, the first jig may be supported by the frame through a flexible support member.
　この構成の化学強化用ガラス板収容体によれば、枠体に対して可撓性を有する支持部材によって第一の治具が支持されているので、ガラス板の揺れ等に追従させて第一の治具が柔軟に変位することとなる。これにより、第一の治具での把持箇所でガラス板に付与される外力を極力抑えることができる。 According to the glass plate container for chemical strengthening having this configuration, the first jig is supported by the support member having flexibility with respect to the frame body. This jig is displaced flexibly. Thereby, the external force given to a glass plate at the holding location with a 1st jig | tool can be suppressed as much as possible.
　本発明の化学強化用ガラス板収容体において、前記第一の治具は、前記ガラス板を挟んで把持する一対の挟持板と、該挟持板における前記ガラス板との対向面にそれぞれ設けられた緩衝材と、を備えるものであってもよい。 In the chemical strengthening glass plate container of the present invention, the first jig is provided on each of a pair of sandwiching plates that sandwich and sandwich the glass plate, and a surface of the sandwiching plate that faces the glass plate. And a cushioning material.
　この構成の化学強化用ガラス板収容体によれば、第一の治具のガラス板を挟んで把持する挟持板が、緩衝材を備えているので、ガラス板を把持する際にガラス板に傷がつきづらくなる。特に、緩衝材として、ガラス板と同質のガラスクロスを用いれば、ガラス板と緩衝材との熱膨張率が略同等であるため、化学強化工程時の温度変動によるダメージを極力抑えることができる。
　また、ガラスクロス以外の緩衝材としては、シリカクロス、セラミッククロス、石英ガラス、ガラスボード、ブランケットを用いることができる。 According to the glass plate container for chemical strengthening of this configuration, the holding plate that holds the glass plate of the first jig includes the buffer material, so that the glass plate is damaged when holding the glass plate. Is difficult to follow. In particular, if a glass cloth having the same quality as the glass plate is used as the buffer material, the thermal expansion coefficient of the glass plate and the buffer material is substantially equal, so that damage due to temperature fluctuations during the chemical strengthening process can be suppressed as much as possible.
Moreover, as a buffer material other than the glass cloth, silica cloth, ceramic cloth, quartz glass, glass board, and blanket can be used.
　本発明の化学強化用ガラス板収容体において、前記第二の治具は、互いに間隔をあけて前記ガラス板の前記第二の側縁に沿って複数設けられているものであってもよい。 In the chemical strengthening glass plate container of the present invention, a plurality of the second jigs may be provided along the second side edge of the glass plate at intervals.
　この構成の化学強化用ガラス板収容体によれば、複数の第二の治具でガラス板の第二の側縁を把持することで、単数の第二の治具で把持するのに比べ、第二の治具に付与される外力を複数の第二の治具に分散させることができ、第二の治具で把持することで付与される外力によるガラス板への影響を極力抑えることができる。 According to the glass plate container for chemical strengthening of this configuration, by gripping the second side edge of the glass plate with a plurality of second jigs, compared to gripping with a single second jig, The external force applied to the second jig can be dispersed to a plurality of second jigs, and the influence of the external force applied by holding the second jig on the glass plate can be suppressed as much as possible. it can.
　本発明の化学強化用ガラス板収容体において、前記第二の治具は、可撓性を有する支持部材を介して前記枠体に支持されているものであってもよい。 In the chemical strengthening glass plate container of the present invention, the second jig may be supported by the frame body via a flexible support member.
　この構成の化学強化用ガラス板収容体によれば、枠体に対して可撓性を有する支持部材によって第二の治具が支持されているので、ガラス板の揺れ等に追従させて第二の治具が柔軟に変位することとなる。これにより、第二の治具での把持箇所でガラス板に付与される外力を極力抑えることができる。 According to the glass plate container for chemical strengthening of this structure, since the second jig is supported by the support member having flexibility with respect to the frame body, the second plate is made to follow the shaking of the glass plate. This jig is displaced flexibly. Thereby, the external force provided to a glass plate at the holding location with a 2nd jig | tool can be suppressed as much as possible.
　本発明の化学強化用ガラス板収容体において、前記第二の治具は、前記ガラス板を挟んで把持する一対の挟持板と、該挟持板における前記ガラス板との対向面にそれぞれ設けられた緩衝材と、を備えるものであってもよい。 In the chemical strengthening glass plate container of the present invention, the second jig is provided on each of a pair of holding plates that hold the glass plate and the opposing surfaces of the holding plate facing the glass plate. And a cushioning material.
　この構成の化学強化用ガラス板収容体によれば、第二の治具のガラス板を挟んで把持する挟持板が、緩衝材を備えているので、ガラス板を把持する際にガラス板に傷がつきづらくなる。特に、緩衝材として、ガラス板と同質のガラスクロスを用いれば、ガラス板と緩衝材との熱膨張率が略同等であるため、化学強化工程時の温度変動によるダメージを極力抑えることができる。
　また、ガラスクロス以外の緩衝材としては、シリカクロス、セラミッククロス、石英ガラス、ガラスボード、ブランケットを用いることができる。 According to the glass plate container for chemical strengthening of this structure, the holding plate that holds the glass plate of the second jig sandwiches the glass plate, so that the glass plate is damaged when holding the glass plate. Is difficult to follow. In particular, if a glass cloth having the same quality as the glass plate is used as the buffer material, the thermal expansion coefficient of the glass plate and the buffer material is substantially equal, so that damage due to temperature fluctuations during the chemical strengthening process can be suppressed as much as possible.
Moreover, as a buffer material other than the glass cloth, silica cloth, ceramic cloth, quartz glass, glass board, and blanket can be used.
　本発明によれば、ガラス板を高品質かつ高い歩留りで化学強化させて化学強化ガラス板の生産性を大幅に向上させることが可能な化学強化ガラス板の製造方法及び化学強化用ガラス板収容体を提供できる。 ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the chemically strengthened glass plate and the glass plate container for chemical strengthening which can improve the productivity of a chemically strengthened glass plate significantly by chemically strengthening a glass plate with high quality and a high yield Can provide.
本発明の化学強化ガラス板の製造方法に用いられる一実施形態に係る化学強化用ガラス板収容体の概略斜視図である。It is a schematic perspective view of the glass plate container for chemical strengthening which concerns on one Embodiment used for the manufacturing method of the chemically strengthened glass plate of this invention. 図１のガラス板収容体におけるＤ矢視図である。It is D arrow line view in the glass plate container of FIG. ガラス板収容体に設けられた上部治具の一実施形態の正面図である。It is a front view of one embodiment of the upper jig provided in the glass plate container. ガラス板収容体に設けられた上部治具の一実施形態の側面図である。It is a side view of one Embodiment of the upper jig | tool provided in the glass plate container. ガラス板収容体に設けられた上部治具の他の実施形態の正面図である。It is a front view of other embodiment of the upper jig provided in the glass plate container. ガラス板収容体に設けられた上部治具の他の実施形態の側面図である。It is a side view of other embodiment of the upper jig | tool provided in the glass plate container.
　以下、本発明に係る化学強化ガラス板の製造方法及び化学強化用ガラス板収容体の一実施形態を、図面を参照して説明する。 Hereinafter, an embodiment of a method for producing a chemically strengthened glass sheet and a glass sheet container for chemical strengthening according to the present invention will be described with reference to the drawings.
　まず、化学強化ガラス板の製造方法に用いる化学強化用ガラス板収容体について説明する。
　図１は、本発明の化学強化ガラス板の製造方法に用いられる本実施形態に係る化学強化用ガラス板収容体の概略斜視図である。 First, the glass plate container for chemical strengthening used for the manufacturing method of a chemically strengthened glass plate is demonstrated.
FIG. 1 is a schematic perspective view of a chemically strengthened glass sheet container according to this embodiment used in the method for producing a chemically strengthened glass sheet of the present invention.
　図１に示すように、本実施形態の化学強化用ガラス板収容体（以下、ガラス板収容体と呼ぶ）１は、直方体形状の箱型の枠体１１を備えており、この枠体１１の内側に複数枚のガラス板Ｇが収容される。 As shown in FIG. 1, a chemically strengthening glass plate container (hereinafter referred to as a glass plate container) 1 of the present embodiment includes a rectangular parallelepiped box-shaped frame body 11. A plurality of glass plates G are accommodated inside.
　枠体１１は、矩形状の上フレーム１２と、同じく矩形状の下フレーム１４とを備えており、これらの上フレーム１２と下フレーム１４は、それぞれの四隅に配置された四本の側方枠材１６で連結されて上下に配置されている。そして、ガラス板収容体１の枠体１１の内部には、複数のガラス板Ｇが、長手方向が左右方向（図中矢印Ａ）に且つ短手方向が鉛直方向（図中矢印Ｂ）になるように前後方向（図中矢印Ｃ）に並べて収容される。
　ガラス板収容体１に並べて収納されるガラス板Ｇの形状は特に制限されない。矩形状のガラス板Ｇであってもよいし、ガラス板Ｇのコーナー部がラウンド形状となっていてもよいし、三角形状などの多角形形状、楕円形状、円形状であってもよい。 The frame 11 includes a rectangular upper frame 12 and a rectangular lower frame 14, and the upper frame 12 and the lower frame 14 have four side frames arranged at the four corners. They are connected by a material 16 and arranged up and down. And in the inside of the frame 11 of the glass plate container 1, a plurality of glass plates G have the longitudinal direction in the left-right direction (arrow A in the figure) and the short direction in the vertical direction (arrow B in the figure). Thus, they are housed side by side in the front-rear direction (arrow C in the figure).
The shape of the glass plate G stored side by side in the glass plate container 1 is not particularly limited. It may be a rectangular glass plate G, the corner of the glass plate G may be round, or a polygonal shape such as a triangular shape, an elliptical shape, or a circular shape.
　上フレーム１２は、長辺を構成する二本の枠材１２ａと短辺を構成する二本の枠材１２ｂとから構成されており、同様に、下フレーム１４は、長辺を構成する二本の枠材１４ａと短辺を構成する二本の枠材１４ｂとから構成されている。上フレーム１２の枠材１２ａ，１２ｂ、下フレーム１４の枠材１４ａ，１４ｂ及び側方枠材１６は、例えば、ＳＵＳ３０４製の断面Ｕ字形状のチャンネルまたは中空状の角パイプで構成されている。さらに、下フレーム１４の枠材１４ａ、１４ｂで囲まれた内部全面には、ＳＵＳ３０４製のエキスパンドメタル１４ｃが取り付けられており、ガラス板収容体１の内部に複数のガラス板Ｇを収容しても、搬送及び溶融塩への浸漬に対して十分耐え得るようになっている。 The upper frame 12 is composed of two frame members 12a constituting the long side and two frame members 12b constituting the short side. Similarly, the lower frame 14 is composed of two pieces constituting the long side. Frame member 14a and two frame members 14b constituting the short side. The frame members 12a and 12b of the upper frame 12, the frame members 14a and 14b of the lower frame 14, and the side frame member 16 are formed of, for example, a U-shaped channel or a hollow square pipe made of SUS304. Further, an expanded metal 14c made of SUS304 is attached to the entire inner surface surrounded by the frame members 14a and 14b of the lower frame 14, and even if a plurality of glass plates G are accommodated inside the glass plate accommodating body 1. In addition, it can sufficiently withstand conveyance and immersion in molten salt.
　また、枠体１１には、上フレーム１２のうち前後方向に延びる２本の枠材１２ｂ上における前後方向中央部に吊具１８が設けられている。これらの吊具１８には、ガラス板収容体１を吊り上げる際に、例えばクレーン等のフック（図示略）が係止される。また、吊具１８は、左右方向に延びる２本の枠材１２ａと前後方向に延びる２本の枠材１２ｂとが接続される箇所に設けられていてもよい。 Further, the frame body 11 is provided with a hanging tool 18 at the center portion in the front-rear direction on the two frame members 12b extending in the front-rear direction of the upper frame 12. When the glass plate container 1 is lifted, hooks (not shown) such as cranes are engaged with these hanging tools 18. Moreover, the hanging tool 18 may be provided in the location where the two frame materials 12a extended in the left-right direction and the two frame materials 12b extended in the front-back direction are connected.
　上フレーム１２には、ガラス板Ｇの並び方向である前後方向に延びるトップバー２１が複数（図では３本示されているが、３本に限定されるものではない。）設けられている。また、下フレーム１４には、ガラス板Ｇの並び方向である前後方向に延びるボトムバー２２が複数（図では２本示されているが、２本に限定されるものではない。）設けられている。トップバー２１は、枠体１１の長手方向である左右方向に等間隔に配置されており、２本が両端近傍に配置され、１本が中央部に配置されている。ボトムバー２２は、それぞれ左右方向におけるトップバー２０同士の間に配置されている。これにより、トップバー２１とボトムバー２２とは、左右方向に沿って交互に配置されている。
　なお、図１においては、トップバー２１及びボトムバー２２が、枠体１１の短手方向に延在するように配置されているが、これに限らず、トップバー２１およびボトムバー２２は、枠体１１の長手方向に延在するように配置されていてもよい。この場合、複数のガラスＧが矢印Ａ方向に並べて収容される。また、トップバー２１及びボトムバー２２の間隔は、必ずしも等間隔でなくてもよい。 The upper frame 12 is provided with a plurality of top bars 21 that extend in the front-rear direction, which is the direction in which the glass plates G are arranged (three are shown in the figure, but are not limited to three). The lower frame 14 is provided with a plurality of bottom bars 22 (two are shown in the figure, but are not limited to two) extending in the front-rear direction, which is the direction in which the glass plates G are arranged. . The top bars 21 are arranged at equal intervals in the left-right direction which is the longitudinal direction of the frame body 11, two are arranged in the vicinity of both ends, and one is arranged in the center. The bottom bars 22 are respectively disposed between the top bars 20 in the left-right direction. Thereby, the top bar 21 and the bottom bar 22 are alternately arranged along the left-right direction.
In FIG. 1, the top bar 21 and the bottom bar 22 are arranged so as to extend in the short direction of the frame body 11, but the top bar 21 and the bottom bar 22 are not limited thereto, and the frame body 11 is not limited thereto. It may be arranged so as to extend in the longitudinal direction. In this case, a plurality of glasses G are accommodated in the direction of arrow A. Further, the interval between the top bar 21 and the bottom bar 22 is not necessarily equal.
　図２は、ガラス板が収容されたガラス板収容体を説明するガラス板収容体の図１におけるＤ矢視図である。
　図２に示すように、枠体１１の上部には、複数の上部治具（第一の治具）３１が設けられている。これらの上部治具３１は、ガラス板Ｇの一側縁である第一の側縁Ｇ１を把持するものである。上部治具３１は、それぞれのトップバー２１に支持されており、これにより、上部治具３１は、互いに間隔をあけてガラス板Ｇの第一の側縁Ｇ１に沿って複数（本例では３つ）設けられている。そして、これらの上部治具３１によって、ガラス板Ｇは、その第一の側縁Ｇ１が、両端近傍と中央部とで把持されて吊り下げられる。各トップバー２１には、その長手方向に複数の上部治具３１が間隔をあけて配列されている。これにより、複数枚のガラス板Ｇは、上部治具３１によって並び方向である前後方向に隙間をあけて吊り下げられる。 FIG. 2 is a view taken along the arrow D in FIG. 1 of the glass plate container for explaining the glass plate container in which the glass plate is housed.
As shown in FIG. 2, a plurality of upper jigs (first jigs) 31 are provided on the upper portion of the frame body 11. These upper jigs 31 hold the first side edge G1 which is one side edge of the glass plate G. The upper jigs 31 are supported by the respective top bars 21, whereby a plurality of upper jigs 31 (three in this example) are arranged along the first side edge G 1 of the glass plate G with a space between each other. One) is provided. And by these upper jig | tools 31, the 1st side edge G1 is hold | gripped by the vicinity of both ends, and the center part, and the glass plate G is suspended. Each top bar 21 has a plurality of upper jigs 31 arranged at intervals in the longitudinal direction. Thereby, the plurality of glass plates G are suspended by the upper jig 31 with a gap in the front-rear direction, which is the alignment direction.
　また、枠体１１の下部には、複数の下部治具（第二の治具）３２が設けられている。これらの下部治具３２は、ガラス板Ｇの第一の側縁Ｇ１に対向する他側縁である第二の側縁Ｇ２を把持するものである。下部治具３２は、それぞれのボトムバー２２に支持されており、これにより、下部治具３２は、互いに間隔をあけてガラス板Ｇの第二の側縁Ｇ２に沿って複数（本例では２つ）設けられている。そして、これらの下部治具３２によって、ガラス板Ｇは、その第二の側縁Ｇ２が、左右方向における上部治具３１での把持位置間で把持される。各ボトムバー２２には、その長手方向に複数の下部治具３２が間隔をあけて配列されている。これにより、複数枚のガラス板Ｇは、下部治具３２によって並び方向である前後方向に隙間をあけて把持される。 Further, a plurality of lower jigs (second jigs) 32 are provided at the lower part of the frame body 11. These lower jigs 32 hold the second side edge G2, which is the other side edge facing the first side edge G1 of the glass plate G. The lower jigs 32 are supported by the respective bottom bars 22, whereby a plurality (two in this example, two lower jigs 32 are provided along the second side edge G <b> 2 of the glass plate G at intervals. ) Is provided. Then, the glass plate G is held between the holding positions of the upper jig 31 in the left-right direction by the lower jig 32. Each bottom bar 22 has a plurality of lower jigs 32 arranged at intervals in the longitudinal direction. As a result, the plurality of glass plates G are held by the lower jig 32 with a gap in the front-rear direction, which is the alignment direction.
　次に、上部治具３１及び下部治具３２の構造について説明する。なお、上部治具３１と下部治具３２とは、同一構造であるので、ここでは、上部治具３１の構成を説明し、下部治具３２については、その構成の説明を省略する。 Next, the structure of the upper jig 31 and the lower jig 32 will be described. Since the upper jig 31 and the lower jig 32 have the same structure, the configuration of the upper jig 31 will be described here, and the description of the configuration of the lower jig 32 will be omitted.
　図３は、ガラス板収容体に設けられた上部治具の一実施形態を示す正面図である。図４は、ガラス板収容体に設けられた上部治具の一実施形態を示す側面図である。
　図３及び図４に示すように、上部治具３１は、治具本体４１と、挟持板４２と、締結ボルト４３とを有している。治具本体４１は、互いに対向する一対の側板部４５と、これらの側板部４５の一側縁を繋ぐ固定板部４６とを有するコ字状に形成されている。それぞれの側板部４５には、少なくとも一つのネジ孔４５ａが形成されており、これらのネジ孔４５ａには、側板部４５の外側から少なくとも一つの締結ボルト４３がねじ込まれている。挟持板４２は、治具本体４１における両側板部４５の間に、それぞれの挟持板４２が互いに対向するように配置されている。一対の挟持板４２は、挟持板４２の互いに対向する対向面５１ａに、緩衝材６１が設けられている。この緩衝材６１は、耐熱性とともに、柔軟性や弾性を有する材料からなるもので、例えば、ガラス繊維、特に、ガラス板Ｇと同質のガラス繊維から作った織布からなるガラスクロスを用いるのが好ましい。 FIG. 3 is a front view showing an embodiment of the upper jig provided in the glass plate container. FIG. 4 is a side view showing an embodiment of the upper jig provided in the glass plate container.
As shown in FIGS. 3 and 4, the upper jig 31 includes a jig body 41, a clamping plate 42, and a fastening bolt 43. The jig body 41 is formed in a U shape having a pair of side plate portions 45 facing each other and a fixed plate portion 46 connecting one side edges of these side plate portions 45. Each side plate portion 45 is formed with at least one screw hole 45a, and at least one fastening bolt 43 is screwed into the screw hole 45a from the outside of the side plate portion 45. The sandwiching plate 42 is disposed between the side plate portions 45 of the jig body 41 so that the sandwiching plates 42 face each other. The pair of sandwiching plates 42 is provided with a buffer material 61 on opposing surfaces 51 a of the sandwiching plate 42 facing each other. The buffer material 61 is made of a material having flexibility and elasticity as well as heat resistance. For example, a glass cloth made of glass fiber, in particular, a woven fabric made of glass fiber having the same quality as the glass plate G, is used. preferable.
　互いに対向する挟持板４２の間にガラス板Ｇを配置した状態で少なくとも一つの締結ボルト４３をねじ込むことで、緩衝材６１を介してガラス板Ｇを挟持板４２によって挟持して把持する。 When at least one fastening bolt 43 is screwed in a state where the glass plate G is disposed between the sandwiching plates 42 opposed to each other, the glass plate G is sandwiched and held by the sandwiching plate 42 via the buffer material 61.
　また、図５は、ガラス板収容体に設けられた上部治具の他の実施形態を示す正面図である。図６は、ガラス板収容体に設けられた上部治具の他の実施形態を示す側面図である。
　図５及び図６に示すように、上部治具３１は、治具本体４１と、挟持板４２と、締結ボルト４３とを有している。治具本体４１は、互いに対向する一対の側板部４５と、これらの側板部４５の一側縁を繋ぐ固定板部４６とを有するコ字状に形成されている。互いに対向する一対の側板部４５の片側には、少なくとも一つ（図５、６においては二つ）のネジ孔４５ａが形成されており、これらのネジ孔４５ａには、側板部４５の外側から少なくとも一つの締結ボルト４３がねじ込まれている。挟持板４２は、治具本体４１における両側板部４５の間に配置されている。挟持板４２の締結ボルト４３が接触する面とは反対側の面５１ａと、挟持板４２に対向する側板部４５の面５１ｂと、固定板部４６の下部面に、ガラス板Ｇを囲むように緩衝材６１が設けられている。
　この緩衝材６１は、耐熱性とともに、柔軟性や弾性を有する材料からなるもので、例えば、ガラス繊維、特に、ガラス板Ｇと同質のガラス繊維から作った織布からなるガラスクロスを用いるのが好ましい。緩衝材６１は、挟持板４２に固着されていてもよく、また、挟持板４２と別体に設けたものであってもよい。 FIG. 5 is a front view showing another embodiment of the upper jig provided in the glass plate container. FIG. 6 is a side view showing another embodiment of the upper jig provided in the glass plate container.
As shown in FIGS. 5 and 6, the upper jig 31 has a jig body 41, a clamping plate 42, and a fastening bolt 43. The jig body 41 is formed in a U shape having a pair of side plate portions 45 facing each other and a fixed plate portion 46 connecting one side edges of these side plate portions 45. At least one (two in FIGS. 5 and 6) screw holes 45a are formed on one side of the pair of side plate portions 45 facing each other, and these screw holes 45a are formed from the outside of the side plate portions 45. At least one fastening bolt 43 is screwed. The sandwiching plate 42 is disposed between the side plate portions 45 in the jig main body 41. The glass plate G is surrounded by a surface 51 a opposite to the surface of the clamping plate 42 that contacts the fastening bolt 43, a surface 51 b of the side plate portion 45 facing the clamping plate 42, and a lower surface of the fixing plate portion 46. A buffer material 61 is provided.
The buffer material 61 is made of a material having flexibility and elasticity as well as heat resistance. For example, a glass cloth made of glass fiber, in particular, a woven fabric made of glass fiber having the same quality as the glass plate G, is used. preferable. The cushioning material 61 may be fixed to the sandwiching plate 42, or may be provided separately from the sandwiching plate 42.
　挟持板４２と側板部４５の間にガラス板Ｇを配置した状態で少なくとも一つの締結ボルト４３をねじ込むことで、緩衝材６１を介してガラス板Ｇを挟持板４２と側板部４５によって挟持して把持する。 By screwing at least one fastening bolt 43 in a state where the glass plate G is disposed between the sandwich plate 42 and the side plate portion 45, the glass plate G is sandwiched between the sandwich plate 42 and the side plate portion 45 via the buffer material 61. Hold it.
　治具本体４１には、正面から見て固定板部４６の中央部に、係止部４６ａが設けられており、この係止部４６ａには、支持部材６５が係止されている。支持部材６５は、可撓性及び耐熱性を有する材料からなる線材であり、この線材からなる支持部材６５は、係止部４６ａに緊結されている。この支持部材６５は、枠体１１の上フレーム１２に固定されたトップバー２１に巻回されて固定される。これにより、上部治具３１は、可撓性を有する支持部材６５を介して枠体１１の上フレーム１２に固定されたトップバー２１に支持される。 The jig body 41 is provided with a locking portion 46a at the center of the fixed plate portion 46 when viewed from the front, and a support member 65 is locked to the locking portion 46a. The support member 65 is a wire made of a material having flexibility and heat resistance, and the support member 65 made of this wire is fastened to the locking portion 46a. The support member 65 is wound and fixed around the top bar 21 fixed to the upper frame 12 of the frame 11. As a result, the upper jig 31 is supported by the top bar 21 fixed to the upper frame 12 of the frame 11 via the flexible support member 65.
　なお、下部治具３２では、係止部４６ａに係止させた支持部材６５を、枠体１１の下フレーム１４に固定されたボトムバー２２に巻回して固定する。これにより、下部治具３２は、可撓性を有する支持部材６５を介して枠体１１の下フレーム１４に固定されたボトムバー２２に支持される。上部治具３１及び下部治具３２の幅寸法は、２０ｍｍ～６０ｍｍ程度とするのが望ましい。
　治具本体４１の固定方法はこれに限定されるものではなく、線材による支持部材６５に替えて、固定板部４６の中央部や、係止部４６ａに係止される支持部材６５の端部にフックを備えるようにして、トップバー２１に掛止してもよい。 In the lower jig 32, the support member 65 locked to the locking portion 46 a is wound and fixed on the bottom bar 22 fixed to the lower frame 14 of the frame body 11. Accordingly, the lower jig 32 is supported by the bottom bar 22 fixed to the lower frame 14 of the frame body 11 via the flexible support member 65. The width dimension of the upper jig 31 and the lower jig 32 is preferably about 20 mm to 60 mm.
The fixing method of the jig body 41 is not limited to this, and instead of the support member 65 made of a wire, the center portion of the fixing plate portion 46 or the end portion of the support member 65 locked to the locking portion 46a. The top bar 21 may be hooked so as to be provided with a hook.
　次に、上記構成の化学強化用ガラス板収容体１を用いた一実施形態に係る化学強化ガラス板の製造方法について説明する。なお、本実施形態に係る化学強化ガラス板の製造方法は、特に限定されるものではないが、サイズが大きく薄いガラス板（例えば、サイズ：２４２１ｍｍ～１２００ｍｍ×１５００ｍｍ～１０００ｍｍ、厚さ：０．３ｍｍ～０．４ｍｍ）を化学強化するのに有用である。 Next, a method for producing a chemically strengthened glass sheet according to an embodiment using the chemically strengthened glass sheet container 1 having the above-described configuration will be described. The method for producing the chemically strengthened glass plate according to the present embodiment is not particularly limited, but a large and thin glass plate (for example, size: 2421 mm to 1200 mm × 1500 mm to 1000 mm, thickness: 0.3 mm) Useful for chemically strengthening (˜0.4 mm).
（治具取付工程）
　まず、処理対象のガラス板Ｇに対して、その一側縁である第一の側縁Ｇ１に上部治具３１を装着する。具体的には、それぞれの挟持板４２の挟持板部５１の間にガラス板Ｇの第一の側縁Ｇ１を配置して締結ボルト４３をねじ込む。これにより、ガラス板Ｇを挟持板部５１によって両側から挟んで把持させる。上部治具３１は、ガラス板Ｇの第一の側縁Ｇ１における両端近傍及び中央部に装着する。 (Jig mounting process)
First, the upper jig | tool 31 is mounted | worn with respect to the glass plate G of a process target to the 1st side edge G1 which is the one side edge. Specifically, the first side edge G1 of the glass plate G is disposed between the sandwiching plate portions 51 of the respective sandwiching plates 42, and the fastening bolts 43 are screwed in. As a result, the glass plate G is sandwiched and held by the sandwiching plate portion 51 from both sides. The upper jig 31 is attached to both the vicinity and the center of the first side edge G1 of the glass plate G.
　次に、ガラス板Ｇの第一の側縁Ｇ１と対向する他側縁である第二の側縁Ｇ２に下部治具３２を装着する。具体的には、それぞれの挟持板４２の挟持板部５１の間にガラス板Ｇの第二の側縁Ｇ２を配置して締結ボルト４３をねじ込む。これにより、ガラス板Ｇを挟持板部５１によって両側から挟んで把持させる。下部治具３２は、ガラス板Ｇの第二の側縁Ｇ２における上部治具３１の間に装着する。なお、下部治具３２をガラス板Ｇに装着した後に、上部治具３１をガラス板Ｇに装着しても良い。 Next, the lower jig 32 is mounted on the second side edge G2 which is the other side edge facing the first side edge G1 of the glass plate G. Specifically, the second side edge G2 of the glass plate G is disposed between the clamping plate portions 51 of the respective clamping plates 42, and the fastening bolts 43 are screwed in. As a result, the glass plate G is sandwiched and held by the sandwiching plate portion 51 from both sides. The lower jig 32 is mounted between the upper jigs 31 on the second side edge G2 of the glass plate G. The upper jig 31 may be attached to the glass plate G after the lower jig 32 is attached to the glass plate G.
（吊り下げ工程）
　次に、ガラス板Ｇを、上部治具３１が装着された第一の側縁Ｇ１が上方となり、下部治具３２が装着された第二の側縁Ｇ２が下方となるように、鉛直に配置させて枠体１１の内部に収容させる。 (Hanging process)
Next, the glass plate G is vertically arranged so that the first side edge G1 to which the upper jig 31 is attached is upward and the second side edge G2 to which the lower jig 32 is attached is downward. And housed inside the frame 11.
　そして、例えば、支持部材６５を係止部４６ａ内に挿通させ、トップバー２１に巻回した後に、緊結することで、上部治具３１を支持部材６５によって上フレーム１２のトップバー２１に支持させる。これにより、枠体１１の内部において、ガラス板Ｇを、その一側縁である第一の側縁Ｇ１を上にした状態で吊り下げる。このとき、上部治具３１は、締結ボルト４３をねじ込むことで、ガラス板Ｇを挟持板部５１によって両側から挟んで把持している。したがって、各締結ボルト４３のねじ込み量を調整してガラス板Ｇの把持位置を上部治具３１における前後方向（図４における左右方向）の中央位置とすれば、ガラス板Ｇの把持位置が支持部材６５による吊り下げ位置と鉛直方向に略一致される。このようにすると、吊り下げられたガラス板Ｇにおける上部治具３１での把持箇所への曲げモーメントの作用を極力抑えることができる。 Then, for example, the support member 65 is inserted into the locking portion 46 a, wound around the top bar 21, and then fastened to support the upper jig 31 on the top bar 21 of the upper frame 12 by the support member 65. . Thereby, in the inside of the frame 11, the glass plate G is suspended in the state which turned up the 1st side edge G1 which is the one side edge. At this time, the upper jig 31 holds the glass plate G from both sides by the clamping plate portion 51 by screwing the fastening bolt 43. Therefore, if the screwing amount of each fastening bolt 43 is adjusted so that the gripping position of the glass plate G is the center position in the front-rear direction (left-right direction in FIG. 4) of the upper jig 31, the gripping position of the glass plate G is the support member. It is substantially coincided with the hanging position by 65 in the vertical direction. If it does in this way, the effect | action of the bending moment to the holding location in the upper jig | tool 31 in the suspended glass plate G can be suppressed as much as possible.
　さらに、下部治具３２を支持部材６５によって下フレーム１４のボトムバー２２に支持させる。これにより、枠体１１の内部で吊り下げたガラス板Ｇの他側縁である第二の側縁Ｇ２を枠体１１に保持させる。なお、ガラス板Ｇを吊り下げた後に、ガラス板Ｇの第二の側縁Ｇ２に下部治具３２を装着し、この下部治具３２をボトムバー２２に支持させても良い。 Further, the lower jig 32 is supported on the bottom bar 22 of the lower frame 14 by the support member 65. Thereby, the second side edge G <b> 2 that is the other side edge of the glass plate G suspended inside the frame body 11 is held by the frame body 11. Note that after the glass plate G is suspended, the lower jig 32 may be attached to the second side edge G2 of the glass plate G, and the lower jig 32 may be supported by the bottom bar 22.
　そして、処理対象の全てのガラス板Ｇについて、第一の側縁Ｇ１を上にした状態で枠体１１内において吊り下げ、下方の第二の側縁Ｇ２を枠体１１に保持させる。 Then, all the glass plates G to be processed are suspended in the frame 11 with the first side edge G1 facing upward, and the lower second side edge G2 is held by the frame 11.
　このようにすると、各ガラス板Ｇは、枠体１１内で吊り下げられ、しかも、互いに隙間をあけた状態で、枠体１１内に収容される。 In this way, each glass plate G is suspended in the frame 11 and is accommodated in the frame 11 with a gap between them.
（化学強化工程）
　ガラス板収容体１に収容したガラス板Ｇに対して、化学強化のための各種の処理を施す。 (Chemical strengthening process)
The glass plate G accommodated in the glass plate container 1 is subjected to various treatments for chemical strengthening.
　この化学強化工程では、まず、ガラス板収容体１を予熱炉に投入して加熱処理を施す（加熱処理）。予熱炉では、ガラス板Ｇを、時間をかけて加熱し、徐々に温度を高める。 In this chemical strengthening step, first, the glass plate container 1 is put into a preheating furnace and subjected to heat treatment (heat treatment). In the preheating furnace, the glass plate G is heated over time to gradually increase the temperature.
　続いて、ガラス板収容体１の吊具１８にフックを係止させてクレーンで持ち上げ、溶融塩が貯留された溶融塩貯留槽内にガラス板収容体１を投入し、ガラス板Ｇをガラス板収容体１内において吊り下げた状態で溶融塩に浸漬させる（塩浴処理）。 Subsequently, the hook is locked to the hanger 18 of the glass plate container 1 and lifted by a crane, the glass plate container 1 is put into the molten salt storage tank in which the molten salt is stored, and the glass plate G is replaced with the glass plate. It is immersed in the molten salt in a suspended state in the container 1 (salt bath treatment).
　この塩浴処理は、ガラス転移点以下の温度でイオン交換によりガラス表面のイオン半径が小さなアルカリ金属イオン（典型的にはＬｉイオン、Ｎａイオン）をイオン半径のより大きなアルカリイオン（典型的にはＫイオン）に交換することで、ガラス表面に圧縮応力層を、ガラス内部に引張応力層を、各々形成する処理である。 In this salt bath treatment, alkali metal ions (typically Li ions, Na ions) having a small ion radius on the glass surface are exchanged by ion exchange at temperatures below the glass transition point, and alkali ions (typically Li ions, Na ions) having a larger ion radius (typically In this process, a compressive stress layer is formed on the glass surface and a tensile stress layer is formed inside the glass by exchanging with K ions.
　塩浴処理後、溶融塩貯留槽からガラス板収容体１を引き揚げて徐冷炉に投入してガラス板Ｇを徐冷する（徐冷処理）。徐冷処理は、例えば、電気ヒータにより、その出力が制御された熱量を徐冷炉内の必要位置に供給して徐冷炉内を搬送されるガラス板Ｇを常温に近い温度域までゆっくり冷却する。このようにすることにより、ガラス板Ｇに反りや割れが発生するのを抑制することができる。 After the salt bath treatment, the glass plate container 1 is pulled up from the molten salt storage tank and put into a slow cooling furnace to slowly cool the glass plate G (slow cooling treatment). In the slow cooling process, for example, the amount of heat whose output is controlled by an electric heater is supplied to a necessary position in the slow cooling furnace, and the glass sheet G conveyed in the slow cooling furnace is slowly cooled to a temperature range close to room temperature. By doing in this way, it can suppress that curvature and a crack generate | occur | produce in the glass plate G. FIG.
　次に、ガラス板収容体１を洗浄槽に入れ、ガラス板Ｇを洗浄し、最後にシャワーにより、ガラス板Ｇの表面についた洗浄液を洗い流す（洗浄処理）。 Next, the glass plate container 1 is put in a washing tank, the glass plate G is washed, and finally, the cleaning solution attached to the surface of the glass plate G is washed away by a shower (cleaning process).
　上記工程により、ガラス板Ｇは、化学強化された化学強化ガラス板とされる。 Through the above process, the glass plate G is a chemically strengthened chemically strengthened glass plate.
　ところで、化学強化工程の塩浴処理では、ガラス転移点以下の温度（例えば、４００℃～５３０℃）の溶融塩に浸漬されているガラス板Ｇに自重などの荷重が集中して作用すると、ガラス板Ｇに低温クリープによる曲げや歪みなどの変形が生じるおそれがある。 By the way, in the salt bath treatment in the chemical strengthening process, when a load such as its own weight acts on the glass plate G immersed in a molten salt having a temperature not higher than the glass transition point (for example, 400 ° C. to 530 ° C.), There is a possibility that deformation such as bending or distortion may occur in the plate G due to low temperature creep.
　しかし、本実施形態に係る化学強化ガラス板の製造方法によれば、ガラス板Ｇを吊り下げながら溶融塩中へ浸漬させて塩浴処理を行うので、塩浴処理中におけるガラス板Ｇへの自重による荷重の付与を抑制することができる。したがって、例えば、ガラス板Ｇを立て掛けて塩浴処理させる場合と比較し、塩浴処理中にガラス板Ｇの下端に自重などの荷重が集中して付与されることで生じる低温クリープによる変形を抑えることができる。これにより、大型で薄いガラス板Ｇを高品質かつ高い歩留りで化学強化することができ、化学強化ガラス板の生産性を大幅に向上させることができる。 However, according to the method for producing a chemically strengthened glass plate according to the present embodiment, the glass plate G is immersed in the molten salt while being suspended, and the salt bath treatment is performed. Therefore, the weight of the glass plate G during the salt bath treatment is reduced. The application of the load due to can be suppressed. Therefore, for example, compared with the case where the glass plate G is leaned and subjected to the salt bath treatment, deformation due to low-temperature creep caused by concentration of a load such as its own weight on the lower end of the glass plate G during the salt bath treatment is suppressed. be able to. Thereby, the large and thin glass plate G can be chemically strengthened with high quality and high yield, and the productivity of the chemically strengthened glass plate can be greatly improved.
　そして、本実施形態に係る化学強化ガラス板の製造方法において用いられる化学強化用ガラス板収容体１によれば、上部治具３１にガラス板Ｇの一側縁である第一の側縁Ｇ１を把持させて吊り下げた状態で溶融塩中に投入されることで、自重による荷重の付与を極力抑制しながら複数のガラス板Ｇに塩浴処理を行うことができる。これにより、低温クリープによる変形を抑えつつ大型で薄い複数のガラス板Ｇを化学強化することができる。 And according to the glass plate container 1 for chemical strengthening used in the manufacturing method of the chemically strengthened glass plate which concerns on this embodiment, the 1st side edge G1 which is one side edge of the glass plate G is provided to the upper jig | tool 31. FIG. By throwing into the molten salt while being held and suspended, the salt bath treatment can be performed on the plurality of glass plates G while suppressing the application of a load due to its own weight as much as possible. Thereby, a plurality of large and thin glass plates G can be chemically strengthened while suppressing deformation due to low temperature creep.
　また、上部治具３１で吊り下げられたガラス板Ｇの下方側の他側縁である第二の側縁Ｇ２を下部治具３２で把持することで、化学強化工程における吊り下げられたガラス板Ｇの動きを抑制することで、ガラス板Ｇ同士の揺れによる接触を防止し、さらに、ガラス板Ｇの局所変形も防止することができる。これにより、隣接するガラス板Ｇ同士の接触による損傷や局所変形なく塩浴処理を行って化学強化することができる。 Moreover, the glass plate suspended in the chemical strengthening step is held by the lower jig 32 by holding the second side edge G2 which is the other side edge of the lower side of the glass plate G suspended by the upper jig 31. By suppressing the movement of G, it is possible to prevent contact due to shaking between the glass plates G, and it is also possible to prevent local deformation of the glass plate G. Thereby, it can chemically strengthen by performing a salt bath process, without the damage by the contact of adjacent glass plates G, and local deformation | transformation.
　しかも、複数の上部治具３１でガラス板Ｇの上方側の第一の側縁Ｇ１を把持し、複数の下部治具３２でガラス板Ｇの下方側の第二の側縁Ｇ２を把持することで、上部治具３１及び下部治具３２で把持する際に付与される外力を分散させることができる。これにより、上部治具３１及び下部治具３２で把持することで付与される外力によるガラス板Ｇへの影響を極力抑えることができる。 Moreover, the upper side 31 of the glass plate G is gripped by the plurality of upper jigs 31 and the second side edge G2 of the lower side of the glass plate G is gripped by the plurality of lower jigs 32. Thus, the external force applied when the upper jig 31 and the lower jig 32 are gripped can be dispersed. Thereby, the influence on the glass plate G by the external force provided by gripping with the upper jig | tool 31 and the lower jig | tool 32 can be suppressed as much as possible.
　また、枠体１１に対して可撓性を有する支持部材６５によって上部治具３１及び下部治具３２が支持されているので、ガラス板Ｇの揺れ等に追従させて上部治具３１及び下部治具３２が柔軟に変位することとなる。これにより、上部治具３１及び下部治具３２での把持箇所で、ガラス板Ｇに付与されるガラス板収容体の揺れ等に起因する外力を抑えることができる。さらに、化学強化工程中にガラス板の自重によって、ガラス板に低温クリープによる曲げや歪みなどの変形が生ずることを抑えることができる。 In addition, since the upper jig 31 and the lower jig 32 are supported by the support member 65 having flexibility with respect to the frame body 11, the upper jig 31 and the lower jig 32 are caused to follow the shaking of the glass plate G and the like. The tool 32 is displaced flexibly. Thereby, the external force resulting from the shake | fluctuation etc. of the glass plate container provided to the glass plate G can be suppressed in the grip location in the upper jig | tool 31 and the lower jig | tool 32. FIG. Furthermore, it is possible to suppress the glass plate from undergoing deformation such as bending or distortion due to low temperature creep due to its own weight during the chemical strengthening process.
　さらに、上部治具３１及び下部治具３２のガラス板Ｇを挟んで把持する挟持板４２が、緩衝材６１を備えているので、ガラス板Ｇを把持する際にガラス板Ｇに傷がつきづらくなる。特に、緩衝材６１として、ガラス板Ｇと同質のガラスクロス（ガラス繊維）を用いれば、ガラス板と緩衝材との熱膨張率が略同等であるため、化学強化工程時の温度変動によるダメージ（ガラス板Ｇの割れやガラス板Ｇ表面の傷発生）を極力抑えることができる。　　　 Further, since the holding plate 42 that holds the glass plate G of the upper jig 31 and the lower jig 32 includes the buffer material 61, the glass plate G is hardly damaged when the glass plate G is held. Become. In particular, if a glass cloth (glass fiber) of the same quality as the glass plate G is used as the buffer material 61, the thermal expansion coefficient of the glass plate and the buffer material is substantially the same, so damage due to temperature fluctuations during the chemical strengthening process ( The occurrence of cracks in the glass plate G and the occurrence of scratches on the surface of the glass plate G) can be minimized. *
　なお、上記実施形態では、複数の上部治具３１でガラス板Ｇの第一の側縁Ｇ１を把持して吊り下げたが、一つの長尺の上部治具３１によってガラス板Ｇの第一の側縁Ｇ１を略全長にわたって把持して吊り下げても良い。同様に、複数の下部治具３２に代えて、一つの長尺の下部治具３２によってガラス板Ｇの第二の側縁Ｇ２を略全長にわたって把持しても良い。 In the above-described embodiment, the first side edge G1 of the glass plate G is held and suspended by the plurality of upper jigs 31, but the first upper jig 31 of the glass plate G is suspended by one long upper jig 31. The side edge G1 may be held and suspended over substantially the entire length. Similarly, instead of the plurality of lower jigs 32, the second side edge G <b> 2 of the glass plate G may be gripped over substantially the entire length with one long lower jig 32.
　また、上記実施形態では、上部治具３１で吊り下げたガラス板Ｇの下方側の第二の側縁Ｇ２を下部治具３２で把持したが、塩浴処理中にガラス板Ｇ同士が揺れて接触することがなければ、下部治具３２は、必ずしも設けなくても良い。例えば、ガラス板Ｇ同士が揺れて接触しないように、ガラス板Ｇ同士の間に介在する仕切り壁がボトムバー２２から起立してもよい。 Moreover, in the said embodiment, although the 2nd side edge G2 of the downward side of the glass plate G suspended with the upper jig | tool 31 was hold | gripped with the lower jig | tool 32, the glass plates G sway during salt bath processing. If there is no contact, the lower jig 32 is not necessarily provided. For example, a partition wall interposed between the glass plates G may stand up from the bottom bar 22 so that the glass plates G are not shaken and contacted.
　Ｇ６サイズ（１８００ｍｍ×１５００ｍｍ）で厚さ０．３ｍｍのガラス板を各種の支持方法によって支持して化学強化し、化学強化後の仕上がりの評価を行った。なお、ガラス板は、溶融させたガラスを溶融錫上に流して平滑なガラス板とするフロート法によって製造し、フロート成形時における溶融錫側を下面側とし、フロート成形時における溶融錫と反対側を上面側とする。 A glass plate having a G6 size (1800 mm × 1500 mm) and a thickness of 0.3 mm was supported by various support methods and chemically strengthened, and the finished product after chemical strengthening was evaluated. The glass plate is manufactured by a float process in which molten glass is flowed over molten tin to form a smooth glass plate, the molten tin side during float forming is the lower surface side, and the opposite side from the molten tin during float forming Is the upper surface side.
（１）支持方法
（１．１）比較例１
　第一の側縁（一側縁）を上方にして第二の側縁（他側縁）を下方にしたガラス板を等間隔に配置した３本のボトムバーに架け渡すように載せ、ガラス板が倒れないように、上方の第一の側縁及び両端縁を保持させた。
（１．２）実施例１
　幅寸法６０ｍｍの上部治具でガラス板の第一の側縁における両端近傍及び中央部を把持して吊り下げ、幅寸法６０ｍｍの下部治具でガラス板の第二の側縁における上部治具での把持位置の間を把持した。
（１．３）実施例２
　幅寸法４０ｍｍの上部治具でガラス板の第一の側縁における両端近傍及び中央部を把持して吊り下げ、幅寸法４０ｍｍの下部治具でガラス板の第二の側縁における上部治具での把持位置の間を把持した。 (1) Support method (1.1) Comparative example 1
Place the glass plate with the first side edge (one side edge) upward and the second side edge (other side edge) downward, over three bottom bars arranged at equal intervals. The upper first side edge and both end edges were held so as not to fall down.
(1.2) Example 1
The upper jig with a width dimension of 60 mm is used to grip and hang the vicinity of both ends and the center of the first side edge of the glass plate, and the upper jig with the lower side jig with a width dimension of 60 mm. Between the grip positions.
(1.3) Example 2
The upper jig with a width dimension of 40 mm is used to grip and suspend the vicinity of both ends and the center of the first side edge of the glass plate, and the upper jig with the lower side jig of the width dimension of 40 mm. Between the grip positions.
（２）化学強化処理
　硝酸カリウム（ＫＮＯ３）を主成分とする４００℃の溶融塩に４時間浸漬させることで化学強化を行った。 (2) Chemical strengthening treatment Chemical strengthening was performed by immersing in a molten salt at 400 ° C. containing potassium nitrate (KNO 3 ) as a main component for 4 hours.
（３）評価項目
（３．１）歪み
　化学強化後のガラス板を定盤上に載せ、ガラス板の外観における歪み等の変形の有無を確認して評価した。
（３．２）下面側反り
　化学強化後のガラス板の下面側における仮想平面に対する反りの最大値をゲージで測定して評価した。
（３．３）上面側反り
　化学強化後のガラス板の上面側における仮想平面に対する反りの最大値をゲージで測定して評価した。
（３．４）小片反り
　化学強化後のガラス板を切断して小片（１５６ｍｍ×７７ｍｍ）に加工し、その小片における反りの最大値及び反りが０．３ｍｍ以下の領域の割合を測定して評価した。 (3) Evaluation item (3.1) Distortion The glass plate after chemical strengthening was placed on a surface plate, and the presence or absence of deformation such as distortion in the appearance of the glass plate was confirmed and evaluated.
(3.2) Lower surface side warpage The maximum value of warpage with respect to the virtual plane on the lower surface side of the chemically strengthened glass plate was measured by a gauge and evaluated.
(3.3) Upper surface side warpage The maximum value of the warpage with respect to the virtual plane on the upper surface side of the chemically strengthened glass plate was measured with a gauge and evaluated.
(3.4) Small warpage The glass plate after chemical strengthening is cut and processed into small pieces (156 mm x 77 mm), and the maximum value of the warp and the ratio of the area where the warp is 0.3 mm or less are measured and evaluated. did.
（４）評価結果
　各評価における合否を表１に示す。 (4) Evaluation results Table 1 shows the results of each evaluation.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　各評価項目の結果は以下のようになった。
（４．１）歪みの評価結果
（４．１．１）比較例１
　面全体における歪みや窪みがあり、外観から面品質が良くないことが確認された。その結果、歪みの評価は不合格（×）であった。
（４．１．２）実施例１
　上部治具での把持部分に僅かな反りが生じたが、面全体における歪みはほとんどなく、面品質が非常に良好であることが確認できた。その結果、歪みの評価は合格（○）であった。
（４．１．３）実施例２
　実施例１と同様に、上部治具での把持部分に僅かな反りが生じたが、面全体における歪みはほとんどなく、面品質が非常に良好であることが確認できた。その結果、歪みの評価は合格（○）であった。
（４．２）下面側反りの評価結果
（４．２．１）比較例１
　ボトムバーとの接触箇所に大きな反りが生じ、反りの最大値は１．３５ｍｍとなった。その結果、下面側反りの評価は不合格（×）であった。
（４．２．２）実施例１
　大きな反りはなく、反りの最大値は０．７５ｍｍに抑えられていた。その結果、下面側反りの評価は合格（○）であった。
（４．２．３）実施例２
　実施例１と同様に、大きな反りはなく、反りの最大値は０．５５ｍｍとさらに抑えられていた。その結果、下面側反りの評価は合格（○）であった。
（４．３）上面側反りの評価結果
（４．３．１）比較例１
　大きな反りはなく、反りの最大値は０．３７ｍｍであった。その結果、上面側反りの評価は合格（○）であった。
（４．３．２）実施例１
　反りの最大値は０．４５ｍｍとなり、許容範囲内の反りであるため、上面側反りの評価は合格（○）であった。
（４．３．３）実施例２
　大きな反りはなく、反りの最大値は０．１５ｍｍに抑えられていた。その結果、上面側反りの評価は合格（○）であった。
（４．４）小片反りの評価結果
（４．４．１）比較例１
　小片の反りの最大値は０．６５ｍｍと大きくなり、反りが０．３ｍｍ以下の領域の割合は７７．８％と少なかった。その結果、小片反りの評価は不合格（×）であった。
（４．４．２）実施例１
　小片の反りの最大値は０．３５ｍｍに抑えられ、反りが０．３ｍｍ以下の領域の割合は９０．１％と大きな割合であった。その結果、小片反りの評価は合格（○）であった。
（４．４．３）実施例２
　小片の反りの最大値は０．２０ｍｍに抑えられ、反りが０．３ｍｍ以下の領域の割合は１００％であった。その結果、小片反りの評価は合格（○）であった。 The results of each evaluation item are as follows.
(4.1) Evaluation result of strain (4.1.1) Comparative example 1
There were distortions and depressions in the entire surface, and it was confirmed from the appearance that the surface quality was not good. As a result, the evaluation of distortion was rejected (x).
(4.1.2) Example 1
Although slight warping occurred in the grip portion of the upper jig, it was confirmed that there was almost no distortion in the entire surface and the surface quality was very good. As a result, the evaluation of distortion was a pass (◯).
(4.1.3) Example 2
As in Example 1, a slight warp occurred in the grip portion of the upper jig, but there was almost no distortion in the entire surface, and it was confirmed that the surface quality was very good. As a result, the evaluation of distortion was a pass (◯).
(4.2) Evaluation result of lower surface side warpage (4.2.1) Comparative Example 1
A large warp occurred at the contact point with the bottom bar, and the maximum value of the warp was 1.35 mm. As a result, the evaluation of the lower surface side warp was rejected (x).
(4.2.2) Example 1
There was no large warp, and the maximum value of the warp was suppressed to 0.75 mm. As a result, the evaluation of the lower surface side warp was a pass (◯).
(4.2.3) Example 2
As in Example 1, there was no large warp, and the maximum value of the warp was further suppressed to 0.55 mm. As a result, the evaluation of the lower surface side warp was a pass (◯).
(4.3) Evaluation result of upper surface side warpage (4.3.1) Comparative Example 1
There was no large warp, and the maximum value of the warp was 0.37 mm. As a result, the evaluation of the upper surface side warpage was a pass (◯).
(4.3.2) Example 1
The maximum value of the warpage was 0.45 mm, and the warpage was within the allowable range, so the evaluation of the upper surface side warpage was a pass (◯).
(4.3.3) Example 2
There was no large warp, and the maximum value of the warp was suppressed to 0.15 mm. As a result, the evaluation of the upper surface side warpage was a pass (◯).
(4.4) Evaluation result of small warpage (4.4.1) Comparative example 1
The maximum value of the warp of the small piece was as large as 0.65 mm, and the ratio of the region where the warp was 0.3 mm or less was as small as 77.8%. As a result, the evaluation of small piece warpage was rejected (x).
(4.4.2) Example 1
The maximum value of the warp of the small piece was suppressed to 0.35 mm, and the ratio of the region where the warp was 0.3 mm or less was a large ratio of 90.1%. As a result, the evaluation of small piece warpage was a pass (◯).
(4.4.3) Example 2
The maximum value of the warp of the small piece was suppressed to 0.20 mm, and the ratio of the region where the warp was 0.3 mm or less was 100%. As a result, the evaluation of small piece warpage was a pass (◯).
（５）結論
　上記の評価結果から、比較例１の支持方法によって化学強化する場合、塩浴処理中にガラス板の第二の側縁（下側縁）に自重などの荷重が集中して作用し、ガラス板に低温クリープによる変形が生じたと考えられる。これに対して、実施例１，２の支持方法によって化学強化する場合、塩浴処理中において、吊り下げたガラス板には自重などの荷重の集中的な付与が抑制されるため、低温クリープによる変形が抑えられたと考えられる。 (5) Conclusion From the above evaluation results, when chemical strengthening is performed by the support method of Comparative Example 1, a load such as its own weight is concentrated on the second side edge (lower edge) of the glass plate during the salt bath treatment. However, it is considered that the glass plate was deformed by low temperature creep. On the other hand, when chemically strengthening by the support method of Examples 1 and 2, during the salt bath treatment, the concentrated application of loads such as its own weight to the suspended glass plate is suppressed, and therefore by low temperature creep It is thought that deformation was suppressed.
　このことから、大型で薄いガラス板を高品質かつ高い歩留りで化学強化するには、ガラス板を吊り下げた状態で塩浴処理を行う本発明に係る製造方法が有効であり、この製造方法によれば、化学強化ガラス板の生産性を大幅に向上させることができることがわかった。 Therefore, in order to chemically strengthen a large and thin glass plate with high quality and high yield, the production method according to the present invention in which the salt bath treatment is performed in a state where the glass plate is suspended is effective. According to this, it was found that the productivity of the chemically strengthened glass plate can be greatly improved.
　また、実施例１と実施例２の評価結果から、塩浴処理中にガラス板を吊り下げる上部治具及び下部治具としては、幅寸法が小さい方がより変形を抑えられることがわかった。ただし、上部治具及び下部治具の幅寸法が小さ過ぎると、把持力が集中してガラス板に付与され、ガラス板Ｇが破損したり、かえって変形が増加したりするおそれがある。このことから、上部治具及び下部治具の幅寸法は、２０ｍｍ～６０ｍｍ程度とするのが好ましい。 Also, from the evaluation results of Example 1 and Example 2, it was found that as the upper jig and the lower jig for suspending the glass plate during the salt bath treatment, the smaller the width dimension, the more the deformation can be suppressed. However, if the width dimension of the upper jig and the lower jig is too small, the gripping force is concentrated and applied to the glass plate, and the glass plate G may be damaged or the deformation may be increased. Therefore, the width dimension of the upper jig and the lower jig is preferably about 20 mm to 60 mm.
　以上、本発明の化学強化ガラス板の製造方法及び化学強化用ガラス板収容体について詳細に説明したが、本発明は、以上の例には限定されず、本発明の要旨を逸脱しない範囲において、各種の改良や変形を行ってもよいのはもちろんである。 As described above, the method for producing a chemically strengthened glass sheet and the glass sheet container for chemical strengthening of the present invention have been described in detail, but the present invention is not limited to the above examples, and in a range not departing from the gist of the present invention, Of course, various improvements and modifications may be made.
　本出願は、２０１６年５月３０日出願の日本特許出願２０１６－１０７４９４に基づくものであり、その内容はここに参照として取り込まれる。 This application is based on Japanese Patent Application No. 2016-107494 filed on May 30, 2016, the contents of which are incorporated herein by reference.
１：化学強化用ガラス板収容体
１１：枠体
３１：上部治具（第一の治具）
３２：下部治具（第二の治具）
４２：挟持板
６１：緩衝材
６５：支持部材
Ｇ：ガラス板
Ｇ１：第一の側縁
Ｇ２：第二の側縁
  1: Glass plate container 11 for chemical strengthening: Frame 31: Upper jig (first jig)
32: Lower jig (second jig)
42: sandwiching plate 61: buffer material 65: support member G: glass plate G1: first side edge G2: second side edge

Claims (9)

  1. 　ガラス板の第一の側縁を把持し、
    　把持した前記第一の側縁を上方にして前記ガラス板を吊り下げ、
    　前記ガラス板を吊り下げながら溶融塩中へ浸漬させて塩浴処理を行うことで化学強化する
    　ことを特徴とする化学強化ガラス板の製造方法。     Grip the first side edge of the glass plate,
    Suspend the glass plate with the gripped first side edge upward,
    A method for producing a chemically tempered glass plate, wherein the glass plate is chemically strengthened by immersing the glass plate in a molten salt while performing a salt bath treatment.
  2. 　化学強化ガラス板の製造方法において用いられ、複数のガラス板を収納したまま溶融塩中に投入される化学強化用ガラス板収容体であって、
    　複数のガラス板が収容される枠体と、
    　該枠体の上部に設けられ、それぞれの前記ガラス板の前記第一の側縁を把持して互いに隙間をあけて吊り下げる第一の治具と、
    　を備える
    　ことを特徴とする化学強化用ガラス板収容体。     A chemically strengthened glass plate container that is used in a method for producing a chemically strengthened glass plate and is charged into a molten salt while storing a plurality of glass plates,
    A frame that houses a plurality of glass plates;
    A first jig provided on an upper portion of the frame body, holding the first side edge of each of the glass plates and suspending the gaps from each other;
    A glass plate container for chemical strengthening, comprising:
  3. 　前記枠体の下部に、吊り下げられたそれぞれの前記ガラス板の前記第一の側縁に対向する第二の側縁を把持する第二の治具が設けられている
    　ことを特徴とする請求項２に記載の化学強化用ガラス板収容体。     A second jig for gripping a second side edge opposite to the first side edge of each of the suspended glass plates is provided at a lower portion of the frame body. Item 3. A glass plate container for chemical strengthening according to Item 2.
  4. 　前記第一の治具は、互いに間隔をあけて前記ガラス板の前記第一の側縁に沿って複数設けられている
    　ことを特徴とする請求項２または請求項３に記載の化学強化用ガラス板収容体。     The said 1st jig | tool is provided with two or more along the said 1st side edge of the said glass plate at intervals, The glass for chemical strengthening of Claim 2 or Claim 3 characterized by the above-mentioned. Plate container.
  5. 　前記第一の治具は、可撓性を有する支持部材を介して前記枠体に支持されている
    　ことを特徴とする請求項２から請求項４のいずれか一項に記載の化学強化用ガラス板収容体。     The glass for chemical strengthening according to any one of claims 2 to 4, wherein the first jig is supported by the frame body via a flexible support member. Plate container.
  6. 　前記第一の治具は、
    　前記ガラス板を挟んで把持する一対の挟持板と、
    　該挟持板における前記ガラス板との対向面にそれぞれ設けられた緩衝材と、
    　を備えることを特徴とする請求項２から請求項５のいずれか一項に記載の化学強化用ガラス板収容体。     The first jig is
    A pair of sandwiching plates that sandwich and sandwich the glass plate;
    A cushioning material provided on each surface of the sandwiching plate facing the glass plate;
    The glass plate container for chemical strengthening according to any one of claims 2 to 5, comprising:
  7. 　前記第二の治具は、互いに間隔をあけて前記ガラス板の前記第二の側縁に沿って複数設けられている
    　ことを特徴とする請求項３に記載の化学強化用ガラス板収容体。     The said 2nd jig | tool is provided with two or more along the said 2nd side edge of the said glass plate at intervals, The glass plate container for chemical strengthening of Claim 3 characterized by the above-mentioned.
  8. 　前記第二の治具は、可撓性を有する支持部材を介して前記枠体に支持されている
    　ことを特徴とする請求項３または請求項４に記載の化学強化用ガラス板収容体。     The glass plate container for chemical strengthening according to claim 3 or 4, wherein the second jig is supported by the frame through a flexible support member.
  9. 　前記第二の治具は、
    　前記ガラス板を挟んで把持する一対の挟持板と、
    　該挟持板における前記ガラス板との対向面にそれぞれ設けられた緩衝材と、
    　を備えることを特徴とする請求項３から請求項５のいずれか一項に記載の化学強化用ガラス板収容体。
          The second jig is
    A pair of sandwiching plates that sandwich and sandwich the glass plate;
    A cushioning material provided on each surface of the sandwiching plate facing the glass plate;
    The glass plate container for chemical strengthening according to any one of claims 3 to 5, comprising:
PCT/JP2017/019599 2016-05-30 2017-05-25 Method for manufacturing chemically strengthened glass plate and glass plate housing for chemical strengthening WO2017208972A1 (en)

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JP2016-107494 2016-05-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112794651A (en) * 2021-01-11 2021-05-14 黄探花 Ion exchange tank for chemically toughened glass

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5659632A (en) * 1979-10-18 1981-05-23 Asahi Glass Co Ltd Glass article tempering apparatus against liquid cooling
JP2000219479A (en) * 1999-02-01 2000-08-08 Central Glass Co Ltd Hanging accessory for glass plate
US6516634B1 (en) * 1999-02-12 2003-02-11 The Penn State Research Foundation Strengthening, crack arrest and multiple cracking in brittle materials using residual stresses
JP2006056610A (en) * 2004-08-17 2006-03-02 Kyokuhei Glass Kako Kk Holder for transferring glass substrate, and storage method in box for conveying glass substrate using the same
JP2007326584A (en) * 2006-06-06 2007-12-20 Asahi Glass Co Ltd Packing tool, packing container, packing material, glass substrate packing method, and packing material unpacking method
JP2008094402A (en) * 2006-10-06 2008-04-24 Asahi Glass Co Ltd Packing box, package, glass substrate packing method, and package unpacking method
JP2013100196A (en) * 2011-11-08 2013-05-23 Apple Inc Glass tempering apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5659632A (en) * 1979-10-18 1981-05-23 Asahi Glass Co Ltd Glass article tempering apparatus against liquid cooling
JP2000219479A (en) * 1999-02-01 2000-08-08 Central Glass Co Ltd Hanging accessory for glass plate
US6516634B1 (en) * 1999-02-12 2003-02-11 The Penn State Research Foundation Strengthening, crack arrest and multiple cracking in brittle materials using residual stresses
JP2006056610A (en) * 2004-08-17 2006-03-02 Kyokuhei Glass Kako Kk Holder for transferring glass substrate, and storage method in box for conveying glass substrate using the same
JP2007326584A (en) * 2006-06-06 2007-12-20 Asahi Glass Co Ltd Packing tool, packing container, packing material, glass substrate packing method, and packing material unpacking method
JP2008094402A (en) * 2006-10-06 2008-04-24 Asahi Glass Co Ltd Packing box, package, glass substrate packing method, and package unpacking method
JP2013100196A (en) * 2011-11-08 2013-05-23 Apple Inc Glass tempering apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112794651A (en) * 2021-01-11 2021-05-14 黄探花 Ion exchange tank for chemically toughened glass

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