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JP-7855165-B2 - Glass housing jig, glass housing, and method for manufacturing tempered glass

JP7855165B2JP 7855165 B2JP7855165 B2JP 7855165B2JP-7855165-B2

Inventors

  • 前田 和美

Assignees

  • 日本電気硝子株式会社

Dates

Publication Date
20260508
Application Date
20220713

Claims (17)

  1. A glass storage jig for housing glass articles, The glass article is provided with a support device that supports the end of the glass article, The support device comprises a wire that contacts the end of the glass article and a frame that holds the wire. The wire includes a first wire and a second wire spaced apart from the first wire in a predetermined direction. A glass housing jig characterized in that the first wire and the second wire are held in the frame such that they intersect at a predetermined intersection angle when viewed in the direction of separation.
  2. The glass housing jig according to claim 1, wherein the first wire and the second wire are arranged with a separation distance of 5 mm or more.
  3. The glass article includes a rectangular glass plate, The glass housing jig according to claim 1 or 2, wherein the length of the support side of the glass plate that contacts the wire is L, and the distance between the first wire and the second wire is D, such that D ≤ L/3.
  4. The first wire and the second wire are each held in place by the frame at multiple locations in a zigzag pattern. The glass housing jig according to claim 1 or 2, wherein the first wire and the second wire form a plurality of intersections when viewed in the direction of separation.
  5. The glass housing jig according to claim 1 or 2, wherein the intersection angle between the first wire and the second wire is 60° to 90°.
  6. The frame includes a holding portion for holding the first wire and/or the second wire, The glass housing jig according to claim 1 or 2, wherein the holding portion is configured to be repositionable so as to change the intersection angle between the first wire and the second wire.
  7. The first wire and the second wire are fixed to one of the frames. A glass housing jig according to claim 1 or 2, comprising a plurality of the support devices.
  8. The glass housing jig according to claim 7, wherein the frame comprises a first holding portion for holding the first wire and a second holding portion for holding the second wire.
  9. The frame includes a first frame that holds the first wire and a second frame that holds the second wire. A glass housing jig according to claim 1 or 2, comprising a plurality of the support devices.
  10. The glass article includes a rectangular glass plate, The glass housing jig according to claim 1 or 2, further comprising a plurality of support devices for supporting the ends relating to the four sides of the glass plate.
  11. The glass housing jig according to claim 1 or 2, wherein the wire includes a string-like body with a diameter of 0.3 mm or more, formed by twisting together multiple metal fibers.
  12. A glass container comprising a glass container according to claim 1 or 2, and a plurality of glass articles housed in the glass container, The glass container is characterized in that the glass article includes a rectangular glass plate.
  13. The glass container according to claim 12, wherein the thickness of the glass article is 5 to 100 μm.
  14. A method for producing tempered glass, characterized by comprising an ion exchange step of immersing the glass container described in claim 12 in an ion exchange molten salt to obtain the chemically strengthened glass article.
  15. The thickness of the glass article is 5 to 100 μm. The method for manufacturing tempered glass according to claim 14, wherein when the thickness of the glass article is t (μm) and the temperature of the ion exchange molten salt is T (°C), 350 ≤ T ≤ 330 + t × 2.
  16. The method for manufacturing tempered glass according to claim 14, further comprising a preheating step of preheating the glass container to a temperature of 300°C or higher before the ion exchange step.
  17. A method for manufacturing tempered glass according to claim 14, further comprising a liquid draining step after the ion exchange step, in which the glass container withdrawn from the ion exchange molten salt is held at a temperature above the melting point of the ion exchange molten salt for 10 minutes or less.

Description

This invention relates to a glass housing jig for housing glass articles, a glass housing comprising glass articles housed in the glass housing jig, and a method for manufacturing tempered glass. A conventional method for improving the mechanical strength of glass plates is called chemical strengthening. In this method, the glass plate is immersed in a chemical strengthening solution, exchanging ions between the glass surface and the solution. This generates compressive stress on the glass surface, thereby improving its mechanical strength. In this chemical strengthening process, a glass holding jig is used when immersing glass plates in a chemical strengthening solution contained in a chemical strengthening tank. For example, Patent Document 1 discloses a glass holding jig for holding multiple glass plates arranged vertically with spacing in the thickness direction. The glass holding jig comprises a pair of string-like bodies that support the ends of the glass plate. The pair of string-like bodies intersect at a predetermined angle, forming a V-shaped recess that supports the ends of the glass plate (see paragraph 0045 of the same document). When performing chemical strengthening treatment on glass plates using a glass holding jig, the glass holding jig containing the glass plates is immersed in the chemical strengthening solution in the chemical strengthening tank, and each glass plate is subjected to the chemical strengthening treatment. Subsequently, the glass housing jig is removed from the chemical strengthening solution, and the glass plate is held in the jig for a certain period of time to remove any chemical strengthening solution adhering to it. International Publication No. 2016/027594 This is a perspective view of a glass housing jig.This is a perspective view showing the support device for the glass housing jig.This is a front view showing the support device for the glass housing jig.This is a front view showing a part of the support device for the glass housing jig.This is a plan view showing a part of the support device for the glass housing jig.This is a cross-sectional view along the line of sight of the arrow VI-VI in Figure 4.This is a front view showing the intersection of the first wire and the second wire in the support device of the glass housing jig.This is a flowchart showing the manufacturing method of tempered glass.This is a cross-sectional view showing a manufacturing apparatus and method for tempered glass.This is a plan view of a glass storage jig according to another embodiment. The embodiments for carrying out the present invention will be described below with reference to the drawings. Figures 1 to 9 show one embodiment of the glass housing jig, glass housing, and method for manufacturing tempered glass according to the present invention. In this embodiment, the case in which a glass plate is subjected to chemical strengthening treatment as the glass article is described, but the form of the glass article is not limited to this embodiment. The glass plate according to this embodiment is rectangular, but is not limited to this shape. The size of the glass plate is, for example, 1000 mm x 1000 mm or larger, but is not limited to this range. Furthermore, the thickness of the glass plate is preferably 5 to 200 μm, more preferably 5 to 100 μm, but is not limited to this range. For the sake of explanation, in this embodiment, the thickness direction of the glass plate 2 in Figure 1 is defined as the front-to-back direction, with the front side of Figure 1 being the front and the back side being the rear. The vertical and horizontal directions refer to the vertical and horizontal directions of the glass plate 2. The glass housing jig 1 is constructed in a frame shape and has a space for housing multiple glass plates 2. The glass housing jig 1 comprises a column section 3, a beam section 4, girder sections 5a to 5c, and support devices 6a to 6d. The column sections 3 are positioned at the four corners of the glass housing jig 1, which is rectangular in plan view, and extend vertically. The beam sections 4 extend in the front-to-back direction between the column sections 3, connecting them. The girder sections 5a to 5c extend horizontally (parallel to the glass plates 2) between the column sections 3, connecting them. The girder sections 5a to 5c include a pair of lower girder sections 5a that connect the lower ends of the column section 3 in the vertical direction, a pair of upper girder sections 5b that connect the intermediate parts of the column section 3 in the vertical direction, and a pair of intermediate girder sections 5c that are positioned below the upper girder sections 5b. The pair of lower girder sections 5a, the pair of upper girder sections 5b, and the pair of intermediate girder sections 5c are each positioned at the same height in front of and behind the glass housing jig 1. The support devices 6a to 6d are for supporting each end of the four sides (bottom side 2a,