JP2023063083A - Pallet and glass package - Google Patents

Abstract

To provide a technique for suppressing the occurrence of scratches caused by the deflection of a glass plate when a thread-like spacer is used.SOLUTION: A pallet of the invention includes: a mounting base on which a glass laminate is mounted that alternately and repeatedly includes a glass plate containing a main surface and a thread-like spacer in contact with the main surface of the glass plate; and a supporting body that supports and turns the thread-like spacer outside the main surface of the glass plate when viewed from a Z-axis direction perpendicular to the main surface of the glass plate.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to pallets and glass packages.

From the viewpoint of transportation efficiency, the glass sheets are stacked and transported. If adjacent glass plates come into contact with each other, scratches will occur. Therefore, an interleaving paper is placed between the adjacent glass plates (see Patent Document 1, for example).

Patent Literature 2 discloses the use of filamentous spacers instead of interleaving paper as spacers interposed between glass plates. The thread spacers, unlike the interleaving paper, contact only a portion of the lower surface of the upper glass plate, rather than all of it.

JP 2017-186729 A Japanese Patent Application Laid-Open No. 2007-230610

The thread spacers contact only a portion of the lower surface of the upper glass plate, but not all of it. Therefore, the upper glass plate may bend due to its own weight and come into contact with the lower glass plate or pallet.

Conventionally, filamentous spacers are used for relatively thick glass plates, and the deflection of the glass plate is so small that it can be ignored.

One aspect of the present disclosure provides a technique for suppressing the occurrence of scratches due to bending of a glass plate when a thread-like spacer is used.

A pallet according to an aspect of the present disclosure includes a mounting table on which a glass laminate is placed, which alternately includes a glass plate including a main surface and a filamentous spacer in contact with the main surface of the glass plate, and the main surface of the glass plate. a support that supports and turns the thread-like spacer outside the main surface of the glass plate when viewed from the Z-axis direction perpendicular to the glass plate.

According to one aspect of the present disclosure, the support can suppress misalignment of the filamentous spacers on the main surface of the glass plate. As a result, the deflection of the glass plate can be kept constant, and the occurrence of scratches due to the deflection of the glass plate can be suppressed.

FIG. 1 is a side view showing a glass package according to one embodiment. FIG. 2 is a view of the glass package in FIG. 1 as seen from the Z-axis direction. FIG. 3 is a diagram showing a first modification of the column of FIG. 1; 4 is a diagram showing a second modification of the column of FIG. 1. FIG. FIG. 5 is a diagram showing a third modification of the column of FIG. 1; 6 is a diagram showing a fourth modification of the column of FIG. 1. FIG. FIG. 7 is a diagram showing a method for manufacturing a glass laminate according to one embodiment. 8A and 8B are diagrams showing a first modification of the manufacturing method of FIG. 9A and 9B are diagrams showing a second modification of the manufacturing method of FIG. 10A and 10B are diagrams showing an example of a ring-shaped concave portion, in which (A) is a diagram viewed from the X-axis direction, and (B) is a diagram viewed from the Z-axis direction. FIG. 11 is a diagram showing a first usage example of the ring-shaped recess. FIG. 12 is a diagram showing a second usage example of the ring-shaped recess. FIG. 13 is a diagram showing a third usage example of the ring-shaped recess. FIG. 14 is a diagram showing a fourth usage example of the ring-shaped recess. 15A and 15B are diagrams showing an example of a crescent-shaped concave portion, in which (A) is a diagram viewed from the X-axis direction, and (B) is a diagram viewed from the Z-axis direction. FIG. 16 is a diagram showing a first usage example of a crescent-shaped concave portion. FIG. 17 is a diagram showing a second usage example of the crescent-shaped concave portion. FIG. 18 is a diagram showing a third usage example of the crescent-shaped recess. FIG. 19 is a diagram showing a fourth usage example of the crescent-shaped concave portion. FIG. 20 is a diagram showing a fifth usage example of the crescent-shaped concave portion. FIG. 21 is a diagram showing a sixth usage example of the crescent-shaped concave portion. FIG. 22 is a diagram showing an example of the relationship between the length L, the interval D1, and the probability that the filamentous spacer will break. 23 is a diagram showing a modification of the glass package of FIG. 2. FIG. FIG. 24 is a diagram showing an example of a trapezoidal pillar when viewed from the X-axis direction. FIG. 25 is a diagram showing an example of an inverted trapezoidal pillar when viewed from the X-axis direction. FIG. 26 is a diagram showing an example of a pillar having a shape in which a part of a circle is placed on a trapezoid when viewed from the X-axis direction. FIG. 27 is a diagram showing an example of a wavy column viewed from the X-axis direction. FIG. 28 is a diagram showing an example of beams connecting adjacent columns.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In addition, in each drawing, the same reference numerals are given to the same or corresponding configurations, and explanations thereof may be omitted. In each drawing, the X-axis direction, the Y-axis direction, and the Z-axis direction are directions perpendicular to each other, and the X-axis direction and the Y-axis direction are directions parallel to the first main surface 211 of the glass plate 21, The Z-axis direction is a direction perpendicular to the first main surface 211 of the glass plate 21 . In FIGS. 1, 2, 7-9, 11-14, 16-21 and 23, a dot pattern is applied to the glass plate 21 to highlight the glass plate 21. FIG.

A glass package 1 according to one embodiment will be described with reference to FIGS. 1 and 2 . A glass package 1 includes a glass laminate 2 and a pallet 3 on which the glass laminate 2 is placed. The glass laminate 2 includes a plurality of glass plates 21 laminated in the Z-axis direction, thread-like spacers 22 arranged between the glass plates 21 adjacent in the Z-axis direction or between the glass plate 21 and the pallet 3, Prepare.

The glass laminate 2 includes glass plates 21 and thread-like spacers 22 alternately and repeatedly in the Z-axis direction. The glass plate 21 includes a first principal surface 211 and a second principal surface 212 . The first principal surface 211 is the bottom surface and the second principal surface 212 is the top surface. The thread-like spacers 22 contact the lower surface of the upper glass plate 21 and the upper surface of the lower glass plate 21 or the pallet 3 to limit the contact between the upper glass plate 21 and the lower glass plate 21 or the pallet 3 .

The glass plate 21 has, for example, a rectangular shape when viewed from the Z-axis direction. A rectangle may include a square. A rectangle may include a shape with chamfered corners. When viewed from the Z-axis direction, the glass plate 21 has a first side 213 and a second side 214 parallel to each other, and a third side 215 and a fourth side 216 parallel to each other.

When viewed from the Z-axis direction, the direction along the first side 213 and the second side 214 is the X-axis direction. Also, when viewed from the Z-axis direction, the direction along the third side 215 and the fourth side 216 is the Y-axis direction.

The plurality of glass plates 21 included in the glass laminate 2 have, for example, the same shape and the same dimensions. The number of glass plates 21 included in the glass laminate 2 is not particularly limited, but is, for example, 50 or more and 800 or less, preferably 120 or more and 600 or less, more preferably 140 or more and 250 or less. be.

The glass plate 21 is for a display, for example, and more specifically, it is a substrate on which a TFT (Thin Film Transistor), a color filter, or the like is formed, or a cover glass. The glass plate 21 may be a semiconductor wafer, such as a silicon wafer, or a carrier substrate bonded with a semiconductor chip.

The carrier substrate is, for example, bonded to the semiconductor wafer before the semiconductor wafer is thinned and reinforces the semiconductor wafer during the thinning of the semiconductor wafer. After thinning the semiconductor wafer, the semiconductor wafer and carrier substrate are separated.

Alternatively, the carrier substrate may be bonded to the plurality of semiconductor chips to position the plurality of semiconductor chips before sealing the plurality of semiconductor chips with resin. After sealing the plurality of semiconductor chips with resin, the plurality of semiconductor chips and the carrier substrate are separated.

Since the glass plate 21 for display or carrier substrate is required to have few defects, the application of the technology of the present disclosure is significant.

The Young's modulus of the glass plate 21 is, for example, 60 GPa or more and 110 GPa or less, preferably 65 GPa or more and 95 GPa or less, more preferably 70 GPa or more and 90 GPa or less.

The density of the glass plate 21 is, for example, 2.2 g/cm ³ or more and 3.0 g/cm ³ or less, preferably 2.3 g/cm ³ or more and 2.8 g/cm ³ or less, more preferably 2.4 g/cm 3 or more. ³ or more and 2.7 g/cm ³ or less.

The thickness of the glass plate 21 is, for example, 2.0 mm or less, preferably 1.2 mm or less, and more preferably 0.6 mm or less. Also, the thickness of the glass plate 21 is preferably 0.05 mm or more, more preferably 0.1 mm or more, and still more preferably 0.3 mm or more.

The dimension of the glass plate 21 in the X-axis direction is, for example, 100 mm or more and 4000 mm or less, preferably 300 mm or more and 3300 mm or less, more preferably 1500 mm or more and 3300 mm or less, and still more preferably 1800 mm or more and 3300 mm or less.

The thread-like spacers 22 are arranged between the glass plates 21 adjacent to each other in the Z-axis direction, and suppress the occurrence of scratches between the glass plates 21 . In addition, the thread-like spacers 22 are arranged between the glass plate 21 and the pallet 3 that are adjacent to each other in the Z-axis direction, and suppress the occurrence of scratches on the glass plate 21 and the pallet 3 .

The filamentous spacer 22 has a linear portion 221 in contact with the first main surface 211 of the glass plate 21 . Each straight portion 221 crosses the first major surface 211 . Each straight portion 221 passes through the third side 215 and the fourth side 216, for example. Each linear portion 221 extends, for example, in the X-axis direction. Note that each linear portion 221 may extend obliquely with respect to the X-axis direction, as will be described later. In any case, a plurality of linear portions 221 are provided at intervals in the Y-axis direction.

Unlike interleaving paper, the thread-like spacers 22 contact only a part of the first main surface 211 of the glass plate 21 instead of the entire surface. Therefore, adhesion of foreign matter to the glass plate 21 can be suppressed, and the quality of the glass plate 21 can be improved. Since the glass plate 21 for display or carrier substrate is required to have a high degree of cleanliness, the filamentous spacers 22 are suitable.

In addition, unlike interleaving paper, the filamentous spacers 22 can be collected and reused after use. Therefore, resources can be saved. The filamentous spacers 22 may be washed before reuse. Foreign matter adhering to the thread-like spacers 22 can be removed by washing.

The thickness of the filamentous spacers 22 is appropriately determined in consideration of the deflection of the glass plate 21, and is, for example, 50 μm or more and 2000 μm or less, preferably 100 μm or more and 1500 μm or less, more preferably 200 μm or more and 1000 μm or less, further preferably 300 μm or more. 800 μm or less. The thicker the thread-like spacers 22, the less likely they are to come into contact with each other when the glass plates 21 are bent, and the thinner the thread-like spacers 22, the more glass plates 21 can be loaded at once, resulting in good loading efficiency.

The cross-sectional shape of the thread-like spacer 22 may be circular or rectangular. When the cross-sectional shape of the filamentous spacers 22 is rectangular, the glass plate 21 can be supported more stably than when the cross-sectional shape is circular. When the cross-sectional shape of the filamentous spacers 22 is circular, the contact area with the glass plate 21 is smaller than when the cross-sectional shape is rectangular, and adhesion of foreign matter to the glass plate 21 can be further suppressed.

The material of the filamentous spacers 22 is not particularly limited, but may be, for example, natural fibers or synthetic fibers. Specific examples of natural fibers include cotton, linen, silk, and wool. Specific examples of synthetic fibers include rayon, cupra, acetate fiber, polyethylene (PE) fiber, nylon fiber, polyester fiber, polyamide fiber, polyimide fiber, acrylic fiber, polyarylate fiber, polyparaphenylenebenzobisoxazole (PBO). fibers, polybenzimidazole (PBI) fibers, polyphenylene sulfide (PPS) fibers, fluorine fibers and carbon fibers. The thread-like spacer 22 may be a monofilament, a multifilament, or a twisted thread obtained by twisting a plurality of threads. Moreover, the thread|yarn which combined multiple types among the said fiber may be sufficient.

The pallet 3 is, for example, a vertical pallet that obliquely supports each glass plate 21 . The pallet 3 is a vertical pallet in this embodiment, but may be a flat pallet. The flat pallet horizontally supports each glass plate 21 .

The pallet 3 includes a mounting table 31 on which the glass laminate 2 is placed. The mounting table 31 has a mounting surface 311 facing the first main surface 211 of the glass plate 21 . The mounting surface 311 is provided obliquely, for example. In addition, when the pallet 3 is a flat pallet, the mounting surface 311 is provided horizontally. The pallet 3 may include a stopper plate 32 with which the obliquely downward end face of the glass plate 21 abuts. The stopper plate 32 abuts on the first side 213 of the glass plate 21, for example. The position of the glass plate 21 can be easily determined by the stopper plate 32 . In addition, when the pallet 3 is a flat pallet, the stopper plate 32 may not be provided.

When the pallet 3 is a flat pallet, the mounting surface 311 may be concavely curved along one side. That is, the height of the placement surface 311 may be lower at the center position of the one side than at both end positions of the one side. In this way, by curving the mounting surface 311 in a concave shape, it is possible to suppress lateral displacement of the glass plate 21 mounted on the mounting surface 311 during transportation.

The pallet 3 may include a pedestal 33 that supports the mounting table 31 and the stopper plate 32 . A mounting table 31 and a stopper plate 32 are fixed on the pedestal 33 .

The pallet 3 includes posts 34 that support and redirect the thread-like spacers 22 outside the first main surface 211 of the glass plate 21 when viewed in the Z-axis direction. In this embodiment, the column 34 corresponds to the support described in the claims. The pillar 34 is provided perpendicular to the mounting surface 311 of the mounting table 31 . In addition, the pillar 34 may be provided obliquely with respect to the mounting surface 311, or may be bent in the middle.

Although not shown, the outer peripheral surface 341 or the top surface 342 of the pillar 34 may be provided with irregularities, holes, or the like. The shape of the unevenness is not particularly limited. The outer peripheral surface 341 or the top surface 342 of the post 34 may be provided with claws, spheres, discs, branches, or the like.

The thread-like spacer 22 is wound around the outer peripheral surface 341 of the post 34 and turned along the outer peripheral surface 341 . The thread-like spacers 22 can be constrained by the posts 34, and displacement of the thread-like spacers 22 can be suppressed. As a result, the deflection of the glass plate 21 can be kept constant, and the occurrence of scratches due to the deflection of the glass plate 21 can be suppressed.

The pillar 34 not only suppresses the positional deviation of the thread-like spacer 22 but also the positional deviation of the glass plate 21 . Furthermore, the pillars 34 also suppress relative positional displacement between the glass plate 21 and the thread-like spacers 22 . Therefore, friction between the glass plate 21 and the filamentous spacer 22 can be suppressed, and electrification due to friction can be suppressed.

The pillars 34 support the thread-like spacers 22 so that the thread-like spacers 22 attached to the glass plates 21 are not lifted together with the glass plates 21 when the glass plates 21 are lifted one by one to unpack the glass laminate 2 . You can also hold it. The glass plate 21 and the thread-like spacers 22 can be separated, and the glass plate 21 and the thread-like spacers 22 can be recovered separately.

When viewed from the Z-axis direction, the filamentous spacer 22 has a folded portion 222 at one end or both ends in the X-axis direction. The folded portion 222 is a portion whose direction is changed by the outer peripheral surface 341 of the column 34 . When viewed from the Z-axis direction, the column 34 has, for example, a semicircular shape, and the folded portion 222 has a semicircular arc shape.

When viewed from the Z-axis direction, the thread-like spacer 22 has, for example, a ring-like portion 223 composed of two straight portions 221 and two folded portions 222 . The ring-shaped portion 223 is in contact with the lower surface of the upper glass plate 21 and the upper surface of the lower glass plate 21 or the mounting table 31 to limit the contact between the upper glass plate 21 and the lower glass plate 21 or the mounting table 31. do. The thread-like spacer 22 has a plurality of ring-like portions 223 spaced apart in the Z-axis direction.

Although not shown, the thread-like spacer 22 may have a zigzag-shaped portion composed of three or more linear portions 221 and two or more folded portions 222 when viewed from the Z-axis direction. Similarly to the ring-shaped portion 223, the zigzag portion also contacts the lower surface of the upper glass plate 21 and the upper surface of the lower glass plate 21 or the mounting table 31, thereby Limit contact with the table 31.

When viewed from the Z-axis direction, a plurality of straight portions 221 are provided at intervals in a desired direction (for example, the Y-axis direction), and the plurality of straight portions 221 are provided parallel to each other. According to the present embodiment, the pillars 34 can keep the interval D1 between the center lines of the adjacent linear portions 221 constant. As a result, the deflection of the glass plate 21 can be kept constant, and the occurrence of scratches due to the deflection of the glass plate 21 can be suppressed.

The intervals D1 are regular intervals in this embodiment, but may be irregular intervals. The average value of the distance D1 is, for example, 10 mm or more and 100 mm or less, preferably 20 mm or more and 80 mm or less, and more preferably 40 mm or more and 50 mm or less. When the average value of the interval D1 is 100 mm or less, the number of straight portions 221 is large, the load applied to the straight portions 221 is dispersed, and the probability of the thread-like spacer 22 breaking is low. When the average value of the interval D1 is 10 mm or more, the number of the straight portions 221 is small and the number of the pillars 34 is small.

A plurality of columns 34 are provided at intervals along each of the third side 215 and the fourth side 216 of the glass plate 21 when viewed from the Z-axis direction. The pillars 34 are arranged so as not to interfere with the stopper plate 32 , and the thread-like spacers 22 can be stretched across the first main surface 211 of the glass plate 21 from pillar 34 to pillar 34 .

In addition, as shown in FIG. 23 , a plurality of columns 34 may be provided at intervals along each of the first side 213 and the second side 214 of the glass plate 21 when viewed from the Z-axis direction. In this case, a plurality of stopper plates 32 are provided at intervals along the first side 213 of the glass plate 21 . A pillar 34 is arranged between adjacent stopper plates 32 . The number and arrangement of the stopper plates 32 are not limited to those shown in FIG.

A plurality of pillars 34 are provided at intervals along a desired direction (eg, Y-axis direction). Thereby, the distance D1 between the center lines of the linear portions 221 adjacent to each other in the Y-axis direction can be kept constant. Although the plurality of pillars 34 are arranged in a row along the Y-axis direction in this embodiment, they may be arranged in a staggered manner along the Y-axis direction.

The maximum value of the interval D2 between the columns 34 adjacent to each other in the Y-axis direction is, for example, 10 mm or more and 200 mm or less. The interval D2 is measured along the Y-axis direction. If the maximum value of the interval D2 between the columns 34 adjacent in the Y-axis direction is 10 mm to 200 mm, the maximum value of the interval D1 between the center lines of the linear portions 221 adjacent in the Y-axis direction is 10 mm to 200 mm.

When the maximum value of the interval D2 between the columns 34 adjacent to each other in the Y-axis direction is 200 mm or less, the number of straight portions 221 is large, the load applied to the straight portions 221 is distributed, and the probability of the thread spacers 22 breaking is low. When the maximum value of the interval D2 is 10 mm or more, the number of the straight portions 221 is small and the number of the pillars 34 is small.

The column 34 is fixed to the mounting table 31 but may be detachable from the mounting table 31 . The column 34 is fastened to the mounting table 31 with, for example, magnets or bolts. The pillar 34 and the mounting table 31 may be fitted with a convex portion and a concave portion. The protrusion may be provided on the pillar 34 and the recess may be provided on the mounting table 31 , or the protrusion may be provided on the mounting table 31 and the recess may be provided on the pillar 34 . The column 34 may be fixed to the mounting table 31 via an angle bracket or the like.

If the column 34 is detachable, the following effects (1) to (3) can be obtained. (1) Interleaving paper can be used in place of the thread-like spacers 22 by removing the pillars 34 . (2) The type (including size and shape) or mounting position of the pillar 34 can be changed. (3) When the pillar 34 is damaged, the pillar 34 can be replaced.

The filamentous spacer 22 has the linear portion 221 in contact with the first main surface 211 of the glass plate 21 as described above. The straight portion 221 crosses the first main surface 211 of the glass plate 21 and extends to the pillar 34 . When viewed from the Z-axis direction, the length L of the straight portion 221 from the glass plate 21 to the nearest pillar 34 is, for example, 15 mm or more and 300 mm or less. Length L is measured along straight portion 221 .

If the length L is 15 mm or more, the probability that the filamentous spacers 22 will break due to vibration during transportation is low. When the glass plate 21 is displaced with respect to the column 34 due to vibration during transportation, the length L varies. As the length L increases, a new tensile stress is created. The new tensile stress is proportional to the amount of elongation relative to the original length. If the length L is 15 mm or more, since the original length is long, the newly generated tensile stress is small, and the probability that the filamentous spacer 22 will break is low. The length L is preferably 20 mm or more, more preferably 50 mm or more.

If the length L is 300 mm or less, the wasted space between the glass plate 21 and the column 34 is small. Therefore, the difference in area between the mounting surface 311 of the mounting table 31 and the first main surface 211 of the glass plate 21 is small, and the mounting table 31 can be small. The length L is preferably 200 mm or less, more preferably 150 mm or less, even more preferably 100 mm or less.

An example of the relationship between the length L, the interval D1, and the probability that the filamentous spacer 22 will break will be described with reference to FIG. FIG. 22 shows the results of a vibration test of the glass package 1 placed on a compact vibration tester for transportation test (manufactured by IMV: m120/MA1). The glass package 1 is produced by alternately stacking thread-like spacers 22 and glass plates 21 on a mounting table 31, as shown in FIGS. bottom. The glass package 1 was produced under the same conditions except for D1 and L. The number of glass plates 21 included in each glass package 1 was 14. On each glass package 1, 160 glass plates were placed as weights. Each glass plate had an X-axis dimension of 470 mm, a Y-axis dimension of 370 mm, and a Z-axis dimension (thickness) of 0.5 mm. Two types of vibration tests were performed. In one vibration test, a method conforming to Japanese Industrial Standards JIS Z 0232: 2020 (PSD: general road transportation described in Annex A, acceleration effective value 5.9 m / s ² (rms), 30 minutes) Random vibration was applied in the Z-axis direction. In another vibration test, periodic vibration was applied in the Y-axis direction periodically (frequency of 5 Hz, amplitude of 20 mm, acceleration of 10 m/s ² , 30 minutes). Random vibration is vibration assuming an actual transportation environment, and periodic vibration is vibration assuming an environment that is more severe than the actual environment (environment where the thread-like spacer 22 is easier to break than the actual environment).

In FIG. 22, the probability of breakage of the thread-like spacers 22 is the ratio of the total number of intersections at which the thread-like spacers 22 were cut by the vibration test to the total number of intersections of the peripheral edges of the thread-like spacers 22 and the glass plates 21 . It can be seen from FIG. 22 that the longer the length L, the lower the probability that the thread-like spacer 22 will break. Also, it can be seen that the shorter the interval D1, the lower the probability that the thread-like spacer 22 will break.

The tensile strength of the pillars 34 is obtained by measurement according to ISO527-1, 2, and is, for example, 5 N/mm ² or more. If the tensile strength of the pillars 34 is 5 N/mm ² or more, the inclination of the pillars 34 due to the tension of the thread-like spacers 22 is small. Pillars 34 are made of, for example, polyvinyl chloride, polyethylene, polypropylene, polyester, acrylic, polystyrene, ABS (acrylonitrile-butadiene-styrene copolymer), polyethylene terephthalate, polybutylene terephthalate, polycarbonate, urethane, polyphenylene ether, polyphenylene sulphate. Fido, polysulfone, polyetherimide, polyamideimide, aliphatic polyamide, aromatic polyamide, polyacetal, high molecular weight polyethylene, PTFE (polytetrafluoroethylene), PEEK (polyetheretherketone), PVDF (polyvinylidene fluoride), PFA ( tetrafluoroethylene-perfluoroether), NBR (acrylonitrile-butadiene rubber), EPDM (ethylene-propylene diene rubber), wood, silicone, silicon carbide, quartz, glass, silicon nitride, aluminum nitride, carbon steel, aluminum, copper, One or more from the group consisting of zinc, brass, titanium, magnesium, nickel, stainless steel, zirconia, tungsten, silver, gold, platinum, and palladium.

The material of the outer peripheral surface 341 of the column 34 is resin, for example. Compared to metal, resin has better slidability for the thread-like spacers 22 and has a lower probability of breaking the thread-like spacers 22 . The Mohs hardness of the resin is, for example, 4 or less. Resin, unlike metal, does not dust and rust. In addition, the pillar 34 may contain the resin in the outer peripheral surface 341 in contact with the thread-like spacer 22, and may not contain the resin inside.

The surface roughness Ra of the outer peripheral surface 341 of the pillar 34 is, for example, 10 nm or less. Surface roughness Ra is arithmetic mean roughness Ra described in JIS B 0601:2013. If the surface roughness Ra is 10 nm or less, the slidability of the thread-like spacers 22 is good, and the probability of breaking the thread-like spacers 22 is low.

Next, the shape of the outer peripheral surface 341 of the column 34 when viewed from the Z-axis direction will be described with reference to FIGS. 2, 3 and 4. FIG. In this embodiment, the shape of the outer peripheral surface 341 of the column 34 when viewed from the Z-axis direction is a semicircle as shown in FIG. 4), circular, oval, fan-shaped or teardrop-shaped. A circular shape is easy to obtain or manufacture, and a shape obtained by cutting a circular shape such as a semicircular shape and a shape obtained by crushing a circular shape such as an elliptical shape can reduce the installation space of the column 34 . The post 34 may be hollow and cylindrical when viewed from the Z-axis direction.

When viewed from the Z-axis direction, the outer peripheral surface 341 of the column 34 preferably bends the filamentous spacer 22 into a polygonal line or curve of 120° or more. That is, when viewed from the Z-axis direction, the outer peripheral surface 341 of the column 34 preferably does not have an internal angle θ1 of less than 120° at the portion where the filamentous spacer 22 contacts. This is because if there is an angle with an internal angle θ1 of less than 120°, the thread-like spacer 22 is likely to break at that angle. It should be noted that the outer peripheral surface 341 of the column 34 may have an internal angle θ2 of less than 120° at a portion with which the thread-like spacer 22 does not come into contact.

When viewed from the Z-axis direction, it is preferable that the outer peripheral surface 341 of the column 34 does not have an internal angle θ3 of less than 120° at the portion where the thread-like spacer 22 is separated. For example, as shown in FIG. 3, when viewed from the Z-axis direction, the outer peripheral surface 341 of the post 34 may have a fillet 343 with rounded corners at a portion where the thread-like spacer 22 is separated. This is because if there is an angle with an internal angle θ3 of less than 120°, the thread-like spacer 22 is likely to break at that angle.

When viewed from the X-axis direction (the Y-axis direction in the case of FIG. 23), the shape of the outer peripheral surface 341 of the column 34 is a rectangle parallel to the Z-axis in this embodiment as shown in FIG. It may be a trapezoid (see FIGS. 24 and 25), a trapezoid with a part of a circle on top of it (see FIG. 26), a waveform (see FIG. 27), or a fan shape, and is not particularly limited. The trapezoid may be thicker from the bottom to the top as shown in FIG. 24, or may be thinner from the bottom to the top as shown in FIG. The corrugations may form a plurality of constrictions spaced along the Z axis as shown in FIG.

If the transportation time is long and the vibration time is long, it is preferable that the shape of the outer peripheral surface 341 of the column 34 is rectangular when viewed from the X-axis direction (the Y-axis direction in the case of FIG. 23). The thread-like spacer 22 present under the Nth (N is an integer equal to or greater than 1) glass plate 21 from the top and the thread-like spacer 22 present under the (N+1)th glass plate 21 from the top are arranged in the Y-axis direction. (X-axis direction in the case of FIG. 23) can be arranged at the same position. As a result, the weight of the Nth glass plate 21 from the top does not cause bending moment to the (N+1)th glass plate 21 from the top. Therefore, bending of the glass plate 21 can be suppressed, and contact between the glass plates 21 can be prevented.

If the transportation time is short and the vibration time is short, it is preferable that the shape of the outer peripheral surface 341 of the column 34 is trapezoidal or wavy when viewed from the X-axis direction (the Y-axis direction in the case of FIG. 23). The thread-like spacer 22 present under the Nth (N is an integer equal to or greater than 1) glass plate 21 from the top and the thread-like spacer 22 present under the (N+1)th glass plate 21 from the top are arranged in the Y-axis direction. (in the case of FIG. 23, the X-axis direction). As a result, the weight of the Nth glass plate 21 from the top causes a bending moment in the (N+1)th glass plate 21 from the top. When the (N+1)th glass plate 21 from the top is bent, the position of the thread-like spacer 22 thereon is displaced downward, and the thickness of the glass laminate 2 is reduced. Therefore, the number of laminated glass plates 21 can be increased.

Adjacent pillars 34 may be connected by beams 35 (see FIG. 28). The beam 35 suppresses deformation of the column 34 . Therefore, the pillars 34 can be thinned, and the weight of the pallet 3 can be reduced.

Next, with reference to FIGS. 2, 5 and 6, folding back of the thread-like spacer 22 will be described. Each folded portion 222 connects two linear portions 221 adjacent to each other in the Y-axis direction. Each folded portion 222 is supported by one pillar 34 as shown in FIG. 2 in this embodiment, but may be supported by two pillars 34 as shown in FIG. It may be supported by three or more (for example, four) pillars 34 as shown in FIG. Although not shown, there may be columns that do not support the thread-like spacers 22 .

Next, with reference to Drawing 7, a manufacturing method of glass layered product 2 concerning one embodiment is explained. Each filamentous spacer 22 has a plurality of ring-shaped portions 223 composed of two straight portions 221 and two folded portions 222 spaced apart in the Z-axis direction. The glass laminate 2 is obtained by alternately repeating the formation of the ring-shaped portion 223 and the placement of the glass plate 21 on the mounting table 31 . Each folded portion 222 is supported by one pillar 34 in this embodiment, but may be supported by a plurality of pillars 34 as shown in FIGS.

Next, a first modification of the manufacturing method of FIG. 7 will be described with reference to FIG. Each filamentous spacer 22 has a linear portion 221A in contact with the lower surface of the odd-numbered glass plate 21A from the bottom, a linear portion 221B in contact with the lower surface of the even-numbered glass plate 21B from the bottom, and two linear portions 221A and 221B. It has a folded portion 222 that connects the .

As shown in FIG. 8, when viewed from the Z-axis direction, the two linear portions 221A and 221B are provided parallel to each other with a gap in the Y-axis direction. In addition, as shown in FIG. 9, the two linear portions 221A and 221B may be provided so as to obliquely intersect when viewed from the Z-axis direction. Each thread-like spacer 22 has a plurality of sets of two linear portions 221A and 221B spaced apart in the Z-axis direction.

In this modification, the formation of the straight portion 221A, the placement of the glass plate 21A, the formation of the straight portion 221B, and the placement of the glass plate 21B are repeatedly performed in this order on the mounting table 31. , a glass laminate 2 is obtained. Each folded portion 222 is supported by one pillar 34 in this modified example, but may be supported by a plurality of pillars 34 as shown in FIGS.

Next, an example of the recess 344 will be described with reference to FIG. 10 . The post 34 may have a recess 344 on its outer peripheral surface 341 . By winding the folded portion 222 of the thread-like spacer 22 around the concave portion 344, the positional deviation of the thread-like spacer 22 in the Z-axis direction can be suppressed. The pillar 34 may have a plurality of recesses 344 spaced apart in the Z-axis direction.

The pillar 34 includes, for example, a first disk portion 345 and a second disk portion 346 that are alternately repeated in the Z-axis direction. When viewed from the Z-axis direction, the center of the first disc portion 345 and the center of the second disc portion 346 are aligned. The diameter of the second disc portion 346 is smaller than the diameter of the first disc portion 345 . In this case, the shape of the concave portion 344 when viewed from the Z direction is ring-shaped. The recessed portion 344 is formed on the entire outer circumference of the second disk portion 346 .

A distance D3 between the recesses 344 is equal to the thickness of the second disc portion 346 . The interval D3 between the recesses 344 is appropriately set according to the manufacturing method of the glass laminate 2 . When obtaining the glass laminate 2 by the manufacturing method shown in FIG. equal. When obtaining the glass laminate 2 by the manufacturing method shown in FIGS. is equal to the sum of two times

Next, a usage example of the ring-shaped concave portion 344 will be described with reference to FIGS. 11 to 14. FIG. Each folded portion 222 may connect two straight portions 221, 221 in contact with the lower surface of the same glass plate 21 as shown in FIGS. 11 and 12, or different glass plates as shown in FIGS. Two straight portions 221A and 221B contacting the lower surfaces of 21A and 21B may be connected.

Each folded portion 222 may be supported by one pillar 34 as shown in FIGS. 11 and 13, or may be supported by multiple pillars 34 as shown in FIGS.

Next, another example of the recess 344 will be described with reference to FIG. 15 . The shape of the recess 344 when viewed from the Z-axis direction may be a crescent shape. For example, when viewed from the Z-axis direction, the center of the first disc portion 345 and the center of the second disc portion 346 are eccentric in the Y-axis direction. The diameter of the second disc portion 346 is the same as the diameter of the first disc portion 345 . In this case, the column 34 alternately has recesses 344 formed on one side in the Y-axis direction and recesses 344 formed on the opposite side in the Y-axis direction along the Z-axis direction. The concave portion 344 is formed in a portion of the outer circumference of the first disk portion 345 and a portion of the outer circumference of the second disk portion 346 .

Next, with reference to FIGS. 16 to 21, usage examples of the crescent-shaped concave portion 344 will be described. Each folded portion 222 may connect two straight portions 221, 221 in contact with the lower surface of the same glass plate 21 as shown in FIGS. Two straight portions 221A and 221B contacting the lower surfaces of 21A and 21B may be connected.

Each folded portion 222 may be supported by one post 34 as shown in FIGS. 16 and 19, or by multiple posts 34 as shown in FIGS. 17, 18, 20 and 21. may be As shown in FIGS. 17 and 20, the plurality of pillars 34 may have the first disk portion and the second disk portion eccentric in the same direction in the same Z-axis direction, or as shown in FIGS. Alternatively, the first disk portion and the second disk portion may be eccentric in opposite directions at the same Z-axis position.

Although the pallet and the glass package according to the present disclosure have been described above, the present disclosure is not limited to the above embodiments. Various changes, modifications, substitutions, additions, deletions, and combinations are possible within the scope of the claims. These also naturally belong to the technical scope of the present disclosure.

1 glass package 2 glass laminate 21 glass plate 211 first main surface 22 filamentous spacer 3 pallet 31 mounting table 34 pillar

Claims (16)

a mounting table on which a glass laminate is placed, which alternately and repeatedly comprises a glass plate including a main surface and filamentous spacers in contact with the main surface of the glass plate;
a support that supports and changes direction of the thread-like spacer outside the main surface of the glass plate when viewed from the Z-axis direction perpendicular to the main surface of the glass plate;
A palette. The filamentous spacer has a linear portion in contact with the main surface of the glass plate,
When viewed from the Z-axis direction, the straight portion crosses the main surface of the glass plate and extends to the support,
2. The pallet according to claim 1, wherein a plurality of said straight portions are provided at intervals in a desired direction when viewed from said Z-axis direction, and said plurality of said straight portions are provided parallel to each other. 3. The pallet according to claim 2, wherein when viewed from the Z-axis direction, an average value of intervals between center lines of adjacent linear portions is 100 mm or less. 4. The pallet according to claim 2 or 3, wherein a length of said straight portion from said glass plate to said nearest support is 15 mm or more and 300 mm or less. The pallet according to any one of claims 1 to 4, wherein said support is detachable with respect to said mounting table. When viewed from the Z-axis direction, the glass plate has a rectangular shape and has a first side and a second side parallel to each other and a third side and a fourth side parallel to each other,
A plurality of the supports are provided at intervals along each of the first side and the second side, or a plurality of supports are provided at intervals along each of the third side and the fourth side. A pallet according to any one of claims 1-5. A stopper plate with which the obliquely downward end surface of the glass plate abuts,
7. The pallet according to claim 6, wherein said stopper plate abuts said first side, and said support members are provided in plurality along each of said third side and said fourth side at intervals. A stopper plate with which the obliquely downward end surface of the glass plate abuts,
7. The pallet according to claim 6, wherein said stopper plate abuts said first side, and said support members are provided in plurality along each of said first side and said second side at intervals. 7. The pallet according to claim 6, wherein said mounting table is provided horizontally. The mounting table is provided horizontally,
A stopper plate with which one end surface of the glass plate abuts,
7. The pallet according to claim 6, wherein said stopper plate abuts said first side, and said support members are provided in plurality along each of said third side and said fourth side at intervals. 11. The pallet according to any one of claims 1 to 10, wherein the support has an outer peripheral surface that bends the thread-like spacers into a polygonal line or curved line of 120° or more when viewed from the Z-axis direction. The pallet according to any one of claims 1 to 11, wherein the support has a tensile strength of 5 N/mm ² or more, as measured according to ISO 527-1, 2. The pallet according to any one of claims 1 to 12, wherein the material of the surface of said support is resin. The pallet according to any one of claims 1 to 13, wherein said support has a surface roughness Ra of 10 nm or less. A pallet according to any one of claims 1 to 14, wherein said support has a recess on its outer peripheral surface. A glass package comprising the pallet according to any one of claims 1 to 15 and the glass laminate.

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