WO2018034025A1

WO2018034025A1 - Pallet for glass plate and glass plate package

Info

Publication number: WO2018034025A1
Application number: PCT/JP2017/017284
Authority: WO
Inventors: 保弘松本
Original assignee: 日本電気硝子株式会社
Priority date: 2016-08-16
Filing date: 2017-05-02
Publication date: 2018-02-22
Also published as: JPWO2018034180A1; CN109562889B; CN109562889A; TW201811631A; JP6711403B2; TWI734822B

Abstract

A glass plate package 1, in which a laminate 5 obtained by alternately stacking glass plates 3 and protective sheets 4 is supported by a pallet 2. The pallet 2 is provided with a base part 6, which comprises a lattice-shaped skeleton in which a plurality of holes are formed, and a lower surface support part 11, which is provided on the upper surface of the base part 6 and which supports the lower surface of the laminate 5. The lower surface support part 11 has a laminated structure including: a rigid plate 12, which is provided on the upper surface of the base part 6 so as to block the holes and which is divided into a plurality of small plates in the planar direction; a first cushioning plate 14 provided on the upper surface of the rigid plate 12, and a second cushioning plate 15 provided on the upper surface of the first cushioning plate 14.

Description

Glass plate pallet and glass plate package

The present invention relates to a glass plate pallet and a glass plate package using the same.

As is well known, as represented by glass substrates for flat panel displays (FPD) such as liquid crystal displays, plasma displays, organic EL displays, and cover glasses for organic EL lighting, plate glass used in various fields is In recent years, there has been a demand for an increase in size and thickness. Therefore, the glass plate is easily damaged, and the packaging form of the glass plate at the time of storage or transportation is extremely important.

As a packaging form of this type of glass plate, one in which a plurality of glass plates are stacked in a flat state on a base part of a pallet and packaged in a laminated state is known (for example, Patent Documents 1 and 2). See). In this packing form, since the weight of the glass plate is mainly supported by the plane of the glass plate, there is an advantage that unnecessary stress is less likely to be concentrated on the side of the glass plate that is easily damaged. Therefore, it can be said that it is one of the effective packaging forms of the glass plate corresponding to the demand for enlargement and thinning.

Here, the base part of the pallet is made of a lattice-like frame made of a metal such as an aluminum alloy from the viewpoint of weight reduction, etc., and a plurality of holes are also formed in the part corresponding to the region where the laminate is placed. Has been. Moreover, it is common that a single buffer plate is laid on the upper surface of the base so as to close the hole (see, for example, FIG. 4 of Patent Document 2). In this case, the buffer plate serves as a lower surface support portion that supports the lower surface of the laminate.

JP 2010-143599 A JP 2010-168046 A

However, if the plurality of holes in the base part are closed with only one large buffer plate, the following problems may occur as the glass plate becomes larger and thinner.

First, as the glass plate increases in size, the load supported by the buffer plate increases, making it difficult to secure sufficient rigidity with the buffer plate alone, and the buffer plate bends at a position corresponding to the hole in the base. It may be necessary. In this case, since the glass plate itself is easily deformed as the thickness is reduced, the glass plate included in the laminate may be deformed following the bending of the buffer plate. In particular, the deformation of the glass plate tends to be large at the lower part of the laminate, which can cause the glass plate to break.

Second, since the buffer plate is a continuous plate material, if vibration is applied to a part of the buffer plate due to an impact from below, the vibration tends to propagate to the entire buffer plate. As a result, the glass plate included in the laminate may be displaced or the glass plate may be damaged. Here, it is conceivable to use a buffer plate having high vibration absorption performance, but such a buffer plate generally has low rigidity. Therefore, even if the problem of vibration can be solved, the above problem of bending becomes larger.

This invention makes it the technical subject to make it hard to propagate the vibration added to a lower surface support part to the glass plate contained in a laminated body, ensuring the rigidity of the lower surface support part which supports the lower surface of a laminated body.

The pallet for glass plates according to the present invention, which was created to solve the above-mentioned problems, is for packing a laminate formed by flatly laminating a plurality of glass plates, and has a plurality of holes formed therein. A base portion made of a lattice-shaped frame and a lower surface support portion provided on the upper surface of the base portion to support the lower surface of the laminate, and the lower surface support portion is formed on the upper surface of the base portion so as to close the hole. It has a laminated structure including a rigid plate laid and a buffer plate laid on the upper surface of the rigid plate, and the rigid plate is divided into a plurality of small plates in the planar direction.

According to such a configuration, the lower surface support portion that supports the lower surface of the laminated body has a laminated structure in which the buffer plate is reinforced with the rigid plate, so that the rigidity of the lower surface support portion is increased. In addition, since the rigid plate is divided into a plurality of small plates in the plane direction, even if vibration occurs in a part of the rigid plate due to an impact from below or the like, the vibration is attenuated at the divided portion. Therefore, it is difficult for vibration to propagate to the laminated body supported by the lower surface support portion including such a rigid plate.

In the above configuration, it is preferable that the buffer plate is divided into a plurality of small plates in the plane direction. If it does in this way, it will become difficult for the vibration added to the lower surface support part to propagate by a layered product.

In the above configuration, the rigid plate and the buffer plate may be screwed to the base portion so as to be separable. If it does in this way, it will become possible to fix a rigid board and a buffer board to a base part easily, or to remove these easily from a base part. Therefore, the replacement work of the rigid plate and the buffer plate is facilitated.

In the above configuration, it is preferable that a framework of the base portion is provided along the peripheral edge portion of each small plate of the rigid plate. If it does in this way, the peripheral part of each small board of a rigid board will be supported by the framework of a base part. Therefore, it is easy to ensure the rigidity of the lower surface support portion even if the rigid plate is thinned.

In the above configuration, the buffer plate may have a laminated structure including a layer made of foamed resin. If it does in this way, it will become possible to give a moderate elasticity to a buffer board, and to improve shock absorption.

The glass plate package according to the present invention, which was created in order to solve the above problems, is a lower surface support portion of a glass plate pallet appropriately provided with the above-described configuration, in which glass plates and protective sheets are alternately stacked. It is characterized in that the laminate is supported. According to such a configuration, since the vibration applied to the lower surface support portion is difficult to propagate to the glass plate included in the laminated body while ensuring the rigidity of the lower surface support portion, the glass plate is displaced or damaged. The situation can be prevented.

In the above configuration, the thickness of the glass plate is T [mm], the thickness of each layer constituting the laminated structure of the lower surface support portion is D ₁ , D ₂ ... D _n [mm], and the elastic modulus of each layer is E ₁ , E ₂ … E _n [GPa]

It is preferable that the following relationship holds.

Here, if the lower surface support portion bends at a position corresponding to the hole in the base portion, a problem may occur even if the glass plate is not damaged. That is, even if the bending of the lower surface support portion is small enough that the glass plate is not damaged, if the glass plate is thin, the glass plate is slightly deformed following the shape of the lower surface support portion. If it does so, it will become easy to concentrate the load of a glass plate on the position corresponding to the framework of a base part. As a result, foreign matter contained in the protective sheet or the like may be transferred to the glass plate at a position corresponding to the base frame.

Therefore, from the viewpoint of preventing the transfer of foreign matter, as a result of intensive studies to optimize the thickness of the glass plate and the rigidity of the lower surface support portion of the base portion, a relational expression as shown in Equation 1 is derived. It came. That is, the rigidity (bending rigidity) of the lower surface support portion is considered to be proportional to the elastic modulus of the lower surface support portion and proportional to the cube of the thickness of the lower surface support portion. Therefore, when the foreign matter transfer of the glass plate was evaluated based on the value represented by the left side of Equation 1 (hereinafter, referred to as rigidity-related value) and the thickness of the glass plate, It has been derived that the transfer of foreign matter can be reduced to a level where there is no practical problem.

In this case, the total thickness of the lower surface support portion is preferably 20 mm or less. Moreover, it is preferable that the thickness of a glass plate is 0.5 mm or less.

As described above, according to the present invention, it is possible to make it difficult for vibration applied to the lower surface supporting portion to propagate to the glass plate included in the laminated body, while ensuring the rigidity of the lower surface supporting portion that supports the lower surface of the laminated body.

It is a perspective view which shows the glass plate package which concerns on embodiment of this invention. It is a perspective view for demonstrating the principal part of the pallet for glass plates used for the glass plate package of FIG. It is a perspective view for demonstrating the principal part of the pallet for glass plates used for the glass plate package of FIG. It is a perspective view for demonstrating the principal part of the pallet for glass plates used for the glass plate package of FIG. It is a top view for demonstrating the principal part of the pallet for glass plates used for the glass plate package of FIG. FIG. 6 is a cross-sectional view taken along line AA in FIG. 5. It is a perspective view for demonstrating the principal part of the pallet for glass plates used for the glass plate package of FIG. It is a top view for demonstrating the principal part of the pallet for glass plates used for the glass plate package of FIG. It is a top view which shows an example of the glass plate to which the foreign material was transcribe | transferred. It is a graph which shows the test result of a transfer foreign material.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, a glass plate package 1 according to an embodiment of the present invention is a glass plate pallet (hereinafter simply referred to as a pallet) 2, and is formed by alternately stacking glass plates 3 and protective sheets 4. The laminated body 5 is supported. In this embodiment, protective sheets 4 are arranged on the lowermost layer and the uppermost layer of the laminate 5.

The thickness of the glass plate 3 is preferably 0.2 to 1.8 mm, and more preferably 0.2 to 0.5 mm. The glass plate 3 has a rectangular shape, and the length of one side is preferably G5 size (1100 to 1300 mm) or more, and more preferably G8.5 size (2200 to 2500 mm) or more. The density of the glass plate 3 is more preferably 2.0 to 3.0 g / cm ³ . As the glass plate 3, for example, a glass substrate for FPD such as a liquid crystal display is suitable.

The thickness of the protective sheet 4 is preferably 0.05 to 0.2 mm, and more preferably 0.05 to 0.1 mm. The protective sheet 4 has a rectangular shape, and the length of one side is preferably G5 size (1100 to 1300 mm) or more, and more preferably G8.5 size (2200 to 2500 mm) or more. It is preferable that the protective sheet 4 is larger than the glass plate 3 in a plan view and protrudes outward from each side of the glass plate 3 in a state of being interposed between the glass plates 3. For example, a foamed resin sheet or the like may be used as the protective sheet 4, but paper (interleaf) is used in this embodiment.

The pallet 2 includes a base 6 that is placed on the floor surface. In this embodiment, the base portion 6 includes a lower step portion 7 and an upper step portion 8 that is integrally fixed to the lower step portion 7 by welding or the like. The lower step portion 7 and the upper step portion 8 each have a rectangular shape in plan view. The upper step portion 8 is smaller than the lower step portion 7, and a part of the upper surface 7u of the lower step portion 7 is exposed. Note that the base unit 6 is not limited to such a multi-stage shape, and may have a single-stage shape.

At the four corners of the exposed portion of the upper surface 7 u of the lower step portion 7, columns 9 that support the upper glass plate package 1 are detachably provided when the glass plate package 1 is stacked in a plurality of stages. The support column 9 may be omitted.

A fork hole 10 into which a fork of a forklift is inserted is provided in each of the four side surfaces 7s of the lower step part 7.

On the upper surface 8 u of the upper step portion 8, a lower surface support portion 11 that supports the lower surface 5 b of the stacked body 5 is provided. The lower surface support portion 11 has a laminated structure in which a rigid plate 12 arranged on the base portion 6 side (lower side) and a buffer plate 13 arranged on the laminated body 5 side (upper side) are laminated. In this embodiment, the buffer plate 13 has a multilayer structure in which a first buffer plate 14 and a second buffer plate 15 are stacked. Here, if the total thickness of the lower surface support portion 11 is increased, the loading space of the glass plate 3 is reduced, and the loading efficiency of the glass plate 3 is reduced. Therefore, the total thickness of the lower surface support portion 11 may be 20 mm or less. preferable.

In order to restrict horizontal movement of the laminate 5, lower end portions of a plurality of side surface pressing plates 16 are detachably attached to the four side surfaces 8 s of the upper stage portion 8 using stoppers. In this embodiment, two side pressing plates 16 are attached to one side surface 8 s of the upper step portion 8, for a total of eight. Note that the side pressing plate 16 may be omitted.

In the state of the glass plate package 1, an upper surface pressing plate (not shown) is disposed on the upper surface 5u of the laminated body 5 (the upper surface of the uppermost protective sheet 4 in this embodiment), and the upper surface pressing plate is fastened with a belt or the like. The laminated body 5 is hold | maintained on the lower surface support part 11 by fixing to the base part 6 with a tool. As the upper surface pressing plate, for example, a buffer plate such as a foamed resin sheet that is thicker and harder than the protective sheet 4 is used. Further, in order to prevent dust from adhering to the glass plate 3 included in the laminate 5 in the state of the glass plate package 1, the periphery of the laminate 5 is covered with a resin sheet (not shown) as necessary. Is called.

Next, each element constituting the glass plate package 1 will be described in detail.

As shown in FIG. 2, the upper stage portion 8 of the base portion 6 is composed of a lattice-like framework 8f made of a metal such as an aluminum alloy. In other words, the upper stage portion 8 has a plurality of holes 8h penetrating over the upper and lower surfaces of the upper stage portion 8 in a portion where the framework 8f is not provided. Although not shown, the lower step portion 7 of the base portion 6 is also composed of a lattice-like frame made of a metal such as an aluminum alloy, and penetrates through the upper and lower surfaces of the lower step portion 7 in a portion without the frame. A plurality of holes. In addition, at the four corners of the upper stage portion 8, insertion ports 17 for inserting the columns 9 are provided. Of course, when the support column 9 is not provided, the insertion port 17 can also be omitted.

As shown in FIG. 3, a rigid plate 12 is laid on the upper surface 8u of the upper step 8 so as to close the hole 8h. The rigid plate 12 is divided into a plurality of small plates 12p in the planar direction. In this embodiment, the rigid plate 12 is divided into three in the X direction along one side surface 8 s of the upper stage portion 8. In addition, the rigid plate 12 may be divided in the Y direction along the other side surface 8s of the upper stage portion 8 orthogonal to the X direction, but in this embodiment, it is continuous without being divided in the Y direction. Although a gap may be formed between the adjacent small plates 12p, in this embodiment, the adjacent small plates 12p are in contact with each other without a gap. As the rigid plate 12, a metal plate such as an aluminum alloy or stainless steel (SUS) is preferably used. The thickness of the rigid plate 12 is preferably 2 to 20 mm.

As shown in FIG. 4, the first buffer plate 14 is laid on the upper surface 12 u of the rigid plate 12. The first buffer plate 14 is divided into a plurality of small plates 14p in the planar direction. In this embodiment, the first buffer plate 14 is divided into three in the X direction at the same position as the rigid plate 12. The division positions of the rigid plate 12 and the first buffer plate 14 may be the same or different. Moreover, although the 1st buffer plate 14 may be divided | segmented by the Y direction, in this embodiment, it is continuing without being divided | segmented by the Y direction. A gap may be formed between the adjacent small plates 14p, but in this embodiment, no gap is formed between the adjacent small plates 14p, and they are in contact with each other. As the first buffer plate 14, for example, rubber, sponge rubber, resin, foamed resin, or silicone is preferably used. When a foamed resin is used as the first buffer plate 14, it is preferable to use a relatively hard material having an expansion ratio of 3 to 5 times. In this embodiment, a polypropylene three-fold foamed resin is used. The thickness of the first buffer plate 14 is preferably 2 to 20 mm.

As shown in FIG. 5, in the state where the rigid plate 12 and the first buffer plate 14 are laid on the upper stage portion 8 of the base portion 6, the peripheral portion (frame-shaped region) of each small plate 12 p of the rigid plate 12. And the peripheral part (frame-like area | region) of each small board 14p of the 1st buffer plate 14 is supported from the downward direction by the frame 8f of the upper step part 8. FIG. In other words, the hole 8h of the upper step portion 8 is not formed at a position corresponding to the peripheral portion of each small plate 12p of the rigid plate 12 and the peripheral portion of each small plate 12p of the first buffer plate 14.

As shown in FIG. 6, the small plate 12 p of the rigid plate 12 and the small plate 14 p of the first buffer plate 14 are fixed by screws so that predetermined positions such as four corners can be separated from the upper stage portion 8 of the base portion 6. ing. In this embodiment, the small plate 12 p of the rigid plate 12 and the small plate 14 p of the first buffer plate 14 are screwed by a common screw 18. Specifically, a recess 19 is formed at the screwing position of the first buffer plate 14, and a head 18 h of the screw 18 is accommodated in the recess 19. That is, the tip of the head 18 h of the screw 18 is retracted below the upper surface 14 u of the first buffer plate 14. In this state, the shaft portion 18 s of the screw 18 penetrates from the first buffer plate 14 to the upper step portion 8 through the rigid plate 12. In addition, it is preferable that a screwing position is provided outside the area | region where the laminated body 5 is actually arrange | positioned.

As shown in FIG. 7, a second buffer plate 15 is laid on the upper surface 14 u of the first buffer plate 14. The second buffer plate 15 is divided into a plurality of small plates 15p in the planar direction. In this embodiment, the second buffer plate 15 is divided into four in the X direction. That is, the second buffer plate 15 has a larger number of divisions in the X direction than the first buffer plate 14. Furthermore, in this embodiment, the dividing position of the second buffer plate 15 and the dividing position of the first buffer plate 14 do not overlap. The second buffer plate 15 may have the same number of divisions and division positions as the first buffer plate 14. Moreover, although the 2nd buffer plate 15 may be divided | segmented by the Y direction, in this embodiment, it is continuous without being divided | segmented by the Y direction. A gap may be formed between the adjacent small plates 15p, but in this embodiment, no gap is formed between the adjacent small plates 15p, and they are in contact with each other. As the second buffer plate 15, for example, rubber, sponge rubber, resin, foamed resin, or silicone is preferably used. When using a foamed resin as the second buffer plate 15, it is preferable to use a softer one than the first buffer plate 14. In this embodiment, polyurethane foam is used. The second buffer plate 15 is bonded and fixed to, for example, the first buffer plate 14. The thickness of the second buffer plate 15 is preferably 2 to 20 mm. In this embodiment, the thickness of the second buffer plate 15 is smaller than the thickness of the first buffer plate 14.

The laminated body 5 is disposed on the lower surface support portion 11 configured as described above, that is, on the upper surface of the second buffer plate 15. In this state, as shown in FIG. 8, in the actual arrangement region of the laminated body 5 (corresponding to the rectangular region indicated by the alternate long and short dash line in the figure), the portion where the framework 8f of the upper step portion 8 of the base portion 6 is present. In addition, there is a portion without the frame 8f (portion with the hole 8h), but the lower surface support portion 11 has a configuration in which the buffer plate 13 is reinforced by the rigid plate 12. Therefore, it is easy to increase the rigidity of the lower surface support part 11 as compared with the case where the lower surface support part 11 is formed only by the buffer plate 13. Therefore, even if the thickness of the lower surface support portion 11 is reduced, it is possible to suppress the lower surface support portion 11 from being bent at a position corresponding to the hole 8 h of the upper step portion 8. Further, since the rigid plate 12 is divided into a plurality of small plates 12p in the planar direction, even if vibration occurs in a part of the rigid plate 12 due to an impact from below, the rigid plate 12 is weakened at the divided portion and vibrates in the laminated body 5. Can be prevented from occurring.

Here, when the glass plate 3 is thin (especially when the thickness of the glass plate 3 is 0.5 mm or less), if the lower surface support portion 11 bends at a position corresponding to the hole 8h of the upper step portion 8, the glass plate 3 is damaged. Even if not, there is a risk of deformation following the shape of the lower surface support portion 11. As a result, the position corresponding to the frame 8f is kept relatively high. As a result, the load of the glass plate 3 concentrates at a position corresponding to the frame 8f, and there is a possibility that the foreign matter P contained in the protective sheet 4 is transferred to the glass plate 3 as shown in FIG. Therefore, when paying attention to the transfer of the foreign matter P, it is preferable to further include the following configuration.

That is, the thickness of the glass plate 3 is T [mm], the thickness of each layer constituting the laminated structure of the lower surface support portion 11 is D ₁ , D ₂ ... D _n [mm], and the elastic modulus of each layer is E ₁ , E _2. When satisfying E _n [GPa], it is preferable to satisfy the relationship defined in Equation 1. Thereby, the transfer of the foreign matter P to the glass plate 3 can be reduced as much as possible.

Formula 1 is derived from experiments. The reason is shown below.

The experiment was carried out by counting the number of foreign matter transferred on the glass plate of each pallet after transporting the glass plates stacked and transported on pallets with different materials and thickness of the lower surface support. The detailed experimental conditions are as follows.

As the glass plate, OA-10G manufactured by Nippon Electric Glass Co., Ltd. having a horizontal dimension of 2200 mm and a vertical dimension of 2500 mm is used. The glass plate has four types of thicknesses of 0.7 mm, 0.5 mm, 0.4 mm, and 0.3 mm. A glass package is produced by loading glass plates of various thicknesses on each pallet with the same weight. Each produced glass plate package is cleaned after being transported by truck along the same route of 200 km, and the number of transferred foreign matters of 1 μm or less on the surface of the glass plate is counted by an image inspection apparatus. Transfer foreign matter exceeding 1 μm is removed by washing. In consideration of the defect occurrence rate in the manufacturing process of the past liquid crystal display, the number of transferred foreign matters is defined as “pass” when the number of transfer foreign matters of 1 μm or less is less than 100, and “fail” when 100 or more. The number of transferred foreign objects is the value obtained by counting the number of transferred foreign substances on each glass plate loaded on the pallet and dividing the total number of transferred foreign objects on each glass plate by the number of laminated sheets, that is, the average value per glass plate. And

The plate materials used for the lower surface support part of the pallet are expanded polypropylene (PP), hard polyvinyl chloride (PVC), stainless steel plate (SUS304), and aluminum plate (Al), and each elastic modulus is PP: 1.5 GPa, PVC: 4 GPa, SUS: 200 GPa, Al: 70 GPa. Then, one of these plate materials or two or more different ones are selected and used for the lower surface support portion. When two or more plate materials are selected, the selected plate materials are stacked to form a laminated structure (where the buffer plate is on the upper surface side). Moreover, each layer which comprises a lower surface support part is divided | segmented into three by the plane direction (for example, refer FIG. 3 or FIG. 4).

The above experimental results are shown in Table 1.

FIG. 10 shows a graph of the results of Table 1 with the horizontal axis representing the glass plate thickness and the vertical axis representing the stiffness-related value represented by the left side of Equation 1. In FIG. 10, “◯” indicates that the number of transferred foreign substances is acceptable, and “X” indicates that the number of transferred foreign substances is not acceptable.

Approximate curve C serving as a boundary between pass and fail is obtained from the result of FIG. The approximate curve C is y = a / T + b. Here, T is a variable on the horizontal axis (thickness of the glass plate), y is a variable on the vertical axis (a rigidity-related value of the lower surface support portion), and a and b are constants. Then, in the obtained approximate curve C, a is “1513”, b is “−771”, and the right side of Equation 1 is obtained. As shown in FIG. 10, it can be recognized that in the region where the rigidity-related value of the lower surface support portion is larger than the approximate curve C, the number of transferred foreign matters satisfies the acceptance criteria. Therefore, the relational expression defined in Equation 1 is derived.

As mentioned above, although the pallet for glass plates which concerns on embodiment of this invention, and the glass plate package using the same were demonstrated, embodiment of this invention is not limited to this, In the range which does not deviate from the summary of this invention Changes can be made.

In the above embodiment, the case where the buffer plate 13 is composed of the first buffer plate 14 and the second buffer plate 15 has been described. However, the buffer plate 13 may be a single layer or a multilayer of three or more layers. It may be. *

Moreover, in said embodiment, while stiffening the rigid board 12 and the 1st buffer board 14 to the upper stage part 8 of the base part 6, the case where the 2nd buffer board 15 is adhere | attached on the 1st buffer board 14 is demonstrated. However, the fixing method of each layer which comprises the lower surface support part 11 is not specifically limited, Arbitrary methods can be employ | adopted. For example, all the layers constituting the lower surface support portion 11 may be bonded and fixed (including welding).

DESCRIPTION OF SYMBOLS 1 Glass plate package 2 Pallet 3 Glass plate 4 Protection sheet 5 Laminate body 6 Base part 7 Lower step part 7s Four side surface 7u Upper surface 8 Upper step part 8h Hole 8f Frame 9 Post 10 Fork hole 11 Lower surface support part 12 Rigid board 12p Small Plate 13 Buffer plate 14 First buffer plate 14p Small plate 15 Second buffer plate 15p Small plate 16 Side plate 17 Insert port 18 Screw

Claims

It is a glass plate pallet for packing a laminate formed by stacking a plurality of glass plates,
A base part composed of a lattice-like frame in which a plurality of holes are formed;
A lower surface support portion provided on the upper surface of the base portion and supporting the lower surface of the laminate,
The lower surface support portion has a laminated structure including a rigid plate laid on the upper surface of the base portion so as to close the hole, and a buffer plate laid on the upper surface of the rigid plate,
The glass plate pallet, wherein the rigid plate is divided into a plurality of small plates in a planar direction.
The glass plate pallet according to claim 1, wherein the buffer plate is divided into a plurality of small plates in a planar direction.
The glass plate pallet according to claim 1 or 2, wherein the rigid plate and the buffer plate are screwed to the base portion so as to be separable.
The glass plate pallet according to any one of claims 1 to 3, wherein a frame of the base portion is provided along a peripheral edge portion of the small plate of each of the rigid plates.
The glass plate pallet according to any one of claims 1 to 4, wherein the buffer plate has a laminated structure including a layer made of foamed resin.
The glass plate pallet according to any one of claims 1 to 5, wherein the lower surface support portion supports a laminated body in which glass plates and protective sheets are alternately stacked. Glass plate package.
The thickness of the glass plate is T [mm], the thickness of each layer constituting the laminated structure of the lower surface support portion is D 1 , D 2 ... D n [mm], and the elastic modulus of each layer is E 1 , E 2 . n When [GPa]

The glass plate package according to claim 6, wherein the following relationship is established.
The glass plate package according to claim 7, wherein a total thickness of the lower surface support portion is 20 mm or less.
The glass plate package according to claim 7 or 8, wherein the glass plate has a thickness of 0.5 mm or less.