CN109562889B

CN109562889B - Bracket for glass plate and glass plate package body

Info

Publication number: CN109562889B
Application number: CN201780048485.3A
Authority: CN
Inventors: 松本保弘
Original assignee: Nippon Electric Glass Co Ltd
Current assignee: Nippon Electric Glass Co Ltd
Priority date: 2016-08-16
Filing date: 2017-08-07
Publication date: 2020-12-11
Anticipated expiration: 2037-08-07
Also published as: TWI734822B; JP6711403B2; TW201811631A; WO2018034025A1; CN109562889A; JPWO2018034180A1

Abstract

A glass plate package (1) is formed by supporting a laminate (5) by a bracket (2), wherein the laminate (5) is formed by alternately stacking glass plates (3) and protective sheets (4) in a flat manner. The bracket (2) is provided with: a base part (6) which is composed of a grid-shaped framework formed with a plurality of holes; and a main surface support section (11) which is provided on the upper surface of the base section (6) and supports the main surface of the glass plate (3) of the laminate (5) from below. A laminated structure including a rigid plate (12), a first buffer plate (14), and a second buffer plate (15) is formed on the main surface support portion (11), the rigid plate (12) is laid on the upper surface of the base portion 6 so as to close the hole and is divided into a plurality of small plates in the plane direction, the first buffer plate (14) is laid on the upper surface of the rigid plate (12), and the second buffer plate (15) is laid on the upper surface of the first buffer plate (14).

Description

Bracket for glass plate and glass plate package body

Technical Field

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

Background

As is well known, glass plates used in various fields, such as glass substrates for Flat Panel Displays (FPDs) such as liquid crystal displays, plasma displays, and organic EL displays, and cover glasses for organic EL illumination, are actually required to be large-sized and thin-walled in recent years. Therefore, the glass sheets are likely to be damaged, and the packing form of the glass sheets during storage and transportation is extremely important.

As such a glass plate packaging form, there is known a packaging form in which a plurality of glass plates are stacked (stacked) on a pallet in a flat state in a laminated body state and the laminated body is packaged (for example, see patent documents 1 to 2). In this packaging mode, the weight of the glass sheets is mainly supported by the principal surfaces (surfaces facing each other in the thickness direction) of the glass sheets, and therefore, there is an advantage that unnecessary stress is less likely to concentrate on the edges of the glass sheets which are likely to cause breakage.

Here, the pallet for packing a laminate in which a plurality of glass plates are stacked flat includes a base portion that is placed on a floor or the like. From the viewpoint of weight reduction, the base portion is often formed of a lattice-shaped skeleton made of a metal such as an aluminum alloy, and a plurality of holes are further formed in portions corresponding to the support regions of the laminated body. In general, a single cushion plate is laid on the upper surface of the base portion so as to close the hole (see, for example, fig. 4 of patent document 2). In this case, the buffer plate serves as a main surface support portion for supporting the main surface (lower surface) of the glass plates included in the laminate from below.

As a packing form of glass sheets, there is also known a packing form in which a plurality of glass sheets are stacked on a pallet in a vertical posture and packed in a state of a laminate (for example, patent documents 3 to 4). In this packaging form, since the glass sheets are stacked in the vertical posture, there is an advantage that space efficiency during conveyance or the like is good.

Here, the bracket for packaging the laminate in which the plurality of glass plates are stacked in the vertical posture is configured to include a base portion to be placed on a floor or the like and a back receiving portion rising from a rear side of the base portion, and the laminate in which the plurality of glass plates are stacked in the vertical posture is arranged above the base portion and in front of the back receiving portion. From the viewpoint of weight reduction, the back receiving portion is often formed of a grid-like skeleton made of a metal such as an aluminum alloy, and a plurality of holes are further formed in portions corresponding to the support regions of the laminated body. In general, a single cushion plate is laid on the front surface of the back receiving portion so as to close the hole. In this case, the buffer plate serves as a main surface support portion for supporting the main surface of the glass plates included in the laminate from behind.

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2010-143599

Patent document 2: japanese laid-open patent publication No. 2010-168046

Patent document 3: japanese patent laid-open No. 2008-143539

Patent document 4: japanese patent laid-open No. 2008-143541

Disclosure of Invention

Problems to be solved by the invention

However, in a case where the pallet for packing a laminated body in which a plurality of glass plates are stacked flatly is configured to close a plurality of holes of the base portion with only one large buffer plate, the following problems may occur with an increase in size and thickness of the glass plates.

First, as the glass plate is increased in size, a load supported by the cushion plate serving as the main surface supporting portion is increased, and it is difficult to secure sufficient rigidity only by the cushion plate. As a result, the cushion plate may be bent at a position corresponding to the hole of the base portion. In this case, since the glass plate itself is easily deformed as the thickness of the laminate becomes thinner, the glass plate included in the laminate may be deformed in accordance with the deflection of the buffer plate. In particular, the glass plates are likely to be deformed more greatly in the lower portion of the laminate, and this may cause breakage of the glass plates.

Second, since the cushion plate serving as the main surface support portion is a single continuous plate member, when vibration is applied to a part of the cushion plate due to an impact from below or the like, the vibration is easily transmitted to the entire cushion plate. As a result, the glass plates included in the laminate may be displaced or broken. Here, although it is also conceivable to use a cushion plate having a high vibration absorbing performance, such a cushion plate is generally low in rigidity. Therefore, even if the problem of vibration can be solved, the problem of flexure described above becomes large.

In a pallet for packing a laminated body in which a plurality of glass plates are laminated in a vertical posture, such a problem may similarly occur in a case where a plurality of holes of a back receiving portion are closed by a main surface supporting portion formed of one large cushion plate.

The present invention has a technical problem of ensuring the rigidity of a main surface supporting part for supporting the main surface of a laminated body and making the vibration applied to the main surface supporting part difficult to be transmitted to a glass plate included in the laminated body.

Means for solving the problems

A bracket for glass plates according to the present invention, which is created to solve the above-described problems, is used for packing a laminate in which a plurality of glass plates are stacked flat, and the bracket for glass plates includes: a base portion composed of a lattice-shaped skeleton in which a plurality of holes are formed; and a main surface support portion that is provided on an upper surface of the base portion and supports a main surface of the glass plate of the laminate from below, the main surface support portion having a laminated structure including a rigid plate and a buffer plate, the rigid plate being laid on the upper surface of the base portion so as to close the hole, the buffer plate being laid on the upper surface of the rigid plate, and the rigid plate being divided into a plurality of small plates in a planar direction. According to this configuration, since the main surface support portion that supports the main surface (lower surface) of the glass plate of the laminate has a laminated structure in which the buffer plate is reinforced by the rigid plate, the rigidity of the main surface support portion can be increased. Further, 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 external impact or the like, the vibration can be attenuated by the divided part. Therefore, the vibration is also less likely to be transmitted to the laminated body supported by the main surface support portion including the rigid plate.

In the above configuration, it is preferable that the buffer plate is divided into a plurality of small plates in a planar direction. In this way, the vibration applied to the main surface supporting portion becomes more difficult to be transmitted to the laminated body.

In the above configuration, the rigid plate and the cushion plate may be detachably screwed to the base portion. In this way, the rigid plate and the cushion plate can be easily fixed to the base portion or can be easily removed from the base portion. Therefore, the work of replacing the rigid plate and the cushion plate becomes easy.

In the above configuration, it is preferable that a skeleton of the abutment portion is provided along a peripheral edge portion of each of the small plates of the rigid plate. In this way, the peripheral edge portions of the small plates of the rigid plate are supported by the framework of the base portion. Therefore, even if the rigid plate is made thin, the rigidity of the main surface support portion is easily ensured.

In the above structure, the cushion plate may have a laminated structure including a layer made of a foamed resin. Thus, the cushion plate can be given appropriate elastic force to improve the impact absorbability.

The glass plate package according to the present invention, which has been made to solve the above problems, is characterized in that the glass plate package is formed by supporting a laminate formed by alternately stacking glass plates and protective sheets on a main surface support portion of a glass plate bracket which is appropriately provided with the above structure and used for packaging a laminate formed by stacking a plurality of glass plates on top of each other. According to this configuration, since the rigidity of the main surface support portion can be secured and the vibration applied to the main surface support portion can be made less likely to be transmitted to the glass plates included in the laminate, the glass plates can be prevented from being misaligned or damaged.

In the above configuration, it is preferable that the thickness of the glass plate is T [ mm ]]D represents the thickness of each layer of the laminated structure constituting the main surface support portion₁、D₂…D_n[mm]The elastic modulus of each layer is defined as E₁、E₂…E_n[GPa]In the case of (a) in (b),

[ mathematical formula 1]

The relationship of (1) holds.

Here, when the main surface support portion is bent at a position corresponding to the hole of the base portion, there is a possibility that a problem may occur even if the glass plate is not broken. That is, even if the main surface support portion is deflected to a small extent that does not cause breakage of the glass plate, the glass plate is slightly deformed following the shape of the main surface support portion when the glass plate is thin. Thus, the load of the glass plate is easily concentrated at the position corresponding to the skeleton of the base portion. 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 skeleton of the base portion.

In view of preventing the transfer of foreign matter, intensive studies have been made to optimize the thickness of the glass plate and the rigidity of the main surface support portion of the base portion, and as a result, a relational expression such as that shown in mathematical formula 1 is finally derived. That is, it is considered that the rigidity (bending rigidity) of the main surface supporting portion is proportional to the elastic modulus of the main surface supporting portion and proportional to the third power of the thickness of the main surface supporting portion. Therefore, when the foreign matter transfer of the glass plate is evaluated based on the value represented on the left side of the equation 1 (hereinafter referred to as a stiffness-related value) and the thickness of the glass plate, it is finally derived that the transfer of the foreign matter to the glass plate can be reduced to such an extent that there is no problem in practice when the relationship of the equation 1 is satisfied.

In this case, the total thickness of the main surface supporting portions is preferably 20mm or less. Further, it is preferable that the glass plate has a thickness of 0.5mm or less.

A bracket for glass plates according to the present invention, which is created to solve the above-described problems, is used for packing a laminate in which a plurality of glass plates are laminated in a vertical posture, and is characterized by comprising: an abutment portion; a back receiving part which is composed of a grid-shaped framework which is erected from the rear side of the base part and is provided with a plurality of holes; a main surface support portion which is provided on the front surface of the back support portion and supports the main surface of the glass plate of the laminate from behind; and a side support portion which is provided so as to be joined to the base portion and/or the back support portion and supports an edge of the glass plate of the laminate from below, wherein the main surface support portion has a laminated structure including a rigid plate which is laid on a front surface of the back support portion so as to close the hole, and a buffer plate which is laid on a front surface of the rigid plate and is divided into a plurality of small plates in a planar direction. According to this configuration, since the main surface support portion that supports the main surface (rear surface) of the glass plate of the laminate has a laminated structure in which the buffer plate is reinforced by the rigid plate, the rigidity of the main surface support portion can be increased. Further, 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 external impact or the like, the vibration can be attenuated by the divided part. Therefore, the vibration is also less likely to be transmitted to the laminated body supported by the main surface support portion including the rigid plate.

In the above configuration, the rigid plate and the cushion plate may be detachably screwed to the back receiving portion. In this way, the rigid plate and the cushion plate can be easily fixed to the back receiving portion or can be easily removed from the back receiving portion. Therefore, the work of replacing the rigid plate and the cushion plate becomes easy.

In the above configuration, preferably, the frame of the back receiving portion is provided along a peripheral edge portion of each of the small plates of the rigid plate. In this way, the peripheral edge portions of the small plates of the rigid plate are supported by the framework of the back receiving portion. Therefore, even if the rigid plate is made thin, the rigidity of the main surface support portion is easily ensured.

The glass plate package according to the present invention, which has been made to solve the above-described problems, is characterized in that the glass plate package is formed by supporting a laminate, which is formed by alternately stacking glass plates and protective sheets in a vertical posture, at a portion including a main surface support portion and an edge support portion of a glass plate bracket that is suitably provided with the above-described structure and is used for packaging a laminate in which a plurality of glass plates are stacked in a vertical posture. According to this configuration, since the rigidity of the main surface support portion can be secured and the vibration applied to the main surface support portion can be made less likely to be transmitted to the glass plates included in the laminate, the glass plates can be prevented from being misaligned or damaged.

In the above configuration, it is preferable that an angle formed by the front surface of the main surface supporting portion and the vertical plane is 13 to 23 °, and the thickness of the glass plate is T [ mm ]]And D represents the thickness of each layer of the laminated structure constituting the main surface support portion₁、D₂…D_n[mm]The elastic modulus of each layer is defined as E₁、E₂…E_n[GPa]In the case of (a) in (b),

[ mathematical formula 2]

The relationship of (1) holds. In this way, the transfer of foreign matter to the glass plate can be reduced to a level that causes no practical problem.

Effects of the invention

As described above, according to the present invention, it is possible to ensure the rigidity of the main surface support portion that supports the main surfaces of the glass plates of the laminate, and to make it difficult for vibrations applied to the main surface support portion to be transmitted to the glass plates included in the laminate.

Drawings

Fig. 1 is a perspective view showing a glass plate package according to a first embodiment of the present invention.

Fig. 2 is a perspective view for explaining a main part of a glass plate holder used in the glass plate package body of fig. 1.

Fig. 3 is a perspective view for explaining a main part of a glass plate holder used in the glass plate package body of fig. 1.

Fig. 4 is a perspective view for explaining a main part of a glass plate holder used in the glass plate package body of fig. 1.

FIG. 5 is a plan view for explaining a main part of a holder for glass plates used in the glass plate package body of FIG. 1.

Fig. 6 is a sectional view a-a of fig. 5.

Fig. 7 is a perspective view for explaining a main part of a glass plate holder used in the glass plate package body of fig. 1.

FIG. 8 is a plan view for explaining a main part of a holder for glass plates used in the glass plate package body of FIG. 1.

Fig. 9 is a plan view showing an example of the glass plate after the foreign matter transfer.

Fig. 10 is a graph showing the inspection result of the transfer foreign matter.

Fig. 11 is a perspective view showing a glass plate package according to a second embodiment of the present invention.

Fig. 12 is a perspective view for explaining a main part of a glass plate holder used in the glass plate package body of fig. 11.

Fig. 13 is a perspective view for explaining a main part of a glass plate holder used in the glass plate package body of fig. 11.

Fig. 14 is a perspective view for explaining a main part of a glass plate holder used in the glass plate package body of fig. 11.

Fig. 15 is a front view for explaining a main part of a glass plate holder used in the glass plate package body of fig. 11.

Fig. 16 is a sectional view B-B of fig. 15.

Fig. 17 is a perspective view for explaining a main part of a glass plate holder used in the glass plate package body of fig. 11.

Fig. 18 is a front view for explaining a main part of a bracket for a glass plate used in the glass plate body of fig. 11.

Fig. 19 is a graph showing the inspection result of the transfer foreign matter.

Detailed Description

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

(first embodiment)

As shown in fig. 1, a glass plate package 1 according to a first embodiment of the present invention is formed by supporting a laminate 5 by a glass plate bracket (hereinafter, simply referred to as a bracket) 2, and the laminate 5 is formed by stacking glass plates 3 and protective sheets 4 alternately in a flat manner. In the present embodiment, the protective sheets 4 are disposed on the lowermost surface and the uppermost surface of the laminate 5. In the figure, the X1 direction and the Y1 direction are orthogonal to each other.

The thickness of the glass plate 3 is preferably 0.2 to 1.8mm, more preferably 0.2 to 0.5 mm. The glass plate 3 has a rectangular shape, and preferably has a length of one side of G5 size (1100 to 1300mm) or more, and more preferably G8.5 size (2200 to 2500mm) or more. Preferably, the density of the glass plate 3 is 2.0 to 3.0g/cm³. The glass plate 3 is preferably a glass substrate for an FPD such as a liquid crystal display.

The thickness of the protective sheet 4 is preferably 0.05 to 0). about.2 mm, more preferably 0.05 to 0.1 mm. The protective sheet 4 has a rectangular shape, and preferably has a length of one side of G5 size (1100 to 1300mm) or more, and more preferably G8.5 size (2200 to 2500mm) or more. Preferably, the protective sheet 4 is larger than the glass plates 3 in a plan view, and protrudes outward from each side of the glass plates 3 in a state of being sandwiched between the glass plates 3. As the protective sheet 4, for example, a foamed resin sheet or the like can be used, but in the present embodiment, paper (laminated paper) is used.

The bracket 2 includes a base portion 6 to be placed on a floor or the like. In the present embodiment, the base portion 6 includes a lower step portion 7 and an upper step portion 8, and the upper step portion 8 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 stage portion 8 is smaller than the lower stage portion 7, and a part of the upper surface 7u of the lower stage portion 7 is exposed. The base portion 6 is not limited to such a multi-stage shape, and may be a shape formed of only one stage.

At four corners of the exposed portion of the upper surface 7u of the lower step portion 7, pillars 9 are detachably provided, and the pillars 9 support the upper glass plate package 1 when the glass plate packages 1 are stacked in multiple stages. The support column 9 may be omitted.

The four side surfaces 7s of the lower stage 7 are provided with fork holes 10 into which forks of a forklift are inserted.

A main surface support portion (lower surface support portion) 11 for supporting the lower surface 5b of the stacked body 5 (the main surface of the glass plate 3) from below is provided on the upper surface 8u of the upper step portion 8. The main surface support portion 11 has a laminated structure in which a rigid plate 12 and a cushion plate 13 are laminated, the rigid plate 12 being disposed on the base portion 6 side (lower side), and the cushion plate 13 being disposed on the laminated body 5 side (upper side). In the present embodiment, the cushion plate 13 has a multilayer structure in which the first cushion plate 14 and the second cushion plate 15 are laminated. Here, when the total thickness of the main surface support portions 11 is increased, the stacking space of the glass plates 3 is reduced, and the stacking efficiency of the glass plates 3 is lowered, so it is preferable that the total thickness of the main surface support portions 11 is 20mm or less.

In order to restrict the horizontal movement of the stacked body 5, the lower end portions of the plurality of side surface press plates 16 are detachably attached to the four side surfaces 8s of the upper stage portion 8 using stoppers such as screws, respectively. In the present embodiment, two side surface presser plates 16 are attached to each side surface 8s of the upper stage portion 8, and eight side surface presser plates 16 in total are attached. Preferably, the side surface pressing plate 16 abuts against the end edge of the protective sheet 4 protruding to the periphery of the glass plate 3. In other words, it is preferable that the side press plates 16 do not directly contact the glass plate 3. The side press 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 laminate 5 (the upper surface of the protective sheet 4 positioned on the uppermost surface in the present embodiment), and the laminate 5 is held on the main surface support portion 11 by pressing the upper surface pressing plate against the base portion 6 with a fastening member such as a tape. For example, as disclosed in japanese patent application laid-open No. 2009-202900, the following configuration may be adopted: a plurality of pressure levers are arranged in parallel on the upper surface of the upper surface platen, and both ends of each pressure lever extending from the laminated body 5 are pressed against the base portion 6 side by a fastening member (a belt, a rod-shaped or tubular rod-shaped body capable of fixing the pressure lever at a predetermined position in the longitudinal direction). As the upper surface pressing plate, for example, a cushion plate such as a foamed resin sheet having a larger wall thickness than the protective sheet 4 and having a high hardness can be used. In order to prevent dust from adhering to the glass plates 3 included in the laminate 5 in the state of the glass plate package 1, a resin stretchable film may be wound around the glass plate package 1 or a bag may be put thereon, if necessary.

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 formed of a lattice-shaped skeleton 8c, and the lattice-shaped skeleton 8c is formed of a metal such as an aluminum alloy. In other words, the upper stage 8 has a plurality of holes 8h penetrating through the upper and lower surfaces of the upper stage 8 at portions where the skeleton 8c does not exist. Although not shown, the lower section 7 of the base section 6 is also formed of a grid-like skeleton made of a metal such as an aluminum alloy and having a plurality of holes penetrating through the upper and lower surfaces of the lower section 7 in portions where no skeleton is present. Insertion ports 17 for inserting the support posts 9 are provided at four corners of the upper stage portion 8. Of course, the insertion port 17 may be omitted when the stay 9 is not provided.

As shown in fig. 3, a rigid plate 12 is laid on the upper surface 8u of the upper stage portion 8 so as to close the hole 8 h. The rigid plate 12 is divided into a plurality of small plates 12p in the plane direction. In the present embodiment, the rigid plate 12 is divided into three in the X1 direction along the one side surface 8s of the upper stage portion 8. The rigid plate 12 may be divided in the Y1 direction along the other side surface 8s of the upper stage portion 8, which is orthogonal to the X1 direction, but in the present embodiment, it is continuous without being divided in the Y1 direction. Although a gap may be formed between the adjacent small plates 12p, in the present embodiment, the adjacent small plates 12p are in contact with each other without a gap therebetween. As the rigid plate 12, a metal plate such as an aluminum alloy or stainless steel (SUS) is preferably used. Preferably, the thickness of the rigid plate 12 is 2 to 20 mm.

As shown in fig. 4, a first buffer plate 14 is laid on the upper surface 12u of the rigid plate 12. The first buffer plate 14 is divided into a plurality of small plates 14p in the plane direction. In the present embodiment, the first buffer plate 14 is divided into three in the X1 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. Although the first buffer plate 14 may be divided in the Y1 direction, it is not divided but continuous in the Y1 direction in the present embodiment. Although a gap may be formed between the adjacent small plates 14p, in the present embodiment, the adjacent small plates 14p are in contact with each other without forming a gap therebetween. As the first buffer plate 14, for example, rubber, sponge rubber, resin, foamed resin, silicone, or the like is preferably used. When the foamed resin is used as the first cushion plate 14, it is preferable to use a relatively hard foamed resin having an expansion ratio of 3 to 5 times. In the present embodiment, a polypropylene triple foamed resin is used. Preferably, the thickness of the first buffer plate 14 is 2 to 20 mm.

As shown in fig. 5, in a 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 edge portions (frame-shaped regions) of the small plates 12p of the rigid plate 12 and the peripheral edge portions (frame-shaped regions) of the small plates 14p of the first buffer plate 14 are supported from below by the framework 8c of the upper stage portion 8. In other words, the holes 8h of the upper stage portion 8 are not formed at positions corresponding to the peripheral edge portions of the small plates 12p of the rigid plate 12 and the peripheral edge portions of the small plates 12p of the first buffer plate 14.

As shown in fig. 6, predetermined positions, such as the four corners, of the small plate 12p of the rigid plate 12 and the small plate 14p of the first buffer plate 14 are detachably fixed to the upper stage portion 8 of the base portion 6 by screws. In the present embodiment, the small plate 12p of the rigid plate 12 and the small plate 14p of the first buffer plate 14 are screwed by the common screw 18. Specifically, a recess 19 is formed at the screw fixing position of the first buffer plate 14, and the head 18h of the screw 18 is received in the recess 19. That is, the tip of the head 18h of the screw 18 is retreated downward from the upper surface 14u of the first buffer plate 14. In this state, the shaft portion 18s of the screw 18 penetrates from the first buffer plate 14 to the upper stage portion 8 through the rigid plate 12. It is preferable that the screw fixing position is provided outside the region where the stacked body 5 is actually disposed.

As shown in fig. 7, a second buffer plate 15 is laid on the upper surface 14u of the first buffer plate 14. The second buffer plate 15 is divided into a plurality of small plates 15p in the plane direction. In the present embodiment, the second buffer plate 15 is divided into four in the X1 direction. That is, the second buffer plate 15 has a larger number of divisions in the X1 direction than the first buffer plate 14. In the present embodiment, the dividing position of the second buffer plate 15 does not coincide with the dividing position of the first buffer plate 14. The number of divisions and the division positions of the second buffer plate 15 may be the same as those of the first buffer plate 14. Although the second buffer plate 15 may be divided in the Y1 direction, it is not divided but continuous in the Y1 direction in the present embodiment. Although a gap may be formed between the adjacent small plates 15p, in the present embodiment, the adjacent small plates 15p are in contact with each other without forming a gap therebetween. As the second buffer plate 15, for example, rubber, sponge rubber, resin, foamed resin, or silicone is preferably used. In the case where the foamed resin is used as the second cushion plate 15, it is preferable to use the foamed resin softer than the first cushion plate 14. In the present embodiment, a polyurethane foam is used. The second buffer plate 15 is fixed to the first buffer plate 14 by bonding, for example. Preferably, the thickness of the second buffer plate 15 is 2 to 20 mm. In the present embodiment, the thickness of the second buffer plate 15 is smaller than the thickness of the first buffer plate 14.

The laminate 5 is disposed on the main surface support 11 configured as described above, that is, on the upper surface of the second cushion plate 15. In this state, as shown in fig. 8, in the actual arrangement region of the laminated body 5 (the region corresponding to the rectangular region shown by the chain line in the figure), there are a portion where the skeleton 8c of the upper stage portion 8 of the base portion 6 is present and a portion where the skeleton 8c is absent (the portion having the hole 8 h), but the main surface support portion 11 is configured to reinforce the cushion plate 13 with the rigid plate 12. Therefore, the rigidity of the main surface support portion 11 can be easily increased as compared with a case where the main surface support portion 11 is formed only by the cushion plate 13. Therefore, even if the main surface support portion 11 is made thin, the main surface support portion 11 can be suppressed from being bent at a position corresponding to the hole 8h of the upper stage portion 8. Further, since the rigid plate 12 is divided into the plurality of small plates 12p in the planar direction, even if vibration is generated in a part of the rigid plate 12 by an impact from the outside (for example, below), the vibration can be attenuated by the divided part, and the influence of the vibration on the laminated body 5 can be prevented.

Here, when the glass plate 3 is thin (particularly, when the thickness of the glass plate 3 is 0.5mm or less), if the main surface support portion 11 is bent at a position corresponding to the hole 8h of the upper step portion 8, the glass plate 3 may be deformed so as to follow the shape of the main surface support portion 11 even without being damaged. Thus, the position corresponding to the skeleton 8c is held at a relatively high position. As a result, the load of the glass plate 3 is concentrated at the position corresponding to the skeleton 8c, and as shown in fig. 9, there is a possibility that the foreign matter P included in the protective sheet 4 is transferred to the glass plate 3. In view of this, when focusing attention on the transfer of the foreign matter P, the glass plate package 1 preferably further includes the following configuration.

That is, it is preferable that the thickness of the glass plate 3 is T [ mm ]]D represents the thickness of each layer of the laminated structure constituting the main surface support 11₁、D₂…D_n[mm]The elastic modulus of each layer is defined as E₁、E₂…E_n[GPa]In the case of (3), the glass plate package 1 satisfies the relationship defined by the above equation 1. This can reduce transfer of the foreign matter P to the glass plate 3 as much as possible.

Mathematical formula 1 is an equation derived through experiments. The basis for this is shown below.

The experiment was carried out as follows: glass plates are stacked and conveyed in a flatly stacked manner on the carriers with the materials and thicknesses of the main surface supporting parts changed, and then the number of foreign matter transfer printing of the glass plates of each carrier is counted. The detailed experimental conditions are as follows.

As the glass plate, the lateral dimensions: 2200mm, longitudinal dimension: OA-10G available from Nippon electric Nitri K.K. of 2500 mm. The thickness of the glass plate is four of 0.7mm, 0.5mm, 0.4mm and 0.3 mm. Glass plates of each thickness were placed flat on each tray and stacked by the same weight, thereby producing a glass package. After each of the produced glass plate packages was carried by a truck along the same route of 200km, the packages were cleaned, and the number of foreign matters transferred to the surface of the glass plate, which were 1 μm or less, was counted by an image inspection apparatus. The foreign transfer material exceeding 1 μm is removed by cleaning. In consideration of the failure occurrence rate in the conventional manufacturing process of a liquid crystal display, the number of foreign matters transferred is determined as "good" when the number of foreign matters transferred is less than 100 and is equal to or less than 1 μm, and is determined as "bad" when the number of foreign matters transferred is 100 or more. The number of the transfer foreign matters is a value obtained by counting the number of the transfer foreign matters on each glass plate stacked on the carrier and dividing the total number of the transfer foreign matters on each glass plate by the number of the stacked glass plates, that is, an average value for each glass plate.

The sheet materials used in the main surface supporting portion of the bracket were expanded polypropylene (PP), rigid polyvinyl chloride (PVC), stainless steel sheet (SUS304), and aluminum sheet (a1), and the respective elastic modulus were PP: 1.5GPa, PVC: 4GPa, SUS: 200GPa, A1: 70 GPa. One or two or more different plate materials are selected from these plate materials and used for the main surface support portion. When two or more plate materials are selected, the selected plate materials are stacked to form a stacked structure (in which the buffer plate is on the upper surface side). Each layer constituting the main surface support portion is divided into three layers in the planar direction (see, for example, fig. 3 or 4).

The results of the above experiments are shown in table 1.

[ Table 1]

Fig. 10 is a graph in which the results of table 1 are graphed with the horizontal axis representing the glass sheet thickness and the vertical axis representing the rigidity-related value indicated on the left side of equation 1. In fig. 10, the case where the number of transfer foreign matters is acceptable is indicated as "o", and the case where the number of transfer foreign matters is not acceptable is indicated as "x".

From the results of fig. 10, an approximate curve C1 demarcating pass and fail was obtained. The approximate curve C1 is y ═ a/T + b. Here, T is a variable (thickness of the glass plate) on the horizontal axis, y is a variable (rigidity-related value of the main surface supporting portion) on the vertical axis, and a and b are constants. Thus, in the solved approximate curve C1, a is "1513" and b is "-771", and the right side of equation 1 is solved. As shown in fig. 10, in the region where the rigidity-related value of the main surface supporting portion is larger than the approximate curve C1, it can be recognized that the number of transfer foreign substances satisfies the acceptable criterion. Therefore, the relational expression defined by equation 1 is derived.

(second embodiment)

As shown in fig. 11, a glass plate package body 21 according to a second embodiment of the present invention is formed by supporting a laminate 25 by a bracket 22, and the laminate 25 is formed by alternately laminating glass plates 23 and protective sheets 24 in a vertical posture. In the present embodiment, protective sheets 24 are disposed on the foremost surface and the rearmost surface of the laminate 25. In the figure, the X2 direction and the Y2 direction are orthogonal to each other.

Preferable examples of the thickness, size, density, and the like of the glass plate 23 are the same as those of the glass plate 3 described in the first embodiment.

Preferred examples of the thickness, size, material, and the like of the protective sheet 24 are the same as those of the protective sheet 4 described in the first embodiment. Preferably, the protective sheets 24 protrude laterally and upward in the width direction of the glass plate 23. Preferably, the lower edge position of the protective sheet 24 coincides with the lower edge position of the glass sheet 23. That is, it is preferable that the protective sheet 24 does not protrude below the glass sheet 23.

The bracket 22 includes a base portion 26 mounted on a floor surface or the like. In the present embodiment, the base portion 26 has a rectangular shape in a plan view.

The four side surfaces 26s of the base portion 26 are provided with fork portion holes 27 into which fork portions of the forklift are inserted.

The back receiving portion 28 is provided upright on the rear side of the upper surface 26u of the base portion 26. A main surface support portion (rear surface support portion) 29 that supports the rear surface 25b of the laminated body 25 (the main surface of the glass plate 23) from behind is provided on the front surface 28f of the back support portion 28. The main surface support portion 29 is inclined such that the upper portion is located rearward of the lower portion. The main surface support portion 29 has a laminated structure in which a rigid plate 30 and a cushion plate 31 are laminated, the rigid plate 30 being disposed on the back receiving portion 28 side (rear side), and the cushion plate 31 being disposed on the laminated body 25 side (front side). In the present embodiment, the cushion plate 31 has a multilayer structure in which the first cushion plate 32 and the second cushion plate 33 are laminated. Here, when the total thickness of the main surface supporting portions 29 is increased, the stacking space of the glass plates 23 is reduced, and the stacking efficiency of the glass plates 23 is lowered, and therefore, it is preferable that the total thickness of the main surface supporting portions 29 is 20mm or less.

A side support portion 34 is provided above the base portion 26 and in front of the back support portion 28 so as to be joined to the base portion 26 and/or the back support portion 28. The side support portion 34 supports the lower edge 251 of the laminated body 25 (the lower edge of the glass sheet 23) from below. In the present embodiment, the side support portion 34 is fixed only to the base portion 26, but may be fixed to both the base portion 26 and the back support portion 28, or may be fixed only to the back support portion 28, for example. In the latter case, the side support portion 34 may be separated from the base portion 26 in a state of being fixed to the back support portion 28.

Preferably, the angle α formed by the main surface supporting portion 29 and the vertical plane is 10 to 45 ° (18 ° in the present embodiment). Preferably, the angle β formed between the main surface support portion 29 and the side support portion 34 is 85 ° to 95 ° (90 ° in the present embodiment).

Although not shown in the drawings, the side surface pressure plate may be detachably attached using a stopper such as a screw in order to restrict the movement of the laminated body 25 in the width direction. Preferably, the side surface pressing plate has a mechanism capable of moving forward and backward with respect to the side surface 25s of the stacked body 25, and is configured to be capable of adjusting the position according to the width-direction dimension of the stacked body 25. Preferably, the side surface pressing plate abuts against the end edges of the protective sheets 24 protruding to both sides of the glass plate 23. In other words, it is preferable that the side press plate is not in direct contact with the glass plate 23. The side press plate may be omitted.

In the state of the glass plate package 1, a front surface pressing plate (not shown) is disposed on the front surface 25f of the laminated body 25 (the front surface of the protective sheet 24 on the frontmost surface in the present embodiment), and the laminated body 25 is held on the side support portion 34 and the main surface support portion 29 by pressing the front surface pressing plate against the back receiving portion 28 side with a fastening member such as a tape. For example, as disclosed in japanese patent application laid-open No. 2009-57051, the following configuration may be adopted: a plurality of pressure levers are arranged in parallel on the front surface of the front surface platen at intervals in the vertical direction so as to straddle in the lateral direction, and both end portions of each pressure lever protruding from the laminated body 25 are pressed toward the back receiving portion 28 side by a fastening member (a belt, a rod-shaped or tubular rod-shaped body capable of fixing the pressure lever at a predetermined position in the longitudinal direction). As the front surface pressing plate, for example, a cushion plate such as a foamed resin sheet having a larger wall thickness than the protective sheet 24 and having a high hardness can be used. In order to prevent dust from adhering to the glass plates 23 included in the laminate 25 in the state of the glass plate package 21, a resin stretchable film may be wound around the glass plate package 21 or a bag may be put on the package, if necessary.

Next, each element constituting the glass plate package body 21 will be described in detail.

As shown in fig. 12, the back receiving portion 28 is formed of a grid-shaped framework 28c, and the grid-shaped framework 28c is formed of a metal such as an aluminum alloy. In other words, the back receiving portion 28 has a plurality of holes 28h penetrating through the front and rear surfaces of the back receiving portion 28 at portions where the framework 28c is not present.

As shown in fig. 13, a rigid plate 30 is laid on the front surface 28f of the back receiving portion 28 so as to close the hole 28 h. The rigid plate 30 is divided into a plurality of small plates 30p in the plane direction. In the present embodiment, the rigid plate 30 is divided into three in the X2 direction (vertical direction). The rigid plate 12 may be divided in the Y2 direction (lateral direction (width direction)) perpendicular to the X2 direction, but in the present embodiment, it is continuous without being divided in the Y2 direction. The rigid plate 30 may be divided into a plurality of pieces in the Y2 direction in a state of being continuous without being divided in the X2 direction. Although a gap may be formed between the adjacent small plates 30p, in the present embodiment, the adjacent small plates 30p are in contact with each other without a gap therebetween. As the rigid plate 30, a metal plate such as an aluminum alloy or stainless steel (SUS) is preferably used. Preferably, the thickness of the rigid plate 30 is 2 to 20 mm.

As shown in fig. 14, a first cushion plate 32 is laid on the front surface 30f of the rigid plate 30. The first buffer plate 32 is divided into a plurality of small plates 32p in the plane direction. In the present embodiment, the first buffer plate 32 is divided into three in the X2 direction at the same position as the rigid plate 30. The division positions of the rigid plate 30 and the first buffer plate 32 may be the same or different. Although the first buffer plate 32 may be divided in the Y2 direction, it is not divided but continuous in the Y2 direction in the present embodiment. The first buffer plate 32 may be continuously divided in the X2 direction without being divided, and may be divided into a plurality of parts in the Y2 direction. Although a gap may be formed between the adjacent small plates 32p, in the present embodiment, the adjacent small plates 32p are in contact with each other without forming a gap therebetween. As the first buffer plate 32, for example, rubber, sponge rubber, resin, foamed resin, or silicone is preferably used. When the foamed resin is used as the first cushion plate 32, it is preferable to use a relatively hard foamed resin having an expansion ratio of 3 to 5 times. In the present embodiment, a polypropylene triple foamed resin is used. Preferably, the first buffer plate 32 has a thickness of 2 to 20 mm.

As shown in fig. 15, in a state where the rigid plate 30 and the first cushion plate 32 are laid on the back receiving portion 28, the peripheral edge portion (frame-shaped region) of each small plate 30p of the rigid plate 30 and the peripheral edge portion (frame-shaped region) of each small plate 32p of the first cushion plate 32 are supported from the rear by the framework 28c of the back receiving portion 28. In other words, the holes 28h of the back receiving portion 28 are not formed at positions corresponding to the peripheral edge portions of the small plates 30p of the rigid plate 30 and the peripheral edge portions of the small plates 32p of the first cushion plate 32.

As shown in fig. 16, the small plate 30p of the rigid plate 30 and the small plate 32p of the first buffer plate 32 are detachably fixed to the back receiving portion 28 by screws at predetermined positions, for example, at four corners. In the present embodiment, the small plate 30p of the rigid plate 30 and the small plate 32p of the first buffer plate 32 are screwed by the common screw 35. Specifically, a recess 36 is formed at the screw fixing position of the first buffer plate 32, and the head 35h of the screw 35 is received in the recess 36. That is, the tip of the head 35h of the screw 35 is retreated rearward from the front surface 32f of the first buffer plate 32. In this state, the shaft portion 35s of the screw 35 penetrates from the first cushion plate 32 to the back receiving portion 28 through the rigid plate 30. It is preferable that the screw fixing position is provided outside the region where the stacked body 25 is actually disposed.

As shown in fig. 17, a second cushion plate 33 is laid on the front surface 32f of the first cushion plate 32. The second buffer plate 33 is divided into a plurality of small plates 33p in the plane direction. In the present embodiment, the second buffer plate 33 is divided into four in the X2 direction. That is, the second buffer plate 33 has a larger number of divisions in the X2 direction than the first buffer plate 32. In the present embodiment, the dividing position of the second buffer plate 33 does not coincide with the dividing position of the first buffer plate 32. The number of divisions and the division positions of the second buffer plate 33 may be the same as those of the first buffer plate 32. Although the second buffer plate 33 may be divided in the Y2 direction, it is not divided but continuous in the Y2 direction in the present embodiment. The second buffer plate 33 may be continuously divided in the X2 direction without being divided, and may be divided into a plurality of parts in the Y2 direction. Although a gap may be formed between the adjacent small plates 33p, in the present embodiment, the adjacent small plates 33p are in contact with each other without forming a gap therebetween. As the second buffer plate 33, for example, rubber, sponge rubber, resin, foamed resin, silicone, or the like is preferably used. In the case where the foamed resin is used as the second cushion plate 33, it is preferable to use the foamed resin softer than the first cushion plate 32. In the present embodiment, a polyurethane foam is used. The second buffer plate 33 is fixed to the first buffer plate 32 by bonding, for example. Preferably, the thickness of the second buffer plate 33 is 2 to 20 mm. In the present embodiment, the thickness of the second buffer plate 33 is smaller than the thickness of the first buffer plate 32.

The stacked body 25 is disposed on the main surface supporting portion 29 configured as described above, that is, on the front surface of the second cushion plate 33. At this time, the glass plates 23 included in the laminate 25 have their main surfaces supported from the rear by the front surface of the second buffer plate 33, and their lower edges supported from below by the edge support portions 34. In this state, as shown in fig. 18, in the actual arrangement region of the laminated body 25 (the region corresponding to the rectangular region shown by the chain line in the drawing), there are a portion where the skeleton 28c of the back receiving portion 28 is present and a portion where the skeleton 28c is absent (the portion having the hole 28 h), but the main surface supporting portion 29 is configured to reinforce the cushion plate 31 by the rigid plate 30. Therefore, the rigidity of the main surface support 29 can be easily increased as compared with the case where the main surface support 29 is formed only by the cushion plate 31. Therefore, even if the main surface supporting portion 29 is made thin, the main surface supporting portion 29 can be suppressed from being bent at a position corresponding to the hole 28h of the back receiving portion 28. Further, since the rigid plate 30 is divided into the plurality of small plates 30p in the plane direction, even if vibration is generated in a part of the rigid plate 30 by an impact from the outside (for example, from the rear or from below), the vibration can be attenuated by the divided part, and the laminated body 25 can be prevented from being affected by the vibration.

Here, from the viewpoint of reducing the transfer of foreign matter (see fig. 9) contained in the protective sheet 24 onto the glass plate 23, it is preferable that the glass plate package body 21 further has the following configuration.

That is, it is preferable that the thickness of the glass plate 23 is T [ mm ]]D represents the thickness of each layer of the laminated structure constituting the main surface support 29₁、D₂…D_n[mm]The elastic modulus of each layer is defined as E₁、E₂…En[GPa]In the case of (2), the glass plate package body 21 satisfies the relationship defined by the above equation 2. This can reduce transfer of foreign matter to the glass plate 23 as much as possible.

Mathematical formula 2 is an equation derived through experiments. The basis for this is shown below.

The experiment was carried out as follows: the glass plates are stacked in a vertical posture on the carriers with the changed material and thickness of the main surface supporting part and then conveyed, and then the number of the foreign matter transfer printing of the glass plates of each carrier is counted. The detailed experimental conditions are as follows.

As the glass plate, the lateral dimensions: 2200mm, longitudinal dimension: OA-10G available from Nippon electric Nitri K.K. of 2500 mm. The thickness of the glass plate is four of 0.7mm, 0.5mm, 0.4mm and 0.3 mm. Glass plates of each thickness were placed vertically on each tray and stacked by the same weight, thereby producing a glass package. After each of the produced glass plate packages was carried by a truck along the same route of 200km, the packages were cleaned, and the number of foreign matters transferred to the surface of the glass plate, which were 1 μm or less, was counted by an image inspection apparatus. The foreign transfer material exceeding 1 μm is removed by cleaning. In consideration of the failure occurrence rate in the conventional manufacturing process of a liquid crystal display, the number of foreign matters transferred is determined as "good" when the number of foreign matters transferred is less than 100, and is determined as "bad" when the number of foreign matters transferred is 100 or more. The number of the transfer foreign matters is a value obtained by counting the number of the transfer foreign matters on each glass plate stacked on the carrier and dividing the total number of the transfer foreign matters on each glass plate by the number of the stacked glass plates, that is, an average value for each glass plate.

The sheet materials used in the main surface support portion of the bracket were expanded polypropylene (PP), rigid polyvinyl chloride (PVC), stainless steel sheet (SUS304), and aluminum sheet (Al), and the respective elastic modulus was PP: 1.5GPa, PVC: 4GPa, SUS: 200GPa, Al: 70 GPa. One or two or more different plate materials are selected from these plate materials and used for the main surface support portion. When two or more plate materials are selected, the selected plate materials are stacked to form a stacked structure (in which the buffer plate is on the upper surface side). Each layer constituting the main surface support portion is divided into three layers in the planar direction (see, for example, fig. 13 or 14).

The results of the above experiments are shown in table 2.

[ Table 2]

Fig. 19 is a graph in which the results of table 2 are graphed with the horizontal axis representing the glass sheet thickness and the vertical axis representing the rigidity-related value indicated on the left side of equation 2. In fig. 19, the case where the number of transfer foreign matters is acceptable is indicated as "o", and the case where the number of transfer foreign matters is not acceptable is indicated as "x".

From the results of fig. 19, an approximate curve C2 demarcating pass and fail was obtained. The approximate curve C2 is y ═ a/T + b. Here, T is a variable (thickness of the glass plate) on the horizontal axis, y is a variable (rigidity-related value of the main surface supporting portion) on the vertical axis, and a and b are constants. In the approximate curve C2 thus obtained, a is "801", b is "289", and the right side of equation 2 is obtained. As shown in fig. 19, in the region where the rigidity-related value of the main surface supporting portion is larger than the approximate curve C2, it can be recognized that the number of transfer foreign substances satisfies the acceptable criterion. Therefore, the derivation of equation 2 is defined as a relational expression. Here, it was confirmed through experiments that the relationship of the formula 2 maintains the angle between the main surface supporting portion and the vertical plane within the range of 13 to 23 °. On the other hand, it was confirmed through experiments that the angle formed by the main surface supporting portion and the side supporting portion does not directly affect the relationship of equation 2.

The bracket for a glass plate according to the embodiment of the present invention and the glass plate package using the same have been described above, but the embodiment of the present invention is not limited thereto, and various modifications can be made without departing from the scope of the present invention.

In the above embodiment, the case where the buffer plate is constituted by the first buffer plate and the second buffer plate has been described, but the buffer plate may be a single layer or a multilayer having three or more layers.

In the above-described embodiment, the case where the rigid plate and the first cushion plate are fixed to the base portion and the back receiving portion by screws and the second cushion plate is bonded to the first cushion plate has been described, but the method of fixing the layers constituting the main surface supporting portion is not particularly limited and any method may be employed. For example, all the layers constituting the main surface support portion may be bonded and fixed. Examples of the method of adhesion and fixation include double-sided tape, adhesive, and welding. Further, the layers constituting the main surface supporting portion may be fixed by a combination of these adhesion fixing method and screw fixing.

Description of reference numerals:

1 glass plate package body

2 bracket

3 glass plate

4 protective sheet

5 laminated body

6 base part

7 lower segment

8 upper section

8c skeleton

8h hole

9 support post

10 hole for fork

11 main surface support part

12 rigid plate

12p platelet

13 buffer board

14 first buffer plate

14p platelet

15 second buffer plate

15p platelet

16 side pressing plate

17 insertion opening

18 screw

21 glass plate package body

22 bracket

23 glass plate

24 protective sheet

25 laminated body

26 base part

27 hole for fork part

28 Back receiving part

28c skeleton

28h hole

29 main surface support part

30 rigid plate

30p platelet

31 buffer board

32 first buffer plate

32p platelet

33 second buffer plate

33p platelet

34 side support part

35 screws.

Claims

1. A glass plate bracket for packing a laminated body formed by flatly stacking a plurality of glass plates,

the bracket for glass plates is provided with:

a base portion composed of a lattice-shaped skeleton in which a plurality of holes are formed; and

a main surface support portion provided on an upper surface of the base portion and supporting a main surface of the glass plate of the laminate from below,

the main surface support portion has a laminated structure including a rigid plate and a buffer plate, the rigid plate is laid on an upper surface of the base portion so as to close the hole, the buffer plate is laid on an upper surface of the rigid plate,

the rigid plate is divided into a plurality of small plates in a plane direction, and end surfaces of adjacent small plates of the divided rigid plate are in contact with each other.

2. A carriage for glass sheets, according to claim 1,

the buffer plate is divided into a plurality of small plates in a plane direction.

3. A carriage for glass sheets according to claim 1 or 2,

the rigid plate and the cushion plate are detachably screwed to the base portion.

4. A carriage for glass sheets according to claim 1 or 2,

the skeleton of the abutment portion is provided along the peripheral edge portion of each of the small plates of the rigid plate.

5. A carriage for glass sheets according to claim 1 or 2,

the cushion plate has a laminated structure including a layer made of a foamed resin.

6. A glass plate package body is characterized in that,

the glass plate package body is formed by supporting a laminate, which is formed by stacking glass plates and protective sheets alternately in a flat manner, on a portion including the main surface supporting portion of the bracket for glass plates according to any one of claims 1 to 5.

7. The glass plate package of claim 6,

the thickness of the glass plate is set to be T [ mm ]]And D represents the thickness of each layer of the laminated structure constituting the main surface support portion₁、D₂…D_n[mm]The elastic modulus of each layer is defined as E₁、E₂…E_n[GPa]In the case of (a) in (b),

the relationship of (1) holds.

8. The glass plate package of claim 7,

the total thickness of the main surface support portions is 20mm or less.

9. The glass plate package according to claim 7 or 8,

the thickness of the glass plate is less than 0.5 mm.

10. A glass plate bracket for packing a laminated body formed by laminating a plurality of glass plates in a vertical posture,

the bracket for glass plates is provided with:

an abutment portion;

a back receiving portion rising from a rear side of the base portion and formed of a lattice-shaped skeleton having a plurality of holes formed therein;

a main surface support portion that is provided on a front surface of the back receiving portion and supports a main surface of the glass plate of the laminate from behind; and

a side support portion which is provided so as to be joined to the base portion and/or the back support portion and supports an edge of the glass plate of the laminate from below,

the main surface support portion has a laminated structure including a rigid plate and a cushion plate, the rigid plate being laid on a front surface of the back support portion so as to close the hole, the cushion plate being laid on a front surface of the rigid plate,

11. A carriage for glass sheets, according to claim 10,

12. A carriage for glass sheets according to claim 10 or 11,

the rigid plate and the cushion plate are detachably screwed to the back receiving portion.

13. A carriage for glass sheets according to claim 10 or 11,

the frame of the back receiving portion is provided along a peripheral edge portion of each of the small plates of the rigid plate.

14. A carriage for glass sheets according to claim 10 or 11,

15. A glass plate package body is characterized in that,

the glass plate package body is formed by supporting a laminate by a portion including the main surface support portion and the side support portion of the bracket for glass plates according to any one of claims 10 to 14, wherein the laminate is formed by laminating glass plates and protective sheets alternately in a vertical posture.

16. The glass plate package of claim 15,

the angle formed by the main surface supporting part and the vertical plane is 13-23 degrees,

the relationship of (1) holds.