TW202106582A - Glass-plate packing body - Google Patents

Abstract

A glass-plate packing body (1) is provided with: a glass-plate laminate body (2) in which a glass plate (4) and a protection sheet (5) are laminated together; a pallet (3) on which the glass-plate laminate body (2) is mounted; a stopper (12) that contacts a lateral part of the glass-plate laminate body (2); and a buffering member (13) that is interposed between the glass-plate laminate body (2) and the stopper (12). The buffering member (13) is provided with a first hard layer (18) that contacts the lateral part of the glass-plate laminate body (2) and a soft layer (20) that is arranged between the first hard layer (18) and the stopper (12).

Description

Glass plate packaging body

The present invention relates to a glass plate package formed by mounting a glass plate laminate formed by laminating glass plates and protective sheets on a pallet.

As we all know, the actual situation is that in recent years, various glass plates represented by glass substrates for flat panel displays (Flat Panel Displays, FPDs) such as liquid crystal displays have been increasing in size. As an example, in glass substrates for liquid crystal displays, those with a length of more than 2000 mm have become mainstream. Large glass plates are prone to breakage, so handling during packaging and transportation is extremely difficult, so special attention is paid to the packaging form.

As a packaging form of glass plates, a form in which a glass plate laminate is placed on a pallet in a flat posture (approximately horizontal posture) and packaged in this state is known. By placing the glass plate laminate in a flat posture, a plurality of glass plates are supported by surface contact. Therefore, the generation of stress concentration in the glass plate during transportation can be prevented, and the breakage of the glass plate can be suppressed.

In addition, as the conveying member of the glass plate package, air conveyance, sea conveyance, truck conveyance, or conveyance by a stacker can be mentioned. In all cases, the glass plate package continuously acts on the glass plate package in the upward and downward directions. Vibration or shock in the front-rear direction and the left-right direction. Therefore, the glass plate packaging body needs a structure that absorbs (buffers) vibration and impact and prevents the positional deviation of the glass plate laminate.

In this regard, Patent Document 1 discloses a glass plate package in which a glass plate support portion is arranged on a pallet, and a buffer body arranged on the upper surface of the glass plate support portion is attached to the glass plate support portion Multiple stoppers (pressing plates) on the side of the glass support the glass plate laminate.

In this glass plate package, by supporting the glass plate laminate by the buffer body arranged on the stopper support portion, vibration and impact during transportation can be reduced. In addition, by locking the side portions of the glass sheet laminate with a plurality of stoppers, it is possible to prevent the glass sheet laminate from shifting in the lateral position during transportation. [Prior Art Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. 2010-168072

[The problem to be solved by the invention] In the case of conveying the glass plate laminate by the conventional glass plate package, the stopper may be deformed by the pressing of the glass plate laminate. In this case, the stopper deforms in an inclined manner, so the amount of deformation of the upper part of the stopper is greater than the amount of deformation of the lower part. Along with the deformation of the stopper, the glass plate of a part (upper side) of the glass plate laminate may be shifted in position. In addition, the stopper may come into contact with the side wall portion of the container in which the glass plate package is accommodated, the glass plate package arranged side by side, the members arranged on the periphery, and the like.

In a state where the stopper is in contact with the side wall portion of the container, etc., the work of unloading the glass plate package from the container becomes difficult. In addition, in a state where the stopper is deformed, the work of loading the glass plate package into the container becomes difficult. Especially in the case of conveying a large glass plate, the gap between the side wall portion of the container and the glass plate package is small, so the above-mentioned problem becomes remarkable.

The present invention is made in view of the above circumstances, and its technical problem is to prevent the deformation of the stopper accompanying the positional shift of the glass plate laminate. [Means to solve the problem]

The present invention is used to solve the problem, and is a glass plate packaging body, which includes: a glass plate laminate, a laminated glass plate and a protective sheet; a pallet for loading the glass plate laminate; a stopper, and the The side portion of the glass plate laminate is in contact; and a buffer member is interposed between the glass plate laminate and the stopper. In the glass plate package, the buffer member includes: a first hard layer, and The side portion of the glass plate laminate is in contact; and the soft layer is disposed between the first hard layer and the stopper.

According to the above structure, when the glass plate laminate is shifted in the lateral direction during the transportation of the glass plate package, the soft layer shrinks, thereby preventing deformation of the stopper. In addition, since the first hard layer is arranged between the soft layer and the glass plate laminate, it is possible to prevent the soft layer from contacting the glass plate laminate. Thereby, the abrasion of the soft layer can be prevented, and the durability of the glass plate package can be improved.

The buffer member may also include a second hard layer disposed between the soft layer and the stopper. Thereby, the soft layer can be prevented from contacting with the stopper, thereby preventing the loss of the soft layer.

The first hard layer may also include a resin with a 25% compressive stress of 200 kPa or more and closed bubbles. Thereby, the hardness of the first hard layer in contact with the glass plate laminate can be optimized, and durability can be further improved.

The soft layer may also include a resin having a 25% compressive stress of 50 kPa or less and having closed cells. Thereby, in the case where the positional deviation of the glass plate laminate in the lateral direction occurs, the soft layer can be contracted to avoid deformation of the stopper.

The glass plate laminate can be mounted on the pallet in a flat posture. Here, when the stopper deforms in the glass plate package in the flat posture, the glass plate in a part (upper side) of the glass plate laminate is shifted in position. In this case, it is necessary to correct the positional deviation for each glass plate when sequentially taking out the glass plates using the package opening device. As a result, the value of the product has fallen and it cannot be shipped as a product. On the other hand, in the glass plate package, the positional deviation of the glass plate laminate is not the positional deviation (partial positional deviation) of only a part (upper side) of the glass plate, but the positional deviation of the glass plate laminate. The overall position shift. Therefore, it is only necessary to perform the correction of the positional deviation only once in the entire glass plate laminate, and it is not necessary to correct the positional deviation of each glass plate, and it is possible to suppress a decrease in the value of the product. [Effects of the invention]

According to the present invention, it is possible to prevent the deformation of the stopper caused by the positional deviation of the glass plate laminate.

Hereinafter, a mode for implementing the present invention will be described with reference to the drawings. 1 to 4 show an embodiment of the glass plate package of the present invention.

As shown in FIGS. 1 and 2, the glass plate package 1 includes a glass plate laminate 2 and a pallet 3 on which the glass plate laminate 2 is placed.

The glass plate laminate 2 is mounted on the pallet 3 in a substantially horizontal horizontal posture. In the present embodiment, the "horizontal posture" means that the glass plate laminate 2 mounted on the pallet 3 is arranged at an angle of 0° to 17° with respect to the horizontal direction.

The glass plate laminate 2 is constituted by alternately laminating a plurality of glass plates 4 and protective sheets 5. The size of the glass plate 4 is not particularly limited. In this embodiment, a case where the glass plate 4 of G8.6 is mounted on the pallet 3 is illustrated. The size of the glass plate 4 in this case is, for example, 2250 mm×2300 mm. The protective sheet 5 is a rectangular sheet having a larger area than the glass plate 4. The protective sheet 5 includes, for example, paper or resin sheet.

The pallet 3 includes a base portion 6 and a glass support portion 7 arranged on the upper portion of the base portion 6.

The base part 6 is a member containing a metal such as aluminum alloy or stainless steel and having a rectangular shape in a plan view. At each corner of the base portion 6, there are provided pillars 8 for supporting the glass plate package 1 in the upper stage when the glass plate package 1 is stacked in multiple stages. An opening 9 through which a fork of the stacker is inserted is formed on the side of the base portion 6.

The width dimension (inside dimension) of the container (dry container) storing the glass plate package 1 is 2352 mm. In the pallet 3, the dimension of one side corresponding to the width direction of the container is smaller than the width dimension.

The glass support part 7 is a rectangular-shaped part containing metal, such as an aluminum alloy. The longitudinal dimension, lateral dimension, and height direction dimension of the glass support part 7 are set to be smaller than those of the base part 6. The glass support part 7 is arrange|positioned on the upper surface part of the base part 6 in the state which restrict|limits the movement in a horizontal direction, and allows the movement in the up-down direction. On the upper surface part of the glass support part 7, the buffer body 11 which supports the lower surface of the glass plate laminated body 2 is mounted.

A stopper 12 that restricts the lateral movement of the glass plate laminate 2 is provided on the side of the glass support portion 7. A buffer member 13 is provided between the stopper 12 and the glass plate laminate 2. The stoppers 12 and the buffer members 13 are arranged two each on each side of the glass plate laminate 2 having a quadrangular shape in a plan view, but the number is not limited to this embodiment.

The stopper 12 includes, for example, a metal plate. The stopper 12 includes a base 14, a support 15 supporting the buffer member 13, and a connecting part 16 connecting the base 14 and the support 15.

The base portion 14 is fixed to the side portion of the glass support portion 7 by a fixing member 17 such as a bolt. The supporting portion 15 has a supporting surface 15 a in contact with the buffer member 13. The connecting portion 16 connects the two in a state where the supporting portion 15 is separated from the base portion 6 in the thickness direction thereof, so that a space for arranging the buffer member 13 is formed between the supporting portion 15 and the glass plate laminate 2.

In the state in which the glass plate package 1 is housed in the container, a gap S1 is formed between the support part 15 and the side wall part 10 of the container (refer to FIG. 2 ). The size of the gap S1 varies depending on the size of the glass plate 4, and may be 10 mm to 50 mm, and sometimes 10 mm to 30 mm.

The buffer member 13 includes a first hard layer 18, a second hard layer 19, and a soft layer 20. The layers 18 to 20 are integrally adhered, for example, by an adhesive, but the present invention is not limited to this, and the layers 18 to 20 may be in a state of being in contact with each other without adhesion (integration) of the layers 18 to 20.

As shown in FIG. 2, the first hard layer 18 faces the side of the glass plate laminate 2. The second hard layer 19 is disposed between the soft layer 20 and the supporting portion 15 of the stopper 12. The second hard layer 19 is fixed to the supporting surface 15a of the supporting portion 15 by, for example, a double-sided tape or the like. Thereby, compared with the case where the soft layer 20 is fixed to the support surface 15a, the cushioning member 13 can be fixed to the support surface 15a more firmly. It is not limited to this structure, and the second hard layer 19 may be in a contact state without being fixed to the support surface 15a.

The 25% compressive stress of the first hard layer 18 and the second hard layer 19 is preferably 200 kPa or more, 300 kPa or less, and more preferably 250 kPa or more. The first hard layer 18 and the second hard layer 19 include resin having closed cells, such as polyolefin foam, but are not limited to this structure. The first hard layer 18 and the second hard layer 19 may also include different resins.

The soft layer 20 is disposed between the first hard layer 18 and the supporting portion 15 (the second hard layer 19) of the stopper 12. The 25% compressive stress of the soft layer 20 is preferably 10 kPa or more and 50 kPa or less, and more preferably 30 kPa or less. The soft layer 20 contains a resin having closed cells, such as a polyolefin foam, but is not limited to this structure.

The thickness dimension of the buffer member 13 is preferably set to 12 mm to 17 mm. The thickness dimension of the first hard layer 18 and the second hard layer 19 is preferably set to be smaller than the thickness dimension of the soft layer 20. The thickness dimension of the first hard layer 18 is preferably set to 2 mm to 6 mm. The thickness dimension of the second hard layer 19 is preferably set to 2 mm to 6 mm. The thickness dimension of the soft layer 20 is preferably set to 5 mm to 12 mm.

3 and 4 show the state of the glass plate package 1 when the glass plate laminate 2 has a positional shift. In FIGS. 3 and 4, the direction in which the position of the glass plate laminate 2 is shifted is indicated by the symbol X.

When the glass plate laminate 2 moves in the lateral direction, the buffer member 13 at the moving destination is pressed by the side of the glass plate laminate 2. In this case, the pressing force of the glass plate laminate 2 acts on the soft layer 20 via the first hard layer 18. The soft layer 20 shrinks by the pressing force.

Since the soft layer 20 shrinks in accordance with the moving distance of the glass plate laminate 2, a load capable of deforming the support portion 15 does not act on the stopper 12. Therefore, even when the glass plate laminate 2 has a positional deviation, the deformation of the support portion 15 is prevented. Therefore, the gap S1 between the support portion 15 of the stopper 12 and the side wall portion 10 of the container is maintained constant without being reduced. Thereby, in the state where the glass plate package 1 is accommodated in a container, it can prevent reliably that the support part 15 of the stopper 12 contacts the side wall part 10 of a container.

When the glass plate laminate 2 (glass plate 4) is taken out from the pallet 3, the soft layer 20 of the buffer member 13 contracted by the pressing of the glass plate laminate 2 is restored to its original state. Therefore, the buffer member 13 can be used repeatedly together with the stopper 12.

In addition, this invention is not limited to the structure of the said embodiment, and it is not limited to the said effect. The present invention can be modified in various ways without departing from the gist of the present invention.

In the above-described embodiment, an example of a three-layer structure in which the cushioning member 13 is the first hard layer 18, the second hard layer 19, and the soft layer 20 is shown, but the present invention is not limited to this structure. The buffer member 13 may also include, for example, two layers of the first hard layer 18 and the soft layer 20.

In the above-mentioned embodiment, the glass plate package 1 in which the glass plate laminate 2 is mounted on the pallet 3 in a flat posture is illustrated, but the present invention is not limited to this structure. The present invention can also be applied to a glass plate package 1 in which a glass plate laminate 2 is mounted on a pallet 3 in a vertical posture.

In the above-mentioned embodiment, the cushioning member 13 in which the one-layer soft layer 20 is arranged between the first hard layer 18 and the second hard layer 19 is illustrated, but the present invention is not limited to this structure. The soft layer 20 may include multiple layers, or an additional hard layer may be arranged between the multiple soft layers.

1: Glass plate packaging body 2: Glass plate laminate 3: Pallet 4: glass plate 5: Protective film 6: Abutment 7: Glass support 8: Pillar 9: Opening 10: Side wall 11: Buffer 12: Stopper 13: Cushioning member 14: Base 15: Support Department 15a: Support surface 16: connection part 17: Fixed components 18: The first hard layer 19: The second hard layer 20: Soft layer S1: gap X: The direction in which the position of the glass plate laminate 2 is shifted

Fig. 1 is a perspective view of the glass plate package of the present invention. Fig. 2 is a cross-sectional view of a glass plate package. Fig. 3 is a cross-sectional view of a glass plate package. Fig. 4 is a side view of a stopper and a buffer member.

1: Glass plate packaging body

2: Glass plate laminate

3: Pallet

4: glass plate

5: Protective film

6: Abutment

7: Glass support

9: Opening

10: Side wall

11: Buffer

12: Stopper

13: Cushioning member

14: Base

15: Support Department

15a: Support surface

16: connection part

17: Fixed components

18: The first hard layer

19: The second hard layer

20: Soft layer

S1: gap

Claims (5)

A glass plate packaging body, including: Glass plate laminates, laminated with glass plates and protective sheets; A pallet for loading the glass plate laminate; A stopper in contact with the side of the glass plate laminate; and The buffer member is interposed between the glass plate laminate and the stopper, and the glass plate package is characterized by: The buffer member includes: a first hard layer in contact with the side of the glass plate laminate; and a soft layer arranged between the first hard layer and the stopper. The glass plate package according to claim 1, wherein The buffer member includes a second hard layer disposed between the soft layer and the stopper. The glass plate package as described in claim 1 or 2, wherein The first hard layer includes a resin with a 25% compressive stress of 200 kPa or more and closed cells. The glass plate package according to any one of claims 1 to 3, wherein The soft layer includes a resin having a 25% compressive stress of 50 kPa or less and having closed cells. The glass plate package according to any one of claims 1 to 4, wherein The glass plate laminate is mounted on the pallet in a flat posture.

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