WO2020129764A1

WO2020129764A1 - Glass plate packaging pallet and glass plate packaging body

Info

Publication number: WO2020129764A1
Application number: PCT/JP2019/048403
Authority: WO
Inventors: 勢津夫内田; 三宅　幸雄
Original assignee: 日本電気硝子株式会社
Priority date: 2018-12-17
Filing date: 2019-12-11
Publication date: 2020-06-25
Also published as: JP7470293B2; JPWO2020129764A1; TW202037541A; CN215624146U

Abstract

This glass plate packaging pallet 3 is provided with: a base part 4 for accommodating thereon a glass plate stacked body 2 in which a plurality of sheets of glass plates G are stacked in a vertical attitude with protective sheets P therebetween; a bottom side support part 5 for supporting the bottom side of the glass plate stacked body 2; and a rear surface support part 6 for supporting the rear surface of the glass plate stacked body 2. The bottom side support part 5 is provided with a cushioning material 7 removably arranged between the base part 4 and the glass plate stacked body 2 without being adhered therebetween.

Description

Glass plate packing pallet and glass plate packing

The present invention relates to a glass plate packing pallet and a glass plate packing body.

When transporting various glass plates including glass substrates for flat panel displays such as liquid crystal displays, glass plate packing pallets are used.

This type of pallet has, as a basic structure, a base part in which a glass plate laminated body in which a plurality of glass plates are vertically stacked and a protective sheet (such as interleaving paper) is housed above, A bottom support portion that supports the bottom side of the glass plate laminate and a back support portion that supports the back side of the glass plate laminate are provided.

Among these, the bottom support part is equipped with a cushioning material at the part where the bottom of the glass plate stack comes into contact with, in order to prevent the glass plates from being damaged by impact or vibration. The cushioning material is fixed to a metal plate or the like that constitutes the base body of the bottom support portion with an adhesive (see, for example, Patent Document 1).

JP, 2010-269820, A

However, if the cushioning material is fixed with an adhesive, the adhesive may peel off or volatilize, and a contamination source derived from the adhesive may adhere to the glass plate. In particular, if a contamination source derived from an adhesive agent enters between the laminated glass plates, it easily adheres strongly to the surface of the glass plate due to the weight of the glass plate. Therefore, it is often difficult to remove the contamination source derived from such an adhesive from the glass plate by cleaning, and there is a problem that it may become a defect of the glass plate.

Also, if the same cushioning material is reused in multiple transportations, the cushioning performance of the cushioning material will inevitably decrease. Therefore, it is necessary to replace the cushioning material with a certain frequency, but if the cushioning material is fixed with an adhesive, the cushioning material cannot be easily separated from, for example, the metal plate material to which the cushioning material is fixed. As a result, there is a problem in that only the cushioning material cannot be replaced practically and the maintainability is very poor.

An object of the present invention is to provide a glass plate packing pallet and a glass plate packing body that have good maintainability while preventing contamination of the glass plate.

As a result of earnest research, the inventor of the present application has found that, even if a cushioning material that has been conventionally fixed by an adhesive is simply placed in a separable manner without using an adhesive, the cushioning material is formed by the weight of the glass plate laminate. It was found that the positional deviation of the above was suppressed, and the present invention was devised.

The glass plate packing pallet according to the present invention has a base part in which a glass plate laminate in which a plurality of glass plates are laminated in a vertical posture via a protective sheet is accommodated, and a bottom of the glass plate laminate. A bottom side supporting part that supports the back side of the glass plate laminate, and a back side supporting part that supports the back side of the glass plate laminate, and the bottom side supporting part is bonded to the base part between the base part and the glass plate laminate. It is characterized in that it is provided with a cushioning material which is arranged so as to be separable.

By doing this, since the cushioning material is not bonded, it is possible to prevent the glass plate from being contaminated by the adhesive. Further, since the cushioning material is separable, it is easy to replace the cushioning material and maintainability is improved.

In the above structure, it is preferable that the bottom supporting portion supports the bottom of the glass plate laminate such that both widthwise end portions of the bottom of the glass plate protrude from the supporting surface of the bottom supporting portion.

By doing this, the widthwise ends of the bottom of the glass plate, that is, the corners on both sides in the widthwise direction, do not contact the bottom support. As a result, it is possible to prevent the glass plate from being damaged by the corner portions of the glass plate being caught by the bottom support portion during transportation.

In the above structure, it is preferable that the bottom support portion further includes a cardboard that is separably disposed between the cushioning material and the glass plate laminate without being bonded to the cushioning material.

If the cushioning material and the glass plate come into direct contact, glass powder may adhere to the cushioning material. When the glass powder adheres to the cushioning material as described above, it is difficult to completely remove the glass powder. As a result, glass powder that causes contamination of the glass plate is generated from the cushioning material, and the cushioning material cannot be reused. On the other hand, when the cardboard is arranged between the cushioning material and the glass plate laminate as in the above-described configuration, the cushioning material and the glass plate do not come into direct contact with each other, so that the glass powder is prevented from adhering to the cushioning material. It can be prevented. Therefore, the expensive cushioning material can be repeatedly used by transportation a plurality of times. Here, it is conceivable to dispose a slip sheet instead of the cardboard between the cushioning material and the glass plate laminate, but since the slip sheet is easily broken by contact with the glass plate, Glass powder may adhere. On the other hand, since the cardboard is unlikely to break like interleaving paper, it is possible to reliably prevent the glass powder from adhering to the cushioning material.

When the bottom support portion is provided with cardboard, both ends in the width direction at the bottom of the glass plate may protrude from the cardboard, and both ends of the cushioning material in the width direction may protrude from the glass plate. preferable.

If cardboard and cushioning material are prepared for each size of glass plate, it is possible to support the glass plates of different sizes without contacting both ends of the glass plate with the bottom support portion, but this may increase the cost. There is. On the other hand, as described above, by using a cushioning material such that both ends of the cushioning material protrude from the glass plate, it is possible to reduce the cost depending on the size of the glass sheet without preparing the cushioning material for each size of the glass sheet. By simply cutting the cardboard, it is possible to support both ends of the glass plate free. Therefore, both ends of the glass plate can be freed and supported while suppressing an increase in cost.

In the above structure, it is preferable that the cushioning material includes a foamed resin material.

In this case, it is preferable that the foaming ratio of the foamed resin material is 10 to 40 times.

By doing this, it is possible to achieve both a moderate cushioning property for the glass plate and a good thickness recovery property. That is, if the foaming ratio of the foamed resin material is less than 10 times, the foamed resin material tends to be too hard, and the desired cushioning property may not be obtained. On the other hand, when the foaming ratio of the foamed resin sheet exceeds 40 times, the foamed resin material tends to be too soft, which makes it difficult to handle due to the glass plate bouncing during the packaging work, and the thickness recovery property Deterioration may make reuse difficult. Therefore, if the expansion ratio is within the above numerical range, such a problem can be avoided.

Further, it is preferable that the cushioning material further contains a rubber material together with the foamed resin material.

By doing this, since the cushioning material contains the foamed resin material and the rubber material, it is possible to absorb various shocks and vibrations according to the respective shock/vibration absorbing performance.

The glass plate packaging body according to the present invention, which was devised to solve the above-mentioned problems, is characterized in that the glass plate laminated body is packaged in a glass plate packaging pallet having the above-mentioned configuration as appropriate.

By doing this, it is possible to enjoy the same effects as the corresponding configuration already described.

As described above, according to the present invention, it is possible to provide a glass plate packing pallet and a glass plate packing body that have good maintainability while preventing contamination of the glass plate.

It is a perspective view of the glass plate package which concerns on 1st embodiment of this invention. It is a side view of the glass plate package of FIG. It is a perspective view which shows the state which fixed the glass plate laminated body in the glass plate package of FIG. It is a perspective view of the glass plate package which concerns on 2nd embodiment of this invention. It is a front view of the glass plate package shown in FIG. It is a perspective view of the glass plate package which concerns on 3rd embodiment of this invention. It is a front view of the glass plate package shown in FIG.

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

(First embodiment)
As shown in FIGS. 1 and 2, the glass plate packaging body 1 according to the first embodiment includes a glass plate laminated body 2 and a glass plate packaging pallet 3.

The laminated body 2 is formed by alternately laminating a plurality of glass plates G and protective sheets P in a vertical posture (inclined posture in this embodiment). In the present embodiment, both the glass plate G and the protective sheet P have a rectangular shape, and the protective sheet P is arranged on the frontmost side and the rearmost side of the laminated body 2.

The weight of the laminated body 2 is, for example, 200 kg to 3800 kg. The number of glass plates G is, for example, 200 to 400. The size of the glass plate G is, for example, 730 mm×920 mm to 2250 mm×2600 mm, and the thickness of the glass plate G is, for example, 300 μm to 1100 μm. The glass plate G is, for example, a glass substrate for a flat panel display.

Protective sheet P is, for example, interleaving paper (pure pulp paper) or foamed resin sheet. The size of the protective sheet P is larger than that of the glass plates G so that the glass plates G do not come into direct contact with each other. That is, the protective sheet P may protrude to the lateral side and/or the upper side of the glass plate G in the width direction. However, from the viewpoint of preventing a work error of the device for loading and unloading the glass plates G, it is preferable that the protective sheet P not protrude below the glass plates G.

The pallet 3 includes a base portion 4 in which the laminated body 2 is housed above, a bottom side supporting portion 5 that supports the bottom side of the laminated body 2 on a plane, and a back surface supporting portion 6 that supports the back surface of the laminated body 2 on a plane. , Are provided.

The base part 4 is formed of a metal frame such as stainless steel, carbon steel, or aluminum alloy.

The bottom support portion 5 includes a cushioning material 7 placed on the upper surface of the base portion 4, and a cardboard 8 placed on the upper surface of the cushioning material 7. In the present embodiment, the cushioning material 7 is adapted to support the entire width of the bottom side of the glass plate G included in the laminated body 2. The protruding portion on the bottom side of the protective sheet P protruding to both sides of the glass plate G may or may not be supported by the buffer material 7.

The cushioning material 7 is separably arranged without being adhered to the upper surface of the base portion 4, and the cardboard 8 is separably arranged without being adhered to the upper surface of the cushioning material 7. That is, there is no contact layer between the base 4 and the cushioning material 7, both 4 and 7 are in direct contact with each other, and there is no adhesive layer between the cushioning material 7 and the cardboard 8. , Both 7 and 8 are in direct contact.

The cushioning material 7 includes a foamed resin plate (foamed resin material) 9 and a rubber plate (rubber material) 10 placed on the upper surface of the foamed resin plate 9. The foamed resin plate 9 and the rubber plate 10 are separably laminated without being adhered to each other. That is, there is no adhesive layer between the foamed resin plate 9 and the rubber plate 10, and both 9 and 10 are in direct contact with each other. In the present embodiment, the foamed resin plate 9 and the rubber plate 10 are each a single plate member continuous in the width direction of the laminate 2.

The foamed resin plate 9 is formed of, for example, foamed polypropylene, foamed urethane, foamed styrene, foamed melamine as a main material. In this embodiment, the foamed resin plate 9 is a foamed polypropylene plate. The expansion ratio of the foamed resin plate 9 is preferably 10 to 40 times. The foamed resin plate 9 preferably has a thickness of, for example, 10 mm to 30 mm.

The rubber plate 10 is made of, for example, natural rubber and has a type A durometer hardness of 50 to 70. The thickness of the rubber plate 10 is preferably 2 mm to 10 mm, for example. Since the cushioning material 7 includes the foamed resin plate 9 and the rubber plate 10 in this manner, it is possible to absorb a wide range of shocks and vibrations according to the respective shock/vibration absorbing performances. Further, the rubber plate 10 can be expected to have an effect of reducing the compressive deformation of the foamed resin plate 9. From the viewpoint of efficiently absorbing impact and vibration, the thickness of the rubber plate 10 is preferably smaller than the thickness of the foamed resin plate 9. The rubber plate 10 may be omitted.

The cardboard 8 is made of cardboard such as chip cardboard, and also includes a form of corrugated cardboard having a multilayer structure of cardboard. In the present embodiment, the cardboard 8 is a single plate material that is continuous in the width direction of the laminate 2. When the cardboard 8 has a single layer structure, the thickness of the cardboard 8 is preferably, for example, 0.5 mm to 2 mm. The cardboard 8 is in direct contact with the bottom side of the glass plate G included in the laminated body 2 and plays a role of protecting the cushioning material 7 from glass powder. That is, for example, the cardboard 8 is discarded once it is used for transportation, but the cushioning material 7 (particularly the foamed resin plate 9) is used for transportation a plurality of times and the cushioning performance (thickness recoverability, etc.). Replace it when it drops. Since the cardboard 8 is cheaper than the cushioning material 7, replacement of the cardboard 8 each time does not significantly increase the cost. The cardboard may be omitted.

The back support part 6 includes a back part 11 standing upright from the base part 4, and a cushioning material 12 provided on the front surface of the back part 11. In the present embodiment, the cushioning material 12 is adapted to support the entire back surface of the glass plate G included in the laminated body 2. The protruding portion of the protective sheet P protruding from the glass plate G may or may not be supported by the cushioning material 12.

The back part 11 is formed of a metal frame such as stainless steel, carbon steel, or aluminum alloy.

The cushioning material 12 is separably laminated without being adhered to the front surface of the back surface portion 11. That is, there is no adhesive layer between the back surface portion 11 and the cushioning material 12, and the two 11 and 12 are in direct contact with each other. The movement of the cushioning material 12 may be restricted by providing the back surface portion 11 with the projection portion and providing the cushioning material 12 with a hole portion that fits with the projection portion.

The cushioning material 12 is formed of, for example, a rubber plate, a foamed resin plate, or a laminated body of these. Examples of the foamed resin plate include those formed mainly of foamed polypropylene, foamed urethane, foamed styrene, foamed melamine and the like. In the present embodiment, the cushioning material 12 is a foamed polypropylene plate.

The upper surface of the bottom support portion 5, that is, the upper surface of the cardboard 8 is inclined at a predetermined angle θ1 (for example, 5° to 25°) with respect to the horizontal direction so as to move upward as the distance from the rear support portion 6 increases. ing. Further, the front surface of the back surface support portion 6, that is, the front surface of the cushioning material 12 is oriented at a predetermined angle θ2 (for example, 5° to 25°) with respect to the vertical direction so as to move rearward as the distance from the bottom side support portion 5 increases. It is inclined. At this time, the front surface of the back surface support portion 6 is, for example, substantially perpendicular to the upper surface of the bottom side support portion 5.

The package 1 having the above configuration is shipped (transported) in a state where the laminated body 2 is fixed to the pallet 3 by a predetermined fixing means, for example. The fixing means is not particularly limited, but as shown in FIG. 3, a belt 13 for constraining the laminated body 2, and a pressing member 14 arranged between the belt 13 and the front surface of the laminated body 2, It is possible to use the one provided with the side stopper 15 arranged between the belt 13 and the side portion of the laminated body 2. For example, as shown in FIG. 1, both ends of the belt 13 in the longitudinal direction are hooked on hooks 16 provided on the back support portion 6 in a state where the laminated body 2 is accommodated in a predetermined position on the pallet 3 in a vertical posture. In the doubled state, it is fixed on the front surface of the pressing member 14 in a tightened state by a ratchet or the like not shown. As a result, the stacked body 2 is fixed to the pallet 3 in a state in which the movement in the front, rear, left, and right directions is restricted.

At this time, as shown in FIG. 3, the frame plate 17 is placed on the forefront side of the laminated body 2, and the frame plate 17, the laminated body 2, and the pressing member 14 are attached to the backside support portion 6 side by the belt 13. You may press. Further, in order to prevent dust from adhering to the laminated body 2, the laminated body 2 may be covered with a protective bag or a protective film may be wound.

According to the pallet 3 and the package 1 having the above configuration, since the adhesive is not used in the bottom support 5 and the back support 6, the glass plate G included in the laminate 2 is contaminated by the adhesive. It is possible to reliably prevent such a situation. Here, since the bottom support portion 5 is liable to generate a contamination source derived from the adhesive due to vibration or impact, the above configuration without the adhesive is particularly useful.

Further, since the cushioning material 7 of the bottom support portion 5 and the cushioning material 12 of the back support portion 6 are separable from each other, when the cushioning performance of the

cushioning materials

7, 12 is reduced, only the

cushioning materials

7, 12 can be easily used. Can be exchanged for. Here, since the bottom support portion 5 is likely to receive the load of the laminated body 2 and the cushioning performance of the cushioning material 7 (particularly the foamed resin plate 9) is likely to decrease, the cushioning material 7 (the foamed resin plate 9 and/or the rubber plate). The above configuration in which only 10) can be easily replaced is particularly useful.

Furthermore, since the cushioning material 7 of the bottom support portion 5 and the cushioning material 12 of the back support portion 6 are separable from each other, even if the size of the glass plate G is changed, the

cushioning materials

7 and 12 are arranged. Since the degree of freedom of the mode is high, it is easy to realize an optimal support mode according to the size of the glass plate G.

(Second embodiment)
As shown in FIGS. 4 and 5, the glass plate package 1 according to the second embodiment differs from the glass plate package 1 according to the first embodiment in the structure of the bottom support portion 5. In the following, only the differences from the first embodiment will be described, and the common points with the first embodiment will be denoted by the same reference numerals in the drawings, and overlapping description will be omitted.

As shown in the figure, in the glass sheet package 1 according to the second embodiment, the widthwise dimension of the bottom support portion 5 is smaller than the widthwise dimension of the glass sheet G included in the laminate 2. That is, the corners of the bottom side of the glass plate G (both ends in the width direction of the bottom side) project laterally from the bottom side supporting portion 5. Here, the widthwise dimension of the bottom support portion 5 means the widthwise dimension of the portion of the bottom support portion 5 that is in direct contact with the bottom of the glass plate G (the support surface of the bottom support portion 5). That is, in the present embodiment, it means the widthwise dimension of the cardboard 8. In the present embodiment, of the bottom side of the glass plate G, the central portion in the width direction excluding the corners is continuously supported in the width direction by the bottom support portion 5. The width direction here may be the traveling direction during transportation. Further, in the present embodiment, the support surface of the bottom support portion 5 is the uppermost surface of the bottom support portion 5.

By doing this, the corner portion of the bottom side of the glass plate G does not contact the bottom support portion 5. As a result, it is possible to prevent the corners of the bottom of the glass plate G from being caught by the bottom support portion 5 and being damaged during transportation.

When the corner portion of the bottom side of the glass plate G protrudes from the supporting surface of the bottom side supporting portion 5 as in the second embodiment, the foaming ratio of the foamed resin plate 9 is preferably 10 to 40 times, and 20 to It is more preferably 40 times. When the expansion ratio is set to 10 to 40 times, as described above, both the appropriate cushioning property for the glass plate and the good thickness recoverability can be achieved. When the corner of the bottom side of the glass plate G protrudes from the bottom support portion 5, the glass plate G is likely to move due to vibration or shock during transportation. If the expansion ratio is 20 times or more, the absorption of vibrations and shocks is improved, and the movement of the glass plate G can be reduced, so that the increase of dirt on the glass plate G can be suppressed.

The width D at which the corner of the bottom of the glass plate G protrudes from the support surface of the bottom support 5 (cardboard 8 in this embodiment) is preferably, for example, 10 mm to 50 mm. When the protruding width D is less than 10 mm, the corners of the bottom of some of the glass plates G are insufficient when the positioning accuracy of the packaging device that alternately stacks the glass plates G and the protective sheets P on the pallet 3 is insufficient. May contact the bottom support portion 5. On the other hand, as the protruding width D increases, the glass plate G tends to move due to vibration or shock during transportation, and the dirt on the glass plate G tends to increase. Therefore, the protruding width D should be small. Is preferable, for example, 50 mm or less is preferable, 40 mm or less is more preferable, and 30 mm or less is most preferable.

(Third embodiment)
As shown in FIGS. 6 and 7, the glass plate packaging body 1 according to the third embodiment differs from the glass plate packaging body 1 according to the second embodiment in that both ends in the width direction of the bottom side of the glass plate G. The point is that the part protrudes from the cardboard 8 and both ends in the width direction of the cushioning material 7 protrude from the glass plate G.

In other words, in the second embodiment, the case where the widthwise dimensions of the cardboard 8 and the cushioning material 7 are smaller than the widthwise dimensions of the glass plate G (see FIGS. 4 and 5) has been exemplified. In the third embodiment, the widthwise dimension of the cardboard 8 is smaller than the widthwise dimension of the glass plate G, while the widthwise dimension of the cushioning material 7 is larger than the widthwise dimension of the glass plate G.

If the cardboard 8 and the cushioning material 7 are prepared for each size of the glass plate G, both ends of the glass plate G are made free without contacting the bottom corners of the glass plates G of different sizes with the bottom support part 5. Although it is possible to support it, a plurality of types of cushioning materials 7 which are more expensive than the cardboard 8 are required, which may increase the cost. On the other hand, if the cushioning material 7 that protrudes from both ends of the cushioning material 7 from the glass plate G is used as in the present embodiment, the cushioning material 7 is not prepared for each size of the glass sheet G, and It is possible to support both ends of the glass plate G by simply cutting the inexpensive cardboard 8 according to the size of G. Therefore, both ends of the glass plate G can be freed and supported while suppressing an increase in cost.

The present invention is not limited to the configurations of the above-described embodiments, and is not limited to the above-described operational effects. The present invention can be variously modified without departing from the scope of the present invention.

In the above embodiment, the case where the rubber plate 10 is arranged on the upper surface of the foamed resin plate 9 as the cushioning material 7 of the bottom support portion 5 has been described, but the rubber plate 10 is arranged only on the lower surface of the foamed resin plate 9. Alternatively, the rubber plates 10 may be arranged on the upper and lower surfaces of the foamed resin plate 9, respectively. When the rubber plates 10 are arranged on the upper and lower surfaces of the foamed resin plate 9, respectively, the rubber plate 10 arranged on the upper surface side of the foamed resin plate 9 and the rubber plate 10 arranged on the lower surface side of the foamed resin plate 9 are The thickness and material may be different.

In the above embodiment, the case where the foamed resin plate 9 is composed of one foamed resin plate 9 has been described, but the foamed resin plate 9 may have a structure in which a plurality of foamed resin plates are laminated. In this case, the plurality of foamed resin plates 9 may be directly laminated or may be laminated via a rubber material as long as they can be separated without being adhered to the base portion 4.

In the above embodiment, the bottom side of the glass plate G is continuously supported in the width direction by the bottom support portion 5, but a plurality of bottom sides of the glass plate G are intermittently supported in the width direction by the bottom support portion 5. You may support it. In the case of intermittent support, the cardboard 8, the foamed resin plate 9, and the rubber plate 10 are strip-shaped, and therefore their desired functions may be impaired due to misalignment during the loading process or transportation. From the viewpoint of preventing this, it is preferable that the bottom side of the glass plate G is continuously supported by the bottom support portion 5 in the width direction.

1 Glass Plate Packing Body 2 Glass Plate Laminated Body 3 Glass Plate Packing Pallet 4 Base Part 5 Bottom Support 6 Back Support 7 Buffer Material 8 Cardboard 9 Foam Resin Plate 10 Rubber Plate 11 Back Part 12 Buffer Material G Glass Plate P protection sheet

Claims

A base part in which a glass plate laminated body in which a plurality of glass plates are laminated in a vertical posture via a protective sheet is accommodated above, a bottom side supporting part supporting a bottom side of the glass plate laminated body, and the glass plate In a glass plate packing pallet having a back surface supporting portion for supporting the back surface of the laminate,
The bottom support portion includes a cushioning member disposed between the base portion and the glass plate laminate so as to be separable without being bonded to the base portion. Packing pallet.
2. The bottom support part supports the bottom of the glass plate laminate so that both ends of the bottom of the glass plate in the width direction protrude from the support surface of the bottom support. A pallet for packing glass sheets according to.
The bottom support portion further comprises a cardboard that is separably disposed between the cushioning material and the glass plate laminate without being adhered to the cushioning material. Alternatively, the glass plate packing pallet according to item 2.
Both end portions in the width direction at the bottom side of the glass plate protrude from the cardboard,
The glass plate packing pallet according to claim 3, wherein both end portions of the cushioning material in the width direction protrude from the glass plate.
The glass plate packing pallet according to any one of claims 1 to 4, wherein the cushioning material includes a foamed resin material.
The glass plate packing pallet according to claim 5, wherein the foaming ratio of the foamed resin material is 10 to 40 times.
The glass plate packing pallet according to claim 5 or 6, wherein the cushioning material further includes a rubber material.
A glass plate package comprising the glass plate packaging pallet according to claim 1 and the glass plate laminate packaged therein.