JP2017030847A - Packaging structure of optical sheet, and packaging method of optical sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging structure of an optical sheet which excellently keeps a quality of optical sheet to be packaged and has a good transportation efficiency, and to provide a packaging method of an optical sheet.SOLUTION: A packaging structure 1 and a packaging method of an optical sheet include: packaging a stacked body S formed by alternately stacking an optical sheet 10 and a cushioning sheet 11 with a first packaging material 12 and a second packaging material 13 made from a resin; storing the packaged stacked body S in inner boxes 20 made from cardboard; and arraying and stacking the plurality of the inner boxes 20 and storing the inner boxes 20 in an outer box 30 made from cardboard. At this time, the optical sheet 10 is packaged in a state in which the sheet surface becomes parallel to a vertical direction. The outer box 30 has a bottom plate 31, a sleeve 33, an upper lid 34, and a plurality of legs 32 provided on the bottom plate 31, and a lift member can be inserted into a space formed of the bottom plate 31 and the legs 32.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an optical sheet packing structure and a method for packing an optical sheet when a plurality of optical sheets are transported and stored.

  Conventionally, various optical sheets such as lens sheets and prism sheets are cut into a predetermined size, and are packed, transported, and stored in a state in which a plurality of sheets are stacked in a flat stack (for example, patent documents) 1). At this time, measures are taken to prevent damage to the smooth surface or the unit lens by, for example, placing a sheet-like cushioning material between the laminated optical sheets.

JP 2002-145372 A JP 2002-145371 A

However, in the laminated optical member on the lower layer side, the unit lens or the like may be crushed due to the weight of the laminated optical member, etc., or a dent due to foreign matter such as the cutting residue of the optical sheet remaining between the optical sheets may occur. There was a problem to do. For this reason, the number of optical sheets to be packed as one set (the number of stacked sheets) is limited, and there is a problem that a large amount cannot be packed.
In addition, depending on the size of the packing box, there is a problem in that it cannot be efficiently transported because a space is generated in the truck bed during transportation.

  In addition, a method of packing an optical sheet so that its sheet surface is parallel to the vertical direction has been developed (for example, see Patent Document 2). However, most of the optical sheets are thin and difficult to stand by themselves, so that the packaging work in such a form is difficult, or the optical sheet falls down during the packaging work and is damaged. was there.

  An object of the present invention is to provide an optical sheet packing structure and an optical sheet packing method that maintain good quality of the optical sheet to be packed and have good transport efficiency.

The present invention solves the above problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this.
The invention of claim 1 is a packing structure for packing an optical sheet made of a resin having optical performance, wherein the optical sheet (10) and a sheet-like buffer member (11) are alternately stacked. A resin packaging material (13) for wrapping the body (S), a cardboard inner box (20) for housing the laminate wrapped with the packaging material, and a plurality of the inner boxes arranged and stacked. An outer box (30) made of corrugated cardboard, and the outer box includes a bottom plate portion (31) on which a plurality of inner boxes are arranged and stacked on a mounting surface, and a plurality of mounted A sleeve (33) that covers the periphery of the inner box in a cylindrical shape, a lid (34) that closes the opening opposite to the bottom plate of the sleeve, and the placement surface of the bottom plate A plurality of legs (32) which are provided on the opposite surface and serve as a grounding portion, and are formed by the bottom plate and the legs. The space that is, can be inserted the lifting member, the optical sheet may be packaged in a state in which the seat surface is parallel to the vertical direction, a packaging structure of the optical sheet (1), characterized in.
According to a second aspect of the present invention, in the optical sheet packing structure according to the first aspect, the inner sheet (20) includes the optical sheet of the laminate (S) wrapped in the packaging material (13). A gap filling cushioning material (23) having a hollow rectangular parallelepiped shape is disposed between at least one end face in the stacking direction of (10) and the inner wall of the inner box. It is a packing structure (1).
According to a third aspect of the present invention, in the optical sheet packaging structure according to the first or second aspect, the optical sheet is a rectangular sheet-like member, and the short side dimension and the long side of the optical sheet. The optical sheet packaging structure (1) is characterized in that the dimensional ratio with respect to the dimension is in the range of 1: 5 to 1:25.
The invention according to claim 4 is the optical sheet packaging structure according to any one of claims 1 to 3, wherein the optical sheet packaging structure is made of a resin that further wraps the laminate inside the packaging material (13). The optical sheet packaging structure (1) includes a packaging material (12) formed of a foam.
The invention according to claim 5 is the optical sheet packaging structure according to any one of claims 1 to 4, wherein the outer side (30) has a short side dimension of less than 1000 mm. It is the packing structure (1) of the optical sheet characterized.
The invention of claim 6 is a packing method for packing an optical sheet made of resin having optical performance, wherein the packing table includes a first surface (51a) and a second surface (52a) perpendicular to each other. A laminating step of laminating the optical sheet and a sheet-like cushioning member alternately on the surface of the optical sheet (10) with the orientation of the sheet surface of the optical sheet (10) constant, and the laminating step A packaging process of wrapping the laminate formed in the process with a resin packaging material (12, 13), and the laminate packaged by the packaging process, the sheet surface of the optical sheet being parallel to the vertical direction In this way, after the laminated body accommodation step of accommodating the inner case (20) made of corrugated cardboard and the laminated body accommodation step, the sheet surface of the optical sheet is parallel to the vertical direction, and the inner box Is placed on the mounting surface (3 of the bottom plate portion (31) made of cardboard. a) Inner box stacking step stacked and stacked, and after the inner box stacking step, the periphery of the stacked inner boxes is covered with a sleeve (33), opposite to the bottom plate portion of the sleeve And an inner box housing step of covering and sealing the lid portion (34) on the opening on the side.
The invention of claim 7 is the optical sheet packaging method according to claim 6, wherein in the packaging step, after the laminated body (12) is packaged with a foamed resin packaging material, a resin packaging member ( The optical sheet is packaged by 13).

  ADVANTAGE OF THE INVENTION According to this invention, the quality of the optical sheet packed can be maintained favorable, and the optical sheet packing structure and the optical sheet packing method with good transport efficiency can be provided.

It is a figure explaining the packing structure 1 of the optical sheet of embodiment. It is a figure explaining the packing structure 1 of the optical sheet of embodiment. It is a figure explaining the packing structure 1 of the optical sheet of embodiment. It is a figure explaining the packing structure 1 of the optical sheet of embodiment. It is a figure explaining optical sheet 10 and buffer sheet 11 of an embodiment. It is a figure explaining the packing method of the optical sheet 10 of embodiment. It is a figure explaining the packing method of the optical sheet 10 of embodiment. It is a figure explaining the packing method of the optical sheet 10 of embodiment.

Embodiments of the present invention will be described below with reference to the drawings. In addition, each figure shown below including FIG. 1 is the figure shown typically, and the magnitude | size and shape of each part are exaggerated suitably for easy understanding.
In this specification, the terms “plate”, “sheet”, “film” and the like are used, but these are generally used in the order of “thickness”, “plate”, “sheet”, “film”. It is used in the book as well. However, there is no technical meaning for such proper use, so the terms of sheets, plates, and films can be replaced as appropriate.
Numerical values such as dimensions and material names of the respective members described in the present specification are examples of the embodiment, and the present invention is not limited thereto, and may be appropriately selected and used.
In the present specification, the sheet surface indicates a surface in the planar direction of the optical sheet 10 when viewed as the entire optical sheet 10, and is the same in the present specification and claims. It is used as the definition of

(Embodiment)
1 to 4 are views for explaining an optical sheet packing structure 1 according to this embodiment.
In FIG. 1, the external appearance of the packing structure 1 of this embodiment is shown. In FIG. 2, the figure which decomposed | disassembled the outer case 30 of this embodiment is shown. FIG. 3 shows the inner box 20 of this embodiment and the contents of the inner box 20. FIG. 4 shows the laminate S stored in the inner box 20.
The optical sheet packaging structure 1 of the present embodiment includes a first packaging material 12 and a second packaging material 13 for packaging a laminate S in which a plurality of optical sheets 10 and buffer sheets 11 are laminated, and a state of being packaged in these. An inner box 20 in which the laminated body S is placed, and an outer box 30 in which a predetermined number of inner boxes 20 are stacked on the mounting surface 31a of the bottom plate 31 are packed, transported and stored. Below, the detail of this packing structure 1 is demonstrated.

As shown in FIGS. 1 and 2, the outer box 30 has a substantially rectangular parallelepiped shape, and includes a bottom plate 31, leg portions 32, a sleeve 33, and an upper lid 34. As shown in FIG. 1, in the packaging structure 1 at the time of transportation or the like, a band 35 for luggage fixing is hung on an outer box 30, and an upper lid 34, a sleeve 33, and a bottom plate 31 are fixed.
In FIG. 1 and the like, XYZ coordinate axes are shown as appropriate for easy understanding. The X direction is parallel to the short side of the outer box 30, the Y direction is parallel to the long side of the outer box 30, and the Z direction is parallel to the height direction of the outer box 30.

The outer box 30 is made of cardboard. Since the outer box 30 is an outer shell of the packing structure 1, in addition to functions such as waterproofness and heat insulation, the outer box 30 is rigid enough to stack the outer box 30 with the inner box 20 loaded. It is preferable. Therefore, it is preferable that the outer box 30 be made of corrugated cardboard with increased rigidity due to the laminated structure. In addition, a label indicating the contents, the delivery destination, and the like can be appropriately attached to the outer box 30.
The dimension of the bottom plate of the outer box 30 in the short side direction (X direction) is W1, the long side direction (Y direction) is W2, and the height direction (Z direction) is W3. In order to be able to arrange the outer boxes 30 in two rows in the width direction of the loading platform of the 4-ton truck, the dimension W1 in the short side direction of the outer box 30 is preferably 500 mm or more and less than 1000 mm. In this embodiment, W1 = 941 mm, W2 = 1295 mm, and W3 = 515 mm.

The bottom plate 31 has a rectangular plate shape, and one surface serves as a mounting surface 31a on which the inner box 20 is disposed. A wall 311 protruding perpendicularly from the placement surface 31a of the bottom plate 31 is formed at the peripheral portion of the placement surface 31a. The wall 311 has a function of determining the position of the sleeve 33 with respect to the bottom plate 31.
In order to improve the rigidity of the bottom plate 31, a flat plate member (not shown) having the same thickness as that of the bottom plate 31 is joined to the surface of the mounting surface 31a so as to fit within the frame formed by the wall 311. Yes.
In a use state of the packing structure 1, a plurality of inner boxes 20 are arranged and stacked on the placement surface 31 a of the bottom plate 31. At this time, as shown in FIG. 2, the inner box 20 is arranged such that its long side direction is parallel to the long side direction of the bottom plate 31 (outer box 30).

A plurality of leg portions 32 are provided on the surface of the bottom plate 31 opposite to the placement surface 31a. The leg portion 32 is a portion that becomes a grounding portion when the outer box 30 is disposed on the floor surface or the like. In the present embodiment, the leg portion 32 has a substantially rectangular parallelepiped shape formed of a corrugated board material having a laminated structure. The laminated structure of the leg portions 32 is formed by laminating a plurality of corrugated cardboard materials in the horizontal direction in a form in which the corrugated shape of the core of the corrugated cardboard material extends in the vertical direction in order to obtain sufficient strength against the load. Yes. The leg portions 32 are located at a total of nine locations in the center, four corners, and the peripheral portion of the surface on the opposite side of the mounting surface 31a of the bottom plate 31 from the normal direction of the bottom plate 31 and the center of the short side and the long side. Is provided.
The outer box 30 is a pallet-integrated packing box, and the bottom plate 31 and the legs 32 have a pallet function. Therefore, a fork claw portion such as a forklift or a handlift (not shown) can be inserted into the space between the leg portions 32, and the outer box 30 can be lifted or transported.

As shown in FIG. 2, the sleeve 33 has a substantially rectangular tube shape, and is a member that forms a side surface portion of the outer box 30. The sleeve 33 is placed so as to cover the periphery of the stacked inner boxes 20 after a predetermined number of inner boxes 20 are arranged on the mounting surface 31 a of the bottom plate 31. At this time, the wall 311 of the bottom plate 31 is located outside the sleeve 33.
The upper lid 34 is a substantially rectangular plate-like member, and a wall portion 341 protruding toward the sleeve 33 is formed on the outer peripheral edge of the surface on the sleeve 33 side. The wall portion 341 protrudes perpendicularly from the plate surface of the upper lid 34 and is located outside the sleeve 33 in the use state.

As shown in FIG. 3, the inner box 20 has a substantially rectangular parallelepiped shape, and accommodates a laminated body S packaged with a first packaging material 12 and a second packaging material 13 described later. The inner box 20 is made of cardboard. The inner box 20 has a main body portion 21 and a lid portion 22.
The main body portion 21 is a substantially rectangular parallelepiped box-shaped member. The lid portion 22 is formed extending from one side surface of the main body portion 21. The lid portion 22 may be separated from the main body portion 21.
The inner box 20 accommodates the laminated body S packaged in the first packaging material 12 and the second packaging material 13 and the gap filling cushioning material 23 arranged side by side.

The gap filling cushioning material 23 is arranged between one side surface on the long side of the laminated body S packaged in the first packaging material 12 and the inner wall on the long side of the inner box 20.
The gap-filling buffer material 23 also has a function of improving the rigidity in the stacking direction of the inner box 20 and preventing the stack S from being displaced in the inner box 20. Moreover, when the optical sheet 10 to be described later has an optical shape surface 10a on which a plurality of unit optical shapes 101 are formed, the gap-filling buffer material 23 has a function of protecting the optical shape surface 10a.
Further, by providing such a gap filling cushioning material 23, the strength of the inner box 20 against the load in the vertical direction is improved, and even in the state where the optical sheet 10 or the like is contained, the inner box 20 is moved in the vertical direction. A plurality of layers can be sufficiently stacked.

The gap-filling cushioning material 23 is made of corrugated cardboard and has a rectangular parallelepiped shape with a hollow interior. Note that the gap-filling cushioning material 23 may be a box-shaped member that does not have stored items therein, or a sheet-shaped member having a resin-made hollow structure (so-called plastic cardboard) or the like. May be.
3 shows an example in which the gap-filling buffer material 23 is provided between one side surface on the long side of the stacked body S and the inner wall on the long side of the inner box 20, but this is not limitative. Instead, it may be disposed between the two long side surfaces of the laminate S and the long side inner wall of the inner box 20.

4A, a cross section parallel to the short side direction and the height direction of the laminate S packaged in the first packaging material 12 and the second packaging material 13 (arrows C1-C2 shown in FIG. 3B). The cross-section in FIG. FIG. 4B shows a state where the first packaging material 12 and the second packaging material 13 are unwrapped.
The laminated body S packaged in the first packaging material 12 and the second packaging material 13 has a substantially rectangular parallelepiped shape as shown in FIG. And as shown in FIG. 4, the 1st packaging material 12 is located inside the 2nd packaging material 13 in a packaging state.
The laminated body S is formed by alternately laminating the optical sheets 10 and the buffer sheets 11, and end cushioning materials 14 are provided at both ends in the stacking direction to protect the surface of the optical sheet 10. Has been placed.

FIG. 5 is a diagram illustrating the optical sheet 10 and the buffer sheet 11 of the present embodiment.
The optical sheet 10 is a resin-made rectangular sheet-like member and has optical performance. The optical sheet 10 may be, for example, a Fresnel lens sheet (see FIG. 5B) having an optical shape surface 10a formed by arranging a plurality of unit optical shapes 101, or a lenticular lens sheet. The optical sheet 10 may include a layer having an optical action inside, and both surfaces thereof may be planar. Examples of such an optical sheet include a diffusion optical sheet as shown in FIG. The diffusion optical sheet includes a plurality of layers, and includes a hard coat layer 105, a colored layer 104 that absorbs unnecessary external light, a diffusion layer 103 that diffuses light using a diffusion material, and a light transmission portion 102a. An optical functional layer 102 that diffuses by totally reflecting light at the interface with the wedge-shaped light absorbing portion 102b having a low refractive index is provided.

In this embodiment, the optical sheet 10 will be described by taking a linear Fresnel lens sheet in which the ridge line of the unit lens extends in the vertical direction and a diffusion optical sheet as shown in FIG. 5C as examples. The Fresnel lens sheet and the diffusing optical sheet are combined to form a single transmission screen having a horizontally long screen, and is used for a rear projection display device (not shown). The rear projection type display device is installed on a display shelf of goods in, for example, a retail store, and an image relating to product information such as an explanatory note and a price arranged on the display shelf is displayed on the transmission screen. Is projected. The optical sheet 10 used for the transmission screen arranged on such a display shelf preferably has an aspect ratio in the range of 1: 5 to 1:25.
The optical sheet 10 of the present embodiment has a horizontally long rectangular shape with an aspect ratio of about 1:21, and a vertical direction (short side) dimension W4 = 57 mm and a horizontal direction (long side) dimension W5 = 1198 mm. is there.
The optical sheet 10 has a thickness of about 0.2 to 5 mm. In the present embodiment, when the optical sheet 10 is a diffusion optical sheet, the thickness is about 2 mm, and when the optical sheet 10 is a Fresnel lens sheet, the thickness is about 310 to 360 μm.

The laminated body S is formed by alternately stacking a predetermined number of optical sheets 10 and buffer sheets 11 and disposing end cushioning materials 14 at both ends in the stacking direction. The optical sheet 10 constituting the laminate S is a single type of optical sheet. For example, in one laminate S, 100 sheets are Fresnel lens sheets, and 50 sheets are diffusion optical sheets. The sheets 11 are alternately stacked.
As illustrated in FIG. 5D, the buffer sheet 11 disposed between the optical sheets 10 has an elongated rectangular shape, and has a shape in which the dimension in the short side direction is slightly smaller than the dimension of the optical sheet 10. This is because, when the buffer sheet 11 protrudes from between the optical sheets 10 when the sheet S of the optical sheet 10 is in a state parallel to the vertical direction during the packing operation or the like, the optical sheet 10 and the buffer sheet 11 This is because a partial shift occurs in the laminated structure, and packing work becomes difficult. In addition, although the dimension of the short side direction of the buffer sheet 11 is a little smaller than the dimension of the short side direction of the optical sheet 10, it is a dimension which can fully protect the optical sheet 10. FIG.

The buffer sheet 11 of the present embodiment has a short side (longitudinal direction) dimension W6 = 53.5 mm, a long side (lateral direction) dimension W7 = 1198 mm, and a thickness of 1.0 mm.
The buffer sheet 11 is a member for preventing damage to the adjacent optical sheet 10 and is a sheet-like member made of high-foaming polyethylene, for example, using Miramat (registered trademark) manufactured by JSP Corporation. be able to.
The end cushioning member 14 is a rectangular sheet-like member made of corrugated cardboard, and has a function of improving the rigidity of the stacked body S and improving workability when moving the stacked body S. The end cushioning material 14 may be a sheet-like member (so-called plastic cardboard) having a resin hollow structure. The end cushioning material 14 of the present embodiment has a short side (longitudinal direction) dimension of 58.5 mm, a long side (lateral direction) dimension of 1193 mm, and a thickness of 3.0 mm.

The first packaging material 12 is a rectangular sheet-shaped member that wraps the laminate S. The first packaging material 12 is a highly foamed polyethylene sheet-like member, and can be formed using the same member as the buffer sheet 11 described above. In this embodiment, the 1st packaging material 12 becomes a form which does not coat | cover the end surface of the longitudinal direction both ends of the laminated body S, as shown in FIG.4 (b).
The second packaging material 13 is a rectangular sheet-like member that wraps the laminated body S, and is positioned outside the first packaging material 12 (on the side opposite to the laminated body S side). It has a size that can be packaged. The 2nd packaging material 13 of this embodiment uses the sheet-like member made from polyethylene. The second packaging material 13 may be made of a packaging film such as nylon, polypropylene, or polyvinyl chloride.
When packaging the laminated body S, in the packaging of only the first packaging material 12, the end in the longitudinal direction of the laminated body S remains exposed. However, since the outer side is packaged with the second packaging material 13, the longitudinal ends of the laminate S can be protected, and the looseness of the packaging material at the longitudinal ends where the packaging materials overlap each other is reduced. Even when housed in the inner box 20, there is an effect that it is difficult to create an unnecessary space that causes the optical sheet 10 or the like to move and cause damage.

As shown in FIG. 4A, the optical sheet 10 has a sheet surface that is parallel to the vertical direction in a state of being housed in the inner box 20. Even when the inner box 20 is placed in the outer box 30, the sheet surface of the optical sheet 10 is parallel to the vertical direction (perpendicular to the placement surface 31 a of the bottom plate 31).
That is, the optical sheet 10 is packed by the packing structure 1 while maintaining the state in which the sheet surface is parallel to the vertical direction in the inner box 20 and the outer box 30. Therefore, according to the present embodiment, it is possible to prevent deformation such as crushing of the unit optical shape 101 due to the load of the stacked optical sheets 10 or the like, which becomes a problem when the optical sheets 10 are stacked and packed.
Further, when foreign matter such as dust is mixed in the outer box 30 or the inner box 20 or when foreign matter such as cutting waste at the time of cutting is attached to the surface of the optical sheet 10, the optical sheet 10 is flatly stacked. When packed, the surface of the optical sheet 10 or the like is likely to be dented due to foreign matter due to the load of the stacked optical sheets 10 or the like. However, according to the present embodiment, the optical sheet 10 is packed in a state where the sheet surface is parallel to the vertical direction.
Therefore, according to the optical sheet packaging structure 1 of the present embodiment, transportation and storage can be performed while maintaining good quality of the optical sheet 10.

Moreover, the dimension of the width direction of the loading platform of a general 4-ton truck is about 2 m. Since the outer box 30 has a dimension W1 in the short side direction of 500 mm or more and less than 1000 mm (941 mm in this embodiment), the outer box 30 has a short side direction parallel to the width direction of the loading platform of the 4-ton truck. Can be arranged in two rows. Therefore, it is possible to efficiently load a large amount of the outer boxes 30 without greatly leaving an extra gap in the truck bed, thereby improving the transportation efficiency.
Further, the outer box 30 has a leg 32 formed on the bottom plate 31 and is a pallet-integrated packing box, so that it can be lifted and transported by a forklift or the like, or stacked on another outer box 30. be able to.
Further, since the outer box 30 is made of cardboard and is a pallet-integrated packaging box in which the legs 32 are formed on the bottom plate 31, it is easy to dispose of the outer box 30 after use, and resource utilization through recycling. In addition, it is lightweight and does not require collection of the pallet after use of the outer box 30, so that the delivery cost can be reduced.

6-8 is a figure explaining the packing method of the optical sheet 10 of this embodiment.
In FIG. 6, the packing stand 50 which produces the laminated body S is shown. In FIG. 7, the formation method of the laminated body S and the packaging method of the laminated body S are shown. In FIG. 8, the state which accommodated the laminated body S packaged in the inner box 20 is shown. In FIG. 7, for ease of understanding, only the placement unit 51 and the support unit 52 are shown for the packing table 50.
As shown in FIG. 6, the packing table 50 includes a mounting portion 51, a support portion 52 that is orthogonal to the mounting portion 51 and extends upward, a pressing portion 53 that is orthogonal to the mounting portion 51 and the support portion 52, and these And a pedestal portion 54 for supporting the.

The placement part 51 and the support part 52 are rectangular flat members. The placement part 51 and the support part 52 are inclined to the opposite sides with respect to the vertical direction (the chain line H shown in FIG. 6B). An angle θ1 formed by the mounting portion 51 and the support portion 52 is fixed at 90 °.
In the placement unit 51, one surface (the surface on the support unit 52 side) is a placement surface 51 a on which the optical sheet 10 is placed. The placement surface 51a is flat.
In the mounting surface 51a, the long side direction (longitudinal direction) is parallel to the horizontal direction (arrow A direction shown in FIG. 6A). Moreover, the dimension of the longitudinal direction of the mounting surface 51a is formed shorter than the dimension W5 of the long side direction of the optical sheet 10 to be packed.

The support portion 52 is arranged and fixed so as to protrude from the end portion of one long side of the placement portion 51. One surface of the support portion 52 (the surface facing the placement surface 51a) is a support surface 52a that supports the stacked optical sheets 10 and the like.
The support surface 52a forms an angle θ1 = 90 ° with the placement surface 51a.
The dimension in the longitudinal direction of the support surface 52a is shorter than the dimension W5 in the long side direction of the optical sheet 10 to be packed, and is equal to the dimension in the longitudinal direction of the mounting surface 51a.
The support surface 52a supports the plurality of optical sheets 10 stacked on the placement surface 51a from the end surface side (direction parallel to the sheet surface of the optical sheet 10).

The mounting portion 51 and the supporting portion 52 are supported by the pedestal portion 54 from the back side, respectively, and the mounting surface 51a and the supporting surface 52a are vertical while maintaining the angle between the mounting surface 51a and the supporting surface 52a. The angle formed with the direction (dashed line H) is supported to be changeable.
In the packing table 50, a plurality of long optical sheets 10 are stacked on the mounting surface 51a. Accordingly, the angle θ2 formed by the mounting surface 51a with respect to the vertical direction (the chain line H in FIG. 6B) so that the optical sheets 10 can be stably stacked is in the range of 15 ° to 75 °. It is preferable to be within. In addition, from the viewpoint of effectively preventing the optical sheet 10 from being shifted from another optical sheet 10 and falling down during the lamination, the angle θ2 is preferably in the range of 30 ° to 60 °.

The packing table 50 includes a pressing portion 53 having a pressing surface 53a that presses a plurality of optical sheets 10 stacked on the mounting surface 51a from the longitudinal direction (arrow A direction).
The pressing portion 53 is a rectangular flat plate-like member, has a positioning function in the longitudinal direction (arrow A direction) of the optical sheet 10, and suppresses the optical sheet 10 from being shifted and overlapped in the longitudinal direction. It is provided for.
The pressing portion 53 is arranged with a predetermined dimension away from the placement portion 51 and the support portion 52 along the longitudinal direction of the placement portion 51 and the support portion 52. And the pressing part 53 is being fixed to the support part 52 via the connection member.
The pressing surface 53a of the pressing portion 53 is orthogonal to the placement surface 51a and the support surface 52a and is parallel to the vertical direction.
As for the size of the pressing surface 53a of the pressing portion 53, the dimension in the short side direction is equal to the dimension in the short side direction of the mounting surface 51a, and the dimension in the long side direction is longer than the length in the short side direction of the support surface 52a. Is formed.

Next, the formation method of the laminated body S shown in FIG. 7 and the packaging method of the laminated body S are demonstrated.
First, as shown to Fig.7 (a), the 1st packaging material 12 and the 2nd packaging material 13 are spread | laid so that the mounting surface 51a and the support surface 52a of the packing stand 50 may be covered.
Next, as shown in FIG.7 (b), the buffer material 14 for edge parts is arrange | positioned on the mounting surface 51a of the mounting part 51, and the buffer sheet 11 is arrange | positioned on it. Next, the optical sheet 10 is disposed on the buffer sheet 11. Then, the optical sheets 10 and the buffer sheets 11 are alternately stacked until a predetermined number of optical sheets 10 are disposed. And after arrange | positioning the last optical sheet 10, the buffer sheet 11 is arrange | positioned on it, Furthermore, the buffer material 14 for edge parts is arrange | positioned, and the laminated body S is formed (lamination process).
At this time, when the optical sheet 10 has the optical shape surface 10a in which the unit optical shapes 101 are arranged on one surface or the like, the unit may be arranged so that the orientation of the optical shape surface 10a is constant at the time of lamination. This is preferable from the viewpoint of preventing the optical shape 101 from being damaged.

The mounting surface 51a is inclined such that the support surface 52a side is positioned on the lower side in the vertical direction and the side opposite to the support surface 52a side is positioned on the upper side in the vertical direction. Therefore, the optical sheets 10 and the buffer sheets 11 that are alternately stacked move toward the support surface 52a by the action of gravity, and are stably supported by the support surface 52a. The position of the end portion on the support surface 52a side is determined.
In addition, the optical sheets 10 and the buffer sheets 11 that are alternately stacked have one end surface in the longitudinal direction pressed against the pressing surface 53a. Thereby, the position of the optical sheet 10 and the buffer sheet 11 in the longitudinal direction can be determined, and the optical sheet 10 and the buffer sheet 11 can be effectively suppressed from being displaced in the longitudinal direction.

Next, as shown in FIG. 7C, the laminated body S formed by the optical sheets 10 and the buffer sheets 11 that are alternately stacked by a predetermined number of sheets is formed by the first packaging material 12 and the second packaging material 13. Packaging (packaging process).
First, the laminated body S is covered with the first packaging material 12, the first packaging material 12 is fastened with a tape material or the like (not shown), and then the second packaging material 13 is wrapped with the first packaging material 12. Is further wrapped, and the second packaging material 13 is fastened with a tape material 15 (see FIG. 7D) or the like.
At this time, since the pressing portion 53 is separated from both the placement portion 51 and the support portion 52 by a predetermined dimension along the longitudinal direction, the pressing portion 53, the placement portion 51, and the support portion. The operator can insert his / her hand between 52 and 52. Therefore, the workability of packaging the laminate S with the first packaging material 12 and the second packaging material 13 can be improved.

Next, as shown in FIG.7 (d), as for the laminated body S packed in the 1st packaging material 12 and the 2nd packaging material 13, the unit optical shape 101 was formed in the packaged state on the surface. A label 16a indicating the optical shape surface 10a side, a label 16b indicating the type of the optical sheet 10 being packaged, and the like are attached.
Then, as shown to Fig.8 (a), the laminated body S packaged in the 1st packaging material 12 and the 2nd packaging material 13 is accommodated in the main-body part 21 of the inner box 20 (laminated body accommodation process). At this time, the laminated body S is placed in the inner box 20 so that the sheet surface of the optical sheet 10 is parallel to the vertical direction.
Then, a gap filling cushioning material 23 is disposed between the packaged laminated body S in the inner box 20 and the inner wall of the inner box 20. Thereby, the improvement of the rigidity of the stacking direction of the inner box 20 and the shift | offset | difference of the laminated body S in the inner box 20 can be prevented. Moreover, when the optical sheet 10 has the optical shape surface 10a, in the laminated body S packaged in the 1st packaging material 12 and the 2nd packaging material 13, the end surface by the side of the optical shape surface 10a faces this end surface. By disposing the gap-filling cushioning material 23 between the inner wall 20 and the inner wall of the main body 21, the unit optical shape 101 is prevented from being damaged by hitting the inner wall of the inner box 20.
Next, as shown in FIG. 8B, the lid portion 22 is put on the main body portion 21, and the inner box 20 is sealed with the tape material 24 or the like. Then, a label or the like is appropriately attached to the surface of the lid portion 22 of the inner box 20 or the like.

Next, as shown in FIG. 2, the predetermined number of inner boxes 20 created are arranged on the placement surface 31 a of the outer box 30 (inner box loading step). At this time, a mounting surface buffer sheet (not shown) may be disposed on the entire surface of the mounting surface 31a. As the cushioning sheet for the mounting surface, a sheet-like member made of highly foamed polyethylene similar to the cushioning sheet 11 can be used. As shown in FIG. 2, the inner box 20 has a bottom surface 31 (mounting) of the outer box 30 such that the sheet surface of the optical sheet 10 is parallel to the vertical direction (Z direction). The mounting surface 31a) is arranged and stacked on the mounting surface 31a so as to be parallel to the long side direction (Y direction). In the present embodiment, four inner boxes 20 are arranged side by side on the placement surface 31a and are stacked in five stages.
After a predetermined number (in this embodiment, 20) of inner boxes 20 are loaded on the placement surface 31a, the loaded inner boxes 20 are covered with sleeves 33 to cover the periphery, and the upper lid 34 is further covered. . Then, the upper lid 34 and the sleeve 33 are fixed to the bottom plate 31 through the band 35 on the outer periphery of the outer box 30 (inner box housing step).
As described above, the optical sheet 10 is packed by the packing structure 1. In this state, storage and transportation are possible.

Therefore, according to the present embodiment, the optical sheets 10 and the buffer sheets 11 that are alternately stacked are stably supported by being moved toward the support surface 52a by the action of gravity, and the optical sheets 10 and the like are supported by the support surface 52a. The position in the short side direction is determined. Therefore, even if the operator does not always correct the balance between the optical sheet 10 and the buffer sheet 11, the optical sheet 10 and the buffer sheet 11 can be stably stacked, so that the packing operation can be performed efficiently. The stacked long optical sheets 10 can be efficiently packed using the packing table 50.
Moreover, according to this embodiment, since the packing stand 50 provided with the pressing part 53 which has the pressing surface 53a is used, it can suppress effectively that the optical sheet 10 and the buffer sheet 11 shift | deviate to the longitudinal direction.
Further, according to the present embodiment, the pressing portion 53 is separated from the mounting portion 51 in the longitudinal direction of the mounting portion 51, so that the pressing portion 53, the mounting portion 51, and the support portion 52. The operator can insert a hand between them, and the stacking work of the laminate S can be performed efficiently.

From the above, according to the optical sheet packaging structure 1 and the packaging method of the present embodiment, the optical sheet 10 can be packaged, transported, and stored while the quality of the optical sheet 10 is kept good.
Moreover, according to this embodiment, even the long optical sheet 10 can be easily packed, and the packing operation can be performed easily and efficiently.
Further, according to the present embodiment, two rows of outer boxes 30 can be arranged in the width direction of the loading platform of a general 4-ton truck so that the short side direction of the outer packaging is parallel, leaving a large extra space on the loading platform. It can be transported efficiently without any problems.

(Deformation)
The present invention is not limited to the embodiment described above, and various modifications and changes are possible, and these are also within the scope of the present invention.
(1) In this embodiment, the packing structure 1 and the packing method of the optical sheet 10 are long in which the long side (lateral direction) dimension W5 is 5 to 25 times the short side (vertical direction) dimension W4. However, the present invention is not limited to this. For example, the present invention may be applied to an optical sheet used for a general screen having an aspect ratio of 3: 4 or 9:16. You may apply to the optical sheet of another shape.

(2) In the present embodiment, the leg portion 32 of the outer box 30 has a rectangular parallelepiped shape, and a plurality of examples are arranged on the surface of the bottom plate 31 opposite to the mounting surface 31a. However, the present invention is not limited thereto. For example, it may be a girder-shaped leg. The shape is not particularly limited as long as a fork claw such as a forklift can be inserted.

(3) In this embodiment, although the 1st packaging material 12 and the 2nd packaging material 13 showed the example which is a resin-made sheet-like member, not only this but at least one is formed in the bag shape. May be. By setting it as such a form, packing work can be performed more easily.

  In addition, although this embodiment and modification can also be used in combination as appropriate, detailed description is abbreviate | omitted. Further, the present invention is not limited to the embodiment described above.

DESCRIPTION OF SYMBOLS 1 Packing structure 10 Optical sheet 11 Buffer sheet 12 1st packaging material 13 2nd packaging material 14 End buffer material 15 Tape material 20 Inner box 21 Main body part 22 Lid part 23 Crevice filling buffer material 30 Outer box 31 Bottom plate part 32 Leg part 33 Sleeve 34 Lid 50 Packing table 51 Placement part 52 Support part 53 Pushing part S Laminate

Claims (7)

A packing structure for packing a resin optical sheet having optical performance,
A resin-made packaging material that wraps a laminate formed by alternately laminating the optical sheet and the sheet-like buffer member; and
An inner box made of cardboard for storing the laminate wrapped in the packaging material;
A plurality of inner boxes arranged and stacked and stored in a cardboard outer box;
With
The outer box is
A bottom plate portion on which a plurality of the inner boxes are arranged and stacked on a placement surface, a sleeve that covers the periphery of the plurality of placed inner boxes in a cylindrical shape, and the bottom plate portion of the sleeve A lid that closes the opening on the opposite side, and a plurality of legs that are provided on the surface opposite to the mounting surface of the bottom plate and serve as a grounding portion,
A lift member can be inserted into the space formed by the bottom plate portion and the leg portion,
The optical sheet is packed in a state where the sheet surface is parallel to the vertical direction,
Optical sheet packaging structure characterized by the above. In the packaging structure of the optical sheet according to claim 1,
In the inner box, a gap filling buffer having a hollow rectangular parallelepiped shape between at least one end surface of the optical sheet in the stacking direction of the optical sheet and the inner wall of the inner box is wrapped in the packaging material. That the material is placed,
Optical sheet packaging structure characterized by the above. In the packaging structure of the optical sheet according to claim 1 or 2,
The optical sheet is a rectangular sheet-shaped member,
The dimensional ratio between the short side dimension and the long side dimension of the optical sheet is in the range of 1: 5 to 1:25.
Optical sheet packaging structure characterized by the above. In the optical sheet packaging structure according to any one of claims 1 to 3,
Inside the packaging material, further comprising a packaging material formed of a resin foam that wraps the laminate,
Optical sheet packaging structure characterized by the above. In the optical sheet packaging structure according to any one of claims 1 to 4,
The dimension of the short side of the outer box is less than 1000 mm,
Optical sheet packaging structure characterized by the above. A packing method for packing a resin optical sheet having optical performance,
The optical sheet and the sheet-like cushioning member are alternately stacked on the first surface of the packing table including the first surface and the second surface orthogonal to each other, with the orientation of the sheet surface of the optical sheet being constant. And laminating process to form a laminate,
A packaging step of wrapping the laminate formed in the lamination step with a resin packaging material;
A laminate housing step of housing the laminate packaged in the packaging step in a corrugated cardboard inner box such that the sheet surface of the optical sheet is parallel to the vertical direction;
After the laminated body storing step, the inner box is stacked and arranged on the mounting surface of the bottom plate portion made of corrugated board so that the sheet surface of the optical sheet is parallel to the vertical direction. Process,
After the inner box loading step, the inner box storing step of covering the periphery of the loaded inner box with a sleeve and covering the opening opposite to the bottom plate portion of the sleeve with a lid portion and sealing,
An optical sheet packaging method comprising: The method of packing an optical sheet according to claim 6,
In the packaging step, after packaging the laminate with a foamed resin packaging material, further packaging with a resin packaging member,
An optical sheet packaging method characterized by the above.

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