JP2008081190A - Packaging material for optical sheet, optical-sheet packaging body, and pressure-sensitive adhesive tape for sealing packaging material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging material for an optical sheet, an optical-sheet packaging body, and a pressure-sensitive adhesive tape for sealing the packaging material to efficiently perform packaging operation for the optical sheet. <P>SOLUTION: The packaging body 68 is constituted by storing a laminated body 72 constituting the optical sheet in the packaging material 70. A portion of the packaging material 70 is locked with the other portion thereof by the pressure-sensitive adhesive tapes 74A, 74B, 74C, and 74D. At least each one end portion of the adhesive tapes 74A, 74B, 74C, and 74D is formed as a non-adhesive portion and/or a weak-adhesive portion 96. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a packaging material for an optical sheet, an optical sheet packaging body, and an adhesive tape for sealing a packaging material, and in particular, a packaging material for an optical sheet that enables packaging of an optical sheet with good working efficiency, and an optical sheet. The present invention relates to a packaging body and an adhesive tape for sealing a packaging material.

  In recent years, optical sheets (optical films) such as a film that diffuses light from a light source such as a light guide plate or a lens film that condenses light in the front direction have been used for applications such as liquid crystal display elements and organic EL. The demand is growing dramatically. Therefore, it is required to carry out the optical sheet packing operation simply and quickly and to efficiently convey the optical sheet.

  On the other hand, packaging an object is also widely performed in fields other than optical sheets, and various techniques according to applications have been proposed.

For example, Patent Document 1 proposes an opening label for a packaging film for packaging cup ramen, rice balls, and the like. The opening label of this packaging film aims to prevent deformation of the packaged body when the packaging film is opened. Patent Document 2 proposes an opening label for opening a packaging film for packaging cup ramen and the like, and a packaging body with an opening label. The purpose of this opening label is to easily peel the separation piece from the opening label after opening the packaging film. Moreover, in patent document 3, the sealing apparatus which seals an object workpiece | work with an adhesive tape is proposed.
JP-A-11-292141 JP-A-11-208724 JP 2000-272609 A

  As described above, various proposals relating to packaging have been made. However, no proposal has been made for a technique for appropriately and simply packaging an optical sheet that requires very careful handling.

  For example, the techniques disclosed in Patent Document 1 and Patent Document 2 are techniques related to unsealing, and the problems to be solved and the gist of the techniques are different from the techniques for sealing an optical sheet. In addition, since the techniques disclosed in Patent Document 1 and Patent Document 2 are intended for cup ramens that do not require high-level careful handling, very careful handling is required. The technical field is different from the optical sheet with various standards, and the required technical level is very different.

  Moreover, since the technique currently disclosed by patent document 3 requires a very large installation, it is not necessarily preferable from a viewpoint of packaging an optical sheet easily.

  The present invention has been made in view of such circumstances, and an optical sheet packaging material, an optical sheet packaging body, and an adhesive for sealing a packaging material capable of easily and efficiently packaging optical sheets. The purpose is to provide a tape.

  In order to achieve the above object, the present invention provides a packaging material for an optical sheet for accommodating an optical sheet therein, and has two planes whose plane size is larger than the plane size of the optical sheet. A sheet-like body, wherein the two sheet-like bodies are joined together at least on one side, and the optical sheet is disposed between the two sheet-like bodies stacked, and the at least one side in a joined state A packaging material for an optical sheet is provided in which the optical sheet is accommodated inside by folding back the two sheet-like bodies on other sides.

  Moreover, this invention is an optical sheet packaging body provided with an optical sheet and the packaging material which accommodates the said optical sheet in an inside, Comprising: The said packaging material has a plane size larger than the plane size of the said optical sheet. Having two substantially rectangular sheet-like bodies, the two sheet-like bodies being joined together at least on one side, and the optical sheet is disposed between the two sheet-like bodies stacked, Provided is an optical sheet packaging body in which the optical sheet is accommodated in the packaging material by folding the two sheet-like bodies on sides other than the at least one side in a joined state.

  According to the present invention, an optical sheet is disposed between two sheet-like bodies of the packaging material, and the two sheet-like bodies are folded back so that the optical sheet is accommodated inside the packaging material. Thus, an optical sheet package can be formed. Accordingly, it is possible to prevent damage to the optical sheet that is the packaged object, and to reduce the number of operations when packaging the optical sheet by a simple method, thereby realizing good work efficiency.

  Here, the “substantially rectangular” is a concept including a quadrangle and a similar shape, and includes a rectangle and a square. Moreover, the two sheet-like bodies should just be joined by at least 1 side, for example, both may be joined in 2 sides and 3 sides.

  “Optical sheet” is a general term for various sheets having optical functions, and is a diffusion sheet, a polarizing plate (polarizing film), various lens sheets (lenticular lenses, fly-eye lenses), prism sheets. Etc.) is a typical one.

  The optical sheet may be a laminated body in which a plurality of sheets are stacked in a predetermined order. In this case, the laminate is preferably of a type in which a plurality of sheets having a size larger than the product size are laminated and then cut into the product size. In addition, by using an optical sheet that has been cut into a product size in advance, a process of cutting a number of sheets (films) into a product size can be omitted, and a process of stacking while positioning a number of layers of sheets can be omitted. In this case, damage to the packaged body can be avoided without using a protective sheet, no problem is caused by the protective sheet, and this is advantageous in terms of cost and quality. Furthermore, the problem at the time of laminating | stacking several layers of films, and the problem by the thermal expansion and thermal contraction between several films can be avoided.

  In the present invention, it is preferable that the folded portion of the two sheet-like bodies is locked to the other portion of the two sheet-like bodies by an adhesive tape.

  Thus, if the folded part of the packaging material and the other part are locked by the adhesive tape, there is no concern that the packaging material will be disassembled, and a high-quality packaging body can be provided.

  Further, the present invention is a packaging material sealing pressure-sensitive adhesive tape for locking a part of a packaging material for housing an optical sheet and another part, and at least one end of the packaging material sealing pressure-sensitive adhesive tape Provided is an adhesive tape for sealing a packaging material, wherein the portion forms a non-adhesive part or a weak adhesive part.

  According to the present invention, since at least one end portion of the packaging material sealing adhesive tape forms a non-adhesive portion or a weak adhesive portion, an operation of causing an end portion of the adhesive tape when releasing the packaging material is very difficult. And work efficiency is greatly improved.

  In addition, it is preferable that a non-adhesive part is formed in the edge part of an adhesive tape from a viewpoint of making the raise of an adhesive tape end part easy. Moreover, it is preferable to form a weak adhesive part inside a non-adhesive part. Moreover, it is preferable that a non-adhesive part or a weak adhesive part is formed in the both ends of an adhesive tape from a viewpoint of improving the freedom degree of the peeling direction of the adhesive tape at the time of opening.

  In this invention, it is preferable that the display which shows the said non-adhesion part or the said weak adhesion part is formed in the said adhesive tape for packaging material sealing.

  Thus, if the indication indicating that the non-adhesive part or the weak adhesive part is provided is provided on the adhesive tape, it becomes very easy to determine when the end of the adhesive tape is caused, and the packaging material is unlocked. Work efficiency can be improved.

  In addition, as such a display, what is necessary is just to be able to notify a user of presence of a non-adhesion part or a weak adhesion part directly or indirectly. Therefore, as such a display, for example, a character, a symbol, a pattern, a color display (solid printing), and a combination thereof that directly indicate the presence of a non-adhesive part or a weak adhesive part may be used. The presence of the part may be displayed indirectly to indicate the presence of the non-adhesive part or the weak adhesive part. Moreover, the display which shows the site | part of a non-adhesion part or a weak adhesion part, or the site | part of an adhesion part may be sufficient.

  In the present invention, it is preferable to further include a non-adhesive or weak adhesive tab portion protruding from the non-adhesive portion or the weak adhesive portion.

  In this case, since the tab portion can be used as a gripping portion for the user, the user can easily cause the end portion of the adhesive tape, and work efficiency can be improved. In addition, it is preferable that a tab part is non-adhesive from a viewpoint of making the raise of an adhesive tape end part easy.

  ADVANTAGE OF THE INVENTION According to this invention, the operation | work at the time of accommodating an optical sheet in a packaging material and packaging or unpacking can be performed efficiently and simply, and the convenience regarding packaging can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. First, configurations of examples (first to sixth examples) of display optical sheets to which the present invention is applied will be described, and then a method and an apparatus for manufacturing these display optical sheets will be described.

  FIG. 1 is a cross-sectional view showing a configuration of an example (first example) of an optical sheet for display to which the present invention is applied. The optical sheet for display 10 is an optical sheet module in which a first diffusion sheet 12, a first prism sheet 14, a second prism sheet 16, and a second diffusion sheet 18 are laminated in order from the bottom. is there.

  The first diffusion sheet 12 and the second diffusion sheet 18 are sheets in which beads are fixed to the surface (one side) of a transparent film (support) with a binder, and have a predetermined light diffusion performance. The first diffusion sheet 12 and the second diffusion sheet 18 have different bead diameters (average particle diameters) and light diffusion performance.

  A resin film can be used for the transparent film (support) used for the first diffusion sheet 12 and the second diffusion sheet 18. As the material of the resin film, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, polyester, polyolefin, acrylic, polystyrene, polycarbonate, polyamide, PET (polyethylene terephthalate), biaxially stretched polyethylene terephthalate, Known materials such as polyethylene naphthalate, polyamideimide, polyimide, aromatic polyamide, cellulose acylate, cellulose triacetate, cellulose acetate propionate, and cellulose diacetate can be used. Of these, polyester, cellulose acylate, acrylic, polycarbonate, and polyolefin are particularly preferable.

  The bead diameters of the first diffusion sheet 12 and the second diffusion sheet 18 need to be 100 μm or less, and preferably 25 μm or less. Therefore, the beads of the diffusion sheet 12 and the diffusion sheet 18 can have an average particle diameter of 17 μm, for example, within a predetermined distribution of 7 to 38 μm.

  The first prism sheet 14 and the second prism sheet 16 are lens sheets in which convex lenses formed in one axial direction are adjacently arranged on substantially the entire surface. For example, the pitch is 50 μm and the uneven height is The apex angle of the convex portion can be 90 degrees (right angle).

  The first prism sheet 14 and the second prism sheet 16 are arranged in a direction in which the axis of the convex lens (prism) is substantially perpendicular. That is, in FIG. 1, the axis of the convex lens of the first prism sheet 14 is arranged in a direction perpendicular to the paper surface, and the axis of the convex lens of the second prism sheet 16 is arranged in a direction parallel to the paper surface. Has been. In FIG. 1, the second prism sheet 16 is shown in a direction different from the actual direction so that it can be understood that the cross section of the second prism sheet 16 is a convex lens.

  Various known aspects can be adopted as materials and manufacturing methods of the first prism sheet 14 and the second prism sheet 16. For example, a sheet-shaped resin material extruded from a die is rotated at a speed approximately equal to the extrusion speed of the resin material (a reverse type of a prism sheet is formed on the surface), and disposed opposite to the transfer roller. A method for producing a resin sheet can be employed in which the nip roller plate that rotates at the same speed is pressed and the uneven shape on the surface of the transfer roller is transferred to the resin material.

  Further, as a method for producing a resin sheet, a transfer mold plate (stamper) having a prism sheet reverse mold formed on the surface thereof is laminated with a resin plate, and thermal transfer is performed on the laminate using a hot press. A press molding method can also be employed.

  As a resin material used in such a manufacturing method, a thermoplastic resin can be used, for example, polymethyl methacrylate resin (PMMA), polycarbonate resin, polystyrene resin, MS resin, AS resin, polypropylene resin, polyethylene resin. , Polyethylene terephthalate resin, polyvinyl chloride resin (PVC), thermoplastic elastomer, or a copolymer thereof, cycloolefin polymer, and the like.

  As another manufacturing method, on the surface of a transparent film (polyester, cellulose acylate, acrylic, polycarbonate, polyolefin, etc.) similar to the material used for the first diffusion sheet 12 and the second diffusion sheet 18, It is possible to adopt a resin sheet manufacturing method in which the unevenness on the surface of the uneven roller (the reverse type of the prism sheet is formed on the surface) is transferred.

  More specifically, a transparent film in which an adhesive and a resin are sequentially applied to the surface and an adhesive layer and a resin layer (for example, a UV curable resin) are formed in two or more layers is continuously run. Then, the transparent film is wound around the rotating concavo-convex roller, the concavo-convex surface of the concavo-convex roller is transferred to the resin layer, and the transparent film is wound around the concavo-convex roller, for example, by UV irradiation. The manufacturing method of the uneven | corrugated sheet | seat which hardens a layer is employable. Note that no adhesive is required.

  In addition, the manufacturing method of the 1st prism sheet 14 and the 2nd prism sheet 16 is not limited to said example, If a desired uneven | corrugated shape can be formed in the surface, it is also possible to employ | adopt another manufacturing method. is there.

  As shown in FIG. 1, a joined portion 10 </ b> A is formed by the left and right ends of the display optical sheet 10, and the layers are integrated by the joined portion 10 </ b> A. The joining portion 10A can be realized by any method, and for example, heat fusion can be used.

  The display optical sheet 10 is disposed, for example, between a light source device and a liquid crystal cell, and is used so that a liquid crystal display element is formed as a whole. In this case, in addition to the advantage that the optical sheet for display can be manufactured at low cost and high quality by a simpler process than before, there is an advantage that the assembly work of the liquid crystal display element can be easily performed. is there.

  Next, another example (second example) of the optical sheet for display to which the present invention is applied will be described. FIG. 2 is a cross-sectional view showing the configuration of the display optical sheet 20. In addition, the same code | symbol is attached | subjected about the member similar to FIG. 1 (1st example), and the detailed description is abbreviate | omitted.

  The display optical sheet 20 is an optical sheet in which a diffusion sheet 12, a first prism sheet 14, and a second prism sheet 16 are laminated in order from the bottom. When a wide diffusion performance is not required, the second diffusion sheet 18 can be omitted.

  The display optical sheet 20 of this example is disposed between the light source device and the liquid crystal cell, for example, as in the case of the display optical sheet 10 of the first example, and is used so that a liquid crystal display element is formed as a whole. .

  Next, still another example (third example) of the optical sheet for display to which the present invention is applied will be described. FIG. 3 is a cross-sectional view showing a configuration of the display optical sheet 30. In addition, the same code | symbol is attached | subjected about the same and similar member as FIG. 1 (1st example) and FIG. 2 (2nd example), and the detailed description is abbreviate | omitted.

  The display optical sheet 30 of this example is an optical sheet in which a first diffusion sheet 12, a prism sheet 14, and a second diffusion sheet 18 are laminated in order from the bottom. When the diffusion performance in the direction perpendicular to the paper surface is not required, the second prism sheet 16 can be omitted.

  Similar to the display optical sheet 10 of the first example, the display optical sheet 30 is disposed, for example, between a light source device and a liquid crystal cell, and is used so that a liquid crystal display element is formed as a whole.

  Next, still another example (fourth example) of the optical sheet for display to which the present invention is applied will be described. FIG. 4 is a cross-sectional view showing a configuration of the display optical sheet 40. In addition, about the same and similar member as FIGS. 1-3 (1st example-3rd example), the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  The display optical sheet 40 is an optical sheet in which the diffusion sheet 12 and the prism sheet 14 are laminated in order from the bottom. When a wide diffusion performance is not required, the second diffusion sheet 18 can be omitted. When a diffusion performance in a direction perpendicular to the paper surface is not required, the second prism sheet 16 can be omitted.

  The display optical sheet 40 of the present example is disposed between, for example, the light source device and the liquid crystal cell, and is used so that a liquid crystal display element is formed as a whole, like the display optical sheet 10 of the first example. .

  Next, another example (fifth example) of the optical sheet for display to which the present invention is applied will be described. FIG. 5 is a cross-sectional view showing the configuration of the display optical sheet 50. In addition, about the same and similar member as FIGS. 1-4 (1st example-4th example), the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  The display optical sheet 50 of this example is an optical sheet in which a first prism sheet 14, a second prism sheet 16, and a diffusion sheet 18 are laminated in order from the bottom. When a wide diffusion performance is not required, the first diffusion sheet 12 can be omitted.

  Similar to the display optical sheet 10 of the first example, the display optical sheet 50 is disposed, for example, between a light source device and a liquid crystal cell, and is used so that a liquid crystal display element is formed as a whole.

  Next, another example (sixth example) of the optical sheet for display to which the present invention is applied will be described. FIG. 6 is a cross-sectional view showing a configuration of the display optical sheet 60. In addition, the same code | symbol is attached | subjected about the member similar to FIGS. 1-5 (1st example-5th example), and the detailed description is abbreviate | omitted.

  The display optical sheet 60 is an optical sheet in which the first prism sheet 14 and the diffusion sheet 18 are laminated in order from the bottom. If a wide diffusion performance is not required, the first diffusion sheet 12 can be omitted, and if a diffusion performance in a direction perpendicular to the paper surface is not required, the second prism sheet 16 can be omitted.

  Similar to the display optical sheet 10 of the first example, the display optical sheet 60 is disposed, for example, between a light source device and a liquid crystal cell, and is used so that a liquid crystal display element is formed as a whole.

  The planar size of each of the display optical sheets 10 to 60 described above is not particularly limited, and can correspond to the shape and size of the backlight unit of the display (liquid crystal display element or the like). For example, the diagonal size is 127 mm. (5 inches) to 1640 mm (65 inches). As described above, the display optical sheets 10 to 60 can be suitably used for backlight units of various displays (liquid crystal display elements and the like).

  Next, a packaging material used for a laminated sheet before the display optical sheets 10 to 60 are assembled, a display optical sheet packaging body using the packaging material, and a packaging material sealing adhesive tape are described in detail. To do.

  FIG. 7 is a perspective view showing a method (first example) for housing the laminated body 72 (optical sheet) of the optical sheet for display using the packaging material 70. The laminated body 72 of the optical sheet for display is a semi-finished product (for example, the optical sheets are not fixed to each other) when the optical sheets for display 10 to 60 described above are manufactured. The following accommodation methods can be applied to 10 to 60.

  In FIG. 7, the packaging material 70 is configured by two substantially rectangular sheet-like bodies 70A and 70B whose plane size is larger than the plane size of the laminated body 72, and the two sheet-like bodies 70A and 70B are made up of each other. It is in a sealed state at one side 70C. The one side 70C in a sealed state may be formed by folding one predetermined sheet, or joining (adhering or welding) two sheet-like bodies 70A and 70B. , Etc.).

  As shown by the arrows in FIG. 7, the laminated body 72 is disposed between the two sheet-like bodies 70A and 70B, and the two sheet-like bodies 70A and 70B are overlapped on three sides other than the one side 70C. The laminated body 72 is accommodated in the packaging material 70 by being folded back.

  FIG. 8 is a plan view showing a package 68 in which a laminate 72 is accommodated by the packaging material 70 shown in FIG.

  In this example, the laminated body 72 is accommodated in the packaging material 70 by folding three sides other than the one side 70C in a state where the two sheet-like bodies 70A and 70B are overlapped. That is, as shown by the arrows in FIG. 7, the laminate 72 is inserted into the packaging material 70, and the inner long side of the laminate 72 is substantially in contact with the inside of one side 70 </ b> C. In this state, first, the front long side of the two sheet-like bodies 70 </ b> A and 70 </ b> B is folded upward, and the leading end side portion of the folded portion and the main body portion of the packaging material 70 are locked by the adhesive tape 74.

  Next, the short sides on both sides of the two sheet-like bodies 70 </ b> A and 70 </ b> B are folded upward, and the leading edge portions of the folded portions and the main body portion of the packaging material 70 are locked with the adhesive tape 74. Thereby, the laminated body 72 is restrained by the one side 70 </ b> C and the folded portions 70 </ b> D, 70 </ b> E, and 70 </ b> F while being housed in the packaging material 70. Therefore, there is no concern that the packaging material is disassembled, and the function as a packaging body can be improved.

  The details of the adhesive tape 74 will be described later.

  FIG. 9 is a perspective view showing a housing method (second example) of the laminated body 72 of the optical sheet for display using the packaging material 76. The laminated body 72 of the optical sheet for display is the same as the first example described above.

  The packaging material 76 of this example is configured by two substantially rectangular sheet-like bodies 76A and 76B having a planar size larger than the planar size of the laminate 72. The two sheet-like bodies 76A and 76B are sealed at two sides 76C and 76D forming a right angle. The laminated body 72 is arranged between the two sheet-like bodies 76A and 76B, and the two sides other than the two sides 76C and 76D in the sealed state are folded back with the two sheet-like bodies 76A and 76B being overlapped. Thus, the laminated body 72 is accommodated in the packaging material 70.

  In addition, when forming the two sheet-like bodies 76A and 76B by folding one predetermined sheet, either of the two sides 76C and 76D in the sealed state can be formed by the folded portion. Moreover, the two sides 76C and 76D in the sealed state can be formed by joining (adhering, welding, etc.) the two sheet-like bodies 76A and 76B. The laminated body 72 is inserted and accommodated in the packaging material 70 as shown by the arrow in FIG.

  FIG. 10 is a plan view showing a package 68 in which the laminate 72 is accommodated by the packaging material 76 shown in FIG.

  In this example, the laminated body 72 is accommodated in the packaging material 76 by folding back two sides other than the two sides 76C and 76D in a state where the two sheet-like bodies 76A and 76B are overlapped. That is, as shown by the arrows in FIG. 9, the laminate 72 is inserted into the packaging material 70 so that the long side of the laminate 72 is substantially in contact with the inside of one side 76 </ b> C, and the left short side is 1 Substantially contact the inside of the side 76D. In this state, first, the front long sides of the two sheet-like bodies 76A and 76B are folded upward, and the leading edge portion of the folded portion and the main body portion of the packaging material 76 are locked by the adhesive tape 74.

  Next, the right short sides of the two sheet-like bodies 76 </ b> A and 76 </ b> B are folded upward, and the front end side portion of the folded portion and the main body portion of the packaging material 76 are locked by the adhesive tape 74. Thereby, the laminated body 72 is restrained by the two sides 76C and 76D and the folded-back portions 76E and 76F while being accommodated in the packaging material 70. Therefore, there is no concern that the packaging material is disassembled, and the function as a packaging body can be improved.

  FIG. 11 is a perspective view showing a housing method (third example) of the laminated body 72 of the optical sheet for display using the packaging material 78. The laminated body 72 of the optical sheet for display is the same as the first example described above.

  The packaging material 78 of this example is constituted by two substantially rectangular sheet-like bodies 78A and 78B having a planar size larger than the planar size of the laminated body 72. The two sheet-like bodies 78A, 78B are sealed with three sides 78C, 78D, 78E. Then, the laminated body 72 is disposed between the two sheet-like bodies 78A and 78B, and one side other than the three sides 78C, 78D, and 78E is folded back with the two sheet-like bodies 78A and 78B being overlapped. Thus, the laminated body 72 is accommodated in the packaging material 70.

  When two predetermined sheet-like bodies 78A and 78B are formed by folding one predetermined sheet, any one of the three sides 78C, 78D, and 78E in a sealed state can be formed by the folded portion. . Also, the three sides 78C, 78D, and 78E in a sealed state can be formed by joining (bonding, welding, etc.) the two sheet-like bodies 78A and 78B. The laminated body 72 is inserted and accommodated in the packaging material 70 as shown by the arrow in FIG. Note that the two sheet-like bodies 78A and 78B shown in FIG. 11 can be formed into a tube shape by a so-called inflation method.

  FIG. 12 is a plan view showing a package 68 in which the laminate 72 is accommodated by the packaging material 78 shown in FIG.

  In this example, the laminated body 72 is accommodated in the packaging material 78 by folding back two sides other than the two sides 78C and 78D in a state where the two sheet-like bodies 78A and 78B are overlapped. That is, as shown by the arrow in FIG. 11, the laminated body 72 is inserted into the packaging material 78, and the long side of the laminated body 72 is substantially in contact with the inside of one side 78D. In this state, first, the front long sides of the two sheet-like bodies 78A and 78B are folded upward, and the front end side portion of the folded portion and the main body portion of the packaging material 78 are locked by the adhesive tape 74.

  Subsequently, the right short sides of the two sheet-like bodies 70 </ b> A and 70 </ b> B are folded upward, and the folded-up portion of the front end side and the main body portion of the packaging material 78 are locked by the adhesive tape 74. Thereby, the laminated body 72 is restrained by the two sides 78C and 78D and the folded portions 78F and 78G while being accommodated in the packaging material 70. Therefore, there is no concern that the packaging material is disassembled, and the function as a packaging body can be improved.

  Next, a configuration example of the above-described adhesive tape 74 will be described. FIG. 13A is a front view showing a basic configuration example of a general adhesive tape 74. FIG.13 (b) is sectional drawing of the adhesive tape 74 shown to Fig.13 (a).

  The adhesive tape 74 has a laminated structure in which the base material 80, the adhesive layer 82, and the separator 84 are sequentially stacked.

  The base material 80 constitutes the base of the pressure-sensitive adhesive tape 74 and supports the pressure-sensitive adhesive layer 82 and the like. This base material 80 is formed of a non-adhesive substance having excellent shape stability. For example, polyester film (PET) or so-called New Epo FGS is preferably used as the base material 80. In addition, when manufacturing or using the adhesive tape 74 in a clean room, it is preferable to use a plastic for the base material 80. According to Lintec Corporation's SS general catalog and Yupo Corporation catalog, when the base material 80 is formed of polyester film, the thickness of the base material 80 is 12 μm to 250 μm, more generally 50 μm to 120 μm. . Moreover, when forming the base material 80 by New Yupo FGS, the thickness of the base material 80 is 60 micrometers-300 micrometers, More generally, it forms in 60 micrometers, 80 micrometers, 95 micrometers, or 110 micrometers.

  The pressure-sensitive adhesive layer 82 forms the pressure-sensitive adhesive portion of the pressure-sensitive adhesive tape 74 and is formed by providing a substance having a desired pressure-sensitive adhesive force on the base material 80. The substance which comprises the adhesive layer 82 is determined based on compatibility with the base material 80 and the separator 84, and the adhesive force required. For example, when the adhesive tape 74 is scheduled to be peeled after being bonded to the object, or when it is scheduled to be bonded again to the object after the peeling, the pressure-sensitive adhesive layer 82 is made to be a weakly adhesive type (re-used). In the case of forming as a peeling type), a so-called acrylic MF or the like can be suitably used as the pressure-sensitive adhesive layer 82. In addition, when it is planned to adhere the adhesive tape 74 to the object semi-permanently, when the adhesive tape 74 once adhered is not scheduled to be peeled off, or after the peeling, the adhesive tape 74 is re-adhered. When the pressure-sensitive adhesive layer 82 is formed as a strong pressure-sensitive adhesive type (permanent adhesion type) as in the case where it is not planned to do so-called acrylic PA-T1, PK, PN, etc. It can be used suitably.

  The separator 84 is provided to protect the pressure-sensitive adhesive layer 82 of the pressure-sensitive adhesive tape 74 before use, and is peeled off from the pressure-sensitive adhesive layer 82 when the pressure-sensitive adhesive tape 74 is used. Therefore, the substance and structure constituting the separator 84 are determined in consideration of the characteristics necessary for protecting the pressure-sensitive adhesive layer 82 and the characteristics necessary for peeling from the pressure-sensitive adhesive layer 82. For example, glassine paper or high-quality paper subjected to polyethylene lamination or polyester (PET) can be suitably used as the separator 84. However, when the separator 84 is used in a clean room, PET that does not generate paper dust is preferable as the separator 84. In addition, when forming the separator 84 with PET, the thickness can be made into about 38 micrometers.

  In the pressure-sensitive adhesive tape according to the present invention, the pressure-sensitive adhesive tape 74 having the above-described basic configuration is improved, and a non-adhesive portion or a weak pressure-sensitive adhesive portion is formed at one end portion or both end portions of the pressure-sensitive adhesive tape 74. By using such an adhesive tape 74 for packaging of the laminate 72 (optical sheet), the laminate 72 can be easily packaged. In addition, when unpacking the packaging, the non-adhesive or weakly-adhesive part plays the role of picking, enabling the unpacking operation to be performed efficiently, and unpacking the optical sheet smoothly with minimal damage. Can do. Here, the “end portion” of the adhesive tape 74 refers to, for example, an end portion based on the peeling direction when the adhesive tape 74 is peeled from the packaging material 70.

  14A to 14D are cross-sectional views showing a configuration example of an adhesive tape 74 in which a non-adhesive part or a weak adhesive part is formed at one end.

  In the example shown in FIG. 14A, a paste-killing portion (non-adhesive portion) 86A having no adhesive force is provided at one end portion on the adhesive layer 82. The paste-killing part (non-adhesive part) 86A will be described later. However, the paste-killing part (non-adhesive part) 86A is a non-adhesive part (non-adhesive part) 86A. Adhesive part) 86A is formed.

  In the example shown in FIG. 14 (b), at one end on the adhesive layer 82, a paste-killing portion (non-adhesive portion) 86A and a paste-killing portion formed inside the paste-killing portion (non-adhesive portion) 86A ( A weak adhesive portion) 86B is provided side by side. Note that the paste-killing portion (weakly adhesive portion) 86B may be one that weakens the adhesive strength of the adhesive tape 74 via the paste-killing portion (weakly adhesive portion) 86B more than the adhesive strength of the adhesive layer 82 itself. Good. Therefore, for example, a paste-killing portion (weakly-adhesive portion) 86B is formed with a material having a lower adhesive strength than the adhesive layer 82, or paste-killing portions (non-adhesive portions) made of a material having no adhesive strength are provided at a plurality of locations. The paste-killing part (weakly adhesive part) 86B is realizable by making it interspersed.

  In the example shown in FIG. 14C, the adhesive layer 82 is not provided at one end on the substrate 80, and the substrate 80 is exposed on the back side of the adhesive tape 74. Thus, in the adhesive tape 74 of this example, a non-adhesive part is formed at one end portion of the adhesive tape 74 by the base material 80. Therefore, the adhesive tape 74 of this example has substantially the same functional configuration as the adhesive tape 74 shown in FIG.

  In the example shown in FIG. 14 (d), in addition to the adhesive layer 82 not being provided at one end on the substrate 80, a paste-killing portion (weak adhesive portion) 86 B is provided at one end on the adhesive layer 82. Is provided. Thus, in the adhesive tape 74 of this example, the non-adhesive part and the weak adhesive part are arranged side by side at one end part of the adhesive tape 74. Therefore, the adhesive tape 74 of this example has substantially the same functional configuration as the adhesive tape 74 shown in FIG.

  FIGS. 15A to 15D are cross-sectional views showing a configuration example of an adhesive tape 74 in which a non-adhesive part or a weak adhesive part is formed at both ends.

  In the example shown in FIG. 15A, a paste-killing portion (non-adhesive portion) 86A is provided at both ends on the adhesive layer 82. In the example shown in FIG. 15 (b), the paste-killing portion (non-adhesive portion) 86A and the paste-killing portion 86A formed inside the paste-killing portion (non-adhesive portion) 86A at both ends on the adhesive layer 82. Part (weakly adhesive part) 86B is provided side by side. In the example shown in FIG. 15C, the adhesive layer 82 is not provided at both ends on the base material 80, and the base material 80 is exposed on the back side of the adhesive tape 74. In addition, in the example shown in FIG. 15D, in addition to the adhesive layer 82 not being provided at both ends on the base material 80, the paste-killing portion (weak adhesive portion) 86B at both ends on the adhesive layer 82. Is provided.

  When the adhesive tape 74 shown in FIGS. 14 (a) to 14 (d) and FIGS. 15 (a) to 15 (d) is used, a non-adhesive portion or a weak adhesive portion at one end portion or both end portions of the adhesive tape 74 is used. Thus, the packaging operation and the unpacking operation can be performed efficiently.

  In the pressure-sensitive adhesive tape according to the present invention, the pressure-sensitive adhesive tape 74 having the above-described configuration is further improved, and a display indicating a non-sticky portion or a weak pressure-sensitive adhesive portion is formed on the pressure-sensitive adhesive tape 74. By using such an adhesive tape 74 for the packaging of the laminate 72 (optical sheet), it is possible to appropriately notify the user of the presence of a non-adhesive part or a weak adhesive part of the adhesive tape 74, so that the packaging operation and opening can be performed. Packing work can be performed more efficiently.

  FIGS. 16A to 16D are diagrams showing a configuration example of the adhesive tape 74 provided with a print layer 88 that indicates the position of the non-adhesive part or the weak adhesive part to the user. 16A to 16D show an example in which a non-adhesive part or a weak adhesive part is provided at both ends of the adhesive tape 74, but the non-adhesive part or only the one end part of the adhesive tape 74 is shown. The same can be said when a weak adhesive part is provided.

  In the example shown in FIG. 16A, a paste-killing portion (non-adhesive portion) 86 </ b> A is provided at both ends on the adhesive layer 82 that constitutes the back surface of the adhesive tape 74, and a base that constitutes the surface of the adhesive tape 74. A printed layer 88 is provided on the material 80 at a location corresponding to a substantial adhesive portion (adhesive portion) of the adhesive tape 74 that is not covered with the paste-killing portion 86A and exposes the adhesive layer 82. . The printed layer 88 has a configuration that directly or indirectly indicates the position of the non-adhesive portion or the weak adhesive portion of the adhesive tape 74 to the user, and indicates the position of the paste killing portion (non-adhesive portion) 86A to the user. If you can. Accordingly, it is also possible to use the printed layer 88 that is printed with characters or the like, or that is solid or halftone with a specific color. Therefore, in the case of this example, it is also possible to form the printed layer 88 on the base material 80 with a display such as “Please hold the edge when peeling”.

  In the example shown in FIG. 16 (b), a paste-killing portion (non-adhesive portion) 86 A is provided at both ends on the adhesive layer 82 that constitutes the back surface of the adhesive tape 74, and a base that constitutes the surface of the adhesive tape 74. A printed layer 88 is provided on the material 80 at a location corresponding to the paste-killing portion 86A. When the print layer 88 is provided at a position corresponding to the non-adhesive portion of the adhesive tape 74 as in this example, for example, the print layer 88 having a display such as “Please bring this when removing” is used as the base material. 80 can be formed.

  In the example shown in FIG. 16C, the base material 80 is exposed without the adhesive layer 82 being provided at both ends on the base material 80 constituting the back surface of the adhesive tape 74, and the surface of the adhesive tape 74 is configured. The printed layer 88 is provided in the location corresponding to the adhesive layer 82 (adhesive part) provided in the center part of the adhesive tape 74 among the base material 80 to perform. Also in this case, the printing layer 88 similar to the case of FIG. 16A can be provided.

  In the example shown in FIG. 16D, the base material 80 is exposed without the adhesive layer 82 being provided at both ends on the base material 80 constituting the back surface of the adhesive tape 74, and the surface of the adhesive tape 74. The printing layer 88 is provided in the location corresponding to the part in which the adhesive layer 82 is not provided among the base materials 80 which comprise. Also in this case, the printing layer 88 similar to that in the case of FIG.

  By using the adhesive tape 74 including the print layer 88 shown in FIGS. 16A to 16D for packaging the laminate 72, the presence of the non-adhesive part or the weak adhesive part of the adhesive tape 74 is indicated to the user. Can be clearly communicated. Therefore, the user can attach the adhesive tape 74 to the packaging material 70 in consideration of the position of the boundary portion between the adhesive portion of the adhesive tape 74 and the non-adhesive portion or the weak adhesive portion. When peeling, the non-adhesive part or the weak adhesive part is securely held by the user. Thereby, the work efficiency of packaging and unpacking of the laminated body 72 can be improved.

  Next, a method for manufacturing such an adhesive tape 74 will be described. In the following example, a method for manufacturing the adhesive tape 74 in which the non-adhesive part or the weak adhesive part of the adhesive tape 74 is realized by a paste-killing part formed on the adhesive layer 82 will be described.

  First, an adhesive tape 74 having a base material 80, an adhesive layer 82, and a separator 84 as shown in FIGS. 13A and 13B is prepared (preparation step). And the separator 84 is peeled from the adhesive layer 82, and the adhesive surface (adhesion surface) of the adhesive layer 82 is exposed (adhesive surface exposure process).

  Then, a paste-killing portion is formed in a portion of the pressure-sensitive adhesive surface of the exposed pressure-sensitive adhesive layer 82 where a non-adhesive portion or a weakly-adhesive portion is planned to be formed (glue kill forming step). The paste-killing portion may be of any material and configuration as long as it has a function of suppressing the adhesive force of the pressure-sensitive adhesive layer 82 in the formed place. For example, when a non-adhesive portion is formed by completely suppressing the adhesive force of the adhesive layer 82 at the formation location, an adhesive containing a paste-killing material such as an OP (overprint) varnish containing silicon is used by a printing plate (solid plate). It may be printed on layer 82. Further, when forming a weak adhesive portion by suppressing a part of the adhesive force of the adhesive layer 82 at the formation location, a paste-killing material such as silicon-containing OP varnish is applied on the adhesive layer 82 by a halftone dot plate. You may print.

  And the separator 84 is again bonded with respect to the adhesive surface of the adhesive layer 82 in which the paste-killing part was formed, and the adhesive tape 74 as a product is provided (separator bonding process). By performing the above-described series of steps continuously, the adhesive tape 74 according to the present invention is continuously manufactured.

  In addition, when not forming the adhesive layer 82, when forming a non-adhesive part or a weak adhesive part in at least one end part of the adhesive tape 74 (for example, FIG.14 (c), FIG.14 (d), FIG.15 (c)). ), FIG. 15 (d), FIG. 16 (c), and FIG. 16 (d)), the adhesive layer 82 is provided at a predetermined position on the base material 80 where the formation of the non-adhesive part or the weak adhesive part is scheduled. The adhesive layer 82 is formed only at a predetermined location on the base material 80 where the adhesive portion is scheduled to be formed, so that the non-adhesive portion or the weak adhesive portion is formed at the end of the adhesive tape 74. Can be formed.

  Next, a mechanism for locking a part of the packaging material 70 and the other part by the adhesive tape 74 will be described.

  FIG. 17 is a cross-sectional view showing a state when the upper packaging material 90 and the lower packaging material 92 of the packaging material 70 are locked by the adhesive tape 74. In the adhesive tape 74 shown in FIG. 17, a paste-killing portion (non-adhesive portion) 86A is provided on one end side of the pressure-sensitive adhesive layer 82, and the paste-killing portion (non-adhesive portion) on the base material 80 constituting the surface. ) A printing layer 88 is provided at a location corresponding to the pressure-sensitive adhesive layer 82 (adhesive part) where 86A is not provided.

  In this example, when the upper packaging material 90 and the lower packaging material 92 are locked by the adhesive tape 74, a portion of the adhesive tape 74 corresponding to the paste-killing portion (non-adhesive portion) 86 </ b> A is gripped by the user. In general, the adhesive tape 74 is first applied to the upper packaging material 90 and then applied to the lower packaging material 92 while pulling the adhesive tape 74.

  On the other hand, at the time of unpacking, it is common that a portion of the adhesive tape 74 corresponding to the paste-killing portion (non-adhesive portion) 86 </ b> A is gripped by the user, and the adhesive tape 74 is gradually peeled off from the packaging material 70. In particular, when the adhesive tape 74 is peeled off from the packaging material 70, the adhesive tape 74 is first peeled off from the upper packaging material 90, and then the adhesive tape 74 is peeled off from the lower packaging material 92. Bending can be effectively prevented and the peeling operation can be performed smoothly.

  Therefore, from the viewpoint of improving the efficiency of the locking operation with the adhesive tape 74 and the peeling operation of the adhesive tape 74, non-adhesive portions such as paste-killing portions 86A and 86B constituting the gripping portions at both ends of the adhesive tape 74 or It is preferable to form a weak adhesive part.

  FIG. 18 is a plan view showing a state in which various types of adhesive tapes 74 are used for the packaging material 70 shown in FIGS. 7 and 8. In this example, the non-adhesive part and / or the weak adhesive part 96 is provided only at one end, and the first adhesive tape 74A in which the printing layer 88 is provided on the surface of the adhesive tape 74 corresponding to the adhesive part 94, and the non-adhesive A second adhesive tape 74B provided with a print layer 88 on the surface of the adhesive tape 74 corresponding to the adhesive part 94, a non-adhesive part and / or a weak adhesive part. 96 is provided only at one end, and the non-adhesive part and / or the weak adhesive part, and the third adhesive tape 74C provided with the printing layer 88 on the surface of the adhesive tape 74 corresponding to the non-adhesive part and / or the weak adhesive part 96. Each part of the packaging material 70 is engaged with a fourth adhesive tape 74D provided with a printing layer 88 on the surface of the adhesive tape 74 corresponding to the non-adhesive part and / or the weak adhesive part 96. Stopped To have. Thus, it is also possible to use a plurality of types of adhesive tapes 74 depending on the bonding location and application.

  Next, a specific dimensional configuration of the adhesive tape 74 will be described.

  Since the adhesive tape 74 is a consumable item, it is desirable to adjust the adhesive tape 74 to the minimum necessary size. On the other hand, since the adhesive tape 74 is often handled by humans, the adhesive tape 74 having a certain size is preferable for handling, and the specific size of such an adhesive tape 74 is the fingertip of a human. Dominated by the size of. In addition, since adhesion and peeling of the adhesive tape 74 are continuous operations, if the size of the adhesive tape 74 is too small, it takes more time than necessary to specify the position where the adhesive tape 74 is attached, which is a viewpoint of work efficiency. Is not preferable. Therefore, in consideration of such circumstances, it is desirable to define a minimum size that does not cause a problem as the size of the adhesive tape 74.

  As a result of earnest research, the present inventor has obtained knowledge that an adhesive tape 74 having the following dimensions is preferable for packaging of the laminate 72 (optical sheet).

For example, regarding the size of the non-glue portion or the end of the paste-killing portion, 5 mm is necessary as the minimum size, and a size of 15 mm is considered to be sufficient for handling (the following “non-adhesive” And / or the longitudinal length L _{4 of the} weakly adhesive part 96 ”). However, there is a possibility that misalignment occurs between the members to be bonded (for example, see the sheet-like bodies 70A and 70B described above) when folded. For this reason, it is more desirable to determine the size of the adhesive tape 74 in consideration of a margin that can cope with such positional deviation.

FIG. 19 is a plan view showing a dimensional configuration of the adhesive tape 74 in which the non-adhesive part and / or the weak adhesive part 96 is provided only at one end. For example, in this case, considering the circumstances described above, the longitudinal length _{L 1} of the adhesive tape 74 is preferably 20Mm～90mm, more preferably 30Mm～60mm. The width direction length _{L 2} of the adhesive tape 74 is preferably 5 mm to 30 mm, more preferably 7Mm～25mm. Also, the longitudinal length _{L 3} of the adhesive portion 94 is preferably 10Mm～60mm, and more preferably 20 mm to 50 mm. Further, the length L ₄ in the longitudinal direction of the non-adhesive part and / or the weak adhesive part 96 is preferably 5 mm to 30 mm, and more preferably 10 mm to 20 mm.

FIG. 20 is a plan view showing a dimensional configuration of the adhesive tape 74 in which the non-adhesive part and / or the weak adhesive part 96 is provided at both ends. In this case, the length L ₁ in the longitudinal direction of the adhesive tape 74 is preferably 30 mm to 100 mm, and more preferably 40 mm to 70 mm. The width direction length _{L 2} of the adhesive tape 74 is preferably 5 mm to 30 mm, more preferably 7Mm～25mm. Also, the longitudinal length _{L 3} of the adhesive portion 94 is preferably 10Mm～60mm. Further, the length L ₄ in the longitudinal direction of the non-adhesive part and / or the weak adhesive part 96 is preferably 5 mm to 20 mm, and more preferably 10 mm to 15 mm.

  Next, the kind of formation method of the non-adhesion part and / or the weak adhesion part 96 and its merit are demonstrated.

  FIG. 21 is a plan view showing an example in which the non-adhesive portion and / or the weak adhesive portion 96 is realized by a glue stripe coat. In the adhesive tape 74 of this example, a separator 84 is attached to the tape body shown in FIG. That is, the non-adhesive part 96 of the adhesive tape 74 is formed by exposing the base material 80 without forming the adhesive layer 82 at both ends on the back side of the adhesive tape 74. A gap can be formed between the adhesive tapes 74.

  In this forming method, usually, a plurality of adhesive tapes 74 are continuously fed out in the feeding direction (see the arrow in FIG. 21), and glue is applied only at a predetermined position in the center of each adhesive tape 74. A portion 94 is formed. In this case, the formation position and the formation direction of the adhesive portion 94 (glue portion) and the non-adhesive portion and / or the weak adhesive portion 96 (non-glue portion) are determined according to the feeding direction of the adhesive tape 74. Therefore, in the adhesive tape 74 of this example, the degree of freedom of forming the non-adhesive part and / or the weak adhesive part 96 is limited by the feeding direction of the adhesive tape 74 as compared with the case where paste killing described later is used. In addition, the adhesive tape 74 of this example tends to have a high manufacturing cost and a long product delivery time, considering the general-purpose degree of equipment.

  FIG. 22 is a plan view showing an example in which the non-adhesive part and / or the weak adhesive part 96 is realized by the paste killing part (non-adhesive part) 86A. In the adhesive tape 74 of this example, a separator 84 is attached to the tape body shown in FIG. That is, the non-adhesive part and / or the weak adhesive part 96 of the adhesive tape 74 is formed by providing the paste-killing part (non-adhesive part) 86A on the adhesive layer 82 at both ends on the back side of the adhesive tape 74. ing.

  As described above, a paste-killing material such as silicon-containing OP varnish is printed on the pressure-sensitive adhesive layer 82 by a printing plate, so that the paste-killing portion (non-sticky portion) 86A can be relatively easily formed on the pressure-sensitive adhesive layer 82. Can be formed. In this case, regardless of the feeding direction of the adhesive tape 74 (see the arrow in FIG. 22), the paste-killing material can be printed on the pressure-sensitive adhesive layer 82, so that the paste-killing portion (non-adhesive portion) 86A is printed. The position (formation position) can be determined and adjusted relatively freely. In addition, the adhesive tape 74 of this example can reduce the manufacturing cost and reduce the delivery time of the product in consideration of the general-purpose degree of equipment.

  In addition, in the example based on above-mentioned FIG.21 and FIG.22, although the example which forms a non-adhesion part was demonstrated, the same thing can be said also when forming a weak adhesion part. Moreover, the manufacturing method of the above-mentioned adhesive tape 74 is only an illustration, and it is possible to use arbitrary methods.

  The above items are merely examples of various aspects of the present invention, and various modifications such as design changes can be added based on the knowledge of those skilled in the art, and known elements can be applied. Such various aspects can also be included in the scope of the present invention.

  For example, as shown in FIG. 23, a non-adhesive tag 97 for causing the non-adhesive part and / or the weak adhesive part 96 may be provided. The tag 97 includes a tag main body 98 extending in a straight line, and a tag knob 99 provided at an end of the tag main body 98 and protruding from the non-adhesive portion and / or the weak adhesive portion 96 of the adhesive tape 74. The tag 97 is disposed on the back surface side of the adhesive tape 74 on the side opposite to the base material 80 via the adhesive layer 82. The tag main body 98 extends across the adhesive portion 94 and the non-adhesive portion and / or the weak adhesive portion 96 and is fixedly supported by being attached to the adhesive layer 82 of the adhesive portion 94. The tag knob 99 is a part that is actually picked by the user, and has a shape and a size that the user can easily pick. When peeling the adhesive tape 74 from the packaging material 70, the user can easily cause the non-adhesive part and / or the weak adhesive part 96 by using the tag 97, and the adhesive tape 74 can be peeled off smoothly. Can do.

  In the case where the above-described tag 97 is provided, the tag 97 itself serves as a non-adhesive part. Therefore, the non-adhesive part and / or the weak adhesive part 96 as shown in FIG. It does not have to be formed.

  In addition, among the tags 97, the back surface of the tag knob 99 (the side where contact with the packaging material is scheduled) is formed as a non-adhesive portion, and part or all of the back surface of the tag body 98 is formed as a weak adhesive portion. May be.

  Further, the tag 97 may be formed as a part of the separator 84.

  In the case where the tag 97 is provided, the forming direction of the tag 97 may be determined in accordance with the feeding direction when the adhesive tape 74 is manufactured. In addition, foreign matter may be mixed between the tag 97 and the adhesive layer 82. Furthermore, since it is necessary to perform one or more punching processes or the like to form the tag 97, the processing process is likely to be complicated. Therefore, in consideration of these circumstances, it is preferable to provide the tag 97 efficiently and accurately.

  In each of the above-described embodiments, the example in which the printing layer 88 is provided on the base material 80 that forms the surface of the adhesive tape 74 when viewed from the user side has been described. ) May be provided with a printing layer 88. For example, the printed layer 88 can be formed on the back surface of the adhesive tape 74 on the paste-killing portions 86A and 86B and the base material 80 that form the non-adhesive portion or the weak adhesive portion.

  Moreover, the display in the printing layer 88 is not limited to the above-mentioned thing, A character, a symbol, a color, a pattern, etc. may be combined suitably. For example, among the base material 80 constituting the surface of the adhesive tape 74, red coloring (solid coating) is displayed at a position corresponding to the non-adhesive part or the weak adhesive part of the adhesive tape 74, and the adhesive part of the adhesive tape 74 is displayed. You can also display "Please bring the red part" at the corresponding location.

It is sectional drawing which shows the structure of an example of the optical sheet for displays. It is sectional drawing which shows the structure of the other example of the optical sheet for displays. It is sectional drawing which shows the structure of the other example of the optical sheet for displays. It is sectional drawing which shows the structure of the other example of the optical sheet for displays. It is sectional drawing which shows the structure of the other example of the optical sheet for displays. It is sectional drawing which shows the structure of the other example of the optical sheet for displays. It is a perspective view which shows the accommodation method (1st example) of the laminated body (optical sheet) of the optical sheet for a display which uses a packaging material. It is a top view which shows the package which accommodated the laminated body with the packaging material shown in FIG. It is a perspective view which shows the accommodation method (2nd example) of the laminated body of the optical sheet for displays which uses a packaging material. It is a top view which shows the package which accommodated the laminated body with the packaging material shown in FIG. It is a perspective view which shows the accommodation method (3rd example) of the laminated body of the optical sheet for displays which uses a packaging material. It is a top view which shows the package which accommodated the laminated body with the packaging material shown in FIG. (A) is a front view which shows the general basic structural example of an adhesive tape, (b) is sectional drawing of the adhesive tape shown to (a). (A)-(d) is sectional drawing which shows the structural example of the adhesive tape in which the non-adhesion part or the weak adhesion part was formed in the end. (A)-(d) is sectional drawing which shows the structural example of the adhesive tape in which the non-adhesion part or the weak adhesion part was formed in both ends. (A)-(d) is sectional drawing which shows the structural example of the adhesive tape provided with the printing layer which shows a user the position of a non-adhesion part or a weak adhesion part. It is sectional drawing which shows the state at the time of latching the upper packaging material and lower packaging material of a packaging material with an adhesive tape. It is a top view which shows the state by which various types of adhesive tape were used with respect to the packaging material shown to FIG. 7 and FIG. It is a top view which shows the dimension structure of the adhesive tape in which the non-adhesion part and / or the weak adhesion part were provided only in the end. It is a top view which shows the dimension structure of the adhesive tape in which the non-adhesion part and / or the weak adhesion part were provided in both ends. It is a top view which shows the example which implement | achieves the non-adhesion part of an adhesive tape by the stripe coating of glue. It is a top view which shows the example which implement | achieves the non-adhesion part of an adhesive tape by the paste killing part (non-adhesion part). It is a top view which shows one modification of an adhesive tape.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Display optical sheet, 12 ... 1st diffuser sheet, 14 ... 1st prism sheet, 16 ... 2nd prism sheet, 18 ... 2nd diffuser sheet, 20, 30, 40, 50, 60 ... Display Optical sheet, 70, 76, 78 ... packaging material, 72 ... laminate, 74 ... adhesive tape, 80 ... base material, 82 ... adhesive layer, 84 ... separator, 86A ... paste-killing part (non-adhesive part), 86B ... paste killing part (weakly adhesive part), 88 ... printed layer, 90 ... upper packaging material, 92 ... lower packaging material, 94 ... adhesive part, 96 ... non-adhesive part and / or weak adhesive part, 97 ... tag, 98 ... tag body, 99 ... tag picking

Claims (6)

A packaging material for an optical sheet for accommodating the optical sheet therein,
Comprising two substantially rectangular sheet-like bodies having a planar size larger than the planar size of the optical sheet;
The two sheet-like bodies are joined at least on one side,
The optical sheet is placed between the two sheet-like bodies stacked, and the two sheet-like bodies are folded back at sides other than the at least one side in the joined state. A packaging material for an optical sheet, which is accommodated. An optical sheet;
A packaging material that houses the optical sheet therein, and an optical sheet packaging body comprising:
The packaging material has two substantially rectangular sheet-like bodies whose plane size is larger than the plane size of the optical sheet,
The two sheet-like bodies are joined at at least one side,
The optical sheet is disposed between the two sheet-like bodies stacked, and the two sheet-like bodies are folded back on the side other than the at least one side in a joined state, whereby the optical sheet is wrapped in the packaging. An optical sheet packaged body accommodated in a material.   3. The optical sheet according to claim 2, wherein the folded portion of the two sheet-like bodies is locked to the other portion of the two sheet-like bodies by an adhesive tape. Packaging body. A packaging material sealing adhesive tape for locking a part of a packaging material for housing an optical sheet and another part,
A packaging material sealing adhesive tape, wherein at least one end of the packaging material sealing adhesive tape forms a non-adhesive part or a weak adhesive part.   5. The packaging material sealing adhesive tape according to claim 4, wherein the packaging material sealing adhesive tape is formed with an indication indicating the non-adhesive part or the weak adhesive part.   The pressure-sensitive adhesive tape for sealing packaging material according to claim 4 or 5, further comprising a non-adhesive or weak adhesive tab portion protruding from the non-adhesive portion or the weak adhesive portion.

Images