JP2017132480A - Packaging body, packaging method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging body and a packaging method which can prevent deformation such as warpage and bending caused by moisture absorption of a body to be packaged being an optical member such as a light guide plate made from a resin.SOLUTION: A packaging body 10 packaging a light guide plate 131 made from a resin as a body 130 to be packaged includes: a bag-like first packaging portion 110 having at least a base material layer and a metal layer laminated on one surface side of the base material layer, and a second packaging portion 120 that is positioned on the side of the body to be packaged rather than the first packaging portion 110 and protects the first packaging portion 110 from damage by the body 130 to be packaged. The packaging body 10 packages the body 130 to be packaged with the second packaging portion 120, then inserts the packaged body to be packaged into the bag-like first packaging portion 110 to seal an opening, and thereby seals the body 130 to be packaged.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a package and a packaging method.

In various display devices and the like, resin optical members are widely used as lens sheets and light guide plates. The resin-made optical member may be transported and stored after being molded by various molding methods, and may be assembled to various display devices after a long time has passed after molding.
In that case, the resin-made optical member is packaged by various packaging members in order to prevent wrinkles, breakage, and the like (see, for example, Patent Documents 1 and 2).

JP 2011-154256 A JP 2008-081190 A

When such a resin optical member is transported and stored after molding for a long period of time, it may absorb moisture and cause deformation such as warping and deflection. Optical members such as a lens sheet and a light guide plate are formed by arranging a plurality of fine unit optical shapes on the surface thereof in order to enhance optical characteristics. For this reason, deformations such as warping and deflection cause a problem that the performance of the optical member is greatly impaired and the quality of the product is deteriorated.
The packaging storage methods and packaging materials described in Patent Documents 1 and 2 do not take measures against such deformation due to moisture absorption.

  An object of the present invention is to provide a packaging body and a packaging method capable of preventing deformation such as warpage and deflection due to moisture absorption of a body to be packaged which is a resin optical member such as a light guide plate.

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 packaging body in which a resin optical member (131) is packaged as a packaged body (130), and at least on the base layer (111) and one surface side of the base layer. A bag-shaped first packaging part (110) provided with a laminated metal layer (113), and a second packaging part (positioned closer to the package body than the first packaging part) and protecting the first packaging part ( 120, 220), and a package (10, 20).
The invention according to claim 2 is the package (10, 20) according to claim 1, wherein the metal layer (113) contains aluminum.
According to a third aspect of the present invention, in the package according to the first or second aspect, the second wrapping portion (120) is made of a resin and is at least one of polyethylene, polypropylene, polyester, nylon, and polyvinyl chloride. It is a package (10, 20) characterized by containing one.
According to a fourth aspect of the present invention, in the packaging body according to any one of the first to third aspects, the first packaging portion (110) and the second packaging portion (220) are laminated. The package (20) is characterized in that at least a part thereof is joined.
The invention of claim 5 is the packaging body according to any one of claims 1 to 4, wherein the packaged body (130) is a light guide plate (131) in which a plurality of sheets are laminated, Is a package (10, 20).
The invention of claim 6 is a packaging method for packaging a resin optical member (131) as a packaged body (130), and at least on the base layer (111) and one surface side of the base layer. A bag-shaped first packaging part (110) comprising a laminated metal layer (113), and positioned on the side of the packaging body relative to the first packaging part, wraps the packaging body, and the first packaging part A sheet-like second packaging part (120) for protecting the packaging body (10), a second packaging part packaging step for packaging the packaged body in the second packaging part, and the second packaging After the part wrapping process, the packaged body wrapped by the second wrapping part is inserted from the opening (10d) of the first wrapping part, and after the insertion process, the opening is sealed. And a sealing process for stopping.
The invention of claim 7 is a packaging method for packaging a resin optical member (131) as a packaged body (130), and at least on the base layer (111) and one surface side of the base layer. A bag-shaped first packaging part (110) having a laminated metal layer (113), and a second packaging which is integrally laminated on the packaged body side of the first packaging part and protects the first packaging part. An opening step (10d) of the first packaging portion and an insertion step of inserting the packaged body, and the opening portion after the insertion step. A packaging method characterized by comprising a sealing step of sealing.
The invention according to claim 8 is the packaging method according to claim 6 or claim 7, further comprising a deaeration step for degassing the inside of the package after the insertion step. is there.

  ADVANTAGE OF THE INVENTION According to this invention, there can exist an effect that deformation, such as a curvature and a bending, by the to-be-packaged body which is resin-made optical members, such as a light-guide plate, absorbs moisture can be prevented.

It is a figure which shows the package 10 of 1st Embodiment. It is sectional drawing in the state which the packaging body 10 of 1st Embodiment packaged the to-be-packaged body 130. FIG. It is a figure which shows the state before use of the 1st packaging part 110 of 1st Embodiment. It is a figure which shows the layer structure of each sheet-like member 110A and the 2nd packaging part 120 which form the 1st packaging part 110. FIG. It is a figure explaining the packaging method using the package 10 of 1st Embodiment. It is a figure explaining the measuring method of the curvature amount of the light-guide plate 131 by the clearance gauge G. FIG. It is a figure which shows the mode of the side surface of the to-be-packaged body 130A and 10B of Example and the comparative example which were packaged by these. It is a figure which shows the mode of a deformation | transformation of the light-guide plate 131 typically. It is a figure explaining the package 20 of 2nd 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 addition, in this specification and the like, terms such as plate and sheet are used, but these are generally used in the order of thickness in the order of plate, sheet, and film. This is also used in the specification. However, such proper use has no technical meaning, and the terms “plate”, “sheet”, and “film” can be appropriately replaced. For example, the optical sheet may be an optical film or an optical plate.
Furthermore, numerical values such as dimensions and material names of each member 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.

(First embodiment)
FIG. 1 is a diagram illustrating a package 10 according to the first embodiment. 1 shows the package 10 in a state in which the package 130 is packaged, and FIG. 1 (a) is a view of the package 10 in that state as viewed from the thickness direction, and FIG. 1 (b). These are the perspective views of the package 10 of the state.
FIG. 2 is a cross-sectional view of the packaging body 10 according to the first embodiment in a state where the packaging body 130 is packaged. FIG. 2 shows a cross section cut along arrows A1-A2 shown in FIG. In FIG. 2, there is a space between the package body 130 and the second packaging part 120 and between the second packaging part 120 and the first packaging part 110 for easy understanding. However, in practice, a space may be formed between them, or a close form may be adopted.
Drawing 3 is a figure showing the state before use of the 1st packing part 110 of a 1st embodiment. In FIG. 3, the mode which looked at the 1st packaging part 110 from the thickness direction is shown.
The package 10 includes a first packaging unit 110 and a second packaging unit 120 located inside the first packaging unit 110 (on the package body 130 side).

As shown in FIG. 3 etc., the 1st packaging part 110 is a rectangular bag shape. As shown in FIGS. 1 and 2, the first packaging part 110 is a member that is positioned on the outermost side of the packaging body 10 and forms the exterior of the packaging body 10.
The first packaging part 110 is a bag-like member formed by laminating two rectangular sheet-like members 110A and joining a part thereof.
The first packaging part 110 has two short sides 10a and 10d and two long sides 10c. As shown in FIG. 1, the first packaging unit 110 is sealed by bonding four sides by heat sealing or the like in a state where the package body 130 is packaged therein. In addition, as shown in FIG. 3, before the packaged body is packaged inside, that is, before use, three sides (side 10a, two long sides 10c) are sealed, and side 10d is sealed. In other words, the first packaging unit 110 has an opening into which the package body 130 packaged in the second packaging unit 120 can be inserted.
The first packaging unit 110 can seal the inside by housing the package body 130 and the like and then sealing the side 10d with a heat seal or the like.
The side 10a and side 10c may be sealed using a method other than heat sealing, such as bonding with an adhesive or the like.

When the first packaging part 110 is viewed from the thickness direction, a male and female occlusal chuck 10b that can be opened and closed is formed on the center side of the first packaging part 110 with respect to the side 10a. The chuck 10b is made of resin, and is formed linearly on the inner surface of the first packaging part 110 along the side 10a.
The chuck 10b has a female part (not shown) in the vicinity of the side 10a of one of the two sheet-like members 110A forming the first packaging part 110, and is not located at a position facing the female part of the other member. The male part shown is formed. The chuck 10b is closed in advance before the first packaging part 110 is used.

When opening the first packaging part 110 of the packaging body 10, the operator cuts the joined part of the side 10 a and holds the vicinity of the side 10 a by hand to form two sheets forming the first packaging part 110. The occlusion is released by pulling the shaped member 110A apart, and the chuck 10b is opened. By opening the chuck 10b, the side 10a side becomes an opening of a new first packaging part 110, and the packaged body 130 packaged in the second packaging part 120 can be taken out.
The chuck 10b can be easily closed by the operator engaging the female part and the male part, for example, by manually aligning the position of the female part and the male part and pressing the hand part. Therefore, after the opening, the opening on the side 10a side can be opened and closed by the chuck 10b.
Note that the chuck 10b is not limited to the above-described form, and for example, two or more chucks 10b may be formed in parallel. Moreover, the 1st packaging part 110 is good also as shapes other than a rectangle according to the shape of the to-be-packaged body 130. FIG.

FIG. 4 is a diagram illustrating a layer configuration of each sheet-like member 110 </ b> A and the second packaging part 120 forming the first packaging part 110. FIG. 4A shows a cross section of the sheet-like member 110 </ b> A forming the first packaging part 110, and FIG. 4B shows a cross section of the second packaging part 120. In FIG. 4, the upper side in the vertical direction in the drawing is the outer side (surface side) of the package body 10, and the lower side is the inner side of the package body 10 (the package body 130 side).
As shown in FIG. 4A, the sheet-like member 110A forming the first packaging part 110 is formed by laminating a plurality of layers. The first packaging unit 110 includes a base material layer 111, a dry laminate layer 112, a metal layer 113, a bonding layer 114, a resin layer 115, and a sliding material layer 116 in order from the outside.

The base material layer 111 is a resin layer, and is a layer that becomes a base material (base) of the first packaging unit 110. The base material layer 111 has a function of preventing the metal layer 113 from being damaged by an impact or the like from the outside of the first packaging part 110. The base material layer 111 preferably has sufficient strength, heat resistance, printing adaptability, and the like.
As such a base material layer 111, a sheet-like member made of a polyolefin-based resin such as polyester, PE (polyethylene), PP (polypropylene), PA (nylon) or the like is preferable, made of PET (polyethylene terephthalate), and particularly stretched A sheet-like member made of PET is suitable.

The dry laminate layer 112 is a layer formed on one side of the base material layer 111. The dry laminate layer 112 improves adhesion between the base material layer 111 and the metal layer 113 when a metal such as aluminum of the metal layer 113 to be described later is deposited on the surface of the base material layer 111, and peels between layers. It has a function to suppress.
This dry laminate layer 112 is an adhesive for lamination (polyvinyl acetate adhesive, polyacrylate adhesive, polyester adhesive, phenolic resin, cyanoacrylate adhesive, etc. used in the dry lamination method or the like. , Ethylene copolymer adhesive, epoxy adhesive, silicone adhesive, inorganic adhesive, etc.).

The metal layer 113 is a layer formed of metal and laminated on one surface side of the base material layer 111 via the dry laminate layer 112. The metal layer 113 is a layer that has high moisture resistance (that is, low moisture permeability) and suppresses moisture absorption of the optical member packaged in the first packaging unit 110. The metal layer 113 preferably has a high gas barrier property and light shielding property.
The metal layer 113 is formed of an aluminum foil, an aluminum vapor deposition film, an alumina vapor deposition film, or the like.
The metal layer 113 preferably has a thickness of 5 μm or more in order to exhibit sufficient moisture resistance. Moreover, it is preferable that the metal layer 113 is 20 micrometers or less in thickness from a viewpoint of the improvement of workability | operativity as flexibility or a packaging material.

The bonding layer 114 is a layer that is formed between the metal layer 113 and the resin layer 115 and bonds them together.
The bonding layer 114 is formed of general-purpose various adhesives. As an adhesive for forming the bonding layer 114, for example, an adhesive made of polyethylene, polypropylene, polyester, EVA (polyethylene vinyl acetate) resin, or the like is preferably used.

The resin layer 115 is a layer provided on the opposite side of the bonding layer 114 from the metal layer 113. The resin layer 115 is a layer having functions such as preventing damage to the metal layer 113 due to impact from the inside of the bag, preventing peeling of the metal layer 113, and preventing oxidation of the metal layer 113. In addition, the resin layer 115 is a layer that exhibits a sealing property when heat sealing the first packaging unit 110 described later.
The resin layer 115 is preferably a sheet-like member made of, for example, LLD (Linear Low Density Polyethylene). Further, as the resin layer 115, a sheet-like member made of CPP (unstretched polypropylene) can be used.
The resin layer 115 preferably has a sealing property. Further, the resin layer 115 may have a light shielding property or the like.

A sliding material layer 116 is formed on the inner surface of the resin layer 115 (the surface opposite to the bonding layer 114). The sliding material layer 116 has a function for preventing the resin layers 115 from sticking to each other in the state before use in the first packaging part 110 formed in a bag shape and making the first packaging part 110 easy to open. Have.
The sliding material layer 116 is formed by applying a powdery sliding material on the surface of the resin layer 115. As the powdery sliding material, for example, a powdery member containing an inorganic component such as a hydrocarbon component or silica, a carbide powder such as corn starch, or the like is suitable.

The 2nd packaging part 120 is a sheet-like resin-made member, and is a member which protects the 1st packaging part 110 from damage. As for the 2nd packaging part 120, the corner | angular part of the to-be-packaged body 130 hits the 1st packaging part 110, a fine hole (pinhole) opens from the inner side to the 1st packaging part 110, or a streak-like tear is made. The first wrapping part 110 has a function of preventing damage.
The second packaging unit 120 has a size that can wrap the entire package body 130. In addition, the 2nd packaging part 120 is good also as a bag shape not only in a sheet form.

Second packaging part 120 is formed of a resin containing at least one of polyethylene, polypropylene, polyester, nylon, and polyvinyl chloride.
The second packaging part 120 preferably has a thickness of 30 μm or more so as not to damage the first packaging part 110 by hitting the corners of the body 130 to be packaged. Moreover, the thickness of the 2nd packaging part 120 is 150 micrometers or less so that it may have sufficient flexibility and the operation | work at the time of packaging the to-be-packaged body 130 with the 2nd packaging part 120 becomes easy. preferable.
In the present embodiment, the example in which the second packaging unit 120 is a single layer is shown. However, the present invention is not limited to this, and a multilayer structure in which a plurality of resin layers and the like are stacked may be used.
Moreover, the 2nd packaging part 120 has what has antistatic property. Since the second packaging unit 120 has antistatic properties, it is possible to prevent the package body 130 and the second package unit 120 from being rubbed and in close contact with each other, making it difficult to remove the package body 130.
As such a 2nd packaging part 120, the additive-free antistatic film made from an olefin type special compound is suitable.

The package body 130 is a resin-made optical member packaged in the package body 10. The package 130 has a substantially cubic shape in which a plurality of light guide plates 131 are stacked in the thickness direction. The package body 130 is transported and stored in a state of being packaged in the package body 10. Note that the shape of the package 130 is not limited to a substantially cubic shape.
The light guide plate 131 is a plate-like member formed by arranging a plurality of unit optical shapes on one side, and is formed of an acrylic resin.
After the light guide plate 131 is extruded, protective sheets (not shown) are integrally laminated on the front and back surfaces thereof and cut into a predetermined size. Accordingly, the protective sheet has the same size as the front and back surfaces of the light guide plate 131, and the light guide plate 131 has exposed end faces and corners parallel to the thickness direction.

(Packaging method)
FIG. 5 is a diagram illustrating a packaging method using the packaging body 10 of the first embodiment.
First, as shown in FIGS. 5A and 5B, a predetermined number of light guide plates 131 cut to a predetermined size are stacked in the thickness direction to form a cube-shaped package body 130.
At this time, as described above, the front and back surfaces of the light guide plate 131 are protected by the protective sheet, and the end surfaces and corner portions are exposed. Therefore, although the uppermost surface and the lowermost surface of the package body 130 are protected by the protective sheet, the side surface 130a of the package body 130 is formed by the end surface of the light guide plate 131, and thus is exposed. . Moreover, it has the form which the corner | angular part of the to-be-packaged body 130 where the side surface 13a crosses was exposed.

  As shown in FIGS. 5C, 5D, and 5E, the package body 130 is disposed on the spread second packaging portion 120, and the second package is formed along the outer shape of the package body 130. The part 120 is folded, the whole package body 130 is wrapped with the second packaging part 120, and the second packaging part 120 is appropriately fastened with a tape material (not shown) having an adhesive layer on one side. Thereby, the to-be-packaged body 130 is packaged by the 2nd packaging part 120 (2nd packaging part packaging process). When the packaging body 130 is packaged by the second packaging section 120, there may be a region where the second packaging section 120 is folded so that the packaging body 130 is not exposed due to the second packaging section 120 being displaced.

  Next, as shown in FIG.5 (f), the to-be-packaged body 130 packaged by the 2nd packaging part 120 is inserted in the inside of the 1st packaging part 110 from the edge | side 10d used as an opening part (insertion process). ), The side 10d is sealed by heat sealing or the like (sealing step). Thereby, the package body 130 is packaged in the package body 10 and sealed. At this time, as described above, the side 10a of the first packaging part 110 is sealed, and the chuck 10b is closed.

In addition, you may deaerate the inside of the package body 10 before sealing the opening part of the edge | side 10d. By performing deaeration, it is possible to prevent the package 130 from absorbing moisture contained in the air present in the package 10.
Moreover, the package 10 and the to-be-packaged body 130 adhere | attach by performing deaeration. As a result, the packaging body 10 swells when the packaging body 10 (the first packaging unit 110) is damaged and the outside air enters the packaging body 10, so that the packaging body 10 is damaged or the packaged body 130 absorbs moisture. It is possible to easily determine whether or not there is a possibility. Therefore, the operator or the like can discriminate the package body 130 that may have absorbed moisture before opening the package body 10.

In addition, since the package 10 and the package 130 are brought into close contact with each other by deaeration, the package 130 is prevented from moving in the package 10 due to vibration during transportation, and the package 10 is prevented from being damaged. Have.
When opening the package 10, as shown in FIG. 5 (h), the operator cuts the sealed portion of the side 10a of the first packaging part 110 with a cutter or the like and opens the chuck 10b. Thus, the packaged body 130 that has been opened and packaged in the second packaging unit 120 can be taken out.

Conventionally, in order to prevent warping or deflection of the light guide plate, etc. due to moisture absorption, conventionally, a resin-made packaging body is used and packaged with a sheet-like moisture absorbent, or an optical member made of resin such as aluminum. There is known a method of sealing in a bag-like packaging body (packaging body) having a low moisture permeability having a metal film.
However, the sheet-like hygroscopic agent may be insufficient for long-term storage, and there is a problem that deformation due to moisture absorption occurs in the optical member. When an optical member is put in a packaging body having a metal film and packaged, there is a problem in that the corner of the optical member hits the packaging body to make a hole during transportation or the like, thereby causing deformation of the optical member due to moisture absorption.

In addition, a bag-like package having a metal film may have a powdery sliding material applied to the inside of the bag in order to prevent adhesion inside the bag, and the sliding material is applied to the enclosed optical member. There was a problem that it adhered and the quality of the optical member was lowered.
However, by using the packaging body 10 and the packaging method as described above, deformation due to moisture absorption of the light guide plate 131 that is the package body 130 can be significantly suppressed, and adhesion of foreign matters such as a sliding material can be prevented. The high quality of the light plate 131 can be maintained.

Here, the package body 10A of the example of this embodiment and the package body 10B of the comparative example are prepared, and the package bodies 130 are respectively packaged by the package body 10A of the example and the package body 10B of the comparative example. The state of breakage of each package when transported and the presence or absence of deformation or adhesion of foreign matter due to moisture absorption of the package 130 (light guide plate 131) were compared.
The 1st packaging part 110 and the 2nd packaging part 120 of 10 A of package bodies of an Example are as follows.

The first packaging unit 110 uses a three-sided bag with an aluminum chuck (Strong Pack PAL-2840ZH manufactured by Meiwa Sansho Co., Ltd.). The material, thickness, etc. of each layer of the first packaging part 110 of this embodiment are as follows.
The base material layer 111 is made of PET resin and has a thickness of 12 μm.
The dry laminate layer 112 is made of a polyester resin.
The metal layer 113 is formed of an aluminum vapor deposition film having a thickness of 7 μm.
The bonding layer 114 is made of polyethylene resin and has a thickness of 20 μm.
The resin layer 115 is made of LLD and has a thickness of 50 μm.
The sliding material layer 116 is made of a hydrocarbon material, an inorganic material such as silica, or a powder such as corn starch (carbide).
The outer dimension of the first packaging unit 110 is 400 × 280 mm, and the inner dimension is 370 × 260 mm.
The second packaging unit 120 uses a non-additive antistatic film (CA-DMPE Mulwa Bags Co., Ltd.) made of 0.4 mm in thickness and made of an olefin-based special compound.
The tape material is a member (manufactured by Nichiban) having an adhesive layer made of natural rubber on one side of a base material made of cellulose resin (cellophane), and its width is 12 mm.

The package 10B of the comparative example is a package that is not provided with the second packaging part 120 and is formed only by the first packaging part 110. The 1st packaging part 110 is a member substantially the same as the 1st packaging part 110 of the above-mentioned embodiment.
The package 130 is obtained by stacking 50 light guide plates 131 in a flat stack, and has a long side of 300 mm, a short side of 180 mm, and a thickness of 33 mm.
The light guide plate 131 is made of acrylic resin, and is formed by arranging a plurality of fine unit optical shapes on both surfaces. The light guide plate 131 has a long side of 300 mm, a short side of 180 mm, and a thickness of 0.6 mm. When the light guide plate 131 is laminated as a packaged body, both sides of the light guide plate 131 are integrally laminated with a protective sheet (thickness: 0.03 mm) made of polypropylene resin, and the light guide plate includes both sides of the protective sheet. The thickness of 131 is 0.66 mm.

The evaluation method of the packaging bodies 10A and 10B of Examples and Comparative Examples will be described.
Four packaging bodies 10A and 10B of Examples and Comparative Examples are prepared, and each of the packaging bodies 130 in which 50 light guide plates 131 are laminated is packaged in an environment of room temperature 25 ° C. and humidity 60%. Then, the packaging body 10A of the four examples and the packaging body 10B of the four comparative examples are transported by ship for 48 hours in an environment of a room temperature of 35 ° C. and a humidity of 80%, and an environment of a room temperature of 25 ° C. and a humidity of 60%. Store under for 5 days.
Then, first, about the package 10A of an Example and a comparative example, 10B, the presence or absence of the damage of the 1st packaging part 110 used as an exterior is visually evaluated. In Examples and Comparative Examples, one of the four packaging bodies is good when there is no damage such as a pinhole in the first packaging part 110, and no case where there is any damage such as a pinhole.

Next, the packaging bodies 10A and 10B of the four examples and the comparative examples are opened, and the presence or absence of deformation such as warpage or deflection of the light guide plate 131 which is each packaged body 130 is visually observed and the amount of warpage is measured using a clearance gauge. Evaluate by
FIG. 6 is a diagram for explaining a method of measuring the amount of warpage of the light guide plate 131 by the clearance gauge G.
The package 10A of the four examples and the package 10B of the four comparative examples are each opened, and one of the light guide plates 131 stacked as each package 130 is positioned at the top of the stack, and the bottom 1 is positioned, and the amount of warpage is measured in a state where protective sheets (not shown) laminated on both surfaces are peeled off. That is, two light guide plates 131 (a total of eight light guide plates 131 for the example and a total of eight light guide plates 131 for the comparative example) are measured for each of the packaging bodies 10A and 10B of the example and the comparative example. To do.

As shown in FIG. 6A, a light guide plate 131 to be measured is placed on the surface plate S, and a gap gauge G is inserted between the light guide plate 131 and the surface plate S, so that the surface of the surface plate S and the light guide plate The dimension d in the vertical direction (normal direction of the surface of the surface plate) between the surface 131 of the surface plate S of 131 is measured. As shown in FIG. 6B, the measurement points P of the warpage amount are a total of eight places, that is, the end portion and the central portion of each side of the light guide plate 131.
If there is at least one point where the dimension d is larger than 0.5 mm among the eight places, it is determined that an unacceptable warp has occurred and is impossible. When the clearance gauge cannot be inserted between the surface plate S and the light guide plate 131, the dimension d = 0 mm, and it is determined that the warp has not occurred and is determined to be good. Moreover, when the dimension d is 0.5 mm or less, the warpage is within an allowable range, and it is determined as good.
In the example and the comparative example, when one of the eight light guide plates 131 is determined to be impossible, it is determined that the deformation of the light guide plate 131 is not possible.

Next, the presence / absence of adhesion of foreign matter to the package body 130 packaged in each package is evaluated. The adhesion of foreign matter is evaluated by visual observation and evaluation using a foreign matter removal sheet (not shown). In the package 130A of the packaging bodies 10A and 10B of each of the four examples and comparative examples described above, the presence or absence of foreign matters is first evaluated visually, and then the foreign matter removal sheet is evaluated. Do.
In the visual evaluation, it is visually evaluated whether or not a foreign substance is attached to the side surface 130a (the end surface of the light guide plate 131) of the package 130.
Next, in the evaluation using the foreign matter removal sheet, the foreign matter removal sheet (used by cutting a conductive urethane sheet-like member (Atom Kosan Co., Ltd.) to about 50 × 100 mm) is used. It sticks and peels on the four side surfaces 130a, and visually confirms and evaluates whether or not foreign matter is adhered to the surface of the foreign matter removal sheet. This foreign matter removal sheet is colored in a dark green color or the like, and is suitable for visual detection of foreign matters that are mainly white.
In these evaluations, the case where no adhesion of foreign matter is confirmed in either case is good, and the case where adhesion of foreign matter is confirmed in either one is not allowed. Further, in the examples and comparative examples, it is determined that any one of the four packaging bodies 10A and 10B that is determined to be improper with respect to the adhesion of foreign matter to the package body 130 (light guide plate 131) is determined to be impossible.

Table 1 is a table | surface which shows the evaluation result of package 10A, 10B of an Example and a comparative example.
FIG. 7 is a view showing the side surfaces of the packaging bodies 10A and 10B of the example and the comparative example, and the respective packaging bodies 130 packaged in these.
Fig.7 (a) is an external appearance of the package 10A of an Example, FIG.7 (b) is an external appearance of the package 10B of a comparative example. Moreover, FIG.7 (c) is a mode of the side surface of the to-be-packaged body 130 packaged in the packaging body 10A of an Example, FIG.7 (d) is the to-be-packaged body packaged in the packaging body 10B of a comparative example. It is the state of 130.
FIG. 8 is a diagram schematically showing how the light guide plate 131 is deformed. FIG. 8A shows a packaged body 130 having a light guide plate 131 that has undergone deformation such as warping or bending, and FIG. 8B shows the light guide plate 131 that has undergone deformation such as warping or bending. .

As shown in Table 1 and FIG. 7 (b), the packaging body 10B of the comparative example includes all four packaging bodies 10B (first packaging section 110) with the corners of the body 130 to be wrapped from the inside during transportation. ), Pinholes, etc. were damaged or scratched. Further, in three of the four packaging bodies 10B of the comparative example, outside air enters into the packaging body 10B from the damaged portion, the light guide plate 131 absorbs moisture, and as shown in FIG. As a whole, deformation occurred. And in the package 10B of the three comparative examples, the light guide plate 131 located on the uppermost side was greatly deformed such as warpage as shown in FIG. 8B.
Further, in all of the four packaging bodies 10B of the comparative examples, the sliding material layer 116 is formed on the side surface 130a (end surface of the light guide plate 131) of the packaged body 130 as shown in FIG. A powdery sliding material was attached.
As described above, in the packaging body 10B of the comparative example, the light guide plate 131 that is the package body 130 is deformed due to moisture absorption and its quality is degraded, and the quality is also degraded due to the adhesion of the sliding material. It was happening.

On the other hand, as shown in Table 1 and FIG. 7 (a), the four packaging bodies 10A of the examples had a contact mark of the package body 130 in the first packaging section 110, No damage such as pinholes occurred. In addition, the packaged light guide plate 131 was not deformed such as warpage or deflection, and no foreign matter such as a sliding material was attached to the end surface as shown in FIG. 7C.
From the above, according to the present embodiment, deformation of the light guide plate 131 that is the package 130 can be greatly suppressed from deformation such as warping and bending due to moisture absorption, and adhesion of foreign matters can be suppressed, thereby improving the quality of the light guide plate 131. A package 10 and a packaging method that can be maintained at a high level can be provided.

(Second Embodiment)
FIG. 9 is a diagram illustrating the package 20 according to the second embodiment. 9A is a plan view of the package 20, and FIG. 9B is along the arrow B <b> 1-B <b> 2 shown in FIG. 9A in a state in which the package 20 packages the package 130. FIG. 3 is a cross-sectional view corresponding to the cross section of the package 10 of the first embodiment shown in FIG.
The package 20 of the second embodiment is substantially the same as the package 20 of the first embodiment described above, except that the second package 220 is integrally laminated with the first package 110. Therefore, in the second embodiment, parts that perform the same functions as those in the first embodiment described above are denoted by the same reference numerals or the same reference numerals at the end, and repeated descriptions are omitted as appropriate.

The packaging body 20 of the second embodiment includes a first packaging unit 110 and a second packaging unit 220 that is located inside the first packaging unit 110 and protects the first packaging unit 110.
The 2nd packaging part 220 of 2nd Embodiment is a resin-made sheet-like member, and may be formed with the material similar to the 2nd packaging part 120 of the above-mentioned 1st Embodiment, or is made from different resin. It is good.
For example, as shown in FIG. 9B, the second packaging portion 220 of the second embodiment is in the form of two sheets, and inside the resin layer 115 of the first packaging portion 110 (on the packaged body side). Thus, they are integrally laminated and joined to a region on the inner side of the four-side heat-sealed region. The second packaging part 220 may be joined to the first packaging part 110 by a joining layer (not shown) formed of the same adhesive as the joining layer 114 described above, or joined by heat or the like. Also good. Further, the second packaging part 220 may be integrally joined to the first packaging part 110 as a whole, or is laminated integrally to the first packaging part 110, but only a part is joined. It is good.

The package 20 is formed by, for example, laminating and joining a rectangular sheet-like second packaging part 220 at a predetermined position of a sheet-like member 110A forming the first packaging part 110, and the two members are joined. The sheet-like member thus formed can be formed by stacking two sheets with the second packaging portion 220 side as the inside, and sealing three sides (10a, 10c) other than the side 10d by heat sealing or the like. At this time, the corresponding three sides of the second packaging part 220 are also sealed, and the second packaging part 220 may be formed in a bag shape. Further, as long as the inner surface of the first packaging part 110 is not exposed to the packaged body 130 side, the second packaging part 220 may not be in the shape of a bag.
In addition, after the second packaging part 220 is formed in a bag shape in advance, the second packaging part 220 is inserted into the inside from the opening of the side 10d of the first packaging part 110 formed in the bag shape, and is laminated inside the first packaging part 110. And may be formed by bonding.

A packaging method using the package 20 of the second embodiment will be described.
First, a predetermined number of light guide plates 131 cut to a predetermined size are stacked in the thickness direction to form a cube-shaped package 130.
Next, the package body 130 is inserted from the side 10d of the package body 20 (first packaging part 110) (insertion step). Then, the side 10d is sealed by heat sealing or the like. As described above, the package 130 is packaged and sealed by the package 20. The opening method is the same as the opening method of the package 10 of the first embodiment described above. In addition, you may deaerate the inside of the package body 10 before sealing the opening part of the edge | side 10d.

According to the second embodiment, similarly to the first embodiment described above, the effect of preventing deformation of the package body 130 due to moisture absorption and the prevention of adhesion of foreign matters such as a sliding material can be obtained.
Moreover, according to 2nd Embodiment, since the 1st packaging part 110 and the 2nd packaging part 220 are laminated | stacked integrally, the packaging operation | work and opening operation | work of the to-be-packaged body 130 by the packaging body 20 can be performed easily.
Moreover, according to 2nd Embodiment, since the 1st packaging part 110 and the 2nd packaging part 220 are laminated | stacked integrally, the intensity | strength as the whole packaging body 20 can be improved, and the packaging body 20 is damaged. The effect which prevents etc. can be heightened more.
In addition, according to the second embodiment, since the second packaging part 220 is integrally laminated inside the first packaging part 110, the sliding material layer 116 is temporarily laminated on the resin layer 115 as well. 2 Since it is covered with the packaging part 220, the adhesion preventing effect of the sliding material can be further enhanced.

(Deformation)
Without being limited to the embodiments described above, various modifications and changes are possible, and these are also within the scope of the present invention.
(1) The 1st packaging part 110 is good also as a form which does not have the chuck | zipper 10b, if it is not necessary to seal again after opening.

(2) The 2nd packaging parts 120 and 220 are good also as a multilayered structure formed by laminating | stacking several layers integrally. At this time, the 2nd packaging parts 120 and 220 are not restricted to the layer formed with resin, You may have metal layers, such as aluminum with low moisture permeability. By setting it as such a form, the moisture absorption of the to-be-packaged body 130 can further be suppressed.
Further, for example, the second packaging parts 120 and 220 may be formed of a sheet-like foam or a sheet-like bubble cushioning material in order to enhance the effect of protecting the first packaging part 110 and the package body 130. Good.

(3) The package 130 is not limited to the light guide plate 131, and may be a stack of a plurality of other optical members such as lens sheets. The number of optical members such as the light guide plate 131 and other lens sheets stacked as the package 130 is not particularly limited, and may be one.

(4) The light guide plate 131 may be formed by arranging a plurality of unit optical shapes on both sides thereof, or may not have the unit optical shape and may have dots formed by printing on one side. Further, a form having a fine uneven shape (mat shape) may be used.
Further, the protective sheet for protecting the front and back surfaces of the light guide plate 131 may be separate from the light guide plate, and the protective sheet may not be used unless it is particularly necessary to protect the front and back surfaces.

  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 by the embodiments described above.

DESCRIPTION OF SYMBOLS 10,20 Package 10b Chuck 10d Opening part 110 1st packaging part 120,220 2nd packaging part 130 Package body 131 Light guide plate

Claims (8)

A packaging body for packaging an optical member made of resin as a packaged body,
A bag-shaped first packaging part provided with at least a base material layer and a metal layer laminated on one surface side of the base material layer;
A second packaging part that is positioned closer to the package body than the first packaging part and protects the first packaging part;
Providing
A package characterized by. The package according to claim 1,
The metal layer includes aluminum;
A package characterized by. In the package according to claim 1 or 2,
The second packaging part is made of resin and contains at least one of polyethylene, polypropylene, polyester, nylon, polyvinyl chloride,
A package characterized by. In the package according to any one of claims 1 to 3,
The first packaging part and the second packaging part are laminated, and at least a part thereof is joined;
A package characterized by. In the package according to any one of claims 1 to 4,
The packaged body is a light guide plate in which a plurality of sheets are laminated;
A package characterized by. A packaging method for packaging a resin optical member as a packaged body,
A bag-shaped first packaging part comprising at least a base material layer and a metal layer laminated on one surface side of the base material layer;
A sheet-like second packaging part that is positioned closer to the packaged body than the first packaging part, wraps the packaged object, and protects the first packaging part;
Using a package comprising
A second packaging unit packaging step of packaging the packaged body in the second packaging unit;
After the second packaging portion packaging step, an insertion step of inserting the packaged body packaged by the second packaging portion from the opening of the first packaging portion;
A sealing step for sealing the opening after the insertion step;
Providing
Packaging method characterized by. A packaging method for packaging a resin optical member as a packaged body,
A bag-shaped first packaging part comprising at least a base material layer and a metal layer laminated on one surface side of the base material layer;
A second packaging part that is integrally laminated on the packaged body side of the first packaging part and protects the first packaging part;
Using a package comprising
An insertion step of inserting the package body from the opening of the first packaging portion;
A sealing step for sealing the opening after the insertion step;
Providing
Packaging method characterized by. The packaging method according to claim 6 or 7,
Having a degassing step of degassing the inside of the package after the inserting step;
Packaging method characterized by.