Package and packing box for containing phosphor

Abstract

The package (100) comprises a powdered phosphor (10), a bottle (20) containing the phosphor (10), and a bag (30) made of aluminum laminate film containing the bottle (20), with the inside of the bottle (20) and the inside of the bag (30) being maintained in an inert gas atmosphere.

Description

[Technical Field]

[0001] The present invention relates to a package and a packaging box for accommodating a phosphor. [Background technology]

[0002] Various methods for storing phosphors have been developed to date. One such technique is known from Patent Document 1. Patent Document 1 describes a method of storing manufactured phosphors in a desiccator or in an aluminum laminate pack with high moisture barrier properties (paragraph 0011 of Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-314626 Summary of the Invention [Problem to be solved by the invention]

[0004] However, as a result of investigations by the present inventors, it has been found that the method for storing a phosphor described in Patent Document 1 leaves room for improvement in terms of the storage stability of the phosphor. [Means for solving the problem]

[0005] After further investigation, the inventors discovered that the shelf life of the phosphor can be improved not only by replacing the atmosphere in the bottle that comes into contact with the powdered phosphor with an inert gas, but also by maintaining the space between the bottle and the aluminum pouch (a bag made of aluminum laminate film) that does not come into contact with the phosphor in an inert gas atmosphere, thereby completing the present invention.

[0006] According to the present invention, A powdered phosphor; a bottle containing the phosphor; a bag made of aluminum laminate film for containing the bottle; A package comprising: A package is provided in which the interior of the bottle and the interior of the bag are maintained in an inert gas atmosphere.

[0007] Further, according to the present invention, The plurality of packages; a cushioning material provided around the package; A packaging box containing the above will be provided. [Effects of the Invention]

[0008] According to the present invention, a package with excellent preservation properties for a phosphor and a packaging box for enclosing the same are provided. [Brief explanation of the drawings]

[0009] The above-mentioned objects, as well as other objects, features and advantages, will become more apparent from the preferred embodiments described below and the accompanying drawings.

[0010] [Figure 1] FIG. 2 is a schematic diagram illustrating an example of a package configuration according to the present embodiment. [Figure 2] FIG. 2 is a schematic diagram showing an example of the configuration of a bag according to the present embodiment. [Figure 3] FIG. 1 is a schematic diagram showing an example of the configuration of a bottle according to an embodiment of the present invention. [Figure 4] FIG. 2 is a schematic diagram illustrating an example of the configuration of a packaging box according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all drawings, similar components are designated by similar reference numerals, and descriptions thereof will be omitted where appropriate. Furthermore, the drawings are schematic diagrams and do not correspond to actual dimensional proportions. In this embodiment, the front, back, left, right, top and bottom directions are defined as shown in the drawings. However, these are defined for the sake of convenience in order to easily explain the relative relationships between components. Therefore, they do not limit the directions when manufacturing or using a product embodying the present invention.

[0012] An outline of the package of this embodiment will be described. The package of this embodiment includes a powdered phosphor, a bottle containing the phosphor, and a bag made of aluminum laminate film that contains the bottle. The inside of the bottle and the inside of the aluminum laminate film bag (hereinafter sometimes referred to as an "aluminum pouch") in the package are maintained in an inert gas atmosphere.

[0013] In the technical field of phosphors, powdered phosphors have been directly enclosed in aluminum laminate packs after production, as shown in the above-mentioned Patent Document 1. That is, up until now, attention has been paid to the atmosphere inside the pack that is in contact with the powdered phosphor, but no attention has been paid to the atmosphere outside the pack that is not in direct contact with the phosphor.

[0014] However, in recent years, the requirements for phosphor properties have become more stringent, and powdered phosphors are required to have high shelf life. For example, even slight exposure of powdered phosphors to oxygen can cause variations in the luminescence characteristics between batches. Furthermore, if the pack is damaged during transportation, the inside of the pack may be unintentionally exposed to the external environment.

[0015] In response to this, the inventors conducted research and found that by not only replacing the atmosphere in the bottle that comes into contact with the powdered phosphor with an inert gas, but also maintaining an inert gas atmosphere in the space between the bottle and the aluminum pouch (a bag made of aluminum laminate film) that does not come into contact with the phosphor, the shelf life of the phosphor can be improved compared to the aluminum laminate pack method, in which only the atmosphere that comes into contact with the phosphor is replaced with an inert gas.

[0016] Furthermore, even if the aluminum pouch (exterior packaging) is damaged, the phosphor is contained within the bottle (interior packaging) and is not exposed to the external environment, improving the storage stability of the package during transportation.

[0017] After the aluminum pouch is opened, the phosphor can be stored inside the bottle, and therefore the package of this embodiment has a structure that is excellent in terms of ease of storage of the phosphor after opening.

[0018] The detailed configuration of the package of this embodiment will be described below with reference to FIGS.

[0019] Fig. 1 is a schematic diagram showing an example of the configuration of a package 100. Fig. 2 is a schematic diagram showing an example of the configuration of a bag 30 that constitutes the package 100 of Fig. 1, and Fig. 3 is a schematic diagram showing an example of the configuration of a bottle 20 that is accommodated in the bag 30 of Fig. 1.

[0020] The package 100 in FIG. 1 includes an aluminum pouch (bag 30) and a bottle 20 containing phosphor 10. In the package 100, the space between the outside of the bottle 20 and the inside of the bag 30, and the space inside the bottle 20 are each maintained in an inert gas atmosphere. The inert gas atmosphere has a lower limit of the inert gas content, calculated as volumetrically based on the total gas contained in the space, of 90% or more, preferably 95% or more, and more preferably 98% or more. On the other hand, the upper limit of the inert gas content is not particularly limited, but may be 100% or less, calculated as volumetrically based on the total gas contained in the space.

[0021] The inert gas is not particularly limited as long as it does not react with the phosphor, and examples thereof include nitrogen gas, argon gas, etc. These may be used alone or in combination of two or more.

[0022] The bag 30 in Fig. 2 is made of an aluminum laminate film. The aluminum laminate film may be a laminate film in which an aluminum layer and a resin layer are laminated. Note that the bag 30 may contain other materials in addition to aluminum and resin in order to improve gas barrier properties and reduce water vapor permeability. The bag 30 may be made of an aluminum laminate film.

[0023] The aluminum layer of the aluminum laminate film may be, for example, an aluminum foil or an aluminum vapor deposition layer. As the aluminum material, in addition to pure aluminum, Al-Mn, Al-Mg, or Al-Fe aluminum alloys may be used.

[0024] Examples of resin layers for aluminum laminate films include resin films such as nylon (NY), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), and chlorinated polyethylene resin (SPE). This can improve the gas barrier properties of bag 30. These may be used alone or in combination of two or more. It is preferable that the innermost layer of bag 30 be provided with a resin layer with excellent heat melting properties as a heat seal layer.

[0025] The bag 30 may be formed by laminating multiple aluminum layers and resin layers. The bag 30 may be configured such that one or more resin layers are laminated on both sides of the aluminum layer. The number of layers in the bag 30 may be, for example, 3 to 10.

[0026] The aluminum layer and the resin layer can be bonded to each other by a known method, for example, by thermocompression bonding or by using an adhesive, such as a heat-curable adhesive or an ultraviolet-curable adhesive.

[0027] The thickness of bag 30 is not particularly limited, but is 50 μm or more and 300 μm or less, more preferably 80 μm or more and 250 μm or less, and even more preferably 100 μm or more and 200 μm or less. By making the thickness equal to or greater than the lower limit, the mechanical strength and gas barrier properties of bag 30 can be improved. By making the thickness equal to or less than the upper limit, the handleability of bag 30 can be improved, for example, by making it easier to fold the upper end side of bag 30 during packaging.

[0028] The water vapor permeability of the bag 30 measured in accordance with JIS Z0222:1959 (temperature 40°C, relative humidity 90%) is, for example, 0.01 g / m 2 ·day or more 1.0g / m 2 ·day or less, preferably 0.05g / m 2 ·day or more 0.5g / m 2 ·day or less, more preferably 0.08 g / m 2 ·day or more 0.3g / m 2 By keeping the value within this range, the storage stability of phosphor 10 can be improved.

[0029] The oxygen permeability of the bag 30 measured in accordance with JIS K7126-1:2006 (temperature 23°C, relative humidity 0%) is, for example, 0.1 cm 3 / (m 2 ·24h·atm) or more 10.0cm 3 / (m 2 24h atm or less, preferably 0.3cm 3 / (m 2 ·24h·atm) or more 5.0cm 3 / (m 2 ·24h·atm or less, preferably 0.8cm 3 / (m 2 ·24h·atm) or more 3.0cm 3 / (m 2 By keeping the temperature within such a range, the storage stability of the phosphor 10 can be improved.

[0030] The bag 30 may be in the form of, for example, a standing pouch, two-sided seal, three-sided seal, four-sided seal, etc. Among these, a standing pouch is used from the viewpoint of the capacity to accommodate the bottle 20 and storage ease.

[0031] The bag 30 in FIG. 2 is an example of a stand-up pouch with a zipper 32. The bag 30 is made by overlapping a front surface material and a back surface material made of aluminum laminate film. Both side edges of the front surface material and the back surface material are side heat sealed, and a bottom heat seal is applied between the front surface material and the back surface material to form a boat-shaped bottom 36 in the bottom gusset. The shape of this bottom 36 is not particularly limited as long as the bag 30 can stand on its own.

[0032] At least a portion of the bag 30 may be sealed by heat sealing. For example, the upper portion (mouth portion) between the front and back surfaces may be opened before the bottle 20 is accommodated, and then sealed by heat sealing after the bottle 20 is accommodated inside the bag 30. This improves the bottle accommodation capacity and sealing performance of the bag 30.

[0033] 2 has a zipper 32 on the innermost layer of the opening that allows the bag 30 to be resealed. After the bag 30 is opened, the opening of the bag 30 can be freely opened with the zipper 32. This makes it easy to store and remove the bottle 20 in the bag 30 after opening.

[0034] The bag 30 may be provided with a notch at the side edge between the upper end 34 and the zipper 32 for cutting off the upper end 34 . A tear line for cutting off a portion of the bag 30 may also be provided on the surface of the bag 30. This tear line is provided between the upper end 34 and the zipper 32, and can be pulled to physically remove the portion from the bag 30. This allows the bottle 20 to be removed from the hole in the bag 30 formed by removing the portion, while the upper end 34 remains heat-sealed.

[0035] The size of the bag 30 can be appropriately selected depending on the size of the bottle 20 to be stored. For example, the length below the zipper can be adjusted depending on the bottle height. Also, the bag width and the bottom width can be adjusted depending on the bottle width.

[0036] A label displaying various types of information may be attached to the surface of the bag 30. The label may be printed directly on the surface of the bag 30, or may be adhered as a printed matter.

[0037] 3 is made of plastic and includes a main body 22 that contains phosphor 10, an inner lid 26 that can be attached to a mouth 24 of the main body 22, and a lid portion 28 that can be attached to the mouth 24 with the inner lid 26 attached to the mouth 24. The inner lid 26 can prevent phosphor 10 from coming into contact with and adhering to the lid portion 28. This can reduce the risk of phosphor 10 scattering when the lid portion 28 is opened or closed.

[0038] The body 22 of the bottle 20 may have various shapes as long as it can be placed on the floor. The bottom of the body 22 of the bottle 20 sealed in the package 100 is held by the bottom 36 of the bag 30. When the package 100 is placed in a packaging box with the bag 30 standing upright, the bottle 20 can also maintain its upright position.

[0039] An inert gas atmosphere is maintained between the outer surface of the bottle 20 sealed in the package 100 and the innermost surface of the bag 30. Furthermore, inside the body 22 of the bottle 20, the portion not filled with the phosphor 10 is maintained in an inert gas atmosphere.

[0040] The phosphor 10 is not particularly limited as long as it is in a solid state, but a powdered phosphor can be used. The powdered phosphor 10 is not dispersed in a solvent or resin.

[0041] The average particle diameter (d50) of the powdered phosphor 10 is not particularly limited, but may be, for example, 1 μm or more and 100 μm or less, or 3 μm or more and 50 μm or less. The average particle size refers to the particle size D50 at which 50% of the particles pass through (cumulative passing fraction) from the small particle size side in the volume-based particle size distribution obtained by measurement using a laser diffraction scattering particle size distribution measurement method.

[0042] The phosphor 10 is not particularly limited, and various phosphors such as a phosphor that emits green light, a phosphor that emits blue light, a phosphor that emits yellow light, a phosphor that emits red light, etc. Specific examples include known phosphors such as inorganic phosphors, organic phosphors, fluorescent pigments, and fluorescent dyes.

[0043] More specifically, the phosphor 10 is an oxide phosphor (including garnet-based phosphors such as YAG phosphors and silicate phosphors), an oxynitride phosphor (including sialon phosphors such as α-type sialon phosphors and β-type sialon phosphors), a nitride phosphor (CASN phosphors, SCASN phosphors, La3Si6N 11 The phosphor may include one or more inorganic phosphors selected from the group consisting of: Sr:Ce phosphor, SrLiAl3N4:Eu phosphor, etc.), sulfide phosphor, fluoride phosphor (including KSF phosphor, etc.), chloride phosphor, halide phosphor (including halophosphate chloride phosphor, etc.), and aluminate phosphor.

[0044] Among these, it is preferable that phosphor 10 contains one or more selected from the group consisting of α-type sialon phosphor, β-type sialon phosphor, SCASN phosphor and KSF phosphor in order to obtain the effect of phosphor stability.

[0045] A method for manufacturing the package 100 of this embodiment will now be described. The following method for manufacturing the package 100 is an example, and various other processes may be used.

[0046] A bottle 20 for accommodating the weighed phosphor 10 and an aluminum pouch (bag 30) that fits the bottle 20 are prepared. The bottle 20 and the bag 30 are placed in the side box with their mouths open. The atmosphere in the side box is replaced with an inert gas. In this side box, the inner lid 26 and the lid portion 28 are attached to the main body 22, and the phosphor 10 is sealed inside the bottle 20. This bottle 20 is placed inside the bag 30. The air inside the bag 30 is removed, and the zipper 32 is closed. The bag 30 is removed from the side box and its top end 34 is heat sealed. As a result of the above, the package 100 shown in FIG. 1 is obtained.

[0047] The packaging box 200 of this embodiment will be described below with reference to FIG. FIG. 4 is a schematic diagram showing an example of the configuration of the packaging box 200. As shown in FIG.

[0048] The packaging box 200 in FIG. 4 is made up of a box 210 such as a cardboard box or a plastic case. This packaging box 200 contains, within a box 210, a plurality of packages 100 and cushioning material 220 provided around at least a portion of the periphery of the packages 100. The packages 100 can be stored in a self-standing state within the packaging box 200. The cushioning material 220 may be disposed between the bottom of the package 100 and the inner bottom surface of the box 210, or may be disposed between the packages 100. A known cushioning material may be used as the cushioning material 220. By transporting the packaging box 200 containing a plurality of packages 100, the efficiency of transporting the packages 100 can be improved.

[0049] The packaging box 200 may be provided with partitions that divide the storage space. The packages 100 can be placed in each of the separate storage spaces. This makes it possible to prevent damage caused by the packages 100 coming into contact with each other.

[0050] The package 100 can be housed in the packaging box 200 with the upper end 34 of the bag 30 folded back, thereby preventing the opening of the bag 30 from being damaged.

[0051] Although the embodiments of the present invention have been described above, these are merely examples of the present invention, and various other configurations can also be adopted.

[0052] As long as the effects of the present invention are not impaired, the package 100 may include one or more components other than the bottle 20 and bag 30. Examples of other components include a desiccant.

[0053] Below, examples of reference forms are added. 1. A powdered phosphor; a bottle containing the phosphor; a bag made of aluminum laminate film for containing the bottle; A package comprising: The package, wherein the inside of the bottle and the inside of the bag are maintained in an inert gas atmosphere. 2. The package according to claim 1, The water vapor permeability of the bag measured in accordance with JIS Z0222:1959 (temperature 40°C, relative humidity 90%) is 0.01 g / m 2 ·day or more 1.0g / m 2 · The following day, package. 3. The package according to 1. or 2., The oxygen permeability of the bag measured in accordance with JIS K7126-1:2006 (temperature 23°C, relative humidity 0%) is 0.1 cm 3 / (m 2 ·24h·atm) or more 10.0cm 3 / (m 2 ·24h·ATM or less, package. 4. A package according to any one of 1. to 3., The package wherein the opening of the bag is heat sealed. 5. A package according to any one of 1. to 4., The package, wherein the phosphor comprises one or more inorganic phosphors selected from the group consisting of oxide phosphors, oxynitride phosphors, nitride phosphors, sulfide phosphors, fluoride phosphors, chloride phosphors, halide phosphors, and aluminate phosphors. 6. The package according to 5., The package, wherein the phosphor comprises one or more selected from the group consisting of an α-type sialon phosphor, a β-type sialon phosphor, a SCASN phosphor, and a KSF phosphor. 7. A package according to any one of 1. to 6., The package has a tear line on the surface of the bag. 8. A package according to any one of 1. to 7., The package comprises a zipper on the innermost layer of the opening of the bag, which zipper enables the bag to be resealed. 9. A package according to any one of 1. to 8., The bottle is It is made of plastic, a main body that accommodates the phosphor; an inner lid that can be attached to the opening of the main body; a lid portion that can be attached to the mouth portion with the inner lid attached to the mouth portion; Equipped with package. 10. A package according to any one of 1. to 9., The package wherein the bag has a self-supporting base. 11. A plurality of the packages according to any one of 1. to 10.; a cushioning material provided around the package; Packing box containing the above. 12. The packaging box according to 11., A packaging box equipped with partitions that divide the storage space. 13. A packaging box as described in 11. or 12., The package is housed in a packaging box with the top end of the bag folded back.

[0054] This application claims priority based on Japanese Patent Application No. 2018-212469, filed November 12, 2018, the disclosure of which is incorporated herein by reference in its entirety.

Claims

1. A powdered phosphor; a bottle containing the phosphor; a bag made of aluminum laminate film for containing the bottle; A package comprising: The package, wherein the inside of the bottle and the inside of the bag are maintained in an inert gas atmosphere.

2. 10. The package of claim 1, The water vapor permeability of the bag measured in accordance with JIS Z0222:1959 (temperature 40°C, relative humidity 90%) is 0.01 g / m ２ ・1.0g / m for more than 1 day ２ - A package that is less than day.

3. 3. The package of claim 1 or 2, The oxygen permeability of the bag measured in accordance with JIS K7126-1:2006 (temperature 23°C, relative humidity 0%) is 0.1 cm ３ / (m ２ ・24h・ATM) or more 10.0cm ３ / (m ２ - 24h-atm) or less, package.

4. The package according to any one of claims 1 to 3, The package, wherein the inert gas includes at least one of nitrogen gas and argon gas.

5. The package according to any one of claims 1 to 4, The package, wherein the thickness of the bag is 50 μm or more and 300 μm or less.

6. The package according to any one of claims 1 to 5, The package, wherein at least a portion of the bag is heat sealed.

7. The package according to any one of claims 1 to 6, The package, wherein the phosphor comprises one or more inorganic phosphors selected from the group consisting of oxide phosphors, oxynitride phosphors, nitride phosphors, sulfide phosphors, fluoride phosphors, chloride phosphors, halide phosphors, and aluminate phosphors.

8. The package according to any one of claims 1 to 6, The package, wherein the phosphor comprises one or more selected from the group consisting of an α-sialon phosphor, a β-sialon phosphor, a SCASN phosphor, and a KSF phosphor.

9. A package according to any one of claims 1 to 8, The package has a tear line on the surface of the bag.

10. A package according to any one of claims 1 to 9, The package comprises a zipper on the innermost layer of the opening of the bag, which zipper enables the bag to be resealed.

11. A package according to any one of claims 1 to 10, The bottle is It is made of plastic, a main body that accommodates the phosphor; an inner lid that can be attached to the opening of the main body; a lid portion that can be attached to the mouth portion with the inner lid attached to the mouth portion; Equipped with package.

12. A package according to any one of claims 1 to 11, The package wherein the bag has a self-supporting base.

13. A plurality of the packages according to any one of claims 1 to 12; a cushioning material provided around the package; Packing box containing the above.

14. The packaging box according to claim 13, A packaging box equipped with partitions that divide the storage space.

15. The packaging box according to claim 13 or 14, The package is housed in a packaging box with the top end of the bag folded back.

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