Packaging material and battery package

Abstract

To provide a packaging material in which a plurality of batteries are packaged, and when a part of the batteries is taken out, the other remaining batteries are hardly detached from the package.SOLUTION: The packaging material 3 includes a side surface covering portion 31 that extends parallel to the arrangement direction of the plurality of batteries and covers the side surfaces of the plurality of batteries, and a repeelable adhesive is applied to at least a part of a surface of the side surface covering portion 31 that is in contact with the side surface.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] FIELD OF THE INVENTION The present invention relates to packaging materials and battery packages. [Background technology]

[0002] Cylindrical batteries with terminals formed on one end and the other end are sometimes distributed on the market in the form of battery packages in which multiple batteries are packed together in packaging material. For example, Patent Document 1 discloses a battery package in which multiple batteries arranged with their sides facing each other are packed in packaging material made of heat-shrinkable film. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-037917 Summary of the Invention [Problem to be solved by the invention]

[0004] Packaging materials made of heat-shrinkable film can tear when some batteries are removed, reducing their ability to hold the other batteries in place. When the packaging material loses its ability to hold the other batteries in place, the other batteries can come loose from the packaging, making it impossible to store multiple batteries wrapped in the packaging material.

[0005] The disclosed technology aims to provide a packaging material that can package a plurality of batteries and that makes it difficult for the remaining batteries to come off the packaging when some of the batteries are removed. [Means for solving the problem]

[0006] A packaging material according to one aspect of the present disclosure is a packaging material that packages a plurality of cylindrical batteries, each having a cylindrical shape and terminals formed on one end surface and the other end surface, arranged with their sides facing each other, and is provided with a side covering portion that extends parallel to the arrangement direction of the plurality of batteries and covers the side surfaces of the plurality of batteries, and at least a portion of the surface of the side covering portion that comes into contact with the side surface is coated with a removable adhesive. [Effects of the Invention]

[0007] According to one aspect of the packaging material disclosed in the present application, it is possible to provide a packaging material that can package a plurality of batteries and that makes it difficult for the remaining batteries to come off the packaging when some of the batteries are removed. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a battery package according to a first embodiment. [Figure 2] FIG. 2 is a front view of the battery package of the first embodiment. [Figure 3] FIG. 3 is a right side view of the battery package of the first embodiment. [Figure 4] FIG. 4 is a left side view of the battery package of the first embodiment. [Figure 5] FIG. 5 is a rear view of the battery package of the first embodiment. [Figure 6] FIG. 6 is a top view of the battery package of the first embodiment. [Figure 7] FIG. 7 is a bottom view of the battery package of the first embodiment. [Figure 8] FIG. 8 is a side view of the battery. [Figure 9] FIG. 9 is a development view of the packaging material of the first embodiment. [Figure 10] FIG. 10 is a developed view of a packaging material for explaining a first modified example of the region where the removable adhesive is applied. [Figure 11] FIG. 11 is a developed view of the packaging material, illustrating a second modified example of the region where the removable adhesive is applied. [Figure 12]FIG. 12 is a perspective view of a battery package, illustrating a first modified example of perforations. [Figure 13] FIG. 13 is a perspective view of a battery package, illustrating a second modified example of perforations. [Figure 14] FIG. 14 is a perspective view of a battery package, illustrating a third modified example of perforations. [Figure 15] FIG. 15 is a perspective view of a battery package, illustrating a fourth modified example of perforations. [Figure 16] FIG. 16 is a development view of the packaging material shown in FIG. [Figure 17] FIG. 17 is a perspective view of a battery package, illustrating a fifth modified example of perforations. [Figure 18] FIG. 18 is a development view of the packaging material shown in FIG. [Figure 19] FIG. 19 is a diagram showing another example of a battery package. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the packaging material and battery package disclosed in the present application will be described in detail with reference to the drawings. Note that the packaging material and battery package disclosed in the present application are not limited to the following embodiments.

[0010] First Embodiment FIG. 1 is a perspective view of a battery package according to a first embodiment. FIG. 2 is a front view of the battery package according to the first embodiment. FIG. 3 is a right side view of the battery package according to the first embodiment. FIG. 4 is a left side view of the battery package according to the first embodiment. FIG. 5 is a rear view of the battery package according to the first embodiment. FIG. 6 is a top view of the battery package according to the first embodiment. FIG. 7 is a bottom view of the battery package according to the first embodiment. The battery package 1 is formed by packaging a plurality of batteries 2 together in a packaging material 3.

[0011] FIG. 8 is a side view of a battery. The battery 2 has a cylindrical tube portion 21. Both ends of the tube portion 21 are closed end faces, and terminals are formed on both end faces. For example, the tube portion 21 is formed in a cylindrical shape. A positive terminal 22a is formed as a terminal on one end face 22 of the tube portion 21. A negative terminal 23a is formed as a terminal on the other end face 23 of the tube portion 21. In the battery package 1, multiple batteries 2 are packaged side by side with their sides facing each other. In the battery package 1 shown in FIGS. 1 to 7, the multiple batteries 2 are packaged with the one end face 22 on which the positive terminal 22a is formed facing the top. In the following description, the direction in which the multiple batteries 2 are arranged is simply referred to as the arrangement direction. The direction along the central axis of the tube portion 21 of the battery 2 (the direction from the positive terminal 22a toward the negative terminal 23a) is simply referred to as the axial direction.

[0012] 9 is a developed view of the packaging material of the first embodiment. The packaging material 3 is a sheet-like member. Examples of materials for the packaging material 3 include a resin film and paper. The packaging material 3 includes a side covering portion 31, a one end covering portion 32, an other end covering portion 33, and an extension portion 34.

[0013] 1 to 7, when the side covering portion 31 covers the plurality of batteries 2, it extends parallel to the arrangement direction of the plurality of batteries 2 and covers the side surfaces of the plurality of batteries 2. The side covering portion 31 has a first side covering portion 31a and a second side covering portion 31b that is provided on the opposite side of the first side covering portion 31a with the plurality of batteries 2 in between.

[0014] The one end surface covering portion 32 covers one end surface 22 of the plurality of batteries 2. The one end surface covering portion 32 covers the positive electrode terminal 22a (see also FIG. 8) formed on one end surface 22. The other end surface covering portion 33 covers the other end surface 23. The other end surface covering portion 33 covers the negative electrode terminal 23a (see also FIG. 8) formed on the other end surface 23.

[0015] The side surface covering portion 31, one end surface covering portion 32, and the other end surface covering portion 33 form a cylindrical packaging material 3 that houses multiple batteries 2 inside. In order to form the cylindrical packaging material 3 with the side surface covering portion 31, one end surface covering portion 32, and the other end surface covering portion 33, the second side surface covering portion 31b is provided with an overlapping margin 39 for overlapping and joining with the other end surface covering portion 33.

[0016] The extension portion 34 is formed to extend in the arrangement direction from an end portion of the first side surface covering portion 31a that is in the arrangement direction. The extension portion 34 is a side surface of a battery 2 provided at an end of the plurality of batteries 2, and covers part of the area exposed from the side surface covering portion 31. The extension portion 34 is formed to be shorter in the axial direction than the length of the tubular portion 21 of the battery 2.

[0017] As shown in Figure 2 etc., an example is shown in which extension portions 34 are formed on both sides of the first side cover portion 31a, but one of the extension portions 34 may be formed on the second side cover portion 31b.

[0018] Two perforations 35 extending along the arrangement direction are formed in the first side cover portion 31a. Each of the two perforations 35 extends to an end of the first side cover portion 31a. By pulling the area between the two perforations 35, the first side cover portion 31ab is cut along the perforations 35. The two perforations 35 are formed at positions that will be cut when the extension portion 34 is pulled. For example, in the example shown in FIG. 2, the perforations 35 extend from a corner where the extension portion 34 and the first side cover portion 31a are connected. Note that if the perforations 35 are formed so as to extend from a portion where the extension portion 34 is not formed, the first side cover portion 31a can be cut along the perforations 35 by pulling the extension portion 34. In addition, when one of the extension portions 34 is formed on the second side surface covering portion 31b, two perforations 35 are also formed on the second side surface covering portion 31b, similar to the first side surface covering portion 31a.

[0019] A removable adhesive is applied to at least a portion of the surface of the packaging material 3 that faces the batteries 2 when the packaging material 3 packages the batteries 2. Specifically, the removable adhesive is applied to at least a portion of the surface of the first side surface covering portion 31a, the second side surface covering portion 31b, the one end surface covering portion 32, the other end surface covering portion 33, and the extension portion 34 that faces the batteries 2. This allows the packaging material 3 to be attached to the batteries 2. Furthermore, because the removable adhesive is applied, the packaging material 3 can be reattached to the batteries 2 after being peeled off from the batteries 2.

[0020] In addition, the area where the removable adhesive is applied is hatched in Fig. 9. In the example shown in Fig. 9, the removable adhesive is applied to the entire packaging material 3.

[0021] In a battery package 1 in which multiple batteries 2 are packaged in a packaging material 3, the packaging material 3 coated with a removable adhesive is attached to the batteries 2, thereby preventing the batteries 2 from falling out of the battery package 1.

[0022] Furthermore, the extensions 34 are attached to the side surfaces of the batteries 2 located at the ends of the multiple batteries 2, which more reliably prevents the batteries 2 from falling off from the ends. Note that, because areas other than the extensions 34 are also attached to the batteries 2 with a removable adhesive, the effect of preventing the batteries 2 from falling off from the battery package 1 can be obtained even if the extensions 34 are not provided.

[0023] When multiple batteries 2 are packaged in a resin film, the resin film may be heat-shrunk, so-called shrink packaging, to adhere the resin film to the multiple batteries 2 and prevent the batteries 2 from falling off. On the other hand, when the packaging material 3 is made of paper, the packaging material 3 cannot be heat-shrunk, but a removable adhesive is applied to the packaging material 3, which can be attached to the batteries 2 to prevent the batteries 2 from falling off.

[0024] In some cases, only some of the batteries 2 in a battery package 1 need to be removed and used. In this case, the extension 34 is pulled and peeled off the battery 2, and the first side cover 31a is cut until the battery 2 to be used is exposed, and the exposed battery 2 is then removed. Because the extension 34 is coated with a removable adhesive, it can be reattached to the side of the battery 2. Therefore, by attaching the extension 34 to the side of the battery 2 that will be newly installed at the edge of the multiple batteries 2 remaining in the battery package 1, it is possible to prevent the edge battery 2 from falling off while the battery package 1 is stored.

[0025] When multiple batteries 2 are packaged in a resin film, removing some of the batteries 2 can tear the film, reducing its ability to hold the remaining batteries 2 and causing the remaining batteries 2 to fall out. In contrast, in the battery package 1 using the packaging material 3 of embodiment 1, the attachment of the extension 34 makes it difficult for the remaining batteries 2 to fall out even if the film is torn.

[0026] Moreover, the positive electrode terminal 22a is prevented from rusting because it is covered by the one end surface cover portion 32. The negative electrode terminal 23a is prevented from rusting because it is covered by the other end surface cover portion 33.

[0027] Next, modified examples of the region to which the removable adhesive is applied will be described. Fig. 10 is a developed view of the packaging material, illustrating a first modified example of the region to which the removable adhesive is applied. As shown in Fig. 10, the removable adhesive may be applied to a region that avoids the one end surface covering portion 32. In this case, the one end surface covering portion 32 is not attached to the positive terminal 22a of the battery 2. Therefore, for example, if a perforation is formed along the boundary between the one end surface covering portion 32 and the side surface covering portion 31, it becomes easy to separate the one end surface covering portion 32 by cutting along the perforation.

[0028] FIG. 11 is a developed view of the packaging material to explain a second modification of the region to which the removable adhesive is applied. As shown in FIG. 11, the removable adhesive may be applied to the first side cover portion 31a, avoiding the region between the two perforations 35. In this case, the region between the two perforations 35 is not attached to the battery 2. Therefore, when the extension portion 34 is pulled to cut the first side cover portion 31a along the perforations 35, the region between the two perforations 35 can be easily separated from the battery 2. This reduces the force required to pull the extension portion 34 to separate the region between the two perforations 35 from the battery while cutting along the two perforations 35. This facilitates removal of the battery 2 from the battery package 1.

[0029] Next, modified examples of the perforations formed in the packaging material 3 will be described. Fig. 12 is a perspective view of a battery package for explaining a first modified example of the perforations. In the first modified example of the perforations, in addition to the perforations 35, multiple perforations 36 extending perpendicular to the arrangement direction are formed in the side cover portion 31, the one end surface cover portion 32, and the other end surface cover portion 33. The multiple perforations 36 extending perpendicular to the arrangement direction are formed, for example, at positions between adjacent batteries 2 when viewed from the front (as shown in Fig. 2). This makes it possible to easily cut off along the perforations 36 the portion of the packaging material 3 that is no longer attached to the battery 2 when the battery 2 is removed from the battery package 1.

[0030] FIG. 13 is a perspective view of a battery package illustrating a second variation of the perforations. In the second variation of the perforations, multiple perforations 36 are formed extending perpendicular to the arrangement direction, as in the first variation. In the second variation, the multiple perforations 36 extending perpendicular to the arrangement direction are formed while avoiding the area between two perforations 35 extending along the arrangement direction. If a perforation 36 were formed between the two perforations 35, the extension portion 34 would be cut at the perforation 36 when pulled, resulting in the extension portion 34 being separated. This could make it impossible to reattach the extension portion 34 to prevent the battery 2 from falling off. In the second variation, no perforation 36 is formed between the two perforations 35, preventing the extension portion 34 from being cut at the perforation 36 and being unintentionally separated.

[0031] FIG. 14 is a perspective view of a battery package illustrating a third variation of the perforations. In this third variation, perforations 35 are not formed along the arrangement direction, but perforations 36 are formed perpendicular to the arrangement direction. In this case, when the battery 2 is removed from the battery package 1, the portion of the packaging material 3 that is no longer attached to the battery 2 can be easily cut along the perforations 36. Note that when the packaging material is cut, the extension portion 34 is also cut off. However, vibrations and shocks that cause the battery 2 with the attached side cover portion 31 to fall off from the battery package 1 are often applied during the distribution process of the battery package 1. Therefore, when the battery package 1 is stored by the user, the battery 2 is less likely to fall off even if the extension portion 34 is not attached.

[0032] Fig. 15 is a perspective view of a battery package and is a diagram for explaining a fourth variation of the perforations. Fig. 16 is a development view of the packaging material shown in Fig. 15. In the fourth variation of the perforations, in addition to perforations 36, perforations 37 are formed that extend along the boundary between one end surface covering portion 32 and side surface covering portion 31. The formation of perforations 37 makes it easy to separate one end surface covering portion 32. Furthermore, the number of perforations increases the variety of separation procedures for packaging material 3 when removing some of the batteries 2 from battery package 1, allowing users to select the separation method that suits their preferences.

[0033] FIG. 17 is a perspective view of a battery package and is a diagram illustrating a fifth variation of the perforations. FIG. 18 is a development view of the packaging material shown in FIG. 17. In the fifth variation of the perforations, in addition to perforations 36, perforations 38 are formed along the boundary between the other end surface covering portion 33 and the side surface covering portion 31. The formation of perforations 38 makes it easier to separate the other end surface covering portion 33. Furthermore, the increased number of perforations increases the variety of separation procedures for the packaging material 3 when removing some of the batteries 2 from the battery package 1, allowing users to select the separation method that suits their preferences. Note that perforations 38 are also formed at the boundary between the overlap 39 and the second side surface covering portion 31b.

[0034] The combination of perforations 35, 36, 37, and 38 formed in packaging material 3 is not limited to the above example, and different combinations may be formed. For example, both perforations 37 and perforations 38 may be formed in packaging material 3.

[0035] Fig. 19 is a diagram showing another example of a battery package. As shown in Fig. 19, a packaging material 3 may be attached to a backing sheet 4 to form a battery package 1. The battery package 1 including the backing sheet 4 can be blister-packaged. [Explanation of symbols]

[0036] 1 battery package 2 batteries 21 Cylinder part 22 One end face 22a Positive terminal 23 Other end face 23a Negative terminal 3 Packaging materials 31 Side cover 31a first side cover part 31b second side cover part 32 One end face cover 33 Other end face cover 34 Extension 35, 36, 37, 38 perforations 39 Layer 4 Mount

Claims

1. A packaging material for packaging a plurality of cylindrical batteries each having a cylindrical shape and terminals formed on one end surface and the other end surface, arranged with their sides facing each other, a side cover portion extending parallel to the arrangement direction of the plurality of batteries and covering the side surfaces of the plurality of batteries; A packaging material in which a removable adhesive is applied to at least a portion of the surface of the side cover portion that contacts the side surface.

2. The packaging material according to claim 1 , further comprising an end surface covering portion formed integrally with the side surface covering portion and covering the one end surface of the plurality of batteries.

3. The packaging material according to claim 2 , further comprising an other end face covering portion formed integrally with the side face covering portion and covering the other end faces of the plurality of batteries.

4. The packaging material according to claim 3 , wherein the side covering portion comprises a first side covering portion and a second side covering portion provided on the opposite side of the first side covering portion with the plurality of batteries interposed therebetween.

5. The packaging material according to claim 4, wherein at least one of the one end surface covering portion and the other end surface covering portion is not coated with a removable adhesive.

6. The packaging material according to claim 4 , wherein the side surface covering portion, the one end surface covering portion, and the other end surface covering portion are formed with perforations extending in a direction perpendicular to the arrangement direction.

7. an extension portion extending from an end of the first side surface covering portion along the arrangement direction of the batteries and covering a part of the side surface of the batteries that is exposed from the side surface covering portion; The packaging material according to claim 4, wherein a removable adhesive is applied to at least a part of the surface of the extension that contacts the side surface.

8. The packaging material according to claim 6, wherein perforations are formed along the boundary between the side surface covering portion and the one end surface covering portion.

9. The packaging material according to claim 6, wherein a perforation is formed along a boundary between the side surface covering portion and the other end surface covering portion.

10. The packaging material according to claim 7 , wherein the first side cover portion has two perforations formed therein that extend along the arrangement direction.

11. The packaging material according to claim 10, wherein a removable adhesive is applied to the first side cover portion, avoiding an area between the two perforations.

12. The packaging material according to claim 10 , wherein the side surface covering portion, the one end surface covering portion, and the other end surface covering portion have perforations formed therein that extend in a direction perpendicular to the arrangement direction.

13. The packaging material according to claim 12, wherein the perforations extending in a direction perpendicular to the arrangement direction are formed so as to avoid an area between two perforations extending along the arrangement direction.

14. 14. The packaging material according to claim 1, wherein the packaging material is made of paper.

15. The packaging material according to claim 14; and a plurality of batteries packaged in the packaging material.

16. The battery package according to claim 15 , further comprising a backing sheet to which the packaging material is attached.

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