JPH04107253U - packaging box - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a packaging box particularly suitable for packaging photographic film.

[Conventional technology]

For example, 35mm photographic film is wound up in a cartridge in advance and housed in a resin cylinder with a bottom, and the upper part is wrapped with a resin lid to ensure moisture-proofing and light-shielding properties. It is sold as a product in a rectangular parallelepiped packaging box.

[The problem that the idea attempts to solve]

However, the resin cylinder with a bottom and the lid (hereinafter referred to as resin cans) are unnecessary after the cartridge is removed, so they are discarded. This has led to an increase in the amount of waste. Although it is possible to collect the cartridge, it is difficult in practice due to the high cost of collection. Furthermore, for high-sensitivity films such as ISO3200, it is required to use black or other resin cans, which is a factor in high costs.

Although it is possible to omit the resin can and package the product directly in the packaging box, it lacks moisture resistance and is difficult to maintain photographic performance. In particular, although the openings at both ends of the body are closed by overlapping flaps, they are not completely sealed and are vulnerable to humidity and light shielding.

On the other hand, packaging boxes for beverages are known to be assembled from sheets laminated with plastic films, or for long-term storage, sheets further having an aluminum barrier layer.

In this case, when taking out the contents, such as a drink, the straw is forcibly inserted through the straw opening formed in the paper layer in advance, as shown in FIG. 8, while breaking the laminate layer, or as shown in FIG. 9. 10th method of peeling off the overlapping welds
As shown in the figure, there is a mode in which the overlapping welded portion is cut with scissors.

However, adopting this type of embodiment for a packaging box for photographic film requires a separate tool and requires opening the package wide in order to take out the entire photographic film. There are disadvantages such as difficulty in opening the package easily.

Therefore, the main objective of the present invention is to make the package easy to open and to open the package wide.

[Means to solve the problem]

The above problem is solved by assembling and forming sheets of a predetermined shape that have a paper layer as a base material layer on the front side and at least a moisture-proof wreck layer on the back side, in which both sides of the sheets are pasted together. Forming the body of the box, a part of the side edge of the laminated upper sheet is made into a non-adhesive tab, and it extends along the circumferential direction of the body on both sides of the tab and penetrates the entire sheet. By forming a cut that has a function of facilitating the rupture of the paper to the vicinity of the border of the bonded portion, and following this cut, a perforation is formed that penetrates the paper layer but does not penetrate the fractured layer. Solvable.

Here, the term "notch" refers to a form of processing for facilitating breakage, and particularly refers to a perforation, a notch, or a combination thereof as in the examples described later.

[Effect]

According to the invention, by pinching the tab and pulling it in the circumferential direction of the barrel, it can be broken along the first perforation. At this time, since the first perforation penetrates through the fractured layer, the whole can be easily fractured. In the case of a notch, the tab can be moved from the tab portion to the second perforation by picking up the tab, pulling it up, and pulling it in the circumferential direction. If the rupture or transition continues, even if the second perforation does not penetrate all the way to the fractured layer, the second perforation is not a bonded part, but simply a single sheet part. Moreover, since the inertial force of the first break or the tensile force of the tab along the first perforation has increased by the time it reaches the second perforation, when trying to break the second perforation, Also, difficult faults are easily ruptured. Therefore, rupture progresses easily overall.

On the other hand, since the second perforation does not reach the moisture-proof failure layer, the moisture-proof property of the packaging box is maintained.

Furthermore, since the packaging box according to the present invention is moisture-proof, the cartridge can be directly stored in the packaging box according to the present invention without using a resin can. In this case, unlike conventional packaging that required both a resin can and an exterior carton, a packaging box alone is sufficient, which prevents excessive packaging and an increase in the amount of plastic waste. , thereby helping to solve environmental and waste problems.

On the other hand, since the packaging box has moisture-proof and light-shielding properties, the characteristics of the photographic film will not be degraded. There is no problem even when packaging high-sensitivity films, and compared to using resin cans in combination, costs can be significantly reduced.

〔Example〕

Hereinafter, the present invention will be explained in more detail by way of examples with reference to the drawings.

1 to 5 show a first embodiment, in which 1 is a cartridge on which a 35 mm photographic film is wound, and this cartridge 1 is a packaging box 10 according to the present invention.
It is sealed either directly inside the container or in a resin can.

The packaging box 10 has the following structure, unlike a conventional 35 mm photographic film carton.

That is, as in the layer structure example shown in FIG. 5, which will be described in detail later, the front side has a paper layer 10C as a base material layer, and the back side has at least a moisture-proof wreck layer, such as an aluminum layer 10F and/or a thermoplastic layer. Resin layer 1
It is assembled into a rectangular box shape using sheets of a predetermined shape with 0G.

A developed view of the seat before assembly is shown in FIG. That is, the body part 11 is formed by the first body part 11A, the second body part 11B, the third body part 11C, the fourth body part 11D, and the bonding margin part 11E, and the body part 11 is formed by the bonding margin part 11E. The side edges of the first body part 11A are overlapped from above and fixed with hot melt adhesive or the like.

In addition, the first body part 11A, the second body part 11B, the third body part 11A,
Flap portions 12A, 12B, 12C, 1 are integrally provided at both longitudinal ends of the body portion 11C and the fourth body portion 11D.
2D is extended and formed.

On the other hand, a tab 13 for picking is formed to protrude from the side edge of the upper layer side sheet of the above-mentioned lamination, that is, the first body portion 11A, and this tab 13 is not adhered to the surface of the box. Further, first perforations 14 are formed along the circumferential direction of the trunk portion, extending through both sides of the tabs 13 and penetrating the entire sheet, up to near the border of the bonded portion. Continuing with the perforation 14, a second perforation 15 is formed which penetrates the paper layer 10C but does not penetrate the wrecked layer. The manner in which these perforations 14, 15 are formed is shown in FIG. In this Figure 3, the easy-to-fail fault 10X and the difficult-to-fail fault 10Y are simply
(See Figure 5).

The packaging box 10 is assembled along the fold lines shown in FIG. As can be easily inferred from the same figure, the valley-folded flap 12A and the flap 12
A flap 12D is placed on top of C, and a flap 12B is placed on top of that. Further, each overlapping portion is fixed and sealed by heat sealing or hot melt adhesive.

When opening the bag, the bag can be broken along the first perforation 14 by pinching the tab 13 and pulling it in the circumferential direction of the body. At this time, since the first perforation 14 penetrates the unbreakable layer 10Y, the whole can be easily broken. Subsequently, when the rupture is further advanced, even though the second perforation 15 does not penetrate up to the fractured layer 10Y, the part of the second perforation 15 is not a bonded part but simply a single sheet part. Because of this, the inertia of the first break along the first perforation 14 has increased by the time it reaches the second perforation 15, so when trying to break the second perforation, it becomes easier to break. The wrecked fault 10Y is also broken. Therefore, rupture progresses easily overall.

On the other hand, since the second perforation 15 does not reach the moisture-proof wreck layer 10Y, the moisture-proof property of the packaging box 10 is maintained.

On the other hand, it is conceivable that the first perforation 14 also does not penetrate the wrecked fault 10Y. However, the peeling force acts in the direction of the imaginary lines L and L in FIG. 7, and not only does it not follow the perforation, but also the broken layer 10Y is integrated with the bonding margin 11E. Therefore, it is difficult to open the package with normal fingertip force. On the other hand, the first perforation 14 in the bonded portion allows the sheet to be opened easily by passing through the sheet.

As shown in the figure, sub-perforations 15a and 15b can be formed in the body portion 11B and the body portion 11D continuously from the perforation 15 on the end side. It is also possible to form a secondary perforation continuously on the central perforation 15.

FIG. 6 shows another embodiment, in which a non-adhesive tab 13A is formed on the first body portion 11A. In this case, as shown, V
It is tab 1 that forms the letter-shaped notches 16, 16.
Suitable for picking up 3.

On the other hand, in the above example, the first perforation 14
The first perforation 14 can be replaced by a groove with a small groove angle, preferably a groove angle of 45 degrees, as shown in FIG. The V-shaped notches 16A, 16A having an angle of 30 degrees or less can be formed up to the position where the bonding margin 11E ends. In this case, the V-shaped notch 16
A, 16A is the "slit" referred to in the present invention.

Further, following the terminal ends of the V-shaped notches 16A, 16A, a first perforation is formed up to the position where the bonding margin 11E ends, and after that, a second perforation 15 is formed.
It is also possible to do this.

The sheet constituting the packaging box 10 may have a layered structure shown in FIG. 3. That is, a paper layer 10C of 250 to 350 μm has a printing layer 10B for product display and design on the outer surface and a resin coat layer 10A for providing gloss, etc., and an adhesive layer 10D on the inner surface. It mainly has an aluminum layer 10E for light shielding and moisture proofing, and a thermoplastic resin layer 10G with an adhesive layer 10F interposed therebetween.

In the above layer configuration, it is of course preferable to provide the print layer 10B and the resin coat layer 10A, but they are not essential. As the aluminum layer 10E, 5
It is preferable to use aluminum foil with a thickness of ~20 μm, but
~100μm flexible aluminum sheet, 10
It can be replaced with a flexible sheet having an aluminum vapor deposition layer of 0 to 1500 Å. The thermoplastic resin layer 10G may be made of high density polyethylene, low density polyethylene, ethylene-vinyl acetate copolymer, polypropylene, vinyl chloride, vinylidene chloride, etc., and preferably has a thickness of 10 to 100 μm. This thermoplastic resin layer 1
Carbon black, aluminum powder, etc. can also be mixed and dispersed in 0G as a light shielding material and a moisture barrier material. The adhesive layer 10F is unnecessary when the thermoplastic resin layer 10G is bonded to the aluminum layer 10E by thermal welding. When the thermoplastic resin layer 10G is transparent, printing can be applied to the inner surface of the aluminum layer 10E. Further, the thermoplastic resin layer 10G is preferably a uniaxially oriented film, and the orientation direction is set at the perforations 14 and 1.
5 (that is, the circumferential direction of the trunk) is preferable because it has excellent breakability.

Although not shown, the packaging box may have a shape other than a rectangular cross section, other polygons, a circle, an ellipse, or the like.

In addition to 35 mm photographic film, other sizes can of course be used for packaging in the packaging box of the present invention, and high-sensitivity films can also be packaged because they have excellent light-shielding and moisture-proofing properties. Although it is originally preferable to package these films directly in a packaging box, the packaging box of the present invention is also effective for packaging conventional resin cans filled with photographic film. . It is also possible to package other products (objects) that require moisture resistance.

[Effect of idea]

As described above, according to the present invention, it is easy to open the package, there is no deterioration in moisture resistance, and the package can be opened wide and the contents can be taken out without requiring any additional tools.

[Brief explanation of drawings]

Fig. 1 is a developed view of the packaging box of the first embodiment; Fig. 2 is a perspective view of the main parts of the packaging box after assembly; Fig. 3 is an enlarged perspective view thereof; Fig. 4 is an overall perspective view; Fig. 6 is a perspective view of the main parts of the packaging box after assembly. A perspective view of another example, FIG. 7 is a perspective view for explaining the operating state of peeling force, FIGS. 8 to 10 are perspective views of conventional packaging forms, and FIG. 11 is a perspective view of still another example. It is. 1...Patrone, 10...Packaging box, 11A~
11D... body, 13, 13A... tab, 14...
...First perforation (notch), 15...Second perforation, 16A...V-shaped notch (notch), 10X...Easy-to-break layer, 10Y...Moisture-proof, unbreakable layer.

Correction: 5/22/2019
The brief description of the drawing has been amended as follows. In the 3rd line of page 14 in the brief description of the specification and drawings section, after ``Figure 4 is a perspective view of the entire structure,'' insert ``Figure 5 is a cross-sectional view of the layer structure side.''

Claims (1)

[Claims for Utility Model Registration] In a box formed by assembling sheets of a predetermined shape having a paper layer as a base material layer on the front side and at least a moisture-proof wreck layer on the back side, both sides of the sheets are pasted together to form the body of the box, and a part of the side edge of the upper sheet of the pasted sheet is made into a non-adhesive tab, which is continuous on both sides of the tab along the circumferential direction of the body. A slit is formed near the boundary of the bonded portion, and the slit is connected to the slit to penetrate the paper layer but not the broken layer. A packaging box characterized by forming eyes.