JP2023058879A - Multiple packaging body and packaging system - Google Patents

Abstract

To provide a multiple packaging body capable of improving an impact cushioning function as compared with conventional specifications.SOLUTION: The present invention relates to a multiple packaging body including: an interior box having an interior packaging material for fixing an object to be packaged inside; an external box for storing the interior box; and an outer cushioning material provided between the interior box and the external box. The outer cushioning material has a flat plate and at least one impact cushioning member provided on the flat plate, and the impact cushioning member is arranged at a position not overlapping with the interior packaging material of the interior box in plan view. When the multiple packaging body receives an impact, bending stress is generated in addition to compressive stress in the interior packaging material and the impact cushioning member. Since bending reaction force usually has low action force with respect to compression reaction force, the multiple packaging body can improve an impact cushioning function as compared with the conventional specifications.SELECTED DRAWING: Figure 7

Description

The present invention relates to multiple packages and packaging systems.

As a specification for packaging a precision machinery product, the product (object to be packaged 1) is placed in an inner packaging material 2 for fixing the product and then placed in an inner box 3 made of corrugated cardboard, and the inner box 3 is provided with an outer shock-absorbing shock absorber. A "multiple packaging specification" is known in which a material 4 is mounted and then packaged in an exterior box 5 (see FIG. 1).

This multi-packaging specification is adopted when the following two conditions are met in order to ensure product protection quality.
(Condition 1) The rigidity of the object to be packaged 1 is low, and structural deformation may occur due to its own weight, vibration received during distribution, or impact from a drop. When (see FIG. 1(a)).
(Condition 2) There are many projections (pins, gears, etc.) on the outer shape of the object to be packaged 1, and the impact-absorbing packaging material 6 such as corrugated cardboard that is directly attached to the object to be packaged 1 may have holes in the packaging material. , when there is a risk of damage to the projecting shape of the package 1 (see FIG. 2).
In addition, it is generally difficult to form a complex concave-convex shape on the shock-absorbing packaging material 6 such as corrugated cardboard.

FIG. 3 is a top plan view of the multiple packaging specification of FIG. 1(b). In the multi-packaging specification, since the outer shock-absorbing shock-absorbing material 4 is attached to the inner box 3, the vibration and drop impact (i.e., impact acceleration) received by the packaged object 1 during distribution is reduced by the compression of the outer shock-absorbing material 4. It can be buffered by characteristics (effects) mainly of deformation and compressive stress. For example, there is a known technology that can reduce the impact acceleration to 100 G or less by using the outer cushioning material 4 even when the object to be packaged 1 is subjected to impact acceleration of several hundred G at maximum, and has already been implemented. there is

As an example, Patent Literature 1 discloses that a required three-dimensional structure is developed in advance into an appropriate planar structure so as to obtain a cushioning material made of pulp mold that is suitable for the shape of the article, and the cushioning material is used. A cushion material is disclosed in which a predetermined portion is folded to form a desired three-dimensional structure.

By the way, the conventional shock-absorbing external shock-absorbing material 4 is provided at the corner of the inner box 3, and the shock-absorbing function of the entire package depends on the compressive stress characteristics (action) of the inner packaging material 2 and the external shock-absorbing material 4. It is due to This compressive stress characteristic is formed by the thickness of each of the inner packaging material 2 and the outer cushioning material 4 and/or the combined cushioning distance (see FIG. 4) that is the sum of the distances from the object to be packaged to the outer box.

It is already known that the maximum efficiency point of impact cushioning by this compressive stress characteristic is under the condition that the compressive strain is 0.5 to 0.65, and this is the limit point of the impact cushioning function in this configuration. In addition, the shock absorbing function of the combination of the interior packaging material 2 and the exterior cushioning material 4 is to obtain almost the same shock absorbing function even if the equivalent cushioning distance is provided with one cushioning material without using multiple packaging specifications. was made.

In this way, the use of the unique structure of the multi-packaging specification to further improve the shock absorbing function has not been considered and implemented.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a multi-layered package that can improve the shock absorbing function as compared with the conventional specification.

The above-mentioned problem is provided with an inner box having an inner packaging material for fixing an object to be packaged inside, an outer box containing the inner box, and an outer cushioning material provided between the inner box and the outer box. In the multiple package, the outer shock-absorbing material has a flat plate and at least one shock-absorbing member provided on the flat plate, and the shock-absorbing member overlaps with the inner packing material of the inner box in plan view. It is solved by a multi-pack, characterized in that it is arranged in a position where the

When the multiple package of the present invention receives an impact, bending stress is generated in addition to compressive stress in the inner packaging material and the shock absorbing member. Since the bending reaction force is usually a lower acting force than the compression reaction force, the multiple package of the present invention can improve the shock absorbing function as compared with the conventional specification.

It is a perspective view of a multiple packaging specification according to the conventional specification. 1 is a perspective view of an object to be packaged and a shock-absorbing packaging material to be directly attached to the object to be packaged; FIG. It is the top view which looked at the multiple packaging specification of FIG.1(b) from the top surface. FIG. 4 is a plan view showing a combined buffering distance of the interior packaging material and the exterior cushioning material; (a) is a perspective view of a multi-package before packaging according to one embodiment of the present invention, and (b) is a perspective view of a multi-package after packaging. (a) is a perspective view of the exterior cushioning material of this embodiment, and (b) is a development view of the exterior cushioning material. FIG. 2 is a cross-sectional view of the multi-packaging body of the present embodiment as seen from the top surface direction; FIG. 8 is a diagram showing a deformed state when vibration or drop impact is applied to the multiple package of FIG. 7; It is a graph which shows the reaction force characteristic of a conventional structure and this embodiment. FIG. 11 is a development view (Part 1) of an exterior cushioning material according to a modification of the present invention; FIG. 11 is a development view (part 2) of an exterior cushioning material according to a modification of the present invention; FIG. 11 is a perspective view of an exterior cushioning material according to a modification of the present invention; FIG. 5 is a perspective view of a shock absorbing member according to a modified example of the present invention; (a) is a perspective view showing a flat plate on which a cut-and-raised portion is formed, and (b) is a perspective view showing a flat plate including a shock absorbing member fixed to the cut-and-raised portion.

FIG. 5(a) is a perspective view of the multi-package before packaging, and FIG. 5(b) is a perspective view of the multi-package after packaging, according to one embodiment of the present invention. As shown in FIG. 5(a), the multiple package 10 includes an inner box 14 having an inner packaging material 12 for fixing an object to be packaged (product) therein, an outer box 16 containing the inner box 14, and an inner An exterior cushioning material 18 provided between the box 14 and the exterior box 16 is provided. Then, as shown in FIG. 5(b), the inner box 14 to which the object to be packaged is fixed is fitted with an outer cushioning material 18 for shock absorption, and the multi-wrapped body 10 is packaged by putting it in the outer box 16 and packaging it. becomes.

For the sake of clarity, FIG. 5 omits the objects to be packaged (products) housed in the inner box 14 . For the multiple package 10 including the package (product), see FIG. 7 and the like, which will be described later.

FIG. 6(a) is a perspective view of the exterior cushioning material of this embodiment, and FIG. 6(b) is a developed view of the exterior cushioning material. The exterior cushioning material 18 is composed of one flat plate 18a and at least one shock-absorbing member 18b provided on the flat plate 18a, and can be formed into a prescribed three-dimensional structure by bending a predetermined bent portion 18c during use.

That is, the flat plate 18a can form a three-dimensional structure having a surface corresponding to each surface of the inner box 14, and at least one shock absorbing member 18b is provided for each developed surface of the flat plate 18a obtained by developing the three-dimensional structure into a planar structure. is provided.

The flat plate 18a is formed of corrugated cardboard or the like, and the bent portion 18c can be formed by ruled line processing or half cutting processing. The shock absorbing member 18b is made of foamed resin (foamed plastic), pulp mold, cardboard, or the like. The shock absorbing member 18b is adhered to the flat plate 18a with an adhesive.

FIG. 7 is a cross-sectional view of the multi-packaging body of this embodiment viewed from the top surface direction. As shown in FIG. 7, the shock-absorbing member 18b provided on the exterior cushioning material 18 is arranged at a position that does not overlap the interior packaging material 12 in the interior box 14 in plan view from the direction of arrow A (or arrow B). It is

Due to such a configuration, when the multiple package 10 of this embodiment is subjected to vibration or drop impact, a large moment load M is applied to the surface (side surface) of the inner box 14 as shown in FIG. , an action of pushing and bending the side surface of the inner box 14 is generated. That is, the interior packaging material 12 and the shock absorbing member 18b are subjected to bending stress in addition to compressive stress.

Bending reaction force is usually a lower acting force than compression reaction force. Therefore, the reaction force characteristics of the interior packaging material 12 and the shock absorbing member 18b are lower than those of the conventional configuration (the compressive stress characteristics defined by the combined cushioning distance of the interior packaging material 2 and the exterior cushioning material 4 shown in FIGS. 3 and 4). Also, the impact acceleration applied to the package 1 can be reduced.

FIG. 9 is a graph showing the reaction force characteristics of the conventional configuration and the present embodiment. In FIG. 9, the horizontal axis is the amount of deformation (mm), and the vertical axis is the reaction force (N). In the present embodiment (composite reaction force of compression and bending), the rise of the reaction force is gentler than in the conventional structure (single reaction force of compression), and the shock absorbing function of the package can be improved.

The multiple package of this embodiment can be used as a packaging system for packaging an image forming apparatus (for example, a copying machine, a printing machine, etc.) as an object to be packaged.

Next, a modified example of this embodiment will be described.

(Modification 1)
At least two shock absorbing members 18b may be provided for each developed surface of the flat plate 18a. In FIG. 10, two shock absorbing members 18b are provided on one of the developed surfaces of the flat plate 18a. By increasing or decreasing the number of shock absorbing members 18b, the multiple package 10 can have a shock absorbing function suitable for the rigidity or mass of the object to be packaged (product).

(Modification 2)
In FIG. 6, shock absorbing members 18b are provided on the flat plates 18a corresponding to all six surfaces of the hexahedral inner box 14. As shown in FIG. This configuration can exert a shock absorbing function on all six sides of the inner box 14. - 特許庁Alternatively, the shock absorbing member 18b may be arranged on any surface of the inner box 14. As shown in FIG.

For example, as shown in FIG. 11, a shock absorbing member 18b may be provided on each development surface of a flat plate 18a corresponding to each side surface (four surfaces in total) of the inner box 14 except for the top surface. Since the size of the exterior box 16 can be reduced without providing the shock absorbing member 18b on the top surface, it is possible to secure the shock absorbing function on all four sides and downsizing.

(Modification 3)
6, the shock absorbing member 18b is provided so as to protrude toward the surface of the inner box 14. As shown in FIG. Alternatively, as shown in FIG. 12, the shock absorbing member 18b may be provided so as to protrude toward the surface of the exterior box 16. As shown in FIG.

When provided so as to protrude toward the surface of the inner box 14 (FIG. 6), the shock absorbing member 18b contacts the surface of the inner box 14, so that the moment load M is reliably applied to the side surface of the inner box 14. can be activated (see FIG. 8).

On the other hand, when the shock absorbing member 18b is provided so as to protrude toward the surface of the outer box 16 (FIG. 11), the shock absorbing member 18b presses the surface of the inner box 14 via the flat plate 18a. The moment load M acting on the surface can be reduced. This is advantageous when the inner box 14 itself has a low rigidity.

(Modification 4)
FIG. 13 is a perspective view of a shock absorbing member according to a modification of the invention. The shock absorbing member 18b' has a tapered shape in which the cross section narrows toward the protruding tip. This configuration can further increase the moment load M (see FIG. 8) acting on the surface of the inner box 14, thereby further improving the shock absorbing function.

The multiple package 10 of the present invention can be used by selecting the configuration of the shock absorbing member 18b according to the specification (configuration) of the package 1, the inner box 14, and/or the outer box 16 to be packaged.

(Modification 5)
FIG. 14(a) is a perspective view showing a flat plate on which cut-and-raised portions are formed, and FIG. 14(b) is a perspective view showing a flat plate including shock absorbing members fixed to the cut-and-raised portions. Regarding the attachment of the shock absorbing member 18b to the flat plate 18a, the shock absorbing member 18b is provided with a retaining portion 19, a cut-and-raised portion 18d is formed on the flat plate 18a, and the shock-absorbing member 18b is inserted and fixed into the cut-and-raised portion 18d. You may

This configuration is advantageous in that the flat plate 18a and the shock absorbing member 18b can be easily separated for disposal.

(verification test)
A comparative verification test of the impact acceleration applied to the objects to be packaged using the conventional specification and the specification of the present invention will be described.
Verification method: In the conventional specification (Fig. 1(b)) and the specification of the present invention (Fig. 5(b)), the impact acceleration applied to the object to be packaged was measured using outer boxes of the same size.

(Common to both the conventional specification and the present invention specification)
Outer box JISZ0201A type outer box (Material: K5 liner A flute outer box)
Inner box JISZ0201A type outer box (Material: K5 liner A flute outer box)
(conventional specification)
Exterior cushioning material EPE material with a foaming ratio of 50 times (t = 50 mm)
(Specifications of the present invention)
Shock-absorbing material for external shock-absorbing material EPE material with a foaming ratio of 50 times (t = 50 mm)
Flat plate of exterior cushioning material K5 liner A flute corrugated board

Results: Table 1 shows the results.
Compared to the conventional specification, the invention specification has a result that the impact acceleration average value is about 25% smaller and the variation (standard deviation) is also smaller.

From this verification test, it was found that according to the configuration of the embodiment of the present invention, the impact acceleration applied to the package can be reduced compared to the configuration of the conventional specification.

The present invention has been described in detail above using the embodiments. This embodiment is an example, and can be used with various modifications within the scope of the invention. For example, multiple embodiments (modifications) may be combined.

1 object to be packaged 2 interior packaging material 3, 14 interior box 4 exterior cushioning material for impact cushioning 5, 16 exterior box 6 packaging material for impact cushioning 10 multiple package 12 interior packaging material 18 exterior cushioning material 18a flat plate 18b, 18b' impact Cushioning member 18c Bent portion 18d Cut-and-raised portion 19 Retaining portion

JP-A-07-61476

Claims (13)

an inner box having therein an inner packaging material for fixing an object to be packaged;
an outer box that houses the inner box;
an exterior cushioning material provided between the interior box and the exterior box;
In a multiple package comprising
The exterior cushioning material has a flat plate and at least one shock-absorbing member provided on the flat plate,
A multiple package, wherein the shock absorbing member is arranged at a position not overlapping the inner packaging material of the inner box when viewed from above. The flat plate can form a three-dimensional structure having surfaces corresponding to each surface of the inner box,
2. The multi-pack package according to claim 1, wherein at least one shock absorbing member is provided on each developed surface of said flat plate obtained by developing said three-dimensional structure into a planar structure. 3. The multiple package according to claim 2, wherein at least two or more shock absorbing members are provided for each developed surface of said flat plate. The inner box is a hexahedron,
4. The multiple package according to claim 2 or 3, wherein at least one shock absorbing member is provided for each expanded surface of said flat plate corresponding to each surface of said inner box. The inner box is a hexahedron,
4. The multiple package according to claim 2 or 3, wherein at least one shock absorbing member is provided for each development surface of said flat plate corresponding to each side surface of said inner box except for the top surface. 6. The multiple package according to any one of claims 1 to 5, wherein the shock absorbing member is provided so as to protrude toward the surface of the inner box. 6. The multiple package according to any one of claims 1 to 5, wherein the shock absorbing member is provided so as to protrude toward the surface of the exterior box. 8. The multiple package according to any one of claims 1 to 7, wherein the shock absorbing member is made of foamed resin, molded pulp, or corrugated cardboard. 9. The multiple package according to any one of claims 1 to 8, wherein the flat plate is made of cardboard. 10. The multiple package according to any one of claims 1 to 9, wherein the shock absorbing member is adhered to the flat plate with an adhesive. 10. The multiple package according to any one of claims 1 to 9, wherein the shock-absorbing member has a retaining portion and is fixed by being inserted into the cut-and-raised portion formed on the flat plate. 12. The multiple package according to any one of claims 1 to 11, wherein the shock absorbing member has a tapered shape with a cross section narrowing toward the projecting tip. A packaging system using the multiple package according to any one of claims 1 to 12 in an image forming apparatus.

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