Multi-package and packaging system

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

[Technical Field]

[0001] The present invention relates to multi-packages and packaging systems. [Background technology]

[0002] A known specification for packaging precision machinery products is the "multi-packaging specification," in which the product (packaged item 1) is wrapped in inner packaging material 2 to secure the product, then placed in an inner cardboard box 3, and then outer cushioning material 4 for shock absorption is attached to this inner box 3, and the product is then placed in an outer box 5 for packaging (see Figure 1).

[0003] This multiple packaging specification is adopted when the following two conditions are met to ensure product protection quality. (Condition 1) When the packaged item 1 has low rigidity and there is a risk of structural deformation due to its own weight, vibrations or impacts from dropping during transportation, and fixation and rigidity support by the inner packaging material 2 and the inner box 3 are required (see Figure 1(a)). (Condition 2) When the packaged item 1 has many protruding shapes (pins, gears, etc.) on its exterior, and if a shock-absorbing packaging material 6 such as cardboard is attached directly to the packaged item 1, there is a risk that holes will be made in the packaging material or that the protruding shapes of the packaged item 1 will be damaged (see Figure 2). It is generally difficult to form a complex uneven shape in the shock-absorbing packaging material 6 such as corrugated cardboard.

[0004] 3 is a plan view of the multiple packaging specification shown in FIG. 1(b) viewed from the top. In the multiple packaging specification, shock-absorbing exterior cushioning material 4 is attached to the inner box 3, so that the vibration and drop impact (i.e., impact acceleration) that the packaged item 1 experiences during logistics can be absorbed by the characteristics (actions) of the exterior cushioning material 4, primarily the compressive deformation and compressive stress. For example, even if the packaged item 1 is subjected to an impact acceleration of up to several hundred Gs, a technology is known and already in use that can reduce the impact acceleration to less than 100 Gs by using the exterior cushioning material 4.

[0005] As an example, Patent Document 1 discloses a cushioning material that has shock-absorbing properties and is made of pulp mold, and is formed by unfolding the required three-dimensional structure into an appropriate flat structure in advance so that the required three-dimensional structure can be matched to the shape of the item, and then folding a specified portion at the time of use to form the required three-dimensional structure. Summary of the Invention [Problem to be solved by the invention]

[0006] Incidentally, conventional shock-absorbing exterior cushioning material 4 is provided at the corners 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 exterior cushioning material 4. This compressive stress characteristic is formed by the thickness of each of the inner packaging material 2 and the exterior cushioning material 4, and / or the combined cushioning distance (see Figure 4) which is the sum of the distance from the packaged item to the exterior box.

[0007] The point of maximum efficiency for impact buffering due to this compressive stress characteristic is when the compressive strain is 0.5 to 0.65, and it is already known that this is the limit of the impact buffering function for this configuration. Furthermore, the impact buffering function of the combination of the inner packaging material 2 and the outer cushioning material 4 was almost the same even when the same buffering distance was provided with a single cushioning material, without using multiple packaging specifications.

[0008] As such, little consideration has been given to further improving the shock absorbing function by utilizing the unique structure of the multi-packaging specification, and this has not been realized.

[0009] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a multi-layer packaging body that can improve the shock absorbing function compared to conventional specifications. [Means for solving the problem]

[0010] The above problem is solved by a multi-packaging body including an inner box having an inner packaging material therein for fixing a packaged object, an outer box for storing the inner box, and an outer cushioning material provided between the inner box and the outer box, wherein the outer cushioning material is A sheet of material that, when folded, forms a three-dimensional structure having surfaces corresponding to the respective surfaces of the inner box. A flat plate and When the three-dimensional structure is expanded into a planar structure, the three-dimensional structure is provided on each expanded surface of the flat plate.at least one shock absorbing member; The impact buffering member is located on the opposite side of the inner box from the inner packaging material, and In planar view And, in front The inner packaging material of the inner box Spaced apart with no overlap Place in position When subjected to vibration or drop impact, the corresponding surface of the inner box is bent and deformed, and compressive stress is applied to the inner packaging material, as well as bending stress. This problem is solved by a multiple package characterized by the above. [Effects of the Invention]

[0011] When the multi-package of the present invention is subjected to an impact, bending stress as well as compressive stress is generated in the interior packaging material and the impact-absorbing member. Normally, the bending reaction force is lower than the compressive reaction force, so the multi-package of the present invention can improve the impact-absorbing function compared to conventional specifications. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of a conventional multiple packaging specification. [Figure 2] FIG. 2 is a perspective view of a packaged object and an impact-absorbing packaging material that is directly attached to the packaged object. [Figure 3] FIG. 2 is a plan view of the multiple packaging specification of FIG. 1(b) as seen from the top. [Figure 4] FIG. 10 is a plan view showing the cushioning distance when the interior packaging material and the exterior cushioning material are combined. [Figure 5] 1A is a perspective view of a multi-package before packaging according to one embodiment of the present invention, and FIG. 1B is a perspective view of the multi-package after packaging. [Figure 6] 1A is a perspective view of the exterior cushioning material of this embodiment, and FIG. 1B is a development view of the exterior cushioning material. [Figure 7] 1 is a cross-sectional view of the multi-package body of the present embodiment as viewed from the top surface. [Figure 8] 8 is a diagram showing a state of deformation when the multi-package body of FIG. 7 is subjected to vibration or a drop impact. [Figure 9] 10 is a graph showing reaction force characteristics of a conventional configuration and the present embodiment. [Figure 10] FIG. 10 is a development view (part 1) of an exterior cushioning material according to a modified example of the present invention. [Figure 11] FIG. 10 is a second development view of an exterior cushioning material according to a modified example of the present invention. [Figure 12] FIG. 10 is a perspective view of an exterior cushioning material according to a modified example of the present invention. [Figure 13] FIG. 10 is a perspective view of a shock-absorbing member according to a modified example of the present invention. [Figure 14] FIG. 1(a) is a perspective view showing a flat plate on which cut-and-raised portions are formed, and FIG. 1(b) is a perspective view showing a flat plate including a shock-absorbing member fixed to the cut-and-raised portions. DETAILED DESCRIPTION OF THE INVENTION

[0013] Fig. 5(a) is a perspective view of a multi-package according to one embodiment of the present invention before packaging, and Fig. 5(b) is a perspective view of the multi-package after packaging. As shown in Fig. 5(a), the multi-package 10 comprises an inner box 14 having an inner packaging material 12 therein for securing the packaged item (product), an outer box 16 for housing the inner box 14, and an outer cushioning material 18 provided between the inner box 14 and the outer box 16. Then, as shown in Fig. 5(b), the inner box 14 to which the packaged item is secured is fitted with the outer cushioning material 18 for shock absorption, and the product is then placed in the outer box 16 for packaging, thereby completing the multi-package 10.

[0014] For ease of understanding, Fig. 5 does not show the packaged items (products) contained in the inner box 14. For the multi-package 10 including the packaged items (products), please refer to Fig. 7, which will be described later.

[0015] 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 impact cushioning member 18b attached to the flat plate 18a, and can be folded at a predetermined folding portion 18c during use to form a predetermined three-dimensional structure.

[0016] That is, the flat plate 18a can form a three-dimensional structure having surfaces corresponding to each surface of the inner box 14, and at least one impact buffer member 18b is provided on each expanded surface of the flat plate 18a when the three-dimensional structure is expanded into a planar structure.

[0017] The flat plate 18a is made of cardboard or the like, and the folded portion 18c can be formed by crease processing or half-cutting processing, etc. The shock absorbing member 18b is made of foamed resin (foamed plastic), pulp mold, cardboard, etc. The shock absorbing member 18b is bonded to the flat plate 18a with an adhesive.

[0018] Fig. 7 is a cross-sectional view of the multi-package of this embodiment as seen from the top. As shown in Fig. 7, the impact cushioning members 18b provided on the exterior cushioning material 18 are arranged at positions that do not overlap with the interior packaging material 12 in the interior box 14 in a plan view from the direction of arrow A (or arrow B).

[0019] Due to this configuration, when the multi-package 10 of this embodiment is subjected to vibration or a drop impact, as shown in Fig. 8, a large moment load M is applied to the surface (side surface) of the inner box 14, which acts to push and bend the side surface of the inner box 14. That is, the inner packaging material 12 and the impact-absorbing member 18b are subjected to bending stress in addition to compressive stress.

[0020] Normally, the bending reaction force is lower than the compressive reaction force. Therefore, the reaction force characteristics of the interior packaging material 12 and the impact cushioning member 18b are smaller than those of the conventional configuration (compressive stress characteristics defined by the combined cushioning distance of the interior packaging material 2 and the exterior cushioning material 4 shown in Figures 3 and 4), and the impact acceleration acting on the packaged item 1 can be reduced.

[0021] Fig. 9 is a graph showing the reaction force characteristics of a conventional configuration and this embodiment. In Fig. 9, the horizontal axis represents the amount of deformation (mm) and the vertical axis represents reaction force (N). The reaction force of this embodiment (combined reaction force of compression and bending) rises more gently than that of the conventional configuration (single reaction force of compression), improving the shock absorption function of the package.

[0022] The multi-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.

[0023] Next, a modification of this embodiment will be described.

[0024] (Variation 1) At least two or more impact buffering members 18b may be provided on each developed surface of the flat plate 18a. In Fig. 10, two impact buffering members 18b are provided on one developed surface of the flat plate 18a. By increasing or decreasing the number of impact buffering members 18b, it is possible to provide the multi-layer package 10 with an impact buffering function that matches the rigidity or mass of the packaged object (product).

[0025] (Variation 2) 6, shock absorbing members 18b are provided on each of the developed surfaces of flat plates 18a corresponding to all six faces of the hexahedral inner box 14. This configuration can provide a shock absorbing function on all six faces of the inner box 14. Alternatively, shock absorbing members 18b may be disposed on any face of the inner box 14.

[0026] 11, shock-absorbing members 18b may be provided on each of the deployed surfaces of flat plates 18a corresponding to each side (all four sides) of the inner box 14, excluding the top and bottom sides. If shock-absorbing members 18b are not provided on the top and bottom sides, the dimensions of the outer box 16 can be reduced, thereby achieving downsizing while still ensuring the shock-absorbing function on all four sides.

[0027] (Variation 3) 6, the shock absorbing members 18b are provided so as to protrude toward the surface of the inner box 14. Alternatively, as shown in FIG. 12, the shock absorbing members 18b may be provided so as to protrude toward the surface of the outer box 16.

[0028] When the shock absorbing member 18b is provided so as to protrude toward the surface of the inner box 14 (FIG. 6), the shock absorbing member 18b is configured to abut against the surface of the inner box 14, so that the moment load M can be reliably applied to the side surface of the inner box 14 (see FIG. 8).

[0029] On the other hand, when provided so as to protrude toward the surface of the outer box 16 (FIG. 11), the shock absorbing member 18b presses against the surface of the inner box 14 via the flat plate 18a, thereby reducing the moment load M acting on the surface of the inner box 14. This is advantageous when the rigidity of the inner box 14 itself is low.

[0030] (Variation 4) Figure 13 is a perspective view of a shock-absorbing member according to a modified example of the present invention. 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 Figure 8) acting on the surface of inner box 14, further improving the shock-absorbing function.

[0031] In the multi-package 10 of the present invention, the configuration of the impact buffering member 18b can be selected according to the specifications (configuration) of the packaged item 1, the inner box 14, and / or the outer box 16 to be packaged.

[0032] (Variation 5) Fig. 14(a) is a perspective view showing a flat plate on which a cut-and-raised portion is formed, and Fig. 14(b) is a perspective view showing a flat plate including an impact-absorbing member fixed to the cut-and-raised portion. In attaching impact-absorbing member 18b to flat plate 18a, impact-absorbing member 18b may be provided with a retaining portion 19, and flat plate 18a may be formed with cut-and-raised portion 18d, into which impact-absorbing member 18b may be inserted and fixed.

[0033] This configuration is advantageous in that the flat plate 18a and the shock absorbing member 18b can be easily separated when disposing of the device.

[0034] (Verification test) A comparative verification test of impact acceleration applied to the packaged items between the conventional multi-package and the multi-package of the present invention will be described. Verification method: Using outer boxes of the same size, the impact acceleration applied to the packaged items was measured for the conventional specifications (Fig. 1(b)) and the specifications of the present invention (Fig. 5(b)).

[0035] (Common to both conventional and present specifications) 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 specifications) Exterior cushioning material: EPE material with a foaming ratio of 50 times (t=50mm) (Specifications of the present invention) Shock-absorbing material for exterior cushioning EPE material with a foaming ratio of 50 times (t=50mm) Flat outer cushioning material K5 liner A-flute corrugated cardboard

[0036] Results: The results are shown in Table 1. The results showed that the inventive specifications had a mean impact acceleration value that was approximately 25% smaller than the conventional specifications, and the variation (standard deviation) was also smaller.

[0037] [Table 1]

[0038] From this verification test, it was found that the configuration of the embodiment of the present invention can reduce the impact acceleration applied to the packaged item compared to the configuration of conventional specifications.

[0039] The present invention has been described in detail above using the embodiments. This embodiment is merely an example, and various modifications can be made without departing from the spirit of the present invention. For example, multiple embodiments (modifications) may be combined with each other. [Explanation of symbols]

[0040] 1 Packaged object 2 Interior packaging material 3, 14 Inner box 4. Shock-absorbing exterior cushioning material 5, 16 outer box 6. Shock-absorbing packaging materials 10 multiple packages 12 Interior packaging materials 18 Exterior cushioning material 18a flat plate 18b, 18b' shock absorbing members 18c fold 18d Cut-out section 19 Stopper [Prior art documents] [Patent documents]

[0041] [Patent Document 1] Japanese Patent Application Publication No. 07-61476

Claims

1. an inner box having an inner packaging material therein for fixing the packaged item; an outer box that houses the inner box; an exterior cushioning material provided between the inner box and the outer box; In a multiple package comprising: the exterior cushioning material includes a flat plate that forms a three-dimensional structure having surfaces corresponding to the respective surfaces of the interior box when folded, and at least one impact cushioning member provided on each expanded surface of the flat plate when the three-dimensional structure is expanded into a planar structure; The impact-absorbing member is disposed on the opposite side of the surface of the inner box from the interior packaging material, and at a position separated from the interior packaging material of the inner box without overlapping with the interior packaging material in a plan view, and when subjected to vibration or a drop impact, the impact-absorbing member bends and deforms the corresponding surface of the inner box, causing compressive stress together with the interior packaging material and also bending stress.

2. 2. The multi-package according to claim 1, wherein at least two shock absorbing members are provided for each of the deployed surfaces of the flat plate.

3. The inner box is a hexahedron, 3. The multi-package according to claim 1, wherein at least one shock absorbing member is provided for each of the developed surfaces of the flat plate corresponding to each surface of the inner box.

4. The inner box is a hexahedron, 3. The multi-package according to claim 1, wherein at least one shock absorbing member is provided on each of the developed surfaces of the flat plate corresponding to each side surface of the inner box excluding the top and bottom surfaces.

5. 5. The multi-package according to claim 1, wherein the shock absorbing member is provided so as to protrude toward a surface of the inner box.

6. 5. The multi-package according to claim 1, wherein the shock absorbing member is provided so as to protrude toward a surface of the outer box.

7. 7. The multi-package according to claim 1, wherein the shock absorbing member is made of foamed resin, pulp mold, or corrugated cardboard.

8. 8. The multi-package according to claim 1, wherein the flat plate is made of corrugated cardboard.

9. 9. The multi-package according to claim 1, wherein the shock absorbing member is adhered to the flat plate with an adhesive.

10. 9. The multi-package according to claim 1, wherein the shock absorbing member has a retaining portion and is inserted into a cut-and-raised portion formed on the flat plate to be fixed thereto.

11. 11. The multi-package according to claim 1, wherein the impact buffering member has a tapered shape in which the cross section narrows toward the protruding tip.

12. A packaging system using a multi-packaging body described in any one of claims 1 to 11 in an image forming device.

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