Packaging Cushioning Material

Abstract

To provide a packaging cushioning material which protects a packaged item from impact while suppressing costs. [Solution] The packaging cushioning material 1 comprises a plate-like member 2 having a rectangular bottom plate portion 4 on whose surface the packaged item C is placed, a pair of bottom side fold portions 5 which are foldably connected to each of a pair of first end portions 6 of the bottom plate portion 4 and folded back to the back side of the bottom plate portion 4, and a film sheet 3 which covers the surface of the bottom plate portion 4 and is provided from one bottom side fold portion 5 to the other bottom side fold portion 5, and the pair of bottom side fold portions 5 have a bottom side first portion 7 which is folded at the first end portion 6 toward the inside in the width direction of the bottom plate portion 4 and overlaps the bottom plate portion 4, a bottom side second portion 8 which is folded at the end of the bottom side first portion 7 toward the outside in the width direction of the bottom plate portion 4 and overlaps the bottom side first portion 7, and a bottom side third portion 9 which is folded at the end of the bottom side second portion 8 toward the inside in the width direction of the bottom plate portion 4 and overlaps the bottom side second portion 8.

Description

[Technical field]

[0001] The present invention relates to a cushioning material for packaging. [Background technology]

[0002] A known cushioning material for packaging that protects an object to be packaged from impact includes a plate-shaped member on which the object is placed and a stretchable film sheet, and when the film sheet is pulled, the object is sandwiched between the plate-shaped member and the film sheet, thereby holding the object in a fixed position (see, for example, Patent Document 1). The cushioning material is packed in, for example, a rectangular box, and the object is transported while being held by the cushioning material in the box. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 9-501128 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, the cushioning material is generally placed directly inside the box, and no separate cushioning material is placed between the cushioning material and the box. For this reason, if the box is roughly handled during transportation, the impact applied to the box acts directly on the cushioning material, and as a result, the impact is transmitted to the packaged item held by the cushioning material, which may cause damage to the packaged item. On the other hand, using a separate cushioning material placed between the cushioning material and the box would result in increased costs.

[0005] In view of these points, the present invention aims to provide a cushioning material for packaging that is excellent in protecting the packaged items from impacts and the like while keeping costs down. [Means for solving the problem]

[0006] The cushioning material for packaging of the present invention comprises a plate-shaped member having a rectangular bottom plate portion on whose surface the packaged item is placed, a pair of bottom side fold portions which are foldably connected to each of a pair of opposing first ends of the bottom plate portion and folded back to the back side of the bottom plate portion, and a film sheet which covers the surface of the bottom plate portion and extends from one of the bottom side fold portions to the other of the bottom side fold portions, and the pair of bottom side fold portions have a bottom side first portion which is folded at the first end toward the inside in the width direction of the bottom plate portion and overlaps with the bottom plate portion, a bottom side second portion which is folded at an end of the bottom side first portion toward the outside in the width direction of the bottom plate portion and overlaps with the bottom side first portion, and a bottom side third portion which is folded at an end of the bottom side second portion toward the inside in the width direction of the bottom plate portion and overlaps with the bottom side second portion. Effect of the Invention

[0007] According to the present invention, it is possible to improve the effectiveness of protecting the packaged items from impacts and the like while keeping costs down. [Brief description of the drawings]

[0008] [Figure 1] 1 is a schematic perspective view showing an embodiment of a cushioning material for packaging according to the present invention, in which an object to be packaged is packaged; [Diagram 2] 2 is a cross-sectional view taken along line AA shown in FIG. [Diagram 3] FIG. 2 is a cross-sectional view taken along line BB shown in FIG. [Figure 4] FIG. 2 is a development view of the cushioning material shown in FIG. 1. [Diagram 5] 2 is a schematic perspective view showing a state in which the cushioning material for packaging shown in FIG. 1 is housed in a box. FIG. [Figure 6] 6 is a partially enlarged cross-sectional view taken along CC shown in FIG. 5 after the cushioning material for packaging has been placed in the box. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the embodiment of the present invention will be described in detail with reference to the drawings. In the description, the same or corresponding elements will be designated by the same reference numerals, and duplicated descriptions will be omitted. For convenience of description, an XYZ Cartesian coordinate system will be used in which the horizontal direction is the X-axis direction and the Y-axis direction, and the vertical direction is the Z-axis direction.

[0010] FIG. 1 is a schematic perspective view of a packaging cushioning material 1, which is one embodiment of the packaging cushioning material according to the present invention. FIG. 1 shows a state in which an object C is packed with the packaging cushioning material 1. FIG. 2 is a cross-sectional view along AA shown in FIG. 1, and FIG. 3 is a cross-sectional view along BB shown in FIG. 1. FIG. 4 is a development view of the packaging cushioning material 1. The packaging cushioning material 1 is used to pack, for example, precision instruments or fragile items that are easily damaged by impact as the object C, and has a function of cushioning (buffering) impact during transportation of the object C. The object C may be a general delivery item that is relatively resistant to impacts. As shown in FIG. 5, the packaging cushioning material 1 is transported in a box P, for example, in a rectangular parallelepiped shape, with the object C packed therein.

[0011] The cushioning material 1 includes a plate-shaped member 2 and a film sheet 3. First, the plate-shaped member 2 will be described in detail below, and then the film sheet 3 will be described in detail.

[0012] The plate-like member 2 is, for example, a sheet of cardboard. The plate-like member 2 of this embodiment has the form shown in Fig. 4 when unfolded, and becomes the form shown in Fig. 1 when folded as described below.

[0013] The plate-like member 2 has a rectangular shape in a plan view and a bottom plate portion 4 on which the packaged item C is placed. The bottom plate portion 4 in this embodiment has an elongated rectangular shape in which the length in the Y-axis direction is longer than the length in the X-axis direction.

[0014] The plate-like member 2 also has a pair of bottom-side folded portions 5. As shown in Figures 2 and 4, each of the pair of bottom-side folded portions 5 is foldably connected to each of a pair of first end portions 6 (in this embodiment, a pair of end portions located on the X-axis side of the bottom plate portion 4) facing each other in the bottom plate portion 4, and is folded back to the back surface side of the bottom plate portion 4 from the first end portions 6 as a starting point.

[0015] The bottom folded portion 5 includes a first bottom portion 7, a second bottom portion 8, and a third bottom portion 9, as shown in FIGS.

[0016] As shown in Figures 2 and 4, the bottom side first portion 7 is foldably connected to the bottom plate portion 4 at a first end portion 6. The bottom side second portion 8 is foldably connected to the bottom side first portion 7 at an end portion 10 of the bottom side first portion 7 (the end portion opposite to the first end portion 6). The bottom side third portion 9 is foldably connected to the bottom side second portion 8 at an end portion 11 of the bottom side second portion 8 (the end portion opposite to the end portion 10). The lengths of the bottom side first portion 7 and the bottom side second portion 8 in the X-axis direction are approximately the same, and the length of the bottom side third portion 9 in the X-axis direction is longer than the bottom side first portion 7, etc.

[0017] The plate-like member 2 also has a pair of erected portions 12. As shown in Fig. 1 and Fig. 4, each erected portion 12 is foldably connected to a pair of opposing second end portions 13 of the bottom plate portion 4 (in this embodiment, a pair of end portions located on the Y-axis side of the bottom plate portion 4), and erects from the bottom plate portion 4 with the second end portions 13 as starting points (standing up in the Z-axis direction).

[0018] Each of the pair of standing portions 12 has a side plate portion 14. The side plate portion 14 has a rectangular shape, and is bent at the second end portion 13 described above so as to stand from the bottom plate portion 4.

[0019] Each of the pair of standing portions 12 includes a pair of outer folded portions 15. As shown in Fig. 3 and Fig. 4, the outer folded portions 15 are foldably connected to a pair of third end portions 16 (end portions different from the above-mentioned second end portions 13, and in this embodiment, a pair of end portions located on the X-axis side of the side plate portion 14) of the side plate portion 14, and are folded back from the third end portions 16 as a starting point to the outer surface side of the side plate portion 14 (the outer side in the X-axis direction of the side plate portion 14 when the side plate portion 14 is erected from the bottom plate portion 4).

[0020] As shown in FIGS. 3 and 4, the pair of outer folded portions 15 includes a first outer portion 17, a second outer portion 18, and a third outer portion 19.

[0021] As shown in Figures 3 and 4, the first outer portion 17 is connected to the side plate portion 14 at a third end 16 in a manner that allows it to be folded. The second outer portion 18 is connected to the first outer portion 17 at an end 20 of the first outer portion 17 (the end on the opposite side to the third end 16) in a manner that allows it to be folded. The third outer portion 19 is connected to the second outer portion 18 at an end 21 of the second outer portion 18 (the end on the opposite side to the end 20 of the first outer portion 17) in a manner that allows it to be folded. The first outer portion 17 and the second outer portion 18 have approximately the same length in the X-axis direction, and the third outer portion 19 has a longer length in the X-axis direction than the first outer portion 17, etc.

[0022] 4, the first end 6 and the third end 16 are located at approximately the same position in the X-axis direction and are aligned in a straight line. The end 10 of the bottom first portion 7 and the end 20 of the outer first portion 17 are located at approximately the same position in the X-axis direction and are aligned in a straight line. The end 11 of the bottom second portion 8 and the end 21 of the outer second portion 18 are located at approximately the same position in the X-axis direction and are aligned in a straight line.

[0023] Furthermore, the plate-like member 2 has four openings 22 and connecting portions 23 provided between the pair of bottom folded portions 5 and the pair of standing portions 12, as shown in FIG.

[0024] In this embodiment, the opening 22 has a shape like "Σ" when the side along the X-axis is the up-down direction in a plan view when the plate-like member 2 is unfolded as shown in FIG. 4. The opening 22 may have other shapes (for example, a circular shape or a rectangular shape in a plan view). The opening 22 is located near the intersection of the first end 6, the second end 13, and the third end 16 as shown in FIG. 4. The opening 22 separates the first end 6 and the third end 16, which are arranged in a straight line, separates the end 10 of the bottom side first portion 7 and the end 20 of the outer first portion 17, which are arranged in a straight line, and further separates the end 11 of the bottom side second portion 8 and the end 21 of the outer second portion 18, which are arranged in a straight line.

[0025] The connecting portion 23 foldably connects the adjacent bottom third portion 9 and outer third portion 19. The connecting portion 23 in this embodiment connects the bottom third portion 9 and the outer third portion 19 via two folding lines 24.

[0026] Next, the film sheet 3 will be described. The film sheet 3 has elasticity and is formed of a resin material such as highly elastic urethane. As shown in FIG. 4, the length of the film sheet 3 in the X-axis direction is approximately the same as the length of the plate-like member 2 in the X-axis direction, and the length of the film sheet 3 in the Y-axis direction is approximately the same as the length of the bottom plate portion 4 in the Y-axis direction. The film sheet 3 is provided on the plate-like member 2 so as to cover the surface of the bottom plate portion 4. In this embodiment, one end portion 25 located in the X-axis direction of the film sheet 3 is connected by adhesion or the like near the outer edge of one of the bottom side third parts 9 when the plate-like member 2 is in an unfolded state, and the other end portion 26 opposite the one end portion 25 is connected to the other end portion 26 by adhesion or the like. The film sheet 3 is connected by adhesion or the like near the outer edge of the bottom third portion 9. The film sheet 3 is not connected to the plate-like member 2 by adhesion or the like in areas other than one end portion 25 and the other end portion 26.

[0027] The cushioning material 1 including the plate-like member 2 and the film sheet 3 can be handled like a single piece of cardboard when the plate-like member 2 is unfolded. In other words, when the cushioning material 1 is stored in a warehouse or the like before use, it does not take up much space, and therefore the space required for storage in the warehouse or the like can be reduced.

[0028] When packaging an item C with the cushioning packaging material 1, the plate-shaped member 2 in the unfolded state shown in Fig. 4 is folded as shown in Fig. 1. Specifically, the plate-shaped member 2 is folded in the following procedure. Note that the following procedure is an example and can be modified as appropriate.

[0029] First, as shown in FIG. 2, the bottom first portion 7 is folded at the first end 6 toward the inside of the width direction of the bottom plate portion 4 so as to overlap the bottom plate portion 4. Then, the bottom second portion 8 is folded at the end 10 of the bottom first portion 7 toward the outside of the width direction of the bottom plate portion 4 so as to overlap the bottom first portion 7. Furthermore, the bottom third portion 9 is folded at the end 11 of the bottom second portion 8 toward the inside of the width direction of the bottom plate portion 4 so as to overlap the bottom second portion 8. That is, the bottom first portion 7, the bottom second portion 8, and the bottom third portion 9 are folded in an accordion-like shape on the back side of the bottom plate portion 4. Note that in FIG. 2, the bottom plate portion 4, the bottom first portion 7, the bottom second portion 8, and the bottom third portion 9 are illustrated as being almost in close contact with each other, but in reality, they are not completely folded at the first end 6 etc. due to the stiffness of the plate-like member 2, and there is a gap between them.

[0030] Next, the packaged object C is inserted between the bottom plate portion 4 and the film sheet 3, and sandwiched between the bottom plate portion 4 and the film sheet 3. In the present embodiment, only one end 25 and the other end 26 of the film sheet 3 are fixed to the plate-like member 2 by adhesion or the like, and the other portions are not connected to the plate-like member 2, so that the packaged object C can be inserted into the bottom plate portion 4 and the film sheet 3 from, for example, the vicinity of the second end 13. In addition, as shown in FIG. 2, when the bottom first portion 7 and the like are bent in an accordion-like shape, the length from one end 25 to the other end 26 of the film sheet 3 is shorter than that in the state in which the plate-like member 2 is unfolded, so that the film sheet 3 can be made loose. Therefore, even a packaged object C having a large thickness can be inserted between the bottom plate portion 4 and the film sheet 3 without difficulty.

[0031] Thereafter, as shown in FIG. 1, the side plate portion 14 is bent at the second end portion 13 so as to stand upright from the bottom plate portion 4. When bent in this manner, the first outer portion 17 is bent at the third end portion 16 toward the inside of the width direction of the side plate portion 14 and overlaps with the side plate portion 14, as shown in FIG. 3. The second outer portion 18 is bent at the end portion 20 of the first outer portion 17 toward the outside of the width direction of the side plate portion 14 and overlaps with the first outer portion 17. The third outer portion 19 is bent at the end portion 21 of the second outer portion 18 toward the inside of the width direction of the side plate portion 14 and overlaps with the second outer portion 18. That is, the first outer portion 17, the second outer portion 18, and the third outer portion 19 are bent in an accordion-like shape on the outside of the side plate portion 14.

[0032] In addition, the plate-like member 2 of this embodiment has an opening 22 as shown in Fig. 4, and the first end 6 and the third end 16 arranged in a straight line are separated, the end 10 of the bottom side first portion 7 and the end 20 of the outer first portion 17 arranged in a straight line are separated, and the end 11 of the bottom side second portion 8 and the end 21 of the outer second portion 18 arranged in a straight line are separated. That is, if these linearly arranged parts are connected without providing the opening 22, when folding the side plate part 14, the above-mentioned connected parts may wrinkle or excessive force may be required when folding, which may impair workability. However, the opening 22 prevents such wrinkles from occurring and makes the folding work easy. In addition, the connection part 23 connecting the bottom side third portion 9 and the outer third portion 19 shown in Fig. 4 becomes the outer corner part on the bottom side of the outer third portion 19 as shown in Fig. 1 when folded as described above, so if there is only one folding part, excessive force will be required when folding. On the other hand, the connection portion 23 in this embodiment connects the bottom third portion 9 and the outer third portion 19 via two folding lines 24, and therefore can be easily folded without requiring a large force. Note that, although the side plate portion 14, the outer first portion 17, the outer second portion 18, and the outer third portion 19 are illustrated in Fig. 3 as being substantially in close contact with each other, in reality, due to the stiffness of the plate-like member 2, they are not completely folded at the third end portion 16, etc., and there are gaps between them.

[0033] 5, the cushioning material 1 is placed inside the box P, and the flaps F are folded toward the inside of the box P. The closed flaps F are then attached together using a tape or the like (not shown), thereby packaging the cushioning material 1 in the box P.

[0034] Here, the effect of the packaging cushioning material 1 will be described. When the packaging cushioning material 1 is folded as shown in Figs. 1 and 5, the bottom first portion 7, bottom second portion 8, and bottom third portion 9 are folded in an accordion-like shape on the back side of the bottom plate portion 4, as described above, and the outer first portion 17, outer second portion 18, and outer third portion 19 are folded in an accordion-like shape on the outside of the side plate portion 14. That is, even if an impact is applied to the bottom of the box P when the box P packed with the packaging cushioning material 1 is transported, the bottom first portion 7 and the like can absorb the impact. Also, even if an impact is applied to the side portion of the box P in the Y-axis direction during transportation, the outer first portion 17 and the like can absorb the impact. Therefore, there is no need to use a different cushioning material or the like to be placed between the box P and the packaging cushioning material 1, and costs can be reduced. In addition, in this embodiment, the length in the X-axis direction of the bottom third portion 9 is longer than the first bottom portion 7 and the second bottom portion 8, thereby increasing the area of ​​the bottom third portion 9, so that the cushioning material for packaging 1 contained in the box P can be stably supported from below by the bottom third portion 9. Similarly, in this embodiment, the length in the X-axis direction of the outer third portion 19 is longer than the first outer portion 17 and the second outer portion 18, thereby increasing the area of ​​the outer third portion 19, so that the cushioning material for packaging 1 contained in the box P can be stably supported from the side by the outer third portion 19.

[0035] In addition, in the cushioning material for packaging 1, the first outer portion 17, the second outer portion 18, and the third outer portion 19 are folded in an accordion-like shape on the outside of the side plate portion 14, thereby increasing the thickness of the outer folded portion 15, and therefore the flap F is prevented from falling into the inside of the box P by the thicker outer folded portion 15, as shown in Fig. 6. That is, if the flap F falls significantly into the inside of the box P, the tip of the flap F may come into contact with the packaged item C, causing damage to the packaged item C, but in this embodiment, such a problem can be prevented by the first outer portion 17, etc.

[0036] Although the embodiment and modified examples of the present invention have been described above, the present invention is not limited to the specific embodiment, etc., and various modifications and changes are possible within the scope of the spirit of the present invention described in the scope of the utility model registration claims. Furthermore, the effects of the above-mentioned embodiment are merely examples of the effects resulting from the present invention. In other words, the present invention may have further additional effects. [Explanation of symbols]

[0037] 1: Packing cushioning material 2: Plate-shaped member 3: Film sheet 4: Bottom plate part 5: Bottom fold 6:First end 7: Bottom first part 8: Bottom second part 9: Bottom third part 10: End of the first bottom part 11: End of the second bottom part 12: Standing section 13:Second end 14: Side plate part 15: Outer folded part 16:Third end 17:Outer first part 18:Outer second part 19:Outer third part 20: End of outer first part 21: End of second outer part 22: Opening 23: Connection 25: One end of the film sheet 26: Other end of film sheet C: Item to be packaged

Claims

1. a plate-like member having a rectangular bottom plate portion on which an item to be packed is placed, and a pair of bottom side folded portions which are foldably connected to a pair of first end portions facing each other in the bottom plate portion and folded back to a back surface side of the bottom plate portion; a film sheet provided covering a surface of the bottom plate portion from one of the bottom folded portions to the other of the bottom folded portions; The pair of bottom side fold portions have a bottom side first portion folded at the first end toward the inside in the width direction of the bottom plate portion and overlapping the bottom plate portion, a bottom side second portion folded at the end of the bottom side first portion toward the outside in the width direction of the bottom plate portion and overlapping the bottom side first portion, and a bottom side third portion folded at the end of the bottom side second portion toward the inside in the width direction of the bottom plate portion and overlapping the bottom side second portion, said packaging cushioning material.

2. One end of the film sheet is connected to the bottom third portion of one of the bottom folded portions; The cushioning material for packaging according to claim 1 , wherein the other end of the film sheet is connected to the bottom third portion of the other bottom folded portion.

3. the plate-like member includes a pair of standing portions that are foldably connected to a pair of second end portions facing each other in the bottom plate portion and standing from the bottom plate portion, The pair of erecting portions include a rectangular side plate portion bent at the second end portion so as to erect from the bottom plate portion, and a pair of outer folded portions foldably connected to a pair of third end portions of the side plate portion and folded back to the outer surface side of the side plate portion, The pair of outer folded portions have an outer first portion folded at the third end toward the inside in the width direction of the side plate portion and overlapping with the side plate portion, an outer second portion folded at the end of the outer first portion toward the outside in the width direction of the side plate portion and overlapping with the outer first portion, and an outer third portion folded at the end of the outer second portion toward the inside in the width direction of the side plate portion and overlapping with the outer second portion.

4. the plate-like member has four openings provided between a pair of the bottom-side folded portions and a pair of the upright portions, and a connecting portion that connects the adjacent bottom-side third portion and the outer third portion in a foldable manner; The cushioning material for packaging described in claim 3, wherein the four openings are located near the intersection of the first end, the second end, and the third end when the plate-shaped member is unfolded, separating the first end and the third end, separating the end of the bottom first portion and the end of the outer first portion, and separating the end of the bottom second portion and the end of the outer second portion.

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