Packaging cushioning material

Abstract

To provide a cushioning material for packaging capable of imparting a high pressure resistance strength in a vertical direction even when using an inexpensive and relatively low-strength material that reduces a material cost accordingly.SOLUTION: A cushioning material for packaging 1 includes a bottom plate portion 2 on which an article G is placed, a plurality of fold-back piece portions 3 provided around the bottom plate portion 2, and folded back toward the article G that is disposed on the bottom plate portion 2 to hold a tip thereof with a joint material 6, and a plurality of pressure-resistant wall portions 4 provided between the fold-back piece portions 3 and 3 around the bottom plate portion 2, and pushed by inner surfaces 13a and 14a of a box 10 to rise so as to support an upper and a lower inner side surfaces 17 and 18 of the box 10, when the article G is stored in the box 10 in a state where the article G is held by the fold-back piece portions 3 and the joint material 6.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a cushioning material for packaging, which is placed in a box together with an article when the article is packed in the box to protect the article from impact. [Background technology]

[0002] BACKGROUND ART Conventionally, when various shaped articles such as disc-shaped ceiling lights are packed in a box, many cushioning materials for packaging have been proposed and put into practice to be stored in the box together with the articles to protect the articles from impact.

[0003] For example, Patent Document 1 discloses a cushioning material for packaging in which standing pieces are provided at four diagonal positions on the flat surface of a cardboard member so as to be freely bent upward, and each standing piece is integrally formed with a bending section formed by cutting downward at a predetermined depth on the inside of the upper end of each standing piece so as to be freely bent inward toward the flat surface of the cardboard member, and vertical support sections are provided on both sides of the bending section of each standing piece, and the bent bending section is placed against the upper outer periphery of the main body of a lighting fixture placed on the flat surface of the cardboard member, and the bent bending section is joined to the main body of the lighting fixture or packaging material that stores the main body of the lighting fixture with a joining material.

[0004] This cushioning material is excellent for protecting lighting fixtures, such as disc-shaped ceiling lights, from impact. However, because the upright pieces have bent portions at their upper ends, the contact area between the top of the upright pieces and the top inner surface of the box is small when the item is placed inside the box. Therefore, in order to ensure high vertical pressure resistance so that the upright pieces do not buckle even when a large impact or load is applied to the box in the vertical direction, relatively expensive, high-strength corrugated cardboard components must be used, which increases material costs. This material cost is particularly significant when the item being packaged is a large number of items, such as ceiling lights. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5757447 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention was devised in consideration of the above-mentioned problems, and its object is to provide a cushioning material for packaging that can have high pressure resistance in the vertical direction even when made from inexpensive, relatively low-strength materials, and that can be implemented while keeping material costs low. [Means for solving the problem]

[0007] The cushioning material for packaging according to the first invention is a cushioning material for packaging an article in a box to protect the article from impact when the article is packed in the box, the cushioning material comprising a bottom plate portion on which the article is placed, and a plurality of cushioning members provided around the bottom plate portion, the cushioning members being arranged on the bottom plate portion. The bottom plate portion is bent from a position inside the outer periphery of the bottom plate portion in a direction approaching the article, and the part separated from the bottom plate portion is bent to and a plurality of pressure-resistant wall portions provided around the bottom plate portion between the folded pieces, which are pressed against the inner surface of the box and rise up to support the upper and lower inner surfaces of the box when an item is stored in the box while being held by the folded pieces and the bonding material.

[0008] The cushioning material for packaging according to the second invention is characterized in that, in the first invention, when an article is stored in the box while being held by the folded piece portion and the joining material, the pressure-resistant wall portion is pressed against the inner surface of the box and rises up at approximately right angles to the inner top and bottom surfaces of the box.

[0009] The cushioning material for packaging according to the third invention is characterized in that, in the first or second invention, it further comprises a bottom plate extension portion extending from the bottom plate portion to the outside of the bottom plate portion around the periphery of the bottom plate portion, between the folded piece portions.

[0010] The cushioning material for packaging according to the fourth invention is any of the first to third inventions, characterized in that a pair of folded portions are provided at a distance from each other in a direction approximately perpendicular to the folding direction of the folded piece portion, midway in the folding direction of the folded piece portion, and when the item is stored in the box, the outside of the space between the pair of folded portions is in contact with or close to the inner surface of the box, and the inside of the space between the pair of folded portions covers the side of the item.

[0011] The cushioning material for packaging according to a fifth aspect of the present invention is the cushioning material for packaging according to the fourth aspect, characterized in that the folded portion is a low-strength portion having a lower strength than a general portion of the folded-back piece portion.

[0012] The cushioning material for packaging according to the sixth invention is First invention Fifth Invention Either In a pair of bent portions are provided at an intermediate portion in the folding direction of the folded piece portion, with a gap therebetween in a direction substantially perpendicular to the folding direction of the folded piece portion; The folded piece portion adjacent to the pressure-resistant wall portion is characterized in that a protruding piece is provided on the side of the pair of folded portions, which comes into contact with or is close to the inner surface of the box and one side of the pressure-resistant wall portion when stored in the box.

[0013] The cushioning material for packaging according to the seventh invention is First invention Sixth Invention Either In a pair of bent portions are provided at an intermediate portion in the folding direction of the folded piece portion, with a gap therebetween in a direction substantially perpendicular to the folding direction of the folded piece portion; The pressure-resistant wall portion adjacent to the folded piece portion has an overlapping piece on its other side, and when stored in the box, the overlapping piece is pressed against the inner surface of the box, overlapping along the outside of the gap between the pair of folded portions, and coming into contact with or close to the inner surface of the box and the other side of the pressure-resistant wall portion.

[0014] The cushioning material for packaging according to an eighth aspect of the present invention is any one of the first to seventh aspects of the present invention, characterized in that it is made of one sheet of corrugated cardboard member. [Effects of the Invention]

[0015] According to the cushioning material for packaging of the first invention, when an item is stored in a box while being held by the folded-over piece portion and the bonding material, the long, continuous, large-area upper surface of the pressure-resistant wall portion comes into contact with or is close to the inside upper surface of the box. Therefore, even if an inexpensive, relatively low-strength material is used, it is possible to provide high pressure resistance in the vertical direction, and as a result, material costs can be kept low.

[0016] According to the packaging cushioning material of the second invention, when an item is stored in a box while being held by the folded-over piece portion and the bonding material, the pressure-resistant wall portion is pressed against the inner surface of the box and rises up at approximately right angles to the inner top and bottom surfaces of the box.Therefore, the entire pressure-resistant wall portion acts as a support wall, and even if a cheaper, relatively low-strength material is used, it is possible to provide greater pressure resistance in the vertical direction, and as a result, it is possible to implement the material cost at a lower cost.

[0017] According to the packaging cushioning material of the third invention, a bottom plate extension portion is further provided around the bottom plate portion between the folded piece portions, extending from the bottom plate portion to the outside of the bottom plate portion, and is in contact with or close to the inner underside of the box over a larger area.Therefore, even if a cheaper, relatively low-strength material is used, it can have even greater vertical pressure resistance, and as a result, it can be implemented at even lower material costs.

[0018] According to the packaging cushioning material of the fourth invention, when stored in a box, the outer side of the gap between the pair of folded sections comes into contact with or is close to the inner surface of the box, and the inner side of the gap between the pair of folded sections covers the side of the item, thereby further enhancing the cushioning effect in the lateral swaying direction.

[0019] According to the cushioning material for packaging according to the fifth aspect of the present invention, the folding portion is a low-strength portion that is weaker than the general portion of the folded-back piece, and therefore the folding portion can be easily folded.

[0020] According to the packaging cushioning material of the sixth invention, the folded piece portion adjacent to the pressure-resistant wall portion is provided with protruding pieces on the sides of a pair of folding portions that come into contact with or are close to the inner surface of the box and one side of the pressure-resistant wall portion when stored in a box, thereby further enhancing the cushioning effect in the lateral swaying direction.

[0021] According to the packaging cushioning material of the seventh invention, the pressure-resistant wall portion adjacent to the folded piece portion has an overlapping piece on the other side thereof, and when stored inside the box, the overlapping piece is pressed against the inside surface of the box, overlapping along the outside of the gap between the pair of folded portions, and coming into contact with or close to the inside surface of the box and the other side of the pressure-resistant wall portion.This overlapping piece therefore makes it possible to more reliably maintain the pressure-resistant wall portion at an approximately right angle to the inside top and bottom surfaces of the box inside the box.

[0022] According to the packaging cushioning material of the eighth invention, since it is made up of a single piece of cardboard material, the three-dimensional cardboard material uses less material, so even if cheaper and relatively low-strength paper material is used, it can still have a high overall strength. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a plan view showing an unfolded state of a cushioning material for packaging according to an embodiment of the present invention. [Figure 2] FIG. 2 is a plan view showing the unfolded state of the box used in the embodiment of the present invention. [Figure 3] FIG. 3 is a perspective view showing a state in which the cushioning material according to the embodiment of the present invention has been set on an article and has not yet been housed in a box. [Figure 4] FIG. 4 is a perspective view showing a state in which the cushioning material according to the embodiment of the present invention is set on an article and stored in a box. [Figure 5] FIG. 5 is a partial enlarged view showing a portion A in FIG. [Figure 6] FIG. 6 is a partial enlarged view showing a portion B in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0024] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

[0025] [Embodiment] Fig. 1 is a plan view showing an unfolded state of a cushioning packaging material 1 according to an embodiment of the present invention, and Fig. 2 is a plan view showing an unfolded state of a box 10 used in the embodiment of the present invention. Fig. 3 is a perspective view showing a state in which the cushioning packaging material 1 according to the embodiment of the present invention has been set on an item G and before being stored in the box 10, and Fig. 4 is a perspective view showing a state in which the cushioning packaging material 1 according to the embodiment of the present invention has been set on an item G and stored in the box. Fig. 5 is a partial enlarged view showing an enlarged view of part A in Fig. 4, and Fig. 6 is a partial enlarged view showing an enlarged view of part B in Fig. 4.

[0026] As shown in Figure 1, the cushioning material 1 is made of a single sheet of corrugated cardboard with a three-dimensional structure that contains a truss-shaped core 1a. Score lines 1b define a central bottom plate 2, folded pieces 3 provided on all four sides of the bottom plate 2, pressure-resistant walls 4 provided between the upper and lower folded pieces 3, 3 of the bottom plate 2, and bottom plate extensions 5 extended between the left and right folded pieces 3, 3 of the bottom plate 2. The cushioning material 1 may also be made of other materials, such as cardboard.

[0027] The bottom plate portion 2 has a substantially regular octagonal shape, and an item G (here, a disk-shaped ceiling light as an example) shown by a two-dot chain line is placed on top of it.

[0028] 3 and 4, the folded piece portion 3 is spatula-shaped and is folded back toward the item G placed on the bottom plate portion 2, and its tip is held by a bonding material 6 made of adhesive tape such as cellophane tape. Note that the item G does not necessarily have to be held directly by the bonding material 6, and may be held by being wrapped in a bag-shaped packaging material or the like to make it easier to take out.

[0029] Furthermore, the folded piece 3 has a folding section 32 consisting of a half-cut perforation at the boundary with the bottom plate 2, making it easy to fold toward the center of the bottom plate 2. The folding section 32 may be formed by simply providing a perforation or a ruled line, or may be formed without providing any line.

[0030] Further, a pair of bent portions 31 are provided at a distance from each other in a direction substantially perpendicular to the folding direction of the folded piece 3, at the middle of the folding direction of the folded piece 3. As shown in FIG. 4 , when the container is stored in the box 10, the outer sides of the spaced portions 31a between the pair of bent portions 31 are supported by both sides of the inner surfaces 13a, 14a of the box 10 and the protruding pieces 33 (described later) and the pressure-resistant wall 4, and are adjacent to the inner surfaces 13a, 14a of the box 10 with a space of, for example, about 15 mm between them, forming a buffer space between the inner surfaces 13a, 14a. Furthermore, the inner sides of the spaced portions 31a between the pair of bent portions 31 are configured to cover the sides of the item G. The outer sides of the spaced portions 31a between the pair of bent portions 31 may be in contact with the inner surfaces 13a, 14a of the box 10. Note that "approximately orthogonal" means being as orthogonal as technically possible, and includes an error.

[0031] Here, the pair of folding portions 31, 31 are formed by half-cut perforations, which are low-strength portions that are weaker than the general portion of the folded piece portion 3. Note that the pair of folding portions 31, 31 may be formed by simply providing perforations or lines, or may be formed without providing any lines.

[0032] Furthermore, the upper right and lower left folded pieces 3 adjacent to the pressure-resistant wall portion 4 have protruding pieces 33 formed on the sides of a pair of folding portions 31 by cut lines 1c, which come into contact with or are close to the inner surface 14a of the box 10 and one side of the pressure-resistant wall portion 4 when stored inside the box 10, as shown in Figures 4 and 5.

[0033] The pressure-resistant wall 4 is spatula-shaped and has a long, continuous, large-area flat upper surface 4a, as shown in FIG. 4 . When an article G is stored in the box 10 while being held by the folded-back pieces 3 and the bonding material 6, the pressure-resistant wall 4 is pressed against the inner surfaces 13a and 14a of the box 10, rising approximately perpendicular to the inner upper and lower surfaces 17 and 18 of the box 10 so as to support the space between the inner upper and lower surfaces 17 and 18. Note that "approximately perpendicular" means that the angle is as close to perpendicular as technically possible, and may include tolerances. Furthermore, the pressure-resistant wall 4 does not have to be approximately perpendicular to the inner upper and lower surfaces 17 and 18 as long as it supports the space between the inner upper and lower surfaces 17 and 18 of the box 10.

[0034] The pressure-resistant wall 4 has a folding section 41 formed by a half-cut perforation at the boundary with the bottom plate 2, making it easy to fold toward the center of the bottom plate 2. The folding section 41 may be formed by simply providing a perforation or a ruled line, or may be formed without providing any line.

[0035] As shown in Figures 4 and 6, the pressure-resistant wall portion 4 has an outer arc-shaped overlapping piece 43 on the other side thereof, and when the pressure-resistant wall portion 4 is stored in the box 10, the overlapping piece 43 is pressed against the inner surface 13 of the box 10 and overlaps along the outside of the gap portion 31a between the pair of bent portions 31, 31, so that the inner surface 13a of the box 10 and the other side of the pressure-resistant wall portion 4 come into contact with or are close to each other.

[0036] Furthermore, a folding portion 42 consisting of a perforation is provided at the base of the overlapping piece 43, making it easy to fold toward the outside of the space 31a between the pair of folding portions 31. The folding portion 42 may be formed by only providing a half-cut perforation or a ruled line, or may be implemented without providing any.

[0037] The bottom plate extension portion 5 is spatula-shaped, and when stored in the box 10, its lower surface, together with the bottom plate portion 2, comes into contact with the inner lower surface 18 of the box 10 as shown in FIG.

[0038] The numbers and shapes of the bottom plate portion 2, folded piece portion 3, pressure-resistant wall portion 4, and bottom plate extension portion 5 are not limited to those described above, and may be variously implemented.

[0039] On the other hand, the box 10 that stores the item G covered with the packaging cushioning material 1 is made up of a single piece of cardboard material that has a three-dimensional structure with a truss-shaped core built in, just like the packaging cushioning material 1, as shown in Figure 2.

[0040] Box 10 is assembled into a box shape as shown in Figure 4 by folding multiple peripheral assembly surface portions 13-16 at folding portions 11 consisting of ruled lines and bonding corresponding portions together by gluing or the like. Reference numeral 12 denotes a cut line between assembly surface portions 14 and 15. The internal space of box 10 is approximately the same width and height as the item G covered with cushioning packaging material 1, so that the item G covered with cushioning packaging material 1 does not rattle inside box 10.

[0041] However, before storing an article G covered with the cushioning packaging material 1, one of the assembly surfaces 14, 15 is left open and not bonded to form an insertion opening E, as shown in FIG.

[0042] Then, the article G covered with the cushioning material 1 is stored in the direction of arrow D1, and the remaining assembly surface portions 14, 15 are adhered to close the insertion opening E, completing the packaging of the article G as shown in FIG.

[0043] The internal space S1 of the box 10 outside the pressure-resistant wall portion 4 enhances the buffering effect particularly in the lateral vibration direction.

[0044] According to the cushioning material 1 of the embodiment of the present invention described above, when an article G is stored in a box 10 while being held by the folded pieces 3 and the bonding material 6, as shown in Fig. 4, the long, continuous, large-area upper surface 4a of the pressure-resistant wall 4 comes into contact with or close to the inner upper surface 17 of the box 10. This increases the support force between the inner upper and lower surfaces 17, 18 of the box 10 provided by the pressure-resistant wall 4, so that even if an inexpensive, relatively low-strength material is used, it is possible to provide a large pressure-resistant strength in the vertical direction, and therefore material costs can be kept low.

[0045] 4, when the item G is stored in the box 10 while being held by the folded-back pieces 3 and the joining material 6, the pressure-resistant wall 4 is pressed against the inner surfaces 13a, 14a of the box 10 and rises at a substantially right angle to the inner top and bottom surfaces 17, 18 of the box 10. Therefore, the entire pressure-resistant wall 4 functions as a support wall, and even if a cheaper, relatively low-strength material is used, it is possible to provide greater pressure resistance in the vertical direction, thereby enabling the material cost to be reduced.

[0046] 1 and 4, this cushioning material for packaging 1 further includes a bottom plate extension 5 extending from the bottom plate 2 to the outside of the bottom plate 2 between the folded-back pieces 3, 3 around the periphery of the bottom plate 2, and is in contact with or close to the inside lower surface 18 of the box 10 over a larger area. Therefore, the bottom plate 2 and the bottom plate extension 5 function as a support floor within the box 10, so that even if a cheaper, relatively low-strength material is used, it is possible to provide even greater pressure resistance in the vertical direction, and accordingly, it is possible to further reduce material costs.

[0047] Furthermore, as described above, this packaging cushioning material 1 can increase pressure resistance, and a demonstration test was conducted to confirm that it is unlikely to be crushed even when stacked high during transportation or conveyance in a vehicle, etc.

[0048] 4, when the cushioning packaging material 1 is stored in the box 10, the outside of the gap 31a between the pair of bent portions 31, 31 comes close to the inner side surfaces 13a, 14a of the box 10, forming a buffer space on the outside, and the inside of the gap 31a between the pair of bent portions 31, 31 covers the side of the article G. Therefore, the buffer space on the outside of the gap 31a between the pair of bent portions 31, 31 can further enhance the buffer effect in the lateral shaking direction.

[0049] Furthermore, according to this packaging cushioning material 1, as shown in Figure 1, the pair of folding portions 31, 31 are low-strength portions consisting of half-cut perforations that are weaker than the general portion of the folded-back piece portion 3, so that these pair of folding portions 31, 31 can be easily folded.

[0050] 4 and 5, in this cushioning packaging material 1, the folded piece 3 adjacent to the pressure-resistant wall 4 is provided on the side of the pair of bent portions 31, 31 with a protruding piece 33 that comes into contact with or is close to the inner surface 14a of the box 10 and one side of the pressure-resistant wall 4 when the cushioning material is stored in the box 10. Therefore, the protruding piece 33 also supports the inner surface 14a of the box 10, further enhancing the cushioning effect in the lateral shaking direction.

[0051] 4 and 6, according to this cushioning material 1, the pressure-resistant wall portion 4 adjacent to the folded piece portion 3 has an overlapping piece 43 on the other side thereof, and when the cushioning material 1 is stored in the box 10, the overlapping piece 43 is pressed against the inner surface 13a of the box 10, overlaps along the outside of the space 31a between the pair of folded portions 31, 31, and comes into contact with or close to both the inner surface 13a of the box 10 and the other side of the pressure-resistant wall portion 4. Therefore, when the other side of the pressure-resistant wall portion 4 is pressed by the inner surface 13a of the box 10, the overlapping piece 43 overlaps along the outside of the space 31a between the pair of folded portions 31, 31 to provide support, and this overlapping piece 43 more reliably maintains the pressure-resistant wall portion 4 in a position approximately perpendicular to the inner top and bottom surfaces 17, 18 of the box 10 within the box 10.

[0052] Furthermore, as shown in FIG. 1, this cushioning packaging material 1 is made up of a single piece of cardboard, and therefore the three-dimensional cardboard structure requires less material, making it possible to achieve a high overall strength even when using cheaper, relatively low-strength paper material.

[0053] Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the inventions and their equivalents as defined in the claims. [Explanation of symbols]

[0054] 1 Packaging cushioning material 2 Bottom plate part 3 Folded piece part 31 Bend section 31a Interval of bent part 33 Projecting piece 4 Pressure-resistant wall 43 Duplicate piece 5 Bottom plate extension 6 Bonding material 10 boxes 13a Inside of the box 14a Inside of the box 17 Inside top of box 18 Inside bottom of box G Goods

Claims

1. A packaging cushioning material that is stored in a box together with an item to protect the item from impact when the item is packed in a box, a base plate portion on which an article is placed; a plurality of folded pieces provided around the periphery of the bottom plate portion, the folded pieces being bent from a position on the bottom plate portion that is inside the outer periphery of the bottom plate portion in a direction approaching an article disposed on the bottom plate portion, and folded back toward the article at a portion separated from the bottom plate portion, the folded pieces having their tips held by a bonding material; a plurality of pressure-resistant walls provided between the folded pieces around the bottom plate, which are pressed against the inner surface of the box when an article is stored in the box while being held by the folded pieces and the joining material, and which rise up to support the upper and lower inner surfaces of the box. A packaging cushioning material characterized by the above.

2. When an article is stored in the box while being held by the folded piece portion and the joining material, the pressure-resistant wall portion is pressed against the inner surface of the box and rises at a substantially right angle to the inner top and bottom surfaces of the box. The cushioning material for packaging according to claim 1, characterized in that

3. The base plate further includes a bottom plate extension portion extending from the bottom plate portion to the outside of the bottom plate portion between the folded-back pieces around the base plate portion.

3. The cushioning material for packaging according to claim 1 or 2, characterized in that:

4. A pair of bent portions is provided at an interval in the middle of the folding direction of the folded piece portion in a direction substantially perpendicular to the folding direction of the folded piece portion, and when the item is stored in the box, the outside of the space between the pair of bent portions is in contact with or close to the inner surface of the box, and the inside of the space between the pair of bent portions is configured to cover the side of the item. The cushioning material for packaging according to any one of claims 1 to 3, characterized in that:

5. The bent portion is a low-strength portion having a lower strength than the general portion of the folded piece portion. The cushioning material for packaging according to claim 4, characterized in that

6. A pair of folding portions are provided at an intermediate position in the folding direction of the folding piece portion, spaced apart in a direction substantially perpendicular to the folding direction of the folding piece portion; The folded piece portion adjacent to the pressure-resistant wall portion is provided with a protruding piece on each side of the pair of bent portions, which protrudes into contact with or comes close to the inner surface of the box and one side of the pressure-resistant wall portion when the box is stored in the box. The cushioning material for packaging according to any one of claims 1 to 5, characterized in that

7. A pair of folding portions are provided at an intermediate position in the folding direction of the folding piece portion, spaced apart in a direction substantially perpendicular to the folding direction of the folding piece portion; The pressure-resistant wall portion adjacent to the folded piece portion has an overlapping piece provided on the other side thereof, When the box is stored, the overlapping piece is pressed against the inner surface of the box, overlaps along the outside of the gap between the pair of bent portions, and comes into contact with or close to the inner surface of the box and the other side of the pressure-resistant wall portion. The cushioning material for packaging according to any one of claims 1 to 6, characterized in that:

8. Consists of a single piece of cardboard The cushioning material for packaging according to any one of claims 1 to 7, characterized in that:

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