JP2012192963A - Cushioning material, and packing box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a size of a cushioning material and absorb energy of a wide range simultaneously.SOLUTION: The cushioning material arranged along an inner circumferential surface of the packing box includes a peak part and a valley part, which are alternately formed, and a wing part continuously formed to a connection part for connecting the peak part and the valley part on an inner side of the peak part. The wing part includes a first edge part positioned inward from a line linking the two adjacent valley parts. The first edge part forms a clearance with an inner circumferential wall of the packing box when it is arranged in the packing box. The cushioning material has a wave shape formed by continuing the peak part and the valley part. When the wave shape is elongated and contracted, an impact of small energy such as vibration is absorbed. In addition, when the wing part is plastically deformed, drop impact or the like of large energy is absorbed.

Description

  The present invention relates to a cushioning material and a packaging box that are accommodated together with articles in a packaging box.

  2. Description of the Related Art Conventionally, a packaging box is known in which cushioning members obtained by alternately folding corrugated cardboard are disposed on the bottom surface of an article in a non-adhesive manner (for example, Patent Document 1). The wavy shock absorbing member can disperse the impact force in the vertical direction by expanding and contracting when receiving an impact.

JP 2002-255157 A

  By the way, the corrugated cushioning material in which peaks and valleys are alternately arranged has an inherent spring constant as the entire cushioning material depending on the material and shape thereof. The vibration and impact energy of the article is absorbed by the spring deformation to reduce damage to the article. However, the range of energy received by the packaging box containing the articles is wide. For example, the vibration received during transportation has low energy. On the other hand, the energy in the case of a drop impact is large. For this reason, if the conventional corrugated cushioning material is responsible for a wide range of energy absorption, the following problems may occur.

  For example, when the intrinsic spring constant of the cushioning material is small, the vibration of the packaging box is insulated from the vibration during transportation, and the vibration is difficult to be transmitted to the article as the contents. For this reason, damage to the article due to long-time vibration can be reduced. However, when trying to cope with a drop impact with large energy, the amount of expansion and contraction required for energy absorption increases, and there is a problem that the cushioning material is enlarged.

  On the other hand, when the intrinsic spring constant of the cushioning material is large, the vibration of the packaging box is easily transmitted directly to the article as the contents against the vibration during transportation. For this reason, if the packaging box is exposed to vibration for a long time, the damage to the article increases. In addition, since the amount of expansion and contraction required for energy absorption is reduced, the cushioning material can be reduced in size, but the force applied to the article is increased. That is, the larger the spring constant, the larger the acceleration G value is applied to the article as the contents when the packaging box is dropped, so that the article is more damaged.

  Therefore, the cushioning material disclosed in this specification has a problem of achieving both a reduction in size and a wide range of energy absorption.

  The cushioning material disclosed in the present specification is a cushioning material arranged along the inner peripheral surface of the packaging box, and the ridges and valleys provided alternately, the ridges on the inside of the ridges, A wing-like portion provided continuously to an edge connecting the valley, and the wing-like provided with an edge located inside a line segment connecting the two adjacent valleys. It is characterized by.

  When the crest and trough are continuous, the cushioning material can be expanded and contracted, elasticity is exhibited, and minute vibrations with small energy such as vibration during transportation can be efficiently absorbed. The wing-like portion absorbs energy by plastic deformation when energy such as a drop impact is large. The wing-like portion includes an edge portion located on the inner side of a line segment connecting two adjacent valley portions. Thereby, a gap can be formed between the wing-like portion and the inner peripheral surface when the valley portion is disposed in the packing box so as to face the inner peripheral surface of the packing box. Thereby, the expansion-contraction to the direction where the peak part and trough part of a shock absorbing material continue is accept | permitted.

  As described above, the cushioning material disclosed in this specification is small in size by separating the portion that absorbs smaller energy into elastic deformation due to expansion and contraction and the portion that absorbs larger energy into plastic deformation of the wing-like portion. Therefore, a wide range of energy absorption is possible.

  According to the cushioning material disclosed in the present specification, it is possible to realize a reduction in size of the cushioning material and a wide range of energy absorption.

FIG. 1 is an explanatory diagram illustrating a state in which an article having the cushioning material of Example 1 disposed therein is accommodated in a packing box. FIG. 2 is an explanatory view for explaining a state in which another cushioning material is stored in the packing box in which the cushioning material is arranged. FIG. 3 is an enlarged perspective view showing a part of the cushioning material. FIG. 4 is an explanatory diagram schematically illustrating a state in which the cushioning material is arranged on the bottom surface that is one of the inner peripheral surfaces of the packaging box. FIG. 5 is an explanatory diagram for explaining an example of a paper pattern that is a developed view of the cushioning material. 6A and 6B are diagrams illustrating a process of forming a cushioning material by folding a pattern, FIG. 6A is a diagram illustrating a state in which the pattern is prepared, and FIG. 6B is a process of bending a protrusion. FIG. 6C is an explanatory diagram illustrating a process of completing the cushioning material. FIG. 7 is an explanatory diagram for explaining the movement of the cushioning material when vibration with low energy is applied to the packing box, and FIG. 7 (A) is an explanatory diagram for explaining a state in which no vibration is applied to the cushioning material. FIG. 7B is an explanatory diagram for explaining a state in which the cushioning material is extended. FIG. 8 is an explanatory diagram for explaining the movement of the cushioning material when an impact with large energy is applied to the packing box. FIG. 9 is an explanatory diagram for explaining a state where the corner portion of the wing-like portion is plastically deformed. FIG. 10A is an explanatory diagram for explaining a pattern paper as a development view of the cushioning material of the second embodiment, and FIG. 10B is a perspective view for explaining the cushioning material of the second embodiment. FIG. 11 is an explanatory diagram for explaining a paper pattern that is a developed view of the cushioning material according to the third embodiment. FIG. 12A is an explanatory diagram illustrating the shape of a wing-like part included in another shock-absorbing material, and FIG. 12B is an explanatory diagram illustrating the shape of a wing-like part included in another shock-absorbing material.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, in the drawings, the dimensions, ratios, and the like of each part may not be shown so as to completely match the actual ones.

  The cushioning materials 10, 20, and 30 of Example 1 will be described with reference to the drawings. FIG. 1 is an explanatory diagram showing a state in which an article 1 in which the cushioning materials 10, 20, and 30 according to the first embodiment are arranged is housed in a packing box 2. FIG. 2 is an explanatory view for explaining a state in which the cushioning material 10 is stored in the packaging box 2 in which the cushioning materials 20 and 30 are arranged. FIG. 3 is an enlarged perspective view showing a part of the cushioning material 10. FIG. 4 is an explanatory diagram schematically illustrating a state in which the cushioning material 10 is disposed on the bottom surface which is one of the inner peripheral surfaces 2 a of the packaging box 2.

  As illustrated in FIG. 1, a cushioning material 10, 20, and 30 is disposed so as to surround the six surfaces of an article 1 that is an object to be packed, and is stored in a packaging box 2. A pair of cushioning materials 10 are disposed to face each other, and a pair of cushioning materials 20 are disposed to face each other. Further, a pair of cushioning materials 30 are arranged to face each other. As illustrated in FIG. 2, the cushioning materials 10, 20, and 30 are each disposed along the inner peripheral surface 2 a of the packaging box 2. The cushioning materials 10, 20, and 30 hold the article 1 at a predetermined position in the packaging box 2 and absorb energy from various vibrations and impacts applied to the packaging box 2 from the outside. The cushioning materials 10, 20, and 30 have different dimensions depending on the shape and size of the article and the position in the packaging box 2, but include similar components. The following specific description will be made on the cushioning material 10 as a representative.

  As illustrated in FIG. 3, the cushioning material 10 includes crests 11 and troughs 12 provided alternately. By alternately providing the crests 11 and the troughs 12, two triangles 12 adjacent to each other and one crest 11 located between them form one triangle. A continuous waveform is formed. The cushioning material 10 includes a wing-like portion 14 that is continuously provided on the inner side of the peak portion 11 and the edge portion 13 that connects the peak portion 11 and the valley portion 12. The wing-like portion 14 includes a first edge portion 14a located on the inner side of a line segment L1 connecting two adjacent valley portions 12. In this specification, the direction in which the peaks 11 and the valleys 12 are continuous is defined as the X direction, and the direction orthogonal to the direction in which the peaks 11 and the valleys 12 are continuous is defined as the Y direction.

  When the cushioning material 10 is disposed in the packaging box 2, the line segment L1 connecting the two valleys 12 is located on the inner peripheral surface 2a. Since the first edge portion 14a is located on the inner side of the line segment L1, that is, on the side closer to the peak portion 11 located between the two adjacent valley portions 12, the first edge portion 14a and the inner circumference A gap S1 is formed between the surface 2a.

  The wing-like portion 14 is provided on each of the two edge portions 13 extending from the one peak portion 11. That is, two wing-like parts 14 are provided in a triangle formed by one peak part 11 and two valley parts 12. A gap S2 is formed between the two wing-like parts 14, specifically between the second edge parts 14b.

  As illustrated in FIG. 4, the mountain portion 11 abuts on the article 1 and supports the article 1. The trough 12 faces the inner peripheral surface 2a of the packaging box 2 and abuts on the inner peripheral surface 2a.

  Wings 14 are not provided at the peaks 111 at both ends of the cushioning material 10. Although the cushioning material is extendable and contractible, the total length of the cushioning material coincides with the length of the inner peripheral surface of the box 2 in a state where the cushioning material is disposed in the packaging box 2. As will be described in detail later, the cushioning material 10 absorbs energy by stretching. The crest portions 111 at both ends of the cushioning material 10 have a role of contracting and maintaining the entire length of the cushioning material 10 when a part of the cushioning material 10 is extended for energy absorption. Thus, although the peak part 111 in which the wing-like part 14 is not provided may be provided in the both sides of the shock absorbing material 10, it may be only in one side.

  Next, assembly of the cushioning material 10 will be described with reference to FIGS. 5, 6 (A), 6 (B), and 6 (C). FIG. 5 is an explanatory view illustrating an example of a pattern 15 that is a developed view of the cushioning material 10. FIG. 6 is a diagram illustrating a process of forming the cushioning material 10 by bending the pattern paper 15, and FIG. 6A is a diagram illustrating a state in which the pattern paper 15 is prepared. FIG. 6B is an explanatory diagram illustrating a process of bending the protrusion 18. FIG. 6C is an explanatory diagram illustrating a process of completing the cushioning material 10.

  The pattern paper 15 is made of paper, specifically cardboard board, and the cushioning material 10 can be formed by bending each part. The pattern paper 15 includes mountain folds 16 and valley folds 17 that are alternately and continuously arranged. The mountain fold 16 corresponds to the mountain 11 of the completed cushioning material 10. The valley fold 17 corresponds to the valley 12 of the cushioning material 10 after completion. The pattern paper 15 is provided with a protrusion 18 provided on the edge along the X direction, which is a direction in which the mountain fold 16 and the valley fold 17 are continuous, via a fold line L2.

  The protrusion 18 has a triangular shape, and two corners of the triangular shape are located on the folding line L2 to form connection end portions 18a and 18b. Moreover, the triangular projection part 18 is provided with the side part 18c of the side close | similar to each valley folding part 17, and this side part 18c is corresponded to the 1st edge part 14a after an assembly. Further, the protrusion 18 includes a side portion 18 d on the side close to the mountain fold portion 16. The side portion 18d corresponds to the second edge portion 14b after assembly.

  The protrusion 18 is provided away from the valley fold 17 at the fold line L2. That is, the connection end 18 a of the protrusion 18 is provided away from the valley fold 17. Thereby, when the pattern paper 15 is assembled and becomes the cushioning material 10, a gap S1 is formed.

  The connection end 18b on the side different from the connection end 18a of the protrusion 18 is also provided apart from the adjacent protrusion 18. That is, the connection end 18 b of the protrusion 18 is provided apart from the mountain fold 16 positioned between the two valley folds 17. As a result, a gap S <b> 2 is formed between the second edge portions 14 b corresponding to the edge 18 d when assembled into the pattern paper and becomes the cushioning material 10.

  First, as shown in FIG. 6A, a pattern paper 15 is prepared. The pattern paper 15 can be prepared by punching out cardboard board using a flat cutting machine. Then, the protrusion 18 of the pattern 15 is folded along the folding line L2, as described in FIG. 6B. The folding direction coincides with the direction in which the valley 12 protrudes when completed, that is, the side facing the inner peripheral surface 2a when it is arranged in the packaging box 2. Then, the pattern 15 is alternately bent so that the mountain folds 16 become the peaks 11 and the valley folds 17 become the valleys 12 as described in FIG. 6C. Thereby, the cushioning material 10 can be assembled from the pattern 15.

  Next, the state of vibration energy absorption of the cushioning material 10 will be described with reference to FIGS. 7A, 7B, 8 and 9. FIG. FIG. 7 is an explanatory diagram for explaining the movement of the cushioning material 10 when vibration with low energy is applied to the packaging box 2. Specifically, FIG. 7A is an explanatory diagram for explaining a normal state in which vibration is not applied to the buffer material 10, and FIG. 7B is an explanatory diagram for explaining a state in which the buffer material 10 is extended by vibration. It is. FIG. 8 is an explanatory diagram for explaining the movement of the cushioning material when an impact with large energy is applied to the packaging box 2. FIG. 9 is an explanatory diagram for explaining a state in which the corner portion 14c of the wing-like portion 14 is plastically deformed. These drawings describe the movement and action of the cushioning material 10 disposed on the bottom surface of the packaging box 2, but the same applies to the other cushioning materials 10, 20, and 30.

  As illustrated in FIG. 7A, the article 1 is supported by the cushioning material 10 in contact with the mountain portion 11 in a normal state. At this time, the cushioning material 10 is in a contracted state, and a gap S1 is formed between the inner peripheral surface 2a and the first edge portion 14a. Note that the gap S1 changes every moment when vibration is applied.

  When vibration is applied and the article 1 attempts to move toward the inner peripheral wall 2a, the cushioning material 10 extends in the region provided with the wing-like portion 14, as indicated by an arrow X1. This absorbs energy. As the cushioning material 10 extends, the gap S1 becomes smaller. As the cushioning material 10 extends as indicated by the arrow X1, the crests 111 at both ends contract as indicated by the arrow X2, respectively, so that the entire length of the cushioning material 10 is maintained.

  The shock absorbing material 10 absorbs energy by repeating the expansion and contraction operation as described above when receiving vibration with low energy. Depending on the state of vibration, the second edge portions 14b may approach each other. However, the provision of the gap S2 prevents the wing-like portions 14 from colliding with each other. Smooth expansion and contraction is possible.

  Next, the movement of the cushioning material 10 when an impact with large energy is applied to the packaging box 2 will be described. When the energy applied to the packaging box 2 is large, the article 1 pushes the peak portion 11 of the cushioning material 10 with a large force. For this reason, the buffer material 10 is extended, and the corner portion 14c of the wing-like portion 14 collides with the inner peripheral surface 2c and deforms. Energy is absorbed by the plastic deformation of the corner portion 14c. Thus, the buffer material 10 can absorb a large amount of energy.

  FIG. 9 illustrates a state where the corner portion 14c of the wing-like portion 14 is plastically deformed due to a large impact. Although the wing-like portion 14 of the cushioning material 10 is deformed, the wave shape in which the peak portion 11 and the valley portion 12 are continuous is maintained. Therefore, the cushioning material 10 can continue to absorb vibration due to expansion and contraction. Further, since the wave shape is maintained, the article 1 can be held in a predetermined position in the packaging box 2. Further, the wing-like portion 14 can absorb large energy such as a plurality of drop impacts by repeating plastic deformation.

  As described above, the cushioning material 10 has a wide range in spite of its small size by separating the wave-shaped portion that absorbs smaller energy into elastic deformation and the wing-shaped portion that absorbs larger energy into plastic deformation. Energy absorption. According to the shock absorbers 10, 20, and 30 of the first embodiment, the shock absorber can be downsized and a wide range of energy absorption can be realized. By downsizing the buffer material, it is advantageous in terms of cost reduction and resource saving. Further, since the cushioning material 10 can be manufactured from a single pattern 15 by bending, the cost is reduced in this respect as well.

  Next, the cushioning material 50 of the second embodiment will be described with reference to FIGS. 10 (A) and 10 (B). FIG. 10A is an explanatory diagram for explaining a pattern 55 serving as a development view of the cushioning material 50 according to the second embodiment, and FIG. 10B is a perspective view for explaining the cushioning material 50.

  The shock absorbing material 50 of the second embodiment is different from the shock absorbing material 10 of the first embodiment in that the wing-like portion 54 of the shock absorbing material 50 is a direction in which the crest 51 and the trough 52 are continuous, that is, a direction orthogonal to the X direction. That is, a plurality of points are provided along the Y direction. The wing-like portion 54 is the same in that it absorbs a large amount of energy by plastic deformation, whether it is provided at the end or in the middle of the Y direction.

  The pattern 55 of the cushioning material 50 includes an extruding portion 59 in the middle of the Y direction. The extruded portion 59 is bent in the same manner as the protruding portion 58 corresponding to the protruding portion 18 of the first embodiment, thereby forming a wing-shaped portion 54 continuous from the edge portion 53. As described above, by providing the plurality of wing-like portions 54 in the Y direction, the shape retention of the wave shape is enhanced. In particular, when holding an article that is long in the Y direction, the wing-like portion 54 located in the middle of the Y direction functions effectively. Thus, it becomes easy to cope with repeated impacts by increasing the shape retention.

  Next, Example 3 will be described with reference to FIG. FIG. 11 is an explanatory diagram for explaining a pattern 65 serving as a development view of the cushioning material according to the third embodiment. The pattern paper 65 includes a protrusion 68 and an extrusion 69 as in the second embodiment. Example 3 differs from Example 2 in that the extrusion part 59 of Example 2 is provided with a pair of extrusion parts 59, whereas the extrusion part 69 of Example 3 is provided with one part. , One by one.

  The arrangement of the extruding part 69, that is, the arrangement of the wing-like part can be appropriately changed as necessary. For example, depending on the property of the article, a large number of wing-like portions may be arranged at a location that supports a portion having a large weight.

  Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the specific embodiments, and various modifications, within the scope of the gist of the present invention described in the claims, It can be changed.

  For example, as will be described with reference to FIG. 12A, the first edge portion 74 located on the inner side of the line segment L <b> 1 connecting the two adjacent valley portions 72 can be extended from the valley portion 72. That is, the first edge portion 74a can be extended obliquely from the valley portion 72 toward the mountain portion 71 side. Accordingly, a gap S1 can be formed between the corner 74c where the first edge 74a and the second edge 74b intersect with the inner peripheral surface 2a.

  Further, as described with reference to FIG. 12B, the first edge portion 84 a may extend from the middle of the edge portion 83 that connects the peak portion 81 and the valley portion 82. Accordingly, a gap S1 can be formed between the corner portion 84c where the first edge portion 84a and the second edge portion 84b intersect with the inner peripheral surface 2a.

DESCRIPTION OF SYMBOLS 1 Goods 2 Packing box 2a Inner peripheral surface 10, 20, 30 Cushioning material 11, 51, 71 Mountain part 12, 52, 72 Valley part 13, 53 Edge part 14, 54, 74, 84 Airfoil part 14a, 54a, 74a, 84a First edge portion 14b, 74b, 84b Second edge portion 14c Corner portion 15, 55, 65 Paper pattern 16, 56 Mountain fold portion 17, 57 Valley fold portion 18, 58 Projection portion 18a, 18b Connection end portion 18c Side portion 18d Side 59, 69 Extrusion part S1 gap S2 gap

Claims (5)

A cushioning material arranged along the inner peripheral surface of the packaging box,
Alternating peaks and valleys,
A connection part that connects the peak part and the valley part inside the peak part,
A wing-like part provided in the connection part,
The wing-like portion includes a first edge portion located on the inner side of a line segment connecting two adjacent valley portions.   The wing-like portion is provided in each of two connection portions extending from one peak portion, and a gap is formed between the second edge portions of the two wing-like portions facing each other. 1. The cushioning material according to 1.   The shock-absorbing material according to claim 1 or 2, wherein a plurality of the wing-like portions are provided along a direction orthogonal to a direction in which the peak and valley are continuous.   The cushioning material according to any one of claims 1 to 3, wherein the wing-like part is formed by bending a part of the connection part.   A packaging box comprising the shock-absorbing material according to any one of claims 1 to 4 inside.

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