JP2007106455A - Cushioning material for packing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cushioning material for packing, which has sufficient strength and cushioning effect, and is easily cut and assembled as well as easily disassembled and recycled. <P>SOLUTION: At least one cushioning material (11) formed by folding a sheet of corrugated board is provided. The cushioning material (11) is composed of a plurality of layers (upper layers 17a and 18a and lower layers 17b and 18b) of corrugated board. Each layer is connected with its adjacent layer by being folded along lines (14, 15, and 16) obliquely crossing flute directions Fa and Fb of the corrugated board. The flute directions Fa and Fb of each layer are perpendicular to those of its adjacent layer. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cushioning material for packaging used when transporting precision electric machines and the like.

  Conventionally, when packing precision electric machines and the like, many polystyrene foams have been used as cushioning materials. Styrofoam has a high buffering effect and has an advantage that it can be easily molded in accordance with the shape of the package. On the other hand, there is also a drawback that processing after use is difficult. In recent years, packaging materials other than foamed polystyrene have been demanded due to increasing environmental awareness.

  Corrugated cardboard is an effective material as an alternative to polystyrene foam. Corrugated cardboard has the advantage that it can be reused because the raw material is paper, has little impact on the environment when discarded, and is easy to process. However, corrugated cardboard has a disadvantage in that the strength as a cushioning material varies depending on the direction. That is, it is strong against end face compression and bending due to external force in the flute direction of the corrugated cardboard (direction parallel to the center of the core), but against end face compression and bending due to external force from the direction perpendicular to the flute direction. There was a problem that strength was inferior.

  In order to solve this problem, it has been proposed to stack and bond two or more cardboards so that the ridge directions of the peak portions of the core are orthogonal to each other (see Patent Document 1). However, since the proposed cushioning material uses an adhesive to superimpose the cardboards together, there is a problem that the cured adhesive hinders the cutting process. Further, although water-resistant three-layer cardboard is also commercially available, there is a problem that it is difficult to cut and expensive as in the above example.

Japanese Utility Model Publication No. 5-82867

  The present invention was made to solve the above-described problems of the conventional packing cushioning material, and its purpose is that it has sufficient strength and buffering effect, and is easy to cut and assemble, An object of the present invention is to provide an inexpensive packing cushion material that can be easily disassembled and reused.

  In order to solve the above problems, the present invention has at least one cushioning material configured by bending a single cardboard, and the cushioning material is composed of a plurality of layers made of the cardboard, and each of the layers is the above-mentioned A cushioning material for packaging was constructed in which the flute directions of the adjacent layers are mutually orthogonal and the flute directions of the adjacent layers are orthogonal to each other by being folded along a folding line that obliquely intersects the flute direction of the cardboard.

Further, the present invention has at least one cushioning material configured by bending a blank made of a single cardboard, and the blank extends in a direction in which one pair of opposite sides is substantially orthogonal to the flute direction of the cardboard. The parallelogram is divided into a plurality of congruent parallelogram parts by a fold line parallel to the other set of opposite sides, and each of the parallelogram parts has two fold lines arranged on the diagonal line. It is divided into right triangle parts,
In the state in which the blank is folded at each fold line to form a buffer material composed of a plurality of continuous layers, each layer has a rectangular shape in which the hypotenuses of the two right-angled triangular portions meet each other. Made up material.

  In the present invention, it is preferable that each fold line intersects the flute direction of the corrugated cardboard at approximately 45 degrees. Further, the cushioning material for packaging is formed by stacking any one of the cushioning materials and a second cushioning material made of corrugated cardboard having the same shape as each layer of the cushioning material and having a flute direction parallel to the long side or the short side. . Furthermore, the opening part matched with the shape of the to-be-packaged object was formed in said 2nd buffer material.

  As described above, the cushioning material for packing according to the present invention has at least one cushioning material formed by bending one cardboard, and the cushioning material is composed of a plurality of layers made of the cardboard, Each layer is folded with a fold line that obliquely intersects the flute direction of the corrugated cardboard and is continuous with the adjacent layer, and the flute directions of the adjacent layers are orthogonal to each other. The strength against end face compression is excellent, and the end face compressive strength and bending strength in each fold line direction are increased by each fold portion along the fold line, and a sufficient buffering effect is obtained.

  Also, no bonding is required between the layers, and even if a fixing means such as bonding is used, it is minimal, so that cutting and assembly can be easily performed, and disassembly and reuse can be easily performed. In addition, since it can be manufactured by a normal processing method such as die-cutting or folding line processing of a single cardboard without using a special material or reinforcing material, an inexpensive packing cushioning material can be provided.

The above effect has at least one cushioning material formed by bending a blank made of a single cardboard, and the blank is parallel with a pair of opposite sides extending in a direction substantially perpendicular to the flute direction of the cardboard. The quadrilateral shape is divided into a plurality of congruent parallelogram parts by fold lines parallel to the other set of opposite sides, and each parallelogram part is divided into two right angles by fold lines arranged on the diagonal lines. It is divided into triangular parts,
In a state where the blank is folded at each fold line and a cushioning material composed of a plurality of continuous layers is formed, each layer also has a rectangular shape in which the hypotenuses of the two right-angled triangular portions are abutted. It is obtained similarly.

  Further, in the aspect in which each fold line intersects the flute direction of the corrugated cardboard at approximately 45 degrees, the respective flute directions orthogonal to each other and the respective fold line directions orthogonal to each other are arranged in a complementary and symmetrical manner. The cushioning material for packing excellent in strength and stability can be configured.

  Further, any one of the cushioning materials (first cushioning material) and a second cushioning material made of corrugated cardboard having the same shape as each layer of the cushioning material and having a flute direction parallel to the long side or the short side are overlapped. In this embodiment, the flute direction of the first buffer material and the flute direction of the second buffer material are oriented in the triaxial direction, and the second buffer material is combined with the folding lines of the first buffer material. The flute direction of the material is oriented in the long side or short side direction to which an external force is applied, and a packing cushioning material excellent in end surface compressive strength and cushioning effect can be configured. Furthermore, in the aspect which formed the opening part match | combined with the shape of the to-be-packaged object in said 2nd shock absorbing material, a to-be-packed object can be fixed to the predetermined position of the packing shock-absorbing material easily and reliably, Stability is improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an example of packing a precision machine, which is an article to be packed 2, using a packing cushioning material 1 according to the present invention. In the figure, the packing cushioning material 1 is composed of a cushioning material 11 (first cushioning material) and a cushioning material 21 (second cushioning material) disposed thereon. FIG. 2 is a plan view showing the blank 10 of the cushioning material 11, and the cushioning material 11 is configured by bending the blank 10 made of a single cardboard.

  The blank 10 is obtained by cutting a corrugated cardboard with a pair of parallel opposite sides 12 and 12 slightly inclined with respect to its longitudinal direction (feeding direction when corrugating the corrugator), and further, the corrugated board flute direction F (width) A parallelogram shape extending in a direction substantially orthogonal to the flute direction F is cut by cutting at another pair of parallel opposite sides 13 and 13 having an intersection angle α (45 degrees in the illustrated example) with respect to the direction). There is no.

  Further, the blank 10 is provided with a fold line 16 parallel to the opposite sides 13 and 13, and the fold line 16 divides the blank 10 into two congruent parallelogram parts 17 and 18, and each parallelogram part 17 and 18 has The polygonal lines 14 and 15 arranged on the diagonal lines are divided into right triangle portions 17a and 17b and right triangle portions 18a and 18b, respectively.

The blank 10 configured as described above is folded in the process as shown in FIGS. 3A to 3C to form the cushioning material 11.
First, as shown in FIG. 3A, one right triangle portion 17b of the blank 10 is bent along the folding line 14 and overlapped with the adjacent right triangle portion 17a, and then as shown in FIG. 3B. The folded right triangle portions 17a and 17b are bent along the folding line 16 and overlapped with the right triangle portion 18b. As a result, the hypotenuse of the right triangle portion 17b and the hypotenuse of the right triangle portion 18b are abutted to form a rectangular layer (17b, 18b) made of cardboard. Further, as shown in FIG. 3C, the right triangle portion 18a is bent along the fold line 15 and overlapped on the right triangle portions 17b and 18b. As a result, the hypotenuse of the right triangle portion 18a and the hypotenuse of the right triangle portion 17a are abutted to form a rectangular layer (17b, 18b) made of corrugated cardboard, and the cushioning material 11 is formed.

  As shown in FIG. 4, the cushioning material 11 configured as described above includes an upper layer (17 a, 18 a) and a lower layer (17 b, 18 b) that are vertically adjacent to each other by folding lines 14, 15, 16. The sides are continuous with each other, and the flute directions Fa and Fb are orthogonal to each other between the upper layer (17a and 18a) and the lower layer (17b and 18b). Thereby, not only the strength against the end surface compression by the external force from each flute direction Fa and Fb is ensured, but also the direction along each fold line 14, 15, 16 by each fold portion, that is, the longitudinal direction of the cushioning material 11. In addition, it has excellent end face compressive strength and bending strength against external force from the short direction.

  Further, each of the upper layer (17a, 18a) and the lower layer (17b, 18b) made of corrugated cardboard has a double structure, and the three side bent portions (14, 15, 16) have a restoring force. Thus, the cushioning material 11 has a good cushioning effect in the thickness direction. The corrugated cardboard used for the cushioning material 11 (blank 10) is preferably a double-sided cardboard having liners on both sides of the corrugated core and a single-sided cardboard having liners only on one side. Thick cardboard, such as double-sided cardboard, can be used if the width is wide.

  As described above, the cushioning material 11 alone has sufficient strength and cushioning effect as a cushioning material, but when combined with the cushioning material 21, the strength and convenience can be further improved. FIG. 5 shows a state in which the cushioning material 21 is stacked on the upper side of the cushioning material 11 to constitute the packaging cushioning material 1. The cushioning material 21 is formed of a rectangular cardboard having the same shape as the cushioning material 11, and the flute direction Fc thereof is arranged in parallel to the long side of the cushioning material 21. The buffer material 21 has an opening 22 that matches the shape of the article 2 to be packed. In addition to the case of full punching as shown in the illustrated example, the opening 22 is provided with a partial cut in the cushioning material 21, and the part is folded back and formed into an opening that matches the shape of the article 2 to be packed. You may do it.

  By setting it as such a composite buffer material (11, 21), each flute direction Fa and Fb of the buffer material 11 and the flute direction Fc of the buffer material 21 are orientated in the triaxial direction, and each of the buffer material 11 The direction of the folding lines 14, 15, 16 and the flute direction Fc of the cushioning material 21 are oriented in the long side or short side direction to which an external force is applied, and the cushioning material 1 for packing excellent in end surface compressive strength and cushioning effect is obtained. Can be configured. Further, the object to be packed 2 can be easily and reliably fixed at a predetermined position of the buffer material 1 for packing by the opening 22 formed in the buffer material 21, and the stability of the object to be packed is improved. In addition, it is also possible to use a combination of another cushioning material, which is formed of corrugated cardboard having the same shape as the cushioning material 21 and whose flute direction is parallel to the short side of the cushioning material 21, either above or below the cushioning material 21. it can.

  In the packaging example shown in FIG. 1, the cushioning materials 11 and 21 configured as described above contain the packaged material 2 in the opening 22 of the cushioning material 21, position the packaged material 2 in the plane direction, and provide cushioning. In a state where the object to be packed 2 is supported from below by the material 11, the object to be packed 2 and the cushioning materials 11, 21 are bound by the wrapping 3, and are accommodated in the outer box 4 in this state. Furthermore, the middle cylinder 5 is inserted into the outer box 4 so as to surround the article 2 to be packed. Thus, when the flaps 6, 6 and 7, 7 of the outer box 4 are closed, the packing material 1 for packing is fixed to the bottom of the outer box 4 by the inner cylinder 5, and the packaged item 2 is prevented from being lifted up. Fixed to the center of the outer box 4. In such a packing state, the cushioning material 11 relieves the impact from below on the article 2 and reinforces the outer box 4 to relieve the shock from the side of the outer box 4.

  Next, another embodiment of the cushioning material according to the present invention is shown in FIGS. 6A and 6B, and will be described below with reference to the drawings. The cushioning material (30) shown in FIG. 6 (a) is composed of a parallelogram blank 30 in which a pair of opposite sides 32, 32 coincide with both side edges of the cardboard and extend in a direction perpendicular to the flute direction F. The In the blank 30, each parallelogram portion divided by fold lines 35, 35,... Parallel to the other pair of opposite sides 33 is formed by fold lines 34, 34,. Are divided into two right-angled isosceles triangle portions, that is, the lengths of the fold lines 34, 34,... Coincide with the lengths of the opposite side 33 and the fold lines 35, 35,.

By folding the blank 30 in the same manner as described above, the cushioning material (30) having a square planar shape is formed. Although the planar shape of the cushioning material is limited in this form, there is an advantage that the excess portion of the cardboard forming the blank 30 is reduced and the number of cut portions is reduced.
Moreover, although the buffer material 11 of the said embodiment showed the case where it comprised by two upper and lower layers, if the blank 30 is extended and the folding lines 34, 35, 34, 35, ... are increased like the example of illustration, it will be. It is possible to increase the number of layers of 3 layers, 4 layers, and cushioning materials. In this case, the layers are continuous with each other at the broken lines 34 and 35 and are stacked while forming a spiral.

  The cushioning material (40) shown in FIG. 6 (b) is also composed of a parallelogram blank 40 in which a pair of opposite sides 42, 42 coincide with both side edges of the cardboard and extend in a direction perpendicular to the flute direction F. The other points 43 and 43 and the fold line 45 parallel to the other pair are the crossing angle β formed with respect to the flute direction F of the corrugated cardboard and the fold lines 44 and 44 with respect to the flute direction F. This shows a case where the crossing angle α formed is different. However, the opposite side 43, the folding line 45, and the folding lines 44, 44 are orthogonal to each other.

  The cushioning material (40) formed by folding the blank 40 has a rectangular planar shape, but as the length ratio of the rectangle increases, the fold lines 44 and 45 are in relation to the flute direction F of the cardboard. The bias of the crossing angles α and β formed by the operator increases, and the effect of enhancing the end face compressive strength at the short side of the rectangular cushioning material (40) decreases. However, this can be supplemented by combining with the buffer material 21. The advantage of reducing the surplus portion of the cardboard forming the blank 40 and reducing the number of cut portions is the same as that of the blank 30.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

It is a perspective view which shows the process of packing a to-be-packaged object using the buffer material for packing concerning embodiment of this invention. It is a top view which shows the blank of the buffer material concerning embodiment of this invention. It is a perspective view which shows the process of making a shock absorbing material from the blank concerning embodiment of this invention. It is a top view which shows the shock absorbing material which concerns on embodiment of this invention. It is a perspective view which shows the shock absorbing material for packing concerning embodiment of this invention. (A) (b) is a top view which shows the blank of the cushioning material concerning another embodiment of this invention, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Packing material 2 Packing material 3 Wrapping 4 Outer box 5 Inner cylinder 6, 7 Flap 10, 30, 40 Blank 11 Buffering material 12, 13, 32, 33, 42, 43 Opposite side 14, 15, 16, 34, 35, 44, 45 Folded line 17, 18 Parallelogram part 17a, 17b, 18a, 18b Right triangle part 21 Cushioning material (second cushioning material)
22 Openings F, Fa, Fb Flute directions α, β Crossing angle

Claims (5)

  It has at least one cushioning material formed by bending one cardboard, and the cushioning material is composed of a plurality of layers made of the cardboard, and each layer is a folding line that obliquely intersects the flute direction of the cardboard. A cushioning material for packaging, wherein the cushioning material is continuous with adjacent layers by being folded and the flute directions of the adjacent layers are orthogonal to each other. The blank has at least one cushioning material configured by bending a blank made of corrugated cardboard, and the blank has a parallelogram shape in which a pair of opposite sides extends in a direction substantially perpendicular to the flute direction of the corrugated cardboard. , And is divided into a plurality of congruent parallelogram parts by another set of fold lines parallel to the opposite sides, and each of the parallelogram parts is further divided into two right triangle parts by fold lines arranged on the diagonal lines. And
In the state in which the blank is folded at each fold line and a cushioning material composed of a plurality of continuous layers is formed, each layer has a rectangular shape in which the hypotenuses of the two right-angled triangular portions are abutted. Packing cushioning material.   The packing cushioning material according to claim 1 or 2, wherein each fold line intersects the flute direction of the corrugated cardboard at approximately 45 degrees.   The cushioning material according to claim 2 and a second cushioning material made of corrugated cardboard having the same shape as each layer of the cushioning material and having a flute direction parallel to the long side or the short side. Packing cushioning material. The cushioning material for packing according to claim 4, wherein an opening is formed in the second cushioning material in accordance with the shape of the article to be packed.

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