JP2003072853A - Cushioning material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cushioning material which can arbitrarily adjust the cushioning characteristic which is naturally determined by the thickness and the material of a flat corrugated fiberboard constituting a laminate corrugated fiberboard and the pitch of a corrugate plate. SOLUTION: In the cushioning material 101 formed by laminating the corrugated fiberboard comprising a flat plate 2 and a corrugate plate 3, at least one of the corrugated fiberboard has a predetermined oriented structure, the oriented structure is constituted by at least one corrugated fiberboard having a cut section SY1 forming a positive angle below 90 deg. with respect to the longitudinal direction of a small pipe formed by the corrugate plate 3, or the oriented structure is constituted by arranging the corrugated fiberboard so that the longitudinal direction of the small pipe of at least one corrugated fiberboard is different from the longitudinal direction of the small pipe of another corrugated fiberboard.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning material formed by laminating cardboard materials for protecting shock-absorbing articles from vibrations and impacts during movement or transportation.

[0002]

2. Description of the Related Art Conventionally, polyurethane foam, expanded polystyrene or the like has been generally used as a cushioning material for moving or transporting articles. Chemical products made from these petroleum products are easy to mold and have excellent cushioning performance, which makes it possible to protect shock-absorbing articles from vibration and shock during movement or transportation. There was a processing problem.

That is, chemical products do not rot when buried in soil,
If incinerated, toxic gas is generated and burns at extremely high temperatures, which may damage the incinerator. Also, recycling to the same material or similar material cannot be easily performed. Therefore, a cushioning material formed by stacking corrugated cardboard materials is gradually used in recent years from the viewpoint that without using petroleum chemical products, there is little environmental pollution at the time of post-use treatment, and recycling can be performed relatively easily. It has started to be done.

FIG. 6 is a perspective view showing a general laminated cardboard applied to the present invention and conventionally applied. FIG. 7 is a diagram showing a structure of the laminated cardboard shown in FIG. The cushioning material or laminated cardboard 1 formed by laminating the corrugated cardboard materials shown in FIG. 7 is formed by alternately laminating a plurality of flat plates 2 and corrugated plates 3 formed by bending the flat plates 2 in a wave pattern of continuous peaks and valleys. A plurality of thin tubes 6 are formed by the corrugated plate 3 between the flat plates 2 by joining the ridges and valleys 4 of the plate 3 with the adhesive 5.

The cushioning material formed from the laminated cardboard 1 has been variously devised from the past in order to enhance its strength and cushioning performance and improve its usability. For example, as disclosed in Registered Utility Model No. 3000301,
The cross-sectional shape of a laminated cardboard material such as a honeycomb plate is 90
There is one in which a V-shaped groove having a degree of V is provided, and a protective cushioning piece is formed at a corner portion of the cushioned article by bending the laminated cardboard material until both sides of the groove come into contact with each other.

[0006]

However, in the cushioning material composed of the conventional laminated cardboard 1 shown in FIG. 6, a plurality of corrugated sheets 3 formed between the flat plates 2 of the laminated cardboard 1 in the direction of receiving an impact load. It was either parallel or perpendicular to the length of the tubule. That is, in the conventional cushioning materials 108 and 109 shown in FIGS. 8 and 9, as shown in FIG.
In the case of receiving a load F _Y8 parallel to the length direction of the plurality of thin tubes formed by the corrugated plate 3 between the flat plates 2 of the cushioning material 108,
Alternatively, as shown in FIG. 9, a load F perpendicular to the length direction of the thin tube formed by the corrugated plate 3 between the flat plates 2 of the cushioning material 109.
It was when I received _Y9 . In the case where the cushioning materials 108 and 109 are formed from the same laminated corrugated cardboard 1 and the load receiving surface is parallel or perpendicular to the longitudinal direction of the plurality of thin tubes formed by the corrugated sheet 3 between the flat plates 2 of the laminated corrugated cardboard 1. is there.

In the case of the cushioning material 108 shown in FIG. 8, the amount of deformation with respect to the load for deforming the cushioning material 108 is the smallest. Further, in the case of the cushioning material 109 shown in FIG. 9, the amount of deformation with respect to the load trying to deform the cushioning material 109 is the largest. That is, the conventional cushioning material 108
And 109, when the plate thickness and the material of the flat plate 2 of the cardboard material forming the cushioning material and the pitch size of the corrugated sheet 3 obtained by bending the flat plate 2 in a corrugated manner are determined, the load that tries to deform the cushioning materials 108 and 109 There is a problem in that the amount of deformation with respect to is naturally determined, and the amount of impact load that the cushioning materials 108 and 109 can receive cannot be arbitrarily adjusted. This has been a particular problem when there is a space constraint in which the cushioning material is used.

Therefore, an object of the present invention is to arbitrarily adjust the cushioning characteristics which are naturally determined by the thickness of the flat plate of the corrugated cardboard material, the material and the pitch size of the corrugated corrugated plate. The purpose of the present invention is to provide a cushioning material that can be manufactured and is inexpensive and easily manufactured.

[0009]

Means for Solving the Problems and Effects of the Invention In order to achieve the above object, in the present invention, the cushioning material is a cushioning material formed by laminating cardboard materials consisting of flat plates and corrugated plates. At least one of them is arranged so as to have a predetermined orientation structure for adjusting the cushioning characteristics of the cushioning material.

Then, a cushioning material composed of a conventional laminated cardboard having a predetermined orientation structure is naturally formed depending on the thickness of the flat plate constituting the cardboard material, the material, and the pitch size of the corrugated plate obtained by bending the flat plate in a corrugated shape. It is possible to arbitrarily adjust the determined cushioning characteristic.

The orientation structure may be composed of at least one corrugated cardboard material having a cutting surface that makes a positive angle of less than 90 degrees with the length direction of the thin tube formed by the corrugated plate. Then, when the load is applied from the direction perpendicular to the length direction of the thin tube of the laminated cardboard and the deformation amount is the largest, and when the load is applied parallel to the length direction of the thin tube and the deformation amount is the smallest. An intermediate amount of deformation can be taken.

To determine the above angle, the angle is set to 90
It is advisable to prepare a plurality of cushioning materials that are changed within a positive range of less than 10 degrees and measure the cushioning characteristics. Accordingly, it is possible to provide a cushioning material that can realize optimum cushioning characteristics for the cushioned article. Further, a cutout portion may be provided in a part of the cushioning material made of the laminated cardboard, and a corner portion of the cushioned article may be brought into contact with the cutout portion to cushion the cushioned article. Then, when the article to be buffered including the buffer material has a space limitation, the buffer material can be efficiently used. Alternatively, an oblique cutoff portion may be provided on the cut surface of the cushioning material, and a portion of the article to be cushioned may be placed on the cutoff portion for cushioning. Then, the cushioning material matched to the shape of the cushioned article can be used. Further, when a cushioning material having a cutout portion provided in a part of the cushioning material and a cushioning material having an oblique cut-off portion provided on the cut surface of the cushioning material are used in combination, there is a space limitation. In addition, the cushioning material of the article to be cushioned, which has a more complicated shape and requires complicated cushioning characteristics, can have appropriate cushioning characteristics.

Further, the orienting structure is arranged such that the cardboard material is arranged so that the length direction of the thin tube of at least one of the cardboard materials is different from the length direction of the thin tubes of the other cardboard materials. Good. Then,
It is possible to arbitrarily adjust the cushioning characteristics against a load applied to the conventional cushioning material having the same length direction of the thin tubes of the cardboard material of the laminated cardboard.

In order to determine the arrangement of the cardboard material, it is preferable to prepare a plurality of cushioning materials having different arrangements in the lengthwise direction of the thin tube of the cardboard material and measure the cushioning performance. As a result, it is possible to provide a cushioning material that can realize optimum cushioning performance for the cushioned article.

Alternatively, the orientation structure of the buffer material is
The cardboard material is arranged such that the length direction of the thin tube of at least one of the cardboard materials is different from the length direction of the thin tube of the other cardboard material, and at least one of the cardboard material is formed by the corrugated plate. It can be configured to have a cutting surface that makes a positive angle of less than 90 degrees with the length direction of the tubule.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, specific examples as embodiments of the present invention will be described in detail with reference to the accompanying drawings and tables. In the present embodiment, the orientation structure of the cardboard material for adjusting the cushioning characteristics includes the following structure. One structure is that the orientation of the cardboard material, specifically, the length direction of the thin tube of the corrugated sheet forming the cardboard material, is within a predetermined range of less than 90 degrees with respect to the edge that outlines the cardboard material. This is a structure in which cardboard materials are stacked in an inclined state. The other structure is a structure in which the individual cardboard materials that make up the laminated cardboard are stacked without taking the same direction in a unified manner. Specifically, the length direction of the thin tube of one cardboard material is the other cardboard. The structure is different from the length direction of the thin tube of the material. Further, a structure having both of the above two structures is also included in this embodiment. Specific examples will be described below.

The first embodiment is a case in which the orientation structure of the cardboard material in the laminated cardboard is a cushioning material that makes an angle of 20 degrees with the length direction of the thin tube formed by the corrugated plate. Figure 1
FIG. 3 is a perspective view of a cushioning material according to the first embodiment of the present invention. Table 1
3 is a table showing the acceleration and the amount of deformation of the cushioning material shown in FIG. 1 with respect to an impact load.

The cushioning material 101 according to the present invention is formed from laminated cardboard materials similar to the laminated cardboard 1 shown in FIG. As shown in FIG. 1, it has a cut surface S _Y1 that intersects the flat plate 2 of the cardboard material at a right angle, and the cut surface S _Y1 is the longitudinal direction AA and θ of the thin tube of the cardboard material (θ = in this embodiment).
It is formed to intersect at an angle of 20 °).

In this way, the load F _Y1 applied from above (Y direction in FIG. 1) at right angles to the cut surface S _Y1 of the cushioning material 101.
Means that a load is applied from an oblique direction at an angle of θ with respect to the lengthwise direction AA of the thin tube of the cushioning material 101. Next, the cushioning characteristics of the cushioning material 101 will be described.

Generally, the cushioning property of the cushioning material is evaluated by an impact test. In the impact test, a weight is dropped onto the cushioning material, which is the object to be tested, from above to apply an impact load, and the acceleration and the amount of deformation of the cushioning material are measured. The magnitude of the impact load can be set by changing the weight of the weight and the height at which the weight is dropped. The impact test can be repeated as many times as necessary.

In order to evaluate the cushioning characteristics of the cushioning material 101, the acceleration (G) of the cushioning material 101 when a weight is dropped from above the cut surface S _Y1 from above and a shock load F _Y1 is applied.
Table 1 shows the deformation amount (mm).

[0022]

[Table 1]

Table 1 shows a buffer of a rectangular parallelepiped having a size of 8 cm × 8 cm × 5 cm in length × width × height formed from laminated cardboard of material A _F nc120 under the conditions of temperature 20 ° C. and humidity 50%. The vertical direction of the cushioning material 101 when three weights of 3.8 kg, 4.8 kg and 5.8 kg are dropped from the height of 30 cm above the material 101 (see FIG. 1).
Shows the acceleration (G) and the amount of deformation (mm) in the Y direction. The impact load F _Y1 is obtained by multiplying the weight of the weight by the acceleration. The shock was continuously applied 3 to 4 times, and the acceleration (G) and the deformation amount (mm) of the cushioning material 101 were measured each time.

For example, the weight of the cushioning material 101 is 3.8 kg.
Cushioning material 10 in the first shock when shock is applied
The acceleration (G) and deformation amount (mm) of 1 are 2 from Table 1.
7.6G and 7mm. The acceleration (G) and the deformation amount (mm) due to the first impact of the cushioning material 101 in Table 1 are the conventional cushioning materials 108 and 1 made from the laminated cardboard 1.
Compare with 09.

In the perspective view of the conventional cushioning material 108 shown in FIG. 8, the laminated cardboard has a cutting surface that intersects the flat plate at a right angle, and the cutting surface corresponds to the longitudinal direction AA of the thin tube of the laminated cardboard. It is shaped so as to intersect at a right angle (corresponding to θ = 90 °). Buffer material 1 in FIG.
Table 2 shows the acceleration (G) and the amount of deformation (mm) of the cushioning material 108 when an impact load F _Y8 is applied from above the cutting surface S _Y8 of _No. 08 at a right angle (Y direction in FIG. 8). The weight weighs 3.8
The test conditions are the same as those of the cushioning material 101, except that the test conditions are kg, 5.8 kg, and 7.8 kg.

[0026]

[Table 2]

For example, the acceleration (G) at the first impact when a shock of 3.8 kg is applied to the cushioning material 108.
And the deformation amount (mm) is 127.6 G and 3 mm from Table 2, respectively. In the perspective view of the conventional cushioning material 109 shown in FIG. 9, the laminated cardboard has a cut surface that intersects the flat plate at a right angle, and the cut surface is parallel to the length direction AA of the thin tube of the laminated corrugated board. (Corresponding to θ = 0 °). Buffer material 109 in FIG.
Impact load F from above (Y direction in Fig. 9) perpendicular to the cutting plane S _Y9 of
Table 3 shows the acceleration (G) and the amount of deformation (mm) of the cushioning material 109 when _Y9 was added. Weight weight is 1.8
The test conditions are the same as those of the cushioning material 101, except that the test conditions are kg, 3.8 kg, and 5.8 kg.

[0028]

[Table 3]

For example, the acceleration (G) at the first impact when an impact is applied to the cushioning material 109 with a weight of 3.8 kg.
And the deformation amount (mm) is 18.4 G and 11 mm from Table 3, respectively. As described above, the first case in which weights having almost the same weight are dropped from the same height and shock is applied to the conventional cushioning materials 108 and 109 having the same dimensions as the cushioning material 101
The acceleration (G) / deformation amount (mm) at the first impact are 127.6 G / 3 mm and 18.4 G / 11 mm, respectively.

That is, the acceleration (G) / deformation amount (mm) of the cushioning material 101 indicates an intermediate value between the acceleration (G) / deformation amount (mm) of the conventional cushioning materials 108 and 109. Therefore, even with respect to the impact load obtained by multiplying the weight of the weight by the acceleration, the impact load received by the cushioning material 101 shows an intermediate level between the impact loads received by the conventional cushioning materials 108 and 109.

By the way, in the conventional cushioning material 108, as shown in FIG. 8, the direction of the impact load F _Y8 is parallel to the length direction AA of the thin tube by the corrugated plates 3 between the flat plates 2 of the laminated corrugated cardboard, and Impact load F _Y8 that attempts to deform the cardboard
This is the case where the amount of deformation with respect to is the smallest (therefore, the acceleration is the largest).

Further, in the conventional cushioning material 109, as shown in FIG. 9, the direction of the load F _Y9 is perpendicular to the length direction AA of the thin tube formed by the corrugated plates 3 between the flat plates 2 of the laminated cardboard, and This is the case where the amount of deformation with respect to the impact load F _Y9 that attempts to deform is the largest (and therefore the acceleration is the smallest).

That is, conventional cushioning materials 108 and 109
The impact loads F _Y8 and F _Y9 are inherently determined by the thickness of the flat plate 2 of the laminated cardboard, the material, and the pitch of the corrugated corrugated plate 3 of the continuous corrugation. Therefore, the fact that the shock load of the shock absorbing material 101 exhibits an intermediate magnitude of the shock load of the conventional shock absorbing materials 108 and 109 means that the shock absorbing characteristics of the shock absorbing material 101 are unique to the laminated cardboard of the conventional shock absorbing materials 108 and 109. It is shown to have an intermediate size of the buffer property.

As described above, the cushioning material 101 according to the present invention has the angle θ set to a predetermined size within the range of positive and less than 90 degrees, so that the cushioning characteristics of the maximum and minimum sizes peculiar to the laminated cardboard are obtained. A buffering characteristic of an intermediate size is obtained, and the size can be changed by changing the angle θ.

Next, application examples and use examples of the cushioning material 101 are shown in FIGS. FIG. 4A shows a cushioning material 101.
A cushioning member 104 is provided with a notch in a part thereof, and a cut surface S _{Y4 of the} notch receives a shock load. By bringing the corners of the cushioned article into contact with the cutout portions, the cushioning material can be efficiently used when the cushioned article including the cushioning material has a space limitation. In that case, the vertical surfaces S _X4 and S _Z4 adjacent to the cut surface S _Y4 can also be used as guide surfaces for restricting the movement of the cushioned article.

FIG. 4B shows a cushioning material 105 in which a diagonal cut-off portion S _Y5 is provided in a part of the cushioning material 101 and an impact load is received at the cut-off portion S _Y5 . in this way,
The shape of the cushioning material can be determined according to the shape of the article to be buffered. FIG. 5A is an example in which cushioning materials 112, 113, 114, and 115 having the same shape as the cushioning material 104 are used for the cushioned article 11.

FIG. 5B shows an example in which the cushioning materials 116 and 117 having the same shape as the cushioning material 104 and the cushioning materials 118 and 119 having the same shape as the cushioning material 105 are combined and used for the cushioned article 12. . Next, in the second embodiment, the cardboard material is arranged so that the orientation structure of the cardboard material in the laminated cardboard is different from the lengthwise direction of the capillaries of at least one cardboard material. This is the case of the cushioning material configured by.

FIG. 2 shows a cushioning material 10 according to the second embodiment of the present invention.
It is a perspective view of FIG. As shown in FIG. 2, the cushioning material 102 is such that a flat plate and a corrugated plate formed by bending the flat plate into continuous peaks and valleys are joined to each other so that the length direction of a plurality of thin tubes formed by the corrugated plates is the Y direction. In the laminated corrugated cardboard, one corrugated plate is inserted in every two corrugated plates in a direction (X direction) in which the length direction of the thin tubes is orthogonal to the length direction of the thin tubes of the two corrugated plates.

Table 4 shows the acceleration (G) and the amount of deformation (mm) when a shock load F _Y2 is applied to the flat surface S _Y2 of the cushioning material 102 of FIG. 2 from right above (Y direction in FIG. 2). . The test conditions are the same as the test conditions of the cushioning material 101 except that the weights are 3.8 kg, 5.8 kg, and 7.8 kg.

[0040]

[Table 4]

For example, the acceleration (G) at the first impact when the weight of the cushioning material 102 is 3.8 kg.
And the deformation amount (mm) is 79.1 G and 2 mm from Table 4, respectively. Further, as shown in FIG. 3, the cushioning material 103 is formed by joining a flat plate and a corrugated plate, and a plurality of thin tubes formed by the corrugated plates are sandwiched between the flat plates. In this, two corrugated plates in the X direction in which the length directions of the thin tubes are orthogonal to each other are inserted. Figure 3
Table 5 shows the acceleration (G) and the amount of deformation (mm) when an impact load F _Y3 is applied to the flat surface F _Y3 of the cushioning material 103 shown in FIG. 3 from above at right angles (Y direction in FIG. 3). Test conditions are buffer material 10
It is the same as the case of 2.

[0042]

[Table 5]

For example, the acceleration (G) at the first impact when a shock of 3.8 kg is applied to the cushioning material 103.
And the deformation amount (mm) is 45.5 G and 5 mm from Table 5, respectively. The acceleration (G) and the deformation amount (mm) of the cushioning material 103 are shown in FIGS.
8 and 109 are compared with the results of the impact load applied under the same conditions.

As described above, the impact loads F _Y8 and F _Y9 applied to the conventional cushioning materials 108 and 109 are uniquely determined by the plate thickness of the corrugated cardboard material, the material, and the pitch size of the corrugated sheet. In the size, when F _Y8 has the smallest amount of deformation for the load that tries to deform the laminated cardboard (hence, the largest acceleration),
This is the case where F _Y9 has the largest amount of deformation with respect to the load trying to deform the laminated cardboard (thus, the smallest acceleration).

Table 2 shows the acceleration (G) and the amount of deformation (mm) due to the first impact when a weight of 3.4 kg is dropped from a height of 30 cm above the conventional cushioning material 108.
1.2G and 3mm. Acceleration (G) and deformation (mm) due to the first impact when a weight weighing 3.8 kg is dropped from a height of 30 cm above the conventional cushioning material 109.
Is 18.4 G and 11 mm from Table 3.

As described above, the acceleration (G) at the first impact when a weight having almost the same weight is dropped from the same height to the conventional cushioning materials 108 and 109 having the same size as the cushioning material 103 and the impact is applied (G ) / The amount of deformation (mm) is 81.2G / 3mm and 18.4G / 11mm, respectively.

The fact that the acceleration (G) and the deformation amount (mm) of the cushioning material 103 become intermediate values between the acceleration (G) and the deformation amount (mm) of the conventional cushioning materials 108 and 109 means that the shock absorbing material 103 has a shock. Conventional cushioning materials 108 and 1 having a relaxation force
It is shown that the value becomes an intermediate value of the impact relaxation force of 09.
That is, it means that the cushioning characteristics of the cushioning material 103 have an intermediate size between the cushioning characteristics of the conventional cushioning materials 108 and 109. The same applies to the cushioning material 102.

As described above, by inserting the corrugated plates whose lengthwise directions of the thin tubes are orthogonal to each other between the corrugated plates constituting the laminated cardboard at a predetermined interval and number, the cushioning characteristics can be adjusted to an arbitrary size. Although not shown, in the cushioning material in which the length direction of the thin tube of one cardboard material of the laminated cardboard is different from the length direction of the thin tube of another cardboard material, the cut surface is positive with respect to the length direction of the thin tube. It is also possible to form a cushioning material having an angle in the range of less than 90 degrees.

[Brief description of drawings]

FIG. 1 is a perspective view of a cushioning material according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a cushioning material according to a second embodiment of the present invention.

FIG. 3 is a perspective view of a cushioning material according to a second embodiment of the present invention.

FIG. 4 is a diagram showing an application example of a cushioning material.

FIG. 5 is a diagram showing an example of use of a cushioning material.

FIG. 6 is a perspective view showing a general laminated cardboard that has been applied to the present invention and has been conventionally applied.

7 is a diagram showing a structure of the laminated cardboard shown in FIG.

FIG. 8 is a perspective view of a conventional cushioning material.

FIG. 9 is a perspective view of a conventional cushioning material.

[Explanation of symbols]

1 ... laminated cardboard 2. Flat plate 3 ... corrugated sheet 4 ... Mountain valley of corrugated sheet 5 ... Adhesive 6 ... narrow tube 11, 12 ... Buffered article 101, 102, 103 ... cushioning material 104, 105 ... cushioning material 112, 113, 114, 115 ... Cushioning material 116, 117, 118, 119 ... Buffer material

Claims (6)

[Claims] 1. A cushioning material formed by stacking corrugated cardboard materials including a flat plate and a corrugated plate, wherein at least one of the corrugated cardboard materials has a predetermined orientation structure for adjusting the cushioning characteristics of the cushioning material. A cushioning material, which is provided. 2. The orientation structure is composed of at least one cardboard material having a cutting surface that makes a positive angle of less than 90 degrees with a length direction of a thin tube formed by the corrugated plate. The cushioning material according to claim 1. 3. The orienting structure is configured by arranging the cardboard material such that the length direction of the thin tube of at least one of the cardboard materials is different from the length direction of the thin tubes of the other cardboard materials. The cushioning material according to claim 1 or 2, wherein 4. The cushioning material according to claim 1, wherein a notch is provided in a part of the cushioning material, and a part of the article to be cushioned is brought into contact with the notch to cushion the article. Cushioning material described in. 5. The method according to claim 1, wherein an oblique cutoff portion is provided on the cut surface of the cushioning material, and a part of the article to be cushioned is placed on the cutoff portion to cushion the article. The cushioning material according to any one of 3 above. 6. A combination of a cushioning material in which a cutout portion is provided in a part of the cushioning material and a cushioning material in which an oblique cut-off portion is provided in the cut surface of the cushioning material. The cushioning material according to any one of claims 1 to 3, which is characterized.