JP2000226074A - Shock absorbing material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a shock absorbing material to be used in storing and packaging a packaging item in a packaging box out of a complex cardboard as raw material, and to easily assemble the shock absorbing material and surely maintain it under the assembled state. SOLUTION: A shock absorbing material 11 is constituted such that a frame- like main body 16 having an opening 15 capable of being fitted and inserted into a packaging item is punched out and formed by a complex cardboard, for example, a honeycomb board 12, slits are formed at both sides of the opening 15 of the frame-like main body 16, cut and raised to form shock absorbing sections 17, 18, and engaging protrusion edges 17a, 17b and 18c, 18b acting as bent-back preventing portions are arranged at both sides of roots of the shock absorbing sections 17, 18. The shock absorbing sections 17, 18 are held such that the engaging protrusion edges 17a, 17b and 18a, 18b at the root sections while being cut and raised against the frame-like main body 16 are abutted against the edge surface of the opening 15 to prevent their folding-back states and the opening 15 is held in its released state. With such an arrangement as above, the shock absorbing material 11 can be fitted, inserted and arranged easily and surely for the packaging item.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning material which is used when storing an object to be packaged in a packaging box.

[0002]

2. Description of the Related Art Conventionally, foamed plastic moldings have been used for packaging materials for products such as electric appliances such as televisions, video tape recorders and cassette tape recorders, food trays and fish boxes. Since this foamed plastic is an excellent cushioning material, it is particularly suitable for a packaging material for electric equipment and the like. For example, as shown in FIG. 10, when a product M such as an electric device is stored and packaged in a packaging box B, the cushioning material 1 formed of foamed plastic is provided at the upper and lower surfaces of both ends of the product and at both corners from both sides. To cover.

The cushioning material 1 has a frame shape having an opening 2 into which both ends of the product M are inserted, and fitting portions 3 and 4 into which both corners on the end face side of the product M are fitted on both sides. Since the fitting portions 3 and 4 are formed in a block shape, cutout concave portions 3a and 4a for elasticity adjustment are formed.

[0004] By fitting the cushioning material 1 thus configured to both ends of the product M and storing the cushioning material 1 in the packaging box B, the cushioning material 1 is connected between the outer surface of the product M and the inner surface of the packaging box B. The product M is packaged by the packaging box B with the interposition therebetween. As a result, the shock applied to the packaging box B due to a fall accident during transportation or the like is absorbed by the cushioning material 1, and the product M is protected.

However, foamed plastic molded articles as cushioning materials for packaging and the like cause various problems in disposal after use. In other words, when incinerating foam plastic, the incinerator is damaged because it generates high heat during combustion,
Also, incinerated smoke may cause pollution. Also,
When the foamed plastic is directly embedded in the soil for disposal, the foamed plastic remains in the soil without being decomposed and soiled. For this reason, the use of a large amount of foamed plastic molded articles has become an issue as the disposal method is becoming more environmentally friendly and resource saving on a global scale.

In recent years, in view of such environmental problems and effective use of resources, there has been a demand for the development of non-polluting and resource-saving packaging cushioning materials as alternatives to foamed plastics. Buffer materials made from corn starch and the like are increasing.

[0007] As described above, composite paperboard is used as a cushioning material made of paper. The composite paperboard is formed by bonding kraft paper into a honeycomb structure and bonding liner paper to both ends. Formed honeycomb board,
A corrugated cardboard formed by laminating liner paper on both sides of a corrugated core paperboard is used.

[0008]

However, the composite paperboard as a cushioning material made of paper has a small thickness, does not have sufficient strength to hold heavy articles, and has a small cushioning property. Heavy articles and fragile articles have a problem in use. For example, the cushioning properties of electrical equipment such as video tape recorders and audio equipment having a weight of several kg or more have not been satisfied.

In particular, when a cushioning material is formed of corrugated paperboard, it is necessary to assemble the cushioning material into a required shape, which requires man-hours for both the design and packaging operations, and increases the cost.

[0010] The present invention has been made in view of the above, and an object of the present invention is to provide a cushioning material formed of composite paperboard so as to have a necessary cushioning property.

[0011]

According to the present invention, there is provided a cushioning material according to the present invention, wherein a notch is formed in a frame-shaped main body formed of composite paperboard to form a cut-and-raise portion. It is configured such that a turn-back preventing portion is provided at the base portion.

Further, the cushioning material according to the present invention has a structure in which at least a notch portion for strength adjustment is provided in at least the frame-shaped main body.

In the cushioning material according to the present invention, the relief portion is formed with a relief portion of the member in the above-described configuration.

Further, in the cushioning material according to the present invention, in the above-described structure, corrugated paper is used as the composite paperboard, and the frame-shaped main body is formed by corrugated paper with the eye direction set obliquely.

In the cushioning material according to the present invention configured as described above, the cut-and-raised buffer provided on the frame-shaped main body is cut and raised with respect to the frame-shaped main body by the folding back prevention portion of the original part. Folding is prevented, and the frame-shaped main body can be smoothly inserted and arranged at a required portion of the product as the packaged object.

Further, the cushioning material can be stably held and held in accordance with the weight of the product by providing a notch portion for adjusting the strength in the frame-shaped main body. By forming, the member projected to the product can be inserted and arranged in the product without hindrance, and the projecting member of the product is protected.

Further, by forming the frame-shaped main body of the cushioning material with corrugated cardboard as a composite paperboard with the eyes set at an oblique direction, the stress as a cushion can be made uniform for a product as a hexahedral package. Can be planned.

[0018]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS.

In this embodiment, as a packaged body, for example, a cushioning material used for wrapping a product such as an electric device is configured.

In this embodiment, a composite paperboard is used as a raw material of the cushioning material. As the composite paper, for example, a honeycomb board or a laminated cardboard can be used.

The cushioning material 11 shown in FIGS. 1 to 5 employs a honeycomb board 12 as a composite paperboard of a raw material, and is formed by the honeycomb board 12. The honeycomb board 12 needs to have a certain thickness, that is, a required thickness, and this thickness is related to an area in contact with a product for properly cushioning the product.

For this reason, the raw material, that is, the honeycomb board 12 as a raw material, is formed by forming a honeycomb-shaped core material 13 to a required thickness, and bonding liner paper 14 to both end surfaces of the core material 13. ing. The cushioning material 11 is punched and formed by a die of a press machine by the raw material of the honeycomb board 12.

As described above, the cushioning material 11 is formed by punching the liner paper 14 of the honeycomb board 12 having a required thickness from the vertical direction, and the opening 1 into which the product is inserted.
5 is formed on both sides of the opening 15 in the frame-shaped main body 16, and a required thickness, for example, a portion 14 a having a thickness of about 2 mm is cut and raised on the outer surface of the opposite side end surfaces of the opening 15. The buffer portions 17 and 18 are formed at the base portions of the buffer portions 17 and 18 in a state where the buffer portions 17 and 18 are left uncut on the outer surface side of the frame-shaped main body 16 and cut and raised in a right angle direction about the portion 14a as an axis. Engagement protruding edge portions 17a as blocking portions that abut against the outer surface side edge surface portion of opening 15 to prevent folding back,
17b and 18a, 18b are formed. The cushioning material 11 is prevented from falling down into the opening 15 with the cushioning portions 17 and 18 cut and raised in a direction perpendicular to the outer surface side of the frame-shaped main body 16, and the entire inner surface side of the opening 15 is opened. Shape.

As a result, the cushioning material 11 is
Is formed as a side cushion having buffer portions 17 and 18 straddling both side portions of the opening 15 on one end surface side, that is, on the outer surface side. Notches 16a, 17c and 18c for adjusting hardness are provided on the outer peripheral portion of the frame-shaped main body 16 of the cushioning material 11 and the outer end surfaces of the cushioning portions 17 and 18.
Are formed.

When the product M as a packaged object is to be packaged, the cushioning material 11 formed as described above fits the frame-shaped main body 16 at both ends of the product M from the inner side of the opening 15 as shown in FIG. Then, the inner end surfaces of the buffer portions 17 and 18 are placed in contact with the end surfaces of the product M. In this way, the cushioning material 11 is
When the frame-shaped main body 16 is inserted into the end of the product M, the buffer portions 17 and 18 are held in a state where the buffer portions 17 and 18 are cut and raised in a direction perpendicular to the outer surface side of the frame-shaped main body 16. Thus, the opening 15 is entirely open on the inner surface side, so that the product M can be inserted and inserted into the end portion without any trouble, and the end surface of the product M is stably and reliably connected to the inner end surfaces of the buffer portions 17 and 18. Contacted.

By storing the product M in which the cushioning material 11 is inserted and arranged at both ends in the packaging box B in this manner, the cushioning material 11 is formed on the outer peripheral surface of the frame-shaped main body 16 and the cushioning portions 17 and 18.
Is in contact with the inner side of the packaging box B, and is interposed between the product M and the packaging box B so that the product M is held in the packaging box B with a buffering effect.

Next, a case in which the cushioning material 11 configured as described above is formed by the honeycomb board 12 will be described with reference to FIGS.

The honeycomb board 12 shown in FIGS.
In the core material 13 having a honeycomb structure, a portion in the thickness direction, that is, almost half of the eye direction is formed as an elastic portion 13a, and both ends of the core material 13 in the eye direction (the direction of the arrow N in FIGS. 3 and 4). A liner paper 14 is attached to the surface to form
1 is formed by punching the honeycomb board 12 as a raw material using a die of a press machine.

That is, as shown in FIG.
Of the opening 15 which is the outer peripheral shape and the inner peripheral shape of the frame-shaped main body 16 and the buffer portions 17, 1 located on both sides of the opening 15.
Punch into 8 shapes. This punching is performed by punching from the back side in FIG. 2, and the buffer portions 17 and 18 are formed such that the portions on both side edge surfaces of the opening 15 have a required thickness on the outer surface side, for example, about 2 mm thick. 14 is left uncut, and both end sides of the uncut portion 14a are tapered out from the width of the opening 15 and punched out to form engaging edges 17a, 17b and 18a and 18b as folding-back preventing portions. . Notch portions 17c and 18c for adjusting hardness are also punched out at the same time on the outer peripheral portion of the frame-shaped main body 16 and the outer end surfaces of the buffer portions 17 and 18.

In this way, the cushioning material 11 is formed by flat punching out of the honeycomb board 12 as shown in FIG. In this state, the cushioning material 11 is flat and has only the thickness of the honeycomb board 12, so that the cushioning material 11 can be stored without being bulky even when stacked, and can be easily transported to the packaging site.

To use the cushioning material 11,
The buffer portions 17 and 18 are pushed outward from the opening 15 about the uncut portion 14a of the liner paper 14 on the outer surface as an axis and bent at right angles to the outer surface, thereby engaging as shown in FIG. Edges 17a, 17b and 18a, 18
b slides while pressing on the inner surface of the opening 15 and protrudes to the outer surface side, abuts the outer surface side edge on both sides of the opening 15, and the buffer portions 17 and 18 are cut while straddling the opening 15. It is arranged in an upright manner and is held without returning to its original state, that is, without being folded.

As a result, as shown in FIG.
The inside of the opening 15 is entirely open, and the buffer portions 17 and 18 project from the outer surface side of the frame-shaped main body 16 to assemble the buffer material 11 that is inserted and arranged at both ends of the product M as described above. . This assembled cushioning material 11
Is inserted into the product M as described above.

The cushioning material 11 constructed as described above
The thickness and the contact area for properly buffering the product can be calculated by the following equations.

T = C · H / G T: Thickness of cushion (cushioning material) C: Buffering coefficient H: Drop height of specimen (product) G: Allowable impact value of specimen (product) A = W / δs A: Contact area of cushion W: Weight of sample (product) δs: Static stress of cushioning material

In this equation, the buffer coefficient C, the drop height H of the sample (product), the allowable impact value G of the sample (product), the weight W of the sample (product), and the static Since the stress δs can be generally confirmed in advance, the thickness T of the cushion (buffer) and the contact area A of the cushion (buffer) can be obtained.

Accordingly, in the cushioning material 11 shown in FIGS. 2 to 4, the dimension a is the thickness of the cushioning part after assembly, the dimension b is the width of the cushioning part, and the dimension c is the cushioning material. The contact area of the cushioning material 11 can be obtained by multiplying the dimension b and the dimension c because the thickness is the thickness of the raw material. If the cushioning material is thin, the shape of the contact area becomes elongated and unstable after assembling, which causes buckling, which is not suitable for the cushioning material of this embodiment.

Next, another embodiment of the present invention will be described with reference to FIGS. 6 to 9. The cushioning material 21 of the embodiment shown in FIGS. 6 to 9 uses a laminated cardboard 22 as a raw material. And is formed by the laminated cardboard 22.

The laminated corrugated cardboard 22 is made of a corrugated core plate 2.
3 is a corrugated cardboard 25 formed by laminating paperboard 24 on both sides.
Are formed by superposing a plurality of them. The laminated corrugated board 22 of this embodiment is formed by laminating and bonding a required number of corrugated boards 25 with a starch-based adhesive.

Then, the cushioning material 21 is stamped and formed from the raw material of the laminated cardboard 22 by a die of a press machine. In the cushioning material 21 formed by the laminated corrugated cardboard 22 in this manner, since the laminated corrugated cardboard 22 overlaps the corrugated cardboard 25 many times, the buffering direction is the eye direction, that is, the direction orthogonal to the corrugated direction of the core plate 23. If so, it can handle quite heavy objects.

As described above, the cushioning material 21 formed by the laminated cardboard 22 is also formed by punching the cardboard 24 of the laminated cardboard 22 from the vertical direction in the same manner as the cushioning material 11 molded by the honeycomb board 12 described above. Things. That is, the cushioning material 21 is located on both sides of the opening 26 in the frame-shaped main body 27 in which the opening 26 into which the product is inserted is formed. The buffer portions 28 and 29 are formed by cutting in such a manner that the buffer portions 28 and 29 are formed at the bases of the buffer portions 28 and 29 in a state in which the buffer portions 28 and 29 are cut and raised at right angles to the outer surface side of the frame-shaped main body 27. Engaging edges 28a, 28b and 29a, 29b are formed as folding-back preventing portions that abut against the edge of the opening 26. The cushioning member 21 has a structure in which the cushioning portions 28 and 29 are
Of the opening 26 is held in a state of straddling both sides of the opening 26, and is prevented from turning back into the opening 26, so that the inner surface of the opening 26 is entirely open. .

As a result, the cushioning material 21 is
Is formed as a side cushion having buffer portions 28 and 29 straddling both sides of the opening 26 on one end side, that is, on the outer surface side. The frame-shaped main body 27 of the cushioning material 21
Notched portions 27a, 28c, and 29c for adjusting hardness are also formed on the outer peripheral portion of each of the above and outer end surfaces of the buffer portions 28 and 29.

When a member is projected on the peripheral surface of a product using the cushioning material 21 as a side cushion, the inner peripheral surface of the frame-shaped main body 27, that is, the opening 26 corresponds to the projected member. Of the inner surface and cushioning bodies 28, 2
A relief recess is formed on the inner end surface side of 9.

As described above, the cushioning material 21 of the present embodiment formed by the laminated cardboard 22 is also the same as the cushioning material 1 described above.
9, the frame-shaped main body 27 is inserted into both ends of the product M from the inside of the opened opening 26, and the inner end faces of the cushioning bodies 28 and 29 are arranged in contact with the end faces. In the case shown in FIG. 9, the legs I are protruded on the lower surface side of the product M, and members such as the display panel P and the dial knob D protrude from the end surface side.
These protruding members are escaped and fitted.

That is, groove-shaped relief recesses 27b and 27c are formed on the lower surface side of the opening 26 which is the inner peripheral portion of the frame-shaped main body 27 of the cushioning material 21 so as to correspond to the legs I of the product M. Relief recesses 28d and 29d are formed on the inner end surfaces of the buffer portions 28 and 29 on the side to which P and the dial knob D correspond, so that the cushioning material 21 does not hinder the protruding portion with respect to the product M. The protrusions are inserted so as to protect them, and the inner surface of the opening 26, which is the inner periphery of the frame-shaped main body 27, and the inner end surfaces of the buffers 28, 29 are stably abutted against the peripheral surface and the end surface of the product M. You. In the case where the relief recesses 27b, 27c, 28d, 29d, etc. are too large in the cushioning material 21 and the contact area with the product M is impaired, the thickness of the laminated cardboard 22, which is the raw material, should be increased as much as possible. I just need.

The product M in which the cushioning material 21 is inserted and arranged at both ends as described above is stored in the packaging box. Thus, the product M
Is stored in the packaging box, so that the cushioning material 21 is provided on the inner surface side of the packaging box with the outer peripheral surface of the frame-shaped main body 27 and the cushioning bodies 28, 29.
Are in contact with each other and are interposed between the product M and the packaging box, and the product M is held in the packaging box with a buffering effect. In this case, the cushioning material 21 is oriented in the direction of the eyes of the laminated corrugated cardboard 22 which is the raw material of the cushioning material 21, that is, the direction orthogonal to the corrugated direction of the corrugated core plate 23 of the corrugated cardboard 25 is the vertical direction of the product M. Therefore, even if the product M has a considerable weight, it can be handled.

As described above, the cushioning material 21 made of the laminated corrugated cardboard 22 can cope with a considerably heavy object in the eye direction, but the direction opposite to the eye direction, that is, the corrugated core plate of the corrugated cardboard 25 is used. Since the stress is very different from the eye direction in the corrugated direction 23, it is necessary to adjust the contact area with the product because the stress is small.

As described above, in the cushioning material using the laminated corrugated cardboard 22 as the raw material, it is necessary to equalize the extreme stress difference between the eye direction and the direction opposite to the eye direction. However, since corrugated cardboard has a unidirectional direction in which the eye direction is vertical or parallel, when a cushioning material is used as a cushion for a hexahedral product, it must act in the direction opposite to the eye direction.

Therefore, when the cushioning material is formed by inclining the stitch direction of the composite cardboard such as the laminated corrugated cardboard and the honeycomb board by 45 degrees, the stitch directions of the cushioning material are all inclined by 45 degrees. The cushioning material thus prepared can achieve a uniform stress as a cushion for a hexahedral product, but requires preconditions because it differs from the stress or strength of the laminated cardboard as the original composite paperboard.

As described above, in preparing the cushioning material 21
Is required when using laminated cardboard 22 as composite paperboard.
As shown in FIG. 7, the required amount of corrugated
The outline L is slanted with respect to the eye direction N.
8 and the corrugated cardboard sheet 25 as shown in FIG.
Outline L is slanted with the required size
There is a method of cutting and cutting vertically as usual.
The efficiency of the number is better in the latter case. In FIG.
The outline L is an outline assuming that two cushioning materials 21 are taken.
It is a set of trines. In this case, the loss rate of the raw
However, the cushioning material 21 is frequently taken as one piece and two pieces are taken.
Outline L from the broken part 25a ₁As shown
To reduce the loss, in this case, cushioning material
The smaller the number 21, the more effective the number.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and can be variously modified without departing from the gist of the present invention.

For example, the shape of the cushioning material can be arbitrarily changed depending on the shape of the product to be packaged, and the thickness can be increased or decreased according to the weight or shape of the buffering portion of the product. Further, the shape of the core material of the composite paperboard as the raw material of the cushioning material and the like can be formed into any shape without being limited to the illustrated one.

The cushioning material according to the present invention can be applied to packaging of various products without being limited to electric equipment as a package.

[0053]

As described above, in the cushioning material according to the present invention, a notch is formed in a frame-shaped main body formed of composite paperboard to form a cut-and-raise buffer portion. With this configuration, the cut-and-raised cushioning portion is prevented from being folded when the cut-and-raised portion is cut and raised with respect to the frame-shaped main body, and the frame-shaped main body is smoothly and reliably fitted and disposed at a required portion of the packaged object. It is possible to stably buffer and hold the packaged object.

When the cushioning material is not used, the cushioning portion can be cut and raised, folded back into the frame-shaped main body to have a flat shape, and raised up with respect to the frame-shaped main body at the packaging site to be easily assembled. As a result, the stock can be kept at the original thickness, the loading efficiency can be greatly improved, and the cost can be reduced.

Further, the cushioning material of the present invention can stably hold the buffer according to the weight of the packaged object by providing the notch for strength adjustment in the frame-shaped main body. By forming the relief portion of the member, the member protruding from the packaged object can be inserted and arranged in the packaged object without hindrance, and the projecting member is protected.

Further, the cushioning material is formed by forming the frame-shaped main body from corrugated cardboard as a composite paperboard with the eye direction set to be oblique, so as to equalize the stress as a cushion to the hexahedral package. You can do it.

Since the cushioning material of the present invention is made of composite paperboard, recycled paper can be used, and it is possible to sufficiently cope with environmental problems and reduce costs as compared with conventional foamed plastics.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of a cushioning material according to the present invention.

FIG. 2 is a plan view showing a state in which a cushioning material according to the present invention is punched from a composite paperboard stock.

FIG. 3 is a sectional view taken along line XX in FIG. 2;

FIG. 4 is a central longitudinal sectional view of the cushioning material shown in FIG.

FIG. 5 is a perspective view showing a use state of the cushioning material shown in FIG. 1;

FIG. 6 is a perspective view of another example of the cushioning material according to the present invention.

FIG. 7 is a diagram illustrating an example of a punching pattern of the composite material of the cushioning material according to the present invention.

FIG. 8 is a punching pattern diagram of another example of a composite material of a cushioning material according to the present invention.

FIG. 9 is a perspective view showing a use state of another example of the cushioning material according to the present invention.

FIG. 10 is a perspective view showing a use state of a cushioning material formed of a conventional foamed plastic.

[Explanation of symbols]

11 ‥‥ cushioning material, 12 ‥‥ honeycomb board, 13 ‥‥ core material, 14 ‥‥ liner paper, 15 ‥‥ opening, 16 ‥‥ frame body, 17, 18 ‥‥ cushioning portion, 17a, 17b, 18
a, 18b {engagement projections, 16a, 17c, 18c}
‥ Notch, 21 ‥‥ cushioning material, 22 ‥‥ laminated cardboard,
23 ‥‥ core board, 24 ‥‥ paperboard, 25 ‥‥ cardboard, 2
6 ‥‥ opening, 27 ‥‥ frame-shaped body, 28, 29 ‥‥ buffer, 28a, 28b, 29a, 29b ‥‥ engagement projection,
27a, 28c, 29c Notch, 27b, 27
c, 28d, 29d {Escape recess, M} product, B}
Packaging box

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasuhiro Suda 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F-term (reference) 3E060 BC02 EA07 EA12 EA13 EA17 3E066 AA03 CA04 DA04 KA08 NA01 NA08 NA09 NA51 NA55

Claims (4)

[Claims] 1. A cushioning material characterized in that a notch is formed in a frame-shaped main body formed of composite paperboard to form a cut-and-raise buffer portion, and a folding-back preventing portion is provided at the base of the buffer portion. 2. The cushioning material according to claim 1, wherein a notch portion for adjusting strength is provided in at least the frame-shaped main body. 3. The cushioning material according to claim 1, wherein a relief portion of a member is formed in the cut-and-raised cushioning portion. 4. The cushioning material according to claim 1, wherein corrugated paper is used as the composite paperboard, and the frame-shaped main body is formed of the corrugated cardboard with an oblique direction set. .