JPH06183462A - Packing buffer body and manufacture thereof - Google Patents

Abstract

PURPOSE:To facilitate improved adjustment of buffer effects by providing a three-dimensional member having a crest-valley-shaped uneven section and having partially a notch at the support of an item to be packed in a packing buffer body having a recess surrounding the whole or a part of the item to be packed. CONSTITUTION:A packing buffer body 21 comprises a box-like case member 22 provided with an opening 34 for engagement with an item to be packed and a crest-valley-shaped three-dimensional members 25 having an accordion shape for supporting, as a buffer, the item to be packed stored in the case 22. In each of the members 25, there is provided a three-dimensional notch 29 having a shape corresponding to the shape of both ends of the item to be packed. Such members 25 are put into the member 22 and flap-shaped supporters 35 connected to the member 22 are bent inwardly to assemble the body 21. Two packing buffer bodies 21 are disposed so that the openings 34 thereof are oppositely oriented to each other, and the opposite ends of the item are fitted into the notches 29 through the opening 34 to support the item in buffering relationship.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging cushion, and more specifically, by using a three-dimensional plate-shaped member having a ridge-valley-shaped concave-convex cross section as a support portion, an excellent cushioning effect and versatility for various packaging cushion shapes are combined. The present invention relates to a packaging cushion having the same.

[0002]

2. Description of the Related Art Conventionally, for example, electric washing machines, electric refrigerators, air conditioners, VTRs, stereo amplifiers and other home electric appliances,
Alternatively, a large amount of Styrofoam is used for packaging office equipment such as personal computers, fixed disks, printers, PPC copiers, etc. in order to prevent product damage during transportation. In addition, Styrofoam is easy to mold and process and has excellent cushioning properties.
It is often used for various purposes such as fruit packaging and optical machine packaging, and the amount used is increasing.

However, since the Styrofoam after use is bulky, it is difficult to treat it and, finally, most of it is incinerated in an incinerator. At this time, a large amount of heat is generated and black smoke is generated if the combustion conditions are bad. This is a problem in terms of environmental measures in combination with the lack of capacity of the incineration facilities of each local government.

For this reason, major electric manufacturers who use a large amount of Styrofoam have been trying to reduce the amount of Styrofoam used by reusing waste paper or using alternative materials such as paper such as corrugated board and pulp for environmental protection. Since it is disadvantageous in cost, it is still in the stage of exploration,
The reality is that the effect is not so great.

In view of these points, one of the inventors of the present invention has at least two prefabricated cushioning materials, such as corrugated cardboard, which are applied to the four corners of an object to be packaged (generally rectangular parallelepiped) in order to reduce styrofoam. Made using more than one layer of material,
In addition, it is thought that it should be possible to use it again and again to save resources and prevent pollution, and as a result of earnest research on the means, an invention relating to a triangular-pyramidal cushioning body was completed and a patent has already been applied for.

[0006] However, the triangular pyramid-shaped packaging cushion is extremely effective in supporting eight twills (corners) of a rectangular parallelepiped, but an amplifier, a tuner, a VTR, a thin air conditioner indoor / outdoor unit, and a CD. In order to support and protect thin products such as players, notebook type word processors or personal computers, and small LCD TVs at their four corners, it is necessary to use eight triangular pyramidal packing cushioning materials as in the case of a general rectangular parallelepiped. It turned out to be a little inefficient in terms of efficiency.

Therefore, in the case of these thin products, it is desirable to support the packaging with four packaging buffers, and it is necessary to devise a packaging buffer having a shape suitable for it.

Then, as a result of further research, an invention relating to a hollow triangular prismatic packing buffer body using the material such as corrugated cardboard, its material, and its manufacturing method and assembling method has been reached, and the invention has already been filed.

However, in the case of small products, it has been desired that the packaging buffer be used with a smaller number of packaging buffers, that is, two packaging buffers.

Therefore, for example, a box type "packing cushioning material" as proposed in Japanese Utility Model Laid-Open No. 4-45266 was developed (see FIG. 14).

This is a box-shaped paper case member 3 with one end open, and frame members 6 and 6 made of hollow L-shaped paper tubes.
And a side wall portion 7, 8, 9, 10 made of a paper rectangular tubular member and a reinforcing member 11, 11 for forming a paper packaging cushioning body having a recess for supporting an object to be packed.

However, in this case, the cushioning action is entirely hollow L.
Since it depends on the elasticity of the pattern paper tube or the rectangular tube-shaped member, there is a problem that the cushioning effect is slightly poor and that it is difficult to easily deal with the shape of various types of articles to be packaged. Further, this conventional product has a large number of parts and has a complicated structure, so that there is a problem that the number of assembling steps increases correspondingly and the cost also increases. In addition, the reinforcement of the rectangular tubular member is rather troublesome, and there is a problem that it lacks versatility.

Therefore, the inventors of the present invention provided a notch having a shape suitable for supporting an object to be packaged in one rectangular plate-shaped member, and formed this into a three-dimensional plate-shaped member having an accordion-shaped ridge-valley uneven cross section, for example. The inventors have found that the above problems can be solved by molding and applying, and as a result of earnest study, they have reached the present invention.

[0014]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a non-foamed polystyrene type cushioning body which has a high cushioning effect and is easily adapted to the outer shape of various articles to be packaged.

Further, the object of the present invention is that the cushioning effect can be easily adjusted without changing the basic structure, that is, the rigidity of the three-dimensional plate member can be easily adjusted, so that the package can be easily designed and manufactured according to the shape of the object to be packaged. To provide a buffer.

[0016]

According to the present invention, in a packaging cushion for fixing an article to be packaged, which is provided with a recess for enclosing all or part of the article to be packaged, a three-dimensional body for supporting the article to be packaged. A packaging cushioning body (claim 1) characterized in that the plate-shaped member has a mountain-valley-shaped concave-convex cross-section having a notch in a part thereof. And the packaging cushion according to claim 1 (claim 2), wherein at least the material for the three-dimensional plate member is a paperboard or a corrugated cardboard (claim 3). Development of mountain-valley-shaped three-dimensional plate-shaped member At least one notch is provided in the rectangular plate-shaped member, and then the rectangular plate-shaped member is bent in a zigzag pattern at 1/2 pitches (P) to contact the inner surface of the box-shaped case member. A method of manufacturing a packaging cushion that sticks or sticks, The number of mountain N, of the peak height (the depth of the valley)
Is H, the length of the ridge-valley solid plate member is L, and the length of the expanded rectangular plate member is S, with a notch according to the relational expression S = [L ² + (2NH) ² ] ^1/2. A method for manufacturing a packaging cushioning body (claim 4) is provided, which comprises preparing an expanded rectangular plate member.

The present invention will be described in detail below with reference to embodiments.

[0018]

1 is an exploded perspective view of an embodiment of the present invention, FIG. 2 is a perspective view showing a usage state of the embodiment, FIG. 3 is a sectional view of a three-dimensional plate member which is an essential part of the embodiment, and FIG. 5, FIG. 6 and FIG. 7 are cross-sectional views of a three-dimensional plate-shaped member that is a main part of another embodiment, FIG. 8 is a development view of a box-shaped case member of the embodiment, and FIG. 9 is a box-shaped case member of the same embodiment. FIG. 10 is a perspective view showing a semi-assembled state, FIG. 10 is a plan view of a development plate member which is a main part of the embodiment, FIG. 11 is a perspective view of a partially expanded three-dimensional plate member, and FIG. 12 is a three-dimensional plate member and a development plate. FIG. 13 is a perspective view showing a state of use of another embodiment, and FIG. 14 is a partial cross-sectional perspective view of a conventional example.

1, 2, 3, 4, 5, 6, 7, 8, 9,
In 10, 11, 12, and 13, 21 is a packaging cushion,
22 is a box-shaped case member, 23 is a developed box-shaped case member, 2
5 is a mountain-valley-shaped three-dimensional plate-shaped member, 26 is a developed rectangular plate-shaped member, 2
8 is a three-dimensional cutout of the plate member, 29 is a development cutout of the plate member,
Reference numeral 30 is a peak portion, 31 is a valley bottom portion, 34 is an opening portion of a box-shaped case member, 35, 36 and 37 are three-dimensional plate member support portions, 40.
Is the object to be packaged.

As shown in FIGS. 1 and 2, the packaging cushioning member 21 of the present invention is basically a box-shaped case member 22 into which an article 40 to be packaged is inserted, and is inserted inside to cushion the article to be packaged. The accordion is composed of a mountain-valley-shaped three-dimensional plate member 25. In general, the box-shaped case member 22 may or may not have the opening 34. That is, the box-shaped case member 22 may be anything as long as the three-dimensional plate member 25 can be packaged and fixed. For example, in the embodiment shown in FIG. 13, the pair of box-shaped members 22 is inserted into and fixed to the accordion-shaped three-dimensional plate-shaped member 25 in a coronal shape from above and below to complete the packaging cushion 21. Further, in the case of the present embodiment, the three-dimensional plate member 25 is provided with a plurality of three-dimensional notches 28, 28 ... These three-dimensional cutouts are formed as development cutouts 29 at the stage of the development plate member 26 (see FIGS. 10 and 11) according to the shape of both ends of the packaged object.

The bending pitch of the three-dimensional plate member 25 is determined in consideration of the weight of the packaged object, the expected impact load, and the like. That is, if the static load or dynamic load per unit area in the X, Y, and Z directions becomes too large, the three-dimensional plate member may buckle. Therefore, the expansion plate member 26 should have a sufficient safety factor in advance. The bending pitch and the shape of the notch are designed. The X, Y, and Z directions are as shown in FIGS. 1 and 3, and the Y direction (not shown) in FIG. 3 is perpendicular to the paper surface. The well-designed packaging cushioning body of the present invention has extremely high buckling strength as compared with the conventional example, and yet has an extremely large energy absorbing ability to withstand an impact load.

A cross-sectional view of a representative embodiment of the three-dimensional plate member 25, which is an essential part of the present invention, is shown in FIGS.

The one shown in FIG. 3 is the most general one and is the same as that shown in FIG. Since the bent shape of the ridges and valleys is symmetrical, it is the easiest to process and the pitch P can be easily adjusted. However, since the adhesion area of the peaks 30 and the valley bottoms 31 to the inner surface of the box-shaped case is small, the strength in the X direction is high. Tends to be slightly weak. In the case of FIG. 4, since the peaks 30 and the valley bottoms 31 are both flat, there is an advantage that a large adhesion area with the inner surface of the box-shaped case can be obtained, and even when the pitch P is large, X
The directional strength can be increased. The one shown in FIG. 5 is shown in FIGS.
It has an intermediate character, and is flat on only one side from the peak to the valley bottom, and the structure and performance are intermediate. The flat portions may be staggered, that is, the peaks may be flat, the peaks at the valley bottom may be flat, the valleys may be flat at the valley bottom, or the peaks may be flat at the peaks.

FIG. 6 shows a three-dimensional plate member having a cross section in which the pulse-like rising is vertical. Since this is flat in both mountains and valleys, the bonding area is large, but the rigidity in the diagonal direction (shear resistance) tends to be slightly poor. However, the compressive strength in the Z-axis direction does not decrease even if the pitch width is large.

The one shown in FIG. 7 has a substantially equilateral triangle cross section, and since both the peaks and valleys are flat, the bonding area can be wide, the rigidity in the diagonal direction can be high, and the strength in the Z direction can be expected considerably.

As described above, FIG. 8 is a developed view of the box-shaped case member, and FIG. 9 is a perspective view of the box-shaped case member being partially assembled.

The peaks and valleys (faces or lines) of the three-dimensional plate member 25 are abutted or fixed to the inner surface of the box-shaped case member 22 and have high strength and shock absorbing ability in the X, Y and Z directions as a whole. It becomes a packaging cushion. The opening 34 is formed so as to fit the shape of both ends of the object to be packaged. However, even if the object to be packaged is slightly larger or smaller, the opening of the three-dimensional plate absorbs it.

FIG. 10 is a plan view of the developed flat plate-like member 26, and FIG. 11 is a perspective view showing a state in which the member 26 is bent into a three-dimensional plate-like member 25.

In FIG. 10, the total length of the expansion plate member 26 is S, and 1/2 of the pitch P is K.

When the object to be packaged is an ellipsoid as shown in FIGS. 10 and 11, the expansion notch 29 has the largest central portion and becomes narrower toward the left and right.

FIG. 12 is a conversion diagram of a three-dimensional plate member and a developed plate member. In FIG. 12, ΔOAX, ΔXQY, Δ
Since YRZ, is an isosceles triangle, the line segment OA is the line segment AX
And the line segment OC is equal to the line segment CZ. Line segment CZ
Is equal to the line segment CF, S = line segment OA + line segment AX + line segment XQ + line segment QY + line segment Y
It becomes R + line segment RZ. Here, if the line segment FZ = T, N is the number of mountains, H
Is the height of the mountain, so T = 2NH. This is △ O
In BX, the height is 2H per 1N and ΔOF
Because Z and ΔOBX are similar. Then the line segment OZ
Is perpendicular to the line segment ZF, so S = [L ² + (2NH) ² ] ^1/2 is obtained from the Pythagorean theorem. Therefore, if the number N of peaks, the height H of the peaks, and the length L of the three-dimensional plate member are determined in advance, the length S of the expanded plate member can be calculated. From such a method and empirical data on impact strength, it is possible to prepare a developed rectangular plate-shaped member having appropriate specifications, and easily form a three-dimensional plate-shaped member, and thus the packaging cushioning body of the present invention. The plate-shaped member and the box-shaped case member are usually made of corrugated cardboard, but other members that retain their shape, such as paperboard,
It can also be plastic impregnated paperboard or plastic laminated paperboard.

[0032]

By carrying out the present invention, all of the above objects can be achieved.

That is, there is provided a non-foamed polystyrene type cushioning body which has a high cushioning effect and is easily adapted to the outer shape of various kinds of articles to be packaged. In addition, the cushioning effect can be easily adjusted without changing the basic structure, and the rigidity of the three-dimensional plate member can be easily adjusted, so that there is an effect that a packaging cushioning body that can be easily designed and manufactured according to the shape of the object to be packaged can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view showing a usage state of the embodiment.

FIG. 3 is a cross-sectional view of a three-dimensional plate member.

FIG. 4 is a sectional view of a solid plate member according to another embodiment.

FIG. 5 is a sectional view of a solid plate member according to another embodiment.

FIG. 6 is a sectional view of a solid plate member according to another embodiment.

FIG. 7 is a sectional view of a solid plate member according to another embodiment.

FIG. 8 is a development view of a box-shaped case member.

FIG. 9 is a perspective view showing a semi-assembled state of the box-shaped case member.

FIG. 10 is a plan view of a developed plate member.

FIG. 11 is a perspective view of a partially expanded three-dimensional plate member.

FIG. 12 is a conversion diagram of a three-dimensional plate member and a developed plate member.

FIG. 13 is a perspective view of another embodiment corresponding to FIG. 1.

FIG. 14 is a partial cross-sectional perspective view of a conventional example.

[Explanation of symbols]

 21 Packaging Buffer 22 Box-shaped Case Member 23 Deployment Box-shaped Case Member 24 Opening 25 Solid Plate Member 26 Deployment Plate Member 28 Solid Cutout 29 Deployment Cutout 30 Mountain Top 31 Valley Bottom

Claims (4)

[Claims] 1. A three-dimensional plate-shaped member for supporting an article to be packaged in a packaging shock absorber for fixing the article to be packaged inside, which is provided with a recess for enclosing all or part of the article to be packaged. A packaging cushioning body characterized in that it has a mountain-valley-like concave-convex cross section with a notch in part. 2. The packaging cushioning body according to claim 1, wherein the parallel portion of the concave-convex cross section of the three-dimensional plate member is perpendicular to or parallel to the longitudinal direction of the article to be packaged. 3. The packaging shock absorber according to claim 1, wherein at least the material for the three-dimensional plate member is paperboard or corrugated paper. 4. Development of a mountain-valley-shaped three-dimensional plate-shaped member At least one notch is provided in a rectangular plate-shaped member, and then the rectangular plate-shaped member is bent in a zigzag pattern at every 1/2 pitch (P) to form a box shape. A method for manufacturing a packaging shock absorber, which is in contact with or adheres to an inner surface of a case member, wherein N is the number of peaks, H is the height of the peaks (the depth of the valleys), and L is the length of the valley-shaped solid plate member. When the length of the expanded rectangular plate-shaped member is S, a packed cushioned expanded rectangular plate-shaped member is prepared according to the relational expression S = [L ² + (2NH) ² ] ^1/2. Body manufacturing method.