JPH0761476A - Cushioning material made of pulp mold - Google Patents

Abstract

PURPOSE:To provide a cushioning material which has a cushioning property and can meet the shape of an article by a method wherein a required stereoscopic structure is formed by previously extending it into an appropriate planar structure, and at the time of usage, the planar structure is built up into the required stereoscopic structure by bending specified parts. CONSTITUTION:Right and left lower cushioning materials 1 for, e.g. a television is formed into a shape for which a side surface plate 10, front surface plate 11 and bottom plate 12 are extended, by a widely known pulp mold device. Then, the cushioning material 1 which is formed into such a shape is bent at 90 deg. to the surface side at bending parts 13a, 13b, and thus, the cushioning material 1 made of a pulp mold with a required stereoscopic structure can be obtained. The obtained cushioning materials are arranged at respective corners of the television, and stores in a corrugated fiberboard box. Thus, the cushioning material is formed into an extended planar structure, and then formed into a stereoscopic structure by bending at the bending parts 13a, 13b, and even a cushioning material with a complicated shape can be easily formed. At the same time, the whole surface which bears the television can be made to have a cushioning property as a cushioning structure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention intervenes between a packaging container and an item to support the item when the item is housed in a packaging container such as a corrugated cardboard box and buffers external force to protect the item. The present invention relates to a pulp mold cushion material.

[0002]

2. Description of the Related Art Conventionally, foamed resins such as polystyrene foam have been widely used as cushioning materials for packaging electronic devices such as televisions and stereo components. The reason why this polystyrene foam is widely used as a cushion material is that it is easy to mold and can be manufactured at low cost, and that the material itself has a large cushioning property. The polystyrene foam as the cushion material is formed into an appropriate shape and is interposed in the gap between the product and the packaging container, thereby fixing the product in the packaging container so as not to move and buffering the external force applied. Prevent damage to the item.

As described above, polystyrene foam has excellent characteristics as a cushioning material for packaging. On the other hand, however, environmental problems have occurred in the processing after the product is taken out from the packaging container. That is, the polystyrene foam as the cushioning material is required while the product is put in the packaging container, and when the product is taken out from the packaging container, it is usually unnecessary together with the packaging container because it is not necessary thereafter. Will be discarded.

However, polystyrene foam has a property that it has great weather resistance and does not easily change due to natural actions such as sunlight, wind and rain, cold and warm, dry and wet. Therefore, even if it is left outdoors for a long period of time, polystyrene foam retains its original form without melting, and it will remain as dust for many hours, which will destroy the natural environment. .

Therefore, in recent years, from the viewpoint of protecting the natural environment and the like, a pulp molding material which is easily dissolved in water or the like has been used as a cushion material instead of the polystyrene foam. This pulp mold material is
It is made on the same principle as paper making. That is, by immersing the mold material in the pulp liquid in which the pulp material is melted, sucking the pulp material by vacuum to adhere it to the surface of the mold material, and then sucking the mold adhered to the surface of the mold material with vacuum and peeling it off. A pulp mold material as a cushion material having a predetermined shape can be obtained.

[0006]

However, in the conventional pulp mold cushioning material as described above, unlike the polystyrene foam, the cushioning property of the material itself is extremely small, and the material itself has a structure capable of absorbing an external force. Therefore, it is necessary to provide cushioning properties by the shape of the cushioning material (for example, making holes or providing notches). There was a problem that the structure could not be molded and a cushioning cushion made of pulp mold could not be obtained.

Furthermore, the mold release depth (height of the unevenness of the cushion material) cannot be made sufficiently large, and when the molded cushion material is peeled from the mold material, it can be peeled only in one direction. However, there is also a problem that it is difficult to manufacture a cushion material that complies with the shape of the product because it is difficult to mold the complicated cushion material.

It should be noted that in the conventional cushioning material made of pulp mold, even if the articles to be packaged do not need to consider impact resistance, or even if impact resistance needs to be considered. Many of the values were not severe, and little consideration was given to the buffering property of the product. Therefore, there are many difficulties in providing a cushioning property depending on the shape of the cushion material to obtain a predetermined impact resistance.

That is, since the pulp mold material has almost no buffer capacity, the thickness of the material and the shape and size of the hole are required to obtain a certain cushion capacity as the cushion material. It is necessary to experimentally find the shape and size of the ribs by repeating strength experiments and to determine the shape and size of the entire cushion material. Therefore, there is also a problem that a long examination period is required to determine the final shape and the like of the required pulp mold cushioning material and to use the shape and the like as an actual cushioning material. .

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a cushion-made cushioning material made of pulp mold which has a cushioning property and conforms to the shape of the product. .

[0011]

The cushioning material made of pulp mold of the present invention is required in order to solve the above-mentioned problems and to achieve the above-mentioned object, for example, as shown in FIGS. It is characterized in that the three-dimensional structure is developed into an appropriate planar structure in advance and molded, and a predetermined portion is bent at the time of use to obtain a required three-dimensional structure.

The pulp mold cushioning material of the present invention is preferably structured, for example, as shown in FIGS. 1 to 3, to provide reinforcing concave and convex portions 17 and 20 on the flat surface portion of the three-dimensional structure.

The pulp mold cushion material of the present invention, as shown in FIGS. 4 to 5, for example, has a swelling portion 30a having a buffering property of a certain size for supporting an article A to be accommodated. , 30b are provided, and these bulging portions 30
The feature is that the impact force applied to the item A by a and 30b is buffered.

In the pulp mold cushion material of the present invention, for example, as shown in FIG. 6, the bulging portions may have hemispherical shapes 30a and 30b.

Further, in the pulp-molded cushioning material of the present invention, for example, as shown in FIG. 7, the bulging portion can have a truncated cone shape 38.

Furthermore, in the pulp-molded cushioning material of the present invention, for example, as shown in FIG. 8, the bulging portion may have a conical shape 39.

[0017]

According to the present invention, the pulp mold cushion material, which has been constructed as described above by being developed into an appropriate planar structure and molded in advance, has a predetermined three-dimensional structure formed by bending a predetermined portion at the time of use. A cushioning material made of pulp mold having a cushioning property suitable for the shape of the product is obtained, and the impact force can be buffered to enhance the degree of protection of the product.

The strength of the flat portion of the three-dimensional structure can be increased by the reinforcing uneven portion.

Further, by supporting the article with a plurality of bulging portions having a certain size of cushioning property, the impact force applied to the article can be buffered and the degree of protection of the article can be enhanced.

When the shape of the bulging portion is hemispherical, the impact force input to the apex is evenly distributed over the entire hemispherical surface, so that a large impact force can be endured. A good cushioning property is obtained.

Further, when the shape of the bulging portion is frustoconical, the article can be supported in a wide area and the impact force can be prevented from locally acting on the article.

Furthermore, when the shape of the bulging portion is conical, the product can be supported in a small area, and the impact force can be locally applied to the product.

[0023]

EXAMPLES Examples of the pulp-molded cushioning material of the present invention will be described below with reference to FIGS. Figure 1
3 shows an embodiment of the present invention, which is applied as a cushion material for a television which is an electronic device.

As shown in FIG. 3, the television A has a front cabinet a that covers the outside of the screen portion of the cathode ray tube and a rear cabinet b that covers the outside of the electrode portion of the cathode ray tube. These front cabinets a
Both the rear cabinet b and the rear cabinet b have a rectangular box shape, but the rear cabinet b is formed smaller than the front cabinet a, and a step c is formed between both cabinets a and b.
Is set. The television A is a cushion-molded cushioning material of the present invention, and each of the cushioning materials 1 is a lower right cushion material 1, a lower left cushion material 2, an upper right cushion material 3, and an upper left cushion material 4. Are stored in the cardboard box 5 via

FIG. 1 is an enlarged perspective view of the lower right cushion material 1 shown in FIG. The lower right cushion material 1 includes a side plate 10 that extends in the front-rear direction, a front plate 11 that continuously extends to the front part of the side plate 10, and a bottom plate that continuously extends to one side of the side plate 10. The bent portions 13a and 13b are formed in the respective continuous portions so as to be easily bent by setting the strength to be weaker, for example, by making the thickness thinner than the other portions. As the bent portions 13a and 13b, in addition to this embodiment, for example, slit grooves such as perforations may be intermittently provided, and other known means can be applied.

The side surface plate 10 has a rear surface bulging portion 14 which continuously bulges toward the front surface side to the rear portion, and a rib-like side surface protrusion which continuously projects to the rear surface side from the side portion opposite to the bottom surface plate 12. And a strip portion 15. The rear surface bulging portion 14 is arranged in a step c between the front cabinet a and the rear cabinet b, and its rear end surface is brought into contact with the back plate 5c of the corrugated cardboard box 5 so that the rear surface of the television A and the corrugated cardboard box 5 are connected. Back plate 5c
The distance between and is kept constant. In addition, the side projection 15
Also has the meaning of reinforcing the side plate 10, but in addition to this, the side surface of the television A and the right side plate 5 of the cardboard box 5 are also included.
It also serves as a spacer for keeping a constant distance from b.

Further, the side surface plate 10 is provided with a concave portion 16 which is a side portion opposite to the bottom surface plate 12 and which bulges toward the back surface side and is continuous in the longitudinal direction. An X-shaped reinforcing groove 17 showing a specific example of the uneven portion is formed. The reinforcing groove 17 is formed so as to bulge to the back side, and the reinforcing groove 17 and the concave portion 16 improve the strength of the side plate 10.

The front plate 11 has a front bulge portion 18 which bulges toward the front surface and is formed so as to face the rear bulge portion 14 in the front-rear direction. The front bulging portion 18 provided on the front plate 11 has the meaning of reinforcing the front plate 11,
At the same time, it also serves as a spacer for keeping the distance between the front surface of the television A and the front plate 5a of the cardboard box 5 constant.

Further, the bottom plate 12 has a rib-shaped bottom protrusion 19 which is continuous with the side opposite to the side plate 10 and projects to the back side. The bottom surface projections 19 serve as spacers for keeping the distance between the bottom surface of the television A and the bottom plate of the cardboard box 5 constant. Further, on the flat surface portion of the bottom plate 12, there are formed an X-shaped reinforcing groove 20 which is an uneven portion for reinforcement similar to the above-mentioned reinforcing groove 17, and a bottom surface concave portion 21 which bulges to the back surface side. The reinforcing groove 20 and the bottom surface recessed portion 21 improve the strength of the bottom plate 12.

The lower right cushion material 1 has the above-mentioned structure, but the left lower cushion material 2 is formed symmetrically with this. Therefore, the lower left cushion material 2
The same reference numerals as those of the lower right cushion material 1 are attached to the respective parts. 5 d is a left side plate of the cardboard box 5.

Further, the upper right cushion material 3 and the upper left cushion material 4 are formed symmetrically. The left and right upper cushion members 3 and 4 are composed of an upper surface plate 23, a side surface plate 24, and a front surface plate 25, respectively.
26b is formed.

The upper surface plates 23 of the left and right upper cushion members 3 and 4 are each formed with an upper surface bulging portion 27 projecting to the rear surface side. It is arranged in the section c. Further, the front plate 25 is formed with a front bulging portion projecting to the back side, and the front bulging portion keeps a constant distance between the front surface of the television A and the front plate 5a of the cardboard box 5. Acts as a spacer for. In addition, B shown in FIG. 3 is a vinyl cover of the television A.

The left and right lower cushion members 1 and 2 having the above-described structure are formed by expanding the side plate 10, the front plate 11 and the bottom plate 12 as shown in FIG. Includes a top plate 23, a side plate 24, and a front plate 2.
In a state where 5 and 5 are unfolded), they are molded by a known pulp molding device. Then, as shown in FIG. 2, the cushion member formed in the shape as shown in FIG.
Cushion material 1 made of pulp mold having a required three-dimensional structure by bending 90 degrees to the surface side at a and 13b.
4 is obtained.

Each cushion material 1 thus obtained
3 to 4, as shown in FIG.
Place it in the corresponding corner of the cardboard box 5 in this state
To store. As a result, the television A can be reliably stored inside the cardboard box 5 via the four cushion members 1 to 4.

In this case, the television A is positioned at a predetermined position by the four cushion members 1 to 4, and four cushions are provided between the entire surface of the television A and each surface of the cardboard box 5. Predetermined gaps are secured by the materials 1 to 4, respectively. Moreover, after the cushion material is expanded into a planar structure and molded, the bent portions 13a and 13b are bent.
By bending with 3 to form a three-dimensional structure, even a cushion material having a complicated shape can be easily formed, and all of the surfaces that receive the television A can be provided with a cushioning structure.

Therefore, according to the pulp mold cushion materials 1 to 4, it is possible to surely fulfill the function as the cushion material. And this cushion material 1-4
Since it is made of pulp mold, it can be simply melted and discarded after use. Therefore, unlike the conventional cushioning material made of polystyrene foam, there is no risk of damaging the natural environment, and an environmentally friendly cushioning material for packaging can be obtained. Further, since the cushioning property of the whole can be improved as compared with the conventional cushion material made of pulp mold, the certainty of protecting the article can be improved.

Further, ribs, bosses, etc. can be formed at arbitrary positions, and the buffering property can be easily adjusted. Further, the release depth of the cushion material can be set deeper than the conventional one, and the degree of freedom of the required shape can be increased. Further, it is possible to obtain a cushioning material that further matches the shape of the product.

4 to 11 show another embodiment of the present invention. In this embodiment, a cushioning material made of a flat pulp mold is provided with a plurality of bulging portions having a certain size of cushioning property for supporting the goods, and the impact force applied to the goods by these bulging portions is applied. It is a buffer.

In FIG. 4, a plurality of hemispherical convex portions 30a and 30b showing a specific example of the shape of the bulging portion are provided on the flat pulp-molded cushioning materials 31 to 35. And, FIG. 5 shows the cushion material 31 made of pulp mold.
~ 35 are used to show the state where the television A as an article is stored in the corrugated cardboard box 5.

In FIG. 4, 31 is a bottom plate, 32 is a top plate, 33 is a back plate, and 34 and 35 are side plates. The bottom plate 31 is formed with leg portions 36 and 37 that bulge downward in a truncated cone shape at five locations in the central portion and four corners. And
Two hemispherical convex portions 30a that are bulged in a hemispherical shape are formed near the concave side of the leg portions 37 arranged at the four corners of the bottom plate 31. Also, other face plates 32 except the bottom plate 31
35 to 35 (the same applies to a front plate (not shown)), hemispherical convex portions 30b are formed at the four corners thereof.

Thus, as shown in FIG. 5, the television A is supported from below by the eight hemispherical projections 30a provided on the bottom plate 31, and the television is mounted on these eight hemispherical projections 30a. The full weight of John A has been added.
Then, the weight of the television A given to the bottom plate 31 is supported by the central leg portion 36 and the four leg portions 37 around the central leg portion 36, and is transmitted to the cardboard box 5 via these leg portions 36, 37. To be Further, four hemispherical convex portions 30b are respectively brought into contact with the front and rear front and rear surfaces of the television A and both side surfaces thereof, and these hemispherical convex portions 30b are applied to the television A from the lateral direction. The impact force is buffered. Furthermore, four hemispherical projections 30b are provided on the upper surface of the television A.
And the impact force applied to the television A from above is buffered by these hemispherical convex portions 30b.

The shape and size of these hemispherical projections 30a and 30b are formed to have a constant buffer value under constant conditions. Here, the constant condition means that the material of the pulp mold cushion materials 31 to 35, the mold thickness thereof, the water content at the time of manufacturing, and the like are constant.
Under such a constant condition, as shown in FIG. 6, by determining the diameter d and the height h of the bases of the hemispherical protrusions 30a and 30b, one per hemispherical protrusion 30a and 30b can be obtained. The buffer value can be determined. Then, by appropriately selecting the diameter d and the height h of the hemispherical convex portions 30a and 30b, the buffer value per one can be adjusted to an arbitrary value. According to this embodiment, since the bulging portion has a hemispherical shape and substantially comes into point contact with the television A, the impact force applied from the television A is applied to the hemispherical convex portions 30a, 3a.
0b can be dispersed over the entire area, and the television A can be softly supported and a large impact force can be effectively buffered.

The bulging portion formed on the pulp mold cushion material may have a shape as shown in FIGS. 7 to 8. The bulging portion shown in FIG.
The whole is formed in a truncated cone shape. According to this truncated cone-shaped convex portion 38, the television A is brought into surface contact with the television A over a wide area due to the diameter d ₀ of the top portion, so that the television A can be supported in a firm manner. Further, the bulging portion shown in FIG. 8 is formed into a conical shape as a whole, and the conical convex portion 39 can support the television A at a narrow point.

9 to 10, a plurality of hemispherical convex portions 30, which are bulging portions, are provided on a cushion material made of pulp mold having a plane L shape and used as the corner cushion material 40 of the packaging container 6. It is a thing. And in FIG. 11,
The corner cushion material 40 made of this pulp mold cushion material is shown installed at eight corners of the packaging container 6.

The corner cushion member 40 is composed of three substantially square corner pieces, and nine hemispherical projections 30 are formed on each corner piece in alignment in both vertical and horizontal directions. . In this case, corner 4
No. 0 is unfolded and molded in the state as shown in FIG. 9, and then bent at a bent portion 41 such as perforations formed at the time of molding. Then, after being bent and formed into a state as shown in FIG. 10, as shown in FIG. 11, it is installed at each corner of the packaging container 6.

According to this embodiment, the corner cushion members 40 installed at the eight corners protect the packaging container 6 and buffer the impact force applied to the packaging container 6 from these corners. It is possible to reliably protect the items inside. As the shape of the bulging portion, it is needless to say that other various shapes can be applied other than those shown in FIGS. 7 and 8.

As described above, the present invention is not limited to the above-mentioned embodiment. For example, as the shape of the bulging portion, various other shapes besides those shown in FIGS. 7 and 8 are applied. Of course, you can do that. Further, as shown in FIGS. 9 to 10, it is not necessary to arrange the bulging portions in both the vertical and horizontal directions, and the bulging portions may be arranged in a staggered manner or may be arranged completely apart from each other. Various modifications can be made without departing from the spirit of the present invention.

[0048]

As described above, according to the present invention,
Since the required three-dimensional structure is developed and formed in advance into an appropriate two-dimensional structure and the required portion is bent at the time of use to form a three-dimensional structure, it is possible to apply a cushioning structure to all the surfaces of the cushioning material that receive the product, It is possible to provide a cushioning material made of pulp mold having a cushioning property suitable for the shape of the product. Moreover, bosses, ribs, etc. can be formed at arbitrary positions to obtain a cushioning material having high strength, and the releasing depth of the cushioning material can be set deeper to buffer impact force. It is possible to mold a cushioning material that can increase the degree of protection of the cushion material.

The strength of the cushioning material as a whole can be increased by providing the reinforcing uneven portion on the flat surface of the three-dimensional structure.

Further, by providing a plurality of bulging portions having a certain size and having a cushioning property to support the article and buffering the impact force applied to the article by these bulging portions, the cushioning effect is surely ensured. Can be obtained and the degree of protection of the article can be increased. Moreover, the buffer value can be calculated by setting the bulged portion to a desired shape,
The effect that the required cushioning value can be easily set, the cushioning property can be quantified, and the cushioning design period in the pulp mold cushioning material can be shortened is obtained.

By making the shape of the bulge part hemispherical, the impact force input to the apex is evenly distributed over the entire hemispherical surface, so that a large impact force can be endured. A buffer property is obtained.

Further, by making the shape of the bulging portion into a truncated cone shape, the product can be supported in a wide area, and the impact force can be prevented from locally acting on the product.

Furthermore, by making the shape of the bulge portion conical, the product can be supported in a small area, and the impact force can be locally applied to the product.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention in a developed state.

FIG. 2 is a perspective view showing a bent state of FIG.

FIG. 3 is an explanatory view showing a usage state of the cushion material shown in FIG. 1 and the like.

FIG. 4 is an explanatory diagram of a disassembled state showing a second embodiment of the present invention.

FIG. 5 is a cross-sectional view showing the usage state of FIG.

6 is an enlarged perspective view of a bulge portion shown in FIG. 4 and the like.

FIG. 7 is an enlarged perspective view showing another embodiment of the bulging portion.

FIG. 8 is an enlarged perspective view showing still another embodiment of the bulging portion.

FIG. 9 is a development view showing a third embodiment of the present invention.

FIG. 10 is a perspective view showing a bent state of FIG.

11 is a perspective view showing a usage state of FIG.

[Explanation of symbols]

 1 Lower Bottom Cushion Material 5 Cardboard Box 6 Packaging Container 10 Side Plate 11 Front Plate 12 Bottom Plate 13a, 13b Bent Section 14 Rear Side Swelling Section 15 Side Side Ridge Section 17, 20 Reinforcing Groove (Uneven Section) 18 Front Swelling Section 19 Bottom surface protrusions 30, 30a, 30b Hemispherical convex portion (bulging portion) 31 Bottom plate 32 Upper surface plate 33 Rear plate 34, 35 Side plate 38 Cone trapezoidal convex portion (bulging portion) 39 Conical convex portion (bulging portion) 40) Corner cushion material 41 Bent section A Television (item) a Front cabinet b Rear cabinet c Step section

Claims (6)

[Claims] 1. A cushioning material made of a pulp mold, which is formed into a predetermined shape by immersing a mold material in a pulp solution and solidifying the pulp adhered to the surface of the mold material so that a required three-dimensional structure has a suitable planar structure in advance. A cushioning material made of pulp mold, which is expanded and molded into a sheet, and is bent into a predetermined three-dimensional structure at the time of use to obtain a required three-dimensional structure. 2. The cushion-molded cushion material according to claim 1, wherein the flat portion of the three-dimensional structure is provided with an uneven portion for reinforcement. 3. A cushioning material made of pulp mold, which is formed into a predetermined shape by immersing a mold material in a pulp solution and solidifying the pulp adhered to the surface of the mold material, and having a certain size for supporting an article. Cushion material made of pulp mold, characterized in that a plurality of swelling portions having the cushioning property are provided, and the swelling portions cushion the impact force applied to the product. 4. The cushion-molded cushion material according to claim 3, wherein the bulging portion is hemispherical. 5. The cushion-molded cushion material according to claim 3, wherein the bulged portion has a truncated cone shape. 6. The cushion-molded cushion material according to claim 3, wherein the bulged portion has a conical shape.