JPH06336262A - Cushioning material with air layer - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a cushioning material that has a cushioning property, does not pollute the packaging workplace or unpacking facility, is easy to dispose of, and has a recyclable / reusable air layer. [Structure] A material such as a paper-based material, a grain-based material, or a metal-based material is formed into a granular hollow structure 11 having an outer shell 12 of a spherical shape, a cylindrical shape, a square tube shape, a polygonal tube shape, or the like and an internal air layer 13. Then, these shapes are combined, or these granular hollow structures 11 are pressure-bonded to each other by a molding frame, a mold, or the like to be processed into a molded body 10 having a predetermined shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning material for packaging various products, parts, etc., and protecting these various products, parts, etc. from vibration and shock received by transportation, cargo handling and the like.

[0002]

2. Description of the Related Art FIG. 13 is an explanatory view showing an example of a packaging form using a foamed plastic resin which is generally widely used as a cushioning material for electric appliances and the like, for example, Styrofoam.
FIG. 14 is a cross-sectional view showing the molded polystyrene foam cushioning material. In each figure, 1 is, for example, a main body of a color television,
Reference numeral 2 denotes a cushioning material that protects and fixedly supports the main body 1, and is, for example, a styrofoam molded into a fitting type by using a mold (not shown). Depending on the shape and size of the electrical product to be protected, 2 It is configured by dividing into 4, 4 and 8. Reference numeral 3 is an exterior case that houses the main body 1 and the cushioning material 2.

In more detail, the cushioning material 2 is a molded body 2 formed by secondary foaming of primary expanded polystyrene foam by steam and pressure at around 110 ° C. in a mold.
and a numeral 4 is a styrofoam bead forming the molded body 2a. The beads 4 are bonded in a tortoise shell state in the mold by temperature, foaming time and pressure.

In order to wrap an electric product such as a color television using the cushioning material 2, the cushioning material 2 for protecting the lower portion of the body 1 of the color television is first provided at the four corners of the bottom of the outer case 3.
After arranging, and inserting the main body 1, the upper protective cushioning material 2 of the main body 1 is inserted into the upper four corners of the main body 1, and the upper lid of the outer case 3 is closed and fixed.

[0005]

However, in the above-mentioned cushioning material 2 made of expanded polystyrene, when it is disposed of after use, not only is it bulky as garbage, but also a bad odor is emitted or high heat is generated during incineration. There was a problem in the incineration process such as damage to the incinerator.

Further, when the beads 4 of styrofoam, which are formed in a small shape such as a macaroni-like shape (shape like a deformed tube) or a chip shape, are used as a bulk material,
Since the main body 1 is housed in the outer case 3 and then inserted into pieces, there is a problem that the beads 4 of styrofoam, which are extremely light in weight, are scattered when unpacking, and the packaging work area and the unpacking area become dirty.

[0007] In view of the above points, the present invention provides a cushioning material having a cushioning property, which is easy to dispose of and has a recyclable / reusable air layer without contaminating a packaging work space or an unpacking space. With the goal.

[0008]

A cushioning material having an air layer according to a first aspect of the present invention has a spherical, cylindrical, square tube-shaped, or polygonal tube-shaped outer shell and an internal air layer. A granular hollow structure or a material formed into a granular porous body such as a spherical shape, a cylindrical shape, a prismatic shape, or a polygonal prismatic shape having a cushioning property is used, and these granular material shapes are combined or these granular material shapes are combined. The hollow structures and the granular porous bodies are pressure-bonded to each other with a molding frame, a mold or the like, and molded into a predetermined shape.

The cushioning material having an air layer according to the second aspect of the present invention is a paper-based material made of a spherical, cylindrical, rectangular, or polygonal outer shell and an inner air layer. Or a granular hollow structure having a cushioning property, such as a spherical, cylindrical, prismatic, or polygonal columnar porous body, and combining these granular hollow structures or porous bodies, or Each of these granular hollow structures and each of the granular porous bodies are pressure-bonded to each other by a molding frame, a mold or the like, and molded into a predetermined shape.

The cushioning material having an air layer according to the third aspect of the present invention is a grain-based material such as cornstarch or rice, which is spherical, cylindrical, rectangular or polygonal tubular. The granular hollow structure having an outer shell and an internal air layer, or a granular porous body having a cushioning property such as a spherical shape, a cylindrical shape, a prismatic shape, or a polygonal prismatic shape, and these granular hollow structures or The porous bodies are combined, or these granular hollow structures and the granular porous bodies are pressure-bonded to each other by a molding frame, a mold or the like, and molded into a predetermined shape.

The cushioning material having an air layer according to the fourth aspect of the present invention is made of a metallic material, such as a spherical, cylindrical, rectangular, or polygonal outer shell and an inner air layer. Or a granular hollow structure having a cushioning property, such as a spherical, cylindrical, prismatic, or polygonal columnar porous body, and combining these granular hollow structures or porous bodies, or Each of these granular hollow structures and each of the granular porous bodies are pressure-bonded to each other by a molding frame, a mold or the like, and molded into a predetermined shape.

The cushioning material having an air layer according to the fifth aspect of the present invention is such that an adhesive cloth or a fold-shaped fiber layer is provided on the outer periphery of a granular hollow structure or a granular porous body, and these granular hollow structures are provided. Processed into a molded product with a predetermined shape by intertwining the fiber layers of the structure or porous material, or by pressure bonding the fiber layers of the granular hollow structures and the granular porous materials to each other with a molding frame or a mold. It was done.

The cushioning material having an air layer according to the sixth aspect of the present invention is made of a paper-based material, a grain-based material, a metal-based material or the like in the form of a sheet, and a molding frame, a metal mold, or a surface thereof. Both sheets are formed by embossing or deep-drawing to form a large number of uneven projections such as circular, square, or polygonal shapes, and then fitting multiple uneven projections together. This is a hollow structure having a predetermined shape having an air layer around the fitting portion of each of the projections and depressions in between.

The cushioning material having an air layer according to the seventh aspect of the present invention is made of a paper-based material, a grain-based material, a metal-based material or the like in the form of a sheet, and a molding frame, a mold, or a surface thereof. A large number of protrusions of circular, square or polygonal shape are formed by embossing or deep drawing, and an adhesive cloth or a fold-shaped fiber layer is provided at the tip of each of these protrusions, and these protrusions and fiber layers are provided. A plurality of the obtained sheets are processed into a hollow structure of a predetermined shape having an air layer around the tips of the protrusions and the periphery of the protrusions by intertwining the fiber layers of the sheets.

[0015]

In the present invention, the cushioning material is paper-based, grain-based,
A granular hollow structure having an outer air and an internal air layer such as a sphere, a cylinder, a square cylinder, or a polygonal cylinder made of a metal-based material, or a sphere, a cylinder, or a prism having a cushioning property. ,
Or it is formed from a granular porous body such as a polygonal columnar shape, and these granular hollow structures and porous bodies are combined, or these granular hollow structures are mutually formed, and the granular porous bodies are mutually formed by a molding frame or a mold. Since it is composed by pressure bonding and molding into a predetermined shape, it is easy to mold into various shapes,
The air layer protected by the outer structure of the granular hollow structure or porous body serves as a cushion to protect various products and parts from vibration during transportation and drop impact during cargo handling, and at the same time dispose of after use. It is also easy and can be recycled and reused.

Further, an adhesive cloth or a fold-like fiber layer is provided on the outer surface of a granular hollow structure or a granular porous body made of a paper-based, grain-based, metal-based material, etc. The fiber layers of the body are entangled with each other, or the fiber layers of the granular hollow structures and the porous bodies of the granular porous bodies are pressure-bonded by a molding frame, a mold, or the like so as to be processed into a molded body having a predetermined shape. Therefore, the occupation rate of the air layer in the molded body can be increased, and the cushion function can be improved.

Further, in the present invention, the cushioning material is formed from a sheet-shaped material such as paper-based material, grain-based material or metal-based material, and the surface thereof has a molding frame or die, or embossing or deep drawing. A large number of uneven projections such as circular, square or polygonal shapes are formed by using, and a plurality of sheets with the uneven projections are fitted together by fitting the uneven projections to each uneven projection between both sheets. Since it is formed by processing into a hollow structure having a predetermined shape having an air layer around the fitting portion, the manufacturing becomes easy.

Further, in the present invention, the cushioning material is formed from a sheet-shaped material such as paper-based material, grain-based material or metal-based material, and the surface thereof has a molding frame or die, or embossing or deep drawing. Form a large number of protrusions such as circular, square or polygonal shape by using, and provide an adhesive cloth or a fold-shaped fiber layer on the tip of each protrusion, and then use multiple sheets with these protrusions and fiber layers. The two sheets are joined by intertwining the fibrous layers of each other, and are formed by processing into a hollow structure of a predetermined shape having an air layer at the tip of each protrusion between these sheets and the periphery of each protrusion. The occupation rate of the air layer in the structure can be increased, and the cushion function can be improved.

[0019]

【Example】

Example 1. The present invention will be described below with reference to illustrated embodiments.
FIG. 1 is a sectional view showing a cushioning material having an air layer according to the first embodiment of the present invention, and FIG. 2 is a perspective view showing the appearance of the molded body. In each figure, 10 is a molded body that constitutes the cushioning material having the air layer of the present embodiment. The molded body 10 includes a plurality of granular hollow structures 11 having a spherical or cylindrical outer shell 12 and an inner air layer 13 and made of a paper-based material, a grain-based material, a metal-based material, etc., which are pressed by a molding frame or a mold. It is adhered and molded into a predetermined shape.

This will be described in detail according to the manufacturing procedure. In the case of a molded body made of a paper-based material, the paper is first returned to a fibrous shape, and a predetermined amount of adhesive (such as glue) is applied to the fibers of the returned paper. When mixing, mix it in such a way that it does not become too hard and can maintain the desired shape. Then, paper fibers mixed with an adhesive are attached to the outer surface of the sphere, balloon or cylinder to form a spherical or cylindrical hollow structure, and then the sphere, balloon or cylinder is pulled out, and the sphere or balloon or The granular hollow structure from which the cylindrical body is pulled out is dried. Next, the granular hollow structure formed as described above is put together with a predetermined amount of adhesive in a required number of molding frames or molds, etc., and heated to a predetermined temperature and pressed to adhere to each other to form a predetermined shape. To form a molded body.

In the case of a molded product made of a grain-based material, first, a material such as cornstarch or powdered rice is mixed with a predetermined amount of biodegradable resin to form a paste, and the paste is spread on a flat plate. A sheet is formed by heating, and a plurality of spherical or cylindrical dies are simultaneously formed by embossing or deep drawing on this sheet, and these formed spheres or cylinders are separated from the sheet to form a granular hollow structure. To do. Alternatively, a certain amount of biodegradable resin is mixed with a material such as cornstarch or powdered rice to form a paste, and the paste is applied to the outer surface of a sphere, a balloon, or a cylinder to form a spherical or cylindrical hollow structure. After the formation, the spheres, balloons or cylinders are pulled out, and the granular hollow structure from which the spheres, balloons or cylinders have been pulled out is heated and cured. Next, the granular hollow structure formed as described above is put together with a predetermined amount of adhesive in a required number of molding frames or molds, etc., and heated to a predetermined temperature and pressed to adhere to each other to form a predetermined shape. To form a molded body. In the process of molding a hollow structure from this grain-based material, mixing a powdered grain with a biodegradable resin means that the powder is made into a paste to facilitate molding, and the hollow structure after molding. The hardness can be adjusted by the amount of biodegradable resin.

Further, in the case of a molded body made of a metal-based material, a thin plate is used as a material, and a plurality of spherical or cylindrical molds are simultaneously molded into the thin plate by embossing or deep drawing, and these spherical or cylindrical molds are molded. Are separated from the thin plate and formed into granular hollow structures. Next, the granular hollow structure formed as described above is put together with a predetermined amount of adhesive in a required number of molding frames or molds, etc., and heated to a predetermined temperature and pressed to adhere to each other to form a predetermined shape. To form a molded body.

Since the cushioning material having the air layer of this embodiment is constructed as described above, it can be easily formed into various shapes, and the air layer protected by the outer shell 12 of the granular hollow structure 11 can be formed. 13 serves as a cushion to protect various products and parts from vibration during transportation and drop impact during cargo handling.

Further, the granular hollow structure made of a paper-based or metal-based material can be recycled and reused after use, and the granular hollow structure made of a grain-based material is
Since it is decomposed by bacteria in the soil, it not only causes no pollution problem but also can be used as feed.

Example 2. FIG. 3 is a sectional view showing a cushioning material having an air layer according to a second embodiment of the present invention. In this example, a granular hollow structure 21 made of a paper-based material, a grain-based material, a metal-based material, or the like, which constitutes the molded body 10, is configured by a prismatic outer shell 22 and an internal air layer 23. It is different from that of the first embodiment.

The manufacturing method of the molded body 10 in this embodiment is the same as that of the first embodiment except that the core material and the molding material for finishing the hollow structure 21 into the rectangular tubular shape are rectangular. Is. In this embodiment, the first embodiment described above is used.
The same action and effect are obtained.

Example 3. FIG. 4 is a sectional view showing a cushioning material having an air layer according to a third embodiment of the present invention. In this embodiment, a granular hollow structure 31 made of a paper-based material, a grain-based material, a metal-based material, or the like that composes the molded body 10 includes a polygonal tubular outer shell 32 and an internal air layer 33. This is different from the above-mentioned embodiments.

The manufacturing method of the molded body 10 in this embodiment is the same as that of the first embodiment except that the core material and the molding material for finishing the hollow structure 31 into a polygonal cylindrical shape are polygonal. Is the same as. Also in this embodiment, the same operational effects as those of the above-described Embodiment 1 are obtained.

Example 4. FIG. 5 is a sectional view showing a granular porous body which is an element of a cushioning material having an air layer according to a fourth embodiment of the present invention. In this embodiment, a spherical or cylindrical granular porous body 1 having cushioning characteristics in which the constituent elements of the molded body are made of a paper-based material, a grain-based material, a metal-based material, etc.
11 is different from that of each of the above-described embodiments in that the formed porous body 111 is pressure-bonded by a large number of molding frames or dies to be molded into a predetermined shape.

This will be described in detail in accordance with the manufacturing procedure. In the case of a molded body made of a paper-based material, the paper is first returned to a fibrous shape, and an adhesive such as glue is applied to the fibers of the returned paper by a predetermined amount (cured). When mixing, mix it in such a way that it does not become too hard and can maintain the desired shape. Next, paper fibers mixed with an adhesive are filled inside slit-shaped spheres or slit-shaped cylinders to form spherical or columnar granular porous bodies, and then the spheres or cylinders are disassembled. Then, the granular porous body is taken out and dried. next,
The granular porous body molded as described above is put in a required number of molding frames and molds together with a predetermined amount of an adhesive, and heated to a predetermined temperature and pressed to bond, for example, as shown in FIG.
Molded into a molded body as shown in FIG.

In the case of a molded product made of a grain-based material, first, a material such as corn starch or powdered rice is mixed with a biodegradable resin and a foaming agent for generating a gas by heating in a predetermined amount to form a paste, This paste was filled into slit-shaped spheres or slit-shaped cylinders leaving voids for the foaming rate, and after heating, the spheres or cylinders were decomposed and cured inside these. During the curing process, a granular porous body having many holes and internal cavities is taken out. Next, the granular hollow structure molded as described above is put in a required number of molding frames and molds together with a predetermined amount of adhesive material, heated to a predetermined temperature and pressed to bond them, and a predetermined shape is obtained. To form a molded body.

Further, in the case of a molded body made of a metallic material, a granular block is used as the material, and holes are bored in this block from multiple directions by a water jet so that it can be bent when an external force is applied. It is formed into a porous body having a buffer property. Next, the granular porous body formed as described above is put in a required number of molding frames or molds together with a predetermined amount of an adhesive material, heated to a predetermined temperature and pressed to be adhered, and a predetermined shape is obtained. Form into a compact.

Since the cushioning material having an air layer of this embodiment is constructed as described above, it can be easily formed into various shapes, and a large number of air layers protected by the outer shell of the granular porous body 111. Can serve as a cushion to protect various products and parts from vibration during transportation and drop impact during cargo handling.

Example 5. FIG. 6 is a sectional view showing a granular porous body which is an element of a cushioning material having an air layer according to a fifth embodiment of the present invention. In this embodiment, the above-mentioned point is that the granular porous body 121 having a cushioning property made of a paper-based material, a grain-based material, a metal-based material, or the like that constitutes the molded body is formed of a prismatic block. It differs from that of the fourth embodiment.

The method of manufacturing the molded body in this example is as follows.
It is similar to that of the fourth embodiment. In this example,
The same effects as those of the above-described fourth embodiment are obtained.

Example 6. FIG. 7 is a sectional view showing a granular porous body which is an element of a cushioning material having an air layer according to a sixth embodiment of the present invention. In this embodiment, a granular porous body 131 having a cushioning property made of a paper-based material, a grain-based material, a metal-based material, or the like that constitutes a molded body is configured by a polygonal column-shaped block. It differs from that of the above-mentioned Examples 4 and 5.

The method of manufacturing the molded body in this example is as follows.
It is similar to that of the fourth embodiment. Also in this example,
The same effects as those of the above-described fourth embodiment are obtained.

Example 7. FIG. 8 is a sectional view showing a cushioning material having an air layer according to a seventh embodiment of the present invention. In this embodiment, an adhesive cloth or a fold-shaped fiber layer 40 is provided on the outer shell 12 of the spherical or cylindrical granular hollow structure 11 shown in the first embodiment, and the adjacent granular hollow structures 11 are separated from each other. As described above, the fiber layers 40 are intertwined with each other, or the fiber layers 40 of the granular hollow structures 11 are pressure-bonded to each other by a molding frame, a mold, or the like to be processed into the molded body 10 having a predetermined shape. Of each embodiment.

In this embodiment, since the hollow structures 11 are connected to each other by intertwining the adhesive cloth or the fold-shaped fiber layer 40, the hollow structures 11 are strongly connected to each other and formed into a block. In addition, the air layer occupancy in the molded body 10 can be increased, and the cushioning function can be improved. Here, the fiber layer 40 is described as an example in which the fiber layer 40 is provided in the outer shell 12 of the spherical or cylindrical granular hollow structure 11 shown in Example 1, but this fiber layer 40 is used in Example 2. The outer shell 2 of the rectangular granular hollow structure 21 shown in FIG.
2. Polygonal cylindrical granular hollow structure 3 shown in Example 3
1 outer shell 32, outer shell of spherical or cylindrical granular porous body 111 shown in Example 4, porous body 11 shown in Example 5
1. Outer shell of No. 1, prismatic granular porous body 12 shown in Example 5
It may be provided in the outer shell of No. 1 and in the outer shell of the polygonal columnar granular porous body 131 shown in the sixth embodiment, and in any case, the same effect as the present embodiment is obtained.

In the examples up to this point, a molded body is constituted by using a granular hollow structure having a single shape or a granular porous body, but a hollow structure having a different shape is shown. Alternatively, a porous body may be combined to form a molded body. Further, the granular hollow structure or the granular porous body can be used as a bulk material. In this case, since the granular hollow structure or granular porous body has an appropriate weight as compared with the conventional styrofoam beads, it does not scatter during packaging work or unpacking, and the Does not pollute the packaging area.

Example 8. FIG. 9 is a perspective view showing a sheet which is an element of a cushioning material having an air layer according to an eighth embodiment of the present invention, and FIG. 10 is a sectional view showing a hollow structure constructed by using a plurality of the sheets. is there. 5 in each figure
Reference numeral 0 is a hollow structure that constitutes the cushioning material having the air layer of this embodiment. The hollow structure 50 is formed by assembling two sheets 51 made of a paper-based material, a grain-based material, a metal-based material, or the like so as to overlap each other. Each sheet 51
A cylindrical bottomed concave projection 52 is provided at a predetermined interval on the surface of each, and a cylindrical first convex projection 54 is provided between the concave projections 52. The cylindrical second convex protrusions 55 are provided at the tips of the convex protrusions 54, respectively. The second convex protrusion 55 is provided with a taper 55a on the peripheral surface of which the diameter of the tip is expanded, and the diameter of the base end is the same as the diameter of the hole 53 of the concave protrusion 52. The diameter of the tip should be slightly larger than the diameter of the hole 53.
Each is set. The concave projection 52, the first convex projection 54, and the second convex projection 55 are the sheet 51.
It is simultaneously molded on the surface of the mold by a molding frame or mold, or by embossing or deep drawing. Then, by using two sheets 51 in which the concave projections 52, the first convex projections 54, and the second convex projections 55 are formed in this way, and the concave-convex projections 52, 55 are fitted together, The hollow structure 50 is formed in a predetermined shape and has an air layer 56 around the fitting portion of each uneven projection between the two sheets 51, 51.

This will be described in detail in accordance with the manufacturing procedure. In the case of a hollow structure made of a paper-based material, the paper is first returned to a fibrous shape, and an adhesive such as glue is applied to the fibers of the returned paper in a predetermined amount (curing). When mixing, mix so that it is not too hard and maintains the desired shape). Then, the paper fibers mixed with the adhesive are put in a molding frame, a mold, or the like and heated to a predetermined temperature to simultaneously form the base sheet and the circular projections and depressions. next,
Two sheets formed as described above are used, and the protrusions and recesses are fitted together to form a hollow structure having a predetermined shape.

In the case of a hollow structure made of a grain-based material, first, a material such as corn starch or powdered rice is mixed with a predetermined amount of biodegradable resin to form a paste, and the paste is spread and heated. By doing so, a sheet is formed, and on the surface of this sheet, circular convex-concave projections are simultaneously formed by embossing or deep drawing. Alternatively, a material such as corn starch or powdered rice is mixed with a predetermined amount of biodegradable resin to form a paste, and the paste is put into a molding frame or a mold and heated to form a base sheet and a circular shape. The uneven projections of are simultaneously molded. Next, two sheets formed as described above are used, and the projections and depressions are fitted to each other to form a hollow structure having a predetermined shape.

In the case of a hollow structure made of a metallic material, a thin plate is used as a material, and a circular uneven projection is simultaneously formed on the surface of this thin plate by embossing or deep drawing. Next, the sheet formed as described above is
A single piece is used and the projections and depressions are fitted together to form a hollow structure having a predetermined shape.

Since the cushioning material having the air layer of this embodiment is constructed as described above, it is sufficient to prepare two sheets which are the elements of the cushioning material and fit the projections and depressions of each other together. Will be easier. Although the concave and convex projections are circular here, the convex and concave projections may have a rectangular shape or a polygonal shape, and in any case, the same operational effect as that of the present embodiment can be obtained. .

Example 9. FIG. 11 is a perspective view showing a sheet which is an element of a cushioning material having an air layer according to a ninth embodiment of the present invention, and FIG. 12 is a sectional view showing a hollow structure constituted by using a plurality of the sheets. is there. In each figure,
Reference numeral 60 is a hollow structure that constitutes the cushioning material having the air layer of this embodiment. The hollow structure 60 is formed by assembling two sheets 61 made of a paper-based material, a grain-based material, a metal-based material, or the like so as to be stacked. Each sheet 6
The surface of 1 is provided with a molding frame, a mold, or circular protrusions 62 at predetermined intervals by embossing or deep drawing, and the tip of each protrusion 62 has an adhesive cloth or a pleated fiber. A layer 63 is provided.
Then, two sheets 61 provided with the protrusions 62 and the fiber layers 63 in this way are used, and
By intertwining 3 with each other, both sheets 61, 6
It is formed in the hollow structure 60 of a predetermined shape having an air layer 64 around the tips of the protrusions 62 and the periphery of the protrusions 62.

In this embodiment, the sheets 61 are joined together by intertwining an adhesive cloth or a fold-shaped fiber layer 63, and an air layer is formed around the tips of the protrusions 62 between the sheets 61 and around the protrusions 62. The hollow structure 6 is formed by processing the hollow structure 60 having a predetermined shape.
The occupation rate of the air layer 64 can be increased within 0, and the cushion function can be improved. In addition,
Here, the fiber layer 63 is described as an example in which the circular protrusions 62 are provided at the tips of the protrusions. However, the protrusions may be square or polygonal, and the fiber layers may be provided at the tips thereof. In any case, the same operational effect as that of the present embodiment is obtained.

[0048]

As described above, according to the present invention, a paper-based material, a grain-based material, a metal-based material or the like having a cushioning property is used as the cushioning material, so that it is easy to dispose of and is recycled
Can be reused. In addition, granular hollow structures and granular porous bodies can be used as bulk materials, and since they have an appropriate weight, they do not scatter during packaging or unpacking, so the packaging workplace The unpacking area and the unpacking area can be kept clean and tidy, and the packaging work time can be shortened.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a cushioning material having an air layer according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing the outer appearance of the cushioning material of the first embodiment.

FIG. 3 is a sectional view of a cushioning material having an air layer according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a cushioning material having an air layer according to a third embodiment of the present invention.

FIG. 5 is a sectional view showing a granular porous body which is an element of a cushioning material having an air layer according to a fourth embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a granular porous body which is an element of a cushioning material having an air layer according to a fifth embodiment of the present invention.

FIG. 7 is a sectional view showing a granular porous body which is an element of a cushioning material having an air layer according to a sixth embodiment of the present invention.

FIG. 8 is a sectional view of a cushioning material having an air layer according to a seventh embodiment of the present invention.

FIG. 9 is a perspective view showing a seat which is an element of a cushioning material having an air layer according to an eighth embodiment of the present invention.

FIG. 10 is a cross-sectional view showing a hollow structure constituted by using a plurality of sheets of an eighth embodiment.

FIG. 11 is a perspective view showing a seat which is an element of a cushioning material having an air layer according to a ninth embodiment of the present invention.

FIG. 12 is a cross-sectional view showing a hollow structure constituted by using a plurality of sheets of a ninth embodiment.

FIG. 13 is an explanatory diagram showing an example of a packaging form using a conventional cushioning material.

FIG. 14 is a cross-sectional view of a conventional cushioning material.

[Explanation of symbols]

 10 Molded body 11,21,31 Granular hollow structure 12,22,32 Outer shell 13,23,33 Internal air layer 40,63 Fiber layer 111,121,131 Granular porous body 50,60 Hollow structure 51,61 Sheet 52 concave projection 53 hole of concave projection 54 first convex projection 55 second convex projection 56, 64 air layer 62 projection

Claims (7)

[Claims] 1. A granular hollow structure having an outer shell and an internal air layer such as a spherical shape, a cylindrical shape, a rectangular cylinder shape, or a polygonal cylinder shape, or a spherical shape, a cylindrical shape, a prismatic shape having a cushioning property, or Using materials formed in a granular porous body such as a polygonal columnar shape, combining these granular material shapes, or pressing these granular hollow structures and granular porous bodies with each other with a molding frame body or a mold A cushioning material having an air layer formed by adhering and forming into a predetermined shape. 2. A paper-based material is a spherical type, a cylindrical type, a square tubular type,
Or, a granular hollow structure having an outer shell and an internal air layer such as a polygonal cylinder shape, or a spherical shape or a cylindrical shape having a cushioning property,
Formed into a granular porous body such as prismatic or polygonal prismatic type,
A combination of these granular hollow structures or porous bodies, or pressure bonding of these granular hollow structures or granular porous bodies to each other with a molding frame, a mold or the like, and forming into a predetermined shape. A cushioning material having an air layer according to 1. 3. A granular hollow structure having a grain-shaped material such as corn starch, rice, etc., having an outer shell and an inner air layer, such as a spherical shape, a cylindrical shape, a square tube shape, or a polygonal tube shape, or a buffering property. Having a spherical shape, a cylindrical shape, a prism shape, a polygonal pillar shape, or the like, formed into a granular porous body, and a combination of these granular hollow structures or porous bodies, or these granular hollow structure bodies, or a granular porous body. The cushioning material having an air layer according to claim 1, wherein the bodies are pressure-bonded to each other by a molding frame, a mold or the like and molded into a predetermined shape. 4. A granular hollow structure having a metal-based material, such as a spherical shape, a cylindrical shape, a square tube shape, or a polygonal tube shape, having an outer shell and an internal air layer, or a spherical shape or a cylinder having a buffering property. Formed in a granular porous body such as a mold, prismatic shape, or polygonal columnar shape and combining these granular hollow structures or porous bodies, or forming a molding frame between these granular hollow structures and each other. The cushioning material having an air layer according to claim 1, wherein the cushioning material is formed by pressing and adhering with a mold or a die to form a predetermined shape. 5. An adhesive cloth or a fold-shaped fiber layer is provided on the outer surface of a granular hollow structure or a granular porous body, and these granular hollow structures and porous fiber layers are intertwined with each other, or a granular hollow structure. The air according to any one of claims 1 to 4, wherein the fibrous layers of the bodies and the granular porous bodies are pressure-bonded to each other by a molding frame, a mold or the like to form a molding of a predetermined shape. Cushioning material with layers. 6. A sheet-shaped material such as a paper-based material, a grain-based material, or a metal-based material, and a molding frame or a mold on the surface thereof, or a circular shape, a square shape, a polygonal shape, etc. by embossing or deep drawing. A plurality of uneven projections are formed, and a plurality of sheets on which the uneven projections are formed are fitted to each other to form an air layer around the fitting portion of each uneven projection between both sheets. A cushioning material having an air layer formed into a hollow structure. 7. A sheet-shaped material such as a paper-based material, a grain-based material, or a metal-based material, and a molding frame or die on the surface thereof, or a circular shape, a square shape, a polygonal shape, or the like by embossing or deep drawing. In addition to forming a large number of projections of the above, each of these sheets is provided with an adhesive cloth or a fold-shaped fiber layer at the tip of each of these projections, and a plurality of sheets provided with these projections and the fiber layers are entangled with each other. A cushioning material having an air layer formed by processing into a hollow structure of a predetermined shape having an air layer around the tip of each protrusion and the periphery of each protrusion.