JPH07125776A - Cushioning paper material - Google Patents

Abstract

PURPOSE:To reduce the apparent specific gravity of a cushioning paper material and solve the trouble caused by the paper chips by a method wherein a plurality of cylindrical or rectangular parallelepiped small paper pieces are bonded to the one side of a base paper material approximately at predetermined spaces and another piece of the base material is bonded to the other sides of the small paper pieces. CONSTITUTION:A plurality of cylindrical or rectangular parallelepiped small paper pieces 1 which can absorb a static or dynamic load, when exerted thereon, by their elastic or plastic deformation are bonded to the one side of a base paper material 8 extending mainly in the two-dimensional direction approximately at predetermined spaces P. Another base material 8 is then bonded to the other sides of the small cushioning paper pieces 1 to form a structure of three or more layers. The small cushioning paper pieces 1 are made by winding single faced corrugated cardboard around itself and cutting the resulting roll crosswise. The relation between the height H and the diameter D of the small cylindrical paper piece 1 is expressed preferably by H<2D. The relation between the space P, the height H and the diameter D is expressed preferably by P-D>H/2 when the small paper piece 1 is used for packaging an article or as billing material for gaps.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The present invention relates to a cushioning material for packaging paper quality.

[0002]

[Prior art]

Conventionally, foamed plastic blocks or loose cushioning materials have been widely used as cushioning materials. But,
In recent years, users have become shunned by foamed plastics that generate high calories upon incineration without being decomposed naturally when they are considered to be buried in the soil or incinerated as a treatment after use. In particular, the rosette-shaped cushioning material has a problem that when it is incinerated in a general incinerator, irritating odor and black smoke are generated because the main material is expanded polystyrene. The inventors have already proposed, as Japanese Patent Application No. 3-47218, a corrugated cardboard laminate obtained by winding a single-sided corrugated board in a cylindrical shape in multiple layers, or a processed laminated material obtained by slicing the laminate into a certain thickness, and Japanese Patent Application No. 3-355305. As a proposal, a loose cushioning material using the processed laminated material, and a paper-based cushioning material in which one surface of the processed laminated material is constrained by a base material having a two-dimensional main extension.

These single-faced corrugated boards are wound in a cylindrical shape, or laminated ones are cut or cut to form a block-shaped cushioning material,
Alternatively, when it is used as a loose cushioning material, paper dust is remarkably generated on the cut surface, which is not suitable for packing in precision machines and the like. Also, the apparent specific gravity of the A flute corrugated board laminate, which is usually used frequently, is about 100 kg / cubic meter, and a paper-made cushioning material such as Japanese Patent Application No. 3-3.
The apparent specific gravity of the 55305 loose cushioning material is about 20 kg /
The cubic meter is still heavier than the apparent specific gravity of the expanded polystyrene foam cushioning material of about 9 kg / cubic meter. In order to solve this problem, a method of reducing the basis weight of the base paper or reducing the amount of adhesive applied was also considered, but it could not be put to practical use as it causes the strength of the corrugated board laminate to decrease. .

[0005]

A paper quality cushioning material having a reduced apparent specific gravity and producing no paper dust is provided.

[0006]

The paper-made cushioning material of the present invention, the raw sheet which is the material thereof, the substrate, the columnar material, the paper-made cushioning material small pieces and the like will be described with reference to FIGS. 1 to 15.

[0007]

[Figure 1]

FIG. 1 is a perspective view showing an embodiment of the paper cushioning material of the present invention. 1 is an example of a small piece of paper-made cushioning material, which is obtained by winding a single-sided corrugated cardboard into a slice (hereinafter, referred to as a slice).
It is abbreviated as a paper-made cylindrical small piece 1. ), And 8 is a base material (hereinafter, abbreviated as the base material 8) having a main spread in the two-dimensional direction, and dotted lines running vertically and horizontally on the surface of the base material 8 indicate perforations. Although it is wound in a cylindrical shape in FIG. 1, it is not limited to this. For example, it may be a quadrangle or a pentagon.

Further, H is the height of the paper-made cylindrical small piece 1,
D is the diameter of the paper-made cylindrical small piece 1, and P is the paper-made cylindrical small piece 1.
The following shows the intervals at which the base material 8 is attached to the base material 8. At this time, the relationship between the height H and the diameter D of the paper-like cylindrical small piece 1 is H <2D if H <2D.
≦ (2/3) D is desirable. If H ≧ 2D, when a component force parallel to the cut surface direction of the paper-shaped cylindrical small piece 1 is generated, the paper-shaped cylindrical small piece 1 easily falls down with respect to the surface of the base material 8. Function is diminished. Further, the relationship between the interval P at which the paper-like cylindrical small piece 1 is attached to the base material 8 and the height H and the diameter D of the paper-like cylindrical small piece 1 is sufficient as long as a cut product is laid on the top and bottom. If you want to wrap things or use them as filling in gaps, if possible, PD> H / 2
Is desirable. This is for facilitating bending of corners.

[0010]

[Fig. 2]

FIG. 2 shows a columnar material 1 which is a material for the paper-like cylindrical small piece 1. At this time, the stepping rate x of the single-sided corrugated board 4
Is in the range of 1 ≦ x ≦ 2.5, more preferably 1 ≦ x ≦ 2, and the basis weight of the core raw paper 5 and the liner raw paper 6 is 20.
Depending on the application, it can be selected from ~ 300 g / square meter. Considering the special case of x = 1, this single-sided corrugated board means that the core raw paper 5 and the liner raw paper 6 are in close contact, that is, it means a paper tube. If 2.5 <x, the corrugated space of this single-sided corrugated board 4 is too narrow and the corrugated space is too tall. Therefore, the corrugate is collapsed when it is rolled into the columnar material 1, which makes it difficult to manufacture. .

In addition to the above single-sided corrugated board 4, soft paper having a substantially parallel projecting shape (trade name "Piropack" manufactured by Marusan Paper Manufacturing Co., Ltd.),
Single-faced corrugated cardboard with creases at regular intervals to give flexibility in the direction perpendicular to the corrugated
(Made by Tanakaya) or the like can be used instead of the single-sided corrugated board 4.

As the adhesive for manufacturing the columnar material 1 and the adhesive for bonding the paper-like cylindrical small piece 1 to the base material 8, vinyl acetate resin adhesive, starch paste, rubber adhesive, acrylic resin adhesive are used. Agents, PVA resin adhesives and the like can be used.

The basis weight of the base material 8 can be selected from the range of 2.5 to 500 g / square meter according to the application. As the material, crepe paper, wadding, embossed paper, liner base paper, core base paper, hatron paper, kraft paper, thin paper, soft paper with approximately parallel projections (trade name "Piropack" made by Maruzan Papermaking), right angle to corrugated It is possible to use single-sided corrugated cardboard (trade name “Kuredan” made by Tanakaya) having creases at regular intervals in order to have flexibility in the direction, and any other kind of paper. Another name for crepe paper, which is also called wrinkled paper, is a type of embossed paper with wrinkle-shaped irregularities. Wadding refers to a stack of a plurality of thin crepe papers that are commonly used for tissue paper. If crepe paper or wadding is used as the base material, no wrinkles are generated during use and the appearance of the packaging form is not impaired. If wadding is used as the base material, it can be used for packaging items such as furniture and works of art that are not susceptible to scratches. Here, even when crepe paper or wadding is used as a base material for a multi-layered paper, the crepe paper or wadding has a surface opposite to the surface of the base material 8 to which the paper cushioning material small pieces are adhered (hereinafter, referred to as an outer side). The object is achieved as long as it is exposed to the surface. In this way, the base material can be selected according to the application. The raw material for these papers may be wood pulp or non-wood pulp such as kenaf pulp containing seaweed as a main raw material or bagasse pulp containing sugar cane as a main raw material. That is,
The above-mentioned “all kinds of paper” includes wood paper and non-wood paper. In addition to the above, this non-wood paper shall also include synthetic fiber woven paper and synthetic paper. Hereinafter, the expression "all kinds of paper" has the same meaning. Further, as for the perforations of the base material 8, as shown in FIG. 1, the perforations are not limited to those that enter the paper-like cylindrical small piece 1 in units of length and width. The spacing between perforations and the pitch of the perforations themselves can be selected according to the application.

[0015]

[Figure 3]

[0016]

[Figure 4]

[0017]

[Figure 5]

When the paper-like cylindrical small pieces 1 are attached to the base material 8, the arrangement is not limited to the square arrangement shown in FIG. 3, but the rectangular arrangement shown in FIG. 4 or the diamond arrangement shown in FIG. Is desirable. With the rectangular arrangement as shown in FIG. 4, it is possible to fold vertically / horizontally, which is suitable for use as a stuffing. It is also easy to insert perforations. On the other hand, in the case of the rhombus arrangement as shown in FIG. 5, when bent, the paper-like cylindrical small piece 1 is bent, and the bent paper-like cylindrical small piece 1 protects a corner portion of the packaged object. Therefore, it is particularly suitable for packaging such as furniture in which the corners need to be particularly protected. Thus, a rectangular array or a square array can be selected according to the application. Here, the rectangular array includes a square array, and the rhombic array includes a parallelogram array and a trapezoidal array that are slightly deviated from the rhombus in the strict sense of the word. In addition,
In the packaging of furniture and the like described as a suitable example of the diamond-shaped arrangement, the paper cushioning material pieces preferably have a shape satisfying D> 4H, and wadding is preferably used on the outer surface of the base material.

[0019]

[Figure 6]

[0020]

[Figure 7]

[0021]

[Figure 8]

FIG. 6 shows another embodiment of the paper cushioning material of the present invention. The substrate 8 is the same as in the first embodiment. The paper-made cylindrical small piece 1 shows an example corresponding to the claims, and as shown in FIG. 7, the corrugated core paper 5 having the inclination angle A of 10 to 80 degrees in the flow direction, and the core raw paper 5 One-sided corrugated sheet 7 composed of liner base paper 6 having a slightly wider adhesive margin 9 (hereinafter, referred to as
It is abbreviated as the original sheet 7. 8) as shown in FIG. 8, a paper sheet is spirally wound to form a paper tube 10 (hereinafter abbreviated as paper tube 10), and the columnar material 2 spirally wound is cut into a ring (hereinafter referred to as paper quality). It is abbreviated as a cylindrical small piece 1.). Since there is the inclination angle A of 10 to 80 degrees, when the columnar material 2 is manufactured, there is no step at the end of winding like the one-sided corrugated board shown in FIG. Will be possible. In addition, glue 9
If there is, it is possible to wind this part while overlapping part or all of it, and you can obtain satisfactory results in terms of strength and aesthetics.

In FIG. 6, H is the height of the paper-like cylindrical small piece 1, D is the diameter of the paper-like cylindrical small piece 1, and P is the interval at which the paper-like cylindrical small piece 1 is attached to the substrate 8. These heights H,
The relationship between the diameter D and the interval P is the same as the relationship between the height H, the diameter D and the interval P of the paper-like cylindrical small piece 1 of the first embodiment, and H <2D, preferably H ≦ (2/3) D. And P-
The relationship of D> H / 2 is desirable.

[0024]

[Figure 9]

[0025]

[Figure 10]

For the same reason as in the case of the single-faced corrugated board 4 of the first embodiment, the stepping ratio x of the original sheet 7 which constitutes the columnar material 2 which becomes the element of the paper-like cylindrical small piece 1 is 1 ≦ x ≦ 2.5, and if possible. The range of 1 ≦ x ≦ 2 is preferable. The base paper for the central paper tube 10, the core base paper 5, and the liner base paper 6 have a basis weight of 20 to
From all kinds of paper of 300 g / square meter,
It can be selected according to the application. Further, the paper tube 10 at the center is not always a cylinder. It may have a rectangular cross section. However, in this case, the cross section is preferably a regular polygon.
An example of this case is shown in FIGS. 9 and 10.

As the adhesive for manufacturing these columnar materials 2 and the adhesive for laminating the paper-like cylindrical small piece 1 on the base material 8, as in the first embodiment, a vinyl acetate resin adhesive, A starch paste, a rubber adhesive, an acrylic resin adhesive, a PVA resin adhesive, etc. can be used.

As with the first embodiment, the substrate 8 can also be selected from among all types of paper having a basis weight in the range of 2.5 to 300 g / square meter according to the application. Further, the perforations of the base material 8 are not limited to those perforated vertically and horizontally in the unit of one piece of the paper-like cylindrical small piece 1 as in the first embodiment. The spacing between perforations and the pitch of the perforations themselves can be selected according to the application.

[0029]

FIG. 11

[0030]

[Fig. 12]

Further, the paper-made cylindrical small piece 1 used for the paper-made cushioning material does not have the paper tube 10 as shown in FIG.
A columnar material obtained by spirally winding only the original sheet 7 or a columnar material obtained by winding the original sheet 7 in a double spiral around the paper tube 10 as shown in FIG. 12 may be used. Good. However, when a relatively large pressure is applied from the outside, the corrugate in the innermost layer is crushed. Therefore, when the original sheet 7 is wound around the paper tube 10 in multiple layers, it is preferable that the thickness is double or less.

Also in these paper-based cushioning materials, the base material 8 has a basis weight of 2.5 to 5 as in the second embodiment.
It is possible to select from among all kinds of paper in the range of 300 g / square meter according to the application. Also,
Similarly to the second embodiment, the perforations of the base material 8 are not limited to those that enter the vertical and horizontal units of the paper-like cylindrical small piece. The spacing between perforations and the pitch of the perforations themselves can be selected according to the application.

[0033]

[Fig. 13]

[0034]

FIG. 14

As described above, in FIGS. 1 to 12, the paper quality cushioning material using the paper quality cylindrical small pieces has been described. However, as shown in FIGS. 13 and 14, instead of the paper quality cylindrical small pieces,
A rectangular parallelepiped of laminated corrugated board (hereinafter abbreviated as rectangular parallelepiped 11) may be used. In this case, the dimension of the bottom side of the rectangular parallelepiped 11 is W
1, W2 (here, the longer base is defined as W1 and the shorter base is defined as W2.) The height h of the rectangular parallelepiped 11 and the interval p1 at which the rectangular parallelepiped 11 is bonded to the base material W1, W
The relationship of 2 is 1 ≦ W1 / W2 ≦ 2, preferably W1 = W2
Is desirable. If the dimensional difference between W1 and W2 is significant, it is not preferable because it causes a difference in workability in the longitudinal direction and the lateral direction when used as a packaging material. Further, the relationship between the height H of the rectangular parallelepiped 11 and the shorter base W2 is H <2W2, preferably H ≦ (2 /
3) W2 is desirable. If H ≧ 2W2, base material 8
When a component force parallel to the bonding surface of and is generated, the component easily falls against the surface of the base material 8, and the buffer function is diminished.
Further, it is only necessary to lay a cut product on the top and bottom, but when wrapping an object to be packaged or using it as a filling in a gap, if possible, P-W1> H / 2 and P-W2> H / 2 are desirable.
This is for facilitating bending of corners and the like.

The basis weight of the core raw paper or liner raw paper of the single-sided corrugated board used for the rectangular parallelepiped 11 can be selected from the range of 20 to 300 g / square meter according to the application.
In addition to the above-mentioned single-sided corrugated board, a laminated product such as a soft paper (trade name “Piropack” manufactured by Maruzan Paper Manufacturing) having a substantially parallel projection shape can also be used as the rectangular parallelepiped 11.

[0037]

FIG. 15

The paper quality cushioning material described in FIGS. 1 to 14 does not necessarily have to have the three-layer structure of the base material, the paper quality cushioning material piece, and the base material. As shown in FIG. 15, a 5-layer structure of a base material, a paper-made cushioning material piece, a base material, a paper-made cushioning material piece, and a base material, or an N-layer structure of more than that may be used. However, N is an odd number of 3 or more.

As described above, the paper-made cushioning material has been described with reference to FIGS. 1 to 15. However, by applying an adhesive material to one or both outer surfaces of the paper-made cushioning material, the packaged object is packed, Alternatively, when the packaged item is packed in a box or the like, it can be easily positioned by an adhesive. Also,
In addition to the above advantages, it is possible to display a company name, a product name, and the like in addition to the above advantages by printing characters or designs with a paint containing an adhesive instead of the adhesive alone.

As the pressure-sensitive adhesive used for the above-mentioned applications, a modified vinyl acetate-based, acrylic resin-based, rubber-based, higher alcohol-based, polybutene-based, fatty acid ester-based pressure-sensitive adhesive can be used. In addition, a water paste such as PVA, which produces tackiness by applying water, may be used. Further, in the paint, any dye or pigment may be used as long as it can be easily mixed with these adhesives. Therefore, it is preferable to use a water-based paint for the water-based pressure-sensitive adhesive.

[0041]

FIG. 16

[0042]

FIG. 17

FIG. 16 and FIG. 17 show examples of applications of the paper-made cushioning material in which characters or patterns are printed with a paint coated with an adhesive or mixed with an adhesive. FIG. 16 shows a case where two or more paper-made cushioning materials are coated with a pressure sensitive adhesive or coated with a pressure sensitive adhesive on a required portion or the whole surface of one side of the base material 8 to print characters or patterns, and The surfaces having are attached to face each other to form a bag, and the object to be packaged is put in this. Conventionally, since it cannot be heat-sealed like a resin sheet, it has been difficult to make a bag or the like with a sheet of paper alone, but since an adhesive is applied,
It can be easily processed into a bag. In FIG. 17, one sheet of cushioning material is cut out in a cross shape, and only one side can be seen in FIG. 17, but the adhesive is applied to both sides of the base material 8 or a paint containing an adhesive is used to print characters or 1 shows an embodiment in which a design is printed. Install paper-shaped cushioning material cut out in a cross shape in advance in the outer box. The adhesive-bearing surfaces 12 to 16 of the paper cushioning material adhere to the bottom surface and side surfaces of the outer box. The article to be packaged is placed on this, and the portions 13 to 16 with which the side surfaces of the article to be packaged are in contact are attached. Then, the tip end portions 13 to 16 overlap each other on the upper surface of the packaged object, and the paper cushioning material is adhered and fixed to both the outer box and the packaged object. Since the paper cushioning material is fixed by the adhesive material, it is possible to prevent the packaged object from rattling in the outer box. Moreover, it is not necessary to add extra padding to the upper space. Furthermore, when packing a plurality of articles to be packaged with one sheet of cushioning material, it is not necessary to bind the articles to be packaged with a string or tape because the bottom surface, side surface and top surface are fixed. Instead of using the paper-made cushioning material cut out in a cross shape, two paper-made cushioning materials cut out in a rectangular shape may be crossed and used.

[0044]

In the paper quality cushioning material according to the present invention, the cut surface of the paper is closed with another paper, and both are fixed by the adhesive, so that the generation of paper dust can be almost completely prevented. Further, by applying an adhesive material or a coating material containing an adhesive material on the outer surface, it is possible to easily fix the material on the article to be packaged and improve the workability of the packaging work.

[0045]

[Table 1]

[0046]

FIG. 18

[0047]

Example 1 In the paper-made cushioning material described with reference to FIG. 1, a single-sided corrugated board 4 having a basis weight of the core raw paper 5 and liner raw paper 6 of 50 g / sq.
What is cut to 40 mm is sprinkled to an outer diameter of 35 mm, width 15
The product was cut into mm pieces to obtain paper-like cylindrical small pieces. The sliced cut surface of this paper-like cylindrical piece is attached to a base material with a basis weight of 50 g / square meter and perforated vertically and horizontally, and the cut surface on the opposite side is similarly perforated. 8
Pasted together. The distance between perforations was 75 mm in both length and width. The upper and lower perforations were adjusted to a range of 2 mm. Perforations may be made after the base material is applied. In addition, starch paste was used for all bonding.

Table 1 shows the results of the vibration test of Example 1 and FIG. 18 shows the results of the compression test.

[0049]

Example 2 In the paper-made cushioning material described in FIG. 3, kraft paper having a width of 50 mm and a basis weight of 100 g / square meter is spirally wound at an inner diameter of 24 mm and an adhesion margin of 5 mm at an angle of 22.5 degrees to form a paper tube 10. Got Comprised of 100 g / m2 core raw paper 5 and 100 g / m2 liner raw paper, stepping ratio x = 1.3, corrugated tilt angle 22.5 °, corrugated width 45 mm, adhesive margin 9 The original sheet 7 having a width of 15 mm was spirally wound around the outer side of the paper tube 10 and attached to obtain a columnar material having an outer diameter of 40 mm. This columnar material was sliced into 15 mm wide pieces to obtain paper-like cylindrical small pieces. The sliced cut surface of this paper-like cylindrical piece was attached to the base material 8 having a basis weight of 50 g / square meter, and the same perforated base material 8 was attached to the opposite sliced cut surface. Perforations are 80 vertically and horizontally
mm. In addition, starch paste was used for all bonding.

Table 1 shows the results of the vibration test of Example 2 and FIG. 18 shows the results of the compression test.

[0051]

[Comparative Example 1] A single-faced corrugated board composed of a liner base paper having the same basis weight as a core base paper having a basis weight of 140 g / square meter was laminated / bonded to obtain a laminated corrugated board. The corrugation was A flute, and the boring rate was 1.6. The amount of starch paste used for lamination / bonding was 100 g / square meter. This laminated corrugated board was used so that the load acts in the flute direction, and cut into a required size to obtain a test piece.

Table 1 shows the results of the vibration test of Comparative Example 1 and FIG. 18 shows the results of the compression test.

[0053]

[Comparative Example 2]

The columnar material used in Example 1 had a width of 10 mm.
It was sliced into round pieces and used as a cushioning material.

Table 1 shows the results of the vibration test of Comparative Example 1 and FIG. 18 shows the results of the compression test.

[0056]

COMPARATIVE EXAMPLE 3 A commercially available polystyrene loose cushioning material was used for comparison. The shape was an elongated string shape having a diameter of 3 mm and a length of 50 to 150 mm.

The vibration test results of Comparative Example 3 are shown in Table 1, and the compression test results are shown in FIG.

[0058]

【Test method】

[0059]

[Vibration test] External size 285 mm x 220 mm x 170 m
m, 5 kg in weight, the inner size is 305 mm x 310
The sample was put in an outer box of mm × 300 mm, and the cushioning materials of Examples 1 and 2 and Comparative Examples 1 and 2 were placed in the gaps, and the amplitude was 2
The sample was vibrated for 2 hours under conditions of 0 mm and a frequency of 400 cycles / minute, and the dimensions of the gap before and after the test were recorded. Also,
The weight of cushioning material required to fill the gap was also recorded. As a remark, workability was also recorded.

[0060]

[Compression test] Tokyo Tenkiki Seisakusho Co., Ltd. "Tensile strength tester" No. 20160 machine, bottom 150 mm x 1
Put the test piece in a container with a depth of 50 mm and a depth of 50 mm.
A load of 00 kg was applied and the strain at that time was measured.

In Table 1 and FIG. 18, as examples and comparative examples of the paper-based cushioning material of the present invention, commercially available polystyrene-made cushioning material, paper-made cushioning material of Japanese Patent Application No. 3-355305, and corrugated board are used. The vibration and compression test results of the laminated block are shown.

[0062]

[Results] As can be seen from Table 1 and FIG. 18, Comparative Example 1
In the compression test, the laminated corrugated cardboard of No. 1 had a small strain with respect to the load, and the result was slightly better than other samples. As a result of the vibration test and the compression test, no significant difference was observed between the other measurement targets. Therefore, it can be considered that the four members of Example 1, Example 2, Comparative Example 2, and Comparative Example 3 have almost the same buffering performance. The laminated corrugated board of Comparative Example 1 is slightly superior to the other three in terms of compression rigidity, but has a general drawback that it is not versatile and paper dust is generated. Therefore, the superiority or inferiority of the cushioning material is judged by the weight of the cushioning material required to fill the gap and the workability of the packing work. Example 1 and Example 2
The paper-made cushioning material of the present invention has a high workability as compared with the paper loose cushioning material of Comparative Example 2 and the polystyrene loose cushioning material of Comparative Example 3 in that small pieces do not scatter during packing. Indicated. Further, also in terms of generation of paper dust, Example 1
The paper-based cushioning material of Example 2 hardly generated paper dust, and showed far better results than the laminated corrugated board of Comparative Example 1 and the loose paper cushioning material of Comparative Example 2. Also, in terms of weight, it is slightly inferior to the polystyrene loose cushioning material of Comparative Example 3, but it can be made lighter than the laminated corrugated board of Comparative Example 1 and the paper loose cushioning material of Comparative Example 2. . Due to problems of post-treatment such as incineration and burial in soil, the paper cushioning materials of Examples 1 to 2 are superior to the polystyrene loose cushioning material of Comparative Example 3. From the above results, the paper-based cushioning material of the present invention has excellent characteristics as compared with both the paper-made cushioning material that has been conventionally proposed and the polystyrene-made cushioning material that is currently used.

EFFECTS OF THE INVENTION The paper cushioning material of the present invention is more flexible than a conventional block such as a laminated corrugated board, and therefore can be applied to various shapes of objects to be packaged. It can be wrapped, stuffed and laid. Since the paper-based cushioning material of the present invention does not emit paper dust, it is also suitable for packaging electric appliances and the like. The paper cushioning material of the present invention has a small apparent specific gravity, and thus is lightweight and economical. Unlike the loose cushioning material, the paper cushioning material of the present invention does not scatter after use and is easy to discard. In addition, since it is made of paper, it is easy to incinerate and the calories burned are low. When the crepe paper or wadding is used on the outer surface of the base material, the paper cushioning material of the present invention does not cause wrinkling that occurs during use and does not impair the appearance of the packaging form. If wadding is used, it can be used for packaging items such as furniture and works of art that are not susceptible to scratches. INDUSTRIAL APPLICABILITY The paper cushioning material of the present invention can be fixed to an article to be packaged or to an outer case by applying a pressure sensitive adhesive to the outer surface or printing a character or a pattern with a paint mixed with a pressure sensitive adhesive. It's easy. It can also be used in the form of a bag. In addition, by printing characters or designs with paint containing an adhesive material, it is possible to easily display the company name, product name, and the like. The paper-based cushioning material of the present invention can be easily cut into arbitrary dimensions according to the application, if perforations are provided. INDUSTRIAL APPLICABILITY The paper cushioning material of the present invention can be folded vertically / horizontally by arranging the paper cushioning material pieces in a rectangular arrangement, and is suitable for use as a stuffing. It is also easy to insert perforations. The paper-made cushioning material of the present invention, if the paper-made cushioning material pieces are arranged in a rhombus, when folded, the paper-made cushioning material pieces will be bent at the bent paper-made cushioning material pieces, and the bent paper-made cushioning material pieces will be bent at the corners of the package. Protect. Therefore, it is suitable for the packaging of furniture, etc., where the corners need to be particularly protected.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the paper cushioning material according to claim 2,
FIG. 2 shows a columnar material used as an element of the paper-like cylindrical small piece used therein. FIG. 3 shows a state in which small pieces of paper cushioning material are attached to a base material in a square arrangement, FIG. 4 shows a state in which they are also attached to a base material in a rectangular arrangement, and FIG. The state pasted on the base material is shown respectively. FIG. 6 shows claim 3.
A perspective view of the embodiment of the paper-made cushioning material described, FIG. 7 shows an original sheet constituting a columnar material which is an element of the paper-like cylindrical small piece used therein, and FIG. 8 shows the columnar material. FIGS. 9 and 10 show a special case in which the stepping ratio of the core raw paper is x = 1 in claims 2 and 3. FIG. 11 shows an example in which the paper-made cushioning material of claim 3 does not have a paper tube at the center of the columnar material which is the element of the paper-shaped cylindrical small piece. FIG. 12 shows an example in which, in the paper-made cushioning material according to claim 3, an original sheet of a columnar material which is an element of a paper-made cylindrical small piece is double wound.
13 and 14 are perspective views of another embodiment of the first aspect. FIG. 15 shows an example in which the paper-made cushioning material described in claim 3 has a multilayer structure. 16 and 17 show one application example of the paper-based cushioning material coated with the pressure-sensitive adhesive or the paint containing the pressure-sensitive adhesive according to claim 4, respectively. FIG. 18 shows the result of the compression test of the paper cushioning material.

[Explanation of symbols]

1 Cylindrical small pieces 2 Columnar material 3 Paper tube consisting of two or more layers of paper 4 Raw sheet 5 Core raw paper 6 Liner raw paper 7 Adhesive material 8 Base material 9 Adhesion margin 10 Paper tube made of single layer paper 11 Laminated corrugated board A rectangular parallelepiped 12 A bottom surface 13 A portion contacting the side surface of the packaged object 14 A portion contacting the side surface of the packaged object 15 A part contacting the side surface of the packaged object 16 A part contacting the side surface of the packaged object 17 Printed by a paint containing an adhesive material Letter or design D Diameter of paper-like cylindrical piece H Height of paper-like cushioning material piece P Distance between pasting paper-like cushioning material piece to base material 8 A Corrugation inclination angle W1 Longer bottom side of rectangular parallelepiped 11 W2 Shorter rectangular parallelepiped 11 Bottom of

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kozo Kusomochi 1-47-1 Kawakami Sangyo Co., Ltd. 11-11, Minato-ku, Nagoya, Aichi Prefecture

Claims (8)

[Claims] 1. A static or dynamic load having a cylindrical or rectangular parallelepiped shape on one surface of a paper-like base material (hereinafter abbreviated as "base material") having a main spread in a two-dimensional direction at substantially regular intervals. When a small amount of paper is added, a small piece of paper (hereinafter referred to as a small piece of paper cushioning material) that can absorb the static load or dynamic load due to elastic deformation or plastic deformation is attached, and further, a small piece of paper cushioning material. A paper-made cushioning material composed of a base material, a paper-made cushioning material piece, a three-layered structure of a base material, or a multi-layered structure in which a base material is laminated on the opposite side of the above. 2. The paper-made cushioning material according to claim 1, wherein the paper-made cushioning material piece is a paper-made cylindrical piece or paper tube obtained by winding a single-sided corrugated board and then cutting it into a slice, or a laminate of both. Material. 3. A small piece of paper-made cushioning material obtained by spirally winding a paper sheet into a paper tube, and a corrugated core raw paper having an inclination angle of 10 to 80 degrees with respect to the flow direction, and A columnar material with a diameter of 15 mm to 200 mm obtained by spirally winding a single-sided corrugated sheet having a stepping ratio in the range of 1 to 2.5, which is composed of a liner raw paper having a slightly wider adhesive margin than the core raw paper. The paper-made cushioning material according to claim 2, wherein the paper-made cushioning material is a thin piece of paper-like cylindrical piece, and the basis weight of the substrate is 2.5 to 300 g / square meter. 4. A crepe paper or an outer surface of the substrate,
The paper-made cushioning material according to claim 1, wherein wadding is used. 5. The paper cushioning material according to claim 1, wherein an adhesive or a coating material containing an adhesive is applied to the outer surface of the base material. 6. The paper cushioning material according to claim 1, wherein the base material is provided with perforations vertically and horizontally at arbitrary intervals. 7. The paper cushioning material according to claim 1, wherein the arrangement of the paper cushioning material pieces is a rectangular array. 8. The paper-made cushioning material according to claim 1, wherein the arrangement of the paper-made cushioning material pieces is a rhombus array.