JPH0513966U - Cushioning material made from single-sided corrugated paper - Google Patents

Abstract

(57) [Summary] [Structure] A single-sided corrugated paper is spirally wound around the direction of the flute and is made into a columnar body by adhesion or adhesion. As it is, or after it is processed into a desired shape, it is used as a cushioning material in packaging and transporting articles. [Effect] This cushioning material withstands a high load in the axial direction and exhibits an isotropic cushioning property in all directions in the direction perpendicular to the axis.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cushioning material for use in packaging or transportation of articles, which is made of a single-sided corrugated paper sheet formed by bonding a single corrugated core and a single liner.

[0002]

[Prior Art]

 As a cushioning material used for packaging and transporting various articles, foamed plastic molded articles are preferred. However, as is well known, plastic is difficult to handle as waste, and there are various difficulties in recovery and reuse, and when incinerated, damage to the furnace can be accelerated and harmful gas can be generated. It remains even if it is reclaimed.

On the other hand, paper such as corrugated board is relatively easy to collect and reuse, and there is no problem in incineration or landfill. It has already been proposed to use corrugated paper as a cushioning material other than a packaging box. For example, Japanese Utility Model Laid-Open No. 61-188922 “Core Pallet” uses a block made by stacking a number of single-sided corrugated paper sheets on the pallet member on which the load is placed.

In order to use a laminate of single-sided corrugated paper as a general cushioning material, it is necessary to cut into a blank shape according to an object and stack them, so that it must be mass-produced. If it doesn't pay. In addition, the cushioning effect of the single-sided corrugated paper laminate is anisotropic and can be exerted only in the laminating direction, and if it is intended to have a cushioning function in other directions, at least two or three Must be combined in different directions.

[0005]

[Problems to be solved by the device]

 The purpose of the present invention is to take advantage of the advantage of single-sided corrugated cardboard as a cushioning material, that is, that it can be recovered and reused and that there is little problem of disposal. It is an object of the present invention to provide a cushioning material made of single-faced corrugated cardboard, which is made higher in height and makes it easier to form a cushioning material shape according to an object.

[0006]

[Means for Solving the Problems]

 The cushioning material made of single-sided corrugated paper according to the present invention is basically a single-sided corrugated paper (1) wound in a spiral shape around the flute direction as shown in FIGS. A cushioning material for use in packaging or transportation of an article, which is made of a columnar body obtained by fixing a core core (2) and a liner (3) that are in contact with each other on the outermost periphery by adhesion or adhesion ..

[0007] The winding method may be either with or without the center core, but in general, the inner core provides a material having a liner surrounding the outer periphery, which is easier to handle. Further, the solid columnar body shown in FIG. 1 may be densely wound from the central portion, or a hollow columnar body as shown in FIG. 2 may be formed by winding it around an appropriate mandrel. Good.

The adhesive or pressure-sensitive adhesive may be provided on the outermost side of the columnar body, but for the convenience of the work, it may be easier to apply it on the entire surface. You can choose any adhesive or adhesive. The aqueous polyvinyl acetate emulsion, which is commonly used to bond wood and paper, is also useful here.

By selecting the cross-sectional shape of the mandrel at the beginning of winding or by controlling the shape from the outside while winding, the columnar body can have a shape other than a circular cross section. Therefore, the cushioning material of the present invention includes a columnar body whose cross section wound in a spiral shape is circular, right-angled triangle, square, right-angled quadrangle, rhombus or regular hexagon. The example shown in FIG. 3 has a substantially square cross section.

The cushioning material of the present invention is obtained by cutting out from a columnar body having a circular cross section shown in FIG. 1 or in some cases shown in FIG. The mainstream of these is a rhombus or regular hexagonal columnar body or truncated pyramid. FIG. 4 shows an example of a right-angled triangular section, and FIG. 5 shows an example of a truncated cone.

Useful as a cushioning material is often provided with notches shaped to correspond to the shape of the ridges or corners of the article to be packaged or shipped. The one shown in FIG. 6 is an example of the former, and the cross section has an angled shape. The one shown in FIG. 7 is an example of the latter, which receives the corners of a cube or a rectangular parallelepiped. It is also possible to provide the same notch as in FIG. 7 with respect to the example shown in FIG.

8 has a fan-shaped cross section in which a columnar body having a circular spiral cross section is vertically divided into four equal parts, and has a similar fan-shaped cross section and a smaller fan-shaped cross section. It is a cushioning material that has notches with a length that does not reach the full length of. This type is advantageous because it is easy to manufacture and there is no material loss.

As a cushioning material having a function close to that shown in FIGS. 7 and 8, the embodiment of FIG. 9 has a unique existence meaning in that there is no material loss during manufacture. This cushioning material is obtained by cutting a columnar body having a circular cross section into a spiral shape, and making notches along three planes that are inclined at an angle of 45 ° with respect to the axis and intersect at an angle of 90 °. And has notches corresponding to the corners of the rectangular parallelepiped. The above-mentioned notch can be realized by pushing a triangular blade having a tip of 90 ° into the columnar body from three directions, in a direction inclined by 45 ° with respect to the axis.

The cushioning material of the present invention as described above is, if desired, wrapped by a skin pack packaging using a combination of a skin pack film and a mount, a shrink packaging using a shrink film, or a stretch packaging using a stretch film. It can also be used as a cushioning material. At this time, a foamed plastic sheet or a foamed plastic sheet can be used as one or both of the skin pack film and the mount, and as the shrink film or stretch film.

The cushioning material of the present invention can also be used in the form of a cushioning material in which any one of the above-mentioned cushioning materials is combined with another material having a cushioning function. Various other materials having a cushioning function can be used. For example, a large number of air-foamed plastic sheets, which are commercially available under the trade names of “air bag” and “bubble sheet”, are available. A typical example is a cushioning material made of plastic film having a chamber. Of course, foamed plastic sheets or blocks can also be suitably combined. FIG. 10 shows an example combined with an extruded foamed plastic molded product, and FIG. 11 shows an example combined with an aerated plastic sheet.

Further, the cushioning material of the present invention is used not only one by one but also by combining two or more parts into a shape according to the shape of the article to be packaged or transported, and these parts are It can also be used in the form of a cushioning material which is integrated by adhesion or adhesion, or packaging. FIG. 12 shows an example in which the cushioning material of FIG. 7 is arranged on both sides of the cushioning material of FIG. 6 and is integrated by shrink-wrapping.

An example of using the above-mentioned cushioning material is shown in FIG.

Two or three cushioning materials of various shapes described above are used integrally by adhering, adhering or sticking, or encapsulating so that the directions of the flutes of the single-faced corrugated paper are orthogonal to each other. You can also FIG. 14 shows an example in which two pieces are overlapped with each other and shows a high cushioning property in any of the three directions of XYZ.

The cushioning material of the present invention obtained by cutting the columnar body of single-sided corrugated paper may have paper dust generated by cutting, and if it is disliked, the above-mentioned packaging may be performed. However, as an alternative, you can spray paint onto the surface to reduce the generation of paper dust.

Here, the paint is not limited to a commonly used varnish or lacquer, and includes an adhesive and the like as long as it is useful for this purpose. For example, the water-based emulsion of polyvinyl acetate mentioned above as an adhesive penetrates into corrugated cardboard and hardens it, which not only prevents paper dust generation, but also serves to increase strength.

[0021]

[Action]

 If the single-faced corrugated paper is wound in a spiral shape to form a columnar body, a desired diameter can be obtained by adjusting the winding length, so that it is easy to make a cushioning material having a desired size.

Due to its structure, this columnar body has cushioning property in all directions in the direction perpendicular to the axis, that is, in the radial direction, and the cushioning capacity is also isotropic. Therefore, for example, the cushioning material having the shape shown in FIGS. 7 and 8 bears the load of the packaged article in the vertical direction and serves as a cushion in the horizontal direction to protect the article during transportation. The axial direction can be made similar to the radial direction by combining it with other cushioning material or by overlapping the flutes of the single-sided corrugated paper with different directions as desired.

[0023]

【Example】

 [Example 1] C5 / A flute single-sided corrugated cardboard flute piles were coated with polyvinyl acetate emulsion as an adhesive and wound to form a solid cylinder with a diameter of 70 mm, and then a cube with a side of 50 mm was cut out. It was This was compressed by a compression tester in the axial direction, and a stress-displacement curve was drawn. The compression speed is 10 mm / min. The results are shown in Fig. 15.

The same sample was subjected to a crushing test by repeating compression 5 mm and returning the pressure to zero, and the results shown in FIG. 16 were obtained. This graph shows that the cushioning material of the present invention has the property of undergoing stable deformation when subjected to repeated stress with respect to axial compression (in the direction of the flute), as well as when continuously compressed. There is.

[Example 2] A solid circular cylinder having a diameter of 70 mm prepared in Example 1 was processed into a truncated quadrangular pyramid having a bottom side of 70 mm, a top side of 30 mm, and a height of 50 mm. .. The results of a similar compression test performed on this are as shown in FIG.

[Example 3] A single-sided corrugated paper having C5 / A flute was wound into a solid cylinder having a diameter of 100 mm. This was vertically cut into two pieces, and four kinds of test pieces having heights of 25 mm, 50 mm, 75 mm and 100 mm were prepared. FIG. 18 shows the result of performing the same compression test on them. Even if the height of the cushioning material is different, the force to withstand the load is almost the same, and since the cushioning material is gradually crushed and crushed by the impact, if the height is large, the impact can be absorbed in comparison. In other words, this graph shows that the buffering effect lasts.

[0027]

[Effect of the device]

 Since the cushioning material of the present invention is obtained by processing a columnar material obtained by winding a single-sided corrugated paper in a spiral shape, a desired shape can be easily obtained without preparing special manufacturing equipment.

This cushioning material exhibits high load resistance in the axial direction of the columnar material, that is, in the flute direction of corrugated paper, and in the direction perpendicular to it, isotropically cushioning in all directions. Therefore, for example, when packaging or transporting an article, it is suitable for being applied to the ridges or corners thereof.

[Brief description of drawings]

FIG. 1 is a perspective view showing, together with a manufacturing process, a cushioning material made of single-sided corrugated paper according to the present invention and also a material that is processed into a cushioning material having another shape.

FIG. 2 is a perspective view showing another embodiment of the cushioning material and the cushioning material of the present invention different from FIG.

FIG. 3 is a perspective view showing an example of a cushioning material of the present invention.

FIG. 4 is a perspective view showing an example of a cushioning material of the present invention obtained by processing the material.

FIG. 5 is a perspective view showing another example of the cushioning material of the present invention obtained by processing.

FIG. 6 is a perspective view showing an example in which the cushioning material of the present invention has a notch aligned with a ridge of an article.

FIG. 7 is a perspective view showing an example of a cushioning material of the present invention having cutouts matching the corners of an article.

FIG. 8 is a perspective view showing another example of the cushioning material of the present invention having cutouts that match the corners of an article.

FIG. 9 is a perspective view showing yet another example of the cushioning material of the present invention having cutouts that match the corners of an article.

FIG. 10 is a perspective view showing a structure with a part cut away, showing an example in which the cushioning material of the present invention is combined with another cushioning material.

11 is a perspective view similar to FIG. 10, showing another example in which the cushioning material of the present invention is combined with another cushioning material.

FIG. 12 is a perspective view showing an example in which the cushioning material of the present invention is configured by combining two or more parts.

FIG. 13 is a perspective view showing an example of using the cushioning material of the present invention.

FIG. 14 is a perspective view showing an embodiment in which two cushioning materials of the present invention are stacked and integrated so that the directions of the flutes of single-faced corrugated paper are orthogonal to each other.

FIG. 15 is a graph of a stress-displacement curve, which is data of an example of the present invention and is obtained by applying a load from an axial direction to a cushioning material having a cubic shape.

FIG. 16 shows the data of the embodiment of the present invention.
The stress-displacement curve graph obtained by applying a load to the cushioning material of FIG.

FIG. 17 is a graph of a stress-displacement curve, which is data of an example of the present invention and is obtained by applying a load from an axial direction to a truncated quadrangular pyramid-shaped cushioning material.

FIG. 18 is data of an embodiment of the present invention, which was obtained by applying a load from an axial direction to a cushioning material having a semicircular section.
Graph of stress-displacement curve.

[Explanation of symbols]

 1 Single-sided corrugated paper 2 Core pile 3 Liner

Claims (13)

[Scope of utility model registration request] 1. An article obtained by winding a single-sided corrugated paper in a spiral shape around the flute direction as an axis and fixing at least the outermost periphery of a core core and a liner which are in contact with each other by adhesion or adhesion. A cushioning material made from single-sided corrugated paper for use in packaging or shipping. 2. The shock-absorbing material according to claim 1, wherein the spirally wound cross-section forms a columnar body having a circular shape, a right-angled triangle shape, a square shape, a right-angled quadrilateral shape, a rhombic shape, or a regular hexagonal shape. 3. A columnar body having a circular cross section, which is wound in a spiral shape, and is cut out to form a columnar body or a truncated pyramid body having a right-angled triangle, a right-angled quadrangle, a rhombus or a regular hexagon.
Cushioning material. 4. A cutout having a shape corresponding to the shape of a ridge or a corner of an article to be packaged or transported.
The cushioning material according to any one of 1 to 3. 5. A piece having a fan-shaped cross section which is similar to a piece having a fan-shaped cross section in which a columnar body having a spirally wound cross section is vertically divided into four equal parts, and has a fan-shaped cross section smaller than this, and a length which does not reach the entire length of the piece. The cushioning material according to claim 4, wherein the notch is provided. 6. A corner portion of a rectangular parallelepiped obtained by cutting a columnar body having a circular cross section in a spiral shape along three planes inclined at an angle of 45 ° with respect to its axis and intersecting each other at an angle of 90 °. The cushioning material of claim 1 having corresponding notches. 7. The cushioning material according to claim 1 is packaged by skin pack packaging using a combination of a skin pack film and a mount, shrink packaging using a shrink film, or stretch packaging using a stretch film. Cushioning material. 8. The cushioning material according to claim 7, wherein a foamed plastic sheet or a foamed plastic sheet is used as one or both of the skin pack film and the mount, the shrink film or the stretch film. 9. A cushioning material obtained by combining the cushioning material according to claim 1 with another material having a cushioning function. 10. The cushioning material according to claim 9, wherein a foamed plastic sheet is used as another material having a cushioning function. 11. A combination of two or more components,
8. The cushioning material according to claim 7, which has a shape corresponding to the shape of an article to be packaged or transported and which is formed by adhering or sticking these constituent parts together or by integrating them. 12. Two or three cushioning materials according to any one of claims 1 to 3, which are stacked so that the directions of the flutes of the single-sided corrugated paper are orthogonal to each other, and are bonded or adhered,
Or a cushioning material integrated by packaging. 13. The cushioning material according to claim 1, wherein a paint is sprayed on the surface.