JPH10203553A - Corrugated cardboard corner pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use multi-layer corrugated cardborad as the material for corner pads to avoid environmental pollution and facilitate recycling, by bending a single layer corrugated cardboard to a specified direction to form a square cylindrical columnar body having a multi-layer structure and providing a plurality of recesses which can be fitted, at the side face. SOLUTION: A corrugated cardboard sheet is rolled up to get a required thickness and the first protrusion and recession are formed at one side thereof to obtain a multi-layer currugated cardboard 20a. In the same way, a corrugated cardboard sheet is rolled up to get a required thickness and the second protrusion and recession are formed at one side thereof so as to fit to the first protrusion and recession. In this time, the protrusion and recession of the multi-layer corrugated cardboard have the same pitch and the recessed depth is made equal to the thickness of the multi-layer corrugated cardboard. Corrugated cardboard corner pads 10 obtained in this way made are put on the four ridge lines of an article to pack the article.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated cardboard corner pad, and more particularly to a corrugated cardboard corner pad disposed on a side edge of a large and heavy article to be packed.

[0002]

2. Description of the Related Art When transporting small and light articles to be packed, such as personal computers, the tops are most susceptible to damage. (In the case of a rectangular parallelepiped, protection of the apex at eight points, four points where the top and two sides intersect, and four points where the bottom and two sides intersect, is the main focus of packaging design.) Transporting large computers etc. If you do
The side ridge is to be protected. (In the rectangular parallelepiped, four parts of the line where the two sides intersect are the focus of the packaging design.) A conventional cardboard corner pad will be described in detail with reference to the drawings.

FIGS. 8 (a) and 8 (b) are a cross-sectional view and a side view showing an example of the related art. The product 40 is fixed with bolts and nuts on the pallet 30 in which the fork of the forklift enters, and corner pads including buffer prisms 121 and 122 are provided at four corners of the pallet 30. Buffer prisms 121, 12
The material 2 is a square material such as Styrofoam or Styrofoam, and the two are bonded in an L-shape to obtain a required corner pad. Such a corner pad made of foamed plastic has a sufficient cushioning property, so that the product 40
It is widely used because it can be processed appropriately according to the size of

[0004] Next, the body frame 50 made of a reinforced cardboard box or the like is covered from above and fixed to the pallet 30 with a cap nail or the like. Finally, an upper lid 52 is put on the body frame 50.

[0005] Since the portion of the product 40 which is likely to be damaged by an impact during transportation is a side edge portion which receives a force in the lateral direction of arrows B and C, the impact is reduced by the corner pad.

[0006]

The conventional corner pad described above has a drawback that it has a problem of pollution and is difficult to recycle.

[0007]

According to the first aspect of the present invention, a cardboard corner pad is formed by bending a single cardboard in a specific direction to form a multi-layered prism, and can be fitted to the side surface of the prism. A plurality of recesses are provided.

According to a second aspect of the present invention, there is provided a cardboard corner pad.
In the first invention, the two prismatic bodies are fitted so that the convex portions are orthogonal to the concave portions.

According to a third aspect of the present invention, there is provided a cardboard corner pad.
A first multi-layer corrugated cardboard having a required thickness formed by winding a corrugated cardboard and a first unevenness provided on one side thereof; and a second multi-layered cardboard having a required thickness formed by winding a corrugated cardboard and fitting the first unevenness on one side thereof. And a second multi-layer corrugated cardboard provided with irregularities.

[0010]

Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing a first embodiment of the present invention. The cardboard corner pad 10 shown in FIG.
A multi-layer corrugated cardboard 20a in which a corrugated cardboard is wound to a required thickness and a first irregularity is provided on one side thereof, and a second corrugated cardboard which is wound to a required thickness by a corrugated cardboard and is fitted to the first irregularity on one side thereof. And the provided multilayer cardboard 20b.

FIG. 2 is a perspective view showing details of the multilayer cardboard shown in FIG. The pitch between the convex portion 23 and the concave portion 22 is the same, and the depth d of the concave portion 22 (the height of the convex portion 23) is the same as the thickness t of the multilayer cardboard.

FIG. 3 is a top view showing details of the multilayer cardboard shown in FIG. The corrugated cardboard has a three-layer Date winding shape,
The end surface 24 is bonded with an adhesive.

FIG. 4 is a development view of the multilayer cardboard 20a shown in FIG. The corrugated portion 21 is a corrugated cardboard as the material of the corrugated cardboard, and the punched portion 22a is a hole for forming a concave portion 22 for fitting the multilayer corrugated cardboard 20b. The multi-layer corrugated cardboard 20a has a, b, c
And these portions are further composed of four strip-like portions (a1 to a4, b1 to b4, c1 to c4). The portions a, b, and c correspond to the first layer, the second layer, and the third layer, respectively, from the inside of the columnar body having a multilayer structure. Corresponds to the quadrilateral shape of the body. The dotted lines at the boundaries between the respective sides are perforations provided so as to be easily bent in advance.

When the portion "a" is turned inward and bent in the directions toward "b" and "c", a multilayer cardboard 20a having three layers is obtained. The c4 surface, which is the final part of the bending, is adhered to the back surface of b4 to obtain a multilayer cardboard 20a.

FIGS. 5 and 6 are perspective views showing an example of use of the present invention. It is preferable to provide a flat cushioning member between the wooden pallet 30 and the product 40 so that the product 40 can withstand vertical vibration and impact. Corrugated cardboard corner pads 10 are applied to the four side edges of the product 40. After the state shown in FIG. 5, the corrugated cardboard corner pad 10 is fixed by covering the body frame 50 made of reinforced corrugated cardboard such as triple wall. The lower end of the body frame 50 is
2 fixes it to the pallet 30. The top surface is covered with an upper lid 52 made of reinforced corrugated cardboard such as triple wall from above the body frame 50, and is integrally fixed together with the pallet 30 and the body frame 50 by the band 53, and the packing is completed.

FIG. 7 is a top view showing a second embodiment of the present invention. Instead of winding the corrugated cardboard, the multi-layer corrugated cardboard 60 is folded three times in a zigzag manner starting from the end 61 of the corrugated cardboard, and finally wound one round. Also,
Each contact surface of the cardboard is bonded with glue.

[0018]

The cardboard corner pad of the present invention uses multilayer cardboard instead of foamed plastic, so that it is possible to avoid pollution problems and to facilitate recycling.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing details of the multilayer cardboard shown in FIG. 1;

FIG. 3 is a top view showing details of the multilayer cardboard shown in FIG. 1;

FIG. 4 is a development view of the multilayer cardboard 20a shown in FIG.

FIG. 5 is a perspective view showing an example of use of the present invention.

FIG. 6 is a perspective view showing an example of use of the present invention.

FIG. 7 is a top view showing a second embodiment of the present invention.

8A and 8B are a cross-sectional view and a side view showing an example of the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Corner pad 20 Multilayer cardboard 22 Concave part 23 Convex part 24 Termination part

Claims (3)

[Claims] 1. A corrugated cardboard corner pad wherein a single corrugated cardboard is bent in a specific direction to form a prismatic body having a multilayer structure, and a plurality of recesses which can be fitted on side surfaces of the prismatic body are provided. . 2. A corrugated cardboard corner pad according to claim 1, wherein two of said prismatic bodies are fitted so that a convex portion is orthogonal to a concave portion. 3. A first multi-layer corrugated cardboard in which a corrugated cardboard is wound to a required thickness and a first irregularity is provided on one side thereof, and a corrugated cardboard is wound to a required thickness and fitted to the first irregularity on one side thereof. A second multi-layer corrugated cardboard provided with second irregularities to be combined.