JP3067517U - Corrugated ball and corrugated ball box - Google Patents

Abstract

(57) [Problem] To provide a corrugated cardboard which can be easily bent in a direction parallel and perpendicular to a side, has a bent portion in a straight line, has excellent strength of the bent portion, and can improve durability. It is in. A corrugated sheet (5) in which corrugated rows are formed by alternately forming ridges (3) and valleys (4) in a vertical direction on a sheet material (2) made of paper is bonded to a flat sheet (6) made of paper. The corrugated cardboard 1 is characterized in that the corrugated rows of the corrugated sheet 5 are arranged obliquely with respect to the sides 6a and 6b of the flat sheet 6.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a cardboard box and a cardboard box suitable for producing, for example, a packaging box for storing automobile parts, precision machine parts, electronic equipment, glass products, and the like.

[0002]

[Prior art]

 When packing and transporting products, especially fragile items such as automobile parts, precision machine parts, electronic equipment, and glass products, protect the items to be packaged from being damaged by vibrations, shocks, etc. applied during transportation. One or more packages are stored in a packaging box, and a large number of cushion pieces are packed in gaps between the packaging boxes as cushioning material. Packaging boxes are generally made of paper sheets such as kraft liners or jute liners on one or both sides of corrugated sheets formed by corrugated rows formed by alternately applying peaks and valleys vertically to a paper sheet material. A corrugated cardboard to which a flat sheet is adhered, particularly a rectangular corrugated ball, is used, and the rectangular corrugated cardboard is bent to form a cubic or rectangular parallelepiped packaging box.

[0003] The corrugated cardboard is arranged such that the corrugated rows of the corrugated sheet serving as the core are parallel or perpendicular to the sides of the flat sheet. When the packaging box is manufactured, it is bent or cut in a direction parallel or orthogonal to the corrugated row of the corrugated sheet to form a cube or a rectangular parallelepiped.

[0004]

[Problems to be solved by the invention]

 However, when the corrugated cardboard is folded parallel to the corrugated rows of the corrugated sheet (usually bent along the valleys of the corrugated sheet), it is easily broken along the valleys of the corrugated sheet, and furthermore, the packaging box containing the packaged goods. Stacking or repeating loading and unloading during transportation caused the problem that the packaging box was easily deformed or damaged. Further, when the corrugated cardboard is bent in a direction perpendicular to the corrugated rows of the corrugated sheet, there is a problem that the bending line is not accurately bent in a straight line, and the bent portion opens at an obtuse angle.

The present invention has been made in view of the above circumstances, and the purpose is to make it easy to bend in the directions parallel and perpendicular to the sides, and to make the bent portion straight, An object of the present invention is to provide a corrugated cardboard and a corrugated cardboard box having excellent strength and improved durability.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is directed to claim 1. One or both sides of a corrugated sheet in which corrugated rows are formed by alternately forming peaks and valleys in a vertical direction on a paper sheet material. In a rectangular cardboard to which a flat sheet made of paper is adhered, corrugated rows of the corrugated sheets are arranged so as to be oblique to the sides of the flat sheet. Therefore, when the sheet is bent in a direction parallel and perpendicular to the side, the bending line is inclined with respect to the corrugated line of the corrugated sheet, and the ridges can escape without rebounding at the bent portion. It is easy to bend evenly in the direction of.

[0007] A second aspect of the present invention is a rectangular sheet in which a paper flat sheet is bonded to one or both sides of a corrugated sheet formed by alternately forming peaks and valleys in a vertical direction on a paper sheet. A corrugated cardboard box formed by bending the corrugated cardboard into a cube or a rectangular parallelepiped, characterized in that the ridge line of the bent portion of the corrugated cardboard is oblique to the corrugated row of the corrugated sheet. Therefore, the peaks and valleys of the corrugated sheet are alternately arranged on the ridgeline of the bent portion of the cardboard box, and the peaks and valleys are not continuous, so that tearing from the bent portion can be prevented, and the whole is sturdy. A simple cardboard box can be configured.

[0008]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1A and 1B show a first embodiment, in which FIG. 1A is a perspective view in which a part of the cardboard 1 is peeled off, and FIG. 1B is a sectional view of the cardboard 1. The cardboard 1 is a material of a cardboard box used for packing and transporting vulnerable items such as automobile parts, precision machine parts, electronic devices, and glass products.

The corrugated cardboard 1 has a corrugated sheet 5 formed by alternately forming ridges 3 and valleys 4 in a vertical direction on a sheet material 2 such as kraft paper, and is adhered to both sides of the corrugated sheet 5. It is formed in a rectangular shape from a flat sheet 6 made of paper. The corrugated sheet 5 is arranged so that the corrugated row is inclined with respect to the horizontal side 6 a and the vertical side 6 b of the flat sheet 6, for example, at an angle of 45 °. Accordingly, when the sheet is bent in a direction parallel and orthogonal to the horizontal side 6a and the vertical side 6b, the bending line is configured to be oblique to the corrugated row of the corrugated sheet 5.

Next, a case where the cardboard box 7 is manufactured using the cardboard 1 configured as described above will be described. 2 is an exploded view of the cardboard box 7, and FIG. 3 is a perspective view of the cardboard box 7 in an assembled state.

As shown in FIG. 2, the box main body 8 made of the cardboard 1 is cut into a rectangular shape in parallel with the horizontal side 6 a and the vertical side 6 b of the flat sheet 6. The box main body 8 has three fold lines 9a to 9c formed at equal intervals in the longitudinal direction, and is provided with rectangular side plates 10a to 10d. Further, a glue margin piece 11 is provided on the side plate 10d via a fold line 9d.

A bottom piece flap 13 is connected to one end in the longitudinal direction of the side plates 10 a and 10 c via a fold line 12. Further, a lid piece flap 15 is continuously provided on the other end side of the side plates 10a and 10c in the longitudinal direction via a fold line 14. A lid plate 17 is connected to the lid piece flap 15 side of the side plate 10d through a fold line 16, and an insertion flap 19 is connected to the lid plate 17 through a fold line 18. Therefore, since the fold lines 9a to 9d, 12, 14, 16, and 18 of the cardboard 1 are parallel or orthogonal to the horizontal side 6a and the vertical side 6b of the flat sheet 6, the fold lines are wavy. The sheet 5 has an oblique direction, for example, an inclination of 45 ° with respect to the corrugated rows.

Next, a procedure for assembling the cardboard box 7 will be described. First, the side plates 10a to 10d and the adhesive margin piece 11 are valley-folded at right angles along the fold lines 9a to 9d, and the adhesive margin piece 11 is adhered to the inside of the side plate 10a with an adhesive. Be composed. Next, when the fold line 12 is valley-folded at right angles, the bottom piece flap 13 forms the bottom of the box main body 8.

Next, when the fold lines 14 and 16 are valley-folded at a right angle, the lid of the box main body 8 is formed. Finally, the fold line 18 is valley-folded and inserted into the open end of the side plate 10b. The cardboard box 7 is completed.

Since the bent portions 20 of the cardboard box 7 configured as described above are oblique to the corrugated row of the corrugated sheet 5, the peak portions 3 in the bent portions 20 repel each other. It is easy to bend evenly in any direction without escape. Further, the peaks 3 and the valleys 4 of the corrugated sheet 5 are alternately arranged on the ridge line of the bent portion 20, and the peaks 3 and the valleys 4 are not continuous, so that tearing from the bent portion 20 can be prevented. Thus, a sturdy cardboard box 7 can be constructed as a whole.

In the above-described embodiment, the corrugated board 1 in which the flat sheet 6 is bonded to both sides of the corrugated sheet 5 has been described. However, the present invention is also applicable to the corrugated board 1 in which the flat sheet 6 is bonded to one side of the corrugated sheet 5. . Further, the corrugated cardboard 1 is not limited to the material of the cardboard box 7, but may be applied as a material of a packaging envelope.

[0017]

[Effects of the Invention] As described above, according to the invention of claim 1, in corrugated cardboard, corrugated rows of corrugated sheets are arranged so as to be oblique to the sides of a rectangular flat sheet. Therefore, when bent in the direction parallel and perpendicular to the side, the bending line is inclined with respect to the corrugated row of the corrugated sheet, and the crests can escape without rebounding at the bent part, It is easy to bend evenly in the direction of.

According to the invention of claim 2, in the corrugated cardboard box, the ridge line of the bent portion of the corrugated cardboard is configured to be oblique to the corrugated row of the corrugated sheet. The valleys and peaks of the corrugated sheet are alternately arranged on the ridgeline of the corrugated sheet.Since the valleys and peaks do not continue, it is possible to prevent tearing from the bent part, making it possible to construct a sturdy cardboard box as a whole it can.

[Brief description of the drawings]

1A and 1B show a first embodiment of the present invention, wherein FIG. 1A is a perspective view in which a part of a cardboard is peeled off, and FIG. 1B is a cross-sectional view of the cardboard.

FIG. 2 is an exploded view of the same embodiment, with a part of a cardboard box cut away.

FIG. 3 is a perspective view showing the same embodiment, with a part of a cardboard box cut away.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Corrugated cardboard 3 ... Crest part 4 ... Valley part 5 ... Corrugated sheet 6 ... Flat sheet 7 ... Corrugated cardboard box 20 ... Bending part

Claims (2)

[Utility model registration claims] A corrugated sheet in which corrugated rows are formed by alternately forming peaks and valleys in a vertical direction on a paper sheet material, and a flat paper sheet is adhered to one or both sides of a corrugated sheet. A corrugated cardboard, wherein corrugated rows of the corrugated sheet are arranged obliquely to sides of the flat sheet. 2. A corrugated sheet in which corrugated rows are formed by alternately forming ridges and valleys in the vertical direction on a paper sheet material, and a square corrugated cardboard having a paper flat sheet adhered to one or both sides of the corrugated sheet is bent. A corrugated cardboard box having a cubic or rectangular parallelepiped shape, wherein a ridgeline of a bent portion of the corrugated cardboard is oblique to a corrugated row of corrugated sheets.