JPH06293328A - Cardboard box - Google Patents

Abstract

PURPOSE:To provide a cardboard box which can house and carry a heavy object with a simple structure. CONSTITUTION:Longitudinal sides 4 extend on both sides of a bottom 3, and inner widthwise faces 21, intermediate widthwise faces 22 and outer widthwise faces 23 extend from respective opposite sides, while an outer flap 6 is provided on the two outer widthwise faces 23 and an inner flap 7 is provided on the two longitudinal sides 4, so that the intermediate widthwise face 22 is fixed with adhesive while being interposed between the inner widthwise face 21 and the outer widthwise face 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an outer corrugated cardboard box.

[0002]

2. Description of the Related Art There are various conventional corrugated cardboard boxes. For example, two length faces and two width faces are alternately arranged, and inner flaps and outer flaps extend above and below them. The so-called A type corrugated cardboard box is generally used. In addition, the top surface, the length side surface and the bottom surface are connected in series,
There is a B type or the like formed by fixing the width surface or the like.

[0003]

However, in the conventional corrugated cardboard box having a general structure, it is almost impossible to store a heavy object, and there is a drawback that the bottom is pulled out and broken. Therefore, conventionally, the strength of the corrugated cardboard itself has been increased by using a double-sided corrugated board or a double-sided corrugated board, or thickening the corrugated board base paper (liner). However, even if the strength of the corrugated board itself is increased, the joint portion of the outer flap and the joint portion of the joint are broken, and the overall strength has not been increased.

Further, when a heavy object is stored in a cardboard box, it is sure to hold the bottom of the cardboard box when lifting it in order to prevent the bottom from coming off, but in reality, a cardboard box is actually used. It is necessary to repeat the operation of lifting the boxes one by one and putting their hands under the boxes, and if a large number of cardboard boxes are to be moved, the work efficiency will be extremely reduced. For this reason, even if the cardboard box is provided with a handle hole on the side surface or the width side, in a cardboard box containing a heavy object, the cardboard box is broken from the handle hole, and as described above, the cardboard box is actually used. The reality was that you had to lift it by holding the bottom of the box.

[0005]

Therefore, the present inventor has accomplished the present invention as a result of earnest research in view of the above problems, and is characterized in that the bottom surface and the side portions of the bottom surface facing each other are opposed to each other. Of the two side faces of the length face extended to the inner side face, one side face of the side face of the length face has an inner width face, the side face of the bottom face having a handle hole, and the other side face. Outer width surfaces each provided with a handle hole on the opposite sides of the length surface side surfaces are extended, and outer flaps are respectively extended on the two outer width surfaces and inner flaps are extended on the two side surfaces of the length surface. Was done,
The middle width surface is sandwiched between the inner width surface and the outer width surface and fixed by an adhesive.

As used herein, the term "length side surfaces" refers to two surfaces extending on opposite sides of the bottom surface,
A surface surrounded by the length and depth of a box. That is, the length face side face, the bottom face, and the length face side face are continuously provided in this order, and two inner width faces are provided on opposite sides of the length face side face, and two middle width faces are provided on opposite sides of the bottom face. , Two outer width surfaces are respectively provided on opposite sides of the other side surface of the length surface.

The "width surface" is a surface surrounded by the width and depth of the box. In the corrugated board box according to the present invention, as described above, the width faces are respectively extended on the opposite sides of the two length face side faces and the bottom face, and have a triple structure of the inner width face, the middle width face and the outer width face. The width surfaces are fixed to each other with an adhesive. As the adhesive, hot melt is generally used, but the adhesive is not particularly limited, such as hot melt plus vinyl acetate. Further, by providing the handle holes on the middle width surface and the outer width surface, the two width surfaces can be raised by hand without exposing the stored items on the inner width surface.

The "flap" forms the top surface, and two outer width surfaces are provided with outer flaps and two length surface side surfaces are provided with inner flaps.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.

FIG. 1 shows an embodiment of a cardboard box 1 according to the present invention, in which the width surface 2 is an inner width surface 21, a middle width surface 22,
The outer width surface 23 has a triple structure. The medium width surface 22
Is extended to the opposite side portions of the bottom surface 3, and the inner width surface 21 and the outer width surface 23 are respectively connected to the two length face side surfaces 4 extended to the opposite side portions of the bottom surface 3. . Then, the middle width surface 22 and the outer width surface 23 are provided with the respective hand-holding holes 5, so that the middle width surface 22 and the outer width surface 23 can be touched.

The middle width surface 22 extending from the bottom surface 3 has an inner width surface 21 and an outer width surface 23 extending from the two length surface side surfaces 4.
It is fixed with an adhesive in a state of being sandwiched between. Therefore, the medium width surface 22 extended from the bottom surface 3 where the weight of the stored item is most applied is held and fixed by the inner width surface 21 and the outer width surface 23, and the middle width surface 22 and the outer width surface 23 are raised by hand. As a result, it is possible to prevent the bottom from slipping out when the heavy object is stored and the breakage from the handholding hole 5 portion.

A blank sheet in which the cardboard box 1 is developed is shown in FIG. It is made of double-sided corrugated board and has two length faces 4 on the opposite sides of the bottom face 3.
The two middle width surfaces 2 on the other opposite sides of the bottom surface.
2 are extended. Then, two inner width surfaces 21 are provided on one side of the two length surface side surfaces 4 facing each other, and an outer width surface 23 is provided on the other side of the other side surface 4 facing each other. Further, outer flaps 6 are respectively extended on the two outer width surfaces 23, and inner flaps 7 are extended on the two length surface side surfaces 4. Of the inner flaps 7 in this case, the inner flap 7 on the side independently provided on the lower side may be shortened as shown by the chain line due to the material taking relationship, and there is no particular problem.

[0013]

As described above, in the corrugated board box according to the present invention, the side faces of the length surface are extended to the opposite side portions of the bottom face, and the side faces of the bottom face and the side faces of the length face are opposed to each other. The inner width surface, the middle width surface, and the outer width surface are extended, and the outer flap is attached to the outer width surface.
Since the inner flap is extended to the side surface of the length surface, the middle width surface extending from the bottom surface is sandwiched between the inner width surface and the outer width surface and is fixed by an adhesive, There is no joint on the bottom surface, and the bottom surface does not break even when a heavy object is stored. Moreover, since the middle width surface extended from the bottom surface is fixed by the adhesive in a state of being sandwiched between the inner width surface and the outer width surface, a hand should be put on the handle holes provided on the middle width surface and the outer width surface. Even when lifted, it is possible to store and transfer a heavy object without slipping out from the bottom and breaking from the handle hole. In addition, a structure in which the inner width surface, the middle width surface, and the outer width surface are respectively extended to the bottom surface and the length surface side surfaces extending on both sides thereof and each width surface is fixed with an adhesive to form a cardboard box. Therefore, the automatic box making by the box making machine becomes extremely easy, and the production cost can be greatly reduced, which is a very useful effect in practical use.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a cardboard box according to the present invention.

FIG. 2 is a plan view of a blank sheet in which the cardboard box shown in FIG. 1 is expanded.

[Explanation of symbols]

 1 Cardboard Box 2 Width Side 21 Inner Width Side 22 Medium Width Side 23 Outer Width Side 3 Bottom 4 Length Side Side 5 Handle Hole 6 Outer Flap 7 Inner Flap

Claims (1)

[Claims] 1. A bottom surface and one of two length surface side surfaces extending to opposite side portions of the bottom surface, an inner width surface at an opposite side portion of one length surface side surface, and an opposite side of the bottom surface. A middle width surface provided with a hand-holding hole, and an outer width surface provided with a hand-holding hole on each of the opposite sides of the other side surfaces of the length surface, and two outer flaps each having an outer flap. Inner flaps are respectively extended on the side surfaces of the two length surfaces, and the middle width surface is secured to the inner width surface and the outer width surface by an adhesive agent. And a cardboard box.