JP2007084128A - Top cover closing structure for corrugated cardboard box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems occurring that stapling work imposes a large burden on elderly people; staples can scratch a stored material and the staples have to be removed from the top cover for fractionation, after opening the top cover in a conventional method of closing a top cover of a corrugated cardboard box by staples. <P>SOLUTION: The corrugated cardboard box is constituted by forming a peripheral surface of long-side surfaces and short-side surfaces arranged at opposed locations, and by forming the top cover by extending flaps from one sides of the long-side and short-side surfaces, respectively. The top cover forming flaps each having a rectangular shape are arranged such that one sides of the flap is superposed on the other sides of another flap adjacent thereto, to thereby close the top cover. Herein at least one of the top cover forming flaps is formed into a trapezoid by slantingly cutting away one side by 40° to 50° from the base end of the flap, and the top cover forming flap adjacent to the trapezoidal flap has a folding crease formed on the other side, that is inclined by 50° to 40° from the base end. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to an improvement in a structure for closing an upper lid by an upper lid forming flap in a cardboard box.

Conventionally, cardboard boxes have been widely used as packaging boxes. As the corrugated cardboard box, a so-called A-type cardboard box in which flaps are extended on a length surface and a width surface forming a peripheral surface is generally used, and an upper lid and a bottom plate are formed by upper and lower flaps. As a method for sealing an upper lid or a bottom plate with a flap, stapling or sticking of an adhesive tape is generally performed. Further, as shown in Patent Document 1, there is a structure in which a fitting piece provided on a flap constituting an upper lid and a fitting notch are engaged and sealed.
JP 2004-175427 A

  In the sealing method using staples and adhesive tape described above, it is necessary to prepare these staplers (boxers) and the like. It is necessary and a lot of work is required for the sealing work. In particular, in the case of stapling, it is a burdensome work for the elderly, and there is a problem that the stored items are damaged or must be removed for separation after use.

In addition, in the structure where the fitting pieces etc. provided on the flaps are inserted and sealed, it is still not solved that the fitting pieces are difficult to insert when packed in a cardboard box, and workability is significantly reduced. To do. In addition, the fitting piece provided on the flap is easily broken or deformed, and the sealing function may be completely lost or may be significantly hindered, which makes it difficult to reuse.

  Therefore, the present inventors have been able to achieve the present invention as a result of intensive studies in view of the above problems, and the features thereof are that the circumferential surface is formed by the length surface and the width surface arranged at the opposing positions, respectively. In a corrugated cardboard box in which a flap is extended on one side to form an upper lid, the rectangular upper lid forming flap has a structure in which each upper side is closed on the other side, and the upper lid is formed. At least one of the flaps has a trapezoidal shape with one side cut by 40 ° to 50 ° from the base, and a crease of 50 ° to 40 ° from the base is provided on the other side of the upper lid forming flap adjacent to the flap. is there.

  Here, the “upper lid forming flap” in the present specification is a box formed of corrugated cardboard, and is extended to one side of each of the length surface and the width surface constituting the peripheral surface arranged at the opposing position. A single flap. For example, it is a cardboard box such as an A type in which flaps are extended on both sides of a length surface and a width surface, or a C type cardboard box in which one flap is omitted from the A type. The closing structure in the present invention is based on closing by sequentially superposing one side of each of the upper lid forming flaps on the other adjacent side.

  In the present invention, in order to make it easy to superimpose one side of the upper lid forming flap on the other adjacent side, at least one of the upper lid forming flaps has a trapezoidal shape cut by 40 ° to 50 ° from the base portion on one side. And it is set as the structure which provided the crease | fold of 50 degrees-40 degrees from the base on the other side of one upper cover formation flap adjacent to this. To close the upper lid formed in this way, first, the three adjacent flaps not provided with creases are sequentially overlapped and closed on the other side. Next, each of the four flaps is folded by slightly folding the triangular folded piece of the flap provided with the crease in the direction of closing the crease, and fitting this under one side of the adjacent flap. The sealing work is completed with one side overlaid on the other.

  It is preferable that the crease of the flap provided with the crease and the trapezoidal flap adjacent to the crease be positioned on the line of the portion where the crease is cut into a trapezoid or the inside thereof when closed. It can be difficult to open carelessly.

In the present invention, the means for closing the bottom plate of the cardboard box is not particularly limited, and may be closed with staples or adhesive tape. In other words, the object of the present invention is to close the upper lid after storing harvested items in a cardboard box formed in a container shape in order to efficiently perform the main harvesting work and its carrying-out work. This is to improve the workability of packaging.

  In the upper lid closing structure in the cardboard box according to the present invention, at least one of the upper lid forming flaps has a trapezoidal shape in which one side is cut out by 40 ° to 50 ° from the base, and the base is formed on the other side of one of the upper lid forming flaps adjacent thereto. Since the folds of 50 ° to 40 ° are provided, the work to close the top cover after storing the stored items can be performed without using a stapler or other instrument, so that not only the packing operation but also the harvesting operation And the efficiency of carry-out work can be improved.

In particular, according to the present invention, since the upper lid forming flap is provided with a crease or a notch, it is closed by engaging each other, so that even an elderly person can easily pack it. In addition, since there is no easily damaged portion such as an insertion piece, it can withstand repeated unpacking and has a very useful effect in practice, such as increasing the frequency of reuse.

A trapezoid in which one side of each of the rectangular upper lid forming flaps is overlapped with the other adjacent side to close the upper lid, and at least one of the upper lid forming flaps is cut out by 40 ° to 50 ° from the base on one side And a crease of 50 ° to 40 ° from the base is provided on the other side of one of the upper lid forming flaps adjacent thereto.

  Fig.1 (a) is the cardboard box 1 which shows one Example of the upper cover closing structure in the cardboard box based on this invention. In the cardboard box 1, one of the upper lid forming flaps 11 constituting the upper lid is formed as a trapezoidal flap 12 cut out by 45 ° from the base portion on one side. Then, on the side of the flap adjacent to the trapezoidal flap 12 cut into a trapezoid, a crease 13 of 45 ° from the base is provided to form a triangular bent piece 14.

The upper lid forming flap 11 closes three flaps other than the flap provided with the crease 13 by alternately overlapping one side on the other side as shown in the figure. In this case, the trapezoidal flaps 12 are assembled so that the other side of the trapezoidal flap 12 is cut down. Then, the closing is completed by inserting the bent piece 14 bent by the crease 13 into the trapezoidal part while lifting it up slightly. In the state where the upper lid is closed, the crease 13 and the end portion cut out in a trapezoidal shape are substantially at the same position as shown in FIG. In the closed state, the closed state can be more reliably maintained by setting the angle so that the crease 13 is hidden under the trapezoidal flap 12 as shown by a chain line in the figure.

  FIG. 2A is a cardboard box 1 showing another embodiment of the upper lid closing structure in the cardboard box according to the present invention. The cardboard box 1 has a trapezoidal flap 12 cut out by 45 ° from a base portion on one side while shortening the length of each upper lid forming flap 11 constituting the upper lid. Then, one of the trapezoidal flaps 12 is provided with a crease 13 of 45 ° from the base on the side opposite to the side cut into the trapezoid, thereby forming a triangular bent piece 14.

The cardboard box 1 of this example is an A-type cardboard box having a width of 360 mm, a length of 600 mm, and a height of 190 mm. The bottom forming flap has a length of 180 mm and the upper lid forming flap 2 has a length of 110 mm. This blank sheet is shown in FIG. Since each of the upper lid forming flaps 2 is a trapezoidal flap 21 having a short length, the operation of overlapping and closing one side of each flap on the other side becomes extremely simple. Furthermore, since the crease 22 is provided on the flap extending on the width surface (shorter peripheral surface), the longer flap extending on the long surface (longer peripheral surface) is easy to lift, and the folded piece 23 becomes easy to insert.

BRIEF DESCRIPTION OF THE DRAWINGS One Example of the upper cover closing structure in the cardboard box concerning this invention is shown, (a) is a perspective view, (b) is a top view of the closed state. Example 1 The other examples of the upper cover closing structure in the cardboard box concerning the present invention are shown, (a) is a perspective view and (b) is a blank sheet of (a). (Example 2)

Explanation of symbols

1 cardboard box
11 Upper lid forming flap
12 Trapezoidal flap
13 Folded line
14 Folded pieces

Claims (1)

  In a corrugated cardboard box in which a peripheral surface is formed by a length surface and a width surface arranged at opposing positions, and a flap is extended to one side to form an upper lid, the rectangular upper lid forming flap is adjacent to each one side The upper lid is closed on top of the other side, and at least one of the upper lid forming flaps has a trapezoidal shape with one side cut out from the base by 40 ° to 50 °, and one of the upper lid forming flaps adjacent thereto An upper lid closing structure in a cardboard box, wherein a crease of 50 ° to 40 ° is provided on the other side from the base.

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