JP2006082843A - Corrugated fiberboard box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a corrugated fiberboard box which is easily unsealed without using a cutter or the like, and capable of preventing ingress of foreign matters such as bugs. <P>SOLUTION: In the corrugated fiberboard box to be closed with a pressure-sensitive adhesive tape by overlapping lid plates connected to upper edges of a pair of side plates on lid flaps connected to upper edges of a pair of end face plates, a U-shaped cutout is formed in a center part of an upper end of at least one of end face plates across a connection part to the lid flaps, the lid flap side from the inner connection part forms a release plate, and the end face plate side forms a second push plate. The lid plates and the lid flaps are folded inwardly and overlap each other, a cutout is formed in an end of the lid plate overlapping the release plate, the inner side forms a first push plate, the first push plate is pushed, and then, the second push plate is pushed. A space is formed thereby between the second push plate and the pressure-sensitive adhesive tape, and an end of the pressure-sensitive adhesive tape is easily held to facilitate the unsealing. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a structure for opening a lid of a cardboard box.

Conventionally, as shown in FIG. 6, a cardboard box 30 (0201 type) used for transportation or the like is provided by connecting flaps 33 to upper and lower edges of a pair of side plates 31 and a pair of end plates 32, respectively. 33 are overlapped, and the adhesive tape 40 is stuck in the center and closed. As a method of opening the cardboard box 30 as described above, the center of the adhesive tape 40 is cut and opened with a cutter or the like.

In addition, as a method of opening without using a cutter, etc., a cut is provided in the end surface of the cardboard box or the center of the lid surface, and the cut is broken when opening, making it easier to hold the end of the adhesive tape, making it easier to peel off. Yes. (For example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 9-240660

However, in the method of cutting and opening the adhesive tape with a cutter or the like as described above, there is a risk of damaging the contents.

In addition, in the method of making a cut on the end face of the cardboard box or the center of the lid and making it easier to peel off the adhesive tape, objects or fingers hit the cut part during transportation and breaks, and insects etc. enter the box from the hole. Foreign matter may enter.

And in order to solve said problem, if it makes a notch perforation etc., it will become difficult to tear, but it will be hard to tear at the time of opening, and it will become difficult to open.

In addition, when a cut is provided on the end face, when applying the adhesive tape, it is necessary to apply the end of the adhesive tape to the cut portion first, so the position where the adhesive tape is applied must be taken care of. So it is a hassle.

Accordingly, an object of the present invention is to provide a cardboard box that can prevent foreign matter such as insects from entering the cardboard box and can be opened quickly without using a cutter.

In order to solve the above-described problems, the present invention provides an adhesive tape in which a lid plate provided to be connected to the upper edges of a pair of side surface plates and a lid flap provided to be connected to the upper edges of a pair of end surface plates are overlapped. In the corrugated cardboard box that is closed at the top, at the center of the upper end of at least one of the end face plates, a U-shaped cut is provided to separate the connecting portion with the lid flap, and the lid flap side is released from the inner connecting portion. And the end plate side is a second pressing plate, and a crease is provided at the base end of the second pressing plate, the lid plate and the lid flap are folded inward and overlap each other, and the release plate and Even if the second pressing plate is pressed with an object or a finger in a state where a cut is provided at the end of the overlapping cover plate, the inside thereof is the first pressing plate, and the bottom of the lid is closed with an adhesive tape, Since the release plate is in contact with the lid flap, it opens without bending along the fold. There. At the time of opening, when the release plate is bent inward along the connecting portion with the second pressing plate by first pressing the first pressing plate, it is separated from the lid flap, and then the second pressing plate is pressed, By forming a gap between the second pressing plate and the pressure-sensitive adhesive tape, the end of the pressure-sensitive adhesive tape can be easily held and can be easily opened.

With such a cardboard box, it is necessary to press the second pressing plate after pressing the first pressing plate, so even if an object or a finger hits one of the pressing plates during transportation, there is no hole , Insects and other foreign matter will not enter.

In addition, it is necessary to press the two pressing plates at the time of opening as described above, so that even if a child or the like inadvertently presses the pressing plate on the end face before opening, it will not open, preventing tampering Become.

And since the 2nd press board is formed in the upper end center part of an end surface board, when sticking an adhesive tape, even if it is not careful about an affixing position, an adhesive tape can be stuck by the conventional method.

Further, the notch forming the push plate does not need to be perforated or half-cut as in the prior art, and it is not necessary to act to break the notch, so it can be easily opened without applying force.

1 and 2 are development views of a corrugated cardboard box 20 according to the present invention, in which a pair of side plates 1 and a pair of end plates 2 are alternately connected, and an adhesive margin piece 7 is connected to the open side of the side plate 1. Cover plates 3 and 4 are connected to the upper edge of the side plate 1, bottom plates 15 and 16 are connected to the lower edge, and a cover flap 5 is connected to the upper edge of the end plate 2. 6 are connected to each other, bottom flaps 17 and 18 are respectively connected to the lower edge, and a U-shaped notch 11 is provided at the center of the upper end of the end face plate 2 with a connecting portion connected to the lid flap 5. The lid flap 5 side is the release plate 12 and the end face plate 2 side is the second pressing plate 13 from the inside connecting portion, and a fold 14 is provided at the base end of the second pressing plate 13. The lid plate 4 and the lid flap 5 are folded inward, overlapped with each other, and at the end of the lid plate 4 overlapping the release plate 12 The shaped notch 8 is provided, and the inner and the first push plate 9, creases 10 are provided at the proximal end.

As shown in FIG. 3, the corrugated cardboard box 20 is formed by sticking the adhesive margin piece 7 to the opposite end face plate 2 into a cylindrical shape, and bending the lid flaps 5 and 6 and the bottom flaps 17 and 18 inward from the connecting portions. Next, the cover plates 3, 4 and the bottom plates 15, 16 are folded and overlapped inward from the connecting portion, and the adhesive tape 30 is attached and closed to the abutted portions of the facing cover plates 3, 4 and the bottom plates 15, 16. An end portion of the adhesive tape 30 is bent toward the end face plate 2 and is attached to the end portion of the end face plate 2.

At this time, since the second pressing plate 13 is formed at the center of the upper end of the end face plate 2, the end of the adhesive tape 30 is attached to a part of the second pressing plate 13.

The corrugated cardboard box 20 closed as described above has a folding line because the release plate 12 is in contact with the lid flap 5 even if an object or a finger presses the second pressing plate 13 during transportation or the like. 14 cannot be bent inward and the second pressing plate 13 cannot be opened.

When opening the cardboard box 20, as shown in FIG. 4, the release plate 12 is bent inward from the connecting portion with the second pressing plate 13 by first pressing the first pressing plate 9 inward, and the lid When the second pressing plate 13 is pushed away from the flap 5 and then the second pressing plate 13 is pushed, it can be bent inward from the fold line 14 and the second pressing plate can be opened.

Then, as shown in FIG. 5, by pressing the second pressing plate 13, a gap is formed between the second pressing plate 13 and the end portion of the adhesive tape 30 adhered to the end face plate 2, from the clearance. Putting a finger and picking the end of the adhesive tape 30 makes it easy to peel it off and can be opened without using a cutter.

The cardboard box 20 of the present invention is not limited to the configuration of the above embodiment. For example, in the above-described embodiment, the opening structure of the present invention is provided on the lid surface and the adhesive tape 30 is easily peeled off. However, by providing the opening structure of the present invention on the bottom surface, the adhesive tape 30 is easily peeled off during disassembly. Easy to dispose of.

In addition, a U-shaped notch 8 is provided at the end of the lid plate 4 to form the first pressing plate 9. However, the notch 8 is circular and the opening inside thereof is also used as the first pressing plate 9. Good.

It is an expanded view of the cardboard box of the present invention. It is an expansion development view of the 1st push board and the 2nd push board. It is a perspective block diagram of the state which closed the cardboard box of this invention. It is a side view which shows the step at the time of opening. It is a perspective block diagram which shows the clearance gap between a 2nd press plate and an adhesive tape. It is a perspective block diagram of the conventional cardboard box (0201 type).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side plate 2 End plate 3, 4 Lid plate 5, 6 Lid flap 7 Glue margin pieces 8, 11 Notch 9 1st press plate 10, 14 Fold 12 Release plate 13 2nd press plate 15, 16 Bottom plate 17, 18 Bottom flap 20 Cardboard box 30 Adhesive tape

Claims (1)

A cardboard box in which a lid plate provided to be connected to the upper edges of a pair of side plates and a lid flap provided to be connected to the upper edges of a pair of end surface plates are overlapped and closed with an adhesive tape, and at least the end plate A U-shaped notch is provided at the center of one upper end to separate the continuous portion with the lid flap, the lid flap side is the release plate from the internal continuous portion, and the end face plate side is the second pressing plate, Folding the lid plate and lid flap inward, overlapping each other, providing a notch at the end of the lid plate that overlaps the release plate, using the inside as a first pressing plate and holding the first pressing plate When the release plate is separated from the lid flap and then the second pressing plate is pressed, a gap is formed between the second pressing plate and the adhesive tape, so that the end of the adhesive tape can be easily held and the opening is facilitated. Corrugated cardboard box.

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