JPH11152130A - Packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a packaging box which can be opened by a simple operation and a light force, and wherewith an excessive refuge is not generated. SOLUTION: On an unsealing surface 5 of this packaging box, a smooth curve-form perforation 1 of which both ends terminate at either one edge 6b of the unsealing surface 5, is formed. On the unsealing surface 5, two lines of linear perforations 2a, 2b which collide with the curve-form perforation 1 at an approx. right angle are desirable to be formed. The linear perforations 2a, 2b terminate on one edge being confronted with the edge at which both ends of the curve-form perforation 1 terminate. Both ends of the curve-form perforation 1 are desirable to be respectively located being away from both corners of the edge of the unsealing surface 5 by a specified distance W.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging box used for the exterior of medicines and the like.

[0002]

2. Description of the Related Art A cardboard box will be described as an example of a packaging box. The cardboard box is a packaging box made of cardboard, which is strong against external forces, and is widely used for packaging various products. There are various methods for assembling cardboard boxes. Particularly, when packaging relatively large medical containers, cardboard boxes that require a wide opening to remove the package from the box are referred to as so-called wrap round cases. No. 60-99214).

[0003] The structure of this cardboard box (especially the open structure)
Will be described with reference to FIG. FIG. 5 (a) is a perspective view showing a cardboard box in the process of assembling. The cardboard box is assembled by applying an adhesive to the folded portion 24 of the end face 23 and closing the front face 25. FIG. 5 (b) shows the assembled cardboard box. On the front face 25, there are elongated open perforations (hereinafter simply referred to as "perforations") 21a and 21b (hereinafter, generally referred to as 21) which bisect the front side horizontally.
There are two cuts 22a and 22b (collectively referred to as 22) for lifting one of the two halves 25b.

FIG. 5C shows a state in which the elongated perforation 21 has been broken. FIG. 5 (d) shows that a finger is inserted into the notch 22,
The state which pulled up the piece 25b is shown. The adhesive portion of the folded portion 24 on the end face 23 is peeled off at the same time when the piece 25b is pulled up. If the other piece 25a is lifted by holding an arbitrary part, it is peeled off together with the adhesive part.

[0005]

As described above, when the cardboard box is opened, two operations are required: an operation of breaking the elongated perforation 21 and an operation of putting a finger in the notch 22 and pulling up the piece 25b. Also, an elongated perforation 21
, A strip 26 (see FIG. 5 (c)) is generated as dust.

Further, when assembling the cardboard box, the folded portion 24 (see FIG. 5A) of the end face 23 is coated with an adhesive, so that a large force for peeling off the bonded portion is required to pull up the piece 25b. Becomes Then, an object of the present invention is to realize a packaging box which can open a box with one operation and with a light force and does not generate extra dust.

[0007]

The packing box of the present invention is provided with a smooth curved perforation having both ends terminated on one side of the opening face on the opening face of the packaging box. (Claim 1). When opening such a packaging box, the user can smoothly open the packaging box only by a simple operation of inserting a finger into the perforation and pulling up.

Furthermore, since the perforations 21 as shown in FIGS. 5 (b) and 5 (c) are not provided, no extra dust is generated after opening. Further, by forming the perforations into a smooth curve, the opening can be smoothly opened with a light force. Further, the packaging box of the present invention may be a wrap round case (claim 2).

Here, as a material of the wrap round case, there is cardboard. Examples of cardboard include paper consisting of corrugated central base paper and liners used on the front and / or back. Includes single-sided cardboard consisting of one center and one liner, and double-sided cardboard consisting of one center and two liners. It is desirable to form two linear perforations on the opening surface that collide with the curved perforations at substantially right angles. The straight perforation ends on one side opposite to the one on which both ends of the curved perforation end (Claim 3).

[0010] With this configuration, the user opens the opening by putting his / her finger into the curved perforation and pulling it up, and then pulling up the remaining piece to break the linear perforation, thereby increasing the opening surface. Can be opened. In particular, by providing the curved perforations and the linear perforations at substantially right angles, the breaks do not unexpectedly reach the linear perforations while breaking the curved perforations. Therefore, the force for breaking a curved perforation can be kept light and constant.

It is preferable that both ends of the curved perforation are located at a predetermined distance W from both corners of the one side of the opening surface. If both ends of the curved perforation are located at both corners of the one side, an excessive force is applied to the corner when opening the package, and the packaging box may be broken.

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an exploded view of the packaging box. A smooth curved perforation 1 on the front 5
And perforations 2a and 2b which collide with the perforation 1 at a substantially right angle, and a notch 3 is formed at a substantially central portion of the perforation 1. The ends of the curved perforations 1 are near both ends of one fold 6b of the front face 5, and the ends of the linear perforations 2a, 2b are near both ends of the other fold 6a (of course, Conversely, the end of the curved perforation 1 may be near both ends of the fold 6a, and the ends of the linear perforations 2a and 2b may be near both ends of the fold 6b.

A surface surrounded by the perforations 1 and the folds 6b is called a piece 5a, and a surface surrounded by the perforations 1, the perforations 2a and 2b and the folds 6a is called a piece 5b. The reason why the perforations 1 are smooth is that the pieces 5a can be opened smoothly without providing an elongated perforation 21 at the center as shown in FIG. 5 (c). Further, the position of the end of the perforation 1 is not a corner of the front face 5 but is separated from the corner by a fixed width W (see FIG. 1). This is because an excessive force may be applied to the corner and break the cardboard. The constant width W is set to, for example, about one-tenth of the length L of the long side of the front (if the length L of the long side = tens of cm, W
= 1cm).

The cardboard is folded along the folds 6a to 6d to form a square tube having four front faces 5, side faces 8, rear faces 9, and side faces 10, and the flaps 4a to 4d are folded to form one of the flaps 4a to 4d. When the section and the flap 7 are bonded, the packaging box is completed. FIG. 2 is a perspective view of the completed packaging box. In order to open the front face 5 of this packaging box, as shown in FIG. 3, a finger is inserted into the cut 3 and the piece 5a is pulled upward. Then, the perforation 1 is automatically broken, and the piece 5a is pulled up. Next, the piece 5b is pulled upward. Then perforations 2a, 2
b is broken and the piece 5b is pulled up.

FIG. 4 shows a state where the pieces 5a and 5b are pulled up and the front face 5 is opened. Note that the present invention is not limited to the above embodiment. For example, paper other than cardboard may be used as the material of the packaging box of the present invention, or plastic such as polyethylene or polypropylene may be used. In addition, various changes can be made within the scope of the present invention.

[Brief description of the drawings]

FIG. 1 is a development view of a packaging box according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a completed packaging box.

FIG. 3 is a perspective view showing a state where the packaging box is opened.

FIG. 4 is a perspective view showing the packaging box which has been opened and whose front is open.

FIG. 5 is a perspective view showing the structure of a conventional packaging box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Curved perforation 2a, 2b Straight perforation 3 Notch 4a-4d Flap 5 Front 5a, 5b Piece 6a-6d Fold 7 Flap 8 Side surface 9 Back surface 10 Side surface

Claims (4)

[Claims] 1. A packaging box, characterized in that a smooth curved opening perforation is formed on the opening surface of the packaging box, the ends of which are terminated at one side of the opening surface. 2. The packaging box according to claim 1, wherein the packaging box is a wrap round case. 3. The opening face is formed with two linear perforations that collide substantially at right angles with the curved perforations, and the two linear perforations are formed by the curved perforations. The packaging box according to claim 1, wherein both ends of the package box are terminated on one side opposite to the one side terminated. 4. The packaging box according to claim 1, wherein both ends of said curved perforations are separated by a fixed distance W from both corners of said one side of said opening surface.