JPH0311142Y2 - - Google Patents

Description

[Detailed Description of the Invention] Field of Industrial Application The present invention relates to a packaging box, and more particularly to a packaging box that can be assembled by effectively utilizing almost the entire rectangular panel.

〓Summary of the invention〓 The invention consists of providing a diagonal bottom plate approximately in the center of a rectangular panel, and connecting side plates on each of the four sides of the bottom plate, and attaching a corner of the panel to the tip of these side plates. In a packaging box in which a top plate is assembled by forming approximately triangular flaps, these flaps are arranged symmetrically with respect to the center and in the long side direction on one of the four side plates. A pair of circular openings are formed as shown in FIG. The packaging box is opened by cutting these two types of cutting guide parts, thereby making it possible to reuse the packaging box after opening. .

〓Prior art〓 Packaging boxes made of paperboard have conventionally been used to store and supply various articles. That is, various articles are stored in a rectangular parallelepiped packaging box made of paperboard or corrugated base paper, and the articles are transported while being protected by the packaging box. In particular, in order to effectively utilize the paperboard or corrugated cardboard that makes up the packaging box,
The applicant of this application is Utility Application No. 101052 (1983)
No. 8919), a bottom plate is provided diagonally at approximately the center of a rectangular panel so as to form an angle of 45 degrees with respect to the peripheral edge of the panel, and side plates are connected to each of the four sides of this bottom plate, Moreover, a packaging box is proposed in which a substantially triangular flap is formed by the corners of the panels at the tips of these side plates. In this case, the top plate of the packaging box is assembled by combining substantially triangular flaps.

〓Problems to be solved by the invention〓 According to such a packaging box, it is possible to effectively utilize almost the entire rectangular panel that makes up the packaging box, thereby reducing waste of panels. It becomes possible to significantly reduce the amount. However, the top plate of such a panel is constructed by combining four approximately triangular flaps. Therefore, when such a flap is opened and unsealed, a large opening is formed at the top, and the panel remains assembled in a rectangular parallelepiped shape by joining the flaps forming the top plate. Therefore, when the flap is separated and the top plate is opened, the box loses its form as a packaging box.

This invention was created in view of these problems, and it is possible to reuse it even after opening.
Moreover, it is an object of the present invention to provide a packaging box that maintains its form as a packaging box.

〓Means for solving the problem〓 In this invention, a bottom plate is provided diagonally in the approximate center of a rectangular panel so as to make an angle of 45 degrees with respect to the periphery of the panel. In the packaging box, each side plate is arranged in a row, and a substantially triangular flap is formed at the tip of each side plate by the corner of the panel, and the top plate is assembled by combining and fixing these flaps. A pair of circular openings are formed approximately symmetrically with respect to the center of one of the four side plates and juxtaposed in the long side direction of the side plate, and radially from the circular opening. A second cutting guide part is provided on the side plate to form a first cutting guide part extending to the peripheral edge of the side plate and connect the peripheral parts of the pair of circular openings, and the first cutting guide part and Said second
The package is opened by cutting the cutting guide section.

<Operation> Therefore, according to the present invention, the side plate is opened by cutting the first cutting guide part and the second cutting guide part, and thereby the packaging box is opened. be able to. Moreover, even if the package is opened in this manner, the flaps forming the top plate remain assembled together, so that the form of the packaging box is maintained.

〓Example〓 The present invention will be described below with reference to an illustrated example.
FIG. 1 shows a packaging box according to an embodiment of the present invention, and this packaging box is constructed of square corrugated cardboard sheets 10. In this example, corrugated paperboard 1
0 is composed of a single layer of corrugated paperboard, with the layer exposed on the inner surface. Furthermore, the direction of the corrugations of this corrugated paperboard 10 extends in the left-right direction in FIG. A rectangular bottom plate 11 is provided approximately at the center of the cardboard base paper 10 so as to form an angle of 45 degrees with respect to the peripheral edge of the base paper 10. A long side side plate 14 and a short side side plate 15 are connected to the long side and short side of the bottom plate 11 via bending lines 12 and 13, respectively. Note that these side plates 1
4 and 15, their heights are equal to each other.

An auxiliary plate 16 forming a right isosceles triangle is provided at the corner between the long side side plate 14 and the short side side plate 15.
is beginning to form. This auxiliary plate 16
is separated from both ends of the long-side side plate 14 by a notch 17, and is bendably connected to both ends of the short-side side plate 15 by a bending line 19.
Further, V-shaped notches 19 are formed at the upper end and the tip of the auxiliary side plate 16, respectively. Furthermore, a long side flap 20 and a short side flap 21 are provided at the tip of the long side side plate 14 and the short side side plate 15, respectively, along the bending line.
2 and 23.
Both of these flaps 20, 21 form a substantially right isosceles triangle.

Further, in this corrugated paperboard 10, a pair of circular holes 24 are formed in one of the pair of short-side side plates 15, that is, the lower right side plate 15 in FIG. Perforations 25 are formed so as to. Furthermore, a pair of perforations 26 are formed parallel to each other so as to connect the outer peripheries of the pair of circular holes 24. Each of these perforations 25 and 26 forms a cutting guide for opening the package.

Next, the operation of assembling a rectangular parallelepiped packaging box using the corrugated cardboard base paper 10 having the above-described configuration will be explained. When assembling a packaging box, as shown in FIG. Then, the side plates 14 and 15 are bent at right angles at the bending lines 12 and 13, respectively. Then, after bending the short-side side plate 15 at right angles to the bottom plate 11, bend the auxiliary plates 16 at right angles at the bend lines 18 on both sides of the bottom plate 15. are arranged so as to overlap inside the long side side plate 14. Then, the long side side plate 14 and the auxiliary plate 16 are glued and joined. By gluing and joining the long side side plates 14 and the auxiliary plate 16 in this way, the short side side plates 15 facing each other are prevented from opening, and the strength when assembled as a packaging box is improved. become.

In this way, a packaging box having a rectangular parallelepiped shape is assembled. Therefore, it becomes possible to store a predetermined article inside the packaging box through the upper opening. Once the items have been stored, the packaging box can be closed as shown in FIG. That is, first, the short side flap 21 is bent at a right angle to the short side side plate 15 at the bending line 23. Next, the long side flap 20 is bent at right angles to the long side side plate 14 at the bending line 22. In this way, four right-angled isosceles triangle flaps 2
0 and 21 are combined with each other as shown in FIG.
The overlapping parts are joined by gluing or the like. This closes the top opening of the packaging box to protect the items stored inside.

Next, when taking out the article stored in such a packaging box, the packaging box is opened as shown in FIG. That is, the circular hole 24 is used to cut the perforation 26, and the perforation 2 is also cut.
5 and rotate the part surrounded by the two perforations 25 and 26 to open it. This causes the packaging box to be opened and the items stored therein to be removed.

According to such a packaging box, as is particularly clear from FIG. 1, it is possible to assemble a packaging box by using square cardboard base paper 10 and making effective use of almost the entirety thereof. Therefore, the utilization efficiency of the base paper 10 is very high, and this makes it possible to eliminate panel waste. Furthermore, as is clear from FIG. 1, all the folding lines formed for assembling this packaging box form an angle of 45 degrees with respect to the corrugated cardboard base paper 10. During this process, the folding line does not shift due to the steps of the base paper 10, and the withstand pressure in all directions remains constant, and no localized portions of weak withstand pressure occur.

Further, according to this packaging box, the packaging box can be opened by tearing the perforations 25 and 26, respectively, using the circular hole 24 formed in the short side side plate 15 as described above. become. Therefore, the unsealing operation becomes very easy. Furthermore, according to such opening, the packaging box functions as a box even after being opened, and it becomes possible to reuse it after opening. Furthermore, since the triangular flaps 20, 21 constituting the top plate are not opened, it is possible to maintain the form as a packaging box even after opening.

Next, a modification of the above embodiment is shown in FIGS. 5 and 6.
This will be explained with reference to the diagram. In this modification, only one perforation 26 connecting the pair of circular holes 24 of the side plate 15 is formed, and it is formed at a position connecting the centers of the pair of circular holes 24. Accordingly, when such a packaging box is opened, it will be in a state as shown in FIG. 6. According to such a modification, an advantage is provided that the opening when resealing the package after opening becomes smaller.

Next, still another modification will be explained with reference to FIGS. 7 and 8. A feature of this modification is that the first perforation 25 is formed obliquely so as to connect the center of the circular hole 24 and the corner of the side plate 15. Therefore, with such a configuration, the package can be opened by cutting the perforations 25 and 26 as shown in FIG. 8. That is, according to such an unsealing structure, almost the front side of the side plate 15 can be unsealed, making it possible to obtain a large opening area.

Next, further modified examples are shown in FIGS. 9 and 10.
This will be explained with reference to the diagram. In this modification, the first perforation 25 is formed to connect the center of the circular hole 24 and the corner of the side plate 15, as in the above modification, and the first perforation 25 is formed at a position connecting the centers of the pair of circular holes 24. 2
Perforations 26 are formed. Therefore, even in this modification, a large opening area can be obtained when the package is opened, similar to the above embodiment. Furthermore, according to this modification, there is an advantage that the area of the opening when resealing after opening is smaller than that of the above modification.

= Effect of the invention = As described above, the present invention has a pair of circular openings that are arranged approximately symmetrically with respect to the center of one of the four side plates and juxtaposed in the long side direction of the side plate. and a first cutting guide part extending radially from the circular opening to the peripheral edge of the side plate, and a second cutting guide part connecting the peripheral edges of the pair of circular openings is provided in the side plate. The package is opened by cutting the first cutting guide part and the second cutting guide part.

Therefore, by cutting the first cutting guide part and the second cutting guide part, it is possible to use the circular openings to open the side panels other than the top plate in which these circular openings are formed. It becomes possible. In this case, the part of the top plate formed by combining and fixing the roughly triangular flaps formed by the corners of the panels that make up the packaging box will remain closed, and for this reason Even if the portion in which the circular opening is formed is opened, the packaging box maintains its shape, thereby making it possible to reuse the packaging box after opening.

[Brief explanation of the drawing]

Fig. 1 is a developed plan view of a corrugated board constituting a packaging box according to an embodiment of the present invention, Fig. 2 is an external perspective view showing the assembled state, and Fig. 3 is an external perspective view of the assembled packaging box. , FIG. 4 is an external perspective view of the packaging box in an opened state, FIG. 5 is an external perspective view of a packaging box according to a modified example, FIG. 6 is an external perspective view of the same in an unsealed state, and FIG. 7 is separate. An external perspective view of a packaging box of a modified example of
FIG. 8 is a perspective view of the packaging box in its unsealed state, FIG. 9 is a perspective view of the packaging box in another modified example, and FIG. 10 is a perspective view of its packaging box in its unsealed state. In addition, in the symbols used in the drawings, 10... Corrugated cardboard base paper, 11... Rectangular bottom plate, 14... Long side side plate, 15... Short side side plate, 20... Long side flap, 21... Short side plate. Side flap, 24... circular hole, 25, 26... perforation.

Claims (1)

[Scope of utility model registration request] A bottom plate is provided diagonally at approximately the center of the rectangular panel so as to make an angle of 45 degrees with respect to the peripheral edge of the panel, and side plates are connected to each of the four sides of this bottom plate,
Furthermore, in a packaging box in which a top plate is assembled by forming approximately triangular flaps at the tips of these side plates using the corners of the panels, and by combining and fixing these flaps, one of the side plates on the four sides is A pair of circular openings are formed approximately symmetrically with respect to the center of one side plate and juxtaposed in the longitudinal direction of the side plate, and a pair of circular openings are formed radially from the circular opening to the peripheral edge of the side plate. providing the second cutting guide part on the side plate, the second cutting guide part forming one cutting guide part and connecting the peripheral edges of the pair of circular openings;
A packaging box characterized in that the packaging box is opened by cutting the first cutting guide part and the second cutting guide part.