JPH0542014Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a packaging box that can be folded when it is empty.

(Prior art) Conventionally, packaging boxes made of flexible packaging paper materials such as corrugated paper require only a small area of material, and can be manufactured automatically by machines without relying on manual production. There is a packaging box with a structure that reduces manufacturing time and costs.

This packaging box, which is generally called a Bliss box, is made from three rectangular paper boards, and has a pair of side plates B and C that stand up on the front and rear edges of a rectangular bottom plate A, as shown in Figure 7. , a pair of left and right pieces formed separately by connecting adhesive pieces D, E, F, G, H, and I bent inward at the left and right edges of the bottom plate A and the front and rear side plates B and C, respectively. The side plates J and K of the bottom plate A
the adhesive pieces D, E and F, G,
It has a structure in which it is attached by adhering to H and I, and further a lid piece L is connected to the upper end of the rear side plate C.

When the contents are packaged in this packaging box, the tabs M, which are connected to the upper edges of the left and right side plates J, K,
Fold N inward, close the lid with the lid piece L while folding the tongue piece O connected to the tip edge of the lid piece L, and close the lid with the tongue piece O.
is inserted into the inner surface of the front side plate B and glued in some cases.

However, since each component of this packaging box is glued and fixed, it cannot be folded, and even when it is empty, it is bulky and requires a large space for storage. Difficult to transport large quantities at once. Therefore, the efficiency of storage and transportation decreases, making it uneconomical.

(Issues to be Solved) This invention eliminates the conventional inconveniences while maintaining the structure that reduces the time and cost involved in manufacturing Bliss Boxes, and can be folded when empty, saving space. The purpose of the present invention is to provide an economical packaging box that can be efficiently stored and transported.

Furthermore, it is an object of the present invention to provide a packaging box that prevents the box from folding when it is returned to a packageable shape after being folded, and that allows the contents to be easily stored.

(Means for Solving the Problems) In order to achieve the above object, the present invention has a pair of side plates connected to the front and back of a rectangular bottom plate, which are erected along the respective fold lines, and the bottom plate and the front and rear side plates are erected. The adhesive pieces provided on the left and right edges of each are bent inward through the fold line, and a pair of independent left and right side plates are positioned perpendicularly to the bottom plate and adhered with the adhesive pieces to the adhesive pieces, and the front and rear In a packaging box that is closed with a lid piece provided on the upper edge of the side plate, a folding piece that is bent inwardly or outwardly through a fold line is provided on the upper edge of the front side plate, and each of the left and right side plates is provided with an inward folding line that slopes at a predetermined angle from the corner on the rear side plate side of the bottom edge to the top edge,
The front side plate and the folded piece are provided with an outward folding line that extends from the right and left corners of the bottom edge to the upper edge of the folded piece and is inclined at a predetermined angle, and a fold line at the boundary between the front side plate and the folded piece is provided. A plurality of U-shaped cuts are provided perpendicular to the line of sight, and when the folded piece is folded inwardly or outwardly through a fold line at the boundary between the front side plate and the folded piece, the cut on the fold line It is characterized in that the tongue piece portion formed by is provided at a height that projects upwardly from the folded position of the folded piece and prevents the folded piece from standing up.

Further, a reinforcing plate having a width less than or equal to the left and right side plates is connected to the front side of the left and right side plates via a fold line at the same height as the front plate side, and the reinforcing plate is arranged on the inner surface of the front side plate. shall be.

(Function) When the present invention is folded by such a means, the folding lines of the left and right side plates are bent so as to be pushed inward, and at the same time, the folding lines of the front side plates are turned outward and the front side plates are folded. I fold it down as if to knock it down. By doing so, the folding lines of the left and right side plates and the folding line of the front plate are bent at an acute angle, and the fold lines of the left and right edges and the rear edge of the bottom plate and the fold lines of the left and right edges of the rear plate are bent at an acute angle. All other fold lines open at acute angles, and the entire box is folded into a substantially flat plate shape.

Furthermore, when returning a folded box to a shape suitable for packaging, the folded portion along the folding line may be flattened.

Furthermore, each folding line has a folding tendency and tries to return to the folded state, so by bending the folded piece at right angles to the front side plate, each folding line is stretched flat and the folding tendency is eliminated. It can be eliminated. At this time, due to the plurality of U-shaped cuts that were made on the fold line when the folded piece was folded, the remaining tongue piece maintains the folded piece in a state where it intersects the folding line, and this causes the front side plate to This makes it possible to maintain an upright position.

Furthermore, when reinforcing plates are provided that are connected to the left and right side plates, when each folding line has a tendency to fold as described above and attempts to return to the folded state, the lower ends of the reinforcing plates prevent the plate from tilting in the folding direction. , furthermore, its upper edge supports the lid piece and prevents its depression. When the reinforcing plate is provided in this manner, the entire box can be folded into a flat plate without any problems by folding the reinforcing plate into the inner surfaces of the left and right side plates.

(Example) A detailed explanation will be given below with reference to FIGS. 1 to 3 showing an example of implementation of the present invention.

A folding packaging box 1 made of a flexible packaging paper material such as corrugated paper has a rectangular external appearance as shown in FIG.
It is made of rectangular paperboard.

One of the paperboards 2 has a front side plate 4 and a rear side plate 5 connected to the front and rear edges of a rectangular bottom plate 3 via fold lines a and b, and the bottom plate 3, the front side plate 4, and the rear side plate 5.
Crease lines c, d, e, f,
adhesive pieces 6, 7 and 8, 9, 10,
11 are installed in succession. Furthermore, a folded piece 12 is connected to the upper edge of the front plate 4 when it is erected via a fold line i. Nine U-shaped incisions j are formed on the fold line i, and the incisions j, which will be described later, are used to cut the folded piece 12 through the fold line i, as shown in FIG. When folded inwardly or outwardly, a tongue portion is formed along the cut j. The notch j is provided so that the tongue portion thereof projects upward from the folded position of the folded piece 12 and has a height that prevents the folded piece 12 from standing up. To explain in detail, when the folding piece 12 is folded back, the height of the tongue portion formed by the cut j is 1 mm or more higher than the thickness of the paper material that is the material of the packaging box 1. This is preferable in order to prevent 12 from standing up. Therefore, as shown in FIG. 2, when the tongue portion is formed, the height of the tongue portion is greater than the thickness of the paper material at the portion of the U-shaped cut j that is perpendicular to the fold line i. It is also cut into a size that is 1 mm or more higher. Further, a lid piece 13 is connected to the upper edge of the front and rear side plates 5 when they are erected, via a fold line k.
A tongue piece 14 is connected to the tip edge of the lid piece 13 via a fold line m.

In addition to the paperboard 2 having the above configuration, the left side board 15 and the right side board 16 are created separately and independently. Then, when the left side plate 15 and the right side plate 16 are vertically erected, the tabs 17,
18 are installed in a row.

Furthermore, when the front side plate 4 is stood up, the folding lines W, Similarly, when the left side plate 15 and the right side plate 16 are vertically erected, the outer peripheral edges of the ear pieces 17 and 18 are provided from the corner of the rear side plate of the bottom edge of each. Folds Y and Z are provided across the upper edge of the folded piece, each folding inwardly at the same angle β. At this time, the angles α and β are the same, and in this example, they are all 45°.

Assemble the three sheets of paperboard having such a configuration in the following order.

First, the plate 4 and the rear plate 5, which are connected to the bottom plate 3 of the paperboard 2, are erected along the fold lines a and b.

Next, the adhesive pieces 6, 8, and 10 connected to the left edges of the bottom plate 3, front side plate 4, and rear side plate 5, respectively, are attached to the fold line c.
Bend inward at right angles at e and g, and glue the pieces 6,
The left side plate 15 is glued vertically to the bottom plate 3 to the inside of the parts 8 and 10. In the same way, adhesive pieces 7, 9,
11 is bent inward at fold lines d, f, and h, and the right side plate 16 is glued perpendicularly to the bottom plate 3 inside the adhesive pieces 7, 9, and 11.

Place the contents in the box assembled in this way, and finally fold the left and right ear pieces 17 and 18 inward, then fold the folded piece 12 inward, and then close the lid piece 13.
The lid is closed, the inner surface of the tongue piece 14 is inserted into the inner surface of the front plate 4, and the package is glued.

Next, the case where the packaging box of this embodiment is folded in an empty state for storage or transportation will be explained with reference to FIG.

First, as shown in Fig. 3A, fold back piece 12 and lid piece 1.
3, the tongue piece 14, and both left and right ear pieces 17 and 18 are stood vertically.

Next, as shown in FIG. 3B, the front side plate 4 is pushed outward, folding lines W and X are folded outward, and at the same time, left and right folding lines Y and Z are folded inward. At this time, the folding lines W, X, Y, Z as well as the folding lines b, c, d, g, h are bent at acute angles,
All of the fold lines a, e, f, i, k, m, n, and o are bent.

Then, it is folded into a substantially flat plate shape as shown in FIG. 3C.

By folding the product as described above, it does not take up much space for storage and can be transported in large quantities, increasing efficiency.

Furthermore, if the contents have a tendency to fold on the folding lines W, This can be prevented by bending the folded piece 12 at right angles to the front plate 4. That is, when the folded piece 12 is bent at right angles to the front plate 4, a tongue piece is formed on the upper edge of the front plate 4 due to the U-shaped cut j interposed at the fold line i at the boundary between the front plate 4 and the folded piece 12. is formed protrudingly,
A fold line i of the folded piece 12 corresponds to this tongue piece part.
A cutout hole is formed on the side. At this time, as described above, the tongue portion protrudes upward from the folded position of the folded piece 12, and its both side edges engage the inner edges on both sides of the hole portion at the folded piece position 2 by friction, and the tongue piece portion protrudes upward from the folded position of the folded piece 12. Maintain bending condition. In this way, since the folded piece 12 is prevented from standing up by the tongue portion formed by the cut j, the folded piece 12 crosses the folding lines W and X, and the front plate 4 is maintained in its standing state.

4 to 6 show another embodiment of the present invention. In this embodiment, as shown in the figures, there is a crease line p on the front side plate 4 side of each of the left and right side plates 15, 16 of the previous embodiment. , q at the same height as the front plate 4,
Other configurations are the same except that reinforcing plates 19 and 20, which are slightly smaller in width than the left and right side plates 15 and 16, are arranged in series and arranged on the inner surface of the front side plate 4. Therefore, common configurations will be given the same reference numerals and descriptions will be omitted.

Since the present embodiment is constructed in this way, as shown in FIG.
supports tilting along X, Y, and Z;
The upper edge supports the lid piece 13 to prevent it from falling down.

In addition, as shown in FIG. 6, folding lines W, X,
When the entire box is folded into a flat plate shape by Y and Z, the reinforcing plates 15 and 16 can be folded into the inner surfaces of the left and right side plates 15 and 16 without any problem.

(Effects) Therefore, according to the packaging box of the present invention, the area of the material is small, and furthermore, it can be manufactured automatically by a machine without relying on manual manufacturing, reducing manufacturing time and costs. Furthermore, when the box is empty, it can be easily folded by folding along the folding line.
It is possible to provide an economical packaging box because it does not take up storage space and can be transported in large quantities with a small number of transports.

In addition, when returning to a wrapperable shape after folding, by folding the folded piece inward or outward, a tongue piece is formed on the upper edge of the front plate by a cut to maintain the folded state of the folded piece, Since the folding piece prevents the folding line from bending, it is possible to provide a packaging box that prevents folding and allows the contents to be easily stored.

Furthermore, by placing the reinforcing plate along the inner surface of the front plate, it is possible to provide a packaging box that reliably prevents deformation due to folding habits, supports the lid piece, and has improved pressure resistance.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a packaging box according to an embodiment of the present invention in an open state, Fig. 2 is a developed view of Fig. 1, Fig. 3 is an explanatory view showing the folding process, and Fig. 4 is an explanatory view showing the folding process. A developed view of a packaging box according to another embodiment of the present invention, FIG.
FIG. 6 is a perspective view showing a folded state, and FIG. 7 is a perspective view showing a conventional packaging box. 3...Bottom plate, 4...Front side plate, 5...Rear side plate,
6, 7, 8, 9, 10, 11...Adhesive piece, 12...
...Folding piece, 13...Lid piece, 15...Left side plate, 1
6... Right side plate, 19, 20... Reinforcement plate, a, b,
c, d, e, f, g, h, i, j, p, q...Fold line, W, X, Y, Z...Fold line.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A pair of side plates connected to the front and back of a rectangular bottom plate are erected along the respective fold lines, and adhesive pieces are attached to the left and right edges of the bottom plate and the front and rear side plates, respectively. Bend it inward along the fold line, place a pair of independent left and right side plates perpendicularly to the bottom plate and adhere them with the adhesive piece, and close with a lid piece provided on the upper edge of the rear side plate. In the packaging box made of
Each of the left and right side plates is provided with an inward folding line that slopes at a predetermined angle from a corner on the rear side plate side of the bottom edge to the top edge, and the front side plate and the folded piece are provided with a folding line on the bottom edge thereof. An outward folding line that is inclined at a predetermined angle is provided from the left and right corners to the upper edge of the folded piece, and a plurality of U-shaped cuts are made perpendicular to the fold line at the boundary between the front side plate and the folded piece. and when the folded piece is folded inwardly or outwardly through the fold line at the boundary between the front side plate and the folded piece, the tongue piece formed by the notch of the fold line is removed from the folded piece. A packaging box characterized in that the packaging box is provided at a height that protrudes above the folding position and prevents the folding piece from standing up. 2. A pair of side plates connected to the front and back of a rectangular bottom plate are made to stand up along the respective fold lines, and the adhesive pieces provided on the left and right edges of the bottom plate and the front and rear side plates are folded inward through the fold lines. In the packaging box, a pair of left and right side plates, each independent of the adhesive piece, are positioned perpendicularly to the bottom plate and adhered by the adhesive piece, and closed with a lid piece provided on the upper edge of the rear side plate. A packaging box characterized in that a reinforcing plate having a width equal to or less than the left and right side plates is connected to the front side of the left and right side plates via a fold line at the same height as the front side plate, and the reinforcing plate is arranged on the inner surface of the front side plate. .