JPH06293326A - Foldable package box - Google Patents

Abstract

PURPOSE:To make a box not having flaps on a bottom foldable. CONSTITUTION:A pair of folds L2, L2 which stand slantly 45 deg. from a corner of an end face 12 are formed respectively for end faces 12,12 and inner flaps 12a, 12a, so that they can be folded on a bottom 11. Side faces 13,13 and outer flaps 13a, 13a can be further folded on the folded end faces 12, 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding packaging box with an inner flap that can be continuously produced by a box making machine.

[0002]

2. Description of the Related Art A large number of cardboard boxes and thick cardboard packaging boxes are used as packaging materials for various products.

Although there are many types of cardboard boxes and the like, in order to effectively protect a product, it is preferable that the bottom face has no flaps and the product can be completely sealed. The lid side has a pair of inner flaps and outer flaps on all four sides of the opening (A type), and the one having an outer flap with an insertion flap only on one side of the opening (B type), In addition to a cover (C-shape) that covers a separate body, many modifications have been devised.

With the A type, after the products are stored, the inner flap is tilted inward, and the abutting portion or the overlapping portion of the outer flaps is taped, so that high sealing performance can be realized. In the case of B type, the outer flap is tilted inward and the insertion flap is inserted inside the facing side surface.
Since the openings can be closed all at once, the workability of storing products is good.

[0005]

However, according to the prior art, there is a problem that the one without a flap on the bottom cannot be folded at all because the bottom of the box cannot be opened. In other words, the delivery from the box manufacturer and the inventory on the user side must all be done in a state where the boxes are assembled three-dimensionally, which increases the transportation cost and significantly reduces the inventory efficiency. I will end up. Further, there is also a problem that the box assembly itself has to be done manually, and continuous production by a box making machine is impossible. This is because the box-making machine can generally only mount foldable products.

Therefore, an object of the present invention is to form a mountain fold line at an angle of 45 degrees with respect to the toe surface and the inner flap continuous to the toe surface (engraved from the lower surface of the material and bending the material into a convex shape on the upper surface). It is possible to fold as a whole even though it does not have a flap on the bottom surface by forming a fold line, which is the same below.) Therefore, a fold with an inner flap that enables continuous production by a box making machine. It is to provide a packaging box.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the structure of the present invention is a bottom face of a rectangle and a valley fold line (engraved from the upper surface of the material, and the material can be bent into a concave upper surface. Lines, the same applies hereinafter) to the bottom surface through a pair of toe surfaces and side surfaces, a pair of inner flaps that continue along the valley fold line to the toe surface, and both ends of each side surface through the valley fold line. The toe surface and the inner flap are formed with a pair of mountain fold lines that rise up at an angle of 45 degrees from the corners of the toe surface. The gist of the method is to fix it to both ends of the divided toe surface.

An outer flap can be attached to each of the side surfaces via a valley fold line.

An outer flap with an insertion flap can be attached to one of the side faces via a valley fold line,
At this time, an outer flap having an insertion opening corresponding to the insertion flap can be attached to the other side surface.

[0010]

According to the structure of the present invention, each of the pair of toe surfaces and the side surface is continuous with the bottom surface through the valley fold line, and the adhesive margin surfaces are formed at both ends of each side surface. Therefore, the three-dimensional box body can be completed by erecting each toe surface and the side surface and integrating the adjacent toe surface and the side surface through the adhesive margin surface.

However, a pair of mountain fold lines are formed on each toe surface and the inner flap. Therefore, each toe surface and the inner flap are connected to each other through the mountain fold line and at both end portions of the triangle and other portions. It is divided into the middle part. Therefore, the toe surface and the inner flap can be folded on the bottom surface as a whole, and only the both end portions can be folded back upward, and the side surface can be turned upside down with respect to the both end portions through the adhesive margin surface. It can be folded and fixed through the glue surface. Therefore, at this time, the whole is folded in a flat shape, and by raising the toe surface and the side surface, returning the mountain fold line to the flat surface, and bending the inner flap inward, it becomes a three-dimensional box body. It can be molded.

When an outer flap is attached to each side surface, the inner flap and the outer flap are provided at four sides of the opening.
A box-shaped body can be formed, and a B-shaped box can be formed by attaching an outer flap with an insertion flap to one of the side surfaces. However, the insertion flap may be inserted inside the corresponding other side surface, or may be inserted into the insertion opening of the outer flap attached to the other side surface.

[0013]

Embodiments Embodiments will be described below with reference to the drawings.

The folding packaging box has a bottom surface 11, a pair of toe surfaces 12, 12, a pair of side surfaces 13, 13, inner flaps 12a, 12a, outer flaps 13a, 13a, and glue margin surfaces 13b, 13b. (Fig. 1). In addition, toe side 1
A pair of mountain fold lines L2, L2 are formed respectively on the inner flaps 12a, 12a and the inner flaps 12a, 12a.
It is possible to fold it into a flat shape by pushing the toe surfaces 12 and 12 inward via 2, 2, L2 ...

A developed view of the folding packaging box is as shown in FIG. However, the material at this time may be double-faced cardboard, single-faced cardboard, thick cardboard, or the like.

The bottom surface 11 is divided by the valley fold lines L1, L1 ... Into a rectangle having a width W1 and a length H1. Bottom 1
Each of the four rounds of 1 has a width W2 through a valley fold line L1.
Toe surfaces 12, 12 and side surfaces 13 and 13, and each toe surface 12 is formed with an inner flap 12a having a width W5 via another valley fold line L1. In addition, one side surface 13
There is a wide outer flap 1 of width W3 through the valley fold line L1.
3a is formed, and on the other side surface 13, an outer flap 13a having a narrow width W4 is formed via a valley fold line L1. Further, glue margin surfaces 13b and 13b are formed at both ends of each side surface 13 through valley fold lines L1.
In addition, each paste margin surface 13b is substantially square and its width W
6. The length H2 is slightly smaller than the width W2 of the corresponding side surface 13 and toe surface 12, respectively.

Here, the dimensional relationship of each surface is W3 ≥ W4,
It is assumed that W1-W2-W4> W2 and W3 + W4≥W1. Also, the toe surfaces 12, 12 and the inner flap 12
a and 12a are respectively a pair of mountain fold lines L2 and L2 that rise at an angle of 45 degrees from the corner of the toe surface 12 on the base side.
Is engraved. However, the width W of each inner flap 12a
5 is set so as not to include the intersection of the pair of mountain fold lines L2 and L2. That is, the mountain fold lines L2 and L2 are
It shall not intersect inside the inner flap 12a.

Cut into a predetermined shape, and valley fold lines L1 and L1
The material in which the mountain fold lines L2, L2 ... Are engraved, firstly, the toe surfaces 12, 12 and the adhesive margin surfaces 13b, 13b ... are formed on the bottom surface 11 and the side surface 13 via the valley fold lines L1, L1. Fold it in (Fig. 3). At this time, the inner flaps 12a and 12a are attached to the corresponding toe surface 12, respectively. Subsequently, the corners 12c, 12c of the triangles at both ends of the toe surfaces 12, 12 are fitted to the inner flaps 12a, 12 via the mountain fold lines L2, L2.
Fold back upward together with part of a (the same figure).

Generally, on a box making machine, at the same time when one of the toe surfaces 12 and the glue margin surfaces 13b and 13b are folded, at the same time, the corner portions 12c and 12c are inserted through the mountain fold lines L2 and L2.
Is preferably folded back, and at this time, the valley fold line L1 between the toe surface 12 and the inner flap 12a must not be folded.
Therefore, the mountain fold lines L2, L2 are the valley fold lines L1, L1 ...
It is preferable to make it easier to break. For example, the valley fold line L1 is limited to engraving one ruled line from the upper surface of the material, and the mountain fold line L2 is engraved two ruled lines from the upper surface of the material and one ruled line from the lower surface. By providing the latter, the latter can be more easily broken than the former. In addition,
Once the mountain fold lines L2 and L2 start to fold, thereafter, the inner flap 12a will not be inadvertently fold along the valley fold line L1.

Next, the toe surfaces 12 and 12 facing upward
Are glued to the corners 12c, 12c, ... Of which the side surface 13 with the outer flap 13a having a narrow width W4 is folded over the bottom surface 11 through the valley fold line L1 (direction of arrow K1 in FIG. 3, FIG. 4). Therefore, the side surface 13 is between the bottom surface 11 and
The corresponding corner portions 12c, 12c and the glue margin surfaces 13b, 13b are overlapped on the bottom surface 11 with the sandwiched margin margin surfaces 1b, 13b sandwiched between the glue margin surfaces 1 at both ends.
By adhering 3b, 13b to the corners 12c, 12c, it is possible to connect to the toe surfaces 12, 12 on both sides. At this time, because of W1-W2-W4> W2,
The outer flap 13a folded on the bottom surface 11 is not adhered to the opposite corners 12c and 12c.

Next, a wide outer flap 13a having a width W3.
The side surface 13 on the side accompanied by is folded onto the bottom surface 11 (in the direction of arrow K2 in FIG. 4). Therefore, similarly, the side surface 13 is the adhesive margin surface 1
It can be connected to the adjacent toe surfaces 12, 12 via 3b, 13b. At this time, the glue margin surfaces 13b and 13b attached to the folded side surface 13 are W1-W.
By setting 2-W4> W2, the outer flap 13a which has been folded in first does not overlap. In this way, the whole can be folded into a flat plate shape by folding all the other surfaces on the bottom surface 11 (FIG. 5), and is completed by folding. However, FIG. 5 shows the case where W2 + W3 = W1.

Such a foldable packaging box, when used,
When the outer flap 13a on the upper side is pulled up (see FIG. 6).
Arrow K3 direction), mountain fold line L2 folded inward
, L2 ... gradually develops, and the toe surfaces 12 on both sides,
12 is standing up. Therefore, the lower outer flap 1
3a is also opened along with it, and easily becomes a half-opened state (FIG. 6). Therefore, by pushing both outer flaps 13a, 13a open to the left and right, the toe surface 12 around the bottom surface 11,
12, the side surfaces 13 and 13 can be erected at once and can be molded into a three-dimensional box (FIG. 1). At this time, the glue surface 1
3b, 13b ... Stand up along with the toe surfaces 12, 12, and the mountain fold lines L2, L2 ... Return to a flat surface, so that the whole is in close contact with the corresponding inner surface of the toe surface 12.
Therefore, the whole can maintain the shape in this state.

Next, when the inner flaps 12a, 12a are folded inward, the toe surface 12 and the inner flap 12a are at a right angle, so that the mountain fold lines L2 cannot be bent. Therefore, it is possible to completely maintain the shape of the regular box as a whole, and even if it is a cardboard box that has been folded for a long period of time, it is likely that the box will be deformed due to its restoring force. There is no such thing. In addition, when the whole is formed into a three-dimensional box in this way, the inner flaps 12a and 12a are then raised again and the mountain fold lines L2 and L are formed.
2 Even if it can be bent, it cannot be easily folded. This is because the lower side of each glue margin surface 13b contacts the bottom surface 11 to prevent the toe surfaces 12, 12 from falling on the bottom surface 11.

The box body in which the inner flaps 12a and 12a are folded inward is such that when the outer flaps 13a and 13a are sequentially tilted after the product is stored, the outer flap 1 is given by W3 + W4 ≥W1.
3a, 13a can be closed in a butt or superposed state and can completely seal the goods inside. Also, the outer flaps 13a, 1 closed in this way
The 3a may be fixed by a usual packing method such as taping or strapping. At this time, W3 = W4 = W1
If it is / 2, the outer flaps 13a, 13a can be closed in a butt state at the center.

In the above description, the bottom surface 11 has W1 =
It may be H1. That is, the rectangle referred to in the present invention includes a square.

Further, the outer flap 13a having a wide width W3 is
Set W3 ≈ W1 and insert a flap 1 on the outside.
4, 14 can be attached (two-dot chain line in FIG. 2).
The insertion flaps 14, 14 are different from the outer flap 13a in
It is assumed to be continuous through the valley fold line, and therefore, when the whole is folded, it can be folded toward the inside of the outer flap 13a (two-dot chain line in FIGS. 5 and 6). In addition,
The insertion flaps 14 and 14 are outer flaps 13a and 13a.
When closing, the outer flaps 13a, 13a can be fixed by inserting them into the insertion ports 14a, 14a provided corresponding to the base of the other outer flap 13a (two-dot chain line in FIG. 2). However, when the insertion flaps 14, 14 are provided on the one outer flap 13a, the other outer flap 13a may be omitted. At this time, the insertion flaps 14 and 14 may be inserted inside the facing side surface 13. It should be noted that the insertion flaps 14, 14 can be any number of 1 or 2 or more.

Further, both of the outer flaps 13a and 13a may be omitted, or W3 = W4 = W5. The box at this time can be used as a C-shaped box.

The glue margin surface 13b and the corner portion 12c of the toe surface 12 may be fixed by using a staple or the like instead of the adhesive.

[0029]

As described above, according to the present invention, the mountain fold line is formed by forming a pair of mountain fold lines that rise up at an angle of 45 degrees from the corner of the toe surface with respect to the toe surface having the inner flap. Since the adjacent side surfaces are connected to each other via the glue margin surface to both ends of the toe surface partitioned through, and the entire surface can be folded into a flat surface, it does not have a flap on the bottom surface. In addition to efficient continuous production using a box machine, there are excellent effects that transportation costs can be reduced and inventory efficiency can be significantly improved.

[Brief description of drawings]

FIG. 1 Overall perspective view

FIG. 2 Explanatory diagram

FIG. 3 Folding order explanatory diagram (1)

FIG. 4 Folding order explanatory diagram (2)

FIG. 5: Side view of folded state

FIG. 6 is an assembly explanatory diagram

[Explanation of symbols]

 L1 ... Valley fold line L2 ... Mountain fold line 11 ... Bottom surface 12 ... Toe surface 12a ... Inner flap 13 ... Side surface 13a ... Outer flap 13b ... Adhesive margin surface 14 ... Insert flap 14a ... Insert port

Claims (4)

[Claims] 1. A rectangular bottom surface, a pair of toe surfaces and side surfaces continuous with the bottom surface through valley fold lines, a pair of inner flaps continuous with the toe surface through valley fold lines, and a valley fold. A pair of mountain fold lines that rise from the corners of the toe surface at an angle of 45 degrees from each other on the toe surface and the inner flap. The fold packaging box is characterized in that the adhesive margin surface is fixed to both end portions of the toe surface defined by the mountain fold line. 2. The folding packaging box according to claim 1, wherein an outer flap is attached to each of the side surfaces via a valley fold line. 3. The folding packaging box according to claim 1, wherein an outer flap with an insertion flap is attached to one of the side surfaces via a valley fold line. 4. The folding packaging box according to claim 3, wherein an outer flap having an insertion opening corresponding to the insertion flap is attached to the other of the side surfaces.