JP3053776B2 - Prefabricated packaging paper box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prefabricated packaging paper box, for example, a packaging paper box used for packaging take-out food.

[0002]

2. Description of the Related Art Conventionally, this type of packaging paper box is made of cardboard having one side coated with a thin material such as a synthetic resin film having high waterproof properties, an aluminum vapor-deposited film, and aluminum foil. Adjacent side walls of the front, rear, left and right four side walls, which are continuously formed through four folds on the four sides of the square bottom wall having the inner surface as the inner surface, are connected to both ends of each side wall and are connected to each other through oblique folds. 2. Description of the Related Art A packaging paper box is known which is connected via a pair of provided triangular connecting pieces and which is connected to an inner surface of a side wall.

In such a paper box, since the inner surface of the box is covered with a thin waterproof material such as a synthetic resin film or aluminum foil, the food brought back is kept in a wrapping paper box and heated in a microwave oven or the like. On the other hand, the thin material is coated on both the inner surface of the triangular connecting piece and the inner surface of the side wall, so that it is somewhat difficult to join the surfaces.

[0004] That is, if joining is performed using a relatively inexpensive hot melt adhesive, there is no problem at room temperature.
When reheating with a microwave oven or the like, if the temperature in the heated microwave oven rises to about 60 degrees Celsius, the hot melt may start to melt, making it difficult to maintain the box shape of the paper box.

[0005] In addition, with relatively inexpensive emulsion adhesives that are generally used for joining thick papers, it is difficult to join the surfaces covered with a thin material, and it is difficult to join the synthetic resin films or aluminum. Adhesives for joining foils, although present, are somewhat expensive. Of course, it is easy to perform the joining using stitching fasteners. However, considering that the paper box is used for reheating in a microwave oven, the joining using the stitching fasteners cannot be substantially adopted.

Further, in the paper box in which the triangular connecting piece is joined to the inner surface of the side wall, steam is filled in the box during heating by the microwave oven, and the water enters between the triangular connecting piece and the side wall. The junction between the triangular connecting piece and the side wall was sometimes dissociated. Moreover, if the thin material covering the inner surface of the triangular connecting piece is destroyed for any reason, paper dust scatters from the broken portion and impairs food hygiene, or the triangular connecting piece may be damaged. In some cases, the paper box of the triangular connecting piece itself was broken due to the moisture and the paper box was disassembled.

It is also conceivable to join the pair of triangular connecting pieces to the outer surface of the side wall. However, in order to secure shape retention, the pair of triangular connecting pieces must be further joined together. In this case, the inner surface of one triangular connecting piece covered with the thin material is joined to the inner surface of the other triangular connecting piece also covered with the thin material, so that the emulsion adhesive is eventually used. Was not able to be joined.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a relatively inexpensive emulsion-based adhesive commonly used for joining cardboards is used to connect the connecting pieces. The joint with the side wall is securely held, the structure of the box of the paper box is not impaired, and there is no danger of the joint being dissociated when heated by a microwave oven. It is an object of the present invention to provide an assembling-type packaging paper box capable of hygienically protecting food even when broken.

[0009]

In order to achieve the above object, the present invention employs a structure in which an inner surface of a connecting piece covered with a thin material having a high waterproof property can be joined to an outer surface of a side wall which is a paper exposed surface.

That is, according to the first aspect of the present invention, one side is waterproof.
Synthetic resin film, aluminum evaporated film,
It is made from cardboard coated with a thin material such as lumi foil,
Four corners of a square bottom wall with thin wood inside
The adjacent side walls of the four front, rear, left and right side walls are
It is connected to both ends of the wall and connected to each other through the oblique fold for connecting piece.
Connected via the provided first connection piece and second connection piece.
At the same time, the lower end corner of the side wall is the base end at the end of the side wall on the first connection side.
Is provided, and a first sloping fold above the first sloping fold is provided.
Bend the first triangular part toward the inner surface of the side wall and fold it flat
A foldable packaging paper box that can be folded
The first connecting piece is set to be larger than the second connecting piece.
That can be joined to the outer surface of the side wall on one side of the second connection.
Hand to be made, through the crease on the side wall on the edge of the first connection side
The lid piece is continuously provided, and the side end of the lid piece is
A second diagonal fold is provided with the upper end of the diagonal fold as a base end.
And bending the lid piece toward the outer surface of the side wall to form the second oblique fold.
The second triangular portion on the side of the eye overlaps the outer surface of the first triangular portion.
The first triangular portion and the second triangular portion
Can be folded flat on the inside of the wall
The main feature is a prefabricated packaging paper box.

According to a second aspect of the present invention, each side wall is longer than the lower side length.
Also employs a configuration in which the length of the upper side is set larger.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIGS. 1 to 7 show an embodiment of a prefabricated packaging paper box (A) according to the present invention. The packaging paper box (A) has a synthetic resin film having a high waterproof property on one side. , Made of cardboard coated with a thin material (F) such as an aluminum vapor-deposited film or an aluminum foil. Then, longitudinal and lateral four side walls (2) (2) (3) (4) of the adjacent side walls to each other is provided continuously across each sidewall connecting piece for slant fold (17) to each other (17) (17 ) (17), a first connecting piece (7), (7), (7), (7) and a second connecting piece (6) connected to each other via (17).
(6) (6) They are connected via (6).

The wrapping paper box (A) is a tapered paper box, which will be described in detail with reference to the developed state shown in FIG. 3. ), The left and right side walls (2) and (2) are continuously provided from the pair of opposing edges via the folds (10) and (10), and the front and rear sides from the other pair of opposing edges via the folds (11) and (12). Side walls (3) and (4) are provided continuously. These front, rear, left and right side walls (2) (2)
In each of (3) and (4), the upper side length is set to be slightly larger than the lower side length, and constitutes four side walls of the tapered paper box.

The front and rear side walls (3) and (4) are provided with first sloping folds (13), (13), (14) and (14) which rise obliquely from the lower corners at an angle of about 50 degrees. The first triangular portions (18), (18), (18), and (18) above the first oblique fold are formed from the first oblique folds (13), (13), (14), and (14) to the front and rear side walls ( 3) It can be folded on the inner surface side of (4).

Further, the front and rear side walls (3) and (4) are firstly separated from both ends thereof through folds (15) (15) (15) (15).
The connecting pieces (7), (7), (7), and (7) are provided in series. The first connecting pieces (7) are provided on the left and right side walls (2).
The second connecting pieces (6), (6), (6), (6), which are connected from both ends of (2) through the folds (16), (16), (16), (16),
The connection pieces are connected to each other through oblique folds (17), (17), (17), and (17). The first connecting pieces (7) are larger in size than the second connecting pieces (6) and are superposed and attached to the outer surfaces of the left and right side walls (2) and (2) at the time of manufacture. It has been done.

The rear side wall (4), which is one of the side walls on the first connecting piece (7) ... side, has a fold (20) from its upper edge.
A lid piece (8) is continuously provided through the opening, and the lid piece (8) can be bent from the fold (20) to the outer surface side of the rear side wall (4). The lid piece (8) is formed at the left and right ends thereof so as to form an angle of about 50 degrees with respect to the fold (20) from the upper end of the first oblique fold (14) (14). The second slanted folds (22) and (22) are provided, and a second side of the second slanted fold is formed by a bending operation of the lid piece (8) toward the outer surface of the rear side wall (4). The triangular portions (23) and (23) overlap with the outer surfaces of the first triangular portions (18) and (18) of the rear side wall (4) to form the first triangular portions (18) and (18) and the second triangular portion. The triangular portions (23) and (23) can be folded from the first oblique folds (14) and (14) and the second oblique folds (22) and (22) to the inner surface side of the rear wall (4). It has been done.

Also, a fold (21) is formed from the tip edge of the lid piece (8).
A folded piece (9) is continuously provided through the fin and a substantially arcuate locking notch (24) is provided at the center of the folded piece (9). On the other hand, a pair of groove-shaped notches (25) and (25) are provided at the center of the upper end of the front side wall (3) to form a locking projection (26) to be inserted into the locking notch (24). ing.

In the figure, (5) and (5) are left and right side walls (2).
(2) A folded piece continuously provided from the upper edge through folds (19) and (19), and (S) is an adhesive layer.

The packaging paper box (A) having the above structure is suitable for so-called mechanical bonding in which bending and bonding of required portions are mechanically performed from the above-described expanded state. First, the surface coated with a thin material (F) such as a synthetic resin film, aluminum vapor-deposited film, aluminum foil, etc., which is highly waterproof, is set as the inner surface, and the fold (2
As shown in FIG. 4 from 0), the lid piece (8) is folded back to the outer surface side of the bottom wall (1). Next, in this state, after applying the emulsion adhesive to substantially the entire inner surface of the first connecting piece (7), the left and right side walls (2) and (2) start from the folds (10) and (10).
To the inner surface of the bottom wall (1). By this operation, the first connecting piece (7) and the second connecting piece (6) are also folded (15).
Is folded back to the inner surface side of each of the front and rear side walls (3) and (4). As described above, each of the side walls (2), (2), (3) and (4) has a slightly larger upper side length than a lower side length. , The first connecting piece (7)... And the second connecting piece (6)
Cannot be folded back into contact with the inner surfaces of the front and rear side walls (3) and (4), and lift the first triangular portion (18) from the fold (15) and receive the first triangular portion. The shape portions (18) ... are bent from the folds (13) (14) ... and stand slightly up. At the same time, the second triangular part (2
3) (23) is the first triangular portion (18) (1) of the rear wall (4).
It is lifted by 8) and bent from the folds (22) and (22), and slightly rises in a state of overlapping on the outer surfaces of the first triangular portions (18) and (18). Then, as shown in FIG. 5, the first triangular portions (18) (18) of the front side wall (3).
And the second triangular portions (23) and (23) of the rear side wall (4) are pushed in the directions of arrows (a) and (b) and arrows (b) and (b), respectively, so that the first connecting piece (7). The side walls (2) and (2) are superposed and adhered to the outer surface of the end, and are flattened as shown in FIG. In this state, the thin material (F) coated on the inner surface of the first connecting piece (7) and the left and right side walls (2) which are the paper exposed surfaces
Since the outer surface of (2) is polymerized, a good state of attachment with the emulsion adhesive can be obtained.
The flat folded state is handled at the time of transportation and storage until use.

Further, the packaging paper box (A) having the above structure is convenient even when assembled in a box form from this flat folded state. That is, when the lid piece (8) overlapping the outer surface of the bottom wall (1) is folded from the fold (20) toward the outer surface side of the rear side wall (4) in the direction of arrow (c) in FIG. The side wall (4) automatically moves in the direction of the arrow (d) and rises, and the left and right side walls (2) and (2) move in the directions of the arrows (e) and (e) by the rising operation of the side wall (4). The left and right side walls (2) and (2) are moved up in the direction of the arrow (f) by the rising operation of the left and right side walls (2) and (2). 2) (2) (3) (4) is FIG.
The box form shown in Fig. 1 is adopted. As described above, the packaging paper box (A) having the above-described configuration is provided with the rear side wall (4) of the lid piece (8).
Four side walls (2) in front, back, left and right only by turning back to the outer side
(2), (3) and (4) are set up and can be easily assembled in a box shape. At the time of preparation for packing foods and the like into boxes, the desired number of boxes are thus placed on the four side walls (2).
(2) (3) (4) are stacked in a state where they have been started. Then, after the packing is completed, the left and right side walls (2)
After folding the folded pieces (5) and (5) of (2) and the folded piece (9) of the lid piece (8) into a predetermined state, insert the locking projection (26) into the locking notch (24). The box is closed with. In the case of a wrapping paper box not provided with the lid piece (8), the left and right side walls (2) overlapped on the inner surface of the bottom wall (1).
When (2) is bent from the folds (10) and (10) and started up, the front and rear side walls (3) and (4) are automatically started up by the rising operation of the left and right side walls (2) and (2). The front, rear, left and right side walls (2), (2), (3) and (4) take a box shape. Of course, this assembling operation is performed using the lid piece (8).
The present invention may be applied to the packaging paper box (A) having the above-described configuration.

In the prefabricated wrapping paper box of this embodiment, each of the side walls (2), (2), (3) and (4) has an upper side length larger than a lower side length. As described above, the four side walls (2), (2), (3), and (4) can be stacked while standing up.

The prefabricated packaging paper box according to the present invention is not limited to the above embodiment. For example,
The second connecting pieces (6) are set to be equal in height to the left and right side walls (2) and (2), but the first connecting pieces (7) and the left and right side walls (2) and (2) In order to increase the bonding area, the height of the second connecting pieces (6) may be made lower or the shape may be changed. Similarly, the shape of the first connecting pieces (7)... May be changed in order to increase the joint area with the left and right side walls (2) and (2). Further, the prefabricated packaging paper box (A) of the above embodiment is a tapered paper box, but in the case of the prefabricated packaging paper box according to the first aspect of the present invention,
Tapered paper box as well as each side wall (2) (2) (3)
(4) A cubic or rectangular parallelepiped paper box (not shown) in which the lower side length and the upper side length are equal.

[0024]

The packaging paper box (A) according to the first aspect of the present invention.
Can be stored in a flat folded state as a whole to minimize storage and transportation space before use, and can be easily assembled from the flat folded state. Since the piece (7) is set to be larger than the second connecting piece (6) and can be joined to the outer surface of the side wall (2), a synthetic resin film with high waterproof property, aluminum evaporation An inner surface of a first connecting piece (7) coated with a thin material such as a film or an aluminum foil;
The box can be bonded to the outer surface of the side wall (2), which is the exposed surface of the paper, and the box shape is not deteriorated even at a high temperature in a microwave oven by using an emulsion adhesive that is relatively inexpensive and has excellent heat resistance. Achieve a superposed state. Therefore, it is suitable as a packaging paper box for take-out food. Further, since the first connecting piece (7) is joined to the outer surface of the side wall (2),
It is difficult for the steam filled in the box to enter the joint due to the heating of the microwave oven, so that it is possible to realize a better polymerization and adhesion state, and furthermore, the first connection piece (7) and the second connection piece. When the thin material covering (6) is broken for some reason to generate paper dust, or when paper dust is generated from the end faces of the first connecting piece (7) and the second connecting piece (6). Even in this case, there is no possibility that these paper dusts are scattered inside the box, and the food can be hygienically protected. In addition, there is no possibility that the filled water vapor enters the box in the broken portion of the thin material and the end faces of the first connecting piece (7) and the second connecting piece (6), and the box shape is maintained for a long time. Can be. Also, the first
Despite being a box in which a pair of connecting pieces consisting of a connecting piece (7) and a second connecting piece (6) are joined to the outer surface of the side wall (2), the first connecting piece (7) and the second connecting piece are connected. It is not necessary to join the pieces (6), and the box can be easily manufactured by reducing the adhesive application step and the joining step.

Furthermore, the packaging paper box according to the invention of claim 1
(A) has a lid piece (8) connected to the upper edge of the side wall (4) on the side of the first connecting piece (7) through a fold (20), and a side end of the lid piece (8). Is provided with a second sloping fold (22) having the upper end of the first sloping fold (14) as a base end, and the lid piece (8) is bent toward the outer surface of the side wall (4) to form a second sloping fold. The second triangular portion (23) on the side of the eye (22) is superimposed on the outer surface of the first triangular portion (18), and the first triangular portion (18) and the second triangular portion (23) are connected to the side wall ( 4) The lid piece (8) is folded (20) when folded into a box shape from the flat folded state because it is folded inward and can be folded flat.
By simply turning the cover piece (8) toward the outer surface side of the side wall (4) on which the lid piece (8) is continuously provided, the side wall (4) on which the lid piece (8) is continuously provided is automatically raised and The right and left side walls (2) are raised by the rising operation of the side walls (4).
(2) is launched, and the left and right side walls (2) and (2)
By the rising operation, the side wall (3) opposed to the side wall (4) on which the lid piece (8) is continuously provided is raised, and four front, rear, left and right side walls (2), (2), (3) and (4) are formed. It takes the form of a box and can therefore be easily assembled.

The packaging paper box (A) according to the second aspect of the present invention.
Since the upper side length of each side wall (2) (2) (3) (4) is set to be larger than the lower side length, it can be a tapered paper box, and preparation before packing foods and the like into a box. In the stage, a plurality of boxes can be stacked with the four side walls (2), (2), (3), and (4) standing up, so that the space of the boxing work site can be effectively used and the boxing work can be efficiently performed. Can do well.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a prefabricated wrapping paper box according to the present invention.

FIG. 2 is an end view taken along line II-II in FIG.

FIG. 3 is a plan view of the box in an unfolded state.

FIG. 4 is a plan view of the box in the process of being manufactured.

FIG. 5 is a perspective view of the box during manufacture.

FIG. 6 is a plan view of the box during manufacture.

FIG. 7 is a perspective view of the box during manufacture.

[Explanation of symbols]

 A: Assembling type packaging paper box 1 ... Bottom wall 2 ... Left and right side wall 3 ... Front side wall 4 ... Rear side wall 6 ... Second connecting piece 7 ... First connecting piece 8 ... Lid piece 13, 14 ... First oblique fold 22 ... Second slanted fold 17 ... Slant fold for connecting piece 18 ... First triangular part 23 ... Second triangular part 10,11,12,15,16,19,20,21 ... Fold

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 5/00-5/76 B65D 81/34

Claims (2)

(57) [Claims] 1. A synthetic resin film having a waterproof property on one side.
And thin materials such as aluminum vapor-deposited film and aluminum foil
Square bottom with the thin material as the inner surface
The front, rear, left and right four side walls that are connected to the four circumferences of the wall through folds
Adjacent side walls are connected at both ends of each side wall and
The first connecting piece and the second connecting piece, which are continuously provided through the oblique fold for the connecting piece.
Connected via two connecting pieces, and on the side of the first connecting piece
A first sloping fold is provided at the end of the wall, starting from the lower end corner of the side wall.
The first triangular portion above the first oblique fold is
Bend it to the side so that it can be folded flat.
In the prefabricated packaging paper box, the first connecting piece is set to be larger than the second connecting piece.
And can be joined to the outer surface of the side wall on one side of the second connection.
On the other hand, a lid piece is connected to the upper edge of the side wall of the first connection piece via a fold.
And at the side end of the lid piece, above the first oblique fold.
A second beveled fold is provided with the end as a base end, and the lid piece is
The second triangle on the side of the second oblique fold is bent toward the outer surface of the wall.
The shape portion is superimposed on the outer surface of the first triangular portion, and these
Bend the first and second triangular portions toward the inner surface of the side wall
Foldable package that can be folded flat
Paper box. 2. Each of the side walls has an upper side length longer than a lower side length.
2. The prefabricated wrapping paper according to claim 1, wherein is set to a large value.
box.