JP3215015B2 - Packaging paper container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrapping paper container, and more particularly to a wrapping paper container used as a body or a lid in a so-called cover box.

[0002]

2. Description of the Related Art Conventionally, as a packaging paper container of this type, a rectangular bottom wall (1) as shown in FIGS.
The front and rear four side walls (52) (52)
(53) (53) are connected and each side wall (52) (52)
(53) Folded piece (54a) with a fold at the upper edge of (53)
(54b) and (56) are connected in series, while the pair of opposing side walls (52) and (52) are slanted at the lower end corners (60) (60) (6).
0) and (60), and the triangular portion (5
2a) (52a) (52a) (52a) The folded pieces (54a) (54a) (54a) (54a) are superimposed and adhered to the inner surfaces of the inner surfaces of the opposite side walls (52) (52). (Five
3) Joint piece (55) (55) (55) (5) connected to (53)
5) is the folded piece (54a) (54a) (54a) (54)
A packaging paper container (B) joined to a) is known.

Prior to assembling, such a paper container has a triangular portion (52a) (52a) (52a) (52a) as shown in FIG.
Is folded to the outer surface side of the side walls (52) and (52), and the ends of the side walls (53) and (53) adjacent thereto are superimposed into a flat folded state. In use, the flat folded state is changed to a desired box shape. It is easy to assemble, and since the folded pieces (54a), (54b), (56) ... are folded inward at the upper edge of the side wall, the end face of the upper edge of the side wall is not exposed, and the appearance appearance is good. While having the advantage of being present, there is some difficulty in joining adjacent side walls via the joining pieces (55), (55), (55), (55).

That is, the joining pieces (55) are formed such that the upper portions thereof are turned upside-down pieces (54a) (54a) (54a) (54a) and the side wall triangular portions (52a) (52a) (52a) (52a). The lower part is a side wall triangular part (52a) (52a)
(52a) Since the joining pieces (55) are to be directly joined to (52a), when the pressing pressure is set low when the joining pieces (55). Adhesion with the side wall triangular portions (52a) is insufficient, and the two are likely to separate during assembly. Conversely, the lower part of the joint piece (55a)
And the side wall triangular portion (52a). If the press pressure is increased so as to obtain the desired state of attachment, there is a problem that so-called press marks are left on the outer surface of the side wall.

In order to solve such difficulties, the joining piece (55) is made as small as possible in conformity with the shape of the folded piece (54a) so that the joining piece (55) becomes smaller. It is only necessary to polymerize only on the inner surface of the side wall triangular portion (52a)...
And the joint area between the side wall triangular portions (52a)... Via the folded pieces (54a). Conversely, the folded piece (54a) is made large enough to reach the vicinity of the inner corner of the inner surface of the side wall.
If the size of the joining piece (55) is correspondingly large, a sufficient joining strength proportional to the joining area can be obtained. However, if the size of the folded piece (54a) is large, the amount of paper material used increases. I will.

The present invention has been made in view of such circumstances, and does not leave undesired press marks after pressure bonding, can provide a good external appearance, and can reduce the amount of paper material used. It is an object of the present invention to provide a packaging paper device capable of obtaining as large a bonding strength as possible without increasing the bonding strength.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a square bottom wall having four front, rear, right and left side walls connected to each other via folds, and a fold at an upper edge of each side wall. On the other hand, a pair of opposing side walls is provided with a slanted fold from the lower end corner, and the folded piece is superimposed on the inner surface of the triangular portion above the slanted fold. In addition, in a packaging paper container in which a joining piece continuously provided on a side wall adjacent to the opposite side wall is joined to the opposite side wall, the first joining piece is continuously provided via a fold from both ends of the side wall. It consists of a joint piece and a second joint piece continuously provided via a fold from both ends of the folded piece on the side wall, and the first joint piece overlaps the folded piece attached to the inner surface of the triangular portion. Without being attached to the triangular portion without being close to the folded piece. While being set to be, the second joining piece to adopt a structure formed by polymerizing adhered to at least the folded piece.

[0008]

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

First, a packaging paper container (A) according to the present invention.
Will be described in detail based on the developed state shown in FIG.
Fold (11) (11) from a pair of opposing edges of square bottom wall (1)
The front and rear side walls (2) and (2) are connected to each other via a pair of opposite edges, and the left and right side walls (3) are formed through folds (12) and (12) from another pair of opposite edges.
(3) is provided continuously.

The front and rear side walls (2) and (2) each have an oblique fold (10) which rises obliquely at an angle of 45 degrees from a lower corner thereof.
(10) (10) (10) are provided, and the triangular portions (2a) (2a) (2a) (2a) above the diagonal fold are formed from the diagonal fold (10). It can be folded on the outer surface side of (2). In addition, the triangular portion (2
a).. and the front and rear side wall intermediate portions (2b) and (2b) are folded from the upper edge thereof through folds (13).
b) are connected in series. The folded piece (4a) of the triangular portion (2a) is formed in a trapezoidal shape that can be attached to the upper portion of the triangular portion (2a).

The left and right side walls (3) and (3) are first joined pieces (5) (5) (5) (5) (5) through folds (14) (14) (14) (14) from both end edges thereof. 5) are continuously provided, while folded pieces (6) and (6) are continuously provided on the upper edge via folds (15) and (15), and both ends of the folded pieces (6) and (6) are provided. The second joining pieces (7), (7), (7), (7) are continuously provided from the edges through folds (16), (16), (16), (16).

The first joining pieces (5) are attached to the ends of the triangular portions (2a) without overlapping with the trapezoidal folded pieces (4a) attached to the triangular portions (2a). It has a trapezoidal shape that can be attached. The second joining piece (7)
The trapezoidal folded piece (4a) ... and the first joining piece (5)
Are set to a size that can be polymerized and adhered to both.

The packaging paper container (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, as shown in FIG. 5, each folded piece (4a) of the front and rear side walls (2) and (2)
(4b) ... is folded back and attached to the inner surface of the front and rear side walls, and the folded pieces (6) (6) of the left and right side walls (3) (3)
To the inside of the left and right side walls. Next, as shown in FIG. 6, after the rear wall (2) is folded back to the inner surface of the bottom wall, the triangular portion (2a) is folded back from the oblique fold (10) to the outer surface of the rear wall (2). Then, the first joint piece (5) and the second joint piece (7) on the rear wall side are folded back on the inner surfaces of the left and right side walls. Similarly, after the front wall (2) is folded back to the inner surface of the bottom wall, the triangular portion (2a) is folded back from the oblique fold (10) to the outer surface of the front wall (2), while the front wall side Of the first joining piece (5) and the second joining piece (7) are folded back to the inner surfaces of the left and right side walls. Finally, the left and right side walls (3) and (3) are folded back toward the inner surface of the bottom wall, and the first joint piece (5) and the second joint piece (7) are each formed into a corresponding triangular portion (2a). 2 and affixed to the triangular portion folded piece (4a) of FIG.
The flat folded state is shown in FIG.

During transportation and storage until use,
It is handled in this flat folded state, and when packed in a box, the four side walls are erected and assembled in a box form.

[0015]

According to the packaging paper container (A) of the present invention, the folds (11), (11), (12) and (12) are formed on four sides of the rectangular bottom wall (1).
The front, rear, left and right four side walls (2), (2), (3), and (3) are connected to each other, and the upper edge of each side wall (2), (2), (3), (3) has a fold (13) (13) The folded pieces (4a), (4b), (6)... Are continuously provided via (15) and (15), while the pair of opposing side walls (2) and (2) are obliquely folded from the lower end corners. (Ten)
(10) are provided, and a triangular portion (2) above the oblique fold is provided.
a) The folded pieces (4a) are superposed and adhered to the inner surface, and the joining pieces (5) (5) ( 7) are joined to the opposing side walls (2) and (2), so that the triangular portions (4a) (4a) are folded back toward the outer side of the side wall and another pair of side walls (3) and (3) ) Can be folded into a flat folded state to minimize the storage and transportation space required for use, and can be easily assembled from the flat folded state. A first joining piece (5) continuously provided from both ends of the side wall via a fold (14), and a folded piece (6) of the side wall.
And a second joining piece (7) continuously provided from both ends through a fold (16), and the first joining piece (5) is a folded piece (4a) attached to the inner surface of the triangular portion. ) Is set so as to be adhered to the triangular portion (4a) without overlapping with the folded portion (4a), so that the triangular portion and the joining pieces (5) (7) ), The first joining piece (5) is interposed between the second joining piece (7) and the triangular portion (4a), so that undesired press marks do not appear on the surface of the paper container. Thus, a paper container having a good appearance can be obtained.

Further, the first joint piece (5) is directly adhered to the triangular portion (2a), while the second joint piece (7) is superimposed on the folded piece (4a) of the triangular portion (2a). As a result, the joint area between the first joint piece (5) and the second joint piece (7), the triangular portion (2a) and the folded piece (4a) is made as large as possible. A paper container having sufficient bonding strength can be manufactured. Moreover, as is clear from the unfolded state, the first joining piece (5) and the second joining piece (7) are provided continuously at both ends of the side walls (3) (3) and the folded pieces (6) (6). Since the maximum required length is sufficient for the equilateral length of the triangular portion (2a), there is an advantage that it can be rationally manufactured using the same amount of paper material as the conventional paper container. Have.

[Brief description of the drawings]

FIG. 1 is a perspective view of a packaging paper container according to the present invention.

FIG. 2 is a plan view of the folded state.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a plan view of the same developed state.

FIG. 5 is a plan view showing the same manufacturing process.

FIG. 6 is a plan view of the same manufacturing process.

FIG. 7 is a perspective view of a conventional packaging paper container.

FIG. 8 is a plan view of the developed state.

FIG. 9 is a perspective view of the folded state.

FIG. 10 is a sectional view taken along line XX of FIG. 9;

[Explanation of symbols]

 A: Packaging paper container 1 ... Bottom wall 2 ... Front wall, rear wall 2a ... Triangular portion 3 ... Left side wall, right side wall 4a, 4b, 6 ... Folding piece 5 ... First joining piece 7 ... Second joining piece 10 ... Slant folds 11, 12, 13, 14, 15, 16 ... folds

Claims (1)

(57) [Claims] 1. Four front, rear, left and right side walls are continuously provided on four sides of a rectangular bottom wall via folds, and a folded piece is continuously provided on the upper edge of each side wall via a fold. An oblique fold is provided on the opposing side wall from the lower end corner, and the folded piece is superposed and attached to the inner surface of the triangular portion above the oblique fold, and is connected to the side wall adjacent to the opposing side wall. The joining piece is joined to the opposing side wall, the joining piece is folded from both ends of the first joining piece continuously provided through the fold from both ends of the side wall and both ends of the folded piece of the side wall. A second joining piece continuously provided through an eye, wherein the first joining piece does not overlap with the folded piece adhered to the inner surface of the triangular portion, and the triangular shape is provided in a manner close to the folded piece. It is set to the size to be attached to the shape part, and the second joint piece is at least Packaging material unit, characterized in that formed by polymerizing attached to piece returns Ri.