JP2000168771A - Packaging box formed of cardboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cardboard packaging box in which an upper surface of a covering lid is swollen in a semi-cylindrical shape, the grade is high, and the structure is sturdy. SOLUTION: In a cardboard packaging box to open/close a box body opened in an open surface by a covering lid 2, the covering lid 2 is provided with a long main cardboard part 8 of specified width, outer and inner front walls 10a, 10b in the center in the longitudinal direction of the main cardboard part 8, outer and inner lid piece part 11a, 11b on upper and lower end sides thereof, and outer and inner rear side walls 13a, 13b on upper and lower end sides thereof are successively and continuously provided, an outer wall 16 and a connection strip piece 18 are successively and continuously provided on both end sides of the outer front wall 10a, both outer walls 16 are provided with swollen part 19 projecting in an arc-like manner on its upper end side, and the outer and inner front walls 10a, 10b, the outer and inner lid piece parts 11a, 11b, the outer and inner rear walls 13a, 13b, the outer walls 16 and the inner walls 21 are folded to assemble the packaging box.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-quality paperboard packaging box in which an upper surface of a cover, which is openably and closably attached to an upper surface opening of a box body, protrudes in a so-called kamaboko shape.

[0002]

2. Description of the Related Art Conventionally, there is a packaging box made of paperboard, in which an upper surface of a cover, which is openably and closably attached to an upper surface opening of a box body, is formed by swelling in a so-called semi-cylindrical shape. For example, as shown in FIG. 8, this paperboard packaging box is formed by bending a single thin paperboard to form front, rear, left and right four-sided side walls 102a to 102a.
The box body 100 is formed by the 2d and the bottom wall 101, and bulges 103, 103 protruding in an arc shape are provided on the upper ends of the left and right walls 102b, 102d. Then, a cover 105 is provided on the upper end side of the rear side wall 102c via a horizontal folding line 104. The cover lid 105 is formed to have a length along an arc-shaped curve of the upper end edges of the left and right walls 102b and 102d, and has an upper surface curved in an arc shape, that is, a semi-cylindrical shape, and has left and right side edges. The upper opening of the box body 100 is covered by being arranged along the upper edges of the left and right walls 102b and 102d.

[0003]

However, the entire packaging box made of paperboard is merely formed by bending a single thin paperboard, and the cover 105 is covered with the box body 100. In the state of wearing, the left and right side walls 102
b, 102d Only the left and right side edges of the cover 105 are supported by the upper edges thereof, and are not fixed by gluing or the like.
Or, the left and right walls 102b and 102d were easily deformed. Therefore, when deformed, there is a risk that the stored articles may be damaged. Therefore, the present invention has been made to solve the above-mentioned problem, and the upper surface of the cover is bulged in an arc shape, that is, in a semi-cylindrical shape, and does not easily deform even when subjected to external pressure or the like. An object of the present invention is to provide a paperboard packaging box which maintains strength and is easily formed.

[0004]

In order to achieve the above object, a paperboard packaging box according to the present invention comprises a box body having an open upper surface and a cover lid which is openably and closably attached to the opening.
In a paperboard packaging box in which the upper surface of the cover is bulged in an arcuate shape, the cover has a vertically long main paperboard portion having a constant width, and the main paperboard portion has a longitudinal center. From the inner and outer front side walls, the inner and outer lid pieces and the inner and outer rear side walls are sequentially arranged in order from top to bottom symmetrically through the horizontal folding line, respectively, and further through the vertical folding lines at the left and right end sides of the outer front side wall respectively An outer wall and a connecting strip are successively provided in order, and each outer wall has a bulged portion protruding in an arc shape at an upper end side, and an inner wall formed symmetrically with the outer wall via a horizontal folding line at a lower end side. And glue margins are extended from the lower edge of each inner wall.

[0005] The cover lid is formed by first bending the pair of left and right outer walls and connecting strips inward along a vertical fold line to connect the connecting strips to form a square circling portion. Folded along the horizontal fold line and bonded to the inside of each outer wall, the inner front side wall, the inner lid piece and the inner rear side wall are sunk into the rectangular circuit from below, and the inner rear side wall is the inner surface of the connecting strip. The outer lid piece is superimposed on the upper surface of the inner lid piece, and the left and right edges are laminated to the respective glue margins, and the outer rear side wall is laminated to the outer surface of the connecting strip. Form. In addition, a glue margin wall is extended at the upper end side of the outer rear side wall via a horizontal folding line, and the glue margin wall is bonded to the inner side surface of the inner rear side wall so as to be formed separately from the box body. Alternatively, the glue margin wall may be attached to the outside of one side wall of the box body, and the cover may be pivotally mounted on one side of the box body so as to be freely opened and closed. In this way, by folding and bonding one sheet of paperboard, the cover whose upper surface bulges in an arcuate shape, that is, a semi-cylindrical shape, has a double structure as a whole, and is robust, strong, and can be easily formed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a paperboard packaging box according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a packaging box made of paperboard, FIG. 2 is a perspective view of the same with the cover lid opened, FIG. 3 is an exploded perspective view of the same, and FIG. 4 is a developed plan view of the cover lid. A packaging box made of paperboard according to the present invention comprises a box-shaped main body 1 having an opening at an upper surface, and a cover 2 which is openably and closably attached to the opening, and the upper surface of the cover 2 has an arcuate surface. It is formed so as to swell.

That is, as shown in FIG. 3, the box main body 1 is formed by bending the four side walls 3a to 3d into a square shape, and
And a four-sided side wall 5a inside the outer box 3 having an opening 4 on the upper surface.
2 to 5d are formed by bending an inner frame 5 formed by bending the inner frame 5 into a square shape. The four side walls 5a to 5d of the inner frame 5 are higher than the four side walls 3a to 3d of the outer box 3, and FIG. As shown in the drawing, a step 6 is formed on the outer peripheral edge of the upper end to fit the outer peripheral edge of the lower end of the lid 2. Reference numeral 7 denotes a bottom plate that is inserted into the lower end surface of the inside of the middle frame 5.

The cover 2 is formed by punching a paperboard, and a desired pattern / pattern a is printed on a surface corresponding to the outer surface of the assembled cover 2. The cover 2 has a vertically elongated main paperboard portion 8 having a constant width as shown in FIG. The outer front side wall 10a and the inner front side wall 10b are provided therebetween, and the outer lid piece 11a is provided at the upper end side of the outer front side wall 10a via the horizontal fold line 9; An outer rear side wall 13 is provided on the upper end side via a horizontal folding line 12.
a is provided. Further, a glue margin wall 14 is provided on the upper end side of the outer rear side wall 13a via the horizontal folding line 12. Further, the inner lid piece portion 11 is provided on the lower end side of the inner front side wall 10b via a horizontal fold line 9.
b is provided, and the inner rear side wall 13b is connected to the lower end side of the inner lid piece 11b via the horizontal folding line 12. The length of the outer / inner lid pieces 11a, 11b in the longitudinal direction is equal to the upper edge of the bulging portions 19, 19 protruding in an arc shape at the upper ends of the left and right outer walls 16, 16 of the outer front side wall 10a described later. Is set to match the length along.

Outer walls 16 and 16 are provided on both left and right sides of the outer front side wall 10a via vertical fold lines 15 and 15, and connecting bands are provided on the outer ends of these outer walls 16 and 16 via vertical fold lines 17 and 17. Pieces 18, 18 are provided in series. Each of the outer walls 16, 16 has a bulged portion 1 protruding in an arc shape toward the upper end.
Inner side walls 21 and 21 having substantially symmetrical shapes with the outer side walls 16 and 16 are provided at the lower end edges of the outer side walls 16 and 16 through horizontal folding lines 20 and 20, respectively. A plurality of glue allowance pieces 23 extending in the form of teeth are extended from lower end edges of the inner side walls 21 and 21 via fold lines 22 and 22. Cuts 24, 24 that can be engaged with each other are formed symmetrically near the ends of the connecting strips 18, 18.

Next, the order of assembling the cover 2 thus formed will be described. As shown in FIG. 5 (a), first, the vertical fold lines 15, 15 and 17, 17 on both sides are bent inward at right angles to each other, and the cuts 24, 24 are engaged with each other to form the outer front side wall 10a, both outer side walls 16, 16 and the left and right connecting strips 18, 18 form a square circling portion F. Next, FIG.
As shown in (b), both inner side walls 21 and 21 are
20, bend inward, polymerize on the inner surfaces of both outer walls 16, 16, and bond them with an adhesive.
Fold horizontally at 2,22. Next, as shown in FIG. 5 (c), the inner front side wall 10b, the inner lid piece 11b, and the inner rear side wall 13b are bent along the horizontal fold lines 9, 9, and 12 while being sunk from below the rectangular circling portion F, thereby forming the inner rear side. By bonding the side wall 13b to the inner surfaces of the two connecting strips 18, 18 with an adhesive, the inner lid piece 11b is curved so as to match the arc-shaped projecting upper edges of the outer and inner side walls 16, 21. I do. Finally, the outer lid piece 11a is superimposed on the upper surface of the inner lid piece 11b, the left and right edges thereof are bonded to the adhesive margin pieces 23, 23 with an adhesive, and the outer rear side wall 13a is connected to both connecting strips. The outer cover 18 is bonded to the outer surface of the cover 18 with an adhesive to cover the cover 2 as shown in FIG.
Is assembled.

The lid 2 assembled in this manner is attached to the box main body 1 as shown in FIG. 6 and an adhesive margin wall 14 is attached to the rear side wall 3c of the outer box 3 of the box main body 1 by an adhesive. To complete the packaging box A made of paperboard. In addition, the glue margin wall 1
Alternatively, the cover 2 and the box body 1 may be formed separately from each other by bending the cover 4 inward and bonding it to the outer surface of the inner rear side wall 13b with an adhesive.

In the packaging box A made of paperboard according to the present invention, the upper surface of the cover 2 has a high-grade shape that bulges in an arcuate shape, that is, a semi-cylindrical shape, and the cover 2 is entirely made of one piece of paperboard. It has a folded double structure, and since the left and right edges of the outer lid piece 11a are bonded to the adhesive margin piece 23 with an adhesive as shown in FIG. 7, it is robust and strong. In addition, as shown in FIG. 1, a desired pattern / design a is exposed on the outer surface of the cover 2 and the box main body 1. For example, if a pattern / design such as a treasure box is exposed, various kinds of patterns / designs can be obtained. It is suitable for use as a package for candy or chocolate at theme parks.

[0013]

As described above, the packaging box made of paperboard according to the present invention is a cover with a high quality formed by swelling the upper surface into a semi-cylindrical shape, and in particular, the cover is made of one piece of paperboard. To form a double-layered structure, in which the left and right side edges of the outer lid piece and the upper edge of the inner wall are glued together with glue through glued pieces, making it robust and strong. Is strong. Therefore, even when the packaging boxes are stacked in a state in which the articles are stored, the boxes are not deformed, and the stored articles can be protected without being damaged. In addition, since it can be formed only by folding and bonding one sheet of paperboard, the forming is easy and it can be provided at low cost. Furthermore, since it has a robust configuration, it can be usefully used as an accessory case later.

[Brief description of the drawings]

FIG. 1 is a perspective view of a paperboard packaging box according to the present invention.

FIG. 2 is a perspective view showing a state where the cover is opened.

FIG. 3 is an exploded perspective view of the same.

FIG. 4 is a developed plan view of the cover.

FIG. 5 is a perspective view showing an assembling sequence of the cover.

FIG. 6 is a sectional view taken along line XX of FIG. 1;

FIG. 7 is a sectional view taken along line YY of FIG. 1;

FIG. 8 is a perspective view of a conventional paperboard packaging box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box main body 2 Cover lid 4 Opening 8 Main paperboard part 9, 12 Horizontal fold line 10a, 10b Outer / inner front side wall 11a, 11b Outer / inner lid piece part 13a, 13b Outer / inner rear side wall 15, 17 Vertical fold line 16 Outer side wall REFERENCE SIGNS LIST 18 connecting strip 19 bulging portion 20 horizontal fold line 21 inner wall 23 glue margin F square surrounding portion A paperboard packaging box

Claims (1)

[Claims] 1. A paperboard packaging box comprising a box main body having an open upper surface and a cover lid openably and closably attached to the opening, wherein the upper surface of the cover lid bulges in an arc shape. ,
The cover has a vertically elongated main paperboard portion having a constant width, and the main paperboard portion has inner and outer front side walls, inner and outer lid pieces, which are vertically symmetrical from the center in the longitudinal direction via horizontal folding lines, respectively. Inner and outer rear side walls are sequentially connected, and furthermore, outer side walls and connecting strips are sequentially connected to the left and right end sides of the outer front side wall respectively through vertical folding lines, and each outer wall is formed in an arc shape on the upper end side. Along with a protruding bulging portion, an inner wall symmetrical to the outer wall is continuously provided on the lower end side through a horizontal folding line, and a glue margin piece is extended at a lower end edge of each inner wall, The left and right pair of outer walls and connecting strips are sequentially bent inward at vertical folding lines to connect the connecting strips to form a square circling portion, and the left and right inner walls are bent at horizontal folding lines to the inside of each outer wall. Laminated, the inner front side wall,
The inner lid piece and the inner rear wall are sunk into the rectangular circuit from below, the inner rear wall is attached to the inner surface of the connecting strip, and the outer lid piece is overlaid on the upper surface of the inner lid piece. A packaging box made of paperboard, wherein the left and right side edges are bonded to each of the glue margin pieces and the outer rear side wall is bonded to the outer side surface of the connecting strip.