JP3038733U - Thin packaging box - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a thin packaging box capable of efficiently packaging small products. SOLUTION: On the upper side of the narrow side wall flap,
A lid flap is extended through a folding curve, adjacent lid flaps are continuously provided through a folding curve, and a margin for extending from one edge of the lid flap to one edge of the four-sided sidewall flap is extended. The outer bottom flaps 21a and 21c and the inner bottom flap 21 are formed on the lower sides of the four-sided side wall flaps through folding lines.
b and 21d are extended and the protruding end 2 of the outer bottom flap
2 and 23 have two cutouts forming intersecting edges 25 and 26 intersecting at the bottom face surrounded by the side wall flaps.
7 and 28 are provided, and a folding curve is provided from the notched end spaced from the crossing edge of each notch to one side corner of each outer bottom flap, and the overlapping portion of each outer bottom flap and each inner bottom flap is bonded. Assemble with the prototype plate.

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin packaging box made of cardboard or other cardboard (hereinafter referred to as paper board).

[0002]

2. Description of the Related Art In a conventional thin packing box of this type, narrow side wall flaps 1a to 1d are continuously arranged via folding curves 2a to 2c as shown in FIG. The inner lid flaps 4a and 4c that face the outer lid flaps 4a and 4c that face each other are extended on the upper side of 1d through folding curves 3a to 3d, and the outer lid flap and the inner lid flap that are adjacent to each other are folded. The inner lid flaps 4b, 4d are provided with curved lines 6a, 6b of 45 degrees from the center of the upper side to both ends of the lower side, and one end of the lid flap is attached to one of the four side wall flaps. A margin 8 is extended through the folding curve 7 to the end edge of each of the four side wall flaps 1a to 1d, and the corresponding inner bottom flaps 10a and 10c correspond to the inner sides via the folding curves 9a to 9d. Bottom flaps 10b, 10d The outer bottom flap and the inner bottom flap, which are adjacent to each other, are connected to each other through folding lines 11a to 11c, and the inner bottom flaps 10b and 10d are bent at 45 degrees from the center of the lower side to both ends of the upper side. The master plate B provided with is punched out from a paper plate material by a punching die, and in this master plate B, the four side wall flaps 1a to 1d are bent along folding curves 2a to 2c, and the lid flaps 4a to 4d are bent along folding curves 5a to 5c. Folding, bottom flaps 10a to 10d are folded along folding curves 11a to 11c, and glue margin 8 is folded along folding curve 7 and bonded from the inside of the other end of the lid flap to the inside of the other end of the four-sided side wall flap. , There are some that are folded flat.

[0003]

When packing small products in the conventional thin packaging box described above, first, the inner bottom flaps 10b and 10d are folded along the folding curves 12a and 12b of 45 degrees and the folding curve 9b is formed. , 9d to fold the bottom surface surrounded by the four side wall flaps 1a to 1d to cover the bottom surface, and then bend the outer bottom flaps 10a and 10c to the position to cover the bottom surface via folding curves 9a and 9c. The edges of the outer bottom flaps 10a, 10c are butted against each other on the center line of the bottom surface, and the bottom portion is assembled by sticking an adhesive tape along the buttocks. Next, a small product is put in the space surrounded by the bottom and the four side wall flaps 1a to 1d. Next, while folding the inner lid flaps 4b and 4d along the 45-degree folding curves 6a and 6b, bend the inner lid flaps 4b and 4d through the folding curves 3b and 3d to a position to cover the upper surface surrounded by the four side wall flaps 1a to 1d. Then, the outer lid flaps 4a, 4c are bent through the folding curves 3a, 3c to a position to cover the upper surface, and the edges of the outer lid flaps 4a, 4c are butted against each other on the center line of the upper surface. Since small items are packed by sticking adhesive tapes along them, there is a drawback in that packing work takes time and the work efficiency decreases.

[0005]

[Problems to be Solved by the Invention] Therefore, the present invention is capable of assembling the bottom portion with a single touch in a thin packaging box that is manufactured from a paper board and is folded flat, and only the lid-closing work is required. It was created with the object of providing a thin packaging box that enables efficient packing work for small products by performing the same lid closing work.

[0006]

[Means for Solving the Problems] Therefore, according to the present invention, four narrow side wall flaps are continuously provided through a folding curve, and the outer sides of the four side wall flaps, which are opposed to each other through the folding curve, are provided. Inner lid flaps facing the lid flaps are extended, adjacent outer lid flaps and inner lid flaps are connected in series via folding curves, and an inclined folding curve is provided from the upper side to the lower edge of each inner lid flap. A seam allowance is extended through a folding curve from one edge of the flap to one edge of the four-sided side flap, and the lower side of the four-sided sidewall flap corresponds to the above-mentioned outer lid flaps. Outer bottom flaps that have protruding edges to each other are extended through folding curves, and the protruding ends of each outer bottom flap are located on the bottom surface surrounded by four side wall flaps. A notch is formed so as to form a crossing edge that intersects, and an inclined folding curve is provided from the crossing edge of each of these notches to the corner on one side of each outer bottom flap. At the part of the lower side of the side wall flap that corresponds to each of the above inner lid flaps, a prototype plate in which corresponding inner bottom flaps are extended through folding curves is punched out from the paper board material with a punching die, and this prototype plate is The four side wall flaps and each lid flap are bent into a box shape along a folding curve, and the above-mentioned margin is bonded from the other edge of the lid flap to the other edge of the four side wall flaps, and each inner bottom flap is Bend through the fold curve to the position where it covers the bottom surrounded by the four-sided side wall flaps, and fold each outer bottom flap to the position where it covers the above bottom through the fold curve. The above problems are solved by stacking the inner bottom flaps on the upper surface of each outer bottom flap, adhering the overlapping parts of each outer bottom flap and each inner bottom flap, and assembling the bottoms. It is something to do.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The thin packaging box of the present invention is a narrow four-sided side wall flap and a lid flap that extends through a folding curve on the upper side of the four-sided side wall flap. The lid flaps, which are connected in series, extend from one edge of the lid flap to one edge of the four-sided side wall flap through a folding curve, and extend along the lower side of the four-sided sidewall flap through a folding curve. A prototype plate consisting of a bottom flap is punched out from a paper board material with a punching die and assembled with this prototype plate.

[0008] Narrow four-sided side wall flaps are continuously connected through a folding curve, and an inner lid flap that opposes an outer lid flap that faces each other through the folding curve extends on the upper side of the four-side wall flap. , The adjacent outer lid flap and inner lid flap are connected to each other via a folding curve, and each inner lid flap is provided with a slanting folding curve from the upper side to the lower side both ends, and one edge of the lid flap is To the one edge of the four-sided side wall flap, a seam allowance is extended through a folding curve.

Outer bottom flaps corresponding to the outer lid flaps of the lower sides of the four-sided side wall flaps, which correspond to each other, have outer bottom flaps each having a protruding end portion protruding from each other through a folding curve. At the protruding end of each outer bottom flap, a notch is formed so as to form a crossing edge that intersects with the bottom face surrounded by the four-sided side wall flaps, and there is a gap from the crossing edge of each notch. An inclined fold line is provided from the notched edge to the corner on one side of the outer bottom flap. At the part corresponding to each inner lid flap on the lower side of the four-sided side wall flap, a prototype plate, which has an inner bottom flap extending through a folding curve, is punched out from a paper board.

In the above prototype plate, the four side wall flaps and each lid flap are bent into a box shape through a folding curve, and the seam allowance is also bent through the folding curve so that the other side edge of the four side wall flaps is bent from the other edge of the lid flap. Adhesive is attached to the other edge. Then, each inner bottom flap is bent to a position that covers the bottom face surrounded by the four-sided side wall flaps through a folding curve between the inner side bottom flaps. Next, fold each outer bottom flap through the fold curve between it and the side wall flap to a position where it covers the bottom surface, intersect each intersecting edge at the bottom surface, and place each inner bottom on the top surface of each outer bottom flap. Assemble the thin packaging box by stacking flaps and adhering the overlapping parts of each outer bottom flap and each inner bottom flap with adhesive.

In the thin packaging box having the above-mentioned configuration, when one of the outer bottom flaps is pushed up into the space surrounded by the four side wall flaps through the folding curve between the outer side flaps and the side wall flaps, the crossed edges are crossed. Slide on each other in a direction away from the intersecting position, and each outer bottom flap folds upward in the space through a fold curve provided on them and a fold curve between the four side wall flaps. When the outer lid flap and the side wall flap that face each other are pushed toward each other, the thin packaging box is folded flat as a whole.

When both ends of the thin packaging box thus folded are pushed toward each other, the outer lid flaps and the side wall flaps are pushed open to the opposite positions, and the inner lid flaps and the side lid flaps are opened. The side wall flaps are also pushed open to opposite positions. At the same time, the outer bottom flaps and the inner bottom flaps are deployed in a flat plate shape, and finally, the intersecting edges pass each other and engage with each other at the bottom surface, so that the sturdy bottom portion of the thin packaging box is secured. It can be assembled with one touch.

When packaging the small products, the small products are put in the space surrounded by the bottom portion and the four-sided side wall flaps assembled as described above. Next, when the corresponding inner lid flaps are folded along the inclined fold lines provided on them, the fold lines between the corresponding inner lid flaps and the side wall flaps are folded to a position where they are placed on the upper surface surrounded by the four side wall flaps. , The opposing outer lid flaps are also automatically folded via the fold curve between the side wall flaps to the position where they are placed on the upper surface, and the edges of each outer lid flap are abutted on the upper surface. Complete the packaging by sticking the adhesive tape along the seams.

[0014]

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 6. First, a prototype plate A having the following flaps is punched out from a paper board material with a punching die. That is, the narrow four-sided side wall flaps 13a to 13d are continuously provided via the folding curves 14a to 14c, and the outer lid flaps 16a facing each other via the folding lines 15a and 15c are provided on the upper sides of the four side wall flaps 13a to 13d. , 16c are extended, and inner lid flaps 16b, 16d which are opposed to each other via folding lines 15b, 15d are extended, and adjacent outer lid flaps 16a and inner lid flaps 16b, inner lid flaps 16b and outer lids are provided. The flap 16c, the outer lid flap 16c, and the inner lid flap 16d are connected to each other via folding lines 17a to 17c, and the inner lid flaps 16b and 16d have a 45-degree folding line from the center of the upper side to both ends of the lower side. 18a and 18b are provided, and either edge of the lid flaps 16a and 16d, for example, the edge of the lid flap 16a. Over the edge of the Luo square side wall flaps 13a through the folding curve 19 to extend the overlap width 20.

Outer bottom flaps corresponding to the outer lid flaps 16a and 16c of the lower sides of the four-sided side wall flaps 13a to 13d are outer bottom flaps corresponding to each other, and have protruding end portions 22 and 23 protruding toward each other. The bottom flaps 21a and 21c are extended via folding lines 24a and 24c. Notches are formed in the protruding ends 22 and 23 of the outer bottom flaps 21a and 21c so as to form rounded intersecting edges 25 and 26 that intersect at the center O of the bottom surface surrounded by the four side wall flaps 13a to 13d. The cutouts 27, 28 are provided, and the cutouts 29, 30 spaced from the intersecting edges 25, 26 of the cutouts 27, 28 to the one-side corners 31, 32 of the outer bottom flaps 21a, 21c are 45 degrees. Bending curves 33a and 33b are provided. Inner bottom flaps 21b, 21d corresponding to the inner lid flaps 16b, 16d on the lower sides of the four side wall flaps 13a-13d are extended through folding lines 24b, 24d. The flaps 21b, 21d are provided with inclined edges 34, 35 having an angle of 45 degrees with the folding curves 24b, 24d.

In the prototype plate A, the four side wall flaps 13a to 13d and the lid flaps 16a to 16d are bent into a box shape through the folding curves 14a to 14c and the folding curves 17a to 17c, and the seam allowance 20 is folded into a folding curve 19. Then, the inner lid flap 16d is bonded with an adhesive from the inner edge of the inner lid flap 16d to the inner edge of the sidewall flap 13d. Next, the inner bottom flaps 21b and 21d are bent through folding lines 24b and 24d so as to cover the bottom surface surrounded by the four side wall flaps 13a to 13d. Next, the outer bottom flaps 21a, 21c are bent through the folding lines 24a, 24c to a position where they cover the bottom surface, and the intersecting edges 25, 26 are intersected at the central portion O of the bottom surface. A state in which inner bottom flaps 21b and 21d are superposed on the upper surface of 21c, and 45-degree sloping edges 34 and 35 of the inner bottom flaps 21b and 21d are aligned with the 45-degree fold lines 33a and 33b of the outer bottom flaps 21a and 21c. Then, of the outer bottom flaps 21a, 21c, the portions 38, 39 surrounded by the 45-degree folding curves 33a, 33b and their edges 36, 37 are bonded to the inner bottom flaps 21b, 21d with an adhesive. Assemble the thin packaging box 40 as shown in FIG.

In the thin packaging box 40 having the above configuration, either one of the outer bottom flaps 21a and 21c is pushed up into the space surrounded by the four side wall flaps 13a to 13d via the folding curve 24a or the folding curve 24c. And the cross edges 25 and 26 slide toward each other and move in a direction away from the cross position, and the outer bottom flaps 21a and 21c move through the fold curves 33a and 33b and the fold curves 24a and 24c of 45 degrees, respectively. Bend upwards. At the same time, the side wall flap 13a and the outer lid flap 16a, and the side wall flap 13b and the inner lid flap 16b move toward one side while bending in an acute angle at the folding curves 14a and 17a as shown in FIG. As shown in FIG. 4, the flap 13c and the outer lid flap 16c, and the side wall flap 13d and the inner lid flap 16d move toward the other while bending in an acute angle at a folding curve 14c and a folding curve 17c. Then, when the outer lid flaps 16a, 16c facing each other and the side wall flaps 13a, 13c facing each other are pushed toward each other, the thin packaging box 40 is folded flat as a whole as shown in FIG.

When the both ends 41, 42 of the thin packaging box 40 folded in this way are pushed toward each other, the outer lid flaps 16a, 16c and the side wall flaps 13a, 13c are pushed to opposite positions. While being opened, the inner lid flaps 16b and 16d and the side wall flaps 13b and 13d are pushed and opened to the opposite positions. At the same time, the outer bottom flaps 21a and 21c and the inner bottom flaps 21b and 21d are developed into a flat plate shape, and finally the crossed edges 25 and 26 pass each other to engage with each other at the center O of the bottom surface. The sturdy bottom 43 of the thin packaging box 40 is assembled with one touch as shown in FIGS. 2 and 3.

When packaging the small products, the small products are put in the space surrounded by the bottom portion 43 and the four side wall flaps 13a to 13d assembled as described above. Next, the inner lid flaps 16b and 16d facing each other are folded along the folding lines 18a and 18b at 45 degrees, and are folded to the position covered by the four side wall flaps 13a to 13d through the folding lines 15b and 15d. Then, the opposing outer lid flaps 16a, 16c are also automatically folded via the folding lines 15a, 15c to the position where they are placed on the upper surface, and the edges 44, 45 of the outer lid flaps 16a, 16c are shown in FIG. Since they are abutted on the center line of the upper surface as described above, the packing is completed by adhering the adhesive tape along the abutments.

In the present invention, the rounded intersecting edges 25 and 26 may be changed to tapered intersecting edges. Further, the outer bottom flaps facing each other and / or the outer lid flaps facing each other may be configured to abut each other on a line deviated from the center line of the lower surface of the box 40 or the center line of the upper surface of the box 40. In this case, the intersection position at the bottom of each intersection edge is also deviated from the center O by an amount corresponding to the above deviation.

[0021]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, it has the following effects. When packing small products such as catalogs, pamphlets, notebooks, various documents, correspondence and answer sheets for distance learning, small items for mail order, and various other small items, it is possible to assemble the bottom of the thin packaging box with one touch. Since it is possible to perform the same work as the lid closing work of the conventional thin packaging box only for the lid closing work, the packing work efficiency can be further improved. Since the four lid flaps are connected in a curved line without being separated, the strength of the lid flaps can be maintained during packaging. When not in use, it can be folded flat like conventional products, eliminating bulkiness and convenient for mass storage and transportation. Since the outer shape of the box can be thinly and compactly assembled, it is convenient for packaging small products, and for example, it is possible to provide a packaging box having a size that can be mailed to a post box as mail. When unpacking, it is only necessary to peel off the adhesive tape attached to the butt of the lid flap, so the work efficiency of unpacking can be further improved.

[Brief description of the drawings]

FIG. 1 is a plan view showing a developed state of an embodiment of the present invention.

FIG. 2 is a plan view showing a state where the thin packaging box is assembled and the lid is opened.

FIG. 3 is a plan view of the bottom side in the same state.

FIG. 4 is a perspective view showing a state in which a thin packaging box is being folded flat while the crossing edges of the outer bottom flaps are disengaged.

FIG. 5 is a perspective view of a flatly folded state.

FIG. 6 is a perspective view showing a state in which small products are packed.

FIG. 7 is a plan view showing a developed state of a conventional product.

[Explanation of symbols]

 13a to 13d Side wall flaps 14a to 14c Folding curve 15a to 15d Folding curve 16a to 16d Lid flap 17a to 17c Folding curve 18a, 18b Folding curve of 45 degrees 20 Lapping margin 21a to 21d Bottom flap 22, 23 Overhanging end 24a to 24d Folding curve 25, 26 Crossing edge 33a, 33b 45-degree folding curve 34, 35 45-degree sloping edge 40 Thin packaging box 43 Bottom

Claims (1)

[Utility model registration claims] 1. A narrow four-sided side wall flap is continuously connected through a folding curve, and an inner lid flap opposite to an outer side lid flap facing each other through the folding line is extended on an upper side of the four-sided side wall flap. However, adjacent outer lid flaps and inner lid flaps are connected to each other via folding curves, and inclined folding curves are provided from the upper side to the lower edge of each inner lid flap, and one edge of the lid flaps to one of the four side wall flaps. Of the four side wall flaps corresponding to the above-mentioned outer lid flaps, the outer bottom flaps corresponding to each other, and the protruding end portions protruding from each other. An outer bottom flap having a fold curve, and the protruding end of each outer bottom flap is notched so as to form a crossing edge that intersects at the bottom face surrounded by the four-sided side wall flaps. A notch is provided, and an inclined folding curve is provided from the notch end spaced from the crossing edge of each notch to one corner of each outer bottom flap. In the corresponding part, a prototype plate formed by extending the corresponding inner bottom flaps via folding curves is punched out from the paper board material with a punching die, and in this prototype plate, the four side wall flaps and each lid flap are folded into curved lines. While bending it into a box shape through the above, the above-mentioned margin is adhered from the other edge of the lid flap to the other edge of the four-sided side flap, and each inner bottom flap is surrounded by four-sided side flaps through folding curves. Bend it to the position
Bend each outer bottom flap to a position that covers the bottom surface through a folding curve, intersect the intersecting edges at the center of the bottom surface, overlap each inner bottom flap on the upper surface of each outer bottom flap, A thin packaging box in which the bottom flap and the overlapping parts of the inner bottom flaps are bonded together to assemble the bottom.