JPH11245935A - A-1 type carton - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an A-1 type carton whose compression strength is improved without increasing the strength of a carton material itself. SOLUTION: An A-1 type carton is provided with inner flaps 5, 7, 14, 16 of a lid part and a bottom part of W/2 in longitudinal length and W in transverse length, and outer flaps 6, 15 of a lid part and a bottom part of W/2 in longitudinal length. Reinforcement members 14, 16 are formed between the outer flap 15 of the lid part and the inner flap 6 of the bottom part, and the carton is provided with the reinforcement member 14, 16 which are formed into U-shaped section by folding the inner flaps of the lid part inward of the carton. Thus, the compression strength of the carton can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an A-1 type carton, and more particularly to an A-1 type carton in which the compressive strength of the carton is improved without increasing the strength of the material itself of the carton.

[0002]

2. Description of the Related Art FIGS. 5 to 8 are views showing a method of manufacturing a conventional A-1 type carton. Conventional A-1 type cartons are made with equipment called a flexographic printing press (printer slotter).

FIG. 5A is a plan view showing a corrugated cardboard having ruled lines formed by a flexographic printing machine, and FIG. 5B is a sectional view taken along line 4b-4b shown in FIG. 5A. is there. FIG. 6A is a side view showing the frames A and B of the corrugator, and FIG. 6B is a front view of the frames A and B shown in FIG. 6A.

In the last step of the corrugator, a rectangular corrugated cardboard is passed between the rotating disk-shaped pieces A and B (shown in FIG. 6), so as to extend in the longitudinal direction of the corrugated cardboard 100 as shown in FIG. Two ruled lines (recess) 103
a and 103b are formed. Two ruled lines 103a, 103
b, the corrugated cardboard 100 is divided into three regions.
The central region 100a formed between the ruled lines 103a and 103b of FIG.
Upper and lower regions 1 formed above 3a and below ruled line 103b
00b constitutes the part which becomes the flap of the carton.

Further, as shown in FIG.
The groove 120 is cut at the same time when the surface is printed. As a result, in the central area 100a of the corrugated cardboard 100, the glued portion 109, the left side wall portion 110, and the front side wall portion 11 are sequentially arranged from the left side.
1. A right side wall portion 112 and a rear side wall portion 113 are formed. In a lower region 100b, a left bottom portion (inner flap) 105, a front bottom portion (outer flap) 106, a right bottom portion (inner flap) 107, and a rear portion are arranged in order from the left. Side bottom (outer flap) 108
Are formed in the upper region 100b in order from the left side, a left lid (inner flap) 114, a front lid (outer flap) 1
15. A right lid (inner flap) 116 and a rear lid (outer flap) 117 are formed.

[0006] Inner flaps 105, 107, 114, 11
6 is W × W / 2, and the outer flaps 106 and 10
The dimensions of 8, 115 and 117 are L × W / 2. The dimensions of the left side wall 110 and the right side wall 112 are W × H, and the dimensions of the front side wall 111 and the rear side wall 113 are L × H.

FIG. 8 shows A-
It is a perspective view which shows one type of carton. FIG. 9 shows FIG.
It is sectional drawing of the A-1 type carton shown in FIG. The cardboard 100 of FIG. 7 is bent at the ruled line, and the glue 109 is attached to the left side wall 113, and the inner flaps 105 and 10 at the bottom.
After closing the outer flaps 106 and 108 on the bottom, the product 121 placed in a cushion (not shown) is stored, the inner flaps 114 and 116 on the lid are closed, and the outer flaps 115 and 117 on the lid are closed. When closed, the A-1 type carton shown in FIGS. 8 and 9 is completed.

[0008]

By the way, the above-mentioned conventional A-1 type carton can simultaneously perform printing on the surface of the carton, grooving and crease as shown in FIG. 7, and does not require a punching die. Since one system can be used, a carton can be produced at low cost.

However, only the dimensions of W, L, and H shown in FIG. 7 can be changed, and only a carton having a single structure as shown in FIGS. 8 and 9 can be produced. Can not do it. Therefore, A-1
In the case of the carton of the type, the strength of the carton cannot be increased by changing the structure of the carton. The only way to increase the strength of the carton is to increase the strength of the carton itself. Therefore, the strength of the carton increases
After all, the cost of the material is increased.

The present invention has been made in consideration of the above circumstances, and has as its object to improve the compressive strength of a carton without increasing the strength of the material itself of the carton.
-1 type carton.

[0011]

In order to solve the above-mentioned problems, an A-1 type carton according to the present invention has a lid having a length of W / 2 and a width of W having a lid and a bottom having a width of W. An A-1 type carton comprising: an inner flap; a lid having a vertical length of W / 2; and an outer flap at the bottom.
A reinforcing member formed between the outer flap of the lid portion and the inner flap of the bottom portion, the reinforcing member having a U-shaped cross section formed by bending the inner flap of the lid portion inside the carton. A-1 type carton characterized by the above-mentioned.

The A-1 type carton can originally be made at low cost, but can only be made with a single structure carton. However, in the A-1 type carton, the inner flap of the lid is bent inside the carton to form a reinforcing member having a U-shaped cross section between the outer flap of the lid and the inner flap of the bottom. Thereby, the compressive strength of the carton can be improved without increasing the strength of the material itself of the carton.

Further, the A-1 type carton according to the present invention has an inner flap of a lid portion and a bottom portion having a vertical length of W / 2 and a horizontal length of W, and a vertical length of W / 2. A type A-1 carton comprising: a lid part and a bottom outer flap, wherein the reinforcing member is formed between the outer flap of the lid part and the inner flap of the bottom part. Fold the inner flap inside the carton and reverse the cross section L
It has a reinforcing member formed in a character shape.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 are views showing a method of manufacturing an A-1 type carton according to an embodiment of the present invention. This A-1 type carton can also be made with a flexographic printing press in the same manner as a conventional A-1 type carton.

FIG. 1 is a plan view showing a cardboard on which ruled lines are formed by a flexographic printing machine. In the last step of the corrugator, a rectangular corrugated cardboard is passed between the rotating disc-shaped pieces A and B (shown in FIG. 6), so that two corrugated boards A and B are arranged in the longitudinal direction of the corrugated cardboard 1 as shown in FIG. Ruled lines (recesses) 3a and 3b are formed. At the same time, the upper ruled line 3
Two ruled lines 4a and 4b are formed on a. Since the number of corrugator pieces can be increased and set to some extent, it is possible to form additional ruled lines 4 a and 4 b on the cardboard 1. In this case, two sets of corrugator pieces may be added.

The central region 1a formed between the ruled lines 3a and 3b constitutes the body of the carton, and the upper region 1b formed on the ruled line 3a constitutes a portion which becomes a flap of the lid of the carton. The lower region 1c formed below the ruled line 3b constitutes a portion to be a flap at the bottom of the carton.

Further, as shown in FIG. 2, the groove 20 is cut at the same time when the surface of the cardboard 1 is printed. Thereby, in the central area 1a of the cardboard 1, a glued portion 9, a left side wall portion 10, a front side wall portion 11, a right side wall portion 12, and a rear side wall portion 13 are formed in order from the left side, and the lower region 1b is Left bottom (inner flap) 5, front bottom (outer flap) in order from left
6, a right bottom (inner flap) 7 and a rear bottom (outer flap) 8 are formed. In the upper region 1b, a left lid (inner flap) 14 and a front lid (outer flap) 1 are arranged in order from the left.
5. A right lid (inner flap) 16 and a rear lid (outer flap) 17 are formed.

The dimensions of the inner flaps 5, 7, 14, 16 are W
× W / 2, and the dimensions of the outer flaps 6, 8, 15, 17 are L × W / 2. The dimensions of the left side wall 10 and the right side wall 12 are W × H, and the dimensions of the front side wall 11 and the rear side wall 13 are L × H. However, W, L, and H are arbitrary numerical values.

FIG. 3 shows A-
It is a perspective view which shows one type of carton. FIG. 4 shows FIG.
It is sectional drawing of the A-1 type carton shown in FIG. The cardboard 1 shown in FIG.
And the bottom inner flaps 5, 7 are closed, and the bottom outer flaps 6, 8 are closed.

Thereafter, as shown in FIG. 4, the inner flap 14 of the left lid is closed inside the carton, and the inner flap 14 is bent at right angles along the ruled lines 4a and 4b, and is wound inside the carton. Thereby, the reinforcing member 14 having a U-shaped cross section is formed on the side surface of the carton (the inner surface of the left side wall portion 13). Similarly, the right inner flap 16 is closed inside the carton, and the inner flap 16 is
Fold it at a right angle at a and 4b and wrap it inside the carton. Thereby, the reinforcing member 16 having a U-shaped cross section is formed on the side surface of the carton (the inner surface of the right side wall portion 12). By contacting the reinforcing members 14 and 16 with the bottom inside the carton, the reinforcing members 14 and 16 can contribute to the pressure resistance of the carton as a part of the body (side surface) of the carton. That is, in the reinforcing members 14 and 16 composed of the upper side member, the lower side member, and the connecting member for connecting the upper side member and the lower side member, the upper side member is applied to the outer flaps 15 and 17 of the lid, and the lower side member is applied to the outer flaps 6 and 7 of the bottom. By hitting 8,
The compressive strength of the carton can be increased.

Next, the product 21 put in a cushion (not shown) is stored in the carton, and the outer flap 1
Closing 5, 17 completes the A-1 type carton shown in FIGS.

According to the above embodiment, a carton can be produced at low cost, but only the dimensions of W, L and H can be changed, and a carton having only a single structure can be produced. In a -1 type carton, the compressive strength of the carton can be increased as compared with the conventional one. That is, by bending the inner flap of the lid portion of the A-1 type carton into a U-shaped cross section, the reinforcing members 14 and 16 are formed on the body of the carton, so that the compressive strength of the carton can be increased. As a result, the conventional A-1
When the same compressive strength is obtained as that of the type carton, the material of the carton can be reduced as compared with the conventional A-1 type carton. Therefore, the material cost of the carton can be reduced, and resources can be saved.

Further, since the reinforcing members 14 and 16 can be used as cushioning materials (cushion material) for storing products, the volume of the cushioning material can be reduced by the volume occupied by the reinforcing members 14 and 16.

Further, since a normal flexographic printing machine which does not require a punching die can be used, a carton can be produced at low cost. It can also be used regardless of the weight of the product.

The present invention can be applied to the case where the height H of the A-1 type carton is not more than W / 2 (W
Is the depth dimension of the carton). In other words, it can be applied when the thickness dimension of the product is W / 2 or less.

In the above embodiment, two ruled lines 4
Although a and 4b are added, this is a case where there is a certain margin in the difference between the height H dimension and the W / 2 dimension of the A-1 type carton. If there is not much room for this difference, it is only necessary to add an additional ruled line, fold the inner flap of the lid with the ruled line, and apply the tip of the inner flap to the inner bottom of the carton. In this case, the reinforcing member has an inverted L-shaped cross section. By doing so, the thickness of the left and right walls is doubled, so that the compressive strength of the carton can be improved.

Further, additional ruled lines 4a and 4b are formed on the outer flaps 15 and 17 of the lid portion.
In a and 4b, there is no problem if the outer flaps 15 and 17 are not bent but are bent only by the ruled line 3a.

Further, even if the print is located at the position where the additional ruled lines 4a and 4b enter, the print position can be shifted to
Functionally, it can be handled without any problem (see FIGS. 2 and 3).

[0029]

As described above, according to the present invention, the inner flap of the lid is bent inside the carton and a reinforcing member having a U-shaped cross section is provided between the outer flap of the lid and the inner flap of the bottom. Has formed. Therefore, it is possible to provide an A-1 type carton in which the compressive strength of the carton is improved without increasing the strength of the material itself of the carton.

[Brief description of the drawings]

FIG. 1 is a plan view showing a cardboard on which ruled lines are formed by a flexographic printing press.

FIG. 2 is an exploded view of an A-1 type carton according to the embodiment of the present invention.

FIG. 3 is a perspective view showing an A-1 type carton in which the cardboard of FIG. 1 is assembled.

FIG. 4 is a sectional view of the A-1 type carton shown in FIG. 3;

FIG. 5A is a plan view showing a corrugated cardboard on which ruled lines are formed by a flexographic printing machine, and FIG. 5B is a plan view of FIG.
It is sectional drawing which followed the 4b-4b line shown to (a).

6 (a) is a side view showing frames A and B of the corrugator, and FIG. 6 (b) is a front view of frames A and B shown in FIG. 6 (a).

FIG. 7 is a development view of a conventional A-1 type carton.

8 is a perspective view showing an A-1 type carton in which the corrugated board of FIG. 7 is assembled.

9 is a sectional view of the A-1 type carton shown in FIG. 8;

[Explanation of symbols]

1: Corrugated cardboard, 3a, 3b: Ruled line (recess), 4a, 4b
... Ruled line, 5 ... left bottom (inside flap), 6 ... front bottom (outside flap), 7 ... right bottom (inside flap), 8 ... rear bottom (outside flap), 9 ... glue, 10 ... left wall ,
11 front wall part, 12 right wall part, 13 rear wall part, 1
4 left lid (inner flap), 15 front lid (outer flap), 16 right lid (inner flap), 17 rear lid (outer flap), 20 groove, 21 product, 100 ... corrugated cardboard, 103a, 103b ... ruled line (recess), 105 ...
Left bottom (inner flap), 106: front bottom (outer flap), 107: right bottom (inner flap), 108: rear bottom (outer flap), 109: glue, 110: left wall, 111: front wall Reference numeral 112, right side wall, 113, rear side wall, 114, left side lid (inner flap), 115, front side lid (outer flap), 116, right side lid (inner flap), 117, rear side lid (Outer flap), 120 ... groove,
121 ... product.

Claims (2)

[Claims] 1. A lid and bottom inner flap having a vertical length of W / 2 and a horizontal length of W; an outer flap of a lid and bottom having a vertical length of W / 2; An A-1 type carton comprising: a reinforcing member formed between an outer flap of the lid portion and an inner flap of the bottom portion, wherein the inner flap of the lid portion is bent inward of the carton to form a cross section. An A-1 type carton comprising a U-shaped reinforcing member. 2. A lid and a bottom inner flap having a vertical length of W / 2 and a horizontal length of W, an outer flap of a lid and a bottom having a vertical length of W / 2, An A-1 type carton comprising: a reinforcing member formed between an outer flap of the lid portion and an inner flap of the bottom portion, wherein the inner flap of the lid portion is bent inward of the carton to form a cross section. An A-1 type carton, comprising a reinforcing member formed in an inverted L-shape.