JPH08301266A - Paper carton - Google Patents

Abstract

PURPOSE: To surely make a box by means of a packaging machine for corrugated fiberboard even from a paper board. CONSTITUTION: A paper board is used as a blank B, which is formed into a box by a sack sticking method, and in the blank B, each of two folding rules, which serve as folding lines at least at the time of sack sticking, is constituted of a folding rule provided with one or more crushed rules α midway in a main rule β. Since when the blank B is sack stuck, the blank is not fully folded at the crushed rule and a swelling remains and hence a repulsive force is produced so that a box can be easily raised, and hence even if a paper board, which is inexpensive and on which a fine printing can be applied, is used, boxes can be sufficiently made using a prior art packaging machine for corrugated fiberboard. And in a blank which is formed into a box by a wraparound method, similar crushed rules are provided in four folding rules, which serve as ridge lines of a body part, whereby the blank can be surely folded at the folding rules.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper carton used for storing a plurality of products such as beverage cans arranged side by side.

[0002]

2. Description of the Related Art Conventionally, when a plurality of beverage cans such as canned beer and canned juice are collectively packaged, a paper carton made of corrugated paperboard is generally used, but the corrugated paperboard is composed of a liner and a core. It has a drawback that it is relatively expensive because of the large amount of paper used and that it cannot be printed clean because of poor printability. Therefore, in order to reduce the cost of the original fabric and increase the product value by beautiful printing, paper cartons using paperboard instead of corrugated paperboard have been used recently.

As a method of making a paper carton as described above, a blank attached with a sack is opened to form a rectangular tubular body, and a plurality of beverage cans are inserted into the body. A sack pasting method in which both ends are glued and a lid is applied, and a plurality of beverage cans are placed on a developed blank and then a body is formed so as to be wrapped, and then both sides of the body are glued and wrapped. Either of the lap around methods is adopted.

[0004]

By the way, since packaging machines using corrugated cardboard are more frequently used than before, it is necessary to utilize this packaging machine even when packaging it in a carton made of paperboard. It is preferable in that
However, in the sack pasting method, the sack pasting blanks stacked in the supply unit are adsorbed and pulled out in order from the bottom, and then the bent two sides are tapped and pushed to open in a rectangular tube shape. In comparison, the sack-applied blanks that are thin and tend to bend easily are folded along the creases, so it may not be possible to open the cardboard packaging machine as it is. In the lapland method, the beverage can is placed on the unfolded blank and then folded.However, the paperboard is not as stiff as cardboard, and the creases cannot be formed deeply. It may not break properly along the ruled lines.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to surely make a box by using a packaging machine for corrugated cardboard even though it is made of paperboard. It is to provide the made paper carton.

[0006]

In order to achieve the above object, the first paper carton according to the present invention forms a rectangular tube-shaped body by opening a sack-bonded blank. In a carton produced by storing the product in a part and then closing both sides thereof, a paperboard is used for the blank, and at least one of four creases forming the ridgeline of the body part in the blank. Two creases, which will be bent when the sack is pasted, are placed in the middle of the main crease.
The crushed rule is composed of two or more creases, and the crushed rule is composed of two straight line portions parallel to the main ruled line and a connecting portion for connecting these straight line parts and the main ruled line in a Y-shape. It is characterized by

Further, the second paper carton according to the present invention is
In a paper carton produced by placing a product on a developed blank, assembling the blank to form a rectangular tubular body, and then closing both sides thereof, using a paperboard for the blank, and In the blank, four creases that form the ridgeline of the body part are inserted in the middle of the main crease line.
The crease rule is composed of two or more creases, and the crush rule is composed of two straight line portions parallel to the main crease line and a connecting portion for connecting these straight line portions and the main crease line in a Y-shape. It is characterized by having done.

[0008]

In the former paper carton constructed as described above, when the blank is sacked, the creases that become the fold lines are bent at the main crease lines, but the crushed creases do not fold and the bulge remains and the repulsive force remains. As a result, the sack-applied blank is easy to open in the packaging process.

Further, in the latter paper carton, when the unfolded blank is folded with a crease, the force is concentrated on the crushed crease, and after holding it to some extent, it folds along the main crease all at once, so it is surely folded. You can fold it at the ruled line.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a development view showing an embodiment of a blank for forming a first paper carton according to the present invention.

The blank B is formed by punching a printed paperboard, and is divided into panel parts by ruled lines as shown in the drawing. In the figure, reference numeral 1 denotes one wide panel, and narrow panels 2 and 3 are continuously provided on the long side of the wide panel 1 via folding lines a and b, and a narrow panel 2 is provided with a folding line c. The other wide panel 4 is continuously provided via this, and an adhesive flap 5 is further provided to this wide panel 4 via a crease d. Further, the outer lid panels 6 and 7 are provided on the short side of one wide panel 1 via folding lines e and f, and the outer lid panels are provided on the short side of the other wide panel 4 via folding lines g and h. Panels 8 and 9 are provided in series, and inner lid panels 10 and 11 are provided in series on the short side of the narrow panel 2 via folding lines i and j.
Inner lid panels 12 and 13 are connected to the narrow side of the narrow panel 3 via folding lines k and l.

And among the folding lines for partitioning each panel,
Four folding lines a, b, c, which form the ridgeline of the body when opened
d has three crushed ruled lines α having an enlarged shape shown in FIG. 2 in the middle of the main ruled line β. The crushed ruled line α is composed of two straight line parts α ₁ parallel to the main ruled line β and a connecting part α ₂ that connects the straight line part α ₁ and the main ruled line β in a Y shape. Then, a crushed ruled line α
Corresponding to, the notches 3a are provided at three locations. Also,
In the present embodiment, although auxiliary, the wide panels 1 and 4 are provided with a plurality of ruled lines m and n in the long side direction.

In order to assemble a blank B having the above-mentioned structure to make a paper carton, first, the other wide panel 4 is folded inward by a crease c, and then the side panel 3 is folded inward by a crease b to form a side surface. By sticking the inner surface of the end of the panel 3 to the adhesive flap 5, a sack is attached as shown in FIG. In this case, the sack-attached blank B is bent at the main ruled line β forming the creases c and b, but is not bent at the crushed ruled line α, and a bulge remains and has a repulsive force. Therefore, when the sack-applied blank B is supplied in a stacked state to the feeder of a cardboard packaging machine (sack-applied type) and sucked and drawn in order from the bottom, the squeezed ruled part α swells slightly. It becomes a state. The feeder portion supports both sides of the sucked blank B in the longitudinal direction, and when sucking the dotted line portion A in the drawing and pulling it downward, the sucked blank B bends, but the sucked blank B is pulled out. Since B has a bulge, it immediately returns to a flat state. Further, since the wide panels 1 and 4 are provided with a plurality of ruled lines m and n in the long side direction and these play the role of reinforcing ribs, the operation of returning to the original state from the bent state is more reliably performed.

After the sack-applied blank B is pulled out from the feeder portion, the folded crease b is tapped to open the box. In this case, at the remaining creases a and d, the force concentrates on the crushed creases α as the boxing progresses, so after holding for a while, the creases may be bent along the creases a and d all at once. Become. It should be noted that even if the folding ruled lines a and d are not provided with the crushed ruled line α, there is no problem in starting the boxing, but it is better to provide the folding lines neatly at the folding lines a and d as described above. You can When the body is opened in this manner to form the body portion as shown in FIG. 4, three crushed portions are formed on each of the four ridge lines corresponding to the crushed ruled line α, but this does not interfere. Then, after the sack-applied blank B was opened, canned beer (4 × 6 in the present embodiment).
The inner lid panel and the outer lid panel located on both sides of the body are closed by hot melt to complete the packaging process.

FIG. 5 is a development view showing an embodiment of a blank for forming a second paper carton according to the present invention.

The blank B'is also formed by punching a printed paperboard, and is divided into panel parts by ruled lines as shown in the drawing. In the figure, 21 is one wide panel, a narrow panel 22 is continuously provided on the long side of this wide panel 21 via a crease a, and the narrow panel 22 is arranged on the other side via a fold b. A wide panel 23 is continuously provided, a narrow panel 24 is continuously provided to the wide panel 23 through a crease c, and an adhesive flap 25 is continuously provided to the narrow panel 24 through a crease d. . Also, one wide panel 2
On the short side of 1, the outer lid panel 26,
27 has folding lines g and h on the short side of the other wide panel 23.
The outer lid panels 28 and 29 are continuously provided through the narrow lid panel 22, and the inner lid panels 30 and 31 are continuously provided to the narrow side of the narrow panel 22 via the folding lines i and j. Inner lid panels 32 and 33 are continuously provided on the short side through folding lines k and l.

Among the folding lines that divide each panel,
Four folding lines a, b, c, which form the ridgeline of the body when opened
d has three crushed ruled lines α similar to those described above in the middle of the main ruled line β. The wide panel 21 is provided with three notches 21a at the edge thereof in correspondence with the collapsed ruled α of the folded ruled d. In addition, in this embodiment, although auxiliary, a plurality of ruled lines m in the short side direction are formed on the wide panels 21 and 23.
n is provided.

The blank B'having the above structure is supplied in a stacked state to the feeder section of the packaging machine for cardboard (lapland type) in the unfolded state. Then, after pulling out one by one from the feeder section, the narrow panel 24 is bent by the folding rule c to stand upright with respect to the wide panel 23. In this state, canned beer (4 in this embodiment
(6 pieces). Next, the adhesive flap 25 is folded inward along the folding line d, and the wide panel 21 and the narrow panel 22 are folded inward along the folding line a and the folding line b, respectively, to wrap canned beer, and the end portion of the wide panel 21 is wrapped. A body is formed by bonding the inner surface to the adhesive flap 25. After forming the body portion and wrapping the canned beer in this manner, the inner lid panel and the outer lid panel located on both sides of the body portion are closed by hot melt, thereby completing the packaging process.

When the wide panel 21 and the narrow panel 22 are bent as described above, since the paperboard is not stiff and easily bent, there is a risk of bending at a position other than the creases a and b, but in the blank B'of this embodiment. Fold ruled lines a and b
Is provided, so the force concentrates on this crushed ruled α part,
After holding it for a while, it bends at a stretch along the creases a and b. Further, since the wide panel 21 is provided with a plurality of ruled lines m in the short side direction, it also has an effect of preventing the wide panel 21 from bending and assisting the bending. Note that the creases c,
Since the crushed ruled α is also present in d, these creases are also easily bent at right angles. Further, since the plurality of ruled lines m and n provided on the wide panels 21 and 23 serve as the reinforcing ribs, the handling of the blank B ′ can be reduced during handling.

[0021]

Since the present invention is constructed as described above, it has the following effects.

The paper carton according to claim 1 uses a paperboard as a blank for box making by the sack pasting method, and at least two creases, which become fold lines at the time of sack pasting, are formed on the blank. By constructing a crease with one or more crushed rules in the middle, when the blank is sack stuck, the crushed ruled parts do not bend completely, leaving a bulge and a repulsive force. Therefore, it is possible to sufficiently make the box by using the conventional packaging machine for corrugated cardboard, although the cost is low and the paperboard which can perform the beautiful printing is used.

The paper carton according to claim 2 uses a paperboard as a blank for box making by the lapland method,
When the four-fold creases that form the ridgeline of the body of the blank are formed by folds each having one or more crushed creases in the middle of the main creases In addition, since the force is concentrated on the crushed ruled part, it will bend along the main ruled line at once after holding for a while,
Since it can be reliably folded at the creases, it is possible to sufficiently make boxes using a conventional cardboard packaging machine, even though the cost is low and the paperboard that can be used for clean printing is used. .

[Brief description of drawings]

FIG. 1 is a development view showing an embodiment of a blank for forming a first paper carton according to the present invention.

FIG. 2 is an enlarged view showing the vicinity of a crushed rule.

FIG. 3 is a plan view showing a state in which the blank of FIG. 1 is sack stuck.

FIG. 4 is a perspective view showing the sack-attached blank shown in FIG. 3 in a raised state.

FIG. 5 is a development view showing an embodiment of a blank for forming a second paper carton according to the present invention.

[Explanation of symbols]

B, B'Blank α Collapsed ruled α ₁ Straight line part α ₂ Connected part β Main ruled line

Claims (2)

[Claims] 1. A carton produced by opening a sack-attached blank to form a rectangular tube-shaped body, storing products in the body, and then closing both sides of the body. A paperboard is used for the blank, and at least two of the four creases that form the ridgeline of the body portion of the blank, which are fold lines when the sack is attached, are inserted in the middle of the main crease line. The crushed rule is composed of two or more creases, and the crushed rule is composed of two straight line portions parallel to the main ruled line and a connecting portion for connecting these straight line parts and the main ruled line in a Y-shape. Paper carton that is characterized by: 2. A paper carton produced by placing a product on an unfolded blank, assembling the blank to form a rectangular tubular body, and then closing both sides thereof.
A paperboard is used for the blank, and four creases, which are the ridgelines of the body in the blank, are formed by creases each having one or more crushed creases in the middle of the main creases. A paper carton characterized in that the ruled line is composed of two straight line portions parallel to the main ruled line and a connecting portion for connecting the straight line portion and the main ruled line in a Y-shape.