JP3279997B2 - Paper pack 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 paper pack container for storing beverages such as milk and coffee.

[0002]

2. Description of the Related Art First, a conventional paper pack container is shown in FIGS.
This will be described with reference to FIG. Here, FIG. 4 is a side view of the paper pack container, FIG. 5 is a front view when the opening side is set to the front, and FIG. 6 is a state where the front flap on the opening side is opened from the state of FIG. FIG. 7 is a front view showing a state, and FIG.
FIG. 8 is a side view of FIG. 6, FIG. 8 is a view showing a state in which the front flap is partially drawn out, and FIG. 9 is a view showing a state in which the front flap is completely drawn out to form a spout.

Referring to FIGS. 4 to 6, a paper pack container 1 is shown.
No. 0 is manufactured by folding and gluing a piece of cardboard, and has, at its lower part, a body part 12 which is a box having a substantially square cross section for accommodating a beverage. At the top of the paper pack container 10, a lid portion 13 which is completely sealed is formed continuously with the main body portion 12 so as to maintain the beverage in a sterilized state until it is opened for drinking.

[0004] The lid portion 13 is formed by bending and gluing a portion continuous with the main body portion 12, but for convenience of the following description, the opening side is set to the front, and the front portion of the lid portion is set to the front flap 14. The left and right side flaps 16 (left side as viewed from the front) and the right side flap 18 (right side as viewed from the front) are referred to as the back flaps (not shown). I do. In addition, each flap is also continuous and integrated on the side,
Their heights are slightly different. That is, the height of the flaps 16 and 18 on both sides is the same as the front flap 1
4. The height of the flaps 16 and 18 is higher than the height of the back flap by the amount of glue allowance.

[0005] A bending line 30 is formed at the upper end of the main body portion 12 over the periphery, and along the bending line 30, the front flaps 14,
The left side flap 16, the right side flap 18, and the back flap are bent inward, in which case the flaps 16, 18 on both sides are simply bent inward so that their upper end portions come into contact, Front flap 1
4 is further bent along another fold line 32 as shown in FIG. 6, so that the upper end is folded back in the center to come into contact with the side flaps 16 and 18 on both sides and at the same time to the left and right upper end The triangular pyramid spaces 19 are formed in the folded front flaps 14 so that they come into contact with each other. The back flap is also folded in the same way as the front flap,
The upper end is folded back at the center and the side flaps 1 on both sides
At the same time, the upper end portions on the left and right are in contact with each other, so that a triangular pyramid space 21 is also formed in the folded front flap 14.

The front flap 14, the side flaps 1 on both sides
6, 18 and a portion where the upper end portions of the back flaps contact each other constitutes a portion to be glued (glue portion 25). For gluing, the front flap 14
(1) between the left side flap 16 and the left side of the upper end of the
4-16b), a portion (14-18b) between the right side and the right side flap 18 of the upper end portion of the front flap 14, and a portion (14a) between the left side and the right side of the upper end portion of the front flap 14. Portion between the uppermost end of left flap 16 and the uppermost end of right flap 18 (16-18b)
It is done in.

Further, gluing is performed on the back flap not on the opening side, similarly to the front flap 14.

Reference numerals 15 and 17 denote a boundary line between the front flap 14 and the left side flap 16 and a boundary line between the front flap 14 and the right side flap 18, respectively.

In order to open the lid portion 13 thus constructed, the portion including the right and left borders 15 and 17 is sandwiched between the right and left thumbs and forefingers, as shown by the arrow A in FIG.
Pull on both sides. Then, the left and right glued portions 14a of the upper end portion of the front flap 14 and the left flap 16
And the glued portion (16-18b) on the clearance side between the uppermost end of the right flap 18 and the uppermost end of the right flap 18 is peeled off and folded along the folding line 32 as shown in FIG. The front flap 14 that has been set is returned to the initial flat state. In this state, a portion (14-16b) between the left side and the left side flap 16 of the upper end portion of the front flap 14 and a portion (14-b) between the right side and the right side flap 18 of the upper end portion of the front flap 14 are provided. 18
b) is still glued, and the lid is
Almost closed.

Next, in order to release the sealed state by opening the lid portion 13 and to form a spout in the front flap 14 in the opened state, the position of the arrow B shown in FIGS. For example, an index finger nail is inserted into the center of the upper end of the finger, and this part is hooked with the nail and pulled out toward the user.
Then, as shown in FIG. 8, the gluing to the side flaps 16 and 18 on both sides of the front flap 14 is peeled off, and the front flap 14 is pulled out to the front. After that, when it is further pulled out to the front, as shown in FIG.
4 forms a triangular pyramid protruding forward and a spout 1
4c is formed on the upper end portion. As a result, the beverage in the paper pack container can be poured into, for example, a cup.

[0011]

However, in the conventional paper pack container, it is difficult to insert the central portion of the upper end of the front flap 14 with a nail or the like because it is glued. Particularly, when the nail is short, it is difficult. You may not be able to point your nails. In addition, there is a case where the nail cannot be inserted well and a tear is formed at the center of the upper end of the front flap 14. In this case, there will be a crack in the spout to be formed thereafter, and it will not be able to pour well into a cup or the like.

Accordingly, it is an object of the present invention to provide a paper pack container which can be easily opened without forming the above-mentioned problems, and which can form a spout without damage.

[0013] To achieve the above object, the present invention provides
In a paper pack container having a main body portion and a lid portion formed continuously on an upper portion of the main body portion, the lid portion has four flaps that are folded and adhered at an upper portion, and among the four flaps, The front flap on the opening side has an extension portion for pulling out the front flap and opening the lid portion, the extension portion is folded on the front side, and an adhesive portion is provided on the back side portion. An adhesive portion is provided on the front side thereof and is adhered to each other, and the mutually adhered portion on the front side of the extension portion of the front flap is a part of the extension portion. To adopt.

[0014]

Next, embodiments of the present invention will be described. FIG. 1 is a view showing a state in which a front flap of a lid portion of a paper pack container of the present invention is opened on both sides, and FIG.
FIG. 2 is a side view of FIG. 1, and FIG. 3 is a view showing a state where a front flap of a lid portion of a paper pack container is opened on both sides, and FIG. It is a figure corresponding to the lid part of.

The present invention relates to the improvement of the lid portion of the paper pack container. Therefore, the present invention will mainly be described with respect to the lid portion, and the other portions are substantially the same as the conventional example.
Description is omitted.

As shown in FIG. 1, in the present invention, the front flap 14 has an extension portion 14d (shown in the area of a number of points) extending further upward from the upper end portion of the conventional front flap 14. It is. In addition, this extension part 1
4d is preferably formed integrally with the front flap 14, but another material or a similar material may be fixed by bonding or the like. Also, the width need not be the same rectangular shape as the front flap as shown, for example,
It may be shorter in width, and need not be rectangular in any suitable shape.

As shown in FIG. 2 and FIG.
4d is folded back on the front flap 14 and overlapped. At this time, the back side of the extension portion 14d (that is, the front flap 14
(The part on the side in contact with) is not glued, but is glued on the front side (the glued part is indicated by a large number of horizontal lines).
After that, the glued portions are bonded. That is, similarly to the conventional example, the portions 14a, 14-16b, 14-18
b, 16-18b are adhered and the extension 14d
Are adhered to each other.

In order to open the paper pack container, similarly to FIG. 5 showing a conventional example, the left and right borders are sandwiched between fingers and pulled to both sides. At this time, the adhesive between the left and right portions of the extension portion 14d is peeled off, and the state shown in FIG. 3 is obtained. Thereafter, the extension portion 14d is lifted up to a level so that the extension portion 1d becomes substantially horizontal.
By simply pulling 4d forward, the lid is opened and a spout is formed.

[0019]

As described above, according to the present invention,
A paper pack container that can be easily opened and can be formed without damaging the spout can be obtained without causing the problem as in the conventional paper pack container.

[Brief description of the drawings]

FIG. 1 is a view showing a state in which a front flap of a lid portion of a paper pack container of the present invention is opened on both sides, and is a diagram corresponding to the lid portion of FIG. 6 of a conventional example.

FIG. 2 is a side view of the paper pack container.

FIG. 3 is a view showing a state in which a front flap of a lid portion of a paper pack container is opened on both sides, and is a diagram corresponding to the lid portion in FIG. 6 of a conventional example.

FIG. 4 is a side view of the paper pack container.

FIG. 5 is a front view when the opening side is set to the front.

FIG. 6 is a front view showing a state in which a front flap on an opening side is opened from the state of FIG. 5;

FIG. 7 is a side view of FIG. 6;

FIG. 8 is a view showing a state in which the front flap is partially pulled out.

FIG. 9 is a view in which the front flap is completely pulled out to form a spout.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Paper pack container 12 Container main body 13 Lid part 14 Front flap 14d Extension part 16 Left side flap 18 Right side flap 25 Glued part

Claims (1)

(57) [Claims] 1. A paper pack container having a main body portion and a lid portion formed continuously on an upper portion of the main body portion, wherein the lid portion has four flaps which are folded and bonded at an upper portion, The front flap on the opening side of the four flaps has an extension portion for pulling out the front flap and opening the lid portion, the extension portion being folded on the front side, and an adhesive portion on the back side portion. Are not provided, an adhesive portion is provided on the front side thereof, and they are bonded to each other, and the mutually bonded portion on the front side of the extension portion of the front flap is a part of the extension portion. Paper pack container.