JP3205924B2 - Paper pack opening - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening of a paper pack container for enclosing a liquid such as milk or juice, and more particularly to an opening capable of easily bending the opening edge to the outside.

[0002]

2. Description of the Related Art Paper pack containers of milk or the like having a medium or larger size have a rectangular cross section and have an upper end opening bonded to form a mountain-shaped roof. By opening one side of the mountain ridge, a diamond-shaped opening is formed on one side. Then, the paper pack is tilted so that liquid such as milk flows out from the diamond-shaped opening.

[0003]

In such a medium-sized or larger paper pack container, there is a case where a user wants to drink milk or the like directly by putting a mouth on a diamond-shaped opening. At this time, the edge of the opening is originally peeled off, so that the outer surface of the edge of the opening is a rough peeling surface. For this reason, there is a drawback that when the lips are put on the lips there is a rough contact feeling and it is uncomfortable. Therefore, the present invention aims to provide an opening that does not give a rough feeling to the contact portion when drinking milk or the like by directly putting a mouth on the opening of the paper pack. Take.

[0004]

The opening of the paper pack according to the present invention is an opening 1 of a container which can be opened in a rhombus shape so that an internal liquid outflow portion protrudes from one side. A belt-shaped first bonded portion 2 having a band-shaped first bonded portion 2 at an edge portion of an outer surface on a side surface side and having substantially no joint portion on an inner surface side of the first bonded portion 2. Then, cuts 3, 3 or notches for bending the edge are formed at two places separated from each other, leaving a part of the band-like width from the edge thereof. Here, having substantially no joint portion means that most of the inner surface side is not joined. or,
In a preferred embodiment of the present invention, the cuts 3, 3 or notches are formed at both edges of the first bonded portion 2, and each cut 3 or notch is obliquely downward from the edge and It is formed so as to face the center of the opening. Further, instead of the cuts 3 and 3, a fragile portion for bending the edge which can be easily cut may be provided.

[0005]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an opening of the paper pack of the present invention,
FIG. 2 shows a state where the adhesive portion is peeled off, and FIG.
FIG. 4 is an enlarged view of a main part of the opening edge of FIG. FIG. 3 shows a first preparation state of the opening order of the opening of the present invention, and FIG. 4 shows the second preparation state. FIG. 5 is an explanatory view of the state of use. The paper pack 8 of this embodiment is a container of juice, milk, or the like and is formed in a box shape, the upper end of which is bent along the folding line 10, and the entire upper portion is joined to a mountain-shaped roof shape. Things. The height of the upper end of the first side wall 16 opposed to each other is formed in advance to be lower than the height of the upper end of the second side wall 17 opposed to each other. And the first side wall 16
A band-shaped first bonded portion 2 is formed on the outer surface of the upper edge of the second side wall, and a second band-shaped bonded portion 4 is formed on the inner surface of the upper edge of the second side wall 17. On the upper end of the first side wall 16, an inverted V-shaped fold line 13 is formed in advance in a valley fold. At the same time, an edge fold line 12 of the valley fold is also formed at the edge of the first bonded portion 2.

A fold line of a valley fold is formed on the outer surface of the upper end portion of the second side wall 17 at a position below the second bonding portion 4. Although not shown in FIG. 1, an oblique valley bending line is formed in advance between the upper end of the second side wall 17 and the corners of the second side wall 17 and the first side wall 16. Here, the feature of the present invention is that a notch 3 is formed at both edges of the strip-shaped first bonding portion 2 of the first side wall 16 from the edge thereof, and the tip thereof is higher than the edge folding line 12. It is located in. The paper pack 8 in which the cuts 3 are formed in advance in this way is joined like a conventional paper pack.
In addition, in addition to the conventional bonding portion, if only the range of the dashed line which is the edge of the cut 3 in FIG. 2 is bonded to the abutting portion 15 below the second bonding portion 4 in FIG. Thus, it is possible to more reliably prevent milk or the like from leaking from the cut 3 to the outside.

[0007] At the time of opening, the joint around the cut 3 is spontaneously peeled off by opening as shown in FIGS. Then, after opening, the first bonded portion 2 is bent outward to the outer surface side as shown in FIG. 3 while the first bonded portion 2 is slightly opened to the first side wall 16 side as shown in FIG. That is, the space between the cuts 3 formed at both edges of the first bonded portion 2 is bent downward. At this time, the edge fold line 12 in FIG. 2 becomes the fold line of the bent portion 6 in FIG. At this time, the tip of the cut 3 is slightly cut open downward, and the tip is cut along the edge folding line 12 in FIG.
May be reached. Next, as shown in FIG. 4, the opening 1 is further opened toward the first side wall 16 to obtain a large opening. Then, as shown in FIG. 5, the folded portion 6 is brought into contact with the surface of the lips 9 of the person, and the paper
11 can be poured directly into the mouth. In general, the inner peripheral surface of the paper pack 8 is coated with a waterproof coating, which forms the coating surface 7, so that the outer surface of the bent portion 6 is an extremely smooth surface. On the other hand, since the back surface side of the bent portion 6 is peeled off from the adhesive, a rough bonded peeling surface 14 is formed. However, since the rough surface is folded back to the back side, it does not come into contact with the mouth of a person.

[0008]

[Modification] In the above embodiment, a cutout may be provided in place of the cuts 3 and 3. Also, the cuts 3 and 3 in the above embodiment
Instead, a fragile portion for bending which can be easily cut may be provided in that portion. Alternatively, the fragile portion may be combined with the cuts 3 and 3.

[0009]

The opening of the opening of the paper pack according to the present invention is formed with a notch 3, 3 or a notch in the first bonded portion 2 at a position apart from each other, leaving a part in the width direction. Therefore, after opening the joint portion of the paper pack, the pair of cuts 3 and 3 or the cutout can be turned outward. Thereby, the edge of the liquid outlet of the paper pack can be formed smoothly. Therefore, when the mouth liquid is directly put on the mouth edge to drink the internal liquid, the contact feeling on the lips is improved. Conversely, since the opening edge of the conventional paper pack is an adhesive peeling surface, the opening surface is rough, and if you put the mouth on it and drink milk or juice inside, it will be rough at the contact part of the mouth. However, the opening of the present invention can eliminate such uncomfortable contact. Then, it is possible to position the peeled first bonded portion 2 on the back surface side of the contact portion.

[Brief description of the drawings]

FIG. 1 shows an opening of a paper pack of the present invention in a state where an adhesive portion thereof is peeled off.

FIG. 2 is an enlarged view of a main part of an opening edge of the opening 1 of FIG. 1;

FIG. 3 shows the first step in the order of using the opening of the present invention.

FIG. 4 shows the second step.

FIG. 5 is an explanatory view of a use state of the opening of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening opening 2 First bonding part 3 Cut 4 Second bonding part 5 Joining part 6 Folding part 7 Covering surface 8 Paper pack 9 Lip 10 Folding line 11 Liquid 12 Edge folding line 13 Reverse V-shaped folding line 14 Joining peeling surface 15 Contact part 16 First side wall 17 Second side wall

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 5/74 B65D 5/70

Claims (3)

(57) [Claims] 1. A band-shaped first laminating opening 1 of a container which can be opened in a rhombus shape so that an internal liquid outflow portion protrudes from one side, and an edge of the outer surface on the one side. The first band-like laminating part 2 is separated from each other at an opening of a paper pack having a part 2 and having substantially no joint part on the inner surface side of the first laminating part 2.
An opening for a paper pack, characterized in that cuts 3, 3 or cutouts for bending the edge are formed in some places, leaving a part of the band-like width from the edge. 2. The device according to claim 1, wherein the cuts 3, 3 or notches are formed at both edges of the first bonded portion 2, and each cut 3 or notch is obliquely downward from the edge. And formed so that it faces toward the center of the opening 1. 3. A band-shaped first laminating opening 1 of an opening of a container which can be opened in a rhombus shape so that an internal liquid outflow portion protrudes on one side, and an edge of an outer surface on the one side. In the opening of a paper pack having a portion 2 and having no joining portion on the inner surface side of the first bonded portion 2, the two strips 2 are separated from each other by the strip-shaped first bonded portion 2.
An opening for opening a paper pack, characterized in that fragile portions for bending the edge portion, which can be easily cut, are formed substantially at the band-like width from the edge thereof at a plurality of locations.