JPH10101097A - Packaging bag with sealing function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag with sealing function wherein from the opening part thereof articles to be packed are not exposed and which is hardly opened unexpeatedly and has good productivity and excellent appearance and style. SOLUTION: A perforation 4 for cutting is provided on one side edge part of a rectangular thermoplastic synthetic resin sheet and a specified width is laminated by making this side edge part inside and a facing side edge part outside. The apex edge of the side edge part on which the perforation 4 for cutting is provided is heat-fused 5 on another side edge part positioned outside. After folding parts 3 and 3 for gussets are formed by folding specified side face parts inside, both front and back walls are integrally bonded by heat fusion 6. After specified number of articles to be packed are filled from the top end opening part, the opening part is sealed by heat fusion 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to sanitary articles such as sanitary napkins, disposable diapers, cosmetic articles such as cotton (puff) for cosmetics, tea bags, sprinkles, individually packed foods such as instant miso soup, and others. The present invention relates to a packaging bag with a sealing function used for packaging various articles.

[0002]

2. Description of the Related Art Heretofore, as one of such packaging bags, there is a bag provided with a break perforation for opening the bag on the wall surface of the bag body. Once this conventional product is opened, once the bag is opened, the item to be packaged is exposed from the opening and the appearance is impaired, and dirt, dust, etc. enter from the opening, and in terms of hygiene,
It was undesirable. In addition, there is a problem that the perforation may be broken if the broken perforation is carelessly gripped carelessly during transportation or the like.

On the other hand, as another packaging bag of this kind, a packaging bag with a closing string provided with a closing string for closing the opening at the opening of the bag body, or the opening of the bag body is sealed with a polychuck. 2. Description of the Related Art A packaging bag employing a system is known. In such a packaging bag, the opening is to be sealed with these sealing members in order to prevent the object to be packaged from being exposed.

However, in these packaging bags with a sealing function, since a sealing member such as a string or a polychuck must be separately attached to the bag body, productivity is poor, and the cost is increased. Was. Further, since the sealing member is visible to the outside, there is a disadvantage that the appearance is inferior.

[0005] The present invention has been made in view of the above-mentioned difficulties, and its main object is that the packaged object is not exposed from the opening, it is difficult to open the bag unintentionally, and the productivity is good. An object of the present invention is to provide a packaging bag with a sealing function that is excellent in appearance and appearance.

[0006]

In order to achieve the above-mentioned object, a packaging bag with a sealing function according to the present invention is provided outside the first front wall of the bag body, and at the free end side of the bag, with the second front wall being free. The end side is overlapped by a predetermined width, and the front end edge of the first front wall located inside is joined and integrated with the second front wall, while the bag is opened in a portion along the joining line at the overlapping portion with the second front wall. A structure in which a break perforation is provided is adopted.

[0007] According to this configuration, the packaging bag holds down the surface of the first front wall that is not overlapped with the second front wall with one hand and the first front wall of the second front wall with the other hand. A method of breaking the break perforation by pulling from the both sides so as to tear the break perforation by tearing the non-overlapping surface, turning up the overlapping portion of the second front wall, The bag is opened mainly by pressing the vicinity of the break perforation to push the break perforation. In the former method, since the leading edge of the first front wall is joined and integrated with the second front wall, the position of the break perforation does not shift due to the pulling force from both sides. For this reason, the force applied to the first front wall is directly transmitted to the break perforation, and the force applied to the second front wall is not dispersed, and is not dispersed through the joint with the first front wall. Being conveyed, opening the bag is extremely easy. In the latter method, the leading edge of the first front wall is also joined and integrated with the second front wall, so that the force applied to the first front wall is directly transmitted to the break perforation, and the bag is opened very easily. Done.
In this manner, the break perforation is broken, and the article to be packaged is taken out from the opening. Thereafter, by overlapping the overlapped portion of the second front wall on the first front wall as before, the opening is sealed so as to cover the opening, and the appearance is maintained, and at the same time, dust, dust, etc. Mixing is prevented. Before the bag is opened, the break perforations provided on the first front wall are covered and covered by the overlapping portion of the second front wall. The bag is blocked.
Further, since there is no need to separately attach a sealing member, productivity is improved, and since no sealing member is used, appearance and appearance are not impaired.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In this specification, for convenience of explanation, FIG.
, The upper end of the paper surface is defined as the upper side, and the lower end side is defined as the lower side. Of the four peripheral walls of the packaging bag shown in FIG.

FIGS. 1 to 5 show an embodiment of a packaging bag with a sealing function according to the present invention, in which a plurality of sanitary napkins individually packaged as a packaged object (8) are packaged. Is shown. Although the surface of the packaging bag (A) is not shown in the drawing, the standard display of the sanitary napkin, precautionary notes, and the like are printed in the same manner as the conventional sanitary napkin packaging bag. The packaging bag (A) is made of a thermoplastic synthetic resin film or sheet (1
1).

In FIG. 1, the front wall (1) of the packaging bag (A) has a first front wall (1a) and a second front wall (1b).
The free end side of the second front wall (1b) is overlapped by a predetermined width on the free end side of the first front wall (1a) to constitute the front wall (1). These first and second front walls (1a) and (1b) are continuously provided from both side edges of the rear wall (2) via gusset folds (3) and (3). The upper and lower edges of the first and second front walls (1a) and (1b) are thermally fused to the upper and lower edges of the rear wall (2) together with the upper and lower edges of the gusset folds (3) and (3). Are joined and integrated. In the figure,
(6) joins and integrates the lower edges of the first and second front walls (1a) and (1b), the lower edges of the gusset folds (3) and (3), and the lower edge of the rear wall (2). Heat fusion wire,
(7) joins and integrates the upper edges of the first and second front walls (1a) and (1b), the upper edges of the gusset folds (3) and (3), and the upper edge of the rear wall (2). This is a heat-sealed wire.

Further, the leading edge of the first front wall (1a)
It is bonded and integrated to the second front wall (1b) by heat fusion. (5) is the heat fusion wire. Then, at a position near the heat fusion line (5) at a portion where the first front wall (1a) overlaps with the second front wall (1b), a straight line is formed along the heat fusion line (5). A tear-like perforation (4) for opening the bag is provided. This packaging bag (A) is shown in FIG.
As shown in Fig. 7, the bag is opened by breaking the break perforation (4), and the article to be packaged (8) is taken out from the opening (12).

Hereinafter, the packaging bag (A) of this embodiment will be described with reference to a manufacturing process example.

As shown in FIG. 2A, the packaging bag (A) is made of a thermoplastic synthetic resin film or sheet (11) having a predetermined width. In the figure, the break perforation (4) is provided at one side edge of the film or sheet (11). As shown in FIG. 2 (b), the film or sheet (11) is overlapped with a predetermined width with the side edge provided with the break perforation (4) inside and the opposing side edge outside. The front edge of the side edge portion provided with the break perforation (4) is joined and integrated by heat fusion to the other side edge portion located outside to form a flat cylindrical shape. After the left and right side surfaces formed in the cylindrical shape are folded inward in the directions of arrows (9) and (9) to form gusset folded portions (3) and (3) as shown in FIG. The front and rear walls are joined and integrated by heat fusion along the line (13) and cut off, so that, as shown in FIG.
A bag with the label is formed. In the figure, (1a) is the first
The front wall, (1b) is the second front wall, and (2) is the rear wall. Then, after a predetermined number of objects to be packaged (8) are filled into the bag from the upper end opening as shown by an arrow (10), the upper end opening is sealed by heat sealing, whereby FIG. The packaging bag (A) shown is formed.

When taking out the article to be packaged (8) from the packaging bag (A), as described above, one hand does not overlap the second front wall (1b) of the first front wall (1a). Holding down the surface of the second front wall (1b) that is not overlapped with the first front wall (1a) with the other hand,
Pulling the fractured perforation (4) from both sides to tear it, or turning up the overlapping portion of the second front wall (1b), and pushing the vicinity of the fracture perforation (4) of the first front wall (1a) with a fingertip. Breaking perforation (4)
To break. Then, as shown in FIG. 5, the packaged object (8) is taken out from the formed opening (12). After taking out the desired number of items to be packaged (8), the second front wall (1b)
Is overlapped on the first front wall (1a) as before, and the opening (12) is sealed so as to cover it. again,
When taking out the packaged object (8), the second front wall (1b)
Is turned up, a desired number of items to be packaged (8) are taken out from the opening (12), and similarly, the overlapping portion of the second front wall (1b) is overlapped with the first front wall (1a). Reseal the opening (12).

In the packaging bag (A) of this embodiment, the first front wall (1a) and the second front wall (1b) have upper and lower end edges thermally bonded to the rear wall (2). Since it is joined and integrated, the break perforation (4) and the opening (12)
Can be prevented from being unintentionally turned up by the overlapping portion of the second front wall (1b) that covers the second front wall (1b). Further, the first front wall (1a) and the second front wall (1
b) and the rear wall (2) are the gusset folds (3)
Since a plurality of articles to be packaged (8) can be compactly packaged because they are continuously provided via (3).

Although the embodiment of the present invention has been described above, the present invention is not limited to the illustrated embodiment. For example, the packaging bag (A) may be made from a thermoplastic synthetic resin film or sheet (11) as in the illustrated embodiment, or the thermoplastic synthetic resin may be made of a fiber-tensile sheet or film such as paper on both sides. It may be made from a laminated sheet or film laminated on the substrate. Further, the break perforations (4) provided along the joining line may be linear as in the illustrated embodiment, or may be corrugated, rectangular, or the like. However, even in this case,
The break perforation (4) needs to be provided at the overlapping portion with the second front wall (1b). In addition, packaged goods (8)
May be a sanitary napkin as in the illustrated embodiment, a disposable diaper or other sanitary article, a cosmetic article such as cosmetic cotton, or a food such as a tea bag, sprinkle, instant miso soup, or the like. In addition, the packaged item (8)
They may be individually mounted or may not be individually mounted.

[0017]

As can be seen from the above description, in the packaging bag with a sealing function according to the present invention, the first of the bag body is provided.
On the outer side of the front wall, the free end side of the second front wall is overlapped with a predetermined width at the free end side, and the leading edge of the first front wall located inside is joined and integrated with the second front wall, while Since a break perforation for opening the bag is provided along the joining line at the portion where the second front wall overlaps with the second front wall, the surface of the first front wall that is not overlapped with the second front wall can be held with one hand. While holding down, the other front side of the second front wall can be used to hold down the surface of the second front wall that is not overlapped with the first front wall, and the break perforation can be broken by pulling from both sides so as to tear the break perforation, It is also possible to break the break perforation by flipping up the overlapping portion of the second front wall and pushing through the break perforation of the first front wall with a fingertip. After taking out the desired number of items to be packaged from the packaging bag, the overlapping portion of the second front wall is overlapped on the first front wall as before, so that the opening is covered and hidden, so that the appearance can be maintained. In addition to what can be done, it is possible to prevent dust, dust and the like from being mixed.
Therefore, it is no longer necessary to individually package articles that had been individually packaged in order to ensure good hygiene, eliminating the steps and materials required for individual packaging, improving productivity and improving productivity. Cost can be reduced. In addition, before opening the bag, the break perforation provided on the first front wall is covered and covered by the overlapping portion of the second front wall, so that unintended opening of the bag which occurs during transportation or the like can be prevented. it can. Furthermore, since no closure member such as a closing string or a poly chuck is required,
The production process is simplified and productivity is further improved.
Appearance appearance is also good.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a packaging bag with a sealing function according to the present invention.

FIG. 2 is a view showing a part of a manufacturing process of the packaging bag.

FIG. 3 is a partially cutaway perspective view showing a state in which the packaging bag is filled with an article to be packaged.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view showing a state in which an article to be packaged is being removed from the packaging bag.

[Explanation of symbols]

 Reference Signs 1a 1st front wall 1b 2nd front wall 2 rear wall 3 Folding portion for gusset 4 Break perforation 5, 6, 7 ... Heat fusion line (joining line) 8 ... Packaged object

Claims (1)

[Claims] 1. A free end side of a second front wall (1b) is overlapped by a predetermined width on a free end side of a first front wall (1a) of a bag body, and a first front wall (inside) is located inside. While the leading edge of 1a) is joined and integrated with the second front wall (1b), the break perforation for opening the bag is formed along the joining line (5) at the overlapping portion with the second front wall (1b). (4) A packaging bag with a sealing function, which is provided.