JPS6238920Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention aims to provide a packaging bag that is easy to open and is suitable for storing and retaining contents and preserving quality.

BACKGROUND ART Conventionally, packaging bags have usually been provided with their openings sealed in order to store and retain the contents and preserve quality. If such a bag is not properly sealed, the contents may spill out or the quality of the contents may deteriorate. Therefore, a secure seal was created, but this secure seal made it extremely difficult to open (peel) the bag.

Generally speaking, bags made of synthetic resin films or various laminated film materials are difficult to tear and open, and various tearing means have been used to facilitate the opening of such bags. However, these various tearing means generally tend to have parts that are difficult to tear due to uneven formation of the tearing means, and conversely, they tend to tear too easily, causing the contents to tear when subjected to impact pressure during transportation, display and sales, etc. Since it has the disadvantage of scattering objects, precision and uniformity are required in the molding, which inevitably leads to higher costs.
Furthermore, most of the tearing means that have been put into practical use in the past impair the airtight function of the bag, and are not preferred for protecting the quality of the contents. For example, there is a bag shown in Utility Model Publication No. 38-17167 as one of the bags equipped with a tearing means, but this kind of tearing means uses a thin film to make it easier to open, and as a result, the thin part This allows more oxygen and moisture to pass through, leading to deterioration of the contents over time. Therefore, although it can be applied when storing contents that do not require an airtight function, when it is required, one has to rely on the inconvenient method of opening the strong seal with scissors or a knife. The reality was that it was not possible.

The present invention solves the above-mentioned problems with conventional packaging bags, and provides a packaging bag that is easy to open and has the functions required for a bag to store and retain the contents and preserve quality. Examples thereof will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a bag made of a single-layer synthetic resin film or various laminated film materials, and from one side end of the bag to the other, a little inside the bag from the opening edge of the opening. A sealing part 2 is provided over the entire area of the opening extending to the body side end, and the inner surface of the bag is adhered to the inner surface of the bag with a suitable width so as to be easily peeled off. This easily peelable sealing part 2 is formed by, for example, heat sealing, part coating agent, hot melt, pressure sensitive adhesive, etc., and the bag body 1 is kept airtight by this sealing part 2.

In the present invention, a bag 1 having such an easily peelable sealing part 2 is provided with a synthetic resin articulating tool 3 that can be opened and closed in parallel with the sealing part 2 and located slightly below the sealing part 2. This is because the sealing part 2 is designed to be easily peeled off as described above in order to facilitate opening of the bag 1. This is because there is a risk that the seal may peel off, or if it is subjected to shock pressure during transportation or display sales, the seal may peel off and the contents may be scattered. In order to prevent the pressure from acting on the sealing part 2, the articulating tool 3 installed close to and slightly below the sealing part 2 absorbs the pressure.In other words, the present invention takes advantage of the fact that easy peeling does not equate to lack of airtightness. By focusing on the above-mentioned structure, even though it is easy to peel off, it is possible to maintain sufficient airtightness. This problem was solved by bringing the .

Furthermore, although this articulating tool 3 is not suitable for cases where the articulating tool is required to be airtight or watertight, the provision of the sealing part 2 as described above does not reduce the problem of airtightness. Moreover, even though the articulating tool itself does not have sufficient watertightness, only a limited amount of water passes through the occlusal gap of the articulating tool 3 and flows into the space between the articulating tool 3 and the sealing part 2. ,
Since the force is not sufficient to peel off the sealing part 2, even if some fluid passes through the articulation tool 3, it is reliably blocked by the sealing part 2 and does not leak to the outside.

Furthermore, in the case of a conventional bag body with an articulating tool, the articulating tool 3 may slide in the longitudinal direction due to various types of pressure, resulting in an inadvertent opening, but in the present invention, In such a case, the sealing part 2 not only functions as described above, but also functions as a stopper for the sliding of the articulating tool 3, thereby preventing the articulating tool 3 from opening unnecessarily.

In other words, this property of the adhesive being weak in peel strength in one direction but strong in other directions is functionalized in order to prevent the occlusal tool 3 from sliding laterally.

In addition, when the sealing part 2 is formed with a pressure-sensitive adhesive, a part of the contents is taken out, the articulating tool 3 is closed, and then the sealing part 2 is sealed again over the entire opening. Airtightness etc. can be maintained again.

Since the present invention has the structure as described above, the sealing part 2 glued with an appropriate width covers the entire opening of the bag body 1 before opening, as shown in FIGS. 1 and 2. Since the sealing portion 2 reliably blocks ventilation from inside and outside, it is also effective for storing contents that require a high degree of airtightness, such as nitrogen filling. In addition, since the locking tool 3 ensures the function of storing and retaining the contents required of the bag body 1, the bag body 1 is designed to be easy to open, and the airtightness of the bag body 1 is maintained within the minimum range. The sealing part 2 can also be made to have a structure that is extremely easy to peel off.

Furthermore, in addition to the above-mentioned function, the sealing part 2 also functions as a stopper to prevent the articulating tool 3 from sliding laterally, thereby allowing the contents to be stored and held more properly.

Next, when opening the bag 1 having the above structure, by pulling left and right the part of the bag that corresponds to the ear between the opening edge of the opening of the bag 1 and the sealing part 2.
The sealing part 2 can be peeled off with a small amount of force, and the contents can be easily removed by pulling it left and right to release the engagement of the articulating tool 3.

If the sealing part 2 can be resealed with a pressure-sensitive adhesive or the like, in order to preserve the contents that remain even after the seal is opened and put into service, the articulation tool 3 is closed and the sealing part 2 is resealed. Subsequently, the airtight function of the bag 1 is maintained as much as possible.

As described above, according to the present invention, the easy-to-peel sealing part 2 that satisfies the airtight function is provided inside the bag body slightly below the opening edge, and the engagement tool is provided slightly below the sealing part, thereby making it possible to remove the sealing part 2 from the conventional packaging. We have solved various problems with bags, without compromising in the slightest the ability to store and retain the contents and preserve quality, which are required of bags.
It is possible to provide a packaging bag that can be easily opened.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view, and FIG. 2 is an enlarged sectional view taken along the line A--A in FIG. 1. 1... Bag body, 2... Sealing part, 3... Articulating tool.

Claims (1)

[Scope of utility model registration request] At the opening of a bag formed of a single layer synthetic resin film or various laminated film materials, from one bag side end to the other bag side end a little inside the bag from the opening edge of the opening. The inner surface of the bag body is provided with a sealing part having an appropriate width and easily peelable adhesive over the entire area of the opening, and a synthetic resin articulation device that can be opened and closed is provided slightly below the sealing part. A packaging bag.