JPS6031705B2 - packaging bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a synthetic resin bag for packaging articles.

The purpose of the present invention is to store the contents of the bag because the tearing means conventionally used for the bag is unsuitable because it impairs the sealing performance (airtightness, etc.) of the bag, as described below. We have improved the defects that have limited its application to packaging bags that can store and hold a variety of contents properly, making them easier to open without compromising the quality of the contents. be.

A further object of the present invention is that a coughing device made of synthetic resin that can be opened and closed and formed at the mouth of the bag in order to properly store and hold the contents can be used horizontally for the purpose of shaking and pressurizing during transportation. Eliminate the inconvenience of sliding, causing the cough to come loose and the contents to be scattered.
The purpose is to prevent the sliding of the carrying tool by providing a means on the bag body. Furthermore, as another object of the present invention, even after the bag is opened by various tearing means and a portion of the contents are taken out, the bag is still securely sealed for additional quality protection of the remaining contents. To provide a packaging bag capable of maintaining sealing performance.

Normally, materials such as synthetic resin single-layer films or various laminated films are selected as materials for bags for packaging goods, depending on the contents to be stored, in an effort to adequately protect the contents. There is.

Bags made of synthetic resin films or various laminated film materials are generally difficult to open.
When opening such a bag, check the perforations and thin walls (
Type where the planned tear area is thinner than the thickness of the bag film)
Various tearing methods have been used, including a shaped cut line.

However, if this tearing method is applied to a bag containing perforated or thin-walled contents that require airtightness, gas will permeate through the cut line, resulting in poor quality of the contents. This may lead to harmful effects such as deterioration,
There has been a problem in that synthetic resin films and various laminated film materials are no longer able to provide the desired airtightness. In addition, the type of closure that has perforations or notches leaves the bag open, and is naturally not suitable for storing fluid contents, and is not suitable for storing powder or granular materials. However, depending on the size of the hole, it may not be preferable.

Furthermore, if a difficult-to-tear material is attempted to be easily torn by a pulling means, the tearing means will tear when subjected to impact during transportation, display, and sales. Not only does it have a built-in risk of the contents being scattered, but there is also a limit to how easily it can be torn. Under these circumstances, in the past, with the exception of certain items, attention was paid to preserving the quality and storage of the contents, making it difficult to apply tearing methods that were not particularly easy to tear or to tear in a predetermined direction. However, there are many disadvantages, such as making a V-shaped cut, which is easy to find the clue to opening, or the manufacturing process is complicated and expensive, and it is not practical. In the end, they had no choice but to rely on irons and knives to open the package.

Furthermore, if the contents stored in the bag are to be used all at once, there is no problem, but if the bag is to be used several times, it is prohibited to leave the bag unsealed after tearing it open. The disadvantage is that if you leave it out, the contents will deteriorate.

The present invention aims to solve the various problems with packaging bags as described above, and to provide a bag that facilitates opening of the bag and is suitable for storing and retaining contents and preserving quality. Embodiments of the present invention will be described below based on the drawings. In the drawings, reference numeral 1 denotes a bag made of a synthetic resin single-layer film or various laminated film materials, and a synthetic resin bag 2 that can be opened and closed is formed in the closing part of the bag.

In the bag body 1 having such a coughing device 2, a removable sealing portion 4 is provided above the coughing device 2 in parallel with the coughing device 2, and above the packing portion 4 with the knob portion 5 remaining. A tearing means 3 for opening the package is provided. This sealing part 4 is formed by heat sealing, part coating agent, hot melt, pressure sensitive adhesive, etc., and the adhesive strength is sufficient to maintain the airtightness of the bag. In addition, it is preferable to use a material that can be peeled off with a force equal to or less than the cough resultant force of the cough implement 2. The sealing section 4 is formed along the entire length of the entrance section of the bag body 1. In addition, the tearing means 3 for opening may be any suitable means, taking into account the difficulty of pulling the bag material, but the ease of tearing, the ability to tear in a predetermined direction, and the ease of the forming means are important. Considering this, a perforated or thin-walled cut line is preferable.

In particular, the tear resistance of perforated cut lines can be freely changed mechanically by changing the perforation pitch, etc., and compared to other tearing methods, it does not require as much precision in forming, making it less complicated. This is preferable because there is no problem, the manufacturing cost is low, and a stable product can be produced.
However, as is well known, perforated cut lines are naturally unsuitable for use in bags that require airtightness, since they allow air to pass through the perforations. but,
According to the present invention, the airtightness of the bag body is ensured by the sealing section 4 even with perforated (or thin-walled) cut lines, so there is no problem with ventilation from the perforations (or thin walls). It is something that should not be done. In other words, according to the present invention, perforated cut lines, which were completely out of the question for ensuring airtightness, can be cut using aluminum foil, which is commonly used to improve the airtightness of bags. It can also be used for bags made of laminated film material that has one of its material compositions.
Since the opening □ can be easily torn and the quality of the contents will not be affected, the tearing means can be formed with the primary focus on ease of tearing. Furthermore, when the sealing part 4 is formed with a pressure-sensitive adhesive, that is, the sealing part 4
If it is made removable and resealable, the airtightness can be maintained even after opening by removing a part of the contents, closing the cough fitting 2, and re-adhering the sealing part 4. It is.

Next, the sealing section 4 is provided with a sealing function for the above-mentioned purpose, that is, maintaining airtightness, but is not provided with a sealing machine housing for storing and holding various contents.

Therefore, in order to provide the woven portion 4 with the strength necessary to store and hold the contents, it is necessary to strengthen the degree of adhesion of the woven portion 4. However, strengthening the sealing portion 4 makes it difficult to peel off the seal, making it difficult to close the bag body 1. Regarding this point, in the present invention, the coughing device 2 is provided below the woven part 4, so that the contents are stored and held by the coughing device 2. This degree of odor 2 is not suitable for airtightness and watertightness, but as mentioned above, there is no problem with airtightness due to the sealing part 4, and with regard to watertightness, it is not suitable for airtightness and watertightness. Since only a limited amount of material is present between the narrow and medium-sized cough fitter 2 and the sealing part 4, it does not act as a force to peel off the sealing part 4, so the sealing part 4 is sure to block it. It will not be released outside. In addition, in the case of the conventional bag body with a coughing device, the coughing device 2 tends to slide in the relative direction in the longitudinal direction due to various pressurizations, and an inadvertent barrier is likely to occur. In such a case, the woven part 4 not only functions as described above, but also functions as a stopper for the sliding of the coughing device 2, thereby preventing the coughing device 2 from touching the mouth unnecessarily. In other words, this property has been functionalized to prevent lateral sliding in grade 2, with the property that the adhesive has removability and is weak in one direction, but is strong in other directions. be. Since the present invention has the above-mentioned structure, the sealing part 4 covers the entire closing part of the bag 1 between the tightening tool 2 and the tearing means 3 as shown in FIGS. 1 and 3 before opening. Therefore, even if the tearing means 3 is breathable, the sealing section 4 reliably blocks ventilation from inside and outside.
For example, it is effective for storing internal items that require a high degree of airtightness, such as nitrogen filling, and it can also be used to store things such as liquids.

In other words, the cough fitter 2 and the sealing section 4 provided above the cough fitter 2 and in parallel with the cough fitter 2 ensure the proper storage and retention of contents and quality preservation functions required of the bag body 1. Therefore, it is possible to adopt a tearing method that focuses on ease of tearing.

Next, when opening the bag 1 having the above structure, as shown in FIG. 2, the upper end of the bag 1 is cut off using the tearing means 3, thereby creating a tab 5 above the sealing part 4.

When this knob part 5 is picked up with the fingertips and spread in the left and right direction perpendicular to the direction of the bonding line of the sealing part 4, the sealing part 4 is first peeled off, and then the degree tool 2 can be opened. And the woven part 4
If the bag is made removable so that it can be resealed, the airtightness of the bag can be maintained for several times by closing the sealing tool 2 after opening and then resealing the sealing part 4. As described above, according to the present invention, there is provided a coughing device, a removable adhesive sealing portion that seals the entire middle direction of the entrance section provided above the coughing device, and an opening portion provided above the sealing portion. The three parties working together to solve the various problems with conventional packaging bags, without impairing the contents storage and quality preservation functions required of bags. It is possible to provide a bag that is easy to open, and has great practicality.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the invention. FIG. 1 is a front view before opening, FIG. 2 is a front perspective view in an unsealed state, and FIG. 3 is a sectional view taken along the line m in FIG. 1. 1...
Bag body, 2...Coughing tool, 3...Tearing means, 4
... Closing section, 5 ... Picking section. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. In a bag having a synthetic resin articulating tool that can be opened and closed at the opening, a peelable adhesive sealing part is provided above the articulating tool in parallel with the articulating tool and sealing the entire width of the opening. A packaging bag, further comprising a tearing means for opening the bag above the adhesive sealing part.