JP2001180690A - Flexible packaging bag to be easily unsealed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flexible packaging bag formed of laminated resin films, to be easily opened by utilizing a three-side peeling type or a vertical sealing (standing pouch type) to tear off a cutting line 10 just by pulling with fingers hooked in an unsealing notch (b). SOLUTION: A cutting line 10 is formed of a V-shaped cut 1a with an open section facing an unsealing notch (b) direction and a cut 1b continued to the V-shaped cut 1a on an extension line of the unsealing notch (b) formed on a periphery of a hot sealing section 21 of the flexible packaging bag 20 with its peripheral section hot sealed. Also the cutting line 10 is formed of two V-shaped cuts 1a, 1a with opening section s facing unsealing notches (b), (b) direction and a cut 1b continued to the two V-shaped cuts 1a, 1a is formed on a line connecting two unsealing notches (b), (b) formed on the periphery hot sealing section 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-way seal type and a vertical seal (commonly referred to as a standing pouch) type for accommodating a wide variety of seasonings, foods, refill detergents and the like.
The present invention relates to a flexible packaging bag made of a laminated resin film that can be easily opened.

[0002]

2. Description of the Related Art Conventionally, a small three-sided seal type as shown in FIG. 2A for easily storing knobs and seasonings, a three-sided seal type as shown in FIG. Fig. 2 for storing fresh foods and refillable detergents
C, an opening notch b is provided in the peripheral heat sealing portion 21 such as a vertical seal (standing pouch) type shown in FIG. C, and two opening notches b, b are provided in the peripheral heat sealing portion 21.
A flexible packaging bag 20 made of a laminated resin film is generally widely used.

Conventionally, in order to facilitate opening of the soft packaging bag 20 shown in FIGS. 2B and 2C, a drawing connecting two opening notches b provided in the peripheral heat sealing portion 21 is shown in FIG. 3A
A flexible package made of a laminated resin film provided with linear cut lines 22 such as perforations shown in FIG. 3C and provided with a plurality of linear cut lines 22 such as perforations shown in FIG. 3C. A bag 20 is used.

[0004]

However, FIG.
A, B, and C, the opening notch b was provided in the peripheral heat sealing portion 21, and two opening notches b,
b, the flexible packaging bag 20 made of a laminated resin film can be easily opened simply by putting a finger on the opening notch b and pulling it apart.
However, with the demand for high preservability of the contents, a tear-resistant base film that maintains the physical strength of the flexible packaging bag, etc., and the peripheral portion of the flexible packaging bag are heat-sealed. When a multilayer special resin film, aluminum foil, tissue paper, etc. are laminated in addition to the sealant film to be sealed, tearing is difficult and the direction of tearing is not stable even if a finger is pulled on the opening notch b and pulled. Is the problem,
The contents were often spilled or their hands soiled due to difficulty in opening.

[0005] Further, on a conventional line connecting two opening notches b provided in the peripheral heat sealing portion 21 shown in FIG.
As for the flexible packaging bag 20 made of a laminated resin film provided with a linear cut line 22 such as a perforated shape, in addition to the base film and the sealant film described above, a multilayer special resin film, aluminum foil, tissue paper, etc. 2B and FIG. 2C, the tear line 22 can be easily torn and the tearing direction is also constant by merely putting a finger on the opening notches b and b and pulling them. Is a soft packaging bag 20 that facilitates opening of the flexible packaging bag 20 shown in FIG. However, the opening notches b, b provided simultaneously in the heat sealing step of sealing the peripheral portion of the flexible packaging bag by heat fusion and sealing, and the lamination process of the flexible packaging bag with the base film printing process or the sealant film, etc. There is a problem that the provided position does not completely coincide with the cut line 22 provided at the same time. As shown in FIG. 3B, even if a finger is put on the opening notch b, b and pulled, the opening notch b, b Since the cut line 22 where the positions provided do not match may not be torn, it is difficult to tear, and the tearing direction c, c is bent, making it difficult to open. Or something.

Further, a plurality of straight cut lines 22 and 2 such as a plurality of perforations are formed on a conventional line connecting two opening notches b and b provided in the peripheral heat sealing portion 21 as shown in FIG. 3C.
Flexible packaging bag 2 made of laminated resin film provided with 2, 22
For 0, the above-mentioned opening notches b, b and the cut line 2
2. Even if the positions of the two are not completely coincident with each other, simply tear the opening notches b, b with a finger and pull to tear any of the plurality of cut lines 22, 22, 22. Although it is an excellent flexible packaging bag 20 that is easy to open and has a constant tearing direction, a plurality of cut lines 22, 22, 22, 22, 22, provided at the same time in the above-described flexible packaging bag printing process and laminating process are provided. The problem of 22 is that the scanning distance of the carbon dioxide laser described later becomes long, the speed of the cut line forming step becomes slow and the productivity is poor, and when the cut line forming step is performed in-line, the printing step There is a problem that the speed of the lamination process and the like is also restricted, and the manufacturing efficiency is reduced.

An object of the present invention is to provide a flexible resin bag made of a laminated resin film, such as a three-way seal type or a vertical seal (standing pouch) type, which accommodates a wide range of seasonings, foods, refillable detergents, and the like. In the case where a multilayer special resin film, aluminum foil, tissue paper, or the like is laminated, the opening notch b does not always match the opening notch b even if the positions where the opening notch b and the cut line 10 are provided do not completely match. A flexible packaging bag that can be easily opened by simply putting a finger on and pulling the tear line 10 so that the speed of the printing process and the laminating process is limited and the production efficiency is not reduced. To provide.

[0008]

As shown in FIG. 1A, a flexible packaging bag according to the present invention, which is easy to open, is provided at a peripheral heat sealing portion 21 of a flexible packaging bag 20 whose peripheral portion is thermally sealed. On the extension line of the opening notch b, V whose opening portion faces the opening notch b
A flexible packaging bag which is easy to open, provided with a cut line 10 comprising a cut 1a in a V-shape (in FIG. 1A, a V-shape in a horizontal direction) and a cut 1b continuous with the V-shaped cut 1a. It is.

As shown in FIGS. 1B and 1C, the flexible packaging bag of the present invention, which can be easily opened, has two portions provided in the peripheral thermal sealing portion 21 of the flexible packaging bag 20 having the peripheral portion thermally sealed. On the line connecting the opening notches b, b, two V-shaped portions each having an open portion facing the opening notches b, b (in FIG.
(A diagonal V-shape in FIG. 1C), and a cut 1 continuous with the two V-shaped cuts 1a, 1a.
(b) is a soft packaging bag that is easy to open, characterized by providing a cut line (10) consisting of:

[0010]

According to the soft packaging bag of the present invention which can be easily opened,
As shown in FIG. 1A, on the extension line of the opening notch b provided in the peripheral heat sealing portion 21 of the flexible packaging bag 20 in which the peripheral portion similar to the conventional one shown in FIGS. By providing a cut line 10 composed of a V-shaped cut 1a whose opening portion faces the opening notch b and a cut 1b continuous with the V-shaped cut 1a, the peripheral heat sealing portion 21 1B and 1C on the line connecting the two opening notches b and b provided in FIG.
As shown in FIG. 2, two V-shaped cuts 1a, 1a each having an open portion facing the opening notch b, b, and a cut 1b continuous with the two V-shaped cuts 1a, 1a, 3B, even if the tearing directions c, c are bent by putting a finger on the opening notches b, b and pulling, as shown in FIG. Reaching the open V-shaped cuts 1a, 1a,
Next, from the vertices (bent portions) of the V-shaped cuts 1a, 1a,
The tear line 10 is always cut, and the cut line 10 is always cut.

That is, in response to a demand for a high degree of preservation of contents, a multilayer special resin film, an aluminum foil, a thin paper, or the like is laminated in addition to the base film and the sealant film described above. Opening notch b provided simultaneously in the heat sealing step of sealing the periphery of the flexible packaging bag by heat fusion and sealing, and V-shaped provided simultaneously in the printing step of the base film of the flexible packaging bag or the lamination step of the sealant film etc. Even if the positions of the cut lines 10 composed of the cut lines 1a and 1b do not completely coincide with each other, the cut lines 10 can be easily torn by simply putting a finger on the opening notch b and pulling it. It can be used to store a wide range of seasonings, foods, refillable detergents, etc., and can be opened with a laminated resin film, such as a three-way seal type or a vertical seal (standing pouch) type. It is possible to provide a such a soft packaging bag.

Further, in the flexible packaging bag which can be easily opened according to the present invention, the cut line 10 composed of the V-shaped cut 1a and the cut 1b provided simultaneously in the above-mentioned printing step or laminating step of the flexible packaging bag is used. Since the scanning distance of the carbon dioxide laser described later is short (compared to the linear cut lines 22, 22, 22, such as a plurality of perforations shown in FIG. 3C), the cut line forming step, the printing step, and the laminating step are performed. For example, it is possible to provide a flexible packaging bag that can be easily opened without limiting the speed and reducing the production efficiency.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the flexible packaging bag according to the present invention which is easy to open, a cut line 10 consisting of a V-shaped cut 1a and a cut 1b shown in FIGS. 1A, 1B and 1C is normally printed. On the base film that maintains the physical strength of the rolled, flexible packaging bag, at the same time as the printing process or following the printing process, for example, the inner angle of the bottom apex is formed by a thermal method using a carbon dioxide laser. A V-shape in which the open portion having an upper end distance of 3 to 6 mm at 45 to 75 degrees and facing the opening notch b direction (horizontal V-shape in FIGS. 1A and 1B, oblique V-shape in FIG. 1C)
And a perforated line 1 consisting of a normal perforated or semi-cut line 1b continuous with the V-shaped cut 1a. Then, a sealant film to be sealed is laminated.

In addition to the above-described base film and sealant film, in addition to the above-mentioned base film and sealant film, when a multilayer special resin film, aluminum foil, thin paper, or the like is laminated in accordance with a demand for a high degree of preservability of the contents, it is common to use The rolled base film printed with, and a multi-layered special resin film, aluminum foil, tissue paper, etc. are laminated, and in this laminating step simultaneously or subsequent to the laminating step, for example, a thermal treatment using a carbon dioxide laser. 1A, 1B, and 1C, and a mechanical method using a punching blade, if necessary, after forming the cut line 10 including the V-shaped cuts 1a and 1b shown in FIGS. And a sealant film for sealing the periphery of the flexible packaging bag by heat sealing.

In the case where a V-shaped cut line 1a and a cut line 1b shown in FIGS. 1A, 1B and 1C are provided by a thermal method using a carbon dioxide laser, the sealant film described above is used. The lamination may be performed after lamination. In the thermal method using a carbon dioxide laser, the processing depth of the cuts 1a and 1b can be easily adjusted. The cuts 1a and 1b up to a predetermined layer can be provided stably.

Further, a cut 1b such as a normal perforated or semi-cut continuous to the above-mentioned V-shaped cut 1a is generally a straight line as shown in FIGS. 1A, 1B and 1C. However, it is not always necessary to stick to a straight line. For example, in consideration of a design shape of a soft packaging bag and an opening shape that is easy to pour out when opening, an arbitrary curved cut 1b is provided. Can be.

[0017]

<Embodiment 1> FIG. 1A is a plan view of a soft packaging bag that can be easily opened in Embodiment 1 of the present invention. That is, in the flexible packaging bag 20 in which the peripheral portion is heat-sealed, the opening is formed by the opening notch b on the extension line of the linear opening notch b (commonly referred to as I notch) provided in the peripheral heat sealing portion 21. A V-shaped cut 1a (a horizontal V-shaped cut having a vertex having an inner angle of 60 degrees and a distance between both ends of 3 mm) and a V-shaped cut 1
A liquid soup for a cup ramen and a non-drying utensil, provided with a cut line 10 consisting of a perforated cut 1b provided linearly with a length of 40 mm continuous to a, shown in FIG. 1A 80x52 vertical and horizontal, three-way seal
mm is a soft packaging bag that can be easily opened.

The method of manufacturing a flexible packaging bag which can be easily opened as shown in FIG. 1A is as follows. As a base film, a conventional printed roll-up shape is used. The V-shaped cut 1a and this V
Perforated cut 1b continuous with letter-shaped cut 1a
And biaxially stretched nylon (O
Ny, 15μm), sand polyethylene (SPE, 20μm) and aluminum foil (Al, 7μm), as a sealant film, laminated with sand polyethylene (SPE, 20μm) and linear low-density polyethylene (LLDPE, 35μm) After slitting into a roll having a width of 104 mm, the peripheral portion is heat-sealed and sealed while accommodating the contents in the same usual filling and heat sealing process as before, and the filling and heat sealing are performed. At the same time in the process, a linear opening notch b was provided at a predetermined place to prepare a soft packaging bag of Example 1 which was easy to open.

In the flexible packaging bag of this embodiment, which can be easily opened, in addition to the above-mentioned base film and sealant film, despite being laminated with sand polyethylene and aluminum foil, a linear opening notch is provided. b and the perforated cut 1b provided on the base film, although the provided position did not match within the range of ± 0.8 mm, by the action of the aforementioned horizontal V-shaped cut 1a, Just pull your finger on the opening notch b and pull it.
A cut line 10 composed of a character-shaped cut 1a and a cut 1b
A three-sided sealable, easy-to-open flexible packaging bag was obtained.

<Embodiment 2> FIG. 1B shows Embodiment 2 of the present invention.
3 is a plan view of a soft packaging bag that can be easily opened. That is, on a line connecting two laterally V-shaped opening notches b and b (commonly referred to as V notches) provided in the peripheral heat sealing portion 21 of the flexible packaging bag 20 whose peripheral portion is heat sealed, Two V-shaped cuts 1a, 1a, each having an open portion facing the opening notch b, b (b-shaped V-shape with the inner angle of the vertex being 60 degrees and the distance between both ends being 5 mm), and the two V-shaped cuts FIG. 1B for accommodating delicacies such as almonds and mixed nuts provided with a cut line 10 composed of a perforated cut 1b provided linearly with a length of 64 mm continuous with the cuts 1a, 1a. 120x8 vertical and horizontal, three-sided seal type shown in
It is a soft packaging bag that can be easily opened by 6 mm.

FIG. 1B shows a method of fabricating a flexible packaging bag which is easy to open. V-shaped cuts 1a, 1a,
A biaxially stretched nylon (ONy, 15 μm) provided with a cut line 10 composed of a perforated cut 1b continuous with the V-shaped cut 1a, 1a, and a sealant film,
After laminating sand polyethylene (SPE, 20 μm) and linear low-density polyethylene (LLDPE, 35 μm) and slitting it into a rolled shape having a width of 240 mm, the same filling and heat sealing processes as in Example 1 were performed. The peripheral portion is heat-sealed and sealed while accommodating the contents, and two laterally V-shaped opening notches b, b are provided in predetermined places at the same time in the filling and heat sealing processes. The flexible packaging bag of Example 2 which was easy to open was prepared.

In the flexible packaging bag which is easy to open according to the present embodiment, the positions provided between the two opening notches b and b in the V-shape and the perforated cuts 1b provided in the base film are provided. Even though they did not match within the range of ± 1.4 mm, the fingers were put on the opening notches b and b by the action of the above-mentioned lateral V-shaped cuts 1a and 1a as in the first embodiment. A three-sided sealable, easy-to-open flexible packaging bag capable of easily tearing a cut line 10 composed of V-shaped cuts 1a, 1a and cut 1b only by pulling,
Since the scanning distance of the carbon dioxide laser of the perforated cut 1b provided in the base film is short (compared to the linear cut lines 22, 22, 22 such as a plurality of perforated cuts shown in FIG. 3C), It was possible to obtain a flexible packaging bag that can be easily opened without limiting the speed of the score line forming step and reducing the production efficiency.

<Embodiment 3> FIG. 1C shows Embodiment 3 of the present invention.
1 is a perspective front view of a soft packaging bag that can be easily opened. That is, of the soft packaging bag 20 whose peripheral portion is heat-sealed,
On the line connecting two oblique V-shaped opening notches b, b provided on the peripheral heat sealing portion 21, two V-shapes (opening notches b, b) of which opening portions are respectively directed in the direction of the opening notches b, b. Cuts 1a, 1a at an oblique V-shape with an inner angle of 50 degrees and a distance between both ends of 4 mm
And a 550 ml refillable liquid detergent containing a cut line 10 consisting of a semi-cut 15 b having a length of 15 mm continuous with the two V-shaped cuts 1 a, 1 a. The bottom width, width and height of the vertical seal (commonly referred to as a standing pouch) shown in FIG. 1C are 62 × 124 × 2.
It is a soft packaging bag that can be easily opened at 00 mm.

FIG. 1C shows a method of manufacturing a flexible packaging bag that can be easily opened. First, as a base film, a rolled biaxially stretched polyester film (O-PET,
0 μm), V-shaped cuts 1a, 1a and 1b are formed in the same manner as in Example 1 (however, continuous semi-cuts are used instead of the perforated cuts of Example 1). And a biaxially stretched nylon film (O-Ny,
15μm), the vapor-deposited surface is laminated to the biaxially stretched polyester film side, and a linear low density polyethylene film (LLDPE, 35μm) is further laminated on the biaxially stretched nylon film surface of the laminate by a dry lamination method. Lamination was performed to prepare a laminated film for the main body of the packaging bag. Next, a separately prepared two-fold bottom member 25 is supplied between the slit laminated films, and the bottom and side portions of the packaging bag and a portion serving as a content filling port (the upper flat portion 2 in FIG. 1C).
7) is heat sealed at the upper part except for the part, cut into a predetermined width, and the upper left part is punched into the shape of the illustrated discharge nozzle 23;
At the tip of the pouring nozzle 23, two oblique V-shaped opening notches are provided at positions corresponding to the cut lines 10 formed by the V-shaped cuts 1a, 1a and 1b provided in the laminated film. (b) and (b) were provided, and a pouch provided with a content filling port was obtained. This pouch was filled with the contents from the above-mentioned contents filling port, and the contents filling port was heat-sealed to produce a flexible packaging bag of Example 3 which was easy to open.

In the flexible packaging bag which is easy to open according to the present embodiment, in addition to the above-described base film and sealant film, despite the fact that a biaxially stretched nylon film is laminated, two oblique V-shaped portions are formed. Opening notch b, b
And the semi-cut cut 1b provided in the base film,
Although the provided position does not coincide within the range of ± 1.2 mm, the above-described oblique V-shaped cuts 1a, 1a
The opening notch b, as in the first and second embodiments,
Simply put your finger on b and pull it to make a V-shaped cut 1 easily
A flexible packaging bag of a vertical seal (standing pouch) type, which can be easily opened, capable of tearing the cut line 10 composed of a, 1a and the cut 1b was obtained.

It should be noted that the conventional 550 m
For a soft packing bag of a vertical seal (standing pouch) type (not shown) containing a liquid detergent for refilling of l, in order to have the opening nozzle 23 cut with scissors and opened when used, V-shaped cut 1 of opening nozzle 23
A scissors picture and a cut line were simply printed at the position of the cut line 10 composed of a, 1a and the cut 1b.

[0027]

As described above, according to the operation and the embodiment, in the flexible packaging bag of the present invention which is easy to open, the peripheral thermal sealing portion of the flexible packaging bag 20 in which the peripheral portion is thermally sealed as in the conventional case. A cut line 10 composed of a V-shaped cut 1a whose opening is directed to the direction of the opening notch b, and a cut 1b continuous with the V-shaped cut 1a on an extension of the opening notch b provided at 21. Is provided, and two V-shaped open portions are respectively directed to the opening notches b, b on the line connecting the two opening notches b, b provided in the peripheral heat sealing portion 21. The cuts 1a, 1a and the two V-shaped cuts 1a, 1
In the case where a multi-layered special resin film, aluminum foil, tissue paper, or the like is laminated by providing a cut line 10 consisting of a continuous cut 1b and a cut position 1b, Is not completely coincident with each other, the tear line 10 composed of the V-shaped cut 1a and the cut 1b can be easily torn by merely putting a finger on the opening notch b and pulling it. The speed of the printing process and the laminating process, such as the three-way seal type and the vertical seal (standing pouch) type, which accommodates a wide range of ingredients, foods, refill detergents, etc., is not limited, and the production efficiency does not decrease A soft packaging bag that can be easily opened can be provided.

[Brief description of the drawings]

1A, 1B, and 1C show Embodiments 1 and 2 of the present invention;
Plan view of a soft packaging bag that can be easily opened in Example 3;
It is a perspective front view.

FIGS. 2A, 2B, and 2C are a plan view and a perspective front view, respectively, of a conventional soft packaging bag 20 made of a laminated resin film in which an opening notch b is provided in a peripheral heat sealing portion 21.

FIGS. 3A, 3B, and 3C show two parts provided on a peripheral heat sealing part 21;
FIG. 9 is a partial plan view of a conventional soft packaging bag 20 made of a laminated resin film, in which a linear cut line 22 such as a perforation is provided on a line connecting opening cutouts b, b at a location.

[Explanation of symbols]

 1a ... V-shaped cut 1b ... cut 10,22 ... cut line 20 ... soft packaging bag 21 ... peripheral heat sealing part 23 ... opening nozzle, pouring nozzle 25 ... bottom member 27 ... top flat part b ... opening notch c ... tearing direction

Claims (2)

[Claims] 1. A V-shaped opening portion of a flexible packaging bag 20 whose peripheral portion is heat-sealed, the opening portion of which extends in the direction of the opening notch b on an extension of the opening notch b provided in the peripheral heat sealing portion 21. A break 1a,
A flexible packaging bag that is easy to open, characterized in that a cut line 10 consisting of a cut 1b continuous with the V-shaped cut 1a is provided. 2. Opening notches b, b of a flexible packaging bag 20 whose peripheral portion is heat-sealed, connecting two opening notches b, b provided in the peripheral heat-sealing portion 21, respectively. An opening characterized by providing a cut line 10 comprising two V-shaped cuts 1a, 1a facing in the direction b and a cut 1b continuous with the two V-shaped cuts 1a, 1a. A flexible packaging bag that is easy.