JP2003137308A - Easy-to-unseal flexible packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-unseal flexible packaging bag for storing a variety of spices, food, refill detergents or the like in a form such a three-side sealed or vertical sealed (standing pouch) bag, on which a conventional I-shaped or V-shaped start-to-tear notch (d) is not provided and there is no fear of a torn direction curving. SOLUTION: The easy-to-unseal flexible packaging bag 20 comprises at least a base film layer 2 and a sealant layer 4 which are stacked and thermally welded along their peripheries. A start-to-cut flaw (a) passing through at least the base film layer 2 is made on the peripheral welded portion 21. In addition, a continue-to-cut flaw (b) passing only through the layer 2 is successively made on a portion which is not thermally welded on an extension of the flaw (a). Further, a cut (c) passing through all of the layers is provided from ends to the middle of the portion 21 instead of the flaw (a).

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a three-way seal type or a vertical seal type (commonly referred to as a standing pouch) for accommodating a wide range of spices, foods, refill detergents, etc.
The present invention relates to a flexible packaging bag which is not provided with a conventional cut start notch d such as an I-shape or a V-shape and is easy to open without fear of bending the tearing direction.

[0002]

2. Description of the Related Art Conventionally, at least a base film layer 2 and a sealant layer 4 are laminated from the outer surface side, and if necessary, a barrier layer 3 and the like are laminated in the middle, and the peripheral portion is heat-sealed. 2A, which is a soft packaging bag 20 of a slightly smaller size such as a three-sided seal type that easily stores knobs, spices, and the like. The cut start cutout d is provided, and the non-heat-bonded portion on the extension line of the cut start cutout d of the flexible packaging bag 20 penetrates only the base film layer 2 and has a broken line shape.
A soft packaging bag that is easy to open and that has been subjected to continuous continuous cutting processing b of a solid line (also referred to as a perforation) is widely used.

Further, conventionally, at least the base film layer 2 and the sealant layer 4 are similarly laminated from the outer surface side,
If necessary, a barrier layer 3 or the like may be laminated in the middle,
The soft packaging bag 20 shown in FIG. 2B, which is formed by heat-sealing the peripheral portion and widely stores confectioneries, foods, etc., such as a normal three-sided seal type, also stores seasonings, refill detergents, and the like. 2D shows a flexible packaging bag 20 such as a vertical seal type (standing pouch) with a spout shown in FIG. 2D, which is provided at two opposite positions of the peripheral heat-sealing portion 21 (of the spout) of the flexible packaging bag 20. , V-shaped cutting start notches d 1 and d 2 are provided, and only the base film layer 2 is penetrated into the non-heat-bonded portion on the line connecting the cutting start notches d 1 and d 2 of the flexible packaging bag 20, A soft packaging bag that has been subjected to a continuous cutting process b with a broken line or a solid line and that is easy to open is widely used.

[0004]

However, as shown in FIG.
Regarding the flexible packaging bags shown in A, B, and D that are easy to open,
Put your finger on the cut start cutout d such as I-shape or V-shape,
Although it is a soft packaging bag 20 that can be easily opened by cutting the broken continuous or continuous line cutting continuous b by simply tearing it slightly, heat fusion of the peripheral portion of the soft packaging bag 20 is possible. Simultaneously with the process, a cutting start notch d such as an I-shape or V-shape provided by a mechanical method such as a metal blade, a printing process of the base film layer 2 of the flexible packaging bag 20 and a laminating process of the sealant layer 4 Before and after, etc., use a mechanical method such as a metal blade or a thermal method such as carbon dioxide gas laser to perform continuous cutting on a broken line or a solid line. ) Is not a problem, for example, as shown in FIG.
Even if you put your finger on it and tear it, the continuous cutting process b that is not in the same position (continuous) may not be cut, and the direction in which it is torn is bent, making it difficult to open the flexible packaging bag 20. Often, the contents were spilled or the hands were soiled.

Therefore, an object of the present invention is to provide a conventional I type, such as a three-way seal type or a vertical seal type (standing pouch), which accommodates a wide range of spices, foods, refill detergents, and the like.
Instead of the cutting start notch d having a V-shape or the like, the position on the extension line or the connecting line is completely matched, and at least the base film layer 2 (and the barrier layer 3) is left, leaving the sealant layer 4. The cutting start scratch processing a and the continuous cutting scratch processing b that penetrates only the base film layer 2 are continuously applied, and at least all layers of the base film layer 2 and the (barrier layer 3) and the sealant layer 4 are formed. To provide a flexible packaging bag that is easy to open and that has a cutting process c that penetrates through the cutting process, a cutting start scratching process a, and a cutting continuing scratching process b described above that are continuously applied and that does not have a risk of bending in a tearing direction. It is in.

[0006]

The flexible packaging bag according to the present invention, which is easy to open, has at least a base film layer 2 and a sealant layer 4 from the outer surface side as shown in FIGS. 1A and 1B. A flexible packaging bag 20 having various shapes (three-sided seal type in FIG. 1A) formed by stacking and laminating the peripheral portion, and the sealant layer 4 is provided on the peripheral thermal fusion bonding portion 21 of the flexible packaging bag 20. The cutting start scratch processing a in the form of a solid line or a broken line (broken line in FIG. 1A), which penetrates at least the base film layer 2 and leaves the non-extension line of the cutting start scratch processing a of the flexible packaging bag 20. In the heat-sealing portion, a continuous cutting process b of a broken line or a solid line (broken line in FIG. 1A) penetrating only the base film layer 2 is continuously applied to the cutting start scratch process a. It is a flexible packaging bag that can be easily opened.

In the flexible packaging bag of the present invention according to claim 1, which is easy to open, the base having excellent tear strength and the like, leaving the sealant layer 4 on the peripheral heat-sealing portion 21 of the flexible packaging bag 20. A solid line or broken line cutting start scratch processing a that penetrates the film layer 2 is applied, and also to the non-heat-sealed portion on the extension line of the cutting start scratch processing a of the flexible packaging bag 20,
By continuously performing the continuous cutting process b, which is a broken line or a solid line, which penetrates only the base film layer 2 having excellent tear strength, the cutting start scratch process a is continuously performed to start a continuous line or a broken line. Simply by putting your finger on the scratch processing a and tearing it slightly strongly, you can easily continue cutting with a broken line or solid line b
Cutting start scratch processing a which penetrates at least the base film layer 2 with the sealant layer 4 left, which can be easily opened and easily opened, and whose positions on the extension line completely match, and only the base film layer 2 It is possible to provide a flexible packaging bag that can be easily opened without fear of bending in the tearing direction because the continuous cutting process b through which the continuous cutting is performed is continuously applied.

Further, in the soft packaging bag of the present invention according to claim 1, which is easy to open, the sealant layer 4 having excellent sealing property is left on the peripheral heat-sealing portion 21 of the flexible packaging bag 20. Since the cutting start scratch processing a which penetrates at least the base film layer 2 is applied, there is no problem in the sealing property of the peripheral heat-sealing portion 21 of the flexible packaging bag 20, and the unsealing excellent in the storage property of the contents can be performed. An easy flexible packaging bag can be obtained.

The flexible packaging bag according to the second aspect of the present invention, which is easy to open, has at least the base film layer 2 and the sealant layer 4 laminated from the outer surface side as shown in FIGS. A flexible packaging bag 20 of various shapes (three-sided seal type in FIG. 1C) formed by heat-sealing parts, and a sealant layer 4 is provided at two opposite positions of a peripheral heat-sealing portion 21 of the flexible packaging bag 20. Leaving at least the base film layer 2 through, a solid line-shaped or broken line-shaped (solid line in FIG. 1C) cutting start scratch processing a 1, a is performed, and also the cutting start scratch processing a 1, a of the flexible packaging bag 20 is tied. The non-heat-bonded portion on the line penetrates only the base film layer 2 and has a broken line shape or a solid line shape (see FIG. 1C).
Then, the continuous cutting flaw b) (broken line)
, a is a flexible packaging bag that is easy to open and is characterized by being applied continuously to a.

In the soft packaging bag according to the present invention, which is easy to open, in at least the tear strength, leaving the sealant layer 4 at the two facing portions of the peripheral heat-sealing portion 21 of the flexible packaging bag 20. And the like, which have penetrated through the base film layer 2 having excellent cutting start scratch processing a 1, a 2 in the form of a solid line or a broken line, and also non-heat fusion bonding on the line connecting the cutting start scratch processing a 1, a of the flexible packaging bag 20. A continuous continuous cutting process b, which is a broken line shape or a solid line shape, which penetrates only the base film layer 2 having excellent tear strength, is continuously applied to the cutting start scratch processing a 1 and By simply putting a finger on the broken-line cutting start scratch processing a 1 and a and tearing it slightly strongly, the broken-line or solid-line continuous cutting processing b can be easily cut, and can be easily opened and knotted. Sea run, where the positions on the line are exactly the same Since the cutting start flaw processing a 1, which penetrates at least the base film layer 2 except the layer 4 and the continuous cutting flaw processing b which penetrates only the base film layer 2 are continuously applied, the tearing direction is curved. It is possible to provide a flexible packaging bag that is easy to open without fear of being damaged.

The soft packaging bag according to claim 3 of the present invention which is easy to open is the flexible packaging bag according to claim 1 or 2 which is easy to open as shown in FIGS. 1C and 1D. Cutting start scratch processing a from the edge of the flexible packaging bag 20 to the middle of the peripheral heat-sealing portion 21 (in FIGS. 1C and 1D, cutting start scratch processing a,
Instead of a), a solid line cutting process c (cutting processes c 1 and c 2 in FIGS. 1C and 1D) that penetrates at least all layers of the base film layer 2 and the sealant layer 4 is performed. It is an easy-to-use flexible packaging bag.

In the flexible packaging bag according to the present invention, which is easy to open, in place of the cutting start flaw processing a from the edge of the flexible packaging bag 20 to the middle of the peripheral heat fusion portion 21,
By performing the solid line cutting process c that penetrates at least all the layers of the base film layer 2 and the sealant layer 4, the solid line cutting process c can be easily performed by simply tearing it with a finger. Alternatively, the broken line cutting start scratch processing a is torn to cut the broken line or solid line continuous cutting processing b,
A cutting process c that can be easily opened, and that has completely aligned positions on the extension line or the connecting line and that penetrates at least all the layers of the base film layer 2 and the sealant layer c
Since the cutting start scratch processing a and the continuous cutting scratch processing b described above are continuously performed, there is no fear that the tearing direction is bent, and in particular, a flexible packaging bag that is easy to open and easy to open is provided. Can be provided.

According to a fourth aspect of the present invention, in the flexible packaging bag which is easy to open, at least the base film layer 2, the barrier layer 3 and the sealant layer 4 are laminated from the outer surface side and the peripheral portion is heat-sealed. A flexible packaging bag 20 of various shapes formed by: a solid linear shape that penetrates at least the base film layer 2 and the barrier layer 3 while leaving the sealant layer 4 in the peripheral heat-sealing portion 21 of the flexible packaging bag 20. Or, a cutting start scratch processing a in a broken line shape is applied, and a non-heat-bonded portion on an extension line of the cutting start scratch processing a of the flexible packaging bag 20 penetrates only the base film layer 2 and has a broken line shape or a solid line shape. Cutting continuous scratch processing b
Is a flexible packaging bag that is easy to open, characterized by being continuously subjected to the cutting start scratch processing a.

In the soft packaging bag of the present invention according to claim 4, which is easy to open, the base having excellent tear strength and the like, leaving the sealant layer 4 in the peripheral heat-sealed portion 21 of the flexible packaging bag 20. A solid line or broken line cutting start scratch processing a which penetrates the film layer 2 and the barrier layer 3 is applied, and tearing is performed on the non-heat-bonded portion on the extension line of the cutting start scratch processing a of the flexible packaging bag 20. By continuously performing the cutting continuous scratch processing b in the form of a broken line or a solid line, which penetrates only the base film layer 2 having excellent strength, etc., to the cutting start scratch processing a, a continuous line or a broken line cutting start scratch is formed. Just by putting a finger on the processing a and tearing it slightly strongly, the broken continuous line or continuous line cutting continuous scratch processing b can be easily cut and opened, and the position on the extension line is completely the same. , Leaving the sealant layer 4 Since the cutting start flaw processing a that penetrates the base film layer 2 and the barrier layer 3 and the continuous cutting flaw processing b that penetrates only the base film layer 2 are continuously performed, the tearing direction is bent. It is possible to provide a flexible packaging bag that is easy to open without fear.

Moreover, in the soft packaging bag of the present invention according to claim 4, which is easy to open, the sealant layer 4 having excellent sealing property is left on the peripheral heat-sealing portion 21 of the flexible packaging bag 20. , At least the base film layer 2 and the barrier layer 3
Since the cutting start scratch processing a that penetrates through is provided, there is no problem in the sealing property of the peripheral heat-sealing portion 21 of the soft packaging bag 20, and at least the gas barrier is provided in the non-heat-sealing portion of the soft packaging bag 20. Since the barrier layer 3 and the sealant layer 4, which have excellent properties, etc., are left and the continuous cutting process b is performed through only the base film layer 2, the gas barrier property of the non-heat-sealed portion of the flexible packaging bag 20 is improved. It is possible to obtain a flexible packaging bag which has no problem with the above and is excellent in storability of contents and which can be easily opened.

As shown in FIGS. 1E and 1F, the flexible packaging bag of the present invention, which is easy to open, has at least a base film layer 2, a barrier layer 3 and a sealant layer 4 laminated from the outer surface side. And various shapes formed by heat-sealing the peripheral part
A flexible packaging bag 20 (vertical seal type in FIG. 1E), in which at least two base film layers 2 and a barrier are left at two opposing positions of the peripheral heat-sealing portion 21 of the flexible packaging bag 20. A solid line or broken line (solid line in FIG. 1E) cutting start flaw processing a 1 passing through the layer 3 is performed, and non-heat on the line connecting the cutting start flaw processing a 1 of the flexible packaging bag 20 a It is characterized in that a continuous cutting process b in a broken line shape or a solid line shape (solid line shape in FIG. 1E), which penetrates only the base film layer 2, is continuously applied to the cutting start scratch processing a 1, a in the fusion-bonded portion. The flexible packaging bag is easy to open.

According to the fifth aspect of the present invention, in the easy-opening flexible packaging bag, at least the tear strength is left at the two facing portions of the peripheral heat-sealing portion 21 of the flexible packaging bag 20 with the sealant layer 4 left. On the line connecting the cutting start scratches a 1 and a 2 which penetrate the base film layer 2 and the barrier layer 3 excellent in solid line or broken line, and cut start scratches a 1 and a 2 of the flexible packaging bag 20. In the non-heat-sealed portion of the above, a continuous cutting process b of a broken line or a solid line which penetrates only the base film layer 2 having excellent tear strength, and a cutting start scratching process a
, a continuous cutting operation for cutting start scratches a or a broken line can be easily performed by simply putting a finger on the cutting start scratches a, a and tearing slightly. Cutting start scratches a 1 and a 2 that can be cut and easily opened, and that the positions on the connecting line are completely aligned and that leave at least the sealant layer 4 and penetrate at least the base film layer 2 and the barrier layer 3. Since the continuous cutting treatment b that penetrates only the base film layer 2 is continuously applied, it is possible to provide a flexible packaging bag that is easy to open without fear of bending the tearing direction.

The soft packaging bag according to claim 6 of the present invention which is easy to open is the soft packaging bag according to claim 4 or 5 which is easy to open as shown in FIGS. 1E and 1F. Cutting start flaw processing a from the edge of the flexible packaging bag 20 to the middle of the peripheral heat-sealing portion 21 (in FIGS. 1E and 1F, cutting start flaw processing a,
In place of a), a solid line cutting process c (cutting processes c 1 and c 2 in FIGS. 1E and 1F) that penetrates at least all layers of the base film layer 2, the barrier layer 3 and the sealant layer 4 is performed. A characteristic feature of this flexible packaging bag is that it is easy to open.

In the flexible packaging bag of the present invention according to claim 6, which is easy to open, in place of the cutting start scratch processing a from the edge of the flexible packaging bag 20 to the middle of the peripheral heat fusion portion 21,
By applying the solid line cutting process c that penetrates at least all the layers of the base film layer 2, the barrier layer 3, and the sealant layer 4, the solid line cutting process c is put on a finger,
By simply tearing lightly, the solid line or broken line cutting start scratch processing a can be easily torn to cut the broken line or solid line cutting continuous scratch processing b, and can be easily opened, and can be opened or extended. At least the base film layer 2, the barrier layer 3, and the sealant layer 4 whose positions on the line are completely the same.
Since the cutting process c penetrating all the layers of and the cutting start scratching process a and the continuous cutting scratching process b described above are continuously performed, there is no fear that the tearing direction is bent, and particularly the cutting start is easy. It is possible to provide a flexible packaging bag which is easy to open.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION In the flexible packaging bag of the present invention which can be easily opened, at least the base film layer 2 (and the barrier layer 3 except for the sealant layer 4 applied to the peripheral heat-sealing portion 21 of the flexible packaging bag 20. For the solid line or broken line cutting start scratch processing a that penetrates through
Regarding the continuous cutting process b of broken line or solid line, which is applied to the non-heat-bonded portion on the extension line or the connecting line of the cutting start scratching process a, the cutting continuous scratching process b of only the ( A solid line that penetrates at least all layers of the base film layer 2 and the (barrier layer 3) and the sealant layer 4 in place of the cutting start scratch processing a from the edge of 20 to the middle of the peripheral heat fusion portion 21. For cutting process c),
Beautifully printed base film layer 2 with excellent tear strength, and (barrier layer 3 with excellent gas barrier properties, etc.
), And during or after the winding-like laminating step with the sealant layer 4 having excellent sealing property, etc.
With a mechanical method such as a metal blade or a thermal method such as carbon dioxide gas laser, the position on the extension line or the connecting line is completely aligned, and the solid line or broken line cutting start scratch processing a and the broken line or solid line shape Continuous cutting process b and (solid line cutting process c
By continuously applying (1) and (2) in one step, it is possible to obtain a flexible packaging bag that is easy to open without fear that the tearing direction is bent.

However, in the mechanical method of the metal blade or the like shown in the present embodiment, the positions on the extension line or the connecting line are completely matched by precisely and finely adjusting the depth of the metal blade or the like. The solid line or broken line cutting start scratch processing a, the broken line or solid line continuous cutting processing b and the solid line cutting processing c can be stably and continuously performed in one step. However, in order to leave the sealant layer 4 having an excellent sealing property and to perform the cutting start scratch processing a penetrating the ultra-thin base film layer 2 (and the barrier layer 3) of at least 50 μm or less, a pole of 50 μm or less is used. Since a continuous cutting process b for cutting that penetrates only the thin base film layer 2 is performed, the mechanical method has a limit of speed, which is intermittent at a lower speed than that of the winding lamination process. there were.

Therefore, regarding the thermal method such as the carbon dioxide gas laser shown in the present embodiment, it is possible to input conditions of different depths on one line, for example, by utilizing the additional function of the carbon dioxide gas laser. As shown in Examples described later, when penetrating the base film layer 2 of nylon 15 μm and the barrier layer 3 of polyester 30 μm (see Example 3), scan speed 500 mm / sec, oscillation frequency 5 kHz, output By inputting a condition of about 40 W and when penetrating only the base film layer 2 of nylon 15 μm (see Examples 1 to 3),
Scan speed 1000mm / sec, oscillation frequency 5kHz,
By inputting a condition of an output of about 15 W, when further penetrating all the layers of the base film layer 2 of nylon 15 μm and the sealant layer 4 of polyethylene 35 μm (see Example 2), the scanning speed is 500 mm / sec,
By inputting the conditions of oscillation frequency 8 kHz and output 40 W, the continuous line or broken line cutting start scratch processing a and the broken line or continuous line cutting continuous scratch processing in which the positions on the extension line or the connecting line are completely matched. b and (solid line cutting c and
Can be continuously applied in one step during the winding-shaped laminating step or after the winding-shaped laminating step, stably at high speed.

Incidentally, the cutting start scratch processing a of the flexible packaging bag 20
Regarding the continuous cutting process b of the above-mentioned broken line or solid line, which is applied to the non-heat-bonded portion on the extension line or the connecting line of
The straight line shown in FIGS. 1A, C, and E is generally used, but the straight line is not necessarily required to be a straight line, and the design shape of the flexible packaging bag is easy to open and the opening shape is easy to pour when opened. In consideration of the above, the continuous cutting process b for cutting the broken line or the solid line of an arbitrary curve is continued to the starting cutting process a by a mechanical method such as a metal blade or a thermal method such as carbon dioxide laser. Can be applied.

[0024]

EXAMPLES Example 1 FIG. 1A is a plan view of a flexible packaging bag that is easy to open in Example 1 of the present invention, and FIG. 1B is a cutting start scratch processing a and a cutting continuous scratch processing b. FIG. 7 is a cross-sectional explanatory view of a flexible packaging bag that is continuously subjected to and is easy to open.

The flexible packaging bag of Example 1 of the present invention which is easy to open has a base film layer 2 and a sealant layer 4 from the outer surface side.
Is stacked and the peripheral portion is heat-sealed to accommodate dried ingredients for cup ramen, the length and width of which are 80 × 52 m.
A three-way seal type flexible packaging bag 20 having a length of 8 mm which penetrates at least the base film layer 2 with the sealant layer 4 left in the peripheral heat-sealing portion 21 of the flexible packaging bag 20. Cutting start scratch processing a (also referred to as perforation) is applied, and only the base film layer 2 is penetrated to the non-heat-bonded portion on the extension line of the cutting start scratch processing a of the flexible packaging bag 20. Is a flexible packaging bag that is easy to open by continuously performing the continuous cutting damage processing b having a length of 44 mm on the cutting start scratch processing a.

That is, a base film layer 2 of biaxially stretched nylon (ONy, 15 μm) having a beautiful printed inner surface and excellent tear strength, and a linear low-density polyethylene (LLDPE, 35 μm) having excellent sealing performance. And the sealant layer 4 of No. 3 are laminated by a usual extrusion lamination method in the form of a roll through sand polyethylene (SPE, 15 μm) not shown,
Next, by utilizing the additional function of an ordinary carbon dioxide gas laser device (manufactured by GSI Lumonix Japan KK, PC-MARK-MT), biaxially stretched nylon and sand polyethylene were penetrated while leaving linear low density polyethylene. By inputting the conditions of a scan start 500 mm / sec, an oscillation frequency of 5 kHz, and an output of 15 W, a broken line cutting start scratch processing a having a length of 8 mm shown in FIG. 1A was passed through only biaxially stretched nylon. As shown in FIG. 1A, a continuous cutting process b with a broken line having a length of 44 mm was performed at a scanning speed of 1000 mm / sec,
By inputting conditions of an oscillation frequency of 5 kHz and an output of 15 W, laser irradiation is continuously performed in the order of upper surface side scratch processing a 1 and b 2 and lower surface side scratch processing b 1 a shown in FIG. 1B. A slitter with a width of 104 mm is folded in two in the same normal filling bag manufacturing process as the conventional one so that the positions of the scratch processing a, b on the upper surface side and the scratch processing a, b on the lower surface side match. While accommodating an object, the peripheral portion is heat-sealed without providing a conventional cutting start notch d such as an I-shape, and the first embodiment
1A and 1B, a three-way seal type flexible packaging bag which is easy to open was manufactured.

In the flexible packaging bag of Example 1 of the present invention which can be easily opened, the peripheral heat-sealing portion 21 of the flexible packaging bag 20 is
Penetrating biaxially oriented nylon and sand polyethylene, which have excellent tear strength, leaving linear low-density polyethylene,
Only the biaxially stretched nylon having excellent tear strength is applied to the non-heat-bonded portion on the extension line of the cutting start scratch processing a of the flexible packaging bag 20 after the cutting start scratch processing a in the broken line shape shown in FIG. 1A is performed. Penetrating, continuous cutting flaw b in broken line shape shown in FIG. 1A
By continuously performing the cutting start scratch processing a,
The broken-line cutting start scratch processing a can be easily cut by simply putting a finger on the scratch processing a and tearing it slightly strongly, and the broken continuous cutting processing b can be easily opened, and the position on the extension line is perfect. 1A, and the positions of the upper surface and the lower surface shown in FIG. 1B were the same, and the cut initiation scratch processing a that penetrated the biaxially stretched nylon and the sand polyethylene leaving the linear low density polyethylene, and the biaxially stretched nylon. Since the continuous cutting process b for cutting, which penetrates only the pouch, was continuously applied by irradiating a laser, it was possible to obtain a flexible packaging bag that is easy to open without fear of bending the tearing direction.

<Second Embodiment> FIG. 1C shows a second embodiment of the present invention.
FIG. 3 is a plan view of a flexible packaging bag that is easy to open in
FIG. 1D is a cross-sectional explanatory view of a flexible packaging bag that is easy to open, in which cutting start scratch processing a 1, a, continuous cutting scratch processing b, and cutting processing c 1, c are continuously performed.

The flexible packaging bag of Example 2 of the present invention which is easy to open is formed by laminating the base film layer 2 also serving as a barrier layer and the sealant layer 4 from the outer surface side and heat-sealing the peripheral portion. A three-sided seal type flexible packaging bag 20 having a length and width of 120 × 86 mm, which accommodates delicacies such as almonds and mixed nuts. A solid line-shaped cutting start flaw processing a, a having a length of 6 mm, which penetrates at least the base film layer 2 which also functions as a barrier layer while leaving the sealant layer 4 in place.
And start cutting of the flexible packaging bag 20.
In the non-heat-sealed portion on the line connecting the two, continuous cutting processing b of a broken line having a length of 76 mm, which penetrates only the base film layer 2, is continuously applied to the cutting start scratch processing a, a, and Cutting start scratch processing a of 3 mm from the edge of the flexible packaging bag 20 to the middle of the peripheral heat-sealed portion 21 is replaced with a, and all the layers of the base film layer 2 also serving as a barrier layer and the sealant layer 4 are penetrated. The flexible packaging bag having a length of 3 mm and subjected to the solid line cutting processes c 1 and c 2 is easy to open.

That is, a ceramic vapor deposition having an excellent gas barrier property etc. was applied to the inner surface and an excellent tear strength was obtained.
A base film layer 2 which also serves as a barrier layer of axially stretched nylon (ONy, 15 μm) and a sealant layer 4 of linear low density polyethylene (LLDPE, 35 μm) which has excellent sealing properties, and sand polyethylene (not shown) SPE, 20μm), laminated by a roll-shaped ordinary extrusion lamination method,
Next, using the usual additional function of the same carbon dioxide gas laser apparatus as in Example 1, the linear low density polyethylene was left and the biaxially stretched nylon and the sand polyethylene were penetrated,
A solid line-shaped cutting start flaw processing a having a length of 3 mm shown in FIG. 1C
, a, a scanning speed of 1000 mm / sec, an oscillation frequency of 5 kHz, and an output of 30 W, and also, only the biaxially stretched nylon is penetrated, and a broken continuous cutting flaw with a length of 76 mm shown in FIG. 1C is processed. b, scan speed 1000 mm / sec, oscillation frequency 5 kHz, output 15 W
By inputting the conditions described above, the solid line cutting processing c 1 and c 2 having a length of 3 mm shown in FIG. 1C which further penetrates all layers of biaxially oriented nylon, sand polyethylene and linear low density polyethylene is scanned. By inputting conditions of a speed of 500 mm / sec, an oscillation frequency of 8 kHz, and an output of 40 W, the flexible packaging bag 20 shown in FIG.
From the edge side of the cutting process c, scratching process a, b, a,
Laser irradiation is continuously performed in the order of cutting processing c, and then slitting is performed to a width of 240 mm, and the cutting processing c is performed on each of the upper surface side and the lower surface side in a normal filling bag manufacturing process similar to the conventional one. , The scratch processing a, b, a, and the cutting processing c are folded in two so that the positions thereof coincide with each other, and the contents are accommodated, while the conventional cutting start cutouts d 1 and d 2 having a V shape are not provided. The portions were heat-sealed to prepare a three-way seal type flexible packaging bag which is easy to open as shown in FIGS.

In the flexible packaging bag of Example 2 of the present invention which is easy to open, the linear low density polyethylene is left at two opposing positions of the peripheral heat-sealing portion 21 of the flexible packaging bag 20 so that the tear strength and the like can be improved. The solid line-shaped cutting start scratches a 1 and a 2 shown in FIG. 1C, which penetrate the excellent biaxially stretched nylon and the sand polyethylene, are applied, and the non-line on the line connecting the cutting start scratches a 1 and a 2 of the flexible packaging bag 20 In the heat-sealed portion, only the biaxially stretched nylon having excellent tear strength and the like is penetrated, and the continuous cutting damage b of broken line shown in FIG.
The cutting start from the edge of the flexible packaging bag 20 to the middle of the peripheral heat-sealing portion 21 is replaced with the scratch processing a 1 and a 2 and biaxially stretched nylon, sand polyethylene, and linear low-density polyethylene. By performing the solid line cutting process c 1, c 2 shown in FIG. 1C which penetrates all the layers, the solid line cutting process c 1, c 2 can be easily performed by simply tearing with a finger. The cutting start scratches a 1 and a 2 are torn to cut the broken continuous cutting work b so that the cut can be easily opened, and the positions on the connecting line are completely the same.
Only the cutting process c 1, c 2 which penetrates all layers and the cutting start scratches a 1, a and a biaxially stretched nylon which penetrate the biaxially stretched nylon and sand polyethylene in which the positions of the upper surface side and the lower surface side shown in D coincide Since the continuous cutting process b with the continuous cutting is performed by irradiating a laser, there is no fear that the direction of tearing will be bent, and in particular, a flexible packaging bag that is easy to open and easy to open is obtained. I was able to.

In the flexible packaging bag of Example 2 of the present invention, which is easy to open, the inner surface of the flexible packaging bag is ceramic-deposited.
Since the axially stretched nylon is not beautifully printed, the peripheral portion is heat-sealed while accommodating the contents in the usual filling bag making process similar to the conventional one, and the three-way seal shown in FIGS. After producing a flexible packaging bag that can be easily opened by a formula, an adhesive label or the like with a beautiful print such as a product name can be appropriately attached and shipped.

<Third Embodiment> FIG. 1E shows a third embodiment of the present invention.
1F is a perspective front view of a flexible packaging bag that can be easily opened, and FIG. 1F shows that the cutting start scratch processing a 1, a, the continuous cutting scratch processing b, and the cutting processing c 1, c are continuously performed. It is a cross-sectional explanatory view of an easy flexible packaging bag.

The soft packaging bag of Example 3 of the present invention, which is easy to open, is formed by laminating the base film layer 2, the barrier layer 3 and the sealant layer 4 from the outer side and heat-sealing the peripheral portion. Contains 550 ml of refilling shampoo and rinse, bottom width, width and height is 62 x 124 x 200 mm
A vertical sealing type flexible packaging bag 20 with a spout (commonly referred to as a standing pouch), which is a flexible packaging bag 2
No. 0 spouting, the peripheral heat-sealing portion 21 at two opposing positions, leaving the sealant layer 4 and penetrating the base film layer 2 and the barrier layer 3 and having a length of 6 mm, a solid line-shaped cutting start flaw processing a , a, and a start cutting flaw processing a, of the flexible packaging bag 20, a non-heat-bonded portion on a line connecting the a and a penetrates only the base film layer 2 and has a continuous cutting flaw with a length of 12 mm. The processing b is continuously applied to the cutting start scratch processing a 1, a, and further, the cutting start scratch processing a 1, a of 3 mm from the end side of the spout of the flexible packaging bag 20 to the middle of the peripheral heat fusion portion 21 is performed. Instead, it is a flexible packaging bag that penetrates all the layers of the base film layer 2, the barrier layer 3, and the sealant layer 4 and has a length of 3 mm and is subjected to cutting processes c 1 and c 2 in a solid line shape, which is easy to open.

That is, a base film layer 2 of biaxially stretched nylon (ONy, 15 μm) having a beautiful printed inner surface and excellent tear strength, and a stretched polyester having an inner surface vapor-deposited with aluminum having excellent gas barrier properties. (OPET, 30μ
The barrier layer 3 of m) and the sealant layer 4 of linear low density polyethylene (LLDPE, 35 μm), which has excellent sealing performance, are usually wound in a roll shape via a urethane-based adhesive (not shown). And then the linear low density polyethylene is left by using the additional function of the usual carbon dioxide gas laser device which is the same as that of the first embodiment.
Axial stretched nylon and stretched polyester are penetrated, as shown in FIG.
A solid line-shaped cutting start flaw processing a 1, a having a length of 3 mm shown in E
Scan speed 500 mm / sec, oscillation frequency 5 kHz
By inputting the condition of the output of 40 W, the length shown in FIG.
By inputting the conditions of a continuous cutting flaw b of a solid line of mm, a scanning speed of 1000 mm / sec, an oscillation frequency of 5 kHz and an output of 15 W, all layers of biaxially stretched nylon, stretched polyester and linear low density polyethylene are further added. 1E through which the solid line-shaped cutting processes c 1 and c 2 having a length of 3 mm shown in FIG. 1E are input as conditions for a scan speed of 300 mm / sec, an oscillation frequency of 8 kHz, and an output of 40 W. From the edges of the spout of the flexible packaging bag 20 with the lower surface side, cutting processing c, scratch processing a, b, a, respectively,
In the order of cutting process c, laser irradiation is continuously performed, and then slitting is performed to a width of 482 mm, and a bottom width portion of 62 mm is folded in a bag making process of a standing pouch similar to the conventional method, while the upper side and the lower side are folded. It is folded in two so that the positions of the cutting process c, the scratching processes a, b, a, and the cutting process c coincide with those of the side, and the conventional V-shaped cutting start notches d 1, d 2 are spouted. 1E, as shown in FIG. 1E, the peripheral portion excluding the injection port portion of the upper side is heat-sealed, and at the same time, the concave unnecessary portion around the spout is cut and removed,
In the same filling process of the standing pouch as in the conventional case, while the contents are accommodated from the injection port, the injection port portion on the upper side is heat-sealed and sealed, and the injection port with the injection port shown in FIGS. A vertical-seal type flexible packaging bag that is easy to open was manufactured.

In the flexible packaging bag of Example 3 of the present invention, which is easy to open, the biaxial stretching which is excellent in tear strength and the like is provided at two facing portions of the peripheral heat-sealing portion 21 of the spout of the flexible packaging bag 20. Penetration through nylon and stretched polyester, FIG. 1E
The biaxially stretched nylon having excellent tear strength and the like at the non-heat-bonded portion on the line connecting the cutting start scratches a 1, a of the flexible packaging bag The continuous cutting processing b for continuous cutting shown in FIG. 1E, which penetrates only the cutting start scratch processing a 1, a, is continuously applied, and further, from the end side of the spout of the flexible packaging bag 20 to the peripheral heat fusion portion. In the middle of 21, cutting start scratches a 1, a are replaced with a, and all the layers of biaxially stretched nylon, stretched polyester, and linear low-density polyethylene are penetrated, and the solid line cutting process c shown in FIG.
By applying c, it is possible to easily tear the solid-line cutting start scratches a 1 and a by simply tearing the solid-line cutting processes c 1 and c with a finger and tearing the solid-line cutting continuous scratching processes b 1 and b 2. Cutting process that can easily cut and open the spout, the positions on the connecting line are completely the same, and the positions of the upper surface and the lower surface shown in FIG. c, c, a cutting start scratch processing penetrating the biaxially stretched nylon and the stretched polyester, and a continuous scratch processing b cutting a, a and the biaxially stretched nylon alone are continuously applied by irradiating a laser, resulting in tearing. It was possible to obtain a flexible packaging bag that is easy to open (at the spout) and that does not have a risk of bending in the direction in which it is bent, and that particularly facilitates cutting.

Further, in the flexible packaging bag of Example 3 of the present invention which is easy to open, the same process as in the conventional method for forming a standing pouch differs from that of Examples 1 and 2 in that
In order to fold it in half while folding the 2 mm bottom width part,
When it is difficult to match the positions of the cut processing c and the scratch processing a, b, a, and the cut processing c on the upper surface side and the lower surface side shown in FIG. 1F, it is preferable to use biaxially stretched nylon and gas that have excellent tear strength and the like. The stretched polyester having excellent barrier properties and the linear low-density polyethylene having excellent sealing properties are laminated, and in the bag making step of the standing pouch, the bottom width portion of 62 mm is folded in two and folded in two. The cutting start scratch processing a 1, a 2 and the continuous linear cutting processing b 1 and the continuous cutting processing c 1, c 2 are performed using two irradiation nozzles of the same power of the carbon dioxide laser device described above. The positions of the cutting process c, the scratch processes a, b, a, and the cutting process c may be perfectly aligned, and laser irradiation may be performed simultaneously from the upper surface side and the lower surface side to perform continuous processing.

[0038]

As described above, in the soft packaging bag of the present invention which is easy to open, as shown in the other examples, a three-sided seal type or a vertical seal type (a vertical seal type, which accommodates a wide range of spices, foods, refill detergents, etc.) Conventional I such as standing pouch
Instead of the cutting start notch d having a V-shape or the like, the position on the extension line or the connecting line is completely matched, and at least the base film layer 2 (and the barrier layer 3) is left, leaving the sealant layer 4. The cutting start scratch processing a and the continuous cutting scratch processing b that penetrates only the base film layer 2 are continuously applied, and at least all layers of the base film layer 2 and the (barrier layer 3) and the sealant layer 4 are formed. To provide a flexible packaging bag that is easy to open and that has a cutting process c that penetrates through the cutting process, a cutting start scratching process a, and a cutting continuing scratching process b described above that are continuously applied and that does not have a risk of bending in a tearing direction. You can

[Brief description of drawings]

1A, 1C, 1C, 1E, 1C, 1E, 1E, 1C, 1E, 1E, 1C, 1E, 1E, 1C, 1E, 1E, 1E, 1C, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, 1E, and 1E of the present invention. Cutting start scratch processing a
And the continuous cutting process b were continuously performed, and as shown in FIG.
F is a cross-sectional explanatory view of a flexible packaging bag that is easy to open, in which cutting start scratch processing a, a, continuous cutting scratch processing b, and cutting processing c 1, c are continuously performed.

2A, 2B, 2C, and 2D are plan views and perspective front views of a flexible packaging bag that is easy to open.

[Explanation of symbols]

2 ... Base film layer 3 ... Barrier layer 4 ... Sealant layer 20 ... Flexible packaging bag 21 ... Peripheral heat fusion part a ... Cutting start scratch processing b ... Cutting continuous scratch processing c ... Cutting d ... Cutting start notch

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3E064 AB11 BA22 BB03 BC18 EA12                       HN06 HP01 HP02

Claims (6)

[Claims] 1. At least a base film layer 2 from the outer surface side.
And a sealant layer 4 are laminated, and a flexible packaging bag 20 of various shapes is formed by heat-sealing the peripheral portion, and the sealant layer 4 is left on the peripheral heat-sealing portion 21 of the soft packaging bag 20. A solid line or broken line cutting start flaw processing a which penetrates at least the base film layer 2 is applied, and the flexible packaging bag 20
In the non-heat-bonded portion on the extension line of the cutting start scratch processing a, the continuous cutting processing b of broken line or solid line which penetrates only the base film layer 2 is continuously applied to the cutting start scratch processing a. A flexible packaging bag that is easy to open characterized in that 2. At least the base film layer 2 from the outer surface side.
A flexible packaging bag 20 of various shapes formed by laminating a sealant layer 4 and a sealant layer 4 and heat-sealing the peripheral portion, and sealant is provided at two opposite positions of the peripheral heat-sealing portion 21 of the soft packaging bag 20. A solid line or broken line cutting start scratch processing a 1, which passes through at least the base film layer 2 with the layer 4 left, and a non-heat on the line connecting the cutting start scratch processing a 1, a of the flexible packaging bag 20. A soft, easy-to-open piece characterized in that a continuous cutting process b of a broken line or a solid line, which penetrates only the base film layer 2, is continuously applied to the cutting start scratch process a 1, a in the fusion-bonded portion. Packaging bag. 3. The soft packaging bag according to claim 1 or 2, which is easy to open, in place of the cutting start scratch processing a from the edge of the flexible packaging bag 20 to the middle of the peripheral heat-sealing portion 21. ,
A soft packaging bag that is easy to open, characterized by being subjected to a solid line cutting process c that penetrates at least all layers of the base film layer 2 and the sealant layer 4. 4. At least the base film layer 2 from the outer surface side.
A flexible packaging bag 20 of various shapes, which is formed by laminating a barrier layer 3 and a sealant layer 4, and heat-sealing the peripheral portion,
The peripheral heat-sealing portion 21 of the flexible packaging bag 20 is subjected to cutting start scratch processing a in a solid line or a broken line, which penetrates at least the base film layer 2 and the barrier layer 3 while leaving the sealant layer 4, and In the non-heat-bonded portion on the extension line of the cutting start scratch processing a of the flexible packaging bag 20, the continuous cutting processing b of broken line or solid line that penetrates only the base film layer 2 is continued to the cutting start scratch processing a. A flexible packaging bag that is easy to open and is characterized by being applied. 5. At least the base film layer 2 from the outer surface side.
A flexible packaging bag 20 of various shapes, which is formed by laminating a barrier layer 3 and a sealant layer 4, and heat-sealing the peripheral portion,
A solid line or broken line cutting start flaw processing a that penetrates at least the base film layer 2 and the barrier layer 3 at two opposite positions of the peripheral heat fusion portion 21 of the flexible packaging bag 20 while leaving the sealant layer 4 a. , a, and a flexible packaging bag 20
Cutting start scratch processing of a, on the non-heat-bonded portion on the line connecting a,
A flexible packaging bag that is easy to open, characterized in that a continuous cutting process b of a broken line or a solid line that penetrates only the base film layer 2 is continuously applied to the cutting start scratch processes a 1 and a 2. 6. The soft packaging bag according to claim 4 or 5, which is easy to open, in place of the cutting start scratch processing a from the edge of the flexible packaging bag 20 to the middle of the peripheral heat-sealing portion 21. ,
A flexible packaging bag that is easy to open, characterized by being subjected to a cutting process c in a solid line shape that penetrates at least all layers of the base film layer 2, the barrier layer 3, and the sealant layer 4.