JP7087711B2 - Pouch and its manufacturing method - Google Patents

Description

The present invention relates to a pouch and a method for producing the pouch.

Conventionally, for example, a patch containing a percutaneous penetrating agent such as an external analgesia / anti-inflammatory agent, a pouch for sealing a food such as a health food, etc. have a notch or a notch for easily opening the pouch. ing. When such a pouch is opened from a notch or notch, the break line on the front surface and the break line on the back surface may overlap. When taking out the contents, one hand picks the front surface and the other hand picks the back surface to open the pouch. It may be difficult to pick the front and back sides respectively.

For this reason, opening guide lines are provided on the front surface and the back surface, respectively, and when the package is opened, a step is formed between the break line on the front surface and the break line on the back surface to form a step on the front surface and the back surface. A technique for making it easier to pick each back surface is being studied (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2014-51311

However, even if such an opening guide wire is provided, the step formed by the breaking line formed on the front surface and the breaking line formed on the back surface by opening is too small, and the front surface is formed. And the back side may be difficult to pick. In particular, when the pouch is provided with a chuck tape, it is necessary to form an opening guide wire in a narrow region between the upper edge of the pouch and the chuck tape, and the step tends to be small.

The present invention has been made to solve the above problems. That is, it is an object of the present invention to provide a pouch that makes it easy to pick the front surface and the back surface when the package is opened.

According to one aspect of the present invention, a pouch having a front surface and a back surface and formed by using a packaging material containing at least a base material layer and a sealant layer, the first end portion and the above. The second end on the opposite side of the first end, the third and fourth ends extending between the first end and the second end, respectively, the third end and the said. An end seal portion formed at each of the fourth end portions, an opening starting means formed at each of the end seal portions and composed of a notch or a notch, and the front surface or the back surface thereof. A continuous linear first opening guide wire is provided, the first opening guide wire is a line that penetrates the base material layer and does not penetrate the sealant layer, and the first opening guide wire is said. Two firsts that are inclined with respect to the virtual line connecting the inner edges of the opening starting means so that the distance between the pouches becomes narrower toward the first end side and intersects with the virtual line. It has an inclined line portion and a convex line portion that is located between the first inclined line portions and is convex toward the second end portion side of the pouch, and is the most mentioned in the convex line portion. A pouch is provided in which the position on the second end side is located closer to the second end side of the pouch than the virtual line.

According to another aspect of the present invention, a pouch having a front surface and a back surface and formed by using a packaging material containing at least a base material layer and a sealant layer, the first end portion and the above. The second end on the opposite side of the first end, the third and fourth ends extending between the first end and the second end, respectively, the third end and the said. An end seal portion formed at each of the fourth end portions, an opening starting means formed at each of the end seal portions and composed of a notch or a notch, and the front surface or the back surface thereof. A continuous linear first opening guide wire is provided, the first opening guide wire is a line that penetrates the base material layer and does not penetrate the sealant layer, and the first opening guide wire is said. Two firsts that are inclined with respect to the virtual line connecting the inner edges of the opening starting means and intersect with the virtual line so as to widen the distance from each other toward the first end side of the pouch. It has an inclined line portion and a convex line portion that is located between the first inclined line portions and is convex toward the first end portion side of the pouch, and is the most numerous in the convex line portion. A pouch is provided in which the position on the one end side is located closer to the first end side of the package than on the virtual line.

In the pouch, the first opening guide line may be connected to the first inclined line portion and the convex line portion, and may further have a first reference line portion substantially parallel to the virtual line.

In the pouch, the resealable means may be further provided, and the opening start means and the first opening guide line may be located closer to the first end portion of the resealable means, respectively.

The pouch according to the above aspect further comprises a second opening guide wire formed between the opening starting means on the front surface and the back surface of the back surface where the first opening guide wire is not formed. The second opening guide wire is a line that penetrates the base material layer and does not penetrate the sealant layer, so that the distance between the second opening guide wires becomes narrower toward the first end side. It may have two continuous linear second inclined line portions inclined with respect to the virtual line, and the second inclined line portion may be formed at a position corresponding to the first inclined line portion.

In the pouch of the other aspect, the second opening guide wire formed between the opening starting means on the front surface and the back surface of the back surface where the first opening guide wire is not formed is further provided. The second opening guide wire is a line that penetrates the base material layer and does not penetrate the sealant layer, so that the second opening guide wire is widely spaced from each other toward the first end side. It may have two continuous linear second inclined line portions inclined with respect to the virtual line, and the second inclined line portion may be formed at a position corresponding to the first inclined line portion.

In the pouch, the second opening guide line may further have a continuous linear second reference line portion connected to the second inclined line portion and substantially parallel to the virtual line.

In the pouch, the tear propagation resistance in the first direction parallel to the virtual line is orthogonal to the first direction on the front surface and the back surface on which the first opening guide line is not formed. It may be smaller than the tear propagation resistance in the second direction.

The contents may be housed in the pouch.

According to the method for producing a pouch according to another aspect of the present invention, the pouch has a continuous linear shape that includes at least a base material layer and a sealant layer, and extends in a length direction that penetrates the base material layer and does not penetrate the sealant layer. The step of preparing the original roll having the packaging material having the first opening guide wire, and the process of unwinding the packaging material from the original roll and cutting or cutting the packaging material in half along the length direction of the packaging material. With the step of half-folding and the first sealing portion extending in the length direction by heat-sealing the packaging material in a state where the half-cut or half-folded packaging materials are overlapped so that the sealant layers face each other. During the step of forming a plurality of second sealing portions extending in the width direction of the packaging material at predetermined intervals to continuously obtain a plurality of sealed bags and the step of obtaining the packaging material, the packaging material. It is provided with a step of filling the contents in between, a step of forming an opening starting means including a notch or a notch at a predetermined position of each of the second seal portions, and a step of individualizing the bag body. In the original roll, the first opening guide wire is formed in a first region which is a half region in the width direction of the packaging material, and the first opening guide wire is the length of the packaging material. Each of the first virtual lines in the first region, which is a virtual line connecting the inner edges of the opening starting means, is inclined so as to narrow the distance between the first ends extending in the circumferential direction. The two first inclined line portions that intersect with the first virtual line and the first end portion that is located between the first inclined line portions and extends in the length direction of the packaging material are opposite to each other. It has a convex line portion that becomes convex toward the second end portion side on the side, and the position of the second end portion side of the convex line portion is the second position of the first virtual line. A method of manufacturing a pouch, located on the end side, is provided.

In the method for producing a pouch, the packaging material in the raw fabric roll contains at least a base material layer and a sealant layer, and extends in a length direction that penetrates the base material layer and does not penetrate the sealant layer. The second opening guide wire further has an opening guide wire, and the second opening guide wire is formed in a second region in which the first opening guide wire is not formed in the half region in the width direction of the packaging material. The second opening guide line is a virtual line connecting the inner edges of the opening starting means so that the distance between the second opening guide lines becomes narrower toward the second end side extending in the length direction of the packaging material. It has two continuous linear second inclined line portions that are inclined with respect to the second virtual line in the two regions and intersect with the second virtual line, respectively, and the second inclined line portion has the length. The packaging material may be formed so as to overlap the first inclined line portion when the packaging materials are cut in half or folded in half along the vertical direction and the packaging materials are overlapped with each other.

According to the method for producing a pouch according to another aspect of the present invention, the pouch has a continuous linear shape that includes at least a base material layer and a sealant layer, and extends in a length direction that penetrates the base material layer and does not penetrate the sealant layer. The step of preparing the original roll having the packaging material having the first opening guide wire, and the process of unwinding the packaging material from the original roll and cutting or cutting the packaging material in half along the length direction of the packaging material. With the step of half-folding and the first sealing portion extending in the length direction by heat-sealing the packaging material in a state where the half-cut or half-folded packaging materials are overlapped so that the sealant layers face each other. During the step of forming a plurality of second sealing portions extending in the width direction of the packaging material at predetermined intervals to continuously obtain a plurality of sealed bags and the step of obtaining the packaging material, the packaging material. It is provided with a step of filling the contents in between, a step of forming an opening starting means including a notch or a notch at a predetermined position of each of the second seal portions, and a step of individualizing the bag body. In the original roll, the first opening guide wire is formed in a first region which is a half region in the width direction of the packaging material, and the first opening guide wire is the same as the packaging material. Each of the first virtual lines in the first region, which is a virtual line connecting the inner edges of the opening starting means, is inclined so as to widen the distance between the first ends extending in the length direction. , And on the side of the first end portion of the packaging material, which is located between the two first inclined line portions intersecting the first virtual line and the first inclined line portion and extends in the length direction of the packaging material. A pouch having a convex line portion that is convex toward the end, and the position of the first end portion side of the convex line portion is located closer to the first end portion side than the first virtual line. Manufacturing method is provided.

In the method for producing a pouch, the packaging material in the raw fabric roll contains at least a base material layer and a sealant layer, and extends in a length direction that penetrates the base material layer and does not penetrate the sealant layer. It further has two opening guide wires, and the second opening guide wire is formed in a second region in which the first opening guide wire is not formed in the half region in the width direction of the packaging material. Moreover, the second opening guide line is a virtual line connecting the inner edges of the opening starting means so that the distance between the second opening guide lines becomes wider toward the first end side extending in the length direction of the packaging material. It has two continuous linear second inclined line portions that are inclined with respect to the second virtual line in the region of 2 and intersect with the second virtual line, respectively, and the second inclined line portion is the said. It may be formed so as to overlap with the first inclined line portion when the packaging materials are half-cut or half-folded along the length direction and the packaging materials are overlapped with each other.

According to the pouch of one aspect and the other aspect of the present invention and the method of producing the pouch of the other aspect, it is possible to provide a pouch in which the front surface and the back surface can be easily picked when opened.

It is a front view of the pouch which concerns on 1st Embodiment. It is a rear view of the pouch shown in FIG. It is a front view for demonstrating the dimension of each component of the pouch shown in FIG. It is a back view for demonstrating the dimension of each component of the pouch shown in FIG. It is a figure which shows the other opening start means which concerns on 1st Embodiment. It is a figure which shows the shape of another 1st opening guide wire which concerns on 1st Embodiment. It is sectional drawing of the packaging material used for the pouch which concerns on 1st Embodiment. It is a rear view of another pouch which concerns on 1st Embodiment. It is a rear view of another pouch which concerns on 1st Embodiment. It is a front view of another pouch which concerns on 1st Embodiment. FIG. 10 is a rear view of the pouch shown in FIG. It is a front view of another pouch which concerns on 1st Embodiment. It is a front view of another pouch which concerns on 1st Embodiment. It is a front view of another pouch which concerns on 1st Embodiment. It is a schematic diagram which shows the state when the pouch shown in FIG. 1 is opened. It is a figure which shows typically the manufacturing process of the pouch shown in FIG. It is a figure which shows typically the manufacturing process of the pouch shown in FIG. It is a figure which shows typically the manufacturing process of the pouch shown in FIG. It is a figure which shows typically the manufacturing process of the pouch shown in FIG. It is a figure which shows typically the manufacturing process of the pouch shown in FIG. It is a figure which shows typically the manufacturing process of the pouch shown in FIG. It is a figure which shows typically the manufacturing process of the pouch shown in FIG. It is a figure which shows typically the manufacturing process of the pouch shown in FIG. It is a front view of the pouch which concerns on 2nd Embodiment. It is a rear view of the pouch shown in FIG. 24. It is a front view for demonstrating the dimension of each component of the pouch shown in FIG. 24. FIG. 24 is a rear view for explaining the dimensions of each component of the pouch shown in FIG. 24. It is a figure which shows the state when the pouch shown in FIG. 24 is opened. FIG. 24 is a plan view of a packaging material used in the manufacturing process of the pouch shown in FIG. 24.

[First Embodiment]
Hereinafter, the pouch according to the first embodiment of the present invention will be described with reference to the drawings. 1 is a front view of the pouch according to the present embodiment, FIG. 2 is a rear view of the pouch according to the present embodiment, and FIG. 3 is for explaining the dimensions of each component of the pouch shown in FIG. It is a front view, and FIG. 4 is a rear view for explaining the dimensions of each component of the pouch shown in FIG. FIG. 5 is a diagram showing another opening starting means according to the present embodiment, FIG. 6 is a diagram showing the shape of another first opening guide line according to the present embodiment, and FIG. 7 is a diagram showing the shape of the other first opening guide line according to the present embodiment. It is sectional drawing of the packaging material used for a pouch. 8 and 9 are rear views of the other pouch according to the present embodiment, and FIGS. 10 and 12 to 14 are front views of the other pouch according to the present embodiment. 11 is a rear view of the pouch shown in FIG. 10, FIG. 15 is a schematic view showing a state when the pouch according to the present embodiment is opened, and FIGS. 18 to 19 are views of the pouch shown in FIG. 20 is a diagram schematically showing a manufacturing process, FIGS. 20 and 21 are diagrams schematically showing a manufacturing process of a pouch shown in FIG. 10, and FIGS. 22 and 23 are diagrams showing a manufacturing process of a pouch shown in FIG. It is a figure which shows schematically.

<<< Pouch >>>
The pouch 10-1 shown in FIG. 1 has a storage space for accommodating the content C. The content C is not particularly limited, and examples thereof include patches containing percutaneous penetrating agents such as external analgesia and anti-inflammatory agents, insect repellent patches, foods such as health foods, and tea bags such as green tea. Be done.

The pouch 10-1 has a front surface 11 and a back surface 12. The length L1 of the pouch 10-1 (see FIG. 3) is not particularly limited, but may be, for example, 80 mm or more and 200 mm or less. The width W1 (see FIG. 3) of the pouch 10-1 is not particularly limited, but may be, for example, 100 mm or more and 300 mm or less.

The pouch 10-1 has a first end portion 13, a second end portion 14 opposite to the first end portion 13, and a third end portion 15 extending between the first end portion 13 and the second end portion 14. And has a fourth end portion 16 extending between the first end portion 13 and the second end portion 14 and opposite to the third end portion 15.

The pouch 10-1 has an end seal portion 17 formed on the first end portion 13, an end seal portion 18 formed on the second end portion 14, and an end seal formed on the third end portion 15. A portion 19 and an end seal portion 20 formed on the fourth end portion 16 are provided. Further, the pouch 10-1 includes opening start means 21, 22, a first opening guide line 23, and a second opening guide line 24.

<< End seal part >>
The end sealing portions 17 to 20 are portions in which a part of the packaging material 30 constituting the front surface 11 and a part of the packaging material 30 constituting the back surface 12 are joined to each other. The end sealing portions 17 to 20 are formed by heat-sealing the packaging materials 30 to each other.

The width W2 (see FIG. 3) of the end sealing portions 17 to 20 is preferably, for example, 5 mm or more and 15 mm or less, respectively. If the width of each of these sealing portions is 5 mm or more, it can be reliably sealed, and if it is 15 mm or less, it is possible to suppress the narrowing of the accommodation space. In the present specification, the "width" in each seal portion means the length in the direction orthogonal to the extending direction of the seal portion. If the width of the seal portion is not constant, the width of the seal portion is set to the shortest value among the lengths in the direction orthogonal to the extending direction of the seal portion.

<< Means for starting opening >>
The opening start means 21 and 22 function as a starting point at the time of opening. The opening starting means 21 is formed on the end sealing portion 19, and the opening starting means 22 is formed on the end sealing portion 20. By forming the opening start means 21 and 22 on the end sealing portions 19 and 20, the pouch 10-1 can be easily opened from either the end sealing portion 19 side or the end sealing portion 20 side. .. The virtual line IL connecting between the inner edge 21A of the opening starting means 21 and the inner edge 22A of the opening starting means 21 is along the width direction DR1 of the pouch 10-1.

The opening start means 21 and 22 are V-shaped notches as notches. The opening start means 21 and 22 may be a notch (see FIG. 5A) or may be a notch of another shape such as a U-shaped notch (see FIG. 5B).

<< 1st opening guide line >>
The first opening guide line 23 is formed on the front surface 11. In FIG. 1, the first opening guide wire 23 is formed on the front surface 11, but may be formed on the back surface instead of the front surface. That is, the first opening guide wire may be formed on the front surface or the back surface.

The first opening guide wire 23 has a continuous linear shape. As used herein, the term "continuous line" is a concept that does not include a broken line. When the opening guide line is a broken line, there is a possibility that the breaking line may deviate from the opening guide line between the lines of the opening guide line at the time of opening, but since the first opening guide line 23 is a continuous line, The broken line does not easily come off from the first opening guide line 23 at the time of opening.

The first opening guide line 23 is a line that penetrates the base material layer 31 described later and does not penetrate the sealant layer 32. When the packaging material 30 further includes a metal foil layer 35 between the base material layer 31 and the sealant layer 32, the metal foil layer 35 maintains the barrier property of the accommodation space, so that the first opening guide wire 23 is a metal foil. It is necessary that it does not penetrate the layer 35. The first opening guide wire 23 can be formed by a laser.

The first opening guide line 23 extends in the width direction DR1 of the pouch 10-1, and is formed so as to intersect the virtual line IL. Further, it is preferable that the first opening guide wire 23 is formed in a region between the inner edge 17A of the end sealing portion 17 and the content C. The end seal portion is hard and difficult to break, and if the break line collides with the contents when opened, the break may stop at the contents, but the inner edge 17A and the contents C of the end seal portion 17 Since the region between the and is an unsealed portion and the breaking line can be prevented from colliding with the contents, it is possible to prevent the opening from becoming difficult.

The first opening guide line 23 has two first inclined line portions 23A and 23B and a convex wire portion 23C located between the first inclined line portions 23A and 23B. The first opening guide line 23 shown in FIG. 1 is formed on a first inclined line portion 23A, a first reference line portion 23D connected to the convex line portion 23C, a first inclined line portion 23B, and a convex line portion 23C. It further has a connected first reference line portion 23E. The first opening guide wire 23 having such a shape is suitable for high-speed processing because it can be processed by a laser while flowing the packaging material at a predetermined speed without returning the laser head to the flow direction of the packaging material. ing. The first opening guide line 23 shown in FIG. 1 has first reference line portions 23D and 23E, but as shown in FIG. 6A, the first opening guide line 23 has a first reference line. It does not have to have a part. In this case, the convex wire portion 23C is connected to the first inclined wire portions 23A and 23B.

<1st inclined line part>
The first inclined line portions 23A and 23B are inclined with respect to the virtual line IL and intersect with the virtual line IL, respectively. Further, the first inclined line portions 23A and 23B are formed so that the distance between the first inclined line portions 23A and 23B becomes narrower toward the first end portion 13 of the pouch 10-1. By forming such first inclined line portions 23A and 23B, when the opening is opened from the opening starting means 21, the breaking line of the front surface 11 is cut on the first end portion 13 side by the first inclined line portion 23A. Also, even when the package is opened from the opening start means 22, the break line of the front surface 11 can be pulled up to the first end portion 13 side by the first inclined line portion 23B.

The upper limit of the angles α1 and α2 of the first inclined line portions 23A and 23B with respect to the virtual line IL may be less than 90 °, but is preferably less than 45 °. If the angles α1 and α2 are less than 45 °, it is possible to suppress that the force applied in the direction of escape in the vertical direction is larger than the force applied in the opening direction, so that the force is torn along the first inclined line portions 23A and 23B. be able to. The lower limit of the angles α1 and α2 may exceed 0 °, but is preferably 15 ° or more from the viewpoint of effectively pulling up the break line of the front surface 11. As used herein, the "angle of the first inclined line portion with respect to the virtual line" means the smaller angle of the angle formed by the first inclined line portion and the virtual line.

The first inclined line portions 23A and 23B may be curved, but are preferably linear. Since the first inclined line portions 23A and 23B are linear, the processing time of the first inclined line portions 23A and 23B can be shortened, and since they have a simple shape, they are along the first inclined line portions 23A and 23B. Can be easily torn. The length L2 (see FIG. 3) of the first inclined line portions 23A and 23B is not particularly limited, but may be, for example, 10 mm or more and 30 mm or less.

<Convex line part>
The convex line portion 23C is located between the first inclined line portion 23A and the first inclined line portion 23B. The convex line portion 23C is convex toward the second end portion 14 side of the pouch 10-1. The position 23C1 on the second end 14 side of the convex line portion 23C is located on the second end 14 side of the virtual line IL. As a result, when the package is opened, a large dent can be formed on the front surface 11, so that a large step can be formed on the front surface 11 and the back surface 12.

The distance d1 (see FIG. 3) between the position 23C1 on the second end 14 side of the convex line portion 23C and the second reference line portion 24C described later of the second opening guide line 24 shall be 3 mm or more. Is preferable. If this distance is 3 mm or more, a large step can be formed between the front surface 11 and the back surface 12 when the package is opened.

The convex line portion 23C shown in FIG. 1 has a semi-elliptical shape, but the shape of the convex line portion 23C is not particularly limited, and is, for example, a curve such as a semicircular shape (see FIG. 6B). It may be a shape or a polygonal line such as a V shape (see 6 (C)).

<1st reference line part>
The first reference line portions 23D and 23E are lines substantially parallel to the virtual line IL. The first reference line portion 23D shown in FIG. 1 is connected to the first inclined line portion 23A and the convex line portion 23C, and the first reference line portion 23E is connected to the first inclined line portion 23B and the convex line portion 23C. It is connected. By forming the first reference line portions 23D and 23E, it becomes easy to visually confirm the position of the convex line portion 23C. The length L3 (see FIG. 3) of the first reference line portions 23D and 23E is not particularly limited, but may be, for example, 10 mm or more and 50 mm or less.

<< Second opening guide line >>
The second opening guide wire 24 is formed on the front surface 11 and the back surface 12 on which the first opening guide wire 23 is not formed. Since the first opening guide wire 23 is formed on the front surface 11, the second opening guide wire 24 is formed on the back surface 12 as shown in FIG. When the first opening guide wire is formed on the back surface, the second opening guide wire is formed on the front surface.

The second opening guide wire 24 has a continuous linear shape. Since the second opening guide line 24 is a continuous line, the break line on the back surface 12 side does not easily come off from the second opening guide line 24 at the time of opening. If the second inclined line portions 24A and 24B, which will be described later, are continuous linear as in the pouch 10-2 shown in FIG. 8, the second opening guide wire 24 does not have to be continuous linear. ..

The second opening guide line 24 is a line that penetrates the base material layer 31 described later and does not penetrate the sealant layer 32. When the packaging material 30 further includes a metal foil layer 35 between the base material layer 31 and the sealant layer 32, the metal foil layer 35 maintains the barrier property of the accommodation space, so that the second opening guide wire 24 is a metal foil. It is necessary that it does not penetrate the layer 35. The second opening guide wire 24 can be formed by a laser in the same manner as the first opening guide wire 23.

The second opening guide line 24 extends in the width direction DR1 of the pouch 10-1 and is formed so as to intersect the virtual line IL. Further, the second opening guide wire 24 is formed in the region between the inner edge 17A of the end sealing portion 17 and the content C for the same reason as described in the column of the first opening guide wire 23. ..

The second opening guide wire 24 has two continuous linear second inclined wire portions 24A and 24B. The second opening guide wire 24 shown in FIG. 2 further has a continuous linear second reference line portion 24C connected to the second inclined wire portions 24A and 24B. The second opening guide wire 24 having such a shape is suitable for high-speed processing because it can be processed by a laser while flowing the packaging material at a predetermined speed without returning the laser head to the flow direction of the packaging material. ing.

<Second inclined line part>
The second inclined line portions 24A and 24B are inclined with respect to the virtual line IL and intersect with the virtual line IL, respectively. Further, the second inclined line portions 24A and 24B are formed so that the distance between the second inclined line portions 24A and 24B becomes narrower toward the first end portion 13 of the pouch 10-1. By forming such second inclined line portions 24A and 24B, when the opening is opened from the opening starting means 21, the breaking line of the back surface 12 is pulled up to the first end portion 13 side by the second inclined line portion 24A. Also, even when the package is opened from the opening start means 22, the breaking line of the back surface 12 can be pulled up to the first end portion 13 side by the second inclined line portion 24B.

The upper limit of the angles α3 and α4 of the second inclined line portions 24A and 24B with respect to the virtual line IL may be less than 90 °, but for the same reason as described in the columns of the first inclined line portions 23A and 23B. It is preferably less than 45 °. Further, the lower limit of the angles α3 and α4 may also exceed 0 °, but is preferably 15 ° or more for the same reason as described in the columns of the first inclined line portions 23A and 23B.

The second inclined line portions 24A and 24B may be curved, but are preferably linear for the same reason as described in the columns of the first inclined line portions 23A and 23B. The length L4 (see FIG. 4) of the second inclined line portions 24A and 24B is not particularly limited, but may be, for example, 10 mm or more and 30 mm or less.

The second inclined line portion 24A shown in FIG. 2 is formed at a position corresponding to the first inclined line portion 23A, and the second inclined line portion 24B is formed at a position corresponding to the first inclined line portion 23B. ing. By forming the second inclined line portions 24A and 24B at such positions, the breaking line of the front surface 11 and the breaking line of the back surface 12 overlap with each other when the second inclined line portion 24A is opened. It is possible to prevent it from being mistaken for a pinch.

<Second reference line part>
The second reference line portion 24C is a line substantially parallel to the virtual line IL. By forming such a second reference line portion 24C, the back surface 12 can be torn along the second reference line portion 24C. The length L5 (see FIG. 4) of the second reference line portion 24C is not particularly limited, but may be, for example, 50 mm or more and 250 mm or less.

The pouch 10-1 is composed of the packaging material 30. As shown in FIG. 7, the packaging material 30 includes at least a base material layer 31 and a sealant layer 32. In addition to the base material layer 31 and the sealant layer 32, the packaging material 30 may further include a functional layer exhibiting a desired function between the base material layer 31 and the sealant layer 32. Specifically, the ink layer 33, the bonding layer 34, the metal foil layer 35, and the bonding layer 36 may be provided between the substrate layer 31 and the sealant layer 32 in this order from the substrate layer 31.

<Base layer>
The base material layer 31 is not particularly limited, and examples thereof include a stretched plastic film, a plastic film such as cellophane, and paper. Examples of the stretched plastic film include polyester such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), polyamide such as nylon 6, nylon 6.6, nylon 12, nylon 6.66 copolymer (Ny), or Examples thereof include a film made of polypropylene (PP) or the like. Further, the base material layer may have a single-layer structure, but may have a multi-layer structure of two or more layers. When the base material layer has a multi-layer structure, a bonding layer may be interposed between the base material layers.

The stretched plastic film is preferably subjected to a biaxial stretching treatment. As a result, the molecules constituting the plastic film are lined up in the stretching direction by the stretching treatment, so that the plastic film exhibits excellent dimensional stability. Further, the biaxial stretching treatment can impart easy-opening property to the plastic film.

The thickness of the base material layer 31 is preferably 6 μm or more and 40 μm or less. When the thickness of the base material layer 31 is 6 μm or more, the metal foil layer 35 can be protected and printed, and when the thickness is 40 μm or less, processing at the time of bag making becomes easy. The lower limit of the thickness of the base material layer 31 is more preferably 12 μm or more, and the upper limit of the thickness of the base material layer 31 is more preferably 30 μm or less. The thickness of the base material layer shall be obtained by randomly measuring the thickness at 10 points from a cross-sectional photograph of the base material layer taken with an optical microscope and obtaining it as an arithmetic mean value of the measured thickness.

<Sealant layer>
The sealant layer 32 is for forming the end sealing portions 17 to 20. The sealant layer 32 can be made of a polyolefin such as polyethylene (PE) or polypropylene, or a resin having a sealing property such as polyester ether. The sealant layer 32 is preferably unstretched. The sealant layer 32 may have a single-layer structure or a multi-layer structure.

The thickness of the sealant layer 32 is preferably 10 μm or more and 60 μm or less. If the thickness of the sealant layer 32 is 10 μm or more, the sealing strength required for storing the contents can be maintained, and if it is 60 μm or less, processing during bag making becomes easy and good opening is performed. Can realize sex. The lower limit of the thickness of the sealant layer 32 is more preferably 20 μm or more, and the upper limit of the thickness of the sealant layer 32 is more preferably 40 μm or less. The thickness of the sealant layer 32 can be measured by the same method as the thickness of the base material layer 31.

<Ink layer>
The ink layer 33 is a layer containing a coloring material and a binder resin. By forming the ink layer 33, a pattern can be formed on the pouch 10-1. The "picture" in the present specification is not particularly limited, and includes, for example, a figure, a character, a pattern, a pattern, a symbol, a pattern, a mark, and the like.

The ink layer 33 may contain any other additives. Additives include, for example, lubricants, anti-blocking agents, fillers, hardeners, pigment dispersants, defoamers, leveling agents, waxes, silane coupling agents, preservatives, antioxidants, UV absorbers, rust inhibitors. Examples include agents, plasticizers, flame retardants, color developeres and the like. These additives are used for the purpose of improving printing suitability, printing effect, etc., and the type and amount of these additives can be appropriately selected depending on the printing method, printing substrate, and printing conditions. The ink layer 33 can be formed on the base material layer 31 by a printing method such as gravure printing.

(Color material)
The coloring material is not particularly limited, and known pigments and dyes can be used, and are appropriately selected according to a desired color.

(Binder resin)
Examples of the binder resin include amani oil, cutting oil, soybean oil, hydrocarbon oil, rosin, rosin ester, rosin-modified resin, shelac, alkyd resin, phenolic resin, maleic acid resin, natural resin, and hydrocarbon resin. Polyvinyl chloride resin, polyacetic acid resin, polystyrene resin, polyvinyl butyral resin, (meth) acrylic resin, polyamide resin, polyester resin, polyurethane resin, epoxy resin, urea resin, melamine resin, amino alkyd Examples thereof include based resins, nitrocellulose, ethyl cellulose, rubber chloride, cyclized rubber, polymers of (meth) acrylate compounds, or mixtures thereof.

<Metal leaf layer>
The metal foil layer 35 is for imparting gas barrier properties to the pouch 10-1. As the metal constituting the metal foil layer 35, aluminum, iron, copper, tin, or an alloy thereof is used from the viewpoint of gas barrier property that suppresses the transmission of oxygen and water vapor and light shielding property that suppresses the transmission of visible light and ultraviolet rays. Etc. can be used.

The thickness of the metal foil layer 35 is preferably 6 μm or more and 40 μm or less. When the thickness of the metal foil layer 35 is 6 μm or more, the gas barrier property can be ensured, and when the thickness is 40 μm or less, high-speed sealing property and good opening property can be realized. The lower limit of the thickness of the metal foil layer 35 is more preferably 7 μm or more, and the upper limit of the thickness of the metal foil layer 35 is more preferably 15 μm or less. The thickness of the metal foil layer can be measured by the same method as the thickness of the base material layer.

<Joining layer>
As used herein, the term "joining layer" is a concept that includes not only an adhesive layer but also an anchor coat layer. Examples of the bonding layers 34 and 36 include an anchor coat layer used in an extrusion laminating method (sandwich laminating method) and an adhesive layer used in a dry laminating method.

The anchor coat layer is a polyethylene resin, a polypropylene resin, a cyclic polyolefin resin, or a thermoplastic resin such as a copolymer resin containing these resins as a main component, a modified resin, or a mixture (including alloy). Examples thereof include a layer containing a resin, but a layer containing no resin may be used. Examples of the polymer-based resin include low-density polyethylene (LDPE), medium-density polyethylene (MDPE), high-density polyethylene (HDPE), linear (linear) low-density polyethylene (LLDPE), polypropylene (PP), and metallocene catalyst. Ethylene-α / olefin polymer polymerized using, random or block copolymer of ethylene / polypropylene, ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA), ethylene / Ethyl acrylate copolymer (EEA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methyl methacrylate copolymer (EMMA), ethylene-maleic acid copolymer, ionomer resin, and adhesion between layers. It is possible to use an acid-modified polyolefin resin obtained by modifying the above-mentioned polyolefin resin with an unsaturated carboxylic acid such as acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, and itaconic acid. can. Further, as the polyolefin resin, an unsaturated carboxylic acid, an unsaturated carboxylic acid anhydride, a resin obtained by graft-polymerizing or copolymerizing an ester monomer and the like can be used. These materials can be used alone or in combination of two or more. As the cyclic polyolefin resin, for example, a cyclic polyolefin such as an ethylene-propylene copolymer, polymethylpentene, polybutene, or polynorbonene can be used. These resins can be used alone or in combination of two or more.

As the adhesive layer, for example, an adhesive generally used in a dry laminating method known per se can be used, and for example, a polyvinyl acetate-based adhesive, a polyacrylic acid ester-based adhesive, a cyanoacrylate-based adhesive, or ethylene can be used. Copolymerization type adhesives, cellulose type adhesives, polyester type adhesives, polyamide type adhesives, amino resin type adhesives, epoxy type adhesives, polyurethane type adhesives and the like can be used. The polyurethane-based adhesive means a cured product of a polyol compound and an isocyanate compound.

<<< Other pouches >>>
The second opening guide line 24 of the pouch 10-1 shown in FIG. 2 has a second reference line portion 24C, but the second opening guide line 24 is like the pouch 10-2 shown in FIG. , It is not necessary to have a second reference line portion. In this case, the second inclined line portion 24A and the second inclined line portion 24B are separated from each other.

The pouch 10-1 shown in FIG. 1 has a second opening guide line 24 formed on the back surface 12, but it is not necessary to form the second opening guide line as in the pouch 10-3 shown in FIG. .. In this case, it is preferable that the tear propagation resistance of the back surface 12 in the first direction parallel to the virtual line IL is smaller than the tear propagation resistance in the second direction orthogonal to the first direction. By having such a relationship of tear propagation resistance, the back surface 12 can be torn along the virtual line IL without forming the second opening guide line 24, so that it is possible to suppress the occurrence of breakage. can. Such a back surface 12 can be made of a straight-cutting film. A straight-line cut film is a film that can be torn linearly in one direction. In the straight-cutting film, the tear propagation resistance in the MD direction (film flow direction) is smaller than the tear propagation resistance in the TD direction (direction orthogonal to the MD direction). The tear propagation resistance can be measured according to JIS K7128-2: 1998 using a light load tear tester (Toyo Seiki Seisakusho Co., Ltd.). Specifically, the tear propagation resistance first has a second direction orthogonal to the first direction and the first direction along a virtual line connecting the packaging material of the surface to be measured (for example, the back surface) to the inner edge of the opening starting means. A rectangular sample having a length of 75 mm and a width of 63 mm is taken in each direction, a notch of 20 mm from the end is made in the center of the width direction, and the indicated value when the remaining 43 mm is torn with a light load tear tester is read. The value of the tear propagation resistance is a value obtained by dividing the tear force (N) obtained from the indicated value by the thickness (mm) of the packaging material. The measurement is performed 10 times in each direction, and the average value is adopted. When the back surface 12 is made of a straight-cutting film, a straight-cutting film is used for at least one of the base material layer and the sealant layer. When a straight-cutting film is used as the base material layer, for example, an Emblet (registered trademark) PC manufactured by Unitika Ltd. can be used as the base material layer. The tear propagation resistance of the emblet (registered trademark) PC in the MD direction is 20 mN, and the tear propagation resistance in the TD direction is 30 mN.

The pouch 10-1 shown in FIG. 1 is manufactured by cutting one packaging material 30 in half as described later, but the pouch 10-1 shown in FIGS. 10 and 11 has two pouches 10-4. It may be composed of a packaging material. The pouch 10-4 is the same as the pouch 10-1 except that it is composed of the first packaging material 41 and the second packaging material 42.

The layer structure of the first packaging material 41 and the second packaging material 42 has the same layer structure as that of the packaging material 30. However, the first packaging material 41 has an opening guide wire 23, and the second packaging material 42 has an opening guide wire 24. The layer structure of the first packaging material 41 and the second packaging material 42 may be the same as each other, but may be different from each other.

The pouch 10-1 shown in FIG. 1 is a four-sided seal type pouch, but it may be a three-way seal type pouch like the pouch 10-5 shown in FIG. The pouch 10-5 is similar to the pouch 10-1 except that it does not have an end seal on the second end 14 side.

The pouch 10-1 shown in FIG. 1 does not have the resealable means, but may have the resealable means 51 as in the pouch 10-6 shown in FIG.

The resealable means 51 is for sealing the opening so as to be openable and closable after opening. By providing the resealable means 51, it is possible to prevent the contents from drying after opening. The resealable means 51 is provided so as to be substantially parallel to the virtual line IL. Examples of the resealable means 51 include a chuck tape.

The chuck tape includes a male tape member and a female tape member that can be fitted with the male tape member. When a chuck tape is used as the resealable means 51, one of the male tape member and the female tape member is attached to the inner surface of the front surface, and the other of the male tape member and the female tape member is attached to the back surface. Attach to the inner surface of.

The pouch 10-1 shown in FIG. 1 does not have a gusset folding portion, but may have a gusset folding portion 61 as in the pouch 10-7 shown in FIG. In the pouch 10-7 shown in FIG. 14, the gusset folding portion 61 is provided on the second end portion 14 side. By providing the gusset folding portion 61 at the second end portion 14, more contents can be accommodated and the gusset can be made self-supporting.

In the pouch 10-1 of the present embodiment, when the pouch 10-1 is opened from the opening start means 21, the breaking line on the front surface 11 side is opened in the opening direction DR2 until it hits the first opening guide line 23 (FIG. 15). Then, when the break line on the front surface 11 side hits the first inclined line portion 23A of the first opening guide line 23, it is guided to the first end portion 13 side along the first inclined line portion 23A, and then. , The first reference line portion 23D, the convex line portion 23C, and the first reference line portion 23E. On the other hand, the break line on the back surface 12 side proceeds in the opening direction DR2 until it hits the second opening guide line 24. Then, when the break line on the back surface 12 side hits the second inclined line portion 24A of the second opening guide line 24, it is guided to the first end portion 13 side along the second inclined line portion 24A, and then the second Proceed along the reference line portion 24C. Therefore, in the pouch 10-1 of the present embodiment, when the pouch 10-1 is opened from the opening start means 21, a portion where the break line on the front surface 11 side is lower than the break line on the back surface 12 side is formed. Therefore, as shown in FIG. 15, a recess 11A is formed on the front surface 11. This makes it possible to form a step. Even if the pouch 10-1 is opened from the opening start means 22, a similar step can be formed. Further, the pouch 10-4, 10-5, 10-6, 10-7 can also form a step in the same manner as the pouch 10-1.

In the pouch 10-2, since the first opening guide line 23 is formed on the front surface 11, the break line of the front surface 11 proceeds in the same manner as the pouch 10-1. On the other hand, since the second opening guide line 24 is also formed on the back surface 12, the break line of the back surface 12 advances along the second inclined line portion 24A, but the second opening guide line 24 is the second reference line portion. Since it does not have, after advancing to the upper end of the second inclined line portion 24A, it proceeds as it is. Therefore, even in the pouch 10-2 of the present embodiment, when the pouch 10-1 is opened from the opening start means 21, a portion where the break line on the front surface 11 side is lower than the break line on the back surface 12 side is formed. Therefore, a recess is formed on the front surface 11. This makes it possible to form a step. Even if the pouch 10-2 is opened from the opening start means 22, a similar step can be formed.

In the pouch 10-3, since the first opening guide wire 23 is formed on the front surface 11, the break line of the front surface 11 proceeds in the same manner as the pouch 10-1, but on the back surface 12. Since the second opening guide line is not formed, the break line on the back surface 12 proceeds as it is. Even if the break line of the back surface 12 progresses as it is, the break line of the front surface 11 is pulled up to the first end portion 13 side by the first inclined line portion 23A, so that the break line of the back surface 12 is used. A high part and a low part are formed. This makes it possible to form a step.

According to the present embodiment, since the pouch 10-1 is formed with the first opening guide line 23 having the first inclined line portions 23A and 23B and the convex line portion 23C, the opening starting means 21 and the opening start are started. Regardless of which of the means 22 is opened, the break line on the front surface 11 side and the break line on the back surface 12 proceed as described above. A step can be formed. As a result, when the package is opened, a grip portion is formed on the back surface 12, so that the front surface 11 and the back surface 12 can be easily picked. Similarly, even if the pouches 10-4, 10-5, 10-6, and 10-7 are opened from any of the opening starting means 21 and 22, the break line on the front surface 11 side is the same as that of the pouch 10-1. Since the breaking line on the back surface 12 side advances, the front surface 11 and the back surface 12 can be easily picked up when the package is opened, as in the case of the pouch 10-1.

Also in the pouches 10-2 and 10-3, since the first opening guide line 23 having the first inclined line portions 23A and 23B and the convex line portion 23C is formed, the opening starting means 21 and the opening starting means 22 Regardless of which one is opened, the break line on the front surface 11 side and the break line on the back surface 12 proceed as described above, so that a step is formed by the break line on the front surface 11 and the break line on the back surface 12. can do. As a result, when the package is opened, a grip portion is formed on the back surface 12, so that the front surface 11 and the back surface 12 can be easily picked.

<< Manufacturing method of pouch >>
Such a pouch 10-1 can be manufactured as follows. First, a raw roll 71 wrapped with a packaging material 30 is prepared (see FIG. 16A). The packaging material 30 is preliminarily formed with a first opening guide wire 23 and a second opening guide wire 24 extending in the length direction DR3 by a laser.

In the packaging material 30 wound on the original roll 71, the first opening guide wire 23 is formed in the first region R1 which is a half region of the width direction DR4 of the packaging material 30 and is formed in the second region R1. The opening guide wire 24 is formed in the second region R2, which is the other half region of the DR4 in the width direction of the packaging material 30. The first region R1 is the region to be the front surface 11, the second region R2 is the region to be the back surface 12, the first region R1 is the region to be the back surface, and the second region R2 is the front surface. Area may be.

Further, in the packaging material 30, the first inclined line portions 23A and 23B of the first opening guide wire 23 are narrowly spaced from each other toward the first end portion 30A extending in the length direction DR2 of the packaging material 30. The first virtual line IL1 in the first region R1 which is the virtual line IL connecting the inner edges 21A and 22A of the opening start means 21 and 22 is inclined to the first virtual line IL1 and intersects the first virtual line IL1 respectively. is doing.

In the packaging material 30, the convex wire portion 23C of the first opening guide wire 23 is located between the first inclined wire portions 23A and 23B, and the first end portion 30A extending in the length direction DR3 of the packaging material 30. It has a convex shape toward the second end 30B side on the opposite side to the above. Further, the position of the convex line portion 23C on the second end portion 30B side is located closer to the second end portion 30B than the first virtual line IL1.

Further, in the packaging material 30, the second inclined line portions 24A and 24B of the second opening guide wire 24 are narrowly spaced from each other toward the second end portion 30B extending in the length direction DR3 of the packaging material 30. The second virtual line IL2 and the second virtual line IL2 in the second region R2, which is the virtual line IL connecting the inner edges 21A and 22A of the opening start means 21 and 22, are inclined respectively. They are crossing each other. Since the pouch 10-1 is formed by cutting the packaging material 30 in half along the length direction D2 and overlapping the packaging materials 30, the first virtual line IL1 and the second virtual line IL2 are both virtual lines. It is a line that becomes IL. Further, in the second opening guide wire 24, when the packaging material 30 is cut in half along the DR2 in the length direction and the packaging materials 30 are overlapped with each other, the second inclined line portion 24A overlaps with the first inclined line portion 23A. Further, the second inclined line portion 24B is formed at a position overlapping with the first inclined line portion 23B.

The laser for forming the first opening guide wire 23 and the second opening guide wire 24 is not particularly limited, but a carbon dioxide gas laser, a YAG laser, a semiconductor laser, an argon ion laser and the like can be used.

After preparing such a raw roll 71, the packaging material 30 is unwound from the raw roll 71, and the packaging material 30 is cut in half along the length direction DR3 of the packaging material 30 by the cutting device 81. See FIG. 16 (B)).

After the packaging material 30 is cut in half, the packaging materials 30 are overlapped with each other so that the sealant layers 32 face each other and the first virtual line IL1 and the second virtual line IL2 overlap each other. Then, the content C is filled between the packaging materials 30 (see FIG. 17 (A)). Next, in a state where the packaging materials 30 are overlapped, the first end portion 30A and the second end portion 30B extending in the length direction DR3 of the packaging material 30 are heat-sealed using the first sealing roll 82, and the packaging material 30 is heat-sealed. The third end portion 30C and the fourth end portion 30D formed by the half cut are heat-sealed to form a first seal portion 72 having a predetermined width extending in the length direction DR3 (see FIG. 17B). The first seal portion 72 is a portion that becomes the end seal portions 17 and 18 of the pouch 10-1 after the bag body 74, which will be described later, is separated into individual pieces.

Further, using the second sealing roll 83, the packaging material 30 is heat-sealed to the width direction DR4 of the packaging material 30 at predetermined intervals to form a plurality of second sealing portions 73 having a predetermined width extending in the width direction DR4. Then, a plurality of sealed bags 74 are continuously obtained (see FIG. 18A). The second seal portion 73 is a portion that becomes the end seal portions 19 and 20 of the pouch 10-1 after the bag body 74 is separated into individual pieces.

After obtaining the bag body 74, through holes 75 are formed in the second seal portions 73 of the bag body 74, respectively (see FIG. 18B). A notch may be formed instead of the through hole 75. The through hole 75 is a portion that becomes the opening start means 21 and 22 of the pouch 10-1 after the bag body 74 is separated into individual pieces.

Finally, the bag body 74 is cut along the width direction DR4 at a position where the through hole 75 of the second seal portion 73 is divided into two by the cutting device 84, and the bag body 74 is separated into individual pieces (see FIG. 19). As a result, the end sealing portions 17 to 19 and the opening starting means 21 and 22 are formed, and the pouch 10-1 shown in FIG. 1 is obtained.

The pouch 10-1 is formed by cutting one packaging material 30 in half to form the pouch 10-1, but the pouch 10 formed by using the two first packaging material 41 and the second packaging material 42. -4 can be produced by the following method.

First, a first raw fabric roll 91 wrapped with the first packaging material 41 and a second raw fabric roll 92 wrapped with the second packaging material 42 are prepared (see FIGS. 20A and 20B). The first packaging material 41 is previously formed with an opening guide wire 23 extending in the length direction DR3 by a laser, and the second packaging material 42 is previously formed with an opening guide extending in the length direction DR3 by a laser. The line 24 is formed.

In the first packaging material 41 of the first original roll 91, the first inclined line portions 23A and 23B of the first opening guide wire 23 are directed toward the first end portion 41A extending in the length direction DR3 of the packaging material 41. The first virtual line IL1 in the first region R1 which is the virtual line IL connecting the inner edges 21A and 22A of the opening start means 21 and 22 is inclined to the first virtual line IL1 so as to narrow the distance between the two. It intersects the virtual line IL1 respectively.

In the packaging material 41, the convex wire portion 23C of the first opening guide wire 23 is located between the first inclined wire portions 23A and 23B, and the first end portion 41A extending in the length direction DR3 of the packaging material 41. It has a convex shape toward the second end 41B on the opposite side. Further, the position of the convex line portion 23C on the second end portion 41B side is located closer to the second end portion 41B than the first virtual line IL1.

In the second packaging material 42 of the second original roll 92, the second inclined line portions 24A and 24B of the second opening guide wire 24 are directed toward the first end portion 42A extending in the length direction DR2 of the packaging material 41. The second virtual line IL2, which is the virtual line IL connecting the inner edges 21A and 22A of the opening start means 21 and 22, is inclined so as to narrow the distance between the two, and the second virtual line IL2. They are crossing each other. Since the pouch 10-4 is formed by stacking the packaging materials 41 and 42, the first virtual line IL1 and the second virtual line IL2 are both lines that become virtual line IL. Further, in the second opening guide wire 24, when the first packaging material 41 and the second packaging material 42 are overlapped so that the DR3 in the length direction coincides, the second inclined line portion 24A becomes the first inclined line portion. The second inclined line portion 24B is formed at a position overlapping the 23A and the first inclined line portion 23B.

After preparing the first raw fabric roll 91 and the second raw fabric roll 92, the first packaging material 41 is unwound from the first raw fabric roll 91, and the second packaging material 42 is unwound from the second raw fabric roll 92. Then, the first packaging material 41 and the second packaging material 42 are overlapped so that the sealant layers face each other. In the first packaging material 41 and the second packaging material 42, the DR3 in the length direction coincides, the second inclined line portion 24A overlaps with the first inclined line portion 23A, and the second inclined line portion 24B is the first inclined line portion. It is superposed so as to overlap with 23B.

Next, in a state where the first packaging material 41 and the second packaging material 42 are overlapped with each other, the content C is filled between the first packaging material 41 and the second packaging material 42 (see FIG. 21 (A)). Then, in the same manner as described above, the end portion 41A of the first packaging material 41 extending in the length direction DR3 and the end portion 42A of the second packaging material 42 are heat-sealed using the first sealing roll 82, and the second packaging material 42 is heat-sealed. The end portion 41B of the first packaging material 41 and the end portion 42B of the second packaging material 42 are heat-sealed to form a first sealing portion 72 having a predetermined width extending in the length direction DR3 (see FIG. 21B). .. The first seal portion 72 is a portion that becomes the end seal portions 17 and 18 of the pouch 10-4 after the bag body 74 is separated into individual pieces.

Further, using the second sealing roll 83, the packaging materials 41 and 42 are heat-sealed to the width direction DR4 of the packaging materials 41 and 42 at predetermined intervals, and a plurality of second seals having a predetermined width extending in the width direction DR4 are used. The portion 73 is formed to obtain a sealed bag body 74 (see FIG. 21 (C)). The second seal portion 73 is a portion that becomes the end seal portions 19 and 20 of the pouch 10-4 after the bag body 74 is separated into individual pieces.

After that, in the same manner as described above, through holes are formed in the second seal portions 73 of the bag body 74, respectively, and the through holes of the second seal portion 73 are divided into two by a cutting device along the width direction DR4. The bag body 74 is cut and separated into individual pieces. As a result, the end sealing portions 17 to 19 and the opening starting means 21 and 22 are formed, and the pouch 10-4 shown in FIG. 10 is obtained.

Since the pouch 10-1 is a four-sided seal type pouch, it is manufactured by the above-mentioned manufacturing method, but the three-way seal type pouch 10-5 can be manufactured by, for example, the following method. Hereinafter, an example of manufacturing the pouch 10-5 by a vertical three-way seal packaging machine will be shown.

First, the raw roll 71 around which the packaging material 30 having the opening guide wire 23 used in the manufacturing process of the pouch 10-1 is wound is prepared. After preparing the raw roll 71, the packaging material 30 is unwound from the raw roll 71, and the packaging material 30 is half-folded along the length direction DR3 of the packaging material 30 so that the sealant layers 32 face each other (FIG. 22 (A)).

With the packaging material 30 half-folded, the first sealing roll 82 is used to heat-seal both ends 30A and 30B extending in the length direction DR3 of the packaging material 30, and a predetermined width extending in the length direction DR3. First seal portion 72 is formed (see FIG. 22 (B)). The first seal portion 72 is a portion that becomes the end seal portion 17 of the pouch 10-5 after the bag body 76 is separated into individual pieces.

Further, using the second sealing roll 83, the packaging materials 30 are heat-sealed to the width direction DR4 of the packaging material 30 at predetermined intervals to form a second sealing portion 73 having a predetermined width extending in the width direction DR4. To obtain a sealed bag body 76 (see FIG. 23). The second seal portion 73 is a portion that becomes the end seal portions 19 and 20 of the pouch 10-5 after the bag body 76 is separated into individual pieces.

Further, the content C is filled during the process of obtaining the bag body 76. Specifically, when attention is paid to one bag body 76, the content C is filled in a state where one second seal portion 73 is formed.

After that, in the same manner as described above, through holes are formed in the second seal portions 73 of the bag body 76, respectively, and the through holes in the second seal portion 73 are divided into two by a cutting device along the width direction DR4. The bag body 76 is cut and separated into individual pieces. As a result, the end sealing portions 17 to 19 and the opening starting means 21 and 22 are formed, and the pouch 10-5 shown in FIG. 12 is obtained.

[Second Embodiment]
Hereinafter, the pouch according to the second embodiment of the present invention will be described with reference to the drawings. 24 is a front view of the pouch according to the present embodiment, FIG. 25 is a rear view of the pouch shown in FIG. 24, and FIG. 26 is for explaining the dimensions of each component of the pouch shown in FIG. 24. It is a front view, and FIG. 27 is a rear view for explaining the dimensions of each component of the pouch shown in FIG. 24. FIG. 28 is a view showing a state when the pouch according to the present embodiment is opened, and FIG. 29 is a plan view of a packaging material used in the manufacturing process of the pouch according to the present embodiment. In FIGS. 24 to 29, the members having the same reference numerals as those in FIGS. 1 and the like are the same as the members shown in FIGS. 1 and the like, and thus the description thereof will be omitted.

<<< Pouch >>>
Similar to the pouch 10-1, the pouch 10-8 shown in FIGS. 24 and 25 has a continuous linear first opening guide line 101 formed on the front surface 11 and a second opening on the back surface 12. Although the guide wire 102 is formed, the arrangement of the first opening guide wire 101 and the second opening guide wire 102 is different from that of the first opening guide wire 23 and the second opening guide wire 24. In FIG. 24, the first opening guide line 101 is formed on the front surface 11, but may be formed on the back surface instead of the front surface. That is, the first opening guide wire may be formed on the front surface or the back surface.

The length L1 of the pouch 10-8, the width W2, and the width W2 of the end seal portions 17 to 20 (see FIG. 26) are the widths of the pouch 10-1 length L1, the width W2, and the end seal portions 17 to 20. Since it is the same as W2, the description thereof will be omitted here.

<< 1st opening guide line >>
The first opening guide line 101 is a line that penetrates the base material layer and does not penetrate the sealant layer. When the packaging material further includes a metal leaf layer between the base material layer and the sealant layer, the metal leaf layer maintains the barrier property of the accommodation space, so that the first opening guide wire 101 penetrates the metal foil layer. It is necessary not to. The first opening guide wire 101 can be formed by a laser.

The first opening guide line 101 extends in the width direction DR1 of the pouch 10-8, and is formed so as to intersect the virtual line IL connecting the inner edges 21A and 22A of the opening starting means 21 and 22. Further, the first opening guide line 101 is formed in the region between the inner edge 17A of the end sealing portion 17 and the content C for the same reason as described in the first opening guide line 23.

The first opening guide line 101 has two first inclined line portions 101A and 101B and a convex line portion 101C located between the first inclined line portions 101A and 101B. The first opening guide line 101 shown in FIG. 24 is formed on the first inclined line portion 101A, the first reference line portion 101D connected to the convex line portion 101C, the first inclined line portion 101B, and the convex line portion 101C. It further has a connected first reference line portion 101E. The first opening guide wire 101 having such a shape is suitable for high-speed processing because it can be processed by a laser while flowing the packaging material at a predetermined speed without returning the laser head to the flow direction of the packaging material. ing. The first opening guide line 101 shown in FIG. 24 has the first reference line portions 101D and 101E, but the first opening guide line 101 does not have to have the first reference line portion.

<1st inclined line part>
The first inclined line portions 101A and 101B are inclined with respect to the virtual line IL and intersect with the virtual line IL, respectively. Further, the first inclined line portions 101A and 101B are formed so that the distance between the first inclined line portions 101A and 101B becomes wider toward the first end portion 13 of the pouch 10-8. By forming such first inclined line portions 101A and 101B, when the opening is opened from the opening starting means 21, the breaking line of the front surface 11 is cut on the second end portion 14 side by the first inclined line portion 101A. Also, even when the package is opened from the opening start means 22, the break line of the front surface 11 can be pulled down to the second end portion 14 side by the first inclined line portion 101B.

The upper limit of the angles α5 and α6 of the first inclined line portions 101A and 101B with respect to the virtual line IL may be less than 90 °, but for the same reason as described in the columns of the first inclined line portions 23A and 23B. It is preferably less than 45 °. Further, the lower limit of the angles α5 and α6 may also exceed 0 °, but is preferably 15 ° or more from the viewpoint of effectively lowering the break line of the front surface 11.

The first inclined line portions 101A and 101B may be curved, but are preferably linear for the same reason as described in the columns of the first inclined line portions 23A and 23B. The length L6 (see FIG. 26) of the first inclined line portions 101A and 101B is not particularly limited, but may be, for example, 10 mm or more and 30 mm or less.

<Convex line part>
The convex line portion 101C is located between the first inclined line portion 101A and the first inclined line portion 101B. The convex line portion 101C is convex toward the first end portion 13 side of the pouch 10-8. The position 101C1 on the first end 13 side of the convex line portion 101C is located on the first end 13 side of the virtual line IL. As a result, when the package is opened, a large step can be formed between the front surface 11 and the back surface 12.

The distance d2 (see FIG. 26) between the position 101C1 on the first end 13 side of the convex line portion 101C and the second reference line portion 102C of the second opening guide line 102 described later shall be 3 mm or more. Is preferable. When this distance d2 is 3 mm or more, a large step can be formed between the front surface 11 and the back surface 12 when the package is opened.

The shape of the convex line portion 101C is a semi-elliptical shape, but similarly to the convex line portion 23C, it may be a curved line such as a semicircle or a semi-elliptical shape or a polygonal line such as a V shape. ..

<1st reference line part>
The first reference line portions 101D and 101E are lines substantially parallel to the virtual line IL. The first reference line portion 101D shown in FIG. 24 is connected to the first inclined line portion 101A and the convex line portion 101C, and the first reference line portion 101E is connected to the first inclined line portion 101B and the convex line portion 101C. It is connected. By forming the first reference line portions 101D and 101E, it becomes easy to visually confirm the position of the convex line portion 101C. The length L7 (see FIG. 26) of the first reference line portions 101D and 101E is not particularly limited, but may be, for example, 10 mm or more and 50 mm or less.

<< Second opening guide line >>
The second opening guide wire 102 is formed on the front surface 11 and the back surface 12 on which the first opening guide wire 101 is not formed. Since the first opening guide wire 101 is formed on the front surface 11, the second opening guide wire 102 is formed on the back surface 12. When the first opening guide wire is formed on the back surface, the second opening guide wire is formed on the front surface.

The second opening guide wire 102 has a continuous linear shape. Since the second opening guide line 102 is a continuous line, the breaking line on the back surface 12 is unlikely to come off from the second opening guide line 102 at the time of opening. If the second inclined line portions 102A and 102B, which will be described later, have a continuous line shape, the second opening guide line 102 does not have to have a continuous line shape.

The second opening guide line 102 is a line that penetrates the base material layer and does not penetrate the sealant layer. When the packaging material 103 further includes a metal leaf layer between the base material layer and the sealant layer, the metal leaf layer maintains the barrier property of the accommodation space, so that the second opening guide wire 102 penetrates the metal foil layer. It is necessary not to. The second opening guide wire 102 can be formed by a laser.

The second opening guide line 102 extends in the width direction DR1 of the pouch 10-8 and is formed so as to intersect the virtual line IL. Further, the second opening guide wire 102 is formed in the region between the inner edge 17A of the end sealing portion 17 and the content C for the same reason as described in the column of the first opening guide wire 23. ..

The second opening guide wire 102 has two continuous linear second inclined wire portions 102A and 102B. The second opening guide line 102 shown in FIG. 27 further has a second reference line portion 102C connected to the second inclined line portions 102A and 102B. The second opening guide wire 102 having such a shape is suitable for high-speed processing because it can be processed by a laser while flowing the packaging material at a predetermined speed without returning the laser head to the flow direction of the packaging material. ing.

<Second inclined line part>
The second inclined line portions 102A and 102B are inclined with respect to the virtual line IL and intersect with the virtual line IL, respectively. Further, the second inclined line portions 102A and 102B are formed so that the distance between the second inclined line portions 102A and 102B becomes wider toward the first end portion 13 of the pouch 10-8. By forming such second inclined line portions 102A and 102B, when the opening is opened from the opening starting means 21, the breaking line of the back surface 12 is pulled down to the second end portion 14 side by the second inclined line portion 102A. Also, even when the package is opened from the opening start means 22, the breaking line of the back surface 12 can be pulled down to the second end portion 14 side by the second inclined line portion 102B.

The upper limit of the angles α7 and α8 of the second inclined line portions 102A and 102B with respect to the virtual line IL may be less than 90 °, but for the same reason as described in the columns of the first inclined line portions 101A and 101B. It is preferably less than 45 °. Further, the lower limit of the angles α7 and α8 may also exceed 0 °, but is preferably 15 ° or more for the same reason as described in the columns of the first inclined line portions 101A and 101B.

The second inclined line portions 102A and 102B may be curved, but are preferably linear for the same reason as described in the columns of the first inclined line portions 23A and 23B. The length L8 (see FIG. 27) of the second inclined line portions 24A and 24B is not particularly limited, but may be, for example, 10 mm or more and 30 mm or less.

The second inclined line portion 102A shown in FIG. 25 is formed at a position corresponding to the first inclined line portion 101A, and the second inclined line portion 102B is formed at a position corresponding to the first inclined line portion 101B. ing. By forming the second inclined line portions 102A and 102B at such positions, the breaking line of the front surface 11 and the breaking line of the back surface 12 overlap with each other when the second inclined line portions 102A and 102B are opened. Therefore, it is possible to prevent the misidentification as a picking part.

<Second reference line part>
The second reference line portion 102C is a line substantially parallel to the virtual line IL. By forming such a second reference line portion 102C, the back surface 12 can be torn along the second reference line portion 102C. The length L9 (see FIG. 27) of the second reference line portion 102C is not particularly limited, but may be, for example, 50 mm or more and 250 mm or less.

The pouch 10-8 is composed of the packaging material 103. Since the layer structure of the packaging material 103 is the same as the layer structure of the packaging material 30, the description thereof will be omitted here.

<<< Other pouches >>>
The second opening guide line 102 of the pouch 10-8 shown in FIG. 25 has the second reference line portion 102C, but the second opening guide line 102 does not have the second reference line portion. good. In this case, the second inclined line portion 102A and the second inclined line portion 102B are separated from each other.

Although the pouch 10-8 shown in FIG. 25 has the second opening guide line 102 formed on the back surface 12, it is not necessary to form the second opening guide line 102. In this case, it is preferable that the tear propagation resistance of the back surface 12 in the first direction parallel to the virtual line IL is smaller than the tear propagation resistance in the second direction orthogonal to the first direction.

The pouch 10-8 shown in FIG. 24 is manufactured by cutting one packaging material 103 in half as described later, and is composed of two packaging materials, a first packaging material and a second packaging material. May be. Since the first packaging material and the second packaging material are the same as the first packaging material 41 and the second packaging material 42 described in the first embodiment, the description thereof will be omitted here.

The pouch 10-8 shown in FIG. 24 is a four-way seal type pouch, but may be a three-way seal type pouch. When the pouch 10-8 is a three-way seal type pouch, it does not have an end seal portion on the second end 14 side.

The pouch 10-8 shown in FIG. 24 does not have resealable means, but may have resealable means. Since the resealable means is the same as the resealable means 51 described in the first embodiment, the description thereof will be omitted here. The pouch 10-8 shown in FIG. 24 does not have a gusset fold, but may have a gusset fold.

In the pouch 10-8 of the present embodiment, when the pouch 10-8 is opened from the opening starting means 21, the breaking line on the front surface 11 side is opened in the opening direction DR2 until it hits the first opening guide line 101 (FIG. 28). Then, when the break line on the front surface 11 side hits the first inclined line portion 101A of the first opening guide line 101, it is guided to the second end portion 14 side along the first inclined line portion 101A, and then. , The first reference line portion 101D, the convex line portion 101C, and the first reference line portion 101E. On the other hand, the break line on the back surface 12 side proceeds in the opening direction DR2 until it hits the opening guide line 24. Then, when it hits the second inclined line portion 102A of the second opening guide line 102, it is guided to the second end portion 14 side along the second inclined line portion 102A. After that, the break line on the back surface 12 side advances along the second reference line portion 102C. Therefore, in the pouch 10-8 of the present embodiment, when the pouch 10-8 is opened from the opening starting means 21, a portion where the break line on the front surface 11 side is higher than the break line on the back surface 12 side is formed. Therefore, as shown in FIG. 28, the convex portion 11B is formed on the front surface 11. This allows the paragraph to be formed. Even if the pouch 10-8 is opened from the opening start means 22, a similar step can be formed. Similar to pouch 10-8, pouch 10-8 composed of two packaging materials, three-way pouch, or pouch 10-8 further provided with resealable means and gusset folds. A step can be formed in.

In a pouch in which the first opening guide line 101 is formed, but the second opening guide line 102 does not have the second reference line portion 102C, the first opening guide line 101 is formed on the front surface 11. Therefore, the breaking line of the front surface 11 advances in the same manner as the pouch 10-8. On the other hand, the break line of the back surface 12 advances along the second inclined line portion 102A, but since the second opening guide line 102 does not have the second reference line portion 102C, it reaches the lower end of the second inclined line portion 102A. After proceeding, proceed as it is. Therefore, even in such a pouch, when the pouch is opened from the opening start means 21, a portion where the break line on the front surface 11 side is higher than the break line on the back surface 12 side is formed. A convex portion is formed on the surface 11. This makes it possible to form a step. Even if the pouch 10-2 is opened from the opening start means 22, a similar step can be formed.

In the pouch in which the first opening guide line 101 is formed but the second opening guide line 102 is not formed, the first opening guide line 101 is formed on the front surface 11, so that the front surface 11 is formed. The breaking line of the surface 11 proceeds in the same manner as the pouch 10-8, but since the second opening guide line 102 is not formed on the back surface 12, the breaking line of the back surface 12 proceeds as it is. Even if the break line of the back surface 12 progresses in a natural manner, the break line of the front surface 11 is pulled down toward the second end portion 14 by the first inclined line portion 101A, so that the break line of the back surface 12 is more than the break line. A high part and a low part are formed. This makes it possible to form a step.

According to the present embodiment, since the pouch 10-8 is formed with the first opening guide line 101 having the first inclined line portions 101A and 101B and the convex line portion 101C, the opening starting means 21 and the opening start are started. Regardless of which of the means 22 is opened, the break line on the front surface 11 side and the break line on the back surface 12 proceed as described above. A step can be formed. As a result, when the package is opened, a grip portion is formed on the front surface 11, so that the front surface 11 and the back surface 12 can be easily picked. Similarly, a pouch composed of two packaging materials, a three-way pouch, or a pouch provided with a resealable means or a gusset folding portion is opened from any of the opening starting means 21 and 22. However, as with the pouch 10-8, the break line on the front surface 11 side and the break line on the back surface 12 side advance, so that when the package is opened, the front surface 11 and the back surface are similar to the pouch 10-8. Each of the 12 can be easily picked.

In a pouch in which the first opening guide line 101 is formed, but the second opening guide line 102 does not have the second reference line portion 102C or the second opening guide line itself does not have the first inclined line portion 101A. , 101B and the first opening guide wire 101 having the convex wire portion 101C are formed. Therefore, regardless of which of the opening starting means 21 and the opening starting means 22 is opened, the pouch 10-8 is mainly used. Since the break line on the front surface 11 side and the break line on the back surface 12 side proceed as described above, a step can be formed by the break line on the front surface 11 and the break line on the back surface 12. As a result, when the package is opened, a grip portion is formed on the front surface 11, so that the front surface 11 and the back surface 12 can be easily picked.

<< Manufacturing method of pouch >>
Such a pouch 10-8 is manufactured by using a raw fabric roll different from the raw fabric roll 111.

The raw roll 111 is wound with a packaging material 103. The packaging material 103 is formed with a first opening guide wire 101 and a second opening guide wire 102 extending in the length direction DR2 by a laser in advance.

In the packaging material 103 wound on the original roll 111, the first opening guide line 101 shown in FIG. 29 is formed in the first region R1 which is a half region of the width direction DR4 of the packaging material 103. The second opening guide wire 102 is formed in the second region R2, which is the other half region of the DR4 in the width direction of the packaging material 30. The first region R1 is a region to be the front surface 11, and the second region R2 is a region to be the back surface 12.

Further, in the packaging material 103, the first inclined line portions 101A and 101B of the first opening guide wire 101 are widely spaced from each other toward the first end portion 103A extending in the length direction DR2 of the packaging material 103. The first virtual line IL1 in the first region R1 which is the virtual line IL connecting the inner edges 21 and 22 of the opening start means 21 and 22 is inclined to the first virtual line IL1 and intersects the first virtual line IL1 respectively. is doing.

In the packaging material 103, the convex wire portion 101C of the first opening guide wire 101 is located between the first inclined wire portions 101A and 101B, and the first end portion 103A extending in the length direction DR3 of the packaging material 103. It has a convex shape toward the second end 103B on the opposite side. Further, the position of the convex line portion 101C on the side of the second end portion 103B is located closer to the second end portion 103B than the first virtual line IL1.

Further, in the packaging material 103, the second inclined line portions 102A and 102B of the second opening guide wire 102 are widely spaced from each other toward the second end portion 103B extending in the length direction DR3 of the packaging material 103. The second virtual line IL2 is inclined with respect to the second virtual line IL2 in the second region R2, which is the virtual line IL connecting the inner edges 21A and 22 of the opening start means 21, 22. They are crossing each other. Further, in the second opening guide wire 102, when the packaging material 103 is cut in half along the length direction DR2 and the packaging materials 103 are overlapped with each other, the second inclined line portion 102A overlaps with the first inclined line portion 101A. Further, the second inclined line portion 102B is formed at a position overlapping with the first inclined line portion 101B.

The laser for forming the first opening guide wire 101 and the second opening guide wire 102 is not particularly limited, but a carbon dioxide gas laser, a YAG laser, a semiconductor laser, an argon ion laser and the like can be used.

After preparing such a raw roll 111, the packaging material 103 is unwound from the raw roll 111, the packaging material 103 is cut in half along the length direction DR3 of the packaging material 103, and the sealant layers are separated from each other. The packaging materials 103 are overlapped with each other so as to face each other. Then, the content C is filled between the packaging materials 103. Next, in a state where the packaging materials 103 are overlapped with each other, a first seal portion having a predetermined width extending in the length direction DR3 and a second seal portion having a predetermined width extending in the width direction DR4 are formed and sealed. Get the bag body continuously. Since the specific method for obtaining the bag body is the same as that in the first embodiment, the description thereof will be omitted here.

After obtaining the bag body, through holes are formed in the second seal portions of the bag body. A notch may be formed in place of the through hole.

Finally, the bag body is cut along the width direction DR4 at the position where the through hole of the second seal portion is divided into two to be individualized. As a result, the end sealing portions 17 to 19 and the opening starting means 21 and 22 are formed, and the pouch 10-8 shown in FIG. 24 is obtained.

When a pouch having a first opening guide wire 101 and a second opening guide wire 102 is manufactured using two packaging materials, the pouch is manufactured by the same method as the manufacturing method of the pouch 10-4 described in the first embodiment. can do. Further, the three-way seal type pouch having the first opening guide wire 101 and the second opening guide wire 102 can also be manufactured by the same method as the manufacturing method of the pouch 10-5 described in the first embodiment.

10-1, 10-2, 10-3, 10-4, 10-5, 10-6, 10-7, 10-8 ... Pouch 11 ... Front surface 12 ... Back surface 13 ... First end 14 ... 2nd end 15 ... 3rd end 16 ... 4th end 17-20 ... End sealing portions 21, 22 ... Opening start means 21A, 22A ... Inner edges 23, 101 ... First opening guide wires 23A, 23B, 101A , 101B ... First inclined line portion 23C, 101A ... Convex line portion 23D, 23E, 101D, 101E ... First reference line portion 24, 102 ... Second opening guide line 24A, 24B, 102A, 102B ... First inclined line portion Parts 24C, 102C ... Second reference line parts 30, 41, 42, 103 ... Packaging material 31 ... Base material layer 32 ... Sealant layer 41 ... Resumable sealing means 71, 91, 92, 111 ... Original roll IL ... Virtual line IL1 ... 1st virtual line IL2 ... 2nd virtual line

Claims (11)

A pouch having a front surface and a back surface and formed using a packaging material containing at least a substrate layer and a sealant layer.
The first end and
The second end on the opposite side of the first end,
A third end and a fourth end extending between the first end and the second end, respectively,
The end seals formed on the third end and the fourth end, respectively,
An opening starting means formed on each of the end sealing portions and composed of a notch or a notch, and an opening starting means.
With the continuous linear first opening guide wire formed on the front surface or the back surface,
A continuous linear second opening guide wire formed between the opening starting means on the front surface and the back surface on which the first opening guide wire is not formed is provided.
The first opening guide wire and the second opening guide wire are lines that penetrate the base material layer and do not penetrate the sealant layer, respectively .
The first opening guide line is inclined with respect to the virtual line connecting the inner edges of the opening starting means so that the distance between the first opening guide lines becomes narrower toward the first end side of the pouch, and the virtual line is provided. It has two first inclined line portions that intersect with each other, and a convex line portion that is located between the first inclined line portions and is convex toward the second end portion side of the pouch. ,
Two second inclined lines in which the second opening guide line is inclined with respect to the virtual line so that the distance between the second opening guide lines is narrowed toward the first end side and intersects with the virtual line, respectively. Has a part,
The position on the second end side of the convex line portion is located closer to the second end portion side of the pouch than the virtual line .
A pouch in which the second inclined line portion is formed at a position corresponding to the first inclined line portion . A pouch having a front surface and a back surface and formed using a packaging material containing at least a substrate layer and a sealant layer.
The first end and
The second end on the opposite side of the first end,
A third end and a fourth end extending between the first end and the second end, respectively,
The end seals formed on the third end and the fourth end, respectively,
An opening starting means formed on each of the end sealing portions and composed of a notch or a notch, and an opening starting means.
With the continuous linear first opening guide wire formed on the front surface or the back surface,
A continuous linear second opening guide wire formed between the opening starting means on the front surface and the back surface on which the first opening guide wire is not formed is provided.
The first opening guide wire and the second opening guide wire are lines that penetrate the base material layer and do not penetrate the sealant layer, respectively .
The first opening guide line is inclined with respect to the virtual line connecting the inner edges of the opening starting means so that the distance between the first opening guide lines becomes wider toward the first end side of the pouch, and the virtual line is provided. It has two first inclined line portions that intersect with each other, and a convex line portion that is located between the first inclined line portions and is convex toward the first end portion side of the pouch. ,
Two second inclined line portions in which the second opening guide line is inclined with respect to the virtual line so as to widen the distance from each other toward the first end portion side and intersects with the virtual line, respectively. Have,
The position on the first end side of the convex line portion is located closer to the first end portion side of the package than the virtual line .
A pouch in which the second inclined line portion is formed at a position corresponding to the first inclined line portion . The pouch according to claim 1 or 2, wherein the first opening guide line is connected to the first inclined line portion and the convex line portion, and further has a first reference line portion substantially parallel to the virtual line. .. One of claims 1 to 3, further comprising resealable means, wherein the opening start means and the first opening guide line are located closer to the first end portion of the resealable means, respectively. The pouch described in. According to any one of claims 1 to 4, the second opening guide line is connected to the second inclined line portion and further has a continuous linear second reference line portion substantially parallel to the virtual line. The pouch described. On the front surface and the back surface on which the first opening guide line is not formed, the tear propagation resistance in the first direction parallel to the virtual line is orthogonal to the first direction in the second direction. The pouch according to any one of claims 1 to 5 , which is smaller than the tear propagation resistance. The pouch according to any one of claims 1 to 6 , wherein the contents are contained. An original roll wrapped with a packaging material containing at least a base material layer and a sealant layer and having a continuous linear first opening guide wire extending in a length direction that penetrates the base material layer and does not penetrate the sealant layer. And the process of preparing
A step of unwinding the packaging material from the raw roll and half-cutting or half-folding the packaging material along the length direction of the packaging material.
In a state where the half-cut or half-folded packaging materials are overlapped with each other so that the sealant layers face each other, the packaging materials are heat-sealed to the first sealing portion extending in the length direction and the packaging at predetermined intervals. A step of forming a plurality of second seal portions extending in the width direction of the material to continuously obtain a plurality of sealed bags.
During the step of obtaining the bag body, the step of filling the contents between the packaging materials and the step of filling the contents.
A step of forming an opening starting means including a notch or a notch at a predetermined position of each of the second sealing portions, and a step of forming the opening starting means.
The process of disassembling the bag body is provided.
In the original roll, the first opening guide wire is formed in a first region which is a half region in the width direction of the packaging material, and the first opening guide wire is the length of the packaging material. Each of the first virtual lines in the first region, which is a virtual line connecting the inner edges of the opening starting means, is inclined so as to narrow the distance between the first ends extending in the radial direction. The two first inclined line portions that intersect with the first virtual line and the first end portion that is located between the first inclined line portions and extends in the length direction of the packaging material are opposite to each other. It has a convex line portion that becomes convex toward the second end portion side on the side, and the position of the second end portion side of the convex line portion is the second position of the first virtual line. A method of manufacturing a pouch located on the end side. The packaging material in the raw fabric roll includes at least a base material layer and a sealant layer, and further has a second opening guide wire extending in a length direction that penetrates the base material layer and does not penetrate the sealant layer. The second opening guide wire is formed in a second region of the half region of the packaging material in the width direction in which the first opening guide wire is not formed, and the second opening guide wire is formed. The second virtual line in the second region, which is a virtual line connecting the inner edges of the opening starting means so that the distance between the packaging materials is narrowed toward the second end side extending in the length direction of the packaging material. It has two continuous linear second inclined line portions that are inclined with respect to the line and intersect each other with the second virtual line, and the second inclined line portion is the package along the length direction. The method for manufacturing a pouch according to claim 8 , wherein the material is formed so as to overlap the first inclined line portion when the packaging materials are overlapped with each other by cutting or folding the material in half. An original roll wrapped with a packaging material containing at least a base material layer and a sealant layer and having a continuous linear first opening guide wire extending in a length direction that penetrates the base material layer and does not penetrate the sealant layer. And the process of preparing
A step of unwinding the packaging material from the raw roll and half-cutting or half-folding the packaging material along the length direction of the packaging material.
In a state where the half-cut or half-folded packaging materials are overlapped with each other so that the sealant layers face each other, the packaging materials are heat-sealed to the first sealing portion extending in the length direction and the packaging at predetermined intervals. A step of forming a plurality of second seal portions extending in the width direction of the material to continuously obtain a plurality of sealed bags.
During the step of obtaining the bag body, the step of filling the contents between the packaging materials and the step of filling the contents.
A step of forming an opening starting means including a notch or a notch at a predetermined position of each of the second seal portions, and a step of forming the opening starting means.
The step of disassembling the bag body is provided.
In the original roll, the first opening guide wire is formed in a first region which is a half region in the width direction of the packaging material, and the first opening guide wire is the said of the packaging material. Each is inclined with respect to the first virtual line in the first region, which is a virtual line connecting the inner edges of the opening starting means so that the distance between the two ends is widened toward the first end extending in the length direction. And on the side of the first end portion of the packaging material, which is located between the two first inclined line portions intersecting with the first virtual line and the first inclined line portion and extends in the length direction of the packaging material. A pouch having a convex line portion that is convex toward the end, and the position of the first end portion side of the convex line portion is located closer to the first end portion side than the first virtual line. Manufacturing method. The packaging material in the raw fabric roll includes at least a base material layer and a sealant layer, and further has a second opening guide wire extending in a length direction that penetrates the base material layer and does not penetrate the sealant layer. The second opening guide wire is formed in a second region of the half region of the packaging material in the width direction in which the first opening guide wire is not formed, and the second opening guide wire is formed. Is a second region in the second region, which is a virtual line connecting the inner edges of the opening starting means so that the distance between the packaging materials becomes wider toward the first end side extending in the length direction of the packaging material. It has two continuous linear second inclined line portions that are inclined with respect to the virtual line and intersect with the second virtual line, respectively, and the second inclined line portion is said along the length direction. The method for manufacturing a pouch according to claim 10, wherein the packaging material is formed so as to overlap the first inclined line portion when the packaging materials are cut in half or folded in half and the packaging materials are overlapped with each other.

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