Packaging bag and packaging body

Abstract

A packaging bag 100 comprises a cutting guidance strip 60A that extends in a strip-like manner along a lateral crossing direction from a side end section 81 toward another side end section 82. The cutting guidance strip 60A comprises, in the stated order from a top edge section 84 side: a first guidance strip having a plurality of first cutting lines that are inclined at a prescribed angle relative to the lateral crossing direction and are arranged parallel to each other; a second cutting guidance strip having a plurality of perforated second cutting lines that are inclined at a prescribed angle relative to the lateral crossing direction in a direction opposite that of the first cutting lines and are arranged parallel to each other at prescribed intervals; and a third guidance strip having a plurality of third cutting lines that are inclined at a prescribed angle in the same direction relative to the lateral crossing direction as the first cutting lines and are arranged parallel to each other. The cutting guidance strip 60A comprises perforated fourth cutting lines extending in the lateral crossing direction between the first guidance strip and the second guidance strip and / or between the second guidance strip and the third guidance strip.

Description

[Technical Field]

[0001] The present disclosure relates to a packaging bag and a packaging body. [Background technology]

[0002] Packaging bags for sealing and preserving packaged items such as medicines and foodstuffs are known. To enhance the sealing performance, such packaging bags are formed by bonding the peripheral edges of a pair of laminated films made of multiple layers of different materials. Perforated cut lines are provided on the front and back of such packaging bags to make them easier to open.

[0003] Patent Document 1 proposes forming a plurality of perforation-like slits formed on a first surface and a plurality of perforation-like slits formed on a second surface so as to be inclined in opposite directions relative to a predetermined opening direction. This technology proposes inclining all of the perforation-like slits on the front and back surfaces, and by making the inclination of the perforation-like slits on the front and back surfaces opposite each other, a grip portion is formed on the opening after opening, making it easier to grip with fingertips after opening. Patent Document 2 proposes a technology in which a guide slit strip is provided between rows of guide slits extending horizontally, and the minor angles of the multiple slit lines in this guide slit strip are made different from each other, making opening easier. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 4648605 [Patent Document 2] Japanese Patent Application Publication No. 2019-156491 Summary of the Invention [Problem to be solved by the invention]

[0005] As in Patent Documents 1 and 2, by providing multiple inclined cut lines, the packaging bag can be opened smoothly and the packaged contents can be easily removed. The present disclosure provides a packaging bag that further enhances these advantages and can sufficiently prevent the tear when opened from moving away from the cutting guide band and proceeding in an unexpected direction. Also provided is a package including such a packaging bag. [Means for solving the problem]

[0006] The present disclosure provides a packaging bag comprising a first laminate film portion on a front side, a second laminate film portion on a back side bonded to the first laminate film portion, and cut guide bands on each of the front and back sides extending in a strip-like shape in a transverse direction from one side edge to the other. The cut guide bands provided on this packaging bag comprise, in order from the top end side, a first guide band having a plurality of first cut lines inclined at a predetermined angle with respect to the transverse direction and arranged parallel to each other, a second guide band having a plurality of second perforated cut lines inclined at a predetermined angle with respect to the transverse direction in the opposite direction to the first cut lines and arranged parallel to each other at predetermined intervals, and a third guide band having a plurality of third cut lines inclined at a predetermined angle with respect to the transverse direction in the same direction as the first cut lines and arranged parallel to each other.

[0007] The packaging bag has a fourth perforated cut line extending in the transverse direction between the first and second guide bands and / or between the second and third guide bands, the first cut line, the second cut line, the third cut line, and the fourth cut line being spaced apart from one another, and the first cut line, the second cut line, and the third cut line on the front surface being inclined in the opposite direction to the first cut line, the second cut line, and the third cut line on the back surface, respectively, with respect to the transverse direction.

[0008] The packaging bag has, in this order from the upper end side, a first guide band having a first cut line, a second guide band having a second cut line, and a third guide band having a third cut line. The first and third cut lines are inclined in the opposite direction to the second cut line with respect to the transverse direction, so that the slit guided by the second cut line changes direction after passing through the second guide band, thereby preventing the slit from progressing outside the first and third guide bands. Furthermore, a fourth cut line extending along the transverse direction is provided between the first and second guide bands and / or between the second and third guide bands, so that the slit can progress along the fourth cut line while preventing the slit from progressing outside the first and third guide bands.

[0009] In addition, the first, second, and third cut lines on the front surface and the first, second, and third cut lines on the back surface are inclined in opposite directions relative to the transverse direction, which allows the cut-opening route to be different on the front surface and the back surface. This stabilizes the size of the tab after opening, making it easy to remove the packaged items, and also sufficiently prevents the cut-opening from moving out of the cut-off guide band and proceeding in an unexpected direction when opening.

[0010] Furthermore, because the fourth cut line is perforated and the first, second, third, and fourth cut lines are spaced apart from one another, tearing of the surface layers of the first laminate film portion and the second laminate film portion can be prevented. This sufficiently reduces variation in the cut-opening route. Therefore, it is possible to sufficiently prevent the cut from straying from the tear-inducing band and proceeding in an unexpected direction when opening the package. Furthermore, compared to cut lines that are linear rather than perforated, the cut edge after opening is prevented from becoming sharp, thereby improving safety.

[0011] The packaging bag preferably has a fourth cut line disposed differently on the front and back surfaces. The front surface preferably has a fourth cut line between the second and third guide bands, with both the second and third cut lines inclined toward the fourth cut line when viewed in the transverse direction. The back surface preferably has a fourth cut line between the first and second guide bands, with both the first and second cut lines inclined toward the fourth cut line when viewed in the transverse direction. This makes it easier for the cut-opening routes on the front and back surfaces to differ, more reliably forming a tab after opening. Furthermore, reducing the number of fourth cut lines maintains the strength of the first laminate film portion and the second laminate film portion.

[0012] It is preferable that on the front surface of the packaging bag, an imaginary line parallel to the transverse direction and passing through the lower ends of the multiple first cut lines intersects with at least some of the perforated second cut lines, and on the back surface of the packaging bag, an imaginary line parallel to the transverse direction and passing through the upper ends of the multiple third cut lines intersects with at least some of the perforated second cut lines. This allows the cutting to proceed along the vicinity of the imaginary line on the front and back surfaces, even if the cutting starts from a side edge opposite to the intended side edge. Therefore, even if the cutting starts from a side edge other than the intended side, it is possible to sufficiently prevent the cutting from deviating from the cutting guide band and proceeding in an unexpected direction when opening.

[0013] It is preferable that the second cut line on the front surface of the packaging bag and the second cut line on the back surface are arranged so as to be offset from each other in the vertical direction, thereby further increasing the offset between the cut-opening routes on the front surface and back surface, and making the tab portion after opening sufficiently large.

[0014] The width of the cutting guide band is preferably 4 mm or more. When a notch is provided at the side edge after the cutting guide band is provided, by making the width of the cutting guide band sufficiently large, it is possible to prevent the notch from being positioned at a position that is not aligned with the cutting guide band. This further prevents the incision from the notch from being positioned at a position that is not aligned with the cutting guide band.

[0015] The cutting guide band preferably extends from one side edge of the packaging bag to the other side edge, and the second guide band preferably includes a notch at the side edge. This allows the cutting to proceed from the second guide band with greater reliability. Therefore, the tab portion can be stably formed while the cutting can be sufficiently prevented from coming off the cutting guide band.

[0016] The packaging bag preferably includes a storage section for storing the packaged items, and a sealing section provided between the storage section and the cutting guide band and configured to seal the storage section after opening along the cutting guide band. This allows the storage section to be repeatedly opened and sealed, and can sufficiently suppress changes in the properties of the packaged items that are not consumed all at once.

[0017] The first laminate film part and the second laminate film part each preferably have a laminate structure in which, from the inside, a sealant layer, a barrier layer containing an inorganic substance, a polyethylene resin layer, and a base layer are laminated in this order. By having the polyethylene resin layer between the barrier layer and the base layer, the first laminate film part and the second laminate film part have flexibility, and can sufficiently prevent the progression of cutting in unexpected directions while maintaining sufficient strength.

[0018] The tear strength when tearing each of the first laminate film part and the second laminate film part along the tear induction band is preferably 0.1 to 2.0 N, more preferably 0.2 to 0.9 N. This allows the tear induction band to be torn with a moderate force while maintaining sufficient strength. The tear strength in the present disclosure is a value measured in accordance with JIS K 7128-1:1998.

[0019] The present disclosure provides a package including any one of the packaging bags described above and a patch contained in the storage section of the packaging bag. Because this package includes any one of the packaging bags described above, it is possible to sufficiently prevent the tearing that occurs when the package is opened from moving away from the tear guide band and proceeding in an unexpected direction. This allows for smooth removal of the patch. Furthermore, because damage to the packaging bag caused by opening can be prevented, the package can be resealed and stored even after opening. This allows the efficacy of the patch to be maintained at a high level for a long period of time, even after opening. [Effects of the Invention]

[0020] According to the present disclosure, it is possible to provide a packaging bag that can sufficiently prevent the tear from moving away from the tear guide band and proceeding in an unexpected direction when opened, and also to provide a package that includes such a packaging bag. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a plan view showing the front surface side of a packaging bag and a packaging body according to one embodiment. [Figure 2] FIG. 2 is a plan view showing the back side of the packaging bag and packaging body according to the embodiment. [Figure 3] 1 is an enlarged plan view showing a portion of a cutting guide band on the surface of a packaging bag and a packaging body according to an embodiment. FIG. [Figure 4] 4 is a diagram showing regions of each induction band in the cleavage induction band shown in FIG. 3. FIG. [Figure 5] 10 is an enlarged plan view showing a portion of a cutting guide band on the back surface of a packaging bag and a packaging body according to an embodiment. FIG. [Figure 6] 10 is a diagram showing the packaging bag and packaging body according to the embodiment when the other side end portion is cut and unfolded. FIG. [Figure 7] 10A and 10B are diagrams showing the state of a packaging bag and a packaging body according to one embodiment when cut open from one side edge along a cutting guide band. [Figure 8]1 is a diagram showing a packaging bag and a packaging body according to an embodiment when one side end portion is cut and unfolded. FIG. [Figure 9] 9 is a cross-sectional view of the laminated film on the front surface side taken along line IX-IX in FIG. 3. [Figure 10] FIG. 10 is a plan view showing the front surface side of a packaging bag and a packaging body according to another embodiment. [Figure 11] 10 is a diagram showing a packaging bag and a packaging body according to another embodiment when the other side end portion is cut and unfolded. FIG. [Figure 12] FIG. 2 is a diagram illustrating a method for measuring tear strength. [Figure 13] FIG. 2 is a diagram illustrating a method for measuring tear strength. [Figure 14] FIG. 1 is a plan view showing a package according to one embodiment and a patch contained therein. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings where necessary. However, the following embodiments are merely examples for explaining the present disclosure and are not intended to limit the present disclosure to the following content. In the description, identical elements or elements having identical functions will be assigned the same reference numerals, and redundant explanations will be omitted. Furthermore, positional relationships such as up, down, left, and right used in the description will be based on the positional relationships shown in the drawings unless otherwise specified.

[0023] FIG. 1 is a plan view showing the front surface 100A of a packaging bag 100 according to one embodiment. FIG. 2 is a plan view showing the back surface 100B of the packaging bag 100. A laminated film portion 91 (first laminated film portion) on the front surface side and a laminated film portion 92 (second laminated film portion) on the back surface side are each made of laminated film. The packaging bag 100 includes a seal portion 87 formed by bonding together the peripheral edges of approximately rectangular laminated film portions 91, 92, and a storage portion 88 formed between the laminated film portions 91, 92 inside the seal portion 87. That is, the seal portion 87 bonds together the laminated film portions 91, 92 at an upper end portion 84, side end portions 81, 82, and lower end portion 85 of the packaging bag 100. The storage portion 88 stores an item to be packaged, such as a medicine such as a patch or a food product.

[0024] The packaging bag 100 is provided with cutting guide bands 60A and 60B at the top of the front surface 100A and back surface 100B, respectively, so as to cross between one side edge 81 and the other side edge 82, for cutting open the packaging bag 100. The cutting guide bands 60A and 60B extend from one side edge 81 to the other side edge 82. The side edges 81 and 82 are formed with V-shaped notches 61 and 62 for starting the cutting process. The notches 61 and 62 are formed inside the cutting guide bands 60A and 60B.

[0025] When cutting starts from the notch 61, the cutting proceeds in the transverse direction (x direction in FIGS. 1 and 2) from one side edge 81 to the other side edge 82, and the upper end 84 is cut off from the packaging bag 100. Because the cutting guide bands 60A, 60B of the packaging bag 100 have the notch 62 at the other side edge 82, it is also possible to cut the upper end 84 from the packaging bag 100 in the direction opposite to the transverse direction. Note that, because cutting along the transverse direction (x direction) allows the cutting to proceed more smoothly, at least one of the cutting guide bands 60A, 60B may have a marking to indicate the transverse direction as the cutting direction.

[0026] Below the cutting guide bands 60A, 60B, there is provided a sealing unit 70 that reseals the storage unit 88 after it has been opened by the cutting guide bands 60A, 60B. The sealing unit 70 may have any known structure that allows repeated opening and sealing. For example, it may be a synthetic resin zipper that allows repeated sealing by fitting a strip-shaped protrusion into a strip-shaped groove, or it may be an adhesive seal.

[0027] FIG. 3 is an enlarged plan view showing a portion of the cutting guide band 60A on the front surface 100A of the packaging bag 100. FIG. 4 is a diagram showing the regions of each guide band in the cutting guide band 60A. The cutting guide band 60A has, in this order from the upper end 84 side, a first guide band 10A, a second guide band 20A, a fourth guide band 40A, and a third guide band 30A. The first guide band 10A has a plurality of first cut lines 12 that are inclined at a predetermined angle θ1 with respect to the transverse direction (x direction) and are arranged parallel to each other. The angle θ1 may be 20 to 50 degrees, or may be 30 to 40 degrees. This allows the cut that enters the first guide band 10A to be smoothly guided toward the center of the cutting guide band 60A.

[0028] The first cut line 12, also called a half-cut line or weakened line, is formed by cutting the surface of the laminated film portions 91 and 92 with a metal blade or laser light. The same applies to the second cut line 22, third cut line 32, and fourth cut line 42 described below. The first guide strip 10A is a strip-shaped region defined by a pair of imaginary lines VL11 and VL12 (FIG. 4) that pass through the upper and lower ends of the first cut line 12 and extend parallel to the transverse direction (x direction). The width (length in the y direction) of the first guide strip 10A may be 0.2 to 3 mm, 0.4 to 2 mm, or 0.6 to 1 mm.

[0029] The length L1 of the first cut lines 12 may be 0.3 to 4 mm, 0.5 to 3 mm, or 1 to 2 mm. First cut lines 12 having such a length L1 can change the cut-opening route with high precision while maintaining a sufficiently high strength of the packaging bag 100. The intervals between adjacent first cut lines 12 are different from each other. That is, the interval D1 between adjacent first cut lines 12 that are provided close to each other is smaller than the interval S1 between adjacent first cut lines 12 that are provided far apart. The ratio of interval S1 / interval D1 may be 1.5 to 3, or 1.8 to 2.5. By varying the intervals between the first cut lines 12 in the first guide strip 10A in this way, it is possible to prevent a cut from easily penetrating the first guide strip 10A and to prevent a cut that has entered the first guide strip 10A from continuing to travel through the first guide strip 10A. However, in a modified example, the first score lines 12 may be arranged at equal intervals.

[0030] The second guide band 20A has a plurality of second perforated cut lines 22 that are inclined at a predetermined angle θ2 in the opposite direction to the first cut lines 12 with respect to the transverse direction (x direction) and are arranged parallel to each other at equal intervals. The angle θ2 of the second cut lines 22 that are inclined with respect to the transverse direction (x direction) may be 25 to 55 degrees, or may be 30 to 50 degrees. This allows the direction of the slit that has entered the second guide band 20A to be smoothly guided along the transverse direction.

[0031] The second cut lines 22 are linear perforations, with wired portions 22a and wireless portions 22b, each shorter than the wired portions 22a, arranged alternately to form perforations. The perforated second cut lines 22 facilitate smooth cutting and prevent tearing of the surface layer of the laminated film portion 91. From the same perspective, the length L2 of the wired portions 22a of the perforated second cut lines 22 may be 0.3 to 3 mm or 0.5 to 2 mm. Furthermore, the spacing D2 between the wired portions 22a (the length of the wireless portions 22b) may be 0.1 to 1.2 mm or 0.3 to 1.0 mm. The spacing S2 between adjacent perforated second cut lines 22 may be 0.1 to 1.2 mm or 0.3 to 1.0 mm. The length of one perforated second cut line 22 may be 4 to 10 mm, or may be 5 to 9 mm. In a modified example, the intervals between adjacent perforated second cut lines 22 may not be constant but may be different.

[0032] The second cut lines 22 are arranged in the center of the cutting guide band 60A and have the function of guiding the cutting of the second guide band 20A to the fourth cut lines 42 described below, so it is preferable that the number of second cut lines 22 is greater than the number of first cut lines 12 and third cut lines 32. The number of perforated second cut lines 22 may be 1.5 times or more the number of first cut lines 12 and third cut lines 32.

[0033] The wired portions 22a of adjacent second cut lines 22 may be arranged at regular intervals in the vertical direction (y direction). In this case, it is preferable that five or more wired portions 22a are arranged in the vertical direction (y direction). This allows for smooth slitting even when the width of second guide band 20A is increased. Increasing the width of second guide band 20A makes it easier to form notches 61 and 62 so that they are included in second guide band 20A.

[0034] The second guide strips 20A are strip-shaped regions defined by a pair of imaginary lines VL21, VL22 (FIG. 4) that pass through the upper and lower ends of the second cut lines 22 and extend parallel to the transverse direction (x direction). As shown in FIGS. 3 and 4, if the upper ends of the second cut lines 22 are located at different positions, the upper imaginary line VL21 is drawn so as to pass through the upper end of the uppermost second cut line 22. If the lower ends of the second cut lines 22 are located at different positions, the imaginary line VL22 is drawn so as to pass through the lower end of the lowermost second cut line 22. The width (length in the y direction) of the second guide strips 20A may be 2 to 8 mm, 3 to 7 mm, or 4 to 6 mm. Adjacent first guide strips 10A and second guide strips 20A may be in direct contact. That is, the imaginary line VL12 passing through the lower end of the first cut line 12 may pass through the upper ends of at least some of the second cut lines 22. In this case, the imaginary line VL12 and the imaginary line VL21 are drawn in the same position as shown in FIG. 4. The imaginary line VL12 and the imaginary line VL21 may be separated from each other, and a portion of the first guide band 10A and a portion of the second guide band 20A may overlap. In this case, the imaginary line VL12 passing through the lower end of the first cut line 12 may intersect with at least some of the second cut lines 22.

[0035] The third guide band 30A has multiple third cut lines 32 that are inclined at a predetermined angle θ3 relative to the transverse direction (x direction) in the same direction as the first cut lines 12 and are aligned parallel to one another. The arrangement, shape, size, spacing, and other conditions of the third cut lines 32 may be the same as or different from those of the first cut lines 12. The angle θ3 of the third cut lines 32 inclined relative to the transverse direction (x direction) may be 20 to 50 degrees, or may be 30 to 40 degrees. This allows the incision that enters the third guide band 30A to be smoothly guided toward the center of the cutting guide band 60A. The angle θ3 may be equal to or different from the angle θ1.

[0036] The third guide band 30A is a strip-shaped region defined by a pair of imaginary lines VL31, VL32 that extend parallel to the transverse direction (x direction) and pass through the upper and lower ends of the third cut line 32. The width (length in the y direction) of the third guide band 30A may be 0.2 to 3 mm, 0.4 to 2 mm, or 0.6 to 1 mm.

[0037] The length L3 of the third cut lines 32 may be 0.3 to 4 mm, 0.5 to 3 mm, or 1 to 2 mm. Third cut lines 32 having such a length L3 can change the cut-opening route with high precision while maintaining a sufficiently high strength of the packaging bag 100. The intervals between adjacent third cut lines 32 are different from each other. That is, the interval D3 between adjacent third cut lines 32 that are provided close to each other is smaller than the interval S3 between adjacent third cut lines 32 that are provided far apart from each other. The ratio of the interval S3 to the interval D3 may be 1.5 to 3, or may be 1.8 to 2.5. By varying the intervals between the third cut lines 32 in the third guide strip 30A in this way, it is possible to prevent a cut from easily penetrating the third guide strip 30A and to prevent a cut that has entered the third guide strip 30A from continuing to travel through the third guide strip 30A. However, in a modified example, the third score lines 32 may be arranged at equal intervals.

[0038] The cutting guide band 60A has a fourth guide band 40A between the second guide band 20A and the third guide band 30A, which includes a single perforated fourth cut line 42 extending along the transverse direction (x-direction). The fourth guide band 40A is the region between the second guide band 20A and the third guide band 30A, and is a strip-shaped region defined by a virtual line VL22 that passes through the lower end of the second cut line 22 and extends parallel to the transverse direction (x-direction), and a virtual line VL31 that passes through the upper end of the third cut line 32 and extends parallel to the transverse direction (x-direction). Because the fourth cut line 42 extends along the transverse direction (x-direction), it prevents the incision from departing from the cutting guide band 60A and proceeding in an unexpected direction. The fourth cut line 42 is a linear perforation, with wired portions 42a and wireless portions 42b, each shorter than the wired portions 42a, arranged alternately to form a perforation.

[0039] The fourth cut line 42 is perforated, which allows for smooth cutting and prevents the surface layer of the laminated film portion 91 from being torn. Furthermore, the cut edge after cutting is prevented from becoming sharp, thereby enhancing safety. From the same viewpoint, the length L4 of the wired portion 42a of the perforated fourth cut line 42 may be 1 to 5 mm, or may be 1.5 to 4 mm. The length D4 of the wireless portion 42b may be 0.1 to 1.2 mm, or may be 0.3 to 1.0 mm. The perforated fourth cut line 42 may extend from one side edge 81 to the other side edge 82 and cross the surface 100A.

[0040] The fourth cut line 42 is provided between the second guide band 20A and the third guide band 30A, but is provided at a distance from the second cut line 22 and the third cut line 32. That is, the first cut line 12, the perforated second cut line 22, the third cut line 32, and the perforated fourth cut line 42 are provided at a distance from one another. This prevents the surface layer of the laminated film portion 91 from tearing. In particular, the fourth cut line 42 is the longest perforated cut line among the first cut line 12, the second cut line 22, the third cut line 32, and the fourth cut line 42, and therefore the surface layer in the area adjacent to it is more likely to tear. To sufficiently prevent such breakage, the distance between the fourth score line 42 and each of the second and third score lines 22 and 32 is preferably 0.3 mm or more, and more preferably 0.4 mm or more. To maintain sufficient sharpness during cutting, these distances may be 2 mm or less, or may be 1 mm or less. These distances are determined as the shortest distance between the bottom end of the second score line 22 (the bottom end of the lowest wired portion 22a) and the wired portion 42a of the fourth score line 42, and the shortest distance between the top end of the third score line 32 and the wired portion 42a of the fourth score line 42, respectively.

[0041] It is preferable that the number of the perforated fourth cut lines 42 on the surface 100A is one, which maintains the strength of the cut induction band 60A and prevents the surface layer of the laminated film portion 91 from being torn.

[0042] When viewed along the transverse direction (x direction), the perforated second cut line 22 and the third cut line 32 on the surface 100A are both inclined toward the fourth cut line 42. Therefore, the perforated second cut line 22 and the third cut line 32 function to cause the slit progressing in the transverse direction to converge toward the fourth cut line 42. On the other hand, when viewed along the transverse direction (x direction), the first cut line 12 is inclined away from the fourth cut line 42. The first cut line 12 functions to prevent the slit from departing from the cutting guide band 60A toward the upper end 84 when the slit progresses in the direction opposite the transverse direction (x direction). In this case, the slit may progress near the boundary between the first guide band 10A and the second guide band 20A.

[0043] FIG. 5 is an enlarged plan view of a portion of the cutting guide band 60B on the back surface 100B of the packaging bag 100. The cutting guide band 60B includes, in this order from the upper end 84 side, a first guide band 10B, a fourth guide band 40B, a second guide band 20B, and a third guide band 30B. The cutting guide band 60B differs from the cutting guide band 60A on the front surface 100A in that the fourth guide band 40B is located between the first guide band 10B and the second guide band 20B, but not between the second guide band 20B and the third guide band 30B. That is, the vertical positional relationship between the second guide bands 20A, 20B and the fourth guide bands 40A, 40B is reversed between the front surface 100A and the back surface 100B of the packaging bag 100. The other configuration of the cutting guide band 60B may be the same as that of the cutting guide band 60A. That is, the first guide band 10B may include the same first cut line 12 as the first guide band 10A. The second guide band 20B may include the same perforated second cut line 22 as the second guide band 20A. The third guide band 30B may include the same third cut line 32 as the third guide band 30A.

[0044] The fourth guide band 40B may include the same perforated fourth cut line 42 as the fourth guide band 40A. The cutting guide band 60B has a single perforated fourth cut line 42 extending in the transverse direction (x-direction) between the first guide band 10B and the second guide band 20B. Because the fourth cut line 42 extends in the transverse direction (x-direction), it prevents the slit from departing from the cutting guide band 60B and proceeding in an unexpected direction. The fourth cut line 42 is a linear perforation, and wired portions 42a and wireless portions 42b, each shorter than the wired portions 42a, are arranged alternately to form the perforation.

[0045] The first score lines 12 on the back surface 100B and the first score lines 12 on the front surface 100A are inclined in opposite directions relative to the transverse direction (x direction). That is, as one moves in the transverse direction (x direction), the first score lines 12 on the back surface 100B point downward, and the first score lines 12 on the front surface 100A point upward. In this disclosure, "inclined in opposite directions relative to the transverse direction" refers to a case in which the directions of the two types of score lines are opposite to each other at the top and bottom as one moves in the transverse direction (x direction). On the other hand, "inclined in the same direction relative to the transverse direction" refers to a case in which the directions of the two types of score lines are both inclined upward or both downward as one moves in the transverse direction (x direction).

[0046] Similar to the first score lines 12, the second score lines 22 on the back surface 100B and the second score lines 22 on the front surface 100A are inclined in opposite directions relative to the transverse direction (x direction). The third score lines 32 on the back surface 100B and the third score lines 32 on the front surface 100A are also inclined in opposite directions relative to the transverse direction (x direction). In this way, since the score lines are inclined in opposite directions relative to the transverse direction (x direction), a tab portion can be formed when the packaging bag is cut open in the transverse direction.

[0047] In a plan view of the packaging bag 100, the cutting guide bands 60A and 60B provided on the front surface 100A and the back surface 100B, respectively, are arranged to overlap each other. However, in a plan view, the fourth cut line 42 on the front surface 100A and the fourth cut line 42 on the back surface 100B are arranged not to overlap each other. Therefore, when the packaging bag is cut open, the cutting routes on the front surface 100A and the back surface 100B can be made different with greater certainty. This allows the tab portion to be formed stably.

[0048] The width of the cutting induction bands 60A, 60B (the length in the y direction in FIGS. 3 and 5) is preferably 4 mm or more, more preferably 6 mm or more, and even more preferably 7 mm or more. This prevents the notches 61, 62 from being misaligned with the cutting induction bands 60A, 60B when the notches 61, 62 are provided in the side edges 81, 82 after the cutting induction bands 60A, 60B are provided. The upper limit of the width of the cutting induction bands 60A, 60B may be, for example, 20 mm.

[0049] In a plan view of the packaging bag 100, the second cut line 22 on the front surface 100A and the second cut line 22 on the back surface 100B are arranged so as to be offset from each other in the vertical direction. That is, the second guide band 20A on the front surface 100A and the second guide band 20B on the back surface 100B are arranged so as to be offset from each other in the vertical direction. This further increases the offset between the cutting routes on the front surface 100A and the back surface 100B, making it possible to sufficiently enlarge the tab portion after opening. In a plan view of the packaging bag 100, the fourth guide band 40A on the front surface 100A (the region between the second guide band 20A and the third guide band 30A) overlaps with at least a portion of the second guide band 20B on the back surface 100B. This further facilitates the cutting-opening of the fourth guide band 40A. Similarly, in a plan view of the packaging bag 100, the fourth guide band 40B (the region between the first guide band 10B and the second guide band 20B) on the back surface 100B overlaps with at least a portion of the second guide band 20A on the front surface 100A. This allows the fourth guide band 40B to be cut open more smoothly.

[0050] FIG. 6 is a diagram showing the packaging bag 100 unfolded to schematically illustrate the cutting lines C1 and C2 when the packaging bag 100 is cut open from one side edge 81 starting from the notch 61. FIG. 6 is a diagram showing the packaging bag 100 unfolded after the other side edge 82 has been cut. The cutting guide bands 60A and 60B include a notch 61 in one side edge 81. When cutting starts from the notch 61, the tip of the cutting first travels along the transverse direction (x1 and x2 directions) on both the front surface 100A and the back surface 100B before reaching the second cut line 22. The tip of the cutting is then guided by the second cut line 22, bends downward on the front surface 100A, and reaches the fourth cut line 42. The tip then travels along the perforated fourth cut line 42, forming the cutting line C1. On the other hand, on the back surface 100B, the tip of the incision curves upward and reaches the fourth cut line 42. Thereafter, the tip proceeds along the perforated fourth cut line 42 to form a cutting line C2. Because the cutting lines C1 and C2 are not symmetrical when viewed with the side edge 81 as an axis, a tab portion can be formed.

[0051] FIG. 7 is a diagram showing the state when packaging bag 100 is cut open from one side edge 81 along cutting guide bands 60A, 60B. By cutting open along cutting guide bands 60A, 60B, a tab portion 75 is formed in packaging bag 100. By gripping tab portion 75 with the fingers, the packaged item contained in the storage section of packaging bag 100 can be easily removed. Note that while FIG. 7 shows the state in which packaging bag 100 has been partially opened, the cutting may be continued further and upper end 84 of packaging bag 100 may be separated from packaging bag 100. Since packaging bag 100 has sealing portion 70 as shown in FIGS. 1 and 2, the packaged item can be sealed and stored again.

[0052] The packaging bag 100 (package 200) is preferably opened by being cut open from one side edge 81, but can also be opened by being cut open from the other side edge .

[0053] FIG. 8 is a diagram showing the packaging bag 100 unfolded to schematically illustrate the cutting lines C3 and C4 when the packaging bag 100 is cut open from the other side edge 82 starting from the notch 62. FIG. 8 is a diagram showing the packaging bag 100 after one side edge 81 has been cut and unfolded. The cutting guide bands 60A and 60B include a notch 62 in the other side edge 82. When cutting starts from the notch 62, the tip of the cutting first travels in the direction opposite to the transverse direction (x1, x2 direction) on the front surface 100A and the back surface 100B before reaching the second cutting line 22. The tip of the cutting is then guided by the second cutting line 22 and bends upward on the front surface 100A to reach the first cutting line 12. The tip is then guided by the first cutting line 12 and bends downward to reach another second cutting line 22. The cutting edge then moves along the boundary between the first guide band 10A and the second guide band 20A, forming a cutting line C3. On the other hand, on the back surface 100B, the tip of the cut bends downward and reaches the third cut line 32. Guided by the third cut line 32, it bends upward and reaches another second cut line 22. The cutting edge then moves along the boundary between the second guide band 20B and the third guide band 30B, forming a cutting line C4. Because the cutting lines C3 and C4 are not symmetrical when viewed along the outer edge of the other side end portion 82, a tab portion can be formed.

[0054] In this way, packaging bag 100 can be sufficiently prevented from being torn off cutting guide bands 60A, 60B and moving in an unexpected direction when opened, regardless of whether it is torn open from side edge 81, 82. Furthermore, since the tab portion can be stably formed, the packaged item can be smoothly removed.

[0055] 9 is a cross-sectional view of the laminated film part 91 on the front surface 100A side that forms the packaging bag 100, cut along line IX-IX in FIG. 3. The laminated film part 91 has a laminated structure in which, from the inside, a sealant layer 72, a barrier layer 74 containing an inorganic substance, a polyethylene resin layer 76, and a base material layer 78 are laminated in this order. By having the polyethylene resin layer 76 between the barrier layer 74 and the base material layer 78, the laminated film part 91 has flexibility, which can prevent unexpected tearing during transportation, etc.

[0056] Examples of the sealant layer 72 include film-like polyolefin resins. More specifically, examples include ethylene resins such as low-density polyethylene resin, medium-density polyethylene resin, linear low-density polyethylene resin, polyethylene terephthalate resin having heat sealability, ethylene-vinyl acetate copolymer, ethylene-α-olefin copolymer, and ethylene-methacrylic acid resin copolymer; blend resins of polyethylene and polybutene; and polypropylene resins such as homopolypropylene resin, propylene-ethylene random copolymer, propylene-ethylene block copolymer, and propylene-α-olefin copolymer. The thickness of the sealant layer 72 may be 10 to 100 μm.

[0057] Examples of the inorganic barrier layer 74 include a vapor-deposited film made of an inorganic material, a metal foil, a resin film, and a resin film laminated with a vapor-deposited layer. Specific examples include an inorganic vapor-deposited film such as silica, an aluminum vapor-deposited film, an aluminum foil, and an aluminum foil-laminated PET film. One of these may be used alone, or two or more may be used in combination. The thickness of the barrier layer 74 may be 5 to 30 μm.

[0058] A biaxially oriented polyethylene film can be used as the polyethylene resin layer 76. The thickness of the polyethylene resin layer 76 may be 10 to 40 μm.

[0059] Examples of the base material layer 78 include paper and biaxially oriented films such as biaxially oriented polyethylene terephthalate (PET) film, biaxially oriented polypropylene (PP) film, and biaxially oriented nylon film. The base material layer 78 may be formed from one of the above alone or a combination of two or more. The thickness of the base material layer 78 may be 10 to 30 μm.

[0060] As shown in Fig. 9, the second cut line 22 in the second guide band 20A is formed by cutting the base material layer 78. The first cut line 12, the third cut line 32, and the fourth cut line 42 may be formed in the same manner. The laminated film portion 92 (laminate film 92) on the back side may have the same laminated structure as the laminated film portion 91 (laminate film 91) on the front side. An adhesive layer may be formed between each layer.

[0061] FIG. 10 is a plan view showing the front surface 110A of a packaging bag 110 (packaging body 210) according to another embodiment. FIG. 11 is a view showing the packaging bag 110 unfolded after cutting the other side edge 82 of FIG. 10. In this embodiment, cutting guide bands 65A and 65B are provided at the top of the front surface 110A and the back surface 110B of the packaging bag 110, respectively, so as to cross between one side edge 81 and the other side edge 82, for cutting open the packaging bag 110 to open it. As described below, the cutting guide bands 65A and 65B have a different structure from the cutting guide bands 60A and 60B of the packaging bag 100 according to the above embodiment. The configuration of the packaging bag 110 other than the cutting guide bands 65A and 65B may be the same as that of the packaging bag 100.

[0062] As shown in Fig. 10, cutting guide band 65A (cutting guide band 65B) extends from one side edge 81 to the other side edge 82. A U-shaped notch 64 is formed in side edge 81 to allow for initiation of cutting. A similar notch is also formed in the other side edge 82. Notch 64 may be included in second guide bands 20A, 20B of cutting guide bands 65A, 65B.

[0063] 11, the cutting guide band 65A has, from the upper end 84 side, a first guide band 10A, a fourth guide band 40A, a second guide band 20A, a fifth guide band 41A, and a third guide band 30A. The first guide band 10A, the fourth guide band 40A, the second guide band 20A, and the third guide band 30A have a first cut line 12, a fourth cut line 42, a second cut line 22, and a third cut line 32, respectively, similar to those of the packaging bag 100. The fourth guide band 40A is a band-shaped region between the first guide band 10A and the second guide band 20A, and is defined by an imaginary line VL12 that passes through the lower end of the first cut line 12 and extends parallel to the transverse direction (x-direction) and an imaginary line VL21 that passes through the upper end of the second cut line 22 and extends parallel to the transverse direction (x-direction). The fifth guide band 41A has the same fourth cut line 42 as the fourth guide band 40A. The fifth guide band 41A is the region between the second guide band 20A and the third guide band 30A, and is a strip-shaped region defined by an imaginary line VL22 that passes through the lower end of the second cut line 22 and extends parallel to the transverse direction (x direction), and an imaginary line VL31 that passes through the upper end of the third cut line 32 and extends parallel to the transverse direction (x direction).

[0064] Like the cutting guide band 65A, the cutting guide band 65B has, from the upper end 84 side, a first guide band 10B, a fourth guide band 40B, a second guide band 20B, a fifth guide band 41B, and a third guide band 30B. The first guide band 10B, the fourth guide band 40B, the second guide band 20B, and the third guide band 30B each have a first cut line 12, a fourth cut line 42, a second cut line 22, and a third cut line 32, similar to those of the packaging bag 100. The fourth guide band 40B is a band-shaped region between the first guide band 10B and the second guide band 20B, and is defined by an imaginary line VL12 that passes through the lower end of the first cut line 12 and extends parallel to the transverse direction (x-direction), and an imaginary line VL21 that passes through the upper end of the second cut line 22 and extends parallel to the transverse direction (x-direction). The fifth guide band 41B has the same fourth cut line 42 as the fourth guide band 40B. The fifth guide band 41B is the region between the second guide band 20B and the third guide band 30B, and is a strip-shaped region defined by an imaginary line VL22 that passes through the lower end of the second cut line 22 and extends parallel to the transverse direction (x direction), and an imaginary line VL31 that passes through the upper end of the third cut line 32 and extends parallel to the transverse direction (x direction).

[0065] 11, when viewed along the axis of the side edge 81, the positional relationship of the first guide band, the second guide band, the third guide band, the fourth guide band, and the fifth guide band is line-symmetrical. That is, the arrangement order of the first guide band, the second guide band, the third guide band, the fourth guide band, and the fifth guide band is the same on the front surface 110A and the back surface 110B.

[0066] As shown in FIG. 11 , when the cutting starts from the notch 64, the tip of the cutting first travels along the transverse direction (x1 and x2 directions) and then reaches the second cut line 22. The tip of the cutting is then guided by the second cut line 22 and bends downward on the front surface 110A, reaching the fourth cut line 42 of the fifth guide band 41A. It then travels along the fourth cut line 42, forming a cut line C5. Meanwhile, on the back surface 110B, the tip of the cutting is bends upward and reaches the fourth cut line 42 of the fourth guide band 40B. It then travels along the fourth cut line 42, forming a cut line C6. Because the cut lines C5 and C6 are not symmetrical when viewed along the outer edge of the side end portion 81, a tab portion can be formed.

[0067] When the cutting is started from the notch 66 of the other side edge 82 shown in FIG. 10 , on the front surface 110A, the tip of the cutting is guided by the second cut line 22 and bends upward to reach the fourth cut line 42 of the fourth guide band 40A. It then proceeds along the fourth cut line 42, forming a cut line. On the other hand, on the back surface 110B, the tip of the cutting is guided by the second cut line 22 and bends downward to reach the fourth cut line 42 of the fifth guide band 41B. It then proceeds along the fourth cut line 42, forming a cut line. The two cut lines formed in this way are not line-symmetrical when viewed with the side edge 81 as the axis, so a tab portion can be formed.

[0068] With packaging bag 110, regardless of which of the pair of side edges cutting is started from, the cutting can be guided to fourth cut line 42 on both front surface 100A and back surface 100B. Therefore, it is possible to sufficiently prevent the cutting from deviating from cutting guide bands 65A, 65B and proceeding in an unexpected direction when opening.

[0069] The tear strength of the laminated film parts 91, 92 constituting the packaging bags 100, 110 when torn along the tear guide bands 60A, 60B (65A, 65B) is preferably 0.1 to 2.0 N, more preferably 0.2 to 0.9 N. The packaging bag 100 (110) and the package 200 (210) formed by bonding together the laminated film parts 91, 92 having the tear guide bands 60A, 60B (65A, 65B) with such tear strength can be gripped with the fingers and opened smoothly.

[0070] The tear strength of the present disclosure is measured in accordance with JIS K 7128-1:1998. Figures 12 and 13 are diagrams illustrating a method for measuring tear strength. A laminated film portion 91 (laminated film 91) on which a tear guide band 60A (65A) is formed is processed into a rectangular test piece (length x width = 50 mm x 150 mm) as shown in Figure 12. A slit 52 (length: 75 mm) is made from one end of the center of the short side of the tear guide band 60A (65A) formed across the test piece. The slit 52 is formed so as to pass through the center of the tear guide band 60A (65A). As shown in Figure 13, the two ends cut open by the slit 52 are clamped between jigs 54 and 56, respectively, and pulled vertically at a test speed of 200 mm / min to tear the tear guide band 60A (65A). The strength of the test piece is measured from the beginning of tearing to the completion of tearing. The maximum value of the measured values ​​is defined as the tear strength in the present disclosure. The laminated film portion 92 (laminate film 92) can also be measured in the same manner.

[0071] In Figure 14, a patch 95 contained in a storage compartment 88 formed between a pair of laminated film portions 91, 92 of the packaging bag 100 (packaging body 200) shown in Figures 1 and 2 is shown by a dotted line. As such, the packaging body 200 (210) shown in Figures 1, 2, 10, etc. comprises the packaging bag 100 (110) and a patch contained in the storage compartment of the packaging bag 100 (110). The packaging bag 100 (110) can sufficiently prevent the tearing that occurs when the bag is opened from moving away from the tearing guide bands 60A, 60B (65A, 65B) and proceeding in an unexpected direction, thereby stably forming the tab portion 75. Therefore, the packaging body 200 (210) allows the patch to be smoothly removed. Furthermore, since the packaging bag 100 (110) of the packaging body 200 (210) is provided with a sealing portion 70, even after it has been opened, the sealing portion 70 keeps the bag sealed, allowing the efficacy of the patch to be maintained at a high level for a long period of time.

[0072] The packaging bag 100 (110) and package 200 (210) of the present disclosure can be produced, for example, by the following procedure. First, a polyethylene resin layer 76, a barrier layer 74, and a sealant layer 72 are bonded to a paper or resin film that will serve as a base layer 78 by a known method to obtain laminated films 91, 92. A metal blade is pressed against the surface of the base layer 78 of the obtained laminated films 91, 92 to form cutting guide bands 60A, 60B. Examples of metal blades include rotary blades and push blades. Instead of a metal blade, laser light may be used to form the cutting guide bands 60A, 60B.

[0073] The sealant layers 72 of the laminated films 91, 92 on which the tear guide bands 60A, 60B have been formed are placed opposite each other, and with a fastener tape, for example, sandwiched between them, the sealant layers 72 are bonded together to form a sealed portion 84 and a sealed portion 87 at positions corresponding to the top end 84 and the side end portions 81, 82. This forms a U-shaped unsealed portion surrounded by the sealed portion 87. The sealed portion 87 is cut and trimmed to separate the bag into individual bags. In this way, a packaging bag is obtained. The packaging bag of the present disclosure also includes bags in which no packaged item has yet been placed and part of the outer edge is unsealed.

[0074] Thereafter, notches 61, 62 (notches 64, 66) are formed in the cutting guide bands 60A, 60B at the side edges 81, 82. The packaged item is placed in the unsealed lower edge 85. Thereafter, laminated films 91, 92 are adhered to the lower edge 85, and a sealed portion 87 is also formed in the lower edge 85. In this manner, a package 200 (210) can be manufactured in which the packaged item is placed in the containing portion of the packaging bag 100 (110). However, the manufacturing methods of the packaging bag and package are not limited to this method.

[0075] The above describes several embodiments of the present disclosure. The illustrated packaging bag 100 (110) has a laminate film 91 on the front side and a laminate film 92 on the back side bonded together, and is provided with cutting guide bands 60A, 60B (65A, 65B) on the front and back sides, respectively, extending in a strip-like shape along the transverse direction (x direction) from one side edge 81 to the other side edge 82. The cutting guide bands 60A, 60B (65A, 65B) have, in this order from the upper end side, first guide bands 10A, 10B having a plurality of first cut lines 12 that are inclined at a predetermined angle with respect to the transverse direction (x direction) and are aligned parallel to each other; second guide bands 20A, 20B having a plurality of perforated second cut lines 22 that are inclined at a predetermined angle in the opposite direction to the first cut lines 12 with respect to the transverse direction and are aligned parallel to each other at a predetermined interval; and third guide bands 30A, 30B having a plurality of third cut lines 32 that are inclined at a predetermined angle with respect to the transverse direction (x direction) in the same direction as the first cut lines 12 and are aligned parallel to each other. The packaging bag 100 (110) has a fourth cut line 42 in the form of a perforation extending in the transverse direction between the first guide bands 10A, 10B and the second guide bands 20A, 20B and / or between the second guide bands 20A, 20B and the third guide bands 30A, 30B. The first cut line 12, the second cut line 22, the third cut line 32, and the fourth cut line 42 are spaced apart from one another. The first cut line 12, the second cut line 22, and the third cut line 32 are inclined in opposite directions to one another with respect to the transverse direction (x-direction) on the front and back surfaces.

[0076] The present disclosure is not limited to the above-described embodiments. For example, the laminated film (laminate film portion) may have any layer or thin film between each layer as long as the function of the laminated film is not significantly impaired. The shape of the packaging bag is not limited to a four-sided bag. For example, it may be a two-sided bag, a three-sided bag, or a palm-shaped bag. The packaging bag may not have a sealing portion or a notch. The notch is not limited to a V-shape or a U-shape, and may be, for example, an I-shape or a group of scars. [Example]

[0077] The present disclosure will be described in more detail below with reference to examples, but the present disclosure is not limited to the following examples.

[0078] Example 1 A metal rotary blade was pressed against the surface of a biaxially oriented polyethylene terephthalate film (PET film, thickness: 16 μm) to create a score line, forming a cutting guide band 60A as shown in Figure 3. An anchor coating agent was then applied to the above-mentioned PET film by extrusion lamination, and a 20 μm-thick biaxially oriented polyethylene film and a 7 μm-thick aluminum foil to serve as a barrier layer were laminated together. An anchor coating agent was then applied to this aluminum foil, and a 25 μm-thick polyethylene film was laminated together to serve as a sealant layer. In this way, a laminated film having the laminate structure shown in Figure 9 was obtained. The sizes of each guide band and score line were approximately as follows:

[0079] Width of cutting guide band 60A: 7.2mm Width of first induction band 10A: 0.9 mm Width of second induction band 20A: 4.2 mm Width of third induction band 30A: 0.9 mm Width of 4th induction band 40A: 1.2 mm

[0080] <First cut line 12> L1=1.5mm, D1=0.9mm, S1=2.2mm, θ1=35° <Second break line 22> L2=1.2mm, D2=0.6mm, S2=1.4mm, θ2=40° <Third break line 32> L3=1.5mm, D3=0.9mm, S3=2.2mm, θ3=35° <4th break line 42> L4=2.2mm, D4=0.6mm

[0081] The laminated film was processed into a rectangular test piece (length × width = 50 mm × 150 mm) as shown in Figure 12, and then the tear strength was measured in accordance with JIS K 7128-1:1998 as shown in Figure 13. The measured values ​​were 0.35 to 0.5 N, with the maximum value (tear strength) being 0.5 N. [Industrial Applicability]

[0082] According to the present disclosure, it is possible to provide a packaging bag and a package that can be smoothly opened and the packaged contents can be easily removed. It is also possible to provide a packaging bag and a package that can sufficiently prevent the cutting guide band from moving out of the way and proceeding in an unexpected direction when opening. [Explanation of symbols]

[0083] C1, C2, C3, C4, C5, C6...cutting lines, D1, D2, D3, S1, S2, S3...spacing, θ1, θ2, θ3...angle, 10A, 10B...first induction band, 12...first cut line, 20A, 20B...second induction band, 22...second cut line, 22a, 42a...wired portion, 22b, 42b...wireless portion, 30A, 30B...third induction band, 32...third cut line, 40A, 40B...fourth induction band, 41A, 41B...fifth induction band, 42...fourth cut line, 54, 56...jig, 60A, 60B, 65A, 65B...cutting induction band, 61, 62, 64, 66...notch, 70...sealing portion, 72...sealant layer, 74...barrier layer, 75...grip portion, 76...polyethylene resin layer, 78...base material layer, 81, 82...side edge portion, 84...upper edge portion, 85...lower edge portion, 87...seal portion, 88...container portion, 91, 92...laminated film portion (laminated film), 95...patch, 100, 110...packaging bag, 100A, 110A...surface, 100B, 110B...back surface, 200, 210...packaging body, VL11, VL12, VL21, VL22, VL31, VL32...virtual lines.

Claims

1. A packaging bag comprising a first laminated film portion on a front surface side, a second laminated film portion on a back surface side bonded to the first laminated film portion, and a tear guide band extending in a strip shape along a transverse direction from one side end to the other side end on each of the front surface and the back surface, The cleavage induction zone is a first induction band having a plurality of first cut lines inclined at a predetermined angle with respect to the transverse direction and arranged parallel to one another; a second guide band having a plurality of second perforated cut lines inclined at a predetermined angle in the opposite direction to the first cut lines with respect to the transverse direction and arranged parallel to each other at predetermined intervals; a third induction band having a plurality of third cut lines arranged parallel to each other and inclined at a predetermined angle in the same direction as the first cut line with respect to the transverse direction, a fourth cut line in the form of a perforation extending along the transverse direction between the first guide band and the second guide band and / or between the second guide band and the third guide band; the first score line, the second score line, the third score line, and the fourth score line are spaced apart from one another; the first score line, the second score line, and the third score line on the front surface are inclined in directions opposite to each other with respect to the transverse direction and the first score line, the second score line, and the third score line on the back surface are inclined in directions opposite to each other with respect to the transverse direction, The fourth score line is arranged differently on the front surface and the back surface, The surface is The fourth score line is between the second induction band and the third induction band, When viewed along the transverse direction, the second score line and the third score line are both inclined toward the fourth score line, The back surface is The fourth score line is between the first induction band and the second induction band, When viewed along the transverse direction, the first score line and the second score line are both inclined toward the fourth score line, On the surface, an imaginary line parallel to the transverse direction and passing through lower ends of the plurality of first cut lines intersects with at least some of the perforated second cut lines; On the back surface, an imaginary line parallel to the transverse direction and passing through the upper ends of the third cut lines intersects with at least some of the perforated second cut lines.

2. The packaging bag according to claim 1 , wherein the second score line on the front surface and the second score line on the back surface are arranged so as to be offset from each other in the vertical direction.

3. The packaging bag according to claim 1 or 2, wherein the width of the tear-inducing band is 4 mm or more.

4. The cutting induction band extends from the one side end to the other side end, The packaging bag according to any one of claims 1 to 3, wherein the second guide band includes a notch at the side edge.

5. A storage section for storing the packaged item; The packaging bag according to any one of claims 1 to 4, further comprising: a sealing portion provided between the storage portion and the cutting guide band, the sealing portion being configured to be able to seal the storage portion after opening along the cutting guide band.

6. The packaging bag according to any one of claims 1 to 5, wherein the first laminated film portion and the second laminated film portion each have a laminated structure in which, from the inside, a sealant layer, a barrier layer containing an inorganic substance, a polyethylene resin layer, and a base material layer are laminated in this order.

7. The packaging bag according to any one of claims 1 to 6, wherein the tear strength of each of the first laminated film portion and the second laminated film portion when torn along the tear guide band is 0.1 to 2.0 N.

8. A package comprising the packaging bag according to any one of claims 1 to 7 and a patch contained in the container of the packaging bag.

Images