JP2017165462A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag which reduces a load on all of the fingers inserted into a handle hole in carrying toilet rolls or the like in a housed state for a long time.SOLUTION: A packaging bag made of a film in this invention includes: a body part having a housing space for housing a packing object; a grip part which is provided on an upper end side of the body part and has a gusset part and a non-gusset part; and a group of slits which are provided on the grip part and include a plurality of slits separated from each other and a temporarily fastened part formed between the slits, and a handle hole is formed by breaking the temporarily fastened part. The packaging bag further includes a reinforcement film laminated on the grip part, and a part of the reinforcement film is fusion-joined to the grip part. In the packaging bag, when a total amount of thicknesses of the reinforcement film and the non-gusset part is A, and a total amount of thicknesses of the reinforcement film and the gusset part is B, a value of A/B is larger than 0.60.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging bag. Specifically, the present invention relates to a film-made packaging bag for packaging an object to be packed such as roll products such as toilet paper and kitchen paper.

  Conventionally, as a packaging bag for toilet rolls and the like, a gusset is symmetrically folded on both left and right sides of a resin-made cylindrical film to form a main body portion, and a handle portion is formed by folding the upper portion of the main body portion into a flat shape. Those are known (for example, Patent Documents 1 and 2). Generally, a handle hole for inserting a finger by forming a slit is formed in the handle portion of such a packaging bag.

  There are known a form in which the handle part is provided with two handle holes and a form in which one handle hole is provided. In the packaging bag provided with two handle holes, there is a problem that the fingertip becomes painful when being carried in a state in which a toilet roll or the like is accommodated. For this reason, development of a packaging bag provided with one handle hole has been studied.

JP 2011-189965 A JP 2005-001669 A

  However, even in a packaging bag provided with one handle hole, when carrying for a long time in a state where a plurality of toilet rolls or the like are accommodated, the load on one of the fingers inserted into the handle hole is increased. was there.

  Therefore, in order to solve such problems of the prior art, the inventors reduced the load on all fingers inserted into the handle holes even when carrying the toilet roll or the like for a long time, The study was carried out for the purpose of providing a packaging bag with significantly improved stress during carrying.

As a result of intensive studies to solve the above problems, the present inventors determined the ratio of the total thickness of the reinforcing film and the non-gadget part constituting the packaging bag and the total thickness of the reinforcing film and the gusset part. It has been found that by making it within a specific range, a packaging bag can be obtained in which the load on the finger inserted into the handle hole is reduced even when the toilet roll or the like is carried for a long time.
Specifically, the present invention has the following configuration.

[1] A main body having an accommodation space for accommodating an object to be packed, a handle provided on the upper end side of the main body, having a gusset and a non-gusset, and provided on the handle, separated from each other And a slit group including a plurality of slits and a temporary fastening portion formed between the slits, and a packaging bag made of film in which a handle hole is formed by breaking the temporary fastening portion, and packaging The bag further has a reinforcing film laminated on the handle portion, a part of the reinforcing film is fusion bonded to the handle portion, and the total thickness of the reinforcing film and the non-gadget portion is A, and the reinforcing film A packaging bag having a value of A / B larger than 0.60, where B is the total thickness of the gusset portion.
[2] The packaging bag according to [1], wherein the value of A / B is 0.65 or more.
[3] The packaging bag according to [1] or [2], wherein one handle hole is formed in the handle portion.
[4] The packaging bag according to any one of [1] to [3], wherein the reinforcing film has a thickness of 50 μm or more.
[5] A part of the reinforcing film is fusion-bonded to the handle portion by a heat seal portion, and the heat seal portion includes two or more vertical seal lines extending in the vertical direction of the handle portion, and a handle. Any one of [1] to [4], which has two or more horizontal seal lines extending in the left-right direction of the portion, and the slit group exists in a region surrounded by the vertical seal line and the horizontal seal line In the packaging bag.
[6] The packaging bag according to any one of [1] to [5], wherein the slit group further includes a substantially V-shaped slit whose apex is a lower portion in the vertical direction of the handle portion.
[7] The slit group further includes linear dividing slits or perforations extending in the vertical direction at positions spaced downward from the apex of the substantially V-shaped slit in the vertical direction [1] to [6. ] The packaging bag in any one of.
[8] The packaging group according to any one of [1] to [7], wherein the slit group has two or more temporary fixing portions.

  According to the present invention, it is possible to obtain a packaging bag that can reduce the load on all the fingers inserted into the handle holes even when the toilet roll is carried for a long time with the toilet roll or the like accommodated.

FIG. 1 is a perspective view showing an example of a packaging bag containing a toilet roll. FIG. 2 is a plan view showing a state in which the packaging object is not accommodated in the packaging bag. FIG. 3 is a cross-sectional view of the packaging bag. FIG. 4 is an enlarged schematic view of a slit group formed in the handle portion of the packaging bag.

  Hereinafter, the present invention will be described in detail. The description of the constituent elements described below may be made based on representative embodiments and specific examples, but the present invention is not limited to such embodiments. In order to express the contents of the present invention, embodiments of the present invention may be described with reference to the drawings. However, the present invention is not limited to the embodiments of the drawings, and the present specification. The present invention includes modifications and improvements obvious to those skilled in the art based on the matters described in (1).

(Packaging bag)
The present invention relates to a packaging bag for accommodating an object to be packed. The packaging bag of the present invention is provided in a main body portion having an accommodation space for accommodating an object to be packed, a handle portion having a gusset portion and a non-gusset portion, and a handle portion provided on the upper end side of the main body portion. And a slit group including a plurality of slits spaced apart from each other and a temporary fastening portion formed between the slits, and a film-made packaging bag in which a handle hole is formed by breaking the temporary fastening portion . The packaging bag of the present invention further includes a reinforcing film laminated on the handle portion, and a part of the reinforcing film is fusion bonded to the handle portion. And when the sum total of the thickness of a reinforcement film and a non-gusset part is set to A and the sum total of the thickness of a reinforcement film and a gusset part is set to B, the value of A / B is larger than 0.60.
Since the packaging bag of this invention has the said structure, even when carrying for a long time in the state which accommodated the packing target object, the load to all the fingers inserted in the handle hole can be reduced.

  In the packaging bag of the present invention, one handle hole is formed in the handle portion. Conventionally, in a packaging bag provided with one handle hole, the load on the finger inserted into the handle hole tends to be biased to at least one of the fingers, and the load on the finger placed at a specific position There was a problem that was large. The present invention has succeeded in reducing the load on the finger placed at a specific position in this way, and in the packaging bag of the present invention, the load on all the fingers inserted into the handle holes is reduced. be able to.

When the total thickness of the reinforcing film and the non-gadget portion is A, and the total thickness of the reinforcing film and the gusset portion is B, the value of A / B should be larger than 0.60, 0.65 or more. Preferably, it is 0.67 or more, more preferably 0.70 or more. By setting the value of A / B within the above range, the load on the finger inserted into the handle hole can be more effectively reduced.
Note that the thickness A is a total thickness of three sheets of one reinforcing film and two main body films, and the thickness B is a total thickness of five sheets including one reinforcing film and four main body films. That is, when the thickness of one main body film is a and the thickness of one reinforcing film is b, the thickness A is a thickness represented by 2a + b, and the thickness B is a thickness represented by 4a + b. Thickness A and thickness B are the thickness of the said laminated part, Comprising: It is thickness other than a heat seal part.

  FIG. 1 shows a state in which a plurality of products (toilet rolls) in which toilet paper is rolled are accommodated in a packaging bag 100 according to the present invention. As shown in FIG. 1, a packaging bag 100 includes a main body 10 having an accommodation space for accommodating an object to be packed, and a handle provided on the upper end side of the main body 10 and having a gusset portion and a non-gusset portion. The slit group 30 includes a portion 20, a plurality of slits provided in the handle portion and spaced apart from each other, and a temporary fastening portion formed between the slits. In the packaging bag 100, the handle hole 40 is formed by breaking the temporary fastening portion.

  In the example of FIG. 1, a total of 12 toilet rolls are accommodated in the packaging bag 100 in a state where four toilet rolls are arranged in a plane and three are stacked in the vertical direction. However, the number of toilet rolls accommodated in the packaging bag 100 is not limited to this, and may be four, six, eight, or sixteen, for example. In addition, the packaging bag 100 can accommodate not only toilet rolls but also products (kitchen rolls) made of rolls of kitchen paper, disposable diapers, and the like. In the present specification, an article that can be accommodated in the packaging bag 100 is referred to as a “packaging object”.

  The weight of the packing object that can be accommodated in the packaging bag 100 is preferably 0.5 kg or more and 5.0 kg or less. Since this invention has the said structure, even if it is a case where the packing target object of about 5.0 kg is accommodated, the load to all the fingers inserted in the handle hole can be reduced.

  FIG. 2 is a plan view of the packaging bag 100 according to the present invention, and is a plan view showing a state in which an object to be packed is not accommodated in the packaging bag. Here, in the present specification, the “vertical direction” means the vertical direction when the handle portion is on the upper side. In addition, the “left-right direction” means a direction perpendicular to the vertical direction when the packaging bag is folded into a flat shape as shown in FIG. In FIG. 2, the “vertical direction” is indicated by the Y axis, and the “left and right direction” is indicated by the X axis.

  FIG. 3 is a cross-sectional view of the packaging bag 100. FIG. 3 is a cross-sectional view taken along line A-A ′ of the packaging bag 100 in FIG. 2. As shown in FIG. 3, the packaging bag 100 is basically composed of a cylindrical main body film 15. In the example shown in FIG. 3, the left and right sides of the cylindrical main body film 15 are folded inward to form a symmetrical gusset. The gusset has a structure in which a film is folded so that a mountain folded portion 11, a valley folded portion 12, and a mountain folded portion 11 are formed in this order in the thickness direction of the packaging bag 100. The valley folds 12 of the right and left gussets are arranged so as to face each other in the vicinity of the center in the left-right direction of the packaging bag 100 with a certain interval.

  As shown in FIG. 2, a heat seal portion 60 is formed above the main body film 15 constituting the packaging bag 100 by heat-sealing a plurality of overlapping film layers by heat sealing. That is, the upper part of the main body film 15 is bound by the heat seal part 60. After the upper part of the main body film 15 is bound by the heat seal part 60, the packing object is packed in the inside of the packaging bag 100, and then the lower part of the film is bound by an adhesive or a heat sealing process, so that the inside of the packaging bag 100 is obtained. A packing object is accommodated.

  As shown in FIG. 2, the packaging bag 100 includes a main body portion 10 having an accommodation space for accommodating an object to be packed, and a handle portion 20 provided at the upper end of the main body portion 10. That is, the handle part 20 is a part where the film layers laminated in the thickness direction are joined flatly by forming the heat seal part 60 on the cylindrical film. The handle portion 20 is gripped by a hand, for example, when the packaging bag 100 containing the packing object is transported. On the other hand, the main body portion 10 basically does not have the heat seal portion 60 formed, and packs an object to be packed into the internal space from the opened lower portion opposite to the handle portion 20. Is possible.

  As shown in FIG. 2, the packaging bag 100 further includes a reinforcing film 50. The reinforcing film 50 is further laminated on a plurality of film layers constituting the handle portion 20, and reinforces the handle portion 20 to prevent the handle portion 20 from being damaged or torn during transportation. .

  The length of the reinforcing film 50 in the left-right direction is shorter than the length in the left-right direction of the handle portion 20. For example, the length of the reinforcing film 50 in the left-right direction is preferably 50% or more and 95% or less with respect to the length of the handle part 20 in the left-right direction. The reinforcing film 50 is bonded to the central portion in the left-right direction of the handle portion 20. For this reason, there are regions where the reinforcing film 50 does not overlap on both the left and right sides of the handle portion 20.

For example, the reinforcing film 50 may be bonded to one or both of the front side and the back side of the handle portion 20, and is preferably bonded to either the front side or the back side. A part of the reinforcing film 50 is fusion-bonded to the handle portion 20 and is heat-sealed at the heat seal portion 60. As the reinforcing film 50, a material having heat melting properties is selected in the same manner as the main body film 15 constituting the handle portion 20, but it may be the same type or different from the film constituting the handle portion 20 and the like. There may be.
As shown in FIG. 3, for example, when one reinforcing film 50 is bonded to the back side of the handle portion 20, the film overlaps five layers at the portion where the gusset is configured, and the right and left gusset valleys are folded. In the region between the portions 12, the film is overlaid on three layers. Moreover, in the area | region of the right side where the reinforcement film 50 has not overlapped, a film will overlap with 4 layers.

  FIG. 2 shows an example of a heat seal portion 60 in which films are heat-sealed. In the present embodiment, the heat seal portion 60 includes a plurality of linear vertical seal lines 61 extending along the vertical direction (Y-axis direction) and a plurality of linear horizontal surfaces extending along the left-right direction (X-axis direction). A seal line 62 is included. The plurality of vertical seal lines 61 and the plurality of horizontal seal lines 62 respectively heat-bond the laminated main body film 15 and the reinforcing film 50 that form the handle portion 20. Although the width of each seal line 61 and 62 is not specifically limited, For example, it can be 0.5 mm or more and 3 mm or less.

The plurality of horizontal seal lines 62 include a first horizontal seal line 62 a and a second horizontal seal line 62 b that extend from the left end to the right end over substantially the entire left and right direction of the handle portion 20. The first and second horizontal seal lines 62 a and 62 b are formed at positions passing through the vicinity of the upper edge and the lower edge of the reinforcing film 50 so as to straddle the reinforcing film 50.
The first and second horizontal seal lines 62a and 62b are preferably provided with intermittent portions 63 where the main body film 15 is not partially heat-sealed in the left and right regions where the reinforcing film 50 does not overlap. . The intermittent portion 63 of the first horizontal seal line 62a and the intermittent portion 63 of the second horizontal seal line 62b are located substantially on a straight line when viewed in the vertical direction. Further, in the regions on the left and right sides where the reinforcing film 50 is not overlapped, there is no vertical seal line connecting the first horizontal seal line 62a and the second horizontal seal line 62b, and other heat fusion sites. For this reason, the site | part in which these intermittent parts 63 were provided functions as an air hole which lets external air pass in the main-body part 10 of the packaging bag 100. FIG. Thus, by providing an air hole in the handle portion 20, the air in the main body portion 10 can be released to the outside. For this reason, even when a pressure is applied with respect to the main-body part 10, it can prevent that an internal air pressure increases and it can avoid that the main-body part 10 and another site | part burst.

As shown in FIG. 2, in the region where the reinforcing film 50 overlaps, the first vertical seal line 61 a and the second vertical seal line 61 a extending in the vertical direction are interposed between the first and second horizontal seal lines 62 a and 62 b. The vertical seal line 61b is formed. The first and second vertical seal lines 61 a and 61 b are formed in the vicinity of the left end edge and the vicinity of the right end edge of the reinforcing film 50. Since the first and second vertical seal lines 61a and 61b intersect the first and second horizontal seal lines 62a and 62, a substantially rectangular region is defined by these four seal lines. . Then, the slit group 30 is formed in a substantially rectangular region.
That is, in the present invention, the heat seal part has two or more vertical seal lines 61 extending in the vertical direction of the handle part and two or more horizontal seal lines 62 extending in the left-right direction of the handle part. The slit group 30 exists in a region surrounded by the vertical seal line 61 and the horizontal seal line 62. By providing the slit group 30 in the region surrounded by the vertical seal line 61 and the horizontal seal line 62 in this way, when the handle hole 40 is formed, a somewhat strong tensile force or twist is applied to the handle portion 20. Even if it adds this, it can suppress that the handle part 20 is damaged.

  Further, in the region where the reinforcing film 50 overlaps, a third horizontal seal line 62c and a fourth horizontal seal line 62d extending in the left-right direction are formed between the first and second vertical seal lines 61a and 61b. It may be. In this case, the third and fourth horizontal seal lines 62c and 62d have a substantially rectangular shape formed by the first and second vertical seal lines 61a and 61b and the first and second horizontal seal lines 62a and 62b. In the region, it is unevenly distributed at a position closer to the upper side (first horizontal seal line 62a). For this reason, a substantially rectangular region having a relatively small area is defined by four seal lines of the first and second vertical seal lines 61a and 61b and the second and fourth horizontal seal lines 62b and 62d. The And in the packaging bag 100 of this invention, it is preferable that the slit group 30 is formed in the rectangular area | region demarcated by these four seal lines 61a, 61b, 62b, 62d.

The slit group 30 includes a plurality of slits 31 for forming the handle holes 40 in the handle part 20 of the packaging bag 100, and a temporary fastening part that is positioned between the slits 31 and is broken when the handle holes 40 are formed. 32. Each slit 31 penetrates the handle part 20 and the reinforcing film 50 in the thickness direction. That is, the plurality of slits 31 are also formed in the reinforcing film 50.
In the embodiment of the present invention, when the temporary fixing portion 32 is broken, the film portion surrounded by the slit 31 is developed in a flap shape to form a handle hole 40, and this film portion is connected to the handle portion 20. It remains to remain. The slits 31 may be arranged so that the film portions surrounded by the slits 31 are cut out and detached from the handle 20 when the temporary fixing portions 32 are all broken.

  As the main body film 15 constituting the packaging bag 100, a known film having heat melting property can be adopted. For example, a polyethylene film such as an HDPE (high density polyethylene) film, an LDPE (low density polyethylene) film, an LLDPE (linear low density polyethylene) film, a polystyrene film, a polypropylene film, or the like, or a laminated film of these. A similar known film can be used as the reinforcing film 50. In particular, the main body film 15 is preferably a polyethylene film such as an HDPE (high density polyethylene) film, an LDPE (low density polyethylene) film, or an LLDPE (linear low density polyethylene) film, and is an LDPE (low density polyethylene) film. Is more preferable. The reinforcing film 50 is preferably a polyethylene film such as an HDPE (high density polyethylene) film, an LDPE (low density polyethylene) film, or an LLDPE (linear low density polyethylene) film, and is an LLDPE (linear low density polyethylene) film. More preferably.

  The thickness of the main body film 15 is preferably 10 μm or more, more preferably 15 μm or more, further preferably 20 μm or more, and particularly preferably 25 μm or more. Further, the thickness of the main film 15 is preferably 50 μm or less, more preferably 45 μm or less, further preferably 40 μm or less, and particularly preferably 35 μm or less.

  The thickness of the reinforcing film 50 is preferably 30 μm or more, more preferably 40 μm or more, further preferably 45 μm or more, and still more preferably 50 μm or more. Further, the thickness of the reinforcing film 50 is preferably 120 μm or less, more preferably 100 μm or less, and further preferably 95 μm or less.

  When the thickness of the main body film 15 is a (μm) and the thickness of the reinforcing film 50 is b (μm), a: b is preferably 1: 4 to 1: 1, and 1: 3 to 1: 1. It is more preferable that By setting a: b within the above range, the relationship between the total thickness (A) of the reinforcing film and the non-gusset portion and the total thickness (B) of the reinforcing film and the gusset portion can be made a preferable numerical range. The load on all the fingers inserted into the handle holes can be reduced.

  4A and 4B are enlarged views of the shape of the slit group 30 shown in FIGS. As shown in FIG. 4A, the slit group 30 is basically positioned between two outer slits 31a (first slits) positioned on the outer side in the left-right direction and these two outer slits 31a. Two inner slits 31b (second slits). In the example shown in FIG. 4A, the outer slit 31a includes an arc-shaped portion extending in the vertical direction. The arc-shaped portion of the outer slit 31a bulges outward in the left-right direction. The outer slit 31a has a linear portion that extends in parallel with the left-right direction from the upper end of the arc-shaped portion toward the inner side in the left-right direction. That is, in the outer slit 31a, the upper end (upper end) in the vertical direction extends longer toward the inner side in the left / right direction than the lower end (lower end) in the vertical direction. As described above, the outer slit 31a includes an arc-shaped portion extending in the up-down direction and a linear portion extending inward in the left-right direction from the upper end of the arc-shaped portion. On the other hand, the inner slit 31b is a slit extending linearly in parallel with the left-right direction. The inner slit 31b is disposed close to the upper end of the outer slit 31a.

A gap is provided between the outer slit 31 a and the inner slit 31 b, and this gap functions as the temporary fixing portion 32. The temporary fastening portion 32 is a portion that is scheduled to break when the handle hole 40 is formed in the handle portion 20, and the outer slit 31 a and the inner slit 31 b are connected by breaking the temporary fastening portion 32. In FIG. 4A, the temporary fixing portion 32 is indicated by a dotted circle.
In addition, the slit group 30 preferably has two or more temporary fixing portions 32. By forming two or more temporary fastening portions 32, it is possible to prevent the temporary fastening portions from being unintentionally broken and the handle holes 40 from being inadvertently opened. Thereby, it can prevent that a flap part rolls up at the time of the manufacturing process of a packaging bag, or the accommodation of a packing object, and causes operational troubles, such as clogging, on a manufacturing line.

  In addition, it is preferable that an inner side slit is not provided in the lower end side of the outer side slit 31a. For this reason, even if the temporary fixing portion 32 is broken, the film member is not separated from the handle portion 20 and remains as it is.

  As shown in the enlarged view of FIG. 4B, the outer slit 31a has a proximal end A close to the inner slit 31b, and similarly, the inner slit 31b has a proximal end close to the outer slit 31a. B. Here, the proximal end B of the inner slit 31b is disposed at a position displaced from the extended track line L of the outer slit 31a extending from the proximal end A of the outer slit 31a. The “extension trajectory line” here is a virtual line extending from the proximal end portion A of the outer slit 31a in accordance with the trajectory of the outer slit 31a. That is, since a linear portion extending inward in the left-right direction is formed at the upper end portion of the outer slit 31a, the extended track line L of the outer slit 31a also extends inward in the left-right direction. . On the other hand, the proximal end portion B of the inner slit 31b is provided at a position shifted by a predetermined distance downward from the extended track line L of the outer slit 31a in the vertical direction. In particular, it is preferable that the entire inner slit 31b is displaced from the extended track line L of the outer slit 31a. That is, it is preferable that the inner slit 31b does not include any portion that intersects the extended track line L of the outer slit 31a.

  In the present invention, of the two adjacent slits, the end of one slit is provided at a position shifted from the extension trajectory line of the other slit, so that the finger is inserted and held in the area where the slit is formed. When an appropriate twist is applied to the hand portion 20, the temporary fastening portion 32 between the slits can be easily broken. Thereby, even if it is a case where it operates with one hand, the temporary fixing | fixed part 32 can be fractured | ruptured and the handle hole 40 can be formed easily.

To be more specific, as shown in FIG. 4 (b), the linear distance D ₁ of the between the proximal end B of the proximal end portions A and an inner slit 31b of the outer slit 31a is, 1 mm or more 5mm or less It is preferable that Linear distance _{D 1} is more preferably 1.5mm or more, more preferably 2mm or more, and still further preferably at 2.5mm or more. Also, the linear distance _{D 1} is more preferably 4.5mm or less, further preferably 4mm or less, and still further preferably at 3.5mm or less. The linear distance D ₁ With the above-mentioned range, it is possible to prevent the temporary fixing portion 32 between the first slit 31a and second slit 31b will be broken unintentionally. Also, the linear distance D ₁ With the above-mentioned range, it is possible to prevent the temporary fixing portion 32 becomes non expired.

Further, as shown in FIG. 4 (b), the proximal end portion B of the inner slit 31b, from the proximal end A of the outer slit 31a, spaced apart by a distance D ₂ toward the lower side of the vertical direction Yes. This distance _{D 2,} for example is preferably 1mm or more 4mm or less, and more preferably 1.5mm or more 3mm or less. Further, the proximal end B of the inner slit 31b from the proximal end A of the outer slits 31a, are spaced apart at a distance D ₃ towards the inside of the left-right direction. This distance _{D 2,} for example is preferably 1mm or more 4mm or less, and more preferably 1.5mm or more 3mm or less. Thus, the proximal end portion B of the inner slit 31b is located obliquely below the inner side in the left-right direction with respect to the proximal end portion A of the outer slit 31a. That is, the proximal end portion B of the inner slit 31b, spaced downward from the extension trajectory line L extending from the proximal end A of the outer slit 31a along the lateral direction (in parallel) at a distance D _2, further so that the the proximal end portion a of the outer slit 31a along the vertical direction spaced inwardly a distance D ₃ from the virtual line V of (parallel to) extends.

  As described above, in the present invention, the proximal end B of the inner slit 31b is provided at a position shifted from the extended trajectory line of the outer slit 31a for the outer slit 31a and the inner slit 31b adjacent to each other. By shifting the positions of the proximal ends A and B of the outer slit 31a and the inner slit 31b, when inserting a finger into the area where the slit is formed and gripping it, a moderate twist is applied to the handle part 20, The temporary fastening portion 32 between the outer slit 31a and the inner slit 31b is easily broken. For this reason, even if it operates with one hand, the temporary fixing part 32 can be fractured | ruptured and the handle hole 40 can be formed easily.

Further, in the embodiment shown in FIG. 4A, a substantially V-shaped slit 31c is formed on the end side on the inner side in the left-right direction of the two linear inner slits 31b. Here, the “substantially square-shaped slit” means a slit having a shape in which the two linear slits constituting the slit are connected or separated at the apex of the square shape. The substantially V-shaped slit 31c may be connected to the inner slit 31b, or may be formed at a position 1 mm or more and 5 mm or less away from the inner slit 31b. In the substantially V-shaped slit 31c, the portion that is the apex of the V-shape faces the lower side in the vertical direction. That is, it is preferable that the slit group 30 further includes a substantially V-shaped slit 31 c whose apex is the lower part of the handle part 20 in the vertical direction.
In the example shown in FIG. 4A, the two linear slits forming the substantially V-shaped slit 31c are separated from each other at a portion corresponding to the vertex of the V-shape. However, the two linear slits forming the substantially V-shaped slit 31c may be connected. Moreover, it is preferable that the substantially V-shaped slit 31 c is located at the center in the left-right direction of the handle portion 20. For this reason, when an attempt is made to grip the handle portion 20, the middle finger or index finger of a human hand is likely to be inserted into the substantially V-shaped slit 31c. As described above, by providing the substantially V-shaped slit 31 c in the approximate center of the handle portion 20, it becomes easy to insert a finger into the slit group 30. Further, when a fingertip is inserted into the slit group 30, the substantially V-shaped slit 31c is first opened, and then one or more temporary fixing portions 32 existing around the slit are broken. As a result, the handle hole 40 can be easily formed even with one hand.

  Further, as shown in FIG. 4A, a linear dividing slit extending in the vertical direction is located at a position spaced downward in the vertical direction from a portion corresponding to the apex of the substantially V-shaped slit 31c. 31d is formed. The dividing slit 31d can be replaced with a perforation. Thus, the dividing slit 31d bisects the film portion between the two outer slits 31a to the left and right after the temporary fastening portion 32 between the slit 31c and the substantially V-shaped slit 31c breaks, and further bisects the bisector thereof. Reaches the main body 10 and has a function of opening the main body 10. Thereby, the packing object accommodated in the main-body part 10 can be taken out easily. Thus, the dividing slit 31d functions as an opening line of the main body.

  As shown in FIG. 2, the substantially V-shaped slit 31 c and the dividing slit 31 d are located at the center in the left-right direction of the handle portion 20. Specifically, the substantially V-shaped slit 31c and the dividing slit 31d are formed between the valley folds 12 of the left and right gussets of the packaging bag 100 and at a portion where the number of laminated films is reduced. ing. As described above, the substantially V-shaped slit 31c and the splitting slit 31d are formed in the center of the handle portion 20 where the number of laminated films is reduced, thereby forming the substantially V-shaped slit 31c. It becomes easier to insert fingers into the. Further, the dividing slit 31d can be easily broken, and the opening line extending from the dividing slit 31d can easily reach the main body portion 10. As a result, the formation of the handle hole 40 is facilitated, and further, the split slit 31d is easily broken by the insertion of the finger into the substantially V-shaped slit 31c, and the main body portion 10 is easily opened.

  The positional relationship, shape, and the like of each slit constituting the slit group 30 are not limited to the above-described configuration. For example, the inner slit 31b and the substantially V-shaped slit 31c may be separated, and the two linear slits constituting the substantially V-shaped slit 31c are connected at a portion corresponding to the V-shaped apex. It may be. Further, the inner slit 31b may be formed at a position shifted upward in the vertical direction with respect to the outer slit 31a. That is, the end of the inner slit 31b may be displaced upward in the vertical direction with respect to the track extension line of the outer slit 31a.

Further, the inner slit 31b and the linear slit portion extending at the upper end of the substantially V-shaped slit 31c may be inclined obliquely. Thus, in particular, the inner slit 31b is not necessarily formed in a straight line extending in parallel with the left-right direction, and may be formed in a straight line extending inclined with respect to the left-right direction.
Furthermore, the inner slit 31b may be formed in a circular arc shape extending in the left-right direction instead of the linear shape. The arcuate inner slit 31b may have a shape that bulges upward in the vertical direction.

  The features of the present invention will be described more specifically with reference to examples and comparative examples. The materials, amounts used, ratios, processing details, processing procedures, and the like shown in the following examples can be changed as appropriate without departing from the spirit of the present invention. Therefore, the scope of the present invention should not be construed as being limited by the specific examples shown below.

(Example 1)
A gusset is symmetrically folded on the left and right sides of a cylindrical main body film (LDPE (low density polyethylene) and LLDPE (linear low density polyethylene) mixed resin film) having a thickness of 25 μm, and a reinforcing film (LDPE (low density polyethylene) having a thickness of 90 μm is formed. ) Film) was laminated at the center in the left-right direction of the handle part, heat-sealed as shown in FIG. 2, and further a slit group was formed to produce a packaging bag. The thickness A and thickness B in FIG. 3 were measured, and the thicknesses are shown in Table 1. In addition, in FIG. 3, although the arrow which shows thickness A and thickness B is the thickness also including the space between the laminated | stacked films, in fact, the laminated | stacked films are closely_contact | adhered, and the laminated | stacked film Is the total thickness.

(Examples 2 to 15)
A packaging bag was produced in the same manner as in Example 1 except that the thicknesses of the main body film and the reinforcing film were changed as shown in Table 1. Thickness A and thickness B were as shown in Table 1.

(Measurement)
The thickness of the main body film and the reinforcing film was measured using a thickness meter (Toyo Seiki, PEACOCK DIGITAL GAUGE).

(Evaluation)
The sense of discomfort given to the finger by the handle during transportation was actually carried out and subjected to sensory evaluation. Specifically, 9 packaging bags obtained in the above production examples were prepared, and 3 bags were filled with trait rolls each having a different weight. Thereafter, three judges were given one bag each with three different weights of toilet rolls, and they were allowed to walk continuously for 30 minutes without changing their hands. In addition, when a judge has a toilet roll bag, the second finger to the fifth finger are inserted into the handle holes so that a load is applied between the first joint to the second joint of each finger. I have a roll-pack. The load on the finger during the 30-minute walk was evaluated according to the following evaluation criteria.
○: There is no sense of incongruity on the fingers when walking.
Δ: A little uncomfortable feeling is felt after walking for 30 minutes.
X: A feeling of strangeness is felt by walking for 30 minutes.

  As can be seen from Table 1, as the A / B value decreases from 0.60, the feeling of discomfort with the finger during transport increases, and the tendency becomes more pronounced as the transport weight increases. Further, it can be seen that when the value of A / B is 0.65 or more, the sense of discomfort to the finger during conveyance is improved.

DESCRIPTION OF SYMBOLS 10 Main body part 11 Mountain fold part 12 Valley fold part 15 Main body film 20 Handle part 30 Slit group 31 Slit 31a Outer slit (1st slit)
31b Inner slit (second slit)
31c Substantially V-shaped slit 31d Dividing slit 32 Temporary fastening portion 40 Handle hole 50 Reinforcing film 60 Heat seal portion 61 Vertical seal line 62 Horizontal seal line 63 Intermittent portion 100 Packaging bag

Claims (8)

A main body having an accommodating space for accommodating a packing object;
Provided on the upper end side of the main body portion, a handle portion having a gusset portion and a non-gusset portion,
A slit group including a plurality of slits provided in the handle portion and spaced apart from each other and a temporary fixing portion formed between the slits;
A packaging bag made of a film in which a handle hole is formed by breaking the temporary fastening part,
The packaging bag further includes a reinforcing film laminated on the handle portion,
A part of the reinforcing film is fusion bonded to the handle part,
A packaging bag in which the value of A / B is larger than 0.60, where A is the total thickness of the reinforcing film and the non-gusset portion and B is the total thickness of the reinforcing film and the gusset portion.   The packaging bag according to claim 1, wherein the value of A / B is 0.65 or more.   The packaging bag according to claim 1 or 2, wherein one handle hole is formed in the handle portion.   The packaging bag according to claim 1, wherein the reinforcing film has a thickness of 50 μm or more. A part of the reinforcing film is fusion-bonded to the handle part by a heat seal part,
The heat seal part has two or more vertical seal lines extending in the vertical direction of the handle part, and two or more horizontal seal lines extending in the left-right direction of the handle part,
The said slit group is a packaging bag as described in any one of Claims 1-4 which exists in the area | region enclosed by the said vertical seal line and the said horizontal seal line.   The packaging bag according to any one of claims 1 to 5, wherein the slit group further includes a substantially V-shaped slit whose apex is a lower portion in the vertical direction of the handle portion.   The slit group further includes a linear dividing slit or perforation extending in the vertical direction at a position spaced downward from the apex of the substantially V-shaped slit in the vertical direction. The packaging bag of any one of these.   The said slit group is a packaging bag of any one of Claims 1-7 which has the said temporary fixing part two or more places.

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