WO2017169434A1

WO2017169434A1 - Packaging bag

Info

Publication number: WO2017169434A1
Application number: PCT/JP2017/007454
Authority: WO
Inventors: 貴久興梠
Original assignee: 大王製紙株式会社
Priority date: 2016-03-31
Filing date: 2017-02-27
Publication date: 2017-10-05
Also published as: JP2017178432A; JP6182637B1

Abstract

Disclosed is a packaging bag (100) comprising a bag body part (10) that houses a paper roll (R). The bag body part is formed of a packaging film (F) having gas barrier properties and having a property of tearing rectilinearly in a direction substantially orthogonal to the vertical direction. Each of the left and right side surfaces of the bag body part has formed therein a plurality of second notches (52) each having a rectilinear first cut (521) that extends so as to obliquely intersect with one direction, and a rectilinear second cut (522) that extends in said one direction. The plurality of second notches are arranged so as to be separated from one another, and are arranged such that, of two adjacent second notches, a straight line formed by extending the second cut of one second notch along said one direction intersects with the first cut of the other second notch.

Description

Packaging bag

The present invention relates to a packaging bag in which paper hygiene articles such as roll paper such as toilet paper or cartons for tissue paper are packaged.

DESCRIPTION OF RELATED ART Conventionally, the package body which packaged the paper-made hygiene article which gave the fragrance | flavor to toilet paper or a paper tube, for example with the film is known (for example, refer patent document 1).
The film used for the package is generally a polyethylene film or a polypropylene film, but these films are not preferable from the viewpoint of gas barrier properties. The fragrance permeates the film and leaks to the outside during storage and display at the store.
Then, what packaged paper hygiene articles using a gas barrier resin film is proposed (for example, refer to patent documents 2).

Japanese Patent Application Laid-Open No. 2014-223921 Japanese Patent Laying-Open No. 2015-63316

By the way, a packaging bag that is easy to open by using a film having a property of being torn linearly in one direction is known.
However, in this packaging bag, if a perforation is formed so as to be opened in an oblique direction intersecting with the one direction in order to form a larger outlet, the packaging bag is further opened as the number of perforations increases. Although it becomes easy to do, there exists a problem that a fragrance | flavor becomes easy to leak from a perforation. Further, depending on the size of the cut, there is a possibility that foreign matters such as insects may be mixed.

Therefore, an object of the present invention is to provide a packaging bag that can properly store paper hygiene articles and can form a larger opening outlet.

In order to solve the above problems, one embodiment of the present invention provides:
A packaging bag comprising a bag body for storing paper hygiene articles,
The bag body is
It has the property of being torn in a straight line in one direction and is formed from a film having gas barrier properties.
A plurality of notches having a linear first cut extending obliquely intersecting the one direction and a second linear cut extending in the one direction are formed on one surface of the bag body. ,
The plurality of notches are
Arranged so that a straight line extending along the one direction of one notch of the two adjacent notches intersects with the first notch of the other notch while being spaced apart from each other. It is characterized by being made.

Further, the plurality of notches are characterized in that the positions in the other direction substantially perpendicular to the one direction are shifted so that the end portions of the film are stepped when the film is cut open.

In addition, the plurality of notches are
One end of the first cut and one end of the second cut are connected;
The other end of the second cut opposite to the one end is disposed downstream of the other end of the first cut opposite to the one end of the film. It is a feature.

Further, a notch having a linear cut extending in the one direction is formed on the other surface adjacent to the one surface of the bag body portion,
The notch in the other surface and the end portion of the notch located on the most other surface side of the one surface on the side opposite to the second cut are in the other direction substantially orthogonal to the one direction. The position is made substantially equal.

Further, the one direction is characterized by being a direction substantially orthogonal to the vertical direction.

According to the present invention, paper hygiene articles can be properly stored, and a larger opening outlet can be formed.

It is a perspective view which shows the packaging bag of one Embodiment to which this invention is applied. It is a perspective view which shows typically the state by which the taking-out port of the packaging bag of FIG. 1 was cut open. It is a side view which expands and shows a part of the packaging bag of FIG. It is a figure which represents typically the positional relationship of two adjacent 2nd notches.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.
FIG. 1 is a perspective view showing a packaging bag 100 according to an embodiment to which the present invention is applied, and FIG. 2 is a perspective view schematically showing a state in which an outlet 30 of the packaging bag 100 is cut open.

As shown in FIGS. 1 and 2, a packaging bag 100 is a roll of paper rolls R such as toilet paper and paper towels as paper hygiene articles stacked and gusseted with a packaging film F. The bag main body part 10 which accommodates this, and the handle part 20 provided in the upper part of this bag main body part 10 are provided.
In the following description, the direction from the grip portion 20 of the packaging bag 100 to the mounting surface (bottom surface) of the packaging bag 100 is defined as the vertical direction, and one direction orthogonal to the vertical direction is defined as the left-right direction. The direction orthogonal to both directions is defined as the front-rear direction.

In the gusset packaging, a roll paper R is included in a packaging film F formed in a cylindrical shape, and both end openings are sealed by a heat sealing process.
The heat fusion treatment is generally performed at, for example, 160 to 250 ° C., and the packaging film F is particularly suitable for the heat fusion treatment in this temperature range. More specifically, the packaging film F preferably has a heat seal range of JIS Z 1707 of 10 N / 15 mm under the conditions of a pressure of 0.2 MPa, 1 second, and 110 ° C.
In addition, about the procedure of gusset packaging, a well-known method is applicable. Although detailed description is omitted here, for example, one opening portion is formed in a state where a packaging film F formed in advance in a cylindrical shape is pushed into the inside of the cylinder so that both side portions thereof have a cross-section M-time mold. Is sealed by heat-sealing or the like to form a three-sided closed bag-shaped precursor with one side closed, and then the roll paper R, which is a package, is inserted into the bag, and then the other The opening is sealed by heat sealing.

Moreover, the handle part 20 is formed in the said heat sealing | fusion process with the sealing of any one opening part (for example, opening part which becomes upper side in FIG. 1). That is, the handle portion 20 is a surplus portion that is separated from a bag portion (bag main body portion 10) in which a plurality of roll papers R,.
Two

finger hooking holes

21 and 21 are formed at a substantially central portion in the left-right direction of the handle portion 20.

The packaging film F is a resin film having a laminated structure, and includes, for example, an intermediate layer, two outer layers sandwiching the intermediate layer, and two adhesive layers that bond the intermediate layer and the outer layer.

The two outer layers are, for example, polyethylene resin layers having a melting point of 150 ° C. or lower. By making the two outer layers of the packaging film F into polyethylene resin layers, the packaging film F can be sealed by heat-sealing treatment.
Here, the lower melting point is preferable because the fusion treatment can be performed at a low temperature. However, if the melting point is excessively low, for example, a hole may be formed at the time of thermal fusion, and the lower limit is substantially about 80 ° C.
Specific examples of the polyethylene resin layer include a linear low density polyethylene film layer (LLDPE), a low density polyethylene film layer (LDPE), and a medium density polyethylene film layer (MDPE). Of these, a linear low-density polyethylene film layer (LLDPE) having a density of 0.910 to 0.940 g / cm ³ and a melting point of 110 to 120 ° C. is preferable from the viewpoint of heat-fusibility and cost. Note that the two outer layers are not necessarily the same kind of polyethylene resin layer.

The middle layer is, for example, an ethylene-vinyl alcohol copolymer resin layer (EVOH resin layer) having a melting point of 180 ° C. or lower. By using the EVOH resin layer as the middle layer of the packaging film F, it is possible to ensure a high gas barrier property suitable for packaging of a scented toilet roll to which a fragrance has been added, for example, as a whole packaging film F.
A known resin can be used as a specific resin for forming the EVOH resin layer. Examples of commercially available products include Eval manufactured by Kuraray Co., Ltd. and Soarnol manufactured by Nippon Synthetic Chemical Industry Co., Ltd.

In addition, the EVOH resin layer is preferably close to the melting point of the two outer polyethylene resin layers, more preferably 180 ° C. or less, in order to improve the heat fusion property of the packaging film F as a whole. Here, although the EVOH resin layer can lower the melting point to some extent by increasing the ethylene content, it becomes difficult to ensure gas barrier properties with an increase in the ethylene content, and substantially. The lower limit is about 150 ° C.
The ethylene content of the EVOH resin layer is preferably more than 32 mol% and less than 48 mol%, more preferably 38 mol% or more and 44 mol% or less. When the ethylene content is 32 mol% or less, the heat-sealing property of the packaging film F as a whole is lowered, and when the ethylene content is 48 mol% or more, the gas barrier property and the unsealing property described below (in the TD direction). This is because the ease of tearing is reduced.

The adhesive layer is, for example, an acid-modified polyolefin resin layer. Specific examples of acid-modified polyolefin resins include maleic acid-modified polypropylene resins, carboxylic acid-modified polypropylene resins, and maleic anhydride-modified polypropylene resins.

The packaging film F preferably has an oxygen permeability of 40 cc / m ² · day · atm or less.
The polyethylene resin layer constituting the two outer layers described above has a low melting point and excellent heat-fusibility, but has a low gas barrier property. However, in the packaging film F, the polyethylene resin layer is extremely between the two outer polyethylene resin layers. By interposing an intermediate layer which is an EVOH resin layer having a low oxygen permeability, the oxygen permeability can be reduced to 40 cc / m ² · day · atm or less.
Here, the lower limit value of the oxygen permeability of the packaging film F is not particularly limited, but for example, considering that it is a film suitable for toilet roll packaging, such as cost, the lower limit value is substantially lower. Is about 1.0cc / m ² · day · atm.
The oxygen permeability is a value measured under measurement conditions of 23 ° C. and 65% RH based on JIS K 7126 (B).

The packaging film F has a total thickness of 22 to 45 [μm], two outer layers of 5 to 15 [μm] each, an intermediate layer of 2 to 10 [μm], and two adhesive layers The thickness is preferably about 2 to 5 [μm]. Note that the two outer layers and the adhesive layer do not necessarily have the same thickness.
When the packaging film F has the above-described configuration of each resin layer and has this thickness, when the gusset packaging is performed, the portion where the packaging films F are laminated, that is, the handle portion 20 is formed. Even so, heat is sufficiently transmitted to obtain good heat sealability, and the perfume imparted to the roll paper R is effectively prevented from leaking out through the packaging film F. become. In addition, it is possible to ensure moderate flexibility following the shape of the cylindrical roll paper R, and strength that can be easily opened by a human hand but not unintentionally broken.
The thickness of the packaging form F and each layer can be confirmed, for example, by measuring the cross section with an optical microscope.

The packaging film F has a tensile strength in JIS Z 1707 of 20 to 40 MPa, preferably 25 to 35 MPa in the MD direction (vertical direction in FIG. 1), and in the TD direction (horizontal direction and longitudinal direction in FIG. 1). 25 to 45 MPa, preferably 30 to 40 MPa. Further, the packaging film F has an elongation in JIS Z 1707 of 150 to 330%, preferably 160 to 200% in the MD direction, and 520 to 800%, preferably 650 to 750% in the TD direction. The tensile strength and elongation are measured at a tensile speed of 500 [mm / min].
Further, for the packaging film F, the result in the tear test (Elmendorf method) in JIS K 7128 is 200 to 400 N / cm in the MD direction, preferably 250 to 350 N / cm, and 100 to 300 N / cm in the TD direction. Preferably, it is 150 to 250 N / cm.
Thus, the packaging film F is easier to tear in the TD direction than the MD direction, and can be said to have a property of being torn linearly in the left-right direction and the front-rear direction (one direction).

Further, the packaging film F can be produced by, for example, a co-extrusion method using a T-die method, an extrusion laminating method, or the like, and a known method can be arbitrarily selected for forming into a cylindrical shape for gusset packaging. Applicable.

As described above, the packaging film F has a gas barrier property and a property of being torn linearly in the left-right direction and the front-rear direction (one direction) substantially orthogonal to the up-down direction. The bag body 10 formed from the packaging film F is provided with a first notch 51 and a second notch 52 for forming the outlet 30 (see FIG. 2).

That is, a gusset fold portion 40 in which the packaging film F is gusset-folded is provided at the upper end portion in FIG. 1 of the bag main body portion 10, and opposing surfaces of the packaging film F forming the gusset fold portion 40 are opposed to each other. The handle part 20 is formed by joining.
And it has the linear cut | interruption extended in the left-right direction substantially in the center of the left-right direction of the front surface (other surface) 11 corresponding to the surface where the packaging film F of the gusset folding part 40 in the bag main-body part 10 is not folded. A first notch 51 is formed.
The length of the first notch 51 in the left-right direction is preferably 3 to 5 [mm], for example. The reason why the upper limit is set to 5 [mm] is that when it exceeds 5 [mm], there is a possibility that foreign matters such as insects may be mixed. In addition, about a minimum, a smaller value is preferable. A plurality of first notches 51 may be formed apart from each other at substantially the same position in the vertical direction of the bag body 10.

Further, the second side surfaces (one surface) 12 and 12 corresponding to the left and right side surfaces adjacent to the front surface 11 of the bag body portion 10 and the wrapping film F of the gusset folding portion 40 are secondly connected. The notches 52 are respectively formed.
Here, the second notch 52 will be described in detail with reference to FIGS. 3A and 3B. FIG. 3A is a side view showing a part of the packaging bag 100 as viewed from the right side, and FIG. 3B is a diagram schematically showing a positional relationship between two adjacent

second notches

52 and 52.

As shown in FIGS. 3A and 3B, a plurality of (for example, six) second notches 52,... Are formed on each of the left and right side surfaces 12, 12 of the bag body 10.
Each of the plurality of second notches 52,... Has a linear first cut 521 extending obliquely with the front-rear direction (one direction), and a linear second cut 522 extending in the front-rear direction. The one end 521a of the first cut 521 and the one end 522a of the second cut 522 are connected (see FIG. 3B).

Further, the plurality of second notches 52,... Are spaced apart from each other with a substantially equal interval (for example, 30 [mm]). Further, the plurality of second notches 52,... Are arranged with their positions shifted in the vertical direction (the other direction substantially orthogonal to one direction). Specifically, the plurality of second notches 52,... Are shifted in the vertical direction so as to gradually increase from the front side to the rear side on each of the left and right side surfaces 12, 12 in the bag body 10. Is arranged.
Then, the second cut 522 of one second notch 52 (for example, the second notch 52 on the left side in FIG. 3B) of the two adjacent

second notches

52, 52 is extended along the front-rear direction. The straight line (indicated by the alternate long and short dash line in FIGS. 3A and 3B) l intersects with the first cut 521 of the other second notch 52 (for example, the second notch 52 on the right side in FIG. 3B). Has been.
That is, of the two adjacent

second notches

52, 52, the position of the first cut 521 of the other second notch 52 is in the vertical direction of the second cut 522 of the second notch 52. The one end portion on the second notch 52 side is disposed so that the vertical position is substantially equal to or lower than that (on the opposite side to the second cut 522).

Further, each of the plurality of second notches 52,... Has a second end 522b opposite to the first end 522a of the second cut 522, and a second end 521b opposite to the first end 521a of the first cut 521. Is also arranged on the downstream side in the direction in which the packaging film F is cut open. Specifically, the first cut 521 has an acute angle (for example, about 70 °) with the straight line 1 extending along the front-rear direction of the second cut 522 of the adjacent second notch 52. Inclined. In addition, the magnitude | size of the angle which the 1st cut | interruption 521 and the straight line 1 make is an example, and is not restricted to this, The tearing ease of the TD direction resulting from the material of the film F for packaging, and the magnitude | size of the extraction port 30 It can be arbitrarily changed in consideration of the above.
Thereby, in the state by which the packaging film F was cut open, the edge part of the said packaging film F makes a step shape (refer FIG. 2).

Here, the length of each second notch 52 is preferably, for example, 3 to 5 [mm]. The reason why the upper limit is set to 5 [mm] is that when it exceeds 5 [mm], there is a possibility that foreign matters such as insects may be mixed. In addition, about a minimum, a smaller value is preferable.
The length of the first cut 521 is preferably 2 to 4 [mm], for example, and the length of the second cut 522 is preferably 1 to 2 [mm], for example. In addition, the length from the intersection where the second cut 522 of the adjacent second notch 52 extends in the front-rear direction to the one end 521a of the first cut 521 is 2 to 3 [mm]. The length from the intersection to the other end 521b is preferably 1 to 2 [mm].

Further, the distance (interval) in the front-rear direction between the adjacent second notches 52 depends on the length of the bag body 10 in the front-rear direction. For example, in the case of 12 rolls, 20 to 50 [mm] Degree. That is, when the distance between the adjacent second notches 52 is reduced, the number of the second notches 52 formed on the side surface 12 is relatively increased, and the evaluation of the aroma retaining property may be deteriorated. When the size is increased, the number of second notches 52 formed on the side surface 12 is relatively reduced, and the number of steps formed by the end portions of the packaging film F is relatively reduced when the packaging film F is cut open. This is because the opening of the outlet 30 becomes relatively small.

Further, the first notch 51 has straight lines (not shown) extending from the first notch 51 along a direction (left-right direction and front-rear direction) substantially orthogonal to the up-down direction. The positional relationship is such that it intersects the first cut 521 of the second notch 52 located closest to the front surface 11 in the

surfaces

12 and 12. Specifically, the first notch 51 is vertically connected to the other end portion 521b (that is, the lower end portion) of the first cut 521 of the second notch 52 located on the most front surface 11 side on the left and right side surfaces 12, 12. The positions in the direction (direction substantially orthogonal to one direction) are made substantially equal.

The total number of the first notches 51 and the second notches 52 depends on the width and length of each notch. For example, in the case of 12 rolls, the blade thickness of the notch forming cutter is 0.38 [mm]. It is preferable that the total length of all notch cuts is set to be smaller than 55 [mm] (the area of the opening formed by all the notches is 20.9 [mm ² ]). That is, if the total length of all the cuts is greater than 55 [mm], the evaluation of the fragrance retention when the roll paper R is a toilet roll with a fragrance is deteriorated.
Here, for example, if the packaging bag 100 for 12 rolls is converted into a substantially rectangular parallelepiped having a vertical direction of 342 [mm], a horizontal direction of 204 [mm], and a longitudinal direction of 204 [mm], the opening formed by all the notches. The area of the part is preferably smaller than 0.0058% with respect to the surface area of the packaging bag 100 (362304 [mm ² ]). Note that the blade thickness of the notch forming cutter can be arbitrarily changed within the range of 0.1 to 0.7 [mm], for example. If the cutter blade thickness is 0.1 [mm], all notch cuts If the cutter thickness is 0.7 [mm], the total length of all notch cuts is 29.9 [mm].

Examples of the paper hygiene article will be described by exemplifying roll paper R such as toilet paper and paper towel. However, the paper hygiene article is not limited to these examples, and is a carton containing a tissue paper, a paper diaper, or an absorbent. Absorbent articles such as pads and sanitary products may be applied.
Further, for example, twelve toilet paper roll papers R are accommodated in the bag body 10, and specifically, four stages of toilet paper roll paper R are stacked and accommodated in three stages. . The number of roll paper R packaging is an example, and is not limited thereto, and can be arbitrarily changed as appropriate.

The roll paper R may be a toilet roll with a core in which a belt-shaped toilet paper is wound around a paper tube, or a coreless toilet roll also referred to as a coreless. The size of the roll paper R is not particularly limited. For example, the height (width) is 100 to 120 [mm], the winding diameter (roll diameter) is 100 to 120 [mm], and the core diameter. Is generally 10 to 48 [mm], and the winding length is 20 to 100 [m].

The toilet paper constituting the roll paper R is not particularly limited. For example, the number of plies is 1 to 3 plies, the total paper thickness is 100 to 360 [μm], and the rice paper is 11 to 25 g per ply. it is in a range of / m ^2.
In addition, the tsubo is based on the tsubo measure method of JIS P 8124 (1998). The paper thickness was adjusted 5 times under the conditions of JIS P 8111 (1998) and then 5 times using a dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho) under the same conditions. The average value measured.

The roll paper R is a toilet roll with a fragrance to which a fragrance is added. Examples of the position where the fragrance is attached include front and back surfaces of toilet paper, paper tubes, and the like.
As the fragrance, a natural or synthetic fragrance can be used. Specific examples of the fragrance include natural fragrances such as lemon oil, grapefruit oil, rosemary oil, peppermint oil, mandarin oil, lime oil, yuzu oil, chamomile oil, lavender oil, rose oil, spearmint oil, and the like. And synthetic fragrances such as alcohols such as linalool, citronellol, menthol and geraniol. These may be used alone or in combination as a blended fragrance.
In addition, a fragrance | flavor may be diluted using vegetable oils, such as mineral oil, such as dipropylene glycol and paraffin oil, castor oil, and soybean oil, for adjustment of fragrance intensity | strength and volatility.

Next, a method for opening the packaging bag 100 will be described.
The user puts a finger or the like on the first notch 51 on the front surface 11 of the bag body 10 and pulls it upward, more specifically, obliquely rearward with the bag body 10 side fixed. Thereby, the front surface of the bag main body 10 of the packaging film F is cut open from the first notch 51 in the left-right direction. That is, the first notch 51 expands in the left-right direction so that the left and right side surfaces 12, 12 of the bag main body 10 reach the left and right side surfaces 12, 12.
The left and right side surfaces 12, 12 of the bag body 10 are formed by cutting back and forth from the front to the back at a position substantially equal to the portion cut in the front surface 11 in the vertical direction. When the cut is connected to the first cut 521 of the second notch 52 located closest to the front surface 11 side, the cut is opened rearward from the other end 522b of the second cut 522 connected to the first cut 521. Go. Further, when the first notch 52 is cut back to the first cut 521, the second cut 522 connected to the first cut 521 is similarly cut back from the other end 522b. The packaging film F is cut open until reaching the rear surface of the bag body 10.
As a result, the front surface 11 and the left and right side surfaces 12 and 12 of the bag body 10 are cut open to form the outlet 30 (see FIG. 2).

Hereinafter, examples and comparative examples of the present invention will be described.

<Examination of the number of notches>
The aroma retaining property according to the number of notches will be described with reference to the following Examples 1 to 3 and Comparative Examples 1 to 3.

(Packaging bag)
Three layers of four toilet rolls were packed in a packaging film and used for the test.
Packaging bag size: Up and down direction 342 [mm], left and right direction 204 [mm], front and back direction 204 [mm]
Packaging film: Laminated structure in which the middle layer is sandwiched between two outer layers via an adhesive layer, overall thickness 27 [mm]
Middle layer: EVOH resin layer, thickness 3 [μm]
Outer layer: Polyethylene resin layer, thickness 9 [μm]
EVOH resin layer ratio: 11%
Ethylene content: 38mol%
Adhesive layer: Maleic anhydride-modified polypropylene resin layer, thickness 3 [μm]

(notch)
First notch: Length 3.0 [mm]
Second notch: length 2.0 [mm] × 6 on each of the left and right side surfaces <Example 1>, length 2.7 [mm] × 6 <Example 2>, length 4.0 [mm] × 6 pieces <Example 3>, length 4.3 [mm] × 6 pieces <comparative example 1>, length 6 [mm] × 6 pieces <comparative example 2>, length 7.7 [mm] × 6 pieces <comparative example 3>
Length obtained by adding all cuts: 27.0 [mm] <Example 1>, 35.4 [mm] <Example 2>, 51.0 [mm] <Example 3>, 54.6 [mm] <Comparative Example 1>, 75.0 [mm] <Comparative Example 2>, 95.4 [mm] <Comparative Example 3>
Blade thickness of the notch forming cutter: 0.38 [mm]

(Toilet roll)
Size: Height 114 [mm], winding diameter 106 [mm], core diameter 41 [mm]
Toilet paper: 2 ply, paper thickness 135 [μm], 14.5 tsubo per ply [g / m ² ]

(Scent retention test)
Fragrance (Ogawa Fragrance Co., Ltd .: Fruity Floral BR248891) was added to each toilet roll in an amount of 0.06 g, and 12 toilet rolls with fragrance were packaged with a packaging film. It was left to stand for 24 hours under conditions of a temperature of 50 ° C. and a humidity of 50%, and then opened, and whether or not the toilet roll scent remained was subjected to sensory evaluation by five evaluators.

In Table I above, in the aroma retention column, ◯ indicates that all five people “scent firmly”, △ indicates that one or more people are “slightly fragrant”, and × indicates that one or more people are “scented weakly” Is shown.

[Evaluation]
When the total length of the cuts (cut length) was up to 51.0 [mm] (see Examples 1 to 3), the fragrance remained sufficiently. On the other hand, when the cut length is 54.6 [mm] or more (see Comparative Examples 1 to 3), the fragrance is lowered, and when the cut length is 75.0 [mm] or more (see Comparative Examples 2 and 3), the fragrance is weakened. It was.

<Examination of ethylene content of EVOH resin layer>
The examination of the ethylene content of the EVOH resin layer will be described with reference to the following Examples 11 to 16 and Comparative Examples 11 to 22.

(Packaging bag)
Three layers of four toilet rolls were packed in a packaging film and used for the test.
Packaging bag size: Up and down direction 342 [mm], left and right direction 204 [mm], front and back direction 204 [mm]
Packaging film: laminated structure in which an intermediate layer is sandwiched between two outer layers via an adhesive layer Overall thickness: 26 [μm] <Examples 11, 14, Comparative Examples 11, 14, 17, 20>, 27 [μm] < Examples 12, 15, Comparative Examples 12, 15, 18, 21>, 30 [μm] <Examples 13, 16, Comparative Examples 13, 16, 19, 22>
Outer layer: polyethylene (PE) resin layer, thickness 8.5 [μm] <Examples 11 and 14, Comparative Examples 11 and 14>, thickness 9 [μm] <Examples 12 and 15, Comparative Examples 12, 15, and 18> , Thickness 9.5 [μm] <Examples 13 and 16, Comparative Examples 13, 16, 19, 22>, thickness 7.5 [μm] <Comparative Examples 17 and 20>, thickness 8 [μm] <Comparative Example 21>
Middle layer: EVOH resin layer, thickness 3 [μm] <Examples 11, 12, 14, 15; comparative examples 11, 12, 14, 15, 18>, thickness 5 [μm] <Examples 13 and 16, comparison Examples 13, 16, 17, 19-22>
EVOH resin layer ratio: 12% <Examples 11 and 14, Comparative Examples 11 and 14>, 11% <Examples 12 and 15, Comparative Examples 12, 15, and 18>, 17% <Examples 13 and 16, comparative Examples 13, 16, 19, 22>, 19% <Comparative Examples 17, 20, 21>
Ethylene content: 32 mol% <Comparative Examples 17-19>, 38 mol% <Examples 14-16, Comparative Examples 14-16>, 44 mol% <Examples 11-13, Comparative Examples 11-13>, 48 mol% <Comparison Examples 19 to 22>
Adhesive layer: Maleic anhydride-modified polypropylene resin layer, thickness 3 [μm]

(notch)
Examples in which the first notch and the second notch are formed in the packaging bag under the conditions of Example 3 described above so that the total length of all notches of the notch is 51.0 [mm]. No. 16 and Comparative Examples 17 to 22, and those not formed with any notch were referred to as Comparative Examples 11 to 16.
Length obtained by adding all the breaks: 51.0 [mm] <Examples 11 to 16, Comparative Examples 17 to 22>, 0 [mm] <Comparative Examples 11 to 16>
First notch: Length 3.0 [mm]
Second notch: Length 4.0 [mm] x 6 on each of the left and right side surfaces Blade thickness of the notch forming cutter: 0.38 [mm]

(Test of heat-fusibility)
It was visually confirmed whether the heat seal when gusset packaging was good, or when the seal surface was peeled off, the adhesive surface was peeled off immediately without being broken or whether there was no hole. The heat seal temperature at this time was 110 ° C.

(Openability test)
The packaging bag was opened by placing a finger on the notch so that the packaging film was torn to the left and right from the notch. The easiness of opening at this time was sensory-evaluated by five evaluators.

In Table II above, ○ in the column of aroma retention indicates that all five people “scent firmly”, and × indicates that one or more people “scent is weak”.
In the column of heat-fusibility, ◯ indicates that heat sealing was performed satisfactorily, and × indicates that defects such as insufficient heat sealing were observed.
Further, in the openability column, ◯ indicates that all 5 persons can be easily opened, and X indicates that one or more persons have not been able to open.

[Evaluation]
When the ethylene content of the EVOH resin layer was 32 mol% (see Comparative Examples 17 to 19), defective heat sealing was observed regardless of the overall thickness of the packaging film. Further, when the ethylene content was 48 mol% (see Comparative Examples 20 to 22), it was difficult to open even if a notch was formed regardless of the thickness of the entire packaging film.
Thereby, it is considered that the ethylene content of the EVOH resin layer is preferably more than 32 mol% and less than 48 mol%. When the ethylene content is 38 mol% (see Examples 14 to 16), 44 mol% (See Examples 11 to 13), regardless of the thickness of the entire packaging film, a sufficient scent remained even if a notch was formed, and it was easy to open.
Even when the ethylene content was 38 mol% or 44 mol%, when notches were not formed (see Comparative Examples 11 to 16), it was difficult to open regardless of the thickness of the entire packaging film.

As described above, according to the packaging bag 100 of the present embodiment, the bag body 10 has a property of tearing linearly in the left-right direction and the front-rear direction substantially orthogonal to the up-down direction, and has a gas barrier property. A linear first cut 521 extending from the front and rear direction (one direction) obliquely on one surface (left and right side surfaces 12 and 12) of the bag body portion 10 formed from the film F; A plurality of second notches 52 having linear second cuts 522 extending in the front-rear direction are formed, and the plurality of second notches 52,... Of the

second notches

52, 52, a straight line 1 extending along the front-rear direction of the second cut 522 of one second notch 52 intersects the first cut 521 of the other second notch 52. Because it is arranged The wearing film F can be cut open in the front-rear direction via the plurality of second notches 52,..., And the opening 30 has a larger opening size than the cut-off end portion is linear. be able to. For example, the plurality of second notches 52,... Are arranged so as to be shifted in the vertical direction, and the end portions of the packaging film F can be stepped in a state where the packaging film F is cut open.
Moreover, in the storage state of the roll paper R in which the outlet 30 is not formed, not only can the contamination of foreign matters such as insects be properly suppressed as compared with the conventional one in which the perforation is formed, For example, even if the paper hygiene article is provided with a fragrance such as a scented toilet roll, the fragrance can be made difficult to leak.
Therefore, the roll paper R can be properly stored, and the outlet 30 having a larger opening can be formed.

Specifically, since the first notch 51 having a linear cut extending in the left-right direction is formed on the front surface 11 of the bag body 10, the packaging film F is separated from the first notch 51. It is cut open in the left-right direction, and is expanded in the left-right direction so that the cut of the first notch 51 reaches the left and right side surfaces 12, 12 of the bag body 10. Further, the first notch 51 is the other end portion 512b of the first cut 521 of the second notch 52 located on the most front surface 11 side on the left and right side surfaces 12 and 12 (the end portion on the opposite side to the second cut 522). ) And the vertical position are substantially equal to each other, the left and right side surfaces 12 and 12 are cut from the front to the rear at positions substantially equal to the vertical and vertical portions of the front surface 11. The cut formed by cutting is connected to the second notch 52 located closest to the front surface 11, and is cut open from the other end 522 b of the second cut 522 of the second notch 52 to the rear side. Further, when the second notch 52 is cut back one by one, similarly, it is sequentially repeated that the second notch 52 is cut rearward from the other end 522b of the second cut 522. The packaging film F is cut open until reaching the rear surface of the bag body 10. In particular, the plurality of second notches 52 are arranged such that the other end 522b of the second cut 522 is located downstream of the other end 521b of the first cut 521 in the direction in which the packaging film F is cut open. Therefore, when the packaging film F is cut open, it becomes difficult to be caught by the plurality of second notches 52,..., And the packaging film F is smoothly passed through the plurality of second notches 52,. Can be opened. In this manner, the front surface 11 and the left and right side surfaces 12 and 12 of the bag body 10 can be cut open to form a larger outlet 30.

The present invention is not limited to the above-described embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the packaging film F in which the first notch 51 and the second notch 52 are formed is illustrated. However, this is an example, and the present invention is not limited thereto. It is sufficient if two notches 52 are formed.
Further, the second notch 52 is formed on the left and right side surfaces 12 and 12 of the bag body 10, but is not limited to this example. For example, the first notch is formed on the front surface 11. In addition to or instead of 51, a second notch 52 may be formed. For example, a plurality of second notches 52,... May be formed on the front surface 11 so that the end of the packaging film F is substantially “V” -shaped when the packaging film F is cut open.

Further, the packaging film F illustrated in the above embodiment is an example and is not limited thereto, and can be arbitrarily changed as long as the heat sealing property of the packaging film F is not impaired. For example, it is possible to provide a layer used for more effectively forming a laminated film such as a cross-linking agent layer for integrating the outer layer and the intermediate layer.

Furthermore, in the above-described embodiment, a plurality of roll papers R,... (Paper hygiene articles) having substantially the same shape are stacked in the up-down direction on the bag body 10 and aligned in the left-right direction and the front-rear direction (the orthogonal direction). However, the accommodation mode of the plurality of roll papers R is not limited to this, and can be arbitrarily changed as appropriate. That is, it is not always necessary to stack a plurality of roll papers R,... In a vertical direction, and similarly, a plurality of roll papers R,.

In the above embodiment, the left-right direction and the front-rear direction substantially orthogonal to the up-down direction are set as one direction, and the up-down direction is set as the other direction. However, the embodiment is not limited to this, and can be arbitrarily changed as appropriate. is there.

As described above, according to the preferred embodiment of the present invention, the packaging film F can be cut in the front-rear direction via the plurality of second notches 52, and the cut end is a straight line. The size of the opening of the outlet 30 can be made larger than that having a shape. In addition, in the storage state of the roll paper R in which the outlet 30 is not formed, not only can foreign matter such as insects be properly suppressed, but also, for example, a paper hygiene article such as a toilet roll with a scent Even if the fragrance is added, the fragrance can be made difficult to leak.
Thus, the present invention can be used particularly suitably for a technique that can appropriately store the roll paper R and can provide the packaging bag 100 that forms the outlet 30 with a larger opening.

DESCRIPTION OF SYMBOLS 100 Packaging bag 10 Bag main-body part 11 Front surface 12 Side surface 20 Grasping part 30 Taking out port 51 1st notch 52 2nd notch 521 1st cut 522 2nd cut R Roll paper (paper hygiene article)

Claims

A packaging bag comprising a bag body for storing paper hygiene articles,
The bag body is
It has the property of being torn in a straight line in one direction and is formed from a film having gas barrier properties.
A plurality of notches having a linear first cut extending obliquely intersecting the one direction and a second linear cut extending in the one direction are formed on one surface of the bag body. ,
The plurality of notches are
Arranged so that a straight line extending along the one direction of one notch of the two adjacent notches intersects with the first notch of the other notch while being spaced apart from each other. Wrapped packaging bag.
2. The packaging bag according to claim 1, wherein the plurality of notches are arranged so as to be shifted in positions in other directions substantially orthogonal to the one direction so that ends of the plurality of notches are stepped when the film is cut open. .
The plurality of notches are
One end of the first cut and one end of the second cut are connected;
The other end of the second cut opposite to the one end is disposed downstream of the other end of the first cut opposite to the one end of the film. The packaging bag according to 1 or 2.
On the other surface adjacent to the one surface of the bag body portion, a notch having a linear cut extending in the one direction is formed,
The notch in the other surface and the end portion of the notch located on the most other surface side of the one surface on the side opposite to the second cut are in the other direction substantially orthogonal to the one direction. The packaging bag according to claim 1, wherein the positions are substantially equal.
The packaging bag according to any one of claims 1 to 4, wherein the one direction is a direction substantially orthogonal to the vertical direction.