JP5717429B2 - Packaging bag - Google Patents

Description

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

2. Description of the Related Art Conventionally, a packaging bag is known in which a handle portion is formed on an upper portion of a bag main body portion that accommodates paper hygiene articles.
In this packaging bag, a broken line (perforation) is formed so as to extend from the upper surface panel portion to the side panel portion of the bag body portion, and is cut along the broken line at the time of use for taking out paper hygiene articles. There is one configured to form an opening (see, for example, Patent Document 1). In some cases, a broken line (perforation) for forming an opening for taking out disposable sanitary articles is formed from the upper end of the side surface of the bag main body downward (see, for example, Patent Document 2).

Japanese Patent No. 3724931 Japanese Utility Model Publication No. 6-30081

  However, in Patent Document 1, a part of the opening for taking out the paper hygiene article is formed so as to open upward, so that external dust and dust enter the packaging bag through the upper opening. Then, there is a problem of adhering to paper hygiene articles. That is, when a plurality of paper hygiene articles are contained inside the packaging bag, there are paper hygiene articles that are not used immediately after opening but are stored in the packaging bag and stored. External dust and dust easily adhere to the paper hygiene article. Therefore, when a plurality of paper hygiene articles are contained in the packaging bag, the storage state of the paper hygiene articles after opening is deteriorated, and the paper hygiene articles cannot be stored hygienically. End up.

In addition, in the case where the opening for taking out is formed long in the vertical direction as in Patent Document 2, in consideration of the storage property of the paper hygiene article that is not used immediately after opening, the vertical direction of the opening There is also a problem that the width in the orthogonal direction cannot be sufficiently increased, and it becomes difficult to take out the paper hygiene article from the packaging bag.
Further, the second opening portion is provided with straight cuts parallel to each other inclined by 10 to 80 degrees, and the cuts adjacent to each other on the upper and lower sides are arranged on the outer side in the width direction of the upper cut (end) and the bottom. An end (starting end) on the inner side in the width direction of the side cut is provided so as to be positioned on the same straight line extending in the vertical direction. Thereby, when tearing, it is the structure which tears linearly from the terminal end of an upper cut toward the start end of a lower cut, and opens. In this case, when the film flow direction and the opening direction are the same, the film is easy to open, but when the film flow direction and the opening direction do not match, the film moves from the end of the upper cut to the start of the lower cut. Without tearing on the extension line of the upper cut, or because the tear strength is high. In addition, since the point is torn from the point toward the beginning of the lower cut from the end of the upper cut, if the tear is not along the same straight line extending in the vertical direction, the tear direction is the lower side. There is also a risk that the opening part will be messed up and the package will be unsuitable for storage.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a packaging bag capable of easily taking out a paper hygiene article from the packaging bag and hygienically storing the paper hygiene article accommodated without being used after opening. Is to provide.

In order to solve the above-mentioned problem, the invention described in claim 1
A packaging bag comprising a bag body for storing a plurality of paper hygiene articles,
The bag body part is formed by forming a film body, and has a side part extending substantially parallel to the up-down direction, which is the stretching direction of the film body,
The side surface portion is provided with a perforation that forms an outlet of the paper hygiene article extending in a predetermined direction intersecting with the vertical direction by being cut open.
The perforation has a plurality of upper and lower cuts extending in the up and down direction, and the plurality of upper and lower cuts as a whole form a curved portion that is convex in a direction opposite to the direction in which the perforation is cut open. It is characterized by being arranged.

According to the first aspect of the present invention, the inner part of the perforation is cut and opened along a predetermined direction intersecting with the vertical direction, thereby forming an outlet for the paper hygiene article extending in the predetermined direction. Compared to the case where the outlet is formed so as to open upward, the paper sanitary article stored in the packaging bag is not used immediately after opening but is stored in the packaging bag. Dust can be made difficult to adhere, and the paper hygiene article can be stored hygienically.
Further, the perforation is formed with a plurality of upper and lower cuts along the vertical direction substantially parallel to the direction of stretching of the film body, so that the packaging bag is gripped by the user so that the bag body portion is predetermined in the vertical direction. When it is pulled with the force of, it can be made difficult to tear compared with the other cut | interruption formed along the direction which crosses the extending direction of a film body.
Thereby, in the packaging bag formed so that the perforation which forms the taking-out opening of paper hygiene articles may extend in the predetermined direction which intersects with the up-and-down direction, the difficulty of tearing is maintained in the unopened state of the taking-out opening. As a result, the width of the outlet (perforation) in the direction perpendicular to the vertical direction can be made sufficiently large, and the paper hygiene articles can be easily taken out from the packaging bag individually. .

The invention according to claim 2 is the packaging bag according to claim 1,
Among the plurality of upper and lower cuts, adjacent ones are arranged so as to overlap each other in the vertical direction.

  According to the second aspect of the present invention, even if the upper and lower cuts are harder to tear than other cuts, the adjacent ones overlap each other in the vertical direction, that is, the adjacent upper and lower cuts are adjacent to each other. Since at least a part of them faces each other, one upper and lower cuts in the downstream direction in which the perforation is cut open can be opened continuously with the other upper and lower cuts on the upstream side, and the perforation is opened. Can be made easier. Accordingly, it is possible to provide a perforation that maintains the difficulty of tearing in an unopened state and is easy to open when opened.

The invention according to claim 3 is the packaging bag according to claim 2,
The perforation is provided with two upper and lower linear portions extending in the left-right direction, adjacent to the curved portion.
The linear portion may be have a plurality of oblique slits extending in an oblique direction crossing the orthogonal direction substantially orthogonal to the vertical direction and the vertical direction.

According to the invention described in claim 3, the linear portion extending in the left-right direction has an up-down direction substantially parallel to the stretching direction of the film body and an oblique direction intersecting with an orthogonal direction substantially orthogonal to the up-down direction. since a plurality of oblique slits which extend are formed in, can be easily torn than the stretching direction substantially parallel to the upper and lower cuts of the film body, Ru can be easily opened the perforations.

The invention according to claim 4 is the packaging bag according to claim 3 ,
In the bag body, a plurality of the paper hygiene articles having substantially the same shape are stacked in the vertical direction,
The length of the interval between the two upper and lower linear portions is longer than half the vertical direction of the paper hygiene article and not more than the vertical length of the paper hygiene article. It is a feature.

According to invention of Claim 4, the length of the space | interval of two upper and lower linear parts extended in the left-right direction of a side part is longer than 1/2 length of the up-down direction of paper hygiene articles, In addition, since the length of the paper hygiene article is equal to or less than the length in the vertical direction, a plurality of paper hygiene articles stacked in the vertical direction can be easily taken out individually and stored without being used after opening. Can be prevented from popping out of the packaging bag.

The invention according to claim 5 is the packaging bag according to claim 3 or 4 ,
In the bag body portion, a plurality of the paper hygiene articles having substantially the same shape are housed side by side in an orthogonal direction substantially orthogonal to the vertical direction,
The side portion has a planar shape extending substantially parallel to the vertical direction and the orthogonal direction,
The length of the linear portion is longer than the length of the paper sanitary article in the orthogonal direction and is equal to or shorter than the length of the side surface portion in the orthogonal direction.

According to the fifth aspect of the present invention, the length of the two upper and lower linear portions extending in the left-right direction of the side surface portion is longer than the length of the paper hygiene article in the orthogonal direction, and is orthogonal to the side surface portion. It is easy to take out a plurality of paper hygiene articles arranged in the orthogonal direction individually and is stored without being used after opening from the packaging bag. Jumping out can be prevented.

  According to the present invention, the inner part of the perforation is cut and opened along a predetermined direction intersecting with the vertical direction, whereby an outlet for paper hygiene articles extending in the predetermined direction can be formed. Compared with what is formed so that may open upward, the paper hygiene article of the state accommodated without opening after opening can be stored hygienically.

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 extraction opening was cut open from the packaging bag of FIG. It is a front view which expands and shows the perforation which forms the taking-out port of the packaging bag of FIG. It is a figure which shows an example of a universal tension compression tester typically. It is a figure for demonstrating the Example which concerns on this invention. It is a figure for demonstrating the Example which concerns on this invention.

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 15 is cut open from the packaging bag 100.

As shown in FIG. 1, a packaging bag 100 is obtained by stacking roll paper R such as toilet paper and paper towel as a paper hygiene article and packaging it with a polyethylene film or the like (hereinafter referred to as a film body F). , A bag main body portion 10 for storing the roll paper R, and a handle portion 20 provided on the upper portion of the bag main body portion 10.
In the following description, the direction from the handle portion 20 of the packaging bag 100 to the placement 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, and the vertical direction and the left-right direction. The direction orthogonal to both directions is defined as the front-rear direction.

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 rolls R are accommodated in the bag body 10, and specifically, four stages of toilet paper rolls R are stacked and accommodated. . In addition to this, eight rolls of toilet paper rolls R, each containing four rolls of toilet paper R in four stages, and three rolls of roll paper R in six rolls of toilet paper are stacked. There is also a case in which roll paper R of 18 toilet papers is accommodated.

The packaging bag 100 is a bag that is closed by sealing (for example, heat sealing) the upper end side and the lower end side of the tubular film body F. For example, the opposite film surfaces on the upper end side are joined to form the handle portion 20, and the tubular film portion on the lower end side of the bag body portion 10 that accommodates the roll paper R of 12 toilet papers is sealed. What formed the bag bottom is a packaging bag 100 in a state where toilet paper is packaged and displayed at a retail store or the like.
In addition, as a specific example of packaging of the cylindrical film body F, a known caramel packaging, gusset packaging, shrink packaging, etc. are mentioned, for example. Further, the cylindrical film body F is stretched in the flow direction of the film at the time of manufacture, and the stretching direction of the film body F is substantially parallel to the vertical direction of the packaging bag 100.
In addition, for example, in the case of a polyethylene film, the thickness of the film body is generally 25 to 30 μm.

The bag body portion 10 of the packaging bag 100 has front, rear, left and right side portions 11, 12, 13, 14 that extend substantially parallel to the vertical direction.
The front side surface portion 11 is provided with a perforation 30 that forms an outlet 15 for the roll paper R (sanitary article). That is, the outlet 15 is formed by cutting the inner part of the perforation 30 along the perforation 30 (see FIG. 2).

Here, the shape of the perforation 30 will be described in detail with reference to FIG.
FIG. 3 is an enlarged front view showing the perforation 30 forming the outlet 15 of the packaging bag 100.

  The perforation 30 is formed so as to extend in the left-right direction on the side surface portion 11 on the front side, and is adjacent to the first curved portion 31 on which a user's finger or nail is hooked. A second curved portion 32 and upper and lower linear portions 33 and 34 adjacent to the second curved portion 32 are provided.

The first curved portion 31 is formed at the rightmost end of the perforation 30 and has a plurality of cuts 31a,. The plurality of cut lines 31a,... Are arranged in a curved shape that protrudes rightward as a whole when, for example, the perforation 30 is cut open from the right to the left.
Further, the first curved portion 31 has a narrow interval between the plurality of cuts 31a,... So that the user's fingers, nails and the like can be easily opened. Similarly, among the plurality of cuts 31a of the first curved part 31, a part of the cuts 31a on the second curved part 32 side is such that the first curved part 31 can be easily opened. It is formed so as to be along the left-right direction substantially orthogonal to the stretching direction.

  The second curved portion 32 is disposed on the left side of the first curved portion 31. Specifically, the second curved portion 32 has a plurality of upper and lower cuts 32a,... Having substantially the same length, and the upper and lower cuts 32a are the left cuts (perforated lines 30) of the first curved portion 31. It is arranged so as to intersect with other cuts 31a.

  In addition, for example, when the perforation 30 is cut open from the right to the left, the second curved portion 32 has a plurality of upper and lower cuts 32a constituting the second curved portion 32 as a curve convex to the right as a whole. It is arranged. That is, the plurality of upper and lower cuts 32a constituting the second curved portion 32 are arranged so as to have a convex shape in a direction opposite to the direction in which the perforation 30 is cut and opened as a whole at an approximately equal interval. ing.

  As described above, the plurality of upper and lower cuts 32a constituting the second curved portion 32 are formed along the vertical direction substantially parallel to the stretching direction of the film body F. Therefore, when the handle part 20 of the packaging bag 100 is gripped by the user and the bag body part 10 is pulled with a predetermined force in the vertical direction, the film body F is formed along the direction intersecting with the extending direction. It is possible to make the plurality of upper and lower cuts 32a,.

Also, among the plurality of upper and lower cuts 32a,..., Adjacent ones are arranged so as to overlap each other in the vertical direction.
Here, the overlapping width (opposite length) of the adjacent upper and lower cuts 32 a,... Is set in consideration of the ease of opening the perforation 30. Specifically, in the case of a polyethylene film having a thickness of 25 to 30 μm, adjacent upper and lower cuts 32a,..., The overlapping width is, for example, greater than 0% and not more than 50%, preferably not less than 20% and not more than 30%. It has become.

  Of the plurality of upper and lower cuts 32a constituting the second curved portion 32, the two left and right upper cuts 32a and 32a are diagonal cuts (perforated lines 30) at the right ends of the upper and lower linear portions 33 and 34, respectively. Are arranged so as to intersect with other cut lines 33a and 34a.

The upper and lower linear portions 33 and 34 are arranged on the left side of the second curved portion 32. Specifically, each of the upper and lower linear portions 33, 34 has a plurality of oblique cuts 33a, 34a having substantially the same length, and the plurality of oblique cuts 33a, 34a as a whole along a horizontal direction. Each linear part 33 and 34 is formed by arrange | positioning.
Further, the plurality of oblique cuts 33a constituting the upper linear portion 33 are arranged in the right direction from the upper left corner portion of the front side surface portion 11, so that the upper linear portion 33 extends in the left-right direction. It is formed to extend. Similarly, the plurality of diagonal cuts 34a constituting the lower linear portion 34 are spaced from the upper linear portion 33 in the vertical direction by a predetermined distance from the left end of the front side portion 11 to the right. By being arranged, the lower linear portion 34 is formed to extend in the left-right direction.

Here, the interval between the upper and lower linear portions 33, 34, that is, the length h in the vertical direction of the perforation 30 is longer than the length in half in the vertical direction of the roll paper R (paper hygiene article). And it is preferable that it is below the length of the said roll paper R in the up-down direction. In particular, the upper linear portion 33 overlaps the substantially upper end of the uppermost roll paper R in the front-rear direction, and the lower linear portion 34 extends downward from the upper end of the roll paper R. It is preferable to be disposed at a position that overlaps in the front-rear direction with a position that is 2/3 of the length in the vertical direction.
Thereby, it is easy to take out the plurality of roll papers R,... Stacked in the vertical direction individually, and prevent the roll paper R in a state of being stored without being used after opening from the packaging bag 100 from jumping out. Can do.

In the upper linear portion 33, a plurality of oblique cuts 33a,... Are formed from the upper left to the lower right (downwardly to the right), and the lower linear portion 34 has a plurality of oblique cuts 34a,. Is formed from the lower left to the upper right (in a diagonally upward direction to the right). That is, the diagonal cuts 33a and 34a extend in an oblique direction intersecting with the vertical direction and the horizontal direction.
As described above, the plurality of oblique cuts 33 a and 34 a constituting the upper and lower linear portions 33 and 34 are formed along an oblique direction intersecting with the extending direction of the film body F. Therefore, when the handle part 20 of the packaging bag 100 is gripped by the user and the bag main body part 10 is pulled in a vertical direction with a predetermined force, the film body F extends along the horizontal direction substantially orthogonal to the stretching direction. Compared with the cuts that are formed, it is possible to make the plurality of diagonal cuts 33a, 34a difficult to tear.

The plurality of oblique cuts 33a and 34a have, for example, a substantially equal predetermined angle. That is, the angle formed between the plurality of oblique cuts 33a and 34a and the straight line extending in the left-right direction is substantially equal.
Here, the angles of the diagonal cuts 33a and 34a constituting the upper and lower linear portions 33 and 34 are set in consideration of the ease of tearing and the difficulty of tearing the plurality of diagonal cuts 33a and 34a. Specifically, in the case of a polyethylene film having a thickness of 25 μm, the angle of each oblique cut is, for example, about 30 to 60 degrees, but about 45 to 60 degrees is the ease of tearing the plurality of oblique cuts (sewing machine). This is preferable in terms of both the ease of opening the eye 30 and the difficulty of tearing.

In addition, in each of the upper and lower linear portions 33 and 34, the plurality of oblique cuts 33a and 34a are disposed at substantially equal intervals. The interval between the plurality of oblique cuts 33a and 34a is wider than the interval between the plurality of upper and lower cuts 32a constituting the second curved portion 32.
That is, when opening the perforation 30, the upper and lower straight lines 32a of the second curved line 32 are more difficult to tear than the oblique cuts 33a and 34a of the upper and lower straight lines 33 and 34. The intervals between the plurality of upper and lower cuts 32a,... Are set narrower. Further, by setting the interval between the plurality of oblique cuts 33a, 34a of the upper and lower linear portions 33, 34 wider than the interval between the plurality of upper and lower cuts 32a,... Before the perforation 30 is cut open, When the main body 10 is pulled in a vertical direction with a predetermined force, it is possible to make the upper and lower linear portions 33 and 34 provided with the plurality of oblique cuts 33a and 34a difficult to tear.

The length of the perforation 30 in the left-right direction (orthogonal direction substantially perpendicular to the up-down direction), that is, the length from the left end of the upper and lower linear portions 33, 34 to the right end of the first curved portion 31 is It is longer than the length in the left-right direction of one roll paper R (paper hygiene article), and is equal to or less than the length in the left-right direction of the front side surface portion 11. More specifically, the length of the perforation 30 in the left-right direction is, for example, the length in the left-right direction of 1.5 roll papers.
Therefore, when the inner part of the perforation 30 is cut open from right to left along the perforation 30, the left and right outlets 15, more specifically, the left and right of the roll paper R1.5 are left and right. An outlet 15 having a length in the direction is formed.

Accordingly, among the plurality of roll papers R,..., The upper left roll paper R can be easily taken out, and then the upper right one roll paper R can be taken out sufficiently. While the roll paper R can be taken out through the outlet 15, when storing the roll paper R without using it, a part of the roll paper R (for example, the right side portion) is the front surface. Since it is covered with the film body F from the side, the roll paper R can be prevented from jumping out of the packaging bag 100.
In this way, it is easy to individually take out a plurality of roll papers R arranged in the left-right direction, and prevent the roll paper R in a state of being accommodated without being used after being opened from jumping out from the packaging bag 100. Can do.

  Examples of the present invention and comparative examples will be described below. In the following examples and comparative examples, the packaging bags according to the present invention were tested as molded from a film body.

<Overlap test>
The degree of overlap in the extending direction (vertical direction) of the plurality of upper and lower cuts will be described with reference to the following Examples 1 to 12 and Comparative Examples 1 to 8.

(Test film)
Film pieces: rectangular film pieces using polyethylene films of thickness 25 μm and 30 μm, each polyethylene film having a length in one direction parallel to the stretching direction A of 10 cm and a length perpendicular to the length of 15 cm. T1 was created and used for testing.
Examples 1 to 6 and Comparative Examples 1 to 4 were tested using a polyethylene film having a thickness of 25 μm, and Examples 7 to 12 and Comparative Example 5 were tested using a polyethylene film having a thickness of 30 μm. ˜8.

(Shape of upper and lower cuts)
Length of each upper and lower cut [mm]: 10
Spacing between adjacent ones in the direction orthogonal to the stretching direction A [mm]: 5
Direction of formation of upper and lower cuts: direction parallel to stretching direction A of each polyethylene film (see FIGS. 5 (a) and 5 (b))
Width [mm] (percentage) where upper and lower cuts overlap in the vertical direction: 1.0 (10%) <Examples 1 and 7>, 2.0 (20%) <Examples 2 and 8>, 2.5 (25%) <Examples 3, 9>, 3.0 (30%) <Examples 4, 10>, 4.0 (40%) <Examples 5, 11>, 5.0 (50%) <Examples 6, 12>, -2.5 (-25% ) <Comparative Examples 1, 5>, 0 (0%) <Comparative Examples 2, 6>, 6.0 (60%) <Comparative Examples 3, 7>, 7.5 (75%) <Comparative Examples 4, 8>
Here, in the adjacent upper and lower cuts, a straight line that passes through one end of one cut and extends in a direction orthogonal to the stretching direction A of the polyethylene film passes through a portion inside the other end of the other cut. In this case, when the straight line is positioned on the other end of the other cut, the overlapping width is 0 mm (0%). In addition, when a straight line passing through the end of one cut passes through a portion outside the other end of the other cut, the adjacent upper and lower cuts are not overlapped at all, this state, -Represented with a "minus" sign.
Each film piece T1 has a 2 cm × 8 cm long holding piece F1 (see FIGS. 5A and 5B) that is held by a lower chuck 202 of a universal tensile compression tester 200 (described later). And a plurality of upper and lower cuts are formed in a substantially “C” shape as a whole by being continued to the holding piece F1.
5A shows a state in which the upper and lower cuts are not overlapped at all in the vertical direction, and FIG. 5B shows a state in which the upper and lower cuts are overlapped at a predetermined rate in the vertical direction. ing.

(Measurement of force required for tearing)
The test was conducted using a universal tensile / compression tester 200 (model number: TG-200N, number: 1084601, Minebea Co., Ltd .; see FIG. 4). One end of each of the film pieces T1 of Examples 1 to 12 and Comparative Examples 1 to 8 is held by the upper chuck 201 and the holding piece F1 is held by the lower chuck 202 so that the upper chuck 201 is moved at a speed of 30 mm / min. Raise 50mm. At this time, the force [cN] required to tear a plurality of upper and lower cuts was measured. The above test was performed three times for each film piece T1.

(Measurement of ease of tearing)
While holding one end part of each film piece T1 of Examples 1-12 and Comparative Examples 1-8 with one hand and holding the holding piece part F1 with the other hand, both hands are relatively spaced apart. To tear multiple top and bottom cuts. The sensory evaluation of the ease of tearing at this time is evaluated in five stages, and the larger the value, the easier it is to tear. Specifically, when it was very easy to tear, it was written as “5”, when it was a little easy to tear, it was written as “4”, and when it could not be said, it was written as “3”, which was a little difficult to tear. In this case, it is expressed as “2”, and when it is very difficult to tear, it is expressed as “1”. The above test was performed three times for each film piece T1.

Table 1 shows the measurement results of Examples 1 to 6 and Comparative Examples 1 to 4 tested using a polyethylene film having a thickness of 25 μm. Table 2 shows the measurement results of Examples 7 to 12 and Comparative Examples 5 to 8 tested using a polyethylene film having a thickness of 30 μm.

[Evaluation]
Adjacent upper and lower cuts do not overlap at all in the vertical direction, and the vertical distance between one end of one cut and the other end of the other cut is 2.5 mm apart (Comparative Example 1, The force required for tearing in 5) is that the distance between the upper and lower ends of the adjacent upper and lower cuts is 0 mm (Comparative Examples 2 and 6), and the adjacent upper and lower cuts are vertically moved. It became larger than what overlapped predetermined width (Examples 1-12, Comparative Examples 3, 4, 7, and 8).
Accordingly, regardless of the thickness of the polyethylene film, one end of one cut between adjacent upper and lower cuts and the other end of the other cut are not separated in the vertical direction, that is, one end of adjacent cuts It can be considered that the force required for tearing can be made relatively small by setting the distance in the vertical direction of the other end to 0 mm or overlapping adjacent vertical slits in the vertical direction by a predetermined width.

When the width in which adjacent upper and lower cuts overlap in the vertical direction is gradually reduced (Examples 1 to 12, Comparative Examples 3, 4, 7, and 8), the force necessary for tearing tends to be gradually reduced, The force required for tearing the one where the vertical distance between one end and the other end of adjacent upper and lower cuts was 0 mm (Comparative Examples 2 and 6) was the smallest. In addition, in Examples 7 to 9 of a polyethylene film having a thickness of 30 μm, the adjacent upper and lower cuts are overlapped by 2.5 mm in the vertical direction (Example 9), and the force necessary for tearing is overlapped by 1.0 mm. Although it was smaller than (Example 7), the third test result in Example 9 was clearly smaller than the first and second tests, which is considered a test error. In Example 9, exceptionally, when the average value was calculated from the first and second test results without considering the third test result, it was 621 [cN]. It is thought that the result is similar to the case.
On the other hand, the ease of tearing is achieved by gradually reducing the width of the adjacent vertical cuts overlapping in the vertical direction (Examples 2-6, 8-12, Comparative Examples 3, 4, 7, 8). It tends to grow gradually. In particular, when the adjacent upper and lower cuts are overlapped by 5.0 mm in the vertical direction (Examples 6 and 12), the adjacent vertical cuts are overlapped by 6.0 mm in the vertical direction (Comparative Examples 3 and 7) and 7.5 mm overlap. The numerical value of the ease of tearing was clearly increased compared to the combined ones (Comparative Examples 4 and 8).
In the case of a polyethylene film having a thickness of 25 μm, a value obtained by overlapping adjacent upper and lower cuts by 2.0 to 3.0 mm in the vertical direction (Examples 2 to 4) has the largest tearability and has a thickness of 30 μm. In the case of the polyethylene film, the value of tearing ease was the largest when the adjacent upper and lower cuts were overlapped by 2.5 mm in the vertical direction (Example 9).
Then, when the width of overlapping the adjacent upper and lower cuts in the vertical direction is further reduced, in the case of a 25 μm thick polyethylene film, the adjacent vertical cuts are overlapped by 1.0 mm in the vertical direction (Example 1). The distance between one end and the other end of adjacent cuts in the vertical direction is 0 mm (Comparative Example 2), and the adjacent vertical cuts are overlapped by 2.0 mm in the vertical direction (Example 2) Compared to, the tearability is smaller. Further, in the case of a 30 μm thick polyethylene film, adjacent upper and lower cuts are overlapped by 1.0 to 2.0 mm in the vertical direction (Examples 7 and 8), and upper and lower ends of one end and the other end of adjacent cuts. The numerical value of ease of tearing was smaller when the distance in the direction was 0 mm (Comparative Example 6) than when the adjacent upper and lower cuts were overlapped by 2.5 mm in the vertical direction (Example 9).
As a result, in consideration of problems that occur when the vertical distance between one end of one cut and the other end of the other cut between adjacent upper and lower cuts is 0 mm (see Patent Document 2), the polyethylene film Regardless of the thickness of the film, the ratio of overlapping the adjacent upper and lower cuts in the vertical direction should be greater than 0% and 50% or less, preferably 20% or more and 30% or less. It is thought that it can be made small and the ease of tearing can be improved.

<Test of cut formation direction>
The formation direction of several cut | interruption is demonstrated with reference to the following Examples 13-16 and Comparative Examples 9-16.

(Test film)
Film piece for tearability test: Using each polyethylene film having a thickness of 25 μm and 30 μm, the length in one direction parallel to the stretching direction A of each polyethylene film is 10 cm, and the length in a direction orthogonal to the length is 15 cm. A rectangular film piece T2 was prepared and used for the test.
Film piece for tensile strength test: using a polyethylene film having a thickness of 25 μm and a thickness of 30 μm, a rectangular shape in which the length in one direction parallel to the stretching direction A of each polyethylene film is 15 cm and the length in a direction perpendicular to the length is 10 cm A film piece T3 having a shape was prepared and used for the test.
What were tested using a polyethylene film having a thickness of 25 μm were Examples 13 and 14 and Comparative Examples 9 to 12, and those tested using a polyethylene film having a thickness of 30 μm were Examples 15 and 16 and Comparative Example 13. ~ 16.

(Shape of cut)
Length of each cut [mm]: 5
Spacing between adjacent ones in the direction orthogonal to the stretching direction A [mm]: 5
Cut angle: 45 degrees in each of the film pieces T2 and T3, with the direction perpendicular to the stretching direction A of each polyethylene film being 0 degrees and the direction parallel to the stretching direction A being 90 degrees <Examples 13 and 15>, 60 Degrees <Examples 14 and 16>, 0 degrees <Comparative Examples 9 and 13>, 30 degrees <Comparative Examples 10 and 14>, 75 degrees <Comparative Examples 11 and 15>, 90 degrees <Comparative Examples 12 and 16> Formed as follows.
Each film piece T2 for tearability test is formed with a 7.2 cm wide holding piece F2 (see FIG. 6 (a)) held by the lower chuck 202 of the universal tensile compression tester 200. A plurality of cut lines were formed in a straight line as a whole along a direction perpendicular to the stretching direction A of the polyethylene film, continuously from the base end of the piece F2.
In each film piece T3 for the tensile strength test, two lines were formed as a whole at intervals of 7.2 cm so that a plurality of cuts were arranged along the direction orthogonal to the stretching direction A.
In addition, in each film piece T2 for tearability test and each film piece T3 for tensile strength test, the direction of the cut line forming two straight lines is such that the upstream side in the tearing direction is narrow and the downstream side is widened. It has a “C” shape.

(Measurement of force required for tearing)
The test was conducted using a universal tensile / compression tester 200 (model number: TG-200N, number: 1084601, Minebea Co., Ltd .; see FIG. 4). One end of each film piece T2 for tearability test of Examples 13 to 16 and Comparative Examples 9 to 16 is held by the upper chuck 201, and the holding piece F2 is held by the lower chuck 202. Is increased by 50 mm at a speed of 30 mm / min. At this time, the force [cN] required to tear a plurality of upper and lower cuts was measured. The above test was performed three times for each film piece T2.

(Measurement of ease of tearing)
In both hands, one end of each film piece T2 for tearability test of Examples 13 to 16 and Comparative Examples 9 to 16 is held with one hand and the holding piece F2 is held with the other hand. A plurality of upper and lower cuts are torn apart so as to be relatively spaced apart. The sensory evaluation of the ease of tearing at this time is evaluated in five stages, and the larger the value, the easier it is to tear. The five-level evaluation criteria are the same as in the overlap degree test. The above test was performed three times for each film piece T2.

(Measurement of tensile strength)
The test was conducted using a universal tensile / compression tester 200 (model number: TG-200N, number: 1084601, Minebea Co., Ltd .; see FIG. 4). One end of each of the film pieces T3 for tensile strength testing of Examples 13 to 16 and Comparative Examples 9 to 16 is held by the upper chuck 201, and the holding piece F2 is held by the lower chuck 202. Increase by 20 mm at a speed of 30 mm / min. At this time, the force [cN] required to tear a plurality of upper and lower cuts was measured. The above test was performed three times for each film piece T3.

(Measurement of difficulty of tearing)
Hold one end of each film piece T3 for tensile strength test of Examples 13 to 16 and Comparative Examples 9 to 16 with one hand and hold the holding piece F2 with the other hand. A plurality of upper and lower cuts are torn so as to be relatively spaced apart. The sensory evaluation of the difficulty of tearing at this time is evaluated in five stages, and the larger the numerical value, the harder it is torn. Specifically, it was written as “5” when it was very difficult to break, written as “4” when it was a little difficult to break, and written as “3” when it couldn't be said that it was a little hard to break. In this case, it is expressed as “2”, and when it is very easy to break, it is expressed as “1”. The above test was performed three times for each film piece T3.

Tables 3 and 5 show the measurement results of Examples 13 and 14 and Comparative Examples 9 to 12 tested using a polyethylene film having a thickness of 25 μm. Tables 4 and 6 show the measurement results of Examples 15 and 16 and Comparative Examples 13 to 16 tested using a polyethylene film having a thickness of 30 μm.

[Evaluation]
As shown in Tables 3 and 4, when the cut angle is 0 degree (Comparative Examples 9 and 13), the force required for tearing is the smallest, and when the cut angle is gradually increased (Comparative Example 10). 14 and Examples 13 to 16, Comparative Examples 11 and 15), the force necessary for tearing gradually increases, and when the cut angle is 90 degrees (Comparative Examples 12 and 16), the force necessary for tearing is the most. It became bigger.
On the other hand, the ease of tearing is that the angle of the cut is 30 degrees (Comparative Examples 10 and 14) takes the largest value, and the angle of the cut is gradually increased (Examples 13 to 16). Comparative Examples 11, 12, 15, 16), the numerical value of ease of tearing decreased. In particular, when the cut angle was set to 75 degrees (Comparative Examples 11 and 15), the tearing ease value was clearly smaller than that of the cut angle set to 60 degrees (Examples 14 and 16).

As shown in Tables 5 and 6, when the cut angle is 0 degree (Comparative Examples 9 and 13), the tensile strength value is the smallest, and when the cut angle is gradually increased (Comparative Examples 10 and 14). Examples 13 to 16, Comparative Examples 11 and 15), the tensile strength value gradually increased, and when the cut angle was 90 degrees (Comparative Examples 12 and 16), the tensile strength value was the largest. In Comparative Examples 9 and 13, the film pieces were torn before being pulled 20 mm three times, and in Comparative Example 10, the first and third times, and in Comparative Example 14, the third time. The film pieces were torn before they were pulled 20mm each.
Accordingly, when the cut angle is 45 degrees or more (Examples 13 to 16, Comparative Examples 11, 12, 15, and 16), that is, in the case of a polyethylene film having a thickness of 25 μm, the tensile strength value is about 1400 [cN]. In the case of a polyethylene film having a thickness of 30 μm, if the tensile strength value is larger than about 1500 [cN], it is considered that the film is hardly broken even when pulled by 20 mm or more.
Similarly, with respect to the difficulty of tearing, when the angle of the cut is 90 degrees (Comparative Examples 12 and 16), the largest value is obtained, and when the angle of the cut is gradually reduced (Comparative Examples 11 and 15). Examples 13 to 16, Comparative Examples 9, 10, 13, and 14), the numerical value of difficulty of tearing decreased. Here, in the case of a polyethylene film having a thickness of 25 μm, the cut angle of 75 degrees (Comparative Example 11) and the cut angle of 90 degrees (Comparative Example 12) are substantially the same numerical values. It is very difficult to tear, that is, the openability is poor.

As a result, regardless of the thickness of the polyethylene film, when the cut angle is set to 0 degree or 30 degrees (Comparative Examples 9, 10, 13, 14), the film is easily broken and the polyethylene film has a thickness of 25 μm. In the case where the angle of the cut is 75 degrees (Comparative Example 11), considering that the unsealing property deteriorates, the angle of the cut is set to 45 to 60 degrees. It can be reduced, the ease of tearing can be improved, the tensile strength value can be relatively increased, and the difficulty of tearing can be improved.
That is, regardless of the thickness of the polyethylene film, it is considered that when the angle of the cut is 45 to 60 degrees, it is possible to achieve both openability and difficulty of tearing.

As described above, according to the packaging bag 100 of the present embodiment, the portion of the inner side of the perforation 30 is cut open along the left-right direction intersecting with the up-down direction, whereby the roll paper R extending in the left-right direction is removed. The roll which can form the exit 15 and is preserve | saved in the state accommodated in the said packaging bag 100 without being used immediately after opening compared with what is formed so that the extraction opening 15 may open upwards External dust and dust can be made difficult to adhere to the paper R, and the roll paper R can be stored hygienically. In particular, when the perforation 30 is cut open, a take-out port 15 having a length in the left-right direction corresponding to 1.5 roll paper R is formed, so that the take-out port 15 is formed to open upward. In comparison, the size of the opening formed by the take-out port 15 can be reduced, the roll paper R in a state of being accommodated without being used after opening can be properly stored, and the roll paper R Jumping out of the packaging bag 100 can be appropriately prevented.
Further, the perforation 30 is provided with a second curved portion 32 in which a plurality of upper and lower cuts 32a,... Are formed along the vertical direction substantially parallel to the extending direction of the film body F. When the handle portion 20 of the packaging bag 100 is gripped and the bag body portion 10 is pulled in a vertical direction with a predetermined force, compared to other cuts formed along the direction intersecting the stretching direction of the film body F. Thus, the second curved portion 32 can be made difficult to tear.
Thereby, in the packaging bag 100 formed so that the take-out port 15 of the roll paper R extends in the left-right direction, it is possible to maintain the difficulty of tearing when the take-out port 15 is unopened. The width in the left-right direction substantially perpendicular to the up-down direction of the outlet 15 (perforation 30) can be made sufficiently large, and the roll paper R can be easily taken out from the packaging bag 100 individually.

Further, even if the upper and lower cuts 32a have a shape that is difficult to tear compared to other cuts, the adjacent ones in the left and right direction overlap each other in the up and down direction, that is, the adjacent upper and lower cuts 32a and 32a are at least one. Since the two portions are opposed to each other, the one upper and lower cut 32a in the downstream direction in which the perforation 30 is cut open can be cut open so as to be continuous with the other upper and lower cuts 32a. It can be easily opened. That is, the upper and lower cuts 32a and 32a adjacent to each other in the left-right direction are the ends on the upper and lower sides of the upper and lower cuts 32a on the upstream side in the direction in which the perforation 30 is opened, and the ends on the inner side in the vertical direction of the lower and lower cuts 32a. Are overlapped (opposed), so that the line can be torn from the point of the upstream vertical cut 32a toward the downstream vertical cut 32a from the end on the outer side in the vertical direction. It is possible to prevent a significant deviation from the upper and lower cuts 32a. In particular, even if the film flow direction and the perforated direction of the perforation 30 are not the same, the shape can be made relatively easy to open.
Therefore, it is possible to provide a perforation 30 that maintains the difficulty of tearing in an unopened state and is easy to open when opened.

Further, the perforated line 30 is formed with a plurality of oblique cut lines 33a, 34a extending in an up-down direction substantially parallel to the stretching direction of the film body F and an oblique direction intersecting with the left-right direction. Since the upper and lower cuts 32a substantially parallel to the extending direction of the film body F can be easily broken, the perforated line 30 can be easily opened by the upper and lower linear portions 33 and 34. it can.
Further, even in the case of the oblique cuts 33a and 34a having a shape that is easy to tear compared to the upper and lower cuts 32a, the intervals between the plurality of oblique cuts 33a and 34a are substantially equal, and the plurality of the curved portions 32 constituting the second curved portion 32 are formed. When the bag main body 10 is pulled with a predetermined force in the vertical direction, the upper and lower linear portions 33 formed of a plurality of oblique cuts 33a and 34a are formed by making the gap between the upper and lower cuts 32a,. , 34 itself can be made difficult to tear.
Therefore, it is possible to provide a perforation 30 that maintains the difficulty of tearing in an unopened state and is easy to open when opened.

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 embodiment, the outlet 15 has a shape extending in the left-right direction. However, the shape is not limited to this example, and the shape of the outlet 15 can be arbitrarily changed as appropriate. Is possible. That is, the outlet 15 may have any shape as long as the shape extends in a predetermined direction (for example, an oblique direction) intersecting with the vertical direction.
In addition, the perforation 30 composed of the first curved portion 31, the second curved portion 32, and the upper and lower linear portions 33, 34 has been illustrated. However, the configuration of the perforation 30 is an example and is not limited thereto. It can be arbitrarily changed as appropriate. That is, it is not always necessary to provide all of the first curved portion 31, the second curved portion 32, and the upper and lower linear portions 33, 34. The perforation is considered in consideration of easiness of opening the perforation 30 and the like. The configuration of 30 may be changed.

Further, in the above embodiment, a plurality of roll papers R,... (Paper hygiene articles) having substantially the same shape are stacked in the vertical direction on the bag body 10 and aligned in the left-right direction and the front-back direction (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 are not necessarily arranged in a horizontal direction or a front-rear direction (orthogonal direction).
For example, when a plurality of roll papers R are stacked in the vertical direction, the side surface portion 11 of the bag main body portion 10 forms a curved surface extending in the circumferential direction of the roll paper R. You may provide the perforation 30 which forms an outlet in a part.

DESCRIPTION OF SYMBOLS 100 Packaging bag 10 Bag main-body part 11 Side surface part 15 Outlet 30 Perforation 32 2nd curvilinear part 32a Upper and lower cut 33 Upper linear part 33a Oblique cut 34 Lower linear part 34a Oblique cut R Roll paper (made of paper) Sanitary goods)

Claims (5)

A packaging bag comprising a bag body for storing a plurality of paper hygiene articles,
The bag body part is formed by forming a film body, and has a side part extending substantially parallel to the up-down direction, which is the stretching direction of the film body,
The side surface portion is provided with a perforation that forms an outlet of the paper hygiene article extending in a predetermined direction intersecting with the vertical direction by being cut open.
The perforation has a plurality of upper and lower cuts extending in the up and down direction, and the plurality of upper and lower cuts as a whole form a curved portion that is convex in a direction opposite to the direction in which the perforation is cut open. A packaging bag characterized by being disposed.   The packaging bag according to claim 1, wherein among the plurality of upper and lower cuts, adjacent ones are arranged so as to overlap each other in the predetermined direction. The perforation is provided with two upper and lower linear portions extending in the left-right direction, adjacent to the curved portion.
The linear portion, the packaging bag according to claim 2, characterized in that have a plurality of oblique slits extending in an oblique direction crossing the orthogonal direction substantially orthogonal to the vertical direction and the vertical direction. In the bag body, a plurality of the paper hygiene articles having substantially the same shape are stacked in the vertical direction,
The length of the interval between the two upper and lower linear portions is longer than half the vertical direction of the paper hygiene article and not more than the vertical length of the paper hygiene article. The packaging bag according to claim 3 , wherein In the bag body portion, a plurality of the paper hygiene articles having substantially the same shape are housed side by side in an orthogonal direction substantially orthogonal to the vertical direction,
The side portion has a planar shape extending substantially parallel to the vertical direction and the orthogonal direction,
The length of the linear portion is longer than the length of the perpendicular direction of the paper-made sanitary articles, and, to claim 3 or 4, characterized in that it is less than the length of the perpendicular direction of the side portions The packaging bag described.

Images