JP3185481U - Packaging bag - Google Patents

Abstract

Provided is a packaging bag that can be easily opened by preventing the packaging bag from contacting the contents during opening.
A packaging bag 1 includes gusset portions 2a and 2b each including a first mountain fold portion 6a and a second mountain fold portion 6b in which valley fold portions 5c and 6c are formed between the first mountain fold portion and the first mountain fold portion. The packaging bag 1 is provided at both ends in the first direction along a second direction substantially orthogonal to the first direction, and is on the top side of the first mountain folded portion 6a in the gusset portion 2a on one side in the first direction. A first seal portion 3a is provided at the end of the first seal portion along the second direction, and a first notch portion 4a is formed on the end portion of the first seal portion in the second direction.
[Selection] Figure 1

Description

  The present invention relates to a packaging bag.

  In general, a packaging bag having a gusset portion in which both ends in the width direction are folded into a V shape is known (for example, Patent Document 1). Since such a packaging bag can enlarge the thickness of the accommodating part of a packaging bag by expanding a gusset part, it is suitable for packaging the contents with thickness.

JP 2011-251729 A

  In the packaging bag as described above, the end portion in the extending direction of the gusset portion is sealed along a direction orthogonal to the extending direction of the gusset portion, and for example, a notch is provided in the sealed portion (seal portion). It has been. When opening a packaging bag provided with such a notch, both sides sandwiching the notch are picked and pulled in a direction substantially perpendicular to the surface of the packaging bag and away from each other. Thereby, the packaging bag is torn and opened.

  At this time, if the packaging bag is torn using the notch provided in the seal portion in the gusset portion, the packaging bag cannot be sufficiently opened. Therefore, the packaging bag is opened using a seal portion formed in a portion other than the gusset portion, that is, a notch formed near the center in the extending direction of the seal portion. However, when opening by tearing the vicinity of the center of the packaging bag, the packaging bag may come into contact with the contents during the opening process, and it may be difficult to open the packaging bag.

  One aspect of the present invention has been made in view of the above-mentioned problems of the prior art, and provides a packaging bag that can be easily opened by preventing the packaging bag from contacting the contents at the time of opening. Is one of the purposes.

  A packaging bag according to one aspect of the present invention includes a gusset portion including a first mountain fold portion and a second mountain fold portion in which a valley fold portion is formed between the first mountain fold portion and both ends in the first direction. And a packaging bag provided along a second direction substantially orthogonal to the first direction, at an end of the top portion of the first mountain fold in the gusset portion on one side of the first direction, A first seal portion is provided along the second direction, and a first notch portion is formed on an end portion side of the first seal portion in the second direction.

  According to this configuration, the gusset portion is formed by picking both sides of the first notch portion formed in the first seal portion of the first mountain fold portion and pulling it in a direction perpendicular to the surface of the packaging bag so as to be separated from each other. The packaging bag can be cut in a first direction orthogonal to the extending direction. And since the 1st notch part is formed in the edge part side of a 2nd direction, a packaging bag can be opened by tearing the edge part side of the 2nd direction of a packaging bag. Therefore, when opening a packaging bag, it can suppress that a packaging bag contacts the contents, and can open a packaging bag easily.

The first seal portion may be formed by bonding both end portions of one sheet material.
In general, such a packaging bag is manufactured by sticking both end portions of one sheet material into a cylindrical shape and sealing each opening. At this time, the part where both ends of the sheet material are bonded together is formed so as to be located at the center of the back surface of the packaging bag, and becomes a back tension part. In the case of a packaging bag with a back tension part, the back tension part prevents the packaging bag from being torn when the packaging bag is torn in a direction that intersects the direction in which the back tension part extends (the direction in which the gusset part extends). Is done.

  On the other hand, according to this structure, since the part by which the both ends of the sheet material were bonded together is made into the 1st seal part, the packaging bag without a backrest part is obtained. Therefore, when the packaging bag is torn in the first direction, the backpack does not prevent the packaging bag from being torn. As a result, the packaging bag can be easily opened.

A second seal portion is provided along the second direction at an end portion on the top side of the second mountain fold portion in the gusset portion on one side of the first direction, and the second direction of the second seal portion. A second cutout portion may be formed on the end portion side so as to face the first cutout portion.
According to this structure, the 1st mountain fold part and the 2nd mountain fold part are match | combined, and a packaging bag is torn using the 1st notch part and 2nd notch part which overlapped, By the 1st mountain fold part and the 2nd mountain fold part, The packaging bag can be torn from both. Therefore, the packaging bag can be opened more easily.

The first mountain fold portion and the second mountain fold portion in the gusset portion on the other side in the first direction are non-seal portions.
According to this structure, the mountain fold part in the gusset part of the other side of a 1st direction is a non-seal part in which the seal part is not provided. Therefore, when the packaging bag is torn from the gusset portion on one side in the first direction toward the gusset portion on the other side in the first direction, the packaging bag is packaged by the seal portion at the end portion on the other side in the first direction. The opening of the bag is not suppressed. As a result, the packaging bag can be easily opened.

  According to the packaging bag of one aspect of the present invention, it is possible to provide a packaging bag that can be easily opened by preventing the packaging bag from contacting the contents at the time of opening.

It is a top view which shows the packaging bag of this embodiment. It is the elements on larger scale which show the packaging bag of this embodiment. It is a top view which shows the state in which the contents were accommodated in the packaging bag of this embodiment. It is a figure which shows the packaging bag of this embodiment, Comprising: It is AA sectional drawing in FIG. It is a top view which shows the state which opened the packaging bag of this embodiment. It is a top view which shows the conventional packaging bag. It is a top view which shows an example of the state which opened the conventional packaging bag.

Hereinafter, a packaging bag according to an embodiment of the present invention will be described with reference to the drawings.
The scope of the present invention is not limited to the following embodiment, and can be arbitrarily changed within the scope of the technical idea of the present invention. Moreover, in the following drawings, in order to make each structure easy to understand, the actual structure may be different from the scale, number, or the like in each structure.

FIG. 1 is a plan view showing a packaging bag 1 of the present embodiment. FIG. 2 is a partially enlarged view showing the packaging bag 1 of the present embodiment.
As shown in FIG. 1, the packaging bag 1 according to the present embodiment is a bag body in which a housing portion 100 is provided between a first surface portion 10 and a second surface portion 11. The packaging bag 1 is bonded together by sealing both ends of a single film-like rectangular laminate (sheet material) in which a base material layer and a heat-adhesive resin layer are laminated, and the height direction (first It is a cylindrical shape that opens in one direction, the vertical direction in FIG. 1, and both end portions in the height direction are sealed by seal portions 12 that extend along the width direction (second direction, left-right direction in FIG. 1). Is formed. At this time, the packaging bag 1 is formed so that the portions where both end portions of the rectangular laminated body are sealed become first seal portions 3a described later.

The packaging bag 1 includes a first gusset portion (one side gusset portion) 2a and a second gusset portion (the other side gusset portion) 2b.
The first gusset portion 2 a is provided at the end portion on the left side (one side) in the width direction of the packaging bag 1. The first gusset portion 2 a is formed by folding the widthwise left end of the first surface portion 10 and the widthwise left end of the second surface portion 11. The first gusset portion 2a includes a first mountain fold 5a, a second mountain fold 5b, and a valley fold 5c formed between the first mountain fold 5a and the second mountain fold 5b.

  The 1st mountain fold part 5a is provided in the 1st surface part 10 side. In other words, the first mountain fold 5a is formed by folding the left end of the first surface 10 in the width direction. A first seal portion 3a is provided along the height direction at the end of the first mountain folded portion 5a on the left side (top side) in the width direction. The 1st seal | sticker part 3a is a part by which the both ends of the rectangular laminated body mentioned above were sealed by heat welding, for example.

  A first notch portion (first notch portion) 4a that opens to the left in the width direction is formed on the upper end side in the height direction of the first seal portion 3a. The 1st notch part 4a is formed in the downward side rather than the seal part 12 provided in the height direction upper side. The first notch portion 4a is a notch having a triangular shape in plan view. In addition, the planar view shape of the 1st notch part 4a is not specifically limited in the range which can open the packaging bag 1. FIG.

  The 2nd mountain fold part 5b is provided in the 2nd surface part 11 side. In other words, the second mountain fold 5b is formed by folding the left end of the second surface 11 in the width direction. A second seal portion 3b is formed along the height direction at the end of the second mountain folded portion 5b on the left side (top side) in the width direction. As shown in FIG. 2, a second notch portion (second notch portion) that opens to the left in the width direction at a position facing the first notch portion 4 a is provided on the upper end side of the second seal portion 3 b in the height direction. Part) 4b is formed. The shape of the second notch portion 4b is the same as that of the first notch portion 4a.

  As shown in FIG. 1, the second gusset portion 2 b is formed by folding an end portion on the right side (the other side) in the width direction of the first surface portion 10 and an end portion on the right side in the width direction of the second surface portion 11. And a first mountain fold 6a, a second mountain fold 6b, and a valley fold 6c formed between the first mountain fold 6a and the second mountain fold 6b.

The 1st mountain fold part 6a is provided in the 1st surface part 10 side. In other words, the first mountain fold 6a is formed by folding the right end of the first surface 10 in the width direction.
The 2nd mountain fold part 6b is provided in the 2nd surface part 11 side. In other words, the second mountain fold 6b is formed by folding the right end of the second surface 11 in the width direction.
Unlike the 1st mountain fold part 5a and the 2nd mountain fold part 5b of the 1st gusset part 2a, the 1st mountain fold part 6a and the 2nd mountain fold part 6b are non-seal parts in which the seal part is not provided.

  FIG. 3 is a plan view showing a state in which the contents 20 are accommodated in the accommodating portion 100 of the packaging bag 1 of the present embodiment. FIG. 4 is a diagram illustrating a state in which the contents 20 are accommodated in the accommodating portion 100 of the packaging bag 1 of the present embodiment, and is a cross-sectional view taken along line AA in FIG. 3.

  As shown in FIG. 3 and FIG. 4, the first mountain folds 5 a, 6 a, the second mountain folds 5 b, 6 b, and the valley folds 5 c, 6 c that have been folded are expanded according to the thickness of the contents 20. The contents 20 are accommodated in the accommodating portion 100.

Next, the opening procedure of the packaging bag 1 of this embodiment is demonstrated.
FIG. 5 is a view showing a state where the packaging bag 1 of the present embodiment is opened.
First, the 1st mountain fold part 5a and the 2nd mountain fold part 5b of the 1st gusset part 2a are made to contact. At this time, since the first notch portion 4a formed in the first mountain fold portion 5a and the second notch portion 4b formed in the second mountain fold portion 5b are formed to face each other, they are overlapped in plan view. It will be in the state.

  Next, the first notch portion 4a and the second notch portion 4b that are overlapped are picked at both sides in the height direction together with the first mountain fold portion 5a and the second mountain fold portion 5b so that the picked portions are separated from each other. Then, the first surface portion 10 and the second surface portion 11 are pulled in a direction substantially orthogonal to the first surface portion 10 and the second surface portion 11. Thereby, the 1st surface part 10 and the 2nd surface part 11 are each torn from the 1st notch part 4a and the 2nd notch part 4b toward the width direction right side. And if the 2nd gusset part 2b provided in the edge part of the width direction right side is torn, the edge part of the height direction upper side of the packaging bag 1 will be isolate | separated, and the packaging bag 1 will be opened (refer FIG. 5). .

  As shown in FIG. 5, the opened packaging bag 1 is torn along the width direction at the height position where the first notch portion 4 a and the second notch portion 4 b are formed, and ends at the upper side in the height direction. The parts are separated. As a result, the opening 30 is formed, and the accommodation unit 100 communicates with the opening 30. As a result, the contents 20 accommodated in the accommodation unit 100 can be taken out from the opening 30.

  According to this embodiment, since it can suppress that the packaging bag 1 contacts the contents 20 at the time of opening, the packaging bag which is easy to open is obtained. Details will be described below.

First, the problem at the time of opening the conventional packaging bag is demonstrated.
FIG. 6 is a plan view showing a conventional packaging bag 40.
The packaging bag 40 is a bag body in which a housing portion is formed between the first surface portion 60 and the second surface portion 61. The packaging bag 40 is formed by sealing a rectangular laminated body like the packaging bag 1 of this embodiment.

  The packaging bag 40 includes a first gusset portion 50a, a second gusset portion 50b, and a backrest portion 42. Here, in the conventional packaging bag 40, the portion where the both ends of the rectangular laminated body are sealed is the backrest portion 42. The backrest part 42 is provided on the second surface part 61 side. A notch 41 is formed at the upper end of the packaging bag 40 in the height direction. The position in the width direction where the notch portion 41 is formed is between the first gusset portion 50a and the second gusset portion 50b, in other words, near the center in the width direction. This is because when the notch portion 41 is formed in the first gusset portion 50a or the second gusset portion 50b, the tops of the mountain fold portions of the first gusset portion 50a and the second gusset portion 50b are separated. This is because a sufficient opening cannot be obtained.

  When opening the packaging bag 40, both sides of the notch portion 41 are picked, and the picked portions are pulled apart in a direction perpendicular to the first surface portion 60 and the second surface portion 61. Thereby, the first surface portion 60 and the second surface portion 61 are torn from the notch portion 41 toward the lower side in the height direction.

  Here, since the notch part 41 is formed in the center vicinity of the width direction, if the 1st surface part 60 and the 2nd surface part 61 are torn up to the position in which the content 20 is accommodated, the packaging bag 40 will be a content. In some cases, the object 20 may come into contact. In such a case, the direction in which the first surface portion 60 and the second surface portion 61 are torn is bent, and the end portion on the lower side in the height direction is not torn, and there is a possibility that a sufficient opening cannot be obtained.

  FIG. 7 is a diagram illustrating an example of a state in which a sufficiently large opening cannot be obtained when the conventional packaging bag 40 is opened. FIG. 7 shows a case where the packaging bag 40 is in contact with the contents 20 and the direction to be cut is warped in the width direction. In such a case, as shown in FIG. 7, the size of the opening 70 formed by separating a part of the packaging bag 40 is sufficient with respect to the size of the contents 20. In other words, the contents 20 may be difficult to take out.

  For the above problem, according to the packaging bag 1 of the present embodiment, the first notch portion 4a and the second notch portion 4b are formed at the left end of the first gusset portion 2a in the width direction, It is configured to open by tearing. Therefore, the 1st notch part 4a and the 2nd notch part 4b can be formed in the edge part of the height direction upper side, and when cutting and opening, it can suppress that the packaging bag 1 contacts the contents 20 . Therefore, a packaging bag that can be easily opened is obtained.

  Moreover, in the conventional packaging bag 40, since the back tension part 42 is provided along the height direction, when the packaging bag 40 is to be cut in the width direction, the second surface part 61 is cut by the back tension part 42. It is suppressed and is difficult to open.

  On the other hand, according to this embodiment, the part which the both ends of the rectangular laminated body were sealed and bonded is the 1st seal | sticker part 3a. Therefore, there is no back tension part and it is easy to tear the packaging bag 1 in the width direction.

  Further, when the packaging bag is torn and opened in the width direction, if the gusset portions at both ends are provided with seal portions, the packaging bag is torn in the width direction from one gusset portion to the other gusset portion. At that time, the tearing of the packaging bag is suppressed by the seal portion of the other gusset portion, and it may be difficult to open the packaging bag.

  On the other hand, according to the present embodiment, the first seal portion 3a and the second seal portion 3b are formed in the first fold portion 5a and the second fold portion 5b of the first gusset portion 2a, respectively. On the other hand, the seal | sticker part is not formed in the 1st mountain fold part 6a and the 2nd mountain fold part 6b of the 2nd gusset part 2b. Therefore, it is easy to open the packaging bag by tearing it in the width direction.

  Further, according to the present embodiment, both the first mountain fold portion 5a and the second mountain fold portion 5b in the first gusset portion 2a are provided with a seal portion (first seal portion 3a, second seal portion 3b) and a notch portion (first A notch portion 4a and a second notch portion 4b) are provided. Therefore, the packaging bag can be opened more easily by overlapping and tearing the first notch portion 4a and the second notch portion 4b.

  In the present embodiment, the following configuration can also be adopted.

  The first notch portion 4a and the second notch portion 4b may be provided on the end portion side on the lower side in the height direction, and the end portion side on the upper side in the height direction and the end portion side on the lower side in the height direction. It may be provided in both.

  The second seal portion 3b and the second notch portion 4b provided in the second mountain fold portion 5b are not necessarily provided.

  DESCRIPTION OF SYMBOLS 1 ... Packaging bag, 2a ... 1st gusset part (one side gusset part), 2b ... 2nd gusset part (other side gusset part), 3a ... 1st seal part, 3b ... 2nd seal part, 4a ... 1st 1 notch part (first notch part), 4b... 2nd notch part (second notch part), 5a, 6a ... 1st mountain fold part, 5b, 6b ... 2nd mountain fold part, 5c, 6c ... valley fold part

Claims (4)

A gusset portion comprising a first mountain fold portion and a second mountain fold portion in which a valley fold portion is formed between the first mountain fold portion and the first mountain fold portion is substantially orthogonal to the first direction at both ends in the first direction. A packaging bag provided along two directions,
A first seal portion is provided along the second direction at an end portion on the top side of the first mountain fold portion in the gusset portion on one side in the first direction,
A packaging bag, wherein a first cutout portion is formed on an end portion side of the first seal portion in the second direction.   The packaging bag according to claim 1, wherein the first seal portion is formed by bonding both end portions of one sheet material. A second seal portion is provided along the second direction at an end portion on the top side of the second mountain fold portion in the gusset portion on one side of the first direction,
The packaging bag according to claim 1 or 2, wherein a second cutout portion is formed on an end portion side of the second seal portion in the second direction so as to face the first cutout portion.   The packaging bag according to any one of claims 1 to 3, wherein the first mountain fold portion and the second mountain fold portion in the gusset portion on the other side in the first direction are non-seal portions.

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