WO2012165180A1

WO2012165180A1 - Packaging bag and method of manufacturing packaging bag

Info

Publication number: WO2012165180A1
Application number: PCT/JP2012/062839
Authority: WO
Inventors: 昌平山田
Original assignee: 大塚製薬株式会社
Priority date: 2011-05-27
Filing date: 2012-05-18
Publication date: 2012-12-06
Also published as: CN103608267A; US20140086514A1; EP2716568B1; TW201311518A; JP6069196B2; JPWO2012165180A1; KR20140025399A; CN103608267B; CA2834764A1; SG194844A1; EP2716568A4; EP2716568A1

Abstract

This packaging bag is provided with a cut for serving as an opening starting point, and an easy cut portion disposed on an extension line of the cut in a direction of opening, such that the easy cut portion is disposed to extend from a point on one side of a back seal portion to a point on the other side of the back seal portion, and each end of the easy cut portion is disposed to be apart from a side end portion of a bag main body.

Description

Packaging bag and method for manufacturing packaging bag

The present invention relates to a packaging bag in which various contents such as pharmaceuticals and foods are packaged with a film, and a method for manufacturing the packaging bag.

Known packaging bags include a packaging bag in which the contents are pillow-wrapped with a laminated film obtained by laminating several kinds of plastic films. Such a packaging bag is preferable because it is easy to handle and can reduce waste.

The laminated film constituting the packaging bag has various functions such as strength, tensile strength, gas barrier, moisture permeability, and perfume for each layer of film. And the packaging bag has laminated | stacked the plastic film which has a function suitable for the kind of content.

However, since the packaging bag made of a plastic film is excellent in strength and tensile strength, the user cannot cut the end portion of the packaging bag by hand, and has used scissors and a cutter knife. In addition, when the user cuts with scissors or the like and opens the cut, the cut portion may not be linear, and the contents may jump out of the packaging bag.

Furthermore, the pillow type packaging bag has a thick heat seal part (back seal part) on the back. Therefore, this back seal part deteriorates the openability of the packaging bag. And this unsealing problem becomes more conspicuous for users with weak forces such as patients and children.

For example, as a known technique with improved openability, there is a technique according to Patent Document 1 below. This technique improves the unsealing property by forming an easy-to-open part (rough surface consisting of fine irregularities) as a starting point of opening in the packaging bag. Furthermore, in this technique, in order to prevent the packaging bag from being accidentally opened due to an infant's mischief or the like (to make it difficult to open), the easy-to-open portion does not cover the outer peripheral edge of the packaging bag and is located on the inner side of the outer peripheral edge. Partially formed.

As described above, since the easy-to-open portion is formed on the inner side, it cannot be cut even if the user tries to cut the outer periphery. On the other hand, since the user can draw the film, the easy-to-open portion can move to the outer peripheral edge of the packaging bag. In this state, the user can open the packaging bag using the easy-to-open portion as a starting point for opening. However, in the technique according to Patent Document 1, when the user opens the work, the work of dragging the film is required, so that the work of opening is very complicated.

Japanese Patent No. 3971910

Therefore, a packaging bag E having an easy-to-open portion 32 formed along the side end portion 31 of the bag body 30 as shown in FIG. 8 can be considered so as to simplify the opening operation. However, when the packaging bag E shown in FIG. 8 falls, there is a possibility that the easy-to-open portion 32 of the packaging bag E may be broken due to an impact caused by the dropping.

For example, in a packaging bag in which the periphery of the packaging bag is heat-sealed, such as a four-sided seal, this breakage is unlikely to occur, but in a pillow-type packaging bag having a soft side end that is not heat-sealed, this It is easy to break the bag. In particular, in the case of a packaging bag having a wide width and heavy contents (for example, a packaging bag having a width of 70 mm and a weight of 50 g), the bag breaks in the vicinity of the side end portion of the packaging bag due to a drop impact. There is a risk of doing.

Therefore, an experiment was conducted to drop the packaging bag E shown in FIG. Then, the portion of the easy-to-open portion 32 that is slightly above the dropping surface G is deformed so as to be recessed in a square shape due to the impact of dropping. And since the impact of the fall was concentrated on the part deformed so as to be recessed in this square shape, a hole (pinhole) 33 was formed in this part. Thus, the packaging bag E shown in FIG. 8 cannot solve the problem of suppressing the formation of holes when dropped.

In addition, when the user grasps the packaging bag E shown in FIG. 8 with his / her hand, it is deformed so as to be recessed in a square shape near the side end portion. And a hole may be formed when the force to grip concentrates on the part deform | transformed so that it may dent in square shape. As described above, the packaging bag E shown in FIG. 8 cannot solve the problem of suppressing the formation of the hole 33 when it is grasped by the user.

Further, the easy-to-open portion 32 is partially formed in the width direction in the packaging bag E shown in FIG. Thereby, when a user opens wide packaging bag E, there exists a possibility that it cannot open cleanly from one side edge part to the other side edge part. That is, there is a possibility that the cutting stops midway. And when cutting | disconnection stops on the way, when a user transfers the contents of the packaging bag E to another container, the problem that it takes an effort will arise. Such a problem also occurs in the packaging bag according to Patent Document 1.

Also, a pillow-type packaging bag made of a soft plastic film is preferable because it is easy to handle and can reduce dust. However, since the strength and tensile strength of the film are large, the user cannot easily open the packaging bag by hand.

Therefore, it is conceivable that the side edge of the outer plastic film is scratched so that the user can easily open the packaging bag by hand. However, since the strength of the film is reduced at the scratched portion, there is a possibility that a hole is formed in the packaging bag due to an impact such as dropping. In particular, in the case of a packaging bag having a heavy content and a wide width, the packaging bag is easily broken by an impact such as dropping.

Therefore, the object of the present invention is to have two contradictory functions that an opening is easy when a user manually opens, and on the contrary, when an unintended external force is applied, it is difficult to form an unnecessary hole. And a method for manufacturing the packaging bag.

The packaging bag according to the present invention includes a bag main body that contains the contents, and the bag main body is formed by sealing the film in the length direction and is disposed on the back surface, and the film in the width direction. A pair of end seal portions formed and sealed at the end in the length direction, an edge seal portion formed by sealing the film and disposed at one side end, and A notch for opening start point formed in the edge seal part, and an easy cut part arranged on an extension line of the notch in the opening direction, the easy cut part from one side of the back seal part It arrange | positions over the other side rather than the said back seal part, and each edge part of the said easy cut part is spaced apart and arrange | positioned from the side edge part of the said bag main body.

Further, in the packaging bag according to the present invention, each end of the easy-cut portion may be arranged 10 to 25 mm apart from the side end of the bag body.

Further, in the packaging bag according to the present invention, each end of the easy-cut portion may be arranged 10 to 15 mm apart from the side end of the bag body.

In the packaging bag according to the present invention, each end of the easy-cut portion may be arranged at a distance of 14 to 36% of the width of the bag body from the side end of the bag body. Good.

In the packaging bag according to the present invention, each end of the easy-cut portion may be arranged at a distance of 14 to 21% of the width of the bag body from the side end of the bag body. Good.

Moreover, in the packaging bag which concerns on this invention, while the said back seal part is formed by sealing the both-sides edge part of the said film in a length direction, the front-end | tip part of the said back seal part is the other side of the said bag main body. It may be bent at the base end portion of the back seal portion so as to face.

In the packaging bag according to the present invention, the edge seal portion is disposed along the length direction of the bag body from one end seal portion, and in the width direction of the bag body, You may arrange | position so that an easy cut part may overlap.

Further, in the packaging bag according to the present invention, the easy cut portion may be formed in a rectangular shape, and the cut may be disposed at a central portion of the easy cut portion in the length direction of the bag body.

Moreover, the manufacturing method of the packaging bag according to the present invention is the manufacturing method of the packaging bag, wherein both the side edges of the film are sealed in the length direction in order to make the belt-like film cylindrical. Forming the back seal portion and sealing the film in the width direction to form a pair of the end seal portions in order to make the tubular film into a bag shape. Comprises the easy-cut portions at both end portions so that the easy-cut portions are arranged from one side of the back seal portion to the other side of the back seal portion.

FIG. 1 shows an overall front view of a packaging bag according to a first embodiment of the present invention. FIG. 2 shows an overall rear view of the packaging bag according to the embodiment. FIG. 3: shows the principal part perspective view of the packaging bag which concerns on the same embodiment. FIG. 4 shows a development view of the packaging bag according to the embodiment. FIG. 5 shows an overall rear view of the packaging bag according to the second embodiment. FIG. 6 is an overall rear view of the packaging bag according to the comparative example. FIG. 7 shows an overall rear view of a packaging bag according to another comparative example. FIG. 8 is a diagram showing a state in which the packaging bag is dropped, and shows an overall front view of the packaging bag.

Hereinafter, a packaging bag according to an embodiment of the present invention will be described with reference to FIGS. In the following description, the upper side, lower side, left side, and right side of FIG. 1 are the upper side, lower side, left side, and right side of the packaging bag A, respectively, and the upper side and lower side of FIGS. The upper side and the lower side of the packaging bags A and B, respectively, and the left and right sides in FIGS. 2, 4 and 5 are the right and left sides of the packaging bags A and B, respectively.

<First Embodiment>
First, the packaging bag according to the first embodiment will be described with reference to FIGS. As shown in FIGS. 1 and 2, the packaging bag A includes a content X and a bag body 1 that houses the content X. In the present embodiment, the content X is a powdered medicine, but is not limited to this. For example, a liquid medicine, a granular medicine, or a food product that is a solid solid (such as individually packaged candy) ) Moreover, in this embodiment, the bag main body 1 is made into the flat pillow type packaging body of a rectangular shape in front view.

The bag body 1 is formed from a laminated film F. This laminated film F is charged on one surface of a film made of polyethylene terephthalate (PET), a polymer resin (SPE) as a binder, an aluminum foil for imparting gas barrier properties, a polymer resin as a binder, and charging. In order to prevent, linear low density polyethylene (LLDPE) is sequentially laminated.

The bag body 1 includes a back seal portion 2 disposed on the back surface and a pair of

end seal portions

3 and 4 disposed at end portions in the length direction. Specifically, the bag body 1 has a back seal portion 2 formed by heat-sealing (center seal) the side edges of the strip-shaped film F along the length direction so as to wrap the contents X, The upper end seal part 3 formed by sealing the upper end part of the film F in the width direction and the lower end seal part 4 formed by sealing the lower end part of the film F in the width direction are provided.

The bag body 1 includes an easy-cut portion 5 that is formed to be more fragile than the surroundings so as to be easily cut. The bag body 1 includes an edge seal portion 7 disposed at the left end portion (one side end portion) 1 a and an opening 8 cut-out 8 formed in the edge seal portion 7. The surface opposite to the back surface of the bag body 1 is referred to as the front surface of the bag body 1.

The back seal portion 2 is formed in a belt shape and is disposed at a substantially central portion in the width direction on the back surface of the bag body 1. The back seal portion 2 is bent at the base end portion 2b so that the tip end portion 2a faces the right side (the other side). The upper end seal portion 3 is formed in a belt shape and is disposed at an upper end portion that is a short side portion of the bag body 1. The lower end seal portion 4 is formed in a belt shape and is disposed at the lower end that is the short side portion of the bag body 1.

A pair of easy cut portions 5 are provided, and are arranged on the front surface of the bag body 1 and the back surface of the bag body 1, respectively. The easy cut portion 5 is formed in a rectangular shape. Specifically, the easy cut part 5 is formed in a strip shape. Each end portion 5a of the easy-cut portion 5 is disposed away from the

side end portions

1a and 1b.

Easy cut part 5 is arranged on an extension line of cut 8 in the opening direction. The easy cut portion 5 is arranged along the upper end seal portion 3 of the bag body 1. One end (left end) 5a of the back-side easy-cut portion 5 is disposed at one position (left side) with respect to the back seal portion 2 and the other end (right end) of the back-side easy-cut portion 5. Part) 5a is arranged at a position on the other side (right side) of the back seal part 2.

Thus, the easy-to-cut part 5 on the back side is continuously arranged from the left part of the back seal part 2 to the right part of the back seal part 2. In other words, the back side easy-cut part 5 is disposed so as to straddle the back seal part 2.

If the vertical dimension “a” of the easy-cut portion 5 is small, the cut portion may come off from the easy-cut portion 5 when the user opens the bag body 1. On the contrary, if the vertical dimension a of the easy-cut portion 5 is large, the bag body 1 may break. As a result, the longitudinal dimension a of the easy-cut portion 5 is set to 3 to 30 mm, preferably 3 to 10 mm, and more preferably 4 to 7 mm.

If the distances d and e between the

side end portions

1a and 1b of the bag body 1 and the end portion 5a of the easy-cut portion 5 are small, the bag body 1 may break. On the other hand, when the distances d and e are large, when the user opens the bag body 1, the cutting direction becomes oblique, so that the cutting is detached from the easy-cut portion 5, and the cutting stops halfway. There is a risk that.

Thereby, the distances d and e are set to 10 to 25 mm, preferably set to 10 to 15 mm, and more preferably set to 13 to 15 mm. In other words, the distances d and e are set to 14 to 36% of the width dimension of the bag body 1, preferably set to 14 to 21%, and more preferably set to 19 to 21%.

In this embodiment, the length dimension of the bag body 1 is 173 mm, the width dimension of the bag body 1 is 70 mm, the vertical dimension (length dimension) a of the easy cut part 5 is 5 mm, and the easy cut part 5 The lateral dimension (width dimension) b of the bag body 1 is 42 mm, the distance c between the upper end of the bag body 1 and the upper end of the easy-cut portion 5 is 20 mm, and one side end (left end) 1a of the bag body 1 is The distance d between one end (left end) 5a of the easy cut portion 5 is 13 mm, the other side end (right end) 1b of the bag body 1 and the other end (right end) of the easy cut portion 5 Part) The distance e from 5a is 15 mm.

In the present embodiment, the easy-cut portion 5 includes a plurality of linear scratches (cuts) arranged along the width direction. In addition, the process given to the easy cut part 5 should just be a process which can open the area | region of the easy cut part 5 easily, and the kind of the process is not specifically limited. For example, the processing may be scratch processing that physically applies force by contacting the film F, non-contact (for example, laser) scratch processing, or processing that forms non-perforated perforations or recesses.

In this embodiment, the scratch of the easy-cut portion 5 is non-penetrating, that is, penetrates only the PET layer which is the surface layer (the most front layer) of the film F. In addition, the process given to the easy cut part 5 should just be a process which an aluminum layer (layer which consists of aluminum foil) does not penetrate. That is, the process applied to the easy-cut part 5 should just be a process which an aluminum layer and a layer on the back side do not penetrate.

The edge seal part 7 is arranged on the upper part of the left end part 1a of the bag body 1 so as to be along the left end part 1a. Specifically, the edge seal portion 7 is disposed along the length direction of the bag body 1 from the upper end seal portion 3.

The edge seal portion 7 is disposed so as to overlap the easy cut portion 5 in the width direction of the bag body 1. Specifically, the upper end portion of the edge seal portion 7 is disposed above the upper end portion of the easy cut portion 5, and the lower end portion of the edge seal portion 7 is the lower end of the easy cut portion 5. It is arrange | positioned below the part. The edge seal portion 7 is formed by sealing the film F.

The cut 8 is arranged at the center of the easy-cut portion 5 in the length direction of the bag body 1. The cut 8 is formed in the edge seal portion 7 from the left end 1a of the bag body 1 toward the inside. Thereby, as shown in FIG. 3, the folding direction of the back seal portion 2 of the heat sealed bag body 1 (the direction from the base end portion 2 b to the tip end portion 2 a of the back seal portion 2) and the cutting direction of the notch 8. Are coincident in the opening direction.

By the way, in this embodiment, since the content X is a powder form, the content X is accommodated in the bag main body 1 about 50% of the quantity which can be accommodated in the bag main body 1 inside. . This is when the powdered contents X are filled, soaring. Thereby, when many contents X are accommodated in the bag body 1, the contents X may be caught between the upper end seal portion 3 and the lower end seal portion 4. If the contents X are individually packaged candy or the like, the contents X are accommodated in the bag body 1 in an amount of about 70 to 80% of the amount that can be accommodated in the bag body 1. .

Next, a method for manufacturing the packaging bag A according to this embodiment will be described.

First, the back surfaces of both side edge portions of the laminated film F are put together, and the portions are heat-sealed in the length direction. Thereby, the back seal | sticker part 2 is formed in the center part of the width direction of the bag main body 1, and the strip | belt-shaped film F is formed in a cylinder. Next, the lower end seal portion 4 is formed by heat-sealing one end of the cylindrical body in the width direction.

Then, after the contents X are accommodated in the film F, the other end is heat-sealed in the width direction, whereby the upper end seal portion 3 is formed. Thus, the packaging bag A is manufactured. The packaging bag A seals both side edges of a long strip-shaped film (raw fabric) F continuously in the length direction, and seals the width direction of the film F at predetermined intervals in the length direction. It may be manufactured continuously by cutting.

Further, before the packaging bag A is formed, it is preferable to form the easy-cut portion 5 on the film F having a uniform thickness (the back seal portion 2 is not formed). And as shown in FIG. 4, the easy cut part 5 is formed in the strip | belt shape center part of the width direction of the film F so that it may be arrange | positioned in the front surface of the bag main body 1. As shown in FIG. The easy-to-cut portions 5 are arranged on both side end portions (both end portions in the width direction) of the film F so as to be arranged on the back surface of the bag body 1 from one side of the back seal portion 2 to the other side of the back seal portion 2. ) In a band shape along the width direction.

Next, a first function of the packaging bag A according to the present embodiment, that is, a function that is easy to open when the user manually opens the package will be described.

One area to be divided (the upper corner of the bag body 1) is held by one hand of the user, and the other area (the left side end 1a near the notch 8) is the other hand of the user. To be gripped. And the upper end corner | angular part of the bag main body 1 is pulled toward the other end side by the user. Then, cutting starts from the right end portion of the cut 8 and the cut portion reaches the left end portion of the easy-cut portion 5.

After that, cutting proceeds along the easy-cut portion 5, and the cut portion reaches the right end portion of the easy-cut portion 5. Finally, the cut portion reaches the right end 1b of the bag body 1. In this way, even a user with weak force can easily open the bag body 1 from the left end 1a to the right end 1b.

Further, the bag body 1 is separated into a lower side (most of the bag body 1) of the easy-cut portion 5 and an upper side (band-shaped piece) of the easy-cut portion 5. And the site | part (part shown with a dashed line in FIG. 1) cut | disconnected by the substantially straight shape along the easy cut part 5 becomes the opening 10 of the bag main body 1. FIG. Thereby, the content X can be taken out easily. The width of the opening 10 (that is, the width of the edge seal portion 7) is set so that the contents X can be removed from the opening 10 without any problem.

Next, a second function of the packaging bag A according to the present embodiment, that is, a function that an unnecessary hole is hardly formed when an inadvertent external force is applied will be described.

For example, when the packaging bag A falls, the force acting on the bag body 1 is determined by the weight of the contents X, the acceleration caused by gravity, and the falling distance. Therefore, when the packaging bag A containing the heavy content X falls, the force acting on the bag body 1 described above and the force (drop impact force) from the drop surface G, which is a reaction force against this force. Acts on the packaging bag A.

For example, it is assumed that the upper end seal portion 3 of the bag body 1 is on the lower side and the packaging bag A is dropped. Then, since there is a large difference between the strength of the upper end seal portion 3 and the strength of both side ends (unsealed portions) 1a and 1b of the bag body 1, the impact of the drop received by the upper end seal portion 3 Are concentrated at the corners on both sides of the bag body 1. As a result, the corner portion is extremely bent and deformed into a square shape. By the way, if the easy-cut part 5 is formed in the part which deform | transforms into this square shape, since the easy-cut part 5 will be bent, a hole will become easy to be formed in the easy-cut part 5. FIG.

On the other hand, in the packaging bag A according to the present embodiment, each end portion 5a of the easy-cut portion 5 is separated from the

side end portions

1a and 1b of the bag body 1. In other words, the easy-cut portion 5 is formed at a position slightly inside from the

side end portions

1a and 1b of the bag body 1 and at a position inside the portion that deforms into a square shape. Thereby, even if the bag body 1 falls and deforms, the easy-cut portion 5 does not bend, so that no hole is formed in the easy-cut portion 5. Therefore, even if the bag body 1 falls and receives an impact, the bag body 1 can be prevented from breaking.

As described above, the packaging bag A according to the present embodiment includes the bag main body 1 that houses the contents X, and the bag main body 1 is formed by sealing the film F in the length direction and disposed on the back surface. Part 2, a pair of

end seals

3, 4 formed by sealing film F in the width direction and disposed at the end in the length direction, and one side end formed by sealing the film An edge seal portion 7 disposed in 1a, a notch 8 for an opening start point formed in the edge seal portion 7, and an easy cut portion 5 disposed on an extension line of the notch 8 in the opening direction, The easy cut portion 5 is disposed from one side to the other side of the back seal portion 2 from the back seal portion 2, and the end portions 5 a of the easy cut portion 5 are

side end portions

1 a and 1 b of the bag body 1. It is arrange | positioned away from.

Therefore, in the packaging bag A according to the present embodiment, the easy-cut portion 5 is arranged from a position on the left side of the back seal portion 2 to a position on the right side of the back seal portion 2. Specifically, the easy-cut part 5 is continuously formed with a constant width and is formed across at least the back seal part 2. And the edge seal part 7 arrange | positioned at the left side edge part 1a of the bag main body 1 is formed with the notch 8 for the opening start point, and the easy cut part 5 is arranged on the extension line of the notch 8 in the opening direction. Has been.

Thus, when the packaging bag is opened, the cut 8 becomes the starting point of opening (cutting), and the bag body 1 is cut along the easy-cut portion 5 arranged on the extension line of the cut 8. Therefore, since the bag body 1 is cut in a substantially straight line from the left end 1a to the right end 1b, anyone can easily open the packaging bag A.

For example, when a weak user opens the packaging bag A, transfers the contents X to another container (for example, a cup-shaped container), and drinks by adding water to the container, it is easy even with a weak force. The packaging bag A can be opened. In addition, since the opening 10 is linear, when the user transfers the contents X to another container, it is easy and easy.

Furthermore, in the packaging bag A according to the present embodiment, each end portion 5a of the easy-cut portion 5 is disposed away from the

side end portions

1a and 1b. Specifically, each end portion 5a of the easy cut portion 5 is not connected to the notch 8 (each end portion 5a of the easy cut portion 5 is separated from the notch 8), and the easy cut portion. Each end portion 5a of 5 is located at a portion slightly inside from the

side end portions

1a and 1b of the bag body 1.

Therefore, when the packaging bag A containing the contents X falls, a deformed portion that is bent and formed into a corner shape is formed at the corner portion of the bag body 1, and this deformable portion reaches the easy-cut portion 5. Can be prevented. Thereby, since it can prevent that a bag breaks in the part of the easy cut part 5, it can prevent that the content X leaks out from the bag main body 1. FIG.

In the packaging bag A according to the present embodiment, each end portion 5a of the easy-cut portion 5 is 10 to 25 mm (specifically, 10 to 15 mm, more specifically, from the

side end portions

1a and 1b of the bag body 1). Specifically, they are spaced apart by 13 to 15 mm). In other words, each end portion 5a of the easy-cut portion 5 is 14 to 36% (specifically, 14 to 21%, more specifically) of the width of the bag body 1 from the

side end portions

1a and 1b of the bag body 1. Specifically, they are arranged at a distance of 19 to 21%).

Therefore, in the packaging bag A according to the present embodiment, the end portions 5 a of the easy-cut portion 5 are arranged at a predetermined distance from the

side end portions

1 a and 1 b of the bag body 1. Thereby, even if the bag main body 1 deform | transforms because the packaging bag A falls, it can prevent that the easy cut part 5 deform | transforms. Therefore, the bag body 1 can be prevented from breaking.

Moreover, in the packaging bag A which concerns on this embodiment, while the back seal part 2 is formed by sealing the both-sides edge part of the film F to a length direction, the front-end | tip part 2a of the back seal part 2 is the bag main body 1. It is bent at the base end 2b of the back seal portion 2 so as to face the other side of the back.

Therefore, in the packaging bag A according to the present embodiment, the back seal portion 2 is bent at the base end portion 2b, the distal end portion 2a of the back seal portion 2 is positioned on the right side, and the base end portion of the back seal portion 2 2b is located on the left side. Thereby, since the folding direction of the back seal part 2 and the cutting direction of the cut 8 coincide with each other in the opening direction, it is further easy to open the packaging bag A.

Moreover, in the packaging bag A which concerns on this embodiment, while the edge seal part 7 is arrange | positioned along the length direction of the bag main body 1 from the one end seal part 3, it is the width direction of the bag main body 1. It is arranged so as to overlap the easy-cut portion 5.

Therefore, in the packaging bag A according to the present embodiment, the edge seal portion 7 is arranged along the length direction of the bag body 1 from the upper end seal portion 3. Moreover, the edge seal portion 7 is disposed so as to overlap the easy-cut portion 5 in the width direction of the bag body 1. Thereby, when the packaging bag A falls, since the part (left end part 1a) of the edge seal part 7 of the bag main body 1 does not deform | transform, it can prevent reliably that the left end part of the easy cut part 5 deform | transforms. .

Moreover, in the packaging bag A which concerns on this embodiment, the easy cut part 5 is formed in a rectangular shape, and the notch | incision 8 is arrange | positioned in the center part of the easy cut part 5 in the length direction of the bag main body 1. FIG. .

Therefore, in the packaging bag A according to the present embodiment, the easy-cut portion 5 is formed in a rectangular shape, specifically, in a strip shape elongated in the width direction of the bag body 1. The cut 8 is arranged in the center of the easy-cut portion 5 in the length direction of the bag body 1. Thereby, the cutting part started from the notch 8 can reliably reach the left end part 5 a of the easy-cut part 5.

Moreover, the manufacturing method of the packaging bag A which concerns on this embodiment forms the back seal part 2 by sealing the both-sides edge part of the film F to a length direction in order to make the strip | belt-shaped film F cylindrical. In order to make the tubular film F into a bag shape, the film F is sealed in the width direction to form a pair of

end seal parts

3, 4. The easy cut portions 5 are provided at both end portions so as to be arranged from one side of the back seal portion 2 to the other side of the back seal portion 2.

Therefore, in the packaging bag A according to the present embodiment, the film F includes the easy-cut portions 5 at both end portions. Thereby, when the back seal part 2, the upper end seal part 3 and the lower end seal part 4 are formed by sealing the film F, the easy cut part 5 is located on the left side of the back seal part 2. It will be arranged from the position over the right side of the back seal part 2.

Second Embodiment
Next, a packaging bag according to a second embodiment will be described with reference to FIG. In FIG. 5, the parts denoted by the same reference numerals as those in FIGS. 1 to 4 represent the same or corresponding components (elements) as in the first embodiment, and the description of those parts will not be repeated.

As shown in FIG. 5, the packaging bag B according to this embodiment is wider than the back seal portion 2 at a position near the upper end seal portion 3 of the bag body 1, that is, at the upper center portion of the bag body 1. A rectangular (substantially square) easy-to-cut part 5A is provided. The packaging bag B which concerns on this embodiment has arrange | positioned the easy cut part 5A in the upper part of the back seal part 2 compared with the packaging bag A which concerns on 1st Embodiment.

In this embodiment, the length dimension of the bag body 1 is 173 mm, the width dimension of the bag body 1 is 70 mm, and the vertical dimension “a” and the horizontal dimension “b” of the easy-cut part 5A are larger than the width dimension of the back seal part 2. 30 mm, the distance c between the upper end of the bag body 1 and the upper end of the easy cut portion 5A is 15 mm, the distance d between the side end portion 1a of the bag body 1 and the end portion 5A1 of the easy cut portion 5A is 20 mm, The distance e between the side end 1b of the bag body 1 and the end 5A1 of the easy cut portion 5A is 20 mm.

<Example>
Next, examples will be described. In order to compare with the packaging bag A of the said 1st Embodiment and the packaging bag B of 2nd Embodiment, the packaging bag C of the comparative example 1 and the packaging bag D of the comparative example 2 which are shown in FIG.6 and FIG.7 were prepared. The packaging bag C of Comparative Example 1 shown in FIG. 6 includes a strip-shaped easy-cut portion 5B extending over both

side end portions

1a and 1b of the bag body 1. The packaging bag D of the comparative example 2 shown in FIG. 7 is provided with strip-shaped

easy cut portions

5C and 5C extending over the upper end seal portion 3 and the lower end seal portion 4 of the bag body 1. In addition, the packaging bag C of the comparative example 1 and the packaging bag D of the comparative example 2 are not provided with the edge seal part 7 and the notch | incision 8. FIG.

First, a single drop test and a packaging drop test were performed on the packaging bags A, B, C, and D in which 50 g of contents were packaged. The single unit drop test is a test in which the packaging bag is dropped from a position having a height (drop distance) of 80 cm. The number of samples for the single drop test is 63 for the packaging bag A of the first embodiment, 63 for the packaging bag B of the second embodiment, 60 for the packaging bag C of Comparative Example 1, and for the packaging bag D of Comparative Example 2. The number was 60.

The packaging drop test is a test in which an outer box filled with 21 packaging bags is dropped three times from a position of 1.2 m in height. The number of samples of the packaging drop test is 3 boxes (3 boxes × 21 = 63) for the packaging bag A of the first embodiment, and 3 boxes (3 boxes × 21 = 63) for the packaging bag B of the second embodiment. ), 15 packaging bags C of Comparative Example 1 (15 boxes × 21 = 315) and 15 packaging bags D of Comparative Example 2 (15 boxes × 21 = 315).

The packaging bag A of the first embodiment and the packaging bag B of the second embodiment were not broken in the unit drop test and the package drop test. On the other hand, the packaging bag C of Comparative Example 1 broke 2 out of 60 pieces in the single drop test, and broke 8 out of 315 pieces in the packaging drop test. On the other hand, two of the 60 packaging bags D of Comparative Example 2 were broken in the single drop test, and four of 315 were broken in the packaging drop test.

In addition, for the packaging bag A according to the first embodiment and the packaging bag B according to the second embodiment, a test of cross-cutability from the notch 8 to the easy-cutting portion 5 and the easy-cutting portion 5A (whether cutting in the width direction is easy or not) Was carried out. As a result, in both the packaging bag A of the first embodiment and the packaging bag B of the second embodiment, the cross-cut property was good.

Moreover, with respect to the packaging bag A of the first embodiment and the packaging bag B of the second embodiment, the straightness test in the easy-cut portion 5 (easy-cut portion 5A) (whether the cut in the width direction is linear) No) was carried out. As a result, in the packaging bag A of the first embodiment, since the cut portion (opening opening 10) is along the easy-cut portion 5, the straightness is good. In the packaging bag B of 2nd Embodiment, since the width | variety of the easy cut part 5A was wide, although a cut part (opening opening 10) moved up and down somewhat in the easy cut part 5A, there was no problem.

In addition, a tear sensory test was conducted on 12 persons on the packaging bag A of the first embodiment. As a result, 10 people felt “sharpness is very good”, 1 felt “sharpness was good”, and the other 1 felt “good”.

As described above, the packaging bag A and the packaging bag B according to the embodiment of the present invention can be easily opened even with a weak force and can be opened so that the cut portion is substantially linear. Make it easy to transfer. Furthermore, the packaging bag A and the packaging bag B of the embodiment of the present invention can withstand a drop impact. These functions are also demonstrated from the above test results.

As described above, according to the packaging bag A and the packaging bag B of the present invention, when the user manually opens the bag, it is easy to open, and on the contrary, it is unnecessary when an unintentional external force is applied. It is possible to provide a packaging bag having two contradictory functions that it is difficult to form a simple hole.

For example, when the user opens the packaging bag A (packaging bag B), transfers the contents X to another container (for example, a cup-shaped container), adds water to the container and drinks it, like a patient Even a weak user can easily open the packaging bag A (packaging bag B). And since the opening 10 is formed in linear form, it can carry out easily that the content X is transferred to another container. Furthermore, although the easy cut part 5 which gave the flaw processing etc. is provided, even if the packaging bag A (packaging bag B) which has enclosed the content X falls, the packaging bag A (packaging bag B) The bag can be prevented from being broken.

As described above, the packaging bag A (packaging bag B) of the present invention can improve both bag breakage prevention and openability. And, since it can be designed in a pillow type with a vertically long stick shape or with a wide width, it is designed so that the powdered contents X can be easily transferred to another container such as a cup. be able to. Therefore, the packaging bag A (packaging bag B) of the present invention is a packaging bag particularly suitable for weak patients and children.

It should be noted that the packaging bag according to the present invention is not limited to the above-described embodiment, and it is free to make design changes and improvements as needed as long as they do not depart from the gist of the invention. In addition, the configurations and methods of the plurality of embodiments described above may be arbitrarily adopted and combined (the configurations and methods according to one embodiment may be combined with the configurations and methods according to other embodiments). Further, it is of course possible to arbitrarily select configurations, methods, and the like according to various modifications described below and adopt them in the configurations, methods, and the like according to the above-described embodiments.

For example, in the packaging bag A (packaging bag B) in the above-described embodiment, the configuration in which the easy-cut portion 5 (easy-cut portion 5A) is provided on the front surface and the back surface of the bag body 1 has been described. Absent. Specifically, the packaging bag may have a configuration in which the easy cut portion 5 (easy cut portion 5A) is provided only on the back surface of the bag body 1. In short, the packaging bag is arranged on the back surface of the bag body 1 so that the easy-cut portion 5 (easy-cut portion 5A) is arranged from one side of the back seal portion 2 to the other side of the back seal portion 2. What is necessary is just to provide the easy cut part 5 (easy cut part 5A).

The packaging bag according to the present invention is provided with a combination of a cut and an easy-cut portion to improve the opening. In addition, the packaging bag according to the present invention can form an opening having a width that allows the contents to be taken out, even if it has a cut (edge seal part), and even if it has an easy-cut part, it breaks when dropped. Can be prevented from bagging. Furthermore, the packaging bag according to the present invention can be used as a packaging bag for various contents (powder, granular or massive solid, liquid) such as pharmaceuticals and foods. And the packaging bag which concerns on this invention is a packaging bag suitable for the user with weak power.

DESCRIPTION OF SYMBOLS 1 ... Bag main body, 1a ... Side edge part (left side edge part), 1b ... Side edge part (right side edge part), 2 ... Back seal part, 2a ... Tip part, 2b ... Base end part, 3 ... End part seal part (Upper end seal portion), 4 ... end seal portion (lower end seal portion), 5, 5A ... easy cut portion, 5a, 5A1 ... end portion, 7 ... edge seal portion, 8 ... notch, 10 ... opening opening, A, B ... packaging bag, F ... film, X ... contents

Claims

It has a bag body that contains the contents,
The bag body is
A back seal portion formed by sealing the film in the length direction and disposed on the back surface;
A pair of end seals formed by sealing the film in the width direction and disposed at the end in the length direction;
An edge seal portion formed by sealing the film and disposed at one side end portion;
A notch for the opening start point formed in the edge seal part;
An easy cut portion arranged on an extension line of the cut in the opening direction,
The easy cut portion is disposed from one side of the back seal portion to the other side of the back seal portion,
Each of the end portions of the easy-cut portion is a packaging bag arranged to be separated from a side end portion of the bag body.
The packaging bag according to claim 1, wherein each end of the easy-cut portion is disposed 10 to 25 mm apart from a side end of the bag body.
The packaging bag according to claim 2, wherein each end of the easy-cut portion is disposed 10 to 15 mm apart from a side end of the bag body.
The packaging bag according to claim 1, wherein each end of the easy-cut portion is arranged at a distance of 14 to 36% of the width of the bag body from the side edge of the bag body.
The packaging bag according to claim 2, wherein each end of the easy-cut portion is disposed at a distance of 14 to 21% of the width of the bag body from the side edge of the bag body.
The back seal portion is formed by sealing both side edges of the film in the length direction, and the base of the back seal portion is arranged such that the front end portion of the back seal portion faces the other side of the bag body. The packaging bag according to any one of claims 1 to 5, which is bent at an end.
The said edge seal part is arrange | positioned so that it may overlap with the said easy cut part in the width direction of the said bag main body while it is arrange | positioned along the length direction of the said bag main body from one said edge part seal part. Item 7. The packaging bag according to any one of Items 1 to 6.
The easy cut portion is formed in a rectangular shape,
The packaging bag according to any one of claims 1 to 7, wherein the cut is disposed in a central portion of the easy-cut portion in a length direction of the bag body.
A method for producing a packaging bag according to any one of claims 1 to 8,
Sealing the both side edges of the film in the length direction so as to make the belt-like film cylindrical, and forming the back seal part;
Sealing the film in the width direction so as to form the tubular film into a bag shape, and forming a pair of the end seal portions,
The method for manufacturing a packaging bag, wherein the easy-cut portion is provided on both side ends so that the easy-cut portion is disposed from one side of the back seal portion to the other side of the back seal portion. .