JP2022011176A - Handle structure of packaging bag - Google Patents

Abstract

To provide a handle structure of a packaging bag that inhibits curling of a handle piece inside a cut formed in conformity with the shape of an opening part for handle.SOLUTION: In a handle structure of a packaging bag 100, in two overlapped films 1, 3 and in two overlapped films 2, 3, a handle piece 8 is formed at an opening part 70 used as a handle. Each of the two films 1, 3 and 2, 3 comprises at least sealant layers 101. The two films 1, 3 and 2, 3 are each overlapped so that sealant layers 101 opposed to each other. The handle piece 8 has an adhesion part 9 where the two films 1, 3 or 2, 3 are each heat-sealed to each other along at least a part of an edge part of the handle piece 8.SELECTED DRAWING: Figure 3

Description

The present invention relates to a handle structure of a packaging bag, and more particularly to a cut-shaped handle structure for inserting and gripping a finger.

Conventionally, in over-the-counter sales, an outer bag containing a set of a plurality of containers related to each other, such as a shampoo bottle and a rinse bottle, has been used. At the top of the packaging bag, such as an outer bag, an opening for a handle into which a finger can be inserted is formed for easy carrying. By inserting a finger into such an opening, a portion between the opening and the upper edge of the packaging bag is gripped.
Patent Document 1 describes an example of a packaging bag having a gripping structure such as an opening.

Japanese Unexamined Patent Publication No. 2012-6626

By the way, when a finger is inserted into the opening to grip the packaging bag, the upper edge of the opening may bite into the finger. In particular, when the contents of the packaging bag are heavy, such as when a plurality of containers such as shampoo are packaged in the outer bag, the upper edge of the opening may bite more strongly into the fingers.

Therefore, a packaging bag having a handle structure in which a cut is formed along the shape of the opening for the handle is also used. By inserting the finger into the cut, the handle piece is folded back to form the upper edge of the opening. Since the upper edge of the opening is folded back, the upper edge is prevented from biting into the fingers.

However, if a cut is formed along the shape of the opening, the handle piece inside the cut may be curled and the packaging bag displayed on the display shelf in the store may not look good.
The cause of the curl of the handle piece may be that the film constituting the handle piece is slightly stretched due to the moisture content. Further, when the film is manufactured, the unstretched film laminated in a state where tension is applied in the transport direction of the film may be slightly shrunk after the packaging bag is manufactured, so that curl may occur.

The present invention has been made in view of the above circumstances, and has a handle structure of a packaging bag in which the handle piece inside the cut formed along the shape of the opening for the handle is suppressed from curling. The purpose is to provide.

In order to achieve the above object, the present invention is a handle structure of a packaging bag, in which a handle piece is formed in an opening for a handle in two stacked films, and each of the two films is formed. The two films are laminated so that the sealant layers face each other, and the handle pieces are formed along at least a part of the edge portion of the handle pieces. The films are characterized by having adhesive portions that are heat-sealed with each other.

In the packaging bag of the present invention, curling of the handle piece is suppressed by providing an adhesive portion in which the two films on both side edges and the lower edge of the handle piece are heat-sealed with each other. As a result, it is possible to prevent the appearance of the packaging bag displayed on the display shelf in the store from being deteriorated by the curl of the handle piece.

According to the present invention, it is possible to provide a handle structure of a packaging bag in which a handle piece formed in an opening for a handle is suppressed from curling.

It is a front view of the packaging bag according to 1st Embodiment of this invention. (A) shows a schematic cross-sectional view of a film constituting a packaging bag, and (b) shows a schematic cross-sectional view of the packaging bag shown in FIG. 1 along the line AA. (A) shows the front view of the main part showing the handle structure of the packaging bag shown in FIG. 1, and (b) shows the front view of the main part when the handle piece constituting the handle structure is folded upward. (A) shows a front view of a main part of a packaging bag according to a second embodiment of the present invention, and (b) shows a front view of a main part of a packaging bag according to a third embodiment of the present invention. (A) shows a front view of a main part of a packaging bag according to a fourth embodiment of the present invention, and (b) shows a front view of a main part of a packaging bag according to a fifth embodiment of the present invention. It is a front view of the packaging bag according to the 6th Embodiment of this invention. FIG. 6A shows a front view of a main part showing the handle structure of the packaging bag shown in FIG. 6, and FIG. 6B shows a schematic cross-sectional view of the packaging bag shown in FIG. 6 along the line AA. The front view of the main part of the packaging bag in 7th Embodiment of this invention is shown.

[First Embodiment]
Hereinafter, the handle structure of the packaging bag according to the first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a front view of the packaging bag according to the present embodiment. Further, FIG. 2A shows a schematic cross-sectional view of the film constituting the packaging bag, and FIG. 2B shows a schematic cross-sectional view of the packaging bag shown in FIG. 1 along the line AA.

As shown in FIG. 1, the packaging bag 100 of the present embodiment is formed on the first body film 1, the second body film 2 superposed on the first body film 1, and the upper edge 100a of the packaging bag 100. Along with this, a reinforcing film 3 is provided between the first body film 1 and the second body film 2 (see FIG. 2B). A storage portion S is formed between the first body portion film 1 and the second body portion film 2.

FIG. 2A shows a schematic cross-sectional view of the first body film 1. As shown in the figure, the first body film 1 includes at least a sealant layer 101, and in the present embodiment, further has a base material layer 102 laminated on the sealant layer 101.
Further, the second body film 2 and the reinforcing film 3 also have the same or more than one layer structure as the first body film 1.

Various materials can be considered as the sealant layer 101, and the sealant layer may be, for example, various polyethylene-based, polypropylene-based, or polyester-based materials (for example, Linear Low Density Polyethylene: LLDPE), unstretched low density polyethylene (LDPE), unstretched medium density polyethylene (MDPE), unstretched high density polyethylene (HDPE), unstretched polypropylene (LLDPE) Cast Polypropylene (CPP) can be used. In addition, various materials that can be heat-sealed, such as an ethylene-propylene random copolymer and an ethylene-propylene block copolymer, can also be used.

The base material layer 102 includes various polypropylene-based, polyethylene-based, polyamide-based, and polyester-based materials, for example, biaxially stretched nylon (Nylon: NY), uniaxially stretched high-density polyethylene (HDPE), and two. Axial stretched polyethylene (Oriented Polyethylene), biaxially stretched polypropylene (Oriented Polypropylene: OPP), polyethylene terephthalate (PET), polybutylene Terephthalate (PBT), and other synthetic resins that can be used as a base material layer. Sexual materials can be used.

When NY / LLDPE is used as a combination of the base material layer 102 and the sealant layer 101, the strength is expected to increase due to NY. Further, when HDPE / LLDPE is used, the packaging bag is formed of the same olefin-based material, so that the recyclability after use is improved. Similarly, when OPP / CPP is used, recyclability is improved. Further, PET / LLDPE may be used in consideration of the material cost.
Further, even when the packaging bag has a large capacity, it can be provided with piercing property, drop resistance, and rigidity as a three-layer structure of PET / NY / LLDPE.

Further, the structure of each film may be a single layer of the sealant layer as long as the sealant layer is provided at the bottom layer, which can improve recyclability and economy. On the other hand, by laminating the above-mentioned other layer in addition to the sealant layer, piercing property, drop resistance and rigidity can be improved.
Further, in the present embodiment, each film has a two-layer structure, but the structure of each film may be such that three or more layers of films are laminated. Further, another layer may be interposed between the sealant layer and the base material layer.

When LLDPE is used as the sealant layer 101 and NY is used as the base material layer 102, for example, the thickness of the LLDPE layer is 80 μm and the thickness of the NY layer is 15 μm. On the other hand, when the base material layer 102 is HDPE, for example, the thickness of the LLDPE layer is 80 μm and the thickness of the HDPE layer is 25 μm.

In the packaging bag 100, the two films are superposed so that the sealant layers 101 face each other. That is, as shown in FIG. 2B, the first body film 1 and the second body film are overlapped so that the sealant layers 101 face each other, and the first body film 1 and the reinforcing film 3 are also overlapped. The sealant layers 101 are overlapped so as to face each other, and the second body film 2 and the reinforcing film 3 are also overlapped so that the sealant layers 101 face each other.

Then, the sealant layers 101 of the laminated films are partially heat-sealed to form a heat-sealed portion.
As shown in FIG. 1, a lower side seal portion in which the first body film 1 and the second body film 2 are heat-sealed along the side edges of both sides of the first and second body films 1 and 2. 4 is formed. In the first and second body films 1 and 2, the sealant layers 101 are overlapped with each other so as to face each other. Therefore, the sealant layers 101 are heat-sealed to form the lower side seal portion 4. To.
Further, since the sealant layers 101 are overlapped with each other so as to face each other, the bottom seal portion 6a is formed by heat-sealing the sealant layers 101 to each other.

Further, as shown in FIG. 1, the first body film 1, the second body film 2, and the reinforcing film 3 are heat-sealed along both side edges of the first and second body films 1 and 2, respectively. The upper side seal portion 5 is formed.
As shown in FIG. 2B, the reinforcing film 3 is inserted between the first body film 1 and the second body film 2. Therefore, in the region where the first and second body films 1 and 2 and the reinforcing film 3 overlap, both side edges of the packaging bag 100 are pressure-bonded with a heat sealer (not shown) and heat-sealed. An upper side seal portion 5 in which the body film 1 and the reinforcing film 3 are heat-sealed is formed, and an upper side seal portion 5 in which the second body film 2 and the reinforcing film 3 are heat-sealed is formed. ..

Further, as shown in FIGS. 1 and 2B, the first body film 1 and the reinforcing film 3 are heat-sealed along the upper edge 100a of the packaging bag 100, and the second body film 2 is heat-sealed. A top seal portion 6 is formed in which the reinforcing film 3 and the reinforcing film 3 are heat-sealed.
As described above, the reinforcing film 3 is inserted between the first body film 1 and the second body film 2. Therefore, in the region where the first and second body films 1 and 2 and the reinforcing film 3 overlap, both side edges of the packaging bag 100 are pressure-bonded with a heat sealer (not shown) and heat-sealed to heat-seal the upper side seal. Part 5 is formed. In FIG. 2B, the heat-sealed surface of the top seal portion 6 is schematically shown by a thick black line.

As shown in FIG. 1, both side edges of the handle piece 8 located in the opening 70 for the handle as a handle structure in the reinforcing region 110 where the first and second body films 1 and 2 and the reinforcing film 3 overlap. A cut 7 is formed that defines the lower edge 82 between the 81 and the both side edges 81. The cut 7 penetrates the two overlapping films. That is, as shown in FIG. 2B, the cut 7 penetrates the first body film 1 and the reinforcing film 3, and also penetrates the second body film 2 and the reinforcing film 3.

FIG. 3A shows a front view of a main part showing the handle structure of the packaging bag 100 shown in FIG. 1, and FIG. 3B shows a key point when the handle piece 8 constituting the handle structure is folded upward. The front view of the part is shown. As shown in FIG. 3B, the opening 70 is defined by the cut 7 and the folded portion 80 when the handle piece 8 is folded upward.

The opening 70 can be selected in any size and shape, but preferably has a width in which four fingers other than the thumb can be inserted. Further, the height of the portion between the opening 70 and the upper edge 100a of the packaging bag 100 is easy to grasp with a finger inserted into the opening 70, and the weight of the packaging bag 100 in which the storage portion is stored. It is preferable that the height is such that sufficient strength can be secured to support the.

The cut 7 has a shape that is curved in a convex shape toward the periphery of the opening 70. Specifically, the cut 7 is curved so as to be convex on both sides at the left and right side edges 81 of the handle piece 8. It is curved so as to be convex downward at the lower edge between the side edges 81. Further, in the present embodiment, the portions of the handle piece 8 near the left and right ends are curved so as to be convex upward, continuous with the both side edges 81. By bending the cut 7 so as to be convex upward in this way, it is possible to prevent the ends of the cut 7 from being torn at both ends of the folded portion 80 when the handle piece 8 is folded upward.

As shown in FIG. 3 (a), the handle piece 8 has an adhesive portion 9 in which two films are heat-sealed to each other along at least a part of the cut 7. In the present embodiment, the adhesive portion 9 is continuously located along both side edges 81 of the handle piece 8, continuously along the lower edge 82 between the side edges 81, and further, both side edges 81. It is also continuously located at the edge 83 of the portion curved so as to be convex upward extending from.
In the present embodiment, as shown in FIG. 2B, the first body film 1, the second body film 2, and the reinforcing film 3 are along both side edges of the first and second body films 1 and 2. The bonded portion 9 is formed by heat-sealing each of the and.

Further, as shown in FIG. 3A, the opening edge adhesive portion 10 is formed at a position facing the adhesive portion 9 of the handle piece 8 along the edge of the opening 70. Also in the opening edge bonding portion 10, in the present embodiment, as shown in FIG. 2B, the first body film 1 and the second body film 1 and the second body film 1 and the second body film 1 and the second body film 1 and the second body film 1 and the second body film 1 and the second body film 1 and the second body film 1 and the second body film 1 and the second body film 1 and the second body film 1 and 2 along both side edges of the first and second body film films 1 and 2. The body film 2 and the reinforcing film 3 are heat-sealed, respectively.

By forming the adhesive portion 9 along the edge of the handle piece 8 in this way, if a cut is formed along the shape of the opening, it is possible to prevent the handle piece 8 inside the cut 7 from curling. In particular, even when the base material layer 102 is a film such as a nylon film that may be slightly stretched due to moisture, the sealant layer 101 may be slightly shrunk after bag making. Even if it is a film, the handle piece 8 is prevented from curling.
As a result, it is possible to prevent the appearance of the packaging bag displayed on the display shelf in the store from being deteriorated by the curl of the handle piece 8.

[Second Embodiment]
Next, the handle structure of the packaging bag according to the second embodiment of the present invention will be described.
In each of the following embodiments, the description of the same components as those in the first embodiment described above will be omitted.
FIG. 4A shows a front view of a main part of the packaging bag according to the present embodiment. As shown in the figure, the handle structure of the present embodiment has a point-shaped connecting portion 11 that connects both side edges 81 and the lower edge 82 of the handle piece 8 and the edge of the opening, respectively. By providing the connecting portion 11 in this way, it is possible to further prevent the handle piece 8 from curling.

[Third Embodiment]
Next, the handle structure of the packaging bag according to the third embodiment of the present invention will be described.
FIG. 4B shows a front view of a main part of the packaging bag according to the present embodiment. As shown in the figure, in the present embodiment, the adhesive portion 9a is selectively positioned along both side edges 81 of the handle piece 8. That is, in the present embodiment, the adhesive portion 9a is not provided on the lower edge 82 of the handle piece 8.

The sealant layer 101 and the base material layer 102 are laminated to each other in a state where tension is applied in the sheet transport direction (horizontal direction of the packaging bag) to form a film. Therefore, when the sealant layer 101 is a non-stretched film, the sealant layer 101 and the base material layer 102 are laminated with each other in a state of being slightly stretched in the transport direction of the material sheet of the sealant layer 101 in the bag making line. .. As a result, after the bag is made, the non-stretched film of the sealant layer 101 slightly shrinks in the lateral direction of the packaging bag, so that the vicinity of both side edges 81 of the handle piece 8 may be curled. Therefore, by providing the adhesive portion 9a along the both side edges 81, it is possible to effectively prevent the handle piece 8 from curling while reducing the adhesive portion 9a.
Of the edges of the opening 70, the opening edge bonding portion 10a is also formed by heat sealing at the portion facing the bonding portion 9a across the cut 7.

Further, in the present embodiment, the adhesive portion 9a is located along the portion of the both side edges 81 and the lower edge 82 of the handle piece 8 in which the radius of curvature of the curved shape is 20 mm or less. As a result, it is possible to effectively prevent the portion having a small radius of curvature, which is easily curled, from being curled.

[Fourth Embodiment]
Next, the handle structure of the packaging bag according to the fourth embodiment of the present invention will be described.
FIG. 5A shows a front view of a main part of the packaging bag according to the present embodiment. As shown in the figure, in the present embodiment, the adhesive portion 9b is formed intermittently along the cut 7. As a result, it is possible to effectively prevent the handle piece 8 from being curled by the small number of adhesive portions 9b.
Of the edges of the opening 70, the opening edge bonding portion 10b is also formed by heat sealing at the portion facing the bonding portion 9b across the cut 7.

[Fifth Embodiment]
Next, the handle structure of the packaging bag according to the fifth embodiment of the present invention will be described.
FIG. 5B shows a front view of a main part of the packaging bag according to the present embodiment. As shown in the figure, in the present embodiment, the adhesive portion 9 is located along the both side edges 81 and the lower edge 82 of the handle piece 8. In the embodiment, the adhesive portion is not provided on the edge of the opening 70.

That is, the adhesive portion 9 is located along the both side edges 81 and the lower edge 82 of the handle piece 8, and is below the handle piece 8 among the edges of the lower edge 82 of the handle piece 8 and the opening 70 sandwiching the cut 7. Only at the edge 82 are the two films heat-sealed against each other. That is, the edge of the opening 70 is not heat-sealed.
By the way, since the heat-sealed portion is harder than the heat-sealed portion, when the edge (opening edge) of the opening 70 is heat-sealed, the opening edge is also hardened. As a result, when the finger inserted into the opening 70 hits the heat-sealed and hardened opening edge, it may feel uncomfortable.
On the other hand, in the present embodiment, the opening edge is not heat-sealed, so that the opening edge is not hardened. Therefore, when the finger inserted into the opening 70 hits the opening edge, the contact is soft and the discomfort can be reduced.

[Sixth Embodiment]
Next, the handle structure of the packaging bag according to the sixth embodiment of the present invention will be described.
FIG. 6 shows a front view of the packaging bag according to the present embodiment. In the figure, the same components as those of the package 100 in the first embodiment shown in FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted.

7 (a) shows a front view of a main part showing the handle structure of the packaging bag shown in FIG. 6, and FIG. 7 (b) is a schematic cross-sectional view taken along the line AA of the packaging bag shown in FIG. The figure is shown. As shown in FIG. 7A, in the handle structure of the packaging bag 200 of the present embodiment, the handle piece 8a constitutes the upper edge portion of the opening 70a and has a shape curved downward in a convex shape. have.

Further, as shown in FIG. 7A, an opening edge adhesive portion 10c is formed on the entire circumference of the opening 70a including the edge portion of the handle piece 8a, and the edge portion of the handle piece 8a thereof is formed with the adhesive portion 9c. It has become. In the opening edge adhesive portion 10c including the adhesive portion 9c, as shown in FIG. 7B, the first body film 1 and the reinforcing film 3 are heat-sealed along the peripheral edge of the opening 70a, and the reinforcing film 3 is heat-sealed. The second body film 2 and the reinforcing film 3 are heat-sealed.

By forming the adhesive portion 9 along the edge of the handle piece 8a in this way, it is possible to prevent the handle piece 8a from curling. In particular, even when the base material layer 102 is a film such as a nylon film that may be slightly stretched due to moisture, the sealant layer 101 may be slightly shrunk after bag making. Even in the case of a film, the handle piece 8a is prevented from curling. As a result, it is possible to prevent the appearance of the packaging bag 200 displayed on the display shelf in the store from being deteriorated by the curl of the handle piece 8a.

[7th Embodiment]
Next, the handle structure of the packaging bag according to the seventh embodiment of the present invention will be described.
FIG. 8 shows a front view of a main part showing the handle structure of the packaging bag in the present embodiment. As shown in FIG. 8, in the handle structure of the package in the present embodiment, at least the lower edge of the peripheral edge of the opening 70a is not heat-sealed, and only the edge of the handle piece 8a is heat-sealed. There is. The unheat-sealed lower edge of the opening 70a is not stiff. Therefore, when the finger inserted into the opening 70 hits the lower edge of the opening edge 70a, the contact is soft and the discomfort can be reduced.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. For example, in the above-described embodiment, the example in which the cut defining the opening has a curved shape curved so as to be convex toward the periphery of the opening has been described, but the cut 7 is not limited to the curved shape. , Straight lines and / or polygonal lines, or a combination of these and curves.
Further, in the above-described embodiment, as shown in FIG. 1, an example of a handle structure of a packaging bag having a rectangular outer shape when viewed from the front has been described, but in the present invention, the shape of the packaging bag is not limited to this. For example, it may have a trapezoidal outer shape or an irregular outer shape.
Further, in the above-described embodiment, an example of the handle structure of the packaging bag provided with the upper seal portion has been described, but the present invention can also be applied to the handle structure of the packaging bag without the upper seal portion.
Further, in the first to fifth embodiments described above, an example in which all of the cuts 7 have a curved shape that is convexly curved toward the periphery of the opening 70 has been described, but the present invention describes the cuts 7. It can also be applied when only a part has a curved shape.

1 1st body film 2 2nd body film 3 Reinforcing film 4 Lower side seal part 5 Upper side seal part 6 Top seal part 6a Bottom seal part 7 Cut 70, 70a Opening 8 Handle piece 81 Both sides edge 82 Lower edge 9 , 9a, 9b, 9c Adhesive part 10,10a, 10b, 10c Open edge adhesive part 11 Connecting part 100,200 Packaging bag 100a Upper edge 100b Lower edge 110 Reinforcing area S Storage part

Claims (10)

The handle structure of the packaging bag
In the two stacked films constituting the package, a handle piece is formed in the opening for the handle.
Each of the two films has at least a sealant layer and
The two films are superposed so that the sealant layers face each other.
The handle structure of a packaging bag, wherein the handle piece has an adhesive portion in which the two films are heat-sealed to each other along at least a part of an edge portion of the handle piece. The handle structure of the packaging bag according to claim 1, wherein the handle piece is defined by a cut penetrating the two films so that both side edges and a lower edge between the both side edges are defined. .. The handle structure of a packaging bag according to claim 2, wherein the adhesive portion is located along at least a part of both side edges and a lower edge of the handle piece. The handle structure of the packaging bag according to claim 2 or 3, further comprising a point-shaped connecting portion for connecting at least one of the both side edges and the lower edge of the handle piece to the edge of the opening. .. A part or all of the cut has a curved shape that is convexly curved toward the periphery of the opening.
The bonded portion according to any one of claims 2 to 4, wherein the adhesive portion is located along a portion of the both side edges and the lower edge of the handle piece having a radius of curvature of 20 mm or less of the curved shape. The handle structure of the described packaging bag. When the adhesive is located along at least a portion of the lower edge
The claim is characterized in that the two films are heat-sealed with each other only at the lower edge of the handle piece among the lower edge of the handle piece and the edge of the opening sandwiching the cut. The handle structure of the packaging bag according to any one of Items 2 to 5. The handle structure of the packaging bag according to claim 1, wherein the handle piece constitutes an upper edge portion of the opening and has a downwardly convex shape. The handle structure of the packaging bag according to claim 7, wherein at least the lower edge of the peripheral edge of the opening is not heat-sealed. At least one of the two films comprises a sealant layer and a substrate layer laminated on the sealant layer.
The handle structure of the packaging bag according to any one of claims 1 to 8, wherein the base material layer is a stretched film. The handle structure of the packaging bag according to any one of claims 1 to 9, wherein the sealant layer is a non-stretched film.

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