JP2016169051A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag which allows a lid part to be easily turned over and allows a take-out opening to be easily opened.SOLUTION: A packaging bag 10 includes a bag body 1 which is made by forming a base material into a bag shape. In the bag body 1, there is formed a take-out opening for taking out a stored object in the plane of the base material. The base material is formed of a laminate film including a front film and a back film. In the plane of the front film, there is formed a front side cut line 41 having a nonlinear shape in a plan view. In addition, in the plane of the back film, there is formed a back side cut line 51 having a nonlinear shape in the plan view whose position is shifted from that of the front side cut line 41. A front film 4 and a back film 5 in a region between the front side cut line 41 and the back side cut line 51 are adhered to each other so as to be peelable between the layers thereof. In one side part 1a of the bag body 1, there is formed a small piece part 2 narrower than the side part, and part of the front side cut line 41 is extended in the plane of the small piece part 2.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a packaging bag capable of forming an outlet for taking out stored items.

Conventionally, various articles such as foods such as sweets and bonito, hygiene products such as wet tissues, and pharmaceuticals are stored in flexible packaging bags.
Among such packaging bags, a packaging bag is known in which a part can be taken out to create an outlet for stored items.
For example, Patent Document 1 has a bag body formed of a laminated film in which a front film and a back film are laminated via an adhesive layer, and the surface of the front film is used to form an outlet in the bag body. A non-linear front side cut line is formed in a plan view, and a non-linear back side cut line is formed in the plane of the back film that is displaced from the front cut line in the plane of the back film, A packaging bag is disclosed in which the interlayer between the front film and the back film in a region between the score line and the back side score line is pseudo-bonded.

  In this packaging bag, when a part of the front film (lid) is pulled away from the bag body using the front side cut line, the front film and the back film in the pseudo-bonded area are delaminated, and the outlet is removed. Is formed. In this packaging bag, an outlet is created by rolling a cover part that is a part of the front film surrounded by a front cut line. However, since the cover part is a part of the front film (that is, the surface of the cover part is Because it is included on the surface of the front film), there is a problem that it is difficult to curl the edge of the lid.

JP 2012-035896 A

  An object of the present invention is to provide a packaging bag in which a lid can be easily rolled and an outlet can be easily opened.

  The first packaging bag of the present invention is a bag body in which a base material is formed in a bag shape, and has a bag body in which an outlet for taking out stored items is formed in the surface of the base material. The substrate on which the outlet is formed is composed of a laminated film having a front film and a back film, a front-side cut line that is non-linear in plan view is formed in the surface of the front film, and the back film A plane-side non-linear back side cut line that is displaced with respect to the front side cut line is formed in the plane, and the interlayer between the front film and the back film in a region between the front side cut line and the back side cut line In the packaging bag that is detachably bonded, a small piece portion that is narrower than the side portion is formed on one side portion of the bag body, and a part of the front-side cut line is formed on the small piece portion. It extends in the plane.

  In a preferred packaging bag of the present invention, the small piece portion is formed of a portion partitioned from the side portion by a cut or cut portion formed in one side portion of the bag body.

  The second packaging bag of the present invention is a bag body in which a base material is formed in a bag shape, and has a bag body in which an outlet for taking out stored items is formed in the surface of the base material, The substrate on which the outlet is formed is composed of a laminated film having a front film and a back film, a front-side cut line that is non-linear in plan view is formed in the surface of the front film, and the back film A plane-side non-linear back side cut line that is displaced with respect to the front side cut line is formed in the plane, and the interlayer between the front film and the back film in a region between the front side cut line and the back side cut line In the packaging bag, which is releasably bonded, one side portion of the bag body includes an adhesive portion bonded by overlapping a part of the base material, and an inner edge of the adhesive portion extends linearly. A part of the front side cut line extends in the straight line. Beyond imaginary extension straight line of the inner edge, which extends in the plane of said side.

  In a preferred packaging bag of the present invention, a folding auxiliary line is formed on the bag body corresponding to the linearly extending inner edge or the vicinity of the inner edge.

  In the first packaging bag of the present invention, since the lid portion is composed of a part of the surface film, the lid portion can be prevented from being inadvertently rolled, and further, when opened, a small piece portion (second packaging bag) In this case, the lid portion can be easily rolled by bending the side portion of the bag body.

The front view of the packaging bag which concerns on 1st Embodiment of this invention. The front view which added the countless dot to the range which the shaded area and the peeling part were provided in the range in which the adhesion part was provided in order to illustrate the adhesion part and peeling part of the packaging bag intelligibly. The rear view which added the shading to the range in which the adhesion part was provided in order to illustrate the adhesion part of the packaging bag intelligibly. Sectional drawing cut | disconnected by the IV-IV line of FIG. Sectional drawing cut | disconnected by the VV line | wire of FIG. The perspective view which shows the state which bent the small piece part when opening the packaging bag. Reference sectional drawing of the state which bent the small piece part. However, in the reference sectional view, the masking layer and the adhesive layer are not shown. The perspective view which shows the state which rolled the cover part of the packaging bag, and opened the outlet. The front view of the packaging bag which concerns on the 1st modification of 1st Embodiment. The front view of the packaging bag which concerns on the 2nd modification of 1st Embodiment. The front view of the packaging bag which concerns on the various modifications of 1st Embodiment. The front view of the packaging bag which concerns on the various modifications of 1st Embodiment. The front view of the packaging bag which concerns on the 1st example of 2nd Embodiment. However, for the sake of convenience, the shaded area is added to the area where the bonded portion is provided (hereinafter, the shaded area is similarly added to the area where the bonded portion is provided in FIGS. 14 to 16, 18 and 22). ing). The front view of the packaging bag which concerns on the 2nd example of 2nd Embodiment. The rear view of the packaging bag. The front view of the packaging bag which concerns on the 1st example of 3rd Embodiment. The perspective view which shows the state which bent the side part of the bag main body when opening the packaging bag. The front view of the packaging bag which concerns on the 2nd example of 3rd Embodiment. The perspective view which shows the state which bent the side part of the bag main body when opening the packaging bag. The front view of the packaging bag which concerns on 4th Embodiment. The perspective view which shows the state which rolled the cover part of the packaging bag, and opened the outlet. The front view of the packaging bag which concerns on 5th Embodiment. However, for convenience, innumerable dots are added to the range where the masking layer is provided. Sectional drawing cut | disconnected by the XXIII-XXIII line | wire of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In this specification, the horizontal direction and the vertical direction refer to the directionality when the packaging bag is arbitrarily placed on a flat surface and viewed from the normal direction, and the horizontal direction and the vertical direction are within the plane of the bag body. The directions are orthogonal to each other. The plan view shape is a shape when the packaging bag is arbitrarily placed on a flat surface and viewed from the normal direction. Furthermore, the description “A to B” means A or more and B or less.
In the present specification, there are cases where “first”, “second”, and the like are added to the beginning of terms, but the first and the like are added only for distinguishing terms, and the order and It has no special meaning such as superiority or inferiority.
Note that in each cross-sectional view, the size and thickness of each layer is different from the actual product.

[First Embodiment]
1 to 5, a packaging bag 10 of the present invention has a bag body 1 in which a base material is formed in a bag shape, and the bag body 1 is formed from a space for storing items 9 therein. And a take-out port 12 that is formed in a part of the surface of the base material and takes out the stored item 9.
The illustrated bag body 1 is formed, for example, in a substantially rectangular shape in plan view. Here, in this specification, “substantially” in the shape in plan view means a shape allowed in the technical field to which the present invention belongs. The substantially rectangular shape in plan view includes, for example, a shape in which corners are chamfered, a shape in which a part of the side is slightly inflated or depressed, and a shape in which the side is slightly curved.
The bag body 1 has, for example, two base materials A and B (hereinafter, the two base materials may be referred to as a front base material A and a back base material B, respectively) in a state where the stored item 9 is interposed in the center. It is formed by overlapping and adhering the periphery. In such a bag body 1, the two base materials A and B are in contact with each other in a state where the stored item 9 is not interposed, and becomes flat when the stored item 9 is interposed (stored). It has a flattened shape. In addition, the bag main body 1 of the packaging bag 10 of the present invention is not limited to such a form, for example, a gusset bag having a side gusset base material that is folded to the side of the front base material A and the back base material B. It may be an embodiment (not shown).

  The front substrate A and the back substrate B may be separate substrates, or may be composed of the same single substrate. In the illustrated example, the front base material A and the back base material B are composed of the same single base material, and conceptually configure the front surface of the bag body 1 by folding the single base material at the center. The front base material A and the back base material B which comprises the back surface of the bag main body 1 are comprised. Note that the bag body may be configured by folding the same single base material on both side portions and overlapping and bonding the ends of both side portions. Such a bag body has an adhesive portion on its back surface (the form of such a bag body is the same as that of a pillow packaging bag).

The first side of the front substrate A and the first side of the back substrate B, the second side of the front substrate A and the second side of the back substrate B, and the third side of the front substrate A And the third side portion of the back substrate B are bonded to each other. In the present specification, a portion where the substrates are bonded together may be referred to as an “bonded portion”. The bonding method is not particularly limited. When the bonding using an adhesive, the welding using a solvent, and the overlapping surface of the front substrate A and the overlapping surface of the back substrate B are made of a heat-sealable material, For example, heat welding. In FIGS. 2 and 3, shading is added to the range corresponding to the bonded portion.
Accordingly, the first side portion 1a, the second side portion 1b, and the third side portion 1c of the bag body 1 include a portion where two substrates are bonded, and the fourth side portion 1d of the bag body 1 is It consists of a folded part of the material.

As shown in FIGS. 2 to 4, the inner edge of the adhesive portion 81a of the first side portion 1a includes a portion extending linearly. The linearly extending portion extends substantially parallel to the lateral direction (the direction in which the first side portion 1a extends) in plan view. Here, the inner edge of the bonding portion refers to an edge facing the storage portion 11 among the edges of the bonding portion.
The entire inner edge of the bonding portion 81a may extend linearly, or may be composed of a linearly extending portion and a non-linear portion. Examples of the non-linear shape of the inner edge include a substantially arc shape and a substantially bent shape in a plan view.
As will be described later, when the bonding portion 81a is formed by heat sealing, it is preferable to prevent heat from being applied to the knob, so that the inner edge of the bonding portion 81a is a linearly extending portion (linearly extending). An inner edge 811) and a non-linear portion (an inner edge 812 extending non-linearly). Hereinafter, the inner edge extending linearly among the inner edges of the adhesive portion 81a of the first side portion 1a is referred to as a “straight inner edge”, and the inner edge extending in a non-linear manner is referred to as a “non-linear inner edge”.

The straight inner edge 811 and the non-straight inner edge 812 are continuous at each other end, and conceptually, the straight inner edge 811 and the non-linear inner edge 812 are connected to the inner edge of the bonding portion 81a. The non-straight inner edge 812 exists outside the virtual extension straight line Y of the straight inner edge 811 (in other words, in the plane of the first side portion 1a) indicated by a one-dot chain line in FIGS. The virtual extension straight line Y is a virtual straight line that passes through the straight inner edge 811 and extends from the end of the straight inner edge 811.
In the illustrated example, the inner edge of the bonding portion 81 a is composed of one non-linear inner edge 812 and two straight inner edges 811 continuous to both ends of the non-linear inner edge 812. The non-linear inner edge 812 is disposed outside the virtual extension straight line Y, and is formed in a substantially arcuate shape in plan view, similar to the tip of the front-side cut line 41 described later.

The inner edge 821 of the bonding portion 81b of the second side portion 1b and the inner edge 831 of the bonding portion 81c of the third side portion 1c may each independently extend linearly or non-linearly, or You may be comprised from the inner edge extended linearly, and the non-linear inner edge. In the illustrated example, the inner edge 821 of the bonding portion 81b of the second side portion 1b and the inner edge 831 of the bonding portion 81c of the third side portion 1c extend linearly in the vertical direction.
In addition, the 1st side part 1a of the bag main body 1 (and front base material A, back base material B) is arbitrary one side parts (for example, the front base material A, back base material B) (for example, The second side portion 1b and the third side portion 1c are side portions in a direction substantially orthogonal to the first side portion 1a (for example, a side extending in the vertical direction). The fourth side portion 1d is a side portion opposite to the first side portion 1a.

The widths of the first side portion 1a and the fourth side portion 1d of the bag body 1 and the widths of the second side portion 1b and the third side portion 1c are not particularly limited. It is set as appropriate according to the amount of 9. For example, when storing a stack of a plurality of single sheets such as a wet tissue as the storage 9, the width of the first side 1 a and the fourth side 1 d of the bag body 1 is about 50 mm to 200 mm. The widths of the second side portion 1b and the third side portion 1c are set to about 50 mm to 400 mm.
The widths of the first side portion 1a to the fourth side portion 1d are the straight lengths of the respective side portions in the direction in which the side portions extend, and in the illustrated example, the first side portion 1a and the fourth side portion 1d. The widths of the second side portion 1b and the third side portion 1c are the linear lengths in the vertical direction. If the width is not constant at any side, it means the maximum length.

The bonding length of the bonding portions 81a, 81b, 81c in the first to third side portions 1a, 1b, 1c is not particularly limited, but if it is too small, the front base material A and the back base material B may be inadvertently peeled off. If it is too large, a substrate larger than necessary must be used. From such a viewpoint, the bonding lengths of the first to third side portions 1a, 1b, and 1c are preferably about 5 mm to 20 mm independently.
The bonding length of the bonding portions 81a, 81b, 81c of the first to third side portions 1a, 1b, 1c is the linear length of the bonding portion of each side portion in the direction orthogonal to the direction in which each side portion extends. (In the illustrated example, the bonding length of the bonding portion 81a of the first side portion 1a is the length of the straight line in the vertical direction. And the adhesion length of the adhesion parts 81b and 81c of the 3rd side parts 1b and 1c is the linear length of those horizontal directions.

A small piece portion 2 narrower than the width of the side portion is formed on the first side portion 1 a of the bag body 1. The width of the small piece portion 2 is not particularly limited as long as it is smaller than the width of the first side portion 1a. However, if the width is too small, it is difficult to put a finger on the small piece portion 2 when the packaging bag 10 is opened. There is a possibility that the part 2 may be easily bent. From such a viewpoint, the width of the small piece portion 2 is preferably 10 mm to 40 mm, and more preferably 15 mm to 30 mm.
In addition, the width | variety of the small piece part 2 says the linear length of the small piece part 2 in the extension direction of the 1st side part 1a, and when it is not constant, it says the maximum length.
Further, the height of the small piece portion 2 is not particularly limited and is appropriately set. However, if the height is too small, it is difficult to put a finger on the small piece portion 2 when the packaging bag 10 is opened. When the handle is bent, the knob 13 may not be rolled. From such a viewpoint, the height of the small piece portion 2 is preferably 5 mm to 30 mm, and more preferably 7 mm to 20 mm.
In addition, the height of the small piece part 2 says the linear length of the small piece part 2 in the direction orthogonal to the direction where the 1st side part 1a is extended, and when that is not constant, it says the maximum length.

In the present embodiment, the small piece portion 2 is defined by two cuts 3 and 3 formed in the first side portion 1 a of the bag body 1. These two cuts 3 and 3 are each formed from, for example, one cutting line (one line is formed by infinitely forming holes penetrating the front and back surfaces of the side portion in the required direction). Become.
The two cuts 3 and 3 are formed in the adhesive part 81a of the first side part 1a starting from the end of the first side part 1a of the bag body 1 (the outer end of the cut).
The two cuts 3 and 3 are formed so as not to exceed the bonding length of the bonding portion 81 a of the first side portion 1 a of the bag body 1. This is because if the cut 3 is formed beyond the adhesive portion 81a, the sealing performance of the storage portion 11 of the bag body 1 cannot be maintained. By forming the two cuts 3 and 3 in the first side 1a, the portion sandwiched between the cuts 3 is partitioned from the first side 1a. A portion defined by the cut 3 is a small piece 2.

The two cuts 3 and 3 are both formed in a straight line inclined with respect to the lateral direction. For example, the two cuts 3 and 3 are inclined so as to approach each other from the outside toward the tip 3a (the tip of the cut 3 is the end of the two ends of the cut 3 on the bag body 1 side). . Therefore, the small piece part 2 is formed in a substantially inverted trapezoidal shape in plan view as shown in FIGS.
In addition, a suspension hole 29 is formed through the surface of the small piece portion 2 as necessary. The hole portion 29 is formed at, for example, an in-plane center portion of the small piece portion 2.

The outlet 12 is formed in the plane of the front substrate A of the bag body 1. The plan view shape of the outlet 12 is not particularly limited as long as the shape and size allow the stored item to be taken out. In the illustrated example, the outlet 12 is formed in a substantially trapezoidal shape in plan view so that a substantially rectangular sheet in plan view, such as a wet tissue, is sufficiently exposed.
The front substrate A on which the outlet 12 is formed is composed of a laminated film having a front film 4 and a back film 5. In the present embodiment in which the front substrate A and the back substrate B are composed of a single substrate, the back substrate B is also composed of a laminated film having a front film 4 and a back film 5.
The laminated film is composed of a laminate in which the front film 4 and the back film 5 are bonded via the adhesive layer 6, but in order to form the outlet 12, a part of the front film 4 of the front substrate A is formed. The area and a partial area of the back film 5 are bonded so as to be peelable. This region bonded in a peelable manner may be referred to as a “peeling portion”. In FIG. 2, countless dots are added in a range corresponding to the peeling portion.

Specifically, cut lines 41 and 51 are formed in the surface of the front base material A in order to form an outlet 12 communicating with the storage portion 11 on one surface of the bag body 1. A part of the in-plane surface of the bag body 1 (corresponding to the lid portion 14) surrounded by the cut lines 41 and 51 is separated from the bag body 1 to generate the outlet 12.
One score line 41 is formed in the surface of the front film 4 of the front substrate A, and another score line 51 is formed in the surface of the back film 5 of the front substrate A. Hereinafter, the cut line formed in the front film 4 is referred to as “front side cut line 41”, and the cut line formed in the back film 5 is referred to as “back side cut line 51”.

  The shape of the front side cut line 41 is a non-linear shape in plan view, and the shape of the back side cut line 51 is a non-linear shape in plan view shifted from the front side cut line 41. An interlayer between the front film 4 and the back film 5 in a region between the front side cut line 41 and the back side cut line 51 is detachably bonded (a layer in this region is a peeling portion).

The term “removably bonded” refers to bonding with an adhesive force that can be easily peeled off by human power, and includes weak adhesion and pseudo-adhesion. For example, the interlayer (peeling portion) between the front film 4 and the back film 5 in the region between the front side cut line 41 and the back side cut line 51 is weakly bonded or pseudo-bonded.
The weak adhesion is a state where the layers are weakly bonded to each other with a little force and can be bonded again after being peeled once (after releasing the weakly bonded state), Pseudo-adhesion refers to a state where the layers are weakly bonded to such an extent that they can be delaminated with a little force, and are not bonded again after being peeled once (after releasing the weakly bonded state).

  In the present embodiment, the interlayer between the front film 4 and the back film 5 in the region between the front side cut line 41 and the back side cut line 51 is weakly bonded via the adhesive layer 6 and the masking layer 7, The interlayer between the front film 4 and the back film 5 other than the region is strongly bonded via the adhesive layer 6. The adhesive layer 6 is made of, for example, an adhesive.

  Specifically, the base materials A and B constituting the bag body 1 are flexible, and are preferably made of a single wafer that does not substantially allow liquid and air to pass through. In the present specification, the film includes a single wafer generally called a sheet. That is, both a film and a sheet are single wafers, and both are synonymous.

The material of the surface film 4 is not specifically limited, A conventionally well-known thing can be used. Examples of the front film 4 include a synthetic resin film such as a polyethylene terephthalate film, a nonwoven fabric, a foamed resin film, and paper. The surface film 4 is a laminate of two or more kinds of arbitrarily selected films (for example, a laminate in which two or more kinds of synthetic resin films are integrally laminated, or a synthetic resin film and paper are integrally laminated. Laminated body etc.). In the surface film 4, a gas barrier layer and a light barrier layer or a gas barrier layer or a light barrier layer (hereinafter referred to as a gas barrier layer and / or a light barrier layer) are integrated with various films or laminates as described above. The laminated body laminated | stacked on may be sufficient.
The surface film 4 is a synthetic resin film such as a polyethylene terephthalate film, a laminate of two or more types of synthetic resin films, or a gas barrier layer and / or a laminate of these, because it is excellent in processability and can maintain the quality of the stored item 9 well. Alternatively, it is preferable to use a laminate in which a light barrier layer is laminated. In particular, the surface film 4 is preferably a polyethylene terephthalate film or a laminate including one or more layers of this film and another layer because the knob portion 13 has an appropriate rigidity that separates when the small piece portion 2 is bent. . In each sectional view, for convenience, the front film 4 is represented by a single layer structure, but the front film 4 is not limited to a single layer structure.

The surface film 4 may be transparent or non-transparent. Furthermore, the surface film 4 may be subjected to design printing as necessary. When design printing is performed, the design printing layer (not shown) is preferably provided on the back surface of the front film 4 in order to prevent the scratches. However, the design print layer may be provided on the surface of the front film 4.
The thickness of the surface film 4 is not particularly limited, but if it is too small, the knob 13 may be difficult to separate, and if it is too large, the knob 13 may be carelessly separated. From this viewpoint, when a synthetic resin film or a laminate including the same is used as the front film 4, the thickness of the front film 4 is preferably 15 μm to 120 μm, and more preferably 20 μm to 50 μm.

  The material of the back film 5 is not particularly limited, and a film or a laminate as exemplified in the front film 4 can be used. In addition, when the surface film 4 does not have a gas barrier layer and / or a light barrier layer, it is preferable that the back film 5 is a film which has a gas barrier layer and / or a light barrier layer. Moreover, when the surface film 4 has a gas barrier layer and / or a light barrier layer, the back film 5 may not have these layers, or may have these layers. Further, neither the front film 4 nor the back film 5 may have a gas barrier layer and / or a light barrier layer. In each sectional view, for convenience, the back film 5 is represented by a single layer structure, but the back film 5 is not limited to a single layer structure.

Since the bag body 1 can be formed by heat sealing, the back film 5 preferably has a sealant layer. For example, the back film 5 is a single layer of a sealant layer, or a sealant layer and another layer (this other layer is, for example, a synthetic resin film different from the sealant layer) and is integrally laminated. It is preferable to use a laminated body integrally laminated on the outermost surface.
The sealant layer is a layer that can be melted and adhered to each other by heating. Examples of the sealant layer include a general-purpose polyethylene layer or a polypropylene layer.
The back film 5 may be either transparent or non-transparent.
The back film 5 may be subjected to design printing as necessary.
The thickness of the back film 5 is not particularly limited. When a single layer of a sealant layer is used as the back film 5, the thickness of the back film 5 is generally 15 μm to 70 μm, and when a laminate having a sealant layer is used as the back film 5, The thickness of the back film 5 is, for example, 30 μm to 100 μm.
The front film 4 and the back film 5 are laminated and integrated with the adhesive layer 6 except for the peeling portion.

The front side cut line 41 is formed in the surface of the front film 4 of the front substrate A.
The shape of the front side cut line 41 is a non-linear shape with ends having both ends. For example, the front-side cut line 41 has both ends, and is formed in a non-linear shape in plan view that swells from a virtual straight line connecting both ends to the first side 1a side of the bag body 1.
The front-side cut line 41 extends from the first end portion and the second end portion to the first side portion 1a side, and the tip 41a (portion close to the first side portion 1a) extends in the plane of the small piece portion 2. Be present. As described above, the small piece portion 2 is a portion partitioned from the first side portion 1a by the two cuts 3 and 3, and the front end 41a of the front side cut line 41 is the front end 3a and 3a of the two cuts 3 and 3. Is extended to the range of the small piece portion 2 beyond the imaginary line X connecting (see FIG. 1). The degree of the front side cut line 41 extending to the small piece portion 2 is not particularly limited and can be set as appropriate. For example, the length from the tip 41a of the front-side cut line 41 to the virtual line X connecting the tips 3a and 3a of the two cuts 3 and 3 is 1 mm to 10 mm, preferably 2 mm to 5 mm.

In the front film 4, a portion surrounded by the virtual line X connecting the cuts 3 a and 3 a and the front end portion of the front-side cut line 41 becomes the knob portion 13.
The front-side cut line 41 does not reach the outer end of the small piece portion 2 (the outer end of the small piece portion 2 and the inner end of the hole portion when a hole portion is formed in the surface of the small piece portion 2). , Formed in the plane of the small piece portion 2.
In the example of illustration, the front side cut line 41 extended in the surface of the small piece part 2 is formed, for example in planar view substantially arc shape.
In addition, the adhesion part 81a of the 1st side part 1a is provided so that it may not overlap with the said knob | pick part 13, as shown in FIG. That is, the adhesive portion 81a of the first side portion 1a is provided outside the front side cut line 41 (so as not to overlap the front side cut line 41). Therefore, as described above, the inner edge of the adhesive portion 81a of the first side portion 1a has the non-linear inner edge 812, and the front end portion of the front-side cut line 41 extends along the non-linear inner edge 812 or non-linearly. The inner edge 812 is slightly away from the inner edge 812 and is formed in a substantially arc shape in plan view. The front end portion of the front side cut line 41 extends beyond the virtual extension straight line Y and in the plane of the first side portion 1a.

As described above, the bonding portion 81a of the first side portion 1a is formed so as not to overlap the front side cut line 41 for the following reason. When the bag body 1 is formed of a base material, an adhesive portion is formed. However, when a base material having a sealant layer is used, it is easy to form the adhesive portion by heat sealing. And when forming the adhesion part 81a by heat sealing, although a heating bar is applied to the surface of the surface film 4, when heat is applied to the knob | pick part 13, the masking layer 7 etc. which were provided in the back surface of the surface film 4 etc. May deteriorate. Therefore, it is preferable to apply heat so as to avoid the knob 13. For example, it is preferable to heat seal the base using a heating bar having a shape that does not apply heat to the knob 13. In this way, when heat is applied so as to avoid the knob portion 13 to form the bonding portion 81 a, a part of the inner edge (non-linear inner edge 812) of the bonding portion 81 a extends along the front end portion of the front cut line 41. Or slightly away from the front end portion thereof, it is formed in a non-linear shape such as a substantially arc shape.
However, when the adhesive part is formed by a method other than heat sealing, such as adhesion using an adhesive or welding using a solvent, the entire inner edge of the adhesive part 81a of the first side part 1a is formed linearly. May be.

On the other hand, the back side cut line 51 is formed in the surface of the back film 5 of the front substrate A.
The shape of the back side cut line 51 is either an endless non-linear shape having both ends or an endless non-linear shape. The endless non-linear cut line is a cut line having a shape that forms a closed region inside thereof (that is, an annular cut line).
The back side cut line 51 is formed in, for example, a substantially trapezoidal shape (endless non-linear shape) in plan view. However, when the back-side cut line 51 is an endless non-linear shape, the shape is not limited to the substantially trapezoidal shape, and may be a substantially square shape, a substantially triangular shape, a substantially circular shape, a substantially elliptical shape, or the like in plan view (see FIG. Not shown). Similarly to the front side cut line 41, the back side cut line 51 has both end portions, and the non-planar view that swells toward the first side portion 1a side of the bag body 1 from the virtual line connecting the both end portions. It may be formed in a straight line (not shown).
The formation part of the back side cut line 51 and the formation part of the front side cut line 41 do not coincide, and the back side cut line 51 is formed so as to be displaced from the front side cut line 41. That is, the back side cut line 51 is formed away from the front side cut line 41 with the front side cut line 41 as a reference.
The space | interval (namely, space | interval of a peeling part) of the front side cutting line 41 and the back side cutting line 51 is not specifically limited, It can set suitably. However, if the distance is too narrow, the front-side cut line 41 and the back-side cut line 51 communicate with each other, and the sealing performance of the bag body 1 may not be maintained. Considering this point, the interval is preferably 5 mm or more, and more preferably 7 mm or more. Moreover, even if the said space | interval is wide, the effect of this invention does not change, but when the said space | interval is too wide, the part (take-out port 12) enclosed by the back side cut line 51 will become narrow relatively. Considering this point, the interval is preferably 20 mm or less.

Moreover, the masking layer 7 is provided in the area | region between the said front side cutting line 41 and the back side cutting line 51 among the back surfaces of the front film 4. FIG. The masking layer 7 has a function of weakening the adhesive force of the adhesive layer 6.
The masking layer 7 can be formed by applying a material for forming the masking layer 7 and solidifying it. The masking layer 7 forming material is not particularly limited as long as the adhesive force of the adhesive layer 6 can be concealed. For example, a solvent type or emulsion type resin solution containing a synthetic resin as a main component, an ionizing radiation curable resin solution Ink such as ultraviolet curable ink can be used. Among these, since it can be applied by various printing methods and is easily solidified, it is preferable to use a solvent-type ink or an ultraviolet curable ink as a material for forming the masking layer 7, and a solvent-type ink containing no colorant or It is more preferable to use an ink such as an ultraviolet curable ink (so-called medium ink).

The masking layer 7 is provided in a solid shape in the entire region between the front side cut line 41 and the back side cut line 51. The range where the innumerable dots in FIG. 2 are added is also an area where a masking layer is provided. In this specification, that a certain layer is solid means that the material constituting the layer extends in the plane direction to form one continuous layer. However, the masking layer 7 is not limited to be provided in a solid shape, and may be provided in the region in the form of stripes or innumerable dots. Since the masking layer 7 is only required to weaken the adhesive force of the adhesive layer 6, it may be formed in a stripe shape as described above.
The thickness of the masking layer 7 may be substantially uniform or non-uniform throughout. Preferably, the thickness of the masking layer 7 is substantially uniform throughout. The thickness of the masking layer 7 is not particularly limited, but if it is too small, the adhesive force of the adhesive layer 6 may not be sufficiently weakened. From such a viewpoint, the thickness of the masking layer 7 is 0.5 μm to 10 μm, preferably 1 μm to 5 μm.

A sticking layer 6 is provided in a solid shape on the entire surface of the back film 5. However, the sticking layer 6 is not limited to being provided in a solid shape, and may be provided in the form of stripes, innumerable dots, or the like on the entire surface of the back film 5.
The adhesive layer 6 can be formed, for example, by applying a pressure sensitive adhesive, a heat sensitive adhesive, or the like to the back film 5. The pressure-sensitive adhesive has a long-lasting adhesive force and can be re-adhered to the adherend after peeling off from the adherend.
By overlapping the front film 4 on the adhesive layer 6 of the back film 5, the front film 4 and the back film 5 are integrated, but in the region where the masking layer 7 is provided, the masking layer 7 and The adhesive layer 6 is weakly bonded or pseudo-bonded.
The weak adhesion and the pseudo adhesion can be adjusted by appropriately setting the material, thickness, plan view shape, and the like of the masking layer 7. For example, weak adhesion can be achieved by providing the masking layer 7 having a relatively small thickness in a solid shape, or by providing the masking layer 7 in a stripe shape or a dot shape. Further, by providing the masking layer 7 having a relatively large thickness in a solid shape, pseudo adhesion can be achieved.

  In the above, the case where the front film 4 provided with the masking layer 7 on a part of the back surface and the back film 5 provided with the adhesive layer 6 on the entire surface is exemplified, but the present invention is limited to this. (1) The front film 4 provided with the adhesive layer 6 on the entire back surface and the back film 5 provided with the masking layer 7 on a part of the surface are superposed, or (2) the adhesive layer on the entire back surface. 6 and the front film 4 and the back film 5 provided with a masking layer 7 on a part of the back surface of the adhesive layer 6 are overlapped, or the adhesive layer 6 is provided on the entire surface of the front film 4 and the surface. Further, the packaging bag 10 similar to the above can also be obtained by superimposing the backing film 5 provided with the masking layer 7 on a part of the surface of the adhesive layer 6.

The adhesive strength between the front film 4 and the back film 5 adhered by the adhesive layer 6 is not particularly limited as long as the two films cannot be easily peeled off, and is preferably 10 N / 15 mm or more, for example. The upper limit of the adhesive strength is not particularly limited, but is generally 30 N / 15 mm or less.
The said adhesive strength says the value measured by the method according to 180 degree peeling of JISZ0237. Specifically, the adhesive strength is obtained by cutting a surface film 4 and a back film 5 bonded through an adhesive layer 6 into 100 mm × 15 mm, temperature 23 ± 2 ° C., humidity 50 ± 5% RH, 300 mm. The maximum strength when peeled at a rate of / min.

Although the adhesive strength in a peeling part is not specifically limited, When too small, there exists a possibility that the surface film 4 and the back film 5 cannot be weakly bonded, and the sealing performance of the bag main body 1 cannot be ensured. From this viewpoint, the adhesive strength of the peeled portion is preferably 0.2 N / 15 mm or more, and more preferably 1 N / 15 mm or more. On the other hand, when the adhesive strength of the peeled portion is too large, the peeled portion may not peel when a part of the front film 4 (region surrounded by the front cut line 41) is formed to form the outlet 12. is there. From such a viewpoint, the adhesive strength of the peeled portion is preferably 3 N / 15 mm or less.
In addition, the adhesive strength of a peeling part can be measured like the measuring method of the adhesive strength of the said surface film 4 and the back film 5. FIG.

The said packaging bag 10 can be manufactured according to the method currently performed conventionally. Briefly, the base film is produced by superposing the front film 4 provided with the masking layer 7 on a part of the back surface and the back film 5 provided with the adhesive layer 6 on the entire surface. A front-side cut line 41 is engraved on the required portion of the front film 4 of the base material using a cutter blade from the front surface side, and a back-side cut line is used on the required portion of the back film 5 from the back surface side. 51 is engraved. And the packaging bag 10 of this invention can be manufactured by bend | folding a base material so that the storage thing 9 may be wrapped, and piling up the three edge parts in the shape of a palm, and adhere | attaching by heat sealing.
The storage item 9 is not particularly limited, and examples thereof include foods such as sweets, wet tissue, toys, stationery items, cosmetics, and solid medicines.

In the said packaging bag 10, although the front side cut line 41 and the back side cut line 51 are each formed in the front film 4 and the back film 5 which form the bag main body 1, the front side cut line 41 and the back side cut line Since the interlayer between the front film 4 and the back film 5 in the region between 51 is weakly bonded or pseudo-bonded, the sealing performance of the bag body 1 is maintained.
When opening the packaging bag 10, as shown in FIGS. 6 and 7, if the packaging bag 10 is held with one hand and the small piece portion 2 is bent with a finger of the opposite hand, the base portion (cut 3) of the small piece portion 2 is obtained. The small piece 3 is bent with respect to the bag body 1 and the knob 13 including the front end 41a of the front cut line 41 is separated from the bag body 1 (back film 5). . By picking and pulling out this knob portion 13 with a finger, the front film 4 and the back film 5 are peeled at the peeling portion, and the lid portion 14 (the region surrounded by the front cut line 41 in the front film 4) is a bag. A take-out port 12 that leads to the storage space of the bag main body 1 is generated within a range that rises from the main body 1 and is surrounded by the back-side cut line 51 (see FIG. 8). The stored item 9 can be taken out from the outlet 12. In particular, since the front end portion of the front-side cut line 41 is formed in a substantially arc shape (that is, the knob portion 13 has a substantially arc-shaped edge), it is difficult to give a sense of incongruity when the knob portion 13 is picked with a fingertip.

In the packaging bag 10 of the present invention, when the small piece portion 2 is bent, the knob portion 13 which is a part of the lid portion 14 is separated from the bag body 1, so that the lid portion 14 can be easily wound by picking this portion. The outlet 12 can be easily opened.
Since the lid portion 14 is a part of the surface film 4, the packaging bag 10 of the present invention can prevent the lid portion 14 from unintentionally curling, and when opening the lid, the small piece portion 2 is bent as described above to open the lid. The portion 14 can be easily beaten.

In addition, when the said peeling part is weakly adhere | attached, after picking up the cover part 14, this cover part 14 can be returned and the outlet 12 can be resealed.
Moreover, when the said peeling part is pseudo-adhered, after rolling the cover part 14, this cover part 14 cannot be adhere | attached as it was, or adhesion | attachment is difficult. As described above, when the lid 14 is peeled off, it can be easily determined that the cover has been opened once, so that it is possible to easily detect unauthorized opening such as mischief. For this reason, unauthorized opening can be prevented beforehand.

  In addition, the packaging bag of this invention is not restricted to the said embodiment, In the range which this invention intends, it can change suitably. Hereinafter, other embodiments of the present invention will be described. However, in the following description of other embodiments, matters different from those of the above embodiment will be mainly described, and the same configurations and effects as those of the above embodiment may be omitted and terms and symbols may be used. is there.

[Modification of First Embodiment]
In the above embodiment, the cut 3 is formed to be inclined with respect to the horizontal direction, but the present invention is not limited to this. For example, as shown in FIG. You may form in the shape of a straight line in the orthogonal direction. In this case, the small piece portion 2 having a substantially rectangular shape in plan view is formed.
Furthermore, as shown in FIG. 10, the two cuts 3 and 3 may change the direction of the tip portions. For example, as shown in the figure, the tip of the cut 3 is formed in a substantially arc shape in plan view, or the tip of the cut 3 is formed in a substantially V shape, a substantially L shape, etc. in plan view (not shown). By changing the direction of the tip of the cut 3 in this way, the bag body 1 can be prevented from being broken from the tip of the cut 3.
Moreover, as shown to Fig.11 (a), the two cut | interruptions 3 and 3 may be inclined so that it may mutually leave | separate as it goes to the front-end | tip from an outer side (in this case, the small piece part 2 is planar trapezoidal shape in planar view) Formed).

Furthermore, in the said embodiment, although the front-end | tip part (equivalent to the knob | pick part 13) of the front side cut line 41 is formed in planar view substantially arc shape, it is not limited to this, For example, it shows in FIG.11 (b) As shown in FIG. 5C, the front end portion of the front side cut line 41 has a substantially mountain shape in plan view, and the front end portion of the front side cut line 41 has a substantially rectangular shape in plan view as shown in FIG. As shown, the front end of the front side cut line 41 may be formed in a substantially wavy shape in plan view, and the front end of the front side cut line 41 as shown in FIGS. The part may be formed in a substantially bee shape in a plan view (a substantially bee shape is a shape like the tip shape of a shamisen bee) or the like. In FIG. 5E, the front end 41a of the front side cut line 41 is linear, and in FIG. 5F, the front end 41a of the front side cut line 41 is substantially arcuate (preferably arcuate bulging outward). There are some differences.
As shown in (b), (c), (e), and (f) of the figure, when the front-side cutting line 41 has a pointed portion 41c, it begins to drown from that portion when opened. , The knob 13 is easily drowned. In particular, as shown in FIG. 5 (f), when the front end portion of the front-side cut line 41 has portions 41c on both sides of the substantially arc-shaped portion, the knob portion 13 is easy to bend and it is easy to bend at the time of opening. It is preferable because it is difficult to cause a sense of incongruity when picking up the potato.

  In the above embodiment, each of the two cuts 3 and 3 is formed by a single cutting line. For example, as shown in FIG. 12A, each of the cuts 3 and 3 includes two or more continuous cuts. You may be comprised from the notches 31,31. There is a non-cut portion 32 between the small cuts 31, 31, and it can be said that the cut 3 is connected to the small cuts 31, 31 via the non-cut portion 32. The length of the non-cut portion 32 (the distance between the end portions of the adjacent small cuts 31, 31) is not particularly limited, but is, for example, 1 mm to 5 mm. As shown in FIG. 12 (a), when the cut 3 is composed of the small cuts 31 and 31 connected via the non-cutting portion 32, the length of the small cut per one is shortened. The small piece portion 2 is unlikely to be bent inadvertently at the time of distribution, and at the time of opening, the non-cut portion 32 can be easily divided, and the small piece portion 2 can be bent and the knob portion 13 can be wound.

  Furthermore, in the above-described embodiment, the two cuts 3 and 3 are formed from the end of the first side portion 1a. For example, as shown in FIG. 12B, non-cut from the end of the first side portion 1a. The cuts 3 and 3 may be formed while having the portion 33. Although the length (distance from the end of the 1st side part 1a to the edge part of the cut 3) is not specifically limited, For example, they are 1 mm-5 mm. As shown in FIG. 12 (b), even when the cut 3 is formed with the non-cutting portion 33, the small piece portion 2 is not easily bent during distribution of the packaging bag 10, and the uncut portion at the time of opening. 33 can be divided easily, the small piece portion 2 can be bent, and the knob portion 13 can be rolled.

[Second Embodiment]
In the said 1st Embodiment, although the small piece part 2 consists of a part divided from the 1st side part 1a by the notch 3, it is not limited to this, For example, as shown in FIG. 13, the small piece part 2 is a bag main body. You may be comprised from the part divided from the 1st side part 1a by the cutting part 15 formed in the 1st 1st side part 1a.
Specifically, after the first side portions of the front substrate A and the back substrate B are bonded to each other to form a band-shaped bonding portion extending in the lateral direction, the bonding portion is divided into small pieces as shown in FIG. Cut into a desired shape so that the portion 2 protrudes and cut away (that is, the cut portion 15 is formed on the first side 1a). Thus, the small piece part 2 can be defined in the 1st side part 1a by excising an adhesion part.
The small piece portion 2 is formed, for example, in a generally tongue shape in plan view. It is the same as that of the said 1st Embodiment that the front-end | tip of the front side cut line 41 is extended in the surface of this small piece part 2. As shown in FIG.
14 and 15, the small bag portion 2 is formed on the first side by the cutout portion 15 formed on the first side portion 1a of the bag body 1 as in the first example shown in FIG. It is comprised from the part divided from the part 1a.

Similarly to the first embodiment, the packaging bag 10 according to the present embodiment can easily bend the knob 13 that is a part of the lid 14 by bending the small piece portion 2. Furthermore, since the small piece part 2 protrudes from the 1st side part 1a of the bag main body 1, the small piece part 2 becomes easy to understand and it becomes easy to bend the packaging bag 10 of this embodiment.
In addition, the packaging bag 10 shown in FIG.14 and FIG.15 is another form of the pillow packaging bag demonstrated in the said 1st Embodiment. Specifically, the bag body 1 is configured by folding the same single base material on both side portions and overlapping and bonding the ends of both side portions. In the packaging bag 1, an adhesive portion 81e extending in the vertical direction is generated at an intermediate portion between the first side portion 1a and the fourth side portion 1d extending in the horizontal direction. As shown in this embodiment, it is preferable that the small piece part 2 and the knob | pick part 13 are provided in the position facing the adhesion part 81e. For example, it is preferable that part or all of the small piece part 2 and the knob part 13 provided on the front side of the packaging bag overlap with the adhesive part 81e provided on the back side. Since the bonding portion 81e has relatively high rigidity, by providing the small piece portion 2 at a position opposite to the bonding portion 81e, unintentional bending of the small piece portion 4 can be prevented, and the lid portion 14 can be prevented from being accidentally bent. .
Moreover, in FIG. 14, the front side cutting line 41 and the back side cutting line 51 of the planar view shape different from the front side cutting line 41 and the back side cutting line 51 of the said 1st Embodiment are shown in figure. .

[Third Embodiment]
In the said 1st and 2nd embodiment, although the small piece part 2 is provided in the 1st side part 1a of the bag main body 1, it is not limited to this.
For example, as shown in FIG. 16, a part of the front-side cut line 41 extends beyond the straight inner edge 811 or the virtual extension straight line Y of the inner edge 811 into the surface of the first side portion 1a. It may be 10.
Specifically, in this embodiment, the adhesion part 81a of the 1st side part 1a of the bag main body 1 is a strip | belt shape extended in a horizontal direction (no cut | notch and a cutting part are formed). The inner edge of the bonding portion 81a has a linearly extending portion (straight inner edge 811), as in the first embodiment. In the illustrated example, the inner edge of the bonding portion 81 a is composed of a straight inner edge 811 and a non-linear inner edge 812. In this case, the length of the non-linear inner edge 812 is not particularly limited, but is preferably as small as possible since the length of the linear inner edge 811 is relatively increased. From this point of view, the length of the non-linear inner edge 812 is preferably not more than the width of the first side portion 1a × 1/4 times, and more preferably not more than the width of the first side portion 1a × 1/5 times. By relatively increasing the length of the straight inner edge 811, the first side part 1 a is easily bent along the straight inner edge 811.
The length of the non-linear inner edge 812 refers to the straight line length between both ends of the non-linear inner edge 812.

The front end 41a of the front-side cut line 41 extends in the plane of the first side portion 1a beyond the straight inner edge 811 or the virtual extension straight line Y of the inner edge 811.
In the example of illustration, the front-end | tip part (equivalent to the knob | pick part 13) of the front side cut line 41 is extended in the surface of the 1st side part 1a beyond the virtual extension straight line Y. FIG. Although not particularly illustrated, the front end portion of the front-side cut line 41 may extend in the plane of the first side portion 1 a beyond the straight inner edge 811.
In addition, the packaging bag 10 shown in FIG. 16 has illustrated the form of the pillow packaging bag shown in FIG. 14 as the bag main body 1, and the thing shown in FIG.

  When opening the packaging bag 10 of the present embodiment, as shown in FIG. 17, when the packaging bag 10 is held with one hand and the first side 1 a is bent with the finger of the opposite hand, it substantially follows the straight inner edge 811. Thus, the first side portion 1a is bent with respect to the bag body 1, and the knob portion 13 including the tip of the front side cut line 41 in the front film 4 is separated from the bag body 1 (back film 5). By picking and pulling the knob 13 with a finger, the outlet 12 can be easily opened as in the first embodiment. Since the bonding portion 81a, which is a portion where the two substrates are bonded, is harder than the portion of the bag body 1 excluding the bonding portion (the portion of the bag body 1 that constitutes the storage portion), the first side portion 1a bends at the boundary between the first side portion 1a including the adhesive portion 81a and the portion of the bag body 1 constituting the storage portion. Since there is a space between the first side portion 1a and the end portion of the stored item 9 inside the bag main body 1, the first side portion 1a can be easily bent without being bent at the boundary. It becomes like this.

  Furthermore, in this embodiment, for example, as shown in FIG. 18, a folding auxiliary line 39 may be formed on the bag body 1 corresponding to the straight inner edge 811 or the vicinity of the straight inner edge 811. In this case, a part of the front side cut line 41 extends in the plane of the first side portion 1a beyond the bending auxiliary line 39. The folding auxiliary line 39 is preferably formed linearly in the direction in which the first side portion 1a extends.

As the auxiliary bending line 39, a perforated line as shown in the figure is representatively exemplified, but a half cut line, a push line, or the like may be used. The perforation line is formed by intermittently forming through holes penetrating the front and back surfaces of the first side portion 1a, and the half-cut line is cut in the thickness direction on the surface of the front substrate or the back substrate. It is a substantially V-shaped line, and the push line is a concave line formed by pushing the surface of the front substrate or the back substrate in the thickness direction.
When a perforation line or a half-cut line is used as the folding auxiliary line 39, the folding auxiliary line 39 is located near the upper side of the straight inner edge 811 (straight line) in order to maintain the sealing performance of the storage portion 11 of the bag body 1. It is provided in the vicinity of the inner edge 811 and in the range overlapping with the bonding portion 81a.
Further, the folding auxiliary line 39 is not formed over the entire width of the first side part 1a, and is formed excluding at least the lid part 14 (a part of the front film 4 surrounded by the front side cut line 41). Preferably, as shown in the figure, the cover 14 is formed except for the vicinity of the second side 1b and the vicinity of the third side 1c. In the illustrated example, the folding auxiliary lines 39 are formed at two locations in the lateral direction corresponding to the two straight inner edges 811. The front end of the front-side cut line 41 extends in the plane of the first side portion 1 a beyond the virtual extension line of the bending auxiliary line 39.

  In the illustrated example, the folding auxiliary line 39 is formed in the vicinity of the upper part of the straight inner edge 811, but may be formed in the vicinity of the lower part of the straight inner edge 811, or the straight inner edge. 811 may be formed correspondingly (not shown). The upper vicinity includes, for example, a range within 3 mm (preferably within 2 mm) upward from the straight inner edge 811, and the lower vicinity includes, for example, within 3 mm (preferably within 2 mm) downward from the straight inner edge 811. Includes range.

  When opening the packaging bag 10 of the present embodiment, as shown in FIG. 19, if the packaging bag 10 is held with one hand and the first side 1 a is folded with the finger of the opposite hand, The 1st side part 1a and the bag main body 1 bend, and the knob | pick part 13 including the front-end | tip of the front side cut line 41 among the surface films 4 leaves | separates from the bag main body 1 (back film 5). By pulling out and pulling out this knob 13 with a finger, the outlet 12 can be easily opened.

[Fourth Embodiment]
The outlet 12 of the packaging bag 10 may be formed in a plan view shape so as to cover two corners of a substantially rectangular sheet in plan view such as a wet tissue. For example, as shown in FIGS. 20 and 21, the two corners on the edge of the outlet 12 correspond to the two corners of a substantially rectangular sheet (not shown) in plan view that is a stored item. The covering piece parts 59 and 59 which cover a part may be provided in a row. By providing such covering piece portions 59, 59, it becomes easy to take out the sheets one by one from a stack (storage) of a plurality of sheets. In addition, the covering piece part 59 is not limited to the case where it covers two corners of the stored item, and the covering piece part 59 at one place or two or more places can be stored by appropriately setting the shape of the back-side cut line 51. It can also be formed so as to cover at least one place selected from corners or / and sides of the object.

[Fifth Embodiment]
In the said embodiment, in order to form a peeling part, the masking layer 7 is entirely formed in the area | region between the front side cut line 41 and the back side cut line 51 among the back surfaces of the front film 4 (or the back surface of the back film 5). However, as described above, the masking layer 7 may be provided in a stripe shape, an infinite number of dot shapes, or the like. By providing the masking layer 7 in a shape other than a solid shape such as a stripe shape or innumerable dots, the front film 4 and the back film 5 are strongly bonded to each other through the adhesive layer 6 in a region having no masking layer. In the case where the adhesive layer 6 is formed of a pressure-sensitive adhesive, the front film 4 and the back film 5 can be re-adhered after peeling in a region having no masking layer. Thus, by providing the masking layer 7 other than the solid shape, the front film 4 and the back film 5 in the region where the masking layer 7 is provided are weakly bonded or pseudo-bonded, and the surface in the region where the masking layer is not provided. The film 4 and the back film 5 are strongly bonded and can be reattached. For this reason, by providing the masking layer 7 in a shape other than a solid shape, the cover film 14 is prevented from being inadvertently swollen by preventing the surface film 4 from being inadvertently peeled off at the peeling portion, and after opening, the masking layer Since the front film 4 and the back film 5 are sufficiently bonded via the adhesive layer 6 in the region where no cover is provided, the lid portion 14 can be returned to its original position and reliably sealed. In addition, once the lid 14 is opened, the area where the masking layer is not provided becomes white turbid by the adhesive constituting the adhesive layer 6, so that it can be visually judged that the opening has been opened. Can easily detect the presence or absence of.
When the total area of the region where the masking layer 7 is provided is made smaller than the total area of the region where the masking layer 7 is not provided, the region that is relatively weakly bonded or pseudo-adhered becomes smaller, and the total area is the total area. When the area is increased, the area for strong adhesion is reduced. In consideration of the ease of opening the lid and the ease of resealing, the shape of the masking layer 7 in plan view, its arrangement and size, etc. that are not solid are set.

For example, when the masking layer 7 is provided in a stripe shape, (1) the masking layer 7 has a band shape in a plan view extending in one direction, and a plurality of the masking layers 7 are spaced apart in a direction perpendicular to the direction. Formed side by side, or (2) A region having no masking layer is formed as a belt-like region in plan view extending in one direction, and a plurality of the belt-like regions are formed side by side in a direction perpendicular to the direction. In addition, the masking layer 7 is formed in a region other than the region having no masking layer.
22 and 23 show the packaging bag 10 in which the masking layer 7 is formed in the arrangement (2). In FIG. 22, countless dots are added to the area where the masking layer is provided.
In this illustrated example, a plurality of masking layers 7 having a band shape in plan view extend in the vertical direction (a direction orthogonal to the direction in which the first side portion 1a extends) and are arranged in parallel at predetermined intervals in the horizontal direction. Further, the region 71 where no masking layer is provided extends in the longitudinal direction in the shape of a band in plan view, and is disposed between the adjacent band-shaped masking layers 7. In FIG. 22, a white background surrounded by countless dots is a region 71 where no masking layer is provided. Note that a masking layer 7 is provided around the lid portion 14 (peeling portion) so that the lid portion 14 can be easily rolled at the start of opening.

  The masking layer 7 may be provided with a constant width in the vertical direction as in the present embodiment, or may be provided with the width changed. For example, in the case where the masking layer 7 is provided in a stripe shape, by providing the masking layer 7 so as to gradually become narrower in the vertical direction from the first side portion 1a side, the tip of the knob portion 13 at the initial stage of opening. Becomes easier to peel off, and the resealability of the lid 14 can be secured.

[Other Embodiments]
In each said embodiment, although the back substrate B is comprised by the laminated | multilayer film which has the surface film 4 and the back film 5 similarly to the front substrate A, the back substrate B is a layer with the front substrate A. Separate laminated films having different configurations may be used, or a single layer film (not shown) may be used.
Furthermore, in each said embodiment, although the adhesive is used as the adhesion layer 6, it is not limited to this, For example, as shown to patent document 1, even if it uses a heat sensitive adhesive as the adhesion layer 6, it is. Good. As a method of bonding the front film 4 and the back film 5 using a heat-sensitive adhesive and forming a pseudo-bonded peeling portion, the method described in Patent Document 1 can be used as appropriate.
In addition, two or more embodiments selected from the above various embodiments may be appropriately combined, or one or two or more configurations selected from the above various embodiments may be replaced with other embodiments. May be. For example, the configuration shown in the fifth embodiment may be combined with the third embodiment, and a part of the configuration shown in the second embodiment may be replaced with a part of the configuration of the third embodiment. Good.

DESCRIPTION OF SYMBOLS 1 Bag main body 1a Side part 81a Adhesive part 811 Inner edge which extends linearly of an adhesive part 12 Taking out port 13 Picking part 14 Cover part 2 Small piece part 3 Cut 4 Front film 5 Back film 41 Front side cut line 51 Back side cut line 9 Storage Item 10 Packaging bag

Claims (4)

A bag body in which a base material is formed in a bag shape, and has a bag body in which an outlet for taking out stored items is formed in the surface of the base material.
The substrate on which the outlet is formed is composed of a laminated film having a front film and a back film,
A front-side cut line that is non-linear in plan view is formed in the surface of the front film, and a back-side cut line that is non-linear in plan view is shifted in position from the front-side cut line in the surface of the back film. In the packaging bag that is formed and is peelably bonded between the front film and the back film in the region between the front side cut line and the back side cut line,
A small piece part narrower than the side part is formed on one side part of the bag body,
A packaging bag in which a part of the front side cut line extends in a plane of the small piece portion.   The packaging bag according to claim 1, wherein the small piece portion includes a portion partitioned from the side portion by a cut or cut portion formed in one side portion of the bag body. A bag body in which a base material is formed in a bag shape, and has a bag body in which an outlet for taking out stored items is formed in the surface of the base material.
The substrate on which the outlet is formed is composed of a laminated film having a front film and a back film,
A front-side cut line that is non-linear in plan view is formed in the surface of the front film, and a back-side cut line that is non-linear in plan view is shifted in position from the front-side cut line in the surface of the back film. In the packaging bag that is formed and is peelably bonded between the front film and the back film in the region between the front side cut line and the back side cut line,
One side portion of the bag body includes an adhesive portion bonded by overlapping a part of the base material, and an inner edge of the adhesive portion has a portion extending linearly,
A packaging bag in which a part of the front side cut line extends in the plane of the side part beyond the linearly extending inner edge or a virtual extension straight line of the inner edge.   4. The packaging bag according to claim 3, wherein a folding auxiliary line is formed in the bag body corresponding to the linearly extending inner edge or the vicinity of the inner edge.

Images