JP2014213910A - Resealable packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resealable packaging bag having a top surface which has a take-out port and is formed as one flat surface, and relatively easily producible.SOLUTION: A packaging bag includes a bag body 10, and a backing sheet 20. The bag body 10 has a lid flap 12 formed by providing a notch 11 in a top surface, and a take-out port 13 appearing when the lid flap 12 is raised. The backing sheet 20 is arranged inside the bag body 10, and has a base material layer, and an adhesive layer stuck to the reverse side of the top surface of the bag body 10 so that the base material layer is protruded inward from the inner edge of the take-out port 13. This allows a part of the lid flap 12 to be stuck to a part of the adhesive layer when the take-out port 13 is closed by the lid flap 12.

Description

  The present invention relates to a packaging bag for packaging articles such as confectionery and wet tissue. More specifically, the present invention relates to a packaging bag capable of resealing a product outlet.

  Generally, various articles represented by foods such as confectionery and hygiene items such as wet tissue are stored in flexible packaging bags. The packaging bag has a structure for hermetically sealing the inside of the bag so as to maintain the sanitary condition of the inside and prevent the article from being damaged while having an outlet for the article. A typical example of such a flexible packaging bag is a pillow packaging bag having a laminated film having a sealant film. However, the pillow packaging bag has a problem that it is difficult to reseal once it is opened. If the packaging bag cannot be resealed, airtightness inside the bag cannot be secured, and dust and dust may be mixed into the bag, which is inconvenient. For this reason, conventionally, a packaging bag that can be easily resealed even after it is once opened and an internal article is taken out has been proposed (Patent Document 1, Patent Document 2, etc.).

  For example, Patent Document 1 discloses a resealable packaging bag having a so-called half-cut flap. In the packaging bag of Patent Document 1, the top surface of the bag body is formed by two sheets laminated with a pressure-sensitive adhesive or the like. First, a cut is formed only in the front sheet so that the sheet placed on the front side is cut while the back sheet is not cut. In addition, while cutting the back side sheet, the front side sheet is not cut, and a cut is also formed in the back side sheet at a position shifted from the cut of the front side sheet. As described above, the packaging bag of Patent Document 1 has a lid flap on the top surface of the bag body by performing a so-called half cut by cutting only one of the front side sheet and the back side sheet in a stacked state. The outlet is formed, and the outlet can be resealed by the lid flap.

  Patent Document 2 discloses a resealable packaging bag having a lid label for covering an outlet formed on the top surface of the bag body. In the packaging bag of Patent Document 2, the bag body and the lid label are formed separately. And the lid formed on the top surface of the bag body can be resealed by overlaying and bonding the lid label on the top surface of the bag body.

JP 2008-265876 A JP-A-9-150872

  However, first, in the packaging bag having the half-cut type flap disclosed in Patent Document 1, it is necessary to perform half-cutting to cut only one of the two laminated sheets, so that the manufacture is compared. It was considered difficult. That is, when trying to manufacture the packaging bag of Patent Document 1, it is necessary to accurately cut only one of the stacked thin sheets, and it is difficult to adjust the pressure applied to the cutting blade. For this reason, there is a high possibility that an error will occur in which both of the two stacked sheets are cut, and the defective product in which both of the two sheets are cut has a sufficient sealing property in the packaging bag. The problem of being unable to secure was occurring.

  Further, in the case of a packaging bag having a lid label separate from the bag disclosed in Patent Document 2, it is necessary to overlap the lid label on the top of the bag and paste it. There was a problem that it could not be made flat. For example, the top surface of the bag is the most visible part for consumers, so in order to promote the product to consumers, the product name and product are promoted on the entire top surface. There is a strong demand for symbols. However, when the lid label is pasted on the top surface as in the bag body of Patent Document 2, the lid label covers the top surface, so that it is difficult to display the product name and design on the entire top surface. There was a bug. In addition, if a lid label is pasted on the top surface, a step will be created at the top of the bag, so this lid label may be caught by something when transporting packaging bags or displaying them on product shelves. There was also a problem that it was easy to peel off.

  For this reason, at present, the top surface on which the outlet is formed can be made flat, and a resealable packaging bag that can be manufactured relatively easily without requiring precise control of the processing equipment. Is required.

Accordingly, the inventors of the present invention have intensively studied the means for solving the above-mentioned problems of the conventional invention, and as a result, provided a notch such as a substantially U-shape on the top surface of the bag body constituting the packaging bag, and the lid flap. The back surface of the bag body is flattened when the lid flap is closed by attaching a backing sheet to which the lid flap is bonded to the back side of the top surface of the bag body. It was also found that a re-sealable packaging bag can be manufactured by a relatively simple process of pasting a backing sheet on the back side of the top surface of the bag body. The inventor has conceived that the problems of the prior art can be solved based on the above knowledge, and has completed the present invention.
More specifically, the present invention has the following configuration.

The present invention relates to a resealable packaging bag.
The packaging bag of the present invention includes a bag body 10 and a backing sheet 20.
The bag body 10 has a lid flap 12 and an outlet 13.
The lid flap 12 is formed by providing a cut 11 on the top surface. The outlet 13 is an opening that appears on the top surface of the bag body 10 by lifting the lid flap 12. That is, the lid flap 12 can open and close the outlet 13 freely.
Further, the backing sheet 20 is disposed inside the bag body 10 and has a base material layer 21 and an adhesive layer 22. The adhesive layer 22 is bonded to the back side of the top surface of the bag body 10 so that the base material layer 21 protrudes inside the inner edge of the outlet 13 of the bag body 10.
Thus, in the packaging bag of the present invention, when the outlet 13 is closed by the lid flap 12, a part of the lid flap 12 adheres to a part of the adhesive layer 22. As a result, the packaging bag of the present invention can open and close the outlet 13 repeatedly using the lid flap 12.

  As in the above configuration, in the packaging bag of the present invention, the lid flap 12 is formed by providing the notch 11 on the top surface of the bag body 10, so the lid flap 12 is integrated with the bag body 10. Yes. For this reason, when the top surface outlet 13 is closed by the lid flap 12, the top surface of the bag body 10 is a flat surface. Therefore, the packaging bag of the present invention makes it easy to draw a product name and a pattern on the entire top surface of the bag body, and can prevent the lid flap 12 from being peeled off at an unintended timing. Furthermore, in the present invention, the lid flap 12 is resealed by the backing sheet 20 that is separate from the bag body 10. For this reason, when manufacturing the packaging bag of the present invention, it is not necessary to perform the processing that requires relatively precise control such as the above-described half cut, so that the packaging bag can be easily manufactured and the generation of defective products is reduced. It is possible to improve the non-defective product shipment rate.

The packaging bag of the present invention preferably further includes an adhesive seal 30 attached to the tip of the lid flap 12.
Here, the adhesive seal 30 preferably has a seal support 31, an adhesive layer 32, a perforation 33, and a separation piece 34.
The seal support 31 can be divided into an extension part 31 a extending from the front end edge of the lid flap 12 and a fixing part 31 b fixed to the lid flap 12.
The adhesive layer 32 is formed over the extending portion 31a and the fixing portion 31b of the seal support 31.
The perforation 33 is formed in the extending portion 31 a of the seal support 31.
The separation piece 34 is separated from the seal support 31 by breaking the perforation 33. That is, the separation piece 34 is a part of the seal support 31. Accordingly, in the packaging bag of the present invention, when the lid flap 12 is lifted, the separation piece 34 is separated from the seal support 31 and the bag. It remains on the top surface of the body 10.

  As described above, the packaging bag according to a preferred embodiment of the present invention has a tamper-proof function. That is, as described above, the adhesive seal 30 is attached to the front end portion of the lid flap 12, and a part of the adhesive seal 30 is fixed to the top surface of the bag body 10 before the packaging bag is opened. . A perforation 33 is formed in a portion of the adhesive seal 30 that is fixed to the top surface of the bag body 10. Therefore, when the lid flap 12 is lifted and the outlet 13 is opened, a part of the adhesive seal 30 is broken along the perforation 33, and the broken part (separation piece 34) is the top surface of the bag body 10. Will remain. This makes it easy to determine whether the packaging bag has already been opened or has not yet been opened, depending on whether a part of the adhesive seal 30 (separation piece 34) remains on the top surface. Will be able to judge. As a result, a falsification preventing function is imparted to the packaging bag of the present invention.

  In the packaging bag of the present invention, the seal support 31 of the adhesive seal 30 preferably has a knob 35 where the adhesive layer 32 is not formed.

  As described above, by providing the knob support 35 (non-adhesive part) on the seal support 31 of the adhesive seal 30, the knob 35 of the adhesive seal 30 can be held and the lid flap 12 can be opened. become able to. Further, the provision of such a knob 35 makes it easy to open the lid flap 12. Further, by forming the knob portion 35 in the extending portion 31 a of the seal support 31, the seal support 31 can be easily broken along the perforation 33, and as a result, the separation piece 34 is attached to the seal support 31. It becomes easy to separate from the main body.

  INDUSTRIAL APPLICABILITY The present invention can provide a resealable packaging bag in which a top surface having an outlet is formed as a flat surface and can be manufactured relatively easily.

FIG. 1 is an external perspective view showing an example of a packaging bag according to the present invention. 2 is a cross-sectional view of the packaging bag along the line AA shown in FIG. FIG. 3 is an enlarged perspective view showing the adhesive seal extracted. FIG. 4 shows an operation example of an adhesive seal having a tamper-proof function. Fig.3 (a) has shown the state before opening of a packaging bag. FIG.3 (b) has shown the state after opening of a packaging bag.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, but includes those appropriately modified by those skilled in the art from the following embodiments.
In this specification, “A to B” means “A to B”.

  FIG. 1 is a perspective view showing an appearance of a packaging bag 100 according to an embodiment of the present invention. In FIG. 1, the backing sheet 20 included in the packaging bag 100 is schematically indicated by oblique lines surrounded by a broken line. As shown in FIG. 1, a packaging bag 100 includes a bag body 10 for storing articles such as confectionery and wet tissue, and a reseal function of the bag body 10 disposed inside the bag body 10. A backing sheet 20 and an adhesive seal 30 that is attached to the top surface of the bag body 10 and realizes a tamper-proof function are provided.

  As shown in FIG. 1, the bag body 10 has a substantially square or flat shape so that articles such as confectionery and wet tissue can be stored. The bag body 10 has a top surface, a bottom surface facing the top surface, and a side surface that connects the top surface and the bottom surface, and the top surface, the bottom surface, and the side surface form an article storage space. The bag 10 for containing confectionery, wet tissue or the like is preferably formed of a liquid-impermeable film having airtightness. Thereby, it can prevent that the taste, flavor, texture, etc. of a confectionery fall by oxygen, a water | moisture content, etc. entering in the bag body 10. FIG. On the other hand, when the contents are wet tissue, it is possible to prevent the contents from drying and the active ingredients from evaporating. Further, dust and dust are prevented from entering the bag body 10. Liquid-impermeable films with airtightness include plastic films such as polyethylene, polypropylene, polyester, polyamide, vinyl chloride, vinylidene chloride, cellophane, or acetate, and laminated films composed of a combination of two or more of these films. Or the composite film and aluminum vapor deposition film which further laminated | stacked aluminum foil on this laminated film are mentioned.

  Further, as shown in FIG. 1, a cut 11 is formed in the top surface of the bag body 10. The notch 11 here is a concept including both continuous cutting lines and intermittent perforation lines. In FIG. 1, an example in which the cut 11 is a continuous cutting line is drawn. As shown in FIG. 1, the cut 11 is preferably formed in, for example, a substantially U-shape. However, the notch 11 may be substantially L-shaped or substantially semicircular. That is, the notch 11 is not for completely cutting out the top surface of the bag body 10, but can be appropriately employed in any form as long as it is partially cut off. . By providing such a cut 11 on the top surface of the bag body 10, the lid flap 12 defined by the cut 11 is formed. The lid flap 12 is a part of the bag body 10, and is integrally connected to the main body of the bag body 10 at a portion where the cut 11 is interrupted. Further, by forming the notch 11 in the top surface of the bag body 10, an outlet 13 such as confectionery or wet tissue is formed at that portion. That is, the outlet 13 is an opening that appears on the top surface of the bag body 10 by lifting the lid flap 12.

  FIG. 2 shows a cross-sectional view of the packaging bag 100. FIG. 2 shows a state where the lid flap 12 is lifted. Further, in FIG. 2, in order to show each element constituting the packaging bag 100 in an easy-to-understand manner, it is drawn with a conceptual thickness, but each element constituting the packaging bag 100 is originally a thin film-like shape. It is a member.

  As shown in FIG. 2, a backing sheet 20 is disposed inside the bag body 10. The backing sheet 20 is a sheet-like member to which the lid flap 12 is bonded so that the lid flap 12 that seals the outlet 13 can be repeatedly opened and closed. The backing sheet 20 is bonded to the back side of the top surface of the bag body 10 so that at least a part thereof protrudes inside the inner edge of the outlet 13 of the bag body 10. For example, in the embodiment shown in FIG. 1, the backing sheet 20 is formed along the inner periphery of the entire periphery of the outlet 13 of the bag body 10, and inside the inner periphery of the entire periphery of the outlet 13. It is arranged to protrude. That is, in the embodiment of FIG. 1, the backing sheet 20 is formed in an annular shape having an opening 23 in the central portion. Further, as shown in FIG. 2, in the state where the backing sheet 20 is bonded to the back side of the bag body 10, the opening 23 of the backing sheet 20 and the outlet 13 of the bag body 10 form one opening. It has been communicated to. For this reason, the articles contained in the bag body 10 can be taken out through the opening 23 of the backing sheet 20 and the outlet 13 of the bag body 10. Further, when the lid flap 12 of the bag body 10 is closed, the lid flap 12 is adhered to a portion of the backing sheet 20 that protrudes inward from the inner edge of the outlet 13 of the bag body 10. . In this way, by adhering the lid flap 12 to the backing sheet 20, the outlet 13 of the bag body 10 can be resealed.

  As shown in FIG. 2, the backing sheet 20 basically includes a base material layer 21 and an adhesive layer 22. The base material layer 21 is a film member that forms the outer shape of the backing sheet 20. The base material layer 21 may be a film made of a plastic resin such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyamide (PA), polycarbonate (PC), polyethylene terephthalate (PET). However, it may be a non-woven fabric, paper, or a base material using an SMS non-woven fabric. The thickness of the base material layer 21 may be, for example, 1 μm to 15 μm or 2 μm to 10 μm. The adhesive layer 22 is, for example, a layer formed by applying an adhesive to the base material layer 21. As the adhesive for forming the adhesive layer 22, it is preferable to employ an adhesive that can be repeatedly bonded. For example, the pressure-sensitive adhesive is preferably used as the adhesive. For example, a natural rubber-based pressure-sensitive adhesive may be used. In addition, the adhesive may be a hot-melt pressure-sensitive adhesive or an acrylic pressure-sensitive adhesive. As the acrylic pressure-sensitive adhesive, for example, a known one obtained by copolymerizing a monomer component mainly composed of an acrylate ester with a monomer component having a functional group such as a carboxyl group or a hydroxyl group can be used. The adhesive layer 22 may be formed by bonding a double-sided tape to the base material layer 21.

  As shown in FIG. 2, the backing sheet 20 having the base material layer 21 and the adhesive layer 22 is attached by the adhesive layer 22 at a position protruding further inside than the inner edge of the outlet 13 of the bag body 10. Yes. That is, the backing sheet 20 has the adhesive layer 22 bonded to the back side of the top surface of the bag body 10. Therefore, the adhesive layer 22 of the backing sheet 20 faces upward at the portion where the backing sheet 20 protrudes from the inner edge of the outlet 13, and faces the lid flap 12 of the bag body 10. In this way, the lid flap 12 can be repeatedly attached to and detached from the adhesive layer 22 of the backing sheet 20. For example, the length of the portion of the backing sheet 20 that protrudes from the inner edge of the outlet 13 may be about 1 mm to 30 mm, 5 mm to 25 mm, or 10 mm to 20 mm.

  As shown in the perspective view of FIG. 1 and the cross-sectional view of FIG. 2, an adhesive seal 30 is attached to the distal end portion of the lid flap 12 of the bag body 10. In the present embodiment, the adhesive seal 30 is preferably configured as a separate body from the bag body 10. The adhesive seal 30 lifts the lid flap 12 of the bag body 10 to make it easier to open the outlet 13, displays that the bag body 10 has been opened once, and recloses the bag body 10 once opened. It has a function to prevent tampering.

  FIG. 3 is an enlarged perspective view showing the inside of the broken line frame shown in FIG. 2, and shows a specific configuration of the adhesive seal 30. As shown in FIG. 3, the adhesive seal 30 basically includes a seal support 31 and an adhesive layer 32. The seal support 31 is a film member that forms the outer shape of the adhesive seal 30. The seal support 31 may be a film made of a plastic resin such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyamide (PA), polycarbonate (PC), polyethylene terephthalate (PET). However, it may be a non-woven fabric, paper, or a base material using an SMS non-woven fabric. The thickness of the seal support 31 may be, for example, 1 μm to 15 μm or 2 μm to 10 μm. The adhesive layer 32 is a layer formed by applying an adhesive to the seal support 31, for example. For example, the pressure-sensitive adhesive is preferably a pressure sensitive adhesive. For example, a natural rubber-based pressure-sensitive adhesive may be used. In addition, as an adhesive, a hot-melt adhesive or an acrylic adhesive may be sufficient. As the acrylic pressure-sensitive adhesive, for example, a known one obtained by copolymerizing a monomer component mainly composed of an acrylate ester with a monomer component having a functional group such as a carboxyl group or a hydroxyl group can be used. The adhesive layer 32 may be formed by bonding a double-sided tape to the seal support 31.

  As shown in FIG. 3, the seal support 31 is divided into an extended portion 31 a that extends from the front end edge of the lid flap 12 and a fixed portion 31 b that is fixed to the front end portion of the lid flap 12. The adhesive layer 32 is formed on both the extension part 31a and the fixing part 31b of the seal support 31. For this reason, in a state where the outlet 13 is closed by the lid flap 12, the seal support 31 is bonded to the top surface of the bag body 10 via the adhesive layer 32 formed on the extending portion 31a. . Further, the seal support 31 is fixed to the tip end portion of the lid flap 12 of the bag body 10 through an adhesive layer 32 formed on the fixing portion 31b. Here, it is preferable that the extending portion 31 a of the seal support 31 is freely detachable from the top surface of the bag body 10. On the other hand, the fixing portion 31 b of the seal support 31 is preferably firmly fixed to the lid flap 12 of the bag body 10. Therefore, the adhesive strength may be different between the adhesive layer 32 formed on the extending portion 31a of the seal support 31 and the adhesive layer 32 formed on the fixing portion 31b. That is, it is preferable that the adhesive strength of the adhesive layer 32 formed on the fixing portion 31b of the seal support 31 is stronger than the adhesive strength of the adhesive layer 32 formed on the extending portion 31a. As described above, the strength and weakness of the adhesive strength can be imparted by changing the kind and amount of the adhesive layer 32 to be applied between the extending portion 31a and the fixing portion 31b of the seal support 31. However, as a matter of course, the same type of adhesive can be used in the same amount for the extending portion 31 a and the fixing portion 31 b of the seal support 31.

  As shown in FIG. 3, a perforation 33 is formed in the extending portion 31 a of the seal support 31. The perforation 33 is formed through the seal support 31 and the adhesive layer 32. The perforation 33 is provided, for example, in order to cut off a corner portion on the tip end side of the seal support 31, and is curved in a substantially U shape to reach the outer edge of the seal support 31. For this reason, by breaking the extension part 31a of the seal support 31 along the perforation 33, the main body of the extension part 31a and the separation piece 34 which is a part of the extension part 31a are separated. It has become. That is, the separation piece 34 is a portion surrounded by the outer edge of the extending portion 31 a of the seal support 31 and the perforation 33.

  Further, as shown in FIG. 3, the extending portion 31 a of the seal support 31 is provided with a knob 35 (non-adhesive portion) where the adhesive layer 32 is not formed. The knob 35 is formed so as to extend at the tip of the seal support 31. As shown in FIG. 3, the knob 35 is preferably formed to extend beyond the separation piece 34 at a position adjacent to the separation piece 34. The knob 35 is preferably formed so that the outer edge of the knob 35 is positioned on the extension line of the perforation 33. Thus, when the outer edge of the knob 35 is located on the extension line of the perforation 33, the perforation 33 is easily broken when the knob 35 is gripped and lifted upward.

  FIG. 4 shows an operation example of the lid flap 12 and the adhesive seal 30. First, FIG. 4A shows a state before the lid flap 12 is opened. In such a state before opening, the adhesive seal 30 attached to the front end portion of the lid flap 12 is in a state in which the extending portion 31 a is adhered to the top surface of the bag body 10. In addition, the perforation 33 formed in the adhesive seal 30 is not broken before opening.

  On the other hand, FIG. 4B shows a state in which the adhesive seal 30 is lifted and the lid flap 12 is opened. As shown in FIG. 4B, when the knob 35 of the adhesive seal 30 is gripped and lifted, the perforation 33 formed in the adhesive seal 30 is broken and separated from the seal support 31. Is separated. As a result, the separation piece 34 separated from the seal support body 31 remains on the top surface of the bag body 10. When the adhesive seal 30 is lifted, the lid flap 12 to which the adhesive seal 30 is fixed is also lifted. Thereby, the take-out port 13 closed by the lid flap 12 appears on the top surface of the bag body 10. Therefore, as shown in FIG. 4B, once the lid flap 12 is opened, the separation piece 34 is separated from the seal support 31 of the adhesive seal 30, so that the lid flap 12 is opened. This fact can be confirmed at a glance. On the other hand, as shown in FIG. 4A, if the separation piece 34 is not separated from the seal support 31, the fact that the lid flap 12 has never been opened can be displayed. It is possible to prevent tampering such as once opening and closing the lid flap 12 again.

  Further, as described above, in the present invention, the portion where the separation piece 34 is formed in the extended portion 31 a of the seal support 31 of the adhesive seal 30 does not need to be peeled off from the top surface of the bag body 10. . For this reason, it is preferable that the portion of the extended portion 31 a of the seal support 31 where the separation piece 34 is formed is firmly fixed to the top surface of the bag body 10. On the other hand, it is preferable that portions other than the separation piece 34 in the extending portion 31 a of the seal support 31 can be freely attached to and detached from the top surface of the bag body 10. The adhesive strength may be different between the adhesive layer 32 formed on the separating piece 34 and the adhesive layer 32 formed on a portion other than the separating piece 34 in the extending portion 31 a of the seal support 31. . That is, it is preferable that the adhesive strength of the pressure-sensitive adhesive layer 32 formed on the separation piece 34 is stronger than the adhesion strength of the pressure-sensitive adhesive layer 32 formed on a portion other than the separation piece 34. As described above, in the extending portion 31a of the seal support 31, the separation piece 34 and other portions may be made different in the kind and amount of the adhesive layer 32 to be applied, and the strength of the adhesive strength may be imparted. it can. Thereby, it becomes easy to perform the work of peeling the portion other than the separation piece 34 from the top surface of the bag body 10 while leaving the separation piece 34 on the top surface of the bag body 10. However, as a matter of course, the same type of adhesive can be used in the same amount for the extending portion 31 a and the fixing portion 31 b of the seal support 31.

  The present invention has been described with reference to preferred embodiments. However, the present invention is not limited to the above-described embodiments, and those skilled in the art can make appropriate modifications and alterations within the obvious range based on the above-described embodiments.

  The present invention relates to a packaging bag for packaging articles such as confectionery and wet tissue. Therefore, the present invention can be suitably used, for example, in manufacturing industries such as confectionery and wet tissue.

DESCRIPTION OF SYMBOLS 10 ... Bag body 11 ... Notch 12 ... Cover flap 13 ... Outlet 20 ... Backing sheet 21 ... Base material layer 22 ... Adhesive layer 23 ... Opening part 30 ... Adhesive seal 31 ... Seal support 31a ... Extension part 31b ... Fixed Part 32 ... Adhesive layer 33 ... Perforation 34 ... Separation piece 35 ... Pick part 100 ... Packaging bag

Claims (3)

A resealable packaging bag comprising a bag (10) and a backing sheet (20),
The bag (10)
A lid flap (12) formed by providing a cut (11) on the top surface;
An outlet (13) that appears by lifting the lid flap (12);
The backing sheet (20)
Arranged inside the bag (10),
A substrate layer (21);
An adhesive layer (22) that adheres to the back side of the top surface of the bag (10) so that the base material layer (21) protrudes inward from the inner edge of the outlet (13);
As a result,
A packaging bag in which a part of the lid flap (12) adheres to a part of the adhesive layer (22) when the outlet (13) is closed by the lid flap (12). The packaging bag further comprises an adhesive seal (30) attached to the tip of the lid flap (12),
The adhesive seal (30)
A seal support (31) having an extension part (31a) extending from the front edge of the lid flap (12) and a fixing part (31b) fixed to the lid flap (12);
An adhesive layer (32) formed over the extending portion (31a) and the fixing portion (31b) of the seal support (31);
A perforation (33) formed in the extension (31a) of the seal support (31);
A separation piece (34) that separates from the seal support (31) by breaking the perforation (33),
As a result,
The separation piece (34) is separated from the seal support (31) when the lid flap (12) is lifted, and remains on the top surface of the bag (10). Packaging bag. The packaging bag according to claim 2, wherein the seal support (31) has a knob (35) in which the adhesive layer (32) is not formed.

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