JP2009227319A - Package bag with engaging implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a package bag having an engaging implement that can be easily torn out and opened at its sealed part, wherein a tearing seal opening line position of one laminated member and a tearing seal opening line position of the other laminated member constituting the package bag having an engaging implement are not overlapped to each other to form no step and further a formed band-like piece can be held with the fingers of the hand and easily opened. <P>SOLUTION: This package bag with an engaging implement includes a laminated member having a surface substrate layer, an intermediate layer and a thermal adhering resin layer laminated in sequence, wherein an opening part of the package bag formed while the thermal adhering resin layer surfaces are oppositely faced to each other to form a front surface wall and a rear surface wall and their peripheral edges are thermally adhered to each other, and the opening part of the package bag is constituted by a pair of side end edge thermal adhering portions, an upper end edge thermal adhering part and an engaging implement arranged at a position opposing against the upper end edge thermal adhering part. An intermediate layer of the laminated member forming the front surface wall and the rear surface wall at a position between the upper end edge thermal adhering part and the engaging implement is formed with a linear seal opening slit and their mutual seal opening slits are arranged in such a way that they may not be overlapped to each other and a seal opening start means is formed at a side end edge thermal adhering part where the seal opening slits are crossed from each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a packaging bag with a bite used for hermetically wrapping the contents of solids, granules, powders, etc., and in particular, it can be easily torn and opened, and torn when torn and opened. The present invention relates to a packaging bag with a bite tool that can be easily opened with fingers and can be resealed by forming a step without overlapping the position of the opening line.

  Conventionally, a packaging bag with an occlusion device with an occlusion device at the opening is widely known as a packaging bag that can be easily opened and resealed after opening. ing. A consumer who has purchased a product with the contents stored in the packaging bag with a bite device can take out the content and re-seal each time it is used. This eliminates the need for transferring to a container or the like, and is a convenient packaging for consumers. These bite packaging bags are usually provided with an opening start means and an opening means so that they can be easily opened by tearing with fingers without using a tool such as a pinch. Examples of the opening start means include notches such as I-shape, V-shape, U-shape, and turtle shell shape provided on the outer edge of the heat-bonded portion of the packaging bag with a bite, or a group of scars, etc. As a means, at least one layer of the laminated material constituting the packaging bag is left, and a cut or perforation provided in any layer or plural layers, or any layer of the laminated material constituting the packaging bag And an easily openable film, for example, a laminate of uniaxially stretched films.

  These packaging bags with a bite can be opened easily by the opening start means or the opening means, but the tear-opening line of one laminated material and the other laminated material constituting the packaging bag formed by tear-opening coincide. When the strips extending from the tear opening line to the occlusal part are picked up and the bite is removed from the bite, the strips are difficult to pick with fingers, and the opening operation is troublesome and troublesome.

Therefore, in order to make it easy to pick the strip-like piece, in the bag body with a chuck provided with a male and female bite type chuck made of synthetic resin facing the inner side surface of the opening, the chuck and A tape-like film that is equal in length and wider than the width of the base of the chuck and has a non-slip surface with a large friction coefficient such as irregularities on the surface. There has been proposed a bag body with a chuck having a structure bonded to each other (for example, see Patent Document 1). The above-described bag with a chuck can prevent the fingertip from slipping when the bitten chuck is opened, and it is easy to pick a strip on the chuck, and the chuck can be opened and closed easily. However, since a tape-like film is required, there is a problem that the material cost is increased and the cost is increased, or the tape-like film must be separately arranged according to the production schedule, which causes troublesome management. is there.
JP-A-6-286759

  Accordingly, the present invention has been made to solve the above-mentioned problems, and the object of the present invention is that it can be easily torn and opened, and one laminated material that constitutes a packaging bag with an occlusal device along with opening, It is an object of the present invention to provide a packaging bag with an occlusal tool that can be easily opened by easily picking a formed strip-shaped piece with a finger without causing overlapping of the tear opening line of the other laminated material.

  In order to achieve the above object, the present invention according to claim 1 is composed of a laminated material in which a surface base material layer, an intermediate layer, and a thermoadhesive resin layer are sequentially laminated, and the thermoadhesive resin layer faces each other. The position of the opening of the packaging bag formed by thermally bonding the front wall and the rear wall and the peripheral edge is opposed to the pair of side edge thermal adhesive portions, the upper edge thermal adhesive portions, and the upper edge thermal adhesive portions. In the packaging bag with an occlusal device, which is composed of a male member and a female member that are engaged with each other, and is formed between the upper edge thermal bonding portion and the occlusal device. In the intermediate layer of the laminated material forming the front wall and the rear wall at the position, a continuous linear opening cut substantially parallel to the upper end thermal bonding portion is formed, and provided so that the mutual opening cuts do not overlap each other. , At least one of the side edge thermal bonding portions where the opening cut intersects It is zipper with packaging bag, characterized in that opening starting means are formed.

  Further, the present invention according to claim 2 is formed by laminating a front surface wall, a rear surface wall, and a peripheral edge made of a laminated material having a surface base material layer and a heat adhesive resin layer so as to face each other. The opening portion of the packaging bag is made up of a pair of side edge thermal adhesive portions, an upper edge thermal adhesive portion, and a male member and a female member that are engaged with each other provided at positions facing the upper edge thermal adhesive portion. In the packaging bag with an occlusal device composed of an occlusion device made of thermoplastic resin, the surface of the laminated material forming the front wall and the rear wall at a position between the upper edge thermal bonding portion and the occlusion device A linear half cut substantially parallel to the upper end edge thermal bonding portion is formed on the base material layer, and provided so that the half cuts do not overlap each other, and at least the side edge thermal bonding portion intersecting the half cuts A bite characterized in that an opening start means is formed on one side It is a tool with a packaging bag.

  Further, the present invention according to claim 3 is the packaging bag with an articulator according to claim 1, wherein each of the opening start means is formed in an intermediate layer of a laminated material forming the front wall and the rear wall. It is formed in the said side edge thermal-bonding part so that a cut | interruption may be straddled simultaneously.

  Further, the present invention according to claim 4 is the packaging bag with an articulator according to claim 2, wherein the opening start means is formed on the surface base material layer of the laminated material forming the front wall and the rear wall. It is formed in the said side edge thermal-bonding part so that a half cut may be straddled simultaneously.

  The packaging bag with a bite according to claim 1 of the present invention is easily torn along the continuous linear opening cut formed in the intermediate layer of the laminated material forming the front wall and the rear wall by tearing from the opening start means. Can be opened. Furthermore, by providing the opening cut formed in the intermediate layer of the laminated material forming the front wall and the rear wall so as not to overlap each other, the laminated material of the front wall constituting the packaging bag with a bite device along with the opening, The position of the tear opening line formed by tearing the laminated material on the rear wall can be stepped without overlapping, and after opening, each formed strip can be easily picked, so the bite of the articulator can be removed. And the contents can be taken out.

  Moreover, the packaging bag with a bite according to claim 2 of the present invention is configured to form a half cut in the surface base material layer, so that the half cut serves the same function as the opening break of claim 1. In addition to the effects, the intermediate layer can be omitted, so that the cost can be reduced.

  In the packaging bag with a biting device according to claims 3 and 4 of the present invention, each of the opening breaks is formed in the intermediate layer of the laminated material forming the front wall and the rear wall. The tear opening direction is easily guided to each opening break or half cut by adopting a structure formed in the side edge thermal bonding part so as to straddle each half cut formed in the layer at the same time. A band-like piece with a step is easily formed without overlapping the positions of the tear opening lines.

The above-described present invention will be described in detail below with reference to the drawings.
1 is a plan view showing a first embodiment of a packaging bag with an articulating device according to the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is an opened state of the packaging bag with an articulating device of FIG. The perspective view of the principal part shown, FIG. 4 is a principal part top view which shows 2nd embodiment of the packaging bag with an occlusion implement concerning this invention, FIG. 5 shows 3rd embodiment of the packaging bag with an occlusion implement concerning this invention. FIG. 6 is a cross-sectional view taken along the line B-B in FIG. 5, in which 1, 1 ′, 1 ″ are packaging bags with a bite, 2, 2 ′ are front walls, 3, 3 ′ are rear Face wall, 2a and 3b are opening cuts, 2'a and 3'b are half cuts, 4 is a side edge thermal adhesive part, 5 and 5 'are upper edge thermal adhesive parts, 5a is a hook hole, and 6 is a lower edge. Thermal bonding part, 7 is an occlusion device, 7a is a male member, 7b is a female member, 10 and 10 'are laminated materials, 11 is a surface base material layer, 12 is an intermediate layer, 13 is a thermoadhesive resin layer, 20 and 20 'Is an opening, 21 is a V-shaped groove , 21 'is a U-shaped notch, 22a and 22b are tear open lines, 23a and 23b are strips, and d is a distance.

  FIG. 1 is a plan view showing a first embodiment of a packaging bag with an occlusion device according to the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 11, consisting of a rectangular laminate 10 in which an intermediate layer 12 and a thermoadhesive resin layer 13 are sequentially laminated, with the thermoadhesive resin layer 13 faces facing each other, one side being the front wall 2 and the other being the rear wall 3. This is a four-side-seal type packaging bag in which a pair of side edge thermal bonding portions 4 and 4 and an upper edge thermal bonding portion 5 are formed by thermally bonding the peripheral edges. In addition, the lower end edge thermal bonding part 6 is sealed by thermal bonding after the contents are stored, and a state before thermal bonding is indicated by a dotted line.

  The opening 20 of the packaging bag 1 with the bite device is located at the upper position of the packaging bag 1 with the bite device facing the side edge thermal bonding portions 4, 4, the upper edge thermal bonding portion 5, and the upper edge thermal bonding portion 5. It is comprised with the occlusion tool 7 made from the thermoplastic resin which consists of the male member 7a and the female member 7b which were provided and which mutually meshed. Further, a continuous linear shape substantially parallel to the upper edge thermal bonding portion 5 is provided on the intermediate layer 12 of the laminated material 10 forming the front wall 2 and the rear wall 3 at a position between the upper edge thermal bonding portion 5 and the articulating tool 7. Opening cuts 2a and 3b are formed, and the opening cuts 2a and 3b are provided at a distance d so as not to overlap each other. The distance d is preferably 0.2 mm to 2.0 mm, and more preferably 0.5 mm to 1.5 mm. If it exceeds 2.0 mm, the tear direction of one laminated material may not be guided to one opening break. If it is less than 0.2 mm, it is difficult to pick the strips of the front wall and the rear wall formed after opening. Further, a V-shaped notch 21 is formed as an opening start means on at least one of the side edge thermal bonding portions 4 where the opening cut 2a intersects. V-shaped notches 21 may be provided at both ends. Moreover, you may provide in the one or both of the side edge thermal-bonding part 4 which the cut | interruption cut | interruption 3b cross | intersects. It suffices if it is at least in one place. As the opening start means, in addition to the V-shaped notches, notches such as I-shape, U-shape, and turtle shell shape, or scars are listed. The opening start means is preferably provided within the interval d between the opening cut 2a and the opening cut 3b, and more preferably provided so as to intersect the opening cut 2a and / or the opening cut 3b. The packaging bag with a bite 1 of the first embodiment is a label seal type in which the width of the upper edge thermal bonding portion 5 is wider than that of other thermal bonding portions, and a circular hook at the center of the upper edge thermal bonding portion 5 Although the four-side seal type packaging bag provided with the holes 5a is illustrated, the form of the packaging bag is not limited, and can be applied to a three-side seal type, a four-side seal type, a standing type packaging bag, and the like.

  As shown in FIG. 3, the packaging bag 1 with the bite having the above-described structure is picked at the corner of the upper edge thermal bonding portion 5 on the side where the V-shaped notch 21 is formed with one finger, and with the other finger. When the side edge thermal bond part 4 vicinity of the lower side of the V-shaped notch 21 is picked and torn, the laminated material 10 of the front wall 2 is torn along the opening cut 2a, and the laminated material 10 of the rear wall 3 is the upper end. A tear opening line 22a formed by being torn obliquely toward the edge thermal bonding portion 5 and guided to the opening cut 3b, then torn along the opening cut 3b, and torn to the front wall 2. A band-like piece 23 a is formed between the occlusal part of the bite 7, and a gap d is formed between the tear opening line 22 b formed by tearing the rear wall 3 and the bite part of the bite 7 than the band-like piece 23 a. As a result, a wide strip 23b is formed. After that, as shown in FIG. 3, since a step with a distance d is generated between the strips 23a and 23b, the strips 23a and the strips 23b can be easily picked and the bite of the bite 7 can be easily removed and opened. The contents can be taken out. As described above, since there is a step between the belt-like piece 23a and the belt-like piece 23b, the opening / closing operation of the articulator can be easily repeated, and the troublesomeness is eliminated. As shown in FIGS. 1 and 2, the opening cut 2a is provided closer to the bite 7 than the opening cut 3b, and the V-shaped notch 21 is formed so as to intersect the opening cut 2a. Is opened from the V-shaped notch 21 and is torn toward the upper edge thermal bonding portion 5 side, the tearing direction of the laminated material 10 on the front wall 2 is the opening cut 2a and the rear wall 3 The direction of tearing the laminated material 10 is preferable because it is easily guided to the opening cut 3b. When the V-shaped notch 21 is formed so as to intersect the opening cut 3b, the opening is opened from the V-shaped notch 21. Starting and tearing so as to pull down toward the bite 7 side, the tearing direction of the laminated material 10 of the rear wall 3 is the opening cut 3b, and the direction of tearing the laminated material 10 of the front wall 2 is the opening cut 2a. Is easy to guide And it serves as a method.

  FIG. 4: is a principal part top view which shows 2nd embodiment of the packaging bag with an occlusion tool concerning this invention, and it is the same form except 1st embodiment, an opening means, and its formation position. As shown in FIG. 4, the packaging bag with a bite 1 ′ of the second embodiment is formed in the intermediate layer 12 of the laminated material 10 in which the U-shaped notch 21 ′ forms the front wall 2 and the rear wall 3 as an opening start means. Further, the side edge thermal bonding portion 4 is formed so as to straddle the respective opening cuts 2a and 3a. Since the U-shaped notch 21 ′ has such a configuration, the tear opening direction is easily guided to the respective opening breaks 2a and 3a when the packaging bag 1 ′ with the bite is opened, so that the tear is opened. Band-shaped pieces with steps are easily formed without overlapping the positions of the opening lines.

  FIG. 5 is a plan view showing a third embodiment of a packaging bag with an occlusion device according to the present invention, FIG. 6 is a cross-sectional view taken along line BB of FIG. Composed of a rectangular laminated material 10 'having a material layer 11 and a heat-adhesive resin layer 13, the surfaces of the heat-adhesive resin layer 13 are opposed to each other and one is a front wall 2' and the other is a rear wall 3 '. This is a four-side-seal type packaging bag in which a peripheral edge is thermally bonded to form a pair of side edge thermal bonding portions 4, 4 and an upper edge thermal bonding portion 5 '. The lower end is provided with a lower edge thermal bonding portion 6 that is sealed by thermal bonding after the contents are stored. The lower edge thermal bonding portion 6 in FIG. 5 is in a state before thermal bonding and is indicated by a dotted line. The opening 20 'of the packaging bag with bite 1' 'has side edge thermal bonding portions 4, 4, the upper edge thermal bonding portion 5', and the upper edge thermal bonding portion 5 'facing the packaging bag 1 with bite. It is composed of a thermoplastic resin bite 7 comprising a male member 7a and a female member 7b, which are provided at the upper position of '' and are engaged with each other. The surface base material layer 11 of the laminated material 10 ′ that forms the front wall 2 ′ and the rear wall 3 ′ at a position between the upper edge thermal bonding portion 5 ′ and the articulating tool 7 is substantially parallel to the upper edge thermal bonding portion 5 ′. The straight half-cuts 2′a and 3′b are provided at a distance d so as not to overlap each other. A V-shaped notch 21 is formed as an opening start means on at least one of the side edge thermal bonding portions 4 where the half cuts 2'a intersect. The depths of the half cuts 2 ′ a and 3 ′ b are formed within the thickness of the surface base material layer 11. The unsealing start means, the position to be formed, and the unsealing method are the same as those in the first embodiment, and a description thereof will be omitted.

Next, the laminated materials 10 and 10 ′ constituting the packaging bag with an occlusal device 1 and 1 ″ will be described.
As the surface base material layer 11 of the laminated material 10, 10 ′, since it becomes a basic material constituting the packaging bag 1, 1 ″ with the bite, it has excellent properties in mechanical, physical, chemical and the like. A synthetic resin film can be used. For example, a biaxially stretched film or cellophane using a resin such as polyethylene terephthalate, nylon, or polypropylene can be preferably used. The surface base material layer 11 is usually subjected to printing, and a biaxially stretched film excellent in printability is preferable. The thickness of the synthetic resin film used for the surface base material layer 11 may be any thickness that can be held to the minimum necessary for strength, rigidity, etc. as a basic material. Packaging conditions, packaging transportation conditions, packaging bags However, it is usually about 9 to 40 μm.

  The intermediate layer 12 is provided when rigidity, light shielding properties, gas barrier properties, etc. are required according to packaging conditions, transportation conditions, and protective function conditions of contents, and is used for the surface base material layer 11. A resin film, a film obtained by depositing a metal such as aluminum or a metal oxide such as aluminum oxide or silicon oxide, polyvinyl alcohol, a saponified ethylene-vinyl acetate copolymer, an aluminum foil, and paper. Moreover, what laminated | stacked combining these films etc. may be used.

  The heat-adhesive resin layer 13 may be a layer formed from a heat-adhesive resin that can be melted by heat and welded to each other, and can be appropriately selected and used according to various conditions required for the packaging bag. For example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-α olefin copolymer, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer , Ionomers, ethylene-acrylic acid copolymers, ethylene-acrylic acid ester copolymers, and the like. As a method of laminating each layer, a known laminating method such as a sandwich lamination method or a dry lamination method may be used as appropriate. The laminated material 10 ′ used for the packaging bag 1 ″ with the occlusion device according to the third embodiment is formed by laminating an intermediate layer between the surface base material layer 11 and the thermoadhesive resin layer 13 according to conditions required for the packaging bag. You can also

  In addition, the bite 7 is a pair of male member 7a and female member 7b, and the side edge of the other side edge from the outer edge of one side edge thermal bonding portion 4 to the surface of the heat-bonding resin layer 13 of the laminated material 10, 10 ′. The outer edge of the thermal bonding portion 4 is thermally bonded by a known means, and is molded using a thermoplastic resin that can be bonded to the thermal adhesive resin layer 13. Examples of the thermoplastic resin include low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-α olefin copolymer, ethylene-propylene copolymer, and ethylene-vinyl acetate copolymer. , An ionomer, an ethylene-acrylic acid copolymer, an ethylene-acrylic acid ester copolymer, or the like can be used.

  In addition, when forming the opening cuts 2a and 3b, for example, when laminating by the dry lamination method, the surface base material layer 11 is supplied from the first paper feeding unit, and an adhesive is applied to one surface of the surface base material layer 11. After applying and drying and removing the solvent with a drier, the intermediate layer 12 is supplied from the second paper feeding unit and pressed against the adhesive application surface of the surface base material layer 11 at the bonding part composed of a heating roll and a pressure roll. Immediately before the lamination, a cutting blade made of a carbide blade having a thickness of 0.2 to 0.3 mm is applied to a predetermined position of the intermediate layer 12 to form a straight line.

  Further, the formation of the half cuts 2′a and 3′b is, for example, in the step of making a bag using the laminated material 10 ′, while taking up the laminated material 10 ′ from the paper feed, It is formed by making a scratch of a predetermined depth by bringing a diamond needle or the like into contact with the predetermined position. The half cut depth is preferably within the thickness of the surface base material layer 11.

  Next, the present invention will be described in more detail with reference to examples.

  Using a biaxially stretched polypropylene (OPP) having a single-sided corona treatment with a thickness of 30 μm for the surface base material layer 11, a pattern layer is provided on the corona-treated surface by applying a gravure printing using urethane-based ink. Using urethane terephthalate (VMPET) with a 12 μm-thick aluminum vapor deposited on the intermediate layer 12, the vapor deposited aluminum surface of VMPET is applied to the adhesive coated surface by dry lamination (DL). In the step of laminating, just before heating and pressurizing at the bonding part, a cutting edge made of a carbide blade having a thickness of 0.2 mm is applied to a predetermined location in which the position of the VMPET pattern layer and the position in the width direction are synchronized. Opening cuts 2a and 3b continuous in the flow direction were provided and laminated. Further, a urethane-based adhesive is applied to the polyethylene terephthalate surface of VMPET, and is laminated on the heat-adhesive resin layer 13 by using a low-density polyethylene (LDPE) having a thickness of 30 μm by a dry lamination method, and OPP 30 μm / printing / DL / A winding of a laminate of VMPET 12 μm / DL / LDPE 30 μm was prepared. While using the above-described laminate winding, slitting the center in the flow direction of the laminate with the bag making machine and making the LDPE surface face each other so that the opening cut 2a and the opening cut 3b do not overlap each other, Heat-adhering while inserting a polyethylene bite into a predetermined position between the LDPEs stacked opposite to each other, and forming a V-shaped notch 21 on one side edge heat-bonding portion 4 where the opening cut 2a intersects; A packaging bag 1 with a bite shown in FIG. 1 was produced. The interval between the opening cuts 2a and 3b was 1.0 mm, and the interval between the opening cut 2a and the occlusal portion of the bite was 10 mm.

  The interval between the opening cuts 2a and 3b of the packaging bag 1 with the bite device of Example 1 was set to 0.2 mm.

  The interval between the opening cuts 2a and 3b of the packaging bag 1 with the biting device of Example 1 was 1.5 mm.

  The opening start means of the packaging bag 1 with the bite according to the first embodiment is a U-shaped notch 21 'and is formed so as to straddle the opening cuts 2a and 3b. Produced.

  Using a biaxially stretched polypropylene (OPP) having a single-sided corona treatment with a thickness of 30 μm for the surface base material layer 11, a pattern layer is provided on the corona-treated surface by applying a gravure printing using urethane-based ink. A urethane adhesive is applied to the heat-adhesive resin layer 13 using a low-density polyethylene (LDPE) with a thickness of 30 μm and laminated by a dry lamination method to wind up a laminate of OPP 30 μm / printing / DL / LDPE 30 μm. Produced. Half rolls 2'a and 3'b are formed by contacting diamond needles at predetermined positions on the OPP surface while unwinding the laminated material from the paper feed of the bag making machine, and bag making is performed in the same manner as in Example 1. Thus, a packaging bag with a bite 1 '' shown in FIG. 5 was produced. The interval between the opening cuts was 1.0 mm, and the interval between the opening cuts and the occlusal portion of the bite was 10 mm.

  Any of the packaging bags with bite produced in Examples 1 to 5 can be torn open from the V-shaped notch or U-shaped notch, and the tear opening direction is easily guided by the respective opening breaks or half cuts, and the tear opening is performed. The strips with steps could be formed without overlapping the positions of the lines, and the strips could be easily picked by the steps of the formed strips, and the articulator could be easily removed.

It is a top view which shows 1st embodiment of the packaging bag with an occlusion implement concerning this invention. It is the sectional view on the AA line of FIG. It is a perspective view of the principal part which shows an open state about the packaging bag with a bite tool of FIG. It is a principal part top view which shows 2nd embodiment of the packaging bag with an occlusion tool concerning this invention. It is a top view which shows 3rd embodiment of the packaging bag with an occlusion tool concerning this invention. FIG. 6 is a sectional view taken along line B-B in FIG. 5.

Explanation of symbols

1, 1 ', 1''packaging bag with bite 2, 2' front wall 3, 3 'rear wall 2a, 3b opening cut 2'a, 3'b half cut 4 side edge thermal bonding part 5, 5 'Upper edge thermal bonding part 5a Hook hole 6 Lower edge thermal bonding part 7 Occlusion tool 7a Male member 7b Female member 10, 10' Laminate 11 Surface base material layer 12 Intermediate layer 13 Thermal adhesive resin layer 20, 20 'Opening 21 V-shaped notch 21 'U-shaped notch 22a, 22b Tear opening line 23a, 23b Band-shaped piece d Interval

Claims (4)

Opening of a packaging bag formed by laminating a surface base material layer, an intermediate layer, and a heat-adhesive resin layer sequentially, with the heat-adhesive resin layer surfaces facing each other and heat-bonding the front and rear walls and the peripheral edge The part is made of a thermoplastic resin comprising a pair of side edge thermal bonding portions, an upper edge thermal bonding portion, and a male member and a female member that are engaged with each other and provided at positions facing the upper edge thermal bonding portion. In the packaging bag with an occlusal device, the upper end thermal adhesive portion is attached to an intermediate layer of the laminated material forming the front wall and the rear wall at a position between the upper edge thermal adhesive portion and the occlusal device. A continuous straight opening break that is substantially parallel to the opening is formed so that the opening breaks are not overlapped with each other, and opening is started at at least one of the side edge thermal bonding portions where the opening break intersects Packaging bag with a bite, characterized in that means are formed The opening portion of the packaging bag formed by laminating a surface base material layer and a heat-adhesive resin layer with the heat-adhesive resin layer surface facing each other and heat-bonding the front and rear walls and the peripheral edge is a pair of sides. Consists of an end edge thermal bonding portion, an upper end edge thermal bonding portion, and a bite made of a thermoplastic resin comprising a male member and a female member which are provided at positions facing the upper end edge thermal bonding portion. In the packaging bag with an occlusal device, the upper end edge thermal adhesive portion and the upper end edge thermal adhesive portion are substantially formed on the surface base material layer of the laminated material forming the front wall and the rear wall at a position between the upper edge thermal adhesive portion and the bite. Parallel straight half-cuts are formed so that the half-cuts do not overlap with each other, and an opening start means is formed on at least one of the side edge thermal bonding portions where the half-cuts intersect. A packaging bag with a bite. The opening start means is formed on the side edge thermal bonding portion so as to simultaneously straddle each opening cut formed in the intermediate layer of the laminated material forming the front wall and the rear wall. The packaging bag with a bite according to claim 1. The opening start means is formed on the side edge thermal bonding portion so as to simultaneously straddle each half cut formed on the surface base material layer of the laminated material forming the front wall and the rear wall. The packaging bag with a bite according to claim 2.

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