JP5891817B2 - Packaging bag - Google Patents

Description

  The present invention relates to a packaging bag which can be sealed again after opening. The present invention also relates to a packaging bag in which an adhesive tape is fixed to the packaging bag.

  A conventional resealable packaging bag is disclosed in Patent Document 1. This packaging bag is formed by arranging a laminated body having a heat-adhesive resin layer as an innermost layer facing each other and thermally bonding the periphery with a heat-bonding portion. Further, a perforated half-cut line is provided at a planned opening location, and a zip portion is provided below the half-cut line. The zip portion is formed by opposing a concave tape and a convex tape that can be fitted to each other. Thereby, after opening a packaging bag along a half cut line at the time of opening of a packaging bag, a concave tape and a convex tape can be meshed | engaged and a packaging bag can be resealed.

Japanese Patent Laid-Open No. 2003-72775

  However, according to the packaging bag, there is a problem that the structure is complicated by the zip portion and the manufacturing cost is increased. In addition, there is a problem that it takes time and effort to re-seal the packaging bag by separating the concave tape and the convex tape at the zip portion.

  In view of the above problems, an object of the present invention is to provide a packaging bag that can be quickly resealed while reducing the manufacturing cost, and a packaging bag using the packaging bag.

  In order to achieve the above object, the present invention provides a packaging bag having a resin film and having an opening at one end, and a non-adhesive region in which the adhesive force to the adhesive tape is lost on the outer surface. And the non-adhesive region is printed with identification printing that can visually identify the surrounding area.

  According to this structure, the contents are accommodated in the packaging bag from the opening, and the opening is sealed by a sealing means such as thermal bonding. The packaging bag opened to take out a part of the contents is folded at the opened opening end and sealed with an adhesive tape. At this time, the adhesive tape is stuck across the storage portion of the contents and the folded portion including the unsealed end in a state where one end is arranged on the non-adhesive region identified by the identification printing. When one end of the adhesive tape is gripped and the adhesive tape is peeled off, the packaging bag is resumed. In addition, you may implement | achieve a sealing means by sticking an adhesive tape on the packaging bag which bent the opening part side.

  In the packaging bag having the above-described configuration, the present invention provides a cutting line that is opened when the resin film is half cut along the opening to seal the opening, and along the cutting line. The non-adhesive region is provided. According to this structure, an opening part is sealed by thermal bonding etc., it cut | disconnects with the cutting line formed along an opening part, and a packaging bag is opened. The packaging bag from which a part of the contents is taken out is folded at the opening end formed by the cutting line and sealed with an adhesive tape. At this time, one end of the adhesive tape is arranged on a non-adhesive region provided along the cutting line.

  In the packaging bag having the above-described configuration, the non-adhesive region area per unit area is smaller at a position closer to a position far from the cutting line. According to this configuration, the adhesiveness between the outer surface of the packaging bag and the adhesive tape becomes stronger as the area of the non-adhesive region per unit area becomes smaller, and the adhesive tape can be easily peeled from a position far from the cutting line. .

  According to the present invention, in the packaging bag having the above-described configuration, the non-adhesive region is formed by applying a release agent.

  According to the present invention, in the packaging bag having the above-described configuration, the release agent is made of an acrylic resin or an acrylic vinyl chloride resin.

  The packaging bag of the present invention has the packaging bag having the above-described configuration and a fixing portion fixed to the packaging bag at one end, and the other end is bent at a predetermined position between the fixing portion and the opening. And an adhesive tape disposed on the non-adhesive region of the packaging bag.

  Further, the present invention provides a packaging bag comprising a packaging bag formed in a bag shape having an opening at one end thereof by a resin film and an adhesive tape having an adhering portion fixed to the packaging bag at one end. Has a non-adhesive region in which the adhesive force to the adhesive tape has disappeared on the outer surface, and the other end of the adhesive tape is bent at a predetermined position between the fixing portion and the opening. It is characterized by being arranged on a non-adhesive region.

  According to this structure, the contents are accommodated in the packaging bag from the opening, and the opening is sealed by a sealing means such as thermal bonding. The packaging bag opened to take out a part of the contents is folded at the opened opening end and sealed with an adhesive tape. At this time, the adhesive tape is stuck and placed on the non-adhesive region of the packaging bag which is bent at a predetermined position between the fixing portion and the opening portion with one end fixed to the packaging bag. When one end of the adhesive tape is gripped and the adhesive tape is peeled off, the packaging bag is resumed. In addition, you may implement | achieve a sealing means by sticking an adhesive tape on the packaging bag which bent the opening part side.

  Further, the present invention is characterized in that, in the packaging bag having the above-described configuration, one end of the adhesive tape is widened with respect to the other end. According to this structure, since the adhesiveness of the outer surface of a packaging bag and an adhesive tape becomes large in the area | region where an adhesive tape widens, the adhesive tape peeled from the other end becomes difficult to peel in the widened part.

  According to the present invention, since the non-adhesive region where the adhesive force to the adhesive tape has disappeared is subjected to identification printing that can be visually identified with respect to the surroundings, one end of the adhesive tape is used as a mark for identification printing. Can be attached to face. Thereby, the edge part of the adhesive tape which faced the non-adhesion area | region can be grasped, and an adhesive tape can be quickly peeled off from a packaging bag. Therefore, the manufacturing cost of the packaging bag can be reduced, and the packaging bag can be easily resumed.

  According to the present invention, the other end of the adhesive tape whose one end is fixed to the packaging bag is disposed on the non-adhesive region of the packaging bag that is bent at a predetermined position between the fixing portion and the opening. The bent state is maintained. Therefore, the packaging bag can be easily resealed. In addition, the end of the adhesive tape facing the non-adhesive region can be held and the adhesive tape can be quickly peeled off from the packaging bag. Therefore, the manufacturing cost of the packaging bag can be reduced, and the packaging bag can be easily resumed.

The top view of the packaging bag which concerns on 1st Embodiment of this invention. The perspective view which shows the state which resealed the packaging bag which concerns on 1st Embodiment of this invention. Sectional drawing which shows the layer structure of the laminated body which comprises the packaging bag which concerns on 1st Embodiment of this invention. The top view of the packaging bag which concerns on 2nd Embodiment of this invention. The top view which expands and shows the part which adhered the adhesive tape in the state which resealed the packaging bag which concerns on 2nd Embodiment of this invention.

[First Embodiment]
A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of the packaging bag 20, and FIG. 2 is a perspective view showing a state where the opened packaging bag 20 is resealed.

  The packaging bag 20 is formed by disposing a laminated body 60 (see FIG. 3) including a base material layer 61 and a heat-adhesive resin layer 63, which will be described later, and thermally bonding the periphery with a heat-bonding portion 21, and has an opening at the upper end. 25. The opening 25 fills the packaging bag 20 with the contents, and then seals the contents in the packaging bag 20 by sealing means such as thermal bonding. At the upper part on both sides of the packaging bag 20, a notch 29 that is a notch for opening and a cutting line 22 that connects the notches 29 on both sides are provided. The cutting line 22 is formed by half-cutting the base material layer 61. Thereby, the packaging bag 20 is opened along the cutting line 22, and the opening end 22a opens.

  A first region 24 c and a second region 24 d are provided adjacent to each other along the cutting line 22. The first region 24c and the second region 24d are formed by the non-adhesive region 24b, and the non-adhesive region 24b loses the adhesive force to the adhesive tape 23. Further, in the second region 24d, the area of the non-adhesive region 24b per unit area is smaller than that of the first region 24c. For this reason, the first region 24c has a weaker adhesive force to the adhesive tape 23 than the second region 24d. Therefore, the adhesive tape 23 can be easily peeled from a position far from the cutting line 22. The non-adhesive region 24b is provided with identification printing that can be visually identified with respect to the surroundings. In the printing for identification, the non-adhesive region 24 may be colored with a color different from the surroundings, or the periphery of the non-adhesive region 24 may be surrounded and visually identifiable.

  Once the packaging bag 20 has been opened, the contents are taken out from the opening end 22 a, and then the opening end 22 a is bent at a predetermined position indicated by a one-dot chain line D and sealed with an adhesive tape 23. At this time, the bent portion 20a including the unsealed end 22a is folded back with respect to the storage portion 20b storing the contents, and the adhesive tape 23 is stuck across the storage portion 20b and the bent portion 20a. Thereby, the bending state of the packaging bag 20 is maintained, and airtightness is obtained inside the storage portion 20b. When the adhesive tape 23 is peeled off by gripping one end of the adhesive tape 23, the packaging bag 20 is resealed.

  In the folded state of the packaging bag 20, the non-adhesive region 24 b is arranged in the bent portion 20 a, and the first region 24 c faces a position near the end of the adhesive tape 23. Thereby, the edge part of the adhesive tape 23 which faced the non-adhesion area | region 24b can be picked, and the adhesive tape 23 can be quickly peeled off from the surface of the bending part 20a.

  FIG. 3 is a cross-sectional view showing the layer structure of the laminated body 60 constituting the packaging bag 20. The laminated body 60 constituting the packaging bag 20 has a printed layer 64 that is identified from the surface side of the base material layer 61 between the base material layer 61 that is the outermost layer and the thermal adhesive resin layer 63 that is the innermost layer. Is done. In addition, a release agent layer 61 a is laminated on the surface layer of the base material layer 61 by applying a release agent. The non-adhesive region 24b is formed by the release agent layer 61a. As a result, the first region 24c and the second region 24d are formed so as to be distinguished depending on the size of the application area per unit area of the release agent layer 61a.

  When the packaging bag 20 is subjected to severe physical and chemical conditions, the base material layer 61 has a high sealing property, puncture resistance (pinhole resistance), heat resistance, light resistance, quality maintenance, Workability, hygiene and the like are imparted. Further, the base material layer 61 easily adheres to the adhesive tape 23 in a region where the release agent layer 61a is not formed. In addition, when using the resin film from which adhesive strength disappeared beforehand for the base material layer 61, the coating agent which has adhesiveness with respect to the adhesive tape 23 is apply | coated to the area | region except the non-adhesion area | region 24b, and 1st area | region 24c and 2nd area | region 24d may be formed.

  As the base material layer 61, for example, a known resin such as high-density polyethylene, polypropylene, ethylene-propylene copolymer, poly (meth) acrylic resin, polyester resin, or polyamide resin is arbitrarily selected and used. Can do.

  Further, a heat resistant resin such as polyethylene terephthalate or polyethylene naphthalate can be used for the base material layer 61.

  The heat-adhesive resin layer 63 only needs to be capable of being melted by heat and fusing the opposing laminates 60 to each other, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) ) Ethylene / α-olefin copolymer, polypropylene, ethylene / vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer, ethylene polymerized using low density polyethylene, metallocene catalyst (single site catalyst) -Acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, methylpentene polymer, polyolefin resin such as polyethylene or polypropylene is used for non-acrylic acid, methacrylic acid, maleic anhydride, fumaric acid, etc. Acid-modified polyolefin resin modified with saturated carboxylic acid, etc. It one not selected et can be used two or more kinds. Preferable examples include linear low density polyethylene.

  The release agent layer 61 a is made of an acrylic resin or an acrylic vinyl chloride resin and does not adhere to the adhesive tape 23. In addition, the first region 24c and the second region 24d can be easily formed by printing the release agent on the surface layer of the base material layer 61. The second region 24 d is formed by partially printing a release agent on the surface of the base material layer 61. The method for printing the release agent is not particularly limited, and for example, an offset printing method, a gravure printing method, a flexographic printing method, a silk screen printing method, a roll coating method, a reverse coating method, or the like can be used as appropriate. .

  The interlayer adhesive strength between the release agent layer 61a and the base material layer 61 may be formed weaker than the adhesive strength between the release agent layer 61a and the adhesive tape 23. At this time, when the adhesive tape 23 once adhered to the non-adhesive region 24 b is peeled off, the release agent layer 61 a is peeled off from the base material layer 61 and adhered to the adhesive surface of the adhesive tape 23. As a result, a non-adhesive region is formed on a part of the adhesive surface of the adhesive tape 23. This adhesive tape 23 can be quickly peeled off by gripping the end of the adhesive tape 23 facing the non-adhesive region. In order to weaken the adhesive strength between the release agent layer 61a and the base material layer 61, it can be easily formed by printing the release agent on the surface layer of the base material layer 61 on the non-corona-treated surface.

  The print layer 64 is formed by printing and applying an ink material to the back surface of the base material layer 61. Thereby, the printed layer 64 is visually recognized from the appearance side of the packaging bag 20. The ink material used for the printing layer 64 can be composed of a binder, a colorant, and various additives. As the colorant, a chromatic color pigment or an inorganic color pigment can be used.

  According to this embodiment, the non-adhesive region 24b in which the adhesive force to the adhesive tape 23 has disappeared is subjected to identification printing that can be visually identified with respect to the surroundings. Can be attached facing the non-adhesive region 24b. Thereby, the edge part of the adhesive tape 23 which faced the non-adhesion area | region 24b can be grasped, and the adhesive tape 23 can be quickly peeled off from the packaging bag 20. FIG. Therefore, the manufacturing cost of the packaging bag 20 can be reduced, and the packaging bag 20 can be easily re-sealed.

  Further, the resin film of the base material layer 61 is half-cut along the opening 25 to provide the cutting line 22, and the non-adhesive region 24 b is provided along the cutting line 22. Thereby, the opening part 25 is sealed by thermal bonding or the like, and the packaging bag 20 is opened by cutting along the cutting line 22 formed along the opening part 25. The packaging bag 20 from which a part of the contents has been taken out is bent at an open end 22 a formed by a cutting line 22 and sealed with an adhesive tape 23. At this time, one end of the adhesive tape 23 can be disposed on the non-adhesive region 24b along the cutting line 22a.

  In addition, the position where the area of the non-adhesive region 24b per unit area is closer to the position far from the cutting line 22 is smaller. As a result, the adhesiveness between the outer surface of the packaging bag 20 and the adhesive tape 23 increases as the area of the non-adhesive region 24b per unit area decreases, and the adhesive tape 23 can be easily grasped from a position far from the cutting line 22. It can be easily peeled off.

  Moreover, the non-adhesion area | region 24b can be easily formed by apply | coating a mold release agent and forming the non-adhesion area | region 24b. Moreover, the non-adhesion area | region 24b is excellent in mold release property by forming a mold release agent by acrylic resin or acrylic vinyl chloride resin.

  In addition, you may provide the non-adhesion area | region 24b of this embodiment in the other position of the packaging bag 20. FIG. Moreover, you may provide in the accommodating part 20b and you may provide multiple non-adhesion area | regions 24b in the packaging bag 20. FIG. As a result, the user can fold the packaging bag 20 opened at an arbitrary location in an arbitrary direction and attach the adhesive tape 23 with the one end of the adhesive tape 23 facing the non-adhesive region 24b with the identification printing as a mark. In addition, by folding the predetermined width double or triple from the upper end of the unsealing end 22a, the airtightness inside the storage portion 20b can be further enhanced.

[Second Embodiment]
FIG. 4 is a plan view of the packaging bag 30 according to the second embodiment. For convenience of explanation, the same reference numerals are given to the same descriptions as those of the first embodiment shown in FIGS. In the packaging bag 30 of this embodiment, an adhesive sheet 23 is attached in advance to the packaging bag 20 before opening.

  The packaging bag 30 has a packaging bag 20 and an adhesive tape 23, and has an opening 25 at the upper end of the packaging bag 20. The opening 25 fills the packaging bag 20 with the contents, and then seals the contents in the packaging bag 20 by sealing means such as thermal bonding. A first region 24c and a second region 24d are provided on one surface of the packaging bag 20, and an adhesive tape 23 is provided on the other surface. One end of the adhesive tape 23 is fixed to the packaging bag 20 by a fixing portion 23a, and a release paper (not shown) is attached to the other end. Moreover, the adhesive tape 23 is formed in a band shape with one end widened with respect to the other end.

  At the upper part on both sides of the packaging bag 20, a notch 29 that is a notch for opening and a cutting line 22 that connects the notches 29 on both sides are provided. The cutting line 22 is formed by half-cutting the base material layer 61. Thereby, the packaging bag 20 is opened along the cutting line 22, and the opening end 22a opens.

  Once the packaging bag 20 has been opened, the contents are taken out from the opening end 22a, and then the packaging bag 20 folded along a predetermined position indicated by a one-dot chain line D between the fixing portion 23a and the cutting line 22 is used as a release paper. Adhere with the peeled adhesive tape 23. At this time, one end of the adhesive tape 23 is disposed on the non-adhesive region 24b.

  FIG. 5 is an enlarged plan view showing a portion where the adhesive tape 23 is adhered in a state where the packaging body 30 according to the second embodiment is resealed. The adhesive tape 23 has an adhesive applied to one surface of the resin film. And sticky. In addition, the adhesive tape 23 is widened and the adhesiveness between the packaging bag 20 and the adhesive tape 23 is increased. For this reason, when the adhesive tape 23 is peeled off from the bent portion 20a with a constant force, the movement of peeling off in the region where the adhesive region of the storage portion 20b is widened stops. Thereby, the adhesive tape 23 can be fastened in a state of being adhered to the storage portion 20b at the time of re-sealing, and the end portion of the adhesive tape 23 can be quickly adhered onto the non-adhesive region 24b at the time of the next re-sealing. The adhesive tape 23 may be firmly fixed to the packaging bag 20 via a strong adhesive on the fixing part 23a.

  According to this embodiment, the other end of the adhesive tape 23 whose one end is fixed to the packaging bag 20 is arranged on the non-adhesive region 24b of the packaging bag 20 that is bent at a predetermined position between the fixing portion 23a and the opening 25. Thus, the folded state of the packaging bag 20 is maintained. Therefore, the packaging bag 20 can be easily resealed. In addition, the end of the adhesive tape 23 facing the non-adhesive region 24 b can be held and the adhesive tape 23 can be quickly peeled off from the packaging bag 20. Therefore, the manufacturing cost of the packaging bag 20 can be reduced, and the packaging bag 20 can be easily re-sealed.

  The present invention is applicable to packaging bags for packaging confectionery and pharmaceutical products.

DESCRIPTION OF SYMBOLS 20 Packaging bag 20a Folding part 21 Heat bonding part 22a Open end 22b Folding line 24b Non-adhesion area | region 24c 1st area | region 24d 2nd area | region 25 Opening part 30 Packaging bag 60 Laminated body 61 Base material layer 61a Release agent layer 63 Thermal bonding Resin Layer 64 Printing Layer

Claims (7)

Is formed an opening at one end with a resin film into the opened bag-like, non-adhesive region abolished the adhesion to adhesive tape having an outer surface, identify visually the non-adhesive region with respect to the surrounding A packaging bag with possible identification printing ,
An adhesive tape disposed on the non-adhesive region of the packaging bag having a fixing portion fixed to the packaging bag at one end and the other end bent at a predetermined position between the fixing portion and the opening; packaging bag characterized in that it comprises a. The resin film is formed by half-cutting along the opening , and provided with a cutting line that is opened when the opening is sealed, and the non-adhesive region is provided along the cutting line. The packaging bag according to claim 1, wherein the packaging bag is characterized.   The packaging bag according to claim 2, wherein an area of the non-adhesive region per unit area is smaller at a position closer to a position far from the cutting line. The packaging bag according to any one of claims 1 to 3, wherein the non-adhesive region is formed by a release agent layer laminated on the resin film . The packaging bag according to claim 4, wherein the release agent layer is made of an acrylic resin or an acrylic vinyl chloride resin.   In a packaging bag comprising a packaging bag formed in a bag shape having an opening at one end thereof by a resin film and an adhesive tape having an adhering portion fixed to the packaging bag at one end, the packaging bag corresponds to the adhesive tape On the non-adhesive region of the packaging bag, the adhesive tape has a non-adhesive region on the outer surface, and the other end of the adhesive tape is bent at a predetermined position between the fixing portion and the opening. A packaging bag characterized by being arranged. The packaging bag according to claim 1 or 6 , wherein one end of the adhesive tape is widened with respect to the other end.

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