JP2016097997A - Packing bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a content-contained packing bag capable of improving convenience.SOLUTION: A packing bag 10 seals and stores the content, by thermally adhering a thermal adhesive resin layer of opposed front face part and back face part 12 on both upper-lower edges, by bending a resin film 3 having at least a base material layer and a thermal adhesive resin layer, and comprises an opening starting part formed in one of the front face part and the back face part 12 and a belt-like label 4 stuck by covering the opening starting part, and the opening starting part is composed of a notch 5 for projecting and connecting two points juxtaposed in the predetermined direction in the orthogonal direction, and the label 4 is arranged over the front face part and the back face part 12 by extending to the opposite side of the projection direction of the opening starting part.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a packaging bag made of a resin film in which contents are packaged.

  A conventional packaging bag is disclosed in Patent Document 1. This packaging bag is formed by thermally bonding a resin film, and both ends in the vertical direction of a cylindrical resin film containing contents are closed by thermal bonding. The peripheral surface of the packaging bag is connected to the front and back portions facing each other by folding the resin film by gussets on both sides.

  A pair of opposing perforated cutting parts extend in the left-right direction at the upper part of the front part, and the left end of the cutting part is formed at the front part of the left gusset part. A first cut is formed at the front of the right gusset. The first cut is formed in a U-shape in which two points on the resin film protrude and are connected rearward. Between the first cut and the cut portion, there is provided a C-shaped second cut extending from the first cut toward the cut portion. Moreover, the label is stuck over both the gusset part and the front part so that the 1st cut and the 2nd cut may be covered.

  In the packaging bag having the above configuration, when the user peels off the label in the circumferential direction, the resin film inside the first cut and the second cut is pulled by the label, so the resin film is cut from the both ends of the first cut. And it cut | disconnects continuously and cut | disconnects in a strip | belt shape. Thereby, a packaging bag forms an opening part in the front part and front part of a gusset part, and is opened, and the user can take out the content through an opening part.

Japanese Patent Laid-Open No. 9-142523 (page 5, FIGS. 8 to 10)

  However, according to the conventional packaging bag, the front part above the opening part is easily caught by the contents when opening and taking out the contents. For this reason, there was a problem that the convenience of the packaging bag was bad.

  An object of this invention is to provide the packaging bag containing the content which can improve the convenience.

In order to achieve the above-mentioned object, the present invention is configured to bend the resin film having at least a base material layer and a heat-adhesive resin layer and heat the heat-adhesive resin layers on the front and back portions facing each other at both upper and lower edges. In a packaging bag that adheres and seals the contents,
An opening start part formed on one of the front part and the back part;
A strip-shaped label adhered to cover the opening start portion;
Comprising a notch that projects and connects two points in which the opening start portion is arranged in a predetermined direction in a direction orthogonal to each other,
The label extends in a direction opposite to the protruding direction of the opening start portion and is arranged over the front surface portion and the back surface portion.

  According to this configuration, when the user peels off the label in the extending direction, the resin film inside the opening start portion is pulled by the label. And a resin film fractures | ruptures from an opening start part, an opening part is formed in a strip shape over a front part and a back part, and a packaging bag is opened.

  In the packaging bag having the above-described configuration, the present invention further includes a palm seal portion that protrudes from the back surface portion and extends in the vertical direction, and the opening start portion is formed on the back surface portion on the opposite side of the tilt direction of the palm seal portion. It is preferable.

  In the packaging bag having the above-described configuration, the present invention is preferably such that the base material layer is formed of a uniaxially stretched film, and the stretching direction of the uniaxially stretched film coincides with a direction orthogonal to the predetermined direction.

  In the packaging bag having the above-described configuration, the present invention is preferably such that the base material layer is formed of a uniaxially stretched polypropylene film.

  According to the present invention, a label that covers an opening start portion made of a notch protruding in one direction extends to the side opposite to the protruding direction of the opening start portion, and is adhered to the front surface portion and the back surface portion. Thus, when the label is pulled in the extending direction, the resin film is broken from both ends of the opening start portion, and an opening is formed across the front and back portions. Therefore, the contents are not easily caught on the packaging bag when the contents are taken out, the contents can be easily taken out, and the convenience of the packaging bag can be improved.

The front view of the packaging bag of 1st Embodiment of this invention The rear view of the packaging bag of 1st Embodiment of this invention The front view at the time of opening of the packaging bag of 1st Embodiment of this invention The perspective view of the winding body used for formation of the packaging bag of 1st Embodiment of this invention. The perspective view which shows the manufacturing process of the packaging bag of 1st Embodiment of this invention. The front view of the packaging bag of 2nd Embodiment of this invention The rear view of the packaging bag of 2nd Embodiment of this invention The front view at the time of opening of the packaging bag of 2nd Embodiment of this invention

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG.1 and FIG.2 has each shown the front view and back view of the packaging bag of this embodiment. The pillow-type packaging bag 10 bends the resin film 3 and thermally bonds it, and seals and stores the contents S such as stick-like confectionery. The resin film 3 is formed by laminating a base material layer, a barrier layer, and a thermoadhesive resin layer (all not shown) in order from the outer surface side to the inner surface side.

  The base material layer of the resin film 3 is formed of, for example, a uniaxially stretched polypropylene film (uniaxially stretched film) having a thickness of 25 μm. The stretching direction of the uniaxially stretched polypropylene film coincides with a direction in which edge seal portions 16 and 17 described later extend (left and right directions in FIGS. 1 and 2). The barrier layer for preventing permeation of water vapor or the like is formed of, for example, a polyethylene terephthalate film having a thickness of 12 μm subjected to aluminum vapor deposition. In addition, you may form a barrier layer with the polyethylene terephthalate film which gave silica vapor deposition, or aluminum foil. The thermal adhesive resin layer is formed of, for example, an easy peel film having a thickness of 30 μm, and the opposing thermal adhesive resin layers are thermally bonded to each other. The easy peel film is composed of, for example, a two-layer structure of polyethylene and ethylene copolymer.

  The packaging bag 10 is formed into a cylindrical shape by heat bonding with a palm seal portion 13 extending in the vertical direction on the back side, and the upper and lower end edges of the front surface portion 11 and the back surface portion 12 facing each other are heated with the edge seal portions 16 and 17. Glued and sealed. A product name, a design, and the like of the contents S are printed on the front surface portion 11. The joint seal portion 13 is pressed at the top and bottom during heat bonding by the heat sealer 20 (see FIG. 5), and tilts to the left in FIG.

  A through-cut 5 is provided in the resin film 3 above the back surface portion 12. The notch 5 is formed by a continuous straight line and is formed in a U-shape that is convex in the direction in which the edge seal portions 16 and 17 extend. The notch 5 is arranged on the opposite side (right side in FIG. 2) in the tilting direction with respect to the palm seal portion 13 with the open end facing the palm seal portion 13.

  Note that the shape of the cut 5 is not limited to a U-shape, and may be, for example, a semicircular shape or a dogleg shape. That is, the notch 5 protrudes in the direction (direction where the edge seal parts 16 and 17 extend) perpendicular to the two points arranged in the vertical direction on the resin film 3 to be connected. Further, the cut 5 may be formed by perforations.

  The label 4 covers the notch 5, extends in the direction opposite to the protruding direction of the notch 5, and is adhered to the front surface portion 11 and the back surface portion 12. The label 4 is formed in a home base shape when viewed from the front, and has an adhesive sticking part 4a attached to the resin film 3 and a non-adhesive gripping part 4b adjacent to the sticking part 4a. The sticking part 4 a covers the notch 5, and the gripping part 4 b is arranged on the opposite side of the open end of the notch 5. At this time, the gripping portion 4 b is disposed on the back surface portion 12 between the notch 5 and the palm seal portion 13.

  The label 4 has a base material layer (not shown) made of polyethylene terephthalate having a thickness of 10 μm, for example. For example, an adhesive layer (not shown) with a thickness of 30 to 40 μm is formed on one surface of the base material layer of the sticking part 4a and the gripping part 4b, and the gripping part 4b is made of, for example, silicon resin on the adhesive layer. It becomes non-tacky by forming a paste killing layer. Thereby, the thickness of the label 4 is formed to 50 μm or less.

  FIG. 3 shows a front view when the packaging bag 10 is opened. When the user grips the gripping portion 4b and peels off the label 4 in the extending direction, the inside of the cut 5 is pulled by the label 4 and is separated from the back surface portion 12. Thereby, opening of the packaging bag 10 is started, and the notch 5 comprises the opening start part which starts opening. When the label 4 is further pulled, the resin film 3 is broken from both ends of the notch 5 and is torn along with the label 4 in a band shape. When the label 4 peeled off from the back surface portion 12 to the end on the front surface portion 11 is further pulled, the strip-shaped resin film 3 extends from the end of the label 4 and is torn.

  Thereby, the opening part 14 from the back surface part 12 to the front surface part 11 is formed, and the packaging bag 10 is opened. At this time, since the label 4 is attached along the extending direction of the base material layer of the resin film 3, the opening 14 extending from the back surface portion 12 to the entire front surface portion 11 can be easily formed.

  When the packaging bag 10 is opened, the content S is taken out through the opening 14 by tilting the upper part of the opening 14 backward. At this time, since the opening portion 14 is formed from the front surface portion 11 to the back surface portion 12, the content S is hardly caught on the packaging bag 10 when the content S is taken out. Therefore, the convenience of the packaging bag 10 can be improved.

  Moreover, since the opening part 14 is formed in the upper part of the packaging bag 10 at the time of opening of the packaging bag 10, the fall of the content S can be prevented. Moreover, since the label 4 is affixed to a part of the front surface part 11 of the packaging bag 10, the display of a product name, a design, etc. is obstructed rather than the case where the label 4 is affixed to the entire left and right ends of the front surface part 11. Absent.

  Moreover, since the notch 5 is formed in the opposite side to the tilting direction of the palm seal part 13 on the back surface part 12, the user can easily hold the grip part 4b.

  FIG. 4 shows a perspective view of the winding body 1 used for forming the packaging bag 10. An arrow R indicates the winding direction of the resin film 3. The winding body 1 includes a core material 2 made of cylindrical corrugated paper and a strip-shaped resin film 3 wound around the core material 2. The width D of the resin film 3 is about 80 mm.

  In the wound body 1, the stretching direction of the uniaxially stretched polypropylene film of the base layer of the resin film 3 coincides with the direction perpendicular to the winding direction of the resin film 3. A plurality of cuts 5 are formed in the winding direction at a predetermined cycle (for example, a cycle of 143 mm). The notch 5 is formed in a U-shape that is convex in a direction perpendicular to the winding direction, and is disposed on the left side of the central portion in the width direction of the resin film 3. The notch 5 is formed by projecting and connecting two points on the resin film 3 in a direction perpendicular to the winding direction, and both ends of the notch 5 are arranged in the winding direction.

  The labels 4 are attached to the resin film 3 so as to cover the respective cuts 5. Since the thickness of the label 4 is 50 μm or less, the unevenness on the resin film 3 of the wound body 1 can be reduced. Therefore, even if the label 4 is attached to the resin film 3 wound around the core material 2, wrinkles on the resin film 3 can be reduced.

  FIG. 5 shows a process of manufacturing the packaging bag 10 containing the contents S from the wound body 1. An arrow DR indicates the drawing direction of the resin film 3. The winding body 1 configured as described above is attached to a roller of a bag making machine (not shown) such as a pillow packaging machine, and the resin film 3 is moved from the winding body 1 to the arrow DR with the open end 6 of the resin film 3 being the leading end in the drawing direction. Pull in the direction. The content S is arranged on the drawn-out resin film 3, and the cylindrical resin film 3 is formed by guiding the resin film 3 by a guide member (not shown). The contents S are wrapped with a cylindrical resin film 3.

  And the both-sides edge of the cylindrical resin film 3 is heat-bonded mutually with a heat sealer (not shown), and the palm seal part 13 is formed. Thereafter, both ends of the tubular resin film 3 in the drawing direction are thermally bonded by the heat sealer 20. Thereby, the edge seal parts 16 and 17 are formed. Then, both ends of the tubular resin sheet 3 in the drawing direction are cut by the blade 21. Thereby, the packaging bag 10 which packaged the content S is formed continuously.

  Through the above steps, the owner of the bag making machine can easily manufacture the packaging bag 10 that is opened after the label 4 is peeled off using the existing equipment.

  According to the present embodiment, the label 4 covering the opening start portion composed of the notch 5 protruding in one direction extends to the opposite side to the protruding direction of the opening start portion, and is adhered to the front surface portion 11 and the back surface portion 12. Accordingly, when the label 4 is pulled in the extending direction, the resin film 3 is broken from both ends of the opening start portion, and an opening 14 is formed across the front surface portion 11 and the back surface portion 12. Therefore, the contents S are not easily caught on the packaging bag 10 when the contents S are taken out, the contents S can be easily taken out, and the convenience of the packaging bag 10 can be improved.

  Further, a cut 5 is formed on the opposite side of the tilting direction of the palm seal portion 13 on the back surface portion 12. Thereby, the user can easily hold the holding portion 4b.

  The base material layer is formed of a uniaxially stretched polypropylene film (uniaxially stretched film), and the stretching direction of the uniaxially stretched polypropylene film coincides with the direction orthogonal to the direction in which both ends of the cuts 5 are aligned. Thereby, if a user holds the holding part 4b and pulls it in the direction in which the label 4 extends, the resin film 3 is easily broken. Therefore, the easy-openability of the packaging bag 10 can be further improved.

  Moreover, since the base material layer is formed of a uniaxially stretched polypropylene film, the wrinkles of the front surface portion 11 and the back surface portion 12 can be reduced, and the strength of the packaging bag 10 can be easily improved.

  In the present embodiment, the notch 5 is provided in the back surface portion 12, but the notch 5 is provided in the front surface portion 11 instead of the notch 5 in the back surface portion 12, and the notch 5 in the front surface portion 11 is covered with the label 4. Good.

Second Embodiment
Next, a second embodiment of the present invention will be described. 6 and 7 show a front view and a rear view of the packaging bag of the present embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In this embodiment, the packaging bag 10 is a three-side seal type in which the palm seal portion 13 is omitted and the three sides (the upper edge, the lower edge and the right edge in FIG. 6) are thermally bonded. Is different. Other parts are the same as those in the first embodiment.

  The packaging bag 10 is formed by bending the resin film 3 at the bending portion 15 so that the two end edges (the lower end edge and the right end edge in FIG. 6) of the front surface portion 11 and the back surface portion 12 facing each other are edge seal portions 17, 18 respectively. 6 is manufactured by storing the contents S through an upper opening (not shown) in FIG. 6 and then thermally bonding the opening to form the edge seal portion 16. A U-shaped notch 5 that is convex in the direction in which the edge seal portions 16 and 17 extend (left and right in FIG. 7) is formed in the upper left portion (right side in FIG. 7) of the back surface portion 12 of the packaging bag 10. Is done.

  The label 4 covers the notch 5, extends in the direction opposite to the protruding direction of the notch 5, and is adhered to the front surface portion 11 and the back surface portion 12. At this time, the gripping portion 4b of the label 4 is arranged on the back surface portion 12 on the right side (left side in FIG. 7) with respect to the notch 5.

  FIG. 10 shows a front view when the packaging bag 10 is opened. In the packaging bag 10 having the above configuration, when the user grips the gripping part 4b and peels off the label 4 in the extending direction, the resin film 3 is broken like the first embodiment, so that the resin film 3 is broken from the back surface part 12 to the front surface. An opening 14 is formed across the portion 11. Thereby, the packaging bag 10 is opened, and the user can take out the content S through the opening 14.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, since the palm seal portion 13 is omitted, the degree of freedom of arrangement of the cuts 5 is increased.

  The present invention can be used for a packaging bag made of a resin film in which contents are packaged.

DESCRIPTION OF SYMBOLS 1 Winding body 2 Core material 3 Resin film 4 Label 4a Adhering part 4b Holding part 5 Cutting 6 Open end 10 Packaging bag 11 Front part 12 Back part 13 Joint seal part 14 Opening part 15 Bending part 16, 17, 18 End Edge seal part 20 Heat sealer 21 Blade S Contents

Claims (4)

A package that folds a resin film having at least a base material layer and a heat-adhesive resin layer, and heat-adheres the heat-adhesive resin layers on the front and back portions facing each other at both upper and lower edges to seal and store the contents. In the bag
An opening start part formed on one of the front part and the back part;
A strip-shaped label adhered to cover the opening start portion;
Comprising a notch that projects and connects two points in which the opening start portion is arranged in a predetermined direction in a direction orthogonal to each other,
The packaging bag, wherein the label extends to a side opposite to the protruding direction of the opening start portion and is arranged over the front surface portion and the back surface portion. A palm seal portion protruding from the back portion and extending in the vertical direction;
The packaging bag according to claim 1, wherein the opening start portion is formed on the opposite side of the tilting direction of the palm seal portion on the back surface portion.   The packaging bag according to claim 1 or 2, wherein the base material layer is formed of a uniaxially stretched film, and a stretching direction of the uniaxially stretched film coincides with a direction orthogonal to the predetermined direction.   The packaging bag according to claim 3, wherein the base material layer is formed of a uniaxially stretched polypropylene film.

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