JP6524664B2 - Packaging bag - Google Patents

Description

  The present invention relates to a packaging bag.

  Conventionally, in order to make it easy to open the packaging bag containing the contents, notches are provided at the left and right ends of the planned opening line of the packaging bag or at either end, and the half cut is linear on the planned opening line. There was a packaging bag provided on each of the front and back two films of the packaging bag. These packaging bags can be easily torn and opened by pinching the top and bottom of the notch with a finger and pulling along the straight half cut.

  However, such a packaging bag can be easily opened, but when trying to open the mouth to take out the contents, the torn opening line of the packaging bag is in the same position on the front and back film, Although it was difficult to put a finger between the overlapped front and back films even if the front and back films were respectively pinched with the fingers to open the mouth, it was difficult to open the mouth easily.

  In order to avoid this, the front film and the back film are provided with different opening scheduled lines so that the opening line after opening is not in the same position on the front and back films, it is easy to pick with a finger and the opening is easily made. There was a packaging bag.

  For example, a corrugated cut line is formed on the front film and the back film of the packaging bag by half cutting so that the wave pitch of the front film and the back film cross each other, or only the film on one side is corrugated A deformation perforation-like score line is provided, and the other film forms a substantially straight score line, and the opening line of the front film and the back film after opening does not completely overlap, and the opening of the opening There was a packaging bag which made opening easy (patent documents 1).

  In addition, each of the front film and back film of the packaging bag, the front side opening scheduled line and the back side opening scheduled line are provided in a straight line toward the inside from the left and right ends of the packaging bag by half cut lines. The package bag has a convex curve connecting the both ends of the package, and the reverse side scheduled opening line connects the two ends of the straight curve, and has a convex curve downward, so that it can be easily picked and opened after opening. Patent Document 2).

  The opening has a resealing means, an easy opening means is provided between the resealing means and the top seal portion, and the easy opening means includes an easy opening processing portion provided on the outer edge of the left and right side seal portions, and a surface lamination A surface half cut line a having a convex shape on the body, a surface half cut line b having a convex shape on the surface laminate, and a straight back surface half cut provided on the back surface laminate The surface half cut line a and the surface half cut line b are vertically symmetrical about the back surface half cut line so that the convex portion is on the outer side, and these two surface half cut lines are In all cases, there is a packaging bag characterized in that one point on the left side seal portion is a start point, and one point on the right side seal portion is an end point (Patent Document 3).

  Known documents are shown below.

JP, 2001-240074, A JP 2005-289396 A JP, 2014-51310, A

  Although these packaging bags mentioned above provide different opening schedule lines on the front film and the back film so that the opening line after opening is not in the same position on the front and back films, it is not always easy to pick with a finger , There was a risk that the tearing open line was deviated from the planned open line such as half cut line.

  The present invention has been made in view of the above circumstances, and provides a packaging bag which is formed with the opening lines of the front and back films shifted when opened, easy to pick with fingers, and easy to open. As an issue.

The present invention has been made in view of the problems, and the invention according to claim 1 is a packaging bag in which a front film and a back film are stacked, and the front film and the peripheral portion of the back film which are stacked are sealed. ,
Each of said backing film and the table film, the easily tearable lines of inducing cleavage for opening, provided at a different front scissile line and back easily tearable lines of the form,
In the front side easy-cut line, an upper front-side easy-cut line formed by arranging a plurality of small easy-cut lines via a connecting portion and a table-side easy-cut line are vertically arranged.
The back side easy-cut line is disposed between the upper front side easy-cut line and the below-mentioned table side easy-cut line,
The small easy-to-cut line is a straight horizontal portion directed in the horizontal direction, and an inclined portion obliquely on the side facing the upper front-side easy-cut line and the following table-side easy-cut line When the packaging bag is torn open, the tear-open line of the front film is guided to the upper surface easy cut line or the following table easy cut line, and these upper surface easy cut line or the following table side easy cut line Also when it deviates from the above, it is a packaging bag characterized by being guided to one of the upper front side easy cutting line and the following table side easy cutting line.
The invention according to claim 2 is a packaging bag in which a front film and a back film are laminated, and the superposed front film and the peripheral portion of the back film are sealed,
Each of said backing film and the table film, the easily tearable lines of inducing cleavage for opening, provided at a different front scissile line and back easily tearable lines of the form,
In the front side easy-cut line, an upper front-side easy-cut line formed by arranging a plurality of small easy-cut lines via a connecting portion and a table-side easy-cut line are vertically arranged.
The back side easy-cut line is disposed between the upper front side easy-cut line and the below-mentioned table side easy-cut line,
The small easy-to-cut line is a straight horizontal portion directed in the horizontal direction, and an inclined portion obliquely on the side facing the upper front-side easy-cut line and the following table-side easy-cut line It is a packaging bag characterized by having it, the said horizontal part is short, and the said inclination part is long.

In the invention according to claim 3 of the present invention, the back side easy cutting line is disposed between the upper front side easy cutting line and the below table side easy cutting line with one straight line or two straight lines positioned above and below. It is a packaging bag of Claim 1 or 2 characterized by the above-mentioned.

The invention of claim 4 of the present invention, according to claim 1 to 3 wherein one or both of the left and right of the seal portion of the front side easily cut line and the rear side easily tearable lines, wherein the tear initiation is provided It is a packaging bag as described in any of .

The invention of claim 5 of the present invention can be packaged according to claim 4, characterized in that it comprises a said upper front side toward the easy-cut line or the table-side easy-to-break lines, tear inducing strain relief line from said tear initiation It is a bag.

  When the packaging bag of the present invention is opened, the opening lines of the front and back films are formed so as to be shifted, so that it is easy to pick with a finger and the opening can be facilitated.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which showed typically 1st Embodiment of the packaging bag of this invention in the front. It is explanatory drawing which showed typically 2nd Embodiment of the packaging bag of this invention in the front. It is explanatory drawing which showed typically 3rd Embodiment of the packaging bag of this invention in the front. It is explanatory drawing which showed typically an example of the laminated body used for the packaging bag of this invention by the cross section.

First Embodiment
Hereinafter, a first embodiment for carrying out the present invention will be described.
FIG. 1 is an explanatory view schematically showing the first embodiment of the packaging bag of the present invention in front.

  In the packaging bag 100 of the first embodiment, as shown in FIG. 1, the front film 1 and the back film 2 are overlapped, and the peripheral portions of the front film 1 and the back film 2 are sealed. , A right side seal portion 4, a top seal portion 5, and a bottom seal portion 6 are provided.

  Then, in the vicinity of the top seal portion 5, an easy-cut line for guiding a cut for opening is provided. Easy cutting lines are provided on the front film 1 and the back film 2 respectively with the front side easy cutting line 7 and the rear side easy cutting line 8 which have different shapes, and the front side easy cutting line 7 is the upper front side easy cutting line 7 a The easy-to-cut lines 7b are formed to be vertically arranged to be opposed and arranged side by side.

  A plurality of small easy cutting lines 71 are formed side by side with a connecting portion between the upper front side easy cutting line 7 a and the lower side easy cutting line 7 b, and the small easy cutting line 71 is a straight horizontal portion 711 extending in the horizontal direction. And an inclined portion 712 obliquely facing in the direction of the opposing side of the upper front easy cutting line 7a provided in the upper and lower direction and the lower easy cutting line 7b.

  The back side easy cut line 8 is formed in a horizontal single straight line. And, also on the left side seal part 3 and the right side seal part 4 on the left and right of the front side easy cutting line 7 and the rear side easy cutting line 8, a tearing start part 9 is provided inward from the outer end. . In addition, a linear oblique open guiding easy cutting line 7c is provided so that the cutting proceeds from the tear start portion 9 to the upper front side easy cutting line 7a or the following table side easy cutting line 7b.

  These easily cut lines are provided by half cut lines. And since the front side easy-cutting line 7 which consists of a half cut line is provided in this way, the tearing open tearing line does not remove | deviate from the front side easy-cutting line 7. FIG.

  Further, since the back side easy-cutting line 8 is also composed of a straight half-cut line provided horizontally, the back-side easy-cutting line 8 also does not come apart from the tearing-opened opening line.

  In the present embodiment, the tear start portion 9 is provided by a V-notch. However, the present invention is not limited to this, and may be provided by a notch or a notch of another shape or a scratch processing formed of short straight lines in the lateral direction.

  Thus, the front easy cutting line 7 of the front film 1 of the packaging bag 100 is composed of the upper front easy cutting line 7a and the following table easy cutting line 7b, and the upper front easy cutting line 7a and the following table easy cutting line 7b are respectively As described above, since the plurality of small easy cutting lines 71 are formed side by side through the connecting portion, the tearing open line of the front film 1 is a tearing person when it is torn from the tearing start portion 9 The direction and direction of the tearing force are wrinkled, and it is torn along the small easy cutting line 71 of the upper surface easy cutting line 7a, or torn along the small easy cutting line 71 of the following easy cutting line 7b. To It can be considered and corrected each time.

  On the other hand, since the back film 2 is torn along the horizontal straight line easy-to-cut line 8 and the opening line becomes straight, the opening line of the front film 1 and the back film are different from the opening line of the front film 1 Unlike the opening line of 2, there is a step. Therefore, when opening the mouth, it is easy to pick with a finger and the opening can be made easy.

Second Embodiment
Hereinafter, a second embodiment for carrying out the present invention will be described.
FIG. 2 is an explanatory view schematically showing the second embodiment of the packaging bag of the present invention in front.

In the packaging bag 200 of the second embodiment, as in the packaging bag 100, as shown in FIG. 2, the front film 1 and the back film 2 are laminated, and the peripheral portions of the laminated front film 1 and back film 2 are sealed. And a left side seal portion 3, a right side seal portion 4, a top seal portion 5, and a bottom seal portion 6 are provided.

  Then, in the vicinity of the top seal portion 5, an easy-cut line for guiding a cut for opening is provided. The easy cutting lines are provided on the front film 1 and the back film 2 respectively with the front easy cutting line 7 and the rear easy cutting line 8 which have different shapes, and the front easy cutting line 7 is the upper front side like the packaging bag 100. The easy-to-cut line 7a and the below-described easy-to-cut side line 7b are formed side by side vertically.

  A plurality of small easy cutting lines 71 are formed side by side with a connecting portion between the upper front side easy cutting line 7 a and the lower side easy cutting line 7 b, and the small easy cutting line 71 is a straight horizontal portion 711 directed horizontally. It comprises an upper front easy cutting line 7a provided facing up and down, and an inclined portion 712 directed obliquely in the direction opposite to the following easy cutting line 7b.

  The back side easy cut line 8 is formed in horizontal two straight shapes. And, also on the left side seal part 3 and the right side seal part 4 on the left and right of the front side easy cutting line 7 and the rear side easy cutting line 8, a tearing start part 9 is provided inward from the outer end. . In addition, a linear oblique open guiding easy cutting line 7c is provided so that the cutting proceeds from the tear start portion 9 to the upper front side easy cutting line 7a or the following table side easy cutting line 7b.

  These easily cut lines are provided by half cut lines. And since the front side easy-cutting line 7 which consists of a half cut line is provided in this way, the tearing open tearing line does not remove | deviate from the front side easy-cutting line 7. FIG.

  Further, since the back side easy-cutting line 8 is also composed of two upper and lower straight half-cut lines provided horizontally, the back-side easy cutting line 8 also does not come apart from the tear-opened open line.

  In the present embodiment, the tear start portion 9 is provided by scratch processing consisting of a short straight line in the lateral direction. The invention is not limited to this, and the tear start portion 9 may be provided by notches such as a V notch and an I notch or notches.

  Thus, the front easy cutting line 7 of the front film 1 of the packaging bag 100 is composed of the upper front easy cutting line 7a and the following table easy cutting line 7b, and the upper front easy cutting line 7a and the following table easy cutting line 7b are respectively As described above, since the plurality of small easy cutting lines 71 are formed side by side through the connecting portion, the tearing open line of the front film 1 is a tearing person when it is torn from the tearing start portion 9 The direction and direction of the tearing force are wrinkled, and it is torn along the small easy cutting line 71 of the upper surface easy cutting line 7a, or torn along the small easy cutting line 71 of the following easy cutting line 7b. To It can be considered and corrected each time.

  On the other hand, since the back film 2 is torn along either of the two upper and lower straight lines of the back side easy-cutting line 8, unlike the opening line of the front film 1, the opening line of the front film 1 and the back film 2 Unlike the opening line of, there are steps. Therefore, when opening the mouth, it is easy to pick with a finger and the opening can be made easy.

Third Embodiment
Hereinafter, a third embodiment for carrying out the present invention will be described.
FIG. 3 is an explanatory view schematically showing the third embodiment of the packaging bag of the present invention in front.

  In the packaging bag 300 of the third embodiment, as in the packaging bag 100, as shown in FIG. 3, the front film 1 and the back film 2 are laminated, and the peripheral portions of the laminated front film 1 and back film 2 are sealed. And a left side seal portion 3, a right side seal portion 4, a top seal portion 5, and a bottom seal portion 6 are provided.

  Then, in the vicinity of the top seal portion 5, an easy-cut line for guiding a cut for opening is provided. Easy cutting lines are provided on the front film 1 and the back film 2 respectively with the front side easy cutting line 7 and the rear side easy cutting line 8 which have different shapes, and the front side easy cutting line 7 is the upper front side easy cutting line 7 a The easy-to-cut lines 7 b are formed to be arranged side by side vertically.

  A plurality of small easy cutting lines 71 are formed side by side with a connecting portion between the upper front side easy cutting line 7 a and the lower side easy cutting line 7 b, and the small easy cutting line 71 is a straight horizontal portion 711 directed horizontally. It comprises an upper front easy cutting line 7a provided facing up and down, and an inclined portion 712 directed obliquely in the direction opposite to the following easy cutting line 7b. In the packaging bag 100, the horizontal portion 711 is long and the inclined portion 712 is short, but in the packaging bag 300, the horizontal portion 711 is short and the inclined portion 712 is long.

  The back side easy cut line 8 is formed in a horizontal single straight line. And, also on the left side seal part 3 and the right side seal part 4 on the left and right of the front side easy cutting line 7 and the rear side easy cutting line 8, a tearing start part 9 is provided inward from the outer end. . In addition, a linear oblique open guiding easy cutting line 7c is provided so that the cutting proceeds from the tear start portion 9 to the upper front side easy cutting line 7a or the following table side easy cutting line 7b.

  These easily cut lines are provided by half cut lines. And since the front side easy-cutting line 7 which consists of a half cut line is provided in this way, the tearing open tearing line does not remove | deviate from the front side easy-cutting line 7. FIG.

  Further, since the back side easy-cutting line 8 is also composed of a straight half-cut line provided horizontally, the back-side easy-cutting line 8 also does not come apart from the tearing-opened opening line.

  In the present embodiment, the tear start portion 9 is provided by a V-notch. However, the present invention is not limited to this, and may be provided by a notch or a notch of another shape or a scratch processing formed of short straight lines in the lateral direction.

  Thus, the front easy cutting line 7 of the front film 1 of the packaging bag 300 is composed of the upper front easy cutting line 7a and the following table easy cutting line 7b, and the upper front easy cutting line 7a and the following table easy cutting line 7b are respectively As described above, since the plurality of small easy cutting lines 71 are formed side by side through the connecting portion, the tearing open line of the front film 1 is a tearing person when it is torn from the tearing start portion 9 The direction and direction of the tearing force are wrinkled, and it is torn along the small easy cutting line 71 of the upper surface easy cutting line 7a, or torn along the small easy cutting line 71 of the following easy cutting line 7b. To It can be considered and corrected each time. In addition, since the easy-to-cut line 711 is short and the easy-to-cut line portion 712 is long, the upper front side easy-to-cut line 7a to the following table side easy-to-cut line 7b or the following table side easy-to-cut line 7b Transition of the opening line to line 7a is likely to occur.

  On the other hand, since the back film 2 is torn along the horizontal straight line easy-to-cut line 8 and the opening line becomes straight, the opening line of the front film 1 and the back film are different from the opening line of the front film 1 Unlike the opening line of 2, there is a step. Therefore, when opening the mouth, it is easy to pick with a finger and the opening can be made easy.

The materials used and processing will be described below.
FIG. 4: is explanatory drawing which showed typically an example of the laminated body used for the packaging bag of this invention by the cross section.

  The front film 1 and the back film 2 of the packaging bag of the present invention are made of a laminated film 110 in which a base material layer 111 and a sealant layer 112 are laminated as shown in FIG. The base material layer 111 and the sealant layer 112 may be further laminated in multiple layers.

  For the base material layer 111, a biaxially stretched or uniaxially stretched, unstretched plastic film of a resin such as nylon, polyethylene terephthalate or polypropylene can be preferably used. The thickness in that case is preferably about 12 to 50 μm.

  Alternatively, a vapor deposition film in which a metal or an inorganic substance is vapor deposited may be used as the base material layer 111. Alternatively, these may be combined to provide the base material layer 111 in multiple layers. Furthermore, metal foil such as aluminum foil can also be provided as one layer of the multilayer base material layer 111.

  For the sealant layer 112, a heat melting resin such as polypropylene, low density polyethylene, linear low density polyethylene, or acid-modified polyethylene is used. Also, a multilayer coextruded film may be used for the sealant layer 112. As the sealant layer 112 of the multi-layer coextrusion film, one in which a low density polyethylene or a high density polyethylene is used as an intermediate layer and a layer of linear low density polyethylene is provided on both sides is preferably used.

  The thickness of the sealant layer 112 is adjusted depending on the amount of contents, but a thickness of 80 μm to 200 μm is preferable, and more preferably, 100 μm to 150 μm can be preferably used.

  In addition, a picture print layer can be provided on the back surface of the base layer 111 or the like. Moreover, in the case of the multilayer base material layer 111, it is preferable to provide a design print layer on the back surface of the film of the outermost layer of the base material layer 111. Although the printing system which provides a picture printing layer is not specifically limited, Usually, gravure or flexographic printing is used.

  The easy cutting line can be provided by a half cut line. The half cut line 113 can be inserted into the base material layer 111 from the front side as shown in FIG. 4A using a metal blade such as a roll. In this case, even if the blade is in the middle of the substrate layer 111, the blade may be in the middle of the sealant layer 112 beyond the substrate layer 111.

  Alternatively, the half cut line 113 can be provided by laser processing in which the half cut line 113 is irradiated from the side of the base material layer 111. A carbon dioxide gas laser is preferably used as the laser to be used. In the case where the half cut line is provided by laser processing, it can be provided in the inner layer of the base material layer 111 as shown in FIG. 4B without being provided in the outermost layer of the multilayer base material layer 111.

  The packaging bag of the present invention is a four-way sealing bag in each of the embodiments described above, but is not limited to this, and may be a standing pouch or a three-way sealing bag in which a top portion or a base portion is folded. . It may be a bag provided with a side seal portion.

  As described above, in the packaging bag of the present invention, the front film and the back film are provided with easy cutting lines for inducing cutting for opening by the front easy cutting line and the rear easy cutting line having different shapes, The easy-to-cut line is formed by arranging the upper front-side easy-cut line and the following table-side easy-cut line in the vertical direction.

  The upper front-side easy-cutting line and the lower-side easy-cutting-line are formed side by side with a plurality of small easy-cutting lines via connecting parts, and the small easy-cutting lines are horizontally opposed to the horizontal part in the form of a straight line. It consists of an inclined part which goes diagonally in the direction of the opposite side of the provided upper surface side easy cutting line and the following table side easy cutting line.

Moreover, the back side easy-cut line is formed in one horizontal line or two upper and lower straight lines. Then, a linear oblique open guiding easy cutting line is provided so that the cutting proceeds from the tear start portion to the upper front side easy cutting line or the following table side easy cutting line.

  For this reason, when tearing open in the lateral direction, the tearing-opened line of the front film has wrinkles in the direction and direction of the tearing force of the tearing person, and the small easy-cutting line of the upper front side easy-cutting line It is torn along along the small easy-to-cut line of easy-to-cut line in the table below. The person opening the bag can tear it by considering and correcting it each time.

  On the other hand, the back film is torn along the back side easy cutting line different in shape from the front side easy cutting line, and there is a difference in level between the opening line of the front film and the opening line of the back film. Therefore, when opening the mouth, it is easy to pick with a finger and the opening can be made easy.

100, 200, 300 ... packaging bag 1 ... front film 2 ... back film 3 ... left side seal part 4 ... right side seal part 5 ... top seal part 6 ... bottom Seal part 7 ··· front side easy cutting line 7a ··· upper front side easy cutting line 7b ··· table side easy cutting line 71 ··· small easy cutting line 711 · · · horizontal part 712 · · · inclined part 7c · · · · · Opening induction easy cutting line 8 · · · back side easy cutting line 9 · · · tear start portion 110 · · · laminated film 111 · · · base layer 112 · · · sealant layer 113 · · · half cut line

Claims (5)

A packaging bag in which a front film and a back film are laminated and the peripheral portions of the laminated front film and the back film are sealed,
Each of said backing film and the table film, the easily tearable lines of inducing cleavage for opening, provided at a different front scissile line and back easily tearable lines of the form,
In the front side easy-cut line, an upper front-side easy-cut line formed by arranging a plurality of small easy-cut lines via a connecting portion and a table-side easy-cut line are vertically arranged.
The back side easy-cut line is disposed between the upper front side easy-cut line and the below-mentioned table side easy-cut line,
The small easy-to-cut line is a straight horizontal portion directed in the horizontal direction, and an inclined portion obliquely on the side facing the upper front-side easy-cut line and the following table-side easy-cut line When the packaging bag is torn open, the tear-open line of the front film is guided to the upper surface easy cut line or the following table easy cut line, and these upper surface easy cut line or the following table side easy cut line Also when it deviates from the above, a packaging bag characterized in that it is guided to one of the upper front side easy cutting line and the following table side easy cutting line. A packaging bag in which a front film and a back film are laminated and the peripheral portions of the laminated front film and the back film are sealed,
Each of said backing film and the table film, the easily tearable lines of inducing cleavage for opening, provided at a different front scissile line and back easily tearable lines of the form,
In the front side easy-cut line, an upper front-side easy-cut line formed by arranging a plurality of small easy-cut lines via a connecting portion and a table-side easy-cut line are vertically arranged.
The back side easy-cut line is disposed between the upper front side easy-cut line and the below-mentioned table side easy-cut line,
The small easy-to-cut line is a straight horizontal portion directed in the horizontal direction, and an inclined portion obliquely on the side facing the upper front-side easy-cut line and the following table-side easy-cut line A packaging bag characterized in that the horizontal portion is short and the inclined portion is long.   The back side easy-cutting line is one or two straight lines positioned above and below, and is disposed between the upper front side easy-cutting line and the table below easy-cutting line. Packaging bag described in.   The packaging bag according to any one of claims 1 to 3, wherein a tearing start portion is provided on one or both of the front side easy cutting line and the left and right sealing portions of the rear side easy cutting line.   5. The packaging bag according to claim 4, further comprising an opening induction easy cutting line extending from the tear start portion to the upper front side easy cutting line or the table lower side easy cutting line.

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