JP2017124873A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag that can be torn off along cutting lines by devising shapes of the cutting lines formed on both sides of the packaging bag and a combination.SOLUTION: The packaging bag is formed of a laminate having outer layers having left and right side edge thermal adhesion parts at opposing edges, an intermediate layer and an inner layer. At one outer layer of the laminate is formed a continuous first cutting line at the same position in a vertical direction as the left and right side edge thermal adhesion parts, which is parallel to the parts and has a starting point and an ending point at either a left or right outer edge in the parts, while at the other outer layer of the laminate is formed a continuous second cutting line at the same position in the vertical direction as the left and right side edge thermal adhesion parts, which is parallel to the parts and has a starting point and an ending point at either the left or right edge in the parts so as to differ in a formation position from the first cutting line in a planar view, so that a step is generated in a cut-off opening part when the bag is opened by being torn off in a lateral direction with the first cutting line and the second cutting line being starting points.SELECTED DRAWING: Figure 1

Description

  The present invention can be easily torn and opened, and the tear opening when it is torn and opened is beautiful and the outline of the tear opening is different so that a step for easily opening with fingers can be formed. The present invention relates to a packaging bag, and further to a packaging bag having a resealing function by providing a synthetic resin bite composed of a male member and a female member that are engaged with each other at opposing positions on the inner surface of the packaging bag. .

  Conventionally, in a three-side seal type, four-side seal type, or standing type packaging bag, the outer edge of the front side laminate constituting the packaging bag starts from the outer edge of the left edge thermal bonding portion, and the right edge heat A continuous first cut line is formed with the outer edge of the bonded portion as the end point (the position of the starting point and the end point in the height direction [the direction parallel to the left and right side edge thermal bonding portions] is the same), and the packaging bag is configured. In the outer layer of the back side laminate, the outer edge of the left edge thermal bonding part is the starting point, and the outer edge of the right edge thermal bonding part is the end point (the height direction of the starting point and end point [parallel to the left and right side edge thermal bonding parts A second cut line that is continuous as the direction of the direction] is formed, and a part of the formation positions of the first cut line and the second cut line on the rectangular plane of the laminate in a state where the packaging bag is viewed in plan By making it different, the first cut line and the second cut line When the upper end side of the packaging bag is torn open in the width direction (the direction orthogonal to the left and right side edge thermal bonding portions), the outer side of the cut surface of the laminate on the front side that forms the tear opening and the back side lamination There has been proposed a packaging bag in which an opening when a content is taken out is made easier by making a difference in a tear opening by making the outline of a cut surface of the body different (see, for example, Patent Document 1).

  Furthermore, a packaging bag is also proposed in which a step is created in the same kind of tear opening to facilitate opening when the contents are taken out, and a packaging bag having a reseal function (see, for example, Patent Document 2). ).

  Here, as in the second embodiment of the packaging bag described in Patent Document 1 or the packaging bag described in Patent Document 2, one of the first cut line and the second cut line (for example, the back side) is used. A straight cut line of one of the laminates along the straight cut line, with a straight cut line and the other (for example, the front side) an irregular (non-linear) cut line swollen to the lower end side. A tongue-shaped step due to a combination of a general outline and an arc-shaped outline of the cut surface of the other laminate along the cut line bulging on the lower end side is most desirable as a step for easily opening with fingers It is said that.

  However, when opening the packaging bag, if the surface with the irregular cut line of the packaging bag is turned forward, the area on the upper end side from the cut line is picked and torn forward, along the irregular cut line An arc-shaped tear line that swells to the lower end side is formed, but some users open the bag with the irregular cut line side of the packaging bag facing forward and the upper end from the cut line. In some cases, the tearing line may be removed from the irregular cut line, and the initially planned tongue piece-shaped step may not be formed.

JP 2005-289396 A JP 2003-104394 A

  The present invention can be easily torn and opened, and the tear opening when it is torn and opened is beautiful, and the outer surface of the laminate on the front and back sides of the tear opening is different, resulting in a difference in level. A packaging bag having at least an outer layer that can be opened in the middle, an intermediate layer made of aluminum foil, and an inner layer made of a heat-adhesive resin, and the cut formed on the front and back laminates constituting the packaging bag By devising the shape of the line of sight and the combination thereof, the packaging bag can be torn without tearing away from the cut line even if it tears in the tearing direction at the time of opening, specifically the front side or the back side The first task is to provide

  Furthermore, it is a second object of the present invention to provide a packaging bag having a resealing function by providing a synthetic resin occlusion device composed of a male member and a female member that are engaged with each other at opposite positions on the inner surface of the packaging bag. Let it be an issue.

In order to achieve the above object, the present inventor described in claim 1
Overlaying the inner layers of a rectangular laminate having at least an outer layer, an intermediate layer made of aluminum, and an inner layer made of a heat-adhesive resin,
At least an edge thermal bonding portion is formed at an opposing position of a pair of opposed edges, and the starting point is formed on one outer layer of the laminated body from one outer edge or the vicinity of the outer edge of the edge thermal bonding portion. And forming a first cut line having the end point in the vicinity of the other outer edge or the outer edge that has the same position in the direction parallel to the edge thermal bonding portion,
In the other outer layer of the laminate, starting from one outer edge or the vicinity of the outer edge of the edge thermal bonding portion, the other outer edge or the vicinity of the outer edge having the same position in the direction parallel to the starting edge and the edge thermal bonding portion Forming a second cut line with ending at
By making the formation positions of the first cut line and the second cut line different in a plan view of the laminate, the upper end side of the packaging bag is moved along the first cut line and the second cut line. When a tear opening is made in a direction orthogonal to the edge thermal bonding portion, the outline of one cut surface of the laminate forming the tear opening is different from the outline of the other cut surface of the laminate. A packaging bag that creates a step in the tear opening,
The first cut line is
A plurality of score lines on the starting side extending from the starting point toward the inner edge of the edge thermal bonding portion and extending so as to approach the inner edge of the edge thermal bonding portion on the starting point side,
A plurality of score lines on the end point side extending in the direction from the end point toward the inner edge of the edge thermal bonding portion and extending so as to approach the inner edge of the edge thermal bonding portion on the end point side; and
Arranged between a plurality of cut lines on the start side and a plurality of cut lines on the end point side, branching from the close end side of the plurality of cut lines on the start side and branching a plurality of cuts on the end side And at least a plurality of central cut lines converging on the close end side of the line of sight,
The second cut line is
A plurality of score lines on the starting side extending from the starting point toward the inner edge of the edge thermal bonding portion and extending so as to approach the inner edge of the edge thermal bonding portion on the starting point side,
A plurality of score lines on the end point side extending in the direction from the end point toward the inner edge of the edge thermal bonding portion and extending so as to approach the inner edge of the edge thermal bonding portion on the end point side; and
A single cut on the central side that proceeds in a direction orthogonal to the edge thermal bonding portion from a portion adjacent to the plurality of cut lines on the start side and reaches a portion adjacent to the plurality of cut lines on the end point side And at least a line of sight,
The formation position of the plurality of central score lines constituting the first score line in the planar view of the laminate is composed of a score line bulging on the upper end side and a score line bulging on the lower end side,
One score line on the center side of the second score line passes through a position corresponding to between the score line bulging on the upper end side and the score line bulging on the lower end side of the first score line. It is characterized by.

Moreover, the present invention described in claim 2 is the packaging bag according to claim 1,
The first cut line is
A single cut on the starting point side that reaches inward from the inner edge of the edge thermal bonding portion on the starting point side, proceeding in a direction orthogonal to the edge thermal bonding portion from a portion adjacent to the plurality of cut lines on the starting point side Eyes
A single cut on the end point side that reaches inward from the inner edge of the end edge thermal bonding portion on the end point side, proceeding in a direction orthogonal to the end edge thermal bonding portion from a portion adjacent to the plurality of cut lines on the end point side And further,
The plurality of score lines on the central side branch from the end of one score line on the start point side and converge at the end of one score line on the end point side.

Moreover, this invention of Claim 3 WHEREIN: In the packaging bag of Claim 1 or 2,
A synthetic resin occlusion device comprising a protruding male member and a concave female member that mesh with each other at opposing positions on the inner surface of the packaging bag at the lower end side of the first cut line and the second cut line. Provided,
The male member and the female member are engaged to provide a reseal function.

  According to this invention, when the surface provided with the first cut line of the packaging bag is directed toward the front, the region on the upper end side from the first cut line is picked with fingers and torn toward the front, two sheets constituting the packaging bag are formed. Among the laminates, the laminate on the front side is one of a plurality of cut lines on the starting side, a cut line that swells to the lower end side among a plurality of cut lines on the central side that follows this, and a starting point that follows this When a tear line is formed along any one of the plurality of cut lines on the side, and conversely, when the upper end side region from the first cut line is picked and torn back, two layers constituting the packaging bag Among the body, the front-side laminated body is one of a plurality of cut lines on the start side, a cut line that swells to the upper end side among a plurality of cut lines on the center side that follows this, and the start side that follows this A tear line is formed along one of the multiple score lines. It is possible.

  Furthermore, a synthetic resin occlusion device comprising a protruding male member and a concave female member that mesh with each other is provided at a position opposite to the inner surface of the packaging bag on the lower end side of the cut line of the packaging bag. And it can be set as the packaging bag provided with a resealing function by biting the said male member and the said female member.

It is a top view which shows diagrammatically the positional relationship of the cut line of the packaging bag concerning this invention, and an occlusion tool. It is a figure which shows the XX sectional view of FIG. It is the principal part top view seen from the near side which shows diagrammatically 1st Embodiment of the score line formed in the packaging bag concerning this invention. (A) is a figure which shows the YY sectional view schematically of FIG. 3, (b) is a figure which shows the ZZ sectional view schematically of FIG. It is the principal part top view seen from the near side which shows diagrammatically 2nd Embodiment of the score line formed in the packaging bag concerning this invention. It is the principal part top view seen from the near side which shows diagrammatically 3rd Embodiment which combined the V-shaped notch with the cut line formed in the packaging bag concerning this invention. It is the principal part top view seen from the near side which shows diagrammatically 4th Embodiment which combined the U-shaped notch with the score line formed in the packaging bag concerning this invention. It is an opening figure of the state which left one side edge thermal adhesive part of the packaging bag shown in FIG. It is the principal part top view seen from the near side which shows diagrammatically 5th Embodiment of the score line formed in the packaging bag concerning this invention. It is the principal part top view seen from the near side which shows diagrammatically 6th Embodiment of the score line formed in the packaging bag concerning this invention. It is the principal part top view seen from the near side which shows diagrammatically 7th Embodiment of the score line formed in the packaging bag concerning this invention.

The above-described present invention will be described in detail below with reference to the drawings.
In addition, in this paragraph, the correspondence relationship with the constituent elements defined in the scope of claims with respect to the constituent elements with reference numerals is described in parentheses.
1 is a plan view schematically showing the positional relationship between a cut line and a bite of a packaging bag according to the present invention, FIG. 2 is a diagram schematically showing a cross section taken along line XX of FIG. 1, and FIG. The principal part top view seen from the near side which shows diagrammatically 1st Embodiment of the cut line formed in this packaging bag, FIG.4 (a) is a figure which shows the YY sectional view schematically of FIG. b) is a diagram schematically showing a cross section taken along the line ZZ in FIG. 3, and FIG. 5 is a plan view of the main part as seen from the front side schematically showing a second embodiment of the score line formed in the packaging bag according to the present invention. FIG. 6, FIG. 6 is a plan view of an essential part seen from the front side schematically illustrating a third embodiment in which a V-shaped notch is combined with a cut line formed in a packaging bag according to the present invention, and FIG. The principal part top view seen from the near side which shows diagrammatically 4th Embodiment which combined the U-shaped notch with the score line formed in this packaging bag, FIG. 8 is the packaging bag shown in FIG. 1 is a packaging bag in which one side edge thermal bonding part is left, in which 1 is a packaging bag, 2 is an edge thermal bonding part, 2 'is a left / right edge thermal bonding part, and 2 "is an upper side.・ Lower edge thermal bonding part, 3 is a first cut line, 3 ′ is a second cut line, 10 is a laminate, 11 is an outer layer, 12 is an intermediate layer, 13 is an inner layer, 20 is a synthetic resin bite, 21 Is a male member of a convex line, 22 is a female member of a concave line, 30A is a first-first start-side convergent cut line (first cut line / a plurality of cut lines on the start side), and 30B is 1-1. End point side converged cut line (first cut line / multiple cut lines on the end point side), 30C is 1-2 first start side straight cut line (first cut line / one cut side cut line) ), 30D is a first to second end-side straight cut line (first cut line / one-end-side cut line), and 30E and 30G are first to third upper-end cut lines (first cut line / first cut line / Multiple cut lines on the center side / above 30F and 30H are the first to third lower end side cut lines (the first cut line, a plurality of cut lines on the center side, the cut line that swells to the lower end side), and 31A is the second to first starting point. Side convergent cut line (second cut line / multiple cut lines on start side), 31B is 2-1 end point side convergent cut line (second cut line / multiple cut lines on end point side) , 31C is a 2-2 start point side straight cut line (second cut line / part of one central cut line), 31D is a 2-2 end point side straight cut line (second cut line) Part of one cut line at the center and the center side), 31E is the second to third center side straight cut line (a part of the second cut line and one center cut line), and N1 is V A letter-shaped notch, N2 is a U-shaped notch, α is a cut line forming region, and β is a bite forming region.

  FIG. 1 is a plan view schematically showing the positional relationship between a score line and a bite of a packaging bag according to the present invention, and FIG. 2 is a diagram schematically showing a cross section taken along line XX of FIG. The outer layer 11, the intermediate layer 12 made of aluminum foil, and the inner layer 13 made of a heat-adhesive resin layer are laminated, the inner layers 13 of the rectangular laminate 10 are overlapped with each other, and the four peripheral edges are thermally bonded. It is a four-side seal type packaging bag sealed with a heat bonding part 2. In addition, in this specification, in the said edge thermal bonding part 2, it is located in the edge part of the left-right direction in FIG. 2 is referred to as the left and right edge thermal bonding portions 2 ', and the pair of edge thermal bonding portions 2 that are located in the vertical direction in FIG. -The lower end edge heat bonding part 2 ". The packaging bag 1 is in the state of the packaging bag 1 in a plan view of one outer layer and the other outer layer of the rectangular laminate 10 constituting the packaging bag 1, respectively. , The cut line forming region α in which the first cut line 3 and the second cut line 3 ′ are formed so as to be different from each other, and the lower end side (lower end edge thermal bonding portion 2 ″ side) of the cut line forming region α. A synthetic resin occlusion device 20 comprising a protruding male member 21 and a concave female member 22 that mesh with each other is provided. Composed of a zipper-forming region β to be.

  Next, embodiments of the cut lines (the first cut line 3 and the second cut line 3 ′) formed in the packaging bag 1 will be specifically described in detail. FIG. 3 is a plan view of an essential part seen from the front side schematically illustrating the first embodiment of the cut line formed in the packaging bag according to the present invention, and FIG. 4 (a) is a cross-sectional view taken along line YY of FIG. FIG. 2B is a diagram schematically showing a cross section taken along the line ZZ in FIG. 3, and the cut line is formed on the outer layer 11 on one side (front side) of the laminated body 10 constituting the packaging bag 1. The first cut line 3 is formed, and the second cut line 3 ′ is formed in the outer layer 11 on the other side (back side) of the laminated body 10 constituting the packaging bag 1.

  Further, the first cut line 3 formed on one (front side) outer layer 11 of the laminated body 10 constituting the packaging bag 1 has three locations on the outer edge of one (left side) of the left and right end thermal bonding portions 2 ′. And the other (right) outer edge at a position that does not reach the inner edge of the side edge thermal bonding portion 2 ′ by proceeding in the direction toward the inner edge of the side edge thermal bonding portion 2 ′. Three pieces having the same vertical phase (position) parallel to the left and right edge thermal bonding portions 2 ′ of the packaging bag 1 (for example, the distance from the outer edge of the upper edge thermal bonding portion 2 ″). The first-first start-side converged cut line 30A, the three first-first end-side converged cut lines 30B, the converged point of the first-first start-side converged cut line 30A, and the first-first end The left and right edge heats proceed in the left-right direction perpendicular to the left and right edge thermal bonding portions 2 'from the converged points of the side convergent cut lines 30B. The phase (position) in the vertical direction that extends inward from the inner edge of the landing part 2 ′ and is parallel to the left and right edge thermal bonding part 2 ′ of the packaging bag 1 (for example, from the outer edge of the upper edge thermal bonding part 2 ″) One first-1-2 start-side straight cut line 30C, one first-1-2 end-side straight cut line 30D having the same distance), and one of these first-1-2 start-side straight cut lines 30C, a first to third upper end side cut line 30E that swells to the upper end side connecting each end of one first and second end point side linear cut line 30D, and a first to third lower end side cut line 30F that swells to the lower end side. Consists of

  Further, the second cut line 3 ′ formed in the outer layer 11 on the other (back side) of the laminated body 10 constituting the packaging bag 1 is the outer edge of one (left side) of the left / right end thermal bonding portion 2 ′. It progresses in the direction toward the inner edge of the left and right edge thermal bonding part 2 'from the three positions on the other (right) outer edge and does not reach the inner edge of the left and right edge thermal bonding part 2'. 3 having the same vertical phase (position) (for example, distance from the outer edge of the upper edge thermal bonding portion 2 ") that is converged at the position and is parallel to the left and right edge thermal bonding portions 2 'of the packaging bag 1. The second 2-1 start-side convergent cut line 31A, the 3rd 2-1 end-side converged cut line 31B, the converged point of the 2-1 start-side converged cut line 31A and the second- 1 From the point where the end-point-side convergent cut line 31B converges, the left and right side edges proceed in the left-right direction perpendicular to the thermal bonding portion 2 ′, and the 1-2 The 2-2 start point side linear cut line 31C and the 2-2 end point side extending in the same phase (position) and length as the point side straight cut line 30C and the 1-2 end point straight cut line 30D. A second center central cut line 31E that connects the end points of the straight cut line 31D, the 2-2 start point side straight cut line 31C, and the 2-2 end point side straight cut line 31D with a straight line. It consists of.

  Regarding various cut lines, the various cut lines constituting the first cut line 3 are marked with “first”, and “1-1” and “first” are sequentially arranged from the outer edges of the left and right end thermal bonding portions 2 ′. The words “1-2” and “1-3” are added, and the various cut lines constituting the second cut line 3 ′ are marked with “second” and left -Words with branch numbers "2-1" and "2-2" added in order from the outer edge of the right end thermal bonding part 2 'are attached. The smaller the branch number, the left and right end thermal bonding. The cut line is closer to the outer edge of the portion 2 ′, and the larger the branch number, the cut line is closer to the center away from the outer edge of the left and right end thermal bonding portions 2 ′.

  Further, the 2-2 start point side straight cut line 31C, the 2-2 end point side straight cut line 31D, and the 2-3 central side straight cut line 31E are aligned in the same straight line, However, it is not necessary to classify the first and second start side straight cut lines 30C, and a portion (part) that coincides with the first and second start side straight cut lines 31C is defined as a second and second start side straight cut lines 31C. The portion (part) that coincides with the end-point-side straight cut line 30D on the front and back is defined as the 2-2 end-point-side straight cut line 31D, and the remaining portion (part) is defined as the second-third central straight-cut. This is defined as a line of sight 31E.

  The packaging bag 1 configured as described above has an outer edge on the left side (starting side) of the left and right side edge thermal bonding portion 2 ′ where the first cut line 3 intersects, for example, a region from the left side to the upper end side in FIG. Is picked with fingers and torn to the near side from the first cut line 3, among the two laminates constituting the packaging bag, the laminate on the near side and the laminate on the far side are the three first- The starting side converging cut line 30A and the three 2-1 starting point side converging cutting lines 31A are integrally torn so as to coincide with each other to reach the converging point on the starting point side and follow this. The lower end of the first 1-3 in which the tear opening line swells to the lower end side by being torn linearly and integrally along the first-second origin side straight cut line 30C and the second-second origin side linear cut line 31C. The result is that the side cut line 30F and the 1-3rd upper end side cut line 30E that swells to the upper end side reach the branch point and tear to the front. As a result, the first cut line 3 extends from the first-second start side straight cut line 30C to the first-3 lower end-side cut line 30F, and the second cut line 3 ′ has the second-second start side. The straight tear lines 31C are torn apart from each other along the second to third center-side straight score lines 31E, and the tear opening lines are cut along the first and second end-side straight score lines 30D and 2nd- 2 to the end point side linear cut line 31D, and in the first cut line 3, the first to third lower end side cut line 30F extends along the first to second end side straight cut line 30D, and the second cut line 3 In ', the first and second end-side convergent cuts that follow the 2-2 end-side linear cut line 31D are torn linearly and integrally to reach the end-point converged point. Either one of the lines of sight 30B and one of the three 2-1 end-side convergent cut lines 31B And torn integrally as matching, are opened reaches the right (end point) the outer edge of the left and right edge heat seal portion 2 in the FIG. 3 '. As shown in FIG. 8, the tear opening line is composed of a smooth curve and a straight line, and the opening can be made beautiful. Moreover, since the tear opening line formed by the 1-3 lower end side cut line 30F and the 2-3 central side straight cut line 31E creates a step, it easily grips one side and the other side of the laminate 10. Can be opened.

  Further, although illustration or detailed explanation is omitted, when the packaging bag 1 is opened in FIG. 3, if the region on the upper end side from the left side in FIG. As a result of tearing to the back side as a result of reaching the branch point of the 1st-3 lower end side cut line 30F bulging to the lower end side and the 1st-3 upper end side cut line 30E bulging to the upper end side, the opening start line 1-2 Other than being torn along the first-third upper end side cut line 30E from the side straight cut line 30C, it is torn and opened in the same manner as in the case of tearing to the near side.

  FIG. 5 is a plan view of an essential part seen from the front side schematically showing a second embodiment of the cut line formed in the packaging bag according to the present invention. In FIG. Although the 1-3 upper end side cut line 30E and the 1-3 lower end side cut line 30F are shown in an arc shape, the first bulge to the upper end side of a substantially U-shape instead of the arc shape. -3 is the upper end side cut line 30G and the 1st-3 lower end side cut line 30H bulging to the lower end side. Other than this, it is the same as FIG. In the case of the second embodiment, the first cut line 1 is substantially U-shaped with respect to the first-second start point side straight cut line 30C or the first-second end point side straight cut line 30D of the first cut line 3. It is desirable that the angle θ (only one place is described) formed by the 3 upper end side cut line 30G or the 1-3 lower end side cut line 30H is 160 to 175 degrees.

  FIG. 6 is a plan view of an essential part seen from the front side schematically showing a third embodiment in which a V-shaped cutout is combined with a score line formed in the packaging bag according to the present invention. Shows the first starting point side converging cut line 30A (or the above described 2-2 starting point side converging cut line 31A) as an opening start means (a weakened part that starts tearing). However, in FIG. 6, a V-shaped notch is combined with this to serve as an opening start means, and the first-first start-side convergent cut line 30A (or the second-second start-side converged cut line 31A). In the triangular region formed by the two outermost wires (two that sandwich the center one in FIG. 6) intersect the left (starting side) outer edge of the left and right edge thermal bonding part 2 ′ Or the first-first end-side convergent cut line 30B (or the second-first end-side converged line 2 formed on the outermost side of the cut line 31B (in FIG. 6, two sandwiching one in the center) intersect with the right (end point side) outer edge of the left and right edge thermal bonding part 2 ′. By providing a V-shaped cutout N1 in the triangular area to be opened, even if the user is blind, it is easier to visually open in that the opening start location can be specified. Can do.

  Furthermore, the front end portion (V-shaped folding point) facing the inside of the V-shaped notch N1 is a first-first starting-side convergent cut line 30A (or a second-second starting-side converged cutting line 31A). If tearing starts from a V-shaped notch by approaching the convergence point of the first, the tear opening line is converged substantially linearly from the front end portion facing the inside of the V-shaped notch N1. Since it reaches the convergence point of the shape cut line 30A (or the 2-2 start point side convergent cut line 31A), it can be functionally easier to open.

  FIG. 7 is a plan view of an essential part seen from the front side schematically illustrating a fourth embodiment in which a U-shaped notch is combined with a score line formed in the packaging bag according to the present invention. 1 shows that the first starting point side converging cut line 30A (or the second 2-2 starting point side converging cut line 31A) is used as the unsealing start means (weakening part that starts tearing). In FIG. 7, a U-shaped notch is combined with this to form an opening start means, and the first-first starting-side converged cut line 30A (or the 2-2 starting-point-side converged cutting line 31A) In the triangular area formed by the two outermost lines (two that sandwich the center one in FIG. 7) intersect the left (starting side) outer edge of the left and right edge thermal bonding part 2 ′. Or, the 1-1 end point side convergent cut line 30B (or the 2-1 end point side convergent cut line Two of the outermost lines of the line of sight (31B) (two that sandwich the central one in FIG. 7) intersect with the right (end point side) outer edge of the left and right edge thermal bonding part 2 ′. By providing the U-shaped notch N2 in the triangular area, it is possible to make the opening easier visually in that the opening start location can be specified even by a user who is blind. .

  Further, the front end portion (U-shaped inflection point) facing the inside of the U-shaped notch N2 is a first-first starting-side convergent cut line 30A (or a second-second starting-side converged cutting line 31A. If the tearing starts from the U-shaped notch by approaching the converging point of (), the tear opening line is substantially straight from the tip facing the inside of the U-shaped notch N2 to the 1-1st origin side Since the convergence point of the convergent score line 30A (or the 2-2 starting point side convergent score line 31A) is reached, it can be functionally easier to open.

6 shows a V-shaped notch, and FIG. 7 shows a U-shaped notch. However, as means for making the opening easier both visually and functionally, these may be used. It is not limited, and it may be a notch such as I-shape, V-shape, U-shape, turtle shell shape, etc. It can also function visually by providing a group of scars with a lot of minute punched holes Opening can be made easier. These are a kind of missing part, and a desired one I-shaped blade, one U-shaped blade, and one U-shaped blade for the left and right edge thermal bonding portions 2 'of the heat-bonded packaging bag 1. Two V-shaped knives and a number of small circular knives are pressed against each other to form a cut, and a part of the region (the region surrounded by the cut and outer edge, the region surrounded by a circular cut) is vacuum-adsorbed It is formed by removing. Furthermore, in addition to the cutout obtained by cutting out a part of the laminated body 10 constituting the packaging bag 1 as described above, a group of scars, short blades, etc., in which a small number of needles are inserted to form a large number of through holes are inserted. It may be a scar group in which a large number of cuts are formed. Scratches of this specification consist of a large number of through-holes by pressing a small-diameter needle assembly or a short-width blade assembly against the heat-bonded portion 2 'on the left and right edges of the heat-bonded packaging bag 1. For example, in the case of a through hole, the surface on the side where the needle is pressed is provided with a kind of mortar-shaped dent and a hole due to the tearing of the bottom along the shape of the tip of the needle. The surface on the side from which the needle protrudes has a kind of barnacle-shaped convex part along the shape of the tip of the needle and a hole formed by breaking the top part. This hole was made by breaking through and partially removed. is not. However, a large number of through-holes and a large number of cuts are gathered to form a certain region that is easy to tear. In this respect, notches such as I-shaped, V-shaped, U-shaped, turtle-shaped, This is the same as the group of scars formed by forming a number of punched holes, and these can be collectively referred to as a tear initiation region. The left and right ends of the heat-bonded packaging bag 1 are used for a scar group in which a small diameter needle or the like is inserted to form a large number of through holes, or a scar group in which a short blade or the like is inserted to form a large number of cuts. It is not necessary to remove a part of the edge thermal bonding part 2 ′, and it is sufficient to reduce the strength to such an extent that it is easy to tear a part of the left and right edge thermal bonding part 2 ′ of the thermally bonded packaging bag 1. Further, it may be a scar group formed without penetrating the surface (one or both) of the laminate 10.

  However, in any case, as shown in FIG. 6 and FIG. 7, it exists on the outermost side of the first-first origin-side convergent cut line 30A (or the second-second origin-side convergent cut line 31A). In the triangular region formed by two (two in the middle of FIG. 6 sandwiching one in the center) intersects the left (starting side) outer edge of the left and right edge thermal bonding portion 2 ′, or the first -1 end side converging cut line 30B (or 2nd-1 end side converging cut line 31B) are present at the outermost two lines (two lines sandwiching one in the center in FIG. 6) at the left and right ends It is necessary to be provided so as to fit within a triangular region formed by intersecting the outer edge on the right side (end point side) of the edge thermal bonding part 2 ′, and is I-shaped, V-shaped, U-shaped, turtle-shaped In the case of notches such as the notches, the leading end portion facing the inside of these notches is the first-first starting-side convergent cut line 30A (or the first It is necessary to form so as to approach the convergence point -2 origin side converging shape score line 31A).

  Further, in FIG. 6, a V-shaped notch is provided on both the starting point side (left side in the drawing) and the ending point side (right side in the drawing). In consideration of left-handed users, it is desirable to provide them on both sides, but they may be provided only on the starting side (left side in the figure), and the shapes such as notches are different on the both sides. There is no problem even if it is a thing (for example, it is a V-shaped notch on the starting point side but an I-shaped notch on the ending point side).

3 and 6, the 1-3 upper end cut line 30 </ b> E and the 1-3 lower end cut line 30 </ b> F have an arc shape, and in FIGS. 5 and 7, the 1-3 upper end side. The cut line 30G and the 1-3 lower end side cut line 30H are illustrated in a substantially U-shape, but the 1st-3 upper end side cut line and the 1st-3 lower end side cut line are The shape is not limited, and may be a substantially round shape, or the shapes of the first to third upper end side cut lines and the first to third lower end side cut lines may be different.

  Further, the first-third upper-end cut line 30E and the first-first cut-line 30E in FIG. 3 and FIG. 5 connecting the terminal ends of the first-second start-point-side straight cut line 30C and the first-second end-point-side straight cut line 30D. 3 lower cut line 30F, or the 1-3 upper cut line 30G and 1-3 lower cut line 30H in FIGS. 5 and 7 are each shown as one cut line, but only one cut line is shown. However, each of them may be composed of a plurality of pieces, or the number may be different between the upper end side and the lower end side. Further, the interval between the score lines when a plurality of lines are provided is preferably 1 mm or less. In addition, it is designed so that the level | step difference in the tear opening part of the 1st cut line 3 and 2nd cut line 3 'may be 6 mm or more, one side (front side) of the laminated body which comprises the packaging bag 1, and the other (back side) ) Is preferable because it can be easily picked with fingers.

Further, in FIGS. 3, 5, 6, and 7, the 1-1 start-point-side convergent cut line 30A, the 1-1 end-point-side convergent cut line 30B, and the 2-1 start-point-side convergent cut line 31A The first and second end-side converged cut lines 31B are respectively connected to the left and right ends from three locations on one (left side) outer edge and the other (right side) outer edge of the left and right end thermal bonding portions 2 ′. Although it was set to three specifications that converged to one point at a position that does not reach the inner edge of the left and right side edge thermal bonding part 2 ′ in the direction toward the inner edge of the edge thermal bonding part 2 ′, Pulling out from two locations on the outer edge of one (left side) and the other (right side) of the left and right edge thermal bonding portion 2 'toward the inner edge of the left and right edge thermal bonding portion 2' It is possible to make two specifications that converge to one point at a position that does not reach the inner edge of the left and right edge thermal bonding part 2 ′, and when removing the central one, In addition to this specification, variations of 4 specifications, 6 specifications, and even numbers are possible, and if you do not remove the center one, there are 5 specifications, 7 specifications, and odd variations in addition to 3 specifications. Yes, it is possible to make the number different from the starting point side and the ending point side, but in any variation, it is one point at the position that does not reach the inner edge of the left and right edge thermal bonding part 2 ′ There is no change in converging.

  By the way, in the said embodiment, the 1st 1-1 origin side convergent cut line 30A, the 1st-1 end point side convergent cut line 30B, the 2nd-1 origin side converged cut line 31A, the 2nd-1 end point side converged. Each of the cut line 31B is formed from the outer edge to the inner edge of the left / right end thermal bonding portion 2 ′, but these cut lines 30A, 30B, 31A, 31B are not necessarily left and right end thermal bonding portions. The 2 ′ outer edge may not be the starting point, and may be formed so as to extend toward the inner edge from the vicinity of the outer edge, that is, between the outer edge and the inner edge, as shown in FIG.

  Further, the first-first start-side convergent cut line 30A, the first-first end-point convergent cut line 30B, the second-first start-side converged cut line 31A, and the second-first end-side converged cut line 31B are These are formed so as to converge at one point on the inner edge side of the left and right end thermal bonding portions 2 ′, but may not necessarily converge at one point, and may be formed in a C shape. . For example, as shown in FIG. 10, among the first-first starting-side convergent cut lines 30A, a cut line 30A1 extending from the upper side toward the inner edge and a cut line 30A2 extending from the lower side toward the inner edge are on the inner edge side. It can also be configured to be close to each other without contact. When the cut line 30A1 extending from the upper side toward the inner edge contacts the cut line 30A2 extending from the lower side toward the inner edge, the cut lines 30A1 and 30A2 may intersect due to a dimensional error, and thereby the tear line becomes the cut line. However, if it is formed in a square shape as described above, it is possible to prevent the cut lines 30A1 and 30A2 from intersecting. About such a configuration, the same applies to the (1-1) end-point-side convergent cut line (30B), (2-1) start-point-side convergent cut line (31A), and (2-1) end-point-side convergent cut line (31B). Can do. At this time, the starting point of the first-second starting side linear cut line 30C may be in a region between the end of the cut line 30A1 and the end of the cut line 30A2, and is slightly shifted in the left-right direction. Also good. The same applies to the 1-2 end point-side straight cut line 30D, the 2-2 start point side straight cut line 31C, and the 2-2 end point side straight cut line 31D.

  Moreover, in the said embodiment, although the 1st-2 starting point side linear cut line 30C and the 1-2nd end point side linear cut line 30D are provided in the 1st cut line 3, the 1st cut line 3 is A configuration without these score lines 30C and 30D may be used. For example, as shown in FIG. 11, a first 1-3 upper end side cut line 30 </ b> E and a first 1-first end side converged cut line 30 </ b> A and a 1-1 end point side convergent cut line 30 </ b> B are provided. 3 lower cut line 30F can be provided. At this time, as shown in FIG. 11, a gap S1 is formed between the first-first start-side convergent cut line 30A and the first-third cut lines 30E, 30F, and the first-first end-side converged cut line 30B. A gap S2 may be provided between the first and third cut lines 30E and 30F, or such a gap is not provided, and the first and first starting-side converged cut lines 30A and the first and third cut lines 30E, While connecting 30F, it is also possible to connect the first-first end-side convergent cut line 30B and the first-third cut lines 30E, 30F. Even if it does in this way, the same effect as when the 1-2nd starting point side straight cut line 30C and the 1-2 end point side straight cut line 30D are provided can be acquired. Further, the second cut line 3 ′ is also constituted by only the second-third central straight cut line 31E without the 2-2 start-point-side straight cut line 31C and the 2-2 end-point-side straight cut line 31D. be able to.

  The modes shown in FIGS. 9 to 11 can be appropriately combined with at least one of the embodiments shown in FIGS. 3, 5, 6, and 7.

  In addition, the four-side seal type packaging bag has been described so far, but in short, a packaging bag having a configuration in which at least one edge thermal bonding portion is formed at the opposed position of a pair of opposed edges, for example, three-way It may be a seal type or a standing type packaging bag. Further, it goes without saying that all the categories not departing from the gist of the present invention are included in the present invention.

Next, the laminated body 10 which comprises the packaging bag 1 is demonstrated. As the outer layer of the laminated body 10, since it becomes a basic material constituting the packaging bag 1, a synthetic resin film having excellent properties in mechanical, physical, chemical and the like can be used. Polyamide-based and polypropylene-based resins can be used. Moreover, as a film using these resin, the stretched film extended | stretched to the biaxial direction is suitable. This is because the outer layer 11 is usually subjected to printing and printability is required. The thickness of the film constituting the outer layer 11 may be determined in consideration of cost and the like, but is generally about 12 to 25 μm.

  Moreover, as an aluminum foil used for the intermediate | middle layer 12 of the laminated body 10, the annealed aluminum foil is suitable, and the thickness is about 6-15 micrometers.

  Further, the inner layer 13 of the laminate 10 may be a layer formed from a heat-adhesive resin that can be melted by heat and welded to each other, and is appropriately selected depending on the physical properties required for the packaging bag 1. For example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-α olefin copolymer, ethylene-propylene copolymer , Ethylene-vinyl acetate copolymer, ionomer resin, acid copolymer of ethylene and acrylic acid, ester copolymer of ethylene and acrylic acid ester, and the like. Further, the thickness of the film constituting the inner layer 13 may be determined in consideration of required physical properties and costs.

  The laminate 10 has physical properties required when forming a packaging bag between the intermediate layer 12 and the inner layer 13, such as mechanical toughness, bending resistance, puncture resistance, impact resistance, cold resistance, In order to provide physical properties such as heat resistance and chemical resistance, for example, a strength reinforcing layer made of a film such as polyester, polyamide, polyethylene, polypropylene, polyolefin such as ethylene-propylene copolymer, or a resin layer can be provided. The strength reinforcing layer may be a combination of the film and the resin layer, and the thickness may be determined in consideration of required physical properties and costs.

  Moreover, as a lamination | stacking method of each layer of the laminated body 10 which comprises the packaging bag 1 of this invention, what is necessary is just to laminate | stack suitably using well-known lamination methods, such as a sandwich lamination method and a dry lamination method. The first cut line 3 and the second cut line 3 ′ may be physically formed using a rotary die cutter, but preferably after the laminate 10 is formed using a pulsed laser or the like. Formed on the outer layer 11. As a kind of laser used for this, a carbon dioxide laser, a YAG laser, a semiconductor laser, an argon ion laser, etc. are possible, and it is not particularly limited.

  In addition, as a result of examining the mechanism by which the actual tear line at the time of opening deviates from the score line, the present inventor has found that the tear line does not deviate from the score line when the tear line tears into a single horizontal character. On the other hand, as in the packaging bag described in Patent Document 1 and the packaging bag of the present invention, it has been confirmed that the probability that the tear line is removed increases in the cut line that combines the horizontal line and the diagonal line, and the horizontal line and the curve.

  Therefore, by devising the idea for solving the first problem, specifically, the shape of the score line and the shape of the score line formed on the front and back laminates constituting the packaging bag and the combination thereof, the front side Although the present invention achieves the formation of a tear line along an irregular score line even if it is torn to the back side, the disadvantage of having an irregular score line inherently, that is, It cannot be denied that there is a higher possibility that the tear line will deviate from the score line as compared to the score line that tears into one horizontal character. The original disadvantage that such an irregular cut line is incurred hardly occurs when the user opens a bag of 10 cm width for about 10 seconds at a normal speed, for example, an adult male, This may occur when the user opens a bag with a very high speed, for example, an adult male with a width of 10 cm in one second.

  Therefore, even if it is an irregular score line as in the present invention, the possibility that the tear line is deviated from the score line is reduced as much as possible, and the allowable range of the tear rate for forming a good tear opening is widened. Naturally, the device / improvement needs to be achieved by factors other than the shape of the score line, the shape of the score line formed on the front and back laminates constituting the packaging bag, and combinations thereof.

  Therefore, as a result of analyzing the mechanism by which the actual tear line at the time of opening is deviated from the score line, the present inventor has found a layer (inside the intermediate layer made of aluminum foil in which the score line is not formed) If at least one of the layers is a layer having orientation, when this does not coincide with the score line, the score line is mainly, for example, a straight line to an oblique line, There is an increased probability that the tear line will deviate from the score line at the transition point from the oblique line to the straight line, from the straight line to the curve, from the curve to the straight line, or at the inflection point of the curve where the inflection point exists. A good tear line that follows the score line of the outer layer by making a packaging bag composed of a laminate that does not have orientation in any of the layers arranged on the inner layer side of the intermediate layer consisting of Match cut line Tear lines) can be formed, i.e., to obtain a knowledge that can reduce the disadvantages associated with devised to solve the above first problem.

  From the above, in the packaging bags of the present invention shown in FIGS. 3, 5, 6, 7, 9, 10, and 11 (first to seventh embodiments), the layers constituting the packaging bags are stacked. It is preferable that all the layers arranged on the inner layer side from the intermediate layer made of aluminum foil are composed of an unstretched film and / or an unstretched resin layer, and the layer disposed on the inner layer side from the intermediate layer of the laminate is By not having any orientation, the packaging bag is moved along the outer layer cut lines (first cut line 3 and second cut line 3 ') from one (left side) outer edge of the left and right edge thermal bonding part 2'. When tearing, it is possible to achieve a higher level of better followability that can form a good tear opening that coincides with the outer layer score line (first score line 3, second score line 3 ′), Can widen the tear rate tolerance to create a good tear opening .

DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Edge thermal bonding part 2 'Left / right edge thermal bonding part 2 "Upper / lower edge thermal bonding part 3 1st cut line 3' 2nd cut line 10 Laminated body 11 Outer layer 12 Intermediate layer 13 Inner layer 20 Synthetic resin biting tool 21 Convex male member 22 Concave female member 30A 1-1 start point converging cut line 30B 1-1 end point converging cut line 30C 1-2 starting point side straight cut Line 30D First-second end-side straight cut line 30E, 30G First-third upper-end cut line 30F, 30H First-third lower-end cut line 31A 2-1 Start-point-side convergent cut line 31B 2-1 End side convergent cut line 31C 2-2 Start point side straight cut line 31D 2-2 End point side straight cut line 31E 2-3 Central side straight cut line α Cut line forming region β Articulating device forming region N1 V-shaped notch N2 U-shaped notch

The present invention relates to a packaging bag .

  Conventionally, in a three-side seal type, four-side seal type, or standing type packaging bag, the outer edge of the front side laminate constituting the packaging bag starts from the outer edge of the left edge thermal bonding portion, and the right edge heat A continuous first cut line is formed with the outer edge of the bonded portion as the end point (the position of the starting point and the end point in the height direction [the direction parallel to the left and right side edge thermal bonding portions] is the same), and the packaging bag is configured. In the outer layer of the back side laminate, the outer edge of the left edge thermal bonding part is the starting point, and the outer edge of the right edge thermal bonding part is the end point (the height direction of the starting point and end point [parallel to the left and right side edge thermal bonding parts A second cut line that is continuous as the direction of the direction] is formed, and a part of the formation positions of the first cut line and the second cut line on the rectangular plane of the laminate in a state where the packaging bag is viewed in plan By making it different, the first cut line and the second cut line When the upper end side of the packaging bag is torn open in the width direction (the direction orthogonal to the left and right side edge thermal bonding portions), the outer side of the cut surface of the laminate on the front side that forms the tear opening and the back side lamination There has been proposed a packaging bag in which an opening when a content is taken out is made easier by making a difference in a tear opening by making the outline of a cut surface of the body different (see, for example, Patent Document 1).

  Furthermore, a packaging bag is also proposed in which a step is created in the same kind of tear opening to facilitate opening when the contents are taken out, and a packaging bag having a reseal function (see, for example, Patent Document 2). ).

  Here, as in the second embodiment of the packaging bag described in Patent Document 1 or the packaging bag described in Patent Document 2, one of the first cut line and the second cut line (for example, the back side) is used. A straight cut line of one of the laminates along the straight cut line, with a straight cut line and the other (for example, the front side) an irregular (non-linear) cut line swollen to the lower end side. A tongue-shaped step due to a combination of a general outline and an arc-shaped outline of the cut surface of the other laminate along the cut line bulging on the lower end side is most desirable as a step for easily opening with fingers It is said that.

However, as a result of studying the mechanism by which the actual tear line at the time of opening is deviated from the cut line, the present inventor has found that the tear line does not deviate from the cut line. On the other hand, as in the packaging bag described in Patent Document 1, it is confirmed that the probability that the tear line is removed increases in the cut line that combines the horizontal line and the curved line.

Therefore, it is undeniable that there is a demerit of providing an irregular cut line inherently, that is, the possibility that the tear line deviates from the cut line as compared with the cut line that tears into one horizontal character. The original disadvantage that such an irregular cut line is incurred hardly occurs when the user opens a bag of 10 cm width for about 10 seconds at a normal speed, for example, an adult male, This may occur when the user opens a bag with a very high speed, for example, an adult male with a width of 10 cm in one second.

Furthermore, when opening the packaging bag, the surface with the irregular cut line of the packaging bag is turned forward, the area on the upper end side from the cut line is picked and teared forward, and along the irregular cut line. An arc-shaped tear line that swells to the lower end side is formed, but some users open the bag with the irregular cut line side of the packaging bag facing forward and the upper end from the cut line. In some cases, the tearing line may be removed from the irregular cut line, and the initially planned tongue piece-shaped step may not be formed.

JP 2005-289396 A JP 2003-104394 A

From the above, the present invention can reduce the possibility that the tear line will deviate from the score line even if it is an irregular score line, and widen the allowable range of the tear rate for forming a good tear opening. Naturally, it is necessary to devise and improve the incision / improvement by factors other than the shape of the score line and the shape of the score line formed on the front and back laminates constituting the packaging bag and combinations thereof. It is a first object to provide a packaging bag having such a function.

Therefore, as a result of analyzing the mechanism by which the actual tear line at the time of opening is deviated from the score line, the present inventor has found a layer (inside the intermediate layer made of aluminum foil in which the score line is not formed) If at least one of the layers is a layer having orientation, when this does not coincide with the score line, the score line is mainly, for example, a straight line to an oblique line, There is an increased probability that the tear line will deviate from the score line at the transition point from the oblique line to the straight line, from the straight line to the curve, from the curve to the straight line, or at the inflection point of the curve where the inflection point exists. A good tear line that follows the score line of the outer layer by making a packaging bag composed of a laminate that does not have orientation in any of the layers arranged on the inner layer side of the intermediate layer consisting of Match cut line Tear lines) can be formed, i.e., to reduce the disadvantages described above, has gained knowledge that can solve the foregoing problems.

Furthermore, the present invention can be easily torn and opened, and the tear opening when it is torn and opened is beautiful and the outer surface of the laminate on the front and back of the tear opening has different steps, which makes it easy with fingers. In a packaging bag having at least an outer layer that can be picked and opened, an intermediate layer made of aluminum foil, and an inner layer made of a heat-adhesive resin, the shape of the score line and the cut formed on the front and back laminates constituting the packaging bag By devising the shape of the line of sight and the combination thereof, the packaging bag can be torn without tearing away from the cut line even if it tears in the tearing direction at the time of opening, specifically the front side or the back side It is a second subject to provide

Furthermore, it is a third object of the present invention to provide a packaging bag having a resealing function by providing a synthetic resin occlusion device made up of a male member and a female member that are engaged with each other at opposing positions on the inner surface of the packaging bag. Let it be an issue .

In order to achieve the above object, the present inventor
The present invention described in claim 1
It is a packaging bag composed of a laminate having at least an outer layer, an intermediate layer made of aluminum, and an inner layer made of a heat-adhesive resin, and arranged so that the inner layer of the laminate is on the inside,
The packaging bag includes a first surface and a second surface of the same shape facing each other in the thickness direction,
The thickness direction in the packaging bag is defined as the first surface side and the second surface side with respect to the first surface and the second surface,
The upper, lower, left and right directions in the packaging bag are defined as an upper side, a lower side, a left side, and a right side, based on the case where the packaging bag is viewed in plan from the first surface side,
The first surface and the second surface are joined at the left edge thermal bonding portion and the right edge thermal bonding portion,
An opening means is provided from the left edge thermal bonding portion to the right edge thermal bonding portion,
The unsealing means includes a first surface side cut line formed in the outer layer of the first surface, and a second surface side cut line formed in the outer layer of the second surface,
The first side cut line is
The first surface side middle side upper swelling curve portion having an inflection point on the upper side connecting the left end and the right end at the middle position in the left-right direction,
The first surface side middle side lower swelling curve portion having an inflection point on the lower side connecting the left end and the right end shared with the first surface side middle side upper swelling curve portion at the middle position in the left-right direction,
The second surface-side score line has a horizontal line portion on the second surface side that proceeds in the left-right direction connecting the left end and the right end at a middle position in the left-right direction,
The cut surface of the first surface formed by one of the first surface side middle side upper bulge curve portion and the first surface side middle side lower bulge curve portion when the opening means tears open in the left-right direction. The outer surface of the second surface and the outer surface of the cut surface of the second surface formed by the horizontal line portion on the second surface side side, and has a function of forming a step in the tear opening,
Both the first surface and the second surface are composed of an unstretched film and / or an unstretched resin layer.

  The present invention according to claim 2
In the packaging bag according to claim 1,
The second surface side cut line is
The left edge thermal bonding portion extends leftward starting from a position higher than the vertical position of the horizontal line portion on the second surface side inside, and leftward from the inner edge of the left edge thermal bonding portion. It has a diagonal line part on the left side on the left side of the second surface with the position retracted as the end point,
In the left edge thermal bonding portion, it extends in the upper right direction starting from a position lower than the vertical direction position of the horizontal line portion on the second surface side inside, to the left side from the inner edge of the left edge thermal bonding portion It has an upper right diagonal line part on the left side of the second surface with the retracted position as the end point,
In the right edge thermal bonding portion, the lower edge is extended from the position higher than the vertical position of the horizontal line portion on the second surface side in the middle to the right from the inner edge of the right edge thermal bonding portion. Provided with a left-down diagonal line portion on the right side of the second surface with the retracted position as the end point,
In the right edge thermal bonding part, it extends in the upper left direction starting from a position lower than the vertical direction position of the horizontal line part on the second surface side inside, and is on the right side from the inner edge of the right edge thermal bonding part. It is provided with an upper left diagonal line portion on the right side of the second surface whose end point is the retracted position.

  Further, the present invention described in claim 3
In the packaging bag according to claim 1 or 2,
The second surface side cut line is
A left side horizontal line portion that proceeds in the left direction from the left end of the horizontal line portion on the second side on the left side in the left-right direction,
A right side horizontal line portion that proceeds in the right direction from the right end of the horizontal side portion on the second surface side at the right side position in the left-right direction,
The horizontal line part on the left side of the second surface side, the horizontal line part on the second side of the second surface side, and the horizontal line part on the right side of the second surface side are arranged in the same vertical position so as to form the same straight line, Is.

  Further, the present invention according to claim 4 provides
The packaging bag according to claim 3,
The second surface side cut line is
A horizontal line portion on the left side of the second surface side that proceeds from the left end of the horizontal line portion on the left side of the second surface side to the left side in the left and right direction and reaches the outer edge of the left edge thermal bonding portion. Prepared,
A horizontal line part on the right side of the second surface side that proceeds from the right end of the horizontal line part on the right side of the second surface side to the right side in the right and left direction and reaches the outer edge of the right edge thermal bonding part. Prepared,
The horizontal line portion on the left side of the second surface side, the horizontal line portion on the left side of the second surface side, the horizontal line portion on the middle side of the second surface side, the horizontal line portion on the right side of the second surface side, and the horizontal line portion on the right side of the second surface side. Are arranged in the same vertical position so as to form the same straight line.

  Further, the present invention according to claim 5 provides:
In the packaging bag according to any one of claims 1 to 4,
The first side cut line is
In the left edge thermal bonding portion, the left side of the first surface side middle side of the upper bulge curve portion and the lower bulge curve portion is extended to the lower right direction starting from a position higher than the vertical position of the left end in common. The first surface side left side diagonal line portion with the end point being the position retracted to the left side from the inner edge of the edge thermal bonding part,
The left edge thermal bonding portion extends in the upper right direction starting from a position lower than the vertical position of the left end in common with the upper bulge curve portion and the lower bulge curve portion of the first surface side middle side, and A diagonal line part on the upper right side on the left side of the first surface with the end point being the position retracted to the left side from the inner edge of the edge thermal bonding part,
In the right edge thermal bonding portion, the first surface side middle side upper bulge curve portion and the lower bulge curve portion are extended in the lower left direction starting from a position higher than the vertical position of the right end common to the right side edge The first surface side right-hand side diagonal line part with the position retreated to the right side from the inner edge of the edge thermal bonding part as the end point,
In the right edge thermal bonding portion, the right side edge of the first surface side is extended in the upper left direction starting from a position that is lower than the vertical position of the right end common to the upper bulge curve portion and the lower bulge curve portion on the right side, and The second surface side right side diagonal line part which makes the end point the position retreated to the right side from the inner edge of an edge thermal-bonding part is provided.

  Further, the present invention according to claim 6 provides
In the packaging bag according to any one of claims 1 to 5,
The first side cut line is
The left side in the left-right direction has a horizontal line portion on the left side of the second surface side that proceeds in the left direction from the left end common to the upper bulge curve portion and the lower bulge curve portion of the first surface side inside,
A right side horizontal line portion that proceeds in the right direction from the common right end of the first bulge curve portion and the lower bulge curve portion at the right side in the left-right direction, It is.

  The present invention according to claim 7 provides
The packaging bag according to claim 6,
The first side cut line is
One horizontal line portion on the left side of the first surface that proceeds leftward from the left end of the horizontal line portion on the left side of the first surface to the left side position in the left-right direction and reaches the outer edge of the left edge thermal bonding portion Prepared,
A single horizontal line portion on the right side of the first surface that proceeds from the right end of the horizontal line portion on the right side of the first surface to the right side in the left-right direction and reaches the outer edge of the right edge thermal bonding portion. Prepared,
The horizontal line part on the left side of the first surface side and the horizontal line part on the left side of the first surface side are arranged in the same vertical position so as to form the same straight line,
The horizontal line part on the right side of the second surface side and the horizontal line part on the right side of the second surface side are arranged in the same vertical position so as to form the same straight line.

  Further, the present invention according to claim 8 provides:
In the packaging bag according to any one of claims 1 to 7,
The opening means is
At a position in the left-right direction that is retreated to the left side from the inner edge of the left edge thermal bonding portion from the outer edge of the left edge thermal bonding portion,
In a vertical position with a width that sandwiches the vertical position of the horizontal line portion on the second surface side middle side or the vertical position of the horizontal line portion on the second surface side middle side,
Comprising left-side opening start means that are I-notches, notches or scars;
At the position in the left-right direction that has receded from the outer edge of the right edge thermal bonding portion to the right side from the inner edge of the right edge thermal bonding portion,
In a vertical position with a width that sandwiches the vertical position of the horizontal line portion on the second surface side middle side or the vertical position of the horizontal line portion on the second surface side middle side,
It is provided with a right-side opening start means that is a group of I notches, notches or scars.

The present invention according to claim 9
In the packaging bag according to any one of claims 1 to 8,
  A protruding male member and a female recess that mesh with each other at opposite positions below the opening means in the inner layer of the first surface and the inner layer of the second surface constituting the inner surface of the packaging bag. A synthetic resin bite made of members is provided,
  The male member and the female member are engaged to provide a reseal function.

According to this invention, the first surface and the second surface of the packaging bag (1) are all unstretched films and / or unstretched resin layers, the layers disposed on the inner layer side from the intermediate layer made of aluminum foil. Since the layers arranged on the inner layer (13) side from the intermediate layer (12) of the first surface (10) and the second surface (10) are all not oriented, the packaging bag (1) is torn along the outer layer cut line (first surface side cut line 3, second surface side cut line 3 ′) from one (left side) outer edge of the left and right edge thermal bonding portions (2 ′) And, it is possible to achieve a higher degree of better followability that can form a good tear opening that matches the outer layer score line (first surface side score line 3, second surface side score line 3 ′), Therefore, the allowable range of tearing speed for forming a good tearing opening can be expanded. .

Furthermore, according to this invention, the first surface (10) provided with the first surface side cut line (3) of the packaging bag (1) is directed forward, and the opening means (3, 3 ', N1, N2) . When the upper region is picked with fingers and torn forward, the first surface (10) on the front side of the first surface (10) and the second surface (10) of the packaging bag (1 ) is the first surface. A tear line is formed along the side cut line (3), but on the inner side, a tear line is formed along the lower swelling curve portion (30F) on the first surface side inner side , and conversely, the opening means (3 , 3', N1, N2 when tearing the back side picking region above), of the first surface of the packaging bag (1) comprises (10) and a second surface (10), a first front side In the surface (10), a tear line is formed along the first surface side cut line (3), but in the middle side, tearing occurs along the upper surface curve portion (30E) on the first surface side middle side. Since the piercing line is formed, it can be torn without detaching from the score line.

Furthermore, in the opposing position (β) below the tearing means in the inner layer (13) of the first surface (10) and the inner layer (13) of the second surface (10) constituting the inner surface of the packaging bag (1). , A synthetic resin occlusion device (20) comprising a protruding male member (21) and a concave female member (22) meshing with each other is provided, and the male member (21) and the female member ( 22) can be made into a packaging bag having a resealing function.

It is a top view which shows diagrammatically the positional relationship of the cut line of the packaging bag concerning this invention, and an occlusion tool. It is a figure which shows the XX sectional view of FIG. It is the principal part top view seen from the 1st surface side which shows 1st Embodiment of the score line formed in the packaging bag concerning this invention illustratively. (A) is a figure which shows the YY sectional view schematically of FIG. 3, (b) is a figure which shows the ZZ sectional view schematically of FIG. It is the principal part top view seen from the 1st surface side which shows 3rd Embodiment which combined the V-shaped notch with the score line formed in the packaging bag concerning this invention. It is an opening figure of the state which left the edge thermal bonding part of the right side of the packaging bag shown in FIG. It is the principal part top view seen from the 1st surface side which shows diagrammatically 5th Embodiment of the score line formed in the packaging bag concerning this invention. It is the principal part top view seen from the 1st surface side which shows diagrammatically 6th Embodiment of the score line formed in the packaging bag concerning this invention. It is a principal part top view seen from the 1st surface side which shows diagrammatically 7th Embodiment of the score line formed in the packaging bag concerning this invention.

The above-described present invention will be described in detail below with reference to the drawings.
In addition, in this paragraph, the correspondence relationship with the constituent elements defined in the scope of claims with respect to the constituent elements with reference numerals is described in parentheses.
1 is a plan view schematically showing the positional relationship between a cut line and a bite of a packaging bag according to the present invention, FIG. 2 is a diagram schematically showing a cross section taken along line XX of FIG. 1, and FIG. The principal part top view seen from the 1st surface side which shows diagrammatically 1st Embodiment of the cut line formed in this packaging bag, FIG.4 (a) is a figure which shows the YY sectional view schematically of FIG. , (B) is a diagram schematically showing a cross section taken along the line ZZ in FIG. 3 , and FIG. 5 is a diagrammatic illustration of a third embodiment in which a cut line formed in the packaging bag according to the present invention is combined with a V-shaped notch. fragmentary plan view seen from the first surface side shown in FIG. 6 is a open view of a state in which left the right edge heat seal portion of the packaging bag shown in FIG. 3, 1 in the figure packaging bag 2 edge heat seal portion 2 'is left-side and right edge heat seal portion, 2 "edge heat seal portion of the upper side and lower side, 3 the first surface side score line, 3' and the second side score line 10 is laminate (first surface and Dihedral), 11 outer layer, 12 is an intermediate layer, 13 inner layer, 20 is made of synthetic resin zipper, 21 convex male member, 22 is a female member of concave, 30A is the 1-1 origin side Converged cut line ( first surface side cut line / first surface side left-side downward diagonal line portion, first surface side left side horizontal line portion and first surface side left-side upward diagonal line portion ), 30B is first -1 end side converging cut line ( first surface side cut line / first surface side right side diagonal line part, first side side right side horizontal line part and first side side right side diagonal line part ) 30C is a first-second origin side straight cut line ( first surface side cut line / horizontal line portion on the left side of the first surface side ), and 30D is a first-second end point side straight cut line ( first surface-side cut line / first line ). horizontal portion of the side right), 30 E curve portions bulging on the 1-3 upper side score line (first surface side score line / first surface side of the side), 30 F the first 1-3 lower side switching Line (first surface side score line / round-faced curve portion of the first surface side of the side), 31A is right downward slanting line of the 2-1 origin side converging shape score line (second surface side score line / second surface side left Part, the horizontal line part on the left side of the second surface side, and the upper right diagonal line part on the left side of the second surface ), 31B is the 2-1 end side converged cut line ( second surface side cut line / second surface side right side) , A left side diagonal line portion, a horizontal line portion on the right side of the second surface side, and an upper left diagonal line portion on the right side of the second surface side ), 31C is a 2-2 origin side straight cut line ( second surface side cut line / Horizontal line part on the left side of the second surface side ), 31D is a 2-2 end point side straight cut line ( second line side cut line / horizontal line part on the right side of the second surface side ), 31E is a straight line shape on the second-3 center side. Cut line ( second line side cut line / second line side middle horizontal line part ), N1 is V-shaped notch (one example of left and right side tear initiation means / notch) , N2 is U-shaped notch (left And another example of the right tear-initiation means or notches), alpha denotes score line forming region, beta is a zipper formation region, respectively.

FIG. 1 is a plan view schematically showing the positional relationship between a score line and a bite of a packaging bag according to the present invention, and FIG. 2 is a diagram schematically showing a cross section taken along line XX of FIG. The outer layer 11, the intermediate layer 12 made of aluminum foil, and the inner layer 13 made of a heat-adhesive resin layer are laminated, the inner layers 13 of the rectangular laminate 10 are overlapped with each other, and the four peripheral edges are thermally bonded. It is a four-side seal type packaging bag sealed with a heat bonding part 2. In addition, in this specification, in the said edge thermal bonding part 2, it is located in the edge part of the left-right direction in FIG. 2 is referred as a left side and right edge heat seal portion 2 ', 1 vertical pair which are formed over the lateral direction as well as positioned at an end portion of the end edge heat-bonding part in such 2 the referred to as edge heat seal portion 2 "of the upper side and lower side. and outer layer of one (first surface) of the rectangular laminate 10 the packaging bag 1 constituting the packaging pouch 1 and the other (the The cut line forming region α and the cut line forming region in which the first cut line 3 and the second cut line 3 ′ are formed on the outer layer of the second surface so that the forming positions are different in the plan view of the packaging bag 1 respectively. lower side Toka (lower edge heat-bonding unit 2 'side) of the male member 21 and the concave ridge mutually meshed with each other in the female member 22 than α Made of synthetic resin zipper 20 consists of a snap fastener forming region β provided.

Next, embodiments of the cut lines (the first cut line 3 and the second cut line 3 ′) formed in the packaging bag 1 will be specifically described in detail. FIG. 3 is a plan view of an essential part of the first embodiment of the cut line formed in the packaging bag according to the present invention as seen from the first surface side, and FIG. 4 (a) is a cross-sectional view taken along the line YY in FIG. (B) is a figure which shows the ZZ line cross section of FIG. 3 schematically, Comprising: A cut line is one side ( 1st surface ) of the laminated body 10 which comprises the packaging bag 1. FIG. The first cut line 3 formed in the outer layer 11 and the second cut line 3 ′ formed in the outer layer 11 on the other side ( second surface ) of the laminate 10 constituting the packaging bag 1.

Furthermore, the outer edge of one of the laminated body 10 constituting the packaging pouch 1 first score line 3 formed on the outer layer 11 of the (first surface), one of the left-side and right end heat-bonding unit 2 '(left) of three and the other said each traveling in a direction toward the inner edge of the left and right side edge heat seal portion 2 'and a point 3 of the outer edge left and right side edge heat seal portion of the (right) 2 vertical phase parallel to 'the left side and right edge heat seal portion 2 of the position converging to which the packaging bag 1 does not reach the inner edge' (position) (e.g., the upper side edge heat seal portion 3 "1-1 start-point-side convergent cut lines 30A having the same distance from the 2" outer edge), 3 1-1 end-point-side convergent cut lines 30B, and these 1-1 start-side converged lines respectively perpendicular to the left side and right edge heat seal portion 2 'convergent point of Jo score line 30A and the convergent point and the 1-1 end point converge shaped score line 30B Vertical phase parallel to left side and right edge heat seal portion 2 'left side and right edge heat seal portion 2 inner edge than it is in the packaging bag 1 reaches the inside of the' in traveling to the right ( position) (e.g., one of the 1-2 origin side straight score line 30C to a distance) from the outer edge of the edge heat seal portion 2 of the upper side "similarly, one 1-2 end point linear The first to third upper end sides that swell upward from the cut line 30D, and the one first and second start-side straight cut lines 30C and one first and second end-side straight cut lines 30D. It is composed of a cut line 30E and a first to third lower end cut line 30F that swells downward .

Further, the second score line 3 formed on the outer layer 11 of the other laminate 10 constituting the packaging bag 1 (the second surface) ', the left side and the right end heat-bonding unit 2' one (left) the three outer edge and the other, respectively from a point 3 proceeds in a direction toward the inner edge of the left side and right edge heat seal portion 2 'left side and right edge heat seal portion of the outer edge of the (right) 2 vertical phase parallel to 'the left side and right edge heat seal portion 2 of the position converging to which the packaging bag 1 does not reach the inner edge' (position) (e.g., the upper side edge heat seal portion 3 "2-1 start-point-side convergent cut lines 31A having the same distance from the outer edge of 2"), three 2-1 end-point-side convergent cut lines 31B, and these 2-1 start-side converged lines convergent point of Jo score line 31A and the left perpendicular to each left side and right edge heat seal portion 2 'from the convergent point and the 2-1 end point converge shaped score line 31B A 2-2 start point-side straight line extending in the same direction (position) and length as the first-1-2 start point-side straight cut line 30C and the 1-2 end point-side straight cut line 30D. The cut line 31C, the 2-2 end point side straight cut line 31D, and the end points of the 2-2 start point side straight cut line 31C and the 2-2 end point side straight cut line 31D are connected in a straight line. It is comprised from the 2nd-3 center straight cut line 31E.

Regarding various cut lines, the various cut lines constituting the first cut line 3 are marked with “first”, and “1-1” and “first” are sequentially arranged from the outer edges of the left and right end thermal bonding portions 2 ′. The words “1-2” and “1-3” are added, and the various cut lines constituting the second cut line 3 ′ are marked with “second” and left - from the outer edge of the right end heat-bonded portions 2 'in order "2-1" are denoted by the wording added the branch number of "2-2", more branch number is small, the left side and right end thermal bonding unit 2 'becomes the outer edge side of the score line, the greater the branch number, left side and right end heat-bonding unit 2' becomes closer to the center of the score line away from the outer edge of the.

  Further, the 2-2 start point side straight cut line 31C, the 2-2 end point side straight cut line 31D, and the 2-3 central side straight cut line 31E are aligned in the same straight line, However, it is not necessary to classify the first and second start side straight cut lines 30C, and a portion (part) that coincides with the first and second start side straight cut lines 31C is defined as a second and second start side straight cut lines 31C. The portion (part) that coincides with the end-point-side straight cut line 30D on the front and back is defined as the 2-2 end-point-side straight cut line 31D, and the remaining portion (part) is defined as the second-third central straight-cut. This is defined as a line of sight 31E.

Packaging bag 1 configured as described above, the outer edge of the left side (the origin side) of the first switching left side and right edge heat seal portion 2 eyes 3 intersect ', for example, upper side from the left side of the Figure 3 When the region is picked up with fingers and torn to the near side from the first cut line 3, among the two laminates constituting the packaging bag, the front laminate and the back laminate are the three first pieces. -One of the starting point side converging cut lines 30A and one of the three 2-1 starting point side converging cut lines 31A are torn together to reach the converging point on the starting point side. It is torn linearly along the following first-second origin-side linear cut line 30C and second-second origin-side linear cut line 31C, and the tear-opening line swells to the lower end side. 3 To reach the branch point of the lower end side cut line 30F and the 1-3rd upper end side cut line 30E that swells to the upper end side, and torn to the near side As a result, the first cut line 3 extends from the first-second start side straight cut line 30C to the first-third lower end side cut line 30F, and the second cut line 3 ′ has the second-second start point. The second straight center cut line 31C is torn apart from each other along the second to third central straight cut line 31E, and the tear opening lines are the first and second end side straight cut lines 30D and 2D. -2 to the end point-side straight cut line 31D, and in the first cut line 3, the 1-3 lower end side cut line 30F is along the 1-2 end-point side straight cut line 30D, and the second cut line At 3 ', the first and second end-side converging shapes follow the first and second end-side convergent points which are torn linearly and integrally along the second-and-end-end-side straight cut line 31D. Any of the cut lines 30B and any of the three 2-1 end point side convergent cut lines 31B Preparative and torn integrally as matches are opened reaches the right (end point) the outer edge of the left side and right edge heat seal portion 2 in the FIG. 3 '. As shown in FIG. 6 , the tear opening line is composed of a smooth curve and a straight line, and the opening can be made beautiful. In addition, the tear opening line formed by the first-3 lower end side cut line 30F and the second-3 center side straight cut line 31E causes a step, so that one side ( first surface ) and the other side ( The second surface ) can be easily picked and opened.

  Further, although illustration or detailed explanation is omitted, when the packaging bag 1 is opened in FIG. 3, if the region on the upper end side from the left side in FIG. As a result of tearing to the back side as a result of reaching the branch point of the 1st-3 lower end side cut line 30F bulging to the lower end side and the 1st-3 upper end side cut line 30E bulging to the upper end side, the opening start line 1-2 Other than being torn along the first-third upper end side cut line 30E from the side straight cut line 30C, it is torn and opened in the same manner as in the case of tearing to the near side.

FIG. 5 is a plan view of an essential part seen from the first surface side, schematically showing a third embodiment in which a V-shaped cutout is combined with a score line formed in the packaging bag according to the present invention. 3, the first starting point side converging cut line 30A (or the 2-2 starting point side converging cut line 31A) is used as an opening start means (a weakened portion that starts tearing). As shown in FIG. 5 , a V-shaped notch is combined with this to form an opening start means, and the first-first starting side convergent cut line 30A (or the second-second starting side converged cut line is shown. is formed by two existing in the outermost 31A) (two to sandwich the single central in FIG. 5) intersects the left (origin side) edge of the left side and right edge heat seal portion 2 ' Within the triangular area, or the 1-1st end point side convergent cut line 30B (or the 2-1 end point side) Crossing the most two existing outside (right side (end side in FIG. 2 that sandwich the single central in 5) is left side and right edge heat seal portion 2 ') the outer edge of the converging shape score line 31B) By providing a V-shaped cutout N1 in the triangular region formed by this, it is easier to visually open in that the opening start location can be specified even for visually impaired users It can be.

  Furthermore, the front end portion (V-shaped folding point) facing the inside of the V-shaped notch N1 is a first-first starting-side convergent cut line 30A (or a second-second starting-side converged cutting line 31A). If tearing starts from a V-shaped notch by approaching the convergence point of the first, the tear opening line is converged substantially linearly from the front end portion facing the inside of the V-shaped notch N1. Since it reaches the convergence point of the shape cut line 30A (or the 2-2 start point side convergent cut line 31A), it can be functionally easier to open.

In addition, although the V-shaped notch is shown in FIG. 5 , means for making the opening easier both visually and functionally is not limited to these. It can be V-shaped, U-shaped, turtle-shaped, etc., and it can be opened easily both visually and functionally by providing a group of scars with a number of minute punched holes. be able to. These are the missing part of the kind, cutlery desired one I-shape with respect to the left side and right edge heat seal part 2 of the packaging bag 1 which is heat-bonded ', of one U-shaped cutter A single V-shaped blade and a large number of small circular blades are pressed against each other to form a cut, and vacuum suction is applied to a part of the region (the region surrounded by the cut and the outer edge, the region surrounded by a circular cut). It is formed by removing with, for example. Furthermore, in addition to the cutout obtained by cutting out a part of the laminated body 10 constituting the packaging bag 1 as described above, a group of scars, short blades, etc., in which a small number of needles are inserted to form a large number of through holes are inserted. It may be a scar group in which a large number of cuts are formed. Scars group of this specification, the packaging bag 1 which is heat-bonded left side and right of the small diameter relative to the end edge heat seal portion 2 'needle assemblies and width short blade number of pressing a collection of For example, in the case of the description of the through hole, the surface on the side where the needle is pressed is a hole due to a kind of mortar-shaped dent and bottom breakage along the shape of the tip of the needle. The surface on the side from which the needle protrudes has a kind of barnacle-shaped convex part along the shape of the tip of the needle and a hole due to the break of the top part. It was n’t. However, a large number of through-holes and a large number of cuts are gathered to form a certain region that is easy to tear. In this respect, notches such as I-shaped, V-shaped, U-shaped, turtle-shaped, This is the same as the group of scars formed by forming a number of punched holes, and these can be collectively referred to as a tear initiation region. Incidentally, scar was formed a large number of through-holes crowded stabbed like small diameter needle groups, short for scar group forming a plurality of cuts crowded stabbed like cutting tool, heat bonded left side, the right side of the packaging bag 1 edge heat seal portion 2 'need not be partially removed in the left side and right edge heat seal part 2 of the packaging bag 1 which is heat-bonded' strength enough to facilitate tearing a part region of the Since it is sufficient to lower, it may be a scar group formed without penetrating the surface (one or both) of the laminate 10.

However, in any case, as shown in FIG. 5, the two outermost lines (1-1A starting point side converging cut line 30A (or 2-2 starting point side converging cut line 31A)) ( a triangular region in FIG. 5 two sandwiching the single center) is formed by intersecting the left (origin side) edge of the left side and right edge heat seal portion 2 ', or first- 1 end point converge shaped score line 30B (or 2-1 end point converge shaped score line 31B) 2 present in the outermost (2 sandwiching the single central in FIG. 5) is left side and the right side of It is necessary to be provided so as to fit within a triangular region formed by intersecting the outer edge on the right side (end point side) of the edge thermal bonding portion 2 ′, and is I-shaped, V-shaped, U-shaped, turtle shell In the case of a notch such as a shape, the front end portion facing the inside of these notches is a first-first starting-side converged cut line 30A (or 2-2 it is necessary to form so as to approach the convergence point of origin side converging shape score line 31A).

In FIG. 5 , V-shaped notches are provided on both the starting side (left side in the figure) and the ending point side (right side in the figure). However, considering left-handed users, both sides are provided. It is desirable to provide it, but it may be provided only on the starting point side (left side in the figure), and even if it is provided on both sides, the shape such as a notch is different between the starting point side and the ending point side (for example, V-shaped on the starting point side) There is no problem even if it is a notch, but it is an I-shaped notch on the end point side.

Further, the first-third upper end-side cut line 30E and the first-third lower-end side of FIG. 3 connecting the terminal ends of the first-second start-side linear cut line 30C and the first-second end-side linear cut line 30D . Although the cut line 30F is shown as a single cut line, it is not limited to a single line, and each line may be composed of a plurality of lines, or the number of lines may be different between the upper end side and the lower end side. Further, the interval between the score lines when a plurality of lines are provided is preferably 1 mm or less. In addition, it is designed so that the level | step difference in the tear opening part of the 1st cut line 3 and 2nd cut line 3 'may be 6 mm or more, and one side ( 1st surface ) of the laminated body which comprises the packaging bag 1, and the other ( 1st ) it is preferred from the viewpoint of capable of picking dihedral) in readily fingers.

Further, in FIGS. 3 and 5 , the first-first start-side convergent cut line 30A, the first-first end-point convergent cut line 30B, the second-first start-side convergent cut line 31A, and the second-first end side. a converging shape score line 31B, three of the outer edge of one of the left-side and right end heat-bonding unit 2 '(left) and the other Tan'en'netsu the left side and right respectively from the three of the outer edge (on the right) was prepared in three specifications converge to one point at a position which does not reach the inner edge of the bonding portion 2 'left side and right edge heat seal portion 2 proceeds in a direction toward the inner edge of the' single central a unplug it, the left side and right end heat seal portion 2 of the 'one (left side) of the two positions of the outer edge and the other (right) from each of the two positions of the outer edge left side and right edge heat seal portion 2 of the' It may be a two specifications converge to one point at a position that does not reach to proceed in a direction toward the inner edge to the inner edge of the left side and right edge heat seal portion 2 ', disconnect the central single In this case, variations of 4 and 6 specifications and even number of specifications are possible in addition to 2 specifications, and if you do not remove one from the center, 5 specifications and 7 specifications are available in addition to 3 specifications. are possible variations of the odd number of, until the inner edge of the Although the number at the starting point side and the end point may be different, in any of the variations, left side and right edge heat seal portion 2 ' There is no change in converging to one point at a position that does not reach.

By the way, in the said embodiment, the 1st 1-1 origin side convergent cut line 30A, the 1st-1 end point side convergent cut line 30B, the 2nd-1 origin side converged cut line 31A, the 2nd-1 end point side converged. The cut line 31B is formed from the outer edge to the inner edge of the left and right edge thermal bonding portions 2 ', but these cut lines 30A, 30B, 31A and 31B are not necessarily left and right edges. The outer edge of the edge thermal bonding portion 2 ′ may not be the starting point, and may be formed so as to extend toward the inner edge from the vicinity of the outer edge, that is, between the outer edge and the inner edge, as shown in FIG. Good.

Further, the first-first start-side convergent cut line 30A, the first-first end-point convergent cut line 30B, the second-first start-side converged cut line 31A, and the second-first end-side converged cut line 31B are These are formed so that they converge at one point on the inner edge side of the left and right edge thermal bonding portions 2 ', but they do not necessarily converge at one point, and are formed in a C shape. Also good. For example, as shown in FIG. 8 , among the first-first starting-side convergent cut lines 30A, a cut line 30A1 extending from the upper side toward the inner edge and a cut line 30A2 extending from the lower side toward the inner edge are on the inner edge side. It can also be configured to be close to each other without contact. When the cut line 30A1 extending from the upper side toward the inner edge contacts the cut line 30A2 extending from the lower side toward the inner edge, the cut lines 30A1 and 30A2 may intersect due to a dimensional error, and thereby the tear line becomes the cut line. However, if it is formed in a square shape as described above, it is possible to prevent the cut lines 30A1 and 30A2 from intersecting. About such a configuration, the same applies to the (1-1) end-point-side convergent cut line (30B), (2-1) start-point-side convergent cut line (31A), and (2-1) end-point-side convergent cut line (31B). Can do. At this time, the starting point of the first-second starting side linear cut line 30C may be in a region between the end of the cut line 30A1 and the end of the cut line 30A2, and is slightly shifted in the left-right direction. Also good. The same applies to the 1-2 end point-side straight cut line 30D, the 2-2 start point side straight cut line 31C, and the 2-2 end point side straight cut line 31D.

Moreover, in the said embodiment, although the 1st-2 starting point side linear cut line 30C and the 1-2nd end point side linear cut line 30D are provided in the 1st cut line 3, the 1st cut line 3 is A configuration without these score lines 30C and 30D may be used. For example, as shown in FIG. 9 , between the first-first start-side converged cut line 30A and the first-first end-side converged cut line 30B, 3 lower cut line 30F can be provided. At this time, as shown in FIG. 9 , the gap S1 between the first-first start-side convergent cut line 30A and the first-third cut lines 30E, 30F, and the first-first end-side converged cut line 30B A gap S2 may be provided between the first and third cut lines 30E and 30F, or such a gap is not provided, and the first and first starting-side converged cut lines 30A and the first and third cut lines 30E, While connecting 30F, it is also possible to connect the first-first end-side convergent cut line 30B and the first-third cut lines 30E, 30F. Even if it does in this way, the same effect as when the 1-2nd starting point side straight cut line 30C and the 1-2 end point side straight cut line 30D are provided can be acquired. Further, the second cut line 3 ′ is also constituted by only the second-third central straight cut line 31E without the 2-2 start-point-side straight cut line 31C and the 2-2 end-point-side straight cut line 31D. be able to.

7 to 9 can be appropriately combined with at least one of the embodiments shown in FIGS . 3 and 5 .

  In addition, the four-side seal type packaging bag has been described so far, but in short, a packaging bag having a configuration in which at least one edge thermal bonding portion is formed at the opposed position of a pair of opposed edges, for example, three-way It may be a seal type or a standing type packaging bag. Further, it goes without saying that all the categories not departing from the gist of the present invention are included in the present invention.

  Next, the laminated body 10 which comprises the packaging bag 1 is demonstrated. As the outer layer of the laminated body 10, since it becomes a basic material constituting the packaging bag 1, a synthetic resin film having excellent properties in mechanical, physical, chemical and the like can be used. Polyamide-based and polypropylene-based resins can be used. Moreover, as a film using these resin, the stretched film extended | stretched to the biaxial direction is suitable. This is because the outer layer 11 is usually subjected to printing and printability is required. The thickness of the film constituting the outer layer 11 may be determined in consideration of cost and the like, but is generally about 12 to 25 μm.

  Moreover, as an aluminum foil used for the intermediate | middle layer 12 of the laminated body 10, the annealed aluminum foil is suitable, and the thickness is about 6-15 micrometers.

  Further, the inner layer 13 of the laminate 10 may be a layer formed from a heat-adhesive resin that can be melted by heat and welded to each other, and is appropriately selected depending on the physical properties required for the packaging bag 1. For example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-α olefin copolymer, ethylene-propylene copolymer , Ethylene-vinyl acetate copolymer, ionomer resin, acid copolymer of ethylene and acrylic acid, ester copolymer of ethylene and acrylic acid ester, and the like. Further, the thickness of the film constituting the inner layer 13 may be determined in consideration of required physical properties and costs.

  The laminate 10 has physical properties required when forming a packaging bag between the intermediate layer 12 and the inner layer 13, such as mechanical toughness, bending resistance, puncture resistance, impact resistance, cold resistance, In order to provide physical properties such as heat resistance and chemical resistance, for example, a strength reinforcing layer made of a film such as polyester, polyamide, polyethylene, polypropylene, polyolefin such as ethylene-propylene copolymer, or a resin layer can be provided. The strength reinforcing layer may be a combination of the film and the resin layer, and the thickness may be determined in consideration of required physical properties and costs.

  Moreover, as a lamination | stacking method of each layer of the laminated body 10 which comprises the packaging bag 1 of this invention, what is necessary is just to laminate | stack suitably using well-known lamination methods, such as a sandwich lamination method and a dry lamination method. The first cut line 3 and the second cut line 3 ′ may be physically formed using a rotary die cutter, but preferably after the laminate 10 is formed using a pulsed laser or the like. Formed on the outer layer 11. As a kind of laser used for this, a carbon dioxide laser, a YAG laser, a semiconductor laser, an argon ion laser, etc. are possible, and it is not particularly limited.

DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Edge thermal bonding part 2 'Left / right edge thermal bonding part 2 "Upper / lower edge thermal bonding part 3 1st cut line 3' 2nd cut line 10 Laminated body 11 Outer layer 12 Intermediate layer 13 Inner layer 20 Synthetic resin biting tool 21 Convex male member 22 Concave female member 30A 1-1 start point converging cut line 30B 1-1 end point converging cut line 30C 1-2 starting point side straight cut Line 30D First-second end-side straight cut line 30E, 30G First-third upper-end cut line 30F, 30H First-third lower-end cut line 31A 2-1 Start-point-side convergent cut line 31B 2-1 End side convergent cut line 31C 2-2 Start point side straight cut line 31D 2-2 End point side straight cut line 31E 2-3 Central side straight cut line α Cut line forming region β Articulating device forming region N1 V-shaped notch N2 U-shaped notch

Claims (6)

Overlaying the inner layers of a rectangular laminate having at least an outer layer, an intermediate layer made of aluminum, and an inner layer made of a heat-adhesive resin to form a laminate on the near side and a laminate on the back side,
The front and back laminates are thermally bonded to each other at the four peripheral edges including the left edge, the right edge, the upper edge, and the lower edge in the plan view of the laminate on the front side. The left edge thermal adhesive part, the right edge thermal adhesive part, the upper edge thermal adhesive part and the lower edge thermal adhesive part,
When the tearing opening provided between the left edge thermal bonding portion and the right edge thermal bonding portion is opened in the left-right direction, the cut surface of the front and back laminates forming the tear opening is formed. It is a four-side sealed type packaging bag that creates a step in the tear opening by making the outer shell different,
The opening means comprises a left-side opening start means, a right-side opening start means, and a step forming means sandwiched between these left-side and right-side opening start means,
The step forming means includes a front-side step forming cut line formed in an outer layer of the front-side laminated body and a back-side step forming cut line formed in an outer layer of the back-side laminated body. With
The step forming cut line on the near side includes an arcuate cut line that swells upward and converges at a single point on the right side and branches from a point on the left side, and an arcuate cut line that bulges downward.
The back-side step forming cut line has a left-right direction at a position corresponding to a position between the arc-shaped cut line that bulges upward and the arc-shaped cut line that bulges downward from the front-side step forming cut line. It has a single score line that progresses to
A packaging bag characterized by that. The left-side opening start means is
Notches or scars on the left side penetrating the near side and back side laminates constituting the left edge thermal bonding part, and
Left edge heat which is a score line formed in the outer layer of the near side laminated body constituting the left edge thermal bonding portion and proceeds in the right direction from the outer edge or the vicinity of the outer edge of the left edge thermal bonding portion. A plurality of cut lines on the front left side extending so as to approach each other at a position that does not reach the inner edge of the bonded portion;
Left edge heat which is a score line formed in the outer layer of the laminate on the back side constituting the left edge thermal bonding portion and proceeds in the right direction from the outer edge or the vicinity of the outer edge of the left edge thermal bonding portion. It is a combination of a plurality of cut lines on the left side extending so as to approach at a position that does not reach the inner edge of the bonded portion,
The right side opening start means is:
A right notch or scar group penetrating the near side and back side laminates constituting the right edge thermal bonding part; and
It is a score line formed in the outer layer of the near-side laminated body constituting the right edge thermal bonding portion, and proceeds to the left from the outer edge or the vicinity of the outer edge of the right edge thermal bonding portion, and the right edge heat. A plurality of cut lines on the right-hand side that extend so as to approach each other at a position that does not reach the inner edge of the bonded portion;
It is a score line formed in the outer layer of the back side laminated body constituting the right edge thermal bonding portion, and proceeds to the left from the outer edge or the vicinity of the outer edge of the right edge thermal bonding portion, and the right edge heat It is a combination of a plurality of cut lines on the back right side that extend so as to approach each other at a position that does not reach the inner edge of the bonded portion,
The packaging bag according to claim 1. The cut line for step formation on the near side is
It is a cut line formed in the outer layer of the front-side laminated body, and proceeds in a right direction from a portion adjacent to the plurality of cut lines on the left side of the near side toward a point on the left side of the step forming line on the near side. One cut line on the left side before
It is a cut line formed in the outer layer of the front-side laminate, and proceeds in the left direction from a portion adjacent to the plurality of cut lines on the right side toward the right point of the step forming line on the front side. And a single score line on the right side
The back side step forming cut line is
One point on the left side of a single cut line provided on the back side step forming cut line from a portion adjacent to the plurality of cut lines on the back left side, which is a cut line formed in the outer layer of the laminated body on the back side A single cut line on the left side that goes to the right toward
One point on the right side of a single cut line provided on the back side step forming cut line from a portion adjacent to the plurality of cut lines on the right side, which is a cut line formed in the outer layer of the back side laminate. Further comprising a single cut line on the right side that proceeds leftward toward
The packaging bag of Claim 2 characterized by the above-mentioned. The single left score line is connected to the central one of the multiple left score lines,
The one cut line on the back right side is connected to one central line of the plurality of cut lines on the right side,
One center line of the plurality of cut lines on the left side, one cut line on the left side, one cut line provided on the cut line for forming a step on the back side, and one on the right side The score line of the book and the center one of the plurality of score lines on the right side are arranged so as to form the same straight line.
The packaging bag according to claim 3. In both the front side and back side laminates, the layers arranged on the inner layer side from the intermediate layer are all composed of an unstretched film and / or an unstretched resin layer.
The packaging bag according to any one of claims 1 to 4, wherein A synthetic resin occlusion device comprising a male member of a ridge and a female member of a ridge that mesh with each other is provided at a position facing the inner surface of the lower side packaging bag than the opening means,
The packaging bag according to claim 1, further comprising a reseal function by biting the male member and the female member.