JP6626620B2 - Pillow packaging bag with weakening line, butting blade for forming weakening line, weakening line forming method, method of manufacturing pillow packaging bag - Google Patents

Description

The present invention relates to a pillow packaging bag provided with a weakening line, a piercing blade for forming a weakening line, a method of forming a weakening line, and a method of manufacturing a pillow packaging bag .

  Spices such as crisps and shichimi, various sauces such as tomato ketchup, and soup stock sold along with small portions of natto are provided to consumers in packaging bags made of film material. This type of packaging bag is disclosed in Patent Document 1.

  To explain the packaging bag disclosed in Patent Document 1, the packaging bag is made of a film material. The packaging bag has a rectangular shape in a plan view, and both side edges and upper and lower ends are heat-sealed in a band shape, and a fluid such as a powder or a liquid is accommodated therein.

  The packaging bag of Patent Literature 1 has an overhanging heat seal portion at an interval below the upper end heat seal portion. The overhanging heat seal portion extends from the left or right side heat seal portion toward the other side heat seal portion.

  The overhanging heat seal portion has a weakening line extending laterally from an edge of the side heat sealing portion, and further has a notch extending upward from the inner end of the weakening line, that is, toward the upper heat seal portion.

  When the packaging bag of Patent Document 1 is opened, a small opening can be formed at the upper corner of the packaging bag by cutting along the line of weakness and tearing in the cutting direction.

  However, the packaging bag of Patent Literature 1 has a drawback that the overhanging heat-sealed portion remains near the opening even after being opened, which hinders the removal of the contents.

  In view of this drawback, a packaging bag disclosed in Patent Document 2 has been proposed. The packaging bag of Patent Literature 2 has a rectangular shape in a plan view similarly to Patent Literature 1 described above, and both side edges and upper and lower ends are heat-sealed in a belt shape, and powder, liquid, and the like are contained therein. A fluid is contained. The packaging bag of Patent Literature 2 has a uniaxially stretched film layer unidirectionally stretched on a layer other than the innermost layer made of a heat-adhesive resin layer.

  In the packaging bag of Patent Document 2, the stretching direction of the uniaxially stretched film layer is set so as to be the vertical direction. A cut is formed at the upper end of the side heat seal portion. By applying a force to tear the cut, the cut can be cut into the side heat seal portion. Then, thereafter, it starts to cut upward in the stretching direction of the uniaxially stretched film layer, whereby the upper corner of the packaging bag can be cut off. This allows a small opening to be made in the upper corner of the packaging bag.

  FIGS. 12 and 13 attached to this specification show a conventional example of a packaging bag having a small opening and having a rectangular shape in plan view. FIG. 12 is a plan view of a packaging bag called a “three-side seal bag”. Referring to FIG. 12, three-side seal bag 10 has heat seal portions 12 and 14 at its upper end and lower end, and has heat seal portion 16 on one side. The upper end heat seal portion 12 is constituted by a stepped heat seal. That is, the upper end heat seal portion 12 includes a wide portion 12a extending from the other side without the side heat seal toward the one side heat seal portion 16, and a side heat seal from the one side end of the wide portion 12a. And a narrow portion 12b extending to the portion 16.

  The space from the edge on one side of the wide portion 12a to the side heat seal portion 16 forms a take-out passage 20 having a smaller cross-sectional area than the content accommodating space 18. A cut 22 is formed in the side heat seal portion 16 at the side edge of the upper end portion. By applying a force so as to cut the upper corner of the three-side seal bag 10 starting from the notch 22, the side heat seal portion 16 starts to cut from the notch 22 and reaches the take-out passage 20. The upper corner can be shredded.

  FIG. 13 is a plan view of a packaging bag called a “four-side seal bag”. The same elements as those in the three-side seal bag 10 are denoted by the same reference numerals, and the four-side seal bag 30 will be described. The four-side seal bag 30 has heat seal portions 12 and 14 at upper and lower ends, and has heat seal portions 16 and 24 on both sides. The upper end heat seal portion 12 includes a wide portion 12a and a narrow portion 12b extending from one end of the wide portion 12a to the side heat seal portion 16, similarly to the three-side seal bag 10. .

  A cut 22 is formed in the side heat seal portion 16 adjacent to the take-out passage 20. By applying a force to tear the upper corner of the four-sided seal bag 30 with the notch 22 as a starting point, the upper corner of the four-sided seal bag 30 is cut off after starting to cut from the notch 22 and reaching the take-out passage 20. be able to.

JP-A-5-254551 JP 2003-112743 A

  The three-side seal bag 10 and the four-side seal bag 30 described with reference to FIGS. 12 and 13 are made of a laminated film material mainly composed of a plastic film. The above-mentioned uniaxially stretched film has a characteristic that the cutting direction can be defined, but is relatively expensive. For this reason, a laminated film material that does not include a uniaxially stretched film layer is often used for the three-side seal bag 10 and the four-side seal bag 30.

  When opening the three-side seal bag 10 and the four-side seal bag 30, the consumer performs an operation of applying a force to tear from the cut 22, and the cutting direction accompanying the opening operation is directed to the direction traversing the takeout passage 20. Is ideal. Thereby, the take-out passage 20 having a relatively small cross-sectional area can be opened.

  However, if the laminated film material itself is a material that has no direction in the cutting direction, the upper corners of the three-side seal bag 10 and the four-side seal bag 30 may not be able to be successfully cut. For example, when the cutting that proceeds from the cut 22 advances to the content accommodating space 18, the contents such as liquids and powders fall or flow out during the shredding operation, and stain the hands of the operator. Could be Also, if the direction of the cutting that advances from the cut 22 deviates from the take-out passage 20 and tears the upper end heat seal portion 12, as a result, the take-out passage 20 cannot be cut, and the take-out opening, which is the original purpose, is formed. Can not do it. In this state, the contents cannot be taken out smoothly.

An object of the present invention is to provide a pillow packaging bag with a weak reduction line, thrust the blade for forming a weakened line, the weakened line forming method, a method of manufacturing the pillow packaging bag.

It is a further object of the present invention to provide a packaging bag provided with a weakening line capable of suppressing the occurrence of spillage or outflow accident of the contents during the opening operation, and to provide a cutting blade for forming the weakening line. .

It is a further object of the present invention to reduce the occurrence of spillage or outflow accidents of contents during the opening operation of packaging bags and small packaging bags made of film material having no direction in the cutting direction. It is an object of the present invention to provide a packaging bag provided with a wire and a cutting edge for forming a weakened wire.

According to a first aspect of the present invention, there is provided the technical problem described above.
A vertical pillow bag provided with a vertical heat seal portion (102) in which both side edges of a resin-made cylindrical laminated film material are bonded together, and an upper end heat seal portion (104),
The upper heat-sealed portion (104) is constituted by a heat-sealed portion of the stepped, stepped with upper heat-sealed portion (104), toward the other side from the one side of the pillow packaging bag, and the longitudinal heat the wide portion extending sealing portion (102) traverses (104a), and a narrow portion located at the other side end of said width wide portion (104a) (104b), the other side of the wide portion (104a) A pillow packaging bag further comprising a removal passageway (110) defined by a rim,
A weakening line (112) formed in a wide portion (104a) of the upper end heat seal portion (104) and extending laterally from one side edge of the pillow packaging bag to the vicinity of the removal passage (110) ,
The weakening line (112) includes a plurality of cutting lines (112b) arranged in a line and intermittently,
Wherein each cutting line (112b) extends laterally basic cut line (114), an auxiliary cutting line extending from a starting point at the top and bottom of one side end of the basic section line of the pillow packaging bag (114) and (116) have a,
Among the basic cutting lines (114), the length dimension (L (A)) of the transverse basic cutting line (114 (A)) crossing one side edge of the vertical heat seal portion (102) is the other basic cutting line. Longer than the length dimension (L (B)) of the cutting line (114 (B))
From one side of the upper end heat seal portion (104), the wide portion (104a) of the upper end heat seal portion (104) is cut along a cutting line formed by the weakening line (112). it is achieved by providing a pillow packaging bag, wherein Rukoto can be opened the taking-out passage (110) by cutting the upper end torn the remainder of the heat-sealed portion (104).

The above technical problem is according to a second aspect of the present invention,
A vertical heat seal portion (102) in which both side edges of a resin-made cylindrical laminated film material are bonded together, and the upper end heat seal portion (104) of a pillow packaging bag provided with an upper end heat seal portion (104), A piercing blade (150) for forming a weakening line (112) consisting of a plurality of cutting lines (112b) in a shape in which the Y character is turned over,
Formed from a plate having a thickness, having a plurality of blades for forming the weakening line (112),
Each blade has a V-shaped cross section,
Each of the blades has a beveled edge (172) in which one edge is positioned relatively low and the other edge is positioned high, and a blade (170) having a V-shaped cross section. The cutting edge edge (172) and a cutting edge base end (174) parallel to each other, formed by two ridge lines intersecting the main body of
One side end face (180) of the blade has two first edges (180a) intersecting in a V-shape forming side edges of a blade edge (170) of the blade, and parallel to each other forming a main body of the blade. Defined by two extending second edges (180b),
One end of the cutting edge base end (174) is located lower than the other edge of the cutting edge (172) of the cutting edge (170) ,
The plurality of blades include a fourth blade (154 (a)) that forms a cutting line that crosses a base edge on one side of the vertical heat seal portion (102), and a third blade that forms another cutting line. Blade (154 (b)),
The length (L3) of the fourth blade (154 (a)) is longer than the length (L4) of the third blade (154 (b)), and the fourth blade (154 (a) )) Is provided below the third blade (154 (b)) .

  The present invention is typically applied to a packaging bag provided with an end heat seal portion. A preferred embodiment of the present invention relates to a pillow bag. Among the plurality of cutting lines included in the weakening line of the pillow bag, a cross-section basic cutting line of a cutting line positioned across one side edge of the vertical heat seal portion of the pillow bag is a basic cutting line of another cutting line. Longer than the line.

  Also, the method for forming a weakening line composed of a plurality of penetrating cutting lines in the pillow bag preferably includes the cutting edge base end of the third blade at the same height level and the other side end. The state where the other side edge of the base end of the cutting edge of the fourth blade enters the packaging bag is set at the stroke end of the pushing blade.

  Other objects, functions and effects of the present invention will become apparent from the detailed description of the preferred embodiments of the present invention described later.

It is a rear view of the packaging bag of a 1st Example. It is the enlarged view which extracted the upper end part of the packaging bag shown in FIG. It is a figure for explaining the shape of the cutting line which constitutes the weakening line provided in the packaging bag of a 1st example. It is a figure for explaining that a cutting line which traverses one side edge of a vertical heat seal part located in the center of the back of a packing bag (pillow bag) of a 1st example is longer than other cutting lines. It is a front view of the thrust blade which forms the weakening line of the packaging bag of 1st Example, and also demonstrates the correspondence of the thrust blade and several cutting lines which form the weakening line of the upper heat seal part of the packaging bag. FIG. It is the figure which looked at the 2nd blade included in the thrust blade from the direction of the arrow shown by X6-X6 line of FIG. It is a front view which shows the front-end | tip part of a 2nd blade. It is a figure for explaining the shape of the end face of the 2nd blade, and formation of a cutting line containing an auxiliary cutting line. It is the enlarged view which extracted the upper end part of the packaging bag of 2nd Example, and is a figure corresponding to FIG. It is a figure for explaining that the present invention is applicable to a three-side seal bag. It is a figure for explaining that the present invention is applicable to a four-side seal bag. It is a figure for explaining the conventional example of a three-side seal bag. It is a figure for explaining the conventional example of a four-side seal bag.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

First embodiment (FIGS. 1 to 8) :
1 to 8 show a packaging bag according to a first embodiment of the present invention. FIG. 1 is a rear view of a pillow bag which is a packaging bag 100 of the first embodiment. Referring to FIG. 1, packaging bag 100 has a rectangular shape in plan view, that is, a rectangular shape. The packaging bag 100, which is a pillow bag, includes a vertical heat seal portion 102 in which a film material is first formed into a cylindrical shape, and then both side edges of the cylindrical film material are bonded.

  The position of the vertical heat seal portion 102 is typically located at the central portion in the width direction on the back surface as shown in the figure, but may be located at a position displaced in the width direction from the central portion. The vertical heat seal portion 102 arranged in the central portion in the width direction is called “central vertical heat seal portion”.

  The central vertical heat seal portion 102 has the shape of a strip flap extending vertically. The packaging bag 100 has an upper end heat seal portion 104 at the upper end and a lower end heat seal portion 106 extending like a band at the lower end.

  The upper end heat seal portion 104 has a stepped shape. In the following description, “one side” of the left and right sides of the packaging bag 100 means the “side” on the base end side (left side in FIG. 1) of the flap-shaped central vertical heat seal portion 102. Conversely, the “other side” means the “side” on the free end side (the right side in FIG. 1) of the flap-shaped central vertical heat seal portion 102.

  As described above, the upper end heat seal portion 104 has a stepped shape. Specifically, the upper end heat seal portion 104 includes a wide portion 104a extending from one side edge toward the other side, and a narrow portion 104b extending from the other side end of the wide portion 104a to the other side edge. ing. The wide portion 104a crosses the central vertical heat seal portion 102. The space between the other side edge of the wide portion 104a and the other side edge of the packaging bag 100 forms a take-out passage 110 having a smaller cross-sectional area than the content accommodating space 108.

  FIG. 2 is a diagram in which an upper end portion of the packaging bag 100 is extracted. A weakening line 112 extending in the lateral direction is formed in the wide portion 104a. The weakening line 112 extends from one side edge of the packaging bag 100 to the vicinity of the takeout passage 110. That is, the end of the weakening line 112 is near the takeout passage 110.

  As a basic configuration, the weakening line 112 includes a notch 112a that is in contact with one side edge of the packaging bag 100 and extends in the lateral direction, and a plurality of cutting lines 112b that are linearly and intermittently arranged in a line following the notch 112a. Consists of The cut 112a and the cutting line 112b both penetrate the packaging bag 100. As a modified example, the cut 112a and the cutting line 112b are not limited to the cutting line penetrating the film material, but may be a cutting line that is easily torn, such as a half cut.

  The configuration of the cutting line 112b penetrating the packaging bag 100 will be described with reference to FIG. Each cutting line 112b is composed of a basic cutting line 114 extending in the lateral direction, and an auxiliary cutting line 116 extending in a direction crossing the basic cutting line 114 from the starting point of each basic cutting line 114, that is, vertically. In the first embodiment, the auxiliary cutting line 116 is constituted by an inclined cutting line that extends obliquely from the starting point of each basic cutting line 114 toward one side of the packaging bag 100.

  Each cutting line 112b composed of a basic cutting line 114 and a pair of auxiliary cutting lines 116 extending obliquely from the starting point of each basic cutting line 114 has a shape in which the Y-shape is turned over. As a modification, the auxiliary cutting line 116 may be constituted by a cutting line extending in the vertical direction from the starting point of the basic cutting line 114. That is, each cutting line 112b may have a shape in which a T-shaped or Y-shaped upper part of a U-shape or the like is turned over.

  When the cutting line 112b has a shape in which the Y-shape is turned sideways, the horizontal interval between two adjacent cutting lines 112b, that is, the cutting lines 112b, 112b including the basic cutting line 114 and the auxiliary cutting line 116 is set to “1”. In this case, it is preferable that the distance between the tips of the upper and lower auxiliary cutting lines 116 is set to “1.5” or more, preferably “1.75” or more. Thus, when the tearing is performed at the time of opening, the break away from the opening line constituted by the basic cutting line 114 is received by the auxiliary cutting line 116, and the tearing can be stably performed along the opening line. Further, the length of the cutting line 112b including the basic cutting line 114 and the auxiliary cutting line 116 in the horizontal direction is preferably set to 5 mm or less. Conventionally, it has been difficult to form the cutting line 112b at the above-described length and ratio, but these can be suitably achieved by the method of forming a butting blade and a weakened line of the present invention described later.

  FIG. 4 is a diagram for describing the basic cutting line 114 included in the cutting line 112b. Among the plurality of basic cutting lines 114, the length L (A) of the transverse basic cutting line 114 (A) that traverses one side edge of the central vertical heat seal portion 102 is different from that of the other basic cutting lines 114 (B). It is longer than the length dimension L (B). Thus, in the step of forming the weakening line 112 in the packaging bag 100 described below, the transverse basic cutting line 114 (A) is reliably positioned while crossing the base end edge 102a on one side of the central vertical heat seal portion 102. be able to.

  From the same viewpoint, it is preferable that the length dimension (not shown) of the cut 112a is set longer than the length dimension L (B) of the other basic cutting line 114 (B). That is, it is preferable to set the cutting line (cut) 112a located in contact with the side edge of the upper heat-seal portion 104 of the pillow bag longer than the other basic cutting lines 114 (B). Further, the lengths L (B) of all the basic cutting lines 114 (B) may be the same, or may be different. For example, the length L (B) of the basic cutting line 114 (B) on the side closer to the cut 112a may be set longer or shorter than the basic cutting line 114 (B) on the far side.

  In the three-side seal bag 10 and the like described with reference to FIG. 12, the internal capacity is limited by the presence of the heat seal portion 16 on the side. On the other hand, in the pillow bag which is the packaging bag 100 of the embodiment, the heat seal portion does not exist on the side. Utilizing the features of this pillow bag, whose contents are not limited, the basic cross section cutting line 114 (A) crosses the base edge 102a on one side of the central vertical heat seal portion 102 (FIG. 4), so that the bag can be reliably opened. A high quality pillow bag can be realized.

  As a general theory, in the case of a paper container or the like, when a tear that breaks when opening the box deviates from the opening line, the notch is formed in a Y-shape or T-shape so that it can be corrected by the next cut. That is being done. However, it is considered that it is difficult to form such a cut in a resin film bag or the like. That is, it has been difficult to produce a protruding blade capable of forming a Y-shaped or T-shaped cut in a resin film bag or the like. In particular, it has been more difficult to produce a piercing blade that forms a small notch of the above shape. A proposal for this is a thrust blade 150 shown in FIG.

  FIG. 5 shows a piercing blade 150 for forming the weakening line 112 having the shape in which the above-described Y character is turned sideways. The pushing blade 150 has first and second blades 152 and 154 formed by cutting a plate material having a thickness. The first blade 152 is a blade for forming the cut 112a. The second blade 154 is a blade for forming the cutting line 112b.

  The first blade 152 has a length Lc, and the length Lc is set to a value larger than the length of the cut 112a. Accordingly, even if a relative displacement between the pushing blade 150 and the packaging bag 100 occurs in the step of forming the weakening line 112 in the packaging bag 100, the first blade 152 reliably ensures one side edge of the packaging bag 100. Can be formed in contact with the notch 112a.

  The second blade 154 includes a third blade 154 (b) for forming a cutting line 112b including the basic cutting line 114 (B) and a fourth blade 154 (b) for forming a transverse basic cutting line 114 (A). Blade 154 (a). The length L3 of the fourth blade 154 (a) is longer than the length L4 of the third blade 154 (b). Further, the fourth blade 154 (a) protrudes below the third blade 154 (b). This protrusion amount is indicated by ΔL1 (FIG. 5).

  In addition, the first blade 152 for forming the cut 112a in contact with one side edge of the packaging bag 100 is longer than the third blade 154 (b) and protrudes downward similarly to the fourth blade 154 (a). ing. This protrusion amount is indicated by ΔL2 (FIG. 5). In this embodiment, the protrusion amount ΔL1 of the fourth blade 154 (a) is equal to the protrusion amount ΔL2 of the first blade 152, but is not limited to this.

  In the embodiment, as described above, the first blade 152 and the fourth blade 154 (a) protrude below the third blade 154 (b). As a modification, the height level at which all the blades 152, 154 (a) and 154 (b) project downward may be the same (the projection amounts ΔL1 and ΔL2 are 0). In this case, the inclination angles of the cutting edges 156, 158, 160 of each blade are set so that the ends of the cutting edges 156b, 158b, 160b of all the blades are positioned at the height level 162 (FIGS. 5 and 7). Is preferably adjusted.

  The first blade 152, the third blade 154 (b), and the fourth blade 154 (a) have inclined cutting edges 156, 158, and 160. The shapes of the cutting edges 156, 158, 160 are shown in FIGS. As can be seen from FIG. 6, the cutting edges 156, 158, 160 have a V-shaped cross section when viewed from one side. Referring to FIG. 7, the cutting edges 156, 158, and 160 have inclined cutting edges 156a, 158a, and 160a having one edge located at a lower position and the other edge located at a higher position, and edge edges 156a, 158a, It has a cutting edge base end 156b, 158b, 160b parallel to 160a. That is, the two ridge lines where the blade edges 156, 158, 160 having a V-shaped cross section and the blade main body form the blade edge base ends 156b, 158b, 160b.

  The ends or other ends of the cutting edge bases 156b, 158b, 160b are positioned at a common height level 162 (FIGS. 5 and 7). The stroke end of the pushing blade 150 is set at this height level 162, and the pushing blade 150 pierces the packaging bag 100, so that a cut 112a and a cutting line 112b penetrating the packaging bag 100 are formed.

  The contents of the packaging bag 100 are stored in a state where the upper end is opened, and then the upper end heat seal portion 104 is formed and sealed. In the process of forming the upper end heat seal portion 104 and sealing the packaging bag 100, the pushing blade 150 enters the packaging bag 100 to form the weakened line 112. That is, the weakening line 112 is formed simultaneously with the sealing of the packaging bag 100. Of course, the weakening line 112 may be formed after the packaging bag 100 is sealed.

  The operation of the second blade 154 for forming the basic cutting line 114 will be described with reference to FIG. In this description, the second blade 154, that is, the blade edges 158 and 160 of the third and fourth blades 154 (b) and 154 (a) are collectively referred to as the "blade edge 170" of the second blade 154. Further, the blade edges 158a and 160a of the third and fourth blades 154 (b) and 154 (a) are collectively referred to as a "blade edge 172" of the second blade 154. Further, the blade bases 158b and 160b of the third and fourth blades 154 (b) and 154 (a) are collectively referred to as a "blade base 174" of the second blade 154.

  Referring to FIG. 8, second blade 154 is made of a plate having a thickness T. The cutting edge 170 of the second blade 154 has a V-shaped cross section as described above. Therefore, the end surface 180 of the second blade 154 on one side of the packaging bag 100 has two lower edges, that is, two first edges 180 a intersecting in a V-shape forming a side edge of the blade edge 170, and a main body of the second blade 154. And two second edges 180b extending in parallel with each other.

  When the second blade 154 enters and its leading edge 172 pierces the packaging bag 100, the relatively lower edge of the leading edge 172 forms the starting point of the basic cutting line 114. Since the blade edge 172 has an inclined shape such that the edge on the other side is located at a relatively high position, when the second blade 154 advances, the basic cutting line 114 moves to the other side of the packaging bag 100. Stretch toward. (2) to (4) of FIG. 8 show a process in which the basic cutting line 114 extends as the second blade 154 enters.

  At the same time as the formation of the basic cutting line 114, the end point of the auxiliary cutting line 116 is first formed at the first edge 180a with the intrusion of the second blade 154. The auxiliary cutting line 116 is extended by the first edge 180a as the penetration of the second blade 154 proceeds. Then, when shifting from the first edge 180a to the second edge 180b, the extension of the auxiliary cutting line 116 stops. (2) to (4) of FIG. 8 show a process in which the auxiliary cutting line 116 extends as the second blade 154 enters.

  As described above, by the butting blade and the weakening line forming method of the present invention, it is possible to reliably form the weakening line 112 having the shape in which the Y-shape is turned sideways. For example, it is possible to smoothly form a line of weakening in the film material by making a stroke of the piercing blade of the present invention in conjunction with the heat seal bar of the pillow packaging machine.

  The packaging bag 100 has a size of, for example, about 140 mm in length and about 55 mm in width, and stores liquid condiments such as powdered condiments such as bite and sardine, pepper powder, and udon noodles.

  The packaging bag 100 is made of, for example, a laminated film material having a plurality of layers. The specific configuration is (outermost layer) OPP / print / deposition PET / DL / PE (innermost layer). As another configuration, (outermost layer) PET / printing / deposition PET / DL / PE (innermost layer) may be used.

  Although the case where the weakening line 112 is formed in the packaging bag 100 has been described in detail, the butting blade and the weakening line forming method of the present invention can be applied to a case where the weakening line is widely formed in a film material and a packaging container made of the film material. Can be applied. That is, the present invention can be applied to a resin film material including the laminated film material described in this specification, a paper film material (particularly, a film material obtained by combining paper and resin), and the like. As the packaging container, it can be suitably applied to a small packaging container, particularly a small packaging bag. As a rectangular packaging bag in plan view, a packaging bag having a length of 50 to 300 mm in length × 40 to 200 mm in width is exemplified.

  The laminated film material may be selected according to the contents to be put in the packaging bag 100. If the content is liquid soup, dressing, mayonnaise or ketchup of instant noodles, for example, select a laminated film material consisting of (outermost layer) Ny / printing / DL (dry laminating) / deposited PET / DL / PE (innermost layer) do it. If the contents are, for example, paste, spread, or source (the outermost layer), a laminated film material consisting of Ny / print / DL / AL / DL / PE (the innermost layer) may be selected. If the Japanese-style seasoning is a content, a laminated film material of (outermost layer) OPP / printing / DL / PET / DL / PE (innermost layer) may be selected. If the curry powder or the like is a content, a laminated film material of (outermost layer) OPP / printing / DL / EVOH / PE / PE (innermost layer) may be selected.

Examples of other laminated film materials are as follows.
(1) (outermost layer) laminated PET / printed / DL / PE (innermost layer) film material (spice);
(2) (outermost layer) laminated film material of PET / printing / DL / PE (innermost layer) (mustard, seasoning, salt pepper, salt);
(3) (outermost layer) Ny / print / DL / PE (innermost layer) laminated film material (buckwheat noodles, mustard, wasabi, salt, oil);
(4) (outermost layer) laminated film material of barrier Ny / PE / PE (innermost layer) (dressing, mayonnaise, dumpling sauce, miso sauce, tartar sauce);
(5) (outermost layer) laminated film material of OPP / printing / DL / PE (innermost layer) (salt pepper);
(6) (Outermost layer) Laminated film material of OPP / printing / DL / CPP (innermost layer)

  The contents to be put into the packaging bag of the present invention may be various liquids, viscous substances (pastes, miso, spreads, etc.) and powders, as can be seen from the above examples.

  The packaging bag of the present invention is generally used for storing natto soup stock in addition to the sizes already found on the market, for example, 110 mm × 65 mm, 135 mm × 67 mm, 70 mm × 55 mm, 155 mm × 45 mm. The size may be 50 mm × 40 mm.

  As described above, the weakening line 112 of the packaging bag 100 is composed of the cut 112a in contact with one side edge of the packaging bag 100, and a plurality of cutting lines 112b arranged in a line and intermittently following the cut 112a. Have been. Each cutting line 112b is composed of a basic cutting line 114 extending in the lateral direction and an auxiliary cutting line 116 extending from the starting point in a direction crossing the basic cutting line 114.

  When the consumer starts the operation of opening the packaging bag 100, the upper end heat seal portion 104 starts to be cut from the cut 112a. The upper end heat seal portion 104 is cut in accordance with the cutting line in a state of being aligned with the basic cutting line 114 arranged in a horizontal line, and a portion of the takeout passage 110 is cut along the extension line.

  The consumer's operation of opening the packaging bag 100 is individual. Even if the cutting of the upper end heat seal portion 104 deviates from the cutting line composed of the plurality of basic cutting lines 114 arranged in a row while opening the packaging bag 100, the deviated cutting is assisted. When it comes into contact with the cutting line 116, the cutting direction is corrected by the auxiliary cutting line 116, and the cutting direction is returned to the cutting line. That is, the cutting on the cutting line formed by the plurality of cutting lines 112b arranged in a row can be promised by the auxiliary cutting line 116. Thereby, in the cutting of the upper end heat seal portion 104, it is possible to prevent an erroneous opening accident that goes out of the cutting line to the contents storage space 108 or to the upper end edge of the packaging bag 100.

  Since the ends of the plurality of cutting lines 112b linearly arranged in a horizontal line, that is, the ends of the weakening lines 112, are located adjacent to the take-out passage 110, the upper end heat seal portion 104 is cut along the cutting line with the opening operation. Following the cutting, the take-out passage 110 is opened, and the remaining portion of the upper heat seal portion 104 can be cut off. Since the weakening line 112 extends to the vicinity of the take-out passage 110, it is possible to increase the reliability of breaking the take-out passage 110.

Second embodiment (FIG. 9) :
FIG. 9 shows an upper end portion of the packaging bag according to the second embodiment of the present invention. In the description of the packaging bag 200 of the second embodiment, the same elements as those of the packaging bag 100 of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

  Referring to FIG. 9, similarly to the first embodiment, packaging bag 200 has a weakened line 202 at upper end heat seal portion 104. As a basic configuration, the weakening line 202 includes a notch 112a that is in contact with one side edge of the packaging bag 200 and extends in the lateral direction, and a plurality of cutting lines 112b arranged in a line following the notch 112a. Each of the cutting lines 112b includes a basic cutting line 114 and an auxiliary cutting line 116 extending in a direction crossing the basic cutting line 114 from the starting point of the basic cutting line 114 and each of the basic cutting lines 114. Same as in the example.

  As can be clearly understood from FIG. 9, the weakening line 202 of the packaging bag 200 of the second embodiment has its end portion 202a directed obliquely upward. That is, the end portion 202a of the weakening line 202 extending linearly in the lateral direction from one side edge of the packaging bag 200 toward the other side is directed toward the upper corner where the takeout passage 110 of the packaging bag 200 is located. It is pointed diagonally upward.

  As described above, in the packaging bag 200, since the direction of the end portion 202a of the weakening line 202 is directed obliquely upward, following the cutting of the upper end heat seal portion 104 on the cutting line accompanying the opening operation. Thus, the cutting of the portion of the take-out passage 110 can be effectively prevented from proceeding obliquely downward, that is, to the content accommodating space 108. At the same time, the portion of the take-out passage 110 is opened so as to taper diagonally upward along the cutting line directed diagonally upward, so that the contents can be easily poured.

  As described above, the embodiment of the present invention has been described by taking a so-called pillow bag as an example. However, the present invention can be applied to other types of bags as illustrated in FIGS. FIG. 10 shows an example 300 in which the present invention is applied to the three-side seal bag described with reference to FIG. FIG. 11 shows an example 400 in which the present invention is applied to the four-sided seal bag described with reference to FIG. 10 and 11, the same reference numerals are given to the elements already described. In the packaging bag 300 of FIG. 10 and the packaging bag 400 of FIG. The weakening line 112 is constituted by a cut 112a and a plurality of cutting lines 112b. The cutting line 112b is constituted by a basic cutting line 114 and an auxiliary cutting line 116 extending vertically from the starting point of each basic cutting line 114. I have.

100 Packaging bag of the first embodiment (pillow bag)
102 Central vertical heat seal portion 102a Base edge on one side of vertical heat seal portion 104 Upper heat seal portion 104a Wide portion of upper heat seal portion 104b Narrow portion of upper heat seal portion 110 Extraction passage 112 Weak line 112a Cut 112b Cutting Line 114 Basic cutting line 116 Auxiliary cutting line 150 Thrust blade 152 First blade (forms cut)
154 second blade (forms cutting line)
170 cutting edge 172 cutting edge 174 cutting edge base end 180a first edge crossing in a V-shape 180b second edges extending parallel to each other and forming the main body of the second cutting edge

Claims (6)

A vertical pillow bag provided with a vertical heat seal portion (102) in which both side edges of a resin-made cylindrical laminated film material are bonded together, and an upper end heat seal portion (104),
The upper end heat seal portion (104) is constituted by a stepped heat seal portion, and the stepped upper end heat seal portion (104) extends from one side of the pillow packaging bag to the other side, and A wide portion (104a) extending across the seal portion (102), and a narrow portion (104b) located on the other side of the wide portion (104a), and the other side of the wide portion (104a) A pillow packaging bag further comprising a removal passageway (110) defined by a rim,
A weakening line (112) formed in a wide portion (104a) of the upper end heat seal portion (104) and extending laterally from one side edge of the pillow packaging bag to the vicinity of the removal passage (110),
The weakening line (112) includes a plurality of cutting lines (112b) arranged in a line and intermittently,
Each cutting line (112b) is a basic cutting line (114) extending in the lateral direction, and an auxiliary cutting line (116) extending vertically from the starting point of the basic cutting line (114) on one side of the pillow packaging bag. Has,
Among the basic cutting lines (114), the length dimension (L (A)) of the transverse basic cutting line (114 (A)) crossing one side edge of the vertical heat seal portion (102) is the other basic cutting line. Longer than the length dimension (L (B)) of the cutting line (114 (B))
From one side of the upper end heat seal portion (104), the wide portion (104a) of the upper end heat seal portion (104) is cut along a cutting line formed by the weakening line (112). A pillow packaging bag, characterized in that the take-out passage (110) can be opened by cutting off the remaining portion of the upper end heat seal portion (104).   The pillow packaging bag of claim 1, wherein the pillow packaging bag is made from a film material that is not directional in the cutting direction.   The pillow packaging bag according to claim 2, wherein the cutting line (112b) has a shape in which a Y-shape is turned over. A vertical heat seal portion (102) in which both side edges of a resin-made cylindrical laminated film material are bonded together, and the upper end heat seal portion (104) of a pillow packaging bag provided with an upper end heat seal portion (104), A piercing blade (150) for forming a weakening line (112) consisting of a plurality of cutting lines (112b) in a shape in which the Y character is turned over,
Formed from a plate having a thickness, having a plurality of blades for forming the weakening line (112),
Each blade has a V-shaped cross section,
Each of the blades has a beveled edge (172) in which one edge is positioned relatively low and the other edge is positioned high, and a blade (170) having a V-shaped cross section. The cutting edge edge (172) and a cutting edge base end (174) parallel to each other, formed by two ridge lines intersecting the main body of
One side end face (180) of the blade has two first edges (180a) intersecting in a V-shape forming side edges of a blade edge (170) of the blade, and parallel to each other forming a main body of the blade. Defined by two extending second edges (180b),
One end of the cutting edge base end (174) is located lower than the other edge of the cutting edge (172) of the cutting edge (170) ,
The plurality of blades include a fourth blade (154 (a)) that forms a cutting line that traverses a base edge on one side of the vertical heat seal portion (102), and a third blade that forms another cutting line. Blade (154 (b)),
The length (L3) of the fourth blade (154 (a)) is longer than the length (L4) of the third blade (154 (b)), and the fourth blade (154 (a) )) Protrudes below the third blade (154 (b)) . By a stroke of the thrust blade according to claim 4, line of weakness forming method of forming the weakened line to the heat-sealed portion. By a stroke of the thrust blade according to claim 4, to form the weakened line to the pillow packaging bag, a manufacturing method of the pillow packaging bag.

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