Bag making machine and method for manufacturing multi-connected packaging bags

Abstract

To provide a bag making machine and a manufacturing method of a multiple string packaging bag capable of suppressing burr height by perforation processing to be small, capable of consistently automating a manufacturing process of a multiple string packaging bag, and capable of yielding high productivity.SOLUTION: In manufacturing a multiple string packaging bag constituted so as to be able to be cut away to isolated pouch containers by providing cut-away perforation lines at a partition seal part partitioning neighboring pouch containers to each other, a bag making machine is constituted to be provided with crushing means which presses a perforation forming site from both sides of a film material thickness direction and perforating means being neighboring to each other so that the crushing process for crushing a burr inevitably formed by the perforation process applied to a film material is run. The perforating means and the crushing means are arranged at such a position that the crushing process is run during a cooling process of the partition seal part formed by heat-sealing the film material.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a bag-making machine and a manufacturing method for manufacturing a multi-connected packaging bag configured to be separable into individual pouch containers by providing a separation perforation line in a partition seal portion having a partition seal portion that partitions adjacent pouch containers from each other.

Background Art

[0002] Currently, in pouch packaging using a pouch formed by heat-sealing a film into a bag shape as a packaging container, a packaging form is known in which a plurality of pouch containers are connected in series to form a multi-connected packaging bag (connected pouch) and packed into a cosmetic box or the like (see, for example, Patent Document 1). Such a multi-connected packaging bag is configured to be separable into individual pouch containers by providing, for example, a separation perforation line between adjacent pouch containers.

[0003] This type of multi-connected packaging bag can be manufactured, for example, by performing in-line each of the following steps: a seal portion forming step of forming a peripheral seal portion and a partition seal portion that partitions adjacent pouch containers from each other by heat-sealing a predetermined region of an intermittently conveyed film material; a perforation processing step of forming a separation perforation line in the partition seal portion; a notch forming processing step of forming an opening notch in each individual pouch container; a corner cut processing step of performing, for example, R processing on the four corner portions of each individual pouch container; and a cutting processing step of cutting out the multi-connected packaging bag along the outer peripheral contour. The seal portion forming step usually includes a cooling step of cooling the seal forming location, and the perforation processing is performed on the sufficiently cooled partition seal portion.

[0004] In perforation processing, for example, a separation perforation line in which cut portions and non-cut portions are alternately provided is formed by vertically moving a comb-shaped processing blade having a single-edge shape or a double-edge shape blade portion by an appropriate driving device (see, for example, Patent Document 2). Here, the length of the cut portion or the length of the non-cut portion is adjusted by the pushing amount of the processing blade.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] In such perforation processing, when the processing blade is pushed in, the back side of the film material is stretched, and "burrs (caeli)" are inevitably formed in a state where the film material bulges. However, the fact is that it is difficult to prevent the generation of "burrs" due to perforation processing.

[0007] In addition, when handling and stacking multi-connected packaging bags cut out in the cutting process, due to the presence of "burrs", the multi-connected packaging bags cannot be stacked flat, resulting in stacking defects. Furthermore, the presence or absence of adhered processing chips on the multi-connected packaging bags can be detected, for example, by detecting changes in the thickness of the multi-connected packaging bags. However, due to the presence of "burrs", it may be determined that processing chips are adhered. For this reason, the presence or absence of adhered processing chips on the multi-connected packaging bags must be confirmed by an operator, which causes a decrease in the productivity of the multi-connected packaging bags. As described above, the presence of "burrs" due to perforation processing hinders the improvement of the processing speed of the bag-making machine and prevents the automation of the manufacturing line.

[0008] The present invention has been made based on the above circumstances, and an object thereof is to provide a bag-making machine and a method for manufacturing a multi-connected packaging bag that can suppress the height of burrs due to perforation processing to a small level, enable the consistent automation of the manufacturing process of the multi-connected packaging bag, and obtain high productivity.

Means for Solving the Problems

[0009] The bag-making machine of the present invention has a partition seal portion that partitions adjacent pouch containers from each other, and is configured to manufacture a multi-connected packaging bag that is configured to be separable into individual pouch containers by providing a perforation line in the partition seal portion. The bag-making machine includes a first seal portion forming unit that forms a bottom seal portion of each pouch container in the multi-connected packaging bag for a film material that is intermittently conveyed, and a second seal portion forming unit that forms a partition seal portion and side seal portions of each pouch container in the multi-connected packaging bag, and a perforation processing means that forms a perforation line in the partition seal portion. A crushing processing means that presses the perforation forming location in the film material from both sides in the thickness direction of the film material is provided adjacent to the perforation processing means. , the second seal portion forming unit includes a sealing unit for heat-sealing the film material and a cooling unit for cooling the sealed portion of the film material. The cooling unit includes a plurality of cooling means arranged in the film material conveyance direction. The perforation processing means is arranged at a position where cooling treatment is performed before and after the perforation processing by the perforation processing means. Each of the plurality of cooling means includes a cooling pressing member for cooling while pressing the film material from both sides in the thickness direction. The crushing processing means includes a pair of crushing pressing members facing each other with the film material conveyance path therebetween. At least one of the crushing pressing members is configured such that the contact surface with respect to the perforation line forming portion in the film material is narrower than the contact surface with respect to the film material of the cooling pressing member By being configured in this way, the above problems are solved.

[0010] Further, the method for manufacturing a multi-connected packaging bag of the present invention is a method for manufacturing a multi-connected packaging bag that has a partition seal portion that partitions adjacent pouch containers from each other, and is configured to be separable into individual pouch containers by providing a perforation line in the partition seal portion. The method includes a first seal portion forming step of forming a bottom seal portion of each pouch container in the multi-connected packaging bag for an intermittently conveyed film material, a second seal portion forming step of forming a partition seal portion and side seal portions of each pouch container in the multi-connected packaging bag for the film material, a perforation processing step of forming a perforation line in the partition seal portion, and a crushing processing step of pressing the perforation forming location formed in the perforation processing step from both sides in the thickness direction of the film material. by a pair of crushing pressing members By including this, the above problems are solved. In the second seal portion forming step, a sealing step of heat-sealing the film material and a cooling step of gradually cooling the sealed portion formed in the sealing step are included. The perforation processing step and the crushing processing step are performed during the cooling step. In the crushing processing step, the perforation line forming portion formed in the perforation processing step is cooled while being pressed from both sides of the film material by the cooling pressing member. As at least one of the crushing pressing members, one configured such that the contact surface with respect to the perforation line forming portion in the film material is narrower than the contact surface with respect to the film material of the cooling pressing member is used By being configured in this way, the above problems are solved.

Effects of the Invention

[0011] The invention according to claim 1 and Claim 6 of the present invention According to the invention related thereto, by pressing the perforation formation location on the film material from both sides in the thickness direction of the film material with a crushing means, it is possible to crush the burrs (raised portions) inevitably generated by the perforation process, and it is possible to suppress the height of the burrs to be small. For this reason, when handling the multi-connected packaging bags, they can be substantially flatly overlapped and stacked, and the presence or absence of adhering processing scraps to the multi-connected packaging bags can be confirmed by an appropriate processing scrap detection device. Therefore, it becomes possible to automate the manufacturing process of the multi-connected packaging bags consistently, and high productivity can be obtained.

[0012] Also, When the perforation process is performed in a state where the seal locations constituting the partition seal portion are cooled to a certain extent, it becomes difficult for burrs to occur, and when the crushing process is performed in a state where the seal locations are maintained at a higher temperature state than other portions, the burrs generated by the perforation process can be surely crushed.

[0013] the invention according to Claim 2 of the present invention According to this, without using a special device, it is possible to easily perform the crushing process by using an existing cooling means for pressing the film material from both sides in the thickness direction. Furthermore, While ensuring a sufficient cooling function for the seal locations, it becomes possible to increase the surface pressure and efficiently press the burrs.

[0014] Claim 3 of the present invention According to the invention related to Claim 5 of the present invention According to the invention related thereto, since the processing blade of the perforation processing means has a double-edge-shaped blade portion, or since the processing blade has a single-edge-shaped blade portion with a small thickness of the blade plate, the processing blade can easily enter straight into the film material and the cutting resistance becomes small. For this reason, it becomes possible to surely cut the film material without stretching it, and it becomes possible to make it difficult for burrs themselves to occur in the perforation process. Claim 4 of the present invention According to the invention related thereto, by having a cutting edge with a double-edge shape having a small thickness of the blade plate, the above effects can be obtained more reliably, and the height of burrs in the resulting multi-connected packaging bag can be suppressed to be extremely small.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0016] Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, regarding the multi-connected packaging bag manufactured by the bag-making machine of the present invention, a multi-connected packaging bag having a structure in which two pouch containers are connected in the left-right direction (hereinafter referred to as "twin pouch") will be described as a specific example.

[0017] [Multi-connected Packaging Bag] As shown in FIG. 1, the twin pouch 80 is formed into a bag shape by heat-sealing three sides of a pair of overlapped films to form a peripheral seal portion 83, and a partition seal portion 86 extending in the vertical direction is formed at the central portion in the left-right direction, so that the area surrounded by the peripheral seal portion 83 is partitioned into two accommodating portions 82, 82, and two pouch containers 81a, 81b of the same size and independent of each other have a structure continuous in the left-right direction. On the upper end side of the portion constituting one side seal portion 85a of each of the pouch containers 81a, 81b in the peripheral seal portion 83, the opening position of each of the pouch containers 81a, 81b is set, and a notch 95 is provided by cutting the outer edge of the peripheral seal portion 83 at the opening position.

[0018] The partition seal portion 86 is formed so as to be continuous with the bottom seal portion 84 in the peripheral seal portion 83 and extend to the upper end. The partition seal portion 86 is formed so that when the twin pouch 80 is separated into the individual pouch containers 81a, 81b, the other side seal portion 85b has a shape symmetrical to the one side seal portion 85a provided with the notch 95.

[0019] A tear perforation line 90 in which a cut portion and a non-cut portion are alternately provided is formed in the partition seal portion 86. The tear perforation line 90 is formed so as to be cut from the upper end edge of the twin pouch 80 and extend along the partition seal portion 86, so that the pouch containers 81a, 81b can be easily separated. The tear perforation line 90 is not extended to the lower end edge of the twin pouch 80, so that even when the twin pouch 80 accidentally drops from its lower end side, it is possible to prevent the bag from being broken from the lower end side with the tear perforation line 90 as a trigger.

[0020] As the film constituting the twin pouch 80, for example, a laminated film having a structure in which a polypropylene layer with a thickness of 50 to 100 μm, an aluminum layer with a thickness of 5 to 15 μm, a nylon layer with a thickness of 10 to 30 μm, and a polyethylene terephthalate layer with a thickness of 10 to 30 μm are sequentially laminated from the inside arranged opposite to each other during bag making is used.

[0021] Next, a bag making machine for manufacturing the twin pouch 80 as described above will be described.

[0022] [Bag making machine] As shown in FIG. 2, a bag making machine 10 according to an embodiment of the present invention includes an intermittent feeding mechanism 11 that intermittently conveys a strip-shaped resin film material F in the horizontal direction while alternately repeating conveyance and stop, and a first seal portion forming unit 15, a second seal portion forming unit 20, a notch forming device 50, a corner cut processing device 55, a laser cut processing device 60, and a cutting processing device 65 are arranged in order from the upstream side in the film material conveyance direction along the film material conveyance path. In the present embodiment, as shown in FIG. 3, in order to improve the manufacturing efficiency, for example, a configuration is adopted in which two twin pouches 80 are simultaneously manufactured (two-up) along the film material conveyance direction. In the film material F, two twin pouch portions 80a, 80a are formed side by side in the film material width direction such that the open ends face each other and the bottoms are located on the side edge side of the film material F.

[0023] The film material F is, for example, a laminate in which a front surface side film and a back surface side film are overlapped. When the pouch containers 81a, 81b in the twin pouch 10 are configured in a standing form having bottoms, it is a laminate in which a bottom film is sandwiched in a folded state between the front surface side film and the back surface side film.

[0024] The first seal portion forming unit 15 forms the bottom seal portions 84 of the individual pouch containers 81a, 81b in the twin pouch 80 with respect to the intermittently conveyed film material F, and includes a seal unit 16 that heat-seals a predetermined portion of the film material F, and a cooling unit 17 that cools the formed seal portion. The seal unit 16 is arranged to extend in the film material conveyance direction and is configured to heat and press the film material F from both sides in the thickness direction. The cooling unit 17 is arranged to extend in the film material conveyance direction and is configured to cool while pressing the seal portion in the film material F from both sides in the thickness direction.

[0025] The second seal portion forming unit 20 forms the partition seal portion 86 in the twin pouch 80 and one side seal portion 85a of the individual pouch containers 81a, 81b with respect to the intermittently conveyed film material F, and includes a seal unit 21 that heat-seals a predetermined portion of the film material F, and a cooling unit 25 that cools the formed seal portion. The seal unit 21 is arranged to extend in the film material width direction, and three heating and pressing means 22 that heat and press the film material F from both sides in the thickness direction are arranged side by side in the film material conveyance direction, and are configured to be able to heat and press step by step at each intermittent feed the predetermined portions where the partition seal portion 86 and one side seal portion 85a of the individual pouch containers 81a, 81b are to be formed. The cooling unit 25 is arranged to extend in the film material width direction, and a first cooling means 26a and a second cooling means 26b each having a cooling pressing member that cools while pressing the seal portion in the film material F from both sides in the thickness direction are arranged side by side in the film material conveyance direction, and are configured to be able to cool step by step at each intermittent feed the seal portions that constitute the partition seal portion 86 and one side seal portion 85a of the individual pouch containers 81a, 81b. The cooling pressing member is constituted by, for example, a flat plate-shaped metal plate that is long in the film material width direction.

[0026] As shown in FIG. 3, the notch forming device 50 is configured to punch notch holes 95a in the opposing side seal portions of each of two twin pouch portions 80a adjacent to each other in the length direction of the film material F by punching, and includes a die 51 and a punch 52 having a punching blade and cooperating with the die 51 to punch the notch holes 95a. The punch 52 is disposed opposite to the die 51 with the conveyance path of the film material F therebetween, and is driven to move relative to the die 51 so as to approach and separate therefrom. Note that the notch forming device 50 may be configured to form, for example, cut-off notches.

[0027] The corner cut processing device 55 is configured to perform R processing on the right-angled corners of the twin pouch portions 80a by punching, and includes a die 56 and a punch 57 having a punching blade and cooperating with the die 56 to perform corner cut processing. The punch 57 is disposed opposite to the die 56 with the conveyance path of the film material F therebetween, and is driven to move relative to the die 56 so as to approach and separate therefrom. In the present embodiment, it is configured to be able to simultaneously cut four opposing corners of two twin pouch portions 80a adjacent to each other in the length direction of the film material F and two twin pouch portions 80a adjacent to each other in the width direction of the film material F for each of these twin pouch portions 80a.

[0028] The leather cut processing device 60 is configured to cut the film material F in its conveyance direction (length direction) as the film material F is conveyed, and includes, for example, a leather cutting blade 61 disposed at the center position in the width direction of the film material.

[0029] The cutting processing device 65 is configured to perform shear cutting on the film material F in the width direction to divide it into individual twin pouches 80, and includes a fixed blade 66 and a movable blade 67 that is configured to be displaceable so as to approach and separate from the fixed blade 66 and cooperates with the fixed blade 66 to shear the film material F.

[0030] Thus, a sewing means 30 for forming a separation perforation line 90 in a partition seal portion 86 in the twin pouch portion 80a is disposed at a position on the downstream side in the film material conveyance direction of a second cooling means 26b in the second seal portion forming unit 20, and a pressing means 40 for pressing a perforation forming location from both sides in the thickness direction of the film material F is provided adjacent to the sewing means 30. By pressing the perforation forming location in the film material F from both sides in the thickness direction of the film material F with the pressing means 40, it is possible to crush burrs (raised portions) B (see FIG. 8) that are inevitably generated by the perforation process, and it is possible to suppress the height Hb of the burrs B to be small.

[0031] In the present embodiment, the pressing means 40 is configured to function as a cooling means for a sealed location formed by the second seal portion forming unit 20. Therefore, the sewing means 30 is disposed at a position where cooling treatment is performed before and after the perforation process by the sewing means 30.

[0032] The sewing means 30 includes a processing blade 31 that is disposed so as to extend in the film material width direction and is driven so as to be pushed into the film material F to form a separation perforation line 90 that extends along the partition seal portion 86. As shown in FIG. 4, the processing blade 31 is configured in a comb shape such that a plurality of blade portions 32 are arranged side by side in one direction (the width direction of the blade portion). In each of the plurality of blade portions 32 in the present embodiment, as shown in FIGS. 5(a) to 5(c), flat blade surfaces are formed on both sides in the width direction on each of the front and back surfaces of the blade plate 33, and the blade tip edge 36 formed by the front surface side blade surface 34a and the back surface side blade surface 34b that intersect each other has an acute-angled tip portion 35 that intersects at the center in the width direction. When the blade portion 32 has a double-edge shape, the thickness w1 of the blade plate 33 is preferably 0.5 mm or less, and more preferably 0.3 mm or less. Thereby, since the processing blade 31 can easily enter straight into the film material F and the cutting resistance is reduced, it becomes possible to surely cut the film material F without stretching it, and it becomes possible to hardly generate burrs themselves in the perforation processing.

[0033] As shown in FIG. 6(b), the processing blade 31 may have a single-edge shaped blade portion 32 in which flat blade surfaces 34c are formed on both sides in the width direction on one of the front and back surfaces of the blade plate 33, and each of the blade surfaces 34c intersects at the center in the width direction. In this case, the thickness w3 of the blade plate 33 is preferably 0.3 mm or less. Even with such a processing blade 31, the same effects as those of the processing blade 31 having a double-edge shaped blade portion 32 can be obtained.

[0034] As shown in FIG. 7, the crushing means 40 includes a pair of pressing members 41a and 41b for crushing that are arranged to face each other with the conveyance path of the film material F therebetween, and functions as a means for crushing burrs formed on the film material F by pressing the film material F from both sides in the thickness direction and also as a cooling means for the sealing portion formed by the second seal portion forming unit 20.

[0035] One of the pressing members 41a for crushing is constituted by a pressing plate 42 that is long and flat in the width direction of the film material. As the pressing plate 42, it is possible to use the pressing members for cooling that constitute the first cooling means 26a and the second cooling means 26b in the second seal portion forming unit 20, and it has become possible to easily perform the crushing process without using a special device. The pressing member 41b for crushing the other side has a pressing bar 43 made of metal extending in the width direction of the film material on the surface facing the pressing member 41a of the flat pressing plate 42 that is long in the width direction of the film material. The contact surface with respect to the perforation line formation location in the film material F is configured to be narrower than the contact surface of the cooling pressing member with respect to the film material F. Therefore, while ensuring a sufficient cooling function for the sealing location, it is possible to increase the surface pressure and efficiently press the burrs.

[0036] In the bag-making machine 10 as described above, the twin pouch 80 is manufactured as follows. A laminate in which a pair of films are overlapped is used as the film material F. First, the film material F is intermittently conveyed to the bottom seal portion forming portion by the intermittent feeding mechanism 11. In the bottom seal portion forming portion, for each intermittent feeding of the film material F, after a predetermined position in the film material F is heat-sealed by the seal unit 16, the sealed location is cooled by the cooling unit 17, thereby forming the bottom seal portion 84 in the twin pouch 80 (the first seal portion forming step). Next, when the film material F with the bottom seal portion 84 formed is conveyed to the side seal portion forming portion, for each intermittent feeding of the film material F, after a predetermined position in the film material F is stepwise heat-sealed by the seal unit 21, the sealed location is stepwise cooled by the cooling unit 25, thereby forming the partition seal portion 86 and one side seal portion 85a in the twin pouch 80 (the second seal portion forming step). In this second seal portion forming step, a two-stage cooling process by the cooling unit 25 is performed so that the partition seal portion 86 is cooled to a certain extent. In other words, in a state where a higher temperature state than other portions is maintained, a cutting perforation line 90 is formed in the partition seal portion 86 by the perforation processing means 30 (the perforation processing step). Following the perforation processing, the location where the perforation line is formed is pressed from both sides in the film material thickness direction by the crushing processing means 40 (the crushing processing step). At this time, a third-stage cooling process is performed on the partition seal portion 86. In this way, by performing the perforation process with the sealing portion of the partition sealing portion 86 cooled to a certain extent, it becomes difficult for burrs to occur. Also, by performing the crushing process with the sealing portion maintained at a higher temperature state than other portions, it becomes possible to reliably crush the burrs inevitably generated by the perforation process.

[0037] Thereafter, for the film material F in which the twin pouch portion 80a where the two pouch containers 81a and 81b are continuously connected in the filler material conveyance direction is formed, notch forming processing by the notch forming device 50 that forms the notch hole 95a at a predetermined position of the twin pouch portion 80a and corner cutting processing by the corner cutting device 55 that performs R processing on the corners of the twin pouch portion 80a where the notch hole 95a is formed are sequentially performed for each intermittent feed. Then, after the film material F is cut in the conveyance direction of the film material F by the leather cutting device 60, the film material F is cut in the width direction by the cutting device 65, thereby manufacturing the twin pouch 80.

[0038] Thus, according to the above-described bag-making machine 10, it becomes possible to significantly suppress the height of the burrs inevitably generated by the perforation process, so that the twin pouches 80 can be substantially flatly stacked and accumulated during handling. Also, as shown in FIG. 2, even when the processing waste detection device 70 that detects the adhesion of processing waste due to the thickness change of the film material F is incorporated into the production line, as shown in FIG. 8, the presence of the burr B causes a thickness change to be detected by the drive roll 72 and the detection roll 71 provided with a predetermined detection width D therebetween is avoided, and only the thickness change due to the adhesion of the processing waste S can be detected, and the presence or absence of the adhesion of the processing waste S to the twin pouch 80 can be confirmed by the processing waste detection device 70. For this reason, it becomes possible to automate the manufacturing process of the twin pouch 80 consistently, and high productivity can be obtained.

[0039] As described above, although one embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiment, and various design changes can be made without departing from the present invention described in the claims. For example, in the present embodiment, the crushing means is configured to also function as the third-stage cooling means for the sealing portion formed by the second seal portion forming unit. However, the third cooling means may be arranged at a position downstream in the film material conveyance direction with respect to the crushing means to perform a cooling process. Further, it is not necessary that the cooling process for the sealing portion formed by the second seal portion forming unit be performed in three stages, and it can be appropriately changed according to the purpose. Also, the form of each pouch container in the twin pouch is not particularly limited, and it may be a flat pouch, a standing pouch, or any other form. Further, in the above embodiment, a configuration is adopted in which two twin pouches are taken from the film material, but the number (number of pieces) of twin pouch portions arranged in the width direction of the film material is not particularly limited.

[0040] In the multi-connected packaging bag, the number of pouches continuous in the left-right direction is not particularly limited and can be appropriately changed according to the purpose. When the number of pouches constituting the multi-connected packaging bag is large, it may be folded appropriately along the perforation lines for separation and displayed in a suspended state. Also, each pouch may be of the same size as each other, or may be of different sizes from each other.

Example

[0041] Hereinafter, the present invention will be further described by way of examples. However, the following specific examples do not limit the present invention.

[0042] [Example 1] With reference to the configuration shown in FIG. 2, a bag-making machine according to the present invention was manufactured. As the sewing line processing means, as shown in FIGS. 5(a) to 5(c), a processing blade was used in which each of a plurality of blade portions has a double-edge shape and the thickness w1 of the blade plate is 0.5 mm. The blade tip angle α of the blade portion is 40°. When a twin pouch was manufactured by this bag-making machine and the height of burrs inevitably formed by sewing line processing was measured, it was confirmed that the average height of the burrs was about 0.16 mm.

[0043] [Example 2] As the sewing line processing means, as shown in FIG. 6(a), a twin pouch was manufactured in the same manner as in Example 1 except that a processing blade was used in which each of a plurality of blade portions has a double-edge shape and the thickness w2 of the blade plate is 0.3 mm. When the height of burrs inevitably formed by sewing line processing was measured, it was confirmed that the average height of the burrs was about 0.07 mm.

[0044] [Example 3] As the sewing line processing means, as shown in FIG. 6(b), a twin pouch was manufactured in the same manner as in Example 1 except that a processing blade was used in which each of a plurality of blade portions has a single-edge shape and the thickness w3 of the blade plate is 0.3 mm. When the height of burrs inevitably formed by sewing line processing was measured, it was confirmed that the average height of the burrs was about 0.10 mm.

[0045] [Example 4] As the sewing line processing means, as shown in FIG. 6(c), a twin pouch was manufactured in the same manner as in Example 1 except that a processing blade was used in which each of a plurality of blade portions has a single-edge shape and the thickness w4 of the blade plate is 0.5 mm. When the height of burrs inevitably formed by sewing line processing was measured, it was confirmed that the average height of the burrs was about 0.24 mm.

Explanation of Signs

[0046] 10 ··· Bag-making machine 11 ··· Intermittent feeding mechanism 15 ··· First seal portion forming unit 16 ··· Seal unit 17 ··· Cooling unit 20 ··· Second seal part forming unit 21 ··· Sealing unit 22 ··· Pressing means for heating 25 ··· Cooling unit 26a ··· First cooling means 26b ··· Second cooling means 30 ··· Perforation processing means 31 ··· Processing blade 32 ··· Blade part 33 ··· Blade plate 34a ··· Blade surface on the front side 34b ··· Blade surface on the back side 34c ··· Blade surface 35 ··· Acute-angled tip part 36 ··· Blade edge 40 ··· Crushing processing means 41a ··· Pressing member for crushing processing 41b ··· Pressing member for crushing processing 42 ··· Pressing plate 43 ··· Pressing bar 50 ··· Notch forming device 51 ··· Die 52 ··· Punch 55 ··· Corner cutting processing device 56 ··· Die 57 ··· Punch 60 ··· Leather cutting processing device 61 ··· Shaving blade 65 ··· Cutting processing device 66 ··· Fixed blade 67 ··· Movable blade 70 ··· Processing chip detection device 71 ··· Detection roll 72 ··· Driving roll 80 ··· Twin pouch 80a ··· Twin pouch part 81a ··· Pouch container 81b ··· Pouch container 82 ··· Accommodating portion 83 ··· Peripheral seal portion 84 ··· Bottom seal portion 85a ··· One side seal portion 85b ··· The other side seal portion 86 ··· Partition seal portion 90 ··· Score line for separation 95 ··· Notch 95a ··· Hole for notch B ··· Burr F ··· Film material S ··· Processed chips

Claims

1. A bag-making machine for manufacturing a multi-connected packaging bag having a partition seal portion that separates adjacent pouch containers from each other and configured to be separable into individual pouch containers by providing a perforation line on the partition seal portion, comprising a first seal portion forming unit that forms a bottom seal portion of each pouch container in the multi-connected packaging bag for a film material conveyed intermittently, and a second seal portion forming unit that forms a partition seal portion and a side seal portion of each pouch container in the multi-connected packaging bag, and a perforation processing means that forms a perforation line on the partition seal portion, wherein a crushing processing means that presses the perforation forming location on the film material from both sides in the thickness direction of the film material is provided adjacent to the perforation processing means, the second seal portion forming unit includes a seal unit that heat-seals the film material and a cooling unit that cools the sealed location of the film material, the cooling unit includes a plurality of cooling means arranged in the film material conveyance direction, the perforation processing means is arranged at a position where cooling treatment is performed before and after the perforation processing by the perforation processing means, each of the plurality of cooling means includes a cooling pressing member that cools while pressing the film material from both sides in the thickness direction, the crushing processing means includes a pair of crushing pressing members facing each other across the film material conveyance path, and at least one of the crushing pressing members is configured such that a contact surface with respect to the perforation line forming location on the film material is narrower than a contact surface with respect to the film material of the cooling pressing member. The bag-making machine is characterized by this.

2. The bag-making machine according to claim 1, wherein the crushing processing means is configured to function as a cooling means for a sealed location formed by the second seal portion forming unit.

3. The perforation processing means includes a comb-shaped processing blade in which a plurality of blade portions are arranged side by side in one direction, each of the plurality of blade portions has flat blade surfaces formed on both sides in the one direction on each of the front and back surfaces of the blade plate, and a double-edge shape having an acute-angled tip portion where the blade edges formed by the front surface side blade surface and the back surface side blade surface intersect each other at the center in the one direction. The bag-making machine according to claim 1 or claim 2 is characterized by this.

4. The bag-making machine according to claim 3, wherein the thickness of the blade plate is 0.5 mm or less.

5. The perforating means includes a comb-shaped processing blade in which a plurality of blade portions are arranged side by side in one direction, each of the plurality of blade portions has flat blade surfaces formed on both sides of one of the front and back surfaces of the blade plate in the one direction, and each of the blade surfaces has a single-edge shape that intersects at the central portion in the one direction, The bag-making machine according to claim 1 or claim 2, wherein the thickness of the blade plate is 0.3 mm or less.

6. A method for manufacturing a multi-connected packaging bag configured to be separable into individual pouch containers by providing a perforation line for separation in a partition seal portion that separates adjacent pouch containers from each other, a first seal portion forming step of forming a bottom seal portion of each pouch container in the multi-connected packaging bag on a film material conveyed intermittently, a second seal portion forming step of forming a partition seal portion and side seal portions of each pouch container in the multi-connected packaging bag on the film material, a perforating step of forming a perforation line for separation in the partition seal portion, a crushing step of pressing the perforation forming portion formed in the perforating step from both sides in the thickness direction of the film material by a pair of pressing members for crushing, comprising, the second seal portion forming step includes a sealing step of heat-sealing the film material and a cooling step of gradually cooling the sealing portion formed in the sealing step, the perforating step and the crushing step are performed during the cooling step, in the crushing step, while cooling, the perforation line forming portion formed in the perforating step is pressed from both sides of the film material by a cooling pressing member, A method for manufacturing a multi-connected packaging bag, characterized in that at least one of the pressing members for crushing is configured such that the contact surface of the film material with respect to the perforation line forming portion is narrower than the contact surface of the cooling pressing member with respect to the film material.

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