JP7711526B2 - Bag making machine and method for manufacturing multiple packaging bags - Google Patents

Description

The present invention relates to a bag making machine and manufacturing method that produces multiple packaging bags that have partition seals that separate adjacent pouch containers from each other and are configured so that they can be separated into individual pouch containers by providing separation perforations in the partition seals.

Currently, in pouch packaging, in which a film is heat-sealed to form a pouch into a bag shape as a packaging container, a packaging form is known in which a number of pouch containers are connected in series to form a multiple packaging bag (multiple-packaged pouches) and packed together in a presentation box or the like (see, for example, Patent Document 1). Such multiple packaging bags are configured so that they can be separated into individual pouch containers by, for example, providing a separation perforation line between adjacent pouch containers.

This type of multiple packaging bag can be manufactured in-line by carrying out each process such as a seal portion forming process in which a peripheral seal portion and a partition seal portion that separates adjacent pouch containers from each other are formed by heat-sealing a predetermined area of an intermittently conveyed film material, a perforation processing process in which a separation perforation line is formed in the partition seal portion, a notch forming processing process in which a notch for opening is formed in each pouch container, a corner cutting processing process in which, for example, R processing is performed on the four corners of each pouch container, and a cutting processing process in which the multiple packaging bag is cut out along the outer peripheral contour. The seal portion forming process usually includes a cooling process in which the seal formation portion is cooled, and the perforation processing is performed on the partition seal portion that has been sufficiently cooled.

In perforation, for example, a comb-shaped cutting blade with a single-edged or double-edged blade is moved up and down by an appropriate drive device to form a separation perforation line in which cut sections and non-cut sections are arranged alternately (see, for example, Patent Document 2). Here, the length of the cut sections or the length of the non-cut sections is adjusted by the amount of depression of the cutting blade.

JP 2004-250041 A JP 2000-255591 A

In this type of perforation, the back side of the film material is stretched by pressing in the processing blade, which inevitably results in the formation of burrs in the film material.
However, the reality is that it is difficult to prevent the occurrence of "burrs" caused by perforation processing.

Furthermore, when the multiple-piece packaging bags cut out in the cutting process are handled and stacked, the presence of "burrs" makes it impossible to stack the multiple-piece packaging bags evenly, resulting in stacking failure.
Furthermore, the presence or absence of processing waste on the multiple-unit packaging bag can be detected, for example, by detecting a change in the thickness of the multiple-unit packaging bag, but the presence of processing waste may be determined based on the presence of "burrs." For this reason, the presence or absence of processing waste on the multiple-unit packaging bag must be confirmed by an operator, which causes a decrease in productivity of the multiple-unit packaging bag.
In this way, the presence of burrs caused by perforation processing is an obstacle to improving the processing speed of bag making machines and is an obstacle to automating production lines.

The present invention was made based on the above circumstances, and aims to provide a bag making machine and a method for manufacturing multiple-unit packaging bags that can reduce the height of burrs caused by perforation processing, enable the entire manufacturing process of multiple-unit packaging bags to be automated, and achieve high productivity.

The bag making machine of the present invention is a bag making machine for manufacturing a multiple-piece packaging bag having a partition seal portion that partitions adjacent pouch containers from one another, and configured to be separated into individual pouch containers by providing a separation perforation line in the partition seal portion, and is equipped with a first seal portion forming unit that forms bottom seal portions of individual pouch containers in the multiple-piece packaging bag on an intermittently conveyed film material, a second seal portion forming unit that forms partition seal portions in the multiple-piece packaging bag and side seal portions of individual pouch containers, and a perforation processing means that forms a separation perforation line in the partition seal portion, and a crushing processing means that presses the perforation formation portion of the film material from both sides in the thickness direction of the film material is provided adjacent to the perforation processing means , and the second seal portion forming unit presses the film material against the film material. The above problem is solved by providing a sealing unit which heat-seals a film material and a cooling unit which cools the sealed portion of the film material, the cooling unit having a plurality of cooling means arranged in the film material transport direction, the perforation processing means being arranged in a position such that a cooling process is performed before and after perforation processing by the perforation processing means, each of the plurality of cooling means having a cooling press member which cools the film material while pressing it from both sides in the thickness direction, the crushing processing means having a pair of crushing press members facing each other across the transport path of the film material, and at least one of the crushing press members being configured so that the contact surface against the perforation line formation portion of the film material is narrower than the contact surface of the cooling press member against the film material ,

The method for producing a multiple-piece packaging bag of the present invention is a method for producing a multiple-piece packaging bag having partition seal parts that partition adjacent pouch containers from one another, and configured to be separated into individual pouch containers by providing separation perforations on the partition seal parts, the method including a first seal part forming step of forming bottom seal parts of individual pouch containers in the multiple-piece packaging bag on an intermittently conveyed film material, a second seal part forming step of forming partition seal parts in the multiple-piece packaging bag and side seal parts of each pouch container on the film material, a perforation step of forming separation perforations on the partition seal parts, and a pair of crushing pressing members pressing the perforations formed in the perforation step in the thickness direction of the film material. The second seal portion forming process includes a sealing process of heat-sealing the film material and a cooling process of gradually cooling the sealed area formed in the sealing process, and the perforation process and the crushing process are carried out during the cooling process, and in the crushing process, the perforation line formation area formed in the perforation process is cooled while being pressed from both sides of the film material by a cooling press member, and the above problem is solved by using as at least one of the crushing press members a press member configured so that the contact surface of the film material with the perforation line formation area is narrower than the contact surface of the cooling press member with the film material .

According to the invention of claim 1 and claim 6 , the pressing means presses the perforation formation portion of the film material from both sides in the thickness direction of the film material, so that the burrs (protruding portions) that inevitably occur due to the perforation processing can be crushed and the height of the burrs can be suppressed. Therefore, when handling the multiple-piece packaging bag, the multiple-piece packaging bag can be stacked substantially flat, and the presence or absence of processing waste on the multiple-piece packaging bag can be confirmed by an appropriate processing waste detection device. Therefore, it is possible to consistently automate the manufacturing process of the multiple-piece packaging bag, and high productivity can be obtained.

In addition, by performing the perforation process when the sealed areas that make up the partition seal portion are cooled to a certain extent, burrs are less likely to occur, and by performing the crushing process when the sealed areas are maintained at a higher temperature than other parts, burrs generated by the perforation process can be reliably crushed.

According to the invention as defined in claim 2 , the crushing process can be easily carried out by utilizing existing cooling means for pressing the film material from both sides in the thickness direction, without using any special equipment.
Furthermore, it is possible to increase the surface pressure and efficiently press the burrs while ensuring a sufficient cooling function for the sealed portion.

According to the invention of claim 3 and claim 5 , the processing blade of the perforation means has a double-edged blade portion, or the processing blade has a single-edged blade portion with a thin blade plate, so that the processing blade can easily penetrate straight into the film material and the cutting resistance is small. This makes it possible to reliably cut the film material without stretching it, and makes it possible to reduce the occurrence of burrs during perforation processing.
According to the invention of claim 4 , the processing blade has a double-edged blade portion with a small blade plate thickness, so that the above-mentioned effect can be obtained more reliably, and the height of the burr in the resulting multi-piece packaging bag can be kept extremely small.

1 is a plan view showing a schematic configuration of an example of a multiple-piece packaging bag manufactured by the bag making machine of the present invention. 1 is a schematic side view showing an outline of the configuration of an example of a bag making machine of the present invention. 1A to 1C are schematic diagrams for explaining a manufacturing process of a multiple packing bag. 1 is a front view seen from the film material transport direction, illustrating a schematic configuration of an example of a processing blade in a perforation processing means. FIG. 5A is a diagram showing the configuration of the area surrounded by the two-dot chain line in FIG. 4, in which (a) is a front view of a blade portion, (b) is a side view of the blade portion, and (c) is a cross-sectional view taken along line AA. FIG. 1A to 1C are cross-sectional views showing the configuration of the blade portion in other examples of cutting blades used in perforation processing, in which (a) the cutting blade used in Example 2, (b) the cutting blade used in Example 3, and (c) the cutting blade used in Example 4 are shown. FIG. 2 is a perspective view showing a schematic configuration of an example of a crushing means. FIG. 2 is a schematic diagram illustrating a configuration of an example of a machining chip detection device.

Below, an embodiment of the present invention will be described with reference to the drawings. First, the multiple packaging bags manufactured by the bag making machine of the present invention will be described using as an example a multiple packaging bag having two pouch containers connected in the left-right direction (hereinafter referred to as a "twin pouch").

[Multiple packaging bags]
As shown in FIG. 1 , the twin pouch 80 is formed into a bag shape by heat-sealing three sides of a pair of overlapping films to form a peripheral seal portion 83, and by forming a partition seal portion 86 extending in the vertical direction at the center in the horizontal direction, the area surrounded by the peripheral seal portion 83 is partitioned into two storage portions 82, 82, and two independent pouch containers 81a, 81b of the same size are connected in the horizontal direction.
A planned opening position for each pouch container 81a, 81b is set on the upper end side of the portion of the peripheral seal portion 83 that constitutes one of the side seal portions 85a of each pouch container 81a, 81b, and a notch 95 is provided by cutting the outer edge of the peripheral seal portion 83 at the planned opening position.

The partition seal portion 86 is formed so as to be continuous with the bottom seal portion 84 of 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 individual pouch containers 81a, 81b, the other side seal portion 85b has a shape symmetrical to the one side seal portion 85a in which the notch 95 is provided.

The partition seal portion 86 is formed with a separation perforation line 90 that is made up of alternating cut portions and non-cut portions.
A separation perforation line 90 is cut into the upper edge of the twin pouch 80 and extends along the compartment seal portion 86, allowing the pouch containers 81a, 81b to be easily separated.
The separation perforation line 90 is set in a state that does not reach the lower end edge of the twin pouch 80, so that even if the twin pouch 80 is accidentally dropped from its lower end side, the separation perforation line 90 can be used as a trigger to prevent the pouch from breaking from the lower end side.

The film that constitutes the twin pouch 80 is, for example, a laminated film having a structure in which, from the inside, a polypropylene layer having a thickness of 50 to 100 μm, an aluminum layer having a thickness of 5 to 15 μm, a nylon layer having a thickness of 10 to 30 μm, and a polyethylene terephthalate layer having a thickness of 10 to 30 μm are laminated in this order, which are arranged facing each other during bag making.

Next, we will explain the bag making machine that produces the twin pouch 80 described above.

[Bag making machine]
As shown in Figure 2, a bag making machine 10 according to one embodiment of the present invention is equipped with an intermittent feed mechanism 11 that intermittently transports a strip of resin film material F horizontally while alternately repeating transport and stopping, and a first seal portion forming unit 15, a second seal portion forming unit 20, a notch forming device 50, a corner cutting device 55, a laser cutting device 60 and a cutting device 65 are arranged in order from the upstream side in the film material transport direction along the fill material transport path.
In this embodiment, as shown in FIG. 3, in order to improve manufacturing efficiency, twin pouches 80 are manufactured two at a time (two-pouch production) along the film material transport direction, and in the film material F, two twin pouch portions 80a, 80a are formed side by side in the film material width direction with their opening ends facing each other and their bottoms positioned on the side edge sides of the film material F.

The film material F is, for example, a laminate in which a front film and a back film are overlapped, and when the pouch containers 81a, 81b in the twin pouch 10 are configured as standing type pouches having a bottom, the bottom film is sandwiched between the front film and the back film in a folded state.

The first seal portion forming unit 15 forms the bottom seal portion 84 of each pouch container 81a, 81b in the twin pouch 80 using the intermittently transported film material F, and is equipped with a sealing unit 16 that heat-seals predetermined locations of the film material F, and a cooling unit 17 that cools the formed sealed locations.
The sealing unit 16 is disposed to extend in the film material transport direction and is configured to heat and press the film material F from both sides in the thickness direction.
The cooling unit 17 is disposed to extend in the film material transport direction and is configured to cool the sealed portion of the film material F while pressing the sealed portion from both sides in the thickness direction.

The second seal portion forming unit 20 forms the partition seal portion 86 in the twin pouch 80 and one of the side seal portions 85a of each pouch container 81a, 81b on the intermittently transported film material F, and is equipped with a sealing unit 21 that heat-seals predetermined locations of the film material F, and a cooling unit 25 that cools the formed sealed locations.
The sealing unit 21 is arranged to extend in the width direction of the film material, 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 transport direction, and are configured to be able to heat and press in stages at predetermined locations where the partition seal portion 86 and one of the side seal portions 85a of each pouch container 81a, 81b are to be formed for each intermittent feed.
In the cooling unit 25, a first cooling means 26a and a second cooling means 26b each equipped with a cooling press member arranged to extend in the width direction of the film material and to cool the sealed portions of the film material F while pressing them from both sides in the thickness direction, are arranged side by side in the film material conveying direction, and the cooling press member is configured to be able to gradually cool the sealed portions constituting the partition seal portion 86 and one side seal portion 85a of each pouch container 81a, 81b for each intermittent feed. The cooling press member is configured, for example, of a flat metal plate that is long in the width direction of the film material.

3, the notch forming device 50 is configured to punch notch holes 95a in opposing side seal portions of each of two twin pouch portions 80a adjacent in the longitudinal direction of the film material F by punching, and includes a die 51 and a punch 52 having a punching blade and punching the notch holes 95a in cooperation with the die 51. The punch 52 is disposed opposite the die 51 across the conveyance path of the film material F, and is driven to move toward and away from the die 51 relatively.
It should be noted that the notch forming device 50 may be configured to form, for example, a score notch.

The corner cutting device 55 is used to round the right-angled corners of the twin pouch portion 80a by punching them, and includes a die 56 and a punch 57 equipped with a punching blade and performing corner cutting in cooperation with the die 56. The punch 57 is disposed opposite the die 56 across the conveyance path of the film material F, and is driven to move toward and away from the die 56. In this embodiment, the device is configured to be able to simultaneously cut four opposing corners of two twin pouch portions 80a adjacent in the length direction of the film material F, and two twin pouch portions 80a adjacent in the width direction of the film material F to each of these twin pouch portions 80a.

The razor cutting device 60 is configured to cut the film material F in the conveying direction (length direction) as the film material F is conveyed, and is equipped with a razor blade 61 positioned, for example, at the center position in the width direction of the film material.

The cutting device 65 is configured to shear the film material F in the width direction to separate it into individual twin pouches 80, and is equipped with a fixed blade 66 and a movable blade 67 that is movable toward and away from the fixed blade 66 and cooperates with the fixed blade 66 to shear the film material F.

Thus, the perforation processing means 30 that forms a separation perforation line 90 in the partition seal portion 86 in the twin pouch portion 80a is disposed downstream in the film material conveying direction of the second cooling means 26b in the second seal portion forming unit 20, and the crushing processing means 40 that presses the perforation formation portion from both sides in the thickness direction of the film material F is provided adjacent to the perforation processing means 30. By pressing the perforation formation portion in the film material F from both sides in the thickness direction of the film material F with the crushing processing means 40, it is possible to crush the burrs (raised portions) B (see FIG. 8) that inevitably occur due to the perforation processing, and it is possible to suppress the height Hb of the burrs B to a small value.

In this embodiment, the crushing means 40 is configured to function as a cooling means for the seal portion formed by the second seal portion forming unit 20, and therefore the perforation means 30 is positioned so that a cooling process is performed before and after perforation by the perforation means 30.

The perforation processing means 30 is provided with a processing blade 31 that is arranged to extend in the width direction of the film material and is driven to be pressed 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 with a plurality of blade portions 32 arranged side by side in one direction (the width direction of the blade portions).
5(a) to 5(c), each of the blade portions 32 in this embodiment has a double-edged shape in which flat blade surfaces are formed on both sides in the width direction on the front and back sides of the blade plate 33, and cutting edges 36 formed by the blade surface 34a on the front side and the blade surface 34b on the back side intersecting with each other have an acute pointed end 35 that intersects with each other at the center in the width direction. When the blade portion 32 has a double-edged shape, the thickness w1 of the blade plate 33 is preferably 0.5 mm or less, and more preferably 0.3 mm or less. This makes it easier for the processing blade 31 to enter the film material F straight and reduces the cutting resistance, making it possible to reliably cut the film material F without stretching it, and making it less likely to produce burrs during perforation processing.

As shown in FIG. 6(b), the processing blade 31 may have flat blade surfaces 34c 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 may have a single-edged blade portion 32 that intersects with each other at the center in the width direction, and in this case, it is preferable that the thickness w3 of the blade plate 33 is 0.3 mm or less. Even with such a processing blade 31, it is possible to obtain the same effect as a processing blade 31 having a double-edged blade portion 32.

As shown in FIG. 7, the crushing means 40 includes a pair of crushing pressing members 41a, 41b arranged opposite each other across the transport path of the film material F, and is configured to crush burrs formed on the film material F by pressing the film material F from both sides in the thickness direction, and also function as a cooling means for the sealed area formed by the second seal portion forming unit 20.

One of the crushing press members 41a is composed of a flat press plate 42 that is long in the width direction of the film material. As the press plate 42, it is possible to use the cooling press members that constitute the first cooling means 26a and the second cooling means 26b in the second seal portion forming unit 20, so that the crushing process can be easily performed without using any special equipment.
The other crushing press member 41b has a metal press bar 43 extending in the width direction of the film material on the surface of a flat press plate 42 that is long in the width direction of the film material, the surface facing the crushing press member 41a, and is configured so that the contact surface against the portion of the film material F where the perforation line is formed is narrower than the contact surface of the cooling press member against the film material F. This makes it possible to increase the surface pressure and efficiently press the burrs while ensuring a sufficient cooling function for the sealed portion.

In the bag making machine 10 as described above, the twin pouch 80 is manufactured as follows.
A laminate formed by overlapping a pair of films is film material F, and first, the film material F is intermittently transported to a bottom seal portion forming section by an intermittent feed mechanism 11. In the bottom seal portion forming section, each time the film material F is intermittently fed, a predetermined position on the film material F is heat sealed by a sealing unit 16, and then the sealed location is cooled by a cooling unit 17, thereby forming a bottom seal portion 84 in a twin pouch 80 (first seal portion forming step).
Next, when the film material F on which the bottom seal portion 84 has been formed is transported to the side seal portion forming portion, each time the film material F is intermittently fed, predetermined positions on the film material F are gradually heat-sealed by the sealing unit 21, and then the sealed locations are gradually cooled by the cooling unit 25, thereby forming the partition seal portion 86 and one of the side seal portions 85a in the twin pouch 80 (second seal portion forming process).
In this second seal portion forming process, the partition seal portion 86 is cooled to a certain degree by the two-stage cooling process by the cooling unit 25, in other words, is maintained at a higher temperature than other portions, and then the perforation means 30 forms a separation perforation line 90 in the partition seal portion 86 (perforation process), and following the perforation process, the crushing means 40 presses the perforation line formation location from both sides in the thickness direction of the film material (crushing process). At this time, the partition seal portion 86 is subjected to a third stage cooling process.
In this way, by performing the perforation process while the sealed areas that make up the partition seal portion 86 are cooled to a certain extent, burrs are less likely to occur, and by performing the crushing process while the sealed areas are maintained at a higher temperature than other areas, burrs that inevitably occur during the perforation process can be reliably crushed.

Thereafter, for the film material F having the twin pouch portion 80a formed thereon, in which the two pouch containers 81a, 81b are continuously connected in the fill material conveying direction, notch forming processing is performed by a notch forming device 50 which forms notch holes 95a at predetermined positions in the twin pouch portion 80a, and corner cutting processing is performed by a corner cutting device 55 which rounds the corners of the twin pouch portion 80a in which the notch holes 95a are formed, in sequence for each intermittent feed.
Then, the film material F is cut in the feed direction of the film material F by the laser cutting processing device 60, and then the film material F is cut in the width direction by the cutting processing device 65, thereby producing the twin pouch 80.

The bag making machine 10 described above can reduce the height of burrs that inevitably occur due to perforation, so that the twin pouches 80 can be stacked and piled up substantially flat when handled. Even if a processing debris detector 70 that detects the adhesion of processing debris by changes in thickness of the film material F is incorporated into the production line as shown in FIG. 2, the detection roll 71, which is provided with a predetermined detection width D between the driving roll 72 and the detection roll 71 as shown in FIG. 8, prevents the thickness change due to the presence of burrs B from being detected, and only the thickness change due to the adhesion of processing debris S can be detected, so that the processing debris detector 70 can check whether processing debris S has adhered to the twin pouch 80. This makes it possible to consistently automate the manufacturing process of the twin pouch 80, and achieve high productivity.

Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various design modifications can be made without departing from the present invention described in the claims.
For example, in this embodiment, the crushing means is configured to function as a third stage cooling means for the sealed area formed by the second seal portion forming unit, but the third cooling means may be arranged at a position downstream of the crushing means in the film material conveying direction to perform the cooling process. Also, it is not necessary to configure the cooling process for the sealed area formed by the second seal portion forming unit to be performed in three stages, and it can be appropriately changed depending on the purpose.
The shape of each pouch container in the twin pouch is not particularly limited, and may be a flat pouch, a standing pouch, or any other shape. In the above embodiment, two twin pouches are cut from the film material, but the number of twin pouches arranged in the width direction of the film material (number of pouches) is not particularly limited.

In the multiple packaging bag, the number of pouches connected in the left-right direction is not particularly limited and can be changed appropriately according to the purpose. When the number of pouches constituting the multiple packaging bag is large, the multiple packaging bag may be displayed or exhibited in a hanging state by folding the pouches appropriately along the separation perforation lines.
Additionally, the individual pouches may be of the same size or may be of different sizes.

The present invention will be further explained below with reference to examples, but the following specific examples are not intended to limit the present invention.

[Example 1]
A bag making machine according to the present invention was manufactured with reference to the configuration shown in FIG.
As shown in Figures 5(a) to 5(c), a processing blade was used as the perforation means, in which each of the multiple blade portions had a double-edged shape and the blade plate had a thickness w1 of 0.5 mm. The cutting edge angle α of the blade portion was 40°.
When twin pouches were manufactured using this bag making machine and the height of burrs that are inevitably formed during perforation processing was measured, it was confirmed that the average height of the burrs was about 0.16 mm.

[Example 2]
A twin pouch was manufactured in the same manner as in Example 1, except that as shown in FIG. 6(a), a processing blade was used in which each of the multiple blade portions had a double-edged shape and the blade plate had a thickness w2 of 0.3 mm. When the height of the burrs that were inevitably formed by the perforation processing was measured, it was confirmed that the average height of the burrs was about 0.07 mm.

[Example 3]
A twin pouch was manufactured in the same manner as in Example 1, except that as shown in FIG. 6(b), a processing blade was used as the perforation processing means, in which each of the multiple blade portions had a single-edged shape and the blade plate had a thickness w3 of 0.3 mm. When the height of the burrs that were inevitably formed by the perforation processing was measured, it was confirmed that the average burr height was about 0.10 mm.

[Example 4]
A twin pouch was manufactured in the same manner as in Example 1, except that as shown in Figure 6 (c), a processing blade was used as the perforation processing means, in which each of the multiple blade portions had a single-edged shape and the blade plate had a thickness w4 of 0.5 mm.When the height of the burrs that were inevitably formed by the perforation processing was measured, it was confirmed that the average burr height was about 0.24 mm.

LIST OF SYMBOLS 10 bag making machine 11 intermittent feed mechanism 15 first seal portion forming unit 16 sealing unit 17 cooling unit 20 second seal portion forming unit 21 sealing unit 22 heating press means 25 cooling unit 26a first cooling means 26b second cooling means 30 perforation means 31 processing blade 32 blade portion 33 blade plate 34a front blade surface 34b back blade surface 34c blade surface 35 acute pointed tip 36 blade edge 40 crushing means 41a crushing press member 41b crushing press member 42 press plate 43 Description of the Drawings Pressing bar 50 Notch forming device 51 Die 52 Punch 55 Corner cut processing device 56 Die 57 Punch 60 Razor cut processing device 61 Razor blade 65 Cutting processing device 66 Fixed blade 67 Movable blade 70 Processing waste detection device 71 Detection roll 72 Drive roll 80 Twin pouch 80a Twin pouch portion 81a Pouch container 81b Pouch container 82 Storage section 83 Peripheral seal section 84 Bottom seal section 85a One side seal section 85b Other side seal section 86 Partition seal section 90 Separation perforation line 95 Notch 95a: Hole for notch B: Burr F: Film material S: Processing waste

Claims (6)

A bag making machine for producing a multiple-piece packaging bag having a partition seal portion that partitions adjacent pouch containers from each other, and configured to be separated into individual pouch containers by providing a separation perforation line on the partition seal portion,
The method includes a first seal forming unit for forming a bottom seal portion of each pouch container in the multiple packaging bag on the intermittently conveyed film material, a second seal forming unit for forming a partition seal portion in the multiple packaging bag and a side seal portion of each pouch container, and a perforation processing means for forming a separation perforation line in the partition seal portion,
A crushing means for pressing the perforation formation portion of 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 that heat-seals the film material and a cooling unit that cools the sealed portion of the film material;
The cooling unit includes a plurality of cooling means arranged in a film material transport direction,
The perforation means is disposed at a position where a cooling process is performed before and after the perforation process by the perforation means,
each of the plurality of cooling means includes a cooling pressing member that presses and cools the film material from both sides in a thickness direction;
The crushing means is provided with a pair of crushing pressure members facing each other across the transport path for the film material, and at least one of the crushing pressure members is configured so that its contact surface against the location where a perforation line is formed in the film material is narrower than the contact surface of the cooling pressure member against the film material . 2. The bag making machine according to claim 1, wherein the crushing means is configured to function as a cooling means for the sealed portion formed by the second seal portion forming unit . The perforation means includes a comb-shaped processing blade having a plurality of blade portions arranged in one direction,
3. The bag making machine according to claim 1 or 2, wherein each of the plurality of blade portions has a double-edged shape in which flat blade surfaces are formed on both sides in the one direction on each of the front and back surfaces of a blade plate, and cutting edges formed by the blade surface on the front side and the blade surface on the back side that intersect with each other have acute pointed ends that intersect with each other at a center in the one direction . 4. The bag making machine according to claim 3 , wherein the blade plate has a thickness of 0.5 mm or less . The perforation means includes a comb-shaped processing blade having a plurality of blade portions arranged in one direction,
each of the plurality of blade portions has a single-edged shape in which flat blade surfaces are formed on both sides in the one direction on one of a front surface and a back surface of a blade plate, and the blade surfaces intersect with each other at a center portion in the one direction,
3. The bag making machine according to claim 1 , wherein the blade plate has a thickness of 0.3 mm or less . A method for producing a multiple-piece packaging bag having a partition seal portion that partitions adjacent pouch containers from each other, and configured to be separated into individual pouch containers by providing a separation perforation line on the partition seal portion, comprising:
a first seal portion forming step of forming bottom seal portions of individual pouch containers in the multiple packaging bag on the intermittently conveyed film material;
a second seal portion forming step of forming partition seal portions in the multiple packaging bag and side seal portions of each pouch container on the film material;
A perforation processing step of forming a separation perforation line in the partition seal portion;
a crushing process in which the perforation formation portion formed in the perforation process is pressed from both sides in the thickness direction of the film material by a pair of crushing pressing members;
Including,
The second seal portion forming step includes a sealing step of heat-sealing the film material, and a cooling step of gradually cooling the sealed portion formed in the sealing step,
The perforation process and the crushing process are performed during the cooling process,
In the crushing process, the perforation line formation portion formed in the perforation process is cooled while being pressed from both sides of the film material by a cooling press member,
A method for manufacturing a multi-piece packaging bag, characterized in that at least one of the crushing press members is configured so that the contact surface against the perforation line formation location in the film material is narrower than the contact surface of the cooling press member against the film material.