JP2020175914A - Multiple-row vertical filling packing machine and multiple-row filling packing method - Google Patents

Abstract

To provide a multiple-row vertical filling packing machine and a multiple-row filling packing method capable of suppressing generation of vertical wrinkles in a lateral seal part and simultaneously manufacturing multiple-rows of packages high in packed article capacity efficiency.SOLUTION: The multiple-row vertical filling packing machine comprises: a pair of vertical seal rolls forming one continuous wide cylindrical body by continuously and vertically sealing both ends of a plastic film; a pair of boundary vertical seal rolls forming a boundary vertical seal part by continuously heat-sealing one or more width-direction positions of the wide cylindrical body in a longitudinal direction with an unsealed part left in the width-direction center; a pair of cut rolls cutting the unsealed part of the boundary vertical seal part in the longitudinal direction and dividing it into a plurality of parallel narrow cylinder rows so as to be made independent; and a pair of lateral seal rolls continuously manufacturing packages by laterally sealing the respective narrow cylinder rows at prescribed intervals in the longitudinal direction while filling a packed article.SELECTED DRAWING: Figure 1

Description

The present invention relates to a filling and packaging machine and a filling and packaging method for producing a package by making a bag of a long plastic film and filling and packaging an object to be packaged in liquid, viscous, powdery or granular form. The present invention relates to a multi-row vertical filling / packaging machine and a multi-row filling / packaging method capable of continuously manufacturing a plurality of packages in parallel at the same time.

Conventionally, a package made of liquid matter such as food and drink, seasoning liquid, pharmaceuticals, chemicals, etc., a viscous substance, or a powder / granular substance is molded into a bag shape of a soft plastic film and simultaneously in parallel in multiple rows. As a packaging machine for multi-row filling that can be filled and packaged, there is one as described in Cited Document 1.

In this known multi-row filling and packaging machine, one wide plastic film is cut into four or more rows, and then the multiple rows are made independent by using a narrow plastic film independent of each row. By making bags in the state and filling the objects to be packaged independently, the four-sided seal type packaging bags are configured to be manufactured in multiple rows.

Japanese Unexamined Patent Publication No. 2015-217944

In the multi-row filling and packaging machine described in Patent Document 1, each of a plurality of rows of independent narrow-width plastic films is folded in two at the center position in the width direction, and then a vertical seal is performed on the overlapping edge portions. There is. However, such a filling and packaging machine has a problem that it is very difficult to guide a narrow plastic film so that the edge portions overlap each other accurately and to fold it back, and a sealing defect is likely to occur.

Therefore, one wide plastic film is folded in two to form a vertical seal portion in a plurality of rows, and each of the tubular portions in which the tubular portions in a plurality of rows are connected horizontally and remain integrated is provided with each tubular portion. After filling the packaged object and horizontal sealing, it is separated into individual packages. In this case, since the horizontally connected tubular bodies are simultaneously sandwiched by a pair of horizontal seal rolls to perform horizontal sealing, the multiple rows of tubular parts each swell with the object to be packaged. In addition to the fatal defect that the entire packaging plastic film cannot spread in the width direction and a relatively large amount of filling cannot be secured, the packaged object may be caught in the horizontal seal portion. There are problems that vertical wrinkles are easily formed, the sealing strength is insufficient, and the packaged object leaks or the bag is broken.

Further, the conventional multi-row filling and packaging machine has a feature that a plurality of packages can be manufactured at the same time, so that the packages can be manufactured with high production efficiency. However, most of the packages manufactured by the conventional multi-row filling and packaging machine are four-way seal type packages in which four sides are surrounded by a vertical seal portion and a horizontal seal portion. Therefore, a large amount of film is required as compared with a three-way seal type package having a folded portion (non-seal portion) on one side, and a seal portion provided on four sides (seal width: about 5 to 20 mm). Since the swelling (degree of freedom) in the thickness direction is restricted by this, there is a drawback that the capacity efficiency of the packaged object (filling amount of the packaged object / outer size of the packaging bag) is low.

Therefore, in the present invention, a multi-row vertical filling and packaging machine capable of suppressing the occurrence of vertical wrinkles on the horizontal seal portion and simultaneously producing a package having high capacity efficiency of the object to be packaged in a plurality of rows. And to provide a multi-row filling and packaging method.

In order to achieve the above object, the present invention is a multi-row vertical filling and packaging machine for simultaneously and continuously producing a filling package formed by filling a plastic film packaging bag with an object to be packaged in a plurality of rows. , At least the non-folded side ends of one plastic film that is continuously fed in the longitudinal direction and folded back in the width direction, or both side ends of two plastic films that are continuously fed out. A pair of vertical seal rolls that continuously form one wide tubular body by continuously vertically sealing each of them in the longitudinal direction.
One or more positions in the width direction of the wide tubular body are continuously heat-sealed in the longitudinal direction, leaving a non-sealed portion having a width of 0.3 mm or more and 5.0 mm or less in the central portion in the width direction. A pair of boundary vertical seal rolls forming a seal portion,
A plurality of non-seal portions of the boundary vertical seal portion are continuously cut in the longitudinal direction at a position 40 to 300 mm away from the roll axis of the boundary vertical seal roll immediately below the boundary vertical seal roll and arranged in parallel. A pair of cut rolls that are cut into narrow tubular body rows and made independent,
Each narrow tubular body row that is cut and runs independently is filled with the object to be packaged and a horizontal seal is applied at predetermined intervals in the longitudinal direction to continuously bag the package. A pair of horizontal seal rolls and
It is a multi-row vertical filling and packaging machine characterized by being equipped with.

In the multi-row vertical filling and packaging machine of the present invention,
(1) The boundary vertical seal portion has vertical seal portions of 0.3 mm or more and less than 5.0 mm on both sides of the non-seal portion.
(2) The boundary vertical seal roll has a recess in the central portion in the width direction of at least one peripheral surface, and forms the non-seal portion at a position corresponding to the recess.
(3) Each of the horizontal seal rolls has a plurality of heat seal bars at equal intervals in the circumferential direction thereof, and at least one of the pair of horizontal seal rolls has a recess for forming a spout. To be provided,
(4) A pair of drawing rolls are arranged between the cut roll and the horizontal seal roll.
Is preferable.

Further, the present invention is a method for continuously manufacturing a packed package formed by filling a plastic film packaging bag with an object to be packaged in a plurality of rows at the same time, and is continuously fed out in the longitudinal direction. , At least non-folded side ends of one plastic film used by folding in the width direction, or both side ends of two consecutively unwound plastic films are lengthened by a pair of vertical seal rolls, respectively. A wide tubular body forming step of continuously forming one wide tubular body by continuously vertically sealing in the direction,
One or more positions in the width direction of the wide tubular body are continuous in the longitudinal direction by a pair of boundary vertical seal rolls, leaving a non-seal portion having a width of 0.3 mm or more and 5.0 mm or less in the central portion in the width direction. Boundary vertical sealing process to form a boundary vertical sealing part by heat sealing
The unsealed portion of the boundary vertical seal portion is continuously cut in the longitudinal direction by a pair of cut rolls at a position immediately below the boundary vertical seal roll and 40 to 300 mm away from the roll axis of the boundary vertical seal roll. , The cutting process of cutting into multiple rows of narrow tubular bodies in parallel and making them independent,
Each narrow tubular body row that is cut and runs independently is filled with the object to be packaged by a pair of horizontal seal rolls, and the package is continuously sealed by applying horizontal seals at predetermined intervals in the longitudinal direction. The bag-making process and the bag-making process
It is a multi-row filling and packaging method characterized by having.

In the multi-row filling and packaging method of the present invention,
(1) The boundary vertical seal portion has vertical seal portions of 0.3 mm or more and less than 5.0 mm on both sides of the non-seal portion.
(2) The boundary vertical seal roll has a recess in the central portion in the width direction of at least one peripheral surface, and the non-seal portion is formed at a position corresponding to the recess.
(3) Disposing a pair of drawing rolls between the cut roll and the horizontal seal roll.
Is preferable.

According to the multi-row vertical filling / packaging machine and the multi-row filling / packaging method according to the present invention, first, one wide tubular body made of a plastic film is formed, and then a boundary vertical seal roll is used for the wide tubular body. In addition to forming a plurality of rows of vertical boundary seal portions that are continuous in the longitudinal direction, the center position in the width direction of the vertical boundary seal portion is set at a position directly below the seal portion (a position 40 to 300 mm away from the axis of the vertical boundary seal roll). It is continuously cut in the longitudinal direction and cut into a plurality of narrow tubular body rows, and then the packaged object is laterally sealed while being squeezed out by a pair of horizontal seal rolls for each independent narrow tubular body row. It is filled and packaged. With this configuration, at the time of horizontal sealing, the narrow tubular body rows are in an independent state without being constrained by other narrow tubular body rows in parallel, so that they are in an independent state in the width direction. It can be freely deformed in the (horizontal direction), and therefore, it is possible to suppress the pinching of the object to be packaged in the horizontal seal portion and the occurrence of vertical wrinkles.

In particular, according to the present invention, a non-seal portion having a width of 0.3 mm or more and 5.0 mm or less is formed in the central portion in the width direction of the boundary vertical seal portion, and further, 0. A vertical seal portion having a width of 3 mm or more and less than 5.0 mm is formed, and the central position in the width direction of the non-seal portion is cut in the longitudinal direction by a pair of cut rolls at a position directly below the boundary vertical seal roll to form a plurality of narrow portions. It is divided into wide tubular body rows. Therefore, the molten plastic film resin residue (slag) does not adhere to the blade of the cut roll. Therefore, it can be used efficiently for a long period of time without reducing the sharpness of the cut roll.

Further, the left and right vertical seal portions formed by the vertical seal portions of the boundary vertical seal portion of the filling package manufactured by applying the horizontal seal portion to the narrow tubular body row are narrower than before. By setting (0.3 mm or more and less than 5.0 mm), the amount of the plastic film used can be reduced as compared with the conventional case. Further, according to the present invention, since the package is not restrained by the left and right vertical seal portions, it can be freely expanded in the thickness direction, and as a result, it is equivalent to the three-way seal type package. It is possible to achieve higher capacity efficiency, reduce the amount of plastic film used, and reduce the manufacturing cost.

Further, in the conventional multi-row filling and packaging machine, since the sealing width of each vertical sealing portion formed in a plurality of rows is wide (5.0 mm or more), it takes time to cool the vertical sealing portion and the temperature is high. As it was, it was sent out to the horizontal sealing means. Therefore, at the horizontal seal position where the vertical seal portion overlaps, the temperature becomes too high, and the plastic film melts excessively and flows, which causes problems such as pinholes.
On the other hand, according to the present invention, as described above, the vertical seal portion of the boundary vertical seal portion located on each side of each narrow tubular body row of the plurality of narrow tubular body rows. Since the width is as narrow as 0.3 mm or more and less than 5.0 mm and the plastic film is cooled quickly, it is possible to suppress excessive melting of the plastic film at the time of horizontal sealing and prevent the occurrence of defects such as pinholes.

Further, according to the present invention, by providing a pair of drawing rolls between the cut roll and the horizontal seal roll, the filling amount of the packaged object can be adjusted and the product is fed to the horizontal seal roll. It is possible to stabilize the shape of the narrow tubular body row and further suppress the pinching of the packaged object and the occurrence of vertical wrinkles in the horizontal seal portion.

Further, according to the present invention, each of the pair of horizontal seal rolls has a plurality of heat seal bars located at equal intervals in the circumferential direction thereof, and at least one of the horizontal seal rolls has a recessed portion. By providing the lateral seal portion, the lateral seal portion is heat-sealed leaving a non-seal portion at a position corresponding to the recessed portion, whereby the lateral seal portion is formed and at the same time, the lateral seal portion is formed. It is possible to form a pouring passage for the object to be packaged, which is composed of an unsealed portion.

It is a schematic diagram which shows one Embodiment of the multi-row vertical filling packaging machine of this invention. It is an end view which shows one Embodiment of the boundary vertical seal roll used for the multi-row vertical filling packaging machine of this invention. It is an enlarged figure which shows another embodiment of the horizontal seal roll used for the multi-row vertical filling packaging machine of this invention. (A) is a front view showing a package manufactured by a multi-row vertical filling and packaging machine equipped with a horizontal seal roll of FIG. 3, and (b) is an end view at position AA of (a). .. It is a schematic diagram which shows the other embodiment of the multi-row vertical filling packaging machine of this invention.

FIG. 1 is a schematic view showing an embodiment of a multi-row vertical filling / packaging machine according to the present invention, and the present invention will be described based on the drawings.

In the multi-row vertical filling / packaging machine shown in FIG. 1, for example, a base film layer composed of a uniaxially or biaxially stretched polyethylene terephthalate film layer or a nylon resin film layer, and a sealant composed of a non-stretched polyethylene layer, a polypropylene layer, or the like. The plastic film F is continuously fed from the upper side to the lower side from the film roll R around which the plastic film F formed by laminating the layers is wound, and is guided by the guide rod 1 during the traveling. While doing so, the plastic film F is folded back in the width direction so that the sealant layers face each other, and the end portions on both sides thereof are overlapped with each other.

Next, the front and rear are folded back as described above by a pair of vertical seal rolls 2 (in the horizontal plane, extending in parallel in the front-rear direction in the figure. In the figure, only the one on the front side located on the front side is shown). By heating and pressurizing with the vertical seal roll 2 while sandwiching both end portions of the laminated plastic film F, the sealant layers are continuously connected to each other in the longitudinal direction (vertical direction) under the rotation of the vertical seal roll 2. The vertical seal portion 4 is formed by fusion-bonding, thereby forming the wide tubular body 5.

Here, the pair of vertical seal rolls 2 are a drive motor and a gear mechanism (not shown) that rotationally drive them in opposite directions at a constant speed, and both ends of one (front side) vertical seal roll 2. The bearing block that supports the bearing is provided with a pair of, for example, an air cylinder that presses the other (rear side) vertical seal roll 2 toward the bearing block that supports the bearing.

Such a pair of vertical seal rolls 2 have one or more circular flange-shaped seal bars 3, 3'on their outer peripheral surfaces at predetermined intervals, and heaters that contribute to heating the seal bars 3, 3'. Is built-in.
The pair of vertical seal rolls 2 is formed by pressing the front vertical seal roll 2 toward the rear vertical seal roll 2 by a pair of cylinders (not shown), so that the overlapping side end portion and the folded end portion of the plastic film F are formed. A portion is sandwiched between both seal bars 3 and 3', and is heated and pressurized to be fused in a palm-like shape to form a vertical seal portion 4, a wide tubular body 5 is formed, and the vertical seal roll 2 is rotated. The wide tubular body 5 is extended and traveled to the lower side in the figure based on the above.

As another embodiment, of the seal bars 3 and 3'provided at positions corresponding to the overlapping side end portion and the folded end portion of the plastic film F, the seal bar 3'on the folded end portion side is omitted. Therefore, the seal bar 3 can be provided only on the overlapping side end portion. Further, the wide tubular body 5 is formed by folding back one long plastic film F in the width direction as described above, and two plastic films F each fed out by using two film rolls R. A vertical seal portion 4 may be formed by heating and pressurizing both end portions thereof in the longitudinal direction, thereby forming a wide tubular body 5. In this case, the folded end side does not exist, and the seal bars 3 and 3'are required at both side ends.

Next, while the wide tubular body 5 is sandwiched from the front and back by a pair of boundary vertical seal rolls 6, for example, in the case where a plurality of rows are two rows, the center position in the width direction is shown enlarged in FIG. Is continuously heat-sealed in the longitudinal direction to form one boundary vertical seal portion 7, and then the center position in the width direction of the boundary vertical seal portion 7 is set in the longitudinal direction by a pair of cut rolls 23 provided immediately below the boundary vertical seal portion 7. By cutting continuously, two rows of narrow tubular body rows 8 and 8'are formed.
As a result, as shown in FIG. 1, one of the narrow tubular body rows 8 separated into two is formed by cutting the vertical seal portion 4 and the boundary vertical seal portion 7 in the longitudinal direction at the side end portions. The other narrow tubular body row 8'is sealed by one of the narrow vertical seal portions 7a, and similarly, the other narrow tubular body row 8'is sealed by the vertical seal portion 4 and the other narrow vertical seal portion 7b.

In the above embodiment, the wide tubular body 5 is cut into two rows by a pair of seal-and-cut vertical rolls 6 and cut into two independent narrow tubular body rows 8 and 8'in parallel. Although shown as an example, the present invention is not limited thereto. For example, a plurality of seal-and-cut vertical rolls 6 may be provided in the width direction of the wide tubular body 5, and according to this, the wide tubular body 5 of 1 may be provided in a plurality of independent narrow tubular body rows 8. The productivity can be improved because the packages can be simultaneously manufactured in parallel from the narrow tubular body rows 8 ... In this case, among the plurality of parallel narrow tubular body rows 8 ..., the one at the intermediate position is a narrow vertical seal portion in which both end portions cut the boundary vertical seal portion 7 in the longitudinal direction. It will be formed by 7a and 7b.

As shown in FIGS. 1 and 2, the pair of boundary vertical seal rolls 6 extend parallel to each other in the horizontal plane in the front-rear direction of the drawing. The pair of boundary vertical seal rolls 6 are located on the front side in the drawing. A mountain-shaped seal blade 9 is projected on at least one of the peripheral surfaces of the front side, and the boundary vertical seal portion 7 is formed on the wide tubular body 5 by heating and pressurizing by the seal blade 9. Can be formed. As shown in the enlarged view of FIG. 2, the cutting edge of the mountain-shaped seal blade 9 has a flat top shape (flat portion 9a) on both sides, a recess 9b in the center, and a wide width due to the recess 9b. By blocking the pressurization and heating of the tubular body 5, the unsealed portion 24 is formed at a position corresponding to the recess 9b. In addition, narrow vertical seal portions 7a and 7b are formed on both side portions of the boundary vertical seal portion 7 by heat sealing by the flat portion 9a.

In the boundary vertical seal portion 7 formed in this way, the non-seal portion 24 located at the central portion in the width direction is continuously provided in the longitudinal direction by a pair of cut rolls 23 provided at a position directly below the boundary vertical seal roll 6. It will be cut and cut into narrow vertical seal portions 7a and 7b. The cut roll 23 is provided at a position 40 to 300 mm away from the boundary vertical seal roll 6, and more preferably at a position 80 to 200 mm away, so that the cut position of the non-seal portion 24 can be easily positioned. , The substantially central position of the unsealed portion 24 can be continuously cut in the longitudinal direction without shifting the cutting position.

By cutting the non-seal portion 24 in the longitudinal direction with the cut roll 23 and cutting the boundary vertical seal portion 7 into two, the plastic film resin melted at the time of cutting does not flow and is accurate. It can be used for a long period of time without the molten plastic film resin (slag) adhering to the cutting blade of the cut roll 23 and without deteriorating the sharpness of the cutting blade. be able to.

The width of the non-sealing portion 24, that is, the width d of the recess 9b of the sealing blade 9 is 0.3 to 5.0 mm. This is because if the width of the non-sealed portion 24 is less than 0.3 mm, it is difficult to position the cut position when cutting the non-sealed portion 24 with a pair of cut rolls 23, and if it exceeds 5.0 mm, a plastic film is used. This is because the effect of suppressing the amount cannot be expected. The cut roll 23 is not particularly limited, but a score cutter, a share cutter, a leather cutter, or the like can be used.

As described above, the boundary vertical seal portion 7 is cut into the narrow vertical seal portions 7a and 7b by cutting the non-seal portion 24 located at the central portion in the width direction in the longitudinal direction, and the outer edges thereof are respectively. An unsealed portion 24'with a width of 0.15 mm or more and 2.5 mm or less remains.
By the way, when the narrow vertical seal portions 7a and 7b are heat-sealed by a pair of horizontal seal rolls 10, the narrow vertical seal portions 7a and 7b are remelted and the melted resin squeezes out to form a horizontal seal. Although it may adhere to the roll 10, as described above, since the non-seal portion 24'remains on the outer edges of the narrow vertical seal portions 7a and 7b, the narrow vertical seal portions 7a and 7b are eaten. The squeezed out resin will be retained in the non-seal portion 24', and it is possible to effectively prevent the resin from adhering to the horizontal seal roll 10.

The seal width of the narrow vertical seal portions 7a and 7b is 0.3 mm or more and less than 5.0 mm, and more preferably 0.5 mm or more and 2.0 mm or less.
This is a length corresponding to three times or more the thickness of the two plastic films F in which the seal widths of the narrow vertical seal portions 7a and 7b are overlapped, that is, if at least 0.3 mm or more, the load exceeds 200 kgf. A wrapping body W that can withstand can be provided, while a narrow cylinder is provided by setting the seal width to a length corresponding to 10 times or less the thickness of two overlapping plastic films F, that is, less than 5.0 mm. The bulge of the shape rows 8 and 8'in the thickness direction is not constrained by the narrow vertical seal portions 7a and 7b, and the filling amount of the packaged object is increased as compared with the conventional four-way seal type package. This is because it can be increased.

The seal width of the vertical seal portion 4 formed by the vertical seal roll 2 and the horizontal seal portion 12 formed by the horizontal seal roll 10 is not particularly limited, but when the package W is made into a bag, the left and right vertical seal portions and the horizontal seal portion 12 and the horizontal seal portion 12 are formed. If the upper and lower horizontal seal portions are preferably 0.3 mm or more and less than 5.0 mm, the filling amount of the packaged object can be further increased.

Further, in the conventional multi-row filling and packaging machine, for example, one wide plastic film is folded in two, a plurality of vertical sealing portions are provided to form a plurality of rows of tubular portions, and each tubular portion is formed. After filling the packaged object and horizontal sealing, the package is cut at the vertical seal position and the horizontal seal position to separate the package into one piece or a plurality of pieces. With this method, it is difficult to pinpoint the cutting position of the vertical seal part and the horizontal seal part, it is necessary to set the seal width to a wide width (5 mm or more), and the temperature of the vertical seal part does not easily drop and is high. It was fed out to the horizontal sealing means at the same temperature. Therefore, when the horizontal sealing is performed, the heating temperature becomes too high at the position where the vertical sealing portion overlaps, and the plastic film is excessively melted and flows, causing pinholes and the like to occur.
Against this, as described above, the narrow tubular body rows 8 and 8'run independently, and the narrow vertical body rows 8 and 8'are located at the respective side ends of the narrow tubular body rows 8 and 8'. By setting the sealing width of the sealing portions 7a and 7b to less than 5.0 mm, the narrow vertical sealing portions 7a and 7b are cooled quickly, and excessive melting of the plastic film at the time of horizontal sealing can be suppressed. The effect can be expected.

Inside the narrow tubular body rows 8 and 8'cut in this way, the objects to be packaged M supplied from a tank (not shown) via a pump and a supply path (not shown) are filled nozzles 11a and 11b, respectively. Is continuously filled from.

The pair of horizontal seal rolls 10 simultaneously sandwich the narrow tubular body rows 8 and 8'that run independently, and provide a predetermined interval in the longitudinal direction of the narrow tubular body rows 8 and 8'. Then, while squeezing out the filled object to be packaged, the squeezing position is heated and pressurized to form the horizontal seal portion 12, so that the upper and lower end portions are formed by the horizontal seal portion 12 and the left and right ends are formed by the vertical seal portion 4. Alternatively, a large number of packages W surrounded by the narrow vertical seal portions 7a and 7b can be made into a bag in a state of being connected in the longitudinal direction of the plastic film F.

At this time, since the narrow tubular body rows 8 and 8'are in an independent state, they are easily deformed (spread) in the width direction (horizontal direction) when sandwiched by a pair of horizontal seal rolls 10. be able to. Therefore, the pair of horizontal seal rolls 10 can heat-seal while squeezing out the object to be packaged at the horizontal seal position, effectively sandwiching the object to be packaged in the horizontal seal portion 12 and generating vertical wrinkles. It can be suppressed.

The pair of lateral seal rolls 10 extend parallel to the front-rear direction in the figure (only the one on the front side located on the front side is shown in the figure), and they are reversed by a motor via a gear set. Moreover, it is driven to rotate at a constant speed. For example, the horizontal seal roll 10 has a plurality of heat seal bars 13 located at equal intervals on the outer peripheral surface thereof and extending in the axial direction, and the heat seal bars 13 facing each other have a narrow tubular shape. By sandwiching and heating the body rows 8 and 8', the horizontal seal portion 12 can be formed over the entire width in the direction orthogonal to the traveling direction of the narrow tubular body rows 8 and 8'.

As the horizontal sealing means, a pair of horizontal sealing rolls may be provided in two stages. In that case, the narrow tubular body rows 8 and 8'are heated and pressed in the first stage to heat and pressurize the horizontal sealing portion. By forming the 12 and pressing the lateral seal portion 12 portion with a cooled seal bar in the second step, the lateral seal portion 12 can be fixed and stabilized.

The packaging W, which is continuously bag-made on the horizontal seal roll 10, is cut in the width direction by cutting a substantially intermediate portion of the horizontal seal portion 12 by a separating means 15 using a rotary cutter or the like, and is integrated into one or a plurality of required bodies. It is carried out in a state where it is separated or a plurality of bodies are connected by making a perforation in a substantially intermediate portion of the horizontal seal portion 12.

FIG. 3 is an enlarged view of another embodiment of the horizontal seal roll 10 used in the multi-row vertical filling and packaging machine, and shows a case where the package W is manufactured in parallel in three rows as an example.
Each pair of horizontal seal rolls 10 (in the figure, only the front side seal roll is shown) has a plurality of heat seal bars 13 extending in the roller axis direction, and is formed on at least one of the horizontal seal rolls 10. A recess 16 is provided at the end of the heat seal bar 13 provided. When the narrow tubular body rows 8, 8', 8 ″ are sandwiched between the pair of heat seal bars 13 and heated and pressurized, the position corresponding to the recess 16 becomes a non-seal portion and is horizontally sealed. A pouring passage 17 composed of the unsealed portion will be formed on the portion 12.

The recess 16 is provided at a position where the injection passage 17 formed on the horizontal seal portion 12 is adjacent to the narrow vertical seal portion 7a (and / or 7b) on the upper horizontal seal portion 12, preferably on the upper lateral side. It is preferable to provide the seal portion 12 so as to be formed in a shape that gradually narrows toward the upper end edge. FIG. 4A shows a narrow tubular body in the middle row of the package W (three rows of narrow tubular body rows 8, 8', 8'' manufactured by the horizontal seal roll 10 of FIG. It is a package W) manufactured in row 8', and is surrounded by narrow vertical seal portions 7a and 7b and a horizontal seal portion 12. As can be seen from the package W, the pouring passage 17 is tapered toward the pouring outlet 18 formed by opening the tip portion thereof, so that the pushing direction of the packaged object is constant and the packaged object is packed. It does not scatter and can suppress the occurrence of dripping.

Further, as shown in FIG. 4A, the spout 18 is formed in a straight line or a curved shape from the upper end edge of the horizontal seal portion 12 on the upper side of the package W toward the side end edge of the pouring passage 17. When the tear-inducing flaw 19 is provided, the package can be easily opened by tearing along the tear-inducing flaw 19. In this case, since the starting end of the tear-inducing flaw 19 is located in the middle of the upper end of the upper lateral seal portion 12, the starting end of the tear-inducing flaw 19 is caught by a roll or the like during automatic filling and packaging, and the tear-inducing flaw 19 is caught. Does not break unexpectedly.

Also in the package W shown in FIG. 4 (a), the seal widths of the narrow vertical seal portions 7a and 7b are three times or more the thickness of the two plastic films F obtained by superimposing the seal widths of the boundary vertical seal portions 7 by cutting. The narrow vertical seal portions 7a and 7b are narrowed by forming them so as to be 10 times or less, that is, 0.3 mm or more and less than 5.0 mm. According to this, as shown in the end view at the AA position in FIG. 4B, when the boundary vertical seal portion 7 is cut to form the narrow vertical seal portion 7a, the sealant layer of the plastic film is formed. However, the resin pool 21 is formed by slightly squeezing out to the filling space 20 side of the object to be packaged, and due to the presence of the resin pool 21, the edge portion of the pouring passage 17 on the narrow vertical seal portion 7a side is always straw-shaped. It will be in an open state. Therefore, the packaged object can be easily poured out along the pouring passage 17, and the occurrence of dripping or the like can be effectively suppressed. Further, since the narrow vertical seal portion 7a has the non-seal portion 24'on the outer edge as described above, the narrow vertical seal portion 7a remelted by the non-seal portion 24'when the horizontal seal portion 12 is formed. Can be retained in the non-seal portion 24'as shown in FIG. 4 (b) to form a resin reservoir 21, so that the resin can be prevented from adhering to the horizontal seal roll 10. it can.

FIG. 5 is a diagram showing another embodiment of the multi-row vertical filling / packaging machine of the present invention. In this multi-row vertical filling / packaging machine, a pair of cut rolls 23 and a horizontal seal roll 10 are formed. A diaphragm roll 14 (only the one on the front side located on the front side is shown in the figure) is provided. The pair of drawing rolls 14 are preferably driven to rotate in opposite directions and at a constant speed by a motor via a gear set, and are packaged by adjusting the distance between the pair of drawing rolls 14. The filling amount of the packaged object to be filled in the bag W can be adjusted, and the shapes of the narrow tubular body rows 8 and 8'are stabilized into the horizontal seal portion 12 of the horizontal seal roll 10. The occurrence of vertical wrinkles can be further suppressed.

In the multi-row vertical filling and packaging machine and the multi-row filling and packaging method of the present invention, a plurality of rows of liquids such as foods and drinks, seasoning liquids, pharmaceuticals, chemicals, viscous substances, or powders / granules are arranged. It can be suitably used when manufacturing in parallel at the same time.

1 Guide rod 2 Vertical seal roll 3, 3'Arc flange 4 Vertical seal part 5 Wide tubular body 6 Seal and cut vertical roll 7 Boundary vertical seal part 7a, 7b Narrow vertical seal part 8, 8', 8'' Narrow Width tubular body row 9 Seal blade 9a Flat part 9b Recess 10 Horizontal seal roll 11a, 11b Filling nozzle 12 Horizontal seal part 13 Heat seal bar 14 Squeeze roll 15 Detachment means 16 Depression 17 Injection passage 18 Injection outlet 19 Tear-induced flaw 20 Filling space 21 Resin pool 23 Cut rolls 24, 24'Unsealed part R Film roll F Plastic film W Package M Packaged object

Claims (9)

It is a multi-row vertical filling and packaging machine that continuously manufactures a filling package formed by filling a plastic film packaging bag with an object to be packed in a plurality of rows at the same time.
At least the non-folded side ends of one plastic film that is continuously fed out in the longitudinal direction and folded back in the width direction, or both side ends of two plastic films that are continuously fed out, respectively. A pair of vertical seal rolls that continuously form one wide tubular body by continuously vertically sealing in the longitudinal direction.
One or more positions in the width direction of the wide tubular body are continuously heat-sealed in the longitudinal direction, leaving a non-sealed portion having a width of 0.3 mm or more and 5.0 mm or less in the central portion in the width direction. A pair of boundary vertical seal rolls forming a seal portion,
A plurality of non-seal portions of the boundary vertical seal portion are continuously cut in the longitudinal direction at a position 40 to 300 mm away from the roll axis of the boundary vertical seal roll directly under the boundary vertical seal roll and arranged in parallel. A pair of cut rolls that are cut into narrow tubular body rows and made independent,
Each narrow tubular body row that is cut and runs independently is filled with the object to be packaged and a horizontal seal is applied at predetermined intervals in the longitudinal direction to continuously bag the package. A pair of horizontal seal rolls and
A multi-row vertical filling and packaging machine characterized by being equipped with. The multi-row vertical filling and packaging machine according to claim 1, wherein the boundary vertical sealing portion has vertical sealing portions of 0.3 mm or more and less than 5.0 mm on both sides of the non-sealing portion. Claim 1 or 2 is characterized in that the boundary vertical seal roll has a recess in a central portion in the width direction of at least one peripheral surface, and the non-seal portion is formed at a position corresponding to the recess. Multi-row vertical filling and packaging machine described in. Each of the horizontal seal rolls has a plurality of heat seal bars at equal intervals in the circumferential direction thereof, and at least one of the pair of horizontal seal rolls is provided with a recess for forming a spout. The multi-row vertical filling / packaging machine according to any one of claims 1 to 3. The multi-row vertical filling / packaging machine according to any one of claims 1 to 4, wherein a pair of drawing rolls is arranged between the cut roll and the horizontal seal roll. It is a method for continuously manufacturing a packed package formed by filling a plastic film packaging bag with an object to be packed in a plurality of rows at the same time.
At least the non-folded side ends of one plastic film that is continuously fed in the longitudinal direction and folded back in the width direction, or both side ends of two plastic films that are continuously fed out, respectively. A wide tubular body forming step of continuously forming one wide tubular body by continuously vertically sealing in the longitudinal direction with a pair of vertical seal rolls.
One or more positions in the width direction of the wide tubular body are continuous in the longitudinal direction by a pair of boundary vertical seal rolls, leaving a non-seal portion having a width of 0.3 mm or more and 5.0 mm or less in the central portion in the width direction. Boundary vertical sealing process to form a boundary vertical sealing part by heat sealing
The unsealed portion of the boundary vertical seal portion is continuously cut in the longitudinal direction by a pair of cut rolls at a position immediately below the boundary vertical seal roll and 40 to 300 mm away from the roll axis of the boundary vertical seal roll. , The cutting process of cutting into multiple rows of narrow tubular bodies in parallel and making them independent,
Each narrow tubular body row that is cut and runs independently is filled with the object to be packaged by a pair of horizontal seal rolls, and the package is continuously sealed by applying horizontal seals at predetermined intervals in the longitudinal direction. The bag-making process and the bag-making process
A multi-row filling and packaging method characterized by having. The multi-row filling and packaging method according to claim 6, wherein the boundary vertical seal portion has vertical seal portions of 0.3 mm or more and less than 5.0 mm on both sides of the non-seal portion. The sixth or seventh aspect of the present invention, wherein the boundary vertical seal roll has a recess in the central portion in the width direction of at least one peripheral surface, and the non-seal portion is formed at a position corresponding to the recess. Multi-row filling and packaging method. The multi-row filling and packaging method according to any one of claims 6 to 8, wherein a pair of drawing rolls is arranged between the cut roll and the horizontal seal roll.

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