JPS5884752A - Method and device for manufacturing packing bag with valve - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention The present invention provides a valve-sealed packaging bag for packaging powder such as cement l-1 lime or granules such as fertilizer and carbon black (hereinafter collectively referred to as ladles and granules). The present invention relates to a manufacturing method and apparatus No. 7'.

In general, this type of packaging bag for 19-8 bodies tends to have air mixed in when the packaged items are filled, and expands after the light J114, making it difficult to store and transport. Paper bags, which can be easily degassed, have been widely used. However, paper bags have problems in terms of water resistance, air resistance, strength, etc., so in recent years, deaerated perforated packaging bags made of glass film such as polyethylene have been increasingly used instead of paper bags. It has become possible to do so.

However, this kind of plastic film packaging bag is
It is necessary to seal the opening after filling the package, but if the package is a powder, there is a problem that this will build up in the opening during filling, making it impossible to heat seal. It has been proposed to provide the opening with an inner valve made of film that can be closed to prevent the package from leaking, and a bag making device equipped with this valve has been developed.

This type of bag-making device uses the outer bag material to be supplied to the bag-making device as a
The bag is finished by extrusion, and the film is formed to double the width of the bag size. After sealing the valve, the product was secured by folding it in half, heat-sealing it at three points, and cutting it to the desired length.

However, in conventional packaging manufacturing equipment such as this, since the size of the film is wide, a large-sized molding device is required, which increases the equipment cost, and the molding and printing process after molding, etc. In addition, there are many constraints such as an increase in the floor space occupied, and it is difficult to make a single part after molding. : Since the cut products are supplied as a fixed size, there is a large amount of cutting loss, which significantly increases the manufacturing cost.

The present invention is made by extruding a cylindrical bag film with one meter cut off and cutting one edge into a cylindrical shape, and then stretching it wide and conveying it, and making it into a small inner valve film. Outer valve film and 'fr: After being intermittently supplied onto the bag film being transported, cutting, heat sealing, and perforating the valve opening, this wide valve sealing film is folded in half in the width direction. A valve seal packaging bag is constructed by cutting the valve seal to a predetermined length and heat-sealing the inner bag, and the film for the inner bag is supplied to VC1δ so that it merges with the previous wearing film. These are provided with multiple Vs with a phase shift between both films.
# To obtain a double-layer valve-sealed packaging bag by drilling several deaeration holes.
A method and device for manufacturing valve-sealed packaging bags that reduce the production cost by reducing the ff) Dtfi cost and reducing the cutting area by making it possible to downsize the forming device by forming four claws. This is what we provide. Embodiments of the present invention will be described in detail below with reference to the drawings.

Figures 1 to 3 show the i! !
A simple example of a two-layer type packaging bag manufacturing device is shown to explain the force-strength method. Fig. 1 is a wave pressure surface view of the seven squares, and Fig. 2 is a side view of Fig. 1 when viewed from above. , FIG. 3 is a side view from B in FIG. 1. In these figures, the entire packaging bag manufacturing device is arranged in a U-shape, and this will be explained in the order of steps as follows:
First, a roll-shaped outer bag film 2 is rotatably supported on a pair of left and right original fabric stands 1 arranged M on the floor.

This outer bag film 2 is formed into a long circle by an inflation-type extrusion machine (not shown), and after a predetermined printing is applied, one edge is cut with a slitter and wound up. As a result, it is formed into a long half-fold shape. Reference numeral 3 denotes a handle for moving the film 2 for use in the axial direction and positioning it. The spreading device 4 arranged downstream of the original fabric table 1 is formed into a triangle 8i, and its lower end is pivoted to the lower end of the frame 5. 1″450
It is equipped with a spreading plate 6 for the new film that is inclined at an angle. The semi-vi-shaped outer bag film 2 is guided in one direction from the top of the spreading plate 6 by means of a guide roller 9 and a pair of nip rollers 10. The bag film 2 is spread out into a wide width 2, passed through a guide roller 11, and then transported under the angular force direction to a machine 9. Automatically adjust the expansion plate 6 in the width direction so that it passes over the 44111llI, electric tube sensor and servo motor 1.
In the automatic W field leveling machine installed in the third grade, pl 14 is a handle that adjusts the stretching device 4 by moving it back and forth depending on the film size. Although not shown, the stretching device 4 is provided with a heating roller that heats and rolls the stretched film 2 to form all the wrinkles.

On the first stream side of the spreading device S: 4, an inner bag film supply device 9, whose entire body is indicated by a ladle number 15, is installed.
A roll-shaped inner bag film 18 is rotatably supported on a pair of left and right bearings 1T provided on the upper part of the inner bag 6. This inner bag film 1B is extruded and formed to have the same width as the stretched outer bag film 2, and its friction δ is also made thinner than the outer bag film 2. .

On the upper and lower parts of the frame 16, a pair of rubber rollers 19 and 20, each of which is connected to a motor and which is connected to a motor, is mounted on a 1L shaft 8. On the downstream side of the valley film 2.18
However, depending on the size of the bag, intermittent feeding is easy to cause.↓Does the sea urchin move up and down? Intermittent transfer w, Il equipped with 7 suspended crawlers 21
A tidying structure 22 is provided. 23 is inner bag film 1
This is an alarm device that notifies you to replace the VC roll with a new roll when the remaining amount of VC roll winding becomes small.
is a phototube of an automatic adjustment machine that moves each film 2.18 in the width direction and adjusts kIJ so that each film 2.18 passes on a predetermined axis.

Furthermore, on the downstream side of the inner bag film supply device 15, a device 26 is installed, and frames 2 on the left and right sides of the device 26 are provided.
Between 7 and 7 are guide rollers 2B and 29.

A perforation machine 32 is provided for perforating each film 2.18 guided by 30.31 and raised at a predetermined distance. The machine 32 is equipped with a pair of front and rear needle stems 33 and 34, which are supported by a frame 2T and which are formed to be movable forward and backward relative to each of the films 2 and 18, and each of which has a large number of needles 35. Planting δ has been done. And needle trunk 33,3
4 is driven by an air cylinder (not shown) to advance and retreat, and the outer bag film 2 and the inner bag film 18 are arranged on the needle stems 33 and 34 with their phases shifted so that the 7 hole positions do not overlap with each other. It is configured so that a large number of needle holes can be made by the needle 35. Furthermore, on the outside of the needle stems 33 and 34, there is a bag's
A major work space is provided for changing the position, spacing, diameter, number, etc. of holes by Class S, and 36
is the step for this task.

The valve sealing device, which is designated as a whole by the symbol 3T, is provided at its entrance with both films 2 and 18 (after which both films 2 and 18 are piled up after perforation and descended after being changed in direction by a guide roller 38).
．． They are collectively called 18'ii bag 39. ) are sandwiched from above and below and fed intermittently to the device 3T.The feed rollers 40, 417) of tr-4J are supported by the frame 42 and mounted on a shaft, and in front of it is the bag 3B. An adjustment roller 43 is provided to adjust the phase between the needle hole position and the needle hole position. Valve seal is device 3
T is @ temporary pair of intermittent feeding machines 44 and 45 aA
), each of these has a narrow outer valve film 46.
．． 47 and inner valve film 48.49 are fed out '114
44 and 45 are arranged in reverse order and supported by bearings on the frame 42. s o is a sin air cylinder, and the valve films 46, 48 and 47, 49 overlapped by the rollers 52, 53 are intermittently moved at predetermined intervals by the feeding rollers 54, 55 at the tip of the piston rond, which move back and forth. There is a desire to bring it out. Also, 56
．． Reference numeral 57 denotes a feeding machine provided below each of the air cylinders 50.51, which has a built-in roller that cooperates with the air cylinder 50.51 to feed out the valve films 46.48 and 47.49 intermittently. In addition, valve films 46.48 and 47. are placed in the feeder 56.57.
A cutting blade for making perforations at 49 predetermined positions kl' and a sealing part for heat sealing near the perforations to prevent both valve films from slipping are built in. Beneath the valley feeding mechanism 44, 45 constructed in this way, a first valve mounting machine 58 and a second valve mounting machine 59 are arranged in front and rear on the conveyance path of the bag 39, respectively. ing. Of these, the machine 5B with the first valve is equipped with a pair of redirecting rollers 6 that clamp the valve film 46, 48 from the punishment body, redirect it, and merge it onto the bag 39.
0 and the heat sealing machine 61 and % (Ih).

FIG. 4 is a plan view and an enlarged plan view showing the sealing state by the heat seal plate 61, and shows that the upper seal plate moves up and down with respect to the seal stand fixed below the bag 39. 91 bag 3B and the valve film 46.48 superimposed on the soil form a triple sealing part 62, 63.64il'
C, and the valve port 65 is sealed by the seal plate serving as the valve opening member between the bag 39 and the valve film 46.C.
It is constructed so that it can be opened by penetrating the four sheets of 48. Generally, the heat sealing plate 61 is provided with a cooling pipe provided with a compressed air outlet for cooling the heated portion after the heat sealing surface. In FIG. 4, a chain line 66 is a planned half-folding line, and a -t' chain line 67 is a planned cutting line. Furthermore, between both valves 5B and 59, there is a phototube 68 for film feed control, an extension of the heat seal part, a perforation,
A water cooling roller 69 is provided to prevent tearing, etc., and an adjustment roller 70 is provided to adjust the phase between the plates 58 and 59. Also, valve film 46.48
C. It is configured to be cut from the perforation by being held between the direction change rollers 60 and intermittently pulled by a feed-out roller 80, which will be described later.

Next, the second valve attaching machine 59 clamps the valve films 47 and 49 with longitudinal force and changes the direction of the closing bag 39 and the valve film 46.
A pair of redirection rollers and heat sealing machine 1 to be merged onto the top of 48
2. FIG. 5 is a plan view and an enlarged plan view showing the sealed state by the heat sole machine 72, and shows the bag 39
As the upper seal plate moves up and down with respect to the seal stand fixed below the bag 3, the valve film 46.48 and the valve film 47.49 superimposed thereon
9 and are heat-sealed at the three-force sealing portions 73, 74, and 75. In FIG. 4, the seal portion 63 is located outside the valve port 65, and in FIG. 5, the seal portion 74 is located inside the valve port 65.

76, the valve films 46, 47, 48, 49 are heat-sealed to the fc assembly 39 (hereinafter, this will be collectively referred to as the bag with valve TI). After this, when folding in half, the bag 3
In order to prevent the two films 2 and 18 of 9 from shifting, the bag 39 is temporarily sealed from the bottom with a cutting position cage shown by reference numeral 78 in FIG. It's Laura. In addition, in this example, the phase adjustment between the two valves was adjusted using the adjustment roller TO, and the double-edged valve was operated in step tNW&, but the second valve+I step was Separate positioning may be performed using a phototube or the like. Further, at the downstream end of the frame 42, there is a small grooved top and bottom made of rubber that is intermittently fed into a valved bag 77' and uses its pressure to release air between each film. A pair of feeding rows 28
0, and a transfer adjustment device 82 consisting of a hanging roller 81 etc. that moves up and down.

In this way, on the downstream side of the tensioning device 37 with a valve, there is provided a half-stretching device 83, which is the same structure as the stretching device 14, in order to fold the bag 77 with a valve in half. has been done. Ding, that is,
The half-folding device 83 is formed into a triangular plate shape, and is equipped with a half-folding plate 85 that is pivoted to the lower end of the lower end T-frame 84 and is bent at an angle of 45. By rotating a threaded rod 86 connecting the upper part and the frame 84 with a handle 87, a #4 bevel angle can be adjusted. Then, the valved bag 77 is guided from the lower end of the folded bag 8 [85] to the top through the kite rollers 88 and 89, folded in half with the valve films 46 to 49 inside, and passed through the guide rollers 90 in the bag angle direction. It is configured to be conveyed to the downstream side of. 91 is a valve sealing bag γT
This is an automatic adjustment machine equipped with a phototube sensor and a servo motor 92 foil, which automatically adjusts the Ugyutuna 85 in the width direction so that it passes through the specified shaft thin soil. In addition, it is a handle for adjusting the movement of the half-Japanese set 83 back and forth.

Next, a sealing device 94, a part of which is shown in a plan view, is provided sixthly on a line perpendicular to the valve sealing device 3T. At the starting end of this seal equipment 94, there is a bag 77 with a valve that is half-v1.
An upper pair of rubber rollers 95 are provided to take up the material and send it to the sealing section, and a pair of upper and lower rubber rollers 96 are provided at the terminal end section vt-1j1, as well as a valve-handling bag 77' (f: to take up and send it to the cutting section 109). There is a valve between the rubber rollers 95 and 96 of both swords.
A chain belt 97 that holds and conveys the single bag IT from above and below is attached to and stretched over the sprocket 98°99, and there is no resistance of the valve sealing bag 77 downstream of the sprocket 98 at the starting end. A rotary blade 100 is provided to cut the side edge according to the bag size. Reference numeral 101 denotes a selvage remover that winds up and removes the cut selvage so that there will be no curls in the subsequent process. The broken 102 is a temporary sealing rod installed in order to improve the finish of the heat sealing after this, and it is a temporary sealing rod that is inserted into the running path of the sealing belt 103 that interlocks with the chain belt 97. , A cooling section control 04 is installed in this corner. seal belt 10
On the downstream side of 3, a heat sealing rod 105 for permanently sealing the edge of the cut side of the valve bag TI is attached to the sealing edge protection belt 1.
I was able to see it in the travel path of 06, and the lower end of the awn was @
1] is provided with a cooling part 108 which improves the finish of the sealing part by cooling the valve bag 77, which is being conveyed while being held down by the holding belt 107, while pressing it. The sealing device 94 is provided with a thermal isolation device (not shown) to prevent secondary troubles caused by the film being fused by sealing heat during a temporary stop due to a minor accident. There is. Further, the sealing device 94 includes a cutting section 1 that heat-seals and cuts the valved bag 7T of the cylinder V whose ears are heat-sealed at two locations in the longitudinal direction according to the dimensions of the bag.
09 is provided on the frame 110 yen. That is,
On the downstream side of the rubber roller 96, there is an intermittent transfer IjMl adjustment section 111 consisting of rollers that can be easily removed from 1 to 1ζ to facilitate intermittent transfer. , a pair of upper and lower rubber rollers 112 that take up the bag 17 and send it to the cutting Rb 109.
and the kite roller 113 that changes the direction to T. Below the kite roller 113, a pair of vines 114 and 115, heat sealing rods 116 and 117, and a hanging path circle of the 1-valve bag 7T are provided.
7'lzCut it to the specified size, heat seal the top and bottom ends, and use a chain belt (not shown) to attach it to 1111 in front of ``P'' in Figure 3.
The structure is such that the paper is conveyed in a hanging position from 1 toward the back side of the paper and collected. Reference numeral 118 is a phototube device for determining whether or not the valve +1 bag 770 is to be cut.

A method of manufacturing a valve-sealed packaging bag using the i/J4 packaging bag made as described above will be described. ■1 The film is formed into a continuous cylindrical shape using an inflation-type extrusion molding machine (not shown), and while being flattened by rollers and conveyed, a predetermined printing is applied to the surface of the film. The material is cut with a slitter to give it a new shape and is then rolled into a roll. This roll-folded outer bag film 2 is placed on a raw fabric base 1. - The thin double-width interior film 18 layered and rolled using an extrusion molding machine is mounted on the bearing 17 of the interior film supplying device 15; 46.47 and interior film 4 B, j'l are valve sealing device 37
It is set on. and all these films hxt
J- When the prime mover is started after being guided through a predetermined path through a predetermined path and set in the final step 1, the outer bag film 2 enters the top of the spreading device 8i6 from the nip roller 10 of the spreading device 4, is guided downward, and passes through the guide roller 11. By turning the carpet in the direction of the corner of the mouth, the carpet is spread wide by the action of the spreading plate 6, and is continuously fed by the rubber rollers 20. In addition, the film for the inner bag is continuously transported 8 by a rubber roller 19, and both films 2 and 18 are transported by a hanging crawler 21, a guide roller 28.29°3G, 31.38°1
The feeding rollers 40, 4 are piled up while being conveyed in one day.
It will lead you to 1. Then, by intermittently rotating the feed roller 40.41 at a cycle of 41 loaves, both films 2.18
is intermittently conveyed', and this intermittent conveyance and rubber roller 19
．． The loosening of the films 2, 1B caused by continuous conveyance by the hanging crawler 20 is absorbed by the vertical movement of the hanging crawler 21. Both films 2.18, which are intermittently conveyed in this way, are lifted up between the button frames 33 and 34 of the machine 32, and are removed by the needles 35 of the needle bars 33 and 34, which are moved forward and backward by air cylinders. The air hole is opened. This is because the sword 35 of the button frame 33 and the needle 35 of the assembly frame 34 are provided with phases shifted from each other.
The needle holes in the twisted outer bag film 2 and inner bag film 18 penetrate each other (there is no force). Both films 2 after perforation
18 is a bag 39, which is intermittently conveyed horizontally between delivery rollers 40, 41 and delivery roller 80 with outer bag film 2 facing downward. On the other hand, the narrow outer valve films 46, 47 and inner valve films 47, 49 are changed in direction by direction change rollers 60, 71 and guided to a feed roller 80. The films 46 and 47 are transported intermittently, and the films 46 and 47 are transported intermittently.
．． The slack of 48°49 is absorbed by the air cylinders 50,51 moving the feed rollers 54,55 back and forth. In this case, the order in which they are stacked is 1-, the outer valve film 471, the circular valve film 49, and the inner valve film 48.
, outer flap film 46, bag 3 days old. First, in the process of making the first valve, perforations are made in the film 46 and 48 of both swords at predetermined lengths using a cutting blade of a 56 yen feeding machine, and the film is then stacked on the soil in the bag 39 without cutting. .

In the conveyance path of the bags 39 and films 46 and 48 that are conveyed in an overlapping manner, the sealing plate of the ripe sealing machine 61 on the plate 58 of the first valve is moved up and down at a predetermined timing, as shown in FIG. As a result, the three-force seal portions 62, 63, and 64 are heat-sealed, and the bag 39 and the film 46, 48 are integrated, and the squares 65 are exposed by penetrating the bag 3B and the film 46, 48.

Then, the valve films 46 and 48 are held by the changing rollers 60 and pulled by the feed rollers 80 to be cut from the perforations, and the second valve film 46 and 48 are cut by the machine 59 together with the bag 39.
transported to. For the machine with the second valve, the outer valve film 4T and the inner valve film 49, which are perforated at predetermined lengths by the cutting blade in the feeding handle 5T, are supplied to the machine.
Since the seal 8i of the seal e172 is stacked on top of the bag 39 with the first valve that has stopped,
3-force sealing part as shown in Figure 5? 3.74.75 is a heat sealing field and is integrated with the first valve + 1 @ fitting. During conveyance, the valve films 47 and 49 are cut from the perforations, and a long valve (-1 bag TI is completed).
0, the air is no longer bleed δ, and the hanging p roller 81 absorbs the loosening caused by continuous conveyance and intermittent conveyance, and the bag 7T with the valve is conveyed from the kite roller 88. When heading toward the guide roller 90, it is folded in half by the action of the triangular Q half-folding plate 85, and is conveyed to the sealing device 94 by the tension of the rubber roller 95.Then, it is pulled by the rubber roller 86 in the sealing device [94]. , chain bell) 97 and while being conveyed continuously, the edge without a rainbow crease is first cut by a rotary blade 100, and the cut edges are wound up by a re-winding machine 101 and collected 8. It will be done. The edge on the side where the ears are cut is temporarily sealed fL with a temporary sealing rod 102, and then cooled with a cooling member 104, and the heat seal is broken continuously by a heat sealing rod 1osvC, and the sealed portion is cooled with a cooling portion 1108. Ru. The valved bag 77, which has thus become a flat cylindrical shape, is conveyed to the cutting section 109 by the tension of the rubber roller 112. In this case, the rubber roller 112 rotates intermittently and the rubber roller 96 rotates continuously, but the loosening of the bag 77 with valve t1 due to this difference in rotation is absorbed by the intermittent transfer adjustment device tllivc. Cutting section 1
In 09, a chain belt (not shown) is running from the front flll in FIG. At the same time, cutters 114 and 115 cut parts corresponding to both ends of the finished product shown by chain 1fM67 in FIG. 4, and heat sealing rods 116 and 117 heat seal the cut parts.

In this way, the finished products that have been transported are suspended horizontally at the end of the transport and then loaded.

The soil is packed in bag 39, outer bag film 2 and inner bag film 1.
A double-layered valve-sealed packaging bag with a double structure of 8! Although the method and device thereof have been described, the present invention can also be applied to packaging bags with a -)ψ substitute valve.

That is, in the case shown in the figure, the film for the "Rabi" bag, the Ishoso monk 15 and the device 26 were removed, and the stretched film 2 was directly guided to the valve sealing device Nj37 as described above. In order to seal the valve using the ↓ method, it is possible to make a one-layer valve sealing packaging bag. ff: Although an example in which the film is spread out on the spreading table 1 is shown, the film before cutting may be placed between the spreading table 1 and the spreading device 4 to cut the edges.

From the above explanation, it is clear that the invention VC
To remove the twist, extrude it into a cylindrical shape and trim one edge.11. The half-folded film for bags is stretched wide and transported, heat-sealed with the cutter and punched with valve holes, and then this wide film with valves is folded flat in the width direction and folded into a predetermined shape. By cutting each length and heat-sealing, a valve seal packaging bag is formed into a shape, and the inner bag film is supplied so as to merge with the bag bag film. 2/1 by drilling out-of-phase deaeration holes between both films.
', Type 7 P+1 packaging bag V? -In order to prevent powder and granules from flowing out after filling, the valve-sealed packaging bag is extremely efficient and continuous, with a double-layer type packaging that has excellent deaeration and moisture-proofing effects. In addition, it is possible to use a relatively thick half-folded film for the outer bag, so it is not necessary to prepare the doll's drink shape, and the printing process and other costs can be reduced. Since the area can be reduced, installation costs can be reduced to a large extent, and cutting loss of materials can be reduced, so that the cost of manufacturing bags can be reduced.

[Brief explanation of the drawing]

Figures 1 to 6 show valve seal packaging bags according to the present invention.
An example of a two-hat two-valve sealing packaging bag manufacturing device, which is a device for explaining the R-manufacturing method, is shown; FIG. 1 is a schematic front view thereof, FIG. Figure 3 shows B observation m in Figure 1.
] Figure 4 is a plan view and enlarged plan view for explaining the process with the first valve, Figure 5 is a plan view and enlarged plan view for explaining the process with the second valve, and Figure 6 is a plan view and enlarged plan view for explaining the process. FIG. 2 is a plan view of the heat-sealing side edge of the valve-sealing packaging bag. 2--...Film for outer bag, 4th issue...Expansion device, 6-
・-・Spreading plate, 18・・・Film for inner bag, 26・・
・φ inner bag film L (ship equipment, 33° 34...button frame, 35...-e needle, 3T...valve seal is equipment, 46.
48...Film for outer valve, 47.49...Film for inner valve, 52゜53.Fist...Roller, 56.57.
...Feeding machine, 58...The 19th page is machine, 59.
...The second valve is a machine, 61,72・0・-heat sealing machine,
62163.64, 73, 74, 75...Life seal part, 65-@...Valve port, 66\', 7 io...Direction changing roller, 85...New board, 105... ... Heat sealing rod, 114, 115 ... Cutter, 116, 117
...Heat sealing rod.

Claims (3)

[Claims] (1) A process of extrusion molding a long cylindrical bag film, a process of cutting one edge of this bag film, a process of expanding and sending out the cut film for a folded bag, and A step in which the film for the bag and the film for the inner valve are overlapped and sent out, cut into a predetermined length, and then fed onto the bag film being transported; a step of sealing and drilling a valve port;
A process of folding the bag film 1 in half in the width direction, and a process of sealing the opening edge of the half-folded bag film 1 and both longitudinal edges of the bag film cut into a predetermined length. A method for producing a valve seal packaging bag, comprising: (2) A half-folded film spreading plate formed in a triangular plate shape, and an inner valve film and an outer valve film disposed at the blades on the conveyance path of the stretched bag film, which are held by rollers and merge together. An intermittent feeding mechanism, a cutting mechanism having a redirection roller and a cutting blade for the valve film fed out from the intermittent feeding mechanism, and a heating device disposed within the conveyance path of the overlapped bag film and valve film. a sealing member, a valve hole punching member, a folded plate for a valve sealing film formed into a triangular plate shape and disposed on the downstream side of the heat sealing member;
A valve seal packaging bag manufacturing apparatus characterized by comprising a nine-heat sealing member and a fixed-size cutting member disposed within a conveyance path of a half-folded valve sealing film. (3) A half-folded film spreading plate formed in a triangular plate shape, and an inner valve film and an outer valve film that are arranged on the blades on the conveyance path of the stretched bag film and are held together by rollers to join together. an intermittent feeding mechanism, a cutting mechanism that shoulders the redirection roller and cutting blade of the valve film fed from the intermittent feeding mechanism, and a cutting mechanism disposed within the conveyance path of the stacked bag film and valve film. a heat-sealing member and a valve opening punching member; a semi-folded plate for a valve sealing film formed in a triangular plate shape and disposed downstream of the heat-sealing member; and a conveyance path for the half-folded valve sealing film. and a heat sealing member and a sizing member disposed in the bag film transport path between the half-fold film stretching plate and the intermittent feeding mechanism. It runs parallel to the feeding mechanism for inner bag film of the same width.
A number of needle-like bodies for punching deaeration holes are provided on the outside of the film for bags and the film for round bags, and are toothed on the top with mutually shifted phases and can move forward and backward with respect to both films. A valve seal packaging bag manufacturing device characterized by: