JP4875877B2 - Bag-making device with hem - Google Patents

Description

  In the present invention, bag materials are made into bags, and various hem-attached bags such as gusset bags with hem are made. Preferably, various products such as powder and granules are filled in the bag during the bag-making process. The present invention relates to a bag-making device with a hem including a bag-filling device with a hem that is sealed.

In general, a gusset bag refers to a bag formed into a substantially rectangular tube shape or a substantially box shape by filling a bag with contents. The hem is a belt-like protruding piece formed in the longitudinal and / or transverse direction on the side of such a bag or other types of bags, and functions as a bone part of the bag to increase the strength of the bag. Since there is an advantage that it can be improved, it is used when manufacturing a bag for storing a heavy product or a box-shaped bag requiring strength.
As this kind of bag making and filling device with hem, for example, there is one described in Patent Document 1 below. In this bag making and filling apparatus, a sheet film of a predetermined size is formed into a cylindrical shape by a bag making guide, and further hem flaps are formed at each corner of the cylindrical film by an overhanging guide in the process of intermittently transporting the bag making tube by a feeding belt. Form. Then, the heater is opposed to each end face of the pressing guide provided on the two opposite faces of the bag-making tube, and the hem flap is sandwiched between each end face of the pressing guide and each heater, and the tubular film is heated in a stationary state. Seal. Thereafter, the cylindrical film having the hem heat-sealed by moving the cylindrical film with the feeding belt described above is moved.
The head of the previous gusset bag and the bottom of the next gusset bag are simultaneously heat-sealed by the horizontal sealer, and the space between them is cut with a cutter. The inside of the next gusset bag is filled with contents such as powder and granules from a bag-making tube, and the head is sealed with a horizontal sealer and sealed and cut.
JP 2004-352306 A

  However, in the bag making apparatus with a hem described in Patent Document 1, each pair of the overhanging guide and the pressing guide is heated by the adjacent heater, so that the bag making tube is also warmed. Therefore, when the cylindrical film is fed out by the feeding belt, the film easily sticks to the bag-making tube, the overhang guide or the pressing guide due to heat, and the feeding resistance of the cylindrical film increases, so that the feeding belt easily slips and the film is fed out. There is a problem that does not go smoothly.

  In view of such circumstances, an object of the present invention is to provide a bag-making bag device with a hem that allows a hem to be formed by feeding a packaging material with high accuracy even when there is a feeding resistance.

Heme-equipped bag bag device according to the invention, the packaging material is passed through the Seibukuro tube thereby forming a tubular packaging material, the side surface of the projecting guide and bag making tube which projects from the corner of the side surface of the bag making tube A hem flap is formed by projecting a side surface of the cylindrical packaging material by a packaging material guide disposed opposite to the cylindrical packaging material , and the hem flap is heated and sealed to form a hem on the side surface of the cylindrical packaging material. In the bag making apparatus with a hem as described above, the hem sealer that forms the hem by sandwiching the hem flap formed on the side surface of the tubular packaging material with the receiving part and heat-sealing, and the hem sealer with the hem flap sandwiched and a moving mechanism for feeding a packaging material by which the receiving portion is moved along the bag making tube, packaging material guide, the guide protruding be disposed between the protruding guide in the feed direction of the tubular packaging material Parts overlapping to form a Hemufurappu by provided in a stationary state, receiving portions on both sides of the packaging material guides are movably disposed along the Seibukuro tube while heating the seal by sandwiching the Hemufurappu with Hemushira It is characterized by that.
In the present invention, the hem flap formed on the side surface of the cylindrical packaging material is sandwiched between the hem sealer and the receiving part and heated and sealed, and the hem sealer and the receiving part sandwiching the hem flap are moved along the bag-making tube, The hem flap can be heat-sealed to form a hem and the packaging material can be fed out. Even when the packaging material is fed out, even if there is a feeding resistance due to heating, an overhang guide, etc., it can be fed out with a predetermined length with high accuracy.

Moreover, the packaging material guide is provided in a stationary state so as to partially overlap the overhanging guide so as to face the bag-making tube, thereby forming a hem flap, and receiving portions are movably disposed on both sides of the packaging material guide . Therefore , when the hem flap is sandwiched between the hem sealer and the receiving portion and the cylindrical packaging material is fed out, the packaging guide is partially placed on the overhanging guide and is opposed to the bag making tube. It can be delivered and transported neatly with hem flaps protruding on both sides or one side of the cylindrical packaging material without causing deflection or slack in the portion of the packaging material that contacts the packaging material guide.
Further, the drive source for the contact / separation movement with respect to the receiving portion of the hem sealer is preferably a motor, and the timing of the pressing movement for holding the hem flap and the separation movement for releasing the hem or hem flap can be reliably synchronized. In addition, since the hem flap or hem clamping and release by all hem sealers and receiving parts can be synchronized, the packaging material will not be displaced. On the other hand, since it was conventionally connected and separated by a cylinder, it was difficult to synchronize clamping and release timing.

According to the present invention, it is possible to feed the packaging material while sandwiching the hem flap between the hem sealer and the receiving portion and heat-sealing. You can pay out. Further, since the feeding belt is not used for moving the packaging material, there is an advantage that the height of the bag making apparatus can be lowered and parts can be easily replaced for maintenance and size change.
Moreover, when the hem flap is sandwiched between the hem sealer and the receiving part and the cylindrical packaging material is fed out, the packaging guide is partly overlapped with the overhanging guide and opposed to the bag-making tube, so that it is fed out. It can be delivered and transported neatly with hem flaps protruding on both sides or one side of the cylindrical packaging material without causing deflection or slack in the portion of the packaging material that contacts the packaging material guide.

Hereinafter, a bag making and filling apparatus with a hem according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1A is a view showing the configuration of the main part of the bag making and filling apparatus, FIG. 1B is a perspective view showing a gusset bag obtained by the bag making and filling apparatus, and FIG. 2A is a hem flap formation of the bag making and filling apparatus. (B) is a horizontal sectional view at the upper end of the second guide plate, FIG. 3 is a front view of the main part showing the film moving mechanism in the hem manufacturing section, FIG. 4 is a side view of FIG. 3, and FIG. The main part horizontal sectional view of the hem seal mechanism in the hem manufacturing part, FIG. 6 is an explanatory view of the main part of the hem forming mechanism of the hem manufacturing part.
In the vertical bag making and filling device 1 which is the bag making device shown in FIG. 1A, for example, a rectangular tube making tube 2 (hereinafter simply referred to as a bag making tube) having a substantially square cross section is arranged in the vertical direction. A rectangular tube bag making guide 3 (hereinafter simply referred to as a bag making guide) is attached in the vicinity of the upper portion of the bag making tube 2. Between the outer peripheral surface of the bag-making tube 2 and the inner peripheral surface of the bag-making guide 3, a space having a substantially rectangular shape in plan view through which a sheet-like film passes is provided as a packaging material.
A film roll (not shown) for winding a sheet-like film is provided on the side or lower side of the bag-making tube 2. Therefore, the film fed out from the film roll is folded by the bag making guide 3, passes through the space between the bag making tube 2, is folded into a substantially rectangular tube shape along the outer peripheral surface of the bag making tube 2, and The joints at both ends of the rectangular tubular film are positioned at the corners and sent downward.

In the bag making tube 2, a hem manufacturing section 6 including a hem flap forming mechanism 4, a hem sealing mechanism 5 A, and a hem forming mechanism 5 including a film f moving mechanism 5 B is provided below the bag making guide 3. Below that, a gusset claw 8 for folding the lower end (and the upper end) of the film f formed in a rectangular tube shape on the lower side of the lower end of the bag making tube 2 into a flat plate shape to form a gusset bag F is provided. A horizontal sealer 9 that seals the upper and lower portions of the gusset bag F in the horizontal direction and a cutter 10 that cuts the middle of the horizontal seal portion in the horizontal direction are provided on the lower side.
A bag making and filling apparatus 1 shown in FIG. 1A is configured to convey and fill contents such as a granular material through a bag making tube 2 in a gusset bag F whose bottom is horizontally sealed. When filling the granular material as the contents, the auger funnel tube is inserted to the lower end of the bag making tube 2.
Further, FIG. 1B shows a perspective view of the gusset bag F manufactured by the bag making and filling apparatus 1. The gusset bag F has a substantially rectangular tube shape, and heat-sealed hems h are formed in a pleated shape with a predetermined width at the four corners of the side surface, and the bottom surface and the top surface are each folded flat. Thus, the bottom seal portion s1 and the opening seal portion s2 are formed.

Next, the hem manufacturing unit 6 used for manufacturing the hem h of the gusset bag F shown in FIG. 1B using the bag making and filling apparatus 1 shown in FIG. 1A will be described with reference to FIGS. .
In the hem manufacturing section 6, the hem flap forming mechanism 4 has the same configuration as that described in Patent Document 1 described above, and a bag-forming tube 2 having a square cross section, for example, a rectangular shape, has a pair of opposing long side surfaces 2 a and 2 a. And short side surfaces 2b, 2b, and substantially trapezoidal protruding guides 4a, 4a are respectively formed on both sides of each long side surface 2a in the horizontal direction (see FIG. 2). Each overhang guide 4a has an upper ridge line formed into an inclined line 4b.
Therefore, a film (hereinafter referred to as a square tube film) f formed into a substantially rectangular tube shape via the bag making guide 3 passes through the four overhanging guides 4a of the hem flap forming mechanism 4, so that each Three hem flaps h1 and a film having a shape with long sides widened on both sides (see FIG. 2 (a)) and further formed at three corners by partial overlap with a hem forming mechanism 5 described later A hem flap h2 composed of a joint at both ends is formed (see FIG. 2B and FIG. 6).
Here, the hem flaps h1 and h2 refer to projecting pieces of the film before completion of heat sealing, and those after completion of heat sealing are referred to as hem h.

In the bag making tube 2, the hem forming mechanism 5 provided on the lower side of the hem flap forming mechanism 4 has a long side surface 2a facing the long side surfaces 2a, 2a of the bag making tube 2, as shown in FIGS. The first guide plates 12, 12 having substantially the same width as the first guide plates 12, 12 are fixedly disposed, and the slack of the film f is prevented when the tubular film f passes through the space between each long side surface 2 a and the first guide plate 12. . The first guide plate 12 has chamfered rear corners at both ends.
Hem sealers 13 and 13 are disposed on both sides of the first guide plate 12 as heaters, respectively, and can be advanced and retracted with respect to the hem flaps h1 and h2 of the tubular film f protruding from the first guide plate 12. The hem sealers 13 and 13 can move in the extending direction of the bag-making tube 2 and can advance and retreat in the horizontal direction toward the hem flaps h1 and h2.
Further, the second guide plates 14 and 14 are fixedly disposed facing the short side surfaces 2b and 2b of the bag-making tube 2, and the cylindrical film f passes through the space between each short side surface 2b and the second guide plate 14. In addition, the occurrence of sagging of the film f is prevented. Moreover, for example, a tapered R-shaped protrusion 14a is formed at the upper end of the second guide plate 14, and protrudes upward so as to enter and overlap between the overhanging guides 4a, 4a of the hem flap forming mechanism 4 described above (FIG. 2 ( b) and FIG. 4). Therefore, the hem flaps h1 and h2 are formed by passing the rectangular tubular film f through the overhanging guides 4a and 4a and the protrusion 14a of the second guide plate 14, respectively.
The second guide plate 14 (the portion of the protrusion 14a at the same height as the hem sealer 13) is formed to have a width smaller than the short side surface 2b, and the rear corners at both ends thereof are chamfered. The receiving portions 15 and 15 for the film f are disposed on both sides of each second guide plate 14 so as to be separated from the second guide plate 14.

Each receiving part 15 is formed in a taper shape tapered toward the short side surface 2b. The side surface on the second guide plate 14 side of the receiving portion 15 is an inclined surface along the chamfered portion of the second guide plate 14, and the side surface facing the hem sealer 13 is a flat surface positioned as an extended surface of the long side surface 2 a. At the time of heat sealing, the hem sealer 13 and the hem flap h1 or h2 are sandwiched and heat sealed to form the hem h.
Each receiving portion 15 can be moved up and down along the bag making tube 2 integrally with the hem sealer 13, and is lowered while sandwiching the hem flap h <b> 1 or h <b> 2 together with the hem sealer 13, so that the film f is fed downward while being heat-sealed. It will be.

Next, the hem seal mechanism 5A and the moving mechanism 5B will be described.
3 to 5, the frame 18 provided in the bag making and filling apparatus 1 is provided with two support columns 19, 19, and a holding frame 20 having a substantially U-shape in plan view moves up and down on these support columns 19, 19. Installed as possible. A guide shaft 21 extending in the horizontal direction is attached to the two arms of the holding frame 20, and the guide shaft 21 has frame portions 22, 22 that are substantially U-shaped in plan view on both sides of the bag-making tube 2. It is mounted oppositely. Each frame portion 22 can be adjusted by sliding along the guide shaft 21 and can be fixed at an arbitrary position by tightening the gripper 23a.
A shaft 24 is rotatably supported on the two arms of each frame portion 22, and a male screw portion 24 a is formed on each shaft 24. A female screw portion connected to each bracket 25 is screwed to each male screw portion 24 a. Are combined. Each bracket 25 is slidably supported by support shafts 26 and 26 provided on the frame portion 22 substantially in parallel with the shaft 24. By rotating the handle 27 provided at one end of the shaft 24, the brackets 25 screwed to the shafts 24 approach or separate from each other. Each bracket 25 can be fixed at an arbitrary position by tightening the gripper 23b.

Each bracket 25 is fixed with a stay 28 and a substantially U-shaped fixed angle 29, and the above-described film f receiving portion 15 is fixed to the stay 28. A rotating shaft 30 that can be rotated by the motor M1 is supported on the fixed angle 29, and a substantially U-shaped movable angle 31 is screwed to the male screw portion formed on the rotating shaft 30 with the female screw portion. The hem sealer 13 described above is fixed to the movable angle 31, and the hem sealer 13 is moved toward and away from the fixed angle 29 by the forward and reverse rotation of the motor M1, whereby the hem sealer 13 is moved to the hem flap h1 or h2. The hem flaps h1, h2 or the hem h are released by being sandwiched between the receiving portion 15 and heat-sealed or separated from the receiving portion 15.
The hem seal mechanism 5A has the above-described configuration.
Further, by moving the frame portions 22 and 22 back and forth along the guide shaft 21, the pair of hem sealers 13 and receiving portions 15 (in the direction of the long side surface 2a) with the bag making tube 2 sandwiched according to the size of the gusset bag F )) The interval can be adjusted. In this case, the holding intervals of the first and second guide plates 12 and 14 that are fixedly held can be similarly adjusted. In addition, the distance between the pair of hem sealers 13 and the receiving portion 15 (in the direction of the short side surface 2b) can be adjusted by adjusting the brackets 25, 25 that are respectively screwed to the pair of shafts 24 to move toward and away from each other. ing. These constitute an adjusting mechanism.

A drive motor M <b> 2 for moving the holding frame 20 up and down is attached to the frame 18 below the holding frame 20. A lever 33 is fixed to the output shaft of the drive motor M2 so as to rotate integrally therewith, and a crank lever 34 is rotatably connected to a free end of the lever 33. The other end of the crank lever 34 is rotatably supported by the holding frame 20.
Therefore, the holding frame 20 is moved up and down with a stroke of a predetermined length via the lever 33 and the crank lever 34 by one rotation of the drive motor M2. As the holding frame 20 moves down, the four hem flaps h1 and h2 are respectively clamped by the four hem sealers 13 and the receiving portion 15, and the rectangular tubular film f is fed downward by a predetermined length while being heated and sealed. In the ascending motion, the hem sealer 13 and the receiving part 15 are moved to the upper end position while the hem sealer 13 is separated from the hem h and the receiving part 15 through the movable angle 31 by the motor M1.
The moving mechanism 5B has the above-described configuration.

The bag making and filling apparatus 1 according to the present embodiment has the above-described configuration. Next, a method for manufacturing the gusset bag F including a method for forming the hem h will be described.
1 and 6, the bag making tube 2 and the bag making guide 3 are selected according to the size of the gusset bag F to be manufactured, and each of the first and second guide plates 12 selected according to the bag making tube 2 is selected. , 14, the hem sealer 13 and the receiving portion 15 are set at appropriate positions.
1 and 4, a continuous belt-like film f fed out from a film roll (not shown) is folded by a bag-making guide 3 provided on the upper portion of the bag-making tube 2 and is substantially passed through a gap with the bag-making tube 2. It is formed into a rectangular tube shape and intermittently conveyed downward along the bag making tube 2 by the moving mechanism 5B.

In the hem flap forming mechanism 4, the overhanging guides 4 a and 4 a provided on the pair of long side surfaces 2 a and 2 a protrude on both sides on the same plane when the rectangular film f is conveyed. The film f is widened in the direction of the long side surfaces 2a and 2a according to the overhanging guides 4a and 4a (see FIG. 2A). Moreover, as shown in FIGS. 2 (b) and 6, since the protrusion 14a of the second guide plate 14 enters between the overhanging guides 4a, 4a, the overhanging guides 4a, 4a and the overhanging guides 4a, 4a The hem flaps h1 and h2 protrude from the four corners of the rectangular tube-shaped film f by the interaction with the projection 14a of the second guide plate 14.
Moreover, the rectangular tube-shaped film f is pressed against the long side surface 2a and the short side surface 2b by the first and second guide plates 12 and 14, and each surface of the rectangular tube-shaped film f passes through without sagging.
In addition, as shown in FIG. 2A, both end edges of the rectangular cylindrical peripheral surface of the film f protrude to overlap one corner of the bag-making tube 2 to constitute a hem flap h2.

Then, each of the four hem flaps h1 and h2 is driven by each motor M1 of the hem seal mechanism 5A in the raised position to rotate the rotating shaft 30, and the movable angle 31 screwed to the rotating shaft 30 moves horizontally. Then, the hem sealer 13 is pressed against the side surface of the receiving portion 15 via the hem flap h1 or h2, and is heat-sealed. At this time, the first guide plate 12 does not interfere with the advanced hem sealer 13 because both ends are chamfered.
The drive motor M2 is driven in a state where the hem flaps h1 or h2 are sandwiched between the hem sealers 13 and the receiving portions 15, respectively. Then, the lever 33 rotates integrally with the output shaft, and the holding frame 20 is moved down along the columns 19 and 19 via the crank lever 34 that swings in conjunction with the output shaft. As a result, the hem sealers 13 and the receiving portions 15 sandwich the hem flaps h1 and h2 and heat-seal, pulling the substantially square tubular film f downward to transport the film f by a predetermined length.

Then, the heat sealing of the hem flaps h1 and h2 is completed at the position where the lever 33 rotates 180 ° from the uppermost end and the holding frame 20 reaches the lowermost end, and each is formed as a hem h. At this time, the motor M1 is reversely rotated and moved in a direction away from the receiving portion 15 through the movable angle 31 via the rotating shaft 30 that rotates in the reverse direction. Thus, each hem sealer 13 is separated from the hem h, and the hem h is released. Thereafter, the holding frame 20 moves upward as the hem sealers 13 are separated from the hems h and the receiving portions 15 by the rotation of the drive motor M2. Then, the holding frame 20 returns to the ascending position, leaving behind the substantially square tubular film f. At this time, the tapered receiving portion 15 rises along both ends of the second guide plate 14 together with the hem sealer 13.
It is not always necessary for the hem seal mechanism 5A to start the heat sealing by holding the hem flaps h1 and h2 at the uppermost end position of the holding frame 20, and open the hem flaps h1 and h2 at the lowermost position of the holding frame 20 for heating. There is no need to terminate the seal. The film feed length is determined by the distance between the position where the hem flaps h1 and h2 start to be sandwiched and the position where the hem flaps h1 and h2 are opened.

After forming the hem h at the four corners of the rectangular tube film f and feeding the rectangular tube film f, the gusset claw 8 is advanced in FIG. 1 to fold the lower end of the rectangular tube film f into a flat plate shape. Further, the upper and lower portions of the gusset bag F are sealed in the horizontal direction by the horizontal sealer 9 below the gusset claw 8, and the middle of the obtained horizontal seal portion is cut in the horizontal direction by the cutter 10.
As a result, the preceding gusset bag F is manufactured, and the next gusset bag F located at the upper portion thereof is sealed at the bottom seal portion s1 and the upper portion is opened. Then, in the hem manufacturing section 6, the gusset bag F is lowered by a predetermined length while holding the hem flaps h 1 and h 2 again with the hem sealer 13 and the receiving section 15 and heat-sealing as described above. And so on.
By repeating such an operation, gusset bags F in which hems h are formed at respective corners are sequentially manufactured while the film f is moved intermittently.

As described above, the bag making and filling device 1 for the gusseted bag F according to the present embodiment is pulled out downward while holding the hem flaps h1 and h2 with the hem sealer 13 and the receiving portion 15 instead of the feeding belt and heat-sealing. Therefore, even if the feeding resistance occurs due to the heat of the overhanging guide 4a or the heat seal, the film f can be unwound accurately and accurately, and the malfunction of the gusset bag F can be prevented because there is no problem such as slipping. .
Moreover, the first and second guide plates 12 and 14 are fixedly arranged facing each other on the long side surface 2 a and the short side surface 2 b of the bag-making tube 2, and the receiving portions 15 are arranged separately on both sides of the second guide plate 14. As the hem sealer 13 is moved up and down, each surface of the substantially rectangular tube-shaped film is not slackened by the guide plates 12 and 14, and only the hem flaps h1 and h2 can be projected, and the hem flaps h1 and h2 are sandwiched. Clean and reliable.
In addition, by using the motor M1 as a driving source for the hem sealer 13, the timing of holding and releasing the hem flaps h1 and h2 by all the hem sealers 13 and the receiving portions 15 can be synchronized, so that the film f is not displaced and is defective. Does not occur. Further, since the feeding belt is not provided, the height of the bag making and filling device 1 is reduced, and the size of the device can be reduced.

In the above-described embodiment, the gusset bag F is formed in a rectangular tube shape having a substantially square cross section, but the gusset bag manufactured according to the present invention is not limited to this, and various polygonal tube shapes, It can be used as a bag making device for a gusseted bag F having an appropriate shape such as a substantially cylindrical shape or an elliptical cylindrical shape. For example, as shown in FIG. 7, the gusset bag F may be formed in a substantially flat cross section, and hems h may be formed at two corners on both sides.
In the above embodiment, the lever 33 is rotated by the rotation of the motor M2 to perform the heat sealing of the hem flaps h1 and h2 and the film feed. Instead, the lever 33 is swung by a predetermined angle. In this case, a swing mechanism for heating and sealing the hem flaps h1 and h2 may be adopted. In this case, the length of the gusset bag F can be changed by changing the swing angle or swing angle of the lever 33 to adjust the vertical movement stroke of the hem seal mechanism 5A.
In the above-described embodiment, the hem flaps h1 and h2 are sandwiched between the hem sealer 13 and the receiving part 15. However, the receiving part 15 may also be constituted by a heater, and the arrangement of the hem sealer 13 and the receiving part 15 is set in reverse. Then, the receiving portion 15 may be moved forward and backward by the motor M1.
In the above-described embodiment, the second guide plate 14 and the pair of receiving portions 15 and 15 are separated from each other and arranged in the same plane, and only the pair of receiving portions 15 and 15 are configured to move up and down. The second guide plate 14 and the pair of receiving portions 15, 15 may be integrally formed and moved up and down in synchronization with the hem sealer 13. In this case, the hem flaps h1 and h2 are formed by pressing one surface of the rectangular tube-shaped film f between the short side surface 2b during the upward movement.

(A) is the schematic which shows the principal part structure of a bag making filling apparatus, (b) is a perspective view which shows the gusset bag obtained with the bag making filling apparatus. (A) is a horizontal sectional view which shows the hem flap formation mechanism in a hem manufacturing part, (b) is a horizontal sectional view in the 2nd guide part upper end similarly. It is a principal part front view which shows the film moving mechanism in a hem manufacturing part. FIG. 4 is a side view of FIG. 3. It is a principal part horizontal sectional view of the hem seal mechanism in a hem manufacturing part. It is an enlarged view of the hem formation mechanism part in the hem manufacturing part of FIG. It is a figure which shows the modification of a gusset bag.

Explanation of symbols

1 Bag making and filling equipment (bag making equipment)
2 Bag making tube 3 Bag making guide 4 Hem flap forming mechanism 4a Overhang guide 5B Moving mechanism 6 Hem manufacturing part 12 First guide part (wrapping material holding guide)
13 Hemsila 14 Second guide (wrapping material guide)
14a Protrusion (wrapping material guide)
15 Receiving part M1 Motor F Gusset bag (bag)
f Film, rectangular tube film (packaging material)
h1, h2 hem flap h hem

Claims (2)

The packaging material is inserted into the bag making tube to form a cylindrical packaging material, and the overhang guide protruding from the corner of the side surface of the bag making tube and the side surface of the bag making tube are sandwiched between the packaging material A bag-making apparatus with a hem that forms a hem flap by projecting the side surface of the cylindrical packaging material by the packaging material guide arranged in the above, and heat-seals the hem flap to form a hem on the side surface of the cylindrical packaging material. In
Forming the hem sealer and the receiving part in a state where the hem flap is sandwiched between the hem flap formed on the side surface of the cylindrical packaging material and heated and sealed to form a hem, and the hem flap is sandwiched between the hem sealer and the receiving part. A moving mechanism for feeding the packaging material by moving along the tube,
The packaging material guide is disposed between the overhanging guides and is provided in a stationary state so as to partially overlap the overhanging guide in the feeding direction of the cylindrical packaging material, thereby forming the hem flap, The bag-making apparatus with a hem is characterized in that the receiving portion is disposed on both sides so as to be movable along the bag-making tube while sandwiching the hem flap together with the hem sealer and heat-sealing . The bag making apparatus with a hem according to claim 1, wherein the driving source of the hem flap or the movement toward and away from the hem is a motor.

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