JPH0620898B2 - Adhesion device for long film and tape - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a long film and a tape in which a tape for opening is cut and welded at regular intervals to a long film to be a packaging film for processed foods, for example. And a welding device.

[Conventional technology]

In general, processed foods such as sausages and stick cheeses are wrapped around a packaging film of vinylidene chloride resin, and both ends of the packaging film are ligated with aluminum wires or the like. Conventionally, this type of processed food has been inconvenient because a knife or the like is required when opening the packaging film. There is also a case where a cut tape for opening the film is attached to the packaging film, but since this cut tape is conventionally provided continuously in the longitudinal direction of the stick-shaped processed food, pull out the cut tape with your fingers. When this happens, there is a drawback that the processed food is deformed and the packaging film cannot be reliably torn.

Therefore, one of the applicants of the present invention has filed an application for a package shown in FIGS. 11 to 14 as Japanese Patent Application No. 60-186182.

In the invention according to this prior application, a strip-shaped opening cut tape 2 is welded to a part of a packaging film 1 for wrapping a processed food such as sausage by a partial welding portion 3. When the sausage or the like is packaged, the packaging film 1 is rolled into a tubular shape and welded by the seal wire 1a. The processed food is squeezed at both ends in the longitudinal direction, the packaging film 1 is squeezed, and ligated with a metal wire 4 such as an aluminum wire.

In this wrapping mode, when the wrapping film 1 is peeled off, when the tip of the cut tape 2 is pinched and pulled by a finger as shown in FIG. 13, the wrapping film 1 is pulled from the tip of the welded portion 3 as shown in FIG. It tears and the packaging film 1 comes off easily.

[Problems to be Solved by the Invention]

In the above-mentioned package manufacturing section, the packaging film 1 is usually continuously supplied at a constant speed, the film is formed into a tubular shape and sealed with the seal line 1a, the contents are filled, and the ironing work is further performed. Then, the ligation work with the wire 4 is continuously performed.

In the case of the conventional example in which the cut tape is continuously provided in the longitudinal direction of the stick-shaped package, the cut tape is continuously supplied and, as described above, the cut tape is continuously fed at a constant speed. It is possible to combine this cut tape with the packaging film sent by the method and continuously weld the packaging film and the cut tape. Therefore, in this case, the feeding speed of the packaging film to the packaging manufacturing section does not change.

However, as shown in FIGS. 13 and 14, when the strip-shaped cut tape 2 is intermittently welded to the packaging film 1 at a constant pitch, the cut tape 2 is separated from the continuous tape and welded. Therefore, at the time of welding the cut tape 2 cut to the packaging film 1, the feeding speed of the packaging film 1 is intermittently changed,
For example, it is necessary to intermittently stop the feeding of the packaging film 1.

However, in order to weld the cut tape 2 intermittently,
When the feeding speed of the packaging film 1 is changed, a new problem arises that the feeding speed of the packaging film is lost between the packaging film and the packaging body manufacturing section.

The present invention is to solve the above-mentioned conventional problems, and
When welding a short cut tape as shown in Fig. To Fig. 14 to a packaging film, it is possible to solve the discontinuity of the film feeding speed between the welded part of the cut tape and the packaging manufacturing part. It is an object of the present invention to provide a welding device for a tape and a tape.

[Means for Solving the Problems]

The welding device for a long film and a tape according to the present invention has a take-up means for continuously taking the long film,
A package manufacturing unit for continuously manufacturing a tubular package in which the both ends are sealed and the both ends are sealed, a feed roller that continuously feeds the long film, and a position between the feed roller and the take-up unit. do it,
A welding mechanism that intermittently supplies the cut tape to weld the long film at a predetermined pitch, and a long film in order to make the relative speed between the long film and the welding mechanism at the time of tape welding almost zero. A tape welding unit having a speed adjusting unit for changing the feeding speed, a long film is hung between the feeding roller and the tape welding unit, and between the tape welding unit and the take-up means. First moving in opposite directions to the slack direction and the tension direction of the long film in accordance with the change in the speed of the long film when the relative speed between the long film and the welding mechanism is made substantially zero at the welding portion. And a second adjusting roller are provided.

[Action]

In the above means, in the packaging manufacturing section, while the long film is continuously taken at a constant speed, this film is formed into a tubular shape, and the tubular packaging film is filled with the contents,
The packaging film filled with the contents is sealed by ligation or the like. In the tape welding portion, the relative speed between the long film fed and the welding mechanism is adjusted, and the cut tape and the long film are intermittently welded. At this time, fluctuations in the feeding speed of the long film between the feeding roller for feeding the long film and the tape welding portion, and between the tape welding portion and the packaging body manufacturing portion are caused by the mutual fluctuation of the first and second adjusting rollers. It is absorbed by the reverse motion. By providing this speed adjusting roller, the package manufacturing section can continuously manufacture the package.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows the outline of the structure of the entire apparatus, and FIG. 2 is a right side view showing the tape welding portion of these.

Reference numeral A indicates a tape welding portion. A film supply unit B for supplying the long film 1 is provided in the front stage of the tape welding unit A, and a package for manufacturing a package such as sausage filled with processed meat is provided in the rear stage of the tape welding unit A. A manufacturing department C is provided.

The film supply section B is composed of feed rollers 11a and 11b for continuously feeding the long film 1 extending from the original fabric, and a large number of rollers for guiding the long film 1 to the tape welding section A. Further, the film supply section B is provided with a tension adjusting mechanism 12. This tension adjusting mechanism 12
Is a swing link 12a that is swingably supported, and an adjusting roller 12b that is supported by this swing link 12a.
And 12c. In the tape welding portion A, the long film 1 is intermittently delivered by a predetermined length. On the other hand, the feed rollers 11a, 1
In 1b, since the long film 1 is continuously sent out,
A difference in tension of the long film 1 due to the continuous feeding and the intermittent feeding at the tape welding portion A is caused by the swing link 12a.
It is designed to be absorbed by the vertical movement of the robot by its own weight.

In addition, the package manufacturing unit C includes a molding member 13 for molding the long film 1 after the strip-shaped tape 2 is welded in the tape welding unit A into a tubular shape, and a long film formed into a tubular shape. It has a sealing mechanism that seals to form the sealing line 1a shown in FIG. 12, and a filling member 15 that fills processed meat or the like through the filling cylinder 14. When the long film 1 is formed into a tubular shape, the filling member 15 fills the film 1 with processed meat or the like. Thereafter, the ironing roller 16 intermittently squeezes the squeezed portion, and the squeezed portion is ligated and sealed with a metal wire 4 such as an aluminum wire,
Further, it is cut off by the cutting section 17 to continuously manufacture a package such as sausage.

Between the package manufacturing section C and the tape welding section A, the long film 1 is guided by a large number of rollers. In the packaging body manufacturing section C, the long film 1 is taken up by the take-up rollers 18, 1.
It is picked up by 8 and sent out continuously. Therefore, the speed adjusting mechanism 19 is arranged between the tape welding part A and the package manufacturing part C. This speed adjustment mechanism 19
Is a swing link 19a swinging by its own weight, and speed adjusting rollers 19b, 19c, 19d supported by the swing link 19a.
It consists of and.

Here, the long film 1 is continuously fed from the film supply section B by the feed rollers 11a and 11b,
Further, while the long film 1 is continuously taken up by the take-up rollers 18 and 18 in the packaging body manufacturing section C,
In the tape welding part A located between the film supply part B and the package manufacturing part C, the long film 1 is intermittently fed. Therefore, the adjusting roller 12b of the tension adjusting mechanism 12 at the front stage,
12c and the speed adjusting roller 1 of the speed adjusting mechanism 19 in the subsequent stage.
9b, 19c and 19d operate in the opposite directions to the slack direction and the tension direction of the long film in accordance with the change of the feeding speed of the long film 1 in the tape welding portion A.

Next, the structure of the tape welding portion A will be described in more detail.

FIG. 3 is an enlarged front view of the tape welding portion A, FIG. 4 is a sectional view taken along line IV-IV of FIG. 3, and FIG. 5 is a sectional view taken along line VV of FIG. The figure is a view from the arrow VI in Fig. 3 (left side view).
Is.

The tape welding portion A is composed of parts arranged inside and outside the right side plate 21 and the left side plate 22 which are provided in parallel with each other and in the periphery thereof. As shown in FIG. 2, both side plates 21 and 22 have a notch (a) at the upper rear part of the apparatus, and the long film 1 guided from the film supply section B has this notch (a). ) It is designed to pass over. As shown in FIG. 1, a guide roller 23 is provided above the outside of the left side plate 22, and a film feed roller 24 and a pinch roller 25 that is pressed against the film feed roller 24 are provided above the outside of the right side plate 21. ing. The film feed roller 24 is connected to a clutch brake 26 that constitutes a speed conversion unit by a toothed belt or the like, and is further connected to a motor M. The power of the motor M is intermittently transmitted to the film feed roller 24 by the clutch brake 26, and the long film 1 is intermittently fed to the right direction in the drawing of FIG. 1 by a predetermined length. Also, the clutch brake 26
By changing the timing of 1
You will be able to set the feed length for each operation.

As shown in FIGS. 2 and 3, the side plates 21 and 2 are
A drive shaft 31 is supported between the two right side plates 2
A sprocket 32 is fixed to the end portion protruding from 1. As shown in FIG. 2, the sprocket 32 is
Is connected to a drive sprocket 34 by a chain 33. The drive sprocket 34 is connected to a motor common to the whole processing apparatus shown in FIG. 1, and the drive shaft 31 is continuously driven to rotate clockwise in FIG. 2 by the power of this motor. ing.

As shown in FIG. 2, a support shaft 37 is provided in front of each of the side plates 21 and 22, and the tape 2 is attached to the support shaft 37.
The original fabric 2a is supported. The tape 2 extending from the original 2a is guided by the guide roller 40 to the side plates 21 and 2
It is sandwiched between a tape feed roller 35 which is guided between the two and provided inside both side plates 21 and 22 and a pinch roller 36 which presses against the tape feed roller 35, and intermittently reaches a position facing the lower surface of the long film 1. It is supposed to be sent out.

As shown in FIG. 4 (IV-IV sectional view of FIG. 3), the mechanism for driving the tape feed roller 35 includes the right side plate 21.
Is located outside of. The shaft 35a of the tape feed roller 35 is supported by both side plates 21 and 22 (third part).
See figure). The right end of the shaft 37 projects outside the right side plate 21, and a one-way clutch 38 is provided at the right end. The fulcrum shaft 39 is provided outside the right side plate 21.
Is provided, and a drive link 41 is rotatably supported on the fulcrum shaft 39. One arm 41 a of the drive link 41 is connected to the one-way clutch 38 via a connecting bar 42. A follow roller 43 is supported on the other arm 41b of the drive link 41. A spring 44 is hung between the tip of the arm 41b and the right side plate 21.
Thus, the drive link 41 is biased clockwise in FIG. The follow roller 43 is caused by this biasing force.
Is pressed against the first cam 45. This first cam 45
Is fixed on the drive shaft 31 at a position aligned with the sprocket 32.

When the drive shaft 31 is driven counterclockwise in FIG. 4 by the sprocket 32, the follow roller 43
Is the maximum diameter locus 45a and the minimum diameter locus 45 of the first cam 45.
It is lifted and lowered within the dimension of b, and the drive link 41 swings accordingly. This operation is transmitted to the tape feed roller 35 via the one-way clutch 38, and the tape feed roller 35 is intermittently driven only in the counterclockwise direction in FIG. 4, that is, in the tape 2 feed direction.

A support shaft 47 of the pinch roller 36 is connected to the tip of a roller link 49. As shown in FIG. 4, the base end of the roller link 49 is supported by the side plates 21 and 22 by a shaft 51. The roller link 49 is biased by the force of the spring 52, and the pinch roller 36 is pressed against the tape feed roller 35 by this force. A handle 53 is fixed to the shaft 51, and the pinch roller 36 can be artificially separated from the tape feed roller 35 by operating the handle 53.

As shown in FIG. 5 (V-V sectional view), both side plates 21 and 2
In the upper position between the two, the lower guide 55 and the upper guide 56
Is provided. The tape 2 which is intermittently fed by the tape feeding roller 35 passes between the upper and lower guides 55 and 56, and goes to a position facing the lower surface of the long film 1 introduced into the notch (a). You will be guided.

Further, as shown in FIG. 5, a lower electrode 61 that moves up and down is provided between the side plates 21 and 22. The lower electrode 61 serves as a negative electrode for welding the long film 1 and the tape 2 at a high frequency. Lower electrode 61
The tape pressing surface 61a is formed higher on the upper surface of the blade, and the cutter blade 61b is formed on the right edge of the drawing.
Are integrated. When the lower electrode 61 rises, the tape 2 is cut into strips by the cutter blade 61b and the tip surface of the upper guide 56. Also,
An air lead-out hole 61c is provided in the lower electrode 61, and an air suction device 65 is connected to the air lead-out hole 61c via an automatic valve 64. As shown in FIG. 7 (a perspective view showing the tape welding portion), a tape suction hole 61d is formed in the tape pressing surface 61a. When the valve 64 is opened, the tape suction hole 61d functions to suck the tape 2.

A clamp member 62 is supported on the lower electrode 61 slidably in the vertical direction, and the clamp member 62 is biased upward by the spring 63 with respect to the lower electrode 61. When the lower electrode 61 rises, the clamp member 62 first comes into pressure contact with the upper guide 56 to clamp the tape 2.

The lower end of the lower electrode 61 is connected to the elevating shaft 66. The elevating shaft 66 is slidably supported by a bearing 67 provided between the side plates 21 and 22. Lifting shaft 66
The lower end of is connected to the drive link 68. This drive link 68 is provided with a shaft 69 extending over the side plates 21 and 22.
It is rotatably supported by. A follow roller 71 is supported by the drive link 68, and the drive link 68 is biased clockwise by a spring 72 in FIG. The follow roller 71 is pressed against the second cam 73 by this biasing force. The second cam 73 is fixed to the drive shaft 31.

When the drive shaft 31 is driven counterclockwise in FIG. 5 by the sprocket 32, the follow roller 71
Is the maximum diameter locus 73a and the minimum diameter locus 73 of the second cam 73.
It is driven up and down within the dimension of b. In response to this, the drive link 68 swings, and the lower electrode 61 is driven up and down.

As shown in FIGS. 3 and 5, the lower electrode 61
The upper electrode 81 is opposed to the above. This upper electrode 8
Reference numeral 1 is a positive electrode for high frequency welding. The lower surface of the upper electrode 81 serves as a protruding pressing portion 81a. The welding portion 3 (see FIG. 11) of the long film 1 and the tape 2 is determined by the shape of the pressing portion 81a. As shown in FIG. 7, in this embodiment, the pressing portion 81a has an elongated shape having sharp corners at both ends.

The upper electrode 81 is held by the holding member 82. A shaft 83 is provided on the holding member 82, and the shaft 83 is slidably held by the electrode holder 84. A spring 85 for a damper is provided on the outer circumference of the shaft 83.

As shown in FIG. 6 (a view from the arrow VI in FIG. 3), a mechanism for moving up and down the electrode holder 84 is provided outside the left side plate 22. The lower end of the electrode holder 84 is connected to the elevating shaft 95. The lifting shaft 95 is slidably supported by a bearing portion 86 provided on the left side plate 22. Lifting axis 9
The lower end of 5 is connected to a drive link 88 via a connecting bar 87. The drive link 88 is rotatably supported by a shaft 89 provided on the left side plate 22. A follow roller 91 is supported by the drive link 88, and the drive link 88 is biased counterclockwise in FIG. 6 by a spring 92. The follow roller 91 is pressed against the third cam 93 by this urging force. The third cam 93 is fixed to the drive shaft 31.

When the drive shaft 31 is driven counterclockwise in FIG. 6 by the sprocket 32, the follow roller 91
Is the maximum diameter locus 93a and the minimum diameter locus 93 of the third cam 93.
It is driven up and down within the dimension of b. In response to this, the drive link 88 swings, the electrode holder 84 is driven up and down, and further the upper electrode 81 moves up and down.

Next, the operation will be described.

FIG. 7 is a perspective view showing a portion where the tape 2 cut into strips is welded to the long film 1,
FIG. 8 is a time chart showing the operation timing of each member.

The long film 1 sent from the film supply section B is guided to the notch (a) of each side plate 21 and 22 of the tape welding section A and stretched between the guide roller 23 and the film feed roller 24. It The film feed roller 24 is intermittently driven by the timing of a clutch brake 26 (see FIG. 1) which is a speed conversion unit, and the long film 1 is fed out by a predetermined length in the arrow direction in FIG. The long film 1 is stopped at that position for a predetermined time.

Meanwhile, the power is continuously transmitted to the sprocket 32 by the chain 33 (see FIG. 2), and the drive shaft 31 is continuously driven to rotate. Then, according to the shapes of the first cam 45, the second cam 73, and the third cam 93 fixed to the drive shaft 31, each member is driven in conjunction with each other at the timing shown in the time chart of FIG.

First, the rotation of the first cam 45 is changed to the swing of the drive link 41, and this operation is transmitted to the one-way clutch 38, and the tape feed roller 35 is driven intermittently. As a result, the tape 2 extending from the original fabric 2a (see FIG. 2) is fed between the lower guide 55 and the upper guide 56, and when the feeding of the long film 1 is stopped, the leading end of the tape 2 is lowered by a certain amount. The electrode 61 projects above the electrode 61 and faces the lower surface of the long film 1. In this state, tape feeding is stopped for a fixed time.

In addition, the second cam 7 provided between the side plates 21 and 22.
The rotation of 3 is changed into the swinging motion of the drive link 68 shown in FIG. 5, and the lower electrode 61 is driven up and down via the lifting shaft 66. On the other hand, the rotation of the third cam 93 provided on the outer side of the left side plate 21 is converted into the swing motion of the drive link 88, and the electrode holder 84 is driven up and down via the lifting shaft 95. As shown in FIG. 8, the second cam 73 and the third cam 93
Due to the shape, the lower electrode 61 moves up and at the same time the electrode holder 84 moves down at a timing after the feeding of the long film 1 is stopped and the feeding of the tape 2 onto the lower electrode 61 is stopped. When the lower electrode 61 rises, first, the tip of the tape 2 is moved to the upper guide 56 by the clamp member 62.
Is clamped by being pressed against the lower surface of the tip of the. The lower electrode 61 rises later than the clamp member 62, and when ascending, the cutter blade 61b provided on the edge portion of the upper surface of the lower electrode 61 and the tip edge portion of the upper guide 56 are aligned, and the tape 2 is stripped. Is cut into a shape.

Further, as shown in FIG. 8, the automatic valve 64 (see FIG. 5) is opened for a certain time before and after the lower electrode 61 starts to rise, and the air suction device 65 causes the tape suction hole 61d on the upper surface of the lower electrode 61 to open. Air is sucked in. This suction force causes the tip of the tape 2 to move toward the cutter blade 61b.
It is held by the lower electrode 61 immediately before being cut by. Therefore, the tape 2 cut into strips rises while being held by the lower electrode 61 by air adsorption, and when the lower electrode 61 rises to the top dead center, the strip-shaped tape 2 is attached to the lower surface of the long film 1. To be On the other hand, when the upper electrode holder 84 descends, the pressing portion 81a of the upper electrode 81 held by the upper electrode holder 84 causes the long film 1 and the strip-shaped tape 2 to press the pressing surface 61a of the lower electrode 61.
Pressed against. Then, a high frequency is applied to both electrodes 61 and 81, and the strip-shaped tape 2 is welded to the long film 1. The automatic valve 64 is closed in the middle of this sealing operation, and suction by air is stopped.

After that, the lower electrode 61 and the upper electrode 81 are separated from each other at the timing of the cams 45, 73, and 93. And
In addition to sending out a certain amount of long film 1,
The leading end of the tape 2 is fed again, and the above operation is continuously performed.

By the above operation, with respect to the long film 1 sent,
As shown in FIG. 9, the strip-shaped tapes 2 are welded at regular intervals. The shape of the welding portion 3 between the long film 1 and the strip-shaped tape 2 is the same as the pressing portion 8 of the upper electrode 81.
This is due to the shape of 1a, and in the illustrated embodiment, the elongated tape-shaped tape 2 is provided with the elongated welded portion 3 at the center thereof.

In the apparatus shown in FIG. 1, the long film 1 to which the strip-shaped tape 2 is welded at the tape welding portion A is sent to the packaging body manufacturing section C, and the processed meat is filled by the packaging body manufacturing section C. Stick-shaped sausages are produced. In FIG. 9, the portion of length L sandwiched by the alternate long and short dash line is used as a packaging film for wrapping one sausage. Therefore, as shown in FIG. 11, the sausage discharged from the packaging body manufacturing section C has the strip-shaped tape 2 provided only on one end in the longitudinal direction. As described above, if the strip-shaped tape 2 is used as a cut tape and is pulled up,
As shown in FIG. 13 and FIG. 14, the film 1 can be easily peeled off.

Since the shape of the welded portion 3 of the strip-shaped tape 2 and the long film 1 is determined by the shape of the pressing portion 81a of the upper electrode 81, the shape of the pressing portion 81a can be changed to, for example, the tenth A welded portion having a shape indicated by reference numeral 3a in the figure,
Alternatively, it may have any other shape.

Further, it is also possible to shorten the welding interval of the strip-shaped tape 2 to the long film 1 so that the tape 2 is provided at both ends of the sausage. Also long film 1
May be a film for packaging processed foods other than sausage, or a packaging film for wrapping items other than processed foods.

Further, in the illustrated embodiment, since it is assumed that a vinylidene chloride resin film is used as the long film 1, high-frequency welding is adopted as means for welding the strip tape 2, but this welding It can be implemented even if the means is heat welding or the like.

〔The invention's effect〕

 The present invention has the following effects.

(1) Since the long film is continuously fed out by the feed roller and the long film is continuously taken up by the take-out means in the packaging body manufacturing section, the long film always runs at a stable speed in the entire apparatus. become able to. Further, a tape welding portion in which the feeding speed of the long film is changed is provided between the feeding roller and the take-up means. The first and second adjusting rollers are opposite to each other in the front and rear stages of the tape welding portion. Since the speed of the long film changes at the tape welding part, the operation of both adjusting rollers does not impair the stability of the long film speed in the entire device. In addition, it is possible to prevent a large change in tension acting on the long film.
Further, since the long film is stably fed, it is possible to cope with an increase in the number of packages manufactured per unit time.

(2) Since the tape is welded in the tape welding portion by changing the speed of the long film, the welding work between the long film and the tape can be stably performed, and for example, a packaging body such as food packaging. As a result, it is possible to obtain a welding strength that can sufficiently withstand.

[Brief description of drawings]

1 to 8 show an embodiment of the present invention, FIG. 1 is an apparatus configuration diagram showing an outline of the overall structure of the apparatus, FIG. 2 is a right side view of FIG. 1 showing a tape welding portion, FIG. 3 is an enlarged front view showing the tape welding portion, FIG. 4 is a sectional view taken along line IV-IV of FIG. 3,
FIG. 5 is a sectional view taken along line VV of FIG. 3, FIG. 6 is a view as seen from an arrow VI of FIG. 3 (left side view), and FIG. 7 is a partial perspective view showing a welding mechanism portion of a tape welding portion. 8 is a time chart showing the operation timing of each member, FIG. 9 is a plan view showing a state where a strip-shaped tape is welded to a long film, and FIG. 10 is a plan view showing a modification of FIG. Fig. 11 is a front view showing a case where it is used as a packaging film for sausage as an example of using a long film, Fig. 12 is a back view of Fig. 11, and Fig. 13 is a portion of Fig. 11 showing a strip-shaped tape portion. FIG. 14 is an enlarged view showing a state in which the sausage packaging film is peeled off with a strip tape. A: Tape welding part, C: Packaging manufacturing part, 1 ... Long film, 2 ... Tape, 13 ... Molded member, 16 ...
Squeezing rollers 21, 22, ... Side plates of tape welding part, 2
4, 25, M ... Film feeding mechanism, 26 ... Clutch brake as speed converting unit, 31 ... Drive shaft, 45 ...
... First cam for tape feeding operation, 35, 36, 38, 4
1 ... Tape feeding mechanism, 61 ... Lower electrode, 61a ...
Pressing surface, 61b ... Cutter, 61d ... Tape suction hole,
73-second cam for raising the lower electrode, 81-upper electrode, 93-third cam for lowering the upper electrode.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kiyoshi Sawada 432 Mizushima, Oyabe City, Toyama Prefecture (56) Reference JP-A-56-131138 (JP, A)

Claims (1)

[Claims] 1. A packaging body manufacturing section for continuously producing a tubular packaging body filled with contents and sealed at both ends thereof, comprising a take-out means for continuously taking up the long film, and the long film continuously. And a feed roller for sending out, and located between the feed roller and the take-up means,
A welding mechanism that intermittently supplies the cut tape to weld the long film at a predetermined pitch, and a long film in order to make the relative speed between the long film and the welding mechanism at the time of tape welding almost zero. A tape welding unit having a speed adjusting unit for changing the feeding speed, a long film is hung between the feeding roller and the tape welding unit, and between the tape welding unit and the take-up means. First moving in opposite directions to the slack direction and the tension direction of the long film in accordance with the change in the speed of the long film when the relative speed between the long film and the welding mechanism is made substantially zero at the welding portion. And a second adjusting roller, the welding device for a long film and a tape.