JP2001097322A - Method for determining seal failure in filling/packaging bag and apparatus for determining seal failure in filling /packaging bag in filling/packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for determining seal failure in a filling/ packaging bag in a filling/packaging machine, capable of easily determining that contents comprising fluid substances such as a liquid is partly held and remains in a laterally sealed portion of a cylindrical film. SOLUTION: In this method for determining seal failure in a filling/packaging bag and an apparatus therefor, a longitudinally sealing mechanism 5 comprising a pair of longitudinally sealing rolls 5A, which rotate opposingly, effects a longitudinal seal FH to a film F transferred continuously and forms it into a cylindrical shape. AS the film F formed into the cylindrical shape is filled with contents W comprising fluid substances, a laterally sealing mechanism 7 comprising a pair of laterally sealing rolls 7A, which rotate opposingly, effects a lateral seal FS to the cylindrical film F to continuously seal and package the contents W thereinto. Then, on the downstream side of the laterally sealing mechanism 7, which is located in a direction in which the film is transferred, rays of light emitted from a light-emitting means 10 are intermittently projected onto the heated portion of the film F where the lateral seal FS is effected, and the presence of bubbles WB caused by vapor from the contents W remaining in the portion of the lateral seal FS can be determined based on an afterimage phenomenon of the irradiated light rays by intermittent emission.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing failure of a filled packaging bag in which a package made of a fluid substance is filled in a packaging bag while the film is wound into a roll and the packaging bag is sealed. The present invention relates to a determination method and a device for determining a sealing failure of a filling and packaging bag in the filling and packaging machine.

[0002]

2. Description of the Related Art Conventionally, as a filling and packaging machine, for example, Japanese Unexamined Patent Publication No.
As disclosed in JP-A-32929, JP-A-3-176317 or JP-A-4-114484, a film that is continuously transferred is folded in two,
The edges of the film are overlapped and vertically sealed by a vertical sealing mechanism, the contents are supplied into the vertically sealed and cylindrically formed film, and the film is horizontally sealed by the horizontal sealing mechanism to package the contents. Known to do so.

[0003]

FIGS. 8 and 9 show the overall schematic structure of a conventional filling and packaging machine of this type.
FIG. 10 shows a horizontal sealing structure, and FIG. 10 is an enlarged sectional view of the film in a horizontal heat sealing state. Referring to FIG. 1, in a conventional filling and packaging machine, a film F which is continuously transferred is vertically sealed FH by a vertical sealing mechanism 5 including a pair of vertical sealing rolls 5A which rotate in opposition to form the film F into a cylindrical shape. A horizontal seal composed of a sealing plate 7B provided on a pair of horizontal seal rolls 7A rotating opposite to each other while filling a cylindrical film F with contents W composed of a fluid substance such as a liquid. The horizontal seal FS is performed by the mechanism 7, and the contents W are continuously sealed and packaged in the packaging bag P. In this case, the tubular film F is sandwiched between the seal plates 7B of a pair of the horizontal seal rolls 7A arranged opposite to the horizontal seal mechanism 7 and transferred, so that there is a gap between the seal plates 7B of the horizontal seal rolls 7A. Even if the liquid W, which is the content W, is present, the liquid W is applied to the sealing plate 7 of the horizontal sealing roll 7A.
The film F is heat-sealed by being squeezed out by B to form a horizontal seal FS.

However, the liquid W, which is the contents W filled with the packaging film F formed in a tubular shape between the seal plates 7B provided on the pair of horizontal seal rolls 7A, is ironed at a high temperature while performing ironing. In order to perform the horizontal seal FS by thermocompression bonding, appropriate packaging conditions, that is, appropriate film thickness settings based on conditions such as the film transfer speed that differs depending on the product type, the interval between the packaging bags P formed, and the filling amount of the contents W, etc. Although the filling and packaging machine is operated according to the conditions, if the conditions for performing the packaging seal are lost due to external factors such as temperature and humidity in addition to the respective conditions, the horizontal sealing roll The contents W such as a liquid W composed of a flowable substance adhere to the surface of the packaging film F which is heated and melted by receiving the heat of the sealing plate 7B of 7A, and the sealing of the pair of horizontal sealing rolls 7A is performed. Even if ironing is applied while applying pressure by 7B, the contents W such as the liquid W sandwiched between the packaging films F cannot be ironed out, and as a result, a problem of poor sealing of the horizontal seal FS may occur. there were.

[0005] This phenomenon is more likely to appear more remarkably as the transport speed of the packaging film F increases. That is, when the transport speed of the packaging film F is low, the packaging film F that is heated and melted by receiving heat from the sealing plate 7B of the horizontal sealing roll 7A is applied to the sealing plate 7B of the horizontal sealing roll 7A. The time due to the pressure contact is relatively long, and the heat is transmitted to the heat-melting resin layer FR of the packaging film F in an appropriate state and melted, and sufficiently adequate heat sealing is performed over the entire width of the horizontal seal FS portion of the packaging film F. However, as the transfer speed of the film F becomes higher, the sealing plate 7B of the horizontal seal roll 7A is caused particularly by the lack of heat in the respective portions on the front side and the rear side in the rotation direction. Therefore, there is a problem that heat sealing failure, that is, a heat-sealed portion having insufficient sealing strength is generated in the portion of the film F that comes into contact with those portions.

In order to solve this problem, a sufficient heat seal is applied to a portion of the film F which comes into contact with the front and rear portions in the rotational direction of the seal plate 7B of the horizontal seal roll 7A. However, if the material and the seal width of the packaging film F are different, the transfer speed of the packaging film F and the transverse heat sealing can be adjusted according to the respective packaging specifications. It is necessary to set the heating temperature to an appropriate value,
If you deviate from this proper value,
There may be a problem that the amount of heat in the central portion in the circumferential direction of the seal plate 7B tends to be excessive.

That is, when the temperature of the sealing plate 7B provided on the horizontal sealing roll 7A is set to a high enough temperature to cope with the high-speed running of the packaging film F, for example, the transfer speed of the packaging film F becomes equal to the set value. If the speed is lower than the speed, the contact time between the sealing plate 7B of the horizontal seal roll 7A and the film F for packaging becomes longer. As a result, the film F receives a large amount of heat from the sealing plate 7B. In addition, there is a problem that the hot-melt resin layer FR is melted, and the hot-melt resin layer FR is excessively melted in the portion of the film F that comes into contact with the seal plate 7B.

In other words, when the hot-melt resin layer FR is uniformly and properly melted in the entire contact portion between the packaging film F and the sealing plate 7B, the space between the packaging films F is filled. Contents W, for example, liquid W
Is based on the pressing force of the sealing plate 7B on the film F, under the action of the hot-melt resin layer FR having an appropriate viscosity,
The liquid W, which is the content W, is gradually pushed upward while being squeezed, and the remaining of the liquid W between the films F is completely prevented. If the amount is too large, the melt depth of the hot-melt resin layer FR becomes too deep and the melt viscosity of the hot-melt resin layer FR becomes too low, so that the liquid filled between the packaging films F is melted. Due to the action of the resin layer FR, it is impossible to completely remove the resin. Therefore, a part of the liquid W, which is the content W, is mixed with the molten resin component of the hot-melt resin layer FR between the packaging films F. The film F remains and hinders the heat sealing of the packaging film F.

In addition, since the residual liquid W expands as steam immediately after the horizontal heat sealing, bubbles WB expanded by the steam are present at the horizontal sealing portion FS, so that it can be visually recognized from the outside. Although it is relatively easy, the residual liquid W has already cooled and returned to the liquid W when the packaged packaging bag P reaches the inspection process, and it is extremely difficult to visually recognize the residual liquid W from outside. In the inspection process, it is practically impossible to find a heat seal defect.

Therefore, immediately after the horizontal heat sealing, since the horizontal seal FS of the packaging film F is heated, the heated contents W remaining at the horizontal seal FS also become steam. It is relatively easy to confirm from the outside of the film F because it is in the state of the bubble WB after being expanded. Therefore, immediately after the horizontal sealing, the quality of the sealing state of the horizontal seal FS is visually determined immediately after the horizontal sealing. Although a method of locally illuminating the surrounding brightness with a lamp or the like so as to make it easier to see is generally known to improve the determination of the sealing state, Because the film F being transported is visually determined, some people may not be able to confirm due to individual differences in dynamic visual acuity,
There was also a problem that the higher the transfer speed of the packaging film F, the more difficult it was to determine.

SUMMARY OF THE INVENTION The present invention provides a method for judging a sealing failure of a packing bag and a filling and packing machine for easily judging that a content made of a flowable substance such as a liquid remains between horizontal sealing portions. It is an object of the present invention to provide a device for judging a defective sealing of a filling and packaging bag in the above.

[0012]

According to the first aspect of the present invention, a film is formed into a cylindrical shape by vertically sealing a continuously transported film by a vertical sealing mechanism comprising a pair of vertical sealing rolls rotating opposite to each other. Then, while filling the contents formed of a fluid substance into the film formed in a cylindrical shape, the contents are laterally sealed by a horizontal sealing mechanism including a sealing plate provided on a pair of horizontal sealing rolls rotating opposite to each other. Objects are continuously sealed and packaged, and then, on the downstream side in the film transport direction from the horizontal sealing mechanism, the light emitted from the light emitting means is intermittently applied to the heated horizontal sealing portion of the film, and the horizontal This is a method of judging a sealing failure of a filling and packaging bag, which makes it possible to judge the presence / absence of bubbles formed of vapor due to the contents remaining in a sealing portion by an afterimage phenomenon of an irradiation light beam by intermittent light emission.

According to a second aspect of the present invention, in the first aspect, light is emitted in synchronization with an irradiation interval of the intermittent flash light of the light emitting means with respect to a transport speed of the film, and the light remains at a horizontal sealing portion of the film. This is a method of judging a defective sealing of a filling and packaging bag, which makes it possible to judge the presence or absence of bubbles made of vapor due to the contents.

According to a third aspect of the present invention, the film which is continuously transported is vertically sealed by a vertical sealing mechanism comprising a pair of vertical sealing rolls which rotate in opposition to form the film into a cylindrical shape. Filling by filling the contents composed of a fluid substance, while performing horizontal sealing by a horizontal sealing mechanism composed of a sealing plate provided on a pair of horizontal sealing rolls rotating opposite to each other, and sealingly packaging the contents continuously. In the packaging machine, on the downstream side in the film transport direction of a horizontal sealing mechanism including a sealing plate provided on the pair of horizontal sealing rolls,
A light emitting means is provided which enables the presence / absence of bubbles formed of vapor of the content remaining in the horizontal sealing portion of the film heated by the horizontal sealing mechanism to be determined by a residual phenomenon due to intermittent irradiation. This is a device for judging a sealing failure of a filling and packaging bag in a filling and packaging machine.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the light emitting means is configured to be capable of intermittent flashing continuously at a predetermined interval. Is a seal failure determining device.

According to a fifth aspect of the present invention, in the fourth aspect, the light emitting means is provided behind the film to be continuously transferred, and the light beam emitted by the intermittent flash light from the light emitting means is transmitted through the horizontal sealing portion of the film. A sealing failure judging device for a filling and packaging bag in a filling and packaging machine, characterized in that it is possible to determine the presence or absence of air bubbles composed of the vapor of the content remaining in the horizontal sealing portion of the heat-sealed film. .

According to a sixth aspect of the present invention, in the fifth aspect, between the light emitting means and the continuously transported film.
In order to make it easier to read the horizontal sealing portion of the film, a masking means for setting a transmission area of a transmitted light beam from the light emitting means is provided. is there.

According to a seventh aspect of the present invention, in the fourth aspect, the light emitting means is provided on the front side of the film to be continuously transferred, and the horizontal sealing portion of the film is irradiated by intermittent flash light from the light emitting means, and the film is heated and sealed. A sealing failure determination device for a filling and packaging bag in a filling and packaging machine, wherein presence / absence of bubbles formed of vapor due to the contents remaining in the horizontal sealing portion of the film can be determined.

In claim 8, claim 3 to claim 7.
In any one of the above, the irradiation interval by the intermittent flash of the light emitting means is synchronized with the transport speed of the film to enable irradiation of at least a horizontal seal portion of the film, and the content remaining in the horizontal seal portion of the film. This is a device for judging a defective sealing of a filling and packaging bag in a filling and packaging machine by judging the presence or absence of air bubbles composed of vapor of an object.

In claim 9, claim 3 to claim 7.
In any one of the above, a horizontal seal time detecting means for detecting a horizontal seal time in accordance with a rotation operation of the horizontal seal mechanism is provided, and the light emitting means is intermittently determined based on an output signal from the horizontal seal time detecting means. An apparatus for judging a sealing failure of a filling and packaging bag in a filling and packaging machine, wherein an irradiation interval by a flash is set.

According to a tenth aspect, in the ninth aspect,
Control means for setting an irradiation interval by intermittent flash light of the light emitting means after a predetermined time based on an output signal from the horizontal seal time detecting means, and a sealing failure of the filling and packaging bag in the filling and packaging machine, It is a discriminating device.

According to an eleventh aspect, in any one of the third to seventh aspects, the film is provided with a registration mark, and the registration mark formed on the film at an appropriate position of the filling and packaging machine is detected. Registration mark detection means;
An apparatus for judging a sealing failure of a filling and packaging bag in a filling and packaging machine, wherein an irradiation interval by intermittent flash of the light emitting means is set based on a detection signal of the registration mark detecting means.

According to a twelfth aspect of the present invention, in the twelfth aspect, a registration mark is provided on the film, and a registration mark detecting means for detecting a registration mark formed on the film at an appropriate position of the filling and packaging machine; And a control means for setting an irradiation interval by the intermittent flash of the light emitting means after a predetermined time with reference to a detection signal of the detecting means.

According to a thirteenth aspect of the present invention, in any one of the third to twelfth aspects, the light emitting means is detachably mounted on a downstream side in a film transport direction of a horizontal sealing mechanism comprising the pair of horizontal sealing rolls. A filling failure judgment device for a filling and packaging bag in a filling and packaging machine characterized by being attached and fixed as possible.

According to a fourteenth aspect, in the filling and packaging machine according to any one of the third to thirteenth aspects, the light emitting means is mounted and fixed so as to be capable of adjusting the position in the horizontal or vertical direction. Of the present invention is a device for judging a defective sealing of a filling and packaging bag.

According to a fifteenth aspect, in the third aspect,
An opening / closing means for intermittently opening and shutting off the irradiation light from the light emitting means in order to read a horizontal seal portion of the film is provided between the light emitting means and the film which is continuously transferred. The present invention is a device for judging a defective sealing of a filling and packaging bag in a filling and packaging machine.

[0027]

According to the first aspect of the present invention, a film to be continuously transported is vertically sealed by a vertical sealing mechanism comprising a pair of vertical sealing rolls rotating opposite to each other to form the film into a cylindrical shape. While the content formed of the fluid material is filled in the film formed in the above, the content is continuously sealed by being horizontally sealed by a horizontal sealing mechanism including a sealing plate provided on a pair of horizontal sealing rolls rotating opposite to each other. Then, on the downstream side in the film transport direction from the horizontal sealing mechanism, the light emitted from the light emitting means is intermittently applied to the heated horizontal sealing portion of the film, and remains at the horizontal sealing portion. This is a method for judging the sealing failure of the filled packaging bag, which makes it possible to judge the presence / absence of bubbles formed of vapor due to the contents by the afterimage phenomenon of the irradiation light by intermittent light emission. The afterimage phenomenon of the irradiation light by the intermittent flash from the light emitting means that the contents consisting of sex material remaining pinched laterally sealing portion, can be easily determined.

According to a second aspect of the present invention, in the first aspect,
By adopting a method of emitting light by synchronizing the irradiation interval by the intermittent flash with the light emitting means with respect to the film transfer speed, immediately after the horizontal heat sealing, intermittent flash is performed in synchronization with the film transfer speed. As a result, the horizontal seal point of the film is illuminated at a predetermined position and illuminated, so that the illuminated afterimage phenomenon causes the film to appear to be stopped at the same location, and as a result, the afterimage The quality of the horizontal seal can be determined satisfactorily by the phenomenon.

According to the third aspect of the present invention, in a filling and packaging machine in which contents are continuously sealed and packed, a downstream side in a film transport direction of a horizontal sealing mechanism including a sealing plate provided on a pair of horizontal sealing rolls. A light emitting means for enabling the presence / absence of air bubbles comprising the vapor of the content remaining in the horizontal sealing portion of the film heated by the horizontal sealing mechanism to be determined by a residual phenomenon due to intermittent irradiation. It is a device for judging a defective sealing of a filling and packaging bag in a packaging machine, and the filling and packaging bag in which the contents are continuously sealed and sealed by the horizontal sealing mechanism is downstream of the horizontal sealing mechanism in the film transfer direction. The presence / absence of air bubbles formed of vapor due to the contents remaining in the horizontal sealing portion of the heat-sealed film is satisfactorily determined by the irradiation light from the light emitting means. Rukoto can.

According to a fourth aspect of the present invention, in the third aspect, the light emitting means is configured to be capable of continuously intermittently flashing at a predetermined interval, so that the light emitting means can be made of a fluid substance such as a liquid. It can be easily determined that the content remains between the horizontal seal portions by the afterimage phenomenon of the irradiation light beam due to the intermittent flash light from the light emitting means.

According to a fifth aspect of the present invention, in the fourth aspect, the light emitting means is disposed behind the continuously transported film, so that the film of the film is caused by the afterimage phenomenon of the irradiation light due to the intermittent flash light from the light emitting means. The horizontal sealing portion can be confirmed to be in a permeated state, and it is possible to satisfactorily determine the presence or absence of bubbles formed of the vapor of the content remaining in the horizontal sealing portion of the heat-sealed film.

According to a sixth aspect of the present invention, in the fifth aspect, between the light emitting means and the film which is continuously transported, in order to make it easy to read a horizontal seal portion of the film, the light from the light emitting means is provided. By providing the masking means for setting the transmission area of the transmitted light, it can be confirmed as an afterimage phenomenon of the irradiated light due to intermittent flash light from the light emitting means partially around the horizontal seal point divided by the masking means. , It is possible to easily determine the sealing state.

According to a seventh aspect of the present invention, in the fourth aspect, the light emitting means is installed on the front side of the film to be continuously transferred, and the horizontal sealing portion of the film is irradiated by intermittent flash light from the light emitting means to heat the film. By making it possible to determine the presence / absence of bubbles made of vapor by the contents remaining in the horizontal sealing portion of the sealed film by the residual phenomenon due to intermittent flash light from the light emitting means, the film itself becomes Even in the case of a film that is opaque or a film that has been light-shielded by printing means, it remains at the laterally sealed portions of the heat-sealed film due to light emitted from the front side of the film. It is possible to satisfactorily determine the presence or absence of air bubbles formed of vapor of the contents.

According to the invention of claim 8, in any one of claims 3 to 7, the irradiation interval of the intermittent flash of the light emitting means is synchronized with the transport speed of the film to at least the horizontal sealing portion of the film. Can be irradiated, immediately after the horizontal heat sealing, the horizontal sealing portion of the film is illuminated and illuminated at a predetermined position by intermittent flash in synchronization with the transport speed of the film. As a result, the film appears to be stopped at the same place due to the afterimage phenomenon, and as a result, the presence or absence of bubbles formed by the vapor remaining due to the contents remaining at the horizontal seal location due to the afterimage phenomenon is favorably determined. Can be determined.

According to a ninth aspect of the present invention, in any one of the third to seventh aspects, a horizontal seal timing detecting means for detecting a horizontal seal timing in accordance with a rotational operation of the horizontal seal mechanism is provided. By setting the irradiation interval by the intermittent flash of the light emitting means based on the output signal from the horizontal seal timing detecting means, the sealing state of the horizontal seal portion of the film at a predetermined position due to the residual phenomenon due to the intermittent flash. Can be easily determined.

According to a tenth aspect of the present invention, in the ninth aspect, the control means for setting an irradiation interval by the intermittent flash light of the light emitting means after a predetermined time based on the output signal from the horizontal seal timing detecting means. Since it is a device for judging a defective sealing of a filling bag in a filling and packaging machine, it is possible to arbitrarily align a positional relationship of illuminating a horizontal sealing portion of a packaging film by setting the control means, so that it is easy for an observer to see. There is an effect that the position can be set.

According to the eleventh aspect of the present invention, in any one of the third to seventh aspects, the film is provided with a registration mark, and the registration mark formed on the film is provided at an appropriate position on the filling and packaging machine. A registration mark detecting means to be detected and an irradiation interval by the intermittent flash light of the light emitting means are set on the basis of a detection signal of the registration mark detecting means, so that a horizontal seal portion of the film is illuminated on the basis of the registration mark. This makes it possible to easily determine the sealing state of the horizontal sealing portion of the film at a predetermined position by the residual phenomenon caused by the intermittent flash of the light emitting means.

According to a twelfth aspect of the present invention, in the eleventh aspect, a registration mark is provided on the film, and a registration mark detecting means for detecting a registration mark formed on the film at an appropriate position of the filling and packaging machine. A control means for setting an irradiation interval by intermittent flashing of the light emitting means after a predetermined time based on the detection signal of the registration mark detecting means, and It is possible to arbitrarily adjust the positional relationship for illuminating the horizontal seal portion of the film by setting the control means, and there is an effect that the position can be set to a position that is easy for the observer to see.

According to a thirteenth aspect of the present invention, in any one of the third to twelfth aspects, the light emitting means is provided on a downstream side in a film transport direction of a horizontal sealing mechanism comprising the pair of horizontal sealing rolls. It can be easily attached to an existing filling and packaging machine by being detachably attached and fixed. By setting a device for judging a defective seal of the filling and packaging bag, the irradiation of the light emitting means can be performed at low cost. It is possible to easily determine the sealing state of the horizontal sealing portion of the film by the residual phenomenon due to the light beam.

According to a fourteenth aspect of the present invention, in any one of the third to thirteenth aspects, the light emitting means is mounted and fixed so as to be capable of adjusting the position in the left-right or up-and-down direction. By adjusting the mounting position of the light emitting means arbitrarily according to the case where the size, width, etc. of the
It is possible to satisfactorily determine the defective state of the seal.

According to a fifteenth aspect of the present invention, in the third aspect, an irradiation light beam from the light emitting means is provided between the light emitting means and the film which is continuously transported, in order to read a horizontal sealing portion of the film. The horizontal seal portion is momentarily illuminated by the light beam radiated in the open state by providing the opening and closing means for intermittently opening and closing the film. It is possible to easily determine the sealing state of the horizontal sealing location.

[0042]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIGS. 1 to 3 show a first embodiment of the present invention. FIG. 1 shows an entire structure of a filling and packaging machine to which the present invention is applied. Is provided with a support portion 2 for detachably replacing a film roll R wound in a roll shape. A film F is pulled out from the film roll R supported by the support portion 2 and guided.

A film guide portion 3 comprising a film slack preventing mechanism is provided on the upper portion of the machine base 1, and the film F passing through the film guide portion 3 is guided to a film turn-back portion 4. The film is folded in the longitudinal direction by the guide rod of the part 4.

A vertical sealing mechanism 5 comprising a pair of vertical sealing rolls 5A is provided at a position slightly below the film folding section 4, and the vertical sealing mechanism 5 causes the open side edge of the film (the end opposite to the folding side). Edge) is overlapped and the vertical seal F
The film F is formed into a tubular shape.

A filling nozzle 6 is provided between the guide bar of the film folding section 4 and the vertical seal roll 5A of the vertical sealing mechanism 5, and the filling nozzle 6 is provided inside the film F formed in a cylindrical shape. And this filling nozzle 6
A content W made of a fluid substance such as a liquid W is provided so as to be able to be filled through the hole.

Below the filling nozzle 6, first and second horizontal sealing mechanisms 7, 8 and a cutter mechanism 9 are provided.

As shown in FIG. 2, the first horizontal sealing mechanism 7 heat seals a cylindrical film F with a sealing plate 7B provided on a pair of horizontal sealing rolls 7A to form a horizontal seal FS. After forming the bottom portion for forming the packaging bag P and filling the contents W by the filling nozzle 6 into the film F formed into a bottomed cylindrical shape, the film F is further fed and fed. The portion on the bag mouth side of F is horizontally sealed FS by the first horizontal sealing mechanism 7 to continuously package the contents W. The lateral seal FS on the bag mouth side referred to here is the bottom of the subsequent packaging bag P, and is used for packaging the contents W one after another. In this embodiment, the sealing plate 7B is Are provided at four locations along the longitudinal direction of the horizontal seal roll 7A and at predetermined intervals in the rotational direction.

The second horizontal seal mechanism 8 has substantially the same configuration as the first horizontal seal mechanism 7, but generally includes a seal plate 8B provided on a pair of horizontal seal rolls 8A without a built-in heater. The horizontal seal FS formed by the first horizontal seal mechanism 7 is again sandwiched and pressed by the seal plate 8B provided on the horizontal seal roll 8A of the second horizontal seal mechanism 8, thereby improving the adhesion of the film F. Or horizontal seal F
It plays the role of finishing and shaping the surface shape of S,
In this embodiment, the seal plates 8B are provided at four locations along the longitudinal direction of the horizontal seal roll 8A and at predetermined intervals in the rotational direction.

The cutter mechanism 9 cuts the horizontal seal FS formed by the first and second horizontal seal mechanisms 7 and 8 at a substantially central position thereof, so that the packaging bag P is not shown. Unloading via the unloading mechanism,
Alternatively, the operation of the cutter mechanism 9 is stopped, and the horizontal sealing mechanisms 7 and 8 perform the horizontal sealing FS to form the packaging bag P. Then, without cutting, the packaging bag P is connected in a continuous state to form a band-shaped packaging bag P. Can be carried out via a carry-out mechanism (not shown).

In the present invention, the film F which is continuously transported is vertically sealed FH by a vertical sealing mechanism 5 comprising a pair of vertical sealing rolls 5A which rotate in opposition to form the film F into a tubular shape. Seal mechanism 7 comprising a pair of horizontal seal rolls 7A rotating opposite to each other while filling contents W made of a flowable substance such as a liquid into filled film F.
, The contents W are continuously sealed and packaged to form a filled packaging bag P. In particular, as a method of judging a defective sealing of the filled packaging bag P, the horizontal sealing mechanism 7 On the downstream side in the transport direction of the film F, due to the afterimage phenomenon of the irradiation light due to the intermittent flash light from the light emitting means 10, it is composed of the vapor from the contents W remaining at the horizontal seal FS of the heat-sealed film F. This is a method for judging a defective sealing of the filling and packaging bag P, which makes it possible to judge the presence / absence of bubbles WB. This can be easily determined by the afterimage phenomenon of the irradiation light beam due to the intermittent flash light.

At this time, by adopting a method of emitting light by synchronizing the irradiation interval of the light emitting means 10 with the intermittent flash with respect to the transport speed of the film F, the film F can be moved immediately after the horizontal heat sealing. The horizontal seal F of the film F is generated by intermittent flashing in synchronization with the transfer speed.
Since the S point is irradiated at a predetermined position and illuminated, the illuminated afterimage phenomenon causes the film F to appear to be stopped at the same position,
As a result, it is possible to satisfactorily determine the quality of the horizontal seal FS based on the afterimage phenomenon.

Further, in the present invention, as a device structure for achieving the above-described method for judging a defective seal of the filling and packaging bag P, the device is constituted by a pair of vertical seal rolls 5A which rotate the film F which is continuously transferred to face each other. The film F is formed into a cylindrical shape by performing the vertical seal FH by the vertical seal mechanism 5, and a pair of horizontal seals that rotate in opposition while filling the cylindrical film F with the contents W made of a fluid substance. Roll 7A
In the first embodiment, in the filling and packaging machine in which the contents W are continuously sealed and packaged by the packaging bag P by performing the horizontal seal FS by the horizontal seal mechanism 7 comprising the pair of the horizontal seal rolls 7A. The presence or absence of bubbles WB of vapor of the content W remaining at the horizontal seal FS of the film F heated by the horizontal seal mechanism 7 downstream of the horizontal seal mechanism 7 in the film F transport direction. The light emitting means 10 for enabling the determination of the position is fixed to the machine base 1.

In this case, in the first embodiment, a strobe light 10A is used as the light emitting means 10, and the strobe light 10A is continuously located behind the packaging bag P which has been sealed. The packaging bag P is formed of a transmissive material.

The strobe 1 as the light emitting means 10
0A and an aperture window for setting a transmission area of a light beam transmitted from a strobe 10A serving as the light emitting means 10 in order to make it easier to read a horizontal seal FS portion of the film F between the film F and the film F which is continuously transferred. A masking means 11 having a masking means 11A;
Is formed so that a region of the horizontal seal FS from the opening window 11A divided by the center can be transmitted by the irradiation light from the strobe 10A which is the light emitting means 10, and a surrounding region is formed by the strobe 10A.
In this embodiment, it is possible to easily determine the sealing state of only the horizontal seal FS by blocking the dazzling light beam. In this embodiment, between the strobe 10A and the masking means 11, Are surrounded by a cylindrical light-shielding wall 11B in order to prevent irradiation light from leaking to the outside.

Further, the mounting position of the strobe 10A or the opening window 11A provided in the masking means 11
The position and the like are configured so that the position can be adjusted vertically and horizontally so that the observer can easily see the position. When the size of the packaging bag P is different, or the height of the horizontal seal FS portion is set. Even when the size, width, or shape is changed, the size of the opening window 11A provided in the masking means 11 is also changed so that it can be easily checked.

In the first embodiment, the light emitting means comprising the strobe 10A emits light in synchronization with the horizontal sealing time of the first horizontal sealing mechanism 7 in accordance with the transfer of the film F. A lateral seal timing detecting means 12 for detecting a lateral seal timing of the first seal mechanism 7;
And a control means 13 for setting an irradiation interval by intermittent flash of the strobe 10A based on an output signal from the horizontal seal time detecting means 12. In this case, packaging conditions, for example, the material of the film F The control means 13 is operated in accordance with the film transfer speed which differs depending on the kind, the interval between the horizontal seals on which the packaging bag P is formed, the set temperature of the seal mechanisms 5 and 7, and the like. The light emitting means 10 composed of the strobe 10A emits light after a predetermined period of time by adjusting the timing based on the output signal from the horizontal seal timing detecting means 12 to illuminate the position of the horizontal seal FS of the packaging film F. It is possible to arbitrarily adjust the positional relationship to be output by the setting of the control means 13, and to strike at a position that is easy for the observer to see. It is configured to be able to set possible to determine the transverse seal FS locations by afterimage phenomenon of the irradiation light by intermittent flashing made of ball 10A.

The horizontal seal roll 7A of the horizontal seal mechanism 7 is provided with seal plates 7B at four locations along the longitudinal direction of the horizontal seal roll 7A and at predetermined intervals in the rotation direction. As shown in FIG. 2, the horizontal seal timing detecting means 12 is provided coaxially with the horizontal seal roll 7A, rotates together with the horizontal seal roll 7A, and is provided in a plate-like manner corresponding to the position of the seal plate 7B. And a detection unit 15 including a proximity sensor for detecting the detection unit 14. The detection signal from the horizontal seal timing detecting means 12 is sent to the CPU as the control means 13 so as to inform the timing of the horizontal sealing of the film F by the horizontal seal roll 7A of the horizontal sealing mechanism 7.

As shown in the block diagram of FIG. 3, the packaging condition setting means 16 composed of an operation panel and the like is provided with a packaging condition for each type, that is, a film transfer speed that differs depending on the type, and an interval size in which the packaging bag P is formed. And a numerical value based on conditions such as the filling amount of the contents W and the set temperature of the horizontal sealing mechanism 7, or a numerical value obtained empirically, and the set value is sent to the control means 13.

The storage means 17 stores the set values of the above-mentioned packaging condition setting means 16 in a non-volatile manner. After a predetermined time with the timing adjusted based on the output signal of
The delay time is stored so that the light emitting means 10 of 0A emits light.

As described above, according to the packaging conditions, the horizontal seal timing detecting means 12 provided in the horizontal seal mechanism 7
When the horizontal seal timing is detected, the control unit 13 controls the light emitting unit 10 including the strobe 10A to emit light after a predetermined time after the timing is adjusted based on the output signal from the horizontal seal timing detection unit 12.

That is, when the horizontal seal FS is applied to the continuously transported film F by the horizontal seal mechanism 7, the strobe 10A as the light emitting means 10 is installed at the horizontal seal FS of the continuously transported film F. Window 11A divided by the masking means 11
When passing through the position, the horizontal seal timing detecting means 1 is controlled via the control means 13 so that the strobe 10A flashes intermittently.
The strobe 10A is set to intermittently flash after a predetermined time after the timing is adjusted with reference to the output signal from the second output signal from the output signal from the second signal, so that the horizontal seal FS of the film F continuously transferred through the opening window 11A is sealed. The state can be clearly distinguished by the afterimage effect due to the intermittent flash.

At this time, a strobe 10A serving as the light emitting means 10 is disposed behind the film F while continuously transferring the film F, and a transparent film is provided between the strobe 10A and the film F as the packaging bag P. By installing the masking means 11 provided with the opening window 11A capable of light, the irradiation light by the intermittent flash light from the strobe 10A is shielded by the masking means 11, so that only the opening window 11A portion needs to be visually recognized. Thereby, the opening window 11
Horizontal seal FS of packaging bag P continuously transferred at position A
The location is synchronously lit by the strobe 10A, and the transverse seal FS location is illuminated by the intermittent flash from behind, and it is possible to confirm the seal state satisfactorily by the afterimage phenomenon due to the intermittent illumination. it can.

Further, the packaging condition setting means 16 set the film transfer speed, the interval between the formed packaging bags P (the interval of the seal pitch), the set temperature of the horizontal sealing mechanism 7, and the like, which are the packaging conditions for each product type. The setting conditions are stored in the storage unit 17.
As a result, the light emission timing of the intermittent flash of the strobe 10A, which is the light emission means 10 suitable for each packaging condition, is read from the storage means 17 as necessary, and the emission timing is automatically set. Also, when the type is changed, these times can be quickly set for the packaging specifications made in the past.

In this case, in the case of frequently used varieties, by inputting data such as the name of the product to be packaged, the product number, and the delivery destination together, these data can be used as keys to easily call them. It may be settable.

FIGS. 4 and 5 show a second embodiment of the present invention. In this embodiment, a wrapping film is provided with a registration mark, and this film is made of an impermeable material such as a resin film. In this case, a film formed by laminating aluminum foil or the like is used. In this case, the vertical sealing mechanism 5 is provided in the same manner as in the first embodiment.
A horizontal seal FS is provided by a horizontal seal mechanism 7 including a seal plate 7B provided on a pair of horizontal seal rolls 7A rotating while filling a content (liquid) W into a film F formed into a cylindrical shape by the above. The content W is continuously sealed and packaged.

In the second embodiment, on the downstream side of the horizontal sealing mechanism 7 in the film transport direction, in the second embodiment, a strobe 10A as the light emitting means 10 is installed on the front side of the film F to be continuously transported. By irradiating the horizontal seal FS portion of the film F with a flash light, the state of the presence or absence of the bubble WB made of the vapor by the contents W remaining at the horizontal seal FS portion of the heat-sealed film F,
The determination can be made based on the phenomenon of the residual reflected light due to the intermittent irradiation from the light emitting means 10.

In this embodiment, the light emitting means 10 is provided on the front side of the film F so that the film F itself is impermeable by irradiating the horizontal seal FS and reading the reflected light. Even if the film F is light-shielded by printing means, the light F irradiated from the front side of the film F causes the horizontal seal FS of the film F to be heated and sealed.
The sealing state of the location can be satisfactorily visually determined.

In this embodiment, as means for irradiating at least the horizontal sealing portion of the film in synchronization with the transport speed of the film, in this embodiment, FIG.
As shown in FIG. 5, on the basis of the detection signal from the registration mark detecting means M for detecting the registration mark printed on the film in the middle of the film feeding means, as shown in FIG. A control unit 13 for setting an irradiation interval of the intermittent flash of the strobe 10A. In this case, a film transfer speed that varies depending on packaging conditions, for example, a material and a type of the film F, and a lateral direction on which the packaging bag P is formed. The control means 13 is operated in accordance with the distance between the seals and the like. The timing of the strobe 10 is adjusted through the control means 13 based on the output signal from the registration mark output means M and after a predetermined time.
A light emitting means 10 made of A is made to emit light,
The position of illuminating the horizontal seal FS of the packaging film F can be arbitrarily adjusted by the setting of the control means 13, and an afterimage of reflected light due to the intermittent flash light of the strobe 10A at a position that is easy for the observer to see. It is provided so that the quality of the horizontal seal FS portion can be determined by a phenomenon.

As in the first embodiment, the packaging condition setting means 16 comprising an operation panel or the like directly inputs numerical values based on the packaging conditions for each product type or empirically obtained values. The set value is sent to the control means 13.

The storage means 17 stores the set values of the above-mentioned packaging condition setting means 16 in a non-volatile manner. The storage means 17 stores the set values from the registration mark detecting means M corresponding to the packaging conditions for each product type. After a predetermined time after the timing is adjusted based on the output signal, the strobe 10A
The delay time is stored so that the light emitting means 10 made of light emits light.

As described above, when the registration mark detecting means M detects the registration mark applied to the film F in accordance with the packaging conditions, a predetermined timing is set based on the output signal from the registration mark detecting means M. After a lapse of time, the delay time is controlled by the control means 13 so that the light emitting means 10 including the strobe 10A emits light.

That is, the registration mark applied to the film F which is continuously transported is detected by the registration mark detecting means M, and after a predetermined period of time adjusted based on the output signal from the registration mark detecting means M, the strobe 10
A is set so that it flashes intermittently. The setting condition is such that the horizontal seal FS of the film F which is continuously transferred passes synchronously when the strobe 10A as the light emitting means 10 is installed. By doing
Since the horizontal seal FS is illuminated and synchronized with the transfer speed of the film F, the position at which the horizontal seal FS can be confirmed without moving does not move. The distinction can be made clearly by the afterimage effect.

Although not shown, an opening / closing shutter plate or a transmissive member such as a halogen lamp is provided in front of the light emitting means such as a halogen lamp at the horizontal seal FS of the continuously packed packaging bag P serving as a subject by intermittent irradiation. Arrange opening and closing means such as a rotating plate with a window,
By intermittently irradiating the plate subject side by the opening and closing operation of the opening and closing shutter and the rotation operation of the rotary plate, the light beam irradiated in the open state instantaneously illuminates the horizontal seal portion, thereby resulting in an afterimage. By utilizing the effect, it is possible to easily determine the sealing state of the horizontal sealing portion of the film.

In each embodiment, the light emitting means 10 is set to emit light intermittently in perfect synchronization with the film F which is continuously transported, and the position where the horizontal seal FS is illuminated by the afterimage phenomenon. In a stopped state so that it can be distinguished. For example, in the case where a plurality of packaging bags sealed and packaged from the front side are irradiated by the light emitting means 10, the actual speed of the film may be reduced. Even if the irradiation interval of the intermittent light emission by the light emitting means 10 is slightly out of alignment, even if the position of the horizontal seal FS moves extremely slowly due to the residual phenomenon due to the intermittent light emission, it is visually observed following the movement. Any material may be used as long as the position of the horizontal seal FS can be determined to the extent that it can be determined by the residual effect due to intermittent light emission.

As shown in FIG. 6, a packaging bag formed by continuously sealing and packaging the contents in the embodiment has a vertical seal FH in which the folded ends of the film F are heat-sealed by a pair of vertical seal rolls 5A. This is a type in which a packaging bag P filled with contents W is formed by sealing the three sides by a portion and a horizontal seal FS portion heat-sealed by a pair of horizontal seal rolls 7A in a direction orthogonal to the longitudinal direction of the film F. However, as shown in FIG. 7, two films F1, F
2 are superimposed and guided out, and each film F
1 and F2 are heat-sealed with vertical seal rolls (not shown), and the vertical seal portions FH1 and FH on both sides are respectively formed.
A packaging bag P filled with contents W by forming a bag in a cylindrical shape with H2 and then sealing the four sides with a horizontal seal FS portion heat-sealed by a horizontal seal roll (not shown) in a direction orthogonal to the longitudinal direction of the film F. Can also be applied to the type in which is molded.

Although not shown, the light emitting means 10 is detachably mounted and fixed on the downstream side in the film transport direction of the horizontal seal mechanism 7 comprising a pair of horizontal seal rolls 7A, so that the existing filling and packaging can be performed. This makes it possible to easily attach the film F to the film F by means of a device for determining the sealing failure of the filling and packaging bag P.
The light emitting means is arranged at a position immediately after the horizontal heat sealing by the horizontal sealing mechanism 7 of the existing filling and packaging machine is performed. Even if it is configured to intermittently irradiate, almost the same effect can be obtained.

Further, in each of the embodiments, the case where the determination is made by visual observation has been described in the embodiments. However, in order to advance the automation, the light emitting means, a visual device such as a camera, and a normal seal are used. By forming a seal failure determination mechanism with a controller for comparing the state with the state, an image storing a normal seal state is compared with an image newly read by a visual device such as a camera. The controller can automatically determine whether or not the seal is defective. In this case, the operation of the filling and packaging machine can be automatically stopped or an alarm can be displayed based on the result of the determination. It is.

[0078]

As described in detail above, according to the present invention,
The film that is continuously transported is vertically sealed by a vertical sealing mechanism consisting of a pair of vertical seal rolls that rotate in opposition to form the film into a tubular shape, and the contents made of a fluid material are placed in the tubular film. While filling, the contents are continuously sealed and sealed by a horizontal sealing mechanism composed of a sealing plate provided on a pair of horizontal sealing rolls rotating opposite to each other, and then the film transport direction is determined by the horizontal sealing mechanism. On the downstream side, the afterimage phenomenon of the irradiation light beam due to the intermittent flash light from the light emitting means makes it possible to determine the presence or absence of air bubbles formed by the contents remaining in the horizontal sealing portion of the heat-sealed film. It is a method and an apparatus for judging a sealing failure of a filling packaging bag, and it is intended that a content made of a fluid substance such as a liquid remains between the horizontal sealing portions. The afterimage phenomenon of rays by the intermittent irradiation of the light unit, there is an effect that can be easily determined.

[Brief description of the drawings]

FIG. 1 is a front view of a filling and packaging machine showing a first embodiment of the present invention.

FIG. 2 is a side view of a main part mainly showing a horizontal sealing mechanism and a light emitting unit of FIG. 1;

FIG. 3 is a block diagram showing an electrical configuration of the first embodiment of the present invention.

FIG. 4 is a side view of a main part mainly showing a state of a horizontal seal showing a second embodiment of the present invention.

FIG. 5 is a block diagram showing an electrical configuration of a second embodiment of the present invention.

FIG. 6 is a perspective view of a packaging bag with a three-side seal according to the embodiment of the present invention.

FIG. 7 is a perspective view of a packaging bag with a four-sided seal applied to the present invention.

FIG. 8 is a front view of a filling and packaging machine showing a conventional example.

FIG. 9 is a side view of a main part mainly showing a conventional lateral seal mechanism.

FIG. 10 is an enlarged sectional view showing a state of a film heat-sealed by a horizontal sealing mechanism.

[Explanation of symbols]

 Reference Signs List 5 vertical sealing mechanism 6 filling nozzle 7 first horizontal sealing mechanism (horizontal sealing mechanism) 7A horizontal sealing roll 7B sealing plate 8 second horizontal sealing mechanism (horizontal sealing mechanism) 8A horizontal sealing roll 10 light emitting means 10A strobe 11 masking means 12 Horizontal seal time detecting means 13 Control means 14 Detected member 15 Detecting unit 16 Packaging condition setting means 17 Storage means F Film FH Vertical seal FS Horizontal seal FR Hot-melt resin layer M Registration mark detecting means P Packaging bag W Contents (liquid ) WB bubbles

Claims (15)

[Claims] 1. A film which is continuously transported is vertically sealed by a vertical sealing mechanism comprising a pair of vertical sealing rolls rotating opposite to each other to form a film into a tubular shape, and a flowable substance is contained in the cylindrically formed film. While filling the contents consisting of
The contents are continuously sealed and sealed by a horizontal sealing mechanism comprising a sealing plate provided on a pair of horizontal sealing rolls rotating in opposition, and then the content is continuously sealed downstream from the horizontal sealing mechanism in the film transport direction. A light beam emitted from the light emitting means is intermittently applied to the heated horizontal sealing portion of the film, and the presence or absence of air bubbles made of the vapor of the contents remaining in the horizontal sealing portion is determined by intermittent light emission. A method for judging a defective sealing of a filled packaging bag, which can be judged by an afterimage phenomenon of an irradiation light beam. 2. The method according to claim 1, wherein the light emitting unit emits light by synchronizing an irradiation interval of the intermittent flash with respect to a transfer speed of the film, so that bubbles formed by vapor remaining due to the contents remaining in a horizontal sealing portion of the film. The method of claim 1, wherein the presence / absence can be determined. 3. A film which is continuously transported is vertically sealed by a vertical sealing mechanism comprising a pair of vertical sealing rolls rotating opposite to each other to form a film into a cylindrical shape, and a flowable substance is contained in the cylindrically formed film. While filling the contents consisting of
In a filling and packaging machine, the contents are continuously sealed and horizontally sealed by a horizontal sealing mechanism including a sealing plate provided on a pair of horizontal sealing rolls rotating in opposition,
On the downstream side in the film transport direction of the horizontal sealing mechanism comprising a sealing plate provided on the pair of horizontal sealing rolls, the content remaining at the horizontal sealing point of the film heated by the horizontal sealing mechanism is removed. A device for judging a defective sealing of a filling and packaging bag in a filling and packaging machine, characterized by comprising a light emitting means capable of discriminating the presence or absence of vapor bubbles formed by intermittent irradiation. 4. A sealing failure of a filling and packaging bag in a filling and packaging machine according to claim 3, wherein said light emitting means is configured to be capable of intermittent flashing continuously at a set predetermined interval. Discriminator. 5. The light emitting means is installed behind the film which is continuously transferred, and the light beam emitted by the intermittent flash light from the light emitting means is transmitted through a horizontal seal portion of the film,
The filling packaging bag in the filling and packaging machine according to claim 4, wherein it is possible to determine the presence or absence of air bubbles formed of the vapor of the content remaining in the horizontal sealing portion of the heat-sealed film. Seal failure determination device. 6. A masking means for setting a transmission area of a light beam transmitted from the light emitting means between the light emitting means and the film which is continuously transported, in order to make it easy to read a horizontal seal portion of the film. 6. A device for judging a sealing failure of a filling and packaging bag in the filling and packaging machine according to claim 5, wherein the device is provided. 7. The light emitting means is installed on the front side of a film to be continuously transferred, and the horizontal sealing portion of the film is irradiated by intermittent flash light from the light emitting means, and remains at the horizontal sealing portion of the heat-sealed film. 5. The apparatus according to claim 4, wherein it is possible to determine the presence or absence of the vapor formed by the contents. 8. An irradiation interval of the intermittent flash light of the light emitting means is synchronized with a transfer speed of the film so that at least a horizontal seal portion of the film can be irradiated, and the content remaining in the horizontal seal portion of the film is removed. 8. A device for judging a defective sealing of a filling and packaging bag in a filling and packaging machine according to any one of claims 3 to 7, wherein the presence or absence of bubbles made of steam is determined. 9. A horizontal seal timing detecting means for detecting a horizontal seal timing in accordance with a rotation operation of the horizontal seal mechanism, wherein an output signal from the horizontal seal timing detecting means is used as a reference.
The apparatus according to any one of claims 3 to 7, wherein an irradiation interval by the intermittent flash of the light emitting means is set. 10. A control means for setting an irradiation interval of intermittent flash light of said light emitting means after a predetermined time based on an output signal from said horizontal seal timing detecting means. For determining the sealing failure of filling and packaging bags in filling and packaging machines. 11. A registration mark is provided on the film,
A registration mark detecting means for detecting a registration mark formed on the film at an appropriate position of the filling and packaging machine; and an irradiation interval by the intermittent flash of the light emitting means is set based on a detection signal of the registration mark detection means. 8. A device for judging a defective sealing of a filling and packaging bag in a filling and packaging machine according to any one of claims 3 to 7. 12. A registration mark is provided on the film,
A registration mark detecting means for detecting a registration mark formed on the film at an appropriate position of the filling and packaging machine; and setting an irradiation interval by intermittent flash light of the light emitting means after a predetermined time based on a detection signal of the registration mark detection means. 12. A device for judging a sealing failure of a filling and packaging bag in the filling and packaging machine according to claim 11, comprising a control means for performing the operation. 13. The apparatus according to claim 3, wherein said light emitting means is detachably mounted and fixed on a downstream side in a film transport direction of a horizontal seal mechanism comprising said pair of horizontal seal rolls. 13. A device for judging a sealing failure of a filling and packaging bag in the filling and packaging machine according to any one of 12 above. 14. The filling and packaging bag according to claim 3, wherein the light emitting means is mounted and fixed so that the position can be adjusted in the left-right or vertical direction. Seal failure determination device. 15. An opening / closing means for intermittently opening and blocking irradiation light from the light emitting means in order to read a horizontal seal portion of the film between the light emitting means and the film which is continuously transferred. 4. A device for judging a defective sealing of a filling and packaging bag in the filling and packaging machine according to claim 3, characterized by comprising: