JP2013082470A - Sealing device and sealing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing device for sealing a protruded mouth part of a container with one flat heat-shrinkable film.SOLUTION: The sealing device 40 lowers a heating head 44 while a sealing material S formed of a flat biaxially oriented film is placed on an upper face of the mouth part MP of a beer keg B stopped at a sealing position, and heat-shrinks the sealing material S by blowing out saturated steam from steam blowing holes of the heating head 44 while the heating head 44 is fitted onto the mouth part MP of the beer keg B so as to press the heating head 44 to an outer periphery of the mouth part MP of the beer keg B. In heat-shrinking the sealing material S, a suction head 34 of a sealing material transfer device 30 presses the sealing material S placed on the upper face of the mouth part MP of the beer keg B from above.

Description

  The present invention relates to a sealing device that can seal a mouth portion of a container by mounting a flat heat-shrinkable film so as to cover the mouth portion of the protruding container.

  For example, as shown in FIG. 9, beer barrel B filled with beer is shipped with a cap seal formed of a heat-shrinkable film attached to its mouth portion MP.

  An example of a cap seal attached to the mouth of a via barrel is shown in FIG. The cap seal CS is composed of a circular top plate p formed of paper or the like and a cylindrical body portion b formed of a heat-shrinkable film, and the upper end portion of the body portion b is preliminarily provided. By being thermally contracted, the winding portion is bonded and fixed to the top plate p in the state of being wound around the upper surface peripheral portion of the top plate p.

  Therefore, in order to attach such cap seal CS to the mouth portion MP of the via barrel B, as shown in FIG. 11, one cap seal CS is fitted to the mouth portion MP of the via barrel B being conveyed. After that, the cap seal CS is brought into close contact with the mouth portion by heat-shrinking the body portion b formed of the heat-shrinkable film.

Japanese Patent No. 3854352 Japanese Patent No. 4652900

  However, since it takes time and cost to manufacture the cap seal CS that is a molded product as described above, the container mouth protruded by one flat heat-shrinkable film instead of the molded product as described above. It is desired to seal the mouth of the container by attaching a heat-shrinkable film so as to cover the part.

  Then, the subject of this invention is providing the sealing apparatus and sealing system which can seal the opening | mouth part of the container which protruded with one flat heat-shrinkable film.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a sealing device that seals the mouth of a container by covering the mouth of the protruding container using a sealing material made of a flat heat-shrinkable film. A film pressing means for pressing from above the portion corresponding to the upper surface of the mouth portion of the sealing material placed on the upper surface of the mouth portion of the container, and a sealing material placed on the upper surface of the mouth portion of the container by the film pressing means. A heating unit that heats the heat-shrinkable film with saturated water vapor, superheated water vapor, or hot air. The sealing device characterized by the above is provided.

  Further, the invention according to claim 2 is the sealing device of the invention according to claim 1, wherein the heating head has a mouth in a sealing material placed on the top surface of the mouth of the container when the heating head is put on the mouth of the container. It has the control part which bends the part which protruded outside from the part upper surface to the downward side, It is characterized by the above-mentioned.

  Further, the invention according to claim 3 is a sealing system that seals the mouth of the container by covering the mouth of the protruding container with a sealing material made of a flat heat-shrinkable film. A sealing material supply device that supplies the sealing material to the sealing material supply position, a container transport device that intermittently transports the container while stopping at the sealing position, and a sealing material supplied to the sealing material supply position by the sealing material supply device. The sealing material transfer device placed on the upper surface of the mouth of the container that has been transported to the sealing position, and the sealing material placed on the upper surface of the mouth of the container at the sealing position, so as to wrap the mouth of the container A sealing device for sealing the mouth portion, the sealing device comprising a film pressing means for pressing from above the portion corresponding to the mouth top surface of the sealing material placed on the mouth top surface of the container, and the mouth top surface of the container The sealing material placed on the film There is provided a sealing system characterized in that it comprises heating means for heating in a state of pressing by means.

  According to a fourth aspect of the present invention, in the sealing device of the third aspect of the invention, the sealing material transfer device transfers the sealing material supplied to the sealing material supply position to the sealing position in a state where the upper surface of the sealing material is sucked and held. The film pressing means is constituted by the suction head of the sealing material transfer device.

  As described above, the sealing device according to the first aspect of the present invention and the sealing system according to the third aspect of the present invention provide the film pressing means for sealing the sealing material made of a flat heat-shrinkable film placed on the upper surface of the mouth of the container. When heated by the heating means in a state where it is pressed by the sealing means, the portion of the sealing material that protrudes outward from the mouth of the container is thermally shrunk so as to wrap around the mouth peripheral surface. In this state, the mouth of the container is sealed in a state in which the sealing material is mounted cleanly so as to cover the upper surface and the peripheral surface of the mouth. Therefore, as in the prior art, the mouth of the container is formed using a cap seal of a molded product composed of a circular top plate formed of paper or the like and a cylindrical body formed of a heat-shrinkable film. It is possible to seal at a lower cost than when sealing.

  In particular, in the sealing device according to the first aspect of the present invention, since the heating head is locally covered in a state of covering the sealing material by covering the mouth portion of the container, the heating efficiency is good and the heat capacity is particularly large. When heated with saturated steam or superheated steam, the sealing material can be thermally contracted in a short time at a lower heating temperature than when heated with warm air or the like. For this reason, there is little damage to the printing layer of the sealing material, it can be finished beautifully, and even if the intermittent operation is performed in which the sealing process is performed with the container temporarily stopped, the necessary and sufficient processing speed is ensured. The effect that it can be obtained.

  In the sealing device of the invention according to claim 2, when the heating head covers the mouth portion of the container, the portion projecting outward from the upper surface of the mouth portion of the sealing material placed on the upper surface of the mouth portion of the container is provided. Since it has a restricting portion that bends downward, when the mouth of the container is fitted by the heating head, the protruding portion of the sealing material from the mouth of the container is bent downward by the restricting portion. Since the sealing material is heated in this state, the overhanging portion of the sealing material from the mouth of the container is thermally contracted so as to surely wrap around the peripheral surface of the mouth.

  In particular, in the sealing system of the invention according to claim 4, since the suction head of the sealing material transfer device also has a function as a film pressing means of the sealing device, the sealing material is placed on the upper surface of the mouth of the container and simultaneously sealed. The material can be pressed, the time required for the sealing process can be shortened, and it is not necessary to provide an independent film pressing means, so that the sealing device itself can be simplified.

It is a top view which shows one Embodiment of the sealing system which concerns on this invention. It is a side view which shows the sealing material supply apparatus which comprises the sealing system same as the above. It is sectional drawing which shows the via barrel conveyance apparatus which comprises the sealing system same as the above. It is a fragmentary sectional view which shows the sealing position in the sealing system same as the above. It is a top view which shows the sealing material transfer apparatus which comprises the sealing system same as the above. It is an expanded sectional view which shows the heating means which comprises the sealing apparatus same as the above. It is a fragmentary sectional view which shows the heating state of the sealing material in the sealing apparatus same as the above. (A) is a top view which shows the via barrel applied to the sealing system same as the above, (b) is a partially cutaway sectional view showing the via barrel as above. It is a fragmentary sectional view which shows the via barrel by which the opening part was sealed with the cap seal | sticker which is a molded product. (A) is a top view which shows a cap seal same as the above, (b) is a longitudinal cross-sectional view which shows a cap seal same as the above. It is a fragmentary sectional view which shows the state which fitted the cap seal same as the above to the opening | mouth part of a via barrel.

  Hereinafter, embodiments will be described with reference to the drawings. As shown in FIGS. 8A and 8B, FIG. 1 shows biaxial stretching of a heat-shrinkable mouth MP of a via barrel B whose outer peripheral wall is formed higher than the upper surface of the mouth MP. 1 shows a sealing system 1 for sealing with a flat rectangular sealing material S made of a film. As shown in FIG. 1, this sealing system 1 is a long strip-shaped sealing material forming base made of a biaxially stretched film. A sealing material supply device 10 that supplies the sealing material S to the sealing material supply position α while sequentially forming the sealing material S from the material SM, and a via barrel conveyance device 20 that intermittently conveys the via barrel B while stopping at the sealing position β. By using the sealing material transfer device 30 for transferring the sealing material S supplied to the sealing material supply position α by the sealing material supply device 10 to the sealing position β, and the sealing material S conveyed to the sealing position β, the via barrel B The mouth MP is sealed so as to wrap the mouth MP. And a sealing device 40. The sealing material S is formed of a polyethylene terephthalate film having a thickness of 30 μm and a heat shrinkage rate of 52%. The top surface of the mouth portion MP of the via barrel B is formed in the center of the square sealing material S. Circular design printing is applied to cover the part.

  As shown in FIG. 1 and FIG. 2, the sealing material supply device 10 includes a continuous delivery unit 11 that continuously feeds the sealing material forming base material SM, and a seal that is continuously delivered by the continuous delivery unit 11. An accumulator 12 for storing the material forming base material SM, a perforation forming unit 13 disposed on the downstream side of the accumulator 12 for forming perforations for opening at a predetermined pitch on the sealing material forming base material SM; By intermittently cutting the sealing material forming base material SM on which the perforations are formed, and the intermittent sending unit 14 for intermittently sending the sealing material forming base material SM formed with a predetermined cut pitch at a predetermined cut pitch. The cutting unit 15 for forming the sealing material S, the belt conveying unit 16 for intermittently conveying the formed sealing material S to the sealing material supply position α, and the cut pitch are adjusted. And a mark sensor 17 for detecting a pattern or point mark printed on the sealing material forming substrate SM at a predetermined pitch, and a perforation position adjusting unit 18 for adjusting the position of the perforation with respect to the cutting position. By detecting the joint of the sealing material forming base material SM by the joint detection unit 19 disposed between the stitch forming unit 13 and the perforation position adjusting unit 18, the sealing material S corresponding to the joint portion is detected. Is automatically discharged.

  As shown in FIGS. 1 and 3, the via barrel conveying device 20 continuously conveys the via barrel B so as to pass the sealing position β, and continuously conveys the via barrel 21 by the conveying conveyor 21. A stopper unit 22 is provided for temporarily stopping the via barrel B to be stopped at the sealing position β.

  The stopper unit 22 is composed of a pair of rotating arms 23 disposed on both sides of the conveyor 21 and roller members 24 that are rotatably supported at the distal ends of the rotating arms 23. The pair of rotating arms 23 rotate to the via path of the via barrel B, and the pair of roller members 24 abut against the circumferential surface of the barrel portion of the via barrel B. Temporarily stop.

  As shown in FIGS. 1, 4, and 5, the sealing material transfer device 30 is disposed between the sealing material supply device 10 and the via barrel conveying device 20 and is rotatably supported by the support shaft SS. A disk-shaped base member 31 that is rotationally driven by a driving means (not shown), a pair of cylinder units 32 disposed on the base member 31, and an operating unit that is attached to the piston rod of each cylinder unit 32 to move up and down. An L-shaped suction tube 33 supported by 32a, a suction head 34 connected to the lower end portion of each suction tube 33, and an upper end portion of each suction tube 33 are connected via a suction path (not shown). The suction head 34 has such a size and shape that the lower surface of the suction head 34 substantially covers the upper surface of the mouth portion MP of the via barrel B, and a plurality of suction holes are formed on the lower surface. It has been made.

  The pair of suction heads 34 is configured such that when one suction head 34 is located at the sealing material supply position α, the other suction head 34 is located at the sealing position β, and at the sealing material supply position α. After one suction head 34 is lowered and the sealing material S is sucked and held on its lower surface, the one suction head 34 holding the sealing material S is sucked up and the base member 31 is rotated 180 degrees. By transferring the sealing material S from the sealing material supply position α to the sealing position β and lowering one suction head 34 that sucks and holds the sealing material S, the via barrel B stopped at the sealing position β. The sealing material S is placed on the upper surface of the mouth portion MP.

  As shown in FIGS. 1, 4, and 6, the sealing device 40 includes a base member 41 fixed to a support shaft SS that supports the base member 31 in the sealing material transfer device 30, and the base member 41. A cylinder unit 42 disposed, a steam supply pipe 43 supported by an operating part 42 a that moves up and down attached to a piston rod of the cylinder unit 42, and an outer wall 45 connected to the lower end of the steam supply pipe 43. And a circular cap-shaped heating head 44 formed by a double wall comprising an inner wall 46, steam supply means (not shown) connected to the steam supply pipe 43 via a steam supply path (not shown), and the mouth of the via barrel B When the sealing material S placed on the upper surface of the part MP is heated and shrunk, sealing material pressing means for pressing the sealing material S from above is provided, and the heating head 44 includes a double wall. Saturated steam in a space enclosed by the walls 45 and inner wall 46 are supplied.

  As shown in FIG. 6, the heating head 44 has a plurality of vapor discharge holes 44a formed in the lower peripheral surface of the inner peripheral wall 46a constituting the inner wall 46, and the peripheral surface formed by the double wall. Is formed with a notch 44b into which the suction pipe 33 of the sealing material transfer device 30 is fitted.

  This sealing device 40 lowers the heating head 44 in a state where the sealing material S is placed on the upper surface of the mouth portion MP of the via barrel B stopped at the sealing position β, and the outer periphery of the mouth portion MP of the via barrel B. The sealing material S is heated and shrunk by blowing saturated water vapor from the vapor discharge holes 44a of the heating head 44 in a state where the heating head 44 is fitted to the mouth portion MP of the via barrel B so as to press the heating head 44 against the portion. When the sealing material S is heated and contracted, the suction head 34 of the sealing material transfer device 30 presses the sealing material S placed on the upper surface of the mouth portion MP of the via barrel B from above. ing. Therefore, in the sealing system 1, the suction head 34 of the sealing material transfer device 30 also has a function as a film pressing unit of the sealing device 40.

  Further, the sealing material transfer device 30 includes a continuous delivery unit 11, an accumulator 12, a perforation forming unit 13, an intermittent delivery unit 14, a cutting unit 15, a belt transport unit 16, and a mark sensor 17 that constitute the sealing material supply device 10. The perforation position adjusting unit 18 and the joint detection unit 19 are fixedly installed on the supporting plate 10A to which the perforation position adjusting unit 18 and the joint detecting unit 19 are attached, respectively, and the sealing material supply device 10 rotates the operation handle (not shown) as a whole. Therefore, when the sealing material supply device 10 is moved up and down, the sealing material transfer device 30 and the sealing device 40 fixed to the support shaft SS of the sealing material transfer device 30 are also correspondingly provided. It will go up and down at the same time. Therefore, even if it is a case where it changes to a via barrel with a different height (internal capacity), it can be easily handled by adjusting the height position of the sealing material supply device 10.

  In the sealing system 1 configured as described above, after the sealing material S supplied to the sealing material supply position α by the sealing material supply device 10 is transferred to the sealing position β by the sealing material transfer device 30 as described above. 7, the sealing material S is placed on the upper surface of the mouth portion MP of the via barrel B stopped at the sealing position β, and the suction head 34 presses the sealing material S against the upper surface of the mouth portion MP. In this state, the mouth portion MP of the via barrel B is fitted by the heating head 44 and heated by the saturated steam blown from the heating head 44, so that it protrudes outward from the upper surface of the mouth portion MP in the sealing material S. The heat shrinks so that the portion wraps around the peripheral surface of the mouth portion MP, and the sealing material S is mounted neatly so as to wrap around the upper surface and the peripheral surface of the mouth portion MP.

  In particular, in this sealing system 1, when the mouth portion MP of the via barrel B is fitted by the heating head 44, the portion of the sealing material S that protrudes outward from the upper surface of the mouth portion MP of the via barrel B is the heating head 44. Since the sealing material S is heated in contact with the inner peripheral wall 46a of the sealing member S and the sealing material S is heated in this state, the portion of the sealing material S that protrudes outward from the upper surface of the mouth MP is It is thermally shrunk so as to surely go around the peripheral surface.

  When the sealing of the mouth portion MP of the via barrel B with the sealing material S is completed in this way, as shown in FIG. 4, after the heating head 44 is lifted, the suction head 34 is lifted and the mouth portion MP is sealed. When the via barrel B is unloaded and the base member 31 of the sealing material transfer device 30 is reversed, the process shifts to the sealing processing of the via barrel B that is next transported to the sealing position β.

  Thus, with the suction head 34 pressing the sealing material S against the upper surface of the mouth portion MP, the mouth portion MP of the via barrel B is fitted by the heating head 44, and saturated steam is blown out from the heating head 44. Therefore, the suction head 34 is heated together with the sealing material S, but after the sealing of the mouth MP of the via barrel B by the sealing material S is completed, the suction head 34 rises and receives the next sealing material S. Since the suction head 34 is cooled by continuing the suction operation until it goes to, there is no need to provide an independent cooling means. Needless to say, an independent cooling means may be provided separately.

  As described above, in this sealing system 1, the opening MP of the via barrel B can be cleanly sealed by the flat sealing material S made of the biaxially stretched film, so that the cap of the molded product as in the conventional case is used. It is not necessary to use a seal as a sealing material, and sealing can be performed at a lower cost than in the past.

  Moreover, in this sealing system 1, since the sealing apparatus 40 heats the sealing material S with saturated water vapor | steam with a large heat capacity compared with a hot air etc., compared with the case where it heats with a hot air etc., heating is low. At the temperature (100 ° C.), the sealing material can be thermally shrunk in a short time, and there is obtained an effect that the sealing material is less damaged and can be finished beautifully.

  In particular, in this sealing system 1, since the suction head 34 of the sealing material transfer device 30 also has a function as a film pressing means of the sealing device 40, the sealing material S is placed on the upper surface of the mouth portion MP of the via barrel B. At the same time, the sealing material S can be pressed, the time required for the sealing process can be shortened, and an independent film pressing means need not be provided separately, so that the sealing device 40 itself can be simplified.

  In addition, the via barrel generally has poor dimensional accuracy, and the height position of the mouth portion MP may fluctuate. In this sealing system 1, the heating head 44 fitted to the mouth portion MP of the via barrel B is used. However, the cylinder unit 42 is pressed against the outer peripheral portion of the mouth portion MP of the via barrel B, and the suction head 34 also presses the sealing material S against the upper surface of the mouth portion MP by the cylinder unit 32. Therefore, even if the height position of the mouth portion MP fluctuates within a certain range, the fluctuation can be reliably absorbed, and a via barrel having poor dimensional accuracy can be sufficiently dealt with.

  In addition, since the beer barrel filled with beer has a low surface temperature, it is necessary to lengthen the heating time when the sealing material is heated and contracted with hot air, and the beer barrel is temporarily stopped in consideration of the processing speed. In this sealing device 40, saturated steam having a large heat capacity is placed in a state where the heating head 44 is put on the mouth of the via barrel B and the sealing material S is surrounded. Thus, the heating time can be shortened, and a necessary and sufficient processing speed can be ensured even when intermittent operation is performed.

  In addition, as described above, since the outer peripheral wall portion is higher than the upper surface of the mouth portion, the via barrel is continuous without stopping the via barrel with the cap seal fitted to the mouth portion as in the past. If the sealing process is to be carried out while being transported, for example, a chain or other pressing member is hung on the top surface of the cap seal that is fitted to the mouth of the via barrel that is being transported, and the cap seal is heated while shrinking. In other words (see Patent Document 1), the top surface of the cap seal may be damaged, but this sealing system 1 employs an intermittent operation in which sealing is performed while the via barrel is temporarily stopped. Therefore, there is an advantage that even if the sealing material S placed on the upper surface of the mouth portion MP of the via barrel is pressed, no damage is caused.

  In the above-described embodiment, when the heating head 44 is fitted to the mouth portion MP on which the sealing material S is placed on the upper surface, the portion of the sealing material S that protrudes outward from the upper surface of the mouth portion MP is used as the heating head 44. However, the present invention is not limited to this, but it is not limited to this, and the restricting portion that deflects the protruding portion of the sealing material S downward is heated. It is also possible to adopt a configuration provided separately in the head 44.

  Moreover, even if the sealing material S is not in contact with the heating head 44 in a state in which the heating head 44 is fitted to the mouth portion MP on which the sealing material S is placed, that is, the mouth portion MP of the sealing material S is not touched. Even if the portion protruding outward from the upper surface is not forced to bend downward, it is heated outward by the saturated water vapor blown out from the heating head 44, so that it protrudes outward from the upper surface of the mouth portion MP in the sealing material S. Since the sealing material S can be mounted so that the portion wraps around the peripheral surface of the mouth portion MP and wraps around the upper surface and the peripheral surface of the mouth portion MP, the above-described restricting portion is not necessarily provided.

  In the above-described embodiment, the sealing device 40 heat-shrinks the sealing material S with saturated steam, but is not limited thereto, and the sealing material can be heat-shrinked with superheated steam or hot air. It is.

In particular, superheated steam
1) Unlike saturated steam with a supply temperature of 100 ° C, the supply temperature can be set freely at 100 ° C or higher. 2) Since the heat capacity is larger than that of heated air, it is heated with heated air at the same temperature. 3) Heated air can be heated rapidly only by convection, but superheated steam can be combined with convection, radiation and condensation. In addition, heat transfer by convection is 10 times or more that of heated air, so that it has a characteristic that heating efficiency is much better than heated air, so it is heated by hot air at the same temperature. Compared to heating with saturated steam, the heating time can be drastically shortened, and the amount of steam supplied must be reduced compared to heating with saturated steam. It can be.

  In addition, saturated water vapor easily condenses and releases latent heat (evaporation enthalpy), but superheated water vapor only partially reduces its enthalpy and does not condense until it falls to saturation temperature. Therefore, unlike the case of heating with saturated steam, there is an effect that water droplets do not adhere to the surface of the sealing material or the via barrel.

  When superheated steam is employed, 150 to 180 ° C superheated steam (normal pressure superheated steam) is obtained by heating saturated steam delivered from a saturated steam generation unit equipped with a boiler that generates saturated steam at normal pressure. The superheated steam generation unit of the electromagnetic induction heating method that generates

  Moreover, in embodiment mentioned above, although the square biaxially stretched film is used as the sealing material S, it is not limited to this, The thing of various shapes according to the shape of an opening | mouth part, such as circular, is used. Can be adopted. In the case of a square sealing material, there is an advantage that no material residue is generated when a sealing material is formed by cutting a long band-shaped sealing material forming base material, and the corner portion is used as a knob for opening. Since it can be used, there is an advantage that it is not necessary to separately form a picking part for opening. Further, in the case of a circular sealing material, there is a problem that material debris is generated when the sealing material is formed by trimming a long band-shaped sealing material forming base material, but the advantage that the appearance of the mounted state is good There is.

  In the above-described embodiment, the sealing material S is formed of a polyethylene terephthalate film having a thickness of 30 μm and a heat shrinkage rate of 52%. However, the present invention is not limited to this, and vinyl chloride, polyethylene, polypropylene , Polyester, ionomer resin, polyamide, etc., can be formed of various synthetic resin materials, the thickness is 30-100 μm, and the heat shrinkage is within the range of 10-80% (including multilayer films) ) May be used as appropriate.

  Moreover, although embodiment mentioned above demonstrated sealing of the opening part MP of the via barrel B, it is not limited to this and that this invention can be applied to sealing of the opening part of various containers. Needless to say.

  INDUSTRIAL APPLICABILITY The present invention can be used when sealing a mouth portion of a container by mounting a flat heat-shrinkable film so as to cover the mouth portion of the protruding container.

DESCRIPTION OF SYMBOLS 1 Sealing system 10 Sealing material supply apparatus 10A Support plate 11 Continuous delivery unit 12 Accumulator 13 Perforation forming unit 14 Intermittent delivery unit 15 Cutting unit 16 Belt transport unit 17 Mark sensor 18 Perforation position adjustment unit 19 Joint detection unit 20 Via barrel Conveying device 21 Conveying device 22 Stopper unit 23 Rotating arm 24 Roller member 30 Sealing material transfer device 31 Base member 32 Cylinder unit 32a Actuating portion 33 Suction tube 34 Suction head 40 Sealing device 41 Base member 42 Cylinder unit 42a Acting portion 43 Steam supply Pipe 44 Heating head 44a Steam discharge hole 44b Notch 45 Outer wall 46 Inner wall 46a Inner peripheral wall (regulator)
B Beer barrel MP Mouth S Sealing material

Claims (4)

A sealing device that seals the mouth of the container by covering the mouth of the protruding container using a sealing material made of a flat heat-shrinkable film,
Film pressing means for pressing from above the portion corresponding to the upper surface of the mouth of the sealing material placed on the upper surface of the mouth of the container;
A heating means for heating the sealing material placed on the upper surface of the mouth of the container while being pressed by the film pressing means;
The said heating means has a heating head which covers the opening part of a container, and heat-shrinkable film is heated with saturated water vapor | steam, superheated water vapor | steam, or a hot air, The sealing device characterized by the above-mentioned.   The heating head has a restricting portion that bends a portion protruding outward from the upper surface of the mouth portion of the sealing material placed on the upper surface of the mouth portion of the container when the heating head is put on the mouth portion of the container. The sealing device according to claim 1. A sealing system that seals the mouth of the container by covering the mouth of the protruding container using a sealing material made of a flat heat-shrinkable film,
A sealing material supply device for supplying the sealing material to the sealing material supply position;
A container transport device that intermittently transports the container while stopping at the sealing position;
A sealing material transfer device for placing the sealing material supplied to the sealing material supply position by the sealing material supply device on the upper surface of the mouth of the container that has been transported to the sealing position;
In the sealing position, using a sealing material placed on the upper surface of the mouth of the container, and a sealing device for sealing the mouth so as to wrap the mouth of the container,
The sealing device is
Film pressing means for pressing from above the portion corresponding to the upper surface of the mouth of the sealing material placed on the upper surface of the mouth of the container;
A sealing system comprising heating means for heating the sealing material placed on the upper surface of the mouth portion of the container while being pressed by the film pressing means. The sealing material transfer device includes a suction head that transports the sealing material supplied to the sealing material supply position to the sealing position in a state where the upper surface of the sealing material is sucked and held;
The sealing system according to claim 3, wherein the film pressing unit is configured by the suction head of the sealing material transfer device.

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