JP2016141397A - Packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging machine capable of performing automatic packaging processing to even a large dimension product.CONSTITUTION: A product 4 is supplied to a packaging machine body 2 in a state in which the product is sandwiched by an upper film 10 and lower film 11, then, predetermined parts of the films are sealed and cut for producing a package. The upper film is made by folding side edges 16a, 17a of first and second upper films 16, 17 which are fed from two raw fabric rolls 12, 13 by end folding rollers 20, 21 in midway of transport, for approaching the first and second upper films, then sealing and connecting the first and second upper films by a film connecting seal device 24. Similarly the lower film is made by connecting first and second lower films 36, 37 in midway of transport. Therefore, the upper film and lower film whose widths are wider than a maximum film width of one raw fabric roll, can be provided to the packaging machine body, and a width dimension of the package which can be produced, becomes larger.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging machine.

  For example, for the purpose of saving energy as various heat insulation / heating / cooling devices such as freezers, household refrigerators, heat insulation machines, commercial showcases, and heat insulation materials used in cold cars and cold storage warehouses. Therefore, vacuum heat insulating materials with high heat insulating performance are being adopted. As disclosed in Patent Document 1 and the like, this vacuum heat insulating material is composed of a package in which various heat insulating materials having low thermal conductivity called cores / core materials are wrapped and sealed with a packaging film. When sealing, the inside is depressurized to a vacuum state. Moreover, the core material in the package is in a compressed state.

  In order to manufacture the package that constitutes the vacuum heat insulating material, for example, a bag core that is compressed by hand is packed into a bag body that is open on one side, and then the internal air is exhausted from one side that is open This is done by sealing and sealing one side. The core material may be a molded body that has been solidified in a compressed state before being stored in the bag body, or after being stored in the bag body, the core material will be in a compressed state due to internal evacuation and degassing. There are also.

JP 2005-207556 A Japanese Patent Laid-Open No. 7-40912

  In the above-described manual bagging operation, the number of manufactured items per unit time cannot be increased too much. Therefore, instead of manually bagging as such, it is conceivable to use a packaging machine disclosed in, for example, Patent Document 2 as a base and automatically wrap a product in a compressed state with a packaging film.

  That is, when packaging automatically using a packaging machine, the packaging film is set in a packaging machine with a roll of roll-shaped film wound on the packaging machine, and continuously fed from the original roll to the packaging machine body. To do. On the other hand, the core material used as a product is conveyed with a predetermined pitch by a product conveyance supply device, and is sequentially supplied to the packaging machine body. And a core material is enclosed with a strip | belt-shaped film in a packaging machine main body, and a sealing process, a cutting process, etc. are performed.

  By the way, the shape of the core material finally stored in the package is often a thin sheet that is appropriately compressed. And the vacuum heat insulating material which concerns on the above-mentioned is mounted in the household appliances aiming at cold storage, cooling, etc., for example in a refrigerator, but the dimension shape of one vacuum heat insulating material with the enlargement of recent household appliances. Also grows. Moreover, the vacuum heat insulating material etc. which are applied to a building etc. need a bigger dimension shape thing.

  Along with this, a wide packaging film is required, but the maximum film width of the packaging film supplied by the raw roll is determined by the limit of the film width that can be produced. Therefore, the width of the vacuum heat insulating material (the length in the direction orthogonal to the conveyance direction of the packaging film in the packaging machine) is limited, and it may be impossible to manufacture a vacuum heat insulating material having a required large size and shape. There are challenges.

  In order to solve the above-described problems, the packaging machine of the present invention includes (1) an upper film supply unit that supplies an upper film to the packaging machine body, a lower film supply unit that supplies a lower film to the packaging machine body, Product supply means for supplying a product to the packaging machine body, means for conveying the supplied product sandwiched from above and below by the upper film and the lower film, and the conveying direction of the upper film and the lower film; The packaging machine main body includes end sealing means for sealing and cutting in a crossing direction, and side sealing means for sealing at least one side edge of the upper film and the lower film. The upper film supply means includes a first upper film continuously fed from the first upper raw roll, a second upper film continuously fed from the second upper original roll, End side bending means for bending one side edge of the first upper film and one side edge of the second upper film so as to oppose the sealant surface, and the side edges bent by the end bending means And a film joining sealing means for heat-sealing and joining the first upper film and the second upper film to form the upper film. The lower film supply means includes a first lower film continuously fed out from the first lower original roll, and a conveying means for conveying the second lower film continuously drawn out from the second lower original roll, respectively. An end bending means for bending one side edge of the first lower film being conveyed and one side edge of the second lower film so as to oppose the sealant surface; and the end bending means bent by the end bending means The side edges are heat-sealed, and the first lower film and the second lower film are joined to each other, and a film joint sealing means for forming the lower film is provided.

  According to the present invention, the upper film and the lower film are connected to each other at the two film side edges to form a film having a large film width. Therefore, it is possible to wrap the product having a width greater than any of the film width of the first upper film, the film width of the second upper film, the film width of the lower film, and the film width of the second lower film. it can. That is, since there is an upper limit on the film width of one original roll, if the upper film and the lower film are each formed of one film, the width of the product is the upper limit of the film width of the original roll. However, according to the present invention, a large product exceeding the upper limit can be packaged.

  And in this invention, while providing the edge part bending means which bends a side edge during the conveyance of the film which was continuously drawn out from the original fabric roll, and provided the film joint sealing means, it was drawn out from the two original fabric rolls. The two films are automatically joined to each other in the middle of their conveyance to form a wide film. Accordingly, even a wide product can be continuously subjected to automatic packaging.

  (2) The portion where the side edge of the first upper film and the side edge of the second upper film are joined together, and the side edge of the first lower film and the side edge of the second lower film are joined together. It is recommended that the parts do not overlap in the vertical direction. When such a configuration is adopted, when the upper film and the lower film are sealed by the end seal device, the maximum number of the overlapping films can be suppressed, and the sealing can be surely performed.

  (3) A packaging machine according to the present invention includes a packaging machine body, a film supply unit that supplies a packaging film to the packaging machine body, and a product supply unit that supplies a product to the packaging machine body. The means includes a first film that is continuously fed from the first original roll, a conveying means that conveys the second film that is continuously drawn from the second original roll, and one of the first films being conveyed. End side bending means for bending the side edge of the second film and one side edge of the second film so that the sealant surface is opposed, and the side edges bent by the end part bending means are heat-sealed, and the first film And a film linking seal means for connecting the second film and the second film to form the wrapping film, and the wrapping machine body includes a wrapping film that is continuously supplied. A bag forming means formed in a cylindrical shape, a center seal device that seals both side edges of the packaging film formed in a cylindrical shape, and a downstream side of the center seal device that seals in the width direction of the packaging film -An end seal device for cutting was provided.

  Similarly to the above-described invention of (1), this invention also forms a film having a large film width by joining two film side edges of a packaging film that wraps a product for pillow packaging. Therefore, since there is an upper limit on the film width of one original fabric roll, if the upper film and the lower film are each composed of one film, the width of the product is the upper limit value of the film width of the original fabric roll. However, according to the present invention, a large product exceeding the upper limit can be pillow-wrapped.

  And in this invention, while providing the edge part bending means which bends a side edge during the conveyance of the film which was continuously drawn out from the original fabric roll, and provided the film joint sealing means, it was drawn out from the two original fabric rolls. The two films are automatically joined to each other in the middle of their conveyance to form a wide film. Accordingly, even a wide product can be continuously subjected to automatic packaging.

  (4) It is preferable that the portion where the side edge of the first film and the side edge of the second film are joined together with the center seal portion sealed by the center seal device does not overlap in the vertical direction. When such a configuration is adopted, when the cylindrical packaging film is sealed in the lateral direction by the end seal device, the maximum number of overlapping films can be suppressed, and the sealing can be surely performed.

  (5) The end bending means is a roller for transferring each film, and when the film is transferred to the roller, the side edge of the film protrudes outward from the end of the roller. good. The side edge is bent only by moving the film along the circumference of the film. Therefore, a simple configuration and a small space for performing the bending process may be sufficient.

  (6) The said product is good to use it as the core material which comprises a vacuum heat insulating material. As the vacuum heat insulating material increases, the number of objects to be mounted and the area to be mounted are large. According to the present invention, it is possible to manufacture a vacuum heat insulating material having a large dimension that cannot be conventionally handled.

  (7) The end seal device may be a mobile seal device provided with a sealer in which a sealer sandwiching a film moves in a direction intersecting the film transport direction. According to the present invention, since the film width becomes long, if a configuration is adopted in which the film is sandwiched and sealed at once by a pair of upper and lower sealers that cross the film as in a commonly used end seal device, the seal device becomes larger. . Therefore, it is good because it can be made small by making it mobile.

  In this case, for example, the moving sealer may be a bar sealer, and a press roller may be disposed behind the sealer in the traveling direction, and the heated film may be bonded by pressing the heated film. The sealer may be constituted by a rotary press roller equipped with a heater. Further, the sealer may be bonded by pressurizing and heating the film in multiple stages while moving intermittently.

  ADVANTAGE OF THE INVENTION According to this invention, the package which wrapped the vacuum heat insulating material and other large sized products can be manufactured automatically, supplying a film continuously. Moreover, in this invention, the width dimension of the package which can be manufactured can be enlarged.

(A) is a front view which shows suitable 1st embodiment of the packaging machine which concerns on this invention, (b) is an enlarged front view which shows the end seal apparatus and its periphery. It is a top view which shows suitable 1st embodiment of the packaging machine which concerns on this invention. (A) is an enlarged front view which shows the principal part of this invention, (b) is a side view which shows an edge part bending roller. (A) is a front view which shows a side seal apparatus, (b) is the side view. (A) is a perspective view which shows an example of the package body manufactured with the packaging machine of this embodiment, (b) is the side view. (A) is a front view which shows suitable 2nd embodiment of the packaging machine which concerns on this invention, (b) is an enlarged front view which shows the principal part. It is a top view which shows suitable 2nd embodiment of the packaging machine which concerns on this invention. It is a front view which shows suitable 3rd embodiment of the packaging machine which concerns on this invention. FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the present invention is not construed as being limited thereto, and various changes, modifications, and improvements can be made based on the knowledge of those skilled in the art without departing from the scope of the present invention.

  1 to 3 show a first embodiment of a packaging machine according to the present invention. The packaging machine 1 of the present embodiment includes a packaging machine main body 2, a film supply device 3 that supplies a packaging film to the packaging machine main body 2, and a product conveyance supply device 5 that supplies a product 4 to the packaging machine main body 2. In this embodiment, the product 4 is a core material for constituting a vacuum heat insulating material. This packaging machine 1 wraps a product 4 as a core material constituting a vacuum heat insulating material with a packaging film and seals and cuts the position as appropriate, thereby producing an intermediate product with one side opened. And the manufactured intermediate product manufactures a vacuum heat insulating material by sucking and exhausting the air inside the intermediate product with another packaging machine to make a vacuum and sealing one side opened.

  The packaging machine 1 manufactures an intermediate product with one side opened as described above by sandwiching the product 4 from above and below between the upper film 10 and the lower film 11 and sealing three sides. And the product 4 to be packaged in the present embodiment is a flat rectangular sheet, and the lateral width in the transport direction in the packaging machine body 2 is longer than the lateral width of one raw roll constituting the packaging film. It is a large one. Therefore, the upper film 10 and the lower film 11 are formed by joining two belt-like films continuously drawn from two original fabric rolls, and the film widths of the upper film 10 and the lower film 11 are set. A wide width exceeding the limit of the film width using a single roll was made possible. A specific configuration of the film supply apparatus 3 that performs such processing is as follows.

  The film supply device 3 includes an upper film supply device 6 for supplying the upper film 10 to the packaging machine body 2 and a lower film supply device 7 for supplying the lower film 11 to the packaging machine body 2. The upper film supply device 6 includes a first upper rotation support shaft 14 and a second upper rotation support shaft 15 that rotatably support the first upper original roll 12 and the second upper original roll 13 on the downstream side of the packaging machine body 2. Is provided. The first upper rotation support shaft 14 and the second upper rotation support shaft 15 can be detachably mounted on the original roll, and include a mechanism that fixes the original roll in a mounted state and rotates integrally. The first upper rotation support shaft 14 and the second upper rotation support shaft 15 are arranged in parallel so as to be shifted back and forth. In the present embodiment, the first upper rotation support shaft 14 and the second upper rotation support shaft 15 are installed at the same height. Furthermore, as shown in FIG. 2, the film width W <b> 1 of the first upper original fabric roll 12 is longer than the film width W <b> 2 of the second upper original fabric roll 13. Furthermore, the 1st upper original fabric roll 12 and the 2nd upper original fabric roll 13 are set to each rotation support shaft so that the edge parts which mutually adjoin may partly overlap in an axial direction. And since the film width W1 of the 1st upper original fabric roll 12 was made longer than the film width W2 of the 2nd upper original fabric roll 13 as mentioned above, said overlapping part is between the end surfaces which both upper original fabric rolls mutually separate. It is in a position that is offset from the middle distance point.

  Each raw roll is formed by winding a belt-like film. And the original fabric roll with which each rotation support shaft was mounted | worn rotates with a rotation support shaft, and a strip | belt-shaped film is drawn | fed out continuously with rotation. The rotation support shaft may be rotated by receiving, for example, a rotation output of a drive motor linked to the rotation support shaft, or by pulling out a belt-like film by a conveying force by a feed roller. Also good.

  The first upper film 16 that is continuously drawn out from the first upper original fabric roll 12 is passed over a plurality of various rollers 18 and guided to a first end bending roller 20. The first end bending roller 20 is set such that its axial length is shorter than the film width W1 of the first upper original roll 12, that is, the film width of the first upper film 16. Then, when the first upper film 16 is passed over the first end folding roller 20, the side edge 16 a on the second upper film 17 side fed out from the second upper original roll 13 is placed on the first end folding roller 20. It shall be in the state of protruding outward. Then, as shown in FIG. 3, the side edge 16 a that protrudes outside the first end bending roller 20 moves along the circumferential surface of the first end bending roller 20, and the central axis of the roller. The side edge 16a of the flat first strip-shaped upper film 16 is bent and is bent.

  Similarly, the second upper film 17 continuously drawn out from the second upper original fabric roll 13 is passed over a plurality of various rollers 18 and guided to the second end bending roller 21. As the second end bending roller 21, a roller whose axial length is set shorter than the film width W2 of the second upper original roll 13, that is, the film width of the second upper film 17, is used. Then, when the second upper film 17 is passed over the second end bending roller 21, the side edge 17 a on the first upper film 16 side is in a state protruding from the second end bending roller 21. Then, as shown in FIG. 3, the side edge 17 a protruding outward from the second end bending roller 21 moves along the circumferential surface of the second end bending roller 21, and the central axis of the roller. The side edge 17a of the flat upper belt-like second film 17 is bent and is bent.

  The first upper film 16 and the second upper film 17 move along the first end bending roller 20 and the second end bending roller 21, respectively, so that the transport direction is changed downward. And the bent side edges 16a and 17a contact each other. Moreover, the 1st upper film 16 and the 2nd upper film 17 turn into the sealant surface which can be heat-sealed, and the surface which the both-side edges 16a and 17a contact turns into a sealant surface.

  Further, a suction table 22 is disposed below the first end bending roller 20 and the second end bending roller 21. The suction table 22 includes a main body box having a suction surface that can come into contact with the first upper film 16 and the second upper film 17 that move downward, and suction means linked to the main body box. A large number of through holes are formed on the suction surface. As a result, the suction surface is sucked through the through hole in accordance with the operation of the suction means, and the first upper film 16 and the second upper film 17 are sucked by the suction surface and conveyed in a tensioned state. Further, the side edges 16a and 17a move in a state extending in a direction orthogonal to the suction surface while being in contact with or close to each other.

  A film connecting and sealing device 24 is disposed below the suction table 22. The film connecting and sealing device 24 includes a pair of sealers that sandwich and heat both side edges 16a and 17a from both sides. Thus, by passing through the pair of sealers, the side edges 16a and 17a are heat-sealed and integrated, and a single wide upper film 10 is formed. The film width of the upper film 10 is close to the total length of the film width W1 of the first upper film 16 and the film width W2 of the second upper film 17. Further, the film connecting and sealing device 24 has a high sealing strength and a high degree of adhesion between the side edges 16a and 17a, so that the joint surfaces of the side edges 16a and 17a are peeled off over a long period of time, and air leakage from the joint surfaces is prevented. Use something that doesn't exist.

  The upper film 10 formed by joining the first upper film 16 and the second upper film 17 in this manner is passed over a free roller 28, a dancer roller 26, a feed roller 27, and the like, and is conveyed along a predetermined path. It is guided to the upstream side of the packaging machine body 2 and is continuously supplied to the packaging machine body 2. And the upper film 10 supplied to the packaging machine main body 2 is conveyed with the product 4 in the state which covered the upper surface of the product 4. FIG.

  On the other hand, the lower film supply device 7 has the same configuration as the upper film supply device 6 described above. That is, the lower film supply device 7 includes a first lower rotation support shaft 34 that rotatably supports the first lower original fabric roll 32 and the second lower original fabric roll 33 at a predetermined lower position downstream of the packaging machine body 2. The second lower rotation support shaft 35 is provided. The first lower rotation support shaft 34 and the second lower rotation support shaft 35 can be detachably mounted on the original roll, and include a mechanism that fixes the original roll in a mounted state and rotates integrally. The first lower rotation support shaft 34 and the second lower rotation support shaft 35 are shifted in the front-rear direction and arranged in parallel. In the present embodiment, the first lower rotation support shaft 34 and the second lower rotation support shaft 35 are installed at the same height. Furthermore, as shown in FIG. 2, the film width W <b> 3 of the first lower original fabric roll 32 is longer than the film width W <b> 4 of the second lower original fabric roll 33. Furthermore, the first lower original fabric roll 32 and the second lower original fabric roll 33 are set on the respective rotation support shafts so that the end portions close to each other partially overlap in the axial direction. And since the film width W3 of the 1st lower original fabric roll 32 was made longer than the film width W4 of the 2nd lower original fabric roll 33 as above-mentioned, said overlapping part separates from each other of both upper original fabric rolls. It is in a position deviated from the intermediate distance point between the end faces.

  Further, as is clear from FIG. 2 and the like, the first upper original fabric roll 12 and the second lower original fabric roll 33 deviate from the intermediate distance point between the adjacent end portions, and the first upper original fabric roll 12 described above. And the direction which shifted from the middle distance point of the mutually adjacent ends of the 2nd upper original fabric roll 13 was reversed.

  Each raw roll is formed by winding a belt-like film. And the original fabric roll with which each rotation support shaft was mounted | worn rotates with a rotation support shaft, and a strip | belt-shaped film is drawn | fed out continuously with rotation. The rotation support shaft may be rotated by receiving, for example, a rotation output of a drive motor linked to the rotation support shaft, or by pulling out a belt-like film by a conveying force by a feed roller. Also good.

  The first lower film 36 continuously fed out from the first lower raw roll 32 is stretched over a plurality of various rollers 38 and guided to the third end bending roller 40. As the third end bending roller 40, a roller whose length in the axial direction is set shorter than the film width W3 of the first lower original roll 32, that is, the film width of the first lower film 36 is used. When the first lower film 36 is passed over the third end bending roller 40, the side edge 36 a on the second lower film 37 side fed out from the second lower original roll 33 is moved to the third end bending roller 40. It shall be in the state of protruding outside. Then, the side edge 36a protruding to the outside of the third end bending roller 40 is inclined toward the central axis side of the roller when moving along the circumferential surface of the third end bending roller 40, and has a flat belt shape. The side edge 36a of the first lower film 36 is bent.

  Similarly, the second lower film 37 continuously drawn out from the second lower original roll 33 is stretched around a plurality of various rollers 38 and guided to the fourth end bending roller 41. As the fourth end bending roller 41, a roller whose length in the axial direction is set shorter than the film width W4 of the second lower original roll 33, that is, the film width of the second lower film 37 is used. When the second lower film 37 is passed over the fourth end folding roller 41, the side edge 37 a on the first lower film 36 side is in a state of protruding out of the fourth end folding roller 41. Then, the side edge 37a protruding to the outside of the fourth end bending roller 41 is inclined toward the central axis side of the roller when moving along the circumferential surface of the fourth end bending roller 41, and has a flat belt shape. The side edge 37a of the second lower film 37 is bent.

  The first lower film 36 and the second lower film 37 move along the third end folding roller 40 and the fourth end folding roller 41, respectively, so that the transport direction is changed downward. And the bent side edges 36a and 37a contact each other. Moreover, the 1st lower film 36 and the 2nd lower film 37 become a sealant surface in which one side can be heat-sealed, and the surface which both side edges 36a and 37a contact becomes a sealant surface.

  Further, a suction table 42 is disposed above the third end bending roller 40 and the fourth end bending roller 41. The suction table 42 includes a main body box having a suction surface that can come into contact with the first lower film 36 and the second lower film 37 that move upward, and suction means linked to the main body box. A large number of through holes are formed on the suction surface. As a result, the suction surface is sucked through the through hole in accordance with the operation of the suction means, and the first lower film 36 and the second lower film 37 are sucked by the suction surface and conveyed while being stretched. Further, the side edges 36a and 37a move in a state extending in a direction orthogonal to the suction surface while being in contact with or close to each other.

  A film connecting and sealing device 44 is disposed above the suction table 42. The film connecting and sealing device 44 includes a pair of sealers that sandwich and heat both side edges 36a and 37a from both sides. Thus, by passing through the pair of sealers, the side edges 36a and 37a are heat-sealed and integrated, and a single wide lower film 11 is formed. The film width of the lower film 11 is close to the total length of the film width W3 of the first lower film 36 and the film width W4 of the second lower film 37.

  The lower film 11 formed by joining the first lower film 36 and the second lower film 37 in this manner is passed over a free roller 58, a dancer roller 56, a feed roller 57, and the like, and is conveyed along a predetermined path. It is guided to the upstream side of the packaging machine body 2 and is continuously supplied to the packaging machine body 2. And it is conveyed with the product 4 in the state which the product 4 got on the lower film 11 supplied to the packaging machine main body 2. FIG.

  In this embodiment, the total length of each end folding roller is shorter than the film width of each film. However, it is not always necessary to shorten the length, and one side edge of the film to be extended projects outside the end folding roller. It should be set to do.

  The product conveying / supplying device 5 is disposed on the downstream side of the belt conveyor device 8, the conveying surface being installed in a horizontal plane, and conveying the product 4 placed on the conveying surface forward. The product holding part 9 is provided. If the product 4 is sandwiched between the belt conveyor device 8 and the product restraining portion 9 and the belt conveyor device 8 is rotationally driven in this state, the sandwiched product 4 receives a forward conveying force, and the next stage Supplied to the packaging machine body 2. Moreover, the product holding | suppressing part 9 is good also as a belt conveyor, for example. If it does in that way, the conveyance force from the said up-down to the front can be given in the state which pinched | interposed the product 4 firmly from up and down, and it can convey reliably.

  The packaging machine body 2 includes an end seal device 50 on the upstream product carry-in side. The end seal device 50 is a device that seals and cuts predetermined portions of the upper film 10 and the lower film 11 in a direction orthogonal to the transport direction. The predetermined part is a spatial part of the front and rear products 4. In this embodiment, since it is provided on the product carry-in side of the packaging machine main body 2, the product 4 waiting at the front end position of the product conveyance supply device 5 and the product 4 supplied to the packaging machine main body 2 immediately before are provided. Seal and cut between.

  By this sealing and cutting, the upper film 10 and the lower film 11 supplied to the packaging machine main body 2 by the film supply device 3 are sealed and joined at the product carry-in part of the packaging machine main body 2 and are sealed. The cut part is cut. Thereby, the preceding upper film 10 and the lower film 11 positioned on the downstream side of the end seal device 50 are separated from the subsequent continuous film, and the intermediate body 51 is formed in a state in which the product 4 is wrapped in a cylinder shape. . Both sides of the intermediate body 51 are in an opened state.

  The upper film 10 and the lower film 11 remaining after the intermediate body 51 is cut off are arranged on the upstream side of the end seal device 50 and in front of the product 4 transported from the product transport supply device 5 so as to block the transport path. Is done. Therefore, when the product 4 is carried out from the product conveyance supply device 5, the front end surface of the product 4 comes into contact with the upper film 10 and the lower film 11. When the product 4 further moves forward, the upper film 10 and the lower film 11 are urged by the product 4 and pulled forward in the traveling direction, and the upper film 10 and the lower film 11 are placed in the packaging machine body 2. 4 is sandwiched from above and below, and moves forward in the packaging machine body 2. Then, the conveyance is temporarily stopped at an appropriate timing after the rear end of the product 4 passes through the end seal device 50, and the film portions of the upper film 10 and the lower film 11 where the product 4 does not exist by the end seal device 50 as described above. Seal and cut.

  Further, the connecting portion 10b on the upper film 10 side (the connecting portion of the side edge 16a of the first upper film 16 and the side edge 17a of the second upper film 17) and the connecting portion 11b on the lower film 11 side (first lower film 36). The formation position of the side edge 36a of the second lower film 37 and the side edge 37a of the second lower film 37 is shifted laterally without overlapping in the vertical direction. Therefore, when the sealer of the end seal device 50 sandwiches and seals the upper film 10 and the lower film 11, the overlapping of the film portions does not become extremely thick at the connecting portion, and the sealing can be ensured.

  Furthermore, the product 4 used in the present embodiment is wide, and accordingly, the film widths of the upper film 10 and the lower film 11 are increased. Therefore, a pair of upper and lower sealers such as rotary type and box motion, which are generally used as end seal devices, are used, and the pair of sealers collectively sandwich the film over the entire length in the lateral direction and seal it by applying pressure and heating. At the same time, the film portion sealed by the cutter mounted in the sealer is not cut, but the sealer moves in a direction perpendicular to the film transport direction. A large sealer may be applied by preparing a long sealer in the film width direction.

  The specific configuration of the mobile end seal device 50 of this embodiment is as follows. As shown in FIG. 1, an upper sealer portion 50a and a lower sealer portion 50b are provided with an upper film 10 and a lower film 11 interposed therebetween. The upper sealer portion 50a and the lower sealer portion 50b are configured to move in the film width direction synchronously while maintaining the facing state. The upper sealer portion 50a and the lower sealer portion 50b are each composed of a pair of bar sealers that sandwich the upper film 10 and the lower film 11 from above and below, a pair of upper and lower nip rollers respectively disposed on the front and rear sides of the bar sealer, and a pair of upper and lower presses. Provide with rollers. The nip roller is disposed in front of the end seal device in the traveling direction, and the press roller is disposed behind the end seal device in the traveling direction. The nip roller is made of rubber and sandwiches the upper film 10 and the lower film 11 with a predetermined pressure. The bar sealer is adjacent to both side edges of the upper film 10 and the lower film 11 and heats the film portion. The press roller pressurizes both side edges of the upper film 10 and the lower film 11 heated by the bar sealer with a predetermined pressure, and heat-seals the film portion.

  The pair of upper and lower bar sealers, the nip roller, and the press roller are linked to a mechanism that moves closer to and away from each other, and transitions between a standby posture that is separated from each other and an operation posture that allows the upper film 10 and the lower film 11 to be sandwiched by approaching each other. . Then, the end seal device 50 waits in a standby posture, and the upper sealer portion 50a and the lower sealer portion 50b approach each other and sandwich the upper film 10 and the lower film 11 at a predetermined timing after the leading product 4 passes. Transition to posture. Next, the upper sealer part 50a and the lower sealer part 50b move in the width direction of the film and cross the upper film 10 and the lower film 11. Thereby, the film part which the end seal apparatus 50 passed is end-sealed.

  Further, in the present embodiment, the upper sealer portion 50a and the lower sealer portion 50b are provided with cutters after the further moving direction of the press roller. This cutter is, for example, a rotary cutter, and when the upper sealer portion 50a and the lower sealer portion 50b are in the operating posture, the film is sandwiched between the upper and lower portions to cut the seal portion. Therefore, when the upper sealer portion 50a and the lower sealer portion 50b in the operating posture move in the film width direction, they are sealed and cut in the film width direction.

  Furthermore, in this embodiment, the restraining members 53 are provided on both sides in the traveling direction of the upper sealer portion 50a and the lower sealer portion 50b. The upper sealer 50a and the lower sealer 50b are moved in a state where the upper film 10 and the lower film 11 are sandwiched from above and below by the holding member 53, and the film is securely sealed and cut.

  The packaging machine main body 2 includes a transport device 60 over the entire length from the front in the traveling direction of the end seal device 50. The conveyance device 60 includes a first conveyor device 61, a second conveyor device 62, and a third conveyor device 63 that are sequentially arranged from the upstream. The 1st conveyor apparatus 61 and the 2nd conveyor apparatus 62 are belt conveyor apparatuses provided with the several endless belt each arrange | positioned in parallel, and convey the intermediate body 51 by rotation of the applied endless belt. Further, a restraining conveyor device 64 is provided above the first conveyor device 61. As a result, the product 4 supplied to the packaging machine body 2 is sandwiched between the upper film 10 and the lower film 11 from above and below by the first conveyor device 61 and the restraining conveyor device 64, and is transported firmly forward. .

  The second conveyor device 62 conveys the intermediate 51 formed by sealing and cutting with the end seal device 50. A side seal device 65 is disposed outside one side of the second conveyor device 62. As shown in FIG. 2 and the like, the side seal device 65 is for heat-sealing one side edge of the upper film 10 and the lower film 11.

  As shown in FIG. 4, the side seal device 65 includes a pair of bar sealers 66 that sandwich the films from above and below, a pair of upper and lower nip rollers 68 disposed on both front and rear sides of the bar sealer 66, and a pair of upper and lower press rollers 69. . The nip roller 68 is disposed in front of the side seal device 65 in the traveling direction (the arrow direction in FIG. 4), and the press roller 69 is disposed behind the side seal device 65 in the traveling direction. In addition, it is good also as a structure which arrange | positions the press roller 69 also in the advancing direction of a film. In this way, the side seal device 65 can press and bond the upper film 10 and the lower film 11 even when the bar sealer 66 backs, and the bar sealer 66 at the end stop position of the side seal device 65. It is possible to add a function capable of bonding a heated unbonded film portion.

  The nip roller 68 is made of rubber and sandwiches both side edges of the upper film 10 and the lower film 11 with a predetermined pressure. The bar sealer 66 is adjacent to both side edges of the upper film 10 and the lower film 11 and heats the film portion. The press roller 69 pressurizes both side edges of the upper film 10 and the lower film 11 heated by the bar sealer 66 with a predetermined pressure, and heat-seals the film portion.

  The pair of upper and lower bar sealers 66, the nip roller 68, and the press roller 29 are configured to be openable and closable, and transition between a standby position separated from each other and an operation position where the upper film 10 and the lower film 11 can be sandwiched by approaching each other. . Specifically, the pair of upper and lower bar sealers 66 move up and down to approach and separate from each other, and the upper film 10 and the lower film 11 that pass between the standby positions where the opposing seal surfaces are separated and the seal surfaces approach each other. Transition between operating positions to heat. In the pair of upper and lower nip rollers 68, the support plate 68a to which the upper nip roller 68 is attached rotates forward and backward with the lower end edge as the rotation center, and at the standby position, the upper side of the support plate 68a opens outward as shown in FIG. Tilt. As a result, the rotating shaft of the upper nip roller 68 is inclined upward integrally with the support plate 68a, and the upper nip roller 68 and the lower rotating shaft are separated from the horizontal nip roller 68. Further, in the operating position, the support plate 68a stands up from the state shown in FIG. 4, and the rotation shaft of the upper nip roller 68 becomes horizontal with the support plate 68a, so that the upper and lower nip rollers 68 come into contact with each other. The same applies to the press roller 69. The support plate 69a to which the upper press roller 69 is attached is rotatably arranged to take the standby position and the operating position.

  A pair of upper and lower bar sealers 66, a nip roller 68, and a press roller 69 are installed on a moving table 70. The moving table 70 is linked to a guide rail 71 arranged along the film conveyance direction. The guide rail 71 is formed in a predetermined region along the transport direction. As a result, the movable table 70, and thus the bar sealer 66, the nip roller 68, and the press roller 69 reciprocate in the installation area of the guide rail 71.

  Further, in the present embodiment, the holding member 54 that suppresses both sides of the film portion that the bar sealer 66 or the like contacts is provided. The holding member 54 is fixedly installed so as to cover the moving range of the side seal device 65. As a result, the bar sealer 66, the nip roller 68, and the press roller 69 come into contact with each other while the film is tight, and the film is reliably sealed without sagging.

  The sealing process using the side seal device 65 is performed as follows. As shown in FIG. 2, the side seal device 65 waits at a standby position on the downstream side in the transport direction with the pair of upper and lower bar sealers 66, nip rollers 68, and press rollers 69 separated from each other as shown in FIG. The intermediate body 51 is conveyed by the second conveyor device 62 and temporarily stops at an appropriate position. Then, a pair of upper and lower bar sealers 66 of the side seal device 65 are brought close to the side edges of the intermediate body 51 (the side edge 10a of the upper film 10 and the side edge 11a of the lower film 11), and the intermediate body is formed by the nip roller 68 and the press roller 69. 51 side edges (side edge 10a of upper film 10, side edge 11a of lower film 11) are sandwiched. In this state, the moving table 80 moves backward in the film traveling direction. Then, the pair of upper and lower bar sealers 66, the nip roller 68, and the press roller 69 are sealed while moving along the side edges 10a and 11a while sandwiching the side edges 10a and 11a. Thereby, as shown in FIG. 5, the side edge 10a of the upper film 10 and the side edge 11a of the lower film 11 are heat-sealed, and the side seal part 73 is formed. Thereby, the package body 75 in which the three sides of the intermediate body 51 are sealed is manufactured.

  As is apparent from FIG. 5, the package 75 is configured such that the upper film 10 is formed by joining the first upper film 16 and the second upper film 17, and the lower film 11 is composed of the first lower film 36 and the second lower film. Since 37 are connected together, a large size can be formed in the film width direction. In addition, the open | released one side is sealed by a post process, and becomes a four-side seal packaging body of the last form. Therefore, in the four-sided sealed package, one larger than the maximum dimension of the film width of one original fabric roll can be manufactured. Moreover, the formation position of the connection part 10b by the side of the upper film 10 and the connection part 11b by the side of the lower film 11 has shifted | deviated sideways, without overlapping in an up-down direction.

  On the other hand, when one side is side-sealed and the package body 75 is manufactured, the side seal device 65 returns to the standby position, and the second conveyor device 62 resumes operation to convey the package body 75 to convey the third conveyor device. Move to 63. The 3rd conveyor apparatus 63 is provided with many free rollers which have a rotating shaft in the direction orthogonal to a conveyance direction. The package 75 receives the conveying force from the second conveyor device 62 and moves while sliding on the free roller.

  A carry-out conveyor device 78 is disposed on the downstream side of the third conveyor device 63. The carrying direction of the carry-out conveyor device 78 is different from the third conveyor device 63 in the orthogonal direction. Further, a transfer device 76 is disposed above the third conveyor device 63 and the carry-out conveyor device 78. The transfer device 76 gives a forward conveying force to the package 75 on the third conveyor device 63, and transfers the package 75 to the carry-out conveyor device 78. And the carry-out conveyor apparatus 78 is comprised from a belt conveyor apparatus, and carries the package 75 out.

  6 and 7 show a second embodiment of the present invention. In this embodiment, the example applied to the pillow packaging machine is shown. That is, the pillow wrapping machine 1 'includes a wrapping machine main body 2', a film supply device 3 'for supplying the wrapping film 10' to the wrapping machine main body 2 ', and a product supply for supplying the product 4 to the wrapping machine main body 2'. Part 5 '. In this pillow wrapping machine 1 ′, a wide product 4 that is fed out from a single raw roll and cannot be wrapped by a strip-shaped wrapping film of one cell is subjected to pillow wrapping. Therefore, also in this embodiment, as in the first embodiment, the side edges of two films are bonded together to form one wide packaging film, and the wide packaging film is used. Pillow packaging. Moreover, the same structure was used for bonding two films. The configuration of the pillow packaging machine 1 'will be briefly described as follows.

  The product supply unit 5 ′ omits the illustration of the specific configuration, but as shown in FIG. 7, the product supply unit 5 ′ transports the product 4 side by side in a direction perpendicular to the transport direction of the packaging machine body 2, and the leading product 4 In order from the bag entrance 87 in order. Then, the product supply unit 5 ′ sequentially supplies the products 4 into the bag making device 87 at a predetermined timing.

  The film supply device 3 ′ includes a first rotation support shaft 14 ′ and a second rotation support shaft that rotatably support the first original roll 12 ′ and the second original roll 13 ′ on the upstream side of the packaging machine body 2. 15 '. The first rotation support shaft 14 ′ and the second rotation support shaft 15 ′ can be detachably mounted on the original roll, and include a mechanism that fixes the original roll in a mounted state and rotates integrally. The first rotation support shaft 14 ′ and the second rotation support shaft 15 ′ are arranged in parallel by being shifted forward and backward. In the present embodiment, the first rotation support shaft 14 'and the second rotation support shaft 15' are installed at the same height. Furthermore, as shown in FIG. 7, the film width W5 of the first original fabric roll 12 'is longer than the film width W6 of the second original fabric roll 13'. Furthermore, the first original fabric roll 12 'and the second original fabric roll 13' are set on the respective rotation support shafts so that the end portions close to each other partially overlap in the axial direction. Since the film width W5 of the first original roll 12 'is longer than the film width W6 of the second original roll 13' as described above, the overlapping portions are separated from each other. It is in a position deviated from the intermediate distance point between the end faces.

  The first film 16 ′ continuously fed from the first original fabric roll 12 ′ is stretched over a plurality of various rollers 18 ′ and guided to the fifth end bending roller 20 ′. Then, when the first film 16 ′ is passed over the fifth end folding roller 20 ′, the side edge 16 a ′ on the second film 17 ′ side fed out from the second raw roll 13 ′ is bent at the fifth end folding. It is assumed that it protrudes outside the roller 20 '.

  Similarly, the second film 17 ′ continuously drawn from the second original fabric roll 13 ′ is stretched over a plurality of various rollers 18 ′ and guided to the sixth end bending roller 21 ′. When the second film 17 ′ is passed over the sixth end bending roller 21 ′, the side edge 17 a ′ on the first film 16 ′ side protrudes outside the sixth end bending roller 21 ′. To do.

  As a result, the first film 16 ′ and the second film 17 ′ are inclined toward the central axis of the rollers when moving along the circumferential surfaces of the respective end bending rollers 20 ′ and 21 ′, and are flat belt-like. The side edges 16a 'and 17a' of the respective films 16 'and 17' are bent. The bent side edges 16a and 17a come into contact with each other.

  The first film 16 ′ and the second film 17 ′ are lifted and moved in a tensioned state by being sucked by the suction table 22 provided above the fifth end folding roller 20 ′ and the sixth end folding roller 21 ′. The side edges 16a and 17a move in a state extending in a direction orthogonal to the suction surface while being in contact with or close to each other. The both side edges 16a 'and 17a' that are in contact with or close to each other are sandwiched from both sides by a film connecting and sealing device 24 'and heated and pressurized to be heat sealed. As a result, the side edges 16a and 17a are heat-sealed and integrated to form a single wide packaging film 10 '.

  The wrapping film 10 ′ is stretched over various rollers and travels along a predetermined path, passes through the film drilling device 74, eliminates the slackness of the film, applies a predetermined tension, and passes through the meandering correction device 77. Thus, the meandering is corrected, the paper is conveyed in a parallel state along the conveying direction, and is continuously supplied to the packaging machine body 2 '.

  The packaging machine main body 2 ′ includes a bag making device 87 that forms a strip-shaped packaging film 10 ′ continuously supplied to the carry-in side into a cylindrical shape. This bag making device 87 is for the reverse pillow type, and both sides of the packaging film 10 'are raised upward. Then, the raised film part is gradually bent inward to cover the upper surface of the product 4, and the both side edges are brought into contact with each other or in close proximity.

  On the downstream side of the bag making device 87, an adsorption-type transport conveyor device 88 is disposed. The conveyance conveyor device 88 has a large number of through holes on the conveyance surface, and conveys the packaging film 10 ′ on the conveyance surface that has passed through the bag-making device 87 while adsorbing it.

  A center seal device 81 is provided at a predetermined position downstream of the bag making device 87. The center seal device 81 heats and pressurizes both side edges that are abutted after passing through the bag making device 87 and seals them.

  Further, a carry-out conveyor device 83 is disposed on the downstream side of the adsorption-type transport conveyor device 88. An end seal device 82 is disposed at an appropriate position on the carry-out conveyor device 83. The carry-out conveyor device 83 is a belt conveyor device and takes a conveyance surface that bypasses the installation location of the end seal device 82.

  The end seal device 82 seals and cuts a predetermined position of the packaging film 10 ′ formed in a cylindrical shape in the lateral direction. The predetermined position is an area where the product 4 between the front and rear products 4 does not exist. Further, the end seal device 82 includes a pair of upper and lower sealers, and seals when the sealer moves up and down and sandwiches the packaging film 10 '. A cutter blade is built in the sealer to cut the sealed part. By this cutting, the portion protruding downstream of the end seal device 82 is separated from the subsequent packaging film 10 ', and the package is manufactured. In the present embodiment, the position of the end seal device 82 in the front-rear direction can be changed and adjusted in accordance with the dimensions of the product 4.

  Also in this embodiment, since the side edges 16a 'and 17a' of the two films are joined together to produce a packaging film 10 'having a large size in the film width direction, it cannot be produced with a single film roll alone. Large pillow packages can be manufactured.

  Also in the present embodiment, raw rolls having different film widths are used, and the formation position of the connecting portion of the packaging film 10 '(the connecting portion between the side edge 16a' of the first film 16 'and the side edge 17a' of the second film 17 '). However, it is shifted laterally without overlapping the center seal portion in the vertical direction. Therefore, when the sealer of the end seal device 50 sandwiches and seals the packaging film 10 ′ formed in a cylindrical shape, the overlapping of the film portions does not become extremely thick at the connecting portion and can be reliably sealed. . In addition, since the other structure and effect are the same as that of 1st embodiment, the detailed description is abbreviate | omitted.

  8 and 9 show a third embodiment of the present invention. In this embodiment, as in the first embodiment, the product 4 is sandwiched from above and below by the upper film 10 and the lower film 11, and a package body is manufactured in which the periphery is sealed except for one side. In this embodiment, the mechanism for bonding two films is different.

  That is, the first upper film 16 fed out from the first upper raw roll 12 is conveyed by a plurality of rollers 18 along a predetermined path. Similarly, the second upper film 17 fed out from the second upper original fabric roll 13 is conveyed by a plurality of rollers 18 along a predetermined path. Then, a folding mechanism 85 that gradually raises the side edges of the film is provided in the middle of the transport path (path that moves horizontally). For example, the folding mechanism 85 may have a configuration similar to that of raising a side edge of a film like a bag making machine in a pillow packaging machine.

  As a result, while the first upper film 16 and the second upper film 17 move horizontally, the adjacent side edges 16a and 17a are gradually bent downward, and the side edges 16a and 17a come into contact with or approach each other. Then, the side edges 16a and 17a are sandwiched from both sides by the film connecting and sealing device 24 arranged on the downstream side of the bending mechanism 85 and heated and pressurized. Thereby, the side edges of the first upper film 16 and the second upper film 17 are heat-sealed and integrated to form a single wide upper film 10.

  Similarly, the side edge of the film is gradually raised on the horizontally moving path of the first lower film 36 and the second lower film 37 fed from the first lower original roll 32 and the second lower original roll 33. A bending mechanism 86 is provided. Then, the both side edges 36a and 37a are sandwiched from both sides by the film connecting and sealing device 44 disposed on the downstream side of the bending mechanism 86 and heated and pressurized. Thereby, the 1st lower film 36 and the 2nd lower film 37 are heat-sealed in the side edges, and are integrated, and the one wide lower film 11 is formed.

  Then, the wide upper film 10 and the lower film 11 are supplied to the packaging machine body 2 and are sealed and integrated in the width direction by the end seal device 50. In addition, since another structure and effect are the same as that of each embodiment mentioned above, the same code | symbol is attached | subjected to a corresponding member and the detailed description is abbreviate | omitted.

  In the present embodiment, the film widths of the first upper original fabric roll 12 and the second upper original fabric roll 13 are substantially equal, and the overlapping portion between the films is located near the center position. Similarly, the film widths of the first lower original fabric roll 32 and the second lower original fabric roll 33 are substantially equal. In this case, when sealing with the end seal device 50, the upper and lower connecting portions overlap, but one or both may be shifted laterally as in the above-described embodiment. Moreover, in 1st embodiment, although the upper and lower sides connected the eccentric part, you may position one or both centeringly.

  The bar sealer 46 of the side seal device 45 is for sandwiching the film and heating and pressurizing it. Alternatively, a side seal device 47 may be used that seals the film while sandwiching and moving the film between the nip roller 48 and the heated press roller 49. The means for heating and pressurizing the film is not limited to using a heating plate, and for example, a sealing method using ultrasonic waves may be used.

  Moreover, when performing various packaging processes, it is good also as a packaging apparatus and a packaging method which manufacture the package body which provided the unsealed part partially in the seal part. In the above-described embodiment, one side is opened as an unsealed part, but a part to be partially sealed may be provided. The side seal device can be configured to be able to seal in both reciprocating directions. For example, if the nip roller is changed to a press roller so that the press roller is arranged on both sides of the bar sealer, the upper and lower surfaces heated by the bar sealer can be moved in either the forward direction or the backward direction. The film can be pressed and adhered with a press roller.

  In the above-described side seal device or end seal device, the film may be heated not by the bar sealer but by a press roller having a built-in heater, and the film may be bonded by pressurizing and heating the film.

In the various embodiments and modifications described above, the product is a core material that constitutes a vacuum heat insulating material, and since it is a compressed molded body, there is no compression step when packaging with a packaging machine. , When it is necessary to compress the product when it is packaged by the packaging machine, for example, compress the product up and down before supplying it to the packaging machine body, and supply the compressed product in the film, When sealing with the side seal device, it is preferable to provide a compression means at an appropriate position, such as compressing the product together with the film up and down, and performing side sealing in the compressed state.
In the above-described various embodiments and modifications, the product is a core material that constitutes a vacuum heat insulating material, but the present invention is not limited to this and can be applied to various products.

  As described above, various aspects of the present invention have been described using the embodiments and the modifications. However, these embodiments and descriptions are not intended to limit the scope of the present invention, and are for understanding the present invention. It is added that it was provided to contribute. The scope of the present invention is not limited to the configurations and manufacturing methods explicitly described in the specification, and includes combinations of various aspects of the present invention disclosed in the present specification. Among the present inventions, the configuration for which a patent is sought is specified in the appended claims, but the present invention is disclosed in this specification even if the configuration is not specified in the claims. I would like to remind you that there is a possibility of claiming this configuration in the future.

DESCRIPTION OF SYMBOLS 1 Packaging machine 1 'Pillow packaging machine 2, 2' Packaging machine main body 3, 3 'Film supply apparatus 4 Product 5 Product conveyance supply apparatus 5' Product supply part 6 Upper film supply apparatus 7 Lower film supply apparatus 10 Upper film 10a Side edge 10b Connecting portion 10 'Wrapping film 11 Lower film 11a Side edge 11b Connecting portion 12 First upper original roll 12' First original roll 13 Second upper original roll 13 'Second original roll 16 First upper films 16a, 16a ′ Side edge 16 ′ First film 17 Second upper film 17 a, 17 a ′ Side edge 17 ′ Second film 20 First end bending roller (end bending means)
20 'fifth end bending roller (end bending means)
21 Second end bending roller (end bending means)
21 'sixth end bending roller (end bending means)
24 film joining sealing device 24 'film joining sealing device 25 side sealing device 32 first lower original fabric roll 33 second lower original fabric roll 36 first lower film 36a side edge 37 second lower film 37a side edge 40 third end Bending roller (end bending means)
41 Fourth end bending roller (end bending means)
44 Film sealing device 45 Side seal device 47 Side seal device 50 End seal device 50a Upper sealer portion 50b Lower sealer portion 65 Side seal device 75 Package 81 Center seal device 82 End seal device 85 Bending mechanism (end bending means)
86 Bending mechanism (end bending means)
87 Bag making machine

Claims (7)

Upper film supply means for supplying the upper film to the packaging machine body;
Lower film supply means for supplying the lower film to the packaging machine body;
Product supply means for supplying a product to the packaging machine body;
Means for conveying the supplied product in a state of being sandwiched from above and below by the upper film and the lower film, end sealing means for sealing and cutting in a direction crossing the conveying direction of the upper film and the lower film, The packaging machine body having an upper film and side seal means for sealing at least one side edge of the lower film;
The upper film supply means
Conveying means for respectively conveying the first upper film continuously fed out from the first upper original roll and the second upper film continuously drawn out from the second upper original roll,
End bending means for bending one side edge of the first upper film being conveyed and one side edge of the second upper film in order to oppose the sealant surface;
Heat-sealing the side edges bent by the end bending means, and a film joint sealing means for joining the first upper film and the second upper film to form the upper film;
The lower film supply means includes
Conveying means for respectively conveying the first lower film continuously drawn from the first lower original fabric roll and the second lower film continuously drawn from the second lower original fabric roll,
End bending means for bending one side edge of the first lower film being conveyed and one side edge of the second lower film so as to oppose the sealant surface;
The side edges bent by the end folding means are heat sealed, and the first lower film and the second lower film are joined together to form the lower film to form the lower film sealing means. A packaging machine characterized by that.   The portion where the side edge of the first upper film and the side edge of the second upper film are joined together, and the portion where the side edge of the first lower film and the side edge of the second lower film are joined up and down The packaging machine according to claim 1, wherein the packaging machines do not overlap in the direction. A packaging machine body, film supply means for supplying a packaging film to the packaging machine body, and product supply means for supplying a product to the packaging machine body,
The film supply means includes
Conveying means for conveying the first film continuously drawn from the first original roll and the second film drawn continuously from the second original roll, respectively.
End bending means for bending one side edge of the first film being conveyed and one side edge of the second film to face the sealant surface;
Heat sealing the side edges bent by the end bending means, and connecting the first film and the second film to form a wrapping film, and a film joint sealing means for forming the packaging film,
The packaging machine body includes a bag-making means for forming a continuously supplied packaging film into a cylindrical shape, a center seal device for sealing both side edges of the packaging film formed in the cylindrical shape, and a center seal thereof A packaging machine comprising: an end seal device that is disposed downstream of the device and seals and cuts in a width direction of the packaging film.   The portion where the side edge of the first film and the side edge of the second film are joined together and the center seal part sealed by the center seal device are prevented from overlapping in the vertical direction. 3. The packaging machine according to 3.   The end bending means is a roller for transferring each film, and when the film is transferred to the roller, the side edge of the film protrudes outward from the end of the roller. The packaging machine according to any one of claims 1 to 4.   The packaging device according to any one of claims 1 to 5, wherein the product is a core material constituting a vacuum heat insulating material.   The end seal device is a mobile seal device provided with a sealer in which a sealer sandwiching a film moves in a direction intersecting the transport direction of the film. The packaging device described.

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