JP5538598B1 - Method and apparatus for manufacturing synthetic resin gusset bag - Google Patents

Abstract

A method and apparatus for manufacturing a synthetic resin gusset bag capable of efficiently and accurately manufacturing a gusset bag.
A horizontal gusset forming material 3 is provided by a strip film made of synthetic resin. A horizontal gusset arrangement means 100 for arranging a horizontal gusset forming material 3 orthogonal between the longitudinal directions of the surface film 1 and the back film 2 is provided. A bottom forming means 200 is provided for arranging the belt-like bottom film 4 on the bottom. A joining means 300 for joining the horizontal gusset molding material 3 and the bottom film 4 to the front film 1 and the back film 2 is provided. The joining film 300 cuts the front film 1 and the back film 2 along the outline of the gusset bag 10. The horizontal gusset forming means 100 places the horizontal gusset forming material 3 on the back film 2 from above the back film 2. A step of temporarily fixing the horizontal gusset molding material 3 and the back film 2 is provided.
[Selection] Figure 1

Description

  The present invention relates to a method and apparatus for manufacturing a synthetic resin gusset bag capable of continuously forming a synthetic resin gusset bag with an automatic bag making machine.

  As a method and an apparatus for manufacturing a synthetic resin gusset bag, for example, techniques described in Patent Document 1 and Patent Document 2 have been proposed.

  In the manufacturing method described in Patent Document 1, the horizontal gusset forming material constituting the horizontal gusset portion is interposed between the front and rear films, and further, the separate bottom film constituting the bottom portion is arranged in the transport direction of the front and rear films. In contrast, it is a method of manufacturing a gusset bag by welding a film while being conveyed in parallel.

  On the other hand, the bag making machine for producing a gusset bag described in Patent Document 2 is an apparatus for producing a square bottom by folding a part of a belt-like film constituting a body part into two folds and guiding it to the bottom part. is there.

Japanese Patent No. 4436521 Japanese Patent No. 3655627

  Each of such conventional gusset bag manufacturing methods and apparatuses is provided with a substantially cylindrical horizontal gusset forming material that forms the horizontal gusset portion of the gusset bag, and the horizontal gusset forming material is formed of two upper and lower belt-like film. In the meantime, means for conveying from the lateral direction so as to be orthogonal to the longitudinal direction has been adopted.

  However, if the horizontal gusset molding material is transported from the lateral direction with respect to the strip film, the movement direction of the strip film interferes with the transport direction of the lateral gusset molding material. There was a risk that the position would be out of order. Therefore, in order to transport the horizontal gusset molding material to an accurate position by the conventional method of manufacturing a gusset bag, it is necessary to slow down the transport speed of the belt-shaped film so as not to interfere with the transport of the horizontal gusset molding material. However, there is a disadvantage that the entire manufacturing process is delayed.

  Moreover, in the conventional method and apparatus for manufacturing a gusset bag, an extremely wide space is required only by moving the belt-like film. However, in order to transport the horizontal gusset molding material from the lateral direction of the belt-like film, a wider space is required. There was also a need to secure.

  Accordingly, the present invention was created to solve the above-described problems, and is made of a synthetic resin that can shorten the manufacturing time of the gusset bag and streamline the installation space, and can efficiently and accurately manufacture the gusset bag. It aims at providing the manufacturing method and manufacturing apparatus of a gusset bag.

In order to achieve the above-mentioned object, the first means in the present invention is to use a lateral gusset molding material 3 in which a strip film made of synthetic resin is folded into a flat tube shape to form the lateral gusset portion 13 of the gusset bag 10. The horizontal gusset molding material 3 is arranged so as to be orthogonal between the longitudinal direction of the belt-like surface film 1 that forms the front body portion 11 of the gusset bag 10 and the belt-like back surface film 2 that forms the back body portion 12. Horizontal gusset disposing means 100, bottom forming means 200 for arranging the strip-shaped bottom film 4 forming the square bottom 14 of the gusset bag 10 at the bottom, the horizontal gusset forming material 3 and the bottom film 4 as the surface film 1 and the back film 2 In the manufacturing method of the synthetic resin gusset bag, the horizontal gusset arrangement means 100, the bonding means 300 for cutting the surface film 1 and the back film 2 along the outline of the gusset bag 10 , Above the backside film 2 comprises a cutter 31 for cutting the lateral gusset forming member 3 of the length of the lateral gusset portion 13, folded into a substantially tubular shape at the mobile device 32 for conveying the film material for the lateral gusset 13 Later, it is cut by the cutter 31, the cut horizontal gusset molding material 3 is held by the gripping tool 33, and the horizontal gusset molding material 3 is moved along the transport rail 35 together with the gripping tool 33 by the movement of the driving belt 34. The horizontal gusset molding material 3 is placed on the back film 2 from above the back film 2 by the horizontal gusset molding material arrangement mechanism 30 configured as above, and the horizontal gusset molding material 3 and the back film 2 are temporarily fixed. It is a manufacturing method provided with.

  The bottom forming means 200 of the second means opens the cutting port 3A of the horizontal gusset molding material 3 located at the bottom of the gusset bag 10 and folds the bottom surface portion 3B of the horizontal gusset molding material 3 to the bottom surface portion 3B. After the film 4 is bonded, the manufacturing method includes a step of closing the folded bottom surface portion 3B.

  The third means is a step of forming the header 16 and the flap 17 by folding back the extension member 2A extended from the end of the back film 2 located at the opening 15 of the gusset bag 10 in the joining means 300. And having a header 16 and a flap 17 in the opening of the gusset bag 10.

  The fourth means is a step of joining the chuck strip 8 disposed between the front film 1 and the back film 2 to the position of the opening 15 of the pair of gusset bags 10 by the joining means 300. And a sealing chuck 18 is provided in the opening 15 of the gusset bag 10.

A fifth means is to provide a horizontal gusset forming material 3 in which a strip-like film made of a synthetic resin is folded into a flat tube shape to form a horizontal gusset portion 13, and a strip-shaped surface film 1 that forms a front barrel portion 11. The horizontal gusset forming material 3 is arranged so as to be orthogonal to the longitudinal direction between the belt-shaped back film 2 forming the back body portion 12 and the bottom film 4 forming the square bottom portion 14 is arranged at the bottom portion. A synthetic resin gusset bag manufacturing apparatus configured to join the molding material 3 and the bottom film 4 to the front film 1 and the back film 2 and to cut the front film 1 and the back film 2 along the outline of the gusset bag 10. A feed mechanism 20 for moving the front film 1 and the back film 2 along the longitudinal direction, and a cutter 31 for cutting the horizontal gusset forming material 3 having the length of the horizontal gusset portion 13 above the back film 2, Horizontal gusset 1 After being folded into a substantially cylindrical shape by a moving device 32 that conveys the film material for cutting, the cutter 31 cuts the cut horizontal gusset molding material 3 with a gripping tool 33 and grips it by moving the driving belt 34. The horizontal gusset forming material 3 moves along the conveying rail 35 together with the tool 33, and the horizontal gusset forming material arrangement mechanism 30 for placing the horizontal gusset forming material 3 on the back film 2 and the horizontal gusset on the back film 2. A back surface heating seal mechanism 40 for temporarily bonding the molding material 3, and a bottom portion expression mechanism 50 for opening the cut opening 3 </ b> A of the horizontal gusset molding material 3 located at the bottom of the gusset bag 10 and folding back the bottom surface portion 3 </ b> B of the horizontal gusset molding material 3. A bottom seal mechanism 60 having a closure 61 configured to adhere the bottom film 4 to the bottom surface portion 3B of the horizontal gusset molding material 3 and to close the bottom surface portion 3B folded together with the adhered bottom film 4; Gusset molding 3 and The film 4 is bonded to the surface film 1 and the back film 2, the surface film 1 and the back surface film 2, a manufacturing apparatus and a bonding mechanism 70 is cut along the contour of the gusset bag 10.

  A sixth means includes a cutter 31 for cutting the horizontal gusset molding material 3 above the back film 2 and the horizontal gusset molding material 3 from above the back film 2 in the horizontal gusset molding material arrangement mechanism 30. The manufacturing apparatus includes a moving device 32 installed on the back film 2.

In the seventh means, the bottom expression mechanism 50 includes a slide rod 52 that opens the cutting port 3A of the horizontal gusset molding material 3, and a side surface of the cutting port 3A that is folded back on the horizontal gusset molding material 3. It is set as the manufacturing apparatus provided with the board 54 for folding | turning which forms the bottom face part 3B located in the bottom part of the gusset bag 10 against it.

  The horizontal gusset forming material 3 is formed by folding a belt-shaped horizontal gusset film as in the horizontal gusset arrangement means 100 according to claim 1, and the horizontal gusset molding material 3 is placed on the back film 2 from above the back film 2. The horizontal gusset at the time of conveyance like the conventional manufacturing method which conveys a horizontal gusset molding material from the horizontal direction by having mounted and mounting the said horizontal gusset molding material 3 and the said back surface film 2 temporarily. It is possible to prevent positional deviation such as tilting of the molding material. As a result, it has become possible to reduce the manufacturing time of the gusset bag and to manufacture it efficiently and accurately.

  As in the bottom forming means 200 according to claim 2, the cut portion 3 </ b> A of the horizontal gusset molding material 3 located at the bottom of the gusset bag 10 is opened to fold back the bottom surface portion 3 </ b> B of the horizontal gusset molding material 3. After the bottom film 4 is adhered to the substrate, the step of closing the folded bottom surface portion 3B is provided, so that the bonding work between the horizontal gusset molding material 3 and the bottom film 4 can be performed very accurately.

  According to the joining means 300 of the third aspect, the gusset bag 10 including the header 16 and the flap 17 can be reasonably manufactured.

  According to the joining means 300 of the fourth aspect, the gusset bag 10 provided with the sealing chuck 18 can be reasonably manufactured.

According to the manufacturing apparatus of claim 5, the horizontal gusset molding material placement mechanism 30 can place the horizontal gusset molding material 3 on the top surface from the upper side of the back film 2, and the back surface heating seal mechanism 40 places the back gusset molding material 3 on the back film 2. The horizontal gusset molding material 3 can be temporarily bonded. Furthermore, the bottom portion 3B of the horizontal gusset molding material 3 located at the bottom of the gusset bag 10 can be folded back by the bottom portion display mechanism 50, and the bottom film 4 is applied to the bottom portion 3B of the horizontal gusset molding material 3 by the bottom seal mechanism 60. It was possible to close the bottom surface portion 3B which was folded together with the bonded bottom film 4 while being bonded.

  According to the horizontal gusset forming material arrangement mechanism 30 of claim 6, the horizontal gusset molding material 3 having a predetermined length is cut above the back film 2, and the horizontal gusset molding material 3 is formed on the back film 2 from above the back film 2. Can be installed on top. As in the case where the horizontal gusset forming material is conveyed from the lateral direction with respect to the belt film conveying direction as in the prior art, the positional deviation such as the inclination of the horizontal gusset forming material is eliminated, and the horizontal gusset forming material 3 is made extremely accurate. Can be installed in position. As a result, it is possible to install the horizontal gusset molding material 3 without slowing down the conveying speed of the back film 2 as in the prior art, thereby shortening the production time of the gusset bag and improving the production efficiency of the gusset bag. Is. Moreover, since the horizontal gusset molding material 3 is cut above the back film 2 and the horizontal gusset molding material 3 is installed on the back film 2, the installation space can be rationalized.

  By opening the cut end portion 1A of the surface film 1 and opening the cut opening 3A of the horizontal gusset molding material 3 temporarily fixed to the surface film 1 by the bottom expression mechanism 50 according to claim 7, the bottom portion of the gusset bag 10 is opened. It is possible to accurately form the bottom surface portion 3B located at the position.

It is the schematic which shows one Example of this invention manufacturing method. It is a schematic plan view which shows the horizontal gusset molding material arrangement | positioning mechanism of this invention manufacturing apparatus. It is a schematic plan view which shows the bottom part presentation mechanism of this invention manufacturing apparatus. It is a schematic plan view which shows the bottom part sealing mechanism of this invention manufacturing apparatus. It is the schematic which shows one Example of the bottom part sealing mechanism of this invention manufacturing apparatus. It is a front view which shows one Example of the gusset bag shape | molded with this invention manufacturing apparatus. It is a perspective view which shows one Example of the gusset bag shape | molded with this invention manufacturing apparatus. It is the schematic which shows the other Example of the bottom part sealing mechanism of this invention manufacturing apparatus. It is a front view which shows one Example of the gusset bag shape | molded with this invention manufacturing apparatus. It is a perspective view which shows the other Example of the gusset bag shape | molded with this invention manufacturing apparatus.

  According to the present invention, the initial purpose of shortening the manufacturing time of the gusset bag, rationalizing the installation space, and making it possible to manufacture the gusset bag efficiently and accurately has been achieved.

  As the material of the synthetic resin gusset bag of the present invention, for example, any synthetic resin material such as a film material obtained by laminating a nylon film on a polypropylene film, an LDPE film, an HDPE film, a PET film, or an aluminum vapor deposition film can be used. It is.

  The gusset bag 10 of the present invention is formed of a synthetic resin material, and includes a front barrel portion 11, a back barrel portion 12, a lateral gusset portion 13, and a square bottom portion 14 (see FIGS. 7 and 10).

  The production method of the present invention particularly has the following three means. That is, the horizontal gusset arranging means 100, the bottom portion forming means 200, and the joining means 300 (see FIG. 1).

  The lateral gusset arranging means 100 is a means from the lateral gusset molding material 3 placed on the back film 2 until the lateral gusset molding material 3 is temporarily bonded. That is, the belt-like back film 2 that forms the back body portion 12 of the gusset bag 10 is installed in advance (see FIG. 1). On the other hand, the horizontal gusset molding material 3 is a film member in which a strip-like film made of a synthetic resin is folded into a flat tube shape and forms the horizontal gusset portion 13 of the gusset bag 10.

  In this invention, the horizontal gusset molding material 3 is formed above the back film 2, and the formed horizontal gusset molding material 3 is arrange | positioned sideways on the upper surface of the back film 2 (refer FIG. 2).

  In this horizontal gusset arrangement means 100, the horizontal gusset molding material arrangement mechanism 30 first places the horizontal gusset molding material 3 on the back film 2 from above the back film 2 (see FIG. 1). Next, the horizontal gusset molding material 3 and the back film 2 are temporarily fixed by the back surface heat sealing mechanism 40.

  The bottom portion forming means 200 is a means for arranging the belt-like bottom film 4 forming the square bottom portion 14 of the gusset bag 10 at the bottom position (see FIG. 1). First, the bottom portion 3B of the lateral gusset molding material 3 located at the bottom of the gusset bag 10 is folded back by opening the cutting port 3A of the lateral gusset molding material 3 by the bottom part expression mechanism 50 (see FIG. 3). At this time, the upper side of the overlapped cutting opening 3A of the horizontal gusset molding material 3 is opened, and the bottom surface portion 3B of the horizontal gusset molding material 3 located at the bottom of the gusset bag 10 is exposed. Next, the bottom film 4 is bonded to the bottom surface portion 3B exposed by the bottom seal mechanism 60 (see FIG. 4). Then, it becomes the process of closing the folded back bottom surface part 3B together with the bottom film 4.

  The joining means 300 is means for cutting along the contour of the gusset bag 10 after joining the front film 1 and the back film 2. In this means, first, the horizontal gusset molding material 3 and the bottom film 4 are joined to the front film 1 and the back film 2 (see FIG. 1). And if the surface film 1 and the back surface film 2 are cut | disconnected along the outline of the gusset bag 10 with the joining mechanism 70, the gusset bag 10 will be formed (refer FIG. 6, FIG. 9).

  5 to 7 show a process of forming the header 16 and the flap 17 at the position of the opening 15 of the gusset bag 10 in the joining means 300. That is, it is a step of forming the header 16 and the flap 17 at the position of the opening 15 by folding back the extending member 2A extended from both width ends of the back film 2 (see FIG. 5). A header 16 and a flap 17 are formed on the gusset bag 10 formed by such a process (see FIG. 6). In the illustrated example, when the flap 17 is folded, a long adhesive tape 17 </ b> A is disposed inside the flap 17. And the gusset bag 10 with the flap 17 is formed (refer FIG. 7).

  8 to 10 show a process of forming the sealing chuck 18 at the position of the opening 15 of the gusset bag 10 in the joining means 300. In the example of illustration, first, the opening side edge part of the horizontal gusset molding material 3 is adhere | attached on the back surface film 2 with the adhesive tape 9 (refer FIG. 8). Next, the chuck strip 8 is disposed on the back film 2, and the chuck strip 8 is joined to the position of the opening 15 of the gusset bag 10. As a result, the sealing chuck 18 is provided in the opening 15 of each gusset bag 10 (see FIGS. 9 and 10).

  Next, the manufacturing apparatus of the present invention will be described. The manufacturing apparatus of the present invention is an apparatus for performing the manufacturing method. That is, the basic configuration of the apparatus of the present invention for manufacturing the synthetic resin gusset bag 10 includes a feed mechanism 20, a horizontal gusset molding material arrangement mechanism 30, a back surface heating seal mechanism 40, a surface heating seal mechanism 50, a bottom portion expression mechanism 50, A bottom seal mechanism 60 and a joining mechanism 70 are provided (see FIG. 1).

  The feed mechanism 20 is a mechanism that moves the front film 1 and the back film 2 along the longitudinal direction (see FIG. 1). In the illustrated example, a feeding mechanism 20 using a plurality of rollers 21 is shown. In this feed mechanism 20, the front film 1 and the back film 2 are horizontally moved along the longitudinal direction.

  The horizontal gusset molding material arrangement mechanism 30 is a mechanism for installing the horizontal gusset molding material 3 on the back film 2 (see FIG. 2). The illustrated horizontal gusset forming material arrangement mechanism 30 includes a cutter 31 for cutting the horizontal gusset forming material 3 having the length of the horizontal gusset portion 13 above the back film 2. This cutter 31 is cut into a predetermined length after being folded into a substantially cylindrical shape by a moving device 32 that conveys the film material for the horizontal gusset portion 13. Further, when the driving belt 34 moves while the cut horizontal gusset molding material 3 is held by the gripping tool 33, the horizontal gusset molding material 3 moves along the transport rail 35 together with the gripping tool 33, and The horizontal gusset molding material 3 is placed on the back film 2 from above. The gripping tool 33 in the illustrated example shows a configuration in which the horizontal gusset molding material 3 is sucked by suction air, but the configuration of the gripping tool 33 can be arbitrarily changed, such as another cam system.

  The back surface heat sealing mechanism 40 is a mechanism for temporarily adhering the horizontal gusset molding material 3 onto the back surface film 2 (see FIG. 1). In the illustrated example, the back film 2 and the horizontal gusset molding material 3 are temporarily bonded by applying a sealing hot plate 41 from the lower surface side of the back film 2.

  The bottom part expression mechanism 50 is a mechanism that turns back the bottom surface part 3B of the horizontal gusset molding material 3 (see FIG. 3). That is, the cutting opening 3A of the horizontal gusset molding 3 located at the bottom of the gusset bag 10 is opened, and the bottom surface 3B is folded back. The illustrated bottom part expression mechanism 50 includes a pressing plate 51, a slide rod 52, a position fixing plate 53, and a folding plate 54.

  The pressing plate 51 is a member that presses and fixes the horizontal gusset molding material 3 at a position where the bottom surface portion 3B of the horizontal gusset molding material 3 is folded back. Then, with the horizontal gusset molding material 3 being pressed and fixed, the slide rod 52 is locked to the upper edge of the cutting opening 3A of the horizontal gusset molding material 3 (see FIG. 3). The slide rod 52 slides along the longitudinal direction of the horizontal gusset molding material 3 and is attached to the position fixing plate 53. Then, the slide gusset 52 folds back the cutting opening 3 </ b> A of the horizontal gusset forming material 3 to form a bottom surface portion 3 </ b> B located at the bottom of the gusset bag 10. Furthermore, the shape of the bottom surface portion 3B is adjusted by applying a folding plate 54 to the bottom surface portion 3B. The illustrated folding plate 54 is swingably formed by a hinge.

  The bottom seal mechanism 60 is a mechanism for temporarily bonding the bottom film 4 to the bottom surface portion 3B of the expanded horizontal gusset molding material 3 (see FIG. 1). The illustrated bottom seal mechanism 60 includes a feed roller 61, a temporary fixing hot plate 62, a closing tool 63, and a folding plate 64 (see FIG. 4).

  The bottom film 4 is installed at the position of the bottom surface portion 3B of the expanded horizontal gusset molding material 3 by the feed roller 61 (see FIG. 4). And the bottom film 4 installed on the bottom face part 3B is temporarily bonded by the hot plate 62 for temporary fixing. Further, the folded bottom plate 3B of the horizontal gusset molding 3 is returned to the original state by the closing tool 63 and the folding plate 64. The illustrated closing tool 63 is composed of a plurality of rollers. In the drawing, the closing tool 63A is applied to the center of the bottom surface portion 3B, and serves as a trigger for folding. Next, a plurality of closing tools 63B, 63C, 63D, and 63E having different diameters are arranged, and the bottom film 4 together with the bottom film 4 is closed by sequentially contacting the side edges of the bottom film 4 with each other. Is. At this time, the folding position of the bottom surface portion 3B is made accurate by interposing the folding plate 64 between the bottom surface portions 3B of the horizontal gusset molding material 3.

  The joining mechanism 70 is a mechanism for forming the gusset bag 10 by joining the front film 1 and the back film 2 and then cutting them (see FIGS. 1, 5, and 8). The joining mechanism 70 includes a vertical sealing hot plate 71 and a horizontal sealing hot plate 72. Then, the horizontal gusset molding material 3 and the bottom film 4 are joined to the front film 1 and the back film 2 by the hot plate 71 for vertical sealing and the hot plate 72 for horizontal sealing. Further, simultaneously with or after the joining, the front film 1 and the back film 2 are cut along the outline of the gusset bag 10 (not shown).

  The joining mechanism 70 shown in FIG. 5 is a mechanism that forms the header 16 and the flap 17 at the position of the opening 15 of the gusset bag 10. That is, in order to fold the extending member 2A extended from the end of the back film 2 to form the header 16 and the flap 17 at the position of the opening 15, a reinforcing hot plate 73 for welding the folded portion of the header 16 is disposed. ing. Further, the welded header 16 is provided with a heating pin 74 that opens the locking hole 16A.

  A joining mechanism 70 shown in FIG. 8 is a mechanism for forming the sealing chuck 18 on the gusset bag 10 by the chuck strip 8. First, the adhesive tape 9 is disposed on the opening side end of the horizontal gusset molding material 3 and bonded to the back film 2 with the reinforcing hot plate 73. Next, the chuck strip 8 is disposed on the back film 2 and is welded by the chuck hot plate 75. Then, after the surface film 1 is overlaid on the back film 2, the gusset bag 10 with the sealing chuck 18 is obtained by cutting along the shape of the gusset bag 10 with the hot plate 71 for vertical sealing and the hot plate 72 for horizontal sealing. It is formed (see FIGS. 9 and 10).

  The configuration of the device of the present invention is not limited to the illustration. Furthermore, the design can be freely changed without changing the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Surface film 1A Cutting edge part 2 Back surface film 2A Extension member 3 Horizontal gusset molding material 3A Cutting port 3B Bottom part 4 Bottom film 5 Handpiece piece 6 Bonding film 7 Reinforcement film 8 Zipper strip 9 Adhesive tape 10 Gazette bag 11 Front cylinder Part 12 Back surface part 13 Horizontal gusset part 14 Square bottom part 15 Opening part 16 Header 17 Flap 18 Sealing chuck 20 Feed mechanism 21 Roller 30 Horizontal gusset forming material arrangement mechanism 31 Feed roller 32 Cutter 33 Gripping tool 34 Drive belt 35 Moving rail 40 Back surface heating Sealing mechanism 41 Heating plate for sealing 50 Bottom exposing mechanism 51 Press plate 52 Slide rod 53 Position fixing plate 54 Folding plate 60 Bottom sealing mechanism 61 Feed roller 62 Temporary fixing hot plate 63 Closure 64 Folding plate 70 Joining Mechanism 71 Hot plate for vertical seal 72 Horizontal sea Use hot plate 73 reinforcing the hot plate 74 heated pins 75 chuck hot plate 76 opening the hot plate of 100 horizontal gusset arrangement means 200 bottom forming means 300 joining means

Claims (7)

A belt-shaped surface film and a back body part that form a front body part of a gusset bag by providing a lateral gusset molding material that forms a lateral gusset part of a gusset bag by folding a strip film made of synthetic resin into a flat tube shape Horizontal gusset arrangement means for arranging the horizontal gusset molding material so as to be orthogonal to the longitudinal direction of the belt-shaped back film forming the bottom, and forming the bottom portion for arranging the strip-shaped bottom film forming the corner bottom of the gusset bag at the bottom A synthetic resin gusset bag comprising: means, and a joining means for joining the lateral gusset molding material and the bottom film to the surface film and the back film, and cutting the surface film and the back film along the outline of the gusset bag. In
The horizontal gusset arranging means is provided with a cutter for cutting a horizontal gusset forming material having a length of the horizontal gusset portion above the back film, and is folded into a substantially cylindrical shape by a moving device that conveys the film material for the horizontal gusset portion. Lateral gusset forming material configured such that the horizontal gusset forming material is cut by the cutter, the cut horizontal gusset molding material is held by a gripping tool, and the horizontal gusset molding material is moved along the conveying rail together with the gripping tool by movement of the driving belt. A synthetic resin gusset bag comprising a step of placing a horizontal gusset molding material on the back film from above the back film by an arrangement mechanism, and temporarily fixing the horizontal gusset molding material and the back film. Manufacturing method.   The bottom forming means opens the cutting edge of the horizontal gusset molding material located at the bottom of the gusset bag, folds the bottom surface portion of the horizontal gusset molding material, adheres the bottom film to the bottom surface portion, and then closes the folded bottom surface portion. The manufacturing method of the synthetic resin gusset bag of Claim 1 provided with the process.   The joining means includes a step of forming a header and a flap by folding an extension member extended from an end of the back film located at the opening of the gusset bag, and the header and the flap at the opening of the gusset bag. A method for producing a synthetic resin gusseted bag according to claim 1.   The joining means includes a step of joining a chuck strip disposed between the front film and the back film to the position of the opening of the pair of gusset bags, and sealing the chuck to the opening of the gusset bag A method for producing a synthetic resin gusseted bag according to claim 1. A strip-shaped film made of synthetic resin is folded into a flat tube shape to provide a horizontal gusset molding material that forms a horizontal gusset, and a strip-shaped surface film that forms the front barrel portion and a strip-shaped back surface that forms the back barrel portion A horizontal gusset molding material is arranged between the film and the longitudinal direction so as to be orthogonal to each other. In the apparatus for manufacturing a synthetic resin gusset bag configured to cut the front film and the back film along the outline of the gusset bag,
A feed mechanism for moving the front film and the back film along the longitudinal direction;
It is equipped with a cutter that cuts the horizontal gusset-shaped material of the length of the horizontal gusset above the back film, folded in a substantially cylindrical shape with a moving device that transports the film material for the horizontal gusset, and then cut with this cutter Then, the cut horizontal gusset molding material is gripped by the gripping tool, and the horizontal gusset molding material moves along the transport rail together with the gripping tool by the movement of the driving belt, and the horizontal gusset molding material is placed on the back film. Horizontal gusset molding material placement mechanism to
A backside heating seal mechanism for temporarily adhering a horizontal gusset molding material on the backside film;
A bottom expression mechanism that opens the cutting edge of the horizontal gusset molding material located at the bottom of the gusset bag and folds the bottom portion of the horizontal gusset molding material;
A bottom seal mechanism provided with a closing tool configured to close the bottom surface portion folded together with the bonded bottom film while bonding the bottom film to each bottom surface portion of the horizontal gusset molding material;
A synthetic resin gusset bag comprising: a horizontal gusset molding material and a bottom film bonded to a surface film and a back film; and a bonding mechanism that cuts the surface film and the back film along the outline of the gusset bag. manufacturing device.   In the horizontal gusset molding material arrangement mechanism, a cutter for cutting the horizontal gusset molding material above the back film, and a moving device for installing the horizontal gusset molding material on the back film from above the back film. The manufacturing apparatus of the synthetic resin gusset bag of Claim 5 provided.   The bottom expression mechanism includes a slide ridge that opens the cutting edge of the horizontal gusset molding material, and a bottom surface portion that is located at the bottom of the gusset bag against the side surface of the gusset molding material that is folded over the horizontal gusset molding material. The synthetic resin gusset bag manufacturing apparatus according to claim 5, further comprising a folded plate body to be formed.

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