JP5584815B1 - 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 removing two gusset bags.
A horizontal gusset forming material arrangement mechanism (30) for installing a horizontal gusset forming material (3) twice as long as a horizontal gusset (13) on a back film (2) is provided. A back surface heating seal mechanism 40 for temporarily bonding the horizontal gusset molding material 3 on the back film 2 is provided. A surface heating seal mechanism 50 for temporarily bonding the surface film 1 on the horizontal gusset molding material 3 is provided. A bottom part expression mechanism 60 that folds the bottom surface part 3B of the horizontal gusset molding material 3 is provided. A bottom seal mechanism 70 having a closing tool 71 for closing the bottom surface portion 3B is provided. A joining mechanism 80 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.
[Selection] Figure 1

Description

  The present invention relates to a manufacturing method and a manufacturing apparatus for a gusset bag formed of a synthetic resin material, and relates to a manufacturing method and a manufacturing apparatus for a synthetic resin gusset bag capable of taking two gusset bags 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 back films, and a separate bottom film constituting the bottom portion is further provided with respect to the transport direction of the front and back films. The film is welded while being conveyed in parallel to produce a gusset bag.

  On the other hand, a 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. .

Japanese Patent No. 4436521 Japanese Patent No. 3655627

  Such conventional methods and apparatuses for producing gusset bags are suitable for a so-called two-piece production method in which two gusset bags are produced at the same time, even though it is possible to produce gusset bags one by one. It was not.

  That is, in the conventional manufacturing method of taking two synthetic resin bags, in order to manufacture two synthetic resin bags at the same time with one manufacturing apparatus, it is normally manufactured with the opening portions of the bags facing each other. doing. Therefore, when the gusset bag 10 is manufactured by a conventional two-piece manufacturing method, the corner bottom portions 14 are located at both ends of the width of the belt-like film (see FIG. 18). Therefore, in order to take two gusset bags 10, it is necessary to install two apparatuses for disposing the bottom films at both ends of the width of the belt-like film. The rationalization by taking was difficult.

  On the other hand, in the manufacturing method of the gusset bag described in Patent Document 1 and Patent Document 2, a substantially cylindrical lateral gusset forming material that forms the lateral gusset portion of the gusset bag is provided, and the lateral gusset forming material is formed into two upper and lower strips. A means for arranging the films so as to be orthogonal to the longitudinal direction has been adopted. However, when the horizontal gusset molding material is transported from the lateral direction with respect to the transport direction of the belt-like film, positional deviation such as tilting of the horizontal gusset molding material during transportation is likely to occur. Therefore, in order to transport the horizontal gusset molding material to an accurate position by the conventional method for producing a gusset bag, it is necessary to slow the transport speed of the belt-like film.

  Therefore, in order to take two gusset bags, when a horizontal gusset forming material having a length twice the normal length is transported from the lateral direction, it is necessary to further reduce the belt film transport speed. In addition, since the position to be conveyed from the side is always constant, after the horizontal gusset molding material is conveyed, the next horizontal gusset molding material cannot be conveyed unless the belt-like film moves to the next conveyance position. As a result, the manufacturing time has become extremely slow, and rationalization by taking two gusset bags has become more difficult.

  Furthermore, various types of gusset bags having flaps, grips, or chucks at the openings are provided. However, in the conventional two-piece manufacturing method, since the bag is manufactured with the opening portions facing each other, it is extremely difficult to form these flaps, handles, etc. into the facing opening portions as necessary. It was.

  Thus, in order to take two gusset bags by the conventional two-piece manufacturing method or the conventional gusset bag manufacturing method, there are extremely many problems to be solved. Therefore, the present invention has been created to solve the above-described problems, and can efficiently take two gusset bags, and can simultaneously mold a flap, a handle, and the like as necessary. It aims at providing the manufacturing method and manufacturing apparatus of a synthetic resin 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. The lateral gusset forming means 100, the 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 lateral 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 having the bonding means 300 for cutting the front film 1 and the back film 2 along the outline of the gusset bag 10, A horizontal gusset molding material 3 having a length twice that of the horizontal gusset portion 13 is placed on the back film 2 having a width that is twice the height of the gusset bag 10 to be manufactured, and temporarily fixed. A step of cutting the horizontal gusset molding material 3 at a position where the length of the molding material 3 bisects, and a step of polymerizing the surface film 1 on the back film 2 through the cut horizontal gusset molding material 3, The bottom forming means 200 opens the respective cut openings 3A of the horizontal gusset molding material 3 and folds back the bottom surface portions 3B of the horizontal gusset molding material 3 located at the bottom of the gusset bag 10 so that one bottom is formed on the two bottom surface portions 3B. After the film 4 is bonded, the joining means 300 includes a step of closing the folded bottom surface portion 3B, and the joining means 300 cuts the front film 1 and the back film 2 along the contours of the two gusset bags 10 with the square bottom portions 14 facing each other. The manufacturing method includes the step of:

  The second means is a step of temporarily fixing the surface film 1 on the horizontal gusset molding material 3 in the bottom forming means 200, and cutting the surface film 1 along the cutting position of the horizontal gusset molding material 3. Opening the cut end 3 </ b> A of the horizontal gusset molding material 3 by opening the cut end 1 </ b> A of the cut surface film 1 toward the width end of the surface film 1, and positioning the bottom end of the gusset bag 10. And a step of exposing the bottom surface portion 3B of the horizontal gusset molding material 3 to be manufactured.

  The third means is that in the joining means 300, the extension member 2A extended from both width ends of the back film 2 is folded back to form the header 16 and the flap 17 at the position of the opening 15 of the pair of gusset bags 10. The manufacturing method includes a process, and the header 16 and the flap 17 are provided in the opening of each gusset bag 10.

  A fourth means is that, in the joining means 300, a pair of joining films 6 and a pair of handbags 18 arranged between the front film 1 and the back film 2 are provided for each opening of the pair of gusset bags 10. It is a manufacturing method which has the process joined to a position and provides handbag 18 in the opening of each gusset bag 10.

  A fifth means joins a pair of reinforcing films 7 arranged between the front film 1 and the back film 2 at the positions of the openings of the pair of gusset bags 10 in the joining means 300, The manufacturing method includes a step of opening a hand hole 18 </ b> A that penetrates the reinforcing film 7, and the hand 18 is provided in the opening of each gusset bag 10.

  A sixth 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 each opening of the pair of gusset bags 10 by the joining means 300. And a sealing chuck 19 is provided at the opening of each gusset bag 10.

A seventh means is to provide a horizontal gusset molding material 3 in which a strip 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. In this embodiment, the feed mechanism 20 for moving the front film 1 and the back film 2 along the longitudinal direction and the horizontal gusset forming material 3 having a length twice that of the horizontal gusset portion 13 of the gusset bag 10 to be manufactured are cut into the horizontal gusset. Forming material 3 A horizontal gusset forming material arrangement mechanism 30 that bisects the horizontal gusset molding material 3 installed on the film 2, a back surface heating sealing mechanism 40 that temporarily bonds the horizontal gusset molding material 3 onto the back film 2, and a horizontal gusset molding material. The surface heating sealing mechanism 50 that temporarily bonds the surface film 1 onto the surface 3 and the cut end portion of the surface film 1 that is divided from the longitudinal central portion of the lateral gusset molding material 3 are opened in the width direction. The bottom opening mechanism 60 that opens the cutting opening 3A and folds the bottom surface portion 3B of the lateral gusset molding material 3 located at the bottom of the gusset bag 10 and the bottom film 4 on the two bottom surface portions 3B of the lateral gusset molding material 3 are provided. , And a bottom seal mechanism 70 provided with a closing tool 71 configured to close the bottom surface portion 3B folded together with the bonded bottom film 4, and the side gusset molding material 3 and the bottom film 4 to the surface film 1 and the back surface. Contact film 2 And, the surface film 1 and the back surface film 2 Sumisoko unit 14 is a manufacturing apparatus and a bonding mechanism 80 is cut along the contour of the two gusset bag 10 which faces.

  The eighth means includes a cutter 31 for cutting a predetermined length of the horizontal gusset molding material 3 above the back film 2 and a predetermined length of the horizontal gusset molding material 3 on the back surface in the horizontal gusset molding material arrangement mechanism 30. The manufacturing apparatus includes a moving device 32 installed on the back film 2 from above the film 2 and a cutter 36 that bisects the horizontal gusset molding material 3 placed on the back film 2.

  9th means WHEREIN: The said bottom part exposure mechanism 60 is the horizontal gusset which temporarily cut | fastened to the surface film 1 while opening the cutter 61 which bisects the surface film 1, and the cutting | disconnection edge part 1A of the bisected surface film 1 An expansion roller 62 that opens the cutting port 3A of the molding material 3 and a bottom surface portion 3B that is positioned on the bottom of the gusset bag 10 are formed against the side surface of the cutting port 3A of the gusset molding material 3 that is folded back onto the horizontal gusset molding material 3. The manufacturing apparatus includes a folding plate 63 to be turned on.

  In the tenth means, the feeding mechanism 20 includes a sloped portion 90 that lifts diagonally upward and returns to the horizontal again while the front film 1 and the back film 2 are horizontally moved along the longitudinal direction. A part of the ejection mechanism 60 and the bottom seal mechanism 70 is a manufacturing apparatus disposed in the gradient portion 90.

  As in the manufacturing method according to the first aspect, by providing the horizontal gusset forming means 100, the bottom portion forming means 200, and the joining means 300, it was possible to realize two gusset bags 10.

  By providing the bottom forming means 200 of claim 2, the two bottom portions of the gusset bag 10 formed of the horizontal gusset molding material 3 were successfully molded simultaneously. As a result, two gusset bags 10 can be rationally taken.

  According to the joining means 300 of the third aspect, two gusset bags 10 including the header 16 and the flap 17 can be taken.

  According to the joining means 300 of the fourth aspect, two gusset bags 10 with the handbag 18 can be taken.

  According to the joining means 300 of the fifth aspect, it is possible to take two gusset bags 10 each having the hand hole 18A.

  According to the joining means 300 of the sixth aspect, two gusset bags 10 having the sealing chuck 19 can be taken.

  As in the manufacturing apparatus according to claim 7, the bottom part 3 </ b> B of the lateral gusset forming material 3 positioned at the bottom of the gusset bag 10 can be folded back by the bottom expression mechanism 60, and the bottom seal mechanism 70 can While attaching the bottom film 4 to the bottom face part 3B of the gusset molding material 3, it became possible to close the bottom face part 3B turned back together with the adhered bottom film 4. And the two gusset bags 10 can be manufactured simultaneously by the joining mechanism 80.

  According to the horizontal gusset forming material arrangement mechanism 30 of claim 8, the horizontal gusset forming material 3 having a predetermined length is cut above the back film 2, and the horizontal gusset forming material 3 is formed on the back film 2 from above the back film 2. Can be installed on top. Twice that the misalignment such as the tilting of the horizontal gusset material is eliminated and the double gusset is formed to take two pieces, as in the case where the horizontal gusset molding material is transported from the lateral direction with respect to the transport direction of the belt-shaped film as in the past. Even the horizontal gusset forming material 3 having the length can be installed at a very accurate position. Moreover, since the horizontal gusset molding material 3 cut to a predetermined length above the back film 2 is in a standby state, the horizontal gusset molding material can be used without slowing down the conveying speed of the back film 2 as in the prior art. 3 can be installed continuously. As a result, the production efficiency of the gusset bag can be remarkably improved.

  The cut-off end 1A of the bisected surface film 1 is opened by the bottom expression mechanism 60 of claim 9, and the cut-off port 3A of the horizontal gusset forming material 3 temporarily fixed to the surface film 1 is opened. The bottom surface portion 3 </ b> B located at the bottom of 10 can be formed.

  As in the tenth aspect, according to the gradient portion 90 of the feed mechanism 20, even when the transport distance of the surface film 1 and the like by the feed mechanism 20 is increased, the transport distance can be shortened through the gradient portion 90. Moreover, this gradient part 90 is suitable also as a position which confirms an important process.

Schematic which shows one Example of this invention manufacturing method. Schematic which shows the bottom part formation means of this invention manufacturing method. The schematic perspective view which shows one Example of this invention manufacturing apparatus. The schematic plan view which shows the horizontal gusset molding material arrangement | positioning mechanism of this invention manufacturing apparatus. The schematic plan view which shows the bottom part expression mechanism of this invention manufacturing apparatus. Schematic which shows one Example of the bottom part sealing mechanism of this invention manufacturing apparatus. The schematic plan view which shows one Example of the state shape | molded with this invention manufacturing apparatus. The perspective view which shows one Example of the gusset bag shape | molded by this invention manufacturing apparatus. Schematic which shows the other Example of the bottom part sealing mechanism of this invention manufacturing apparatus. The schematic plan view which shows the other Example of the state shape | molded with this invention manufacturing apparatus. The perspective view which shows the other Example of the gusset bag shape | molded with this invention manufacturing apparatus. Schematic which shows the other Example of the bottom part sealing mechanism of this invention manufacturing apparatus. The schematic plan view which shows the other Example of the state shape | molded with this invention manufacturing apparatus. The perspective view which shows the other Example of the gusset bag shape | molded with this invention manufacturing apparatus. Schematic which shows the other Example of the bottom part sealing mechanism of this invention manufacturing apparatus. The schematic plan view which shows the other Example of the state shape | molded with this invention manufacturing apparatus. The perspective view which shows the other Example of the gusset bag shape | molded with this invention manufacturing apparatus. The schematic plan view which shows the Example of the state shape | molded with the conventional manufacturing apparatus.

  According to the present invention, it is possible to efficiently take two gusset bags made of synthetic resin, and at the same time, it becomes possible to simultaneously mold a flap, a handle, etc. into the openings of the two gusset bags. Achieved the goal.

  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. 8, 11, 14, and 17). .

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

  The horizontal gusset forming means 100 is a means from installing the horizontal gusset molding material 3 on the back film 2 to dividing the horizontal gusset molding material 3 into two. In other words, 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 are preliminarily installed (see FIG. 3). 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 the present invention, in order to take two gusset bags 10, a horizontal gusset forming material 3 having a length approximately twice as long as the horizontal gusset portion 13 of the gusset bag 10 to be manufactured is provided (FIGS. 7, 10, and 13). FIG. 16). Similarly, the width | variety of the surface film 1 and the back surface film 2 is formed in the width | variety of at least 2 times the height of the gusset bag 10 to manufacture. And the horizontal gusset molding material 3 which has double length between the surface film 1 and the back surface film 2 is arrange | positioned sideways (refer FIG. 1).

  In this horizontal gusset forming means 100, first, the horizontal gusset forming material 3 is placed on the back film 2 from above the back film 2 (see FIG. 3). Next, the horizontal gusset molding material 3 and the back film 2 are temporarily fixed. And the horizontal gusset molding material 3 is cut | disconnected in the position which the length of the horizontal gusset molding material 3 bisects. Thereafter, the surface film 1 is polymerized on the back film 2 through the cut horizontal gusset molding material 3. In the illustrated example, the horizontal gusset molding material 3 is divided into two halves together with the back film 2. It is also possible to bisect the back film 2.

  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 surface film 1 is temporarily fixed on the horizontal gusset molding material 3, and in this state, the surface film 1 is cut along the cutting position of the horizontal gusset molding material 3. At this time, since the cut end portion of the horizontal gusset molding material 3 already divided into two is temporarily fixed to the lower surface of the cut surface film 1, the cutting portion of the surface film 1 is opened and the horizontal gusset molding material 3 is cut. The ends open (see FIG. 2). Next, each cutting port 3A of the horizontal gusset molding material 3 is further opened, and the bottom portion 3B of the horizontal gusset molding material 3 located at the bottom of the gusset bag 10 is folded back (see FIG. 5). At this time, by opening the cut end portion 1A of the surface film 1 divided in two from the longitudinal center portion of the horizontal gusset molding material 3 in the width end portion direction, the cut opening 3A of the horizontal gusset molding material 3 is opened, and the gusset bag 10 The bottom face part 3B of the horizontal gusset molding material 3 located at the bottom part of the sheet is exposed. Then, one bottom film 4 is bonded to each bottom surface portion 3B. Although the illustrated bottom film 4 is a separate film from the surface film 1, the bottom film 4 can be formed separately from the surface film 1 (not shown). Finally, it is a step of closing the folded bottom surface portion 3B together with the bottom film 4.

  The joining means 300 is means for joining the front film 1 and the back film 2 and then cutting along the outline of the gusset bag 10 to simultaneously mold the two gusset bags 10 (see FIG. 1). 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. Then, the front film 1 and the back film 2 are cut along the outline of the gusset bag 10. At this time, the two gusset bags 10 are in a state where the square bottom portions 14 are opposed to each other (see FIGS. 7, 10, 13, and 16). As a result, the openings of the gusset bag 10 are formed so as to face outward. Therefore, by slightly changing the joining means 300, the header 16, the flap 17, the handbag 18, the sealing chuck 19 and the like can be provided in the opening 15 of the gusset bag 10 as necessary.

  6 to 8 show a process of forming the header 16 and the flap 17 at the position of the opening 15 of the pair of gusset bags 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 ends of the width of the back film 2 (see FIG. 6). A header 16 and a flap 17 are formed on the gusset bag 10 formed by such a process (see FIG. 8). In the example of illustration, when folding the flap 17, the elongate adhesive tape 17A is distribute | arranged inside the flap 17 (refer FIG. 6). And when the front film 1 and the back film 2 are cut | disconnected and the two gusset bags 10 are formed, the gusset bag 10 with the flap 17 is formed (refer FIG. 7).

  9 to 11 show a process of forming the handbag 18 at the position of the opening 15 of the pair of gusset bags 10 in the joining means 300. That is, it is a step of arranging a pair of bonding films 6 between the front film 1 and the back film 2 and arranging a pair of handbags 18 to form the handbags 18 at the positions of the openings 15 (see FIG. 9). . In the illustrated example, a pair of bonding films 6 is arranged on the surface where the surface film 1 and the back film 2 are directly polymerized, and a handbag 18 is interposed between the bonding film 6, the surface film 1 and the back film 2. And this handbag 18 is welded to the surface film 1 and the back film 2 with the joining film 6 (refer FIG. 10). And if the front side surface 1 and the back surface film 2 are cut | disconnected, the gusset bag 10 with the handbag 18 will be formed (refer FIG. 11).

  FIGS. 12 to 14 show a process of forming the hand hole 18 </ b> A at the position of the opening 15 of the pair of gusset bags 10 in the joining means 300. In the example of illustration, a pair of reinforcement film 7 is arrange | positioned between the surface film 1 and the back surface film 2, and it joins to the position of the opening part of a pair of gusset bag 10 (refer FIG. 12). Further, it is a step of opening the hand-carrying hole 18A at the position of the opening 15 of the portion reinforced by the reinforcing film 7. And if the front side surface 1 and the back surface film 2 are cut | disconnected (refer FIG. 13), the gusset bag 10 provided with 18 A of handbag holes will be formed (refer FIG. 14).

  15 to 17 show a process of forming the sealing chuck 19 at the position of the opening 15 of the pair of gusset bags 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 surface film 1 and the back film 2 with the adhesive tape 9 (refer FIG. 15). Next, the chuck band 8 is disposed between the front film 1 and the back film 2, and the chuck band 8 is joined to the position of the opening 15 of the pair of gusset bags 10 (see FIG. 16). As a result, the sealing chuck 19 is provided in the opening 15 of each gusset bag 10 (see FIG. 17).

  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 device of the present invention that takes two synthetic resin gusset bags 10 includes a feed mechanism 20, a horizontal gusset forming material arrangement mechanism 30, a back surface heating seal mechanism 40, a surface heating seal mechanism 50, and a bottom portion expression mechanism. 60, a bottom seal mechanism 70, and a joining mechanism 80 (see FIG. 3).

  The feed mechanism 20 is a mechanism that moves the front film 1 and the back film 2 along the longitudinal direction (see FIG. 3). In the illustrated example, a feeding mechanism 20 using a plurality of rollers 21 is shown. The feeding mechanism 20 includes a slope portion 90 that is lifted obliquely upward and returned to the horizontal again while the front film 1 and the back film 2 are horizontally moved along the longitudinal direction. Then, a part of a bottom part expression mechanism 60 and a bottom part seal mechanism 70 described later are arranged in the gradient part 90.

  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. 4). The illustrated horizontal gusset forming material arrangement mechanism 30 includes a cutter 31 for cutting the horizontal gusset forming material 3 having a length twice that 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 A horizontal gusset molding material 3 is placed on the back film 2 from above (see FIG. 3). The gripping tool 33 in the illustrated example shows a configuration in which the horizontal gusset molding material 3 is adsorbed by suction air, but the configuration of the gripping tool 33 can be arbitrarily changed such as another cam system (see FIG. 4). ). Then, the horizontal gusset forming material 3 placed on the back film 2 is temporarily fixed with a sealing hot plate 41 described later, and then a cutter 36 for dividing the horizontal gusset forming material 3 into two is provided. Reference numeral 37 in the drawing denotes a sealing device that temporarily closes the ends of the film material for the horizontal gusset portion 13 folded into a substantially cylindrical shape so as not to be opened.

  The back surface heat sealing mechanism 40 is a mechanism for temporarily adhering the horizontal gusset molding material 3 onto the back film 2. 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 (see FIG. 3).

  The surface heating sealing mechanism 50 is a mechanism for temporarily adhering the surface film 1 onto the horizontal gusset molding material 3. In the illustrated example, the horizontal gusset molding material 3 temporarily bonded on the back film 2 is divided into two parts, and then the surface film 1 is arranged on the horizontal gusset molding material 3, and then the sealing is performed from the upper surface side of the surface film 1. The cutting end of the horizontal gusset molding 3 and the surface film 1 are temporarily bonded by applying a hot plate 51 (see FIG. 3).

  The bottom part expression mechanism 60 is a mechanism that folds back the bottom surface part 3B of the horizontal gusset molding material 3 (see FIG. 3). The bottom part exposing mechanism 60 is provided with a cutter 61 that bisects the surface film 1 along the longitudinal direction. And the expansion roller 62 which contacts the cut end part 1A of the bisected surface film 1 is arrange | positioned, and the cut end part 1A of the surface film 1 is opened with this expansion roller 62 (refer FIG. 5). If it does so, the cutting opening 3A of the horizontal gusset molding material 3 temporarily fixed to this surface film 1 will also open with the cutting edge part 1A. Further, a folding plate 63 that contacts the side surface of the cutting opening 3A of the gusset forming material 3 is disposed. The folding plate 63 is a member that forms the bottom surface portion 3B located at the bottom of the gusset bag 10 by folding the cutting opening 3A of the lateral gusset molding material 3 onto the lateral gusset molding material 3. The folding plate 63 in the illustrated example has a configuration of a pair of plates that sandwich the cutting port 3 </ b> A widened by the spreading roller 62 from above and below.

  Further, the portion where the folding plate 63 of the bottom portion exposing mechanism 60 is disposed is disposed on the gradient portion 90 of the feeding mechanism 20 (see FIG. 3). If a part of the bottom part exposing mechanism 60 is arranged at such an inclined position, it becomes easy to expand the cut end 1A of the cylinder 1 and the cut opening 3A of the horizontal gusset molding material 3, and the expansion process is confirmed. There is also an advantage that it becomes easy.

  The bottom seal mechanism 70 is a mechanism that temporarily bonds one bottom film 4 to the two bottom surface portions 3B of the expanded horizontal gusset molding material 3 (see FIG. 3). In the example of illustration, it adhere | attaches with the hot plate 72 for temporary fixing. At this time, the bottom film 4 is bonded to the portion where the cutting opening 3A of the horizontal gusset molding material 3 is linear (see FIG. 5). Further, the bottom seal mechanism 70 is provided with a closing tool 71. The closing tool 71 is configured to close the bottom surface portion 3 </ b> B that is folded back together with the bonded bottom film 4. In the illustrated example, a plate-like closing tool 71 having an opening having a substantially C shape is provided. Then, the cut end 3A of the horizontal gusset 3 that has been folded back together with the surface film 1 is brought into contact with the bottom film by bringing the folded end 1A of the surface film 1 into contact with the substantially C-shaped opening. All four are configured to be closed.

  Further, the closing tool 71 of the bottom seal mechanism 70 is also disposed on the gradient portion 90 of the feed mechanism 20 (see FIG. 3), similarly to the bottom expression mechanism 60. When the closing tool 71 is disposed at such an inclined position, the folded cut end 1A and the cut opening 3A can be easily returned to the original position, and there is an advantage that the process of sealing the bottom can be easily confirmed.

  The joining mechanism 80 is a mechanism for taking two gusset bags 10 by joining the front film 1 and the back film 2 and then cutting them (see FIGS. 3, 6, 9, 12, and 15). . The joining mechanism 80 includes a vertical sealing hot plate 81 and a horizontal sealing hot plate 82. 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 81 for vertical sealing and the hot plate 82 for horizontal sealing. Further, simultaneously with or after the joining, the front film 1 and the back film 2 are cut along the outlines of the two gusset bags 10 with the square bottom portions 14 facing each other (see FIGS. 7, 10, 13, and 16). ).

  A joining mechanism 80 shown in FIG. 6 is a mechanism for forming 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 back the extending member 2A extended from both width ends of the back film 2 to form the header 16 and the flap 17 at the position of the opening 15, the reinforcing hot plate 83 for welding the folded portion of the header 16 is disposed. ing. Further, the welded header 16 is provided with a heating pin 84 that opens the locking hole 16A.

  In the joining mechanism 80 shown in FIG. 9, a handbag mounting device 85 for arranging a pair of handbags 18 is disposed between the front film 1 and the back film 2. This handbag mounting device 85 cuts a sheet to form a pair of handbags 18 and is arranged between the front film 1 and the back film 2. Further, a reinforcing hot plate 83 for bonding the pair of bonding films 6 is provided. Then, a pair of bonding films 6 are arranged on the surface where the surface film 1 and the back film 2 are directly polymerized, and the handbags 18 are bonded together with the bonding film 6 to the surface with the handbags 18 interposed therebetween. It welds to the film 1 and the back film 2 (refer FIG. 10).

  A joining mechanism 80 shown in FIG. 12 is a mechanism for forming a hand-hole 18 </ b> A at the position of the opening 15 of the gusset bag 10. That is, a pair of reinforcing films 7 disposed between the front film 1 and the back film 2 are welded by the reinforcing hot plate 83 to reinforce the position of the opening of the gusset bag 10. Furthermore, a handbag hole 18A is opened by a hot plate 87 for opening in a portion reinforced with the reinforcing film 7, thereby forming a gusset bag 10 having the handbag hole 18A (see FIG. 14).

  A joining mechanism 80 shown in FIG. 15 is a mechanism for forming the sealing chuck 19 on the gusset bag 10 by the chuck strip 8. First, the adhesive tape 9 is arranged on the opening side end portion of the horizontal gusset molding material 3 and bonded to the front film 1 and the back film 2 by the reinforcing hot plate 83. Next, the chuck strip 8 is disposed between the front film 1 and the back film 2 and is welded by the chuck hot plate 86. And if it cut | disconnects along the shape of the gusset bag 10 with the hot plate 81 for vertical seals, and the hot plate 82 for horizontal seals, the gusset bag 10 with the sealing chuck 19 will be formed (refer FIG. 17).

  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 Hand carry 18A Hand carry hole 19 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 36 Cutter 37 Sealing tool 37
40 Back Heating Sealing Mechanism 41 Sealing Hot Plate 50 Surface Heating Sealing Mechanism 51 Sealing Hot Plate 60 Bottom Display Mechanism 61 Cutter 62 Expanding Roller 63 Folding Plate 70 Bottom Sealing Mechanism 71 Closure 72 Temporary Fixing Hot Plate 80 Joining mechanism 81 Hot plate for vertical seal 82 Hot plate for horizontal seal 83 Hot plate for reinforcement 84 Heating pin 85 Hand mount device 86 Hot plate for chuck 87 Hot plate for opening 90 Gradient part 100 Horizontal gusset forming means 200 Bottom part forming means 300 Joining means

Claims (10)

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 A horizontal gusset forming means for arranging the horizontal gusset forming material so as to be orthogonal to the longitudinal direction of the strip-shaped back film forming the bottom, and forming a bottom portion for arranging the strip-shaped bottom film for forming the corner bottom of the gusset bag at the bottom In a method for producing a synthetic resin gusset bag comprising means, and a joining means for joining a lateral gusset molding material and a bottom film to a surface film and a back film, and cutting the surface film and the back film along the contour of the gusset bag ,
The horizontal gusset forming means places a horizontal gusset forming material having a length twice that of the horizontal gusset portion on a back film having a width that is twice the height of the gusset bag to be manufactured, and temporarily fixes it. The step of cutting the horizontal gusset molding material at a position where the length of the horizontal gusset molding material bisects, and the step of polymerizing the surface film on the back film through the cut horizontal gusset molding material,
The bottom forming means opens each cut portion of the horizontal gusset molding material, folds the bottom portion of the horizontal gusset molding material located at the bottom of the gusset bag, and attaches one bottom film to the two bottom surface portions and then folds back. A step of closing the bottom surface
The said joining means is a manufacturing method of the synthetic resin gusset bag characterized by including the process of cut | disconnecting a surface film and a back surface film along the outline of two gusset bags with which the square bottom faced.   In the bottom forming means, a step of temporarily fixing the surface film on the horizontal gusset molding material, a step of cutting the surface film along a cutting position of the horizontal gusset molding material, and a step of cutting the surface film Opening the cut end of the horizontal gusset molding material by opening the cut end portion toward the width end portion of the surface film, and exposing the bottom surface portion of the horizontal gusset molding material located at the bottom of the gusset bag. The manufacturing method of the synthetic resin gusset bag of Claim 1.   The joining means includes a step of forming a header and a flap at the position of the opening of the pair of gusset bags by folding back an extending member extended from both width ends of the back film, and the header at the opening of each gusset bag And a method for producing a synthetic resin gusset bag according to claim 1.   The bonding means includes a step of bonding a pair of bonding films and a pair of handbags arranged between the front film and the back film at positions of the openings of the pair of gusset bags, and each gusset bag. The manufacturing method of the synthetic resin gusset bag of Claim 1 which provides a handbag in the opening part of this.   In the joining means, a pair of reinforcing films disposed between the front film and the back film are joined to the positions of the openings of the pair of gusset bags, and a hand hole that penetrates the reinforcing film is opened. The manufacturing method of the synthetic resin gusset bag of Claim 1 which has a process and provides a handbag in the opening part of each gusset bag.   The joining means includes a step of joining a band for a chuck disposed between the front film and the back film to a position of each opening of the pair of gusset bags, and sealing the opening of each gusset bag The method for producing a synthetic resin gusset bag according to claim 1, wherein a chuck is provided. 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;
A horizontal gusset forming material arrangement mechanism that cuts a horizontal gusset molding material that is twice as long as a horizontal gusset portion of a gusset bag to be manufactured and installs the horizontal gusset molding material on a back film to bisect the horizontal gusset molding material; A back surface heating seal mechanism for temporarily adhering a horizontal gusset molding material on the back film;
A surface heating seal mechanism for temporarily adhering a surface film on a horizontal gusset molding material;
Opening the cut end of the surface gusset forming material in the width direction toward the width end by opening the cut end of the surface film divided in half from the longitudinal center of the horizontal gusset forming material. A bottom expression mechanism that folds back and forth,
A bottom seal mechanism provided with a closure configured to close one bottom film folded together with the adhered bottom film while bonding one bottom film to the two bottom portions of the horizontal gusset molding;
It has a joining mechanism that joins the horizontal gusset molding material and the bottom film to the front film and the back film, and cuts the top film and the back film along the outlines of the two gusset bags with the square bottom portions facing each other. An apparatus for manufacturing synthetic resin gusset bags.   In the horizontal gusset forming material arrangement mechanism, a cutter that cuts a predetermined length of the horizontal gusset forming material above the back film, and a movement that installs the predetermined length of the horizontal gusset forming material on the back film from above the back film. The manufacturing apparatus of the synthetic resin gusset bag of Claim 7 provided with the apparatus and the cutter which bisects the horizontal gusset molding material mounted on the back film.   The bottom expression mechanism includes a cutter that bisects the surface film along the longitudinal direction of the surface film, and a cutting end portion of the bisected surface film, and cutting the horizontal gusset molding material temporarily fixed to the surface film. An expansion roller that opens the mouth, and a folding plate that forms a bottom surface portion that is located at the bottom of the gusset bag by contacting the side surface of the gusset molding material that is folded back on the horizontal gusset molding material. The manufacturing apparatus of the synthetic resin gusset bag of 7.   The feeding mechanism includes a slope portion that is lifted obliquely upward and returned to the horizontal direction while horizontally moving the front film and the back film along the longitudinal direction, and includes a bottom exposing mechanism and a bottom sealing mechanism. 8. The apparatus for manufacturing a synthetic resin gusset bag according to claim 7, wherein the portion is disposed on the slope portion.

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