JP4758508B2 - Packaging bag manufacturing method and bag making machine - Google Patents

Description

The present invention relates to the manufacture how you and bag-making machine of the packaging bag, in particular, or to display the items in the display shelf, for the manufacture how you and bag-making machine of the packaging bag to be used for or to carry.

  Conventionally, various contrivances have been made for packaging bags used when products are hung on a display bar at a store to improve the appearance when products are put. In particular, when a product with a large thickness is put in a packaging bag, the packaging bag tends to deteriorate in appearance, such as a corner of the packaging bag protruding. FIG. 11 is a perspective view showing an example of a conventional packaging bag 80 for storing a thick product. A packaging bag 80 shown in FIG. 11 includes a bag main body 82 and a header portion 81 formed on the upper portion of the bag main body 82, and the bag main body from the lower end of the header portion 81 toward both side portions of the bag main body 82. A shoulder drop 85 is formed by cutting each of the bags 82 obliquely, and a gusset 83 is folded at the upper end of the bag body 82. Thereby, when a thick product is put, the gusset 83 spreads, and it becomes easy to store the thick product, and the appearance of the packaging bag 80 is improved.

  FIG. 12 is a cross-sectional view of a conventional packaging bag 90 provided with a gusset 94 on the side surface. As shown in FIG. 12, in the conventional packaging bag 90, welding margins 95 having a predetermined width are provided on both sides of the gusset 94, and the side edges of the front film 92 and the back film 93 are formed by the welding margin 95. It is welded to the side part of the gusset 94. Even when the gusset 94 is provided on the side surface of the packaging bag 90, the gusset 94 spreads when a thick product is put, and the product is easily stored.

  Further, in Patent Document 1, between the side part of the front film made of a thermoplastic resin and the side part of the back film, a gusset that is folded in two in the width direction is arranged with the fold inside, A method for manufacturing a gusseted packaging bag that is thermally welded to the sides of the front film and the back film is described. Specifically, first, a gusset sheet made of a thermoplastic resin, which is folded in two on the upper surface of a sheet for back film having a low melting temperature so that both ends in the width direction are aligned at the center, It is placed so as to be orthogonal to the longitudinal direction. The gusset sheet is a sheet obtained by laminating a sheet having a high melting temperature on a sheet having a low melting temperature, and is folded in two so that the sheet having a high melting temperature is on the inside. Next, a sheet for the front film having a low melting temperature is placed on the gusset sheet so as to overlap the sheet for the back film. Then, they are integrally heat-welded. At this time, in the folded gusset sheet, only the outer surface sheet having a low melting temperature is welded to the front film sheet and the rear film sheet, respectively, and the inner sheet is not separated from each other and is maintained in a separated state. Finally, the front film sheet and the back film sheet are cut along the center line of the gusset sheet to produce a gusseted packaging bag.

JP-A-8-28289

  However, since the size of the shoulder drop 85 varies depending on the thickness of the product, a jig for forming the shoulder drop 85 must be prepared for each product when the packaging bag 80 shown in FIG. 11 is manufactured. Thus, if the jig | tool for forming the shoulder drop 85 is prepared for every goods, the manufacturing cost of the packaging bag 80 will become high by that much. Further, if a process of forming the shoulder drop 85 or forming a gusset 83 at the upper end of the bag body 82 is added, the manufacturing process of the packaging bag 80 becomes complicated. Furthermore, even if the shoulder bag 85 is provided on the packaging bag 80, the appearance of the packaging bag 80 when storing a thick product is not good for the effort and cost.

  Since the packaging bag 90 shown in FIG. 12 is provided with a welding margin 95 around the gusset 94, the appearance of the packaging bag 90 is deteriorated when a product is inserted.

  Moreover, in the manufacturing method of the packaging bag with a gusset described in the literature 1, after thermally bonding the gusset sheet to each of the front film sheet and the back film sheet, along the center line of the gusset sheet, The front film sheet and the back film sheet are cut. Thus, since heat welding and cutting are performed in separate steps, the manufacturing method of the gusseted packaging bag becomes complicated and the manufacturing cost increases.

  Therefore, an object of the present invention is to provide a method for manufacturing a packaging bag that has a good appearance even when a thick product is inserted, and that can reduce the manufacturing cost and simplify the manufacturing process.

1st invention is a manufacturing method of the packaging bag for accommodating goods,
Forming a fold to fold a sheet of synthetic resin in the longitudinal direction into a first sheet and a second sheet;
A step of inserting a sachet between the first sheet and the second sheet using a turntable in which a plurality of suction plates provided with a plurality of suction cups are radially attached;
Welding the bottom of the pouch to the sheet;
A sheet fusing step of fusing the sheet containing the sachet in a direction orthogonal to the longitudinal direction of the sheet,
The step of inserting the pouch includes
Supplying the sachet on the suction plate;
Adsorbing the sachet on the adsorption plate;
By rotating the turntable by a predetermined angle, the bottom portion of the sachet is sandwiched between the first sheet and the second sheet, and the side portion of the sachet is the first sheet and Inserting the sachet sucked by the suction plate between the first sheet and the second sheet so as to be orthogonal to the longitudinal direction of the second sheet. And

According to a second invention, in the first invention,
The sachet is characterized in that a material having a melting temperature higher than that of the synthetic resin is applied to the inner surface of the position to be blown in the sheet fusing step.

According to a third invention, in the second invention,
The substance having a high melting temperature is medium.

4th invention is 1st or 2nd invention,
The step of inserting the sachet inserts the sachet so that a center line of the sachet coincides with a fusing line to melt the sheet,
The sheet fusing step is characterized by fusing the sheet including the sachet along the fusing line.

According to a fifth invention, in the first or second invention,
The step of inserting the sachet inserts the sachet by shifting the center line of the sachet by a desired distance in the longitudinal direction of the sheet from the fusing line where the sheet is to be fused,
The sheet fusing step is characterized by fusing the sheet including the sachet along the fusing line.

A sixth invention is the second invention, wherein:
After the step of welding the sachet to the sheet, and before the sheet fusing step, the sheet is opened from the position away from the fold by a predetermined distance along the fusing line to be cut from the fold toward the crease. Thus, the sheet including the sachet is melted in a V shape.

In a seventh invention according to the first or second invention,
Encapsulating a tape-like member thicker than the sheet between the first sheet and the second sheet along the crease;
In the sheet fusing step, the header portion is formed by fusing the tape-shaped member enclosed together with the first and second sheets.

8th invention is a packaging bag provided with the front film and back film which are equal in width, and the 1st and 2nd side film each arrange | positioned between each side part of the said front film and the said back film, respectively. A bag making machine,
A first sheet folding portion that folds a sheet of synthetic resin to form a fold;
A sachet welded portion for inserting and welding a sachet between the folded sheets;
A sheet fusing part for fusing the sheet containing the sachet in a direction perpendicular to the longitudinal direction of the sheet;
The sachet weld is
A plurality of suction plates with a plurality of suction cups provided on the surface are attached radially, and after the sachet is adsorbed to the suction plate, the bottom portion of the sachet is sandwiched between the folded sheets, and the sachet A turntable for inserting the sachet between the folded sheets by rotating until the side part is perpendicular to the longitudinal direction of the sheet;
A sachet welding blade for welding the sachet inserted between the folded sheets to the sheet.

In a ninth aspect based on the eighth aspect,
The sheet forming apparatus further includes a header forming portion that forms a header region by enclosing a tape-like member thicker than the sheet along the fold between the sheet folded in half.

In a tenth aspect based on the eighth aspect,
A V-shaped fusing part having a V-shaped blade for cutting the sheet including the sachet V-shaped from the position on the fusing line where the sheet is to be fused between the sachet welding part and the sheet fusing part. Is further provided.

The eleventh invention is the eighth invention, wherein
The sachet welding part further includes a cassette for stacking and storing a plurality of the sachets,
The suction plate sucks the sachet from the lower surface of the cassette by the plurality of suction cups when it moves directly below the cassette.

In a twelfth aspect based on the eighth aspect,
A dance roll section for forming a first region for moving the sheet at a constant speed and a second region for moving the sheet intermittently;
An adhesive application unit that is provided in the first region and applies an adhesive on the sheet;
The first sheet folding part includes a second sheet folding part for folding the sheet in half so that a second sheet having a width smaller than that of the first sheet overlaps the upper surface of the first sheet,
The adhesive application unit continuously applies the adhesive to an end portion of the first sheet that is not covered with the second sheet.

  According to the first aspect of the invention, in the packaging bag manufacturing method, the turntable is used to insert the small bag between the first sheet and the second sheet folded in half. Accordingly, the first portion is so arranged that the bottom portion of the pouch is sandwiched between the first sheet and the second sheet, and the side portion of the pouch is orthogonal to the longitudinal direction of the first and second sheets. The pouch can be easily and reliably inserted and welded at a predetermined position between the second sheet and the second sheet. Therefore, by fusing the first and second sheets including the sachet, a packaging bag that can be used as a gusset or as a side bag can be produced by a simple manufacturing process. In addition, the manufacturing cost of the packaging bag can be reduced.

  According to the second aspect, when the first and second sheets are melted, the inner surface of the sachet that is melted at the same time is coated with a substance having a melting temperature higher than that of the synthetic resin. For this reason, even if the sachet is melted along the fusing line, the substance having a high melting temperature does not melt, so that the inner surface of the melted sachet piece is kept in a separated state. Thereby, since a small bag piece becomes a side film of a packaging bag and functions as a gusset, it becomes easy to put a thick product into the packaging bag.

  According to the third aspect of the present invention, when medium is used as a substance having a high melting temperature, the medium is a thin and transparent ink. do not know. For this reason, the appearance of the packaging bag does not deteriorate. Moreover, since it is not necessary to remove the remaining medium after manufacturing the packaging bag, the manufacturing cost of the packaging bag can be suppressed.

  According to the fourth aspect of the invention, since the sachet is inserted and welded between the first and second sheets so that the center line of the sachet coincides with the fusing line of the sheet, the sheet is fused by the fusing line. When done, the pouch is also melted along its centerline. Thereby, the packaging bag which made the width | variety of the left and right side film of a packaging bag equal, or made the width | variety of right and left side bags equal can be manufactured with a simple manufacturing method.

  According to the fifth aspect, since the center line of the sachet is shifted from the fusing line of the sheet by a desired distance and the sachet is inserted and welded between the first and second sheets, the fusing of the sheet is performed. When blown by the wire, the pouch is blown at a position displaced from the center line. Thereby, the packaging bag which changed the width | variety of the left and right side film of a packaging bag, or changed the width | variety of the left and right side bag can be manufactured with a simple manufacturing method.

  According to the sixth invention, after the sachet is welded to the sheet, the sheet and the sachet are formed so as to open toward the crease of the sheet from a position away from the fold along the fusing line by a predetermined distance. V-shaped fusing. The ends of the first and second sheets melted in a V-shape and the melted ends of the pouches are welded to form a ship bottom structure. Thereby, the packaging bag which has ship bottom structure can be manufactured with a simple manufacturing method.

  According to the seventh invention, the header region including the tape-shaped member enclosed between the first sheet and the second sheet along the fold is formed in the first and second sheets in the sheet fusing process. Since the header part is formed by fusing at the same time, the packaging bag having the header part can be manufactured by a simple manufacturing method.

  According to the eighth aspect of the invention, the pouch welding portion of the bag making machine includes the turntable that sucks the pouch on the suction plate and rotates the sucked pouch by a predetermined angle, and the pouch welding blade that welds the pouch to the sheet. Have. As a result, the sachet welded portion is easily and reliably inserted between the folded sheet so that the side portion of the sachet is perpendicular to the longitudinal direction of the sheet, and is welded to the sheet. be able to. For this reason, the bag making machine can easily manufacture a packaging bag including a side film or a side bag that functions as a gusset by fusing a sheet including a small bag with a sheet fusing part.

  According to the ninth aspect, the bag making machine melts the header region formed by the header forming portion simultaneously with the sheet by the sheet fusing portion. Thereby, the bag making machine can easily manufacture a packaging bag further including a header portion on an upper portion of the packaging bag including a side film or a side bag that functions as a gusset.

  According to the tenth aspect of the invention, the bag making machine melts the sheet including the sachet using a V-shaped blade opened from the position on the fusing line toward the crease, and further fusing by the sheet fusing part. A packaging bag having a bottom structure on the bottom can be easily manufactured.

  According to the eleventh aspect of the invention, the sachet welding portion of the bag making machine includes the cassette storing the sachets. When the suction plate attached to the turntable moves directly under the cassette, the bag can be picked up and taken out from the cassette, so that the bag making machine can easily manufacture the packaging bag.

  According to the twelfth aspect of the invention, since the adhesive application section of the bag making machine is provided in the first region where the sheet is moved at a constant speed, the wide first of the folded sheets. The adhesive can be continuously applied to the end of the sheet. Thereby, the bag making machine can easily manufacture a packaging bag in which an adhesive region is formed.

(A) is a perspective view which shows the folded state of the packaging bag which concerns on the 1st Embodiment of this invention, (b) is a state when opening the opening part of the packaging bag shown to (a) (C) is a perspective view which shows a state when goods are accommodated in the packaging bag shown to (a). It is a perspective view which shows the shape of a small bag. It is a figure which shows the sheet | seat on which the medium was printed. It is a perspective view which shows the structure of the bag making machine used in order to manufacture the small bag shown in FIG. It is a perspective view which shows the structure of the bag making machine used for manufacture of the packaging bag shown to Fig.1 (a). It is an enlarged view of the small bag welding part of the bag making machine shown in FIG. (A) is a perspective view which shows the folded state of the packaging bag which concerns on the 1st modification of 1st Embodiment, (b) expanded the opening part of the packaging bag shown to (a). It is a perspective view which shows a state, (c) is a perspective view which shows the state which accommodated the goods in the packaging bag shown to (a). (A) is a perspective view which shows the folded state of the packaging bag which concerns on the 2nd modification of 1st Embodiment, (b) is when goods are put into the packaging bag shown to (a) It is a perspective view which shows the state of. (A) is a perspective view which shows the folded state of the packaging bag which concerns on the 2nd Embodiment of this invention, (b) shows the state which expanded the opening part of the packaging bag shown to (a). It is a perspective view, (c) is a perspective view which shows a state when putting goods into the packaging bag shown to (a). It is a perspective view which shows the structure of the bag making machine used for manufacture of the packaging bag shown to Fig.9 (a). It is a perspective view which shows an example of the conventional packaging bag which accommodates goods with thick thickness. It is sectional drawing of the conventional packaging bag which provided the gusset in the side surface.

<1. First Embodiment>
<1.1 Shape of packaging bag>
Fig.1 (a) is a perspective view which shows the folded state of the packaging bag 10 which concerns on the 1st Embodiment of this invention, FIG.1 (b) shows the packaging bag 10 shown to Fig.1 (a). It is a perspective view which shows a state when the opening part 16 is opened, and FIG.1 (c) is a perspective view which shows a state when goods are accommodated in the packaging bag 10 shown to Fig.1 (a). 1A to 1C are diagrams viewed from the bottom side of the packaging bag 10 in order to make the shape of the packaging bag 10 easier to understand. The upper part (upper end) may be described, and the left side may be described as the lower part (lower end).

  As shown in FIG. 1A, a packaging bag 10 according to the present embodiment is provided on a front film 12 and a back film 13 in which a film made of a synthetic resin is folded in two at a fold line 11 and an upper portion of the packaging bag 10. Header section 15 and two side films 14 functioning as gussets, each provided between the side portions on both sides of the front film 12 and the side portions on both sides of the back film 13. Here, the “front film 12” and the “back film 13” are expressions used for convenience of description, and are expressions for distinguishing each film when one film is folded in two at the fold line 11.

  As shown in FIG. 1A, the header portion 15 is formed with a through hole 15a for allowing the packaging bag 10 containing the product to pass through the bar of the display shelf. In the lower part of the packaging bag 10, an opening 16 for taking in and out the product is provided. The back film 13 is longer than the front film 12, and an adhesive region 13a coated with an adhesive with a predetermined width is formed at the lower end of the back film 13, and a release material (not shown) is formed on the surface of the adhesive region 13a. Is affixed.

  One side of the side film 14 is heat welded without providing a welding margin on the side of the front film 12, and the other side is heat welded without providing a welding margin on the side of the back film 13. Has been. Thereby, the appearance of the packaging bag 10 can be improved. When no product is put in the packaging bag 10, the side film 14 folded in the width direction is folded in half between the front film 12 and the back film 13 with the fold inside, and the upper end of the side film 14 is folded. Are thermally welded to the inner surfaces of the front film 12 and the back film 13 while being sandwiched between the front film 12 and the back film 13. The lower end of the side film 14 is substantially at the same position as the lower end of the front film 12, and the side portions of the side film 14 are not welded together. Thereby, the side film 14 functions as a gusset.

  As shown in FIG. 1B, when the product is put into the packaging bag 10, the side film 14 functions as a gusset, so that the opening 16 is greatly expanded. As a result, even with a thick product such as a lunch box, the product can be easily put in and out of the packaging bag 10. Moreover, since the both ends of the header part 15 are melted | fused so that it may be in a straight line with the both-sides side part of the front and back films 12 and 13, when a product is put in, it will fit neatly. Thereby, the appearance of the packaging bag 10 in a state in which the product is stored can be improved.

  Further, since the upper end of the side film 14 is welded to the inner surfaces of the front film 12 and the rear film 13 in the vicinity of the header portion 15, when the product is put in the packaging bag 10, the upper end portion of the packaging bag 10 is the product. Spread in the thickness direction. As a result, the packaging bag 10 can be stored with good appearance even for a thick product.

  As shown in FIG. 1 (c), after putting the product in the packaging bag 10, the release material attached to the lower end of the back film 13 is peeled off to expose the adhesive region 13 a, and the back film 13 is attached to the front film 12. If pasted on the surface, the opening 16 is covered with the back film 13. Thereby, the packaging bag 10 containing the product can be suspended from the display shelf.

<1.2 Manufacturing method of packaging bag>
Before describing the manufacturing method of the packaging bag 10, the small bag 50 used for manufacturing the packaging bag 10 will be described. FIG. 2 is a perspective view showing the shape of the pouch 50. As shown in FIG. 2, the pouch 50 includes a front film 51 and a back film 52 that are folded in the middle so that both ends overlap each other, and the shape of the pouch 50 is that of the front film 51 and the back film 52. The side portions on both sides are in the form of an envelope, each of which is thermally welded and has an opening 54 formed at the top. The “front film 51” and the “back film 52” are expressions used for convenience of explanation, and are expressions for distinguishing each film when one film is folded in half. On the inner surface near the center of the front film 51 and the back film 52 of the sachet 50, a printing region 55 is formed in which a medium is printed with a predetermined width from the upper end to the lower end. Here, the medium is a transparent ink for reducing the color density without changing the characteristic value of the ink by mixing with the printing ink.

  Next, a method for printing medium on a synthetic resin sheet for manufacturing the pouch 50 will be described. Medium is printed on a sheet made of synthetic resin using known intaglio printing. Specifically, a depression is formed in a cylindrical plate cylinder (cylinder) in accordance with the printing shape of the medium, and the depression is filled with the medium. Then, by sandwiching the sheet between the plate cylinder and the impression cylinder, the medium contained in the depression of the plate cylinder is pressed against the sheet, and the medium is transferred to the sheet. In this way, the medium is printed on the sheet. FIG. 3 is a view showing a sheet 60 on which a medium is printed. As shown in FIG. 3, the sheet 60 is formed with a printing region 55 in which a medium is printed with a predetermined width from the upper end to the lower end in a direction orthogonal to the longitudinal direction. The dotted line indicates the position where the sheet 60 is thermally fused when forming the pouch 50 so that the printing area 55 is the center of the pouch 50. There is no dotted line.

  FIG. 4 is a perspective view showing a configuration of a bag making machine 70 used to manufacture the sachet 50 shown in FIG. As shown in FIG. 4, the bag making machine 70 includes a roll 71 around which a sheet 60 on which a medium is printed by intaglio printing is wound, a triangular plate 72, a roller 73, and a sheet fusing blade 74. When the sheet 60 is supplied from the roll 71 to the triangular plate 72, the triangular plate 72 overlaps the upper end and the lower end of the sheet 60 with the apex of the sheet 60 in the width direction of the sheet 60 with the surface on which the printing region 55 is formed inside. Bend it in half. The folded sheet 60 is sandwiched between two rollers 73, and a crease is formed at the center of the sheet 60. The sheet cutting blade 74 heated to a predetermined temperature is lowered at a predetermined distance from the position of the printing region 55 and pressed against the sheet 60, so that the sheet 60 is thermally fused. As a result, the side portions of the melted sheet 60 are welded. Thus, by repeating the thermal fusing of the sheet 60, the pouches 50 having the openings and the side portions thermally welded can be continuously manufactured.

  FIG. 5 is a perspective view showing a configuration of a bag making machine 100 used for manufacturing the packaging bag 10 shown in FIG. As shown in FIG. 5, the bag making machine 100 includes an original fabric supply unit 110, a sheet bending unit 120, an adhesive application unit 130, a header forming unit 140, a dance roll unit 150, a small bag welding unit 160, and a through-hole forming unit 180. Each processing part of the sheet fusing part 190 is included. In the bag making machine 100, the sheet 101 continuously moves at a constant speed from the raw fabric supply unit 110 to the header forming unit 140, and the sheet 101 moves at a high speed from the small bag welding unit 160 to the sheet fusing unit 190. Move while repeating moving and stopping for a certain time. Therefore, each processing part from the pouch welding part 160 to the sheet fusing part 190 is provided at a position where the sheet stops. As described above, a plurality of sheets 101 are formed between the header forming unit 140 and the sachet welding unit 160 so that the sheet 101 is not stretched or slackened by changing the way the sheet 101 is moved. The dance roll unit 150 is provided with a combination of the rolls 151. The dance roll unit 150 can change the movement of the sheet 101 from a method of moving at a constant speed to a method of stopping for a certain time after moving at a high speed by moving each roll 151 up and down.

  A sheet 101 is wound around the raw material supply unit 110 in a roll shape. Similar to the sheet 60, the sheet 101 is made of a synthetic resin. The sheet bending unit 120 includes a triangular plate 121 and a roller 122. When the sheet 101 is supplied from the original fabric supply unit 110, the triangular plate 121 bends the sheet 101 into two using the apex. The folded sheet 101 is sandwiched between the two rollers 122 in a state where the folded sheet 101 overlaps the top and bottom, and a fold 102 is made on the sheet 101. Therefore, in the following description, for convenience of explanation, the upper sheet is referred to as “upper sheet 103” and the lower sheet is referred to as “lower sheet 104”. The position of the triangular plate 121 is adjusted so that the width of the lower surface sheet 104 is wider than the width of the upper surface sheet 103 when the sheet 101 is folded in two by the triangular plate 121.

  The folded sheet 101 moves to the adhesive application unit 130. The adhesive application unit 130 includes a nozzle 131 that discharges the adhesive, a roller 132 that extends the discharged adhesive thinly, and a tape-shaped release material (not shown) in the adhesive application region 105 where the adhesive is expanded thinly. ) Including a release material attaching portion (not shown). An adhesive is continuously dropped from the nozzle 131 onto the end of the lower surface sheet 104 that is not covered by the upper surface sheet 103. The dropped adhesive is thinned by the roller 132, and an adhesive application region 105 having a predetermined width is formed at the end of the lower surface sheet 104. Next, a tape-like release material is continuously attached on the adhesive application region 105 at the release material attaching portion.

  The sheet 101 with the release material attached to the adhesive application region 105 moves to the header forming unit 140. The header forming part 140 includes a tape insertion part for inserting the resin tape 141 and an ultrasonic welding part for welding the upper surface sheet 103 and the lower surface sheet 104 by ultrasonic waves. In the tape insertion portion, the tape 141 having the same width as the header portion is continuously inserted up to the fold 102 of the folded sheet 101. In order to fix the inserted tape 141 along the fold line 102, the horn 142 is moved up and down along the end of the tape 141 while moving the sheet 101 at a constant speed. When the horn 142 is lowered, the tip of the horn 142 comes into contact with the top sheet 103, and the top sheet 103 and the bottom sheet 104 are instantaneously melted and joined by ultrasonic vibration and pressure (ultrasonic welding). As a result, the tape 141 is fixed to the fold 102 of the sheet 101, and the header region 106 is formed.

  The sheet 101 on which the header region 106 is formed is adjusted so as to move intermittently by the dance roll unit 150 and moves to the pouch welding unit 160. FIG. 6 is an enlarged view of the pouch welding portion 160 of the bag making machine 100 shown in FIG. As shown in FIGS. 5 and 6, the sachet welded portion 160 includes a cassette 161 for storing sachets, a turntable 162, a plurality of suction plates 163, and a sachet welded blade 165. A plurality of suction plates 163 are fixed to the surface of the turntable 162 in the radial direction so that the central angles thereof are equal. On each suction plate 163, a plurality of circular suction cups 164 are attached in a row. The circular suction cup 164 is made of, for example, silicone rubber, and a suction hole (not shown) connected to a vacuum pump is formed at the center thereof. Further, the cassette 161 is attached at a position separated from the surface of the turntable 162 by a predetermined distance so as to be parallel to the suction plate 163. Inside the cassette 161, a plurality of sachets 50 are stored with the bottom 53 thereof facing the outer peripheral direction of the turntable 162.

  When the turntable 162 rotates and the suction plate 163 stops just below the bottom surface of the cassette 161, the suction holes of the circular suction cups 164 on the suction plate 163 are evacuated. As a result, one sachet 50 is sucked onto the suction plate 163 from the cassette 161. At this time, the sucked sachet 50 is fixed with its bottom 53 directed toward the outer periphery of the turntable 162. When the pouch 50 is sucked by the suction plate 163, the turntable 162 rotates by a predetermined angle and stops so that the next suction plate 163 moves directly below the bottom surface of the cassette 161. When the next suction plate 163 stops just below the bottom surface of the cassette 161, the suction plate 163 similarly sucks one small bag 50 from the cassette 161. Thereafter, similarly, the sachets 50 are sucked from the cassette 161 to the suction plate 163 one by one.

  The turntable 162 is attached to the bag making machine 100 so as to pass between the upper sheet 103 and the lower sheet 104 of the folded sheet 101. Therefore, the suction plate 163 that has sucked the sachet 50 stops for a certain period of time at a position where the sucked sachet is perpendicular to the longitudinal direction of the sheet 101 between the upper sheet 103 and the lower sheet 104. At this time, the bottom 53 of the pouch 50 is sandwiched between the upper sheet 103 and the lower sheet 104.

  As shown in FIG. 6, when the suction plate 163 is stopped, it is heated from above the upper surface sheet 103 to a predetermined temperature, has a length similar to the width of the pouch 50, and a narrow pouch. The welding blade 165 descends onto the bottom 53 of the sachet 50 and thermally welds the bottom 53 of the sachet 50 to the upper surface sheet 103 and the lower surface sheet 104. Thereby, the pouch 50 is fixed to the upper surface sheet 103 and the lower surface sheet 104 in the vicinity of the lower end of the header region 106. Thus, the pouch 50 can be welded so as to be orthogonal to the longitudinal direction of the sheet 101 easily and reliably.

  The sheet 101 to which the sachet 50 is welded moves to the through hole forming unit 180. In the through-hole forming portion 180, a circular through-hole 15a for displaying the packaging bag 10 on the display shelf is formed. For this reason, the cylindrical blade 181 having the same size as the through hole 15a is pressed against the header region 106 to form the through hole 15a.

  The sheet 101 in which the through hole 15 a is formed in the header area 106 moves to the sheet fusing part 190. The sheet fusing part 190 includes a sheet fusing blade 191 and a cradle (not shown) that receives the sheet fusing blade 191. The sheet fusing blade 191 is a blade that is longer and narrower than the width of the lower surface sheet 104, is attached in a direction orthogonal to the longitudinal direction of the sheet 101, and is heated to a predetermined temperature. The sheet 101 stops so that the center line of the sachet 50 welded to the sheet 101 comes directly under the sheet fusing blade 191. When the sheet 101 stops, the sheet cutting blade 191 descends from above and is pressed against a cradle (not shown). Since the sheet 101 and the sachet 50 are made of the same synthetic resin, their melting temperatures are also the same. For this reason, the sheet 101 and the sachet 50 are fused simultaneously by the sheet fusing blade 191.

  When the sheet 101 and the sachet 50 are fused, the sachet 50 is fused into two sachet pieces. As a result, one side portion of the pouch piece is welded to the cut side portion of the top sheet 103, and the other side portion of the pouch piece is welded to the cut side portion of the bottom sheet 104.

  At this time, a printing region 55 is formed on the inner surface of the sachet 50 where the sheet is cut by the sheet cutting blade 191. The melting temperature of the medium is higher than the melting temperature of the sheet 101 and the sachet 50. The temperature of the sheet fusing blade 191 is set higher than the melting temperature of the sheet 101 and the sachet 50 and lower than the melting temperature of the medium. For this reason, when the sheet fusing blade 191 is pressed against the cradle, the sheet 101 and the sachet 50 are fused, but the side portions of the fused sachet pieces are not thermally welded. As a result, the side portions of the sachet pieces are separated from each other, and the bottom part of the sachet piece becomes a fold of the sheet 101. Therefore, the two sachet pieces in which the sachet 50 is melted are continuously manufactured. It becomes the side film 14 formed facing the bag 10 and functions as a gusset. Further, the sheet 101 moves by the width of the packaging bag 10 and when the sheet 101 stops, the sheet fusing blade 191 descends again, and the sheet 101 and the pouch 50 are thermally fused. In this way, each time the sheet fusing blade 191 is lowered, the packaging bag 10 is manufactured.

  Since the medium is a thin and transparent ink, even if the medium remains after the manufacturing of the packaging bag 10, it cannot be understood without careful attention. For this reason, the appearance of the packaging bag 10 does not deteriorate. Moreover, since it is not necessary to remove the remaining medium after manufacturing the packaging bag 10, the manufacturing cost of the packaging bag 10 can be suppressed. Moreover, since the header area | region 106 formed in the crease | fold 102 of the sheet | seat 101 is formed by fusing simultaneously with the process of fusing the sheet | seat 101, the packaging bag 10 which has the header part 15 can be manufactured with a simple manufacturing method. it can. Furthermore, since the adhesive application part 130 can apply | coat an adhesive continuously to the edge part of the lower surface sheet 104 among the folded sheets 101, the packaging bag 10 in which the adhesion | attachment area | region 13a was formed is easy. Can be manufactured.

  When the sheet 101 and the sachet 50 are fused, the sheet 101 may be blown by applying ultrasonic waves or irradiating laser light instead of thermally cutting the sheet 101 by the sheet cutting blade 191. In the above description, the header region 106 is formed after the adhesive is applied to the end portion of the lower surface sheet 104. However, after the header region 106 is formed, the adhesive is applied to the end portion of the lower surface sheet 104. May be.

<1.3 First Modification>
Fig.7 (a) is a perspective view which shows the folded state of the packaging bag 20 which concerns on the 1st modification of 1st Embodiment, FIG.7 (b) is for packaging shown in Fig.7 (a). It is a perspective view which shows the state which opened the opening part 26 of the bag 20, FIG.7 (c) is a perspective view which shows the state which accommodated the goods in the packaging bag 20 shown to Fig.7 (a). 7A to 7C are diagrams viewed from the bottom side of the packaging bag 20 in order to make the shape of the packaging bag 20 easier to understand, the right side of each figure is the packaging bag 20. The upper part (upper end) may be described, and the left side may be described as the lower part (lower end). Of the components shown in FIGS. 7A to 7C, the components corresponding to those shown in FIGS. 1A to 1C are assigned the corresponding reference numerals. is doing.

  In the packaging bag 20 shown in FIG. 7A, unlike the packaging bag 10 shown in FIG. 1A, the width of the side film 24b formed on the right side surface of the packaging bag 20 is formed on the left side surface. The side film 24a is formed to be wider than the width. Therefore, as shown in FIG. 7B, when the opening 26 of the packaging bag 20 is expanded, the right side of the opening 26 opens wide, but the left side opens only small. However, as shown in FIG. 7 (c), when a product with different left and right thicknesses, such as a binder, is placed in the packaging bag 20, the thicker side is on the right side and the thinner side is on the left side. As a result, it becomes easy to put the product in and out of the packaging bag 20, and when the product with different thicknesses is placed in the packaging bag 20, the product is stored neatly and the product is stored. The appearance of the packaging bag 20 is improved. Similarly to the packaging bag 10, the side portions of the side films 24 a and 24 b are welded to the side portions of the front film 22 and the back film 23 without providing welding margins. It also looks good.

  Next, a method for manufacturing the packaging bag 20 will be described. Since the shape and manufacturing method of the sachet used for manufacturing the packaging bag 20 are the same as those in the first embodiment, description thereof will be omitted. Moreover, the bag making machine for manufacturing the packaging bag 20 includes the same processing unit as the bag making machine 100 shown in FIG. However, the operation of the pouch welded portion 160 is slightly different. Therefore, in the following description, the operation of the small bag welding portion 160 will be mainly described with reference to FIGS. 5 and 6 used in the description of the first embodiment.

  In the first embodiment, the cassette 161 is attached to the bag making machine 100 so that the center line in the radial direction of the suction plate 163 and the center line of the small bag 50 overlap in plan view. However, in this modification, the cassette 161 is attached so that the center line of the pouch 50 is shifted downward with respect to the center line of the suction plate 163. As a result, the sachet 50 is sucked from the cassette 161 to the suction plate 163 in a state of being shifted downward with respect to the center line of the suction plate 163. The pouch 50 adsorbed on the adsorbing plate 163 while being shifted downward is rotated by the turntable 162, and the pouch 50 is perpendicular to the longitudinal direction of the sheet 101 between the upper sheet 103 and the lower sheet 104. It stops at the position where it becomes, and is welded to the sheet 101. In this case, the pouch 50 is welded by stopping at a position shifted to the right side as compared with the case of the first embodiment.

  Thus, by fusing the sheet 101 welded at the position where the position of the pouch 50 is shifted to the right side with the sheet fusing blade 191, the pouch 50 is formed into a pouch piece having a wide right side and a narrow left side. Divided. As a result, as shown in FIG. 7B, a packaging bag 20 is manufactured in which the width of the right side film 24b is wider than the width of the left side film 24a. In addition, in the small bag 50 used for manufacture of the packaging bag 20, the printing area | region 55 with which the medium was printed is formed in the right side rather than the centerline of the small bag 50 so that it may match with the position to heat-sever.

  Instead of shifting the position where the pouch 50 is welded to the right, the position where the sheet 101 is thermally fused may be shifted to the right by shifting the attachment position of the sheet cutting blade 191 to the left. Moreover, in the said modification, although the position which welds the pouch 50 to the sheet | seat 101 was shifted to the right compared with the case of 1st Embodiment, you may shift to the left side. In this case, a packaging bag is produced in which the left side of the opening 26 opens greatly, but the right side opens only slightly.

<1.4 Second Modification>
FIG. 8A is a perspective view showing a folded state of the packaging bag 30 according to the second modification of the first embodiment, and FIG. 8B is the packaging product shown in FIG. 8A. 3 is a perspective view showing a state when a product is put in a bag 30. FIG. 8A and 8B are views seen from the bottom side of the packaging bag 30 in order to make the shape of the packaging bag 30 easier to understand. The upper part (upper end) may be described, and the left side may be described as the lower part (lower end). Of the components shown in FIGS. 8A and 8B, the components corresponding to those shown in FIGS. 1A to 1C are assigned the corresponding reference numerals. is doing.

  As shown in FIG. 8A, the packaging bag 30 includes a header portion 35 and a bag body 37, and the bag body 37 has an elongated shape formed along the left and right side portions thereof. Side bag 38 is formed. The depth of the side bag 38 is substantially the same as the depth of the bag main body 37, and the opening of the side bag 38 is provided in the lower part of the packaging bag 30, similarly to the opening 36 of the bag main body 37.

  Therefore, as shown in FIG. 8B, a thick product such as a lunch box 39a is placed in the bag body 37 of the packaging bag 30, and the chopsticks 39b and the other side are placed in one side bag 38. Since the bags 38 can be filled with elongated products such as spoons 39c, the products can be easily viewed when displayed on the display shelf. Further, unlike the case of the packaging bag 10, the side portions of the melted sachet pieces are not welded to the side portions of the front film 32 and the back film 33 without providing welding margins. The sides are also welded together. However, like the packaging bag 10, the appearance of the packaging bag 30 is improved.

  Next, a method for manufacturing the packaging bag 30 will be described. The shape of the sachet used for manufacturing the packaging bag 30 is the same as the shape of the sachet 50 shown in FIG. However, unlike the pouch 50, no medium is printed on the inner surfaces of the front film 51 and the back film 52 of the pouch. For this reason, the manufacturing method of a small bag differs from the manufacturing method of the small bag 50 by the point which uses the sheet | seat on which a medium is not printed. However, since the other steps are the same as the method for manufacturing the pouch 50 described in the first embodiment, the description thereof is omitted. Moreover, since the bag making machine for manufacturing a small bag is the same as the bag making machine 70 shown in FIG. 4, the description is abbreviate | omitted. In the following description, the same reference sign “50” is also given to the sachet used for manufacturing the packaging bag 30.

  The bag making machine for manufacturing the packaging bag 30 includes the same processing unit as the bag making machine 100 shown in FIGS. 5 and 6. Therefore, in the following description, the operations of the sachet welding portion 160 and the sheet fusing portion 190 will be mainly described with reference to FIGS. 5 and 6 used in the description of the first embodiment. As described above, no medium is printed on the inner surface of the sachet 50 used for manufacturing the packaging bag 30. Therefore, the suction plate 163 of the sachet welded portion 160 is formed by vacuum-sucking the sachets 50 one by one from the cassette 161 in which the sachets 50 with no medium printed on the inner surface are stored. Transport in between. The sachet 50 transferred between the two folded sheets 101 is welded to the sheet 101 by the sachet welding blade 165.

  When the sheet 101 to which the pouch 50 is welded is fused with the sheet fusing blade 191, unlike the case of the first embodiment, the two pouch pieces to which the pouch 50 has been fused are thermally welded on the flanked side portions. As a result, the side bags 38 and the side portions of the upper sheet 103 and the lower sheet 104 are integrally heat welded. As a result, side bags 38 are formed in the packaging bag 30 along with the bag body 37 along the left and right side surfaces. In this case, the side film which functions as a gusset is not formed in the packaging bag 30.

  In the above description, the side bag 38 is formed on the left and right side surfaces of the bag body 37 in the packaging bag 30, but the side bag 38 is formed on either the left or right side surface of the bag body 37. However, the other side surface may be a packaging bag in which a side film functioning as a gusset is formed by using a small bag 50 having a medium printed on the inner surface. In such a packaging bag, since the opening on the side where the gusset is formed opens widely, for example, a product with different thicknesses such as a system notebook is placed, and a side product 38 is placed with a slender product such as a pen. can do. In this case, the pouches 50 having the medium printed on the inner surface thereof and the pouches 50 not printing the medium may be alternately stacked in the cassette 161 of the bag making machine 100.

<2. Second Embodiment>
<2.1 Structure of packaging bag>
Fig.9 (a) is a perspective view which shows the folded state of the packaging bag 40 which concerns on the 2nd Embodiment of this invention, FIG.9 (b) is the packaging bag 40 shown to Fig.9 (a). It is a perspective view which shows the state which expanded the opening part 46, FIG.9 (c) is a perspective view which shows a state when goods are put in the packaging bag 40 shown to Fig.9 (a). 9A to 9C are views seen from the bottom side of the packaging bag 40 in order to make the shape of the packaging bag 40 easy to understand. May be described as the upper part (upper end) and the left side as the lower part (bottom face). Of the components shown in FIGS. 9A to 9C, the components corresponding to the components shown in FIGS. 1A to 1C are assigned the corresponding reference numerals. is doing.

  As shown in FIG. 9A, the packaging bag 40 is formed of a front film 42, a back film 43, a side portion of the front film 42, and a side portion of the back film 43. And a side film 44 functioning as The front film 42 and the back film 43 are formed by bending a single sheet, and the front film 42, the side film 44, and the back film 43 are melted obliquely on both sides of the lower portion of the packaging bag 40. It is welded. For this reason, as shown in FIG.9 (b), when the opening part 46 is expanded, it becomes a structure (ship bottom structure) where the bottom face of the packaging bag 40 spreads sufficiently. In such a packaging bag 40, the shape of the packaging bag 40 is not deformed even when a thick product is inserted, and the appearance of the packaging bag 40 when the product is inserted is improved. Further, when a product is put into the packaging bag 40, the bottom surface of the packaging bag 40 expands, so that the packaging bag 40 containing the product can stand on the table.

  In addition, at the left and right side portions of the packaging bag 40, there is no welding margin between the side film 44 and the front film 42 or the back film 43 due to thermal fusing. Further, since the front film 42 and the back film 43 are formed by bending one film, there is no margin for welding on the bottom surface of the packaging bag 40. For this reason, the appearance of the packaging bag 40 is also improved.

  The opening 46 of the packaging bag 40 is provided at the top, and an elliptical hand hole (not shown) is formed at the top of the back film 43. Therefore, as shown in FIG. 9 (c), after putting the product, the release material (not shown) attached to the adhesive region 43a of the back film 43 is peeled off so as to cover the opening 46, and the front film is removed. If affixed to 42, the product can be easily carried by putting a finger into the hand hole.

<2.2 Manufacturing method of packaging bag>
Since the configuration of the sachet used to form the side film 44 of the packaging bag 40 according to this embodiment and the manufacturing method thereof are the same as the configuration of the sachet 50 described in the first embodiment and the manufacturing method thereof, The description is omitted.

  FIG. 10 is a perspective view showing a configuration of a bag making machine 200 used for manufacturing the packaging bag 40 according to the present embodiment. As shown in FIG. 10, the bag making machine 200 includes, in order from the left, an original fabric supply unit 110, a sheet bending unit 120, an adhesive application unit 130, a dance roll unit 150, a small bag welding unit 160, a V-shaped fusing unit 270, Each processing part of the handbag hole forming part 280 and the sheet fusing part 190 is included.

  Unlike the packaging bag 10 shown in FIG. 1 (a), the packaging bag 40 does not have the header portion 15 and is provided with a hand hole 45a instead of the through hole 15a. Furthermore, in order to make the bottom face of the packaging bag 40 into a ship bottom structure, the lower part is melted obliquely. For this reason, in the bag making machine 200, unlike the bag making machine 100 shown in FIG. 5 described in the first embodiment, the header forming unit 140 is not provided, and instead of the through hole forming unit 180. A hand hole forming portion 280 is provided. Furthermore, a V-shaped fusing part 270 is provided between the sachet welding part 160 and the handbag hole forming part 280. Since the other processing units included in the bag making machine 200 are the same as the processing units included in the bag making machine 100, the processing units of the bag making machine 200 are the same as the processing units of the bag making machine 100. The processing unit will be briefly described with the same reference numerals as those attached to the bag making machine 100, and different processing units will be mainly described.

  Since the packaging bag 40 is not provided with the header portion 15, an adhesive application region 105 is formed at the end of the lower surface sheet 104 in the same manner as the packaging bag 10, and a release material (not shown) is provided. The attached sheet 101 moves to the pouch welding part 160 through the dance roll part 150. In the pouch welding section 160, the pouch 50 is thermally welded by a pouch welding blade 165 heated to a predetermined temperature while being sandwiched between the upper sheet 103 and the lower sheet 104 along the fold 102 of the sheet 101.

  V-shaped fusing part 270 includes a V-shaped V-shaped blade 271 heated to a predetermined temperature and a cradle (not shown). When the sheet 101 to which the pouch 50 is welded moves to the V-shaped fusing part 270 and stops, the V-shaped blade 271 descends from above. The shape of the V-shaped blade 271 is a blade having a shape that expands in a V-shape from a position on a fusing line to be blown by a sheet fusing portion 190 described later toward the fold line 102 of the sheet 101. The V-shaped blade 271 is pressed against the cradle in order to thermally melt the lower side portions of the top sheet 103, the pouch 50, and the bottom sheet 104. As a result, at the position where the V-shaped blade 271 is pressed, one side of the pouch 50 and the side of the top sheet 103 are welded, and the other side of the pouch 50 and the side of the bottom sheet 104 are welded. Is welded. At this time, since the medium is printed wider than the width of the V-shaped blade 271 at the central portion of the inner surface of the pouch 50, the one side portion and the other side portion of the pouch 50 are thermally welded to each other. It is separated. As a result, the bottom surface of the packaging bag 40 called the ship bottom structure is formed. In this case, by using the V-shaped blade 271, it is possible to simultaneously form an oblique fusing of the lower right portion of one packaging bag 40 and an oblique fusing of the lower left portion of the packaging bag 40 adjacent to the left. The manufacturing process of the bag 40 can be simplified.

  The hand hole forming portion 280 includes an opening blade 281 having the same size as the hand hole 45a having a substantially elliptical shape. When the sheet 101 melted in the V shape moves to the position of the hand hole forming portion 280 and stops, the opening blade 281 descends from above and is pressed against the lower portion of the sheet 101, thereby forming the hand hole 45a. .

  The sheet fusing part 190 includes a sheet fusing blade 191 having the same shape as the sheet fusing part 190 of the bag making machine 100. The sheet 101 on which the V shape is formed stops at a position where the apex of the V shape is directly below the sheet fusing blade 191. For this reason, if the sheet cutting blade 191 is lowered and pressed against a cradle (not shown), the sheet 101 is thermally melted, and the side portion of the sheet 101 and the pouch 50 that is not melted by the V-shaped blade 271 is V Fusing is performed in a direction perpendicular to the longitudinal direction of the sheet 101 from the apex of the character shape. At this time, one side portion of one of the sachet pieces melted into two and the side portion of the front film 42 are welded, and the other side portion of the sachet piece and the back film 43 The side part is welded. In this way, the sachet was cut in two portions by the V-shaped blade 271 and the sheet fusing blade 191 so that the bottom surface became a ship bottom structure, and the side film 44 functioning as a gusset was provided on the side surface. A packaging bag 40 is manufactured.

  Note that the V-shaped fusing part 270 and the hand hole forming part 280 may be reversed in order to form the hand hole 45a, and then the V-shaped fusing may be performed. Further, when the sheet 101 and the sachet 50 are melted, the sheet 101 may be melted by applying ultrasonic waves or irradiating a laser beam instead of thermally melting. Moreover, the bag making machine 200 can manufacture the packaging bag 40 instead of the packaging bags 10 to 30 only by changing a part of the processing unit included in the bag making machine 100. For this reason, when not only the packaging bags 10 to 30 but also the packaging bag 40 is manufactured, it is only necessary to introduce either the bag making machine 100 or the bag making machine 200 and replace only the necessary processing unit. Good. For this reason, the introduction cost of a bag making machine can be significantly reduced.

<2.3 Modification>
Further, instead of providing the V-shaped fusing part 270, if the sheet fusing blade 191 of the sheet fusing part 190 is replaced with a blade having a shape capable of performing V-shaped fusing and sheet fusing at the same time, the bottom surface can be obtained by one fusing. Since the ship bottom structure and the side film on the side can be formed simultaneously, the manufacturing process of the packaging bag 40 can be simplified.

  Moreover, it is good also as a packaging bag which melt | fused the upper surface sheet 103, the lower surface sheet 104, and the small bag 50 linearly, without melt | disconnecting the lower part of the packaging bag 40 diagonally. In this case, the bottom portion of the packaging bag does not have a ship bottom structure, and the shape of the bottom portion of the packaging bag when a product is put is the same as the shape of the packaging bag 10 shown in FIG. For this reason, if the product is not so thick, it can be stored in a packaging bag with good appearance.

  Further, in the same manner as in the case of the first modification of the first embodiment, by changing the left and right widths of the left and right side films of the packaging bag, a packaging bag having different opening methods on the left and right is obtained. Can be manufactured. Further, in the same manner as in the second modification of the first embodiment, by using a sachet on which the medium is not printed on the inner surface, along the side portion of the packaging bag, the side A bag can be formed.

<3. Other variations>
In each of the above embodiments and the modifications thereof, the medium is printed on the inner surface of the pouch 50 so that the end portion of the pouch piece that is formed when melted is not welded. However, instead of the medium, a printing ink having a melting temperature higher than that of the synthetic resin that is the material of the sachet may be printed by intaglio printing. In this case, the printing ink is printed on the surface of the sheet by intaglio printing as in the case of the medium. Alternatively, the substance that can be used in place of the medium may be a substance having a melting temperature higher than that of the synthetic resin used for manufacturing the sachet 50, and such a substance may be printed or sprayed on the sheet. You may apply to 60.

  Further, since the sachet 50 is manufactured by folding one film into two, the opening is provided only on one end side of the sachet. However, you may use the small bag by which the opening part was formed in the both ends by stacking and fusing two sheets. In this case, of the opening portions of the pouch, the opening portion on the side to be welded to the sheet is closed when it is welded by the pouch cutting blade. For this reason, even if a sachet is melted at the sheet fusing portion to form a packaging bag, no hole is formed on the side surface or a hole is formed on the bottom of the side bag.

  The synthetic resin sheets constituting the packaging bags 10 to 40 and the sachets 50 include, for example, a sheet obtained by laminating unstretched polypropylene (CPP) on the surface of biaxially stretched polypropylene (OPP), a sheet only of OPP, or a sheet only of CPP. Etc. are included.

10, 20, 30, 40 ... packaging bag 11, 21, 31, 41 ... crease 12, 22, 32, 42 ... front film 13, 23, 33, 43 ... back film 14, 24, 44 ... side film 15, 25, 35 ... header portion 16, 26, 36, 46 ... opening 37 ... bag body 38 ... side bag 50 ... sachet 55 ... printing area 130 ... adhesive application portion 160 ... sachet welding portion 162 ... turntable 163 ... suction plate 165 ... Small bag welding blade 191 ... Sheet fusing blade 271 ... V-shaped blade

Claims (12)

A method of manufacturing a packaging bag for storing goods,
Forming a fold to fold a sheet of synthetic resin in the longitudinal direction into a first sheet and a second sheet;
A step of inserting a sachet between the first sheet and the second sheet using a turntable in which a plurality of suction plates provided with a plurality of suction cups are radially attached;
Welding the bottom of the inserted pouch to the sheet;
A sheet fusing step of fusing the sheet containing the sachet in a direction orthogonal to the longitudinal direction of the sheet,
The step of inserting the pouch includes
Supplying the sachet on the suction plate;
Adsorbing the sachet on the adsorption plate;
By rotating the turntable by a predetermined angle, the bottom portion of the sachet is sandwiched between the first sheet and the second sheet, and the side portion of the sachet is the first sheet and Inserting the sachet sucked by the suction plate between the first sheet and the second sheet so as to be orthogonal to the longitudinal direction of the second sheet. The manufacturing method of the packaging bag. The manufacturing method of the packaging bag according to claim 1 , wherein the sachet is coated with a substance having a melting temperature higher than that of the synthetic resin on an inner surface at a position to be blown in the sheet fusing step. Method. The method for manufacturing a packaging bag according to claim 2 , wherein the substance having a high melting temperature is medium. The step of inserting the sachet inserts the sachet so that a center line of the sachet coincides with a fusing line to melt the sheet,
The sheet fusing step is characterized by blowing said sheet comprising said pouch along said fusing wire, a manufacturing method of the packaging bag according to claim 1. The step of inserting the sachet inserts the sachet by shifting the center line of the sachet by a desired distance in the longitudinal direction of the sheet from the fusing line where the sheet is to be fused,
The sheet fusing step is characterized by blowing said sheet comprising said pouch along said fusing wire, a manufacturing method of the packaging bag according to claim 1. After the step of welding the sachet to the sheet, and before the sheet fusing step, the sheet is opened from the position away from the fold by a predetermined distance along the fusing line to be cut from the fold toward the crease. The method for manufacturing a packaging bag according to claim 2 , wherein the sheet including the sachet is cut in a V shape. Encapsulating a tape-like member thicker than the sheet between the first sheet and the second sheet along the crease;
The said sheet fusing process forms a header part by fusing the said tape-shaped member enclosed with the said 1st and 2nd sheet | seat, For packaging of Claim 1 or 2 characterized by the above-mentioned. Bag manufacturing method. A bag making machine for producing a packaging bag comprising a front film and a back film having the same width, and first and second side films respectively disposed between the sides of the front film and the back film. Because
A first sheet folding portion that folds a sheet of synthetic resin to form a fold;
A sachet welded portion for inserting and welding a sachet between the folded sheets;
A sheet fusing part for fusing the sheet containing the sachet in a direction perpendicular to the longitudinal direction of the sheet;
The sachet weld is
A plurality of suction plates with a plurality of suction cups provided on the surface are attached radially, and after the sachet is adsorbed to the suction plate, the bottom portion of the sachet is sandwiched between the folded sheets, and the sachet A turntable for inserting the sachet between the folded sheets by rotating until the side part is perpendicular to the longitudinal direction of the sheet;
A bag making machine comprising: a sachet welding blade for welding the sachet inserted between the folded sheets to the sheet. Wherein said further comprising a header forming portion for forming a header area by along the fold to enclose the tape-shaped member thicker than the sheet between the two-folded with said sheet, according to claim 8 Bag making machine. A V-shaped fusing part having a V-shaped blade for cutting the sheet including the sachet V-shaped from the position on the fusing line where the sheet is to be fused between the sachet welding part and the sheet fusing part. The bag making machine according to claim 8 , further comprising: The sachet welding part further includes a cassette for stacking and storing a plurality of the sachets,
The bag making machine according to claim 8 , wherein the suction plate sucks the sachet from the lower surface of the cassette by the plurality of suction cups when moved directly below the cassette. A dance roll section for forming a first region for moving the sheet at a constant speed and a second region for moving the sheet intermittently;
An adhesive application unit that is provided in the first region and applies an adhesive on the sheet;
The first sheet folding part includes a second sheet folding part for folding the sheet in half so that a second sheet having a width smaller than that of the first sheet overlaps the upper surface of the first sheet,
The bag making machine according to claim 8, wherein the adhesive application unit continuously applies the adhesive to an end portion of the first sheet that is not covered with the second sheet. .

Images