JP2017165447A - Film packaging bag and manufacturing method and manufacturing device of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate sterilization of a plug by chemicals.SOLUTION: A manufacturing device of a film packaging bag comprises: a bag making device for forming a belt-like continuous film 21 which has been sterilized in advance into a cylindrical shape; a vertical seal device for forming a first vertical seal part 71 and an inner seal part 12a on the continuous film 21; a filling device for filling a bag with a content; a lateral seal device; and a plug fitting device for fitting a plug 3 to an outside portion 73 of the inner seal part 12a of the continuous film 21. The first inner seal part 12a has higher detachability than the other seal part, and the plug fitting device is located outside an aseptic zone.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a film packaging bag filled with contents such as a liquid, a manufacturing method thereof, and a manufacturing apparatus.

  Film wrapping bags filled with beverages and nutritional foods and with stoppers are known. By providing the plug, the contents can be taken out little by little, and the convenience for the user is improved. In a film packaging bag with a plug, the contents always come into contact with the inner part of the film packaging bag of the plug. During storage of the film packaging bag, the bacteria attached to the stopper may come into contact with the contents and cause sanitary problems. For this reason, as described in Patent Document 1, in the manufacturing process of the film packaging bag, the film to which the cap is attached is sterilized or sterilized (hereinafter referred to as sterilization) by the drug. The drug attached to the film and the plug is removed by a drying device. The film is then formed into a bag, filled with the contents and sealed.

  Patent Document 2 discloses a film packaging bag having a fusion part that can be easily peeled off. The bag body is divided into a space filled with the contents and a space connected to the spigot by the fusion part. The contact between the contents and the plug is prevented by the fused part during storage, and the contents can be taken out from the plug by peeling the fused part during use.

JP 2013-116748 A Japanese Patent Laid-Open No. 2003-118745

  The film packaging bag disclosed in Patent Document 2 can be manufactured by the method described in Patent Document 1. However, the spigot generally has a complicated shape and may not be sufficiently sterilized. Moreover, when removing the chemical | medical agent adhering to a stopper, many processes and facilities are required for the complicated shape of a stopper.

  An object of this invention is to provide the manufacturing method and manufacturing apparatus of a film packaging bag, and a film packaging bag which do not require the sterilization of a plug by a medicine.

  The apparatus for manufacturing a film packaging bag of the present invention forms a first flank by forming a band-shaped film sterilized in advance into a cylindrical shape and overlapping side edges on both sides of the film, A bag-making apparatus that superimposes the same surfaces of the film in an inner region located on the inner side of the side edge, and a pair of first vertical members that are positioned apart from each other in the longitudinal direction of the film on the first side of the film A vertical seal device that forms a seal portion and forms a first inner seal portion continuous with the pair of first vertical seal portions in a portion between the pair of first vertical seal portions in the inner region; A filling device for filling the contents from the upper opening of the film-like film, a horizontal sealing device for forming a horizontal sealing portion extending in the width direction of the film, and a first side of the film located outside the inner region Attach a plug to the outer part and It has a spout attaching apparatus for forming a second vertical seal portion, to part. The first vertical seal portion and the second vertical seal portion form a continuous vertical seal portion that extends continuously along the first side, and the first inner seal portion is formed from the continuous vertical seal portion and the horizontal seal portion. High peelability. The bag making device and the vertical seal device are located inside the sterilization zone, and the spigot attachment device is located outside the sterility zone.

  The method for producing a film packaging bag of the present invention is a method of forming a first flank by forming a band-shaped film sterilized in advance into a cylindrical shape, and overlapping side edges on both sides of the film. A bag-making process in which the same surfaces of the film are overlapped with each other in an inner region located on the inner side of the side edge, and a pair of first vertical positions that are positioned apart from each other in the longitudinal direction of the film on the first side of the film A vertical seal forming step of forming a seal portion and forming a first inner seal portion continuous with the pair of first vertical seal portions in a portion between the pair of first vertical seal portions in the inner region; Forming a first lateral seal portion extending in the width direction of the film; filling a content from an upper opening of a tubular film whose bottom is closed by the first lateral seal portion; and first film The outer part of the side of the side located outside the inner area At the same time as attaching the plug, forming a second vertical seal portion on the outer portion, and forming a second horizontal seal portion extending in the width direction and sealing the contents above the first horizontal seal portion of the film And a step of performing. The first vertical seal portion and the second vertical seal portion form a continuous vertical seal portion that extends continuously along the first side, and the first inner seal portion is formed from the continuous vertical seal portion and the horizontal seal portion. High peelability. The bag making process and the vertical seal forming process are performed inside the sterilization zone, and the process of attaching the plug is performed outside the sterilization zone.

  According to these manufacturing apparatuses and manufacturing methods, the continuous film is continuously sealed in the vertical direction by the first vertical seal portion and the first inner seal portion. By these seal portions, the packaging bag is divided into a space in which the contents are filled and a space in which the contents are not filled and a plug is attached. Since the plug is separated from the contents, no sanitary problem arises even if bacteria are attached to the plug. This is because bacteria are easy to propagate in an environment where the contents are present, but are difficult to propagate in an atmosphere isolated from the contents. Therefore, according to this manufacturing apparatus and manufacturing method, the plug can be attached to the continuous film outside the aseptic zone, and equipment and processes for sterilizing the plug and the chemical solution used for sterilization are removed. Equipment and processes become unnecessary. Moreover, since the 1st inner side seal part has higher peelability than another seal part, it can peel easily at the time of use, and can take out the content from a stopper.

  The film packaging bag of the present invention has a bag main body and a cap attached to the bag main body, and the bag main body is formed by a peelable first inner seal portion that seals mutually facing inner surfaces of the bag main body. , A space filled with the contents and a space connected to the spigot. The first inner seal portion is formed along a continuous line having a start point and an end point at the seal portion of the outer edge portion of the bag body and having at least one bent portion in the inner region of the outer edge portion.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method and manufacturing apparatus of a film packaging bag which do not require sterilization by the medicine of a stopper can be provided.

It is an external view of the film packaging bag which concerns on one Embodiment of this invention. It is an external view of the cap of the film packaging bag shown in FIG. It is a block diagram of the manufacturing apparatus of the film packaging bag which concerns on one Embodiment of this invention. It is a flowchart of the manufacturing method of the film packaging bag which concerns on one Embodiment of this invention. It is a top view which shows the attachment position of a pull tab. It is an external view of a bag making guide. It is a figure explaining the process after the formation process of a vertical seal part.

  First, the structure of the film packaging bag which concerns on one Embodiment of this invention is demonstrated. Referring to FIG. 1 (a), a film packaging bag 1 has a bag body 2 made of a film and a plug 3 attached to the bag body 2. As will be described later, the bag body 2 is sterilized with a chemical such as an aqueous hydrogen peroxide solution on the inner surface and the outer surface, but the plug 3 is not sterilized with the chemical. The bag body 2 is filled with contents such as beverages and nutritional foods. The contents can take various forms such as liquids, sols, gels and the like. The bag body 2 is formed from a resin material such as polyethylene or polypropylene. The bag body 2 has a substantially square shape and has four sides or outer edge portions 11. Here, from the posture of the bag body 2 in the step of filling the contents, the outer edge portion 11 is divided into first and second side edges 11a and 11b extending in the vertical direction, and horizontally extending upper side 11c and lower side 11d. To do. The contents are input from the upper side 11c. A plug 3 is attached to the first side 11a. The second side 11b is gusset-folded. The film packaging bag 1 can be made independent by placing the film packaging bag 1 with the second side 11b facing down. A vertical seal portion (continuous vertical seal portion) 18a, a first horizontal seal portion 18c, and a second horizontal seal portion 18d are formed on the first side 11a, the upper side 11c, and the lower side 11d, respectively. Since the second side 11b is formed by bending a continuous film at the time of manufacture, it is not always necessary to form a seal portion. In the present embodiment, a vertical seal portion 18b for gusset folding is formed.

  The inside of the bag body 2 is divided into a first space 13 filled with the contents and a second space 14 connected to the plug 3 by a first V-shaped inner seal portion 12a. Has been. The first inner seal portion 12a has a start point and an end point in the vertical seal portion 18a of the first side 11a, and a bent portion 16 in a region inside the first side 11a (hereinafter referred to as an inner region 15). Are formed continuously along the first line 17a. In the present embodiment, the bent portion 16 is a corner portion. The shape of the first inner seal portion 12a to the first line 17a is not limited to this, and may be, for example, a W shape having two corner portions or a curved shape. The first inner seal portion 12a may have a start point or an end point in the seal portion of the outer edge portion 11 other than the first side 11a, and a plurality of bent portions 16 may be provided. In other words, the first inner seal portion 12 a only needs to be formed along the first line 17 a having at least one bent portion 16 in the inner region 15.

  The first inner seal portion 12a is formed by a peelable seal portion that joins mutually opposing inner surfaces of the bag body 2. Here, “peelable” means a peel strength that can be peeled off by a normal adult force, and is preferably in the range of 4.9 to 11.8 N / 15 mm as measured according to JISZ0238. The peel strength of the seal portion of the outer edge portion 11 is greater than the peel strength of the first inner seal portion 12a, and is desirably 12 N / 15 mm or more as measured by JISZ0238.

  A pair of gripping portions 19 are provided at positions facing each other on the outer surfaces of both sides of the bag body 2. The grip portion 19 is a pull tab, but may be a ring, string, or the like that can be inserted with a finger. The grip portion 19 is attached to a portion of the outer surface of the bag body 2 facing the first space 13 by welding or adhesion. The grip portion 19 is preferably in the vicinity of the bent portion 16, particularly preferably a small distance from the V-shaped apex of the first inner seal portion 12a in a direction parallel to the upper side 11c or the lower side 11d (for example, 2 to the center of the pull tab). (About 3 cm).

  The film packaging bag 1 filled with the contents is separated into a first space 13 and a second space 14 by a first inner seal portion 12a during storage and transportation. In use, both pull tabs are held in their respective hands, and a force is applied in a direction in which the opposing inner surfaces of the bag body 2 are separated from each other. Accordingly, the first inner seal portion 12a can be easily peeled off. In particular, in the present embodiment, the first inner seal portion 12 a has the bent portion 16 and the pull tab is in the vicinity of the bent portion 16, so that the applied force is first concentrated on the bent portion 16. As a result, peeling of the first inner seal portion 12a starts from the bent portion 16, and as the force is further applied, peeling progresses in a direction away from the V-shaped apex along the lines on both sides of the V-shape. In this way, the first inner seal portion 12a can be easily peeled along the V shape.

  The inner seal portion may be provided in a double or multiple manner. That is, the second inner seal portion 12b can be provided as shown in FIG. The second inner seal portion 12b has a start point and an end point at the vertical seal portion 18a of the first side 11a, translates along the first line 17a, and preferably along the second line 17b extending in parallel. It is formed continuously. Thereby, even if the first inner seal portion 12a has a sealing failure, the second inner seal portion 12b can prevent the first space 13 and the second space 14 from communicating with each other.

  FIG. 2 shows an external view of the plug 3. 2 (a) is a front view, FIG. 2 (b) is a side view as seen from the base, FIG. 2 (c) is a side view as seen from the cap main body, FIG. 2 (d) is a bottom view, and FIG. ), (C), and (d) are views seen from the B, C, and D directions in FIG. The plug 3 includes a cap main body portion 31, a base portion 32, and an opening portion 33. A channel 34 through which the contents flow passes through each of the cap main body 31 and the base 32. The base 32 is sandwiched between the two surfaces of the film packaging bag 1 and is fixed to the bag body 2. The opening part 33 is screwed to the cap body part 31. By rotating the opening part 33 with respect to the cap body part 31, the opening part 33 can be removed from the cap body part 31 and the contents filled in the bag body 2 can be taken out. As will be described later, the plug 3 of this embodiment does not need to be sterilized with a chemical such as an aqueous hydrogen peroxide solution as in the prior art. For this reason, it is not necessary to make the shape in which the medicine can easily reach the back of the flow path 34 or to make the medicine easy to remove, and the degree of freedom in shape and configuration is high.

  Next, with reference to FIG.3, 4, the manufacturing apparatus and manufacturing method of the film packaging bag demonstrated above are demonstrated. FIG. 3 shows the configuration of the film packaging bag manufacturing apparatus, and FIG. 4 shows the flow of the film packaging bag manufacturing method. The film packaging bag manufacturing apparatus 4 includes a continuous film supply apparatus 41, an accumulation mechanism 42, a pull tab attachment apparatus 43, a sterilization apparatus 44, a drying apparatus 45, a bag making and filling apparatus 46, and a vertical sealing apparatus 47. The plug mounting device 48, the gusset folding device 49, the squeeze roller 50, the lateral seal device 51, and the cutter device 52 are provided. A plurality of rollers are provided between the continuous film supply device 41 and the bag making and filling device 46, and the long continuous film 21 can be continuously conveyed in the conveyance direction F. The continuous film supply device 41, the accumulating mechanism 42, the pull tab attaching device 43, the plug attaching device 48, the gusset folding device 49, the squeeze roller 50, the lateral sealing device 51, and the cutter device 52 are in the aseptic zone 5. Outside. The sterilization device 44, the drying device 45, the bag making and filling device 46, and the vertical sealing device 47 are inside the sterilization zone 5. The sterilization zone 5 is set to a positive pressure with respect to the outside of the sterilization zone 5 in order to prevent bacteria from entering from the outside. Hereinafter, these apparatuses will be described together with the manufacturing flow.

  The continuous film supply device 41 includes first and second continuous film mounting portions 411 and 412 each loaded with a roll of continuous belt-like film 21, and a continuous film switching mechanism 413. The continuous film supply device 41 feeds out the continuous film 21 loaded in the first continuous film mounting unit 411 (step S1). The continuous film 21 loaded in the second continuous film mounting unit 412 is in a standby state. When the first continuous film 21 is consumed and the end of the continuous film 21 approaches, the continuous film switching mechanism 413 switches to the second continuous film mounting unit 412. Therefore, the continuous film supply device 41 can continuously supply the continuous film 21 without stopping the operation of each device in the subsequent stage.

  The accumulation mechanism 42 includes a swingable lever 421, a plurality of guide rollers 422 fixed to the frame of the manufacturing apparatus 4, and a plurality of accumulation rollers 423 supported by the lever 421. By alternately winding the continuous film 21 around the guide roller 422 and the accumulation roller 423, the continuous film 21 is drawn in a meandering manner. The lever 421 is supported so as to be swingable about an axis, and the path length of the continuous film 21 is changed by swinging the lever 421. As a result, even when the continuous film supply device 41 is stopped, the continuous film 21 stored in the accumulation mechanism 42 can be sent out, and the continuous film 21 can be supplied to the pull-tab attachment device 43 at the subsequent stage.

  The pull tab attaching device 43 (gripping part attaching device) attaches the pull tab 19 to the fed continuous film 21 (step S2). The pull tab attaching device 43 includes a pull tab holding portion 431 that holds the pull tab 19 and presses the pull tab 19 downward, and a pull tab receiving portion 432 positioned below the pull tab holding portion 431. The continuous film 21 can pass between the pull tab holding portion 431 and the pull tab receiving portion 432. The pull tab attaching device 43 grips the pull tab 19 supplied from a supply mechanism (not shown), and sandwiches the continuous film 21 and the pull tab 19 with the pull tab receiving portion 432. As a result, the pair of pull tabs 19 are attached to positions facing each other in the vicinity of the bent portion 16 on the outer surface facing the first space 13 filled with the contents of the continuous film 21. As described above, two pull tabs 19 per one film packaging bag 1 are joined to the continuous film 21. In the present embodiment, four sets of pull tab gripping portions 431 and pull tab receiving portions 432 are provided. For this reason, the pull tab attaching device 43 attaches a total of four pull tabs 19 of the two film packaging bags 1 at the same time as shown in FIG. 5 (a top view of the continuous film 21 seen from the direction AA in FIG. 3). Can do.

  The sterilizer 44 sterilizes the strip-shaped continuous film 21 to which the pull tab 19 is attached before being formed into a bag shape (step S3). The sterilizer 44 has a chamber 441 that forms part of the sterilization zone 5. The chamber 441 has a tank shape, and is filled with a hydrogen peroxide aqueous solution as a sterilizing liquid (medicine), and a roller unit 442 including a lower roller row and an upper roller row is provided. ing. The continuous film 21 is meandered and drawn by alternately winding the continuous film 21 on the lower roller and the upper roller. The continuous film 21 is sterilized while proceeding in a chamber 441 filled with an aqueous hydrogen peroxide solution.

  The drying device 45 includes a scraper 451 and a drying chamber 452 located at the rear stage of the scraper 451 with respect to the film conveyance direction F. The scraper 451 has a pair of blades opposed to each other, and the continuous film 21 passes between the pair of blades. The aqueous hydrogen peroxide solution adhering to both surfaces of the continuous film 21 is wiped off by the blade as it passes between the blades. The drying chamber 452 is a chamber 452 provided with a hot air blowing device. The chamber 452 contains hot air and forms a part of the sterilization zone 5. In the chamber 452, a roller unit 453 including a lower roller row and an upper roller row is provided. The continuous film 21 is meandered and drawn by alternately winding the continuous film 21 on the lower roller and the upper roller. The aqueous hydrogen peroxide solution remaining on both surfaces of the continuous film 21 is removed in the drying chamber 452, and the continuous film 21 is dried (step S4).

  The bag making and filling device 46 includes a bag making device 461 that bends the continuous film 21 into a bag shape, a filling device 462 that fills the inside of the continuous film 21 that is formed into a bag shape, and a vertical seal device 47. And have. The filling device 462 includes a charging pipe 463. The bag making device 461, the portion of the input pipe 463 below the bag making device 461, and the vertical seal device 47 are accommodated in a chamber 464 that constitutes a part of the aseptic zone 5.

  The bag making apparatus 461 folds the previously sterilized belt-like continuous film 21 so that the side edge portions 21a extending in parallel with the film conveying direction F face each other, and forms the bag (step S5). FIG. 6 shows an outline view of the bag making apparatus 461. FIG. 6 (a) is a top view, FIG. 6 (b) is a front view seen from the direction B of FIG. 6 (a), and FIG. It is the side view seen from the C direction of 6 (a). The bag making apparatus 461 has a bag making guide 465 that bends while guiding the continuous film 21. The bottom surface portion 466 of the bag making guide 465 is slightly wider than the width of the continuous film 21 at the entrance portion 467, and the width is narrowed toward the downstream in the film transport direction F and is inclined obliquely downward. Side portions 468 are provided on both sides of the lower surface portion 466. The side surface portion 468 is narrowed toward the downstream side in the film transport direction F and has a high height. The continuous film 21 is fed to the bag making guide 465 with the surface with the pull tab 19 facing downward. The continuous film 21 fed to the bag making guide 465 is bent so that the upper side is opened around the central axis in the film transport direction F while being supported by the lower surface portion 466 and sandwiched between the side surface portions 468 on both sides. Thereby, the side edge portions 21a of the continuous film 21 are overlapped to form the first side edge 11a, and the same surface of the continuous film is overlapped in the inner region of the side edge portion 21a. The continuous film 21 is formed into a cylindrical shape having the surface with the pull tab 19 as an outer surface, passes through the cylindrical hole 469, and is further conveyed downward. Since the continuous film 21 changes the direction of about 90 ° by the bag making device 461, an upper opening 21b having an open top is formed in the vicinity of the outlet of the bag making device 461. The upper opening 21 b is formed inside the cylindrical hole 469. The input pipe 463 extends downward through the inside of the upper opening 21b.

  It is desirable that a pull tab detection sensor (not shown) is installed in the vicinity of the position where the portion of the continuous film 21 with the pull tab 19 passes through the bag making guide 465. For example, a light transmission type sensor can be used as the sensor. In general, when making a bag while sending a transparent or translucent continuous film that transmits light, a registration mark is attached to the continuous film, and the feed amount of the continuous film is controlled based on the registration mark. In the present embodiment, even if a plain continuous film 21 having no characters or marks is used, the continuous film 21 can be accurately detected by detecting the pull tab 19 attached to the continuous film 21 with a sensor instead of the registration mark. Can send. The feed amount of the continuous film 21 in the bag making and filling device 46 can be controlled based on the timing at which the sensor detects the pull tab 19.

  The vertical sealing device 47 joins the first side 11a of the continuous film 21 and the inner region 15 to form the vertical sealing portion 71 (step S6). The vertical sealing device 47 joins the continuous film 21 by the principle of ultrasonic fusion. The vertical sealing device 47 includes a resonance horn and a receiving portion facing the resonance horn, and the continuous film 21 passes between the resonance horn and the receiving portion. The resonant horn is connected to a vibrator that converts high-frequency current from the oscillator into longitudinal vibration. By pressurizing the continuous film 21 between the resonance horn and the cradle and transmitting ultrasonic vibrations to the continuous film 21, local internal heat is generated in the continuous film 21, and the site is bonded instantaneously.

  FIG. 7A shows an enlarged view of the vertical seal portion 71. The vertical seal portion 71 is formed along a continuous line 17 a that partially passes through the first side 11 a and part passes through the inner region 15. That is, the vertical seal portion 71 is composed of a pair of first vertical seal portions 72 and a first inner seal portion 12a located between the pair of first vertical seal portions 72 per film packaging bag. . A pair of 1st vertical seal | sticker part 72 is located mutually apart in the longitudinal direction (film conveyance direction F) of a continuous film along the 1st side 11a of a continuous film. The continuous film 21 is continuously sealed in the vertical direction by the pair of first vertical seal portions 72 and the first inner seal portion 12a. For various shapes that the first inner seal portion 12a can take, refer to the above description. The aforementioned second inner seal portion 12b can be formed simultaneously.

  The first inner seal portion 12 a has a higher peelability than the first vertical seal portion 72. Such a seal part can be created, for example, by making the part forming the inner seal part on the surface of the resonant horn an embossed shape or an uneven shape. Since the pressure applied to the continuous film 21 of the resonant horn is weakened in the embossed or concavo-convex concave portion, a part having a low fusion strength can be formed partially. Or when using heat fusion, shortening the heating time of the site | part used as the 1st inner side seal part 12a of the continuous film 21, or reducing the pressure at the time of heating, a site | part with low fusion strength is used. Can be made. Further, when the second vertical seal portion 74 is formed along the entire length of the first side 11a in the subsequent process, the first vertical seal portion 72 is fused to the same extent as the first inner seal portion 12a. It is also possible to fuse with strength.

  On the downstream side of the vertical sealing device 47, there are a plug attachment device 48 / gusset folding device 49, a vertical conveying mechanism (not shown), a squeeze roller 50, a horizontal sealing device 51, and a cutter device 52. Arranged in order.

  The plug attachment device 48 attaches the plug 3 to the first side 11 a of the continuous film 21. The continuous film 21 is continuously sealed in the vertical direction, but the outer portion of the inner region 15, that is, the portion 73 between the first vertical seal portions 72 along the first side 11a is not joined. . The unjoined portion 73 between the first vertical seal portions 72 is in an open state in which the opposing inner surfaces are not joined. As shown in FIG. 7 (b), the plug attachment device 48 bonds the base 32 of the plug 3 to the inner surface of the continuous film 21 facing the unjoined portion 73 along the first side 11a ( Step S7). The plug 3 is attached so as to protrude from the first side 11a in a direction perpendicular to the first side 11a. The plug 3 is attached to the outside of the inner region 15, that is, the region outside the vertical seal portion 71.

  The plug attachment device 48 is provided with a seal mechanism (not shown). After the plug 3 is attached, the sealing mechanism seals the unjoined portion 73 of the first side 11a to form the second vertical seal portion 74. As a result, the first side 11a of the continuous film 21 is continuously sealed over the entire length by the first vertical seal portion 72 and the second vertical seal portion 74, and a continuous vertical seal portion 18a is formed. The Further, the sealed second space 14 is formed by the already formed first inner seal portion 12a and the newly formed second vertical seal portion 74.

  The step of attaching the plug 3 can be performed outside the aseptic zone 5. This is because, as described above, the vertical seal portion 47 that is continuous in the vertical direction of the continuous film 21 is formed by the vertical seal device 47 in advance. The cylindrical continuous film 21 is joined in the circumferential direction inside the chamber 464 constituting the aseptic zone 5. The continuous film 21 exiting from the chamber 464 is outside the aseptic zone 5, but the lower end of the continuous film 21 is closed by the lower edge 11 d of the lowermost film packaging bag 1. For this reason, the inside of the continuous film 21 becomes a sealed space and constitutes a part of the aseptic zone 5. Of the first side 11 a of the continuous film 21, the outer portion 73 of the first inner seal portion 12 a formed in the inner region 15 becomes the outer region of the sterilization zone 5. For this reason, the plug 3 can be attached outside the aseptic zone 5.

  Bacteria may adhere to the plug 3 attached to the continuous film 21 outside the aseptic zone 5. However, even if bacteria are attached to the plug 3, the possibility that the bacteria will grow is small as long as the plug 3 is in the atmosphere. Further, the contact with the contents of the bacteria attached to the plug 3 is prevented by the vertical seal portion 71 formed continuously in the vertical direction of the continuous film 21 in advance. For this reason, in this embodiment, it is not necessary to sterilize the plug 3 with the medicine and dry and remove the medicine. In addition, in order to reduce bacteria adhering to the plug 3 as much as possible, the plug 3 may be irradiated with UV in advance.

  A gusset folding device 49 is provided on the opposite side of the plug mounting device 48. The gusset folding device 49 performs gusset folding on the second longitudinal edge portion 11b simultaneously with or before or after the attaching process of the plug 3 (step S8).

  The continuous film 21 is further transported downward by a vertical transport mechanism. The vertical conveyance mechanism includes a pair of rollers provided on both sides of the continuous film 21, and conveys the continuous film 21 while sandwiching the first side 11 a and the second side 11 b of the continuous film 21.

  A content discharge port 463a which is a lower end opening of the input pipe 463 is located on the downstream side (lower side) of the vertical seal device 47 and the vertical transport mechanism. As shown in FIG. 7C, the content discharge port 463 a is located above the horizontal sealing device 51. The contents C are filled from the input pipe 463 (step S9). As described above, the lower end of the continuous continuous film 21 that is continuously conveyed is sealed, and the first side 11a and the second side 11b on both sides are also sealed. Accordingly, the contents charged from the charging pipe 463 passing through the upper opening 21 b of the continuous film 21 are held in the bottom region of the continuous film 21. 7C to 7E are views seen from the direction orthogonal to FIGS. 7A and 7B.

  A pair of squeeze rollers 50 is provided below the contents discharge port 463 a of the input pipe 463. The squeeze roller 50 is a rod-like roller having a length capable of pressing the continuous film 21 over its entire width. As shown in FIG. 7D, the continuous film 21 filled with the contents C is further conveyed downward by the vertical conveyance mechanism, and when the top of the filled contents C reaches below the squeeze rollers 50, the squeeze rollers 50 Move toward each other and abut against the continuous film 21. As shown in FIG. 7E, the squeeze roller 50 abuts on the continuous film 21 conveyed downward while rotating, and flattens the continuous film 21 (step S10).

  A horizontal sealing device 51 is provided below the squeeze roller 50. The horizontal sealing device 51 seals the continuous film 21 on the principle of ultrasonic fusion or thermal fusion similar to that of the vertical sealing device 47 (step S11). When the portion flattened by the squeeze roller 50 reaches the side of the horizontal sealing device 51, the horizontal sealing device 51 seals the flattened portion of the continuous film 21 to form a horizontal sealing portion. Thereby, the 1st horizontal seal part 18c of the film packaging bag 1 is formed. Moreover, the 1st space 13 filled with the content and sealed is formed.

  The horizontal seal of the continuous film 21 is cut in the horizontal direction by the cutter device 52 (step S12). Each film packaging bag 1 is obtained by cutting the continuous film 21 at the horizontal seal portion with the blade 521 of the cutter device 52. Since the cutter cuts the vicinity of the center in the vertical direction of the horizontal seal portion, the remaining portion of the upper half of the horizontal seal portion becomes the second horizontal seal portion 18d of the next film packaging bag 1. That is, the horizontal sealing device 51 forms the upper seal portion of one film packaging bag 1 and the lower seal portion of the next film packaging bag 1 at the same time. Therefore, the lower end of the continuous film 21 is always closed, and the internal space of the continuous film 21 is maintained in the sterilization zone 5.

  As mentioned above, although the film packaging bag, its manufacturing apparatus, and the manufacturing method were demonstrated, this invention is not limited to this. For example, the present invention is not limited to a standing bag that can stand by itself. The present invention can also be applied to the manufacture of a three-way seal bag having a seal portion on three sides, a four-way seal bag having a seal portion on four sides on the top, bottom, left and right.

DESCRIPTION OF SYMBOLS 1 Film packaging bag 2 Bag main body 3 Mouth plug 4 Film packaging bag manufacturing apparatus 5 Aseptic zone 11 Outer edge part, 11a 1st side, 11b 2nd side, 11c Upper side 11d Lower side 12a 1st inner seal part, 12b Second inner seal portion 13 First space 14 Second space 15 Inner region 16 Bending portion 18a, 18b Vertical seal portion, 18c First horizontal seal portion, 18d Second horizontal seal portion 19 Holding portion 21 Continuous Film 21a Same side of continuous film is side edge 41 Continuous film supply device 42 Accumulation mechanism 43 Pull tab attachment device 44 Sterilization device 45 Drying device 46 Bag making and filling device, 461 Bag making device, 462 Filling device 47 Vertical seal device 48 Mouthpiece mounting device 49 Gusset folding device 50 Shigoki roller 51 Horizontal seal device 52 Cutter device 7 1 Vertical seal portion 72 A pair of first vertical seal portions

Claims (21)

A band-shaped film sterilized in advance is formed into a cylindrical shape, and side edges on both sides of the film are overlapped to form a first side, and the same sides of the film are connected to the side edges A bag making apparatus for superimposing the inner region located inside the section;
On the first side of the film, a pair of first vertical seal portions that are located apart from each other in the longitudinal direction of the film are formed, and between the pair of first vertical seal portions in the inner region. A vertical seal device for forming a first inner seal portion continuous with the pair of first vertical seal portions in the portion;
A filling device for filling the contents from the upper opening of the tubular film;
A lateral seal device for forming a lateral seal portion extending in the width direction of the film;
A plug attachment device for attaching a plug to an outer portion located outside the inner region of the first side of the film, and forming a second vertical seal portion on the outer portion; And
The first vertical seal portion and the second vertical seal portion form a continuous vertical seal portion that extends continuously along the first side, and the first inner seal portion is the continuous vertical seal portion. And the peelability is higher than the horizontal seal part,
The apparatus for manufacturing a film packaging bag, wherein the bag making device and the vertical seal device are located inside the sterilization zone, and the plug attachment device is located outside the sterility zone.   The apparatus for manufacturing a film packaging bag according to claim 1, wherein the first inner seal portion has a bent portion.   The apparatus for manufacturing a film packaging bag according to claim 2, wherein the bent portion has a corner portion.   The said 1st inner side seal part is a manufacturing apparatus of the film packaging bag of Claim 3 which has V shape.   5. The apparatus according to claim 2, further comprising: a gripping portion attaching device that attaches a pair of gripping portions to positions facing each other in the vicinity of the bent portion on an outer surface facing the space filled with the contents of the film. The manufacturing apparatus of the film packaging bag as described in a term.   The vertical seal device forms, in the inner region, a second inner seal portion that extends in parallel with the first inner seal portion and is continuous with the pair of first vertical seal portions. The manufacturing apparatus of the film packaging bag of any one of these. A band-shaped film sterilized in advance is formed into a cylindrical shape, and side edges on both sides of the film are overlapped to form a first side, and the same sides of the film are connected to the side edges A bag making process of overlapping in an inner region located inside the part;
On the first side of the film, a pair of first vertical seal portions that are located apart from each other in the longitudinal direction of the film are formed, and between the pair of first vertical seal portions in the inner region. A vertical seal forming step for forming a first inner seal portion continuous with the pair of first vertical seal portions in the portion;
Forming a first lateral seal portion extending in the width direction of the film;
Filling the contents from the upper opening of the cylindrical film whose bottom is closed by the first horizontal seal portion;
Attaching a plug to an outer portion located outside the inner region of the first side of the film, and forming a second vertical seal portion on the outer portion;
Forming a second transverse seal portion extending in the width direction and sealing the contents above the first transverse seal portion of the film,
The first vertical seal portion and the second vertical seal portion form a continuous vertical seal portion that extends continuously along the first side, and the first inner seal portion is the continuous vertical seal portion. And the peelability is higher than the horizontal seal part,
The method for producing a film packaging bag, wherein the bag making step and the vertical seal forming step are performed inside the sterilization zone, and the step of attaching the plug is performed outside the sterilization zone.   The method for manufacturing a film packaging bag according to claim 7, wherein the first inner seal portion has a bent portion.   The method of manufacturing a film packaging bag according to claim 8, wherein the bent portion has a corner portion.   The method for manufacturing a film packaging bag according to claim 9, wherein the first inner seal portion has a V shape.   11. The method according to claim 8, further comprising a step of attaching a pair of gripping portions to positions facing each other in the vicinity of the bent portion on an outer surface facing the space filled with the contents of the film. Manufacturing method for film packaging bags.   12. The method according to claim 7, further comprising forming a second inner seal portion that extends in parallel with the first inner seal portion and is continuous with the pair of first vertical seal portions in the inner region. The manufacturing method of the film packaging bag of 1 item | term. Having a bag body and a cap attached to the bag body;
The bag body is divided into a space filled with contents and a space connected to the spigot by a peelable first inner seal portion that seals mutually facing inner surfaces of the bag body. ,
The first inner seal portion is formed continuously along a line having a start point and an end point at the seal portion of the outer edge portion of the bag body and having at least one bent portion in the inner region of the outer edge portion. , Film packaging bags.   The film packaging bag according to claim 12, wherein the bag body is sterilized, and the plug is not sterilized.   The film packaging bag according to claim 13 or 14, wherein the bent portion is a corner portion.   The film packaging bag according to claim 15, wherein the first inner seal portion has a V shape.   The said 1st inner side seal part has the said starting point and the said end point in the said outer edge part to which the said stopper of the said bag main body was attached, The film packaging of any one of Claims 13-16 bag.   18. The device according to claim 13, further comprising a pair of gripping portions at positions facing each other in the vicinity of the bent portion on an outer surface of the bag body facing the space filled with the contents. The film packaging bag described.   The film packaging bag according to claim 18, wherein the grip portion is a pull tab.   The film packaging bag according to claim 18, wherein the grip portion is a ring.   21. The device according to claim 13, wherein the inner region includes a second inner seal portion that extends in parallel with the first inner seal portion and is continuous with the pair of first vertical seal portions. Film packaging bag.

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