CN114555478B - Bag making and filling method and bag making and filling system - Google Patents
Bag making and filling method and bag making and filling system Download PDFInfo
- Publication number
- CN114555478B CN114555478B CN202080073168.9A CN202080073168A CN114555478B CN 114555478 B CN114555478 B CN 114555478B CN 202080073168 A CN202080073168 A CN 202080073168A CN 114555478 B CN114555478 B CN 114555478B
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- Prior art keywords
- laminated film
- film
- multilayer
- filling
- multilayer laminated
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000001954 sterilising effect Effects 0.000 claims abstract description 41
- 239000012790 adhesive layer Substances 0.000 claims abstract description 27
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 19
- 239000003206 sterilizing agent Substances 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims description 22
- 238000003825 pressing Methods 0.000 claims description 16
- 238000003475 lamination Methods 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 239000005001 laminate film Substances 0.000 claims description 7
- 230000000844 anti-bacterial effect Effects 0.000 claims description 6
- 239000003899 bactericide agent Substances 0.000 claims description 6
- 238000005429 filling process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 27
- 239000010410 layer Substances 0.000 description 52
- 239000000463 material Substances 0.000 description 9
- 238000004806 packaging method and process Methods 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 229920002647 polyamide Polymers 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000010409 ironing Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920005653 propylene-ethylene copolymer Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920001634 Copolyester Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
- B65B55/02—Sterilising, e.g. of complete packages
- B65B55/04—Sterilising wrappers or receptacles prior to, or during, packaging
- B65B55/10—Sterilising wrappers or receptacles prior to, or during, packaging by liquids or gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
- B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
- B65B55/02—Sterilising, e.g. of complete packages
- B65B55/04—Sterilising wrappers or receptacles prior to, or during, packaging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
- B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
- B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
- B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
- B65B9/213—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web having intermittent motion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
- B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
- B65B9/22—Forming shoulders; Tube formers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
Abstract
Provided is a bag-making and filling method capable of suppressing peeling of a laminated film. According to the present invention, there is provided a bag-making and filling method comprising a sterilization step of sterilizing a multilayer laminated film comprising a tubular laminated film having an adhesive layer flattened by bringing the multilayer laminated film into contact with a sterilizing agent, and a bag-making and filling step of heat-sealing the sterilized multilayer laminated film to form a tubular body having a closed lower end, filling a content into the tubular body, and then heat-sealing an upper end of the tubular body.
Description
Technical Field
The present invention relates to a bag making and filling method and a bag making and filling system.
Background
Patent document 1 discloses a method in which a laminated film having an adhesive layer is sterilized by contacting the laminated film with a sterilizing agent composed of hydrogen peroxide, and then the laminated film is filled in a bag.
Prior art literature
Patent literature
Patent document 1: japanese patent application laid-open No. 2015-81142
Disclosure of Invention
(problem to be solved by the invention)
In the method of patent document 1, when the adhesive layer of the laminated film is in contact with the bactericide, peeling of the laminated film may occur.
The present invention has been made in view of the above circumstances, and provides a bag-making and filling method capable of suppressing peeling of a laminated film.
(means for solving the problems)
According to the present invention, there is provided a bag-making and filling method comprising a sterilization step of sterilizing a multilayer laminated film comprising a tubular laminated film having an adhesive layer flattened by bringing the multilayer laminated film into contact with a sterilizing agent, and a bag-making and filling step of heat-sealing the sterilized multilayer laminated film to form a tubular body having a closed lower end, filling a content into the tubular body, and heat-sealing an upper end of the tubular body.
In the present invention, a multilayer laminated film formed by flattening a tubular laminated film is brought into contact with a bactericide. Since the adhesive layer is not exposed at the end edge in the width direction of the multilayer laminated film, the adhesive layer is not in contact with the sterilizing agent. Therefore, peeling of the laminated film due to the bactericide can be suppressed.
Various embodiments of the present invention are illustrated below. The embodiments shown below can be combined with each other.
In the above method, preferably, the sterilizing agent is a sterilizing liquid, and the sterilizing step is performed by immersing the multilayer laminated film in the sterilizing liquid.
In the above method, the multilayer laminated film preferably includes an inner laminated film and an outer laminated film that face each other, and a lamination step of laminating the inner laminated film and the outer laminated film is preferably provided after the sterilization step and before the bag-making and filling step.
The bag-making and filling system preferably includes a sterilization device for sterilizing a multilayer laminated film comprising a tubular laminated film having an adhesive layer by bringing the multilayer laminated film into contact with a sterilizing agent, and a bag-making and filling device for heat-sealing the sterilized multilayer laminated film to form a tubular body having a closed lower end, and then heat-sealing an upper end of the tubular body, thereby filling the tubular body with a content.
Drawings
In fig. 1, fig. 1A is a view showing the layer structure of the cylindrical laminated film 2, and fig. 1B is an enlarged view of a region B in fig. 1A.
Fig. 2A is a view showing the layer structure of the multilayer laminated film 1, and fig. 2B is an enlarged view of a region B in fig. 2A.
Fig. 3A is a perspective view of the package bag 10, and fig. 3B is a cross-sectional view of the vicinity of the vertical seal portion 22.
Fig. 4 is an explanatory diagram for explaining the bag-making and filling method.
Detailed Description
Embodiments of the present invention are described below. Various features shown in the embodiments shown below may be combined with each other. In addition, each feature may independently constitute the invention.
1. Multilayer laminated film 1
As shown in fig. 1 to 2, the multilayer laminated film 1 is formed by flattening a cylindrical laminated film 2. As shown in fig. 1, the tubular laminated film 2 is a tubular laminated film, and includes an inner layer 2a, an adhesive layer 2b, an intermediate layer 2c, an adhesive layer 2d, and an outer layer 2e. The inner layer 2a, the intermediate layer 2c, and the outer layer 2e are bonded to each other by the adhesive layers 2b, 2 d.
As shown in fig. 2, the multilayer laminated film 1 includes an inner laminated film 11 and an outer laminated film 12 that face each other. The inner laminated film 11 and the outer laminated film 12 are provided with layers 11a to 11e and 12a to 12e derived from the layers 2a to 2e, respectively. The inner layer 11a, the intermediate layer 11c, and the outer layer 11e are bonded to each other by the adhesive layers 11b and 11 d. The inner layer 12a, the intermediate layer 12c, and the outer layer 12e are bonded to each other by the adhesive layers 12b and 12 d.
The inner laminated film 11 and the outer laminated film 12 are connected to each other at the widthwise end edges 1 a. Therefore, the adhesive layers 11b,12b,11d,12d (hereinafter referred to as the adhesive layer 11b or the like) are not exposed to the end edges 1a of the multilayer laminated film 1 in the width direction, and the adhesive layer 11b or the like is not brought into contact with the sterilizing agent in the sterilization step described later, so that peeling of the laminated films 11, 12 constituting the multilayer laminated film 1 by the sterilizing agent can be suppressed. In addition, if the adhesive layer is exposed at the end edge in the width direction as in patent document 1, the sterilizing agent penetrates into the interlayer from the end edge, and this risk does not exist in the present embodiment. In the structure of patent document 1, a special adhesive having particularly high adhesive strength may be used to prevent peeling of the laminated film, but such an adhesive may reduce flexibility of the laminated film and harden the laminated film. When the packaging bag 10 (see fig. 3) is manufactured by filling a bag with such a laminated film, the packaging bag 10 is likely to be folded, and the packaging bag 10 is likely to be broken at the folded portion. On the other hand, in the present embodiment, since the adhesive layer 11b and the like are not in contact with the sterilizing agent, the occurrence of breakage of the package bag 10 can be suppressed without using a special adhesive.
In one example, the multilayer laminated film 1 may be formed by: the cylindrical parison formed by the coextrusion molding is inflated (i.e., by inflation molding) to form the cylindrical laminated film 2, and the cylindrical laminated film 2 is flattened by flattening. The cylindrical laminated film 2 may be flattened by sandwiching it with a pair of pressing members (for example, rollers). Thus, the multilayer laminated film 1 composed of the inner laminated film 11 and the outer laminated film 12 connected to each other at the edge 1a is obtained. Since the films 11, 12 are pressed against each other using a pair of pressing members, the inner layers 11a,12a of the films 11, 12 are adhered to each other (pseudo-adhesive). In fig. 2, the inner layers 11a and 12a are shown separated for convenience of illustration. The multilayer laminated film 1 is wound into a roll shape to form a roll material F shown in fig. 4. In the bag-making and filling method using the multilayer laminated film 1, the multilayer laminated film 1 is preferably supplied by unwinding a roll material F in a roll form. The thickness of the multilayer laminated film 1 is, for example, 20 to 300. Mu.m, preferably 70 to 140. Mu.m.
The inner layers 11a,12a and the outer layers 11e, 12e are preferably made of thermoplastic resin having heat sealability. Examples of such resins include polyolefin resins such as low-density polyethylene, linear low-density polyethylene, medium-density polyethylene, high-density polyethylene, polypropylene, and propylene-ethylene copolymer, polyamide or copolyamide resins having a low melting point or a low softening point, polyester or copolyester resins, and polycarbonate resins.
When the inner layers 11a,12a are heat-sealable, and the multilayer laminated film 1 is heat-sealed to form the multilayer laminated film 1 into a bag, the inner layers 11a,12a are fused at the heat-sealed portions (the vertical seal portions 22 and the horizontal seal portions 23, 24 in fig. 2), and the rigidity of the heat-sealed portions is improved. If fusion of the inner layers 11a,12a is not required, the inner layers 11a,12a may be omitted.
When the multilayer laminated film 1 is used for bag making and filling, the inner layers 11a and 12a do not come into contact with the contents, and the outer layer 11e of the inner laminated film 11 comes into contact with the contents. Therefore, in order to suppress the entry of the additive into the content, the material constituting the outer layer 11e is preferably free of the additive. In particular, when the content is the subject of "relevant part of standards for ingredients of milk and dairy products, etc.", the technical meaning of making the material constituting the outer layer 11e free of additives is particularly remarkable. On the other hand, for the purpose of improving the flexibility of the multilayer laminated film 1, an additive such as a softening agent may be added to the inner layers 11a and 12 a.
The intermediate layers 11c, 12c are preferably composed of a material having a higher melting point than the inner layers 11a,12a and the outer layers 11e, 12e. At this time, heat sealing can be performed stably by heat sealing at a temperature at which the inner layers 11a,12a and the outer layers 11e, 12e are melted but the intermediate layers 11c, 12c are not melted. As such a material, a polyamide-containing resin is exemplified. The constituent resin of the intermediate layers 11c, 12c may be polyamide alone or may contain other resins. As the other resin, a resin that improves the rigidity of the intermediate layers 11c, 12c is preferable. The polyamide content is preferably 50 mass% or more with respect to the total resin constituting the intermediate layers 11c, 12 c. Specifically, the content is, for example, 50, 60, 70, 80, 90, or 100 mass%, and may be within a range between any 2 values exemplified herein.
The adhesive layer 11b and the like are preferably made of an adhesive material, and examples of the adhesive material include an acid-modified polyolefin (for example, maleic anhydride-modified polyethylene) to which a carboxyl group is introduced in the polyolefin, and an ethylene-vinyl acetate copolymer (EVA).
2. Packaging bag 10
As shown in fig. 3, the packaging bag 10 according to one embodiment of the present invention is formed by forming the multilayer laminated film 1 into a bag shape.
The package 10 includes a longitudinal seal 22 and transverse seals 23, 24. The longitudinal seal 22 may be formed by: the film 1 is bent into a tubular shape so that the inner laminated film 11 is on the inner surface side, the outer layers 11e at both ends of the inner laminated film 11 are overlapped with each other, and the overlapped portion 15 is heat-sealed into a band shape except for the edge portion in this state. The end edges serve as peeling parts 16, 17 adjacent to the vertical seal part 22. The vertical seal portion 22 can be easily peeled off by gripping and pulling the peeling portions 16, 17.
The package bag 10 may be opened by cutting the vertical seal portion 22 or the horizontal seal portions 23, 24. In this case, the peeling parts 16, 17 may be omitted. Further, a slit or a notch may be provided in the vertical seal portion 22 or the horizontal seal portions 23, 24 to facilitate cutting.
3. Bag making and filling method
Next, a bag-making and filling method using the film 1 will be described with reference to fig. 4. The method may be implemented using a bag-making and filling system 100 having a sterilizing device 3 and a bag-making and filling device 8. The bag-making and filling method of the present embodiment includes a sterilization step and a bag-making and filling step. The following describes each step in detail.
3-1 sterilizing Process
The sterilization process may be performed using the sterilization apparatus 8. In the sterilization step, the film 1 is sterilized by bringing the sterilizing agent into contact with the film 1 discharged from the roll F.
Specifically, the film 1 first discharged from the roll F is guided to the sterilizing device 3 via the roller 4 a. A sensor 119 is disposed in the path from the reel-like web F to the sterilizing device 3, and detects a gauge line printed at regular intervals in the longitudinal direction on the film 1, and feeds the film 1 of a predetermined length at regular intervals onto the rail of the bag-making and filling system 100. A transverse sealing machine may be disposed between the web F and the sterilizing device 3 to transversely seal the end of the film 1 in the longitudinal direction (the direction of flow of the film 1). This can prevent the bactericide from entering between the inner laminated film 11 and the outer laminated film 12 from the end in the longitudinal direction of the film 1. On the other hand, the film 1 may be provided in the bag-making and filling system 100 so that the longitudinal end of the film 1 does not come into contact with the sterilizing agent. At this time, a transverse sealer between the roll F and the sterilizing device 3 is not required.
The sterilizing device 3 is a device capable of sterilizing the film 1, and the film 1 may be sterilized by immersing the film 1 in a sterilizing liquid 3a which is a liquid containing a sterilizing agent, or the film 1 may be sterilized by bringing the film 1 into contact with mist or gas of the sterilizing agent. As the bactericide, hydrogen peroxide can be exemplified. In the sterilizing device 3, the film 1 is guided by rollers 4b, 4c to move toward the drying device 7.
Further, the film 1 just discharged from the roll F is in a state where the inner laminated film 11 and the outer laminated film 12 are in close contact with each other, and there is a possibility that the close contact between the inner laminated film 11 and the outer laminated film 12 may be reduced when the film 1 passes through the sterilizing device 3. If the adhesion between the inner laminated film 11 and the outer laminated film 12 is reduced, a problem occurs when the film 1 is formed into a bag shape.
Therefore, in the present embodiment, a lamination step of laminating the inner laminated film 11 and the outer laminated film 12 is performed after the sterilization step and before the bag-making and filling step. Specifically, this step can be performed by sandwiching the film 1 with a pair of pressing members (for example, rollers) 5. By performing the pressing step, occurrence of defects in producing bags can be suppressed. In the present embodiment, the pair of pressing members 5 are provided at 2 positions, but may be provided at 1 or 3 or more positions.
In addition, it is preferable to perform the drying step after the sterilization step and before the bag-making and filling step. By performing this step, even if moisture or a sterilizing agent adheres to the film 1 in the sterilization step, the mixing of moisture or a sterilizing agent into the package bag 10 can be suppressed.
In the present embodiment, the drying step is performed by using the air blowing device 6 and the drying device 7. The blowing device 6 blows air 6a to the film 1 to blow off water droplets on the surface of the film 1. The air blowing devices 6 are respectively arranged at two sides of the film 1, and can remove water drops on two sides of the film 1.
The temperature of the inner space 7a of the drying device 7 is higher than the outside of the drying device 7, and the film 1 is dried while passing through the inner space 7 a. The film 1 enters the inner space 7a through the inlet 7b, and is guided by the rollers 4d, 4e, 4f in the inner space 7a to be discharged from the inner space 7a through the outlet 7 c.
The film 1 coming out of the drying device 7 is guided to the former 112 by the roller 4 g.
3-2, bag making and filling procedure
The bag-making and filling process may be performed using the bag-making and filling apparatus 8. In the bag-making and filling step, the inside of the tubular body 13 formed into a tubular shape with the lower end closed by heat-sealing the sterilized film 1 is filled with the content W, and then the upper end of the tubular body 13 is heat-sealed and sealed. This step is described in detail below.
< procedure 1: the film 1 was formed into a tube shape
The film 1 is bent into a tubular shape while passing through the former 112, and is formed in a state where both side edges of the bent front end overlap (that is, a state where the outer layers 11e at both ends of the inner laminated film 11 overlap with each other). Overlapping portions 15 are formed at overlapping portions.
< procedure 2: form the vertical seal portion 22)
Subsequently, the overlapped portion 15 of the film 1 is heat-sealed by using a longitudinal sealer 113 to form a longitudinal seal portion 22. The vertical sealing machine 113 includes a pair of sealing bars, and heat-seals the overlapped portion 15 between the pair of sealing bars at predetermined intervals in accordance with the timing of movement of the film 1 at predetermined intervals.
< procedure 3: forming the lower side transverse sealing part 23)
Next, the openable and closable ironing roller 115 is closed, and ironing is performed on the tubular body 13 formed of the film 1. Thereby, the cylindrical body 13 is flattened. Then, the flattened tubular body 13 is heat-sealed at a predetermined position by a transverse sealing machine 116 to form a transverse sealing portion 23. The transverse sealing machine 116 includes a pair of sealing bars, and heat-seals the predetermined position by sandwiching the predetermined position between the pair of sealing bars for a predetermined time. Thereby, the lower end of the tubular body 13 is closed.
< procedure 4: filling content-
Next, after the roll 115 for reducing Bao Lashen is opened, a predetermined amount of the content W is charged into the cylindrical body 13 through the hopper 111.
< procedure 5: transverse seal 24 forming the upper portion of the bag
Next, the tubular body 13 and the film 1 following it are discharged together with the package bag 10a before separation by a predetermined length by rotating the conveying roller 114. A pair of sealing bars of the transverse sealing machine 116 are closed for a predetermined time and heat-sealed at predetermined positions to form an upper transverse sealing portion 24 to seal the package 10, while the next package connected thereto on a rail and located upstream forms a lower transverse sealing portion 23.
< procedure 6: cutting the boundary line of continuous bags
The pressurizing and cutting machine 118 is closed, the lower side horizontal sealing part 23 of the packaging bag 10a before separation and the upper side horizontal sealing part 24 connected with the lower side horizontal sealing part are pressed, and the packaging bag 10 is dropped from the conveyor 130 by the cutting edge 118a passing through the two.
Thereby manufacturing the package 10 filled with the contents W. When a strong impact is applied to the package bag 10 in a state where the inner laminated film 11 and the outer laminated film 12 constituting the package bag 10 are in a sealed state immediately after the package bag 10 is manufactured, the inner laminated film 11 and the outer laminated film 12 are simultaneously damaged, and the content W easily leaks. However, as time passes, the content W permeates the inner laminated film 11, and the adhesion between the inner laminated film 11 and the outer laminated film 12 is released, so that a gap is likely to occur between the two. In this state, the inner laminated film 11 and the outer laminated film 12 are less likely to be damaged at the same time, and thus leakage of the content W can be suppressed.
4. Other embodiments
The layer constitution of the multilayer laminated film 1 and the cylindrical laminated film 2 can be changed appropriately. In the above embodiment, the cylindrical laminate film 2 includes 5 layers including the adhesive layer, but the number of layers may be more or less than 5.
The form of heat-sealing the multilayer laminated film 1 to form the package 10 can be changed as appropriate. In the above embodiment, the overlapping portion 15 is of the palm-closed type, but the overlapping portion 15 may be of the cylinder-sealed type.
The drying step may be omitted if not required. The drying step may be performed using only one of the air blowing device 6 and the drying device 7, or may be performed by natural drying.
(description of the reference numerals)
1: multilayer laminated film, 1a: end edge, 2: tubular laminated film, 2a: inner layer, 2b: adhesive layer, 2c: intermediate layer, 2d: adhesive layer, 2e: outer layer, 3: sterilization device, 3a: sterilizing liquid, 4a: roller, 4b: roller, 4c: roller, 4d: roller, 4e: roller, 4f: roller, 4g: roller, 5: pressing part material, 6: blowing device, 6a: air, 7: drying device, 7a: interior space, 7b: inlet, 7c: outlet, 8: bag making and filling device, 10: packaging bag, 10a: packaging bag, 11: inner laminated film, 11a: inner layer, 11b: adhesive layer, 11c: intermediate layer, 11d: adhesive layer, 11e: an outer layer, 12: outer laminated film, 12a: inner layer, 12b: adhesive layer, 12c: intermediate layer, 12d: adhesive layer, 12e: outer layer, 13: cylindrical body, 15: overlapping portion, 16: stripping part, 17: stripping part, 22: vertical seal portion, 23: transverse seal portion, 24: transverse seal portion, 100: bag-making filling system, 111: hopper, 112: shaper, 113: longitudinal sealer, 114: conveying roller, 115: thinning the drawing roller, 116: transverse sealer, 118: pressurization cutter, 118a: cutting edge, 119: sensor, 130: conveyor belt, F: reel-like coil stock, W: the contents.
Claims (3)
1. A method for producing and filling bags, comprising a sterilization step, a drying step, a pressing step, and a bag producing and filling step,
in the sterilization step, a multilayer laminate film, which does not include a paper base and is formed by flattening a tubular laminate film having an adhesive layer, is brought into contact with a sterilizing agent to sterilize the multilayer laminate film, the multilayer laminate film having an inner laminate film and an outer laminate film opposed to each other,
in the bag-making and filling step, the sterilized multilayer laminated film is bent into a tubular shape, a superposed portion in which both side edge portions of the multilayer laminated film are superposed is heat-sealed to form a vertical seal portion, and then a first horizontal seal portion is heat-sealed to form a tubular body having a closed lower end, and after filling the tubular body with the content, a second horizontal seal portion is formed at an upper end of the tubular body to seal,
the drying process and the pressing process are performed after the sterilization process and before the bag making and filling process,
in the drying step, after droplets on the surface of the multilayer laminated film are removed by blowing air, the multilayer laminated film is passed through a drying device having an inner space at a temperature higher than that of the outside,
the pressing process comprises a first pressing process and a second pressing process,
the first pressing process is performed before the drying process,
in the first lamination step, the inner laminated film and the outer laminated film are laminated by sandwiching the multilayer laminated film with a first pair of lamination members,
in the second lamination step, the inner laminated film and the outer laminated film are laminated by sandwiching the multilayer laminated film between a second pair of lamination members disposed inside the drying device.
2. The method of claim 1, wherein,
the bactericide is a sterilizing liquid,
the sterilization step is performed by immersing the multilayer laminated film in the sterilization liquid.
3. A bag-making and filling system comprises a sterilizing device, a drying device, an air blowing device, a bag-making and filling device, a first pair of pressing members and a second pair of pressing members,
in the sterilization apparatus, a multilayer laminated film is brought into contact with a sterilizing agent to sterilize the multilayer laminated film, the multilayer laminated film does not include a paper base, and is formed by flattening a cylindrical laminated film having an adhesive layer, the multilayer laminated film has an inner laminated film and an outer laminated film which are opposed to each other,
the first pair of lamination parts are arranged between the sterilizing device and the blowing device, and the inner lamination film and the outer lamination film are laminated by clamping the sterilized multilayer lamination film,
the blowing device is arranged between the sterilizing device and the drying device, and blows air to the multilayer laminated film to blow off liquid drops on the surface of the multilayer laminated film,
in the drying apparatus, the surface of the multilayer laminated film is dried by passing the sterilized multilayer laminated film through an internal space having a higher temperature than the outside,
the second pair of pressing members are disposed inside the drying device, press the inner laminated film and the outer laminated film by sandwiching the sterilized multilayer laminated film,
in the bag-making and filling apparatus, the sterilized multilayer laminated film after passing through the second pair of pressing members is bent into a tubular shape, the overlapped portions where both side edge portions of the multilayer laminated film overlap each other are heat-sealed to form a vertical seal portion, and then heat-sealed to form a first horizontal seal portion, thereby forming a tubular body in a tubular shape with a closed lower end, and after filling the tubular body with the content, a second horizontal seal portion is formed at an upper end of the tubular body to seal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-216595 | 2019-11-29 | ||
| JP2019216595A JP7381862B2 (en) | 2019-11-29 | 2019-11-29 | Bag making and filling method, bag making and filling system |
| PCT/JP2020/043643 WO2021106863A1 (en) | 2019-11-29 | 2020-11-24 | Bag making and filling method, and bag making and filling system |
Publications (2)
| Publication Number | Publication Date |
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| CN114555478A CN114555478A (en) | 2022-05-27 |
| CN114555478B true CN114555478B (en) | 2024-01-26 |
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| CN202080073168.9A Active CN114555478B (en) | 2019-11-29 | 2020-11-24 | Bag making and filling method and bag making and filling system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7381862B2 (en) |
| CN (1) | CN114555478B (en) |
| WO (1) | WO2021106863A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2021084678A (en) | 2021-06-03 |
| WO2021106863A1 (en) | 2021-06-03 |
| JP7381862B2 (en) | 2023-11-16 |
| CN114555478A (en) | 2022-05-27 |
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