Manufacturing method of pouch container, pouch container, pouch container with cap, and double container with pour-out mechanism

Abstract

To prevent a content from deteriorating from a mouth in a distribution step, to enable usage to the last without having to use a large force, and to prevent the mouth from falling off even when used in a high-temperature and high-humidity situation.SOLUTION: A manufacturing method of a pouch container comprises the steps for: fusing a resin layer on an inner side of an edge part of a first film 11 and a resin layer on an inner side of an edge part of one or more second films 12, 13 to form a pouch bag with one closed edge; forming a resin mouth member 20 having a flange part and a standing part; attaching, by integrating the resin, a bottom face of the resin flange part of the mouth member 20 to a resin layer on an outer side of the first film 11 of the pouch bag by fusion using an ultrasonic wave, heat, or a high-frequency wave; filling a content from one open edge of the pouch bag; and fusing the one edge to close the pouch bag and seal the inside thereof.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a method for manufacturing a pouch container having a mouth, a pouch container, a pouch container with a cap, and a double container with a discharge mechanism including a pouch container. [Background technology]

[0002] A typical aluminum pouch that blocks light and oxygen has a structure in which a mouth (also called a spout) is inserted (for example, Patent Document 1). However, in the case of an aluminum pouch with an inserted mouth, since the mouth is made of resin, there is a possibility that light and oxygen will pass through the mouth during the distribution process, causing deterioration of the contents through the mouth.

[0003] Therefore, aluminum tubes (laminated tubes) with a membrane at the mouth are available as containers that can ensure oxygen barrier properties during the distribution process.

[0004] Meanwhile, as another configuration for maintaining airtightness until immediately before use, Patent Document 3 discloses a pouch container having an upper surface formed of a thick disk with the opening in close contact with the disk.

[0005] Furthermore, as a configuration for maintaining the hermeticity until immediately before use, Patent Document 4 discloses a pouch container in which the opening is attached to the upper surface with an adhesive layer made of an adhesive. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Re-tabled publication No. 2007 / 126044 [Patent Document 2] JP 2006-044768 A [Patent Document 3] Patent No. 3624132 [Patent Document 4] JP 2001-335081 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, a typical aluminum tube (laminated tube) such as that in Patent Document 2 has a thick upper surface around the mouth, and in a pouch configuration with a thick upper surface such as that in Patent Document 3, the upper surface is difficult to deform, so a large force is required to use up the entire content, especially when there is only a small amount left.

[0008] On the other hand, when the mouth is fixed with an adhesive as in Patent Document 4, for example, if the pouch container is left in a hot and humid environment such as a bathroom or washroom, or if the pouch container is washed with water, the adhesive at the mouth may melt and the mouth may come off.

[0009] In view of the above circumstances, the present invention provides a method for manufacturing a pouch container in which the contents do not deteriorate from the mouth during distribution, no great force is required to use up the contents, and the mouth does not come off even when used in hot and humid conditions. [Means for solving the problem]

[0010] In order to solve the above problems, in one aspect of the present invention, a step of fusing a resin layer on the inside of an end portion of the first film and a resin layer on the inside of an end portion of one or more second films to form a pouch bag having an opening at one end; A step of molding a resin mouth member having a flange portion and an upright portion; a step of attaching a lower surface of the resin flange of the mouth member to an outer resin layer of the first film of the pouch bag by welding the resin integrally by any one of ultrasonic, heat, and high frequency; filling the pouch with contents through one open end; and a step of sealing the one end to close the pouch bag and seal the inside. A method for manufacturing a pouch container is provided. Effect of the Invention

[0011] According to one aspect, a method for manufacturing a pouch container is provided in which the contents do not deteriorate from the mouth part during the distribution process, no great force is required to use up the contents, and the mouth part does not come off even when used in a hot and humid condition. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is an external view showing a pouch container according to a first configuration example of the present invention. [Diagram 2] 3 is a flow chart of a first manufacturing method for the pouch container of the first configuration example of the present invention. [Diagram 3] 1 is an exploded view of a pouch container according to a first configuration example of the present invention, showing the side, top, and mouth. [Figure 4] FIG. 2 is an explanatory diagram showing welding of films together to form a pouch bag of the first configuration example in the first manufacturing method. [Diagram 5] FIG. 4 is an overall explanatory view showing how the mouth portion is attached to the upper film in the first manufacturing method. [Figure 6] FIG. 4 is an explanatory diagram showing how the mouth portion is welded to the upper film by ultrasonic waves in the first manufacturing method. [Figure 7] FIG. 11 is an explanatory diagram showing how the mouth portion is fused to the upper film by heat from a heating element in the first manufacturing method. [Figure 8] FIG. 4 is an explanatory diagram showing how the mouth portion is fused to the upper film by high frequency in the first manufacturing method. [Figure 9] FIG. 13 is an explanatory diagram showing the state in which the contents are being filled into the pouch from the rear end. [Figure 10] FIG. 13 is a diagram illustrating closing of the rear end of the pouch bag. [Figure 11] FIG. 13 is a diagram illustrating folding of the rear end. [Figure 12] 4 is a flow chart of a second manufacturing method for the pouch container according to the first configuration example of the present invention. [Figure 13] FIG. 13 is an explanatory diagram showing how the mouth portion is attached to the upper film by insert molding and formed integrally with the upper film in the second manufacturing method. [Figure 14] 5 is a flow chart of a third manufacturing method for the pouch container according to the first configuration example of the present invention. [Figure 15] FIG. 11 is an explanatory diagram showing the mouth portion and the bonding of an upper film in the third manufacturing method. [Figure 16] FIG. 13 is an explanatory diagram of attaching the mouth portion to the upper film by a heating element in the third manufacturing method. [Figure 17] 5 is a flow chart of a fourth manufacturing method for the pouch container according to the first configuration example of the present invention. [Figure 18] FIG. 13 is an explanatory diagram showing how the mouth portion is attached to the upper film and formed integrally therewith by in-mold molding in the fourth manufacturing method. [Figure 19] FIG. 4 is an exploded view of a pouch container according to a second configuration example of the present invention, showing the side, top, and mouth. [Figure 20] FIG. 11 is an exploded view of a pouch container according to a third configuration example of the present invention, showing the side, top, and mouth. [Figure 21] FIG. 11 is an external view showing a pouch container according to a fourth configuration example of the present invention. [Figure 22] FIG. 13 is an external view showing a pouch container according to a fifth configuration example of the present invention. [Diagram 23] 13A and 13B are a top view and a cross-sectional view showing a pouch container according to a fifth configuration example of the present invention. [Figure 24] 13A and 13B are an external view and a cross-sectional view showing a pouch container according to a sixth configuration example of the present invention. [Diagram 25] FIG. 13 is an explanatory diagram showing how films are welded together to form a pouch bag according to a sixth configuration example of the present invention. [Figure 26] 13A and 13B are top and bottom external views showing a pouch container according to a seventh configuration example of the present invention. [Figure 27] A diagram showing the pouch container of the present invention combined with a cap that is opened by twisting. [Figure 28] Exploded view of the cap area. [Figure 29] FIG. [Diagram 30] 28A to 28C are diagrams for explaining the procedure for opening the cap in FIG. 27. [Diagram 31] A diagram explaining how the top film is broken through by the bottom edge of the plug as the cap rotates. [Diagram 32]FIG. 2 is an explanatory diagram showing the pouch container of the present invention when used as a refill container. [Diagram 33] FIG. 11 is a diagram of a double container equipped with a pouch container according to a fifth configuration example of the present invention as an inner container. [Diagram 34] FIG. 13 is a diagram showing an example in which a push pump is attached as a discharge mechanism to the mouth of the double container of the present invention. [Diagram 35] 35 is a cross-sectional view of the push pump of FIG. 34. [Diagram 36] FIG. 13 is a diagram showing an example in which a push pump with a tray is attached as a discharge mechanism to the mouth of the double container of the present invention. [Figure 37] FIG. 13 is a diagram showing an example in which a dispenser is attached to the mouth of the double container of the present invention as a dispensing mechanism. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following drawings, the same components are denoted by the same reference numerals, and duplicated explanations may be omitted.

[0014] The present invention relates to a method for manufacturing a pouch container having a mouth, a pouch container, a pouch container with a cap, and a double container with a discharge mechanism including a pouch container. Here, the contents stored in the pouch container of the present invention are suitable for those containing substances that are easily changed by oxygen and / or light. Examples of contents include, but are not limited to, cosmetics containing vitamins (vitamins A, C, etc.) and their derivatives, medicines, foods, etc. that are easily deteriorated by oxidation.

[0015] FIG. 1 is an external view showing a pouch container according to a first configuration example of the present invention.

[0016] The pouch container 1 has a pouch bag 10 and a mouth portion 20 .

[0017] The pouch 10 is composed of two side films 12 and 13 and one top film 11.

[0018] The mouth portion (also called a mouth member or spout) 20 has a flat, disk-shaped flange 21 and a cylindrical upright portion 22, and a helical protrusion (screw protrusion) 23 (see Figure 5) is formed on the outer periphery of the upright portion 22.

[0019] The mouth portion 20 is attached to the upper film 11 by melt bonding the resins together without using an adhesive. As a manufacturing method for this pouch container 1, the following first to fourth manufacturing methods will be described.

[0020] <First manufacturing method> A first manufacturing method for the pouch container 1 according to the first configuration example of the present invention will be described with reference to Figs.

[0021] FIG. 2 is a diagram showing a flow of a first manufacturing method for the pouch container 1 according to the first configuration example of the present invention.

[0022] First, in step S11, a film material f11 of the top film 11 and film materials f12, f13 of the side films 12, 13 are formed, each having a thermoplastic outer resin layer 111 (121, 131) on the surface, a metal layer 112 (122, 132) inside, and a thermoplastic inner resin layer 113 (123, 133) as the innermost layer. Alternatively, the film materials may be ordered from outside in advance.

[0023] Then, in step S12, an end of the top film material f11 and ends of the side films f12 and f13 are fused together, and the film material is then cut along the film shape to form a bag with one end open.

[0024] Meanwhile, in parallel with steps S11 and S12, a resin spout 20 is molded in S13. Alternatively, the spout member may be pre-ordered from outside.

[0025] Next, in step S14, the underside 211 of the thermoplastic resin flange 21 of the mouth 20 is attached to the thermoplastic resin layer 111 on the surface of the top film 11, which will become the upper surface of the pouch bag, by integrating the resin together using any one of ultrasonic, heat, or high-frequency welding methods.

[0026] In step S15, the contents are filled into the pouch from the open end.

[0027] In step S16, one ends (lower ends) of the pouch bags are fused together to seal the inside of the pouch.

[0028] Each of these steps is described in detail below.

[0029] (First configuration example) FIG. 3 is a diagram showing the pouch container 1 according to the first configuration example of the present invention, exploded into two side surfaces, a top surface, and a mouth portion.

[0030] In this configuration example, the top film 11, which is the first film, is substantially hexagonal.

[0031] The two side films 12 (13), which are the second films, each have a shape that combines a rectangle 12r and a trapezoid 12t, with the short side that is the upper side of the rectangle 12r (13r) and the lower base portion of the trapezoid 12t (13t) being formed continuously.

[0032] FIG. 4 is an explanatory diagram of an example of the step (S12) of overlapping and welding films to form a pouch in the first manufacturing method.

[0033] The pouch-forming step S11 in FIG. 2, in which films 11, 12, and 13 are joined together to form a bag, will be described with reference to FIG. 3 and FIG.

[0034] As shown in Fig. 4, a strip-shaped top film material f11 that will become the top film is supplied from the side and is transported while being folded in half by a half-folded plate FT. In addition, a strip-shaped side film material f12 that will become the side film 12 is supplied from above, and a strip-shaped side film material f13 that will become the side film 13 is supplied from below. As a result, after merging, the top film material f11 folded in half is transported in a state where it is sandwiched from above and below by the side film materials f12 and f13.

[0035] Then, by using the seal bar pair H1, which is a heating member, the ends of the top film material f11 and the side film material f12, and the top film material f11 and the side film material f13 (E21 and E21, E13 and E31 in Fig. 3) are welded together. Note that, although Fig. 4 shows the seal bar pair H1 in a rectangular parallelepiped shape, the heated portion of the seal bar pair H1 is in a substantially trapezoid shape that follows the end of the shape of the film after cutting (sealed portion E).

[0036] In addition, in the above-mentioned fusion process and the below-described welding process of the mouth portion 20, the heating member is subjected to a surface treatment such as Teflon (registered trademark) so that the inner or outer resin layer of the film is not adhered to the heating member.

[0037] Thereafter, the side ends of the side film materials f12 and f13 (E22 and E32, E23 and E33 in Fig. 3) are welded together using a pair of seal bars H2, which are heating members. As shown in Fig. 4, by continuously forming a film mold on the strip-shaped film material, the downstream side end of the mold for the upstream side films 12, 13 and the upstream side end of the mold for the downstream side films 12, 13 can be welded together by heating the seal bar H2 once.

[0038] After the edges are welded, the film material is cut along the film pattern by cutting means C to produce a film bag with only one edge open. For example, a Thomson blade corresponding to the shape of the side film 12 is provided on the underside of the cutting means C, and the bags are cut out one by one by the pattern-shaped Thomson blade. This completes step S12.

[0039] In addition, in Figures 3 and 4, the process of cutting the film material before cutting into individual pieces is shown after the welding process of the film ends is completed, but welding of the film ends may also be performed after the film is cut.

[0040] Thereafter, the mouth portion 20 is attached and the contents are filled, and then in S16, the lower end E24 of one side film 12 and the approximately rectangular lower end E34 of the other side film 13 are fused together to close the open end and seal the pouch bag.

[0041] Because of this bag-like configuration, the mouth portion 20 does not come into contact with the contents, so that the contents are all surrounded by the pouch material when the product is manufactured.

[0042] Here, the material of the pouch membrane constituting the side films 12, 13 and the top film 11 will be described.

[0043] The top film 11 and the side films 12, 13 each include an air barrier layer capable of blocking air.

[0044] In detail, the top film 11 to which the mouth member 20 is attached is constructed with a three or more layer structure having resin layers 113, 111 on the inner and outer surfaces to sandwich an air barrier layer 112. The inner resin layer 113 is used for welding the end portion, and the outer resin layer 111 is used for welding the mouth member 20.

[0045] The side films 12, 13 are constructed with a two or more layer structure having at least an air barrier layer 122, 132 and a resin layer 123, 133 on the inner surface side for welding the ends. The side films 12, 13 may also have a resin layer 121, 131 on the outer surface side outside the air barrier layer 122, 132.

[0046] An example of the air barrier layer is a metal layer. The metal of the metal layer is preferably any one of aluminum, iron, gold, silver, titanium, tin, zinc, platinum, ruthenium, palladium, iridium, etc., alloy (tinplate), or metal oxide (aluminum oxide (alumina), etc.). "Including a metal layer" may be entirely made of a metal material, or may include forming a metal film by evaporating a metal onto the surface or one side of the inside of another material (e.g., resin, etc.). The metal of the metal layer is particularly preferably an aluminum layer. The metal layer is an air barrier material and a light barrier material.

[0047] Alternatively, the air barrier layer may be an inorganic layer. The inorganic layer is, for example, a layer containing an inorganic substance such as silica (silicon dioxide). The inorganic layer may be colored to have light blocking properties, or may be transparent to not have light blocking properties.

[0048] Such an inorganic layer may be an inorganic vapor deposition layer formed by vapor depositing an inorganic material on a plastic sheet. By forming an inorganic vapor deposition layer, the flexibility of the film can be improved. The vapor deposited inorganic material is, for example, silica.

[0049] On the other hand, the resin of the resin layer that constitutes the inner and outer surfaces is composed of, for example, an olefin-based resin. Olefin-based resin is a general term for chain hydrocarbons with one double bond, and is a thermoplastic resin whose physical properties change depending on the degree of crystallinity because it is made of crystalline polymers. Examples of olefin-based resins include polypropylene (PP), low-density polyethylene (LDPE), ethylene-vinyl acetate copolymer (EVA), polymethylpentene (TPX), and ultra-high molecular weight polyethylene. Olefin-based resins are chemically stable and resistant to acids and alkalis.

[0050] Alternatively, the outermost resin layer of the upper film may be made of an ester-based resin, which is a thermoplastic resin. An example of an ester-based resin is polyethylene terephthalate (PET). Ester-based resins exhibit excellent corrosion resistance against acids.

[0051] Furthermore, when the mouth portion 20 is attached to the upper film, the underside of the flange portion 21 of the mouth portion 20 is also made of a resin layer, so that the resin is attached as a single unit, and therefore the underside of the flange portion 21 of the mouth portion 20 is also made of the above-mentioned olefin-based resin or ester-based resin.

[0052] The mouth portion 20 needs to be strong enough to withstand screwing with the cap 30 described below and the spiral tube 65 of the pump heads F and G, and is therefore made of a resin such as a plastic such as polyethylene (PE), polypropylene (PP), polybutyl terephthalate (PBT), polyethylene terephthalate (PET), etc.

[0053] In the first configuration example, when the container is manufactured by the first manufacturing method or the third manufacturing method, the lower surface of the flange of the mouth portion 20 is made of an olefin-based resin or an ester-based resin.

[0054] In this case, it is preferable that the resin layer constituting the lower surface of the flange portion 21 of the mouth portion 20 and the resin layer constituting the outer surface of the upper film are made of resins having similar or the same melting temperature.

[0055] FIG. 5 is an overall explanatory view showing how the mouth portion 20 is attached to the upper film 11 in the first manufacturing method.

[0056] In the first manufacturing method, as shown in FIG. 2, after the top film and the side films are configured into a bag shape in S12, the mouth portion 20 is welded to the top film 11 in S14.

[0057] Therefore, in order to ensure that the mouth portion 20 can be successfully welded to the outside of the top film 11, in S14, a bag made of the connected top film 11 and side films 12, 13 is placed over a cylindrical receiving base (jig) 9, the top film 11 is set in a stretched state, and the mouth portion 20 is welded from above.

[0058] A specific welding method in S14 will be described with reference to FIGS.

[0059] (Ultrasonic welding) FIG. 6 is an explanatory diagram showing how the mouth portion 20 is welded to the upper film 11 by ultrasonic waves in the first manufacturing method.

[0060] As described above, the top film 11 and the side films 12, 13 are composed of a three or more layer structure having an outer surface which is the surface, and an outer resin layer 111 and an inner resin layer 113 which are resin layers on the inner surface, sandwiching the metal layer 112.

[0061] Ultrasonic welding is a processing technology that uses minute ultrasonic vibrations and pressure to instantly melt and join thermoplastic resin.

[0062] The structure of the device that performs ultrasonic welding is an ultrasonic transducer to which a horn 81, which acts as a resonator, is attached. By concentrating ultrasonic vibrations at the tips of the horns 81 and 82, a strong impact is applied to the flange 21 of the mouth part 20, which is the object to be welded.

[0063] In detail, (1) when vibration energy is generated by the ultrasonic vibrator, it is transmitted to the flange 21 of the mouth portion 20, which is a part, through the horn 81.

[0064] (2) The impact of the vibrations from the horns 81 and 82 generates very little heat on the surfaces of the parts, and most of it is transmitted to the boundary surface between the flange portion 21 and the upper film 11, which are the parts to be welded.

[0065] (3) The transmitted vibration energy generates strong frictional heat at the boundary surface, instantly raising the temperature to the melting point of the resin, causing it to be welded.

[0066] Ultrasonic welding performed in this manner has the advantages of requiring a short amount of time for welding, being easy to automate, providing high airtightness, low power consumption, high reproducibility, being easy to control, and not producing unpleasant odors.

[0067] 6, the horns 81 and 82 are funnel-shaped, but the horns may have other shapes. For example, the horns may be rectangular or cylindrical in shape surrounding the upright portion 22 of the mouth 20.

[0068] (Heat welding) FIG. 7 is an explanatory diagram showing how the mouth portion is welded to the upper film by heat from a heating element in the first manufacturing method.

[0069] The pouch bag 10 is supported by a cylindrical receiving stand (jig) 9A, and above the mouth portion 20, a cylindrical heating portion H5 is provided.

[0070] The cylindrical heating part H5 applies heat from above the flange 21, whereby the surface resin layer 111 of the upper film 11 and the resin on the lower surface 211 of the flange 21 of the mouth part 20 are melted and welded together.

[0071] As other heat-based welding methods, for example, hot air, hot plate, impulse, iron, laser, or other heat welding methods may be used to attach the mouth portion 20 to the upper film 11.

[0072] (High frequency welding) FIG. 8 is an explanatory diagram showing how the mouth portion 20 is welded to the upper film 11 by high frequency in the first manufacturing method.

[0073] High-frequency welding is a technology in which a thermoplastic resin is subjected to a strong high-frequency electric field, a type of radio wave, which causes collisions, vibrations, and friction at the molecular level inside the material, resulting in self-heating and fusing and welding the resin (especially film).

[0074] More specifically, a high-frequency mold is used as a device for high-frequency welding, and a positive electrode and a negative electrode are provided to sandwich the resin to be welded. For example, the negative electrode 92 is provided in the upper electrode base 9B. The electrodes 91 and 92 are cylindrical so as to cover the flange portion 21 from above and below.

[0075] An electric field of high-frequency energy of several tens of kHz is applied to the resin sandwiched between them from two electrodes 91, 92, causing potential movement at the atomic and molecular level, causing the flange 21 of the mouth portion 20, which is made of resin, and the surface resin layer 111 of the top film 11 to generate heat from the inside, and the parts to be melted are selectively heated and welded.

[0076] In this type of high frequency welding, only the areas to be welded are heated, so welding can be completed in a short time, there is no thermal effect on areas not to be welded, and the welded surface can be beautifully finished.

[0077] Furthermore, in any of the welding methods shown in Figs. 6 to 8, no adhesive, which is a consumable material, is used, so the cost is low and a beautiful finish can be achieved.

[0078] Furthermore, if the flange 21 of the mouth 20 and the surface resin layer 111 of the top film 11 are welded to each other, which are made of the same material, a high level of welding strength close to the strength of the base material can be achieved. Therefore, the mouth 20 of the pouch container 1 attached by such a welding method can be prevented from coming off even when the pouch container 1 is used in a hot and humid environment such as a bathroom or washroom.

[0079] (filling) FIG. 9 is an explanatory diagram showing a state in which the contents are being filled into the pouch from the rear end.

[0080] As shown in FIG. 9, the filling of the contents in S15 is carried out from the bottom, which is the open end of the pouch bag, that is, from the side of the lower ends E24, E34 of the side films 12, 13.

[0081] However, as another filling example, in the step of forming a pouch bag in S12, a portion of the side of the side films 12, 13 may be left open without being fused, and in S15, the contents may be filled through the opening of the side of the side films 12, 13 with the side facing up.

[0082] (End blockage) Figure 10 is a diagram illustrating the closing of the rear end. In Figure 10, the closing using heat and pressure is illustrated.

[0083] As described above, the side film has a three-layer structure, so that by sandwiching it between a pair of heat sealing plates (sealing bars) H6 and heating it, as shown in Figure 10, the lower ends E24, E34 of the side films 12, 13 are heat-sealed, and the pouch bag 10 is closed.

[0084] After filling as shown in FIG. 9, oxidation of the content C after filling can be prevented by blocking the bottom end in an environment of an inert gas such as argon or nitrogen that is shielded from light.

[0085] (bottom tucked in) In the flow of FIG. 2 above, the manufacturing flow ends with closing the pouch bag in S16, but a step of folding the bottom end of the pouch bag may be further included after S16.

[0086] Fig. 11 is a diagram explaining folding in the rear end. In Fig. 11, (a) is a diagram showing the pouch bag 10 turned upside down before folding in the bottom end, (b) is a diagram showing the state in which the center of the bottom end of the pouch bag 10 is pressed for folding, and (c) is a diagram showing the state after the bottom end has been folded.

[0087] By folding the bottom end welded part S of the pouch bag 10 in this manner, the pouch container 1 can be made more compact without changing the filling amount. Also, the position of the pouch container 1 can be stabilized with the mouth part 20 facing up as shown in Fig. 1. Furthermore, in a configuration in which the pouch container 1 is housed in an outer container 50 as the inner container of a double container 5 (see Figs. 32 to 35) as described below, the pouch container 1 is suitable for fitting snugly into the outer container 50.

[0088] In addition, since the folded portion will not affect the contents even if it peels off, the end portion after folding may be glued with adhesive.

[0089] <Second manufacturing method> 12 is a flow chart showing a second manufacturing method for the pouch container 1 according to the first configuration example of the present invention. Only the differences from the first manufacturing method will be explained.

[0090] In this manufacturing method, the mouth 20 is not formed in advance, but is formed by insert molding onto the upper side of the top film 11 after the top film 11 and the side films 12, 13 have been formed into a pouch bag.

[0091] FIG. 13 is an explanatory diagram showing how mouth portion 20α is attached to upper film 11 by insert molding while being integrally formed therewith in the second manufacturing method.

[0092] Insert molding is a molding method in which resin is injected around a metal part inserted into a mold to integrate the metal and resin. In more detail, in insert molding, an insert is placed in a cavity (recess) while the mold is open, and then the mold is closed to perform injection molding.

[0093] 13, with the top film 11α of the pouch bag set in a jig 94 in contact with a mold MP1, resin is injected into a cavity CT of the mold MP1 in which a hole is formed, and with a mold pin MP2 inserted, mouth portion 20α is formed. As a result, mouth portion 20 including flange portion 21 and standing portion 22 is insert molded with resin so that the underside of flange portion 21 of mouth portion 20α is in close contact with the resin layer on the surface of the top film 11α of the pouch bag.

[0094] This manufacturing method also does not use adhesives, which are consumable materials, so costs are low and the finish is beautiful.

[0095] In addition, because the mouth 20 is integrally formed on the resin layer on the surface of the upper film, which is made of the same material, the mouth 20α and the film 11α are closely attached to each other at a level close to the strength of the base material. Therefore, a pouch container with a mouth thus integrally formed by insert molding is very unlikely to have its mouth come off even when used in hot and humid conditions such as a bathroom or washroom.

[0096] Furthermore, since the resin mouth portion 20 can be formed and attached to the upper film at the same time, the welding process in the manufacturing flow can be eliminated and there is no need to provide space for welding. Instead, a mold is required to form the resin mouth portion 20 at the same time as attaching it, so it is preferable to select an appropriate manufacturing method depending on the space available in the manufacturing equipment.

[0097] <Third manufacturing method> 14 is a flow chart of a third manufacturing method for the pouch container 1 according to the first configuration example of the present invention. This manufacturing method differs from the first manufacturing method in that, in step S33, the mouth portion 2 is welded to the upper film 11 before forming the pouch into a bag shape (step S34).

[0098] FIG. 15 is an explanatory diagram showing welding of the mouth portion 2 to the upper film in the third manufacturing method.

[0099] As shown in Fig. 15(a), first, the mouth portion 20 is welded from below to the top film material f11. Details of the welding process are shown in Fig. 16. Then, the film material f11 with the mouth portion 20 attached is cut into a hexagonal shape by cutting means C1. For example, a Thomson blade corresponding to the shape of the top film 11 is provided on the underside of the cutting means C1, and the film material f11 is cut by the hexagonal Thomson blade to produce the top film 11 with the mouth portion 20 attached.

[0100] Then, the end portion of the top film 11 to which the mouth portion 20 is attached is fused to the ends of the side films 12, 13. In detail, as shown in Fig. 15(b), the top surfaces of the side films 12, 13 whose ends have been fused are opened, and the upper side film 12 is folded back by inserting a clamping plate FB.

[0101] Thereafter, while holding down the top film 11 from above with receiving bases (jigs) 901, 902 shaped like a trapezoid excluding the bottom side, the heating member H3 shaped like a trapezoid excluding the bottom side is placed underneath to heat seal the end of the lower side film 13 and the end of the top film 11. Thereafter, the side film 12 is flipped over so that it is on the bottom, and the lower side film 12 and the top film 11 are heat sealed in the same manner.

[0102] FIG. 16 is an explanatory diagram showing how the mouth portion is welded to the upper film by thermal welding in the third manufacturing method.

[0103] In the welding by the third manufacturing method, the mouth side is fixed as shown in Fig. 16. In detail, the mouth part 20 is fixed by the upper end of a cylindrical receiving jig 95 formed so as to surround the outer circumferential surface of the rising part 22 of the mouth part 20 and the upper surface of the flange part 21.

[0104] Furthermore, plate-, rod-, or roller-shaped heating parts H6 and H7 are provided on the side (above) of the inner resin layer 113 of the film f11.

[0105] With the film f11 resting on the flange 21 of the mouth portion 20 fixed by the lower receiving jig 95, heating parts H6 and H7 press the film f11 from above, or move while pressing against the upper surface, thereby heating the film f11, causing the resin of the surface resin layer 111 of the film f11 and the resin of the underside 211 of the flange 21 of the mouth portion 20 to melt and bond together.

[0106] Alternatively, the upper heating part H5 may also be cylindrical in shape so as to correspond to the part where the flange 21 of the mouth part 20 is formed. In that case, the upper heating part is composed of one part, and by applying pressure from above and heating, the surface resin layer 111 of the film f11 and the resin on the lower surface 211 of the flange 21 of the mouth part 20 are welded together.

[0107] In the third manufacturing method, the top film is not in a bag shape at the time of welding the mouth portion 20, as shown in Figures 15 and 16. Therefore, instead of using a cylindrical jig 9 that conforms to the shape of the bag as shown in Figures 4 and 5, the mouth portion 20 can be welded to the top film on a flat receiving stand or in a film state in which the film is unwound from a roll R and under tension.

[0108] In addition, Figures 15 and 16 show an example in which the top film is attached by welding the mouth portion 20 to a continuous film and then cutting the top film 11α to a specified shape and size, but the top film may also be cut into a hexagonal shape and then the mouth portion 20 may be attached.

[0109] Although not shown in the figures, when welding by heat or high frequency is performed, the mouth portion 20 may be welded by sandwiching it from above and below against a tensioned upper film as shown in Fig. 16. Alternatively, the mouth portion may be welded from above on a flat receiving stand.

[0110] In this embodiment, the mouth is attached before the film is made into a bag shape, which improves the degree of freedom when heating from the film side. However, in this embodiment, in the subsequent process of making the film into a pouch bag shape, simultaneous welding of the three edges using the general welding method shown in Figure 4 cannot be performed, and the welding of the top film and the two side films is performed in two or more steps. Therefore, it is preferable to select an appropriate manufacturing method taking into account the manufacturing equipment, etc.

[0111] Furthermore, in this manufacturing method as well as in any other welding method, adhesives, which are consumable materials, are not used, so the cost is low and the finish can be beautiful.

[0112] Furthermore, if the flange 21 of the mouth 20 and the upper film are welded to each other using the same material, a high level of strength close to that of the base material can be achieved. Therefore, a pouch container with a mouth attached using this welding method is unlikely to come off even if it is used in hot and humid conditions such as a bathroom or washroom.

[0113] <Fourth manufacturing method> 17 is a flow chart of a fourth manufacturing method for the pouch container 1 according to the first configuration example of the present invention. This manufacturing method differs from the second manufacturing method in that, in S42, before forming into a bag shape (S43), the mouth portion 20 is formed on the top film 11 by in-mold molding.

[0114] FIG. 18 is an explanatory diagram showing how the mouth portion is attached to the upper film and formed integrally therewith by in-mold molding in the fourth manufacturing method.

[0115] In-mold molding is a technique in which a pre-printed film is sandwiched inside an injection molding die.

[0116] In-mold molding involves (1) feeding a film, (2) clamping and sucking the film, (3) injection molding, and (4) removing the film to form the mold. This results in a mouth member being integrally formed on the top film.

[0117] 18, with the top film 11β sandwiched between the molds MP1 and MP3, resin is injected into the cavity CT of the mold MP1 in which a hole is formed, and the mouth portion 20β is formed with the mold pin MP2 inserted. As a result, the mouth portion 20 including the flange portion 21 and the standing portion 22 is in-mold molded with resin so that the underside of the flange portion 21 of the mouth portion 20β is in close contact with the resin layer on the surface of the top film 11β of the pouch bag.

[0118] Therefore, the mouth portion (spout, mouth portion member) 20 can be molded integrally with the upper film in parallel with the film formation, without being molded separately as a single unit.

[0119] The position of the resin injection port (gate) that penetrates the inside of the mold MP1 from the outside and reaches the cavity CT, as shown in FIG. 18, is just an example, and the resin injection port may be provided at another position.

[0120] This manufacturing method also does not use adhesives, which are consumable materials, so costs are low and the finish is beautiful.

[0121] Furthermore, because the mouth 20 is integrally formed on the resin layer on the surface of the upper film, which is made of the same material, the mouth 20 and the film are in close contact with each other at a level close to the strength of the base material. Therefore, a pouch container with a mouth thus integrally formed by in-mold molding can reduce the possibility of the mouth coming off even when used in hot and humid conditions.

[0122] Furthermore, since the resin mouth portion 20 can be formed and attached to the upper film at the same time, the welding process in the manufacturing flow can be eliminated and there is no need to provide space for welding. Instead, a mold is required to form the resin mouth portion 20 at the same time as attaching it, so it is preferable to select an appropriate manufacturing method depending on the space available in the manufacturing equipment.

[0123] (Second configuration example) FIG. 19 is a diagram showing a pouch container 1A according to a second configuration example of the present invention, exploded into two side surfaces, a top surface, and a mouth portion.

[0124] In the above first configuration example, an example was shown in which the upper surface (and lower surface) was hexagonal, but the upper surface may be substantially circular or substantially elliptical as shown in FIG.

[0125] In this case, upper end portions 12S, 13S of side films 12A, 13A, which are the second film and are fused to the edge portion of top film 11A, which is the first film, have a shape of half a semicircle or an ellipse.

[0126] (Third configuration example) FIG. 20 is an exploded view of a pouch container 1B according to a third configuration example of the present invention, showing the side, top, and mouth.

[0127] In the above first and second configuration examples, the side of the pouch bag is formed by two side films 12, 13, but the side film may be formed by a single strip-shaped film. In this configuration example, the top film 11B, which is the first film, is substantially circular.

[0128] In the process of making a pouch in this configuration, first, one end of the belt-shaped side film 14, which is the second film, is rolled and fused to the outer peripheral edge of the substantially circular top film 11B having a resin layer on its upper surface.

[0129] Thereafter, side ends E41, E42 of the rolled, band-like side film 14 that are perpendicular to the end where the top film is disposed are fused together to form a bag-like pouch.

[0130] (Fourth configuration example) Fig. 21 is an external view of a pouch-container 1C according to a fourth configuration example of the present invention. As shown in Fig. 22, the pouch-container 1C may have fold lines (folds) 125, 135 in side films 12C, 13C.

[0131] Therefore, in the pouch container 1C, the portions of the side films 12C, 13C other than the fold lines 125, 135 may be constructed to contain more plastic, such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), etc., for reinforcement purposes than the portions of the fold lines 125, 135.

[0132] In this configuration, when the pouch bag 10C shrinks, it shrinks along the fold lines 125 and 135.

[0133] (Fifth Configuration Example) FIG. 22 is an external view showing a pouch container 1D according to a fifth configuration example of the present invention.

[0134] In the above example, the pouch bag has a spout attached to the upper surface film that constitutes the upper surface of the approximately hexagonal shape, but the shape of the pouch bag is not limited to the above configuration. For example, the pouch bag may be in the shape of a horizontal prism or a cylinder.

[0135] In this configuration example, a mouth portion 20D is attached to an upper surface film 12D having a shape substantially the same as that of the side surface film 12 in the first configuration example. This configuration example has the same configuration as the configuration example except for the position where the mouth portion 20D is attached.

[0136] In this configuration example, top film 12D having a shape in which the upper side of an approximately rectangular shape and the lower base of a trapezoid are continuously formed functions as the first film, and bottom film 13D having a shape in which the upper side of an approximately rectangular shape and the lower base of a trapezoid are continuously formed, and side film 11D having a shape of an approximately hexagon function as the second film.

[0137] In this configuration example, the process of making a pouch bag S11 in Figure 2 includes a process of fusing the outer edges of three consecutive sides of the approximately hexagonal side film 11D to three ends of the trapezoid of the top film 12D, a process of fusing the approximately rectangular side of the top film 12D to an end that is a approximately rectangular side of the bottom film 13D, and a process of fusing the outer edges of the other three sides of the side film 11D to the three ends of the trapezoid of the bottom film 13D.

[0138] Then, as shown in Fig. 22, the mouth portion 20D is welded to the center of the pouch, i.e., approximately the center in the longitudinal direction of the top film 12D. When the first manufacturing method is applied to this configuration, the difference is that in the step of welding the mouth portion 20D in S14, the shape of the jig that fixes the bag-shaped film is a horizontal cylinder or prism rather than an upright cylinder so that the top film 12D15, which is the attachment surface, comes into contact with the underside of the flange portion 21D. The other manufacturing steps are almost the same.

[0139] (Other manufacturing process examples) In the above example, the rear end of the pouch container is opened to inject the liquid, but another portion may be used as the injection portion.

[0140] For example, in step S11 of the flow in Fig. 2, one end (side end) of the side film may not be bonded, and may be used as an injection port for injecting the contents. In this case, the side end that is not used for injection and the bottom end are heat-sealed in advance in step S11 to form a bag shape composed of the top and side surfaces.

[0141] (Modification) Furthermore, in the above first to fifth configuration examples, the lower ends of the side films in the pouch bag 10 are fused together as the lower end fusion section S (without a gusset) as shown in Fig. 10, but the pouch container according to the present invention may be a gusset pouch having a lower surface (lower gusset portion). When a lower surface is provided, the shape of the lower surface film is the same as that of the upper surface film.

[0142] Furthermore, by providing the gusset portion, the pouch bag can be maintained in an upright position with the mouth facing up, even without folding back the bottom end as shown in FIG.

[0143] Alternatively, for example, in the first configuration example or the second configuration example, a side film may be provided between the two side films, and an additional side gusset may be provided to increase the depth of the side surface.

[0144] (Sixth configuration example: 4-sided seal) In the above configuration example, the first film and the second film are stretched in different directions, but in the pouch bag of the present invention, the first film and the second film may be arranged to face each other.

[0145] Specifically, Fig. 24 is an explanatory diagram of a pouch container 1E according to a fifth configuration example, in which (a) is an external perspective view of the pouch container 1E, and (b) is a cross-sectional view of the X section of (a).

[0146] In this configuration example, the first film is upper film 15, and the second film is lower film 16. Four sides (E51 to E54) of upper film 15 and four sides (not shown) of lower film 16 are welded by heat sealing.

[0147] In this configuration example, since the upper film 15 and the lower film 16 are welded facing each other, it is preferable to weld the opening while the film is in the film state before welding the upper film 15 and the lower film 16 to form a bag, as in the flow of Fig. 12. Alternatively, it is preferable to insert-mold the opening while the film is in the film state, as shown in Figs. 17 and 18.

[0148] In Figure 24, an example of a pouch container consisting of two films, an upper and lower, is described as being approximately rectangular in shape, but the shapes of the two films, upper and lower, may be other quadrilateral shapes (e.g., trapezoid, diamond, etc.), circles, ellipses, or other polygonal shapes.

[0149] In either case, before filling, one side (or part of the arc) is left unfilled, and the other sides (for example, three sides (E51, E52, E54) in FIG. 24) are heat-sealed, and after filling, the remaining side (E53) is heat-sealed.

[0150] In this example, the upper film and the lower film are arranged facing each other vertically, so that the pouch container can maintain an upright state even without folds or other support members.

[0151] Although it is shown in a simplified manner in Fig. 24(b), in this configuration as well, the upper film and the lower film include at least an air barrier layer containing a metal or inorganic substance, and an outer resin layer and an inner resin layer that sandwich the air barrier layer, as shown in Fig. 16. This makes it possible to prevent oxidation of the content C after filling.

[0152] (7th Configuration Example: Pouch bag made of one sheet (sealed on three sides)) In the above first to sixth configuration examples, examples in which a pouch bag is formed using a plurality of films have been described, but a pouch bag may also be formed by folding a single film.

[0153] Fig. 24 is an external view showing a pouch container 1F according to a sixth configuration example of the present invention, and Fig. 25 is an explanatory diagram of the production of the pouch container 1F according to the sixth configuration example of the present invention.

[0154] In this configuration example, the film 17 to which the mouth portion 20F is welded is folded to become a substantially rectangular bag-shaped film that constitutes an upper surface and a lower surface.

[0155] In addition, Figure 24 shows an example in which the top surface of film 17 is rectangular, but as long as the sides are at the fold lines and the shape is symmetrical from top to bottom, it may be a trapezoid, hexagon, octagon, or other even-numbered approximate polygon.

[0156] Here, an example of a manufacturing process for the pouch container 1F of the sixth configuration example is shown in Fig. 25. First, the mouth portion 20F is welded at regular intervals to the sheet before cutting. The welding method is as shown in Fig. 16 above.

[0157] Then, as shown in Fig. 25(b), the film f18 is folded and two adjacent sides E71, E73 are heat sealed, and the contents are then filled. When filling the contents, an inert gas is injected while filling the contents, or an inert gas is injected immediately after filling the contents. This prevents the contents from being caught in the sealed portion during heat sealing for sealing, and also prevents air from entering the pouch container when filling the contents.

[0158] Then, the remaining side E74, which is the filling port, is heat-sealed. At this time, the side E74 at the downstream end of the upstream pouch container and the side E73 at the upstream end of the downstream pouch bag are heat-sealed at the same time. Then, after the three sides are heat-sealed, each pouch bag is cut in the center of the heat-sealed area as shown by the dotted lines in Figure 25(b).

[0159] This allows the manufacturing process to be made more efficient, as the process of folding, heat sealing to make a pouch, filling, sealing, and cutting can all be done in a single process.

[0160] Although it is shown in a simplified manner in Fig. 24(b), in this configuration too, one film includes at least an air barrier layer containing a metal or inorganic substance, and an outer resin layer and an inner resin layer that sandwich the air barrier layer, as shown in Fig. 16. This makes it possible to prevent oxidation of the content C after filling.

[0161] (8th configuration example: pillow shape) Although Fig. 24 shows an example in which one sheet is heat-sealed at its side edge, a pillow-shaped sheet may also be used in which the back side of the sheet is heat-sealed. Fig. 26 shows a pouch container 1G according to an eighth configuration example.

[0162] In that case, after the back side is heat sealed, the sheet is rotated and folded, one end is sealed and filled, and then filled.

[0163] In addition, in this configuration, as shown in FIG. 26, by performing heat sealing immediately after injecting an inert gas such as argon or nitrogen immediately after filling the contents, oxidation of the contents can be prevented even when filling and sealing the bottom end.

[0164] <Application example 1: Combination with a cap> 27 is a diagram showing a pouch container 1H having a similar structure to the pouch container 1C of the fourth embodiment of the present invention combined with a cap 3 that is opened by rotation. Since the opening is provided with a helical protrusion as described above, a cap that is screwed into the opening may be provided.

[0165] The structure of the cap will be described with reference to Figures 28 and 29. Figure 28 is an exploded view of the vicinity of the cap in Figure 27. Figure 29 is a half cross-sectional explanatory view of the cap and the pouch container mouth. The pouch container 1H of the present invention combined with the cap 3 forms a capped container 4.

[0166] In a pouch container 1H according to an application example of the present invention, a spiral projection 23 is formed on the outer periphery of an upright portion 22 of a mouth portion 20H. In addition, a rotation stopper 24 is provided below the spiral projection 23 of the upright portion 22.

[0167] In detail, the cap 3 has a lower cap 31, an upper cap 32, an inner plug 33, and an O-ring 34. A stopper ring 39 is provided under the cap 3 before use.

[0168] The lower cap 31 is configured to include a side wall 311, a breakthrough plug 313, an annular connecting portion 314, and an upper end protrusion 315. The side wall 311 is an outer tube with a spiral groove 312 formed on its inner peripheral surface. The breakthrough plug 313 is a tubular plug portion whose outer periphery is thinner than the inner periphery of the standing portion 22 of the pouch container 1H. The annular connecting portion 314 is an example of a connecting portion, and connects the upper end of the breakthrough plug 313 and the upper end of the side wall. The upper end protrusion 315 has an upper end protrusion 315 that stands up from the upper surface of the annular connecting portion 314.

[0169] The upper cap 32 has a top plate 321 and a two-stage side wall 322. The lower cap 31 and the upper cap 32 are engaged with each other with the upper end protrusion 315 of the lower cap 31 sandwiched between the inner surface of the two-stage side wall 322 and the inside plug 33.

[0170] As shown in FIG. 29, when the stopper ring 39 is attached under the cap, the breakthrough plug 313 does not reach the upper film 11, and the upper film 11 is not punctured.

[0171] Then, immediately before use, the stopper ring 39 is removed and the cap 3 is rotated relative to the standing portion 22, causing the breakthrough plug 313 to descend and perforate the central region of the top film 11. The central region refers to the region of the top film 11 that is the center inside the standing portion 22 after the mouth portion 20H is attached to the pouch bag 10H and that is exposed relative to the cap 3.

[0172] The internal behavior during use and when the cap is rotated will be described with reference to Figures 30 and 31. Figure 30 is a diagram for explaining the procedure for opening the cap in Figure 27.

[0173] First, hold the knob of the stopper ring 39 and tear it off in the direction of the arrow in Figure 30(a). The removed stopper ring 39 can be disposed of.

[0174] Turn the stopper in the direction of the arrow in Figure 30(b) to close it tightly. By tightening it tightly until the stopper at the end of the screw can no longer be seen, the top film 11 will be perforated, allowing the contents to come out.

[0175] Fig. 31 is an explanatory diagram of the rotation performed in Fig. 30(b). In Fig. 30, (a) is an enlarged view of the lower end of the breakthrough plug 313, (b) shows the central region (see Fig. 27) of the circular upper surface film 11, and (c) is a view of the upper surface film 11 from the mouth portion 20H side with the cap removed.

[0176] 31(a), breakthrough plug 313 has an oblique cylindrical shape with an inclined lower end. The area that comes into contact with top film 11 during puncturing is designated as inclined lower end 313L.

[0177] Before rotation, the top film 11 and the breakthrough plug 313 of the cap 3 are not in contact with each other (see FIG. 27).

[0178] When the cap 3 is rotated, the breakthrough plug 313 descends and the lower end of the inclined lower end portion 313L comes into contact with the upper film 11 as shown by the solid line in FIG. 31(a), and then the upper film 11 begins to penetrate vertically.

[0179] As the rotation of the cap 3 continues, the breakthrough plug 313 descends, cutting out an arc-shaped portion of the top film 11. At this time, only the inclined lower end 313L of the breakthrough plug 313 is in contact with the top film 11 and is able to break through the top film 11 little by little.

[0180] As shown by the dotted line in Figure 31(a) and in Figure 31(c), even when cap 3 is rotated to the bottom end, the arc-shaped cutout portion is not cut over the entire 360° circumference, and part of it remains connected.

[0181] The rotation angle for cutting off the top film is determined by the height of the anti-rotation stopper 24 that faces the stopper ring 39 that was engaged before use. The rotation angle of the cap 3 for puncturing, determined by the anti-rotation stopper 24, is preferably set to an angle at which the contents flow smoothly and at which some of the contents remain even when rotated to the maximum extent.

[0182] Since the cap 3 breaks through the top film 11 of the pouch container 1H just before use, the pouch container 1H can be kept sealed during the distribution process. In other words, air can be prevented from entering the pouch bag 10H, which is the pouch body, until just before use, so the properties of the contents are hardly changed until use.

[0183] <Application Example 2: Refillable containers> 32 is an explanatory diagram showing a state in which the pouch container of the present invention is used as a refill container. The pouch container 1I of the present invention can also be used as a refill container.

[0184] 32, when the pouch container 1I is used for refilling, a piercing member like the inner plug of the cap described above is provided on the refilling aid 8, and the refilling aid 8 is engaged with the pouch container 1I to pierce the top film 11 at the back of the mouth portion 20I of the pouch container 1I. Then, the contents stored in the pouch container 1I are transferred to the refilling bottle 6 via the refilling aid 8.

[0185] 32 shows an example in which a pouch container 1I similar to the pouch container 1C of the fourth configuration example in which the hardness of the bag portion is reinforced is used as a refill container, but since the refill container is discarded after refilling, there is no need to maintain the upright state thereafter. Therefore, the pouch containers 1, 1A, 1B, 1D, 1E, 1F, and 1G configurations in which the hardness is not reinforced can also be used as refill containers.

[0186] <Application example 3: Double container (double container with discharge mechanism)> Next, the double container having the pouch container of the present invention will be described with reference to Figs.

[0187] Fig. 33 is an exploded view of a double container 5 equipped with a pouch container 1J having a similar structure to the pouch container 1C according to the fourth configuration example of the present invention as an inner container. Fig. 33 shows a state in which the pump head F and the cap 30 are engaged with each other.

[0188] Fig. 34 is a diagram showing an example in which a pump head F is attached to the mouth portion 20J of a pouch container 1J and an outer container 50 of the present invention. Fig. 35 is an exploded cross-sectional view of the pump head F.

[0189] The pump head F is a dish-shaped, upward-discharge type, airless discharge mechanism. The pump head F can discharge the contents upward using a pump while maintaining an airtight state.

[0190] In detail, the pump head F has a cylinder portion 60, a pump portion 70, and a cylindrical cover 80. The cylindrical cover 80 is a member that is placed over the cylinder portion 60 and attached to the outer container 50, and a cap 30 is engaged with the outside. The cylinder portion 60 is a member that fits into the mouth portion 20J of the pouch container 1J. The pump portion 70, together with a part of the cylinder portion 60, is a member that realizes part of the discharge function of the airless characteristic. The pump head F will be described in detail with reference to FIG. 35.

[0191] The outer container 50 is a cylindrical container with a bottom in which the pouch container 1J is housed. The outer container 50 has a bottom surface 51 and a side wall 52. The upper end of the side wall 52 is recessed both on the outside and inside, and an outer peripheral screw protrusion 54 is provided on the outer peripheral surface of the upper end thin-walled portion 53.

[0192] The inner recess of the upper thin portion 53 is a portion into which the lower peripheral wall 623 of the cylinder portion 60 fits.

[0193] Furthermore, a cap 30 may be provided removably to cover the pump portion 70 of the pump head F. When the cap 30 is attached, the outer peripheral screw projections 86 provided on the cylindrical cover 80 are threadedly engaged with the inner surface of the side wall 37 of the cap 30.

[0194] In this configuration, immediately before use, the upright portion 22 of the mouth portion 20J is aligned with and fitted into the spiral tube 65 hanging down from the lower cylinder portion 60 of the pump head F, which is the discharge mechanism, and the cylinder portion 60 is rotated relative to the mouth portion 20J, causing the breakthrough tube 66 to pierce the upper film 11.

[0195] In this configuration, when the pump head F is an airless discharge mechanism, an airtight state is maintained for the mouth portion 20J, so that when the contents contained in the pouch bag 10J of the pouch container 1J become reduced, the pouch bag 10J shrinks, but the shape of the outer container 50 does not change.

[0196] In addition, in this configuration, by making part or all of the outer container 50 transparent, it becomes possible to check from the outside how the pouch bag 10 shrinks in accordance with the remaining amount of content while maintaining the sealed state, and the remaining amount of content can be confirmed at a glance.

[0197] In addition, in Figure 33, an example of the outer shape of the outer container 50 is shown as being circular, but as long as the outer container 50 is capable of accommodating the pouch container 1J and can fit into the cylinder portion 60, the shape of the side wall 52 other than the upper end may be any shape, such as a rectangular tube, a cone, a gourd, an egg, etc.

[0198] In the double container 5 shown in Figures 33 and 34, the pouch container having a pouch bag and a mouth is detachably attached to the outer container 50. In this way, when the pouch bag 10J of the pouch container 1J becomes empty or the contents in the pouch bag 10J become low, the pouch container 1J can be replaced with a new pouch container filled with the contents. Then, the outer container 50, the pump head F, and the cap 30 can continue to be used.

[0199] 33 shows an example in which a pouch container 1J similar to the pouch container 1C of the fourth configuration example in which the hardness of the bag portion is reinforced is used as the inner container, but in the double container 5, since an outer container exists outside the inner container, the inner container does not need to maintain an upright state. Therefore, the configurations of pouch containers 1, 1A, 1B, 1D, 1E, 1F, and 1G in which the hardness is not reinforced can also be used as the inner container of the double container.

[0200] (Pump head configuration) Next, the configuration of the pump head F will be described with reference to Fig. 35. As shown in Fig. 35, the pump head F includes a cylinder portion 60, a pump portion 70, and a cylindrical cover 80.

[0201] The cylinder portion 60 is a case portion that supports the pump portion 70 at the upper side, and a fitting portion that fits with the mouth portion 20J of the pouch container 1J at the lower side. In detail, the cylinder portion 60 has a bottom wall 61, a peripheral wall 62, a cylinder tube 63, a middle tube 64, a spiral tube 65, and a breakthrough tube 66.

[0202] In the cylinder section 60, the upper side of the bottom wall 61 is a case section that supports the pump section 70, and the case section has a triple-cylinder structure in which, from the outside, a peripheral wall 62, an intermediate tube 64, and a cylinder tube 63 rise upwardly concentrically from an upper surface 611 of the bottom wall 61.

[0203] Moreover, inside the cylinder 63, an annular connecting portion 67 is provided as the bottom surface of the cylinder 63, connecting the upper end of the spiral cylinder 65 and the upper end of the breakthrough cylinder 66. Moreover, the annular connecting portion 67 is formed with a suction hole 68 that opens continuously from the inner peripheral surface of the breakthrough cylinder 66.

[0204] An outwardly rising flange 621 is provided on the outer surface of the peripheral wall 62, with the upper side of the flange 621 forming the upper peripheral wall 622 and the lower side forming the lower peripheral wall 623. When the pump head F is assembled, the upper peripheral wall 622 of the cylinder portion 60 is fitted into an annular groove between the upper peripheral wall 82 and the hanging wall 84 of the cylindrical cover 80. Then, when the pump head F is attached to the outer container 50 in an assembled state, the lower peripheral wall 623 is located inside the upper end thin-wall portion 53.

[0205] The lower side of the cylinder portion 60 has a double-cylinder structure in which, in descending order of size, a spiral cylinder 65 and a breakthrough cylinder 66 hang down concentrically from the lower surface 612 of the bottom wall 61. The spiral cylinder 65 has a female thread structure with a spiral groove 651 formed on the inner surface. The breakthrough cylinder 66 is an example of a breakthrough plug, with a slanted end 661 at its lower end.

[0206] When the pouch container 1J is attached to the cylinder part 60, the standing part 22 of the mouth part 20J enters into the annular recess between the spiral tube 65 and the breakthrough tube 66, and the spiral protrusion 23 on the outer surface of the standing part 22 screws into the spiral groove 651 of the spiral tube 65. Then, as the pouch container 1J rotates relative to the cylinder part 60 while the spiral tube 65 screws into the standing part 22, the inclined end 661 of the breakthrough tube 66 reaches the top film 11 of the pouch container 1J and perforates the top film 11.

[0207] In addition, after the pouch container 1J is attached to the cylinder portion 60 and the assembly of the double container is completed, during use, the breakthrough tube 66 becomes an intake tube whose inner hollow portion becomes a flow path for sucking up the contents inside the pouch bag 10J.

[0208] The pump section 70 has a lifting head 71 , a piston guide 72 , a piston retainer 73 , a piston 74 , a spring 75 , a lower valve body 76 , and a mouth valve body 77 .

[0209] When not pressed, the lower valve body 76 is separated from the other members and attached to the inside of the cylinder tube 63 of the cylinder portion 60 , above the annular connecting portion 67 and the suction hole 68 .

[0210] The pump section 70 is a member that, when pressed by a user, sucks up and discharges the contents while maintaining an airtight state. When the top surface of the lift head 71 of the pump section 70 is pressed, the lift head 71, piston guide 72, and mouth valve body 77 all descend together, the piston 74 descends less than the lift head 71, the piston retainer 73 and lower valve body 76 do not change position, and the spring 75 contracts.

[0211] More specifically, the lift head 71 has a pressing top surface 711 and an outer wall 712. An opening 713 is formed in the center of the pressing top surface 711, which is the button portion, and a mouth valve body 77 is fitted into it. In addition, a lower end annular protrusion 714 is provided at the lower end of the outer wall 712. When the pump head F is in an assembled state and no pressure is being applied from above, the lower end annular protrusion 714 abuts against the lower end of the side wall 81 of the cylindrical cover 80, thereby defining the upper end position of the lift head 71.

[0212] The piston retainer 73 is a member that retains the piston 74 to prevent it from slipping out.

[0213] The piston guide 72 is a cylindrical member that guides the piston 74 and is arranged so as to come into contact with the lower end of the mouth valve body 77. A horizontal hole 721 that serves as an inlet hole is formed in part of the cylindrical surface.

[0214] The piston 74 is an example of a valve body, and can slide independently along the inner surface of the cylinder tube 63 of the cylinder portion 60 .

[0215] The lower valve body 76 is disposed on the inner lower surface of the cylinder tube 63 of the cylinder portion 60, and is a three-point valve or the like that opens only when the contents are aspirated.

[0216] The mouth valve body 77 is a valve body (check valve) that opens the hole only when the lift head 71 is pressed in.

[0217] The piston 74, the lower valve body 76, and the mouth valve body 77 are formed of an elastic material such as rubber, or a soft material such as an elastomer.

[0218] During the period when the lift head 71 is pushed in (when discharging the contents), the piston 74 maintains its position for a while due to the resistance against the inner surface of the cylinder 63, and then slides downward when the lower end of the hanging tube around the opening 713 comes into contact with the rear end (upper end) of the piston 74. While the piston 74 maintains its position against the cylinder 63 due to the resistance of the piston 74, the piston guide 72 descends together with the lift head 71, so that the position of the horizontal hole 721 of the piston guide 72 becomes lower than the lower end of the inner surface 741 of the piston 74, and the horizontal hole 721 that was closed by the piston 74 opens, and the contents enter the hollow part of the piston guide 72. Then, the contents that entered the piston guide 72 are discharged by the amount that entered the piston guide 72.

[0219] On the other hand, when the lift head 71 returns to its initial state (when the contents are being sucked), the piston 74 slides upward along the cylinder 63 together with the piston guide 72.

[0220] In this way, the pump head F of this configuration has three valve bodies that open at different times only when in use, resulting in an airless discharge mechanism that can maintain an airtight state. Also, since only the maximum amount of fluid discharged per push is the amount inside the piston guide 72, overdischarge can be prevented.

[0221] The material of the pump head F other than the valve body and spring may be any material that can withstand the discharge operation and the operation of the check valve, since the contents pass through the inside of the pump section 70 only during use.

[0222] Cylindrical cover 80 is a generally cylindrical cover provided on the outermost side of pump head F, as shown in Figure 34. Cylindrical cover 80 has a lower peripheral wall 81 with a large diameter, an upper peripheral wall 82 with a smaller diameter than lower peripheral wall 81, an upper end ring 83 that extends inwardly in an annular shape from the upper end of upper peripheral wall 82, and a hanging wall 84 that hangs down downward from the inner circumferential edge of upper end ring 83.

[0223] The upper part of the cylindrical cover 80 has a double-cylinder structure formed by an upper peripheral wall 82 and a depending wall 84, and when the pump head F is assembled, the upper end of the upper peripheral wall 622 of the cylinder portion 60 is inserted into the annular groove between the upper peripheral wall 82 and the depending wall 84.

[0224] Furthermore, an inner peripheral surface of the lower peripheral wall 81 of the cylindrical cover 80 is provided with an inner peripheral screw projection 85 for engaging with the outer container 50. An outer peripheral surface of the upper peripheral wall 82 is provided with an outer peripheral screw projection 86 for engaging with the cap 30.

[0225] It is more preferable that the pump head F is made of a material having excellent air-blocking properties, such as plastic containing a metal layer or an inorganic layer, so that air does not enter the pouch bag 10 through the pump head F. This makes it possible to prevent the state of the contents from changing even after the top film 11 is punctured.

[0226] In this configuration, the pump head F, which is an airless discharge mechanism, is attached to the mouth portion 20J in the manufacturing process before shipping. Therefore, the contents inside the pouch 10 are kept from coming into contact with oxygen as much as possible, and are kept in a state where there is little denaturation due to oxidation until the time of discharge.

[0227] In this configuration, since it is assumed that the contents will remain on the pressing top surface 711, which is the flat dish-shaped discharge surface, it is preferable to store as the contents a highly viscous liquid (fluid) such as cosmetics (basic cosmetics, base makeup cosmetics, point makeup cosmetics), solid perfumes, seasonings, etc., which have a predetermined viscosity.

[0228] <Application Example 4: Installation of a discharge mechanism (pump head with tray)> Fig. 36 is an exploded view of a double container 5K equipped with a pump head with a tray and a pouch container 1K having a shape substantially the same as that of 1C according to the fifth configuration example of the present invention. Fig. 36 is an external view, and only the lower part of the cylinder mechanism 60K is shown in perspective. The cylinder mechanism 60K in this configuration example is a member that realizes the functions of the cylinder part 60 and the cylindrical cover 80 in Fig. 35 in a single member.

[0229] The pump head G with a tray shown in Fig. 36 is a modified version of the pump head shown in Fig. 34, and is equipped with a tray pump head G, the rise and fall of which can be visually observed from the outside, as a discharge mechanism with airless characteristics having a pump suction configuration. In other words, in the configuration of Fig. 36, the lower part of the pressing top surface 71K extends like a stem, compared to Fig. 34.

[0230] In this configuration, a cover 301 with a hinge 302 is attached to a part of the cylinder mechanism 60K of the pump G so as to be able to open and close, and the cover 301 can cover the upper part of the pressing top surface 71K which serves as a tray.

[0231] In this example, since the cylinder mechanism 60K is integrated with the lid 301, the cylinder mechanism 60K may have a structure in which the cylinder mechanism 60K covers the outer container 50K from the outside. In the example shown in Fig. 36, the outer container 50K does not have a thin upper end portion, and the inner peripheral protrusion 691 provided at the lower end of the side wall 79 of the cylinder mechanism 60K rides up and fits into the annular protrusion 56 formed on the outer periphery around the upper end of the side wall 52, thereby allowing the cylinder mechanism 60K and the outer container 50K to engage with each other.

[0232] In addition, in this configuration, the pressing top surface 71K, which serves as a tray, is recessed, so that low-viscosity contents can remain on the pressing top surface 71K. For example, this configuration is suitable for use by soaking the dispensed contents into a sponge, puff, cotton, tissue, kitchen paper, etc.

[0233] In this configuration, a pump head G with a tray, which is an airless discharge mechanism, is attached to the mouth 20K of the pouch container 1K during the manufacturing process before shipping. This keeps the contents inside the pouch 10K from coming into contact with oxygen as much as possible, and keeps them in a state where there is little denaturation due to oxidation until the time of discharge.

[0234] The pump head G with tray shown in Fig. 36 is also provided with a check valve function similar to that of Fig. 35. Therefore, even if the container is opened, partially used, and then left for a while, air does not flow in, so the properties of the contents (contents) do not change much. Furthermore, in Fig. 36, even when the pump of the pump head G with tray is driven to perform the discharge operation, air can be prevented from flowing in to the pouch bag 10K. Therefore, the properties of the contents do not change much even when the container is used.

[0235] As shown in Figures 33 to 36, in the double containers 5, 5K of the above-mentioned multiple embodiments, the pouch container is formed of an airtight, non-light-transmitting material, and is therefore suitable for containing liquids that do not tolerate light transmission and contact with oxygen.

[0236] When the contained liquid is discharged for use, the pouch bag of the pouch container undergoes plastic deformation, and when the liquid in the pouch bag runs out, it shrinks and becomes thin and flat in the vertical direction, so that even if only a small amount remains, there is no need to remove the pouch container from the outer container and further compress it.

[0237] <Application Example 5: Installation of a dispensing mechanism (horizontal dispensing dispenser)> Fig. 37 shows an example in which an airless pump (dispenser) is attached as a discharge mechanism to the mouth of the double container of the present invention. Fig. 37 is an exploded perspective view of a double container 5L equipped with a dispenser D and equipped with a pouch container 1L having substantially the same shape as the pouch container 1 according to the first configuration example of the present invention as an inner container.

[0238] Dispenser D shown in Fig. 37 is an example of a discharge mechanism having airless characteristics of a lateral discharge type. Dispenser D has an airless pump 70L and a cylinder mechanism 60L. Airless pump 70L has a head 701 having a discharge port 702, and a retaining tube 703 that movably holds head 701. Retaining tube 703 is connected to cylinder mechanism 60L, and break-through tube 66 is formed in cylinder mechanism 60L.

[0239] When the dispenser 7L is attached to the mouth 20L of the pouch container 1L, the break-through tube 66 is pierced to break the top film 11. Although not shown in Fig. 37, a spiral tube as shown in Fig. 35 is formed around the break-through tube 66, and when engaging with the pouch container 1L, the spiral tube is screwed into the mouth 20L.

[0240] Here, when the head 701 of the dispenser D is pressed down, the inside of the pouch bag 10L is sucked, and the side surface of the pouch bag 10L contracts with the reduced pressure of the pouch bag 10L, and the volume of the pouch bag 10L decreases. As a result, the contents move to the dispenser L, and a predetermined amount of the contents is discharged to the outside.

[0241] Further, in order to maintain airtightness, the airless pump 70L is provided with an annular packing, a suction valve for opening and closing, and a discharge valve, although these are not shown in the figure.

[0242] As a result, even after the piercing tube 66 pierces the upper film 11, almost no air flows into the dispenser D, so that the contents inside the pouch bag 10L are kept from coming into contact with oxygen as much as possible, and the contents can be maintained in a state where there is little denaturation due to oxidation until the time of discharge.

[0243] When the dispenser D is engaged with the outer container 50L, the screw projection 55 of the upper thin portion 53L of the outer container 50L and the screw projection (not shown) on the side surface of the cylinder mechanism 60L are engaged with each other to be screwed together.

[0244] Furthermore, a cap 30L may be placed on top of the dispenser D. In this case, the side surface of the cap 30L fits into the outside of the retaining tube 703 and stops at the upper end of the cylinder mechanism 60L. Note that, although this example shows a shape in which the cap 30L can cover only the airless pump 70L of the dispenser D, the cap 30L may also be shaped to cover the cylinder mechanism 60L as well.

[0245] In addition, in this configuration, the pouch bag 10L, which is the container body, shrinks according to the remaining amount of content while maintaining a sealed state, so that the remaining amount of content can be confirmed at a glance by checking the shrinkage state of the pouch bag 10L from outside the outer container 50L, which is partially or completely transparent.

[0246] For example, the container is suitable for use as a container for multiple uses of low-viscosity liquids that require airtightness, such as seasoning containers, seasoning tubes, mini travel bottles for cosmetics and sanitary products, retort foods, beverage pouches, and other fluid packaging.

[0247] In addition, in this configuration, by adjusting the diameter of the discharge port 702 of the airless pump 70L shown in FIG. 37 and the type of piston provided therein, the contents can be ejected in a spray form.

[0248] As a result, even in this configuration, the contents do not deteriorate from the opening portion during distribution, and no great force is required when using the contents to the last drop.

[0249] Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the specific embodiments described above, and various modifications and variations are possible within the scope of the gist of the present invention described in the claims. [Explanation of symbols]

[0250] 1, 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L pouch container 10, 10A, 10B, 10C, 10D, 10E, 10F, 10G, 10H, 10I, 10J, 10K, 10L pouch bag 11, 11A, 11α, 11β Top film (first film) 111,111α,111β resin layer (outer resin layer) 112 Metal layer (air barrier layer) 113 Resin layer (inner resin layer) 12, 12A, 13, 13A Side film (second film) 121,131 Resin layer (outer resin layer) 122,132 Metal layer (air barrier layer) 123,133 Resin layer (inner resin layer) 14 Side film (second film) 15 Top film (first film) 16 Bottom film (second film) 17 Side film (second film) 18 First side film (first film) 19 Second side film (second film) 20,20A,20B,20C,20D,20E,20F,20G,20H,20I,20J,20K,20L Mouth (spout, mouth part) 21 Flange 22 Standing part 23 Spiral protrusion 24 Anti-rotation 3 Cap 30,30L Cap 31 Lower Cap 311 Side wall 312 Spiral groove 313 Breakthrough plug 32 Top Cap 33 Inner stopper 34 O-ring 39 Stopper ring 4 Containers with caps 5,5K,5L Double container (double container with discharge mechanism) 50,50K,50L outer container 60 Cylinder section 60K,60L Cylinder mechanism 65 Spiral tube 66 Breakthrough Cylinder 70 Pump section F Pump head (discharge mechanism) G Pump head with tray (mechanism) D. Dispenser

Claims

1. a step of fusing a resin layer on the inside of an end portion of the first film and a resin layer on the inside of an end portion of one or more second films to form a pouch bag having an opening at one end; A step of molding a resin mouth member having a flange portion and an upright portion; a step of attaching a lower surface of the resin flange of the mouth member to an outer resin layer of the first film of the pouch bag by welding the resin integrally by any one of ultrasonic, heat, and high frequency welding; filling the pouch with contents through one open end; and a step of sealing the one end to close the pouch bag and seal the inside. A method for manufacturing a pouch container.

2. a step of fusing a resin layer on the inside of an end portion of the first film and a resin layer on the inside of an end portion of one or more second films to form a pouch bag having an opening at one end; A step of insert-molding a mouth member having a flange and a standing portion with a resin so that a lower surface of the flange of the mouth member is in close contact with a resin layer on the outside of the first film of the pouch bag; filling the pouch with contents through one open end; and a step of sealing the one end to close the pouch bag and seal the inside. A method for manufacturing a pouch container.

3. A step of molding a resin mouth member having a flange portion and an upright portion; a step of attaching a lower surface of the resin flange of the mouth member to an outer resin layer of the first film by welding the resin integrally by any one of ultrasonic, heat, and high frequency; a step of fusing a resin layer on the inside of an end portion of the first film and a resin layer on the inside of an end portion of one or more second films to form a pouch bag having an opening at one end; filling the pouch with contents through one open end; and a step of sealing the one end to close the pouch bag and seal the inside. A method for manufacturing a pouch container.

4. a step of in-mold molding a mouth member having a flange and a standing portion with a resin so that a lower surface of the flange of the mouth member is in close contact with a resin layer on the outer side of the first film; a step of fusing a resin layer on the inside of an end portion of the first film and a resin layer on the inside of an end portion of one or more second films to form a pouch bag having an opening at one end; filling the pouch with contents through one open end; and a step of sealing the one end to close the pouch bag and seal the inside. A method for manufacturing a pouch container.

5. the first film is a generally hexagonal top film; The second film is a pair of side films each having a shape in which the upper side of a substantially rectangular shape and the lower side of a trapezoid are continuously formed, The process of forming the pouch bag includes: A process of fusing the outer edges of three continuous sides of the approximately hexagonal top film to three ends of one of the side films, which are the upper base and legs of the trapezoid; A step of fusing a substantially rectangular side edge of one side film and an end portion of a substantially rectangular side edge of the other side film; and and fusing the outer edges of the other three sides of the approximately hexagonal top film to the three ends of the other side film, which are the upper base and legs of the trapezoid. A method for producing the pouch container according to any one of claims 1 to 4.

6. The one end of the pouch is fused to close the pouch to seal the inside, and then The apexes of the lower ends of the two side films are folded and glued together. A method for producing the pouch container according to claim 5.

7. the first film is a generally circular top film; the second film is a strip-shaped side film, The process of forming the pouch bag includes: A process of rolling and fusing one end of a belt-shaped side film to an outer peripheral edge of a substantially circular top film having a resin layer on its upper surface; and and fusing the side edges of the rolled belt-like side film perpendicular to the end where the top film is disposed. A method for producing the pouch container according to any one of claims 1 to 4.

8. The first film is a top film having a shape in which the top side of a substantially rectangular shape and the bottom side of a trapezoid are continuously formed, The second film is a substantially hexagonal side film and a bottom film having a shape in which the top side of a substantially rectangular shape and the bottom base of a trapezoid are continuously formed, The process of forming the pouch bag includes: a step of fusing the outer edges of three continuous sides of the approximately hexagonal side film to three ends of the upper film, which are the upper base and legs of the trapezoid; A step of fusing a side edge of the substantially rectangular shape of the upper film and an end portion of the substantially rectangular shape of the lower film; and and fusing the outer edges of the other three sides of the approximately hexagonal side film to the three ends of the bottom film, which are the upper base and legs of the trapezoid. A method for producing the pouch container according to any one of claims 1 to 4.

9. a step of folding and fusing an inner resin layer of an end of a sheet of film to form a pouch having an opening at one end; A step of molding a resin mouth member having a flange portion and an upright portion; a step of attaching a lower surface of the resin flange of the mouth member to an outer resin layer of the film of the pouch bag by welding the resin integrally by any one of ultrasonic, heat, and high frequency welding; filling the pouch with contents through one open end; and a step of sealing the one end to close the pouch bag and seal the inside. A method for manufacturing a pouch container.

10. A spiral projection is formed on the outer circumferential surface of the upright portion of the mouth member. A method for producing the pouch container according to any one of claims 1 to 4.

11. A step of forming a first film including an air barrier layer including a metal or an inorganic substance, and an outer resin layer and an inner resin layer sandwiching the air barrier layer; forming a second film including an air barrier layer containing a metal or inorganic material and a resin layer on the inner side of the air barrier layer. A method for producing the pouch container according to any one of claims 1 to 4.

12. The lower surface of the flange of the mouth member and the outer resin layer of the film to which the mouth member is attached are made of thermoplastic olefin or PET resin. The method for producing the pouch container according to claim 11.

13. The metal contained in the air barrier layer is aluminum. The method for producing the pouch container according to claim 11.

14. The air barrier layer containing an inorganic material is a resin film layer on which silica is deposited. The method for producing the pouch container according to claim 11.

15. A pouch bag made of a film having a metal layer and a resin layer on a surface thereof; A pouch container comprising: a mouth member having a flange portion and an upright portion, the mouth member is attached to the lower surface of the flange by welding the resin on the upper surface of the film by ultrasonic, heat, or high frequency welding; The inner part of the mouth member is closed by the upper surface film of the pouch bag until immediately before use. Pouch container.

16. A pouch bag made of a film having a metal layer and a resin layer on a surface thereof; A pouch container comprising: a mouth member having a flange portion and an upright portion, the mouth member is integrally formed by insert molding or in-mold molding so that the lower surface of the flange is in close contact with the resin on the upper surface of the film, The inner part of the mouth member is closed by the upper surface film of the pouch bag until immediately before use. Pouch container.

17. A pouch container according to claim 15 or 16; A pouch container with a cap comprising: a cap engageable with the mouth member, A helical protrusion is formed on the outer periphery of the upright portion of the mouth member, The cap is A side wall having a spiral groove formed on an inner circumferential surface thereof; and a breakthrough plug depending downwardly, Just before use, the cap is rotated relative to the upright portion, so that the breakthrough plug is inserted in the forward direction. Perforate the upper film Pouch container with cap.

18. A pouch container according to claim 15 or 16; an outer container capable of housing the pouch container; A double container with a discharge mechanism, the double container comprising: a mechanism for discharging a content attached to the mouth member of the pouch container, the discharge mechanism having a mechanism for preventing air from flowing into the pouch container when discharging the content, A helical protrusion is formed on the outer periphery of the upright portion of the mouth member, The discharge mechanism includes: A pump mechanism covering an upper surface of the outer container; a spiral cylinder extending downward from a center of a lower surface of the pump mechanism and having a spiral groove formed on an inner peripheral surface thereof; A breakthrough tube that hangs down inside the spiral tube and has an outer periphery that is narrower than the inner periphery of the upright portion, Immediately before use, the discharge mechanism is rotated relative to the mouth member, causing the breakthrough tube to pierce the top film. Double container with dispensing mechanism.

Images