JP2016068959A - Liquid storing container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid storing container that can prevent a liquid storing bag arranged in an outer container from causing twist.SOLUTION: The liquid storing container comprises an outer container having an upper opening and a liquid storing bag that is arranged in the outer container, has a spouting member attached to an upper end part thereof and stores liquid therein. The spouting member has an attached part to be attached to the liquid storing bag and a peripheral edge flange. In the upper opening of the outer container is provided with a receiving flange, and the peripheral flange is supported in a part protruding inward relative to an inner peripheral surface of the upper opening, in the receiving flange. In either one of the peripheral flange and the receiving flange is provided with a protruding part, and in the other is provided with a protruding-part insertion part into which the protruding part is inserted and is provided with a lid body so as to cover at least part of the spouting member.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a liquid storage container for storing a liquid such as an electrolyte for a lithium ion battery.

  Conventionally, for example, a liquid such as an electrolyte for a lithium ion battery is stored in a canister (metal can), and the metal can in which the liquid is stored is conveyed. If necessary, the liquid is taken out from the inside of the metal can and used.

  The inside of the metal can from which the liquid has been taken out is then cleaned, and the liquid is again stored and transported next time.

  By the way, it is necessary to handle the electrolyte for the lithium battery carefully, and it is necessary to clean the metal can in which the electrolyte for the lithium battery is stored once with high precision. It is expensive.

  On the other hand, a liquid storage bag is arranged in an outer container made of a metal can, and a liquid nozzle is provided through the outer container and the liquid storage bag, and the liquid in the liquid storage bag is discharged outwardly through the liquid nozzle. A liquid storage container that discharges the liquid has also been developed (see, for example, Patent Document 1). In this case, nitrogen gas is supplied as a pressurized gas from the nitrogen gas supply nozzle to the space between the outer container and the liquid storage bag, and the liquid in the liquid storage bag is discharged outward by this pressurized gas.

  In such a liquid storage container, a fitment is fitted in the holder, and the holder is fitted in the upper opening of the outer container. The liquid storage bag is adapted to the lower end of the equipment.

JP 2009-1342 A

  However, in the above-described liquid storage container, depending on the folded shape and size of the liquid storage bag when the liquid storage bag is inserted into the outer container, the liquid storage bag is not in the outer container when the liquid storage bag is inflated in the outer container. It may collide with the inner surface, rotate in the outer container together with the equipment, and the liquid storage bag may be twisted. Further, when a liquid nozzle of a type to be screwed to the equipment is inserted into the liquid storage bag, the equipment receives a rotational force from the liquid nozzle, so that the possibility that the liquid storage bag is twisted is further increased. Such twisting of the liquid storage bag is not preferable because it causes a decrease in the internal volume.

  The present invention has been devised to pay attention to the above problems and to effectively solve them. The objective of this invention is providing the liquid storage container which can prevent that a twist generate | occur | produces in the liquid storage bag arrange | positioned in an outer side container.

The present invention comprises an outer container having an upper opening, and a liquid storage bag that is disposed in the outer container, has a pouring member attached to an upper end portion thereof, and stores liquid therein. The member has an attachment portion attached to the liquid storage bag and a peripheral flange, and a receiving flange is provided in the upper opening of the outer container, and an inner peripheral surface of the upper opening of the receiving flange The peripheral flange is supported on a portion protruding inward with respect to the convex flange insertion site where the convex flange is provided on one of the peripheral flange and the receiving flange, and the convex is inserted on the other And a lid is provided to cover at least a part of the pouring member.
Specifically, for example, the convex portion insertion portion has a bottomed concave shape. Alternatively, for example, the convex portion insertion site may have a bottomless hole shape.
Preferably, the receiving flange includes a first portion extending in the circumferential direction along a part of the upper opening in the circumferential direction, and a second portion extending in the circumferential direction along the other portion of the upper opening in the circumferential direction; Have
In this case, more preferably, a support shaft that pivotably connects the base end portion of the first portion and the base end portion of the second portion, the tip end portion of the first portion, and the tip end of the second portion. And a latching means for detachably engaging the part.
Preferably, a liquid nozzle that discharges liquid penetrates the pouring member, or is attached to the pouring member, and a lower end of the liquid nozzle has a dome shape, A plurality of openings are provided in the dome shape.
Further, the present invention is arranged in a liquid storage container main body including an outer container having an upper opening, a receiving flange provided in the upper opening of the outer container, and a lid, and is poured into the upper end portion. A liquid storage bag in which a member is attached and a liquid is stored therein, wherein the pouring member is at least partially covered by the lid, and the pouring member is configured to store the liquid. A mounting portion attached to the bag; and a peripheral flange, wherein the peripheral flange is supported by a portion of the receiving flange protruding inward with respect to the inner peripheral surface of the upper opening. The peripheral flange is provided with a convex portion insertion portion into which a convex portion provided in the receiving flange is inserted or a convex portion to be inserted into a convex portion insertion portion provided in the receiving flange. Liquid characterized by It is paid bag.
Further, the present invention is arranged in a liquid storage container body including an outer container having an upper opening, a receiving flange provided in the upper opening of the outer container, and a lid, and stores the liquid therein. A pouring member attached to an upper end portion of the liquid storage container, wherein the pouring member is at least partially covered by the lid, and an attachment portion attached to the liquid storage bag; A peripheral flange, and the peripheral flange is supported by a portion of the receiving flange that protrudes inward with respect to the inner peripheral surface of the upper opening. 3. A pour-out, characterized in that a protrusion insertion portion into which a protrusion provided on the receiving flange is inserted or a protrusion inserted into a protrusion insertion portion provided in the receiving flange is provided. It is a member.
In addition, the present invention comprises an outer container having an upper opening, a liquid storage bag that is disposed in the outer container, has a pouring member attached to an upper end portion thereof, and stores liquid therein, The dispensing member has a mounting portion attached to the liquid storage bag and a peripheral flange, and a receiving flange is provided in the upper opening of the outer container, and an inner portion of the upper opening of the receiving flange is provided. The peripheral flange is supported on a portion protruding inward with respect to the peripheral surface, and a convex portion is provided on one of the peripheral flange and the receiving flange, and the convex portion is inserted on the other. A step of preparing a liquid storage container in which an insertion site is provided and a lid is provided to cover at least part of the extraction member; and a liquid nozzle is passed through the extraction member; Or before And attaching the liquid nozzle in the pouring member, a liquid filling method of comprising the the steps of filling the liquid into the interior of the liquid storage bag from the liquid nozzle.
Preferably, before filling the liquid storage bag from the liquid nozzle with the liquid, the inside of the liquid storage bag is replaced with dry air, and the space between the outer container and the liquid storage bag is dry air. To reduce the dew point inside the liquid storage bag and the dew point of the space between the outer container and the liquid storage bag.
In addition, the present invention comprises an outer container having an upper opening, a liquid storage bag that is disposed in the outer container, has a pouring member attached to an upper end portion thereof, and stores liquid therein, The dispensing member has a mounting portion attached to the liquid storage bag and a peripheral flange, and a receiving flange is provided in the upper opening of the outer container, and an inner portion of the upper opening of the receiving flange is provided. The peripheral flange is supported on a portion protruding inward with respect to the peripheral surface, and a convex portion is provided on one of the peripheral flange and the receiving flange, and the convex portion is inserted on the other. A step of preparing a liquid storage container in which an insertion site is provided and a lid is provided to cover at least part of the extraction member; and a liquid nozzle is passed through the extraction member; Or before And attaching the liquid nozzle in the pouring member, a liquid discharge method is characterized in that and a step of discharging the liquid filled in the interior of the liquid storage bag from the liquid nozzle.

  According to the present invention, it is possible to prevent the liquid storage bag disposed in the outer container from being twisted.

FIG. 1 is an overall schematic view showing a liquid storage container according to an embodiment of the present invention. FIG. 2 is an exploded view of a dispensing member portion of the liquid storage container of FIG. FIG. 3 is a perspective view showing a state in which the dispensing member of the liquid storage container of FIG. 1 is supported by the receiving flange. FIG. 4 is a perspective view showing a state where the extraction member and the receiving flange of FIG. 3 are separated. FIG. 5 is an enlarged view of the tip portion of the liquid nozzle of the liquid container shown in FIG. FIG. 6 is a side view showing a liquid storage bag and a dispensing member of the liquid storage container of FIG. FIG. 7A is a cross-sectional view showing a material for an inner bag in the liquid storage bag of FIG. 6, and FIG. 7B is a cross-sectional view showing a material for an outer bag. FIG. 8 is a schematic view corresponding to FIG. 1 and is a view for explaining a first modification of the liquid storage container. FIG. 9 is a plan view showing a modification of the receiving flange. FIG. 10 is a side view of the receiving flange of FIG. FIG. 11 is a view for explaining a state in which an open space is opened between the tip portion of the first portion and the tip portion of the second portion in the receiving flange of FIG. 9.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Note that, in the drawings attached to the present specification, for the sake of easy understanding of the drawings, the scale and the vertical / horizontal dimension ratio are appropriately changed and exaggerated from those of the actual ones.

  FIG. 1 thru | or FIG. 7 (a) (b) is a figure which shows one Embodiment of the liquid storage container of this invention.

  First, with reference to FIG. 1 thru | or FIG. 5, the outline of the liquid storage container by this Embodiment is demonstrated.

  As shown in FIG. 1, the liquid storage container 1 is disposed in the outer container 2 having an upper opening 2 a and the outer container 2, and a pouring member 15 is attached to the upper end portion to store the liquid therein. A liquid storage bag 10.

  The liquid storage bag 10 stores a liquid such as a high-purity chemical solution for pharmaceuticals or foods, for example. In addition to a high-purity chemical solution for pharmaceuticals or foods, a resist-removing chemical solution used in a semiconductor manufacturing process, or for etching A chemical solution or other chemical solution can also be stored.

  In addition, the liquid storage bag 10 may store a resist removal chemical solution or an etching chemical solution used in the lead frame manufacturing process, and a resist removal chemical solution or an etching chemical solution used in the suspension board manufacturing process. In addition, printing ink used in the printing process may be stored.

  In the present embodiment, as shown in FIG. 6, the liquid storage bag 10 is a multiple bag having an inner bag 11 in which a liquid such as a high-purity chemical solution is stored and an outer bag 12 surrounding the inner bag 11. is there. The dispensing member 15 penetrates the inner bag 11 and the outer bag 12 and is heat-sealed with the inner bag 11. In this case, the inner bag 11 is heat-sealed with the extraction member 15 on one side and is heat-sealed with the outer bag 12 on the other side.

  For example, when the high purity chemical stored in the inner bag 11 of the liquid storage bag 10 dislikes moisture, metal ions, etc., the moisture, metal ions are used as the inner bag 11 of the liquid storage bag 10 storing the high purity chemical. A material that does not contain as much as possible is used.

  As shown in FIG. 1, the pouring member 15 attached to the upper end portion of the liquid storage bag 10 is positioned in the upper opening 2 a of the outer container 2.

  The outer container 2 is made of, for example, a metal can, but can be made of a synthetic resin in addition to a metal.

  As shown in FIG. 1, a ring-shaped receiving flange 4 having a portion projecting inward with respect to the inner peripheral surface of the upper opening 2a is provided in the upper opening 2a of the outer container 2 with a ring-shaped gasket 3 (O-ring). ). Further, a lid 5 that seals the upper opening 2 a of the outer container 2 is provided so as to cover the pouring member 15 of the liquid storage bag 10. The outer container 2, the receiving flange 4, and the lid 5 are made of, for example, stainless steel as a whole.

  Next, with reference to FIG. 1 thru | or FIG. 4, the attachment structure of the extraction | pouring member 15, the receiving flange 4, and the cover body 5 is demonstrated.

  As shown in FIGS. 1 and 2, a ring-shaped gasket 3 is provided on the periphery of the upper opening 2 a of the outer container 2, and the ring-shaped receiving flange 4 is provided on the ring-shaped gasket 3. The receiving flange 4 has a portion protruding inward with respect to the inner peripheral surface of the upper opening 2a.

  In the present embodiment, as shown in FIGS. 3 and 4, a plurality (four in the illustrated example) are provided on the upper surface of the portion of the receiving flange 4 that protrudes inward with respect to the inner peripheral surface of the upper opening 2 a. Convex portions 4a are provided at equal intervals in the circumferential direction. In the following description, as a specific embodiment, a case where the convex portion insertion portion 4a has a bottomed concave shape is described, and the convex portion insertion portion 4a may be referred to as a “concave portion 4a”. In addition, as convex part insertion site | part 4a, it is not limited to this, You may have a bottomless hole shape. In the illustrated example, each recess 4a has a square shape in plan view.

  On the other hand, the pouring member 15 has a peripheral flange 21 at the periphery of the upper end thereof. The outer diameter of the peripheral flange 21 is larger than the inner diameter of the portion of the receiving flange 4 that protrudes inward with respect to the inner peripheral surface of the upper opening 2 a, and this peripheral flange 21 is the inner periphery of the upper opening 2 a of the receiving flange 4. By being supported on the upper surface of the portion protruding inward with respect to the surface, the pouring member 15 is positioned in the upper opening 2a of the outer container 2 without dropping due to gravity.

  In the present embodiment, as shown in FIGS. 3 and 4, a plurality of (four in the illustrated example) convex portions 21 a that can be inserted into the concave portions 4 a of the receiving flange 4 are provided on the lower surface of the peripheral flange 21. It is provided at equal intervals in the circumferential direction. In the illustrated example, each convex portion 21a has a square shape in plan view corresponding to the shape in plan view of the concave portion 4a.

  When the peripheral flange 21 is supported by a portion of the receiving flange 4 that protrudes inward with respect to the inner peripheral surface of the upper opening 2a, each convex portion 21a of the peripheral flange 21 is inserted into the concave portion 4a of the receiving flange 4, respectively. It has become so. Thereby, the pouring member 15 and the receiving flange 4 are positioned with respect to each other in the circumferential direction, and the pouring member 15 is prevented from rotating on the receiving flange 4.

  In addition, if the planar view shape of the convex part 21a of the peripheral flange 21 and the recessed part 4a of the receiving flange 4 is a shape corresponding to each other, it is not limited to a square shape, for example, it may be a circular shape, a triangular shape, or a rectangular shape. Good.

  Further, the projections 21 a of the peripheral flange 21 and the recesses 4 a of the receiving flange 4 are different in plan view shape according to the type of liquid to be stored in the liquid storage container 1, so that The recess 4a of the receiving flange 4 can also function as a so-called key and keyhole. For example, the convex portion 21a of the peripheral flange 21 and the concave portion 4a of the receiving flange 4 of the liquid storage container 1 for storing the first liquid (for example, sugar water) are molded into a first shape (for example, a square shape) in plan view, and the second If the convex portion 21a of the peripheral flange 21 and the concave portion 4a of the receiving flange 4 in the liquid storage container 1 for storing liquid (for example, salt water) are formed into a second shape (for example, a triangular shape) in plan view, the first liquid is stored. The convex portion 21a of the peripheral flange 21 for use is prevented from being inserted into the concave portion 4a of the receiving flange 4 for storing the second liquid, whereby the liquid storage bag 10 for storing the first liquid is stored in the second liquid storing bag. Can be prevented from being set in the outer container 2 by mistake.

  When the convex portion 21a of the peripheral flange 21 and the concave portion 4a of the receiving flange 4 function as a so-called key and keyhole, the shape in plan view of the convex portion 21a of the peripheral flange 21 and the concave portion 4a of the receiving flange 4 is stored in the liquid storage. For example, the number of the convex portions 21a of the peripheral flange 21 and the concave portions 4a of the receiving flange 4 and the installation patterns are accommodated in the liquid storage container 1. It may vary depending on the type of liquid to be made.

  The dispensing member 15 will be further described. As shown in FIGS. 1 to 4, the dispensing member 15 is supplied from a liquid nozzle space 15 </ b> A in which a liquid nozzle 16 (described later) extends and a pressurized gas supply plug 17 (described later). A cylindrical partition wall 20 that is partitioned into a pressurized gas space 15B filled with the pressurized gas is provided. That is, a liquid nozzle space 15 </ b> A through which the liquid nozzle 16 penetrates is formed inside the cylindrical partition wall 20 of the pouring member 15, and the outside of the partition wall 20 in the pouring member 15 is a pressurized gas space. 15B.

  The pouring member 15 has a bottom portion 22 that defines the bottom surface of the pressurized gas space 15B. A communication hole 22a is formed in the bottom portion 22, and the pressurized gas space of the pouring member 15 is formed by the communication hole 22a. 15B and the pressurization space 8 formed between the outer container 2 and the liquid storage bag 10 communicate with each other.

  The pouring member 15 has a body portion 26 that continuously extends downward from the partition wall 20, and an attachment portion 25 is formed at the lower end portion of the body portion 26, and the attachment portion 25 is the inner bag 11. It is heat-sealed with one side. The inner bag 11 is heat-sealed with the outer bag 12 on the other side. The attachment portion 25 of the dispensing member 15 has a substantially oval shape in plan view, and thus the attachment portion 25 and the inner bag 11 of the liquid storage bag 10 can be easily heat-sealed.

  Further, the pouring member 15 has a through hole 19 that penetrates the body portion 26 and the attachment portion 25 in the vertical direction in order, and the liquid nozzle space 15 </ b> A and the liquid storage bag 10 pass through the through hole 19. Communicated. In addition, a thread groove is formed along the circumferential direction on the inner peripheral surface that defines the through hole 19 of the extraction member 15.

  In addition, the pouring member 15 is made of a synthetic resin as a whole.

  As shown in FIGS. 1 and 2, the lid 5 is provided so as to cover the pouring member 15, seals the upper opening 2 a of the outer container 2, and sequentially connects the lid 5, the receiving flange 4, and the gasket 3. A plurality of (6 in the illustrated example) bolts 6 are bolted and fixed to the periphery of the upper opening 2a of the outer container 2.

  A cylindrical fitting portion 5 a that can be inserted into the partition wall 20 of the extraction member 15 is provided on the lower surface of the lid 5, and a ring-shaped second gasket is provided on the outer peripheral surface of the fitting portion 5 a. 5b (O-ring) is provided. When the lid 5 is provided so as to cover the pouring member 15, the fitting portion 5a of the lid 5 is fitted to the partition wall 20 of the pouring member 15 via the second gasket 5b. . As a result, the liquid nozzle space 15A and the pressurized gas space 15B of the dispensing member 15 can be separated in an airtight manner. Inside the lid 5, a nozzle opening 5 c communicating with the liquid nozzle space 15 A of the pouring member 15 is provided inside the cylindrical fitting portion 5 a.

  As described above, the liquid nozzle 16 penetrates into the liquid nozzle space 15A of the extraction member 15, and the pressurized gas is supplied from the pressurized gas supply plug 17 into the pressurized gas space 15B. It has become.

  As shown in FIG. 1, the liquid nozzle 16 extends in the liquid nozzle space 15 </ b> A of the extraction member 15 and is firmly held by the extraction member 15. More specifically, on the side surface of the liquid nozzle 16, a screw thread corresponding to the thread groove on the inner peripheral surface that defines the through hole 19 of the extraction member 15 is formed. The liquid nozzle 16 is inserted into the through hole 19 of the pouring member 15 while rotating, so that the thread on the side surface of the liquid nozzle 16 defines the through hole 19 of the pouring member 16. It is firmly screwed into the thread groove.

  The liquid nozzle 16 discharges the liquid in the liquid storage bag 10 outward, but can also be used for the purpose of filling the liquid storage bag 10 with liquid.

  As the liquid nozzle 16, a well-known liquid nozzle can be used which is usually used as a high-purity chemical liquid nozzle. Specifically, for example, a USE-PL type plug manufactured by Surpass Industry Co., Ltd. Can be used.

  As shown in FIG. 5, the lower end of the liquid nozzle 16 has a dome shape 16b, and a plurality of openings 16c are provided in the dome shape 16b. Since the lower end of the liquid nozzle 16 has the dome shape 16b, for example, even if the inner surface of the inner bag 11 of the liquid storage bag 10 contacts the lower end of the liquid nozzle 16, the inner bag of the liquid storage bag 10 11 can be prevented from being damaged and ruptured. In addition, since the plurality of openings 16 c are provided at the lower end of the liquid nozzle 16, the inner surface of the inner bag 11 of the liquid storage bag 10 contacts the lower end of the liquid nozzle 16 and a part of the openings 16 c is blocked. Even in such a case, the liquid can be continuously discharged from the other opening 16c.

  As shown in FIG. 1, the pressurized gas supply plug 17 is firmly held by the lid 5, and inert gas such as nitrogen gas is supplied from the pressurized gas supply plug 17 to the pressurized gas space of the extraction member 15. 15B can be filled. The inert gas filled into the pressurized gas space 15B from the pressurized gas supply plug 17 is then pressurized between the outer container 2 and the liquid storage bag 10 through the communication hole 22a from the pressurized gas space 15B. It is sent into the space 8. Then, by supplying an inert gas into the pressurizing space 8, the liquid storage bag 10 can be pressurized from the outside, and the liquid in the liquid storage bag 10 can be discharged from the liquid nozzle 16 to the outside.

  Further, the lid 5 is provided with a pressurized gas discharge plug 18.

  An external liquid supply mechanism (not shown) is connected to the upper end of the liquid nozzle 16, and an external pressurized gas supply mechanism (not shown) is connected to the pressurized gas supply plug 17. Are connected to each other.

  Next, the liquid storage bag 10 will be described with reference to FIGS. 6 and 7.

  The inner bag 11 constituting the liquid storage bag 10 is prepared by preparing a pair of films made of the inner bag material 110 and heat-sealing the peripheral edges of the pair of films to form the heat seal portion 11a. (See FIG. 7 (a)).

  As the material 110 for the inner bag, a polyolefin material such as polyethylene (PE) or polypropylene (PP), a fluorine-containing resin, or the like can be used. Since the inner bag 11 is a part that directly touches the liquid, it is preferable to use a material that does not contain water and metal ions as much as possible, such as a material with low moisture and low metal ions. In addition, the inner bag material 110 is more preferably an additive-free polyolefin, and by using such an additive-free polyolefin, the components in the inner bag material 110 are eluted into the liquid. Can be suppressed.

  In addition, the liquid is stored in the inner bag 11, but the inner bag 11 has an inner surface so that the inner bag 11 is not damaged even if pressure is applied from the liquid to the inner surface of the inner bag 11 during transportation. The corner 11b has a curved surface.

  That is, the liquid storage bag 10 having the inner bag 11 in which the liquid is stored is disposed in the outer container 2 to obtain the liquid storage container 1. When the liquid storage container 1 is transported, the liquid storage bag 1 is stored in the inner bag 11. It is also conceivable that pressure is applied to the inner surface of the inner bag 11 from the applied liquid. In such a case, if the corner 11b on the inner surface of the inner bag 11 has a polygonal shape, pressure is applied to the inner surface of the inner bag 11 from the liquid, and local stress is generated in the polygonal corner 11b. This is because the inner bag 11 may be damaged near the corner 11b.

  On the other hand, according to the present embodiment, since the corner 11b of the inner surface of the inner bag 11 has a curved surface, even if pressure is applied from the liquid to the inner surface of the inner bag 11 during conveyance, the inner bag 11 is formed of the curved surface. No local stress is generated in the corner 11b, and damage to the inner bag 11 in the vicinity of the corner 11b can be prevented.

  The corner portion 11b of the inner bag 11 having such a curved surface can be obtained by forming the heat seal portion 11a so that the corner portion 11b has a curved surface when the inner bag 11 is manufactured.

  Of course, the shape of the heat seal part 11a is not limited to the form having such a curved surface.

  Next, the outer bag 12 will be described. The outer bag 12 surrounds the inner bag 11 from the outside, and is disposed in the outer container 2. The outer bag 12 protects the inner bag 11 from the outside, and the impact is directly applied to the inner bag 11 from the outer container 2. It functions so as not to be transmitted to 11.

  For this reason, the outer bag material 120 for producing the outer bag 12 includes a PE layer, a polyolefin layer such as PP, a metal layer such as an aluminum layer (Al layer), polyethylene, and the like, which are sequentially arranged from the inside toward the outside. A laminate including a terephthalate layer (PET layer) or a stretched nylon layer (ON layer) is used (see FIG. 7B).

  Among these, a polyolefin layer such as PE or PP functions as a heat seal layer, a metal layer such as an Al layer functions as a gas barrier layer, and a PET layer or an ON layer functions as a layer having impact resistance.

  As described above, the outer bag material 120 has excellent impact resistance and gas barrier properties as a whole as compared with the inner bag material 110, while the inner bag material 110 is the outer bag material 120. Compared to, it is made of a material having a low water content and low metal ions.

  As an example, the outer bag 12 is formed by preparing a surface film, a back film, and a pair of gusset films made of the outer bag material 120, and heat-sealing these peripheral edges to form the heat seal portion 12a. Also good.

  In particular, the outer bag 12 can have a gusset-shaped outer shape by increasing the area of the heat seal portion 12a at the bottom 12e of the outer bag 12. The outer bag 12 having such a gusset-shaped outer shape can stand by itself at the bottom 12e in the outer container 2.

  Thus, by allowing the outer bag 12 having a gusset-shaped outer shape to stand by itself in the outer container 2, the liquid storage bag 10 can be stably disposed as a whole in the outer container 2. For this reason, at the time of conveyance, it is suppressed that the liquid storage bag 10 shakes or shifts in the outer container 2, and the liquid stored in the inner bag 11 can be stably transferred.

  Of course, the shape of the outer bag 12 is not limited to such a gusset type.

  Next, the operation of the present embodiment having such a configuration will be described.

  First, a method for manufacturing the liquid storage container 1 will be described.

  As shown in FIG. 6, the inner bag 11 is inserted into the outer bag 12 having a gusset-shaped outer shape from the upper opening of the outer bag 12.

  Next, the attachment portion 25 of the extraction member 15 is inserted into the inner bag 11 from the upper opening of the inner bag 11.

  Thereafter, the upper opening of the inner bag 11 and the upper opening of the outer bag 12 are aligned and heat sealed together. Thereby, the upper opening of the inner bag 11 and the upper opening of the outer bag 12 are integrally sealed to form the hermetic seal portion 13. At the same time, the attaching portion 25 of the pouring member 15 is also heat-sealed integrally with the inner bag 11 and the outer bag 12, and the attaching portion 25 of the pouring member 15 is fixed to the inner bag 11 and the outer bag 12 by the hermetic seal portion 13. (See FIG. 6).

  In this way, the liquid storage bag 10 having the inner bag 11 and the outer bag 12 and having the pouring member 15 attached to the upper end portion is obtained.

  On the other hand, the receiving flange 4 corresponding to the size and shape of the extraction member 15 is prepared in advance. In addition, a lid 5 to which a pressurized gas supply plug 17 and a pressurized gas discharge plug 18 are attached is also prepared in advance.

  Next, a ring-shaped gasket 3 is provided on the periphery of the upper opening 2 a of the outer container 2, and a receiving flange 4 is provided on the gasket 3. Then, the liquid storage bag 10 is inserted into the outer container 2 from the upper opening 2 a through the inside of the receiving flange 4, and the peripheral flange 21 of the pouring member 15 is formed on the inner peripheral surface of the upper opening 2 a of the receiving flange 4. On the other hand, it is supported by a portion protruding inward. Thereby, the pouring member 15 is positioned in the upper opening 2a of the outer container 2 with respect to the vertical direction. At this time, the convex portion 21 a provided on the lower surface of the peripheral flange 21 of the extraction member 15 is inserted into the concave portion 4 a provided on the upper surface of the receiving flange 4. Thereby, the pouring member 15 and the receiving flange 4 are positioned with respect to the circumferential direction. Further, the convex portion 21a of the peripheral flange 21 and the concave portion 4a of the receiving flange 4 function as a so-called key and keyhole, whereby the liquid storage bag 10 for storing the first liquid is placed in the outer container 2 for storing the second liquid. Incorrect setting is prevented.

Next, the lid body 5 is provided so as to cover the extraction member 15, and is bolted to the periphery of the upper opening 2 a of the outer container 2 by a bolt 6 that passes through the lid body 5, the receiving flange 4 and the gasket 3 in order. Is done. At this time, the gasket 3 does not necessarily have to be bolted, and may be simply sandwiched between the receiving flange 4 and the peripheral edge of the upper opening 2a of the outer container 2.
When the lid 5 is attached to the outer container 2 as described above, the pressurized gas supply plug 17 and the pressurized gas discharge plug 18 attached to the lid 5 are placed in the pressurized gas space 15B of the extraction member 15. Communicated. Further, the nozzle opening 5 c provided in the lid 5 is communicated with the liquid nozzle space 15 </ b> A of the pouring member 15.

  Thereafter, an inert gas such as nitrogen gas is supplied into the liquid storage bag 10 from the through-hole 19 of the pouring member 15, and the liquid storage bag 10 is inflated in the outer container 2. As described in the section of the problem to be solved by the invention, in the conventional liquid storage container, depending on the folded shape and size of the liquid storage bag when the liquid storage bag is inserted into the outer container, the liquid is stored in the outer container. When the bag is inflated, the liquid storage bag may collide with the inner surface of the outer container, rotate together with the dispensing member in the outer container, and the liquid storage bag may be twisted. On the other hand, according to the present embodiment, since the pouring member 15 and the receiving flange 4 are positioned with respect to the circumferential direction, twisting occurs when the liquid storage bag 10 is inflated in the outer container 2. There is nothing.

  Next, a method for using the liquid storage container 1 will be described.

  First, the liquid nozzle 16 is inserted into the liquid nozzle space 15A of the extraction member 15 through the nozzle opening 5c of the lid 5, and is inserted into the through hole 19 of the extraction member 15 while being rotated. The thread on the side surface of the nozzle 16 is firmly screwed into the thread groove on the inner peripheral surface defining the through hole 19 of the extraction member 15. At this time, the dispensing member 15 receives external force in the rotational direction from the liquid nozzle 16, but the convex portion 21 a provided on the lower surface of the peripheral flange 21 is inserted into the concave portion 4 a provided on the upper surface of the receiving flange 4. Therefore, the pouring member 15 is prevented from rotating on the receiving flange 4. This prevents the liquid storage bag 10 from being twisted in the outer container 2. By preventing the liquid storage bag 10 from being twisted, it is easy to fill the liquid storage bag 10 with a chemical solution, and it is possible to reliably fill the chemical solution up to a specified amount.

  Next, an external liquid supply mechanism (not shown) is connected to the upper end of the liquid nozzle 16, and the inner bag 11 is filled from the liquid supply mechanism via the liquid nozzle 16. Thereafter, the upper end of the liquid nozzle 16 is sealed by a cap (not shown), and the liquid storage container 1 including the liquid storage bag 10 for storing the liquid and the outer container 2 is transported to the destination.

Next, the cap is removed from the upper end of the liquid nozzle 16 at the transport destination, and a liquid discharge mechanism (not shown) is connected to the upper end of the liquid nozzle 16.
When the liquid storage container 1 is transported, the liquid nozzle 16 is once removed, and the liquid storage container 1 is transported to the destination with the through hole 19 of the pouring member 15 sealed with a pouring member cap (not shown). May be. In this case, when discharging the liquid from the liquid storage container 1, the discharging member cap is removed from the discharging member 15, and the liquid nozzle 16 is screwed into use.

  Next, a pressurized gas supply mechanism (not shown) is connected to the pressurized gas supply plug 17, and pressurized gas is supplied from the pressurized gas supply plug 17 into the pressurized gas space 15 </ b> B of the extraction member 15. The The pressurized gas in the pressurized gas space 15B is sent into the pressurized space 8 between the outer container 2 and the liquid storage bag 10 from the communication hole 22a of the extraction member 15, and the liquid storage bag 10 is moved from the outside. Pressurize. Thereby, the liquid stored in the inner bag 11 of the liquid storage bag 10 can be discharged from the liquid nozzle 16 to the liquid discharge mechanism side.

  While the liquid is being discharged, the inner surface of the liquid storage bag 10 can come into contact with the lower end of the liquid nozzle 16, but the lower end of the liquid nozzle 16 has a dome shape 16 b, so that the liquid storage bag 10 is damaged and bursts. Is suppressed. Further, since the plurality of openings 16c are provided at the lower end of the liquid nozzle 16, even if the inner surface of the liquid storage bag 10 contacts the lower end of the liquid nozzle 16 and a part of the openings 16c is blocked, The liquid can be continuously discharged from the other opening 16c.

  According to the present embodiment as described above, when the pouring member 15 is supported by the portion of the receiving flange 4 that protrudes inward with respect to the inner peripheral surface of the upper opening 2 a, it is provided on the peripheral flange 21. By inserting the convex portion 21 into the concave portion 4 a provided in the receiving flange 4, the extraction member 15 is positioned with respect to the receiving flange 4 in the circumferential direction. Accordingly, when the liquid nozzle 16 is inserted into the liquid storage bag 10 disposed in the outer container 2, the extraction member 15 is prevented from rotating on the receiving flange 4 due to an external force from the liquid nozzle 16. In the outer container 2, the liquid storage bag 10 is prevented from being twisted.

  In the present embodiment, the receiving flange 4 is provided with the concave portion 4a, and the peripheral flange 21 of the extraction member 15 is provided with the convex portion 21a that can be inserted into the concave portion 4a of the receiving flange 4. However, the present invention is limited to this. Alternatively, the receiving flange 4 may be provided with a convex portion, and the peripheral flange 21 of the extraction member 15 may be provided with a concave portion that can be inserted into the convex portion of the receiving flange 4. That is, it is only necessary that a convex portion is provided on one of the peripheral flange 21 and the receiving flange 4 and a concave portion into which the convex portion is inserted is provided on the other.

  Moreover, according to this Embodiment, the ring-shaped receiving flange 4 is provided in the upper opening 2a of the outer side container 2, and it is in the part which protrudes inside with respect to the internal peripheral surface of the upper opening 2a among the receiving flanges 4. Since the peripheral flange 21 of the pouring member 15 is supported, the appropriate receiving flange 4 is prepared for the liquid storage bag 10 having a different size and / or shape of the pouring member 15. While using the same outer container 2, it is possible to accommodate the extraction members 15 of various sizes and / or shapes. Thereby, it is not necessary to recreate the outer container 2 every time the size and / or shape of the pouring member 15 is different, and the cost can be reduced.

  Note that various modifications can be made to the above-described embodiment. Hereinafter, an example of modification will be described with reference to the drawings. In the following description and the drawings used in the following description, the same reference numerals as those used for the corresponding parts in the above-described embodiment are used for parts that can be configured in the same manner as in the above-described embodiment, and overlapping Description to be omitted is omitted.

First, a first modification will be described with reference to FIG. In the example shown in FIG. 8, the liquid storage bag 10 ′ of the liquid storage container 1 ′ is for storing a liquid such as an electrolyte for a lithium ion battery. As an electrolytic solution for a lithium ion battery, an organic electrolytic solution containing Li ions such as LiClO ₄ and LiPF ₆ can be used.

  As the liquid nozzle 16 ′, a well-known liquid nozzle that is usually used as an electrolyte solution nozzle can be used. As shown in FIGS. 8 and 9, no thread is formed on the side surface of the liquid nozzle 16 ′, and no thread groove is formed on the side surface of the through hole 19 ′ of the extraction member 15 ′. . Unlike the above-described high-purity chemical liquid nozzle 16, the liquid nozzle 16 ′ is used when the liquid nozzle 16 ′ is inserted into the liquid storage bag 10 ′ via the dispensing member 15 ′. There is no need to rotate and screw it into the pouring member 15 ′, and it is inserted into the through hole 19 ′ of the pouring member 15 ′ away from the inner wall.

  In addition, a nozzle opening 5d and an inflation gas supply opening 5e communicating with the liquid nozzle space 15A of the pouring member 15 are provided inside the cylindrical fitting portion 5a of the lid 5 ′. . The nozzle opening 5d is positioned coaxially with the through hole 19 'of the extraction member 15'.

  Next, the operation of the first modified example having such a configuration will be described.

  First, a method for manufacturing the liquid storage container 1 'will be described.

  Similarly to the above-described embodiment, a liquid storage bag 10 ′ having an inner bag 11 and an outer bag 12 and having a pouring member 15 ′ attached to the upper end portion is prepared. Further, a receiving flange 4 corresponding to the size and shape of the extraction member 15 'is prepared.

  Next, similarly to the above-described embodiment, a ring-shaped gasket 3 is provided on the periphery of the upper opening 2 a of the outer container 2, and a receiving flange 4 is provided on the gasket 3. Then, the liquid storage bag 10 is inserted into the outer container 2 from the upper opening 2 a through the inside of the receiving flange 4, and the peripheral flange 21 of the dispensing member 15 ′ is the inner peripheral surface of the upper opening 2 a of the receiving flange 4. Is supported by a portion protruding inward. Thereby, the pouring member 15 ′ is positioned with respect to the vertical direction in the upper opening 2 a of the outer container 2. At this time, the convex portion 21 a provided on the lower surface of the peripheral flange 21 of the extraction member 15 ′ is inserted into the concave portion 4 a provided on the upper surface of the receiving flange 4.

  Next, a lid 5 ′ is provided so as to cover the pouring member 15 ′, and a peripheral edge of the upper opening 2 a of the outer container 2 by a bolt 6 that passes through the lid 5 ′, the receiving flange 4 and the gasket 3 in order. Bolted to. At this time, the gasket 3 does not necessarily have to be bolted, and may be simply sandwiched between the receiving flange 4 and the peripheral edge of the upper opening 2a of the outer container 2. In this case, the pressurized gas supply plug 17 and the pressurized gas discharge plug 18 attached to the lid 5 ′ are communicated with the pressurized gas space 15 </ b> B of the extraction member 15. Further, the nozzle opening 5 d and the inflation gas supply opening 5 e provided in the lid 5 ′ are communicated with the liquid nozzle space 15 A of the extraction member 15.

  After that, the nozzle opening 5d of the lid 5 ′ is sealed with a nozzle opening cap (not shown), and the liquid is stored in order from the expanded gas supply opening 5e through the liquid nozzle space 15A and the through hole 19 ′. An inert gas, for example, nitrogen gas, which is an inflating gas is supplied into the bag 10 ′, and the liquid storage bag 10 ′ is inflated in the outer container 2. As described in the section of the problem to be solved by the invention, in the conventional liquid storage container, depending on the folded shape and size of the liquid storage bag when the liquid storage bag is inserted into the outer container, the liquid is stored in the outer container. When the bag is inflated, the liquid storage bag may collide with the inner surface of the outer container, rotate together with the dispensing member in the outer container, and the liquid storage bag may be twisted. On the other hand, according to the present embodiment, the pouring member 15 ′ and the receiving flange 4 are positioned relative to each other in the circumferential direction, so that when the liquid storage bag 10 ′ is inflated in the outer container 2, it is twisted. Will not occur.

  Next, a method of using the liquid storage container 1 'will be described.

  First, the nozzle opening cap is removed from the nozzle opening 5d, and then the liquid nozzle 16 ′ passes through the nozzle opening 5d of the lid 5 ′ and enters the liquid nozzle space 15A of the dispensing member 15 ′. Inserted and inserted through the through hole 19 of the extraction member 15 ′. At this time, the liquid nozzle 16 ′ is fixed to the nozzle opening 5 d of the lid 5 ′.

Next, an external liquid supply mechanism (not shown) is connected to the upper end of the liquid nozzle 16 ′, and the inner bag 11 is filled with the liquid from the liquid supply mechanism via the liquid nozzle 16 ′. Thereafter, the upper end of the liquid nozzle 16 ′ is sealed with a cap (not shown), and the liquid storage container 1 ′ including the liquid storage bag 10 ′ for storing the liquid and the outer container 2 is transported to the destination. .
When filling an anaerobic liquid such as an electrolyte for a lithium ion battery, the dew point inside the outer container 2 and the liquid storage bag 10 ′ is lowered before filling the liquid, thereby stabilizing the quality of the liquid. It is effective against. Specifically, dry air is supplied from the inflating gas supply opening 5e to the inside of the liquid storage bag 10 ′ through the liquid nozzle space 15A, and the air inside the liquid storage bag 10 ′ and the supplied dry air are supplied to the liquid nozzle. By discharging to the outside through 16 ', the inside of the liquid storage bag 10' is replaced with dry air. Further, dry air is supplied from the pressurized gas supply plug 17 to the space between the outer container 2 and the liquid storage bag 10 ′ via the pressurized gas space 15B, and between the outer container 2 and the liquid storage bag 10 ′. The air in the space and the supplied dry air are discharged to the outside through the pressurized gas discharge plug 18, thereby replacing the space between the outer container 2 and the liquid storage bag 10 ′ with dry air. Thus, by replacing the inside of the liquid storage bag 10 ′ and the space between the outer container 2 and the liquid storage bag 10 ′ with dry air, the dew point inside the liquid storage bag 10 ′ and the outer container 2 and the liquid storage bag Decrease the dew point of the space between 10 'to the range of -50 ° C to -70 ° C. The dew point inside the liquid storage bag 10 ′ and the dew point of the space between the outer container 2 and the liquid storage bag 10 ′ are dew points on the upper end 16 a of the liquid nozzle and the pressurized gas discharge plug 18, respectively. Can be measured by connecting Thus, in the state where the dew point inside the container is lowered, the liquid quality can be maintained even when an anaerobic liquid such as an electrolytic solution for a lithium ion battery is filled.

  The liquid discharging method at the transport destination is the same as that in the above-described embodiment, and detailed description thereof is omitted.

  Also according to the first modification as described above, the liquid storage bag 10 ′ is not twisted in the outer container 2 as in the above-described embodiment.

  Next, a modified example of the receiving flange 4 ′ will be described with reference to FIGS. 9 to 11. The receiving flange 4 'can be used in both the above-described embodiment and the first modification.

  9 to 11 includes a first portion 41 extending in the circumferential direction along a part in the circumferential direction of the upper opening 2a and a circumferential direction along the other part in the circumferential direction of the upper opening 2a. A second portion 42 that extends, a support shaft 43 that pivotally connects a base end portion 41a of the first portion 41 and a base end portion 42a of the second portion 42, a tip end portion 41b of the first portion 41, and a second portion It has the latching means 44 which detachably engages with the front-end | tip part 41b of the part 42, and stops. Here, the “circumferential direction” refers to a direction that goes around the edge of the upper opening 2a.

  In the illustrated example, the first portion 41 and the second portion 42 are disposed so that the base end portions 41 a and 42 a partially overlap each other, and the support shaft 43 is configured to be the base end portion 41 a of the first portion 41. And the base end portion 42a of the second portion 42 are provided in the thickness direction (see FIG. 10). Thus, the first portion 41 and the second portion 42 can swing with respect to each other about the support shaft 43 as a swing shaft.

  As shown in FIG. 11, when the first portion 41 and the second portion 42 are swung in a direction in which the tip portions 41 b and 42 b are separated from each other, the tip portion 41 b of the first portion 41 and the tip of the second portion 42. An open space is formed between the portion 42b. On the other hand, as shown in FIG. 9, when the first portion 41 and the second portion 42 are swung in a direction in which the tip portions 41 b and 42 b approach each other, the tip portion 41 b and the second portion 42 of the first portion 41. The open space between the front end portion 42b of the first and second end portions 42b is closed.

In the illustrated example, the lower surface of each of the tip portion 41b of the first portion 41 and the tip portion 42b of the second portion 42 is partially subjected to counterbore processing and is recessed, so that it is accommodated in the recessed portion. A locking means 44 is provided on the. As the locking means 44, an appropriate connecting means can be used. Specifically, for example, a clasp such as a patch and lock can be used.
Note that the locking means 44 is not limited to the above-described form. For example, the first portion 41 and the second portion 42 are arranged so as to partially overlap each other, and are provided in the first portion 41 and the second portion 42, respectively. You may latch by the uneven | corrugated shape which was able to be engaged mutually.

  In the above-described embodiment and the first modification, when the liquid storage bag 10, 10 ′, which has been crushed after the liquid discharge is finished, is taken out of the outer flange 2, the crushed liquid storage bag 10, 10 ′ It is drawn upward through the inside of the circumference. At this time, the crushed liquid storage bag 10, 10 ′ may be caught on the inner peripheral edge of the receiving flange 4 and may not be pulled out easily.

  On the other hand, according to the embodiment shown in FIGS. 9 to 11, when the liquid storage bag 10 crushed after the liquid discharge is finished is taken out from the outer container 2, the locking means 44 of the receiving flange 4 is removed, and the first portion 41 and The tip portions 41b and 42b of the second portion 42 are swung away from each other, and an open space is formed between the tip portion 41b of the first portion 41 and the tip portion 42b of the second portion 42. And the crushed liquid storage bag 10 is taken out sideways through the said open space. Thereby, the crushed liquid storage bag 10 can be easily taken out from the outer container 2 without being caught on the inner peripheral surface of the receiving flange 4, which is very convenient.

  9 to 11, it is not always essential that the base end portion 41a of the first portion 41 and the base end portion 42a of the second portion 42 are pivotably connected by the support shaft 43. For example, the base end portion 41 a of the first portion 41 and the base end portion 42 a of the second portion 42 may be detachable by locking means similar to the locking means 44. That is, for example, both end portions of the first portion 41 and the second portion 42 are arranged so as to partially overlap each other, and can be engaged with each other provided at both ends of the first portion 41 and the second portion 42, respectively. The both end portions of the first portion 41 and the second portion may be engaged with each other and stopped by an uneven shape. In this case, the first portion 41 (for example, the upper portion of the upper and lower layers) and the second portion 42 (for example, the lower portion of the upper and lower portions) can be separated, for example, in the vertical direction, that is, the vertical direction. It is. As a result, for example, the liquid storage bag 10 after the liquid discharge is finished can be pulled out slightly upward together with the receiving flange 4, and only the second portion 42 can be removed in this state. By doing so, the pouring member 15 is engaged only with the first portion 41, and the receiving flange 4 and the pouring member 15 can be easily removed, so that the liquid can be stored from the upper opening 2a. The bag 10 can be pulled out.

  Each of the receiving flanges 4 and 4 ′ described above has a ring shape, but if the key function of the convex portion 21a and the convex portion insertion portion 4a can be realized in relation to the peripheral flange 21, It is not limited to this. For example, in the example shown in FIG. 9, the receiving flange 4 ′ has a ring shape in which the first portion 41 and the second portion 42 are integrally connected by the support shaft 43 and the locking means 44. The portion 41 and the second portion may not be divided and integrated, and may be spaced apart with a gap between the both ends.

DESCRIPTION OF SYMBOLS 1 Liquid container 2 Outer container 2a Upper opening 3 Gasket 4 Receiving flange 4a Recess 41 First part 42 Second part 43 Support shaft 44 Locking means 5, 5 'Lid 5a Fitting part 5b Second gasket 5c Nozzle opening 5d Nozzle opening 5e Inflating gas discharge opening 6 Bolt 8 Pressurizing space 10, 10 'Liquid storage bag 11 Inner bag 110 Inner bag material 11a Heat seal portion 11b Corner portion 12 Outer bag 120 Outer bag material 12a Heat seal portion 12b Corner portion 13 Sealing seal portion 15, 15 'Extraction member 15A Liquid nozzle space 15B Pressurized gas space 16, 16' Liquid nozzle 16b Dome shape 16c Opening 17 Pressurized gas supply plug 18 Pressurized gas discharge plug 19, 19 'Through-hole 20 Partition wall 21 Peripheral flange 21a Convex part 22 Bottom part 22a Communication hole 25 Attachment part 26 Trunk part

Claims (11)

An outer container having an upper opening;
A liquid storage bag that is disposed in the outer container, has a pouring member attached to the upper end portion thereof, and stores liquid therein.
With
The pouring member has an attachment portion attached to the liquid storage bag, and a peripheral flange,
The upper opening of the outer container is provided with a receiving flange,
The peripheral flange is supported on a portion of the receiving flange that protrudes inward with respect to the inner peripheral surface of the upper opening,
Of the peripheral flange and the receiving flange, a convex portion is provided on one side, and a convex portion insertion site into which the convex portion is inserted is provided on the other side,
A liquid storage container, wherein a lid is provided to cover at least a part of the pouring member. The liquid storage container according to claim 1, wherein the convex portion insertion portion has a bottomed concave shape. The liquid container according to claim 1, wherein the convex portion insertion portion has a bottomless hole shape. The receiving flange is
A first portion extending in the circumferential direction along a portion of the upper opening in the circumferential direction;
A second portion extending in the circumferential direction along the other portion in the circumferential direction of the upper opening;
The liquid storage container according to claim 1, wherein the liquid storage container is a liquid container. The receiving flange is
A support shaft that pivotably connects the base end of the first part and the base end of the second part;
Locking means for releasably engaging and stopping the tip of the first part and the tip of the second part;
The liquid container according to claim 4, further comprising: A liquid nozzle that discharges liquid penetrates the pouring member or is attached to the pouring member, and the lower end of the liquid nozzle has a dome shape, and a plurality of the dome shape The liquid container according to claim 1, wherein an opening is provided. An outer container having an upper opening, a receiving flange provided in the upper opening of the outer container, and a lid, are arranged in a liquid storage container main body, and a pouring member is attached to the upper end of the container. A liquid storage bag in which liquid is stored,
The pouring member is adapted to be at least partially covered by the lid,
The pouring member has an attachment portion attached to the liquid storage bag, and a peripheral flange,
The peripheral flange is supported by a portion of the receiving flange that protrudes inward with respect to the inner peripheral surface of the upper opening,
The peripheral flange is provided with a convex portion insertion portion into which a convex portion provided on the receiving flange is inserted, or a convex portion to be inserted into a convex portion insertion portion provided in the receiving flange. A liquid storage bag. An outer container having an upper opening, a receiving flange provided in the upper opening of the outer container, and a lid, are arranged in a liquid container main body, and a liquid container that stores liquid therein. A pouring member attached to the upper end,
The pouring member is adapted to be at least partially covered by the lid,
An attachment portion attached to the liquid storage bag, and a peripheral flange;
The peripheral flange is supported by a portion of the receiving flange that protrudes inward with respect to the inner peripheral surface of the upper opening,
The peripheral flange is provided with a convex portion insertion portion into which a convex portion provided on the receiving flange is inserted, or a convex portion to be inserted into a convex portion insertion portion provided in the receiving flange. A pouring member characterized by. An outer container having an upper opening;
A liquid storage bag that is disposed in the outer container, has a pouring member attached to the upper end portion thereof, and stores liquid therein.
With
The pouring member has an attachment portion attached to the liquid storage bag, and a peripheral flange,
The upper opening of the outer container is provided with a receiving flange,
The peripheral flange is supported on a portion of the receiving flange that protrudes inward with respect to the inner peripheral surface of the upper opening,
Of the peripheral flange and the receiving flange, a convex portion is provided on one side, and a convex portion insertion site into which the convex portion is inserted is provided on the other side,
Preparing a liquid storage container in which a lid is provided to cover at least a part of the extraction member;
Passing the liquid nozzle through the pouring member, or attaching the liquid nozzle to the pouring member;
Filling liquid into the liquid storage bag from the liquid nozzle;
A liquid filling method comprising: Before the liquid storage bag is filled with liquid from the liquid nozzle, the inside of the liquid storage bag is replaced with dry air, and the space between the outer container and the liquid storage bag is replaced with dry air. The liquid filling method according to claim 9, wherein a dew point inside the liquid storage bag and a dew point of a space between the outer container and the liquid storage bag are reduced. An outer container having an upper opening;
A liquid storage bag that is disposed in the outer container, has a pouring member attached to the upper end portion thereof, and stores liquid therein.
With
The pouring member has an attachment portion attached to the liquid storage bag, and a peripheral flange,
The upper opening of the outer container is provided with a receiving flange,
The peripheral flange is supported on a portion of the receiving flange that protrudes inward with respect to the inner peripheral surface of the upper opening,
Of the peripheral flange and the receiving flange, a convex portion is provided on one side, and a convex portion insertion portion into which the convex portion is inserted is provided on the other side, and the lid body covers at least a part of the extraction member. A step of preparing a liquid storage container that is provided to cover;
Passing the liquid nozzle through the pouring member, or attaching the liquid nozzle to the pouring member;
Discharging the liquid filled in the liquid storage bag from the liquid nozzle;
A liquid discharging method comprising:

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