JP2014012531A - Drug solution storage container and drug solution storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drug solution storage container and a drug solution storage device which can reduce cleaning cost.SOLUTION: A drug solution storage device 1 includes a metal can 2, and a drug solution storage container 10 disposed in the metal can 2. The drug solution storage container 10 includes an inner bag 11 for storing a drug solution 3, and an outer bag 12 surrounding the inner bag 11. An outlet 15 extends by penetrating the inner bag 11 and the outer bag 12.

Description

  The present invention relates to a chemical solution storage container for storing a chemical solution such as an electrolyte for a lithium ion battery, and a chemical solution storage device including a chemical solution storage container and a metal can in which the chemical solution storage container is disposed. .

  Conventionally, for example, a chemical solution such as an electrolyte solution for a lithium ion battery is stored in a canister can (metal can), and a metal can storing the chemical solution is conveyed. And if necessary, the chemical solution is taken out from the inside of the metal can and used.

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

By the way, it is necessary to handle the electrolyte for the lithium battery carefully, and once cleaning the metal can containing the electrolyte for the lithium battery, it is necessary to clean with high precision, and the cleaning cost of the metal can is expensive. It has become.
For example, for canister can cleaning, in addition to removing the contents, it is necessary to set up a process so that no residue remains after cleaning (Patent Document 1).

JP 10-436

  As described above, when a chemical solution such as an electrolyte for a lithium battery is stored in a metal can, it is necessary to clean the inside of the metal can each time the chemical solution is taken out, and this cleaning cost is expensive.

  The present invention has been made in view of such points, and an object thereof is to provide a chemical solution storage container and a chemical solution storage device that do not require cleaning of a metal can each time a chemical solution is used.

  The present invention provides a chemical solution storage container for storing a chemical solution, comprising an inner bag for storing the chemical solution, an outer bag surrounding the inner bag, and a spout extending through the inner bag and the outer bag. It is a chemical solution storage container.

  The present invention is the chemical solution storage container characterized in that the outer bag has a self-supporting outer shape.

  The present invention is the chemical solution storage container characterized in that the outer bag has a gusset-type outer shape.

  The present invention is the chemical solution storage container characterized in that the inner surface of the inner bag has a corner portion, and the corner portion includes a curved surface.

  The present invention is the chemical solution storage container characterized in that both the inner bag and the outer bag have a cylindrical bag.

  The present invention is a chemical solution storage container characterized in that the inner bag and the outer bag have different materials, and the material of the outer bag has better impact resistance and gas barrier properties than the material of the inner bag.

  According to the present invention, the inner bag and the outer bag have different materials, and the inner bag material is made of a material having a lower moisture content, a lower halogen content, and a lower metal ion than the outer bag material. It is a container.

  The present invention is a chemical solution storage device comprising the chemical solution storage container described above and a metal can in which the chemical solution storage container is disposed.

  As described above, according to the present invention, it is not necessary to clean the metal can every time the chemical solution is used, and the cleaning cost can be reduced.

FIG. 1 is an exploded view showing a chemical container and a chemical container according to the present invention. FIG. 2 is a side view showing the chemical solution storage device. FIG. 3A is a cross-sectional view showing a material for an inner bag, and FIG. 3B is a cross-sectional view showing a material for an outer bag. FIG. 4 is a view showing a modification of the chemical container according to the present invention. FIG. 5 is a view showing another modification of the chemical container according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

  1 to 3 are views showing an embodiment of a chemical solution storage container and a chemical solution storage device according to the present invention.

  As shown in FIGS. 1 to 3, the chemical solution storage device 1 includes a chemical solution storage container 10 for storing a chemical solution such as an electrolyte solution for a lithium ion battery, and the chemical solution storage container 10 disposed therein. A metal can 2 is provided.

  Among these, the chemical solution storage container 10 stores a chemical solution such as a solution for a lithium ion battery. In addition to an electrolyte solution for a lithium ion battery, a chemical solution for resist removal used in a semiconductor manufacturing process, or other chemical solution. Can also be stored.

For example, as the electrolyte solution for lithium ion batteries stored in the chemical solution storage container 10, an organic electrolyte solution containing Li ions such as LiClO ₄ and LiPF ₆ can be used.

  Since such an organic electrolytic solution dislikes moisture, halogen, metal ions, etc., a material that contains as little moisture, halogen, metal ions, etc. as possible is used for the inner bag 11 that stores the organic electrolyte as described later. It is done.

  The metal can 2 has a can body 2A having an upper opening 2C and a lid 2B for sealing the upper opening 2C of the can body 2A. The metal can 2 is made of a stainless steel metal can as a whole. Yes.

  Next, a chemical solution storage container 10 for storing a chemical solution arranged in the metal can 2 will be described with reference to FIGS.

  The chemical solution storage container 10 includes, for example, an inner bag 11 that stores a chemical solution 3 such as an electrolyte for a lithium ion battery, an outer bag 12 that surrounds the inner bag 11, and a spout that extends through the inner bag 11 and the outer bag 12. 15.

  Of these, the spout 15 has a spout main body 15a, a pipe 16 extending from the spout main body 15a into the inner bag 11, and a protruding port 17 projecting outward from the spout main body 15a.

  The spout main body 15a is heat-sealed by a hermetic seal portion 13 formed by integrally sealing the inner bag 11 and the outer bag 12, and the spout 15 is fixed to the inner bag 11 and the outer bag 12.

  In addition, a fixing ring 18 for fixing the spout 15 to the lid 2 </ b> B of the metal can 2 is fitted into the protrusion 17 of the spout 15.

  The inner bag 11 is obtained by preparing a pair of films made of the inner bag material 11A, and heat-sealing the peripheral edges of the pair of films to form the heat seal portion 11a (see FIG. 3A). .

  As the inner bag material 11A, a polyolefin material such as PE or PP can be used. Since the inner bag 11 is a portion that directly touches the chemical solution 3, moisture, halogen, and metal ions that the electrolyte solution for lithium ion batteries dislikes. It is preferable to use a material that does not contain as much as possible, for example, a material with low moisture, low halogen, and low metal ions.

  Further, the chemical solution 3 is stored in the inner bag 11, but the inner bag 11 inner surface is prevented from being damaged even if pressure is applied to the inner bag 11 inner surface from the chemical solution 3 during transportation. The corner 11b has a curved surface.

  That is, the chemical solution storage bag 10 having the inner bag 11 in which the chemical solution 3 is stored is arranged in the metal can 2 to obtain the chemical solution storage device 1. When the chemical solution storage device 1 is conveyed, It is also conceivable that pressure is applied to the inner surface of the inner bag 11 from the stored chemical solution 3.

  In such a case, when the corner 11b of the inner surface of the inner bag 11 has a polygonal shape, when pressure is applied from the chemical 3 to the inner surface of the inner bag 11, local stress is applied to the polygonal corner 11b. It is conceivable that the inner bag 11b is damaged near the corner 11b.

  On the other hand, according to the present invention, the corner 11b of the inner surface of the inner bag 11 is formed of a curved surface. Therefore, even if pressure is applied from the chemical solution 3 to the inner surface of the inner bag 11 during conveyance, the corner formed of the curved surface. The local stress is not generated in the portion 11b, and damage to the inner bag 11 in the vicinity of the corner portion 11b can be prevented.

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

  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 metal can 2, protects the inner bag 11 from the outside, and the impact from the metal can 2 is directly applied to the inner bag 11. It functions so as not to be transmitted.

  For this reason, as the outer bag material 12A for working the outer bag 12, polyolefin layers such as PE and PP, Al layer, PET layer or ON layer (stretched nylon layer) sequentially arranged from the inside to the outside Is used (see FIG. 3B).

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

  Thus, the material 12A for the outer bag 12 has an excellent impact resistance and gas barrier property as a whole compared with the material 11A for the inner bag 11, while the material 11A for the inner bag 11 is used for the outer bag 12. Compared to the material 12A, it is made of a material having a low water content, a low halogen content, and a low metal ion.

  By the way, the outer bag 12 prepares the surface film 12b, the back film 12c, and a pair of gusset films 12d and 12d which consist of the material 12A for the outer bag 12, and heat seals these periphery, and forms the heat seal part 12a. Is obtained.

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

  Thus, by allowing the outer bag 12 having a gusset-type outer shape to stand by itself in the metal can 2, the chemical solution storage container 10 can be stably disposed as a whole in the metal mold 2. For this reason, the chemical | medical solution storage container 10 does not shake or slip | deviate in the metal can 2 at the time of conveyance, and the chemical | medical solution 3 accommodated in the inner bag 11 can be conveyed stably.

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

  First, the manufacturing method of the chemical solution storage container 10 and the chemical solution storage device 1 will be described.

  As shown in FIG. 1, the inner bag 11 is inserted into the outer bag 12 having a gusseted outer shape from the upper opening 12 f of the outer bag 12.

  Next, the spout 15 is inserted into the inner bag 11 from the upper opening 11 f of the inner bag 11.

  Thereafter, the upper opening 11f of the inner bag 11 and the upper opening 12f of the outer bag 12 are aligned and heat sealed together. As a result, the upper opening 11f of the inner bag 11 and the upper opening 12f of the outer bag 12 are integrally sealed to form the hermetic seal portion 13. At the same time, the spout body 15a of the spout 15 is also heat-sealed integrally with the inner bag 11 and the outer bag 12, and the spout 15 is fixed to the inner bag 11 and the outer bag 12 by the hermetic seal portion 13 (see FIG. 2). .

  Thus, the chemical | medical solution storage container 10 provided with the inner bag 11, the outer bag 12, and the spout 15 is obtained. Next, the chemical container 10 is placed in the can body 2A of the metal can 2 by being inserted from the upper opening 2C, and then the upper opening 2C is sealed by the lid 2B.

  In this case, the fixing ring 18 is not attached to the protrusion 17 of the spout 15 and the protrusion 17 of the spout 15 protrudes upward and outward from the opening 2d at the center of the lid 2B (see FIG. 1 and FIG. 1). Figure 2).

  Next, a fixing ring 18 is fitted into the protruding port 17 of the spout 15 that protrudes from the lid 2B of the metal lid 2, and the spout 15 is fixed to the lid 2B of the metal lid 2 in this way.

  In use, the protrusion 17 of the spout 15 is connected to an external supply mechanism (not shown), and the chemical solution 3 is supplied from the supply mechanism into the inner bag 11.

  Next, the protrusion 17 of the spout 15 is sealed with a cap (not shown), and the chemical solution storage device 1 having the inner bag 11, the outer bag 12, and the metal lid 2 is transported to the destination. Thereafter, the cap is removed from the protrusion 17 of the spout 15 at the transport destination, and the protrusion 17 of the spout 15 is connected to a discharge mechanism (not shown). And by this discharge | emission mechanism, the chemical | medical solution 3 in the inner bag 11 is discharged | emitted outside.

  As described above, according to the present embodiment, the chemical solution storage device 1 for storing a chemical solution is disposed in the metal can 2, the metal can 2, the inner bag 11 that stores the chemical solution 3, and the inner bag 11. A chemical solution storage container 10 having an outer bag 12 that surrounds and a spout 15 that extends through the inner bag 11 and the outer bag 12 is provided. For this reason, it is not necessary to wash | clean the metal can 2 frequently compared with the apparatus which stores the chemical | medical solution 3 directly in the metal can 2, and can reduce expensive washing | cleaning cost.

  Further, it is conceivable that pressure is applied from the chemical liquid 3 to the inner surface of the inner bag 11 during the conveyance of the chemical liquid storage device 1, but the corner 11 b of the inner surface of the inner bag 11 is formed of a curved surface, so Even if pressure is applied to the inner surface, stress is not locally concentrated on the corner 11b, and the inner bag 11 is not damaged in the vicinity of the corner 11b.

  Furthermore, since the material 11A of the inner bag 11 is made of a material having a low moisture content, a low halogen content, and a low ion content, the chemical solution 3 stored in the inner bag 11 is deteriorated or adversely affected by the inner bag 11. There is nothing.

  Furthermore, since the outer bag 12 has a gusset-type outer shape, the outer bag 12 can be stably placed in the can body 2 </ b> A of the metal can 2. For this reason, the outer bag 12 does not shake or shift in the metal can 2 during the transport of the chemical solution storage container 10.

  Furthermore, since the material 12A of the outer bag 12 is excellent in impact resistance and gas barrier properties, the inner bag 11 is protected from the outside so that the impact from the metal can 2 is not transmitted to the inner bag 11 during transportation. In addition, it is possible to prevent an external atmosphere from entering the side of the drug solution 3 in the inner bag 11.

Modified Example Next, a modified example of the chemical container according to the present invention will be described with reference to FIGS. 4 and 5A, 5B and 5C.

  In the modification shown in FIGS. 4 and 5A, 5B, and 5C, the same parts as those in the embodiment shown in FIGS. Is omitted.

  First, in the modification shown in FIG. 4, a chemical solution storage container 10 having an inner bag 11 and an outer bag 12 is shown.

  In FIG. 4, for convenience, the chemical solution storage container 10 from which the spout 15 has been removed is shown.

  In FIG. 4, the chemical solution storage container 10 includes an inner bag 11 that stores a chemical solution 3 such as an electrolyte for a lithium ion battery, and an outer bag 12 that surrounds the inner bag 11.

  The inner bag 11 is obtained by preparing a pair of films made of the inner bag material 11A and heat-sealing the peripheral edges of the pair of films to form the heat seal portion 11a (see FIG. 3A). ).

  As the inner bag material 11A, polyolefin such as PE and PP can be used. Since the inner bag 11 is a part that directly touches the chemical solution 3, moisture, halogen, and metal ions that the electrolyte solution for lithium ion batteries dislikes. It is preferable to use a material that does not contain as much as possible, for example, a material with low moisture, low halogen, and low metal ions.

  Further, the chemical solution 3 is stored in the inner bag 11, but the inner bag 11 inner surface is prevented from being damaged even if pressure is applied to the inner bag 11 inner surface from the chemical solution 3 during transportation. The corner 11b has a curved surface.

  That is, the chemical solution storage bag 10 having the inner bag 11 in which the chemical solution 3 is stored is arranged in the metal can 2 to obtain the chemical solution storage device 1. When the chemical solution storage device 1 is conveyed, the chemical solution storage device 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 chemical solution 3.

  In such a case, when the corner 11b of the inner surface of the inner bag 11 has a polygonal shape, when pressure is applied from the chemical 3 to the inner surface of the inner bag 11, local stress is applied to the polygonal corner 11b. It is conceivable that the inner bag 11b is damaged near the corner 11b.

  On the other hand, according to the present invention, the corner 11b of the inner surface of the inner bag 11 is formed of a curved surface. Therefore, even if pressure is applied from the chemical solution 3 to the inner surface of the inner bag 11 during conveyance, the corner formed of the curved surface. The local stress is not generated in the portion 11b, and damage to the inner bag 11 in the vicinity of the corner portion 11b can be prevented.

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

  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 metal can 2, protects the inner bag 11 from the outside, and the impact from the metal can 2 is directly applied to the inner bag 11. It functions so as not to be transmitted.

  For this reason, as the outer bag material 12A for producing the outer bag 12, a laminate including a polyolefin layer such as PE and PP, an Al layer, a PET layer, or an ON layer sequentially arranged from the inside to the outside. Used (see FIG. 3B).

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

  Thus, the material 12A for the outer bag 12 has an excellent impact resistance and gas barrier property as a whole compared with the material 11A for the inner bag 11, while the material 11A for the inner bag 11 is used for the outer bag 12. Compared to the material 12A, it is made of a material having a low water content, a low halogen content, and a low metal ion.

  By the way, the outer bag 12 is obtained by folding one film made of the material 12A for the outer bag 12, and heat-sealing both side edges to form the heat seal portion 12a. That is, the outer bag 12 has a three-way seal structure.

  Thus, since the outer bag 12 has a three-way seal structure, the number of seal portions can be reduced, and thereby the strength of the outer bag 12 can be improved.

  Next, another modification of the chemical solution storage container according to the present invention will be described with reference to FIGS. 5 (a), 5 (b), and 5 (c).

  5 (a), 5 (b), and 5 (c) includes an inner bag 11 in which a chemical solution 3 such as an electrolyte for a lithium ion battery is stored, an outer bag 12 that surrounds the inner bag 11, an inner bag 11 A bag 11 and a spout 15 extending through the outer bag 12 are provided.

  Of these, the spout 15 has a spout main body 15a, a pipe 16 extending from the spout main body 15a into the inner bag 11, and a protruding port 17 projecting outward from the spout main body 15a.

  The spout main body 15a is heat-sealed by a hermetic seal portion 13 formed by integrally sealing the inner bag 11 and the outer bag 12, and the spout 15 is fixed to the inner bag 11 and the outer bag 12.

  Further, a fixing ring 18 for fixing the spout 15 to the lid 2 </ b> B of the metal can 2 is fitted into the protruding port 17 of the spout 15.

  The inner bag 11 and the outer bag 12 are each formed of a cylindrical tube having upper openings 11f and 12f and lower openings 11g and 12g that do not include a polyethylene seal portion.

  In manufacturing the inner bag 11 and the outer bag 12, first, the inner bag 11 made of a cylindrical tube is placed in the outer bag 12 (see FIG. 5A). Next, the lower openings 11g and 12g of the inner bag 11 and the outer bag 12 are integrally heat-sealed, whereby the lower openings 11g and 12g of the inner bag 11 and the outer bag 12 are sealed, and the bottom seal portion 14 is formed. It is formed (see FIG. 5B).

  Next, the spout 15 is inserted into the inner bag 11 from the upper opening 11 f of the inner bag 11.

  Thereafter, the upper opening 11f of the inner bag 11 and the upper opening 12f of the outer bag 12 are aligned and heat sealed together. As a result, the upper opening 11f of the inner bag 11 and the upper opening 12f of the outer bag 12 are integrally sealed to form the hermetic seal portion 13. At the same time, the spout 15a of the spout 15 is also heat-sealed integrally with the inner bag 11 and the outer bag 12, and the spout 15 is fixed to the inner bag 11 and the outer bag 12 by the hermetic seal portion 13 (see FIG. 2).

  As described above, since both the inner bag 11 and the outer bag 12 are made of a cylindrical tube, the inner bag 11 is inserted into the outer bag 12, and the inner bag 11 and the outer bag 12 are aligned to form the lower openings 11 g and 12 g. And the chemical | medical solution storage container 10 can be easily obtained by heat-sealing upper opening 11f, 12f.

DESCRIPTION OF SYMBOLS 1 Chemical solution storage apparatus 2 Metal can 2A Can main body 2B Cover body 2C Upper opening 3 Chemical solution 10 Chemical solution storage container 11 Inner bag 11a Heat seal part 11b Corner part 12 Outer bag 12a Heat seal part 13 Sealing seal part 15 Outlet

Claims (8)

In the chemical storage container for storing chemicals,
An inner bag for storing the chemical,
An outer bag surrounding the inner bag;
A chemical solution storage container comprising an inner bag and a spout extending through the outer bag.   2. The chemical solution storage container according to claim 1, wherein the outer bag has a self-supporting outer shape.   3. The chemical solution storage container according to claim 2, wherein the outer bag has a gusset-type outer shape.   The medical solution storage container according to claim 1, wherein an inner surface of the inner bag has a corner portion, and the corner portion includes a curved surface.   2. The chemical solution storage container according to claim 1, wherein each of the inner bag and the outer bag has a cylindrical bag.   2. The chemical solution storage container according to claim 1, wherein the inner bag and the outer bag have different materials, and the material of the outer bag has better impact resistance and gas barrier properties than the material of the inner bag.   2. The chemical solution according to claim 1, wherein the inner bag and the outer bag have different materials, and the material of the inner bag is made of a material having a lower moisture content, a lower halogen content, and a lower metal ion than the material of the outer bag. Storage container. The chemical solution storage container according to any one of claims 1 to 7,
A chemical solution storage device comprising a metal can having a chemical solution storage container disposed therein.

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