Transfer and filling system and transfer and filling method

Abstract

To provide a transferring and filling system in which a content is discharged from a sub-container with the pressure of gas which has been transferred and filled, and the sub-container is easily filled with diluent.SOLUTION: A transferring and filling system comprises: a master container 10 filled with a content 4 for transferring and filling; and a sub-container 20 for diluting concentrated original liquid C transferred for filling from the master container 10 and discharging the content 4 with the pressure of liquid gas P transferred for filling from the master container 10. The content 4 is divided into a liquid phase L and a gas phase G in the master container 10. The master container 10 comprises a valve 12 having a liquid lead-out hole 12b3 communicating with the liquid phase L for leading-out the liquid and a gas lead-out hole 12b4 communicating with the gas phase G for leading-out the gas. The sub-container 20 comprises a container body 21 having an opening 21a for filling diluent D, a lid body 22 capable of re-sealing the opening 21a, a discharge mechanism 23 for discharging the content 4, and a valve mechanism 24 for transferring and filling the content 4.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a transfer and filling system that utilizes the pressure inside a parent container to transfer and fill contents containing liquefied gas into a child container, and in particular to a transfer and filling system in which the contents to be transferred further include a concentrated concentrate and are diluted to an appropriate concentration inside the child container. [Background technology]

[0002] Patent Document 1 discloses that a main can with a large internal capacity and a portable secondary can with a small internal capacity are provided, and the liquid content is transferred and filled into the secondary can by utilizing the pressure inside the main can.

[0003] Furthermore, Patent Document 2 discloses that a consumer can dilute a concentrate to an appropriate concentration by filling a dispenser filled with water. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5784343 [Patent Document 2] Special Publication 2001-517182 Summary of the Invention [Problem to be solved by the invention]

[0005] In Patent Document 1, the main can has a dual structure in which the propellant and the liquid content are separately contained, and the propellant is not transferred to the secondary can. Therefore, the secondary can also has a dual structure, and the transferred liquid content is discharged using the propellant that is pre-filled in the secondary can. However, with this mechanism, the filling into the secondary can must be done against the pressure of the propellant, making it difficult for consumers to fill the secondary can with water.

[0006] In Patent Document 2, the dispenser is not pressurized, so consumers can easily fill it with water, but the contents cannot be discharged using gas pressure.

[0007] The present invention aims to provide a transfer and filling system that can eject the contents from a secondary container using the pressure of the transferred gas and that also makes it easy to fill a diluent into the secondary container, and a transfer and filling method using the transfer and filling system. [Means for solving the problem]

[0008] The transfer and filling system of the present invention comprises a master container 10 filled with contents 4 for transfer and filling, which contain concentrated concentrate C and liquefied gas P; slave containers 20, 20A, 20B that dilute the concentrated concentrate C transferred and filled from the master container 10 and discharge the contents 4 under the pressure of the liquefied gas P transferred and filled from the master container 10; and connecting means 30 that connects the master container 10 and the slave containers 20, 20A, 20B for transfer and filling. The contents 4 are divided into a liquid phase L containing concentrated concentrate C and liquid liquefied gas P1 and a gas liquefied phase L containing concentrated concentrate C and liquid liquefied gas P1 within the master container 10. The container is characterized in that it is divided into a gas phase G containing gas P2, and the parent container 10 is equipped with a valve 12 having a liquid outlet hole 12b3 that communicates with the liquid phase L of the contents 4 and discharges the liquid, and a gas outlet hole 12b4 that communicates with the gas phase G of the contents 4 and discharges the gas, and the child container 20 is equipped with a container body 21 having an opening 21a for filling with diluent D, a lid 22 that can reseal the opening 21a, a discharge mechanism 23 for discharging the contents 4, and a valve mechanism 24 for transferring and filling the contents 4.

[0009] In the above-described transfer and filling system, it is preferable that the liquid liquefied gas P1 is separated in the upper layer of the liquid phase L, and the liquid outlet hole 12b3 communicates with the lower layer of the liquid phase L. Furthermore, the discharge mechanism 23 and the valve mechanism 24 may be configured as a single aerosol valve.

[0010] The transfer and filling method of the present invention is a transfer and filling method using any of the transfer and filling systems described above, and is characterized in that it fills diluent D into child containers 20, 20A, and 20B, closes opening 21a with lid 22 to create a sealed state, connects parent container 10 and child containers 20, 20A, and 20B, maintains the connected state until the pressure in parent container 10 and the pressure in child containers 20, 20A, and 20B are equilibrated, and then releases the connected state between parent container 10 and child containers 20, 20A, and 20B. [Effects of the Invention]

[0011] In the transfer and filling system of the present invention, the contents including the liquefied gas in gas form are transferred from the parent container to the secondary container, and the contents can be discharged from the secondary container by the pressure of the liquefied gas. Furthermore, since the secondary container does not need to constantly maintain internal pressure for discharging, consumers can easily fill the secondary container with diluent.

[0012] Furthermore, if the liquid liquefied gas is separated in the upper liquid phase layer and the liquid outlet hole is connected to the lower liquid phase layer, the liquid liquefied gas will vaporize even if the volume of the contents in the parent container decreases due to transfer and filling, so fluctuations in pressure inside the parent container before and after transfer and filling can be suppressed. Furthermore, if the discharge mechanism and valve mechanism are configured as a single aerosol valve, costs can be reduced.

[0013] In the filling and transfer method of the present invention, the connection state is maintained until the pressure in the parent container and the pressure in the child container are balanced, i.e., until the transfer and filling of the contents from the parent container to the child container automatically stops, so that a nearly constant amount of contents can be transferred and filled each time, and variations in the dilution concentration can be suppressed. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a cross-sectional view showing a transfer and filling system of the present invention. [Figure 2] FIG. 2 is a cross-sectional view of a main part of a parent container. [Figure 3] FIG. 10 is an explanatory diagram showing a transfer and filling method. [Figure 4] FIG. 10 is a cross-sectional view showing another sub-container. [Figure 5] FIG. 10 is a cross-sectional view showing yet another sub-container. DETAILED DESCRIPTION OF THE INVENTION

[0015] Next, the transfer and filling system of the present invention will be described in detail with reference to the drawings. As shown in Fig. 1, the transfer and filling system 1 comprises a parent container 10, a child container 20, and a connecting means 30 for connecting the parent container 10 and the child container 20. Then, as shown in Fig. 3, by connecting (connecting) the child container 20 to the parent container 10, the contents 4 are transferred from the parent container 10 to the child container 20. Each component will be described in detail below.

[0016] The parent container 10 includes a container body 11 having an opening 11a at the top end, and a valve 12 that closes the opening 11a of the container body 11.

[0017] The container body 11 is made of a metal such as aluminum and includes a bottom 11b, a body 11c rising from the outer peripheral edge of the bottom 11b, and a shoulder 11d extending upward from the upper end of the body 11c while gradually reducing in diameter. The opening 11a opens at the upper end of the shoulder 11d, and a bead 11e is provided around the opening 11a.

[0018] The valve 12 is a so-called aerosol valve comprising a cylindrical stem 12a with a bottom having a stem hole 12a1 on the side, a housing 12b that accommodates the stem 12a so that it can move up and down, an elastic body (spring) 12c that constantly urges the stem 12a upward, a roughly doughnut-shaped stem rubber 12d that blocks the stem hole 12a1 with its inner surface when the stem 12a is urged upward and bends on its inner side to open the stem hole 12a1 when the stem 12a is pressed in, a mounting cup 12e that fixes the housing 12b to the container body 11, and a tube 12f attached to the housing 12b.

[0019] The housing 12b of the valve 12 has two holes. Specifically, as shown in FIG. 2, holes are provided in the bottom 12b1 and the side 12b2 of the bottomed, cylindrical housing 12b. The hole in the bottom 12b1 communicates with the tube 12f and, when the parent container 10 is upright, communicates with the liquid phase L of the contents 4 via the tube 12f. Therefore, it functions as a liquid outlet hole 12b3 for discharging the liquid of the contents 4. On the other hand, the hole in the side 12b2 communicates with the gas phase G of the contents 4 when the parent container 10 is upright. Therefore, it functions as a gas outlet hole 12b4 for discharging the gas of the contents 4. When the parent container 10 is inverted, the hole in the bottom 12b1 functions as the gas outlet hole 12b4, and the hole in the side 12b2 functions as the liquid outlet hole 12b3.

[0020] The cross-sectional area of ​​the gas outlet hole 12b4 is 0.05 to 0.7 mm 2 The cross-sectional area of ​​the liquid outlet hole 12b3 is preferably 0.15 to 2.0 mm 2 Preferably, the cross-sectional area of ​​gas outlet hole 12b4 is smaller than the cross-sectional area of ​​liquid outlet hole 12b3, and more preferably, gas outlet hole / liquid outlet hole = 0.1 to 0.7. Furthermore, the cross-sectional area of ​​gas outlet hole 12b4 is preferably 5 times or less the cross-sectional area of ​​stem hole 12a1, and more preferably, gas outlet hole / stem hole = 0.5 to 3. In these cases, when the pressure difference between primary container 10 and secondary container 20 becomes small after transferring and filling the content 4, the transfer and filling of liquid automatically stops, and thereafter, only gas tends to be transferred and filled, and the amount of transfer and filling remains stable even when the transfer and filling is repeated.

[0021] In the valve 12 configured as described above, the outer edge of the mounting cup 12e is crimped onto the bead portion 11e of the container body 11, thereby closing the opening 11a of the container body 11.

[0022] The secondary container 20 comprises a container body 21 having an opening 21a at the upper end, a lid 22 that closes the opening 21a of the container body 21, a discharge mechanism 23 for discharging the contents 4, and a valve mechanism 24 for transferring and filling the contents 4.

[0023] The container body 21 is a pressure-resistant container made of a synthetic resin such as polyethylene terephthalate, and as shown in FIG. 1, it includes a bottom 21b, a body 21c rising from the outer circumferential edge of the bottom 21b, a shoulder 21d extending upward from the upper end of the body 21c while gradually reducing in diameter, and a cylindrical neck 21e extending from the upper end of the shoulder 21d. The opening 21a is provided at the upper end of the neck 21e. The outer periphery of the neck 21e is provided with a male thread 21f for screwing on the lid 22. The bottom 21b is provided with a bottom hole 21g. A lower cylindrical portion 21h for attaching the valve mechanism 24 extends from the periphery of the bottom hole 21g. The outer periphery of the lower cylindrical portion 21h is provided with a male thread 21i for threadably engaging with the connecting means 30. Furthermore, when the child container 20 is placed upright, a substantially cylindrical base cup 25 is attached to the outer periphery of the bottom portion 21b so that the lower cylinder portion 21h and the valve mechanism 24 do not come into contact with the installation surface such as the floor.

[0024] The lid 22 is a screw cap with a female thread 22a that screws into the male thread 21f of the neck 21e, and is detachable from the container body 21. When the lid 22 is removed, the container body 21 communicates with the outside air, and the pressure inside the container body 21 becomes equal to the pressure of the outside air (atmospheric pressure). When the lid 22 is attached, the container body 21 is sealed. In other words, the lid 22 allows the opening 21a of the container body 21 to be resealed.

[0025] The discharge mechanism 23 is a so-called aerosol valve, including a cylindrical stem 23a with a stem hole 23a1 on its side, a housing 23b that accommodates the stem 23a so that it can move up and down, an elastic body (spring) 23c that constantly urges the stem 23a upward, a roughly doughnut-shaped stem rubber 23d that closes the stem hole 23a1 with its inner circumferential surface when the stem 23a is urged upward and bends its inner circumferential side to open the stem hole 23a1 when the stem 23a is pushed in, and a tube 23f attached to the housing 23b. The discharge mechanism 23 is integrated with the lid 22 by fixing the outer periphery of a flange portion 23b1 of the housing 23b to the inner circumferential surface of the lid 22. The stem 23a protrudes from a hole provided in the top surface 22b of the lid 22, allowing communication between the inside and outside of the container body 21. The stem rubber 23d is sandwiched between the top surface 22b of the lid 22 and the flange portion 23b1 of the housing 23b. In Fig. 1, the reference numeral 22c denotes a sealing material that is compressed and tightly adhered when the lid 22 is screwed onto the container body 21, thereby assisting the lid 22 in resealing the container body 21.

[0026] The valve mechanism 24 is a so-called aerosol valve, comprising a cylindrical stem 24a with a stem hole 24a1 on its side, a housing 24b that accommodates the stem 24a so that it can move up and down, an elastic body (spring) 24c that constantly biases the stem 24a downward, and a roughly doughnut-shaped stem rubber 24d that closes the stem hole 24a1 with its inner circumferential surface when the stem 24a is biased downward and bends its inner circumferential surface to open the stem hole 24a1 when the stem 24a is pushed in. The valve mechanism 24 is fixed to the lower cylindrical portion 21h of the container body 21 via a valve fixture 26 that covers the bottom and side surfaces of the housing 24b. The stem 24a protrudes downward from the valve fixture 26, allowing communication between the inside and outside of the container body 21. The stem rubber 24d is sandwiched between the valve fixture 26 and the housing 24b. The valve fixture 26 is fixed by adhesive, welding, press fitting, or the like.

[0027] The connecting means 30 includes a connecting element 31 that connects the stem 12a of the parent container 10 to the stem 24a of the valve mechanism 24 of the child container 20. The connecting element 31 is cylindrical and has an internal passage for allowing the contents 4 supplied from the parent container 10 to flow toward the child container 20. The connecting means 30 also includes a connecting aid 32 that assists in connecting the stems together. The connecting aid 32 includes a generally doughnut-shaped base 32a, an engaging portion 32b that extends from the underside of the base 32a and engages with the inner surface of the mounting cup 12e, and an upper tube portion 32c that extends from the top surface of the base 32a and connects to the lower tube portion 21h of the child container 20. The inner peripheral surface of the upper tube portion 32c is provided with a female thread 32d that threadably engages with the male thread 21i of the lower tube portion 21h.

[0028] Content 4 contains concentrated concentrate C and liquefied gas P. Concentrated concentrate C is intended to be diluted to an appropriate concentration with a diluent D, such as tap water or mineral water, before use. It is not limited to concentrates obtained by concentrating a fixed concentration. Liquefied gas P is, for example, a liquefied petroleum gas, such as propane or butane, and is separated into liquid and gas within parent container 10. In other words, parent container 10 is filled with the liquid to the extent that at least liquid liquefied gas P1 is present. Within parent container 10, content 4 is separated into a liquid phase L containing concentrated concentrate C and liquid liquefied gas P1, and a gas phase G containing gas liquefied gas P2. Furthermore, liquid phase L is separated into an upper layer of liquefied gas P1 and a lower layer of concentrated concentrate C. However, although liquid phase L is separated into an upper layer of liquefied gas P1 and a lower layer of concentrated concentrate C, some of the liquefied gas may be dissolved in the concentrated concentrate C. Furthermore, the liquid phase L may be a single layer in which the liquefied gas P1 and the concentrated liquid C are dissolved and not separated, or the liquefied gas P1 and the concentrated liquid C may be emulsified to form an emulsified layer. Tube 12f of parent container 10 opens into the concentrated liquid C in the lower layer, and the concentrated liquid C is discharged from liquid discharge hole 12b3 communicating with the lower layer. If the liquefied gas P1 is dissolved in the concentrated liquid C or if the concentrated liquid C and the liquefied gas P1 are emulsified, the liquefied gas P1 is naturally also discharged.

[0029] Next, the transfer and filling method will be described with reference to Figure 3. First, the diluent D is filled into the container body 21 of the secondary container 20 (S1). Filling is performed through the opening 21a from which the lid 22 has been removed. Because the lid 22 has been removed, the pressure inside the container body 21 is the same as atmospheric pressure. A scale 21j may be provided on the side of the container body 21 as a guide when filling the diluent D.

[0030] After the diluent is filled, the opening 21a of the container body 21 is closed with the lid 22 to seal the secondary container 20 (S2).

[0031] Next, while the tip of the stem 24a of the valve mechanism 24 of the secondary container 20 is inserted into the connector 31, the male thread 21i of the lower tubular portion 21h of the secondary container 20 is screwed into the female thread 32d of the connection aid 32 fixed to the primary container 10 (S3). As the secondary container 20 is rotated in the screwing direction, the position of the stem 24a of the secondary container 20 gradually lowers, eventually pushing in the stem 12a of the primary container 10, and the valve 12 opens. At the same time, the stem 24a of the secondary container 20 is also pushed in, so the valve mechanism 24 also opens, and the primary container 10 and the secondary container 20 enter communication. The primary container 10 is pressurized by the liquefied gas P, so the internal pressure is higher than that of the secondary container 20. Therefore, the pressure of the liquefied gas P causes the content 4 to be transferred from the primary container 10 to the secondary container 20. Since the valve 12 has a liquid outlet hole 12b3 and a gas outlet hole 12b4, both the liquid and the gas are transferred and filled into the secondary container 20.

[0032] The connected state is maintained for a while, and when the difference in pressure between the primary container 10 and the secondary container 20 becomes small, the liquid stops being transferred and only the gas begins to be transferred. Then, when the pressures in the primary container 10 and the secondary container 20 are equalized, the transfer and filling automatically stops. In this state, the secondary container 20 is rotated in the opposite direction to the screw connection, which releases the connection between the primary container 10 and the secondary container 20 and completes the transfer and filling (S4). Note that the valve 12 of the primary container 10 and the valve mechanism 24 of the secondary container 20 are closed as the primary container 10 and the secondary container 20 are separated, so the contents 4 do not leak out.

[0033] In the transfer and filling system 1 configured as described above, liquefied gas P is used as the propellant for the primary container 10, so the internal pressure of the primary container 10 remains approximately constant before and after transfer and filling. Furthermore, the pressure inside the secondary container 20 is reset by removing the lid 22, and the pressure difference between the primary container 10 and the secondary container 20 remains constant. Therefore, the amount of content 4 transferred and filled remains approximately constant no matter how many times the transfer and filling is performed. As long as the amount of diluent D is constant, the concentrated concentrate C can be diluted to an appropriate concentration each time. Furthermore, because liquefied gas P is transferred and filled from the primary container 10 each time as the propellant for discharging the content 4 from the secondary container 20, the pressure inside the secondary container 20 can be set to atmospheric pressure before the transfer and filling, making it easy for even consumers to fill the diluent D.

[0034] The secondary container 20 is used as an aerosol product (discharge product) filled with a concentrate diluted to an appropriate concentration and a propellant for discharging the concentrate. Specifically, the stem 23a of the discharge mechanism 23 is pressed as needed, and the contents 4 are discharged by the pressure of the liquefied gas P. After all of the contents 4 have been discharged, the lid 22 is removed, and the above-mentioned transfer and filling method can be used repeatedly.

[0035] The transfer and filling system 1 allows consumers to use diluent D that is readily available at home or at the point of use, so multiple bottles of aerosol product can be produced from a single parent container 10. This reduces the energy required to transport multiple bottles of aerosol product, and also conserves resources because the material of the child container 20 can be reused. It also saves consumers the trouble of having to purchase and carry multiple bottles of aerosol product.

[0036] FIG. 4 shows another secondary container 20A. This secondary container 20A uses a check valve as the valve mechanism 24. The check valve includes a connecting tube 27 that protrudes downward from a valve fixture 26 and a generally cylindrical valve member 28 that elastically closes a hole 27a in the side of the connecting tube 27 from the outside. The connecting tube 27 is connected to the stem 12a of the primary container 10 via a connector 31. The valve member 28 is made of, for example, synthetic rubber, and when pressure is applied from the primary container 10, a portion of the valve member 28 rises to allow communication between the primary container 10 and the secondary container 20A. When the pressure difference between the primary container 10 and the secondary container 20A is eliminated or when the secondary container 20A is under atmospheric pressure, the valve member 28 adheres tightly to the outer surface of the connecting tube 27, preventing leakage of the contents 4 from the valve mechanism 24. In addition to the check valve described above, various other known configurations may be used.

[0037] The parent container 10 used is the same as that shown in Fig. 1. Other components are also similar to those of the child container 20 shown in Fig. 1, so the same reference numerals are used and detailed description will be omitted.

[0038] FIG. 5 shows yet another secondary container 20B. While the secondary containers 20 and 20A shown in FIGS. 1 and 4 have the discharge mechanism 23 and valve mechanism 24 as separate components, the secondary container 20B also uses the discharge mechanism 23 as the valve mechanism 24. In other words, the discharge mechanism 23 and valve mechanism 24 are configured as a single aerosol valve. Even with this configuration, transfer and filling can be performed in the same way as the secondary container 20 shown in FIG. 1. Furthermore, as with the other secondary transfer and filling systems 1 described above, if the connection between the primary container 10 and the secondary container 20B is maintained for a while, and the pressure difference between the primary container 10 and the secondary container 20B becomes small and no longer sufficient to lift the liquid, the liquid will no longer be transferred and only the gas will be transferred and filled. This means that the concentrated concentrate C will not remain within the discharge mechanism 23 (e.g., within the stem 23a, the housing 23b, or the tube 23f) but will be sent into the container body 21, preventing the problem of the concentrated concentrate C starting to come out.

[0039] Furthermore, since there is no need to provide the lower tube portion 21h, there is also no need to provide the base cup 25. If the base cup 25 is omitted, it is preferable that the bottom shape be such that the child container 20B can stand on its own. Furthermore, only the connecting tool 31 is used as the connecting means 30, and the connecting aid 32 is omitted. The connecting aid 32 can also be omitted in the configurations shown in Figures 1 and 4.

[0040] Other configurations are the same as those of the sub-container 20 in FIG. 1, so the same reference numerals are used and detailed description will be omitted.

[0041] Although the above describes an embodiment of the present invention, the present invention is not limited to the above embodiment and can be implemented with various modifications within the scope of the present invention. For example, while a liquid is used as the diluent D, a solid such as a powder or granules may also be used. While an aerosol valve that opens when the stem is pushed in may be used, a valve that opens when the stem is tilted may also be used. While the connector 31 of the connecting means is a single component, it may be integrated with the stems 12a, 23a, 24a or the connecting tube 27 of the parent container 10 or the child containers 20, 20A, 20B. In other words, the stems 12a, 23a, 24a or the connecting tube 27 may be provided with the connecting means 30. [Explanation of symbols]

[0042] 1 Transfer and filling system 10 Parent container 11 Container body 11a opening 11b Bottom 11c Torso 11d Shoulder 11e Bead part 12 valves 12a stem 12a1 stem hole 12b Housing 12b1 bottom 12b2 Side part 12b3 Liquid outlet hole 12b4 Gas outlet hole 12c spring 12d stem rubber 12e Mounting Cup 12f tube 20, 20A, 20B Sub-container 21 Container body 21a opening 21b bottom 21c Torso 21d Shoulder 21e Neck 21f male thread 21g bottom hole 21h Lower cylinder part 21i male thread 21j scale 22 Lid 22a female thread 22b Top 23 Discharge mechanism 23a stem 23a1 stem hole 23b Housing 23b1 Flange part 23c spring 23d stem rubber 23f tube 24 Valve mechanism 24a stem 24a1 stem hole 24b Housing 24c spring 24d stem rubber 25 Base Cup 26 Valve Fixture 27 Connecting tube 27a hole 28 Valve material 30 Connection means 31 Connector 32 Connection aids 32a base 32b Engagement part 32c Upper cylinder part 32d female thread 4 Contents C concentrated stock solution P liquefied gas P1 Liquid liquefied gas P2 Liquefied gas D. Diluent L liquid phase G gas phase

Claims

1. a parent container filled with a content for transfer containing a concentrated concentrate and a liquefied gas; a secondary container that dilutes the concentrated concentrate transferred from the primary container and discharges the contents using the pressure of the liquefied gas transferred from the primary container; a connecting means for connecting the parent container and the child container for transfer and filling; The contents are separated into a liquid phase having a concentrated concentrate and a liquid liquefied gas and a gas phase having a gas liquefied gas within the parent container, The liquid liquefied gas separates in the upper layer of the liquid phase, the parent container is provided with a valve having a liquid outlet hole communicating with the liquid phase of the contents to discharge the liquid, and a gas outlet hole communicating with the gas phase of the contents to discharge the gas, The liquid outlet hole is in communication with the lower layer of the liquid phase, A transfer and filling system in which a sub-container comprises a container body having an opening for filling a diluent, a lid body capable of resealing the opening, a discharge mechanism for discharging the contents, and a valve mechanism for transferring and filling the contents.

2. 2. The transfer and filling system according to claim 1, wherein the discharge mechanism and the valve mechanism are configured as a single aerosol valve.

3. A method for transferring and filling using the transfer and filling system according to claim 1 or 2, Fill the sub-container with diluent, The opening is closed with a lid to create a sealed state, A transfer and filling method in which a parent container and a child container are connected, the connected state is maintained until the pressures in the parent container and the child container are balanced, and then the connected state between the parent container and the child container is released.

Images