JP7235271B2 - discharge container - Google Patents

Description

In the present invention, an inner layer bag provided in an outer layer bottle is filled with a content containing a volatile component, and the air between the outer layer bottle and the inner layer bag is pressurized by squeeze deformation of the outer layer bottle. The present invention relates to a discharge container configured such that an inner layer bag is compressed by pressurized air to discharge contents.

The applicant of the present application has been developing discharge containers using laminated bottles, and the results of the development are disclosed in, for example, Patent Documents 1 to 8 below.

This conventional discharge container consists of an outer layer bottle having a mouth at the upper end of a squeeze-deformable barrel, and an inner layer bag provided inside the outer layer bottle and having an opening connected to the mouth of the outer layer bottle. , and a nozzle member (plug) attached to the mouth of the outer layer bottle. The outer layer bottle is formed with an introduction hole for introducing outside air between the outer layer bottle and the inner layer bag.

The nozzle member is provided with a discharge path for discharging the fluid content contained in the inner layer bag, and the discharge path is provided with a filter and a check valve. As a filter, a membrane filter or the like is used that blocks the passage of gas in a wet state. prevent intrusions.

JP 2013-233971 A JP 2009-291326 A Japanese Patent Application Laid-Open No. 2009-179403 JP 2005-111094 A JP-A-2004-262470 JP 2002-080055 A Japanese Unexamined Patent Application Publication No. 2001-114328 Japanese Patent Application Laid-Open No. 2001-001389

The operation of discharging the contents can be performed by pinching the outer layer bottle. More specifically, when the contents are fully filled, the inner layer bag is in close contact with the inner surface of the outer layer bottle. The internal pressure rises and the contents are discharged to the outside through the discharge passage. As the content decreases, the inner layer bag shrinks, creating a space between the inner peripheral surface of the outer layer bottle that has been restored to its original shape and the outer peripheral surface of the inner layer bag that is maintained in the contracted state. When the outer layer bottle is squeeze-deformed by pinching in the state where this space is created, the air in the space is pressurized, and the inner layer bag is compressed by this pressurized air, and as a result, the contents are discharged.

The shrinkability of the inner layer bag by pressurized air mainly depends on the thickness of the inner layer bag. Therefore, it is preferable that the thickness of the inner layer bag is small in order to enable the contents to be discharged with a lower pressurized air pressure.

On the other hand, the vapor barrier property of the laminated bottle described above also mainly depends on the thickness of the inner layer bag. This is because the outer layer bottle is formed with an air introduction hole, and can be regarded as if the inner layer bag is exposed to the outside air. Therefore, in order to suppress permeation of volatile components contained in the content, such as water as a solvent, and to improve the stability of the content during long-term storage, it is preferable that the thickness of the inner layer bag is large.

In particular, in recent years, the stability guidelines based on the agreement at the International Conference on Harmonization of Pharmaceutical Regulations (ICH) in Japan, the United States, and Europe require a higher level of stability during long-term storage than before. It is necessary to improve the stability (in other words, the water vapor barrier property) while enabling the full amount of discharge.

In the current product of the present applicant, although there are some thickness differences due to molding errors, the inner layer bag is designed to have a uniform thickness of about 0.1 mm. Therefore, it is necessary to further improve the barrier property while maintaining the shrinkability of the inner layer bag at the same level.

A discharge container of the present invention includes an outer layer bottle, an inner layer bag, and a nozzle member.

The outer layer bottle has a mouth portion and an elastically squeeze deformable body portion. Typically, the upper end of the trunk is integrally provided with a mouth via a shoulder. Further, preferably, a bottom portion is provided integrally with the lower end of the body portion, and the outer layer bottle as a whole is configured as a cylindrical bottle with a bottom. Preferably, the mouth is configured as a relatively thick cylinder so as to be rigid. Preferably, the body has front and rear side walls and left and right side walls, and has a flat cross-sectional tubular shape with a front and rear width smaller than a left and right width. More preferably, the front and rear side walls are relatively thick, and the left and right side walls are relatively thin.

The outer layer bottle is provided with an outside air introduction hole for introducing outside air between the outer layer bottle and the inner layer bag. This outside air introduction hole may be provided in the body, may be provided in the mouth, or may be provided in the bottom. Also, the shape and structure of the outside air introduction hole may be an appropriate one, and may be, for example, a round hole or a slit. Preferably, the outside air introduction hole can be provided in the central portion of at least one of the front and rear side walls. The outside air introduction hole may be closed with a user's finger during squeezing, or a check valve is provided in the outside air introduction hole to allow the introduction of outside air into the outer layer bottle but prevent the outflow of gas from the outer layer bottle. may

An inner layer bag is provided in the body portion of the outer layer bottle. The inner layer bag and the outer layer bottle may be molded simultaneously by blow molding a laminated parison, or the inner layer bag and the outer layer bottle may be molded separately and then the inner layer bag may be inserted into the outer layer bag. Preferably, the inner layer bag has an opening, and this opening is fixed to the mouth of the outer layer bottle by suitable means. Also, the lower end of the inner layer bag may be fixed to the bottom of the outer layer bottle by appropriate means.

The inside of the inner layer bag is filled with a fluid content containing a volatile component. The filling amount is preferably less than 80% by volume, more preferably less than 70% by volume of the full volume of the inner layer bag at the time of shipment, and the remaining volume is filled with gas. The inner layer bag can be shrunk as the contents are reduced.

The nozzle member is attached to the mouth of the outer layer bottle and has a discharge path for discharging the contents inside the inner layer bag to the outside. Preferably, the discharge path of the nozzle member is provided with a filter that blocks passage of gas in a wet state, permitting discharge of the contents of the inner layer bag but preventing the outflow of the gas within the inner layer bag. It is preferable to prevent the gas in the inner layer bag from decreasing during the shrinking process of the inner layer bag.

When the air in the space between the outer layer bottle and the inner layer bag is pressurized by squeezing the outer layer bottle with the outside air introduction hole closed, the inner layer bag is compressed by the pressurized air. Then, the contents are discharged from the discharge path of the nozzle member. When the content has not decreased significantly since shipment, the inner layer bag may be directly compressed by the front and rear side wall portions of the body portion of the outer layer bottle.

Further, even when the remaining amount of the contents is very small, pressing the front and rear side walls of the body of the outer layer bottle inward in the front and rear direction pushes the front and back sides of the inner layer bag inward and forward by the front and rear side walls. Then, the body of the outer layer bottle can be configured to be squeeze deformable until the front and rear side portions of the inner layer bag come into contact with each other. In this case, the gas in the space between the outer layer bottle and the inner layer bag on the left and right sides of the discharge container is pressurized by the squeeze deformation of the outer layer bottle, and the pressurized air also exerts a compressive force on the left and right sides of the inner layer bag. acts to pressurize the inside of the inner layer bag.

The inner layer bag has relatively thick front and rear side portions and relatively thin left and right side portions. In addition, "the front and rear sides are relatively thick" means that the front and rear sides are relatively thick in comparison with the left and right sides, and all the front and rear sides of the inner layer bag are relatively thick. Although it does not have to be a thick portion, it is preferable that a relatively thick portion is provided over a region exceeding 50% of the vertical width of the inner layer bag. In addition, "the left and right side portions are relatively thin" means that the left and right side portions are relatively thin in comparison with the front and rear side portions, and all the left and right side portions of the inner layer bag are relatively thin. Although it does not have to be a portion, it is preferably molded so as to be relatively thin except for portions facing or contacting the mouth portion, shoulder portion, or bottom portion of the outer layer bottle, and portions connected thereto. Moreover, the front and rear side portions are comparatively thicker than the left and right side portions, as long as the thickness is relatively thick on average, and there may be some portions having the same thickness.

The preferred wall thickness varies depending on the type of volatile component contained in the contents, the material, shape and size of the inner layer bag, and the desired shrinkage and stability. For example, if the inner layer bag is made of PP, the content contains water as a volatile component, and stability is required during long-term storage for 12 months, the average wall thickness of the left and right sides is 0.5. 0.6 to 0.10 mm, and the average thickness of the front and rear sides may be 0.10 to 0.20 mm. More preferably, the average thickness of the left and right side portions is 0.08 to 0.10 mm, and the average thickness of the front and rear side portions is 0.15 to 0.17 mm.

The relatively thick front and rear side portions mainly contribute to preventing transpiration of volatile components contained in the contents. On the other hand, the relatively thin left and right side portions contribute to improving the shrinkage deformability of the inner layer bag.

To explain the solution principle in the present invention with a simple example, volatile components permeate and transpire from the entire inner surface of the inner layer bag, and the permeability of the volatile components is inversely proportional to the thickness of the inner layer. Let S be the inner surface area and P be the permeability per unit area and unit time when the wall thickness is 0.1 mm. In this case, the amount of transpiration per unit time from the entire inner surface of the inner layer bag is S·P. The area occupied by the thick portions on the front and rear sides of the inner layer bag is 0.7S, the thickness of the thick portions is (1/1.5)·P, and the area occupied by the thin portions on the left and right sides is 0.3S. Assuming that the thickness of the portion is 1.5P, the amount of transpiration per unit time from the entire inner surface of the inner layer bag is 0.7S×0.66P+0.3S×1.5P≈0.9S·P. The amount can be reduced by about 10%. On the other hand, by making the front and rear side portions of the inner layer bag relatively thick and the left and right side portions relatively thin, the left and right side portions function as bent portions with good flexibility, and the front and rear side portions extend forward and backward. It is possible to prevent the resistance to compression from becoming large, and to improve the contractibility while making the front and rear side portions thick. Therefore, compared with the conventional inner layer having a uniform thickness, the stability during long-term storage can be improved while maintaining the same shrinkability.

Preferably, the front and rear side portions of the inner layer bag may be provided with flat thick-walled portions covering 50% or more of the area thereof, so that the thick-walled portions of the front and rear side portions may extend inward in the front-rear direction while being substantially flat. can be compressed to

Preferably, the outside air introduction hole is provided in the front and rear side walls of the outer layer bottle at a position corresponding to substantially the center of at least one of the front and rear sides of the inner layer bag in the horizontal direction and the vertical direction. When relatively thick portions are provided on the front and rear side wall portions of the barrel portion of the outer layer bottle, the outside air introduction hole can be provided substantially at the center of the relatively thick portion in the horizontal and vertical directions.

According to the present invention, the front and rear sides of the inner layer bag are relatively thick and the left and right sides are relatively thin. The amount of transpiration of the contents is 5% by weight or less in an accelerated test with a test period of 3 months at % RH ± 5% RH, and the inner layer bag contains 5% by weight of the contents at the time of shipment. The discharge container can be configured such that when the front and rear side walls of the body of the outer layer bottle are pressed with a force of 1.0 kgf while remaining, the inner layer bag contracts until the contents are discharged. Therefore, in a discharge container in which the contents are discharged by compressing the inner layer bag by squeeze deformation of the outer layer bottle, the stability of the contents during long-term storage is improved, and even elderly people with weak pinching force can release the contents. can be configured to discharge the entire amount.

In addition, the thickness of the front and rear sides and the thickness of the left and right sides of the inner layer bag were obtained by an accelerated test with a storage condition of 40° C.±2° C./25% RH±5% RH and a test period of 3 months. is set so that the amount of transpiration of the contents of the bottle is 5% by weight or less, and when 5% by weight of the contents at the time of shipment remain in the inner layer bag, there is a gap between the outer layer bottle and the inner layer bag. The inner layer bag may be set to contract until the contents are discharged when the space is pressurized to 200 kPa.

It should be noted that the "transpiration amount of the contents" is more precisely the amount of transpiration of the volatile components contained in the contents, and "the transpiration amount of the contents is 5% by weight or less" means that the test start It means that the transpiration amount of volatile components is 5% by weight or less with respect to the total weight of the contents at the time.

1(a) is a front view, and FIG. 1(b) is AA of FIG. It is a line sectional view (longitudinal sectional view). Fig. 1(a) is an enlarged cross-sectional view (horizontal cross-sectional view) taken along the line BB of Fig. 1(a); FIG. 4 is a transverse cross-sectional view of the body in a state in which the inner layer bag is contracted; FIG. 4 is a vertical cross-sectional view showing a state when the remaining content reaches 5% by weight; 5 is a longitudinal sectional view showing a state in which the outer layer bottle is squeeze-deformed from the state shown in FIG. 4; FIG.

The basic configuration of the present invention is disclosed in the above Patent Documents 1 to 8, and may have the same configuration except for setting the wall thickness of the inner layer bag and the filling rate of the content at the time of shipment. Therefore, illustration of the nozzle member is omitted. In the following description, see Patent Document 1 in particular for the configuration of the nozzle member.

1 and 2 show the shipping state of an outer layer bottle 21 and an inner layer bag 22 of a discharge container according to one embodiment of the present invention. The discharge container according to this embodiment includes a laminated bottle having an inner and outer two-layer structure, which is formed by blow molding a bottomed cylindrical laminated parison, and a nozzle member (spout) attached to the mouth of the laminated bottle. The nozzle member is provided with a discharge path for discharging the contents. In addition, a filter and a plug that seals the discharge path on the upstream side of the filter until the first discharge is provided in the discharge path of the nozzle member. By inverting the laminated bottle and squeezing the body portion by pressing, the content inside the laminated bottle is dripped from the tip nozzle portion through the discharge passage in the nozzle member.

Although shown in an upside-down state in FIG. 1, the laminated bottle has a laminated structure of an outer layer bottle 21 (squeeze bottle) forming an outer layer and an inner layer bag 22 (content containing bag) forming an inner layer. It is The outer layer bottle 21 and the inner layer bag 22 both have a cylindrical mouth portion and a body portion with an elliptical cross section immediately after blow molding. The outer layer bottle 21 can be made of, for example, a synthetic resin material such as PET or SBS, and the inner layer bag 22 is made of a synthetic resin (for example, a polyolefin such as polypropylene or polyethylene) that can be easily peeled off from the outer layer bottle 21. ) and is resistant to electron beam sterilization and gamma ray sterilization. The mouth of the inner layer bag 22 constitutes an opening for discharging the content, and the opening of the inner layer bag 22 is fixedly connected to the mouth of the outer layer bottle 21 .

The outer layer bottle 21 is provided with a cylindrical mouth portion 21C via a shoulder portion 21B whose diameter gradually decreases as it moves upward at the upper end of a body portion 21A that is elastically deformable and has a flat cross-sectional cylindrical shape. It is a thing. A bottom portion 21D is provided at the lower end of the body portion 21A, and the outer layer bottle 21 as a whole is configured in a cylindrical shape with a bottom. The outer layer bottle 21 may have any detailed structure. The left and right side wall portions 21Ab can be configured as flexible thin wall portions.

Further, the outer layer bottle 21 is formed with an introduction hole 3 for introducing outside air between the outer layer bottle 21 and the inner layer bag 22 . The introduction hole 3 is preferably provided in the central portion in the vertical and horizontal directions of the front and rear side walls 21Aa of the body 21A, but can also be provided in the bottom or mouth of the bottle.

The inner layer bag 22 has a film-like body and easily shrinks and deforms as the content decreases. It may have restoring elasticity to the extent that the remaining contents are sucked back to the upstream side of the filter.

As shown in FIG. 1(b), it is preferable to fill the inner layer bag 22 with contents of about 50% to 70% by volume of the full volume of the inner layer bag 22 at the time of shipment. The higher the filling rate of the contents with respect to the full volume of the inner layer bag 22, the more advantageous the transpiration rate of the volatile components contained in the contents. volume) is reduced, and the total discharge performance is deteriorated. Therefore, in optimizing the wall thickness condition of the inner layer bag 22, which will be described later, it is preferable to consider the relationship between the filling rate of the content and the full capacity of the inner layer bag 22.

In the example shown in FIG. 1(b), the inner layer bag 22 is in close contact with the entire inner surface of the outer layer bottle 21 at the time of shipment. The internal volume of the inner layer bag 22 in the deflated state is the "full volume" in the present invention. Further, the "full volume of the inner layer bag" is the maximum volume that can be filled with the contents when the nozzle member is attached, and the inner volume of the inner layer bag may decrease due to the attachment of the nozzle member. The remaining volume of the inner layer bag 22 is filled with gas. Sterilized air, nitrogen, or the like can be used as such gas.

In this embodiment, as shown in FIG. 2, the average thickness of the front and rear side portions of the inner layer bag 22 is larger than the average thickness of the left and right side portions of the inner layer bag 22 in the portion accommodated in the body portion 21A of the outer layer bottle 21. big. In the illustrated example, the front and rear side portions of the inner layer bag 22 are relatively thicker than the left and right side portions, mainly at the portions facing the front and rear side wall portions 21Aa of the outer layer bottle 21 . Such control of the thickness of the inner layer bag 22 can be achieved, for example, by molding the front and rear side portions relatively thickly when injection molding a laminated parison for blow molding, or by molding conditions for blow molding. can be performed by optimization of

It is preferable that the left and right side portions and the bottom portion of the inner layer bag 22 are formed relatively thin, and the mouth portion of the inner layer bag 22 is formed relatively thick.

Thick portions of the front and rear sides of the inner layer bag 22 facing the front and rear side walls 21Aa of the outer layer bottle 21 are flat as shown in FIG. As shown in FIG. 3, it maintains a substantially flat state even when moving.

The amount of gas filled in the inner layer bag 22 at the time of shipment is constant even when the inner layer bag 22 shrinks. FIG. 4 shows a state in which 5% by weight of the content remains in the inner layer bag 22 at the time of shipment. 22 can be further compressed. Therefore, when the outer layer bottle 21 is squeeze-deformed as shown in FIG. 5, the air in the space between the outer layer bottle 21 and the inner layer bag 22 is first pressurized, and the inner layer bag 22 is compressed by the pressurized air. As a result, the internal pressure of the inner layer bag 22 rises, and this internal pressure enables the entire contents to be discharged. In this embodiment, the opening of the inner layer bag is also not deformed, so if a small amount of the contents flows into the opening during ejection, the filling rate of the contents with respect to the full volume of the inner layer bag at the time of shipment is maximized. However, it is preferable that the inner layer bag can be compressed until the entire content is discharged by suppressing the volume to about 80% by volume and filling the remaining volume with gas.

When the inner layer bag is made of PP, the full volume at the time of shipment is 10 mL, the content at the time of shipment is 5 mL, and the contents are filled with eye drops containing water as a solvent, the storage conditions are 40 ° C ± 2 ° C / 25% RH. In an accelerated test with a test period of 3 months at ±5% RH, the amount of transpiration of the contents is suppressed to 5% by weight or less, and even elderly people with relatively weak strength can relatively easily discharge the entire amount by squeezing the bottle. In order to be able to perform It is considered preferable that the thickness is 0.10 to 0.20 mm and the average thickness of the left and right sides is 0.06 to 0.10 mm. In order to ensure the strength of the left and right sides, the minimum thickness of the left and right sides can be set to 0.06 mm. The minimum wall thickness of the front and rear sides can be 0.10 mm.

It is conceivable that the preferred wall thickness conditions also vary depending on the ratio of the short diameter (that is, front-rear width) to the long diameter (that is, left-right width) of the bottle body shape shown in FIG. . When the front and rear sides are formed flat so that the recess amount D of the front and rear sides from the short diameter side top of the elliptical contour shape is constant, the larger the oblateness, the shorter diameter side top X of the elliptical imaginary contour shape. is increased, and the width of the flat front and rear side portions is reduced. According to the analysis using computer simulation by the inventor of the present application, when the flatness is 70%, the front and rear sides of the inner layer bag have a predetermined uniform thickness within the range of 0.15 to 0.19 mm, and the left and right sides have a predetermined uniform thickness. Good results were obtained in terms of both the transpiration amount of the contents and the shrinkage of the inner layer during long-term storage when the portion had a predetermined uniform thickness within the range of 0.06 to 0.10 mm. On the other hand, when the flatness is 75%, the front and rear sides of the inner layer bag have a predetermined uniform thickness within the range of 0.15 to 0.17 mm, and the left and right sides have a predetermined uniform thickness within the range of 0.08 to 0.10 mm. In the case of a predetermined uniform wall thickness, good results were obtained in terms of both the transpiration amount of the contents and the shrinkage of the inner layer during long-term storage.

The nozzle member is formed with a discharge path for discharging the contents inside the inner layer bag 22 to the outside, as disclosed in Patent Document 1. It is preferable to provide a filter in the middle of the discharge passage, which allows the outflow of the contents but prevents the inflow of outside air. Further, it is preferable to provide a plug or a valve for closing the discharge path during storage in the discharge path on the upstream side (inside the container) of the filter. As the valve body, an appropriate valve body such as the check valve disclosed in Patent Document 2 can be used.

The above filters include membrane filters, sintered filters, hydrophilic porous flat membranes, hydrophobic porous flat membranes, etc. Pathogenic microorganisms from the downstream side of the filter (outside the container) to the upstream side (inside the container) or a substance capable of preventing permeation of viruses can be used as appropriate.

The plug body can be liquid-tightly fitted into a fitting portion provided in the middle of the discharge passage. By pushing the stopper into the fitting portion from above, it is possible to generate a fitting force that prevents the stopper from being separated from the fitting portion due to a slight increase in the internal pressure of the bottle or vibration during bottle storage or transportation. can.

When the first discharge is performed, the container is erected with the cap covering the nozzle member attached, and the introduction hole is closed with a finger to squeeze deform the body of the bottle and increase the internal pressure of the inner layer bag 22. As a result, the plug can be separated from the fitting portion by the internal pressure. At the time of the first ejection, the air between the filter and the stopper is pushed out from the still dry filter, and after that, the content immediately below the filter is filled with the content. Always wet.

When the second and subsequent discharges are performed, since the inside of the inner layer bag 22 is always in communication with the filter, the squeezing force of the body of the bottle for discharge is lightened, and the discharge operation can be performed smoothly. In addition, since outside air cannot pass through the wet filter, the outside air is not introduced to the upstream side of the filter from the second time onwards, and ejection failure due to occurrence of an airlock state does not occur. Furthermore, the resilience of the inner layer bag 22 allows the liquid agent remaining in the downstream side of the filter, that is, in the discharge nozzle portion, to be sucked back to the upstream side of the filter, thereby preventing the propagation of bacteria in the nozzle portion. .

When such a filter is provided in the discharge path, it is preferable to design the wall thickness of the inner layer bag 22 taking into consideration the increase in flow resistance due to the filter.

The present invention is not limited to the above embodiments, and can be modified in design as appropriate. For example, the shape, structure, and size of the outer layer bottle may be appropriate, and may be a simple cylindrical bottle, a tubular food bottle, or the like. In addition, the contents can contain volatile components such as water, alcohol, and vinegar, and the volatile components may be contained as solvents or dispersants, or may be contained as active ingredients. Moreover, the contents are not limited to liquids, and may be in a state having fluidity such as gel or paste. Furthermore, the contents may be liquid preparations, foods such as mayonnaise and soy sauce, and cosmetics such as moisturizing creams and hair styling products.

Claims (5)

an outer layer bottle having a mouth and an elastically squeeze deformable body;
a shrinkable inner layer bag provided in the body portion of the outer layer bottle, filled with a fluid content containing a volatile component, and shrinkable;
a nozzle member attached to the mouth of the outer layer bottle and having a discharge path for discharging the contents in the inner layer bag to the outside;
The outer layer bottle is provided with an outside air introduction hole for introducing outside air between the outer layer bottle and the inner layer bag,
When the air in the space between the outer layer bottle and the inner layer bag is pressurized by squeezing the outer layer bottle with the outside air introduction hole closed, the inner layer bag is compressed by the pressurized air. In a discharge container in which the content is discharged from the discharge channel of the nozzle member,
The inner layer bag has relatively thick front and rear side portions and relatively thin left and right side portions at the portion housed in the body portion of the outer layer bottle. The discharge container , wherein the substantially thick portion is provided over a region exceeding 50% of the vertical width of the inner layer bag . A dispensing container according to claim 1,
The body portion of the outer layer bottle has a front and rear side wall portion and a left and right side wall portion, and is configured in a flat cylindrical cross section with a front and rear width smaller than a left and right width, and presses the front and rear side wall portions inward in the front and rear direction. Thus, the discharge container can be squeeze-deformed until the front and rear side portions of the inner layer bag, which are pushed forward and backward inward by the front and rear side wall portions, come into contact with each other. In the discharge container according to claim 1 or 2,
The discharge container, wherein the outside air introduction hole is provided at a position corresponding to substantially the center in the horizontal direction and the vertical direction of at least one of the front and rear side portions of the inner layer bag. In the discharge container according to claim 1, 2 or 3,
The inner layer bag is filled with less than 80% by volume of the contents with respect to the full volume of the inner layer bag at the time of shipment, and the remaining volume is filled with gas,
Furthermore, the thickness of the front and rear sides and the thickness of the left and right sides of the inner layer bag are
It is set so that the amount of transpiration of the contents is 5% by weight or less when an accelerated test is performed for a test period of 3 months under storage conditions of 40°C ± 2°C / 25% RH ± 5% RH,
When the front and rear side walls of the body of the outer layer bottle are pressed with a force of 1.0 kgf when 5% by weight of the contents at the time of shipment remain in the inner layer bag, the inner layer is kept until the contents are discharged. The bag is set to shrink,
discharge container. In the discharge container according to claim 1, 2 or 3,
The inner layer bag is filled with less than 80% by volume of the contents with respect to the full volume of the inner layer bag at the time of shipment, and the remaining volume is filled with gas,
Furthermore, the thickness of the front and rear sides and the thickness of the left and right sides of the inner layer bag are
It is set so that the amount of transpiration of the contents is 5% by weight or less when an accelerated test is performed for a test period of 3 months under storage conditions of 40°C ± 2°C / 25% RH ± 5% RH,
When the space between the outer layer bottle and the inner layer bag is pressurized to 200 kPa when 5% by weight of the content remains in the inner layer bag at the time of shipment, the inner layer bag is discharged until the content is discharged. is set to shrink,
discharge container.

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