JP2019199261A - Discharge vessel - Google Patents

Abstract

To provide a discharge vessel configured to be filled with a content containing volatile components in an inner layer bag provided in an outer layer bottle, and discharge the content as the inner layer bag is compressed by pressurized air when the air between the outer layer bottle and the inner layer bag is pressurized due to the squeeze deformation of the outer layer bottle, so as to reduce the transpiration amount of the volatile components during a long-time storage while enabling discharging the whole content with a relatively light squeeze force or pinching force.SOLUTION: An inner layer bag 22 has its front and rear sides thicker than its right and left sides. And the thick parts restrict the permeation/transpiration amount of volatile components, and, at the same time, the flexibility of the right and left sides makes the inner layer bag 22 well retractile.SELECTED DRAWING: Figure 3

Description

  In the present invention, the inner layer bag provided in the outer layer bottle is filled with the content containing the volatile component, and when 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 bag is compressed by pressurized air and the contents are discharged.

  The applicant of the present application has conventionally developed a discharge container using a laminated bottle, and the development results are disclosed in, for example, the following Patent Documents 1 to 8.

  This conventional discharge container has an outer layer bottle having a mouth provided at the upper end of a squeeze-deformable body, 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 (a cap) attached to the mouth of the outer layer bottle. The outer layer bottle has 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 passage for discharging the flowable contents contained in the inner layer bag, and a filter and a check valve are provided in the discharge passage. A filter such as a membrane filter that blocks the passage of gas in a wet state is used as a filter, thereby preventing the outside air from flowing into the inner layer bag through the discharge path, and viruses and bacteria floating in the outside air. Stop the invasion of the kind.

JP 2013-233971 A JP 2009-291326 A JP 2009-179403 A JP 2005-111094 A JP 2004-262470 A JP 2002-080055 A JP 2001-114328 A JP 2001-001389 A

  The discharge operation of the contents can be performed by pinching the outer layer bottle. More specifically, when the contents are fully filled, since the inner layer bag is in close contact with the inner surface of the outer layer bottle, the pressing force of the outer layer bottle directly acts on the inner layer bag and the inner layer bag shrinks and deforms. The internal pressure rises and the contents are discharged to the outside through the discharge path. As the contents decrease, the inner layer bag shrinks, and a space is created between the inner peripheral surface of the outer layer bottle restored to its original shape and the outer peripheral surface of the inner layer bag maintained in the contracted state. When the outer layer bottle is squeezed and deformed by pinching in a state where this space is generated, the air in the space is pressurized, the inner layer bag is squeezed by the pressurized air, and as a result, the contents are discharged.

  The shrinkability of the inner layer bag by the 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 so that the contents can be discharged at a lower pressurized air pressure.

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

  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 have demanded a higher level of stability during long-term storage. It is necessary to improve the stability (in other words, the water vapor barrier property) while allowing the entire amount of the liquid to be discharged.

  Although the present applicant's current product has some wall thickness differences due to molding errors, etc., the inner bag has a uniform wall thickness of about 0.1 mm in terms of design. Therefore, it is necessary to further improve the barrier property while maintaining the shrinkability of the inner layer bag at the same level.

  The 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 a body portion that can be elastically squeezed and deformed. Typically, a mouth portion is integrally provided at the upper end of the trunk portion via a shoulder portion. Preferably, a bottom portion is integrally provided at the lower end of the body portion, and the entire outer layer bottle is configured as a bottomed cylindrical bottle. Preferably, the mouth portion is formed in a relatively thick cylindrical shape so as to have rigidity. Preferably, the trunk portion has front and rear side wall portions and left and right side wall portions, and is configured in a cross-sectional flat cylindrical shape having a front and rear width smaller than the left and right width. More preferably, the front and rear side wall portions are configured to be relatively thick, and the left and right side wall portions are configured to be 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. The outside air introduction hole may be provided in the trunk portion, may be provided in the mouth portion, or may be provided in the bottom portion. The shape or structure of the outside air introduction hole may be appropriate, for example, a round hole or a slit. Preferably, the outside air introduction hole can be provided in a central portion of at least one of the front and rear side wall portions. The outside air introduction hole may be closed with a user's finger when squeezing, and a check valve is provided in the outside air introduction hole that allows the introduction of outside air into the outer layer bottle but prevents the outflow of gas from the outer layer bottle. May be.

  The inner layer bag is provided in the trunk portion of the outer layer bottle. The inner layer bag and the outer layer bottle may be formed simultaneously by blow molding of the laminated parison, or the inner layer bag and the outer layer bottle may be formed separately and then 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 an appropriate means. Moreover, the lower end part of the inner layer bag may be fixed to the bottom part of the outer layer bottle by an appropriate means.

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

  The nozzle member is attached to the mouth portion of the outer layer bottle and has a discharge path for discharging the contents in the inner layer bag to the outside. Preferably, a filter that blocks the passage of gas in a wet state is provided in the discharge path of the nozzle member, and discharge of the contents in the inner layer bag is allowed, but the outflow of gas in the inner layer bag is prevented, thereby It is desirable to prevent the gas in the inner layer bag from decreasing in the process of shrinking 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 while the outer air introduction hole is blocked, the inner layer bag is compressed by the pressurized air. Then, the contents are discharged from the discharge path of the nozzle member. In addition, when the content has not decreased so much from the time of 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.

  Moreover, even when the remaining amount of the content becomes small, when the front and rear side wall portions of the body portion of the outer layer bottle are pressed inward in the front and rear direction, the front and rear side portions of the inner layer bag are pushed into the front and rear inner sides by the front and rear side wall portions. Thus, the body portion of the outer layer bottle can be configured to be squeezable 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 in the left and right side portions of the discharge container is pressurized by the squeeze deformation of the outer layer bottle, and the compressed air also compresses the left and right side portions of the inner layer bag. Acts to pressurize the inner layer bag.

  The front and rear side portions of the inner layer bag are relatively thick and the left and right side portions are relatively thin. Note that “the front and rear side portions are relatively thick” means that the front and rear side portions are relatively thick in comparison with the left and right side portions, and all of the front and rear side portions of the inner layer bag are relatively thick. Although it is not necessary to be a thick portion, it is preferable that the relatively thick portion is provided over a region exceeding 50% of the vertical width of the inner bag. Further, “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 need to be a part, it is preferable that the outer layer bottle is molded so as to be relatively thin except for a part facing or contacting the mouth part, the shoulder part or the bottom part of the outer layer bottle and a connecting part to them. In addition, the front and rear side portions are relatively thick as compared to the left and right side portions as long as they are relatively thick on average, and there may be some portions of equivalent thickness.

  The preferable wall thickness also varies depending on the type of volatile components contained in the contents, the material, shape and size of the inner layer bag, and the required shrinkage and stability. For example, when the inner layer bag is made of PP, the contents contain moisture as a volatile component, and stability during long-term storage for 12 months is required, the average wall thickness of the left and right sides is 0. The average thickness of the front and rear side portions can be 0.10 to 0.20 mm. More preferably, the average thickness of the left and right side portions can be 0.08 to 0.10 mm, and the average thickness of the front and rear side portions can be 0.15 to 0.17 mm.

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

  To explain the solution principle in the present invention with a simple example, the volatile component permeates from the entire area of the inner surface of the inner layer bag, and the permeability of the volatile component is inversely proportional to the thickness of the inner layer. The inner surface area is S, and the transmittance per unit area and unit time when the wall thickness is 0.1 mm is P. In this case, the transpiration rate per unit time from the entire inner surface of the inner layer bag is S · P. The area occupied by the thick portion of the front and rear side portions of the inner layer bag is 0.7S, the thickness of the thick portion is (1 / 1.5) · P, the area occupied by the thin portion of the left and right side portions is 0.3S, thin wall If the thickness of the part is 1.5P, the transpiration rate 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 making the left and right side portions relatively thin, the left and right side portions function as flexible bent portions, and the front and rear side portions are It is possible to prevent an increase in resistance to compression, and to improve shrinkage while making the front and rear side portions thick. Therefore, it is possible to improve the stability during long-term storage while maintaining the same shrinkability as compared with the conventional inner wall having a uniform thickness.

  Preferably, the front and rear side portions of the inner-layer bag can be provided with flat thick portions over an area of 50% or more thereof, so that the thick portions of the front and rear side portions are substantially flat and inward in the front-rear direction. Can be compressed.

  Preferably, the outside air introduction hole is provided in the front and rear side wall portions of the outer layer bottle at a position corresponding to the substantially center in the left and right direction and the vertical direction of at least one of the front and rear side portions of the inner layer bag. In the case where relatively thick portions are provided in the front and rear side wall portions of the body portion of the outer layer bottle, an outside air introduction hole can be provided at the approximate center in the left-right direction and the up-down direction of the relatively thick portion.

  According to the present invention, the storage conditions are set to 40 ° C. ± 2 ° C./25 by appropriately setting the thicknesses of the inner-layer bag with the front and rear sides relatively thick and the left and right sides relatively thin. % RH ± 5% RH The content of transpiration when the accelerated test for 3 months is 5% by weight or less, and the content of 5% by weight at the time of shipment is in the inner layer bag. The discharge container can be configured such that when the front and rear side wall portions of the body portion 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 the discharge container which compresses the inner layer bag by squeeze deformation of the outer layer bottle and discharges the content, while improving the stability of the content during long-term storage, the content even for elderly people with weak pinching power Can be configured to be capable of discharging the entire amount.

  Moreover, the thickness of the front and rear side portions and the left and right side portions of the inner-layer bag is obtained when an accelerated test is performed for a test period of 3 months with storage conditions of 40 ° C. ± 2 ° C./25% RH ± 5% RH. The transpiration amount of the contents of the inner layer bag is set to be 5% by weight or less, and when the contents of 5% by weight at the time of shipment remain in the inner layer bag, it is between the outer layer bottle and the inner layer bag. When the space is pressurized to 200 kPa, the inner bag may be set to contract until the contents are discharged.

  The “evaporation amount of the contents” is more precisely the evaporation amount of the volatile components contained in the contents, and “the evaporation amount of the contents is 5% by weight or less” is the start of the test. It means that the transpiration of the volatile component is 5% by weight or less with respect to the total weight of the contents at the time.

The state at the time of the shipment of the outer layer bottle and inner layer bag of the discharge container which concerns on one Embodiment of this invention is shown, Fig.1 (a) is a front view, FIG.1 (b) is AA of Fig.1 (a). It is line sectional drawing (longitudinal sectional view). FIG. 2 is an enlarged cross-sectional view taken along the line BB in FIG. It is a trunk | drum cross-sectional view of the state which the inner-layer bag shrunk. It is a longitudinal cross-sectional view which shows a state when the residual amount of the content will be 5 weight%. It is a longitudinal cross-sectional view which shows the state which carried out the squeeze deformation of the outer layer bottle from the state shown in FIG.

  The basic configuration of the present invention is disclosed in Patent Documents 1 to 8, and may be the same configuration except for the thickness setting of the inner bag and the filling rate of the contents at the time of shipment. Accordingly, the illustration of the nozzle member is omitted. In the following description, refer to Patent Document 1 for the configuration of the nozzle member.

  1 and 2 show a state of the outer layer bottle 21 and the inner layer bag 22 of the discharge container according to an embodiment of the present invention at the time of shipment. The discharge container according to the present embodiment includes a laminated bottle having an inner and outer two-layer structure formed by blow-molding a bottomed cylindrical laminated parison, and a nozzle member (a stopper) attached to the mouth of the laminated bottle. The nozzle member is provided with a discharge path for discharging the contents. Further, in the discharge path of the nozzle member, a filter and a plug that seals the discharge path until the first discharge on the upstream side of discharge of the filter are provided. By inverting the laminated bottle and squeezing the body part by pressing, the contents inside the laminated bottle are dropped from the tip nozzle part through the discharge path in the nozzle member.

  In FIG. 1, the laminated bottle is illustrated in a vertically inverted state, but the laminated bottle includes a laminated structure of an outer layer bottle 21 (squeeze bottle) that constitutes the outer layer and an inner layer bag 22 (content storage bag) that constitutes the inner layer. Has been. The outer layer bottle 21 and the inner layer bag 22 both have a cylindrical mouth portion and a body portion having an elliptical cross section immediately after blow molding. The outer layer bottle 21 can be formed of, for example, a synthetic resin material such as PET or SBS, and the inner layer bag 22 is a synthetic resin having a property of easily peeling from the outer layer bottle 21 (for example, polyolefin such as polypropylene or polyethylene). It is even better if it is a material that can be molded by) and resistant to electron beam sterilization or γ-ray sterilization. The mouth portion of the inner layer bag 22 constitutes an opening for discharging contents, and the opening portion of the inner layer bag 22 is fixedly connected to the mouth portion of the outer layer bottle 21.

  The outer-layer bottle 21 is provided with a cylindrical mouth portion 21C at the upper end of a barrel portion 21A having a flat cylindrical section that can be elastically squeezed and deformed through a shoulder portion 21B that gradually decreases in diameter as it moves upward. It is a thing. Further, a bottom portion 21D is provided at the lower end of the trunk portion 21A, and the entire outer layer bottle 21 is configured in a bottomed cylindrical shape. The outer bottle 21 may have any detailed structure. However, as disclosed in Patent Document 2, the front and rear side wall portions 21Aa of the trunk portion 21A are thick wall portions having high rigidity, and the trunk portion 21A. The left and right side wall portions 21Ab can be configured to be thin wall portions that are rich in flexibility.

  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 vertical and horizontal central portions of the front and rear side wall portions 21Aa of the body portion 21A, but can also be provided in the bottle bottom portion and the mouth portion.

  The inner layer bag 22 has a film shape and is easily contracted and deformed as the contents are reduced. On the other hand, after the contents are discharged, the inner bag 22 is in the tip nozzle portion of the discharge path on the discharge downstream side of the filter. It may have a restoring elasticity that can suck back the remaining contents to the upstream side of the filter.

  As shown in FIG.1 (b), it is preferable to fill the inner layer bag 22 with the content of about 50% to 70% by volume with respect to the full volume of the inner layer bag 22 at the time of shipment. The larger the filling rate of the content with respect to the full volume of the inner layer bag 22, the more advantageous in terms of the transpiration rate of the volatile components contained in the content, but the volume of the space in the inner layer bag 22 (that is, the gas in the inner layer bag 22). The volume) is reduced and the discharge of the whole amount is deteriorated. Therefore, in optimizing the wall thickness condition of the inner layer bag 22 described later, it is preferable to consider the relationship between the filling rate of the contents with respect to the full volume of the inner layer bag 22.

  In the example shown in FIG. 1B, the inner layer bag 22 at the time of shipment is in close contact with the inner surface of the outer layer bottle 21, but the inner layer bag 22 can be contracted to some extent at the time of shipment. The inner volume of the inner bag 22 in the contracted state is the “full volume” in the present invention. The “full volume of the inner layer bag” is the maximum volume that can be filled with the contents in the mounted state of the nozzle member, and the inner volume of the inner layer bag may be reduced by mounting the nozzle member. The remaining volume of the inner bag 22 is filled with gas. As such a gas, sterilized air or nitrogen can be used.

  In the present embodiment, as shown in FIG. 2, the average thickness of the front and rear side portions of the inner layer bag 22 in the portion accommodated in the body portion 21A of the outer layer bottle 21 is compared with the average thickness of the left and right side portions. 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. The thickness control of the inner layer bag 22 can be achieved by, for example, forming the front and rear side portions relatively thick at the time of injection molding of the laminated parison for blow molding, or molding conditions at the time of blow molding. This can be done by optimization of the above.

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

  The thick portions of the front and rear side portions of the inner layer bag 22 facing the front and rear side wall portions 21Aa of the outer layer bottle 21 are flat as shown in FIG. 2 at the time of shipment, and the inner layer bag 22 gradually contracts due to the decrease in contents. As shown in FIG. 3, the substantially flat state is maintained.

  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 contracts. FIG. 4 shows a state in which the contents of 5% by weight at the time of shipment remain in the inner layer bag 22, but since the inner layer bag 22 is filled with gas, the inner layer bag is also in this state. 22 can be further compressed. Therefore, when the outer layer bottle 21 is squeezed and 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 this pressurized air, As a result, the internal pressure of the inner layer bag 22 is increased, and the entire amount of contents can be discharged by the internal pressure. In this embodiment, since the mouth portion of the inner layer bag is not deformed, if all the small contents flow into the mouth portion at the time of discharge, the filling rate of the content 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 is configured to be compressible until the entire content is discharged by limiting the volume to about 80% by volume and filling the remaining volume with gas.

  The inner layer bag is made of PP, and the storage condition is 40 ° C. ± 2 ° C./25% RH when filling the eye drop with water as a solvent as the contents, with a full volume of 10 mL at the time of shipment, 5 mL of the content at the time of shipment. The amount of transpiration of the contents when the accelerated test is conducted for 3 months with a test period of ± 5% RH is suppressed to 5% by weight or less, and even the elderly with relatively weak power can discharge the entire amount by squeezing the bottle relatively easily. In view of the fact that the wall thickness of the inner bag in the product that the applicant of the present application has manufactured in the past is about 0.10 mm, the average of the front and rear sides of the inner bag of the present embodiment It is considered preferable that the wall thickness is 0.10 to 0.20 mm, and the average wall thickness on the left and right sides is 0.06 to 0.10 mm. In order to ensure the strength of the left and right side portions, the minimum thickness of the left and right side portions can be set to 0.06 mm. The minimum thickness of the front and rear sides can be 0.10 mm.

  It is considered that the preferable thickness condition varies depending on the ratio of the short diameter dimension (that is, the longitudinal width) to the long diameter dimension (that is, the lateral width) of the bottle body shape shown in FIG. . When the dent amount D of the front and rear sides from the short diameter side apex of the elliptical contour shape is made constant by forming the front and rear side portions flat, the short diameter side top portion X of the elliptic virtual contour shape increases as the flatness ratio increases. It is considered that the design conditions become more severe because the right and left widths of the flat front and rear side portions are reduced. According to the analysis using the computer simulation of the present inventor, when the flatness ratio is 70%, the front and rear side portions of the inner layer bag have a predetermined uniform thickness within the range of 0.15 to 0.19 mm, the left and right sides When the part had a predetermined uniform wall thickness in the range of 0.06 to 0.10 mm, good results were obtained in both the amount of transpiration of the contents during long-term storage and the shrinkability of the inner layer. On the other hand, when the flatness ratio is 75%, the front and rear side portions 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 side portions are within the range of 0.08 to 0.10 mm. In the case of a predetermined uniform wall thickness, good results were obtained in both the amount of transpiration of the contents during long-term storage and the shrinkage of the inner layer.

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

  The above-mentioned filters include membrane filters, sintered filters, hydrophilic porous flat membranes and hydrophobic porous flat membranes, such as pathogenic microorganisms from the discharge downstream side of the filter (outside the container) to the discharge upstream side (inside the container) And those that can prevent permeation of viruses can be used as appropriate.

  The plug body can be liquid-tightly fitted to a fitting portion provided in the middle of the discharge path. By pushing the plug into the fitting part from above, it is possible to generate a fitting force that does not cause the plug to come off from the fitting part when the bottle internal pressure increases or vibrates during bottle storage or transportation. it can.

  When performing the first discharge, the bottle body is squeezed to close the introduction hole with a finger in a state where the container is kept upright with the cap covering the nozzle member, and the internal pressure of the inner bag 22 is increased. Thus, the plug body can be detached from the fitting portion by the internal pressure. At the first discharge, the air between the filter and the plug is pushed out of the filter that is still dry, and after that, it is filled with the contents up to the bottom of the filter. Always wet.

  In the second and subsequent discharges, since the inner bag 22 is always in communication from the filter to the filter, the squeeze force of the bottle body for discharge is reduced, and a smooth discharge operation can be performed. Further, since the outside air cannot pass through the wet filter, the outside air is not introduced upstream of the filter after the second time, and the discharge failure due to the occurrence of the air lock state does not occur. Furthermore, due to the restoring property of the inner layer bag 22, the liquid agent remaining in the downstream side of the filter, that is, the liquid agent remaining in the discharge nozzle part can be sucked back to the upstream side of the filter, thereby preventing the growth of bacteria in the nozzle part. .

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

  The present invention is not limited to the above-described embodiment, and the design can be changed 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 food-use tube bottle, or the like. Moreover, the content can contain volatile components, such as water, alcohol, and vinegar, and the volatile component may be contained as a solvent or a dispersing agent, and may be contained as an active ingredient. Moreover, the content should just be in the state which has fluidity | liquidity, such as not only a liquid but gel form and paste form. Furthermore, the content may be a liquid preparation, a food such as mayonnaise or soy sauce, or a cosmetic such as a moisturizing cream or hair styling.

Claims (5)

An outer bottle having a mouth and an elastically squeezable body;
An inner layer bag provided in the body 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 while the outer air introduction hole is blocked, the inner layer bag is compressed by the pressurized air. In the discharge container in which the contents are discharged from the discharge path of the nozzle member,
The inner-layer bag is a discharge container in which the front and rear sides are relatively thick and the left and right sides are relatively thin. In the discharge 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 cross-sectional shape having a smaller front and rear width than the left and right width, and presses the front and rear side wall portion inward in the front and rear direction. Thus, the discharge container can be squeezed and deformed until the front and rear side portions of the inner-layer bag that are pushed inward by the front and rear side wall portions contact each other. The discharge container according to claim 1 or 2,
The said external air introduction hole is a discharge container provided in the position corresponding to the approximate center of the left-right direction and the up-down direction of at least any one of the front-back side part of the said 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 content 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 of the inner layer bag and the thickness of the left and right sides are
The storage conditions are set to 40% ± 2 ° C / 25% RH ± 5% RH, and the transpiration amount of the contents when the accelerated test is performed for 3 months is 5% by weight or less.
When the contents of 5% by weight at the time of shipment remain in the inner layer bag, pressing the front and rear side wall portions of the body portion of the outer layer bottle with a force of 1.0 kgf 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 content 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 of the inner layer bag and the thickness of the left and right sides are
The storage conditions are set to 40% ± 2 ° C / 25% RH ± 5% RH, and the transpiration amount of the contents when the accelerated test is performed for 3 months is 5% by weight or less.
When the content of 5% by weight at the time of shipment remains in the inner layer bag and the space between the outer layer bottle and the inner layer bag is pressurized to 200 kPa, the inner layer bag is discharged until the content is discharged. Is set to contract,
Discharge container.

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