Discharge container

Abstract

To provide a double type discharge container 10 in which after use, an inner container 12 can be easily removed from a container body 11 and separated.SOLUTION: A discharge container comprises: a container body 11; a valve 13 which is screwed to a neck part 11d of the container body 11; and inner containers 12, 12A, 24 in which a stock solution is filled. The inner containers 12, 12A, 24 are accommodated in the container body 11, a pressurization agent P is filled between the container body 11 and the inner containers 12, 12A, 24, and the inner containers 12, 12A, 24 are connected so as to co-rotate with the valve 13. A fitting cylinder part 26a and valve connection parts 22, 24b, that connect the valve 13 and the inner containers 12, 12A, 24, are non-cylindrical.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a dispensing container that dispenses concentrate from an inner container using the pressure of a pressurizing agent filled between the container body and the inner container, and in particular to a dispensing container that allows the empty inner container to be removed from the container body after use. [Background technology]

[0002] In this type of dispensing container, it is desirable to make it easy to remove the inner container from the container body for separate disposal or recycling. Patent Document 1 discloses a beverage container comprising a container body, a housing threadedly attached to the container body, a valve attached to the housing for removing the contents from the container body, a pouch housed inside the container body and attached to the housing separately from the valve, an aerosol can for injecting gas into the pouch, and contents filled between the container body and the pouch. In this beverage container, gas is injected from the aerosol can into the pouch to expand the pouch, and the contents are dispensed by operating the valve.

[0003] Patent Document 2 discloses an aerosol container that includes a synthetic resin container body, a lid that is screwed onto the opening of the container body, an aerosol valve attached to the lid, and a hanging bag that is connected to the bottom end of the aerosol valve. Because the aerosol valve is screwed onto the container body via the lid, it can be removed after use.

[0004] Patent Document 3 discloses a discharge container in which a pouch (product bag) is fixed to a valve assembly. Patent Document 4 describes a method of rolling the pouch into a cylindrical shape and securing it with tape to make it easier to insert into an outer container. Patent Document 5 discloses an inner container consisting of a pouch and a flow path member. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Registration No. 2557006 [Patent Document 2] Japanese Patent Application Publication No. 9-193981 [Patent Document 3] Japanese Patent Application Publication No. 6-286778 [Patent Document 4] Japanese Patent Application Laid-Open No. 2012-250755 [Patent Document 5] Japanese Patent Application Laid-Open No. 2017-128352 Summary of the Invention [Problem to be solved by the invention]

[0006] In the discharge container of Patent Document 1, the pouch expands to its maximum state when the contents are gone, making it difficult to remove the pouch even when the housing is turned in the direction of removal. In the discharge container of Patent Document 2, depending on the concentrate filled in the hanging bag, the connection part of the hanging bag may detach from the aerosol valve due to swelling or the like. Also, depending on the contracted shape of the hanging bag, it may be difficult to pull it out of the container body. In the discharge containers of Patent Documents 3 to 5, the valve assembly is fixed to the container body by plastically deforming a metal mounting cup, so the valve assembly cannot be removed from the container body and the inner container and container body cannot be separated.

[0007] An object of the present invention is to provide a double-type dispensing container in which the inner container can be easily removed from the container body after use. [Means for solving the problem]

[0008] The discharge container 10, 10A of the present invention is a discharge container 10 comprising a container body 11, a valve 13 screwed onto the opening (neck portion 11d) of the container body 11, and an internal container 12, 12A, 24 filled with concentrate C, characterized in that the internal container 12, 12A, 24 is housed within the container body 11, a pressurizing agent P is filled between the container body 11 and the internal container 12, 12A, 24, and the internal container 12 is connected so as to rotate together with the valve 13.

[0009] In such discharge containers 10, 10A, the inner containers 12, 12A, 24 are provided with valve connecting portions 22, 24b that are connected to the valve 13, and it is preferable that the connecting portion between the valve connecting portions 22, 24b and the mounting tubular portion 26a of the valve 13 that is connected to the valve connecting portions 22, 24b is non-cylindrical.

[0010] In such discharge containers 10, 10A, the inner containers 12, 12A are provided with valve connecting portions 22, 24b that are connected to the valve 13, and it is preferable that the valve connecting portions 22, 24b have two parallel flat surfaces.

[0011] In such discharge containers 10, 10A, the inner containers 12, 12A are provided with valve connecting parts 22, 24b that are connected to the valve 13, and it is preferable that the outer member of the valve connecting parts 22, 24b and the valve mounting tube part 26a that is fitted into the valve connecting parts is made of a laser-transparent resin and the inner member is made of a laser-impermeable resin.

[0012] Preferably, container body 11 comprises a cylindrical body portion 11b, a shoulder portion 11c whose diameter tapers upward from the upper end of body portion 11b, and a cylindrical neck portion 11d provided at the upper end of shoulder portion 11c, and inner containers 12, 12A have pouches 16, 16A, and side portion 16f of pouch 16A is arranged so as to curve in the rotation direction to remove valve 13 and come into surface contact with the inner surface of container body 11. In this case, it is preferable that width B of the pouch is larger than inner diameter D1 of body portion 11b of container body 11, and side portion 16f of pouch 16A is curved and comes into surface contact with the inner surface of body portion 11b of container body 11. Furthermore, the inner containers 12, 12A may have a connecting member 17 connected to the valve 13 and pouches 16, 16A welded to the connecting member 17, the height H of the pouches 16, 16A being higher than the upper end of the shoulder portion 11c of the container body 11, and the neck portions 16d of the pouches 16, 16A being inserted into the neck portion 11d of the container body 11.

[0013] It is preferable that the inner containers 12, 12A have a connecting member 17 and pouches 16, 16A fixed to the connecting member 17, the upper part of the connecting member 17 is a valve connecting portion 22 that is connected to the valve 13, and a flow path member 23 is provided at the lower part of the connecting member 17. [Effects of the Invention]

[0014] In the discharge container of the present invention, the inner container is connected so that it rotates together with the valve, so that after use, when the consumer turns the valve in the direction of removal, the pressurizing agent is discharged to the outside, and the inner container can be removed together with the valve and separated from the container body. Since the concentrate was contained within the inner container, cleaning of the container body is unnecessary or easy, making it easy to recycle.

[0015] In such a discharge device, if the internal container has a valve connecting portion that is connected to the valve, and the connecting portion between the valve connecting portion and the mounting tubular portion of the valve connected to the valve connecting portion is non-cylindrical, it can be reliably rotated together even if the fit of the connecting portion becomes weak due to penetration of the concentrate, etc.

[0016] In such a discharge device, if the inner container has a valve connecting part that is connected to the valve, and the valve connecting part has two parallel flat surfaces, these flat surfaces can be welded to the mounting tube of the valve inserted inside, allowing the valve and the inner container to rotate together reliably, making it even easier to remove the inner container.

[0017] In such a discharge device, if the internal container has a valve connecting part that is connected to the valve, and the valve connecting part and the valve mounting tubular part that fits into the valve connecting part have an outer member made of a laser-transparent resin and an inner member made of a laser-impermeable resin, the valve connecting part and the valve mounting tubular part can be laser welded together, allowing the valve and internal container to rotate reliably together, making it even easier to remove the internal container.

[0018] If the container body has a cylindrical body, a shoulder that narrows in diameter from the upper end of the body, and a cylindrical neck provided at the upper end of the shoulder, and the inner container is a pouch, and the side of the pouch is curved in the rotation direction to remove the valve and is positioned so as to come into surface contact with the inner surface of the container body, the pouch will easily narrow in diameter when the valve is turned, making it easy to remove.

[0019] When the width of the pouch is larger than the inner diameter of the body of the container body and the sides of the pouch are curved and in surface contact with the inner surface of the body of the container body, the pouch is stably held by the container body. When the inner container has a connecting member connected to the valve and a pouch welded to the connecting member, and the height of the pouch is higher than the upper end of the shoulder of the container body and the neck of the pouch is inserted into the neck of the container body, by turning the valve when removing the inner container, the pouch can be smoothly shrunk along the neck and shoulder of the container body without damaging the welded portion between the pouch and the connecting member.

[0020] If the inner container has a connecting member and a pouch fixed to the connecting member, the upper part of the connecting member being a valve connecting part that connects to the valve, and a flow path member being provided at the lower part of the connecting member, when the valve is rotated to remove the inner container, the flow path member rolls up and shrinks the pouch, making it easy to remove from the neck part of the container body. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1A is a cross-sectional view showing one embodiment of a discharge container of the present invention, and FIG. 1B is a cross-sectional view taken along line II in FIG. 1A. [Figure 2] 2A, 2B, and 2C are a front view, a plan view, and a side view, respectively, of the inner container of FIG. 1A. [Figure 3] 3A is a cross-sectional view of the discharge container of FIG. 1A when the inner container is inserted, and FIG. 3B is a cross-sectional view taken along line III-III in FIG. 3A. [Figure 4] 4A is a perspective view of the inner container of FIG. 1A housed in the container body, and FIG. 4B is a perspective view of the inner container before housed. [Figure 5]FIG. 5A is a front view showing another embodiment of the inner container housed in the container body, and FIG. 5B is a cross-sectional view taken along line VV of FIG. 5A. [Figure 6] 6A and 6B are plan views showing other embodiments of the connecting portion. [Figure 7] FIG. 10 is a cross-sectional view showing another embodiment of the discharge container before assembly. [Figure 8] FIG. 8 is a cross-sectional view of the discharge container of FIG. 7 after assembly. DETAILED DESCRIPTION OF THE INVENTION

[0022] The discharge container 10 in FIG. 1A comprises a container body 11, an inner container 12 housed within the container body 11, and a valve (aerosol valve) 13 connected to the opening of the inner container 12 and screwed onto the container body 11.

[0023] The container body 11 comprises a bottom 11a, a cylindrical barrel 11b, a tapered shoulder 11c formed at the top of the barrel 11b and tapering toward the top, and a cylindrical neck 11d formed at the top. The top of the neck 11d is open, and a male thread 11e is formed on the outer periphery of the neck 11d. An O-ring 11f is fitted into an O-ring groove formed on the outer periphery of the lower part of the neck 11d. This O-ring 11f provides a seal between the valve 13 and the container body 11.

[0024] Such a container body 11 can be integrally molded from synthetic resin. For example, it can be formed by injection blow molding, in which a preform is injection molded from a thermoplastic resin, and then the bottom portion 11a, body portion 11b, and shoulder portion 11c are blow molded. It may also be molded from other materials such as metal or pressure-resistant glass. In either case, it is preferable that the material has a pressure resistance of 0.5 to 1.0 MPa. The inner diameter D1 of the body portion 11b of the container body 11 is 1.2 to 5 times, and particularly 1.3 to 4 times, the inner diameter D2 of the neck portion 11d. The inclination angle θ of the inner surface of the shoulder portion 11c is approximately 30 to 70° with respect to the horizontal. Specifically, the inner diameters of the mouth and neck portion 11d of the container body 11 are preferably 8 to 35 mm, and particularly 10 to 30 mm. The inner diameter of the body portion 11b of the container body is preferably 20 to 80 mm, and particularly 25 to 70 mm.

[0025] The inner container 12 is composed of a bag-like pouch 16 formed by bonding two flexible sheets 12a together, and a cylindrical connecting member 17 attached to the opening 16a of the pouch 16. In this embodiment, a flow path member 23 is provided integrally and continuously with the lower part of the connecting member 17.

[0026] 2A to 2C, pouch 16 comprises a margin 18 formed by bonding the peripheral edges of two sheets 12a together, and a substantially rectangular storage section 19 surrounded by margin 18, with opening 16a formed by the gap between the two sheets 12a at the center of the top. In this embodiment, left and right corners of upper end 16b of pouch 16 are cut out along vertical and diagonal lines, thereby forming neck 16d and shoulder 16c. Left and right corners of lower end 16 are cut out along diagonal lines, forming cutouts 16e.

[0027] Returning to FIG. 1A, in this embodiment, the width B of the pouch 16 is smaller than the inner diameter D1 of the body 11b of the container body 11, for example, approximately 0.8 to 0.98 times the inner diameter D1 of the body 11b. It is also larger than the inner diameter D2 of the neck 11d of the container body 11, for example, approximately 2 to 3 times the inner diameter D2 of the neck 11d. The height H (see FIG. 2A) of the pouch 16 is approximately 3 to 15 mm higher than the height from the inner surface of the bottom 11a of the container body 11 to the lower end of the neck 11d. The neck 16d, formed by cutting the upper end of the pouch 16 along the vertical lines on the left and right, is smaller than the inner diameter of the neck 11d of the container body 11, and extends from the lower end of the neck 11d into the neck. As a result, when the pouch 16 is inserted into the container body 11 and the valve 13 is attached to the container body 11, both corners (shoulders 16c) below the neck of the pouch 16 are folded by or come into contact with the inner surface of the shoulders 11c of the container body 11.

[0028] The sheet 12a used in the pouch 16 may be a single-layer or laminated sheet made of synthetic resin, or a laminated sheet made of a metal foil layer and a synthetic resin layer. The metal foil may be a light metal such as aluminum foil. Aluminum foil with a thickness of about 5 to 20 μm is preferred in terms of strength and shape retention.

[0029] Examples of synthetic resins include polyethylene, polypropylene, and polyethylene terephthalate, which have excellent chemical resistance, and nylon and EVAL, which have excellent gas barrier properties. These resins may be selected and combined depending on the contents. Instead of a metal foil layer, a vapor-deposited layer may be used, in which carbon, silica, alumina, or the like is vapor-deposited onto a synthetic resin layer to form a coating. The sheets 12a are attached to each other by welding using a thermoplastic resin layer laminated on the metal foil, or by using an adhesive. In particular, when a laminated sheet having a metal foil (layer) is used, the effect of preventing moisture penetration and light blocking is high, allowing a variety of contents to be stably stored.

[0030] As shown in FIGS. 2A to 2C, the connecting member 17 comprises a cylindrical adhesive portion 21 fixed to the opening 16a of the pouch 16, a cylindrical valve connecting portion 22 provided coaxially above the adhesive portion 21 and connected to a cylindrical mounting portion 26a at the lower end of the valve 13 (described later), and a flow path member 23 continuing below the adhesive portion 21. The central holes of the adhesive portion 21, flow path member 23, and valve connecting portion 22 are connected. The connecting member 17 and flow path member 23 are integrally molded. Note that the flow path member 23 may be a separate component, and is not necessarily required. Depending on the bending strength and tensile strength of the sheet 12a, the remaining amount of concentrate can be reduced even without the flow path member 23, and the pouch 16 can also be rolled up.

[0031] The adhesive part 21 has an outer peripheral surface in the shape of a substantially diamond-shaped column (see FIG. 2B). The sheet 12a of the pouch 16 is attached to the outer peripheral surface of this adhesive part 21. In addition, a flange part 21b is formed at the upper end of the adhesive part 21. This flange part 21b specifies the attachment position of the pouch 16, thereby enabling the pouch 16 to be securely attached to the adhesive part 21. The inside of the adhesive part 21 is an internal passage 21a consisting of a cylindrical cavity, which serves as an outflow path for the concentrate in the storage part 19 of the pouch 16.

[0032] The valve connecting portion 22 is cylindrical, partially provided with a flat surface 22a parallel to the axis, forming a generally D-shaped cross section. This results in a generally D-shaped exterior outline and an internal outline in a plan view. Therefore, when connected to the mounting tubular portion 26a of the valve 13, the valve 13 and the inner container 12 rotate together without slippage in the rotational direction. Two parallel flat surfaces 22a can be provided to form a generally oval cross section or an athletics track-like cross section (see FIG. 6B). The valve connecting portion 22 can be welded to the valve mounting tubular portion 26a by pressing the two flat surfaces 22a with a hot plate or an ultrasonic horn. In this case, the valve mounting tubular portion 26a may be shaped approximately the same as the valve connecting portion and inscribed therein, or it may have a circular cross section. Alternatively, the connecting member 17 (valve connecting portion 22) can be molded from a laser-transparent synthetic resin such as polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyamide, or polyacetal, and the housing 13a (mounting cylindrical portion 26a) can be molded from the same synthetic resin mixed with a pigment to prevent laser transmission, and the two can be laser-welded together by irradiating them with a laser from the outside while they are connected. In this case, the valve connecting portion 22 and the valve mounting cylindrical portion 26a can both be made circular in cross section, making them easy to connect.

[0033] The internal passage 21a of the adhesive part 21 opens inside the storage part 19 of the pouch 16, and the internal passage 21a and the storage part 19 communicate with each other via the opening 17a. The flow path member 23 prevents the pouch 16 from bending or adhering when the contents (concentrate) in the pouch 16 is discharged and the pouch 16 contracts, thereby ensuring a discharge path for the concentrate C and minimizing the amount of residual concentrate C. For this reason, the flow path member 23 is thin and plate-like and elongated in the vertical direction so as to minimize the interference with the adhesion of the sheets 12a of the pouch 16.

[0034] On the other hand, even when the sheets 12a are in close contact with each other, in order to ensure a flow path for the concentrate around the flow path member 23, wide semicircular sections and narrow sections are alternately arranged in a front view (see FIG. 2A), and the front and back surfaces are provided with uneven sections, with multiple grooves formed on both sides of the convex sections to allow the concentrate to pass up and down. Such connecting member 17 and flow path member 23 can be made of synthetic resins such as polyethylene, polypropylene, polyacetal, polybutylene terephthalate, and polyamide. When the valve 13 is turned and removed, the connecting member 17 rotates together, and the semicircular sections make it easy to roll up the pouch 16.

[0035] As shown in FIGS. 3A and 3B , the pouch 16 is inserted into the container body 11 after being rolled into an S-shaped cross section so that it can be easily inserted into the neck portion 11d of the container body 11 and can easily expand inside the container body 11. It may also be inserted after being folded into a Z-shaped cross section. To maintain the rolled or folded state, tape T may be attached to two locations, top and bottom. Such tape T should have sufficient adhesiveness or tackiness to be easily peeled off when the inner container 12 is filled with concentrate and the pouch 16 expands. The rolling direction is not particularly limited, but if the internal thread 13g of the cap 13f is right-handed, it is preferable to roll the pouch 16 along a right-handed spiral. This ensures that when the cap 13f is turned counterclockwise to remove it, the side edges of the pouch 16 experience sliding resistance from the inner surface of the container body 11, making it easier to wind the pouch 16 around the flow path member 23. Conversely, the pouch 16 may be rolled into a left-handed spiral.

[0036] As shown in Figure 3A, valve 13 consists of cylindrical housing 13a, stem 13b housed within housing 13a so that it can move up and down, spring 13c that constantly urges stem 13b upward, stem rubber 13e that closes the stem hole in stem 13b, and cup-shaped cap 13f that screws the entire cap onto neck 11d of container body 11. Cap 13f has an inner periphery formed with female threads 13g that mate with male threads 11e on neck 11d of container body 11, and the inner surface of the lower part is smooth and cylindrical so that it abuts against the O-ring of container body 11. A housing fixing part 13h that fixes stem rubber 13e and housing 13a is provided on the upper surface of cap 13f.

[0037] A cylindrical mounting tube 26a is formed at the lower end of housing 13a, protruding downward and connecting the interior of housing 13a with pouch storage section 19. The outer peripheral surface of mounting tube 26a has a generally D-shaped cross section that fits with the inner surface of valve connecting section 22 of connecting member 17. By inserting mounting tube 26a into valve connecting section 22, valve 13 and inner container 12 are connected in a state where they cannot rotate, i.e., they rotate together. Note that the fit between valve connecting section 22 and mounting tube 26a is preferably strong enough to prevent them from coming loose in the axial direction.

[0038] Next, the procedure for assembling the discharge container 10 and the process for filling the discharge container 10 with the pressurizing agent and concentrate will be described. First, the mounting tubular portion 26a of the valve 13 is inserted into the valve connecting portion 22 of the inner container 12 to connect them and assemble the connected body 20. The pouch 16 of the inner container 12 is rolled into a cylindrical shape in advance and is held in that shape by tape T (see Figure 4B). This simplifies the insertion process. Next, the inner container 12 is inserted into the container body 11 (see Figure 3).

[0039] The inner container 12 is inserted deeply, and from the position where the cap 13f contacts the neck 11d of the container body 11, the cap 13f is screwed onto the male thread 11e of the neck 11d of the container body 11. At this time, the cap 13f does not cover the O-ring 11g. The lower end of the pouch 16 may be placed on the bottom 11a of the container body 11, or may be suspended by the valve 13. In this state, the interior of the container body 11 is not sealed from the outside air.

[0040] In this way, the valve 13 is disposed with a gap between it and the container body 11, so that the pressurizing agent P can be filled between the container body 11 and the inner container 12 (under-cup filling). The cap 13f of the valve 13 is partially screwed onto the neck portion 11d of the container body 11, so there is no need to keep the valve 13 raised.

[0041] After filling the pressurizing agent P using the pressurizing agent filling mechanism, the cap 13f of the valve 13 is rotated in the screw-tightening direction until the smooth inner surface of the lower part of the cap 13f is fitted over the O-ring 11f, thereby joining the container body 11 and the valve 13. Finally, the concentrate C is filled into the inner container 12 from the stem 13b of the valve 13. As the concentrate C is filled, the rolled-up pouch 16 unfolds and expands, and the storage section 19 expands with the concentrate C, increasing its volume.

[0042] Even when the pouch 16 expands, the side edges of the pouch 16 do not reach the inner surface of the trunk portion 11b of the container body 11. Therefore, the pouch 16 is little deformed, and in particular, is not bent, so the pouch 16 can expand smoothly and can be reliably filled with a predetermined amount of concentrate C.

[0043] The above filling method is preferable when compressed gas is used as the pressurizing agent P. By filling the pressurizing agent (compressed gas) at 0.2 MPa to 0.4 MPa and then filling the concentrate C, the volume of the storage section 19 increases and the space between the container body 11 and the inner container 12 decreases, making it possible to increase the pressure at the time of product to 0.5 to 1.0 MPa. However, the concentrate C may be filled before filling the pressurizing agent P.

[0044] The discharge container 10 manufactured as described above is used by attaching a known operating member such as a push button (not shown) to the stem 13b. When the push button is pressed in this state, the valve 13 opens, and the concentrate C in the pouch 16 is discharged to the outside through the connecting member 17, housing 13a, stem 13b, and the nozzle of the push button due to the pressure of the pressurizing agent P. When the push button is released, the valve 13 closes and discharge stops.

[0045] As concentrate C is discharged from pouch 16, pouch 16 becomes flattened, but thanks to flow path member 23, the pouch 16 can be discharged almost entirely without causing trouble such as the pouch 16 adhering and bending before the entire amount is discharged, preventing further discharge. After discharge, the pouch 16 becomes flat with most of the two sheets 12a overlapping and adhering.

[0046] When the discharge container 10 after use is rotated in a direction to remove the cap 13f of the valve 13 in order to remove the inner container 12 from the container body 11, the mounting tubular portion 26a of the valve 13 and the valve connecting portion 22 of the connecting member 17 rotate together. Therefore, as the cap 13f rotates, the pouch 16 also rotates and is pulled up. Even after the cap 13f is removed, the valve 13 continues to rotate, pulling up the pouch 16 while it is wound up by the flow path member 23.

[0047] Because the neck portion 16d of the pouch 16 is inserted into and does not contact the neck portion 11d of the container body 11, the neck portion 16d does not receive resistance from the container body 11 even when the pouch 16 rotates in conjunction with the rotation of the connecting member 17. This makes it difficult for the welded portion between the neck portion 16d and the adhesive portion 21 to be damaged, and the pouch 16 rotates easily. Furthermore, when the pouch 16 rotates and rises, the shoulder portion 16c below the neck portion 16d contracts like a scroll, being wound up along the shoulder portion 11c of the container body 11 and the inner surface of the neck portion 11d, making it easy to pull out the inner container 12 from the container body 11.

[0048] In the above embodiment, the neck 16d of the pouch 16 of the inner container 12 remains within the neck 11d of the container body 11 even after the concentrate C is filled, and does not expand like the neck 16d does within the body 11b. Therefore, even when the pouch 16 begins to be pulled up, the shoulder 16c of the pouch 16 curves along the tapered inner surface of the shoulder 11c of the container body 11. Therefore, the pouch 16 is guided by the inner surface of the shoulder 11c, and can be pulled up smoothly.

[0049] After the inner container 12 is removed from the container body 11, the container body 11 is free from the concentrate C, so cleaning is unnecessary or only requires simple cleaning, facilitating recycling. In particular, in this embodiment, once the O-ring 11f is removed, the container body 11 is made of a single material, which allows for resource recycling as a synthetic resin material, contributing to environmental conservation.

[0050] 5A and 5B show another embodiment of inner container 12A inserted into container body 11. Container body 11 is substantially identical to container body 11 in Fig. 1A. Inner container 12A has a larger width B of pouch 16A, but is otherwise substantially identical to inner container 12 in Fig. 1A, including connecting member 23.

[0051] In this embodiment, pouch 16A is configured so that its width B in the expanded state, indicated by the imaginary lines, is greater than inner diameter D1 of body portion 11b of the container body. In particular, it is preferable that width B be 1.1 to 2 times, and preferably 1.2 to 1.8 times, inner diameter D1 of body portion 11b of the container body. As a result, when pouch 16A is inserted into container body 11, pouch 16A, which was previously rolled up like a scroll, expands into an S-shape or a generally arcuate shape in plan view, and side portion 16f of pouch 16A reliably comes into surface contact with the inner surface of body portion 11b of container body 11. The resulting elastic restoring force stably supports pouch 16A in the horizontal and radial directions within container body 11. Incidentally, providing a rubber or resin lining on the outer surface of side portion 16f of pouch 16A increases resistance from the inner surface of body portion 11b of container body 11, further facilitating contraction in the roll-up direction and facilitating removal.

[0052] In this embodiment, the height H of the pouch 16A is also higher than the height from the inner surface of the bottom 11a of the container body 11 to the upper end of the shoulder 11c. In other words, the height is set to reach partway up the neck 11d. However, the height may be lower than the upper end of the shoulder 11c, or may be lower than the body 11b so that the pouch 16A is accommodated within the body 11b.

[0053] When such a pouch 16A is used, side portion 16f of pouch 16A is in reliable surface contact with the inner surface of body portion 11b, as shown in Fig. 5A. Therefore, when valve 13 is removed, by rotating it counterclockwise (in the direction of arrow N) as viewed from above, pouch 16 is stably wound up by flow path member 23. Furthermore, shoulder portion 16c of pouch 16A and the body portion following it are guided by the inner surface of shoulder portion 11c of container body 11, so pouch 16A can be smoothly pulled out.

[0054] In the above embodiment, the mounting tubular portion 26a provided at the lower end of the housing 13a of the valve 13 and the valve connecting portion 22 of the inner container 12, 12A have a generally D-shaped cross section, but they may be fitted together so as to rotate together. For example, a rectangular mounting tubular portion 26a and a valve connecting portion 22 shaped like an athletics track, as shown in FIG. 6A or 6B, may also be used. In addition to a rectangular shape, a hexagonal or pentagonal shape may also be used. When there is an even number of flat surfaces 22a, the valve connecting portion 22 can be welded to the mounting tubular portion 26a of the valve by simultaneously pressing the parallel flat surfaces 22a with a hot plate or a horn that emits ultrasonic waves.

[0055] The discharge container 10A shown in Figures 7 and 8 is substantially the same as the discharge container 10 in Figure 1, except that an inner bag 24 with pleats 24a is used as the inner container. The container body 11 and the valve 13 are substantially the same as those shown in Figure 1A. The inner bag 24 has a cylindrical valve connecting portion (neck portion) 24b that fits into the mounting cylindrical portion 26a of the valve 13, and a body portion 24c that extends in the vertical direction and is made freely expandable and contractable by a large number of pleats 24a provided radially. In this embodiment, the connecting member 17 and flow path member 23 of Figure 1A are not provided, but they can be provided.

[0056] The cross-sectional shapes of the valve connecting portion 24b and the mounting tubular portion 26a may be a substantially D-shape as shown in FIG. 1B, a square as shown in FIG. 6A, a track-like shape as shown in FIG. 6B, or other shapes that allow them to rotatably fit together. The inner bag 24 may be formed by blow molding from a laser-transparent synthetic resin such as polyethylene, polypropylene, EVAL, or polyamide. In this case, the housing 13a (mounting tubular portion 26a) may be molded from the same synthetic resin as the connecting member 17, which is laser-impermeable due to the addition of a pigment, and the two may be laser-welded together. Alternatively, the valve connecting portion 24b may be welded to the valve mounting tubular portion 26a by pressing the two flat surfaces 22a together with a hot plate or an ultrasonic horn.

[0057] This discharge container 10A can also be assembled in the same manner as described above. That is, the inner bag 24 is inserted into the container body 11 in the compressed state as shown in Figure 7, the cap 13f of the valve 13 is screwed partway onto the neck portion 11d of the container body 11, and the pressurizing agent P is filled into the container body 11 between the cap 13f and the neck portion 11d. Then, the cap 13f is firmly screwed all the way onto the male thread 11e of the neck portion 11d. Finally, the concentrate C is filled into the inner bag 24 via the stem 13b of the valve 13 and the mounting tube portion 26a. This causes the inner bag 24 to expand as shown in Figure 8.

[0058] After the user finishes dispensing the concentrate C using the dispensing container 10A, the inner bag 24 shrinks to its original shape (see FIG. 7). The cap 13f is then turned the other way to remove it from the container body 11, and the empty inner bag 24 is taken out. This facilitates recycling of the container body 11. This pleated inner bag 24 narrows after the concentrate C is used up, and barely comes into contact with the inner surfaces of the body 11b and shoulder 11c of the container body 11 when removed from the container body 11. However, the concentrate C may swell the valve connecting portion 24b, reducing the fitting force. This may cause the inner bag 24 to spin freely when the cap is rotated, making it slippery and causing it to fall off the valve 13. In the dispensing container 10A shown in FIGS. 7 and 8, the valve connecting portion 24b of the inner container 24 rotates together with the mounting tube portion 26a of the housing 13a, preventing the inner bag 24 from spinning freely and falling off the valve 13.

[0059] While preferred embodiments have been described above with reference to the drawings, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention. For example, although the container body 11 in the above embodiment is made of synthetic resin, it is also possible to use a metal can formed from a metal plate such as aluminum by impact machining, drawing and ironing, screw forming, or the like.

[0060] In the discharge container 10 of Fig. 1A, the lower part of the flow path member 23 is free inside the pouch 16, but the lower end of the flow path member 23 may be fixed to the pouch 16 by being sandwiched between two sheets 16a of the pouch 16. In this case, it becomes easier to roll up the pouch 16 by rotating the flow path member 23. Furthermore, in the discharge container 10 of Fig. 1A, the pouch is made of two sheets bonded together at their peripheral edges, but a gusset may be interposed between the side edges of the front and rear sheets. [Explanation of symbols]

[0061] 10, 10A discharge container 11 Container body 11a bottom 11b Torso 11c Shoulder 11d neck 11e Male thread 11f O-ring D1 Inner diameter of the body D2 Neck inner diameter B Pouch width H Pouch height T-tape 12, 12A inner container P Pressurizing agent C stock solution 12a sheet 13 Valve 13a Housing 13b stem 13c spring 13e Stem Rubber 13f Cap 13g female thread 13h Housing fixing part 16, 16A pouch 16a opening 16b Top of pouch 16c Pouch shoulder 16d Pouch neck 16e Notch 16f Side 17 Connecting member 17a aperture 18 Paste allowance 19 Storage area 20 Concatenation 21 Adhesive part 21a Internal passage 21b Flange part 22 Valve connection 22a flat surface 23 Flow path member (flow path section) 24 Inner bag 24a pleats 24b Neck (valve connection part) 24c torso 26a Mounting tube

Claims

1. A discharge container comprising a container body, a valve screwed to an opening of the container body, and an inner container filled with a concentrate, The inner container is accommodated in the container body, and a pressurizing agent is filled between the container body and the inner container, The inner container has a pouch, the width of the pouch is larger than the inner diameter of the opening of the container body, and the pouch is connected so as to rotate together with the valve even when subjected to sliding resistance from the inner surface of the container body. Discharge container.

2. A dispensing container comprising a container body, a valve screwed to an opening of the container body, and an inner container filled with concentrate, The inner container is accommodated in the container body, and a pressurizing agent is filled between the container body and the inner container, A discharge container in which the internal container has a valve connecting portion that is connected to the valve, and the connecting portion between the valve connecting portion and the mounting tubular portion of the valve that is connected to the valve connecting portion is non-cylindrical, thereby connecting the internal container so that it rotates together with the valve.

3. A dispensing container comprising a container body, a valve screwed to an opening of the container body, and an inner container filled with concentrate, The inner container is accommodated in the container body, and a pressurizing agent is filled between the container body and the inner container, The inner container has a valve connector connected to the valve, the valve connector having two parallel flat surfaces; A dispensing container whereby the inner container is connected to the valve so as to rotate together.

4. A dispensing container comprising a container body, a valve screwed to an opening of the container body, and an inner container filled with concentrate, The inner container is accommodated in the container body, and a pressurizing agent is filled between the container body and the inner container, the inner container has a valve connecting part that is connected to the valve, and the valve connecting part and the valve mounting tube part that is fitted into the valve connecting part have an outer member made of a laser-transmittable resin and an inner member made of a laser-impermeable resin; The inner container is connected to the valve so that it rotates together with the valve. Discharge container.

5. The container body includes a cylindrical body, a shoulder portion whose diameter decreases upward from the upper end of the body, and a cylindrical neck portion provided at the upper end of the shoulder portion, 5. The discharge container according to claim 1, wherein the inner container has a pouch, and the side of the pouch is curved in the rotation direction to remove the valve and is arranged to come into surface contact with the inner surface of the container body.

6. 6. The discharge container according to claim 5, wherein the width of the pouch is greater than the inner diameter of the barrel of the container body, and the side of the pouch is curved to be in surface contact with the inner surface of the barrel of the container body.

7. the inner container has a connecting member connected to the valve and a pouch welded to the connecting member, 7. The discharge container according to claim 1, wherein the height of the pouch is higher than the upper end of the shoulder of the container body, and the neck of the pouch is inserted into the neck of the container body.

8. the inner container has a connecting member and a pouch secured to the connecting member; The upper part of the connecting member is a valve connecting part that is connected to the valve, The discharge container according to any one of claims 1 to 7, wherein a flow path member is provided below the connecting member.

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