JP6660138B2 - Discharge container and discharge product using the same - Google Patents

Description

  The present invention stores the undiluted solution in the undiluted solution storage chamber between the outer bottle and the inner bottle, stores the propellant in the inner bottle, and discharges the undiluted solution while expanding the inner bottle toward the inner surface of the outer bottle. And a discharge product using the same.

  As shown in Patent Document 1, the applicant has an outer bottle made of synthetic resin and an inner bottle made of synthetic resin. We have proposed a multilayer bottle product that stores a propellant inside and discharges undiluted solution while expanding the inner bottle toward the inner surface of the outer bottle.

Japanese Patent No. 5487011

However, in the multilayer bottle product of Patent Document 1, the stock solution passage connecting the stock solution storage chamber and the outside air is outside the inner bottle (between the inner bottle and the outer bottle), and the inner bottle expands as the stock solution is discharged. By use, the undiluted liquid passage, particularly the shoulder between the outer bottle and the inner bottle near the boundary between the shoulder and the neck and the shoulder (diaphragm passage) near the boundary between the shoulder and the neck tends to be blocked. In other words, since the force in the expansion direction acts on the inner bottle due to the pressure of the propellant, the outer bottle and a part of the inner bottle abut, even though the stock solution remains, forming an isolated space containing the stock solution. There is a risk.
In view of the above problems, the present invention provides a discharge container that stores a stock solution in a stock solution storage chamber between an outer bottle and an inner bottle, and that does not easily block a stock solution passage for storing a propellant in the inner bottle. It is an object.

  The discharge container of the present invention has an outer bottle, a flexible inner bottle housed in the outer bottle, a valve assembly attached to the outer bottle, and closing the outer bottle and the inner bottle. A discharge container for storing the undiluted solution in the undiluted solution storage chamber, storing the propellant in the inner bottle, and discharging the undiluted solution while expanding the inner bottle toward the inner surface of the outer bottle. The bottle has a cylindrical body, a shoulder portion whose diameter is reduced upward from its upper end, and a cylindrical neck portion that extends upward from its upper end, and the inner bottle has a cylindrical body. A shoulder portion that decreases in diameter upward from the upper end thereof, and a cylindrical neck portion that extends upward from the upper end thereof, and is formed on the inner surface of the shoulder portion of the outer bottle and / or the outer surface of the shoulder portion of the inner bottle. A convex or concave part extending in the vertical direction is formed. It is.

In the discharge container of the present invention, it is preferable that the convex portion or the concave portion continuously extends from an inner surface of a shoulder portion of the outer bottle to an inner surface of a body portion of the outer bottle.
In the discharge container of the present invention, it is preferable that the convex portion or the concave portion continuously extends from an outer surface of a shoulder portion of the inner bottle to an outer surface of a body portion of the inner bottle.
The discharge container of the present invention, wherein a convex portion or a concave portion is formed on an inner surface of a shoulder portion of the outer bottle, and a concave portion or a convex portion is formed on an outer surface of a shoulder portion of the inner bottle. It is preferable that the convex portion or concave portion on the inner surface of the shoulder portion of the outer bottle does not overlap with the concave portion or convex portion on the outer surface of the shoulder portion of the inner bottle when is expanded.
The discharge container of the present invention is preferably one in which at least the body of the outer bottle expands elastically at a predetermined internal pressure (for example, 0.1 MPa (gauge pressure) or more). In this case, it is preferable that a groove or a ridge is formed on the outer surface of the shoulder portion and / or the trunk portion of the outer bottle along a convex portion or a concave portion of the inner surface of the outer bottle.

The discharge container according to the present invention, wherein a vertical passage is provided on an outer surface of a neck portion of the inner bottle and / or an inner surface of a neck portion of the outer bottle, and at least a plurality of convex portions are provided in a region extending radially outward from the vertical passage. Preferably, a plurality of concave portions or convex portions and a concave portion are arranged.
The discharge container according to the present invention, wherein a plurality of vertical passages are provided on an outer surface of a neck of the inner bottle and / or an inner surface of a neck of the outer bottle, and at least a region extending radially outward from the vertical passage is provided at least. It is preferable that the protrusion or the recess is provided.

  A discharge product of the present invention is characterized by comprising the discharge container of the present invention, a stock solution stored in a stock solution storage chamber thereof, and a propellant stored in an inner bottle.

  The discharge container of the present invention has an outer bottle, a flexible inner bottle housed in the outer bottle, a valve assembly attached to the outer bottle, and closing the outer bottle and the inner bottle. A discharge container for storing the undiluted solution in the undiluted solution storage chamber, storing the propellant in the inner bottle, and discharging the undiluted solution while expanding the inner bottle toward the inner surface of the outer bottle. The bottle has a cylindrical body, a shoulder portion whose diameter is reduced upward from its upper end, and a cylindrical neck portion that extends upward from its upper end, and the inner bottle has a cylindrical body. A shoulder portion that decreases in diameter upward from the upper end thereof, and a cylindrical neck portion that extends upward from the upper end thereof, and is formed on the inner surface of the shoulder portion of the outer bottle and / or the outer surface of the shoulder portion of the inner bottle. Since a convex or concave portion extending in the vertical direction is formed, the undiluted solution Between the chamber and the valve assembly, the stock solution close to the valve assembly is discharged first, and between the shoulders of the outer bottle and the inner bottle, which are relatively close, the inner bottle is the inner surface of the outer bottle. The space (shoulder passage) between the outer bottle and the inner bottle is reduced by expanding to the vicinity, or when closed, a gap passage extending in a substantially vertical direction by a convex portion or a concave portion can be secured. It can be prevented that the undiluted solution cannot be discharged during the process, and the remaining amount of undiluted solution after use can be reduced. In particular, in the inner bottle in which the shoulder at the boundary with the neck of the inner bottle expands and deforms first, it is possible to prevent the failure immediately after use.

  In the discharge container of the present invention, when the convex portion or the concave portion continuously extends from an inner surface of a shoulder portion of the outer bottle to an inner surface of a body portion of the outer bottle, the inner bottle extends to near an inner surface of the outer bottle. The clearance passage formed when the discharge container is formed can be provided long above and below the discharge container. Therefore, the undiluted solution can flow smoothly upward from the undiluted solution storage chamber along the body toward the valve assembly, and the remaining amount of undiluted solution can be further reduced. In addition, since the body of the outer bottle is strengthened in the vertical direction, deformation of the body itself such as buckling and deformation of the convex or concave portion such as buckling can be prevented even when the valve assembly is attached while being pressed against the outer bottle. Can be reliably formed.

  In the discharge container of the present invention, when the convex portion or the concave portion continuously extends from an outer surface of a shoulder portion of the inner bottle to an outer surface of a body portion of the inner bottle, the inner bottle expands to near an inner surface of the outer bottle. The gap passage formed when the above-described process is performed can be provided vertically above and below the discharge container, and the stock solution can smoothly flow upward from the stock solution storage chamber along the body toward the valve assembly, and the remaining stock solution can be further removed. The amount can be reduced. In addition, deformation of the inner bottle (expansion deformation and contraction deformation when filling the stock solution) can be controlled, for example, the occurrence of a bent line in a substantially horizontal direction dividing the inside of the inner bottle into upper and lower portions can be prevented.

  The discharge container of the present invention, wherein a convex portion or a concave portion is formed on an inner surface of a shoulder portion of the outer bottle, and a concave portion or a convex portion is formed on an outer surface of a shoulder portion of the inner bottle. When expanded, the convex portion or concave portion of the inner surface of the shoulder portion of the outer bottle is configured not to overlap with the concave portion or convex portion of the outer surface of the shoulder portion of the inner bottle, the convex portion of the outer bottle Alternatively, it is possible to prevent a phenomenon in which the concave portion overlaps with the concave portion or the convex portion of the inner bottle and the gap passage is eliminated. Further, a gap passage can be formed near both the convex portion or the concave portion of the outer bottle and the concave portion or the convex portion of the inner bottle, and the remaining amount of the undiluted solution can be further reduced.

In the discharge container of the present invention, when at least the body of the outer bottle expands elastically at a predetermined internal pressure, the stock solution in the stock solution receiving chamber receives the pressure of the propellant from the inside and shrinks the outside bottle from the outside. Due to the force, the stock solution is easily supplied to the valve assembly from the stock solution chamber. Therefore, the filling pressure of the propellant can be reduced.
Further, when a groove or a ridge is formed on the outer surface of the shoulder portion and / or the trunk portion of the outer bottle along a convex portion or a concave portion of the inner surface of the outer bottle, the propellant is filled and a predetermined amount is formed. When the internal pressure is applied, the outer bottle expands and the groove or ridge on the outer surface becomes smaller, or expands and deforms so that the depth of the groove or ridge becomes shallower, and the contour of the groove or ridge becomes thinner in appearance. . In other words, the appearance of the discharge container when the propellant is stored is different from that of the discharge container immediately before disposal where the propellant is discharged, and it is visually determined whether or not the propellant remains in the discharge container. Can safely be disposed of. In particular, when using a compressed gas as a propellant, discharging the undiluted solution increases the volume of the inner bottle and lowers the internal pressure, so the outer bottle attempts to return to its original shape, and the grooves and ridges on the outer surface are large. Or the depth of the groove or ridge becomes deeper. Therefore, as the stock solution decreases, the internal pressure for pressing the stock solution decreases, but the gap passage is easily secured, and the stock solution hardly remains. Furthermore, the remaining amount of the undiluted solution can be confirmed by the state of the grooves and ridges (elastic deformation state) on the outer surface of the outer bottle.

The discharge container according to the present invention, wherein a vertical passage is provided on an outer surface of a neck portion of the inner bottle and / or an inner surface of a neck portion of the outer bottle, and at least a plurality of convex portions are provided in a region extending radially outward from the vertical passage. In the case where a plurality of concave portions or convex portions and concave portions are arranged, the plurality of gap passages communicate with the vertical passage, so that the undiluted solution can be easily discharged to the end without clogging.
The discharge container according to the present invention, wherein a plurality of vertical passages are provided on an outer surface of a neck of the inner bottle and / or an inner surface of a neck of the outer bottle, and at least a region extending radially outward from the vertical passage is provided at least. When the convex portion or the concave portion is arranged, the stock solution is supplied from the stock solution storage chamber to the valve assembly through a plurality of vertical passages, so that a plurality of stock solution flow paths are formed, and the inner bottle is formed in a stable shape. Can be extended with And, by stably expanding the inner bottle, the gap passage and the vertical passage can be hardly blocked.

FIG. 1a is a side sectional view showing one embodiment of the discharge product of the present invention, and FIG. 1b is a sectional view taken along line X1-X1. FIG. 2A is a side sectional view of the outer bottle of the discharge product of FIG. 1, and FIG. 2B is a sectional view taken along line WW of FIG. 3A is a side sectional view of the inner bottle of the discharge product of FIG. 1, FIG. 3B is a sectional view taken along line Y1-Y1, FIG. 3C is a sectional view taken along line Y2-Y2, and FIG. It is sectional drawing of other forms of the inner bottle which can be used for a discharge product. FIG. 4A is a side sectional view showing a valve assembly of the discharge product of FIG. 1, and FIG. 4B is a side sectional view showing a use state thereof. 5a is a side sectional view of the double bottle of the discharged product of FIG. 1, FIG. 5b is a cross-sectional view taken along the line Z1-Z1, and FIGS. 5c and 5e are schematic diagrams showing a manufacturing process of the discharged product of FIG. FIG. 5D is a sectional view taken along line Z2-Z2 of FIG. 5C, and FIG. 5F is a sectional view taken along line Z3-Z3 of FIG. 5E. FIG. 6A is a side sectional view showing a state after using the discharge product of FIG. 1, and FIG. 6B is a sectional view taken along line X2-X2. 7A is a side sectional view showing another embodiment of the discharged product of the present invention, FIG. 7B is a sectional view taken along line X3-X3, and FIG. 7C shows a state after using the discharged product of FIG. 7A. It is sectional drawing. It is a partial section side view showing still another embodiment of a discharge product of the present invention. It is a side view which shows another embodiment of the discharge product of this invention.

  1 includes an outer bottle 11, a flexible inner bottle 12 housed in the outer bottle 11, a valve assembly 13 attached to the outer bottle 11, and closing the outer bottle 11 and the inner bottle 12. It has a stock solution C stored in a cylindrical stock solution storage chamber S1 between the outer bottle 11 and the inner bottle 12, and a propellant P stored in the inner bottle 12 (propellant storage chamber S2). The discharge product 10 operates the valve assembly 13 to communicate the undiluted solution storage chamber S1 with the outside, thereby expanding the inner bottle 12 toward the inner surface of the outer bottle 11 and contracting the undiluted solution storage room S1 to reduce the undiluted solution. C is to be discharged. The discharge product 10 is used by attaching the push button 15 or the like to the stem 26 of the valve assembly 13.

As shown in FIG. 2, the outer bottle 11 has a bottom portion 11a, a cylindrical body portion 11b, a tapered shoulder portion 11c whose diameter decreases upward from an upper end of the body portion, and an upper end of the shoulder portion. And a cylindrical neck 11d extending upward from the container.
The outer bottle 11 is provided with a plurality of ribs 16 extending vertically from the shoulder 11c to the body 11b. The rib 16 forms a convex portion 16a on the inner surface of the body 11b and the shoulder 11c of the outer bottle 11, and a groove 16b on the outer surface of the body 11b and the shoulder 11c of the outer bottle 11 (see FIG. 2B). The convex portion 16a supports the outer surface of the inner bottle 12 so that a gap (gap passage) is formed between the outer bottle 11 and the inner bottle 12 even if the inner bottle 12 expands to the vicinity of the inner surface of the outer bottle 11. Further, by extending the convex portion 16a to the body portion 11b, the gap passage can be formed to be vertically long. In particular, by forming the rib 16 near the bottom, a gap passage can be formed in the entire discharge container. In addition, since the outer bottle 11 is strengthened in the vertical direction by the ribs 16, there is no deformation such as buckling when attaching the valve assembly 13 to the outer bottle 11 while pressing the same against the outer bottle 11, and the shapes of the convex portions 16 a and the groove portions 16 b are maintained. A passage can be secured.
Preferably, a plurality of the ribs 16 are annularly arranged at equal intervals. In particular, it is preferable to provide 4 to 16 ribs 16. However, the number of ribs 16 may be one as long as a gap can be secured. The outer bottle 11 has eight ribs 16 formed at equal intervals.

  The bottom 11a has a hemispherical shape that is continuous from the lower end of the body 11b. In particular, the inner surface of the bottom 11a is a curved surface that is continuous from the lower end of the body 11b. By smoothly connecting the bottom 11a to the lower end of the body 11b in this manner, when the inner bottle 12 is expanded and deformed, the bottom 11a of the outer bottle 11 and the bottom 12a of the inner bottle 12 are brought into close contact. Can be. That is, the stock solution storage chamber S1 can be efficiently contracted, and the remaining amount of the stock solution C can be reduced. However, the shape of the bottom 11a is not particularly limited.

The body 11b is configured such that the outer bottle 11 can be expanded and deformed at a predetermined internal pressure within a range not exceeding the elastic limit. As shown in FIG. 2B, as the internal pressure becomes 0 (gauge pressure) to a predetermined internal pressure, the outer bottle 11 is deformed from the original state (solid line in FIG. 2b) to the expanded state of the outer bottle 11 (dashed line in FIG. 2b). I do. In the original state, the groove 16b of the outer bottle 11 is deep and distinct. On the other hand, in the expanded state, the groove 16b is flattened so as to be shallow. Note that the outer bottle 11 in FIG. 1B shows an expanded state. That is, the appearance differs between the original state and the expanded state, and the profile of the groove 16b becomes thinner in the expanded state. Therefore, the appearance of the outer bottle 11 differs between when the propellant P is filled and immediately before disposal after the propellant P is discharged.
The outer bottle is preferably one that expands and deforms when the inner pressure is 0.1 MPa (gauge pressure) or more. For example, when the outer bottle 11 is molded with a synthetic resin such as polyethylene terephthalate and nylon, the wall thickness of the body 11b is preferably set to 0.20 to 0.6 mm, particularly preferably 0.25 to 0.5 mm. In addition, you may make it the shoulder part 11c elastically deform similarly to the trunk | drum 11b.
However, the hardness of the body 11b is not particularly limited, and may be configured so that the body 11b is not deformed by the internal pressure of the outer bottle.

  A screw 11d1 for fixing the valve assembly 13 is formed on the outer periphery of the neck 11d. Below the screw 11d1, an outer seal holding portion 11d2 for holding an outer seal member 18 (see FIG. 1) for sealing between the outer bottle 11 and the valve assembly 13 is formed. Note that the outer seal holding portion 11d2 may be provided above the screw portion 11d1. Further, below the screw 11d1 and the outer seal holding portion 11d2, an annular flange 11d3 for holding the outer bottle 11 when assembling the discharge container 10 or suspending the outer bottle 11 when filling the undiluted solution C is formed. .

  As shown in FIG. 3, the inner bottle 12 has a bottom portion 12a, a cylindrical body portion 12b, a tapered shoulder portion 12c whose diameter is reduced upward from an upper end of the body portion, and an upper end of the shoulder portion. And a cylindrical neck 12d extending upward from the container. An outwardly protruding flange portion 12d1 is formed at the upper end of the neck portion 12d. The bottom 12a, body 12b and shoulder 12c of the inner bottle 12 have flexibility, and the neck 12d has rigidity. An inner seal member 19 for sealing between the inner container 12 and the valve assembly 13 is provided on the inner surface of the rigid neck 12d of the inner container 12 (see FIG. 1).

  On the outer surface of the inner bottle 12, a concave portion 17 extending vertically from the shoulder portion 12c toward the body portion 12c is formed. When the inner bottle 12 expands and deforms toward the outer bottle 11, the concave portion 17 does not overlap with the convex portion 16 a of the rib 16 of the outer bottle 11 or has the same angle around the axis of the inner (outer) bottle. (See FIG. 6b). That is, when the inner bottle 12 is expanded and deformed, the outer surfaces other than the concave portions of the inner bottle 12 are arranged so as to be shifted so as to come into contact with the convex portions 16 a of the outer bottle 11. Since the concave portion 17 is provided, even if the inner bottle 12 expands to the vicinity of the inner surface of the outer bottle 11, a gap extending vertically between the outer bottle 11 and the inner bottle 12 can be formed along the concave portion 17. . In particular, since the convex portion 16a of the outer bottle 11 and the concave portion 17 of the inner bottle 12 are arranged so as to be shifted from each other, a gap is formed near both the convex portion 16a of the outer bottle 11 and the concave portion 17 of the inner bottle 12. Can be. Therefore, the undiluted solution storage chamber is less likely to be divided, and the undiluted solution C is more unlikely to be isolated, and it is easy to discharge to the end. Further, by providing the concave portion 17 up to the body portion 12, the concave portion 17 exerts a rib effect of the inner bottle 12, and it is possible to prevent the inner bottle 12 from generating a broken line substantially perpendicular to the concave portion 17. That is, when the inner bottle 12 contracts or expands, the inner bottle 12 is prevented from being folded in two vertically. Further, the concave portion 17 is convex when viewed from the inner surface of the inner bottle 12, and also acts as a bent line extending vertically when the inner bottle 12 is contracted. 1 and 3, the contracted shape of the inner bottle 12 is described regularly, but it is only an outline and does not limit the contracted shape. The contracted shape of the inner bottle 12 is irregularly deformed according to not only the configuration of the inner bottle 12 but also the filling route of the stock solution C, the viscosity of the stock solution C, the filling pressure of the stock solution C, and the like. However, the concave portions 17 may be formed only on the outer surface of the inner bottle 12, and it is preferable that a plurality of the concave portions 17 be annularly arranged at equal intervals. However, the number of the concave portions 17 may be one. In this embodiment, the number of the concave portions 17 of the inner bottle 12 is equal to the number of the ribs 16 of the outer bottle 11 and is formed at equal intervals. In this case, it is easy to control the arrangement in which the rib 16 and the concave portion 17 are shifted, which is preferable. However, the number of the ribs 16 and the number of the concave portions 17 may be different.

Also, a plurality of vertically extending vertically extending grooves 12P are formed in a ring shape at regular intervals from the lower surface of the flange portion 12d1 of the inner bottle 12 to the outer surface of the upper end of the shoulder portion 12c via the outer surface of the neck portion 12d. They are arranged (see FIGS. 3a and 3c). The vertical passage groove 12P becomes a part of a stock solution passage of the stock solution C that connects the stock solution storage chamber S1 and the valve assembly 13 (atmosphere). The vertical passage groove 12P may be provided on the inner surface of the neck 11d of the outer bottle 11, or may be provided on both the inner surface of the neck 11b of the outer bottle 11 and the outer surface of the neck 12b of the inner bottle 12. You may. It suffices if at least a passage communicating with the undiluted solution storage chamber S1 and the outside air (the valve assembly 13) is formed. The vertical passage groove 12P is formed widely, and is provided so as to include a plurality of upper ends of the convex portion 16a and the concave portion 17 in a region extending radially outward from the groove bottom 12P1 of one vertical passage groove 12P in plan view. preferable. In the inner bottle 12, as shown in FIG. 3C, one area 16 includes one projection 16 and two recesses 17 in a plan view. By including the plurality of upper ends of the convex portion 16a and the concave portion 17 in the above-described region, the gap passage and the vertical passage groove 12P can be reliably communicated immediately before the stock solution C runs out. Also, by arranging the convex portion 16a and the concave portion 17 in the same manner for each of the plurality of vertical passage grooves 12P, the stock solution can be uniformly supplied from the stock solution storage chamber to the valve assembly, and the inner bottle has a stable shape. Can be extended with
Further, as shown in FIG. 3D, one recess 17 is included in each region extending radially outward from the groove bottom 12P1 of the vertical passage groove 12P in plan view with respect to each vertical passage groove 12P. You may. Note that, instead of the concave portion 17 of the inner bottle 12, a convex portion of the inner bottle 12, a convex portion or a concave portion of the outer bottle 11 may be used.
By connecting at least the concave portion 17 with the respective vertical passage grooves 12P, the stock solution can be uniformly supplied from the stock solution storage chamber to the valve assembly, and the inner bottle can be expanded in a stable shape. And, by stably expanding the inner bottle 12, the gap passage and the vertical passage are less likely to be blocked.

  The inner bottle 12 is inserted coaxially with the outer bottle 11. And the flange part 12d1 is arrange | positioned at the upper end opening part of the outer bottle 11 (refer FIG. 1). The bottom 12a, the body 12b, the shoulder 12c, and the neck 12d are substantially the same as the bottom 11a, the body 11b, the shoulder 11c, and the neck 11d of the outer bottle 11, respectively, except for the position of the recess 17. It is the same. That is, when the undiluted solution storage chamber S1 is filled with the undiluted solution C, the bottom portion 12a, the body portion 12b, and the shoulder portion 12c contract and deform so that the capacity of the inner bottle 12 is reduced (see dotted lines in FIGS. 1 and 3b). Therefore, when the stock solution C in the stock solution storage chamber S1 is discharged, the bottom portion 12a, the body portion 12b, and the shoulder portion 12c are expanded and deformed (return to the original shape) so that the capacity of the inner bottle 12 is increased, and the stock solution storage room S1 is efficiently used. Can shrink well. The neck 12d is inserted along the inner surface of the neck 11d of the outer bottle 11 and is not deformed by filling and discharging the undiluted solution C.

  The inner bottle 12 is such that the bottom 12a, the body 12b, and the shoulder 12c are deformed toward the inner surface of the bottom 11a, the body 11b, and the shoulder 11c of the outer bottle 11, respectively, by discharging the undiluted solution C. Alternatively, the outer bottle 11 may have a different shape from the inner shape. For example, the natural shape of the inner bottle 12 at the time of molding may be smaller than the inner shape of the outer bottle 11. In this case, by discharging the undiluted solution C, the bottom 12a, the body 12b, and the shoulder 12c expand to the substantially same shape as the bottom 11a, the body 11b, and the inner surface of the shoulder 11c of the outer bottle 11, respectively (elasticity). Or plasticity).

Examples of the material of the inner bottle 12 include synthetic resins such as polyethylene terephthalate, polyethylene, and polypropylene, elastomers such as urethane, ester, styrene, olefin, butadiene, and fluorine, silicone rubber, urethane rubber, isoprene rubber, and ethylene. Rubbers such as propylene rubber, ethylene propylene diene rubber, and styrene butadiene rubber, and mixed materials thereof are included.
The combination of the materials of the outer bottle 11 and the inner bottle 12 can be appropriately selected according to the application.

As shown in FIG. 4A, the valve assembly 13 includes a stock solution passage 13a in the valve that communicates the stock solution chamber (S1 in FIG. 1) with the outside, an inside bottle (the propellant housing chamber S2 in FIG. 2) and the outside. And a valve mechanism 21 that communicates / blocks the in-valve stock solution passage 13a and the in-valve propellant passage 13b. The stock solution passage 13a in the valve communicates with the stock solution storage chamber S1 through the vertical passage groove 12P. However, the structure of the valve assembly 13 is not particularly limited as long as the valve assembly 13 has at least a valve stock solution passage communicating with the vertical passage groove 12P and a valve mechanism for communicating / blocking the valve stock solution passage. In this embodiment, the valve assembly 13 is detachably fixed to the outer bottle 11.
As shown in FIG. 4b, the valve mechanism 21 includes two independent first stem passages 26a (part of the undiluted liquid passage 13a) or second stem passages 26b (part of the propellant passage 13b in the valve). Is formed. When the stem 26 is pushed down, the two passages in the valve communicate with each other. In addition, the push button 15 which connects the 1st intra-stem passage 26a and shuts off the 2nd intra-stem passage 26b is used for such a stem 26. However, the two stems may communicate / block the stock solution passage in the valve and the propellant passage in the valve.

In the method of manufacturing the discharge product 10, first, a double bottle containing an inner bottle 12 in an outer bottle 11 is prepared (see FIGS. 5A and 5B). In FIG. 5A, the inner bottle 12 is contracted in the outer bottle 11, but the prepared double bottle does not have to be contracted.
As a manufacturing method of the double bottle, there is a method in which the outer bottle 11 and the inner bottle 12 are respectively formed, and then the inner bottle 12 is folded and inserted into the outer bottle 11. At this time, the protrusions 16a of the outer bottle 11 and the recesses 17 of the inner bottle 12 are inserted so as not to overlap.
As a second manufacturing method of the double bottle, there is a method in which the outer bottle 11 is molded, an inner preform for the inner bottle is inserted therein, and the inner surface of the outer bottle 11 is used as a mold and blow molding is performed below the shoulder. No. In the inner preform, a flange portion 12d1, an inner cylindrical portion 12d2, and a vertical passage groove 12P are formed in a neck portion 12d. In this case, the outer shape of the inner bottle 12 can be formed into a shape that abuts on the inner surface of the outer bottle 11, that is, substantially the same shape as the inner surface of the outer bottle 11.
As a third manufacturing method of a double bottle, a method of preparing a double preform in which an inner preform for an inner bottle is inserted in an outer preform for an outer bottle, and blow molding the outer bottle 11 and the inner bottle 12 simultaneously. Is mentioned. More specifically, an outer preform in which a screw 11d1 is formed in a neck 11d and an inner preform in which a flange 12d1, an inner cylindrical portion 12d2, and a vertical passage groove 12P are formed in a neck 12d are individually molded by injection molding or the like. Insert the preform into the outer preform to prepare a two-layer preform. Then, the two-layer preform is formed at the same time as the shoulder portions of the outer bottle 11 and the inner bottle 12 by biaxial stretching blow or the like.
When preparing the double bottle by the second and third manufacturing methods of the double bottle, the groove 16b of the outer bottle 11 and the recess 17 of the inner bottle 12 overlap as shown in FIGS. For this reason, after the inner bottle 12 is molded, the inner bottle 12 is contracted by vacuum or the like as shown in FIGS. By rotating (for example, a half pitch), the convex portion 16a of the outer bottle 11 and the concave portion 17 of the inner bottle 12 do not overlap.

  After preparing the double bottle, the valve assembly 13 is attached to the outer bottle 11. Next, the stock solution C is filled into the stock solution storage chamber S1 via the stock solution passage 13a in the valve assembly 13. After that, the propellant P is filled into the inner bottle 12 (propellant storage chamber S2) through the propellant passage 13b in the valve of the valve assembly 13. Finally, the push button 15 is attached to the stem 26. Note that the order of filling the undiluted solution C and the propellant P may be reversed. In this case, the valve assembly 13 is attached to the outer bottle 11 of the double bottle, the propellant P is filled in the propellant storage chamber S2, the stem is pushed down, and only the valve-containing raw liquid passage 13a is communicated to allow the propellant P to communicate with the liquid storage chamber S1. The air may be discharged, and then the stock solution may be filled under pressure from the stock solution passage 13a in the valve. The undiluted solution C may be filled before attaching the valve assembly 13 to the outer bottle 11, and the propellant P may be filled just before attaching the valve assembly 13 to the outer bottle 11. By filling the propellant P, the outer bottle 11 expands via the inner bottle 12 and the stock solution C.

The method of using the discharge product 10 is to push down the stem 26 of the valve assembly 13 via the push button 15. As a result, the first intra-stem passage 26a of the stem 26 is opened, and the stock solution C is discharged. At this time, since the second intra-stem passage 26b of the stem 26 is closed by the push button 15, the pressurizing agent P is not ejected. Then, the inner bottle 12 expands in proportion to the discharge amount of the stock solution C.
By discharging the undiluted solution C, the inner bottle 12 expands to the vicinity of the inner surface of the outer bottle 11, as shown in FIGS. However, since the convex portion 16a of the outer bottle 11 and the concave portion 17 of the inner bottle 12 are shifted from each other, the convex portion 16a of the outer bottle 11 is located between the outer bottle 11 and the inner bottle 12, as shown in FIG. A large gap passage 25 that supports the outer peripheral surface of the inner bottle 12 so as to form a gap and that extends vertically near the recess 17 of the inner bottle 12 is formed. When a compressed gas is used as the propellant P, the internal pressure of the inner bottle 12 decreases as the volume of the inner bottle 12 increases. Therefore, the expansion of the outer bottle 11 is also gradually released, and the ribs 16 (the convex portions 16a and the groove portions 16b) gradually become deeper, so that the gap passage can be made larger. Therefore, the stock solution can be efficiently discharged to the end. Since the neck 12d of the inner bottle 12 is hard, the vertical passage groove 12P communicates with the gap passage to the end, and the undiluted solution storage chamber S1 and the valve assembly 13 always communicate. When the volume of the undiluted solution storage chamber S1 is reduced and the undiluted solution C is entirely discharged, the inner bottle 12 has flexibility and substantially abuts on the inner surface of the outer bottle 11. At this time, the elastic expansion of the outer bottle 11 is maintained by the pressure of the propellant in the inner bottle 12.

After discharging the entire amount (after use), the propellant P in the inner bottle 12 can be discharged to the outside via the pressurized agent passage 13b in the valve by removing the push button 15 and depressing the stem 26. By discharging the propellant P, the elastic expansion of the outer bottle 11 is released, and the contour of the groove 16b of the outer bottle 11 clearly appears. Thereby, the user can confirm that the propellant P has been discharged. Therefore, the user can safely remove the valve assembly 13 from the outer bottle 11. Finally, the components can be separated into the outer bottle 11, the inner bottle 12, and the valve assembly 13.
In the discharge product 10 of FIG. 1, the convex portion 16 a and the concave portion 17 are provided on the inner surface of the outer bottle 11 and the outer surface of the inner bottle 12, respectively. A part may be provided. In that case, it is preferable that a ridge is formed on the outer surface of the outer bottle 11 along the concave portion. In this case, the outer bottle 11 is preferably elastically expanded, so that the contour of the ridge becomes thin, that is, the appearance changes due to the internal pressure of the outer bottle 11. Further, only the convex portion 16a may be formed on one of the inner surface of the outer bottle 11 and the outer surface of the inner bottle 12, or only the concave portion 17 may be formed. Further, a convex portion or a concave portion may be provided on both.

7 is configured such that the rib 16 of the outer bottle 11 and the recess 17 of the inner bottle 12 have the same angle about the axis of the inner (outer) bottle. The other configuration is substantially the same as the discharge product 10 of FIG.
As shown in FIG. 7C, even if the inner bottle 12 abuts against the inner surface of the outer bottle 11, the angle between the convex portion 16a and the concave portion 17 of the rib 16 is different because the outer bottle 11 is expanded by the internal pressure. Thus, a gap passage is formed between the convex portion 16a and the concave portion 17 without overlapping.

8 has a rib 16 provided only on the shoulder 11c of the outer bottle 11, and a concave portion 17 provided only on the shoulder 12c of the inner bottle 12. As shown in FIG. The other configuration is substantially the same as the discharge product 10 of FIG.
Also in this case, the space (shoulder passage) between the shoulder portion 11c of the outer bottle 11 and the shoulder portion 12c of the inner bottle 12 in which the stock solution passage is most likely to be closed is secured by the respective convex portions 16a and concave portions 17. Therefore, the stock solution C can be discharged to the end. In addition, you may provide the convex part 16a or the concave part 17 in either the shoulder part 11c of the outer bottle 11, or the shoulder part 12c of the inner bottle 12. 1 is provided with a rib projecting in a direction opposite to the outer bottle 11 of the discharge product 10 of FIG. 1 so that a concave portion is formed on the inner surface of the shoulder portion of the outer bottle 11 and a convex portion is formed on the outer surface of the shoulder portion. You may. Also in this case, the concave portion of the outer bottle and the convex portion of the inner bottle may be provided at the same angle or may not be provided at the same angle.

  In the discharge product 40 of FIG. 9, the body 11b of the outer bottle 11 is narrowed toward the axis at the center. The other configuration is substantially the same as the discharge product 10 of FIG. By providing the constricted portion 41 in this way, it is easy for the user to hold. In addition, by providing such a constricted portion 41, the inner bottle 12 and the outer bottle 11 can easily come into contact with each other in a part. However, even in such a case, by providing the continuous rib 16 and the concave portion 17 from the shoulder portion 11c to the body portion 11b, the outer bottle 11 has an outer bottle near the shoulder portion and the inner bottle 12 near the shoulder portion and the constricted portion. Although the bottle 11 and the inner bottle 12 are easily brought into contact with each other, a gap passage can be secured by the rib 16 and the concave portion 17.

C Stock solution P Propellant S1 Stock solution storage chamber S2 Propellant storage chamber 10, 10a Discharged product 11 Outer bottle 11a Bottom 11b Body 11c Shoulder 11d Neck 11d1 Screw 11d2 Outer seal holder 11d3 Annular flange 12 Inner bottle 12a Bottom 12b Reference Signs List 12c Shoulder portion 12d Neck portion 12d1 Flange portion 12P Vertical passage groove 13 Valve assembly 13a Undiluted liquid passage in valve 13b Propellant passage in valve 15 Push button 16 Rib 16a Protrusion 16b Groove 17 Depression 18 Outer seal material 19 Inner sealant 21 Valve mechanism 26 Stem 26a First passage in stem 26b Passage in second stem 30 Discharge product 40 Discharge product 41 Constriction

Claims (8)

With an outer bottle,
An inner bottle that is housed in the outer bottle and whose outer shape is substantially the same as the inner shape of the outer bottle ,
A valve assembly that is attached to the outer bottle and closes the outer bottle and the inner bottle,
A discharge container for storing the undiluted solution in the undiluted solution storage chamber between the outer bottle and the inner bottle, storing the propellant in the inner bottle, and discharging the undiluted solution while expanding the inner bottle toward the inner surface of the outer bottle. So,
The outer bottle has a cylindrical body, a shoulder portion whose diameter is reduced upward from its upper end, and a cylindrical neck portion that extends upward from its upper end,
The inner bottle has a cylindrical flexible body portion, a flexible shoulder portion whose diameter is reduced upward from its upper end, and an upper surface extending upward from its upper end, and an inner surface on the neck portion of the outer bottle. has a neck and having a cylindrical rigid that will be inserted along,
A convex portion or a concave portion extending substantially vertically is formed on the inner surface of the shoulder portion of the outer bottle and / or the outer surface of the shoulder portion of the inner bottle ,
On the outer surface of the neck of the inner bottle and / or on the inner surface of the neck of the outer bottle, there is provided a vertical passage for discharging the undiluted solution,
In a region extending radially outward from the vertical passage, at least one of a plurality of convex portions, a plurality of concave portions or convex portions and concave portions is arranged ,
Discharge container. With an outer bottle,
An inner bottle that is housed in the outer bottle and whose outer shape is substantially the same as the inner shape of the outer bottle ,
A valve assembly that is attached to the outer bottle and closes the outer bottle and the inner bottle,
A discharge container for storing the undiluted solution in the undiluted solution storage chamber between the outer bottle and the inner bottle, storing the propellant in the inner bottle, and discharging the undiluted solution while expanding the inner bottle toward the inner surface of the outer bottle. So,
The outer bottle has a cylindrical body, a shoulder portion whose diameter is reduced upward from its upper end, and a cylindrical neck portion that extends upward from its upper end,
The inner bottle has a cylindrical flexible body portion, a flexible shoulder portion whose diameter is reduced upward from its upper end, and an upper surface extending upward from its upper end, and an inner surface on the neck portion of the outer bottle. has a neck and having a cylindrical rigid that will be inserted along,
A convex portion or a concave portion extending substantially vertically is formed on the inner surface of the shoulder portion of the outer bottle and / or the outer surface of the shoulder portion of the inner bottle ,
On the outer surface of the neck of the inner bottle and / or on the inner surface of the neck of the outer bottle, there are provided a plurality of vertical passages for discharging the undiluted solution,
In each region extending radially outward from the longitudinal passage, at least one of the protrusions or the recesses is arranged,
Discharge container. The protrusion or the recess extends continuously from the inner surface of the shoulder of the outer bottle to the inner surface of the body of the outer bottle,
Claim 1 or 2 discharge container according. The convex portion or the concave portion continuously extends from an outer surface of a shoulder portion of the inner bottle to an outer surface of a body portion of the inner bottle,
The discharge container according to claim 1. A convex or concave portion is formed on the inner surface of the shoulder of the outer bottle,
A concave portion or a convex portion is formed on the outer surface of the shoulder portion of the inner bottle,
When the inner bottle is expanded, the convex portion or concave portion on the inner surface of the shoulder portion of the outer bottle is configured not to overlap with the concave portion or convex portion on the outer surface of the shoulder portion of the inner bottle,
Dispensing container of claims 1 4, wherein any one. At least the body of the outer bottle expands elastically at a predetermined internal pressure,
A discharge container according to any one of claims 1 to 5 . On the outer surface of the shoulder and / or body of the outer bottle, a groove or a ridge is formed along a convex or concave portion of the inner surface of the outer bottle.
The discharge container according to claim 6. A discharge product comprising the discharge container according to any one of claims 1 to 7 , a stock solution stored in a stock solution storage chamber, and a propellant stored in an inner bottle.