JP2019156415A - Discharge container and discharging product - Google Patents

Abstract

To provide a discharge container capable of suppressing formation of a gas reservoir.SOLUTION: A discharge container comprises: a container body 10; a piston unit 20 partitioning the container body 10 into a first stock solution storing chamber 12, a second stock solution storing chamber 13 and a pressurizing agent storing chamber 14, sliding the container body 10 inside by the pressure of a pressurizing agent P stored in the pressurizing agent storing chamber 14, and pressurizing the stock solution storing chambers 12, 13; and a valve assembly 30 communicated with each of the stock solution storing chambers 12, 13, respectively. In the piston unit 20, the second stock solution storing chamber 13 side has gas permeability and a space S is formed therein, and the piston unit is set in such a way that the pressure in the space S is lower than the pressure applied to the second stock solution storing chamber 13, when the pressurizing agent P is stored in the pressurizing agent storing chamber 14.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a discharge container for discharging a stock solution by the pressure of a pressurizing agent and a discharge product using the discharge container.

  Patent Documents 1 and 2 include a container body, a piston unit that divides the container body into two stock solution storage chambers and a pressurizing agent storage chamber, and a valve assembly that communicates with each of the two stock solution storage chambers. A liquid discharge container is disclosed. In this two-liquid discharge container, the piston unit connects the first piston that pressurizes the upper stock solution storage chamber, the second piston that pressurizes the lower stock solution storage chamber, and the piston that connects the first piston and the second piston. It has a joint. In the two-liquid discharge container having such a configuration, since two stock solutions are discharged while simultaneously pressurizing with one piston unit, even if there is a difference in viscosity between the two stock solutions, it can be discharged at an equal ratio from the beginning to the end. it can.

International Publication No. 2015/064717 Special table 2013-537503 gazette

  By the way, when the stock solution is filled through the valve assembly, a gas reservoir may be formed in the stock solution storage chamber. Specifically, the air in the stock solution storage chamber is evacuated prior to filling the stock solution, but air remains in the passages in the valve assembly and in the gaps between the pistons and the container main body, so this air enters the stock solution storage chamber. And move to the surface as a gas reservoir (bubbles). Some stock solutions generate gas by decomposition or the like, and a gas reservoir may be formed after a while after filling.

  Gas reservoirs can impair the appearance of the product. Further, if the stock solution is discharged in a state where the gas reservoir is involved, the stock solution may be scattered.

  Therefore, an object of the present invention is to provide a discharge container that can suppress the formation of a gas reservoir.

  The discharge container of the present invention partitions the container body 10 and the container body 10 into a stock solution housing chamber 3 and a pressurizing agent housing chamber 14, and the pressure of the pressurizing agent P accommodated in the pressurizing agent housing chamber 14. Is provided with a piston unit 20 that pressurizes the stock solution storage chamber 3 and a valve assembly 30 that communicates with the stock solution storage chamber 3. The piston unit 20 is connected to the stock solution storage chamber 3 side (stock solution storage chamber). 3) is gas permeable and has a space S therein, and the pressure in this space S is when the pressurizing agent P is stored in the pressurizing agent storage chamber 14. The undiluted solution storage chamber 3 is set to be smaller than the pressure received.

  The stock solution storage chamber 3 is further divided into a first stock solution storage chamber 12 and a second stock solution storage chamber 13 by a piston unit 20, and the piston unit 20 pressurizes the first stock solution storage chamber 12. 21, a second piston 22 that pressurizes the second stock solution storage chamber 13, and a piston joint 23 that connects the first piston 21 and the second piston 22, and the piston joint 23 has gas permeability. At the same time, it preferably faces the second stock solution storage chamber 13 and has the space S therein.

  The piston joint 23 includes a double structure portion 24c including a core portion 24a and an outer cylinder portion 24b surrounding the outer periphery of the core portion 24a, and the space S is formed between the core portion 24a and the outer cylinder portion 24b. Preferably it is formed.

  It is preferable that the piston joint 23 includes a lid portion 25 that is fitted between the core portion 24a and the outer cylinder portion 24b.

  The gas absorbent 4 may be accommodated in the space S.

  The discharge product of the present invention is a discharge product in which the stock solution C and the pressurizing agent P are contained in the discharge container 1, and the stock solution C contains hydrogen peroxide. Moreover, it is preferable that the stock solution containing hydrogen peroxide is filled in the second stock solution storage chamber 13.

  In the discharge container of the present invention, by storing the pressurizing agent in the pressurizing agent storage chamber, the gas in the stock solution storage chamber can be transmitted to the space side, and the formation of a gas reservoir in the stock solution storage chamber is suppressed. Can do.

  The stock solution storage chamber is further divided into a first stock solution storage chamber and a second stock solution storage chamber by a piston unit, and the piston unit includes a first piston that pressurizes the first stock solution storage chamber, and a second stock solution storage chamber. A second piston for pressurization; a piston joint for connecting the first piston and the second piston; the piston joint has gas permeability and faces the second stock solution storage chamber; If the space is formed, the formation of a gas reservoir in the second stock solution storage chamber can be particularly suppressed.

  When the piston joint includes a double structure part including a core part and an outer cylinder part surrounding the outer periphery of the core part, and the space is formed between the core part and the outer cylinder part, the space Even if the pressure difference between the pressure agent storage chamber and the pressure agent storage chamber is as large as 0.4 to 1 MPa, for example, the piston joint is not deformed, and the gas in the second stock solution storage chamber permeates the outer cylinder and easily moves into the space. .

  If the piston joint has a lid that fits between the core and the outer cylinder, the strength of the piston joint increases and deformation occurs even if the pressure difference between the space and the pressurizing agent storage chamber is large. do not do.

  If the gas absorbent is accommodated in the space, the air that has entered the space in advance or the gas that has entered the space is absorbed by the gas absorbent, so that the pressure increase in the space can be suppressed. The gas permeability to can be maintained. Furthermore, it is possible to prevent performance degradation caused by contact of the gas absorbent with the stock solution.

  The discharge product according to the present invention suppresses the formation of a gas reservoir in the stock solution storage chamber because oxygen can be transmitted to the space side despite containing hydrogen peroxide that easily generates oxygen by decomposition. be able to. In addition, when the stock solution containing hydrogen peroxide is filled in the second stock solution storage chamber, oxygen generated by the decomposition of hydrogen peroxide is easily taken into the space, and bubbles in the second stock solution storage chamber are Occurrence can be suppressed.

1A and 1B are cross-sectional views, FIG. 3B is a plan view, FIG. 3C is a bottom view, and FIG. 4D is a lateral end view of a piston unit, showing an embodiment of the discharge product of the present invention. It is a disassembled sectional view of a piston unit. (A) is an aerosol valve, (B) is a valve holder, (C) is a sectional view showing a connecting member. It is sectional drawing which shows the discharge product which finished discharging stock solution.

  Next, an embodiment of the discharge container of the present invention will be described in detail based on the drawings. As shown in FIG. 1, the discharge container 1 of the present invention includes a container body 10, a piston unit 20 that divides the container body 10 into a stock solution storage chamber 3 and a pressurizing agent storage chamber 14, and a stock solution storage chamber 3. And a valve assembly 30 communicating therewith. The stock solution storage chamber 3 is further divided into a first stock solution storage chamber 12 and a second stock solution storage chamber 13 by a piston unit 20, and two stock solutions C 1 and C 2 and a pressurizing agent P are separately provided in the container body 10. Can be accommodated. The piston unit 20 slides inside the container body 10 by the pressure of the pressurizing agent P, and pressurizes each of the stock solution storage chambers 12 and 13. Accordingly, the discharge container 1 can be used as a two-liquid discharge container that can discharge two stock solutions C1 and C2 at a predetermined ratio from start to finish. A discharge container (two-liquid discharge product) 2 is a container in which the stock solutions C1 and C2 and the pressurizing agent P are accommodated in the discharge container 1. Hereinafter, each component will be described in detail.

  As shown in FIG. 1A, the container main body 10 has an inner cylinder and an outer diameter both having a small diameter at the upper cylindrical portion 10a from the approximate center in the height direction and a large diameter at the lower cylindrical portion 10b at the lower portion. A cylindrical barrel portion 10e having an enlarged diameter step portion 10d formed between the lower cylindrical portion 10b, a tapered shoulder portion 10f formed at the upper end of the barrel portion 10e, and an upper end of the shoulder portion 10f. A cylindrical neck portion 10g formed on the neck portion 10b and an opening 10c having an enlarged diameter above the neck portion 10g, and a bottom lid 11 provided with a gas filling valve 11a is attached to the lower end of the trunk portion 10e. The container which has a bottom part is comprised.

  The container body 10 is made of a synthetic resin. Specifically, it is manufactured from a thermoplastic resin such as polyethylene terephthalate, polybutylene terephthalate, polyarylate, polyamide, polyethylene, polypropylene, and cyclic olefin copolymer that is not eroded by the stock solution C to be filled. Further, a synthetic resin material having translucency may be used so that the remaining amount, state, etc. of the stock solution C can be visually observed. In addition, in order to protect the stock solution C from ultraviolet rays, an ultraviolet absorber may be added to the thermoplastic resin to mold the container body 10, and the inside or outer surface of the container body 10 may be coated with carbon, alumina, silica, or the like. A material may be provided.

  As a manufacturing method, in order to provide pressure resistance, it is preferable to manufacture by blow molding such as biaxial stretch blow molding. In this case, for example, a parison formed by injection molding, extrusion molding or the like is heated and expanded in a mold while being stretched in the axial direction to be molded into a predetermined shape. The neck portion 10g and the opening portion 10c are usually the same as the parison and are thick because they do not swell. In the case of blow molding, a bottom portion is formed, but the bottom portion is excised and the opening generated by the excision is closed by the bottom lid 11. The bottom lid 11 is attached to the trunk portion 10e by welding (laser welding, ultrasonic welding, etc.) or adhesion, for example. In particular, when the portion (tubular body) excluding the bottom lid 11 of the container body 10 is colorless and transparent, and the bottom lid 11 is made of the same material as the cylindrical body and is colored, such as black, from the side surface of the cylindrical body The bottom lid 11 can be welded by the transmitted laser.

  The piston unit 20 has a substantially convex shape (inverted T-shape) in which the overall shape is axisymmetric. The piston unit 20 includes a first piston 21 that slides in the upper cylinder portion 10a, a second piston 22 that slides in the lower cylinder portion 10b, and a piston that connects the first piston 21 and the second piston 22. It is configured by combining the joint 23 integrally. Then, by accommodating the piston unit 20 in the container body 10, a first stock solution storage chamber (upper storage chamber) 12 is formed in the upper cylindrical portion 10a between the valve assembly 30 and the first piston 21, A second stock solution storage chamber (lower storage chamber) 13 is formed in the lower cylinder portion 10 b between the first piston 21 and the second piston 22, and in the lower cylinder portion 10 b between the second piston 22 and the bottom lid 11. A pressurizing agent storage chamber 14 is formed in the upper part. In addition to the piston unit 20, the container body 10 has an axisymmetric shape. Further, the central axis of the piston unit 20 is located on the central axis of the container body 10. Accordingly, the first stock solution storage chamber 12, the second stock solution storage chamber 13, and the pressurizing agent storage chamber 14 are formed on concentric axes.

  As shown in FIG. 2, the first piston 21 includes an inner cylinder 21b having a bottom 21a, a disk part 21c extending radially outward from the upper end of the inner cylinder 21b, and a lower side from the outer edge of the disk part 21c. The outer cylinder 21d extends in the direction from the lower end of the outer cylinder 21d and the first seal portion 21e protrudes radially outward from the lower end of the outer cylinder 21d. A protrusion 21d1 that engages with a fitting groove 23d of a piston joint 23 described later is provided on the inner peripheral surface of the outer cylinder 21d. An insertion hole 21f for inserting the tube 40 is formed at the center of the bottom portion 21a. An annular projection 21g is provided so as to surround the outer periphery of the insertion hole 21f. The annular protrusion 21g is a part used for attaching a holding member 60 described later to the first piston 21. The 1st seal | sticker part 21e is contact | abutting over the perimeter of the inner surface of the upper cylinder part 10a, and divides the 1st stock solution storage chamber 12 and the 2nd stock solution storage chamber 13 liquid-tightly. The cross-sectional shape is an arc shape that bulges in the radially inward direction, the center portion of the arc is integrally connected to the outer periphery of the lower end of the outer cylinder 21d, and both ends of the arc are centered on the upper cylinder portion 10a. By elastically abutting each of the inner surfaces of the upper cylindrical portion 10a, even if the distance from the inner surface of the upper cylindrical portion 10a changes to some extent during sliding due to variations in the inner diameter of the upper cylindrical portion 10a, etc., liquid-tight sealing continues. Can be done.

  The second piston 22 has an inner cylinder 22b having an upper bottom 22a, a disk portion 22c extending radially outward from an outer edge of the upper bottom 22a of the inner cylinder 22b, and extends downward from the outer edge of the disk portion 22c. An outer cylinder 22d and a second seal portion 22e projecting radially outward from the lower end of the outer cylinder 22d are provided. The second seal portion 22e has the same configuration as the first seal portion 21e, and airtightly partitions the second stock solution storage chamber 13 and the pressurizing agent storage chamber 14 not only during normal operation but also during sliding. Continue to (seal). Further, an upper cylinder 22f extends from the center of the upper bottom 22a of the inner cylinder 22b, and a peripheral wall 22g rises from the upper surface of the disk portion 22c. The inner cylinder 22b increases the strength of the second piston 22, contacts the inner cylinder 11c of the bottom cover 11, and secures the height of the pressurizing agent storage chamber 14 in the vertical direction. This is a part for preventing the bottom cover 11 from contacting the outer cylinder 11b and preventing the bottom cover 11 from being deformed by heat conduction from the bottom cover 11 when the bottom cover 11 is welded. The peripheral wall 22g is a part used for fitting with the piston joint 23 in order to increase the strength of the second piston 22. The upper cylinder 22f is also a part for increasing the strength of the second piston 22. A protrusion 22g1 for engaging with the fitting groove 23d of the piston joint 23 is provided on the inner peripheral surface of the peripheral wall 22g.

  The second piston 22 may be provided with a coating agent such as carbon or silica on the upper surface and / or the lower surface in order to suppress the permeation of the pressurizing agent P to the second stock solution storage chamber 13 to increase the gas barrier property. preferable. In particular, by providing a coating agent also on the second seal portion 22e, the slidability within the container body 10 is enhanced. The first piston 21 is not particularly limited as to whether it is gas permeable or gas impermeable. Therefore, the same material as the second piston 22 or a different material may be used. A coating agent such as carbon or silica may be provided in order to increase the slidability.

  The piston joint 23 is a substantially columnar part formed so that its outermost diameter is substantially equal to the inner diameter of the upper cylindrical portion 10a, and a recess 23b is provided at the center of the upper end. The recess 23 b is for fitting with the inner cylinder 21 b of the first piston 21. Further, an annular fitting groove 23d continuous in the circumferential direction is provided on the outer peripheral surface. When the inner cylinder 21b of the first piston 21 is inserted into the recess 23b, the protrusion 21d1 engages with the fitting groove 23d, and the disc part 21c and the outer cylinder 21d of the first piston 21 are supported by the piston joint 23. As a result, the deformation of the first piston 21 when the piston unit 20 slides can be suppressed, and the first stock solution can be evenly pressurized. In addition, the recessed part 23b and the fitting groove 23d are provided also in the lower end side. When the second piston 22 is attached to the lower end of the piston joint 23, the upper cylinder 22f of the second piston 22 is accommodated in the recess 23b, and the protrusion 22g1 engages with the fitting groove 23d.

  A through-hole 23a is formed at the center of the piston joint 23 in the axial direction (on the central axis). The through hole 23a penetrates from the recess 23b on the upper end side to the recess 23b on the lower end side. The through hole 23a is a passage for supplying the stock solution C2 accommodated in the lower cylinder portion 10b to the valve assembly 30, and is also a housing portion for housing the tube 40 that also functions as a passage for the stock solution C2. The through hole 23a is connected to the outer peripheral side of the piston joint 23 via a groove 23c provided from the lower recess 23b to the lower surface. Therefore, when the second piston 22 is attached to the lower end of the piston joint 23, a passage is formed between the lower surface of the piston joint 23 and the upper surface of the second piston 22 so as to communicate the second stock solution storage chamber 13 and the through hole 23a. Is done. A plurality of grooves 23c are provided radially from the central axis of the piston joint 23 (for example, Y-shaped, X-shaped, * -shaped). In a state where the piston unit 20 is viewed in plan, the center of gravity of the piston unit 20 is from the central axis. In order not to deviate, they are provided at equal intervals (equal angles). Thereby, the stock solution C2 in the second stock solution storage chamber 13 is evenly led out, the inclination of the second piston 22 is prevented, and it is difficult to come off from the piston joint 23.

  The piston joint 23 having the above-described configuration is composed of two members: a main body portion 24 occupying most of the piston joint 23 and a lid portion 25 attached to the upper end of the main body portion 24. This is because the space S is formed in the piston joint 23. Therefore, in the case where the method of providing the space S in the piston joint 23 is adopted, the piston joint 23 does not necessarily need to be constituted by the two members of the main body portion 24 and the lid portion 25. For example, it is conceivable to secure the space S by arranging a hollow member made of synthetic resin or a member with many voids such as a sponge in a mold for molding the piston joint 23.

  The main body portion 24 includes a double structure portion 24c including a core portion 24a located on the center axis side of the piston unit 20 and an outer cylinder portion 24b surrounding the outer periphery of the core portion 24a. A space S is formed between the core portion 24a and the outer cylinder portion 24b. The space S is substantially cylindrical. Since the through hole 23a passes through the center of the core portion 24a, it can be said that the core portion 24a has a cylindrical shape, and it can be said that the space S is formed by a double cylinder structure. The core part 24a and the outer cylinder part 24b are closed by connecting the lower ends thereof, while the upper end side is not connected, and the core part 24a and the outer cylinder part 24b are open. In addition, you may provide the rib R radially from the outer peripheral surface of the core part 24a to the inner peripheral surface of the outer cylinder part 24b (refer the dashed-dotted line of FIG. 1D). In this case, because the pressure difference between the second stock solution storage chamber 13 and the space S increases against the pressure received by the outer cylinder portion 24b, the outer cylinder portion 24b is thinned to increase gas permeation and weight reduction. Can do.

  The lid part 25 covers the upper surface of the main body part 24, extends downward from the base part 25a and comes into contact with the upper surface of the core part 24a, and is provided between the core part 24a and the outer cylinder part 24b. A fitting portion 25b to be fitted into the opening 24d, and a flange portion 25c extending radially outward from the base portion 25a and contacting the upper surface of the outer cylinder portion 24b. The fitting portion 25b has a substantially cylindrical shape and is fitted into the opening 24d without a gap. Therefore, the fitting part 25b plays the role which transmits the pressure which the outer cylinder part 24b receives to the core part 24a side, and suppresses the deformation | transformation to the radial inside direction of the outer cylinder part 24b.

  The lid portion 25 and the main body portion 24 are fixed by a method that does not form a gap between them, for example, welding (ultrasonic welding) or adhesion. Therefore, the stock solution C never enters the space S. In other words, the space S is a liquid-tight space.

  On the other hand, the piston joint 23 facing the second stock solution storage chamber 13 has higher gas permeability than the container body 10. For example, when the container body 10 made of polyethylene terephthalate is used, it is preferable to use a synthetic resin such as polyethylene, polypropylene, polycarbonate, or polyurethane. Therefore, gas permeates through the space S. Specifically, since the outer peripheral surface of the piston joint 23 faces the second stock solution storage chamber 13, the gas in the second stock solution storage chamber 13 permeates into the space S. The pressure in the space S is atmospheric pressure. However, it may be negative pressure. Further, when the pressurizing agent P is stored in the pressurizing agent storage chamber 14, it may be in a pressurized state as long as it is lower than the pressure received by the second stock solution storage chamber 13. The thickness t1 of the outer cylinder part 24b that separates the space S and the second stock solution storage chamber 13 is preferably 1 to 5 mm, for example. If the thickness is too thick, the piston joint 23 becomes heavy, resulting in an increase in the weight of the product, and the user is likely to be loaded. Further, if the thickness is too thin, the strength and rigidity of the piston joint 23 will be affected. is there. As shown in FIG. 1A, a gas absorbent 4 such as an oxygen absorbent is accommodated in the space S.

  The valve assembly 30 communicates the first stock solution storage chamber 12 with the outside air, and the second stock solution storage chamber 13 with the outside air in an independent state. As shown in FIGS. 1A and 1B, the two aerosol valves 31 are provided. , 32, a valve holder 33 for holding these aerosol valves 31, 32, and a cover cap 34 for fixing the two aerosol valves 31, 32 and the valve holder 33 to the container body 10.

  The aerosol valve is composed of a first valve 31 and a second valve 32. As shown in FIG. 3A, the first and second valves 31 and 32 include a bottomed cylindrical housing 31a, a stem 31b accommodated in the housing 31a so as to be movable up and down, and a stem hole of the stem 31b. A conventionally known structure that includes a stem rubber 31d that seals 31c, a spring 31e that biases the stem 31b upward, and a cover member 31f that fixes the stem 31b and the spring 31e to the housing 31a. Is.

  As shown in FIG. 3B, the valve holder 33 includes a holding portion 33a that holds the first and second valves 31, 32, and a plug portion 33b that is inserted into the opening 10c of the container body 10 and closes the opening 10c. It is configured. The holder 33a is provided with two holder parts 33c penetrating in the vertical direction, and the first and second valves 31 and 32 are held in the valve holder 33 by being fitted into the holder part 33c ( (See FIG. 1A). An O-ring 51 is provided on the outer periphery of the housing 31a of the first and second valves 31, 32, and is fitted into the holder portion 33c so that the space between the inner surface of the holder portion 33c and the outer surface of the housing 31a. A seal is formed on the surface. An O-ring 52 is also provided on the outer periphery of the plug portion 33b. Therefore, if the plug portion 33b is inserted into the opening portion 10c, a seal is formed between the outer surface of the plug portion 33b and the inner surface of the opening portion 10c.

  As shown in FIGS. 1A and 1B, the cover cap 34 is obtained by pressing a thin metal plate such as aluminum into a cup shape, and presses the first valve 31 and the second valve 32 against the valve holder 33 while holding the valve holder. In a state where 33 is pressed against the opening 10c of the container main body 10, the outer periphery of the lower end is caulked (plastically deformed) and fixed to the neck 10g.

  A tube 40 is connected to the valve assembly 30 configured as described above as shown in FIG. 1A. The tube 40 communicates with the second valve 32 of the valve assembly 30 via a connecting member 70 described later. The tube 40 is made of a straight pipe made of metal such as stainless steel. However, it may be made of synthetic resin such as polyethylene or polypropylene as long as rigidity can be ensured. The upper end of the tube 40 is fitted and fixed to the connecting member 70. The lower end communicates with the through hole 23a of the piston joint 23 through the insertion hole 21f of the first piston 21 (see FIGS. 1A and 2). The space between the tube 40 and the insertion hole 21f is sealed by an O-ring 50 attached to the outer periphery of the tube 40. The O-ring 50 is held by a holding member 60 so that it can slide on the tube 40 in accordance with the sliding of the piston unit 20.

  The holding member 60 is cylindrical, and only the lower end side is a double cylinder. The outer end 60 a is fitted between the inner cylinder 21 b of the first piston 21 and the annular protrusion 21 g and is fixed to the first piston 21. The inner end 60b holds the O-ring 50 with the upper surface of the inner cylinder 21b.

  As shown in FIG. 3C, the connecting member 70 has a substantially disc shape, and has a cylindrical first valve connecting portion 70 a connected to the lower portion of the housing 31 a of the first valve 31 and the second valve 32 on the upper surface. A cylindrical second valve connecting portion 70b that is connected to the lower portion of the housing 31a is formed. A cylindrical tube connecting portion 70c is formed at the center of the lower surface. A passage 70d that connects the second valve connecting portion 70b and the tube connecting portion 70c is formed in the connecting member 70. In addition, the lower part of the 1st valve | bulb connection part 70a is notched, and is connecting with the 1st stock solution storage chamber 12 directly. A plug member 70e for closing the opening on the first valve connecting portion 70a side is inserted into the passage 70d.

  Next, the stock solution C and the pressure agent P accommodated in the container body 10 will be described. The stock solution C is divided into a first stock solution C1 filled in the first stock solution storage chamber 12 and a second stock solution C2 filled in the second stock solution storage chamber 13. The first stock solution C1 and the second stock solution C2 are preferably stored in a state of being separated from each other and mixed at the time of use. Specifically, a two-component hair dye comprising a first agent containing a dye that develops color by oxidation (such as paraphenylenediamine) and a second agent containing an oxidizing agent (hydrogen peroxide) that oxidizes the dye. Is mentioned.

  Examples of the pressurizing agent P include compressed gases such as nitrogen, carbon dioxide, and air, and liquefied gases such as liquefied petroleum gas, dimethyl ether, and hydrofluoroolefin. Preferred are compressed gases, and particularly solubility in water. It is preferable to use nitrogen that is small and difficult to permeate the second piston 22.

  As a method for filling the container body 10 with the first undiluted solution C1, the second undiluted solution C2, and the pressurizing agent P, first, the piston unit 20 is inserted into the container body 10 to fix the bottom lid 11, and the container body 10 is fixed. The valve assembly 30 is fixed to the opening 10c of the first, and the discharge container 1 is formed. Next, the stem 31b of the first valve 31 and the second valve 32 is pushed down, and the air in the first stock solution storage chamber 12 and the second stock solution storage chamber 13 is simultaneously sucked and the piston unit 20 is raised.

  Next, a first agent of a two-component hair dye is filled into the first stock solution storage chamber 12 as a first stock solution C1 from the stem 31b of the first valve 31, and as a second stock solution C2 from the stem 31b of the second valve 32. Fill the second stock solution storage chamber 13 with the second agent of the two-component hair dye. The first stock solution C1 and the second stock solution C2 are filled at the same time, and the piston unit 20 is moved downward. At this time, the first undiluted solution C1 is filled from a position deviated from the central axis. However, since the piston unit 20 is formed in an axial symmetry, the piston unit 20 is not deformed irregularly, and the piston unit 20 has its through-hole. Since 23a is guided by a tube (guide member) 40 provided on the central axis, it slides downward without tilting.

  Thereafter, the pressurizing agent storage chamber 14 is filled with the pressurizing agent P from the gas filling valve 11 a of the bottom lid 11. In addition, after assembling the discharge container 1, the pressurizing agent storage chamber 14 is filled with the pressurizing agent P, and then the air in the first stock solution storage chamber 12 and the second stock solution storage chamber 13 is discharged, and the first stock solution is discharged. C1 and the second stock solution C2 may be filled. In this case, the discharge container (pressurized container) filled with the pressurizing agent P can be transferred to another factory and filled with the first stock solution C1 and the second stock solution C2.

  When the pressurizing agent P is stored in the pressurizing agent storage chamber 14, the first piston 21 pressurizes the first stock solution storage chamber 12, and the second piston 22 pressurizes the second stock solution storage chamber 13. Accordingly, the first stock solution C1 and the second stock solution C2 are compressed at a pressure substantially equal to the filling pressure of the pressurizing agent P, respectively. On the other hand, the pressure in the space S of the piston joint 23 is atmospheric pressure. Accordingly, the pressure in the space S is relatively smaller than the pressure in the second stock solution storage chamber 13.

  Therefore, the gas present in the second stock solution storage chamber 13 permeates into the space S. As for the gas, for example, the air in the tube 40 or the valve assembly 30 has moved to the second stock solution storage chamber 13 side when the second stock solution is filled, between the first piston 21 or the second piston 22 and the piston joint 23. Air remaining in the gap, oxygen generated by the decomposition of hydrogen peroxide of the second agent, and the like. Gas permeation occurs until the pressure in the space S and the pressure in the second stock solution storage chamber 13 are balanced, but the gas that has permeated into the space S is absorbed by the gas absorbent 4, so that the second stock solution is contained. The formation of the gas reservoir G in the chamber 13 can be continuously suppressed over a long period of time. Even if the gas reservoir G is formed, the size thereof can be reduced or eliminated.

  When discharging the stock solution C, the two stems 31b and 31b are pushed down simultaneously. By opening the first valve 31 and the second valve 32 simultaneously, the first stock solution C1 and the second stock solution C2 can be discharged simultaneously. That is, by opening the first valve 31 and the second valve 32, the pressurizing agent P in the pressurizing agent storage chamber 14 urges the piston unit 20 upward, and the piston unit 20 moves upward in the container. By sliding in the main body 10, the first stock solution storage chamber 12 and the second stock solution storage chamber 13 are contracted, and the stock solutions C1 and C2 are discharged.

  At this time, the first stock solution C1 is supplied to the first valve 31 via the first valve connecting portion 70a (first discharge passage) of the connecting member 70, and the second stock solution C2 is supplied to the piston joint 23 and the second piston. 22, the through hole 23 a, the inside of the tube 40, and the second valve connecting portion 70 b (second discharge passage) of the connecting member 70, and is supplied to the second valve 32, and from each stem 31 b to the outside. And discharged.

  During discharge, the piston unit 20 has a first seal portion 21e and a second seal portion 22e on its outer periphery sliding inside the container body 10, and its inner periphery slides on the outer periphery of the tube 40. Since it is provided on the central axis of the piston unit 20 (container body 10), it functions as a guide member that guides the sliding of the piston unit 20 in the vertical direction, and the inclination of the piston unit 20 is suppressed. Stable sliding can be realized. When the discharge is completed, as shown in FIG. 4, substantially the entire piston unit 20 is moved to the upper tube portion 10a side.

  Although the discharge container 1 of the present invention has two stems 31b, since the contraction of the first stock solution storage chamber 12 and the second stock solution storage chamber 13 is interlocked with the piston unit 20, either one of them is used. Even if only the stem 31b is operated, it does not operate. Therefore, even if operated in an incorrect manner, only one of the stock solutions is not discharged, and the two stock solutions C1 and C2 can be reliably discharged at a predetermined ratio (area ratio of the piston that pressurizes the stock solution C). it can. In order to push the two stems 31b at the same time, it is preferable to attach a push button straddling the two stems 31b. As the push button, one that can mix and discharge the stock solutions discharged from the two stems 31b inside may be adopted.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. For example, in the above-described embodiment, air or oxygen is assumed as the gas accumulated in the second stock solution storage chamber 13, but different component gases may be generated depending on the type of the second stock solution C2. In this case, it is preferable that the piston joint 23 is appropriately changed to a material that easily allows the generated gas to pass therethrough. It is preferable that the gas absorbent 4 accommodated in the space S is appropriately changed according to the type of gas. The gas absorbent 4 is not necessarily used.

  As the stock solution C, a non-aqueous exothermic preparation containing an inorganic salt such as magnesium chloride is used as the first stock solution C1, and an agent containing water that reacts with the inorganic salt is used as the second stock solution C2. Anyway. Further, urethane foam formed by condensing and polymerizing an isocyanate and a hydroxyl group of a polyhydric alcohol with water and foaming with generated gas or a foaming agent may be used. Furthermore, a combination of a first stock solution containing a water-soluble polymer that thickens in a neutral to weakly alkaline region such as a carboxyvinyl polymer and a second stock solution containing an alkaline agent that neutralizes the water-soluble polymer, A gel that thickens by mixing and neutralizing (uses are not particularly limited, skin care, sunscreen, etc.), a first stock solution containing a polyhydric alcohol such as glycerin or diethylene glycol, and the polyhydric alcohol Combined with a second stock solution containing a small amount of water to be hydrated, mixed together and exothermic due to hydration, and two liquids such as cream and foam that can be warmed react to be discharged and mixed at the same time Two kinds of undiluted solutions used may be used.

DESCRIPTION OF SYMBOLS 1 Discharge container 2 Discharge product 3 Stock solution storage chamber 4 Gas absorbent 10 Container main body 10a Upper cylinder part 10b Lower cylinder part 10c Opening part 10d Diameter expansion step part 10e Body part 10f Shoulder part 10g Neck part 11 Bottom cover 11a Gas filling valve 11b Outside Cylinder 11c Inner cylinder 12 First undiluted solution accommodating chamber 13 Second undiluted solution accommodating chamber 14 Pressurizing agent accommodating chamber 20 Piston unit 21 First piston 21a Bottom portion 21b Inner tube 21c Disk portion 21d Outer tube 21d1 Projection 21e First seal portion 21f Insertion Hole 21g Annular protrusion 22 Upper piston 22a Upper bottom 22b Inner cylinder 22c Disk part 22d Outer cylinder 22e Second seal part 22f Upper cylinder 22g Peripheral wall 22g1 Projection 23 Piston joint 23a Through hole 23b Recessed part 23c Groove part 23d Fitting groove 23e Outer wall 24 body 24a core 24b outer cylinder 24c double structure 24d opening 25 lid 25a base 25 Insertion portion 25c Flange portion 30 Valve assembly 31 First valve 31a Housing 31b Stem 31c Stem hole 31d Stem rubber 31e Spring 31f Cover member 32 Second valve 33 Valve holder 33a Holding portion 33b Plug portion 33c Holder portion 34 Cover cap 40 Tube (guide) Element)
50 to 52 O-ring 60 Holding member 60a Outer one end 60b Inner one end 70 Connecting member 70a First valve connecting portion 70b Second valve connecting portion 70c Tube connecting portion 70d Passage 70e Plug member P Pressurizing agent C Stock solution C1 First undiluted solution C2 Second stock solution S Space G Gas reservoir t1 Thickness R of outer cylinder part

Claims (7)

A container body;
A piston unit that divides the container body into a stock solution storage chamber and a pressurizing agent storage chamber, and slides inside the container body by the pressure of the pressurizing agent stored in the pressurizing agent storage chamber to pressurize the stock solution storing chamber. When,
A valve assembly communicating with the stock solution storage chamber,
The piston unit has gas permeability on the side of the stock solution storage chamber and has a space inside thereof, and when the pressure in this space is stored in the pressurizing agent storage chamber, the stock solution is stored. Set to be less than the pressure the chamber receives,
Discharge container. The stock solution storage chamber is further divided into a first stock solution storage chamber and a second stock solution storage chamber by a piston unit,
The piston unit includes a first piston that pressurizes the first stock solution storage chamber, a second piston that pressurizes the second stock solution storage chamber, and a piston joint that connects the first piston and the second piston,
The piston joint has gas permeability and faces the second stock solution storage chamber, and has the space therein.
The discharge container according to claim 1. The piston joint has a double structure part composed of a core part and an outer cylinder part surrounding the outer periphery of the core part,
The space is formed between the core part and the outer cylinder part,
The discharge container according to claim 2. The piston joint includes a lid portion that is fitted between the core portion and the outer cylinder portion.
The discharge container according to claim 3. A gas absorbent is accommodated in the space,
The discharge container according to any one of claims 1 to 4. A discharge product containing a stock solution and a pressurizing agent in the discharge container according to claim 1,
The stock solution contains hydrogen peroxide,
Discharge product. A discharge product containing a stock solution and a pressurizing agent in the discharge container according to claim 2,
A stock solution containing hydrogen peroxide is filled in the second stock solution storage chamber,
Discharge product.

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