JP2018039544A - Valve and discharge container using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a valve capable of suppressing a discharge failure of a liquid concentrate and a discharge container using the same.SOLUTION: There is provided a valve for an inner container 20 which is shrunk by pressure of a compression agent P filled in an outer container 10 for discharging a viscous content C, and in a valve passage from a lead-out part for taking the content C in the inner container 20 to a stem hole 42a for discharging the content C to outside, there are provided: a first drawing part T1 for miniaturizing a gas G in the content C; an expansion chamber E whose width is expanded on a downstream side of the first drawing part T1, and which expands the miniaturized gas G; and a second drawing part T2 for further miniaturizing the expanded gas.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a valve attached to an inner container accommodated in an outer container and a discharge container using the same.

  In Patent Document 1, in a discharge product that shrinks an inner container with the pressure of a pressurizing agent filled in an outer container and discharges contents, an inner cylinder that houses a stem and the like, and an outer cylinder that closes an opening of the outer container It is disclosed to use a housing that is integrally molded. Such a housing has advantages such as reduction of raw materials and simplification of assembly work, but on the other hand, a space that does not shrink due to the pressure agent is formed between the inner cylinder and the outer cylinder. There is a problem that gas accumulates in the part.

  In Patent Document 2, in order to solve the problem, the lead-out portion (take-in port) for taking the contents (stock solution) into the valve is moved upward. Specifically, the lower portion of the housing having an opening at the lower end is moved. By enclosing with a cup-shaped housing cover having an opening at the upper end, a passage extending from the opening of the housing cover to the upstream opening of the housing is formed between the outer surface of the housing and the inner surface of the housing cover. The opening of the cover is made to function as a substantial stock solution intake so that the gas accumulated between the inner cylinder and the outer cylinder of the housing can be discharged. For example, the gas is discharged to the outside by operating (opening) the valve for a certain period in advance before product shipment.

JP2015-107809A JP2015-209245A

  However, the cause of gas accumulation in the inner container is that the pressure agent passes through the inner container or gas is generated from the undiluted solution itself. In the case of a viscous content such as a gel, it is not sufficient to discharge it before shipment because the gas is easily dispersed in the state of bubbles in the viscous content.

  The gas accumulated in the inner container will eventually be discharged together with the stock solution, but the passage formed between the outer surface of the housing and the inner surface of the housing cover is narrow and the flow passage area hardly changes. The flowing gas flows into the housing as a single piece (as a large lump). In addition, the gas in the inner container is compressed by the pressure of the pressurizing agent, and when passing through the stem hole, the gas moves from under pressure by the pressurizing agent to atmospheric pressure and rapidly expands. There was a problem that the discharge state of the stock solution was not stable, such as increasing the momentum in the passage and blowing off the stock solution vigorously.

  Then, this invention aims at provision of the valve | bulb which can suppress the discharge defect of stock solution, and a discharge container using the same.

  The valve of the present invention is a valve for the inner container 20 that is contracted by the pressure of the pressurizing agent P filled in the outer container 10 and discharges the viscous content C, and is a derivation that takes in the content C in the inner container 20. The first throttle part T1 for refining the gas G in the contents C and the downstream side of the first throttle part T1 in the valve passage from the part to the stem hole 42a for discharging the contents C to the outside An expansion chamber E for expanding the refined gas G and a second throttle part T2 for further miniaturizing the expanded gas G are provided.

  In such a valve, a stem 42 having the stem hole 42a, an elastic body 45 for biasing the stem 42, and a stem rubber 43 for closing the stem hole 42a are accommodated, and the contents C are supplied to the stem 42 side. A housing 41 having an opening 41i for mounting, and by attaching a passage member 46 to the housing 41, the first throttle portion T1 or the second throttle portion T2 having a smaller diameter than the opening 41i is formed. Is preferred.

  The expansion chamber E is preferably provided with a collision wall 47b facing the opening on the downstream side of the first throttle portion T1.

  Further, a cup-shaped housing cover 47 surrounding the housing 41 and the passage member 46 is provided, and a passage that extends between the housing 41 and the housing cover 47 from the opening 47 a of the housing cover 47 to the opening 41 i of the housing 41. Is formed in the passage formed by the outer surface of the housing 41 and the inner surface of the housing cover 47, the expansion chamber E is formed in the inner space of the housing cover 47, and the passage member 46 The second throttle portion T2 may be formed in the internal passage 46b.

  The first throttle portion T <b> 1 may be extended by a passage formed by the outer surface of the passage member 46 and the inner surface of the housing cover 47.

  A lower cylinder 41h extends from the bottom 41g of the housing 41, the opening 41i is formed at the tip of the lower cylinder 41h, a first throttle part T1 is formed in the internal passage 46b of the passage member 46, and the lower cylinder The expansion chamber E may be formed in the space inside 41h, and the second throttle portion T2 may be formed by a small hole 41j provided in the bottom 41g of the housing 41.

  The discharge container of the present invention includes an outer container 10 having pressure resistance, an inner container 20 that is accommodated in the outer container 10 and accommodates the contents C, and any one of the above valves.

  The valve of the present invention is a valve for an inner container that contracts by the pressure of the pressurizing agent filled in the outer container and discharges the viscous contents, and the contents are taken to the outside from the lead-out portion that takes in the contents in the inner container. A first throttle part for miniaturizing the gas in the contents in the valve passage to the discharge stem hole, an expansion chamber for expanding the refined gas by widening on the downstream side of the first throttle part, Since the second throttle part for further miniaturizing the expanded gas is provided, even if gas is mixed in the contents in the inner container, the gas is discharged at the first throttle part of the valve passage at the time of discharge. In order to reduce the degree of compression (compression ratio) by expanding the gas refined in the expansion chamber and further reducing the gas in the second throttle part, the gas exiting the stem hole is less expanded (expanded). But it is still small) The ejection failure such as skipped can be suppressed.

  A housing having a stem having the stem hole, an elastic body for urging the stem, and a stem rubber for closing the stem hole is provided, and an opening for supplying contents to the stem side is provided. If the first throttle part or the second throttle part having a smaller diameter than that of the opening is formed by attaching the passage member, the distance to the stem hole is short and the pressure is lower than that in the inner container. Since it can be miniaturized in a sufficiently expanded state (a state in which the degree of compression is lowered), the expansion of the gas after passing through the stem hole can be reduced.

  Further, if the expansion chamber is provided with a collision wall that faces the opening on the downstream side of the first throttle part, the gas that has passed through the first throttle part collides with the collision wall. This can facilitate the reduction of the compression degree. Moreover, since the flow direction changes, the flow velocity can be suppressed.

  Also, a cup-shaped housing cover surrounding the housing and the passage member is provided, and a passage extending from the opening of the housing cover to the opening of the housing is formed between the housing and the housing cover. A first throttle portion is formed in a passage formed by the inner surface of the housing, an expansion chamber is formed in a space between the bottom portion of the housing and the bottom portion of the housing cover, and a second throttle portion is formed in the internal passage of the passage member. In this case, it is easy to secure the flow path length of the first throttle part and the capacity of the expansion chamber, to easily refine the gas, and to reduce the degree of compression.

  If the first throttle portion is extended by a passage formed by the outer surface of the passage member and the inner surface of the housing cover, the flow velocity can be suppressed by the channel resistance. In addition, it is possible to form a passage that is different in thickness and shape from the passage formed by the outer surface of the housing and the inner surface of the housing cover, and it is easy to adjust the discharge state, such as making the gas finer and weakening the momentum. .

  A lower cylinder is provided at the bottom of the housing, an opening is formed at the tip of the lower cylinder, a first throttle is formed in the internal passage of the passage member, an expansion chamber is formed in the lower cylinder, and is provided at the bottom If the second throttle part is formed by the small hole formed, the valve can be formed compactly. Moreover, since the opening part is formed in the front-end | tip of a lower cylinder, gas can be stored in the part above the opening part, and discharge of gas can also be suppressed.

It is sectional drawing which shows one Embodiment of the discharge container of this invention. It is a bottom view of a housing. It is a bottom view of a housing cover. It is a bottom view of a channel member. It is sectional drawing which shows other embodiment of a discharge container. It is sectional drawing which shows other embodiment of a discharge container.

  Next, the discharge container of the present invention will be described with reference to the drawings. First, the outline of the discharge container 1 of the present invention will be described. As shown in FIG. 1, the outer container 10 having an opening 10d at the upper end and the opening 20d at the upper end are also accommodated in the outer container 10. This is a so-called double aerosol container including an inner container 20 and a valve assembly 30 that is attached to the outer container 10 and the openings 10d and 20d of the inner container 20 and communicates the inside of the inner container 20 with the outside. The discharge container 1 is characterized in that it has a mechanism for making the gas G in the inner container 20 finer and gradually discharging it while lowering the degree of compression. Therefore, this point will be described below with an emphasis on this point.

  First, the outer container 10 will be described. The outer container 10 includes a cylindrical barrel portion 10a having a closed lower end, a constricted portion 10b whose diameter is reduced above the barrel portion 10a, a rising portion 10c rising from the upper end of the constricted portion 10b, and an upper end of the rising portion 10c. And an opening 10d that opens.

  The outer container 10 is formed, for example, by forming a metal disk such as aluminum into a bottomed cylindrical shape by impact processing and squeezing and ironing, or forming a metal cup into a bottomed cylindrical shape by squeezing and ironing, and a synthetic resin coat is formed on the inner surface. Then, the upper end of the body portion 10a is necked to form the constricted portion 10b and the rising portion 10c. At least the pressure agent P is not ruptured, or the shape greatly changes. It has a pressure resistance that does not

  The inner container 20 has a cylindrical body part 20a with the lower end closed, an inclined part 20b that expands upward from the upper end of the body part 20a, and leans against the constricted part 10b of the outer container 10, and an inclined part 20b. A rising part 20c rising from the upper end of the upper part, and an opening part 20d opening at the upper end of the rising part 20c. The body portion 20a is provided with a bellows portion 20e for allowing the valve assembly 30 to be pushed after the undercup is filled.

  The inner container 20 is manufactured by blow molding a synthetic resin such as polyethylene, polypropylene, polyethylene terephthalate, nylon, and eval, and has such flexibility that it can be completely crushed by the pressure of the pressure agent P. Yes.

  The valve assembly 30 includes a valve 40 for selectively discharging / blocking the stock solution C filled in the inner container 20 to the outside, and a gasket 50 for sealing the openings 10d and 20d of the outer container 10 and the inner container 20; And a cover cap 60 for fixing the valve 40 to the outer container 10 and the inner container 20.

  The valve 40 is a housing 41, a bottomed cylindrical stem 42 that is inserted into the housing 41 so as to freely move up and down, and is positioned on the outer periphery of the stem 42 to block a stem hole 42 a provided on the side surface of the stem 42. Attached to the stem rubber 43, a disc-shaped cover body 44 that fixes the stem rubber 43 to the housing 41, an elastic body (coil spring) 45 that constantly biases the stem 42 upward, and an opening 41i at the bottom of the housing 41 And a housing cover 47 surrounding the housing 41 and the passage member 46 from the lower side.

  The housing 41 includes an outer cylinder 41b having substantially the same diameter as the opening 20d of the inner container 20 in addition to the inner cylinder 41a that supports the stem 42. The inner cylinder 41a and the outer cylinder 41b are connected by a top plate 41c straddling the upper ends of the inner cylinder 41a and the outer cylinder 41b, and a plurality of vertical ribs 41d provided radially around the inner cylinder 41a. (See FIG. 2).

  The inner cylinder 41a is substantially cylindrical, and the entire upper end side is open so that the stem 42 and the elastic body 45 can be accommodated in the cylinder from above. On the inner peripheral surface of the inner cylinder 41a, a plurality of grooves 41e are formed at equal intervals in the vertical direction, and a passage is formed between the inner cylinder 41a and the outer peripheral surface of the stem 42. In addition, a plurality of grooves 41f are formed at equal intervals in the vertical direction on the outer peripheral surface of the inner cylinder 41a (see FIG. 2), and the inner peripheral surface of the housing cover 47 attached so as to surround the lower portion of the housing 41. A passage T1a is formed between the two. A cylindrical lower cylinder 41h having a smaller diameter than the inner cylinder 41a extends from the bottom 41g of the inner cylinder 41a. The lower cylinder 41h is open at the entire lower end side. This opening functions as an upstream opening 41 i for introducing the stock solution C into the housing 41 and supplying it to the stem 42 side. The lower cylinder 41h and the inner cylinder 41a communicate with each other through a small hole 41j provided at the center of the bottom 41g of the inner cylinder 41a.

  The outer cylinder 41b is substantially cylindrical and has a lower end opened. A convex portion 41k is provided on the outer peripheral surface of the outer cylinder 41b, and the inclined portion 20b and the rising portion 20c of the inner container 20 are pushed in the radially outward direction to contact the inner surface of the outer container 10.

  The top plate 41c is formed in a staircase shape that descends toward the inner cylinder 41a in the vicinity of the upper end of the inner cylinder 41a. The number of stages is two, the lower stage 41m side is a part for mounting the stem rubber 43, and the upper stage 41n side is a part for attaching the cover body 44. Moreover, the top plate 41c extends radially outward beyond the upper end of the outer cylinder 41b to form a flange portion 41p. An annular gasket 50 is arranged at the corner formed by the lower surface of the flange portion 41p and the outer peripheral surface of the outer cylinder 41b, and abuts against the upper ends of the outer container 10 and the inner container 20 to form a seal. doing.

  The passage member 46 forms a mechanism for miniaturizing the gas (bubbles) G present in the stock solution. As shown in FIG. 1, it has a cylindrical shape having a bottom 46 a and is fitted on a lower cylinder 41 h of the housing 41. A plurality of internal passages 46b having a smaller diameter than the opening 41i of the housing 41 are formed in the bottom 46a (see FIG. 4a), and a space formed near the bottom 47b of the housing cover 47 and a lower cylinder of the housing 41 41h is communicated with. Further, a plurality of grooves 46 c are formed at equal intervals on the outer peripheral surface in the vertical direction, and a passage T <b> 1 b is formed between the outer peripheral surface and the inner peripheral surface of the housing cover 47. The passage T1b communicates with a passage T1a formed between the housing cover 47 and the housing 41, and the downstream opening portion faces the bottom portion 47b of the housing cover 47. As shown in FIG. 4b, the number of the grooves 46c may be made smaller than the grooves 41f on the outer peripheral surface of the housing. In this case, the cross-sectional area per passage T1b is smaller than the cross-sectional area per passage T1a. However, by making the total cross-sectional area of the passage T1b equal to the total cross-sectional area of the passage T1a, the cross-sectional area is reduced in the passage T1a. The formed bubbles are more easily miniaturized without being compressed in the passage T1b. Further, the lower portion of the passage T1a may be branched so that the passages T1a and T1b having different numbers and positions communicate with each other.

  The housing cover 47 has a cylindrical shape (so-called cup shape) having an opening 47 a at the upper end and a bottom 47 b at the lower end, and the inner diameter thereof is substantially the same as the outer diameter of the inner cylinder 41 a of the housing 41 and the passage member 46. It is said that. The upper portion of the housing cover 47 increases in diameter as it goes upward. A slit 47d is formed in the enlarged diameter portion 47c corresponding to the vertical rib 41d of the housing 41 (see FIG. 3). The slit 47d is formed to be shorter than the vertical length of the vertical rib 41d. When the housing cover 47 is externally fitted to the inner cylinder 41a of the housing 41, the upper end of the housing cover 47 and the top plate 41c of the housing 41 are formed. An opening is formed between the lower surface and the lower surface. This opening serves as a lead-out portion (take-in port) for taking the contents C in the inner container 20 into the valve 40. Further, the valve passage refers to a passage from the opening to the stem hole 42a.

  The discharge container 1 configured as described above is filled with the pressurizing agent P between the outer container 10 and the inner container 20, the inner container 20 is filled with the stock solution C, and a discharge member (not shown) is provided on the stem 42. By being attached, the inner container 20 is contracted by the pressure of the pressurizing agent P, and a discharge product (aerosol product) that discharges the stock solution (contents) C from the valve 40 is manufactured.

  As the pressurizing agent P, for example, a compressed gas such as nitrogen, compressed air, carbon dioxide, nitrous oxide is filled. The pressure after filling is, for example, 0.4 to 1.0 MPa at 25 ° C. The pressurizing agent P is filled in a state where the housing 41 is slightly lifted from the opening 10d of the outer container 10 (that is, under cup filling). After filling with the pressurizing agent, the housing 41 is pushed down so that the gaskets 50 are in close contact with the upper ends of the outer container 10 and the inner container 20, respectively, and the lower end of the cover cap 60 is crimped so as to be along the constricted portion 10b. 10 is fixed.

  The stock solution C can be filled with a stock solution (viscous content) having a viscosity of 1000 to 100,000 (MPa · s) such as cream, paste, or gel. Possible uses include various products such as hair products such as two-component hair dyes and skin products such as two-component exothermic preparations (cleansing and shaving agents).

  By operating a push button (discharge member) attached to the stem 42, the discharge product can open the stem hole 42 a closed by the stem rubber 43 and discharge the contents C. At this time, the content C is a passage formed by the inner peripheral surface of the housing cover 47 and the groove 41 f on the outer peripheral surface side of the housing 41 from the opening 47 a (the leading portion of the content C) at the upper end of the housing cover 47. T1a, a space formed between the inner circumferential surface of the housing cover 47 and the groove 46c on the outer circumferential surface side of the passage member 46, and the space between the inner surface of the housing cover 47 and the lower surface of the passage member 46 (the bottom of the housing cover 47). 47b, the inner passage 46b of the passage member 46, the lower cylinder 41h of the housing 41, the small hole 41j of the bottom 41g of the housing 41, the groove 41e on the inner peripheral surface side of the housing 41 and the outer peripheral surface of the stem 42. , The stem hole 42a, the passage in the stem, and the discharge passage of the discharge member are discharged to the outside, but if the gas G is contained in the contents, the gas G is A passage T1a formed by the inner peripheral surface of the hooding cover 47 and the groove 41f on the outer peripheral surface side of the housing 41, or a passage formed by the inner peripheral surface of the housing cover 47 and the groove 46c on the outer peripheral surface side of the passage member 46 Refined by T1b. When the gas G that has been refined flows from the narrow passage into the space E that is rapidly widened, the gas G is released from the passage resistance received from the narrow passage and expands. Further, since the space E is in a decompressed state as compared with the inside of the inner container 20 due to the opening of the stem hole 42a, the gas G expands further and the degree of compression decreases. Moreover, the momentum is reduced by colliding with the bottom 47b of the housing cover 47. Further, the contents C and the gas G that have flowed downward change the flow direction upward. The expanded bubbles in the space E become larger, but are refined again by the internal passage 46b of the passage member 46.

  As described above, the first throttle portion (the inner peripheral surface of the housing cover 47) for refining the gas G mixed in the contents C in the passage for sending the contents C from the stock solution storage chamber of the inner container 20 into the housing 41. And the passage T1a formed by the groove 41f on the outer peripheral surface side of the housing 41, the passage T1b) T1 formed by the inner peripheral surface of the housing cover 47 and the groove 46c on the outer peripheral surface side of the passage member 46, and the first A collision wall (bottom 47b of the housing cover 47) that faces the opening on the downstream side of the throttle portion T1, and an expansion chamber (housing cover) that expands the gas G that is widened and refined on the downstream side of the first throttle portion T1. And a second throttle part (an internal passage 46b of the passage member 46) T2 for further miniaturizing the expanded gas G. , Mixed in contents C The air bubbles G are not discharged in a large lump, and moreover, the air bubbles G have a reduced compressibility, so that they do not expand greatly even if they pass through the stem hole 42a and come out under atmospheric pressure. The stable discharge state can be maintained without blowing the stock solution C vigorously.

Although not particularly limited, for example, the opening size of the first throttle part T1 is 0.2 to ² mm (flow path area 0.03 to ³ mm ² ), the length is 3 to 15 mm, and the second throttle part T2 0.1 to 0.5 mm (flow path area 0.005 to 0.2 mm ² ), length 0.5 to 5 mm, expansion chamber E diameter 7 to 12 mm, volume 100 to 2000 mm ³ The distance from the downstream opening of the first throttle portion T1 to the collision wall is preferably 2 to 20 mm.

  FIG. 5 shows another discharge container 1A. The valve 40A of the discharge container 1A is different from the valve 40 in that the passage member 46A has a substantially cylindrical shape and is inserted into the lower cylinder 41h of the housing 41. Thus, by inserting the passage member 46A into the lower cylinder 41h of the housing 41, it becomes easy to secure the volume of the expansion chamber E. Therefore, the gas G is easily expanded in the expansion chamber E, and the degree of compression is easily decreased. In addition, since it is the same as that of the said discharge container 1 about another structure, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  FIG. 6 shows still another discharge container 1B. The valve 40B of the discharge container 1B is different from the valve 40A in that the housing cover 47 is not provided. In this case, the first throttle portion T1 is formed by the internal passage 46b of the passage member 46A, and the expansion chamber E is defined by the upper end surface of the passage member 46A, the lower surface of the bottom 41g of the housing 41, and the inner peripheral surface of the lower cylinder 41h. The second throttle part T2 is formed by a small hole 41j provided in the bottom part 41g of the housing 41, and is formed by an enclosed space (inner space of the lower cylinder 41h). Since the valve 40B can be made compact, it can be used for various containers. In this embodiment, since the lead-out portion that takes in the contents serves as the internal passage 46b of the passage member 46A, the gas G is formed in the space between the inner cylinder 41a and the outer cylinder 41b of the housing 41 that is not deformed by compression with the pressurizing agent P. Can be stored without discharging. In addition, since it is the same as that of the said discharge container 1A about another structure, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As mentioned above, although typical embodiment of this invention was described, this invention is not limited to the said embodiment, It can be implemented in various changes within the scope of this invention. For example, in the embodiment shown in FIGS. 1 to 4, the first throttle portion is constituted by the outer peripheral surface of the housing 41 and the grooves 41 f and 46 c on the outer peripheral surface of the passage member 46 and the inner peripheral surface of the housing cover 47. However, you may comprise by providing a groove | channel in the housing cover 47 side. Moreover, you may make it comprise with an internal channel | path. Further, the groove 41f on the outer peripheral surface side of the housing 41 and the groove 46c on the outer peripheral surface side of the passage member 46 are arranged in a straight line, but by deliberately shifting one of them (for example, rotating the passage member 46 about its axis), While maintaining the communication state of the passage T1a and the passage T1b, the flow passage area and the passage shape may be changed. Thus, if a change is given to a channel | path (1st aperture | diaphragm | squeeze part T1), a discharge state can be adjusted, such as making gas finer or weakening a momentum. Furthermore, the cylindrical part 46d of the passage member 46 may be shortened in the vertical direction, and a space may be provided between the two without making the upper end abut against the lower surface of the bottom part 41g of the housing. In this case, since the passage T1a functions as the first constriction T1, the space functions as the first expansion chamber, and the passage T1b functions as the second constriction T2, the effect of bubble miniaturization-expansion-miniaturization is obtained. The degree of compression can be lowered and refined. In addition, a second expansion chamber is formed in a space between the inner surface of the housing cover 47 and the lower surface of the passage member 46, a third throttle portion is formed by the internal passage 46b of the passage member 46, and the upper end surface of the passage member 46A. A third expansion chamber is formed in a space surrounded by the lower surface of the bottom 41g of the housing 41 and the inner peripheral surface of the lower cylinder 41h, and a fourth throttle portion is formed by a small hole 41j of the housing 41. If the expansion chambers are provided and the throttle portions are provided on the upstream side and the downstream side of each expansion chamber (that is, if the bubble miniaturization mechanism is multiplexed), the bubbles can be further miniaturized.

1, 1A, 1B ··· discharge container 10 · · outer container 10a · · barrel portion 10b · · constricted portion 10c · · rise portion 20 · · inner container 20a · · barrel portion 20b · · inclined portion 20c · · Standing portion 20d · · Opening portion 20e · · Bellows portion 30 · · valve assembly 40, 40A, 40B · · valve 41 · · housing 41a · · inner cylinder 41b · · outer cylinder 41c · · top plate 41d · · vertical Rib 41e... Groove 41f on the inner peripheral surface side... Groove 41g on the outer peripheral surface side... Bottom 41h... Lower cylinder 41i ... opening 41j ... small hole 41k ... convex part 41m ... step (lower)
41n ... Step (upper)
41p · · flange portion 42 · · stem 42a · · stem hole 43 · · stem rubber 44 · · cover body 45 · · elastic body 46, 46A · · passage member 46a · · bottom portion 46b · · internal passage 46c · · outer peripheral surface Groove 46d ·· tube portion 47 · · housing cover 47a · · opening portion 47b · · bottom portion 47c · · enlarged diameter portion 47d · · slit 50 · · gasket 60 · · cover cap C · · stock solution P · · pressurizing agent T1 ··· First throttle portion T1a ··· A passage T1b formed by the inner peripheral surface of the housing cover and a groove on the outer peripheral surface side of the housing · · · An inner peripheral surface of the housing cover and a groove on the outer peripheral surface side of the passage member Formed passage T2 ・ ・ Second throttle E ・ ・ Expansion chamber G ・ ・ Gas (bubble)

Claims (7)

A valve for an inner container that contracts with the pressure of a pressurizing agent filled in an outer container and discharges a viscous content,
In the valve passage from the outlet part that takes in the contents in the inner container to the stem hole that discharges the contents to the outside,
A first throttle for miniaturizing the gas in the contents;
An expansion chamber that expands the gas on the downstream side of the first throttle and expands the refined gas;
The valve | bulb characterized by including the 2nd aperture | diaphragm | squeeze part for further refine | miniaturizing the expanded gas. A housing having a stem having the stem hole, an elastic body for urging the stem, and a stem rubber for closing the stem hole, and having an opening for supplying contents to the stem side;
The valve according to claim 1, wherein a first throttle part or a second throttle part having a smaller diameter than the opening is formed by attaching a passage member to the housing. The valve according to claim 2, wherein the expansion chamber is provided with a collision wall facing the opening on the downstream side of the first throttle portion. A cup-shaped housing cover surrounding the housing and the passage member;
Between the housing and the housing cover, a passage extending from the opening of the housing cover to the opening of the housing is formed,
A first throttle portion is formed by a passage formed by the outer surface of the housing and the inner surface of the housing cover;
An expansion chamber is formed in the inner space of the housing cover,
The valve according to claim 2 or 3, wherein a second throttle portion is formed in an internal passage of the passage member. The valve according to claim 4, wherein the first throttle portion is extended by a passage formed by an outer surface of the passage member and an inner surface of the housing cover. A lower cylinder extends from the bottom of the housing, and the opening is formed at the tip of the lower cylinder,
A first throttle is formed in the internal passage of the passage member;
An expansion chamber is formed in the inner space of the lower cylinder,
The valve according to claim 2, wherein the second throttle portion is formed by a small hole provided in a bottom portion of the housing. An outer container having pressure resistance;
An inner container that is contained in the outer container and contains viscous contents;
A discharge container comprising the valve according to claim 1.

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