JP7633665B2 - Discharge Products - Google Patents

Description

The present invention relates to a dispenser product that creates three-dimensional, decorative bubbles.

Patent Document 1 discloses an aerosol product that produces a soft-serve ice cream-like foam by attaching a discharge nozzle capable of discharging the foamable contents in a spiral shape to an aerosol container filled with the foamable contents.

JP 2019-59497 A

The aerosol container in Patent Document 1 is equipped with a valve, and the foamable contents can be discharged by operating this valve. The valve is a so-called aerosol valve equipped with a stem and a stem rubber that closes the stem hole of the stem, and the stem is pushed in and the stem rubber is deflected to open the stem hole and discharge the foamable contents.

However, with valves using the above mechanism, the time it takes for the stem hole to fully open varies depending on how fast the stem is pressed, so the amount dispensed per unit time until pressing is complete is not stable. In particular, when carbon dioxide gas is added to improve foam quality, instability increases due to a large difference in the internal pressure of the aerosol container between the first use and after multiple uses, making it difficult to consistently obtain the desired foam shape.

The objective of the present invention is to provide a dispensing product that can stably produce foam of the desired shape.

The discharge product of the present invention comprises a valved discharge container 2 filled with a foamable composition C and divided into a liquid phase and a gas phase, and a discharge member 3 attached to the valve 5. The valve 5 comprises an introduction hole (7d or 11a) for introducing the liquid phase L of the foamable composition C into the valve 5, a stem 6, and a stem rubber 9 for opening and closing the stem hole 6a of the stem 6. The discharge member 3 comprises a discharge nozzle 15 communicating with the stem 6. The discharge nozzle 15 comprises an internal passage 15a extending in the axial direction of the discharge nozzle 15 and an opening 15b opening to the side of the internal passage 15a. The valve 5 further comprises an upstream passage T1 from the introduction hole (7d or 11a) to the stem hole 6a, which communicates with the liquid phase but not with the gas phase, and a downstream passage T2 from the stem hole 6a to the outside of the stem 6. The upstream passage T1 is rate-limiting for the amount of foamable composition C discharged per unit time.

In the above-mentioned discharge product 1, it is preferable that the valve 5 further comprises a housing 7 that accommodates the stem 6 and a tube 11 attached to the housing 7, the upstream passage T1 passes through the housing 7 and the tube 11, and the introduction hole 7d provided in the housing 7 and/or the tube 11 are rate-limiting. It is also preferable that the ratio (A1/A2) of the flow path area (A1) of the introduction hole 7d of the housing 7 to the flow path area (A2) of the stem hole 6a is 0.35 to 2. It is also preferable that the ratio (Tl/Td) of the passage length (Tl) of the tube to the inner diameter (Td) of the tube is 20 to 150. It is also preferable that the foamable composition C is pressurized by compressed gas in the discharge container 2.

In the discharge product of the present invention, the upstream passage, which is the passage upstream of the stem hole, determines the rate of discharge of the foamable composition per unit time, so even if the speed at which the stem is pressed varies, the effect on the discharge amount per unit time is small, and as a result, foam of the desired shape can be stably obtained.

When the valve further comprises a housing that accommodates the stem and a tube attached to the housing, the upstream passage passes through the housing and the tube, and the introduction hole and/or the tube provided in the housing are rate-limiting, it is easy to achieve rate-limiting upstream of the stem hole.

When the ratio (A1/A2) of the flow path area (A1) of the inlet hole of the housing to the flow path area (A2) of the stem hole is 0.35 to 2, the inlet hole of the housing is likely to become the rate limiting factor.
When the ratio (Tl/Td) of the tube passage length (Tl) to the tube inner diameter (Td) is 20 to 150, it is easy to control the discharge amount with the tube.

When filled with compressed gas, unlike when filled with liquefied gas only, the internal pressure gradually decreases as it is discharged, causing the amount discharged per unit time to change. However, with the discharge product of the present invention, even when pressurized by compressed gas, the amount of change can be kept small, resulting in a stable production of foam of the desired shape.

FIG. 2 is a cross-sectional view showing a discharge product. FIG. 2A is a front view of the discharge nozzle, and FIG. 2B is a plan view. FIG. 4 is a cross-sectional view showing an operating state of the valve. FIG. 4A is a vertical cross-sectional view showing a discharge member equipped with another discharge nozzle, FIG. 4B is a front view of the other discharge nozzle, and FIG. 4C is a horizontal cross-sectional view thereof.

The discharge product 1 in FIG. 1 comprises a discharge container 2 and a discharge member 3 attached to the discharge container 2. The discharge container 2 is filled with a foamable composition C, and the interior of the discharge container 2 is divided into a liquid phase L and a gas phase G. The foamable composition C is composed of a concentrate and a liquefied gas, the liquid phase L is composed of a concentrate and a liquefied gas (liquid), and the gas phase is composed of the vaporized gas of the liquefied gas. When a compressed gas is filled, a portion of it dissolves in the liquid phase of the foamable composition, and the remainder exists in the gas phase together with the vaporized gas of the liquefied gas.

The discharge container 2 is a conventionally known device that includes a container body 4 and a valve 5 attached to the container body 4.

The container body 4 is made of a metal such as aluminum, and has a bottom 4a, a body 4b that rises from the outer periphery of the bottom 4a, a shoulder 4c that extends upward from the upper end of the body 4b while gradually reducing in diameter, and an opening 4d provided at the upper end of the shoulder 4c. A bead 4e is provided around the opening.

The valve 5 is a so-called aerosol valve, which includes a cylindrical stem 6 with a stem hole 6a on the side, a housing 7 that accommodates the stem 6 so that it can move up and down, an elastic body (spring) 8 that constantly urges the stem 6 upward, a roughly doughnut-shaped stem rubber 9 that closes the stem hole 6a with its inner surface when the stem 6 is urged upward and flexes on its inner side to open the stem hole 6a when the stem 6 is pressed downward, a mounting cup 10 that fixes the housing 7 to the container body 4, and a tube 11 attached to the housing 7. This valve 5 closes the opening 4d of the container body 4 by crimping the outer edge of the mounting cup 10 to the bead portion 4e of the container body 4.

The housing 7 has a bottomed cylindrical storage section 7a that stores the stem 6 and the spring 8, and a generally cylindrical tube connection section 7b that extends downward from the bottom 7c of the storage section 7a. The bottom 7c of the storage section 7a is provided with an introduction hole 7d that connects the storage section 7a to the tube connection section 7b. The lower end of the tube connection section 7b is open, and the upper opening of the storage section 7a is closed by the stem rubber 9 and the stem 6.

The upper end of the tube 11 is connected to the tube connection portion 7b of the housing 7, and the lower end opens in the liquid phase L of the foamable composition C. Therefore, the liquid phase L of the foamable composition C is introduced from the tube 11 into the valve 5, and is discharged outside the discharge container 2 through the housing 7 and the stem 6. Specifically, the foamable composition C enters the tube 11 from the introduction hole 11a that opens at the lower end of the tube, enters the storage portion 7a through the introduction hole 7d of the housing 7, enters the stem 6 through the stem hole 6a, and is then discharged into the discharge member 3 outside the discharge container 2.

The tube 11 is not open in the gas phase G but only in the liquid phase L, and the housing 7 is also not open in the gas phase G but only communicates with the tube 11. Therefore, if the section from the inlet 11a of the tube 11 to the stem hole 6a (excluding the stem hole 6a) is the upstream passage T1, and the section from the stem hole 6a to the outside of the stem 6 is the downstream passage T2, the upstream passage T1 is not connected to the gas phase G, and liquefied gas or compressed gas does not enter the tube 11 or the housing 7, but the liquid phase L of the foamable composition C or the compressed gas dissolved in the liquid phase L flows. In addition, since the stem 6 is not open in the gas phase G but only communicates with the housing 7, the downstream passage T2 is also not connected to the gas phase G, and liquefied gas or compressed gas does not enter the stem 6, but the liquid phase L of the foamable composition C or the compressed gas dissolved in the liquid phase L flows.

The upstream passage T1 is the rate-limiting (narrow passage) of the discharge amount of the foamable composition C per unit time. That is, the maximum discharge amount per unit time is determined by the upstream passage T1, and only up to that maximum amount flows through the downstream passage T2. In order to make the upstream passage T1 the rate-limiting, the ratio (A1/A2) of the flow area A1 of the inlet hole 7d of the housing 7 to the flow area A2 of the stem hole 6a is set to 0.35 to 2. For example, when one stem hole 6a and one inlet hole 7d of the housing 7 are provided, when the diameter of the stem hole 6a is 0.4 mm, it is preferable that the diameter of the inlet hole 7d of the housing 7 is 0.3 to 0.5 mm. In particular, when A1/A2 is 0.5 to 1.0, the rate-limiting control is easily performed by the inlet hole 7d of the housing, and a stable discharge state is easily obtained even when the pressure fluctuates depending on the remaining amount of the foamable composition. On the other hand, if A1/A2 exceeds 2, i.e., if the flow area A1 of the inlet hole 7d of the housing 7 is large relative to the flow area A2 of the stem hole 6a, the stem hole 6a tends to become the rate limiting factor, making it difficult to stably mold the foam into the desired shape.

If the passage length is long, the flow resistance will increase and this may affect the discharge volume. However, since the passage length (thickness (l) of the part where the hole is provided) of the inlet hole 7d of the housing 7 and the stem hole 6a is short at around 0.5 to 1 mm, and the ratio (l/d) of the passage length (l) to the diameter (d) of the inlet hole 7d of the housing 7 and the stem hole 6a is 1 to 3, this effect can be almost ignored.

On the other hand, the passage length of the tube 11 is sufficiently long relative to the inner diameter, so the effect of the flow resistance on the discharge amount is large. Therefore, instead of making the introduction hole 7d of the housing 7 the rate-limiting factor, the tube 11 may be made the rate-limiting factor. For example, the inner diameter of the tube 11 is set to 0.5 to 3.5 mm, and the ratio (Tl/Td) of the passage length (axial length (Tl) of the tube 11) to the inner diameter (Td) of the tube 11 is set to 20 to 150. It is preferably 50 to 150. In particular, when Tl/Td is 100 to 150, the tube is likely to be the rate-limiting factor, and the discharge amount is approximately the same even if the size of the introduction hole 7d of the housing is changed. For example, when the inner diameter of the tube 11 is set to 0.8 mm and the axial length of the tube is set to 85 mm, the tube becomes the rate-limiting factor, and a stable discharge state is likely to be obtained even if the pressure fluctuates depending on the remaining amount of the foamable composition. The flow path area of the tube 11 is the same from the beginning to the end. The flow area of the tube 11 does not necessarily have to be smaller than the flow area of the stem hole 6a. In addition, both the introduction hole 7d of the housing 7 and the tube 11 may be rate-limiting.

The foamable composition C is composed of a concentrate and a liquefied gas. The concentrate preferably contains a surfactant such as a fatty acid soap or an amino acid soap, monosaccharides, polyhydric alcohols, etc., because it has excellent foam formability and shape retention, and is easy to form the foam into the desired shape. Examples of the active ingredient of the foamable composition C include skin care agents such as hand disinfectants, hand washing soaps, facial cleansers, cleaning agents, bath additives, moisturizers, sunscreens, cleansing agents, lotions, shaving agents, depilatories, antiperspirants, and pest repellents, hair care agents such as treatment agents, styling agents, and hair dyes, and other personal care products; household products such as deodorants, fragrances, insect repellents, and disinfectants; and foods such as whipped cream.

The liquefied gas is liquefied in the discharge container 2, and the liquid forms the liquid phase L together with the raw liquid, while the gas (vaporized gas) forms the gas phase G. The vaporized gas increases the pressure inside the discharge container 2 to facilitate discharge to the outside, and when the liquefied gas in the liquid phase is discharged to the outside, it vaporizes and increases in volume, foaming the raw liquid. Examples of the liquefied gas include aliphatic hydrocarbons having 3 to 5 carbon atoms, such as propane, butane, and pentane, hydrofluoroolefins, dimethyl ether, and mixtures thereof. In addition, compressed gas may be filled (added) to harden the foam and make it easier to form the foam discharged from the opening 15b of the discharge nozzle 15 described later into a desired shape. Examples of the compressed gas include carbon dioxide gas, nitrogen, and compressed air. When the compressed gas is filled, the pressure inside the discharge container is preferably 0.3 to 0.7 MPa at 25°C, and more preferably 0.4 to 0.6 MPa.

The discharge member 3 includes a substantially cylindrical shoulder cover 12 that is attached to the discharge container 2, an operating part 14 that is connected to the shoulder cover 12 via a hinge part 13, and a discharge nozzle 15 that is attached to the operating part 14.

The operating unit 14 includes an attachment part 14a that is attached to the stem 6, an operating surface 14b that is located on the opposite side of the hinge part 13 from the attachment part 14a, and a nozzle base 14c for attaching the discharge nozzle 15. The attachment part 14a and the nozzle base 14c are in communication with each other, so that the foamable composition C discharged from the discharge container 2 can be supplied into the discharge nozzle 15.

The discharge nozzle 15 is roughly bullet-shaped and pointed toward the tip, and has an internal passage 15a extending in the axial direction and an opening 15b that opens to the side of the internal passage 15a. The lower end of the internal passage 15a is connected to the nozzle base 14c. Meanwhile, the upper end of the internal passage 15a is closed by a closing portion 15c.

The openings 15b are slit-shaped and long in the axial direction (vertical direction) of the discharge nozzle 15, and as shown in FIG. 2B, multiple openings (four openings) are provided at equal intervals around the axis of the discharge nozzle 15. The inner circumferential surface of the opening 15b is composed of a pair of left and right side surfaces 15d, 15e whose upper ends are connected to each other, and a bottom surface 15f that connects the bottom ends of the side surfaces 15d, 15e (see FIG. 2A).

The pair of side surfaces 15d, 15e form an arc in the horizontal direction from the internal passage 15a toward the outside. This state can also be said to be such that each side surface 15d, 15e is curved around the axis of the discharge nozzle 15. The arcs formed by these side surfaces are curved in the same direction. The side surfaces 15d, 15e of the four openings 15b are all curved in the same direction. The distance between the pair of side surfaces 15d, 15e widens outward.

The bottom surface is formed at an elevation angle with respect to the horizontal plane as shown in FIG. 1. The outlet of opening 15b is also inclined, with an angle of inclination of 60 to 85 degrees with respect to the horizontal plane. Therefore, it can be said that opening 15b also opens at an elevation angle.

The material of the discharge member 3 is, for example, a synthetic resin such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), nylon (NY) or polyacetal (POM). However, it may also be made of a metal such as aluminum.

The discharge product 1 having the above configuration can discharge the foamable composition C to the outside by pressing down the operation surface 14b of the discharge member 3. Specifically, when the operation surface 14b is pressed down, as shown in FIG. 3, the stem 6 is pressed down and the stem rubber 9 is bent, and the blockage of the stem hole 6a by the stem rubber 9 is released. Then, due to the pressure of the liquefied gas, the foamable composition C enters the tube 11 from the introduction hole 11a of the tube 11 through the tube 11, the introduction hole 7d of the housing 7, and the housing 7, as shown by the arrow in FIG. 3, enters the stem hole 6a, and further flows from the stem hole 6a through the stem 6 to the discharge member 3, and is discharged to the outside from the opening 15b of the discharge nozzle 15. After being discharged from the discharge container 2, the foamable composition C foams in the internal passage 15a and opening 15b of the discharge member 3 and changes into foam. Because the sides 15d and 15e that make up the opening 15b of the discharge nozzle 15 are curved around the axis of the discharge nozzle 15, the foam swirls around the outer periphery of the discharge nozzle 15, producing a soft-serve or swirl-like foam.

The soft serve or swirled foam is formed by the foam discharged later pushing up the foam discharged earlier. Therefore, if the amount of foam discharged per unit time is not stable, the left and right balance will be lost and the shape will not be beautiful. In particular, when the internal pressure is high at the beginning of use, the amount of foam discharged per unit time tends to change significantly depending on the speed at which the stem 6 is pushed. However, since the upstream passage T1 upstream of the stem hole 6a is the rate limiting factor in the discharge product 1 of the present invention, the effect of the speed at which the stem 6 is pushed can be reduced, and as a result, foam of the desired shape can be obtained stably. In other words, even if the stem hole 6a is made the rate limiting factor, there is an uncertain factor that the opening degree of the stem hole 6a depends on the degree of bending of the stem rubber 9, but in the case of the introduction hole 7d of the housing 7 and the tube 11, there is no such uncertain factor, so the desired amount of foam can be reliably discharged.

Figure 4 shows another discharge nozzle 15A. As shown in Figure 4A, this discharge nozzle 15A has an internal passage 15a extending in the axial direction of the discharge nozzle 15A, a closing portion 15c that closes the tip of the internal passage 15a, and an opening 15b that opens to the side of the internal passage 15a. The opening 15b is a long slit in the axial direction (vertical direction) of the discharge nozzle 15A, and extends to a part of the closing portion 15c. Therefore, the inner peripheral surface of the opening 15b is composed of a bottom edge portion 15g on the base end side of the discharge nozzle 15A, left and right side edges 15h that extend from the bottom edge portion 15g to the tip surface of the discharge nozzle 15A, and a cutout surface 15i of the closing portion 15c (see Figure 4B).

The width of the opening 15b increases toward the tip of the discharge nozzle 15A. However, the width may remain constant. The cross-sectional shape of the flow passage of the opening 15b is generally trapezoidal. However, it may also be generally V-shaped. As shown in FIG. 4C, six openings 15b are formed at equal intervals around the circumference of the discharge nozzle 15A. However, the number can be changed as appropriate, for example, 3 to 10, and preferably 4 to 8. The outer diameter of the discharge nozzle 15A is the same in the axial direction. In other words, there is no change in the outer diameter in the axial direction.

The foamable composition C flowing through the internal passage 15a basically collides with the closing portion 15c, changes direction, and is discharged to the outside from the opening 15b. However, the opening 15b reaches the closing portion 15c, and the outer periphery of the closing portion 15c is cut out. Therefore, a part of the foamable composition C is discharged to the outside from the tip of the discharge nozzle 15A without colliding with the closing portion 15c. This state can also be said to be a collision avoidance portion provided in the closing portion 15c. It can also be said that the opening 15b is open at the side and tip of the discharge nozzle 15A.

In the discharge nozzle 15A configured as above, the foamable composition C flows through the internal passage 15a, and most of it collides with the closing portion 15c, slowing down the flow rate and changing the direction of the flow, and is discharged from the opening 15b to the side and diagonally upward. Because the opening 15b is slit-shaped, the discharged foamable composition (or foam) C is initially formed into a plate shape. However, due to the influence of gravity and the pressure of the bubbles being discharged one after another from behind, it curves irregularly. In addition, because multiple openings 15b are provided, bubbles with a decorative flower shape are formed on the outer periphery of the discharge nozzle 15A as a whole. The flower shape is carnation, cockscomb, etc., and because the upstream passage T1 is the rate-limiting factor, anyone can make beautifully shaped bubbles.

Other components are similar to those of the discharge nozzle 15 in FIG. 1, so they are given the same reference numerals and detailed descriptions are omitted.

Next, we will explain the examples.

Example 1
The concentrate in Table 1 was filled at 95% by mass into an aluminum container body (body outer diameter φ35, height 110 mm). Valve 1 shown in Table 2 was attached to the bead part of the container body, and liquefied gas (liquefied petroleum gas) was filled at 5% by mass from the stem. Carbon dioxide gas was further filled from the stem and saturated and dissolved in the liquid phase of the foamable composition, and the pressure inside the discharge container was about 0.5 MPa (25°C). The discharge member shown in Figure 1 was attached to the container body, and a discharge product was produced.

Table 1 Stock solution

Example 2
A discharge product was produced in the same manner as in Example 1, except that Valve 2 shown in Table 2 was used instead of Valve 1.

Example 3
A discharge product was produced in the same manner as in Example 1, except that Valve 3 shown in Table 2 was used instead of Valve 1.

Comparative Example 1
A discharge product was produced in the same manner as in Example 1, except that Valve 4 shown in Table 2 was used instead of Valve 1.

Comparative Example 2
A discharge product was produced in the same manner as in Example 1, except that Valve 5 shown in Table 2 was used instead of Valve 1.

（φの単位はｍｍ） Table 2 Valves

(φ is in mm)

Test item 1. Pressure The discharge product was immersed in a thermostatic water bath at 25° C. for 1 hour to adjust the temperature of the foamable composition to 25° C., and the pressure (MPa, gauge pressure) inside the discharge container was measured.

2. Discharge Amount The discharged product was immersed in a thermostatic water bath at 25° C. for 1 hour to adjust the temperature of the foamable composition to 25° C., and the discharge amount (g/10 seconds) for 10 seconds was measured.

3. State of foam The discharged product was immersed in a thermostatic water bath at 25° C. for 1 hour to adjust the temperature of the foamable composition to 25° C. Discharge was performed three times by arbitrarily changing the way the operating part of the discharge member was pressed, and the state of the foam (foam) was evaluated for each remaining amount of the foamable composition.
A: Beautiful swirling bubbles were formed all three times.
×: The foam dripped from the discharge nozzle, and in some cases, a neat swirling foam could not be formed.

Table 3 Test results

In Examples 1 to 3, it was possible to stably mold a spiral-shaped bubble regardless of the remaining amount and pressure. On the other hand, in Comparative Examples 1 and 2, it was not possible to stably form a spiral-shaped bubble. In Examples 1 and 2, A1/A2 is in the range of 0.35 to 2, Tl/Td is in the range of 100 to 150, and the discharge amount is almost the same even though the diameter of the housing introduction hole is different, so it is clear that the tube is the rate-limiting factor of the discharge amount. In Example 3, A1/A2 is in the range of 0.35 to 2, Tl/Td is in the range of 20 to 100, and the discharge amount is greater than Example 1, which has the same diameter of the housing introduction hole, and the discharge amount is less than Comparative Examples 1 and 2, which have the same tube, so it is clear that the housing introduction hole is the rate-limiting factor. In Comparative Examples 1 and 2, A1/A2 is greater than 2, and the discharge amount is almost the same even though the diameter of the housing introduction hole is different, so it is clear that the stem hole is the rate-limiting factor.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, the description has been given on the assumption that the flow path shape of the tube 11 is circular, but the flow path shape may be other than a circle, such as an ellipse or a polygon. In this case, Td is not the inner dimension of the tube, but the diameter when replaced with a circle with the same area. A throttle that restricts the discharge amount per unit time may be further provided downstream of the stem hole 6a. In addition, the housing 7 and the tube 11 may be provided integrally, or the tube itself may be omitted. When the tube 11 is omitted, the upstream passage T1 is from the introduction hole 7d of the housing 7 to the stem hole 6a. The shoulder cover 12 does not necessarily need to be provided, and in that case, the operating unit 14 may be fixed to the stem 6. As the valve 5, in addition to one that discharges by pushing down the stem 6, one that discharges by tilting the stem 6 may be used. The material of the container body 4 may be a synthetic resin such as polyethylene terephthalate in addition to metal.

1 Discharge product 2 Discharge container 3 Discharge member 4 Container body 4a Bottom 4b Body 4c Shoulder 4d Opening 4e Bead 5 Valve 6 Stem 6a Stem hole 7 Housing 7a Storage section 7b Tube connection section 7c Bottom 7d Introduction hole 8 Elastic body 9 Stem rubber 10 Mounting cup 11 Tube 11a Introduction hole 12 Shoulder cover 13 Hinge section 14 Operation section 14a Mounting section 14b Operation surface 14c Nozzle base 15, 15A Discharge nozzle 15a Internal passage 15b Opening 15c Closing section 15d Side 15e Side 15f Lower surface 15g Bottom edge 15h Side edge 15i Cutout surface T1 Upstream passage T2 Downstream passage C Foamable composition L Liquid phase G Gas phase

Claims (4)

The present invention comprises a discharge container with a valve, the inside of which is divided into a liquid phase and a gas phase, and a discharge member attached to the valve,
the valve comprises an introduction hole for introducing a liquid phase of the foamable composition into the valve, a stem, and a stem rubber for opening and closing a stem hole of the stem,
the ratio (A1/A2) of the flow path area (A1) of the inlet hole of the housing to the flow path area (A2) of the stem hole is 1 to 2;
The discharge member has a discharge nozzle in communication with the stem;
The discharge nozzle has an internal passage extending in an axial direction of the discharge nozzle and an opening opening at a side of the internal passage,
the valve further comprises an upstream passage from the introduction hole to the stem hole, which is in communication with the liquid phase but not with the gas phase, and a downstream passage from the stem hole to the outside of the stem;
The upstream passage determines the rate of discharge of the foamable composition per unit time.
Discharge products. The valve further comprises a housing that receives the stem and a tube attached to the housing;
an upstream passageway through the housing and the tube;
2. The dispensing product of claim 1, wherein the inlet and/or tube in the housing are rate limiting. 3. The discharge product according to claim 2 , wherein the ratio (Tl/Td) of the tube passage length (Tl) to the tube inner diameter (Td) is 20-150. The discharge product according to any one of claims 1 to 3 , wherein the foamable composition is pressurized by compressed gas in the discharge container.

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