WO2022196737A1

WO2022196737A1 - Liquid container

Info

Publication number: WO2022196737A1
Application number: PCT/JP2022/012036
Authority: WO
Inventors: 武志横山; 沙耶香宮森
Original assignee: サンメディカル株式会社
Priority date: 2021-03-19
Filing date: 2022-03-16
Publication date: 2022-09-22
Also published as: JP7039745B1; JP2022145303A

Abstract

A liquid container 1 comprises a container body 2, a nozzle 31, and a partition member 4A. The container body 2 has an accommodating part 20 for accommodating a liquid. The nozzle 31 has a discharge port 311 for discharging the liquid in the accommodating part 20. The partition member 4A partitions the accommodating part 20 and the discharge port 311. The partition member 4A has a through-hole 411. The through-hole 411 communicates the discharge port 311 and the accommodating part 20 in both a state in which the internal pressure in the container body 2 is elevated and a state in which elevation of the internal pressure in the container body 2 is removed. The liquid in the accommodating part 20, by elevation of the internal pressure in the container body 2, passes through the through-hole 411 against the surface tension of the liquid.

Description

container for liquids

The present invention relates to liquid containers.

Conventionally, it is known to fill a squeeze-type container with a liquid such as a dental adhesive and let it drip from the container as needed.

Such a squeeze-type container includes, for example, a flexible container body, a nozzle portion having a flow passage for discharging liquid, and a space between the liquid storage chamber in the container body and the flow passage of the nozzle portion. A partition member forming a chamber is provided, and a diaphragm valve having a slit for blocking or circulating the flow of liquid between the liquid storage chamber and the partition chamber is formed in the partition member, and the diaphragm valve opens and closes the slit by elastic force. Liquid containers have been proposed (see, for example, Patent Document 1).

In such a liquid container, the slit of the diaphragm valve is opened by pressing the container body and elastically deforming the container body. Then, the liquid passes through the slit of the diaphragm valve from the liquid storage chamber, reaches the partition chamber, and is dripped from the flow path of the nozzle portion.

In addition, when the pressure on the container body is released and the container body is restored, the internal pressure of the container body decreases. As a result, the liquid remaining in the flow path of the nozzle portion flows from the flow path into the liquid storage chamber through the partition and the slit of the diaphragm valve. At this time, the diaphragm valve is elastically deformed to close the slit.

JP 2010-274946 A

However, in the liquid container described in Patent Document 1, the diaphragm valve is repeatedly elastically deformed in order to open and close the slit. Therefore, if the liquid container is used for a long period of time, the diaphragm valve may gradually deform. Deformation of the diaphragm valve can lead to instability in the amount of liquid dispensed.

Therefore, the present invention provides a liquid container that can ensure stable dripping performance over a long period of time.

The present invention [1] comprises a container body having a storage portion for storing a liquid, a nozzle having a discharge port for discharging the liquid in the storage portion, and a partition member for partitioning the storage portion and the discharge port, The partition member is a through hole that allows communication between the discharge port and the accommodating portion both when the internal pressure inside the container body is increased and when the increase in the internal pressure inside the container body is released, A liquid container having a through-hole through which the liquid in the containing portion can pass against the surface tension of the liquid due to an increase in internal pressure in the container body.

According to such a configuration, the through-hole allows communication between the discharge port and the storage section both in a state in which the internal pressure inside the container body is increased and a state in which the increase in internal pressure within the container body is released. Then, due to the increase in the internal pressure in the container body, the liquid in the container passes through the through-hole against the surface tension of the liquid.

Therefore, there is no need to elastically deform the partition member, and deformation of the partition member can be suppressed during long-term use of the liquid container.

As a result, stable dripping performance can be secured over the long term.

The present invention [2] includes the liquid container of [1] above, comprising a plurality of partition members.

According to such a configuration, the plurality of partition members can prevent excessive discharge of the liquid in the container when the internal pressure in the container body rises.

This makes it possible to achieve more stable drip performance with a simple configuration.

In the present invention [3], the container body has flexibility, and when the container body is pressed and deformed, the internal pressure in the container body rises, and the container body is pressed. is released and the container body restores, thereby releasing the increase in internal pressure in the container body according to [1] or [2].

According to such a configuration, it is possible to control the internal pressure in the container body with a simple configuration, and achieve more stable dripping performance.

According to the liquid container of the present invention, stable dripping performance can be ensured over a long period of time.

FIG. 1 shows a schematic diagram for explaining one embodiment of the liquid container of the present invention. 2 is a perspective view of the partition member shown in FIG. 1. FIG. FIG. 3A is an explanatory view for explaining a mode of use of the liquid container shown in FIG. 1, and shows a state in which the container body is pressed. FIG. 3B shows a state in which the pressure on the container body is released and the container body is restored, following FIG. 3A. FIG. 4 shows a schematic configuration diagram of a nozzle cap and a partition member according to a first modification of the liquid container of the present invention. FIG. 5 shows a schematic configuration diagram of a nozzle cap and a partition member according to a second modification of the liquid container of the present invention.

<Liquid container>
A liquid container 1 as one embodiment of the liquid container of the present invention will be described with reference to FIGS. 1 to 3B. The application field of the liquid container 1 is not limited. The liquid container 1 can be used, for example, as experimental equipment and manufacturing equipment used in research and manufacturing of medical equipment used in medicine and dentistry, pharmaceuticals, cosmetics, and industrial products.

As shown in FIG. 1, the liquid container 1 includes a container body 2, a nozzle cap 3, and a plurality of

partition members

4A and 4B.

(1) Container Body The container body 2 can contain liquid. The liquid contained in the container body 2 is not limited. The liquid may be solid at normal temperature. The liquid may be in a liquid state within a temperature range suitable for use of the liquid.

Liquids include, for example, dental liquids, eye drops, clinical test reagents, reagents, adhesives, paints, diluents, cleaning liquids, degreasing liquids, and coupling agents, preferably dental liquids. be done. Dental fluids include, for example, dental adhesives and dental primers. A dental liquid material contains, for example, a polymerizable monomer, a polymerization initiator, a volatile solvent, and water.

Examples of polymerizable monomers include (meth)acrylate and (meth)acrylamide. (Meth)acrylates include methacrylates and acrylates. (Meth)acrylate may contain a hydroxyl group. Also, the (meth)acrylate may contain an acidic group. (Meth)acrylamides include methacrylamide and acrylamide. (Meth)acrylamide may contain a hydroxyl group. (Meth)acrylamide may also contain an acidic group. The polymerizable monomers can be used alone or in combination of two or more.

Examples of polymerization initiators include photopolymerization initiators and chemical polymerization initiators. A polymerization initiator can be used alone or in combination of two or more.

The boiling point of the volatile solvent is, for example, 30°C or higher and, for example, 90°C or lower, preferably 80°C or lower, more preferably 70°C or lower.

Volatile solvents include, for example, alcohols and ketones. Alcohols include, for example, ethanol and 2-propanol. Ketones include, for example, acetone. A volatile solvent can be used individually or in combination of 2 or more types. Among the solvents, ketones are preferred, and acetone is more preferred.

The container body 2 has a hollow shape. The container body 2 integrally has a body portion 21 , a bottom portion 22 , a shoulder portion 23 and a mouth portion 24 . The trunk portion 21 has a tubular shape extending in a predetermined direction. A bottom portion 22 closes one end of the body portion 21 . The shoulder portion 23 continues from the other end of the body portion 21 and extends toward the inside of the body portion 21 . The body portion 21 , the bottom portion 22 and the shoulder portion 23 constitute the housing portion 20 . That is, the container main body 2 has an accommodating portion 20 . The containing portion 20 contains liquid. Mouth 24 continues from shoulder 23 and extends away from bottom 22 . Mouth 24 has a cylindrical shape. The internal space of the mouth portion 24 communicates with the internal space of the body portion 21 .

The container body 2 may have flexibility. In the case where the container body 2 has flexibility, as will be described later in detail, when the user holds the trunk portion 21 of the container body 2 between fingers and presses the trunk portion 21 inward, the trunk is bent. The portion 21 is recessed inward (see FIG. 3A). The inner pressure inside the container body 2 increases as the body portion 21 is pressed and deformed. Further, when the pressure applied to the trunk portion 21 is released, the trunk portion 21 is restored (see FIG. 3B). When the pressure applied to the body portion 21 is released and the body portion 21 is restored, the increase in the internal pressure inside the container body 2 is released.

Examples of materials for the container body 2 include resin. Examples of resins include polyolefins, polyesters, polyacetals, and acrylonitrile-butadiene-styrene copolymers. These resins can be used singly or in combination of two or more.

The internal volume of the container body 2 is, for example, 1 mL or more, preferably 2 mL or more, more preferably 3 mL or more, and is, for example, 50 mL or less, preferably 30 mL or less, more preferably 20 mL or less, more preferably 10 mL or less.

The nozzle cap 3 is attached to the mouth portion 24 of the container body 2 . The nozzle cap 3 closes the mouth portion 24 while the nozzle cap 3 is attached to the mouth portion 24 . The nozzle cap 3 integrally has an insertion portion 33 , a nozzle 31 and a flange 32 . In other words, the liquid container 1 has the nozzle 31 .

The insertion portion 33 is inserted into the mouth portion 24 of the container body 2 . The insertion portion 33 has a first wall 331 and a second wall 332 .

The first wall 331 has a cylindrical shape extending in a predetermined direction. A space inside the first wall 331 is defined as an accommodation space S. As shown in FIG. The outer diameter of the first wall 331 is greater than or equal to the inner diameter of the mouth portion 24 and is within a range in which the insertion portion 33 can be inserted into the mouth portion 24 . When the insertion portion 33 is inserted into the mouth portion 24, the outer surface of the first wall 331 is in contact with the inner surface of the mouth portion 24 to ensure liquid tightness.

The second wall 332 extends in a direction crossing the direction in which the first wall 331 extends and closes one end of the first wall 331 . The first wall 331 and the second wall 332 define an accommodation space S for accommodating the partition member 4 . The second wall 332 has holes 3321 . The position of the hole 3321 is not limited as long as it is inside the outer circumference of the second wall 332 . A hole 3321 may be located in the center of the second wall 332 . Hole 3321 may be offset from the center of second wall 332 . The hole 3321 communicates with the accommodation space S.

The nozzle 31 is positioned outside the container body 2 . The nozzle 31 is located on the opposite side of the body portion 21 of the container body 2 with respect to the second wall 332 of the insertion portion 33 . The position of the nozzle 31 is not limited as long as it is inside the outer circumference of the flange 32 . The nozzle 31 may be located in the center of the second wall 332 . The nozzle 31 may be offset from the center of the second wall 332 . The nozzle 31 may be displaced from the hole 3321 in the extending direction of the second wall 332 as long as the ejection port 311 communicates with the hole 3321 . The ejection port 311 will be described later. The nozzle 31 continues to the second wall 332 . The shape of the nozzle 31 is not limited. In this embodiment, the nozzle 31 has a tapered shape that tapers away from the second wall 332 . The shape of the nozzle 31 may be straight or curved. Nozzle 31 extends in a predetermined direction. The nozzle 31 has an ejection port 311 . Although details will be described later, the ejection port 311 ejects the liquid when the body portion 21 of the container body 2 is pressed. The ejection port 311 penetrates the nozzle 31 in a predetermined direction. The outlet 311 communicates with the hole 3321 . Thereby, the discharge port 311 communicates with the accommodation space S through the hole 3321 .

The diameter of the discharge port 311 is not limited. The diameter of the ejection port 311 is, for example, 0.3 mm or more, preferably 1.0 mm or more, more preferably 1.5 mm or more, and for example, 10 mm or less, preferably 5 mm or less, more preferably 3 mm or less. be.

The flange 32 protrudes from the peripheral side surface of the second wall 332 of the insertion portion 33 in a direction intersecting with the extending direction of the first wall 331 . The flange 32 contacts the free end surface of the mouth portion 24 while the insertion portion 33 is inserted into the mouth portion 24 .

As a material for the nozzle cap 3, for example, the same resin as the material for the container body 2 described above can be used.

The

partition members

4A, 4B are housed in the housing space S of the nozzle cap 3. The

partition members

4A and 4B are located between the housing portion 20 and the ejection port 311. As shown in FIG. The

partition members

4A and 4B separate the storage portion 20 and the ejection port 311 from each other. Specifically, as shown in FIG. 2, the partition member 4A has a peripheral wall 42, a partition wall 41, and a through hole 411. As shown in FIG. The partition member 4B has the same structure as the partition member 4A. Therefore, description of the partition member 4B is omitted.

The peripheral wall 42 has a cylindrical shape extending in a predetermined direction. The peripheral wall 42 functions as a spacer for securing a space between the second wall 332 and the partition wall 41 . The outer diameter of the peripheral wall 42 is greater than or equal to the inner diameter of the first wall 331 and is within a range in which the peripheral wall 42 can be inserted into the first wall 331 . When the partition member 4 is accommodated in the accommodation space S, the outer surface of the peripheral wall 42 is in contact with the inner surface of the first wall 331 to ensure liquid tightness (see FIG. 1).

The inner diameter of the peripheral wall 42 is, for example, 3 mm or more, preferably 5 mm or more, more preferably 7 mm or more, and is, for example, 20 mm or less, preferably 15 mm or less, more preferably 10 mm or less.

The dimension of the peripheral wall 42 in the axial direction is, for example, 0.5 mm or more, preferably 1 mm or more, more preferably 3 mm or more, and is, for example, 20 mm or less, preferably 15 mm or less, more preferably 10 mm or less. , more preferably 5 mm or less.

Although the details will be described later, the partition wall 41 partitions the internal space of the liquid container 1 into a first chamber R1 communicating with the discharge port 311 and a second chamber R2 containing the liquid (see FIG. 1). The partition wall 41 extends in a direction crossing the extending direction of the peripheral wall 42 and closes one end of the peripheral wall 42 .

The thickness of the partition wall 41 is not limited as long as the liquid can pass through the through hole 411 while the internal pressure inside the container body 2 is increased. For example, the partition wall 41 is not easily destroyed or deformed when the body portion 21 of the container body 2 is pressed, so long as the through hole 411 is maintained.

The thickness of the partition wall 41 is, for example, 0.05 mm or more, preferably 0.1 mm or more, and is, for example, 15 mm or less, preferably 10 mm or less, more preferably 5 mm or less, more preferably 2 mm or less. .

Also, the partition wall 41 may be inclined toward the housing portion 20 toward the through hole 411 . When the partition wall 41 is inclined toward the container 20 , the liquid container 1 is placed so that the container 20 is positioned below the nozzle 31 while the internal pressure inside the container body 2 is released. In this case, the liquid in the first chamber R1 can flow toward the through hole 411 and be accommodated in the second chamber R2 via the through hole 411. FIG.

The through hole 411 is located in the partition wall 41 . The through hole 411 communicates with the internal space of the peripheral wall 42 . In this embodiment, the through hole 411 is circular. The shape of through hole 411 is not limited. The shape of the through-hole 411 may be oval, triangular, quadrangular, or star-shaped, for example.

When the through hole 411 is circular, the diameter of the through hole 411 is smaller than the diameter of the discharge port 311, for example. The diameter of the through hole 411 can be changed as appropriate according to the surface tension of the liquid. Specifically, the upper limit of the diameter of the through hole 411 is such that the liquid does not pass through due to the surface tension of the liquid when the internal pressure inside the container body 2 is not increased. The lower limit of the diameter of the through-hole 411 is such that the liquid can pass through it against the surface tension of the liquid when the internal pressure inside the container body 2 is increased. If the liquid has a low surface tension, the diameter of the through-hole 411 is set small. When the surface tension of the liquid is high, the diameter of the through hole 411 is set large.

The diameter of the through hole 411 is, for example, 0.1 mm or more, preferably 0.2 mm or more, more preferably 0.3 mm or more, still more preferably 0.5 mm or more, and for example, 4.0 mm or less. is 3.5 mm or less, more preferably 3.0 mm or less, and most preferably 2.5 mm or less.

When the diameter of the discharge port 311 is 1, the diameter of the through hole 411 is, for example, 0.01 or more, preferably 0.05 or more, more preferably 0.1 or more, and for example, 5 or less, preferably. is 1 or less, more preferably 0.5 or less.

If the shape of the through hole 411 is other than circular, the size can be set based on the area of the through hole 411 when it is circular.

If the inner diameter of the through-hole 411 is equal to or greater than the above lower limit, the through-hole 411 can stably pass the liquid when the container body 2 is pressed, and the pressure on the container body 2 is eliminated. Also, the communication state of the through hole 411 can be maintained. If the inner diameter of the through hole 411 is equal to or less than the above upper limit, the handleability of the liquid container 1 can be improved, and a desired amount of liquid can be stably supplied from the liquid container 1 when the liquid container 1 is used. can be dripped.

In this embodiment, the partition wall 41 has one through hole 411 for convenience, but the number of through holes 411 is not particularly limited. The number of through-holes 411 is, for example, 1 or more and, for example, 10 or less, preferably 5 or less, more preferably 2 or less.

The

partition members

4A and 4B are arranged in the accommodation space S in the direction in which the first wall 331 extends. A free end surface of the peripheral wall 42 of the partition member 4A is in contact with the second wall 332 . The partition wall 41 of the partition member 4A is arranged with a space from the second wall 332 . A partition wall 41 of the partition member 4A is positioned between the nozzle 31 and the body portion 21 of the container body 2 .

Also, the partition member 4B is located on the opposite side of the second wall 332 with respect to the partition member 4A. A free end surface of the peripheral wall 42 of the partition member 4B is in contact with the partition member 4A. The partition wall 41 of the partition member 4B is located on the opposite side of the second wall 332 with respect to the partition wall 41 of the partition member 4A. The partition wall 41 of the partition member 4B is spaced apart from the partition wall 41 of the partition member 4A.

As a result, the partition wall 41 of the two

partition members

4A and 4B partitions the internal space of the liquid container 1 into a first chamber R1 communicating with the discharge port 311 and a second chamber R2 containing the liquid.

In this embodiment, the first chamber R1 includes two subchambers R11 and R12. The compartment R11 is defined by the peripheral wall 42 of the partition member 4A, the partition wall 41, and the second wall 332. As shown in FIG. The compartment R11 communicates with the outlet 311 through the hole 3321. As shown in FIG.

The compartment R12 is defined by the peripheral wall 42 and the partition wall 41 of the partition member 4B and the partition wall 41 of the partition member 4A. The compartment R12 communicates with the compartment R11 through a through hole 411 of the partition member 4A. The separate chamber R12 communicates with the second chamber R2 via a through hole 411 of the partition member 4B.

The second chamber R2 is the internal space of the housing portion 20 of the container body 2.

The through hole 411 of the partition member 4 communicates between the first chamber R1 and the second chamber R2 both in the state in which the container body 2 is pressed and in the state in which the pressure on the container body 2 is released. Specifically, in both the state in which the container body 2 is pressed and the state in which the pressure on the container body 2 is released, the through hole 411 of the partition member 4A communicates the divided chambers R11 and R12, and the partition member 4B. The through hole 411 communicates the sub-chamber R12 and the second chamber R2. As a result, the through hole 411 of the partition member 4A and the through hole 411 of the partition member 4B both in a state where the internal pressure inside the container body 2 is increased and a state where the increase in internal pressure inside the container body 2 is cancelled. communicates the discharge port 311 and the housing portion 20 .

The internal volume of each of the compartments R11 and R12 is, for example, 0.1 mm ³ or more, preferably 1 mm ³ or more, more preferably 2 mm ³ or more, and for example, 9.9 mm ³ or less, preferably 7 mm ³ or less, more preferably 5 mm ³ or less.

The internal volume of the compartment R12 is, for example, 1/5 or more, preferably 1/3 or more, more preferably 1/2 or more, for example, 5 times or less, preferably 1/5 or more, preferably , 3 times or less, more preferably 2 times or less, more preferably 1 time. When the number of partition members 4 is three or more, the internal volume of any one of the multiple compartments may be used as a reference, and the internal volume of the compartments other than the reference compartment may be adjusted within the above range. can.

The internal volume of the first chamber R1 (the sum of the internal volumes of the sub-chambers R11 and R12) is, for example, 2.0 mm ³ or more, preferably 2.5 mm ³ or more, more preferably 3.0 mm ³ or more, and even more preferably is 4.0 mm ³ or more, and is, for example, 10 mm ³ or less, preferably 9.0 mm ³ or less, more preferably 6.0 mm ³ or less.

If the internal volume of the first chamber R1 is within the above range, the handleability of the liquid container 1 can be further improved. can be dripped more stably from

(2) Usage Mode of Liquid Container Next, a usage mode of the liquid container 1 will be described with reference to FIGS. 3A and 3B.

As shown in FIG. 3A, when the liquid is to be discharged from the liquid container 1, the user holds the body 21 of the container body 2 between his/her fingers and directs the nozzle 31 downward. Then, the body portion 21 is pressed with a finger. Then, the trunk portion 21 is dented inward, and the internal pressure of the container body 2 is increased. As a result, the liquid contained in the second chamber R2 of the container body 2 passes through the through hole 411 of the partition member 4B, the divided chamber R12, the through hole 411 of the partition member 4A, and the divided chamber R11 in this order, and flows through the nozzle 31. is dropped from the ejection port 311 of .

After that, as shown in FIG. 3B, when a desired amount of liquid is dripped from the liquid container 1, the user releases the pressure of the body 21 of the container body 2. Then, the body portion 21 is restored and the internal pressure of the container body 2 is lowered. Then, the liquid remaining in the ejection port 311 of the nozzle 31 passes through the partitioned chamber R11, the through hole 411 of the partition member 4A, the partitioned chamber R12, and the through hole 411 of the partition member 4B into the second chamber R2 of the container body 2. returned. Similarly, the liquid remaining in the first chamber R1 is also returned to the second chamber R2 of the container body 2.

In this embodiment, as a method of pushing out the liquid in the liquid container 1 by internal pressure, the body portion 21 of the container body 2 is pressed with a finger. is not restricted. As a method of pushing out the liquid in the liquid container 1 by internal pressure, for example, the container body 2 is heated, and the volume expansion of the liquid in the container body 2 due to the increased temperature or the volume expansion of the gas due to the heating causes the volume expansion of the container body 2 . A method of pushing out the liquid inside, and a knock type method of pushing out the liquid material in the container body 2 by internal pressure can be used.

(3) Effects As shown in FIGS. 3A and 3B, in the liquid container 1, the container main body 2 is pressed to increase the internal pressure inside the container main body 2 (see FIG. 3A), and The through hole 411 communicates with the discharge port 311 and the accommodating portion 20 both in the state in which the pressure is released and the increase in the internal pressure inside the container body 2 is released (see FIG. 3B).

Then, as shown in FIG. 3A, due to the increase in the internal pressure in the container body 2, the liquid in the storage section 20 passes through the through hole 411 against the surface tension of the liquid.

Therefore, there is no need to elastically deform the

partition members

4A and 4B, and deformation of the

partition members

4A and 4B can be suppressed during long-term use of the liquid container 1.

As a result, stable dripping performance can be secured over the long term.

Further, according to the liquid container 1, as shown in FIG. 1, when the pressure on the container body 2 is released and the container body 2 is restored, the liquid remaining in the discharge port 311 and the first chamber R1 is allowed to pass through. It can be collected in the second chamber R2 of the container body 2 through the hole 411 .

As a result, it is possible to suppress the liquid from remaining in the ejection port 311 and the first chamber R1, and it is possible to suppress the components contained in the liquid from sticking in the ejection port 311 and the first chamber R1.

As a result, the liquid container 1 can ensure stable dripping performance over a longer period of time.

Further, according to the liquid container 1, the internal temperature of the liquid container 1 may rise due to the user's body temperature warming the liquid container 1. In this case, the air inside the liquid container 1 expands. Also, if the liquid contains a volatile solvent, volatilization of the volatile solvent is promoted. Then, the internal pressure of the container main body 2 rises.

However, the partition wall 41 of the partition member 4B regulates the amount of liquid flowing from the second chamber R2 into the first chamber R1. Therefore, even if the internal pressure of the container body 2 rises due to the body temperature of the user, excessive ejection of the liquid from the ejection port 311 of the nozzle 31 can be suppressed. As a result, the handleability of the liquid container 1 can be improved, and a desired amount of liquid can be stably dripped from the liquid container 1 .

<Modification>
In the embodiment described above, as shown in FIG. 1, the liquid container 1 includes a plurality (two) of

partition members

4A and 4B, and the first chamber R1 includes two subchambers R11 and R12. The number of members 4 is not limited. As shown in FIG. 4, the number of partition members 4 may be one. The number of partition members 4 is, for example, 6 or less, preferably 4 or less, more preferably 3 or less, and particularly preferably 2.

If the number of partition members 4 is within the above range, it is possible to reliably improve the handleability of the liquid container 1, and when the liquid container 1 is used, a desired amount of liquid can be stably supplied from the liquid container 1. can be dripped.

In addition, in the above-described embodiment, as shown in FIG. 1, the partition member 4 includes the partition wall 41 and the peripheral wall 42, but the configuration of the partition member 4 is not limited to this. As shown in FIG. 5, the partition member 4 need not have the peripheral wall 42 as long as it has the partition wall 41 . In FIG. 5 , the partition member 4 consists of a partition wall 41 . If the partition member 4A does not have the peripheral wall 42, the space between the second wall 332 and the partition wall 41 may be secured by a spacer that is a separate member from the partition member 4A.

Although the nozzle cap 3 and the partition wall 41 are separate in the above embodiment, the partition wall 41 may be integrated with the nozzle cap 3 .

These modifications can also achieve the same effects as the above-described embodiment.

The present invention will be explained more specifically by showing examples below, but the present invention is not limited to them. Specific numerical values such as the mixing ratio (content ratio), physical property values, and parameters used in the following description are described in the above "Mode for Carrying Out the Invention", the corresponding mixing ratio (content ratio ), physical properties, parameters, etc. can.

(Examples 1 to 3 and Comparative Example 1)
A liquid container shown in FIG. 1 was prepared. The liquid container includes a container body, a nozzle cap, and the number of partition members shown in Table 1. The internal volume of the container body is 5 mL. A partition wall of the partition member has one communicating hole. The inner diameter of the communication hole is 0.5 mm. Table 1 shows the thickness of the partition member (the axial dimension of the peripheral wall), the number of communicating holes each partition wall has, and the internal volume of the first chamber (total internal volume of the sub-chambers).

(Examples 4-8)
A liquid container was prepared in the same manner as in Example 2. In Examples 4 to 8, the inner diameter of the communication hole was changed to the value shown in Table 2.

(Examples 9 and 10)
A liquid container was prepared in the same manner as in Example 2. In Examples 9 and 10, the number of communicating holes in each partition wall was changed to the number shown in Table 3.

(Examples 11 to 16)
A liquid container was prepared in the same manner as in Example 2. In Examples 11 to 16, the internal volume of the first chamber was changed to the value shown in Table 4.
<Evaluation>
The liquid container of each example and each comparative example was filled with 3 mL of acetone (volatile solvent) in Examples 1 to 3 and Comparative Example 1, and in Examples 4 to 16, a mixture of acetone and water ( Acetone/water=70 parts by mass/30 parts by mass) 3 mL was filled. Then, the body of the container body was pinched between the thumb and forefinger, and the liquid container was held so that the nozzle faced downward. This caused the liquid container to be warmed by the body temperature of the user.

In this state, the time from when the nozzle of the liquid container was directed downward to when the liquid dripped from the discharge port of the nozzle was measured. The results were evaluated according to the following criteria. The results are shown in Tables 1-4.

It should be noted that if the liquid drops immediately from the ejection port without the user pressing the container body, it is determined that the amount of liquid dropped cannot be stably adjusted when the liquid container is in use.

○: Do not drip for more than 3 seconds.

△: Dropped in more than 1 second and 3 seconds or less.

×: Dropped within 1 second.

1 Liquid container 2 Container main body 31 Nozzle 311 Discharge port 4 Partition member 411 Through hole Although the above invention was provided as an exemplary embodiment of the invention, this is merely an example and should be construed in a limited manner. should not. Variations of the invention that are obvious to those skilled in the art are included in the following claims.

The liquid container of the present invention can be used, for example, as experimental equipment and manufacturing equipment used in research and manufacturing of medical equipment used in medicine and dentistry, pharmaceuticals, cosmetics and industrial products.

Claims

a container body having a storage portion that stores a liquid;
a nozzle having a discharge port for discharging the liquid in the container;
A partition member for partitioning the storage portion and the ejection port,
The partition member is
A through hole that allows communication between the discharge port and the accommodating portion in both a state in which the internal pressure in the container body is increased and a state in which the increase in the internal pressure in the container body is released, the through hole in the container body. A container for liquid, having a through hole through which the liquid in the containing portion can pass against the surface tension of the liquid due to an increase in internal pressure of the liquid container.
The liquid container according to claim 1, comprising a plurality of said partition members.
The container body has flexibility,
When the container body is pressed and deformed, the internal pressure in the container body rises,
2. The liquid container according to claim 1, wherein pressure on said container main body is released and said container main body is restored, thereby canceling an increase in internal pressure within said container main body.