JP2000238824A - Liquid extraction container - Google Patents

Abstract

(57) [Problem] To provide a liquid extraction container which can function normally even when a chemical such as a hair dye or a perm solution having strong acidity or alkalinity is added. SOLUTION: The liquid extraction container 1 is composed of a dispenser 10 and a container main body 40 formed of a synthetic resin having excellent chemical resistance (for example, polypropylene (PP)).
The dispenser 10 includes a head 11 fixed to a piston 13, an extraction nozzle 12, a cap 14, and the like.
It is formed by injection molding or the like. The container body 40 is formed in a pouch shape with a thin flexible sheet material, and has an opening 41. The liquid extraction container 1 configured as described above is used by fixing the dispenser 10 to the opening 41 and fixing it to a predetermined special case 2. Then, as contents,
Even if chemicals such as a hair dye or a perm solution having strong acidity or alkalinity are used, the liquid extraction container 1 can be extracted without deteriorating due to a chemical change or the like and impairing the function.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispenser having a pump function for extracting an internal liquid to the outside.
The present invention relates to a liquid extraction container attached to a flexible container.

[0002]

2. Description of the Related Art Heretofore, as a container suitable for shampoo, rinsing or the like, a container main body in which a thin flexible sheet material is formed in a bag shape, and a head provided in an upper opening of the container main body, There has been proposed a liquid extraction container including a dispenser having a pump function of pumping contents (liquid) in a flexible container by utilizing a restoring force of a coil spring as an elastic body by manually pressing down (actually). See JP-A-6-6253).

According to the proposed liquid extraction container, the container body is formed of a thin flexible sheet material, and the container body and the dispenser are all formed of synthetic resin, including the coil spring in the dispenser. Is done. Therefore, the container body is lighter than conventional non-flexible containers and can be manufactured inexpensively without taking up a large volume. And the dispenser can be mounted on a new container body and reused. Further, unlike the conventional case, the metal coil spring does not corrode due to the contents and loses the restoring force of the spring, and impurities such as rust generated by the corrosion do not enter the contents.

[0004]

However, the above-mentioned liquid extraction container was certainly optimal for use in shampoos, rinses, etc. When used for chemicals or the like, there is a problem that a chemical reaction is induced depending on the material of the synthetic resin constituting the container. In other words, when such a chemical reaction occurs, the coil spring of the dispenser loses the restoring force, and the contents cannot be extracted from the dispenser's extraction port, or the contents of the container body leak due to a hole in the container body. There was a risk of doing so.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a liquid extraction container which can function normally even when a chemical such as a hair dye or a perm solution having a strong acidic or alkaline property is added. With the goal.

[0006]

Means for Solving the Problems and Effects of the Invention According to the first aspect of the present invention, there is provided a container formed of a thin flexible sheet material and provided with an opening at an upper portion. It has a main body, an operation head that can be moved up and down, and an elastic body that urges the head upward, and is attached to an opening of the container main body, and when the head is pushed down, the contents of the container main body are reduced. And a dispenser for pumping an object, wherein the liquid extraction container is used by fixing an opening of the container main body to a predetermined frame, wherein the elastic body of the dispenser and a sheet material forming the container main body have at least a surface. Are formed of a synthetic resin having excellent chemical resistance, and the container body is further filled with a hair dye or a perm agent.

According to the liquid extraction container of the present invention (claim 1), at least the surface of the elastic body of the dispenser and the sheet material constituting the container main body are formed of a synthetic resin having excellent chemical resistance. Chemicals such as hair dyes and permanents having strong acidity or alkalinity, such as oxidative hair dyes
Even if an oxidizing chemical such as a hydrogen peroxide solution is used as a content, the surface of the elastic body or the container body does not cause a chemical change to generate impurities such as rust. Also, there is no loss of the restoring force of the elastic body of the dispenser, and no holes are made on the surface of the container body or the like.
Therefore, according to the liquid extraction container according to the first aspect, even if a chemical having a strong oxidizing / reducing action is used as the content, it functions normally and extracts the content without contamination. Can be.

Further, since the container body is formed of a thin and flexible sheet material, the contents, for example, chemicals such as hydrogen peroxide solution are decomposed in the container body, and thereby the container body is formed. Even if the internal pressure rises abruptly and the pressure concentrates on a specific location, the sheet material is softly bent and disperses the pressure, so there is no danger that the container body will burst and the contents inside will leak. In addition, it is possible to store a larger amount of medicine than an impression given from the appearance, and it is most suitable for use as a business type container used in a beauty salon or the like.

When the contents are used up and disposed of,
After removing the dispenser from the container body, only the container body can be rolled up and crushed by hand. For this reason,
The volume of the garbage in the originally lightweight container body can be reduced, which can contribute to the problem of garbage disposal. Also,
The removed dispenser can be attached to a new container body and reused, which can contribute to resource saving.

The elastic body of the dispenser may be entirely formed of a synthetic resin having excellent chemical resistance.
May be formed by coating the surface of a metal coil spring with a synthetic resin. In this case, as a method of coating the metal surface with the synthetic resin, for example, a method of applying a surface film by spraying with a spray or the like, or
There is known a method of performing a so-called lamination process in which a film is formed on a surface by injection molding. The elastic body formed by such a method has a stronger restoring force than the elastic body formed only of the synthetic resin, and also has a durability that is not easily deformed even when heat or the like is applied. Therefore,
When the elastic body according to the second aspect is used for the dispenser of the liquid extraction container of the present invention, the container is more convenient in addition to the effect according to the first aspect.

As a material of the container body 40, it is desirable to use a synthetic resin having excellent chemical resistance, gas barrier properties, and excellent flexibility which can be easily formed into a sheet shape. (HDPE), medium density polyethylene (MDPE), low density polyethylene (LDPE),
Linear low density polyethylene (LLDPE), ethylene
Saponified vinyl acetate copolymer (EVOH), polyacrylonitrile, polyethylene terephthalate (PET),
A single layer, laminated or mixed of polypropylene (PP), polyester, vinyl and nylon is preferred.

Next, the material of the dispenser 10 is as follows.
It is desirable to use a synthetic resin having excellent chemical resistance and excellent moldability and strength. Specifically, polyacetal, polyphenylene sulfide, polybutylene terephthalate, polyamide, polypropylene (PP), polyethylene (PE: PE) Is HDPE, MDPE, LDP
E, LLDPE), polyoxymethylene, polyamide imide, epoxy phenol, vinyl organosol, polycarbonate, modified polyphenylene oxide, reinforced polyethylene terephthalate, polysulfone, polyphenylene sulfide, polyarylate, polyetherimide, polyetheretherketone , Polyoxybenzoyl or polyimide synthetic resin is preferably a single layer, laminated or mixed.

[0013] Among the components constituting the dispenser, the material of the coil spring is particularly excellent in formability, strength, and chemical resistance. PP), polyethylene (PE), polyoxymethylene, polyamideimide,
A single layer, laminate or mixture of epoxy phenol and vinyl organosol is preferred.

In the following description, when there is an abbreviation described in parentheses after the name of the synthetic resin, it may be described only by the abbreviation.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the present invention, and FIG. 1 is a perspective view showing a configuration of a liquid extraction container. FIG. 2 is a longitudinal sectional view showing the configuration of the dispenser attached to the container body.

The liquid extraction container 1 shown in FIG. 1 is composed of a dispenser 10 and a container body 40, and both are made of a synthetic resin made of, for example, polypropylene (PP) having chemical resistance. Here, the container main body 40 is formed by fixing required portions by a fixing means such as fusion or bonding with a thin flexible sheet material, and a central portion of the upper surface in the front-rear direction bulges upward. An opening 41 for attaching a dispenser 10 and injecting a chemical such as a hair dye or a perm solution as a content is formed in the center of the upper end.
And a so-called pouch in which the outer periphery of a cylindrical lower end portion having a predetermined shape is fixed to the periphery thereof.

On the outside of the dispenser 10, an operation head 11 for extracting the contents fixed to the piston 13; an extraction nozzle 12 having an extraction port for extracting the contents; A cap 14 is provided for attaching to the opening 41 of the main body 40, and is formed by a normal molding method such as injection molding. The detailed structure and use example of the dispenser 10 will be described later.

The liquid extraction container 1 configured as described above is
Dispenser 10 is connected to container body 4 via cap 14.
0, and the exclusive case 2 shown in FIG.
Used fixed to. Here, the special case 2 is formed in a box-like shape with one side opened and the upper part slightly narrower, and the upper surface thereof has a cutout 3 formed in a rectangular shape from the center of the upper end to the center. And a locking projection 4, and a lower surface is provided with a circular hole 5 for discharging dust and moisture.

When the liquid extraction container 1 is attached to the special case 2, the cap 14 of the opening 41 of the container body 40 is used.
The lower part, to which is not attached, is pushed into the above-mentioned notch 3 and fitted so that the periphery of the opening 41 is stopped by the locking projection 4 provided in the notch 3. Then, the container body 4
0 can be inserted inside the special case 2 by inserting it from the side of the opening of the special case 2.

Next, the structure and an example of use of the dispenser 10 used in the liquid extraction container 1 of the present embodiment will be described with reference to the longitudinal sectional view shown in FIG. The dispenser 10 shown in FIG. 2 includes a cylinder 15, a piston 13 that moves up and down in the cylinder 15, and the like, and an opening of a container body 40 containing contents (here, a hair dye or a perm solution is shown) is closed by a cap 14. It is attached to the part 41. Cylinder 15
Is formed in a hollow cylindrical shape, the lower portion is formed so as to have a continuously narrow width, and an introduction pipe 31 is provided at the lowermost portion.

An engaging wall 19 is provided upright on the inner wall of the cylinder 15, and a piston 1
3 is penetrated into a circular shape having a diameter larger than the diameter of the piston 13 so that the contents in the container body 40 can flow into the upper part of the locking wall 19 without resistance so as to allow the insertion portion 24 to pass therethrough. Is formed. Further, a cylindrical introduction member 26 is fitted below the cylinder 15, and further,
A columnar projection 28 is provided in an introduction path 27 of the introduction member 26. Then, the columnar projection 2 in the introduction path 27
In the space formed by the inner wall of the cylinder 8 and the cylinder 15,
A ball valve 29 (made of PP) which is a check valve using gravity is loosely fitted.

On the other hand, the piston 13 is also formed in a hollow cylindrical shape, and the head 11 is fixed to the upper end thereof. The content passage (not shown) inside the piston 13 communicates with the tip of the extraction nozzle 12 attached to the head 11. In addition, approximately in the center of the piston 13,
A disk-shaped packing 16 having substantially the same diameter as the cylinder 15 is erected perpendicularly to the axial direction of the piston 13, and a semi-cylindrical locking wing 18 is provided slightly below the packing 16. The piston 13 is erected so as to face in the diametric direction. Further, a joint 25 having a diameter smaller than the diameter of the piston 13 is provided at the tip of the piston 13. In addition, in the content flow path inside the piston 13, a check valve (not shown) having a function of blocking the intrusion of outside air from the extraction nozzle 12 and allowing only the content in the container body 40 sucked from the joint 25 to pass therethrough. (Not shown).

A coil spring 20 (made of PP) is provided between the locking wing 18 of the piston 13 and the locking wall 19 of the cylinder 15 as a flat elastic body having a spiral shape. A thick return 23 is provided at the tip of the coil spring 20 so that the coil spring 20 does not come off when fitted to a fitting portion 22 provided on the locking wall 19.

Next, an example of use of the dispenser 10 configured as described above will be described. When extracting the contents in the container body 40 to the outside, first, the head 11 is pushed down. Next, when the force for pushing down the head 11 is released,
The piston 13 pushed down with the head 11 rises to a position before being pushed down by the restoring force of the coil spring 20. As the piston 13 rises, the cylinder 1
The pressure in the space 17 (hereinafter, referred to as a variable pressure chamber) 17 partitioned by the side surface of the container 5, the packing 16 and the ball valve 29 becomes lower due to an increase in the volume. The contents in 40 are sucked into the transformation chamber 17 from the inlet 32 at the tip of the cylinder 15. Then, when the head 11 is pushed down again and the piston 13 which has returned to the original position is lowered, the pressure in the variable pressure chamber 17 rises, so that the contents filled in the inside
Is discharged to the outside through the check valve inside the piston 13. As described above, by intermittently pushing down the head 11 and causing the piston 13 to repeatedly move up and down, the dispenser 10 can intermittently extract the contents in the container body 40 to the outside.

When the dispenser 10 is not used, the head 11 is rotated in a fixed direction over several revolutions so that the locking wings 18 attached to the piston 13 slide along the spiral of the coil spring 20. Then, the head 11 is lowered, and is locked by the locking portion 21 bent and formed at the lowermost position of the coil spring 20. By being locked in this way, the head 11 can be held in a depressed state. The dispenser 10 is stored in such a state when not needed, but in this state, the coil spring 20 is not compressed at all. For this reason, the dispenser 10 can maintain a high restoring force for a long period of time, even though it is made of a synthetic resin. In addition, since the head 11 is held in a depressed state, the head 11 is not erroneously depressed, and the contents in the container body 40 are not released to the outside when unnecessary.

The liquid extraction container 1 of the present embodiment constructed and used in this manner is used for strongly acidic or alkaline contents (chemicals) such as hair dyes and perm solutions, so Made of synthetic resin with excellent chemical properties. Examples of the contents to be used include a two-part mixed type oxidative hair dye and perm solution, or an acidic hair dye. Among them, those having acidity include the second oxidative hair dye and the acidic hair dye. The second agent of the perm solution, and the alkaline agents include the first agent of the oxidative hair dye and the first agent of the perm solution.

However, when used as the first agent for oxidative hair dye, the aluminum contained between the flexible synthetic resin layers is used to prevent the dye contained in the chemical (first agent for oxidative hair dye) from penetrating. It is formed in a laminated structure of at least three layers sandwiching the layers. Specifically, MDPE, LDPE, or LLDPE having excellent alkali resistance is arranged inside the aluminum layer.

When used as the first permanent agent,
MDPE, LDPE or L with excellent alkali resistance
LDPE and a laminated structure thereof are preferable, and when used as a second agent for a hair dye, LDPE / LDPE /
HDPE (Laminate of LDPE and HDPE from outside), PET / PE (PE is HDPE, MDPE, LD
PE, LLDPE), PE / EVOH
/ PE, LLDPE, LDPE, or MDPE are preferred.

When used for an acidic hair dye, L
DPE, LLDPE, MDPE, PP, PET, and a laminated structure thereof are preferred. As described above, since the liquid extraction container 1 of the present embodiment is entirely formed of a synthetic resin having excellent chemical resistance, chemicals such as hair dyes and perm solutions having strong acidity or alkalinity, For example, even if a chemical having an oxidizing effect such as a hydrogen peroxide solution of the second oxidative hair dye is used as the content, the coil spring 20 or the container body 40
No chemical change is caused on the surface of the dispenser 10 to generate impurities such as rust, the restoring force of the coil spring 20 of the dispenser 10 is lost, or a hole is formed on the surface of the container body 40 or the like. Nor. Therefore, according to the liquid extraction container 1 of the present embodiment, even if a chemical having a strong oxidizing / reducing action is used as a content, the liquid extraction container 1 can function normally and extract the content without contamination. Can be.

Further, since the container body 40 is formed of a thin flexible sheet material, chemicals as contents, for example, hydrogen peroxide, are decomposed in the container body 40, so that the container body 40 is decomposed. Even if the internal pressure inside the container 40 rises sharply and the pressure concentrates on a specific location, the sheet material flexes softly and disperses the pressure, so that the container body 40 bursts and the contents inside leak. There is no danger. In addition, it is possible to store a larger volume of medicine than the impression given from the appearance, and it is most suitable for use as a business type container used in a beauty salon or the like.

When the contents are used up and discarded, the dispenser 10 is removed from the container main body 40, and then only the container main body 40 is rolled up by hand and crushed. By doing so, the volume of the dust in the container body 40, which is originally light, can be reduced, and this can contribute to the dust disposal problem. Also, the dispenser 10 that has been removed can be attached to a new container body 40 and reused, which can also contribute to resource saving.

As described above, the liquid extraction container 1 according to one embodiment of the present invention has been described, but the present invention is not limited to the above-described embodiment, and various modes can be adopted. The elastic coil spring 20 built in the dispenser 10
Although it is described as being formed of a synthetic resin having excellent chemical resistance, it is not always necessary to be formed of a synthetic resin. For example, it may be formed of a metal spring. In this case, as described above, the surface of the spring is coated with a synthetic resin or laminated. Then, the surface of the metal can be protected from chemicals as contents. As described above, the coil spring 20 in which the surface of the metal is coated with the synthetic resin has a stronger restoring force than the coil spring 20 formed of only the synthetic resin, and also has the durability that the coil spring 20 is not easily deformed even when heat is applied. Therefore, if the coil spring 20 formed as described above is used for the liquid extraction container 1 of the present invention, a more convenient container can be obtained.

Although the elastic body has been described as a coil spring 20 formed of a synthetic resin having excellent chemical resistance, it is not always necessary to form the elastic body in a spiral shape. It may be formed in a cylindrical shape. Further, the ball valve 29 as a check valve has been described by taking as an example a valve formed of a synthetic resin having excellent chemical resistance. However, as in the case of the metal coil spring described above, a metal ball valve is used. The surface of 29 may be coated with a synthetic resin or may be subjected to lamination processing before use. Further, instead of the ball valve 29, when viewed from a longitudinal sectional view (FIG. 2) of the dispenser 1,
The lid valve 29a may be a plate-shaped valve body having one end fixed to the valve seat 30 and the other end being a free end. In this case, the free end of the lid valve 29a opens and closes up and down like a lid of an electric kettle.

The shape of the container body is not limited as long as it is formed of a thin flexible sheet material and has an opening at the top. Further, the dispenser has been described by taking as an example a configuration in which the coil spring can be housed without compression at all when unnecessary, but another configuration as shown in FIG. 3 may be employed. Next, another embodiment of the dispenser will be described with reference to FIG.

The dispenser 50 shown in FIG. 3 includes a head 51 provided with an extraction nozzle 52, a piston 53, a cylinder 55, and the like. Installed. The holder 56 fixes the upper end of the cylinder 55, and has a protrusion 68 at the lower end of the piston 53 that suppresses a force urging the coil spring 60 described below. The piston 53 and the cylinder 55 are both hollow cylindrical, and the diameter of the piston 53 is smaller than the diameter of the cylinder 55 so that the piston 53 can be accommodated in the cylinder 55. The lower end of the cylinder 55 is formed to have a small width, and the lower end thereof has an introduction pipe 57.
Is extended.

The cap 54 fixes the upper end of the cylinder 55 and has a packing 61 on the back surface thereof to prevent the contents from leaking, for example, when the dispenser 50 is turned upside down. A pressed member 59 is provided at the lower end of the piston 53, and a coil spring 60 (made of PP) as a spiral elastic body can be fitted on the cylinder 55 on the back surface thereof. The piston 5 on the surface
On the third side, the piston 53 is formed in a hollow cylindrical shape having the same diameter as that of the piston 53, and has two suction holes 67. The upper end of the suction hole 67 is fitted with the pressing member 62 at the lower end of the piston 53.
A fastener 58 that moves up and down between the cylinder 55 and the pressed member 59 is provided slightly below the space of the pressing member 62.

Before the head 51 is pressed down, the pressing member 62 is in contact with the lower end of the projecting opening 68 of the holder 56. Below the cylinder 55, a cylindrical inlet 63 is fixedly provided with the coil spring 60, and a ball valve 64 (made of PP), which is a check valve utilizing gravity, is loosely fitted. A passage for passing the gas passes through from the introduction pipe 57 to the lower end of the inner wall of the cylinder 55.

On the other hand, the piston 53 has a head 5 at the upper end.
1 The content flow path inside the piston 53 communicates with the tip of the extraction nozzle 52 attached to the head 51. Next, a usage example of the dispenser 51 configured as described above will be described. When extracting the contents in the container body (not shown) to the outside, first, the head 5
Press 1 down. Next, when the force for pushing down the head 51 is released, the piston 5 pushed down with the head 51 is released.
3 rises to a position before being pushed down by the restoring force of the coil spring 60. With the rise of the piston 53,
The pressure in the space 70 partitioned by the cylinder 55, the pressed member 59, and the ball valve 64 decreases due to the increase in volume, so that the ball valve 64 separates from the valve seat 66, and the contents pass through the introduction path. It is sucked into the space 70 of the cylinder 55. When the head 51 is pushed down again to lower the piston 53 which has returned to the original position, the pressing member 62
First, the pressed member 59 is pressed down, and then comes into contact with the fastener 58 and separates from the projecting opening 68 with which the lower end is in contact. Next, the pressed member 59 is pushed down together with the fastener 58 to compress the coil spring 60. Then, fastener 5
8 and the pressed member 59, a gap is provided by the distance until the pressing member 62 contacts the fastener 58, so that the contents filled in the space 70 of the cylinder 55
The compressed air in the space 70 is sucked into the piston 53 through the path indicated by the arrow in FIG.

Then, when the force for pushing down the head 51 is released, the pressed member 59 is pushed up by the restoring force of the coil spring 60, and the piston 53 is moved to the pressed member 5.
The pressing member 62 abutting on 9 contacts the lower end of the projection 68 and rises until it stops. At this time, the pressed member 59
The stopper 58 separated from the pressing member 62 due to the rise of the contact member comes into contact with the pressed member 59 pressed by the coil spring 60, thereby closing the suction path of the contents. In this manner, the dispenser 50 can intermittently push down the head 51 and repeatedly move the piston 53 up and down, thereby intermittently extracting the contents to the outside.

When the dispenser 50 is not used, the head 51 is pushed down, and the head 51 is rotated in a fixed direction over several turns, so that the cutting screw 71 is cut into the groove 72.
It can be stored in a state where it is fitted to. As described above, other embodiments of the dispenser have been described. However, by adopting various aspects of the dispenser 10 used in the liquid extraction container 1 of the present embodiment, the same effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a configuration of a liquid extraction container according to an embodiment.

FIG. 2 is a longitudinal sectional view illustrating a configuration and an example of use of a dispenser attached to a container body.

FIG. 3 is a longitudinal sectional view showing another configuration of the dispenser.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Liquid extraction container, 10, 50 ... Dispenser, 11,
51 ... head, 12, 52 ... extraction nozzle, 13, 53 ...
Piston, 14, 54 ... cap, 15, 55 ... cylinder, 20, 60 ... coil spring, 40 ... container body, 41 ...
Openings, 29, 64: Ball valve, 56: Holder, 58: Fastener, 59: Depressed member, 62: Pressed member, 68: Projecting port.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E084 AA05 AA06 AA12 AB01 BA02 DA01 DB12 FA09 GB01 GB12 GB14 KB01 LB02 LC01 LC06 LD22 LD26

Claims (2)

[Claims] 1. A container body formed of a thin flexible sheet material and having an opening at an upper portion, an operation head capable of moving up and down, and an elastic body for urging the head upward. A dispenser that is attached to the opening of the container main body and pumps the contents of the container main body when the head is pressed down, and is used by fixing the opening of the container main body to a predetermined frame. A liquid extraction container, wherein at least the surface of the elastic body of the dispenser and the sheet material forming the container main body are formed of a synthetic resin having excellent chemical resistance. Or a liquid extraction container filled with a perm. 2. The liquid extraction container according to claim 1, wherein the elastic body is formed by coating a surface of a metal coil spring with a synthetic resin having excellent chemical resistance.