JP3755671B2 - Pressure distribution method and apparatus therefor - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a pressure distribution method in which products such as cosmetics and paints are housed in a container together with a pressure agent, and the product is taken out by the internal pressure of the pressure agent by operating a distribution valve attached to the container mouth. Relates to the device.
[0002]
[Prior art]
Conventionally, products such as liquid, foam or powdery cosmetics, paint, etc. are stored in a container together with a pressure agent, and the product is taken out by the internal pressure of the pressure agent by operating a distribution valve attached to the container mouth. Such pressure dispensers are known.
[0003]
In addition, an inner bag or an inner container containing the product is provided inside the container, and liquefied gas or compressed gas is filled between the outer container and the inner container as a pressurizing agent. In addition, a pressure dispensing apparatus for taking out a product is also known and widely used.
[0004]
Such a so-called double-structure aerosol container can discharge even a product having a relatively high viscosity, and the remaining undischarged remaining amount is not discharged into the container even when it is used up. Few.
[0005]
Further, in the above-mentioned container, there is a possibility that only the pressurizing agent is discharged and the product cannot be discharged to the end, so the dischargeable state is usually either upright or inverted, and the state of use is There was a problem that it was quite limited. On the other hand, in the case of such a double structure container, since the pressurizing agent is separated from the product and gas is not discharged in normal use, there is an advantage that the container can be discharged in any direction. is there.
[0006]
However, in order to make such a double-structure aerosol container function, it is necessary to introduce a pressurizing agent to the outside of the inner bag. For this purpose, an injection valve for the pressurizing agent is provided on the bottom of the container. It is necessary to take measures such as. In addition, in order to fill this, it is necessary to provide a dedicated filling facility corresponding to this injection valve, which eventually increases the cost of the apparatus and complicates the process of introducing the pressure agent and the product into the container. There was a problem.
[0007]
In addition, a flexible inner bag that allows permeation of the gaseous pressurizing agent is placed inside the container, and the product is stored in a partitioned state in the inner bag, and the pressure of the pressurizing agent is controlled inside and outside the inner bag. There is known a pressurizing / dispensing device in which a product in an inner bag is balanced and a product is taken out by operating a distributing valve, and is disclosed in, for example, Japanese Patent Application Laid-Open No. 5-254579.
[0008]
Also in this device, a space for introducing a pressurizing agent is provided outside the inner bag as in the double-structured container, and the pressurizing agent is introduced into this space. , Introduced into the space between the inner bag and the container, and allows the pressure agent to permeate from the outside of the inner bag toward the inside of the inner bag. The pressure inside and outside is balanced by the permeation of the pressurizing agent introduced from the outside to the inside of the inner bag.
[0009]
The disadvantage of this known device is that an injection valve for introducing a pressurizing agent outside the inner bag needs to be provided at the bottom of the container. The presence of such valves inevitably makes the device expensive and complicates the process of introducing the pressure agent and product into the container. For containers without an injection valve, the pressure agent is liquefied and introduced at a low temperature, and the container is kept at a low temperature so that the pressure agent liquefaction state is maintained until the introduction of the product into the inner bag is completed. Must be kept in.
[0010]
Furthermore, in the conventionally known apparatus for introducing the pressurizing agent to the outside of the inner bag, there is a drawback that the space for storing the product is reduced by the space for introducing the pressurizing agent.
[0011]
[ Problems to be solved by the invention ]
This invention does not introduce the pressurizing agent outside the inner bag, but introduces the pressurizing agent together with the product into the inner bag , and moves the pressurizing agent after passing through the inner bag to the outside. A pressurizing method and apparatus capable of discharging a product by compressing a flexible inner bag with the pressure of a pressurizing agent existing outside the inner bag while allowing the product to be filled very easily It is to be provided.
[0012]
[Means for Solving the Problems]
In order to solve the above problems, the means adopted by this invention, the container body (1) inside the inner bag (8) a container body having flexibility made of a single material thickness 10-500 microns ( 8 ) After the mouth is aligned and placed in close contact with the inner surface of the inner bag (8), the inner bag (8) is filled with the product, and then the distribution valve (3) is attached to the mouth of the container body (1). introducing a gaseous pressurizing pressure agent in the inner bag (8) in through the dispensing valve (3), pressurizing the inner bag (8) from the outside by transmitting from the inside to the outside of the inner bag of the pressurized pressure agent Then, the inner bag is compressed, and the filled product is discharged through the distribution valve (3).
[0013]
A distribution valve (3) is attached to the mouth of the container body (1), and the inner bag (8) is placed in the container body (1) in close contact with the inner surface of the container body (1). 8) The product is introduced and stored together with the gaseous pressure agent in the inside, and the inner bag (8) is made of a single material having a thickness of 10 to 500 microns that can permeate the pressure agent, and is flexible. the has, in a pressurized dispensing device, characterized in that the inner bag by transmitting to the outside and to pressurize the inner bag (8) only pressurized pressure agent of the inner bag (8) within which is filled is there.
[0015]
Furthermore, the pressurizing agent is composed of one or more of liquefied propane gas, dimethyl ether and chlorofluorocarbon, and the inner bag (8) is permeable to the pressurizing agent.
[0016]
Furthermore, the inner bag (8) is made of a single resin material such as polyethylene, polypropylene, or polyethylene terephthalate, and is capable of being deformed and contracted by a pressure agent.
[0017]
Furthermore, the distribution valve (3) is provided with a dipping tube (7) extending toward the inner bottom of the container body (1).
[0018]
Further, the inner bag (8) has a thickness of 350 microns or less.
[0019]
[Action]
A flexible inner bag that allows permeation of only the pressurizing agent is attached to the mouth portion of the container to which the distribution valve is attached, and the pressurizing agent and the product are introduced into the inner bag. The inner bag is positioned in close contact with the inner surface of the container, and the pressure agent that passes through the inner bag and enters between the container and the inner bag compresses the inner bag, and the product is discharged. Since the inner bag shrinks as the product decreases, even when the container is tilted sideways, the product is present at the mouth of the container or at the opening of the dipping tube as shown in FIG. Or only the pressurizing agent is not ejected. The thickness of the inner bag is preferably 10 to 500 microns. If the inner bag is thinner than 10 microns, the inner bag has insufficient mechanical strength. It may not be sufficiently compressed, or the gas permeation rate may be slow, and it may take a considerable amount of time to obtain the necessary and sufficient pressure.
[0020]
Regarding the difference in the material of the inner bag, for example, when LDPE was used, the thickness was good around 40 microns, PP was 20-30 microns, and PET was 10-15 microns.
[0021]
【The invention's effect】
According to the present invention, it is easy to attach the inner bag to the container and to introduce the pressurizing agent and the product, so that the manufacturing cost can be reduced, and the discharge of the product or the ejection of only the pressurizing agent occurs. The fear is reduced.
[0022]
【Example】
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the figure, (1) is a container body, and the mouth (2) is sealed with a cover plate (4) to which a distribution valve (3) is attached. The container body (1) is made of a metal such as aluminum, tinplate, iron, or a synthetic resin and has a pressure resistant structure. The container body (1) may be provided with a discharge valve for discharging the pressurizing agent after use, if necessary. The distribution valve (3) may be any valve that can open and discharge the product when operating the handle (6) attached to the stem (5) extending to the outside. Is not limited. The handle (6) preferably doubles as a discharge nozzle. The distribution valve (3) includes a dipping tube (7) extending toward the inner bottom of the container body (1) when the container is intended for upright use. (7) is unnecessary.
[0023]
(8) is an inner bag attached to the container body (1), which is a bag made of a single material having a thickness of 10 to 500 microns that allows permeation of the pressurizing agent. Have. The thickness of the inner bag (8) is preferably 400 microns or less, and more particularly in the range of 10 to 350 microns. The inner bag (8) is fixed with its mouth sealed to the mouth of the container body (1) and is in close contact with the inner surface of the container body (1). The mouth seal of the inner bag (8) is sandwiched between the lid plate (4) and the container mouth when the lid (4) is wound and secured to the mouth of the container body (1) as shown in the figure. However, it can be fixed to the housing of the distribution valve (3) and sealed, or it can be bonded to the packing (9) sandwiched between the distribution valve (3) and the container body (1) and sealed. You may do it. The inner bag (8) may be formed as a release layer on the inner surface of the container body (1). The inner bag (8) must be capable of permeating the liquefied propane gas, dimethyl ether, chlorofluorocarbon, and the like, which are pressurizing agents, and does not permeate the product and is not affected by the product. For example, it is made of a single material having a thickness of 10 to 500 microns, such as polyethylene, polypropylene, polyethylene terephthalate, etc., and does not self-shrink, and is flexible to deform and shrink as the product is reduced and to completely discharge the contents.
[0024]
The product is introduced into the inner bag (8) together with the pressurizing agent. The products to be introduced are liquid or powdery articles such as cosmetics, paints, and drugs, and can be applied to all products conventionally distributed by this type of device. The introduced pressurizing agent passes through the inner bag (8) and enters between the inner bag (8) and the container body (1), and the pressure inside and outside is balanced. The product is discharged by operating the distribution valve (3), and the inner bag (8) is deformed and contracted as shown in FIG.
[0025]
With reference to FIG. 4, an example of the manufacturing process of the distribution device will be described. First, after the inner bag (8) is disposed in the container body (1) with the mouth open (FIG. 4a ), the product is filled into the inner bag (8) through the mouth. (Fig. 4b ). Next, the distribution valve (3) is attached to the mouth of the container body (1) (FIG. 4c ). Thereafter, a pressure agent is filled into the inner bag (8) through the distribution valve (3) (FIG. 4d ). The filled pressure agent passes through the inner bag (8), enters between the inner bag (8) and the container body (1), and compresses the inner bag (8) from the outside (FIG. 4e ). .
[0026]
As shown in FIG. 3, even when the container body (1) is tilted sideways, the distribution valve (3) or the dipping tube (7) is below the level of the product (9) due to deformation and contraction of the inner bag (8). Therefore, there is no possibility that the ejection becomes impossible or only the pressurizing agent is ejected. Conventionally, as shown in FIG. 5, when the amount of the product (9) decreases, the distribution valve (3) or the dipping tube (7) is positioned above the level of the product (9). There was a problem that the product could not be discharged or only the pressure agent was ejected.
[0022]
Even if the product to be filled has a relatively high viscosity and easily adheres to the inner wall of the container, by using this mechanism container, the inner bag is deformed and contracted by the pressure generated on the outside at the end of use. The product can be extruded and discharged almost completely without remaining. The container of the present invention realizes such characteristics easily and at a relatively low cost.
[Brief description of the drawings]
FIG. 1 is a longitudinal cross-sectional view. FIG. 2 is a longitudinal cross-sectional view when in use. FIG. 3 is a longitudinal cross-sectional view when it is overturned. FIG. 4 is a process diagram showing a manufacturing process of a distributor according to the present invention. The same figure as Fig. 3
(1) Container body
(2) Mouth
(3) Distribution valve
(4) Cover plate
(5) Stem
(6) Handle
(7) Dipping tube
(8) Inner bag
(9) Products

Claims (8)

Inside the container body (1), a flexible inner bag (8) made of a single material having a thickness of 10 to 500 microns is arranged in close contact with the inner surface of the container body ( 1 ). After that, the product is filled in the inner bag (8), and then a distribution valve (3) is attached to the mouth of the container body (1), and the gas is put into the inner bag (8) through the distribution valve (3). A pressure agent in the form of a gas is introduced, the pressure agent is permeated from the inside to the outside of the inner bag, the inner bag (8) is pressurized from the outside to compress the inner bag, and the filled product is dispensed with a dispensing valve ( 3. A pressure distribution method, characterized in that the liquid is discharged via 3). Pressurizing pressure agent, liquefied propane gas, dimethyl ether, made from either or chlorofluorocarbon, a method of pressurizing distributor according to claim 1, characterized in that the inner bag (8) Yoko pressurized pressure agent is freely permeable . The pressure distribution method according to claim 1 or 2, wherein the inner bag (8) is made of a single resin material selected from polyethylene, polypropylene and polyethylene terephthalate, and is deformable and shrinkable by a pressure agent. . 2. Pressure distribution method according to claim 1, characterized in that the distribution valve (3) comprises a dipping tube (7) extending towards the inner bottom of the container body (1).   A distribution valve (3) is attached to the mouth of the container body (1), and the inner bag (8) is disposed in the container body (1) in close contact with the inner surface of the container body (1). The product is introduced and stored together with the gaseous pressure agent, and the inner bag (8) is made of a single material having a thickness of 10 to 500 microns capable of allowing the pressure agent to permeate and has flexibility. A pressurizing and dispensing device characterized in that only the pressurizing agent in the filled inner bag (8) passes through the outer side of the inner bag (8) to pressurize the inner bag.   The pressurizing agent consists of one or more of liquefied propane gas, dimethyl ether, and chlorofluorocarbon. ( 8 ) 6. The pressure distribution apparatus according to claim 5, wherein said pressure agent is permeable.   Inner bag ( 8 ) 7. The pressure distribution device according to claim 5, wherein the pressure distribution device is made of a single resin material selected from polyethylene, polypropylene, and polyethylene terephthalate, and is deformable and shrinkable by a pressure agent.   Distribution valve ( 3 ) The container body ( 1 ) Dipping tube extending toward the inner bottom of the ( 7 ) The pressure distribution apparatus according to claim 5, comprising:

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