JPH03188961A - fluid discharge container - Google Patents

Abstract

PURPOSE:To make the vessel excellent in the mechanical characteristics, barrier properties and resistance to physical properties of contents by forming an elastic cylindrical body having an elastic layer and a protective layer by a mold forming method and providing a valve which performs opening and closing of a discharge flow path of fluid to one end of the elastic cylindrical body and providing a sealing member to the other end thereof. CONSTITUTION:The vessel is constituted of both an elastic cylindrical body 80 which provides the stop valve 2 of discharged fluid becoming the discharge port of fluid P to the upper end and a sealing member 90 provided to the bottom part of the elastic cylindrical body. This elastic cylindrical body 80 is formed of both an elastic layer 81 such as natural rubber excellent in the mechanical characteristics and a protective layer 85 such as butyl rubber excellent in barrier properties and resistance to physical properties of contents which is provided to the inner face side. Fluid F is packed in the inner cavity part of the elastic cylindrical body 80. fluid F is always pressed by the elastic restoring force of this elastic cylindrical body 80 and discharged by opening the valve 2. Therefore the vessel is made excellent in the mechanical properties and also excellent in barrier properties and resistance to physical properties of contents when the fluid F is preserved for a long period.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a fluid discharge container, and in particular, a cylindrical container having an elastic force is filled with fluid, and the fluid is discharged by the contraction force of the container. The present invention relates to a fluid discharge container adapted to discharge.

[Conventional technology]

Conventionally, it is well known that fluorinated hydrocarbons such as Freon are used as a discharge force for applying pressure inside a container such as a so-called spray container to quantitatively release the fluid contents.

However, the use of freon has become a social problem because it destroys the ozone layer in the upper atmosphere and worsens the living environment. The use of Freon in aerosol cans is already prohibited in the United States, and there is a trend worldwide to refrain from using Freon.

Therefore, there has been a demand for the development of a container that can discharge fluid within the container without using the discharge force of Freon.

Under these circumstances, the applicant has already filed the Utility Application No. 63
No. 148,258 and the like propose a fluid discharge container that utilizes the contraction force of an elastic container such as rubber.

[Problem to be solved by the invention]

However, rubber containers made of natural rubber or the like, which have excellent mechanical properties such as elongation and elasticity, generally have low barrier properties and resistance to contents, and usually suffer from the following disadvantages.

That is, (1) If the contents include perfume or the like, the perfume will diffuse out of the rubber container. ■Depending on the contents, there are problems such as deterioration of the rubber container that comes into direct contact with it.

On the other hand, butyl rubber is a rubber material that has relatively good barrier properties and content resistance, but this material has poor mechanical strength and cannot be put to practical use.

The present invention has been devised in view of the above-mentioned circumstances, and its purpose is to solve the above-mentioned problems, provide excellent mechanical properties, and, in particular, improve barrier properties and contents resistance, etc. To provide a container equipped with an elastic container that has excellent barrier properties during long-term storage and is excellent in suppressing material deterioration of the rubber container.

[Means to solve the problem]

The present invention relates to an elastic cylindrical body having an elastic layer and a protective layer formed by a molding method, a valve provided at one end of the elastic cylindrical body to open and close a fluid discharge channel, and a valve for opening and closing a fluid discharge channel; and a sealing member provided to seal the other end of the cylindrical body.

[Effect]

The fluid filled in a container mainly made of an elastic cylindrical body is
It is constantly under pressure due to the elastic force of the elastic cylindrical body.
Manually pushing an actuator on the top of the container opens the stem hole and releases fluid from the nozzle hole of the valve.

The elastic container used in the present invention has an elastic layer with excellent mechanical properties and a protective layer with excellent barrier properties and content resistance, so it has excellent mechanical properties and
It has excellent barrier properties when storing contents for a long period of time, and is also excellent in suppressing material deterioration of the elastic container.

〔Example〕

Hereinafter, a fluid discharge container (hereinafter simply referred to as a container 1) according to the present invention will be described.
An embodiment of the present invention will be described with reference to FIGS. 1 to 3.

FIG. 1 shows a vertical cross-sectional view of the container 1 filled with fluid.

In this figure, the container of the present invention includes a valve 2 that serves as a fluid discharge port and opens and closes a discharge fluid path, and an elastic cylindrical body 80 that is provided in direct or indirect communication with the valve 2.
and a sealing member 90 provided at the bottom of the elastic cylindrical body 80.
It is equipped with

The valve 2 may be one that can arbitrarily release a predetermined amount of the fluid F stored in the elastic cylindrical body 80, and in particular,
Its structure is not limited, and various known valves may be used.

Specifically, for example, a valve 2 as shown in detail in FIG. 2 is used. According to this, the valve 2 includes a stem 2 having a stem hole 2a for opening and closing the valve, a housing 4 that accommodates a part of the stem 2 and a spring 7, and a metal structure fixed to the housing 4. A mountain cap 3, a stem rubber 5 that serves as a seal between the mountain cap 3, the housing 4, and the stem hole 2a.
It has a shape having the following.

When the valve is in the closed state, the stem hole 2
a is sealed by the stem rubber 5, but -
Once an actuator (not shown) is pressed down, the stem hole 2a is lowered, the stem hole 2a opens away from the stem rubber 5, and the fluid F inside the elastic cylindrical body is released.

As shown in FIG.
The oil part of Mountain Cap 3 is bent and crimped to secure it. Furthermore, one end of an elastic cylindrical body 80 (described later) is inserted into the outer peripheral surface of the cylindrical portion 70b of the sleeve 70, and a fastener 5 such as a metal winding is inserted into the outer peripheral surface of the elastic cylindrical body 80.
0 is fixed to prevent the sleeve 70 and the elastic cylindrical body 80 from coming off due to the internal pressure of the container.

Such an elastic cylindrical body 80 has a certain degree of strength and elasticity, and as shown in FIG. The protective layer 85 has excellent resistance to contents. The fluid F is stored in the inner cavity of the elastic cylindrical body 80, and the fluid F can be constantly pressed by the elastic restoring force of the elastic cylindrical body 80.

The elastic layer 81 is made of a material with excellent mechanical properties, such as a rubber material such as natural rubber or isoprene rubber.

The protective layer 85 is formed on the inner surface of the elastic layer 81 as described above.

As this protective layer 85, butyl rubber, silicone rubber, ethylene propylene rubber, etc. are used.

Examples of the above molding method include laminate extrusion using two extrusion molding machines.

Note that the protective layer 85 is preferably formed to cover the entire inner circumferential surface of the elastic layer 81 .

By using such a molding method, productivity can be improved and adhesive strength between layers can be increased.

The protective layer 85 described above is usually provided directly on the inner circumferential surface of the elastic layer 81, but an intermediate layer may be interposed therebetween. Furthermore, various protective layers can be provided on the outer peripheral surface of the elastic layer 81.

A cylindrical sealing member 90 serving as a bottom lid of the container is fitted inside the other end (lower end) of the elastic cylindrical body 80.
A fastener 55 such as a metal winding is fixed to the outer peripheral surface of the elastic cylindrical body 80 at that portion, and the sealing member 90 and the elastic cylindrical body 80 are connected to each other.
and are prevented from coming off due to the internal pressure of the container. Note that FIG. 3 shows a state before the inside of the container including the elastic cylindrical body 80 is filled with the fluid F.

The operation of the container 1 according to the present invention will be explained.

As shown in FIG. 1, the fluid F filled in the container including the elastic cylindrical body 80 is always under pressure due to the elastic force of the elastic cylindrical body 80. When an actuator (not shown) is manually pushed, fluid is discharged from a nozzle hole of a valve (not shown).

In the above embodiment, the elastic cylindrical body 80 and the valve 2 are connected via the sleeve 70 by a so-called caulking method, but the invention is not limited to this, and a screwing method using a cap or the like may be used. You can also do it with Furthermore, a protective container may be provided to surround the elastic cylindrical body 80.

〔Effect of the invention〕

The elastic cylindrical body used in the fluid discharge container of the present invention has an elastic layer with excellent mechanical properties and a protective layer with excellent barrier properties and content resistance. , has excellent barrier properties when storing contents for a long period of time, and is also excellent in suppressing material deterioration of the elastic container. Also, productivity is good.

[Brief explanation of drawings]

1 and 3 are longitudinal sectional views of a fluid discharge container according to the present invention, and FIG. 2 is a longitudinal sectional view showing an example of a valve. DESCRIPTION OF SYMBOLS 1... Fluid discharge container, 2... Valve, 80... Elastic cylindrical body, 81... Elastic layer, 85... Protective layer, 90
...Sealing member. 448-449

Claims (1)

[Scope of Claims] An elastic cylindrical body having an elastic layer and a protective layer formed by molding, a valve provided at one end of the elastic cylindrical body to open and close a fluid discharge channel; and a sealing member provided to seal the other end of the elastic cylindrical body.