JPH0431279A - Spray container - Google Patents

Abstract

PURPOSE:To prevent content-collecting cavities from being produced in an inner bag member free from an elastic contraction and permit the contents to be sprayed out with none of them remaining in the inner bag member by a method wherein the frame members around which string member is wound are made extremely large in contracting force together with an outer bag member and the string member attempting to recover its contracting force. CONSTITUTION:A bag member 7 for filling contents therein has a frame member 8 and a string member 9 interposed between the outer peripheral surface of an inner bag member 71 and the inner peripheral surface of an outer bag member 72. The inner bag member 71 consists of a nonelastic film material, the outer bag member 72 consists of an elastic material such as rubber and the contents are sprayed out to the outside from the inner bag member 71 through a spray nozzle by filling the inner bag member 71 with the contents on the one hand and due to the recovering force of the outer bag member 72 on the other. The string members adapted to be wound around frame members 8 and 8' consist of an expansible and contractible material, capable of responding the expansion and contraction of the bag member 7 and the frame members 8 and 8' and of imparting a large contracting force, upon contraction, to the frame members 8 and 8' and the inner bag member 71, thereby spraying out contents with none of them remaining in the inner bag member.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a spray container, and more particularly to a spray container that can spray only the contents such as liquid without using fluorocarbon gas.

[Prior Art] Conventionally, in spray containers such as hair sprays and digestive organs, Freon gas, which has no effect on the human body, has been frequently used as a spraying agent for the contents. However, in recent years, it has been recognized that the fluorocarbon gas spewed out along with the contents may destroy the ozone layer if released into the atmosphere, and its use has begun to be regulated. On the other hand, propane gas and the like have a problem in that they have strong twisting properties and are difficult to use at high temperatures.

Therefore, it has been desired to develop a spray container that can spray the contents without using this CFC gas. As a means of achieving this, we are currently developing pressurized gas to replace fluorocarbon gas.
Spray containers that do not use gas pressure at all are being actively developed, but the former has not yet reached the stage of practical use.6 On the other hand, the latter spray containers include, for example:
Inside the outer body, there is a double-layered elastic member consisting of an inner elastic member with excellent chemical resistance and airtightness, and an outer elastic member with high elasticity that is installed in parallel with the inner elastic member. There is something set up. That is, the inner elastic member is filled with content and the content is atomized using the contraction force of the outer elastic member.

[Problems to be Solved by the Invention] However, according to such a spray container, since the inner bag member is also made of an elastic material, when the inner elastic member expands due to filling with contents, the density of the member becomes coarse. There is a risk that the contents may pass through the inner elastic member and flow out of the inner elastic member.

As a means to solve this problem, it is conceivable to construct the bag member disposed inside from a material that does not have elastic force, but in this case, the bag member must be formed larger so that it can expand. It is necessary to do so.

However, with such a configuration, when the outer bag member made of an elastic material contracts, wrinkles occur in the inner bag member, and the contents accumulate in the depressions formed by the wrinkles, making it impossible to spray to the end. There is a risk of 6. There is a limit to reducing the amount of leftover contents using only the elastic force of the outer bag member.

The present invention was made to solve such problems,
The inner bag member is made of a material that does not elastically contract, and even if the outer bag member contracts and creases occur in the inner bag member, the creases do not create depressions in which the contents accumulate.
It is an object of the present invention to provide a spray container with a novel structure that can spray and discharge contents without leaving any residue.

[Means for Solving the Problems] In order to achieve the above-mentioned objects, the spray container of the present invention includes a spray nozzle having a nozzle opening/closing mechanism connected to the upper end opening of the container body, and communicating with the spray nozzle. A spray container having a bag member for filling contents connected to each other and disposed within the container body, wherein the bag member is comprised of an inner bag member made of a non-elastic material, and an inner bag member made of an elastic material; an outer bag member disposed so as to enclose the inner bag member, and for spraying the contents of the inner bag member to the outside of the device from the spray nozzle using its elastic restoring force; In the gap formed by the outer peripheral surface and the inner peripheral surface of the outer bag member, a flexible frame member whose shape changes as the inner bag member and outer bag member expand and contract, and a periphery of the frame member. It is characterized by disposing a string member having elasticity that is wound around the belt.

[Function] In this configuration, first, the spray container is connected to a filling machine for filling contents such as a drug solution, and a predetermined amount of the contents is filled into the container body. The contents are filled into the inner bag member through the flow path of the spray nozzle against the elastic force of the outer bag member. At this time, as the inner bag member expands, the frame member is pressed by the inner bag member and its shape changes. In addition, the string member also stretches accordingly.

On the other hand, when the nozzle opening/closing mechanism is opened, the outer bag member and the string member try to contract and return to their original shape, so the inner bag member is pressed by this and the contents pass through the flow path of the spray nozzle. The spray is discharged from the spray nozzle.

At this time, the frame member is pressed so that the inner space of the frame member contracts by the outer bag member and the string member that is about to return to its contracted state. The inner bag member is held between each of the rib members constituting the frame member and is contracted so as to be folded along the rib members. Therefore, unnecessary wrinkles or dents do not occur in the inner bag member. Also, since the string member is wound, the shrinkage force is extremely large.

[Example] Hereinafter, the spray container of the present invention will be described in more detail based on the example shown in the drawings. FIGS. 1 and 2 show an embodiment of the present invention, where l is a spray container. This spray container l includes a container body 2, a lid member 3, a spray nozzle 4,
It is comprised of a bag member 7, a frame member 8, a string member 9, and the like.

The container body 2 is formed into a bottomed cylindrical shape with an open upper end. Since injection gas such as fluorocarbon gas is not mixed and sealed, there is no particular limitation, and various materials such as metals and synthetic resins can be used.

A sealing lid member 3 is fixed to the upper end opening 2a of the container body 2.

The spray nozzle 4 is provided with a content flow channel 4a and a spray port 4b formed by tapering the tip of the flow channel 4a. The content flow path 4a of the spray nozzle 4 is communicated with a through hole 3a provided in the lid member 3.

In this embodiment, a spacer 5 that holds the base of a bag member 7, which will be described later, is disposed below the lid member 3 in the neck 2b of the container body 2, so that the fluid passage hole formed in the spacer 5 5a is communicated with the through hole 3a.

Further, the spray nozzle 4 includes a pressing portion IO and a pressing portion IO.
A nozzle opening/closing mechanism is provided, which includes a valve rod 11 attached to the valve rod 11, a valve body 12 fixed to the tip of the valve rod 11, and a return spring 13. 14 is a sealing O-ring.

Reference numeral 7 denotes a bag member for filling the contents, and is composed of an inner bag member 71 and an outer bag member 72. Moreover, the inner bag member 7
A frame member 8 and a string member 9 are interposed between the outer peripheral surface of the outer bag member 1 and the inner peripheral surface of the outer bag member 72.

The inner bag member 71 is made of a film material that has excellent chemical resistance and pressure resistance, and is made of an inelastic material. Moreover, it has a size that can expand and form a predetermined internal space when filled with contents, and when the contents are not filled as shown in FIG. It is stored in a foldable manner. Note that, as in this embodiment, the inner bag member 71 itself may be made of a chemical-resistant film, or the film material may be coated with a chemical-resistant material.

The outer bag member 72 is made of an elastic material such as rubber, and is disposed such that its inner peripheral surface surrounds the inner bag member 71 with a predetermined gap from the outer peripheral surface of the inner bag member 71.

That is, while the inner bag member 71 is filled with the contents against the elastic force of the outer bag member 72, the contents are transferred from the inner bag member 71 to the spray nozzle due to the return force of the outer bag member 72. It has a structure that prevents it from being discharged to the outside through.

The frame member 8 is disposed in a gap formed by the outer peripheral surface of the inner bag member 71 and the inner peripheral surface of the outer bag member 72. Examples of the frame member 8 include those shown in FIG. In other words, a plurality of flexible rod-shaped bone members 8a made of synthetic resin, metal, etc. and having a substantially circular cross section are arranged in parallel;
At least near the upper end and near the lower end of the bone members 8a are interconnected by a flexible connecting member 8b such as a string member or a ring-shaped rubber member. Note that the upper and lower ends of the bone member 8a are provided with bent portions bent into an appropriate shape, or through holes are provided in the bone member 8a at these portions, and connecting members are inserted into the bent portions and through holes. It is preferable to have a structure in which the bone member 8b is locked so that it does not easily separate from the bone member 8a.

Therefore, when this frame member 8 is not filled with contents, the bone members 88 are in close contact with each other and there is almost no space inside, as shown in FIG. 3(a). When the bag member 71 is inflated, as shown in FIG.
As shown in b), the inner bag member 71 is deformed into a substantially cylindrical shape with a swollen central portion along the external shape.

In this case, as shown in FIG. 5, it is preferable to use a frame member 8° in which the cross-sectional shape of the bone member 8'0 is approximately triangular. This is because the gap created at the center of the frame member 8 is extremely small compared to the frame member 8. Furthermore, in order to accommodate the portion of the inner bag member 71 that is invaginated between the rib members 88, it is preferable that the rib members 8a, 8°a are formed with an appropriate diameter.

Note that it is preferable that the inner bag member 71 described above is formed with creases formed at predetermined portions. This is because if the frame members 8.8° of the frame members 8a, 8°a are arranged so as to abut on such a folded portion, the frame members will surely bend along the folded line, and unnecessary wrinkles will not occur.

Further, the bag member 7 has an upper end base 71a.

72a is connected to the inner peripheral surface of the neck 2b of the container body 2 and the spacer 5.
It is suspended and supported by being clamped between. A sealing gasket 6 is disposed between the upper end of the bag member 7 and the lid member 3.

The string member 9 is arranged so as to be wound around the frame member 8.8°. This string member 9 is made of an elastic material and can accommodate expansion and contraction of the bag member 7 and the frame member 8.8°, and also expands and contracts at an angle of 8.8° relative to the frame member 8.8° and the inner bag member 71 when contracted.

It provides a strong contraction force and can be sprayed without leaving any contents behind.

As a material constituting the string member 9, for example, an elastic rubber material can be mentioned. It may have any shape, but in order to be able to wrap it around the frame member 8 etc. without any gaps and to increase the tightening force, a flat shape with a substantially square cross section as shown in Figure 6(a) is used. It is preferable to use Further, as shown in FIG. 6(b), it is preferable to provide toothed portions 9a on both surfaces at a predetermined pitch along the elongated direction. When the string members 9 are partially overlapped and wound, the toothed portions 98 mesh with each other, and even if the shape of the frame member 8 or the like changes, there will be no slipping and positional displacement.

Further, as the string member 9, a resin having shape memory properties (hereinafter simply referred to as "shape memory resin") can also be used. As the shape memory resin, norbornene resin, transisoprene resin, polyurethane resin, etc. can be used.

The string member 9 made of such shape memory resin is attached to the frame member 8.
When winding the wire, proceed as follows. First, a shape memory resin whose contracted state is memorized is wrapped around the inner bag member 71 when the inner bag member 71 is not filled with the contents. Next, the contents are filled, and at this time, the work is carried out in an atmosphere at a predetermined temperature, and the shape memory resin is kept in a deformable state. As a result, as the inner bag member 71 and the frame member 8 expand, the string member 9 is also stretched.

The spray container 1 of this embodiment having such a configuration is used as follows.

First, when filling contents such as chemical liquid, connect the spray port 4b of the spray container l to an arbitrary filling machine (not shown),
Fill the inside with a chemical solution, etc. As a result, as shown in FIG. Flow into space. The inner bag member 71 expands against the elastic force of the outer bag member 72.

As the frame member 8 expands, the distance between the bone members 8a gradually increases as shown in FIGS. 4(a) to 4(c). When the inner bag member 71 is inflated, the inner bag member 71 is expanded as shown in FIGS. 2 and 3(b).
According to the shape of No. 1, it is approximately cylindrical.

The string member 9 made of rubber material will expand as the frame member 8 expands. On the other hand, when the string member 9 is made of shape memory resin, as described above, by performing the filling operation under a predetermined temperature atmosphere, it becomes free to deform and is stretched.

When the filling machine is removed, the pressing force on the valve body 12 is released, so the valve body 12 closes and the contents are hermetically held within the container body 2.

In this state, when the press part 10 of the spray nozzle 4 is pressed, the valve body 12 is pressed through the valve stem 11 and the valve is opened. Since the outer bag member 72 of the bag member 7 and the string member 9 made of an elastic rubber material are always trying to contract and return, the inner bag member 71 is pressed via the frame member 8 and the contents are The liquid is ejected from the spray port 4b formed at the tip of the spray nozzle 4 through the fluid passage hole 5a of the spacer 5, the through hole 3a of the lid member 3, and the content flow channel 4a of the spray nozzle 4.

At this time, the frame member 8 is pressed by the outer bag member 72 and the string member 9 and contracts the inner bag member 71, but the inner bag member 71 contracts so as to invaginate between the bone members 8a. (See Figures 4(a) and 4(b)). Then, in the end, each adjacent bone member 8a comes into close contact with each other via the inner bag member 71 (see FIG. 4(a)).
), unnecessary wrinkles will not occur and the contents will not remain in the spaces formed by the wrinkles.

Moreover, the contraction force of the string member 9 works (so that the outer bag member 72
At the same time, strong tightening of the inner bag member 71 works to prevent the contents from remaining.

Furthermore, by using the frame member 8° having the bone member 8°a having a substantially triangular cross section, the gap created at the center of the frame member 8° in the final stage of contraction can be made extremely small.
The residual contents can be reduced more than in the frame member 8 (see FIG. 5).

Here, when the string member 9 is made of shape memory resin, the contents can be sprayed and discharged as follows.

That is, the spray container 1 is used under a predetermined temperature atmosphere. As a result, the string member 9 attempts to return to its contracted shape, which is the shape before deformation, and a predetermined tightening force acts on the frame member 8 and the like.

Note that the spray container of the present invention is not limited to the above-mentioned embodiments. For example, in the above embodiment, the spacer 5 and the packing 6 are arranged to sandwich the bag member 7, but a flange portion is provided at the upper end of the bag member 7, and the upper ends of the lid member 3 and the container body 2 are It is also possible to adopt a structure in which the flange portion is sandwiched and supported by the edges.

[Effects of the Invention] According to the spray container of the present invention, the contents can be easily and reliably sprayed without using fluorocarbon gas due to the expansion and return force of the bag member disposed within the container body.

Further, since the inner bag member is made of an inelastic material, the material density of the bag member does not become coarse due to expansion. Therefore, the contents will not leak out.

Moreover, since the bag member has a two-layer structure of an inner bag member and an outer bag member, and a frame member is disposed between the inner bag member and the outer bag member, the inner bag member can It is folded into a predetermined shape and contracts by the frame member, and no unnecessary dents are created due to wrinkles.

Furthermore, since the string member is wound around the frame member, force can be applied to tighten the string member, and the spray can be discharged to the end without leaving much of the contents.

Furthermore, since there is no need to vibrate the container before use, unlike spray containers using fluorocarbon gas, the container can be filled with industrially dangerous contents.

[Brief explanation of the drawing]

FIGS. 1 and 2 are cross-sectional views schematically showing an embodiment of the present invention, with FIG. 1 showing the state in which the contents are not filled, and FIG. 2 showing the state when the contents are filled. shows. FIG. 3 is a perspective view showing the frame member of the same embodiment, and FIG.
) shows the state when the contents are not filled, and FIG. 3(b) shows the state when the contents are filled. FIG. 4 is a schematic plan view for explaining that the positional relationship between the frame member and the inner bag member changes as the contents are filled, and FIG. 5 is a plan view showing another example of the frame member. It is. Figure 6 (
a) and (b) are perspective views showing aspects of the string member. ■... Spray container 2... Container body 3... Lid member 4... Spray nozzle 7... Bag member 71... ...Inner bag member 72...Outer bag member 8.8°...Frame member 8a, 8°a...Bone member 8b, 8°b...・ Consolidated member 9 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・(b) Figure (C)

Claims (5)

[Claims] (1) A spray nozzle having a nozzle opening/closing mechanism connected to the upper end opening of the container body, and a bag member for filling contents that is communicatively connected to the spray nozzle and disposed within the container body; In the spray container, the bag member is made of an inner bag member made of a non-elastic material and an elastic material, and is arranged to wrap around the inner bag member, and the bag member is arranged so as to wrap around the inner bag member, and the inner bag member is made of an elastic material. an outer bag member for discharging the spray from the spray nozzle to the outside of the device by a return force, and in a gap formed by the outer circumferential surface of the inner bag member and the inner circumferential surface of the outer bag member,
A flexible frame member whose shape changes according to the expansion and contraction of the inner bag member and outer bag member, and an elastic string member wound around the frame member are provided. Features a spray container. (2) The spray container according to claim 1, wherein each bone member constituting the frame member has a substantially triangular cross-sectional shape. (3) The spray container according to claim 1 or 2, wherein the string member is made of a flat elastic rubber material. (4) The spray container according to claim 3, wherein both sides of the string member are formed with teeth that engage with each other when the string member is wound overlappingly. (5) The spray container according to claim 1 or 2, wherein the string member is made of a resin having shape memory properties.