JPS5984770A - Two chamber type filling vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a two-compartment filling container as defined in claim 11).

A two-compartment filling container of this type, commonly referred to as an aerosol cylinder or aerosol container, is used, for example, in German Patent Publication No. 2.6.
, 28,926.

In conventionally known two-compartment filling containers, the flexible container is usually made of synthetic resin or flexible metal and receives a volume corresponding to its contents in the empty state. Therefore, the inner container has a cavity and is not pressed together. This comes with some drawbacks. One is that the inner container must be introduced into the outer container through a normal, relatively narrow hole in the outer container, which is a limitation. In this case, only a relatively low degree of filling (the ratio of the filling volume to the total volume of the filling container) is obtained, and sufficient filling of the inner container leads to unacceptable stresses in its peripheral wall. Furthermore, the inner container always has some leakage volume occupied by air. This is often undesirable or unacceptable. Another disadvantage is that the two-compartment filling containers known to date can actually only be assembled and filled by professionals with the relevant specialized skills. Filling by the filling manufacturer himself is generally not possible, especially under sterile conditions. Furthermore, the internal container used conventionally is also extremely expensive.

The present invention provides a novel method as described in item 1 above, which can be filled with a high degree of filling without residual gas, even under sterile conditions, especially by dispensing manufacturers who are not very familiar with aerosol technology. A two-chamber filled container is obtained. Furthermore, wooden containers are extremely inexpensive.

A two-compartment filled container of the present invention that meets this requirement is described in claim (1). Preferred embodiments and other constructions will be apparent from the claims.

Hereinafter, embodiments of the two-compartment filled container of the present invention will be described in detail with reference to the attached drawing fτ1.

This two-chamber filling container consists of a shape-stable outer container 1 made of aluminum, a lid 2 to which a discharge valve 3 having a riser pipe 31 is fixed, and a flexible inner container 4. Lid 2
The external container 1 is connected by a so-called bending (clinch) connection.
Tighten the folded edges in the usual way. In the intermediate space between the inner vessel 4 and the outer vessel 10 there is a propellant 'J', usually a light liquid 1 such as Freon 1 or similar, at atmospheric pressure.
I put Higasu in it.

Corresponding to the above-mentioned filling containers there are, for example, conventional aerosol filling containers, such as those described in German Patent Publication No. 2,628.926. A significant difference with respect to such known filled containers lies in the construction of the inner container 4. This structure does not consist of a plastic or metal container receiving a volume corresponding to the volume, as is the case with ordinary filled containers, but is made and folded as a flat foil or laminate bag. The foil bag itself is essentially rectangular and consists of two metal sheets covered on both sides with plastic foil of corresponding shape. Second
As shown in the figure, each <4L 42 is its periphery 43.4
7 and are mutually fused together.

The inside of the plastic material coating is made of, for example, Zurlin R (5urli+1eR) manufactured by Du Bont Co., Ltd.
First, it is made of polyethylene, for example. (Aluminum is good for monthly interest.

The bag or inner container 4 extends over almost the entire height of the outer container 1 and extends along both upper transverse lines 43, 47 of the bag.
During this period, the discharge valve 3 is tightly melted. (Figure 5). 1
As a variant, a tightly fused valve adapter 44 may be provided as shown in FIG.

In this case, a correspondingly formed extension part 32 of the discharge valve 3 is inserted into the valve adapter 44 . In this way, the riser pipe 31 is fixed to the discharge valve 3 and then the valve adapter 44 is extended through the shell into the laminate bag or directly fixed to the valve adapter 44.

The width of the laminate bag measured transversely to the long sleeve or height of the outer container 1 is substantially greater than the diameter of the outer container 1 in the unfolded state and the capacity of the inner container 4 or foil bag is the same as that of the outer container 1. Approximately 20% larger than the volume. The advantage here is that very high degrees of filling (up to 90% and above -L) can be reached without any unacceptable pressures building up in the laminate bag.

In order to easily introduce the inner container 4 into the outer container 1,
The inner container 4 is folded in the manner described above, as shown in FIG. Be prepared.

The ribbon 45 is torn during filling of the bag, so that it can be filled with the bag itself. The laminate bag can, of course, retain its shape through appropriate selection of materials and due to its inherent elasticity. Optionally, the bag may be slightly heated during filling.

Assembling this two-chamber filling container (first, put the liquefied IE into the outer container 1, then assemble the unit consisting of the lid 2, the discharge valve 3, and the inner container 4 fixed thereto). This is done by introducing or assembling the propellant into the outer container 1 and then tightly tightening the lid 2 to the container 1 in the usual manner.Therefore, the present container contains the propellant '1'' inside and outside. This so-called "pre-pressurized filled container"
The filling can be introduced in a known manner via the discharge valve 3 under pressure. This filling method does not require any knowledge or experience specific to the aerosol method, and can generally be carried out by a filling manufacturer who does not have such special skills.

A particular advantage of the two-compartment filled container according to the invention is that the inner container does not contain any air, regardless of the degree of filling from fill to fill. Even if air remains, it can be expelled by the propellant pressure through the short opening of the discharge valve 3 prior to injection. This property is particularly intended for fills which are undesirable in contact with air during storage at the mouth of the fill container.

Furthermore, since there is no residual air, good flying fruit can be obtained.

Since the inner container 4, the laminate bag, does not contain any air, the two-compartment filled container of the invention is also particularly well suited for injection under sterile conditions. In this case, inner container 4? For example, it is effective to sterilize by irradiation with r-rays and to provide a protective cap 33 as shown in FIG. In this case, the injection is carried out directly through the protective opening 33 with a filling needle under absolutely sterile conditions. The i-gap 33 acts as a kind of partition wall. FIG. 6 shows a particularly preferred embodiment of the discharge valve 3 for this purpose. C indicates Kozo. Of course, a protective cap may also be provided over the valve in the embodiment 1+i' shown in FIG. In order to remove all the filling material from the inner container, it is necessary to properly position the discharge gate 30 and inlet '34. Figure 6, i., 1; exemplifies the preferred arrangement of the step 35 of the portion 32 of the valve '3 projecting into the inner container 4. In a variant having a valve adapter 44 shown in FIG. 5, the adapter 44 is provided with a side hole 46.

The inner container 4 does not necessarily have to be flat, but may also be made as a so-called upright bag with a bottom. This may further increase the filling degree.

The inner container 4 is substantially flexible and experiences substantially less resistance to its deformation than a normal inner container. Therefore, the discharge of the charge requires lower pressure and a more subtle propellant. Moreover, the inner container 41 is less expensive than ordinary inner containers and still has the advantages described above.

Although the present invention has been described above in detail with reference to its embodiments, it goes without saying that the heel of the present invention can be modified without departing from its spirit.

[Brief explanation of the drawing]

FIG. 1 is an axial sectional view of one embodiment of the two-chamber filling container of the present invention, FIG. 2 is an enlarged sectional view taken along line II-II in FIG. 1,
Figures 6 and 11 are the lines of Figure 1, respectively.
This is a cross-sectional view taken along the V-+V line. 5 and 6 are a perspective view and an axial sectional view of different modifications of the main part of FIG. 1, respectively. 1...Outer container, 2...Lid, 3...Release valve, 4...Inner container, 'P...Propellant nij/1jii: 1 476-

Claims (9)

[Claims] (1) A substantially shape-stable outer container and a flexible inner container positioned within the outer container to receive a fill material are spaced apart by 1M, and a lid provided with a release valve communicating with the inner container is used to In a two-compartment filling container in which the outer container is closed and the pressurized propellant is placed in the intermediate space between the outer container and the inner container, the inner container is almost completely closed without filling the inner container. A two-compartment filling container, characterized in that the two-compartment filling container is configured such that they are completely pressed together and a discharge valve is provided so that the filling material can be filled into the inner container under pressure through the discharge valve. (2) A two-compartment filled container according to claim (1), characterized in that an empty state C flat foil bag is used as the inner container. (3) A two-compartment filled container according to claim 21, characterized in that the inner container is folded multiple times around each fold line parallel to the container axis. (4) A two-compartment filled container according to Claim No. 6C, characterized in that the inner container is held in its folded shape by a breakable ribbon. (5) A small number of foil bags (both insides are coated with synthetic resin1)
Claims (2) to (4) characterized in that the frame is made from two approximately rectangular metal foils, and these metal foils are tightly joined to the surrounding area 1 (&). A two-compartment filling container according to any of paragraphs. (6) A two-compartment filling container according to any one of claims (2) to (5), characterized in that the foil bag is directly fixed to the discharge valve. (7) The two chambers according to any one of claims 421 to (5), characterized in that a valve adapter is provided in the bag, and the valve adapter is joined to the release valve. Type filling container. (8) A two-compartment filling container according to any one of claims (2) to (7), characterized in that the foil bag is formed as an upright bag with a bottom. (9) Claim 11, characterized in that the release valve is closed in a sterile state by a removable cap.
) to (8). (IO) A two-compartment filled container according to any one of claims 11 to 9, characterized in that the capacity of the inner container is larger than the capacity of the outer container.