JPH0414364Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> This invention forms the top plate surface slightly below the upper circumferential edge, and the inlet plug part of the top plate surface has a double structure that can be stretched. The present invention relates to a composite container having an inner bag inside an outer container.

<Prior Art> Conventionally, open drums equipped with synthetic resin inner bags have been used to transport synthetic resin products such as paints and inks.

However, in these paints and inks, when the liquid surface comes into contact with air, a chemical change occurs and the surface may harden.

As an example of such an open drum having an inner bag, a composite container is known, for example, as disclosed in Japanese Patent Publication No. 58-24353, in which a synthetic resin inner container having a take-out tube is housed inside an outer container.

<Problem to be solved by the invention> However, in order to use the composite container according to the above-mentioned Japanese Patent Publication No. 58-24353, the top plate of the open drum can (outer container) must first be removed and an inner bag made of synthetic resin membrane ( After filling the inner bag with the product, squeeze out the air inside the bag, seal the take-out tube of the bag with a cap, attach the inner lid and top plate of the drum, and place the take-out tube above the top. The current method is to allow the drum to be pulled out from a board, and the actual situation is that it takes a considerable amount of time and effort from loading the inner bag to one drum to attaching the top plate.

For this reason, industries that use drums of this type as containers for filling products find the above-mentioned operations complicated, and there is a desire to simplify them.

This idea addresses the problems of conventional open drums with inner bags mentioned above, and in particular, it is a composite container that does not cause skinning or surface hardening when the liquid surface of the filled product comes into contact with air, and in addition, it can be easily filled with products. The purpose is to provide

<Means for Solving the Problems> This invention provides a composite container having an inner bag made of a synthetic resin film that has an inlet stopper on the top plate surface inside the outer container. The inlet plug is held horizontally slightly below the upper edge, has a double structure that allows the inlet plug to be stretched, and is made of a flexible material that allows the stretched plug to be tied together.

<Function> According to this invention, since the top plate surface of the inner bag is held horizontally, when filling a product such as paint from the filler plug part on the top plate surface, the liquid level of the product is as above. By pushing up the horizontal top plate surface, all remaining air inside the inner bag is discharged through the inlet plug. Therefore, the liquid surface of the product can be reliably isolated from the air, thereby preventing skinning and surface hardening that occur in the past.

Moreover, since the stretchable filler plug is made of a flexible material that can be bundled, the inner bag can be easily sealed. Therefore, the filling operation of the above-mentioned product does not require much time and effort.

<Example> Examples of this invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of a composite container A of this invention loaded with an inner bag B, and FIG. 2 is an overall perspective view of the inner bag B.

In the figure, 1 is a cylindrical bag portion, and 2 is a bottom portion. 3 is the top plate surface of the inner bag, and this top plate surface 3
is welded to the peripheral edge 4 of the inner bag B by heat welding so that it is stretched horizontally and is positioned slightly below the upper peripheral edge of the inner bag B.

Therefore, the dimensions of the inner bag B are the same as the height H of the drum C in which the inner bag B is used.

Further, on the top plate surface 3, filler plug portions 5 and 5' used when filling the inner bag with paint, etc. are provided as a double structure that can be expanded as shown in FIG. . The inlet plug portions 5, 5' are made of a flexible material that can be bundled. Reference numeral 6 designates an apron portion which is folded back to the outside of the drum C when the inner bag is loaded into the drum C.

This apron part 6 not only allows the inner bag B to be loaded into the drum C with good stability, but also serves as a mark indicating that the drum is a composite container loaded with an inner bag and must be handled with care during transportation. .

The filler plug part 5 provided on the top plate of the inner bag B has a first
As shown in the figure, when the inner bag B is loaded into the open drum and the top plate 7 of the drum is placed on top of it,
It is necessary to provide it at a position that corresponds to the large mouth plug part of the canopy 7.

According to the above configuration, when a product such as paint is filled from the filler plugs 5, 5' in the inner bag B of the composite container as shown in FIG. Since the liquid level is pushed up, all remaining air inside the inner bag B is discharged through the inlet plug portions 5 and 5'. Therefore, since the liquid surface of the product can be reliably isolated from air, skinning and surface hardening unlike in the past does not occur.

Immediately after filling, the double-walled inlet plug portions 5, 5' are stretched as shown in Figure 3, and the stretched plug portions 5' are tied together by themselves or tied with a string or the like. After that, this is pushed into the inside of the drum through the spout and the drum is closed. Here, since the spout 5' is made of a flexible material, it is easy to bundle the spout 5' itself, and as a result, the process from filling the product to closing the spout of the drum can. It doesn't take much time to work.

Further, in order to take out the product from the composite container filled with the product, the top plate 7 of the drum can be removed and the top of the inner bag B can be cut.

Note that a synthetic resin film such as polyethylene is used as the material for the inner bag.

<Effects of the invention> As explained above, the composite container of this invention has the following features: the top plate inside the interior is held horizontally, and the bundable filler plug has a double structure. Therefore, when filling the product, the liquid level is held horizontally and the top plate surface is pushed up to exhaust air, so there is no risk of skin formation.

Furthermore, after filling, the inner bag can be easily sealed by simply stretching the double-walled injection port plug and tying its upper part. As a result, a great effect can be obtained in that it is much easier to fill than conventional open composite containers.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the composite container of this invention, Fig. 2 is an overall perspective view of the inner bag used in this invention, and Fig. 3 is a double-layered filler plug portion of the inner bag of Fig. 2. FIG. A...Composite container, B...Inner bag, C...Drum can, 3...Top plate surface, 4...Periphery, 5, 5'...
Inlet plug part, 6... Apron part, 7... Drum can canopy.

Claims (1)

[Scope of utility model registration request] There is an inlet plug part 5 on the top plate surface 3 inside the outer container C,
5', the top plate surface 3 of the inner bag B is held horizontally slightly below the upper edge of its periphery, and
A composite container characterized in that the inlet plug parts 5, 5' have a double structure that can be stretched, and the stretched spout part 5' is made of a flexible material that can be bundled.