JPS5920549B2 - A combination of a container with a removable lid and an inner bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combination of a container having a removable lid, an inner bag, and a fixing ring, and more specifically, a disposable inner bag which is used when filling with liquid contents such as paint and ink. The present invention relates to an assembly in which the inner bag is sufficiently fixed to the container to prevent it from easily coming off during storage, transportation, stirring, removal, collection, etc.

Conventionally, for example, open drums made of 2001 steel have been frequently used as paint containers, and these are generally recycled and reused after use. Recycling requires a large number of man-hours and fees, as it requires the following steps: 1. Burning off residual paint by heating, 3. Shot blasting, 3. Correcting drum deformation, and 4. Repainting. To solve this problem, a disposable inner bag made of a plastic film such as polyethylene or polypropylene has been used to prevent the inside of the drum from being contaminated by the contents. By the way, if a cylindrical inner bag is simply used, the inner bag may slip into the container during filling, storing, transporting, stirring, taking out, collecting, etc. There was a problem where it no longer functioned as intended. To this end, attempts have been made to make the inner bag material thicker to make it more self-sustaining, and to fold part of the inner bag outward from the drum opening.
From the viewpoint of disposable inner bags, none of them have achieved technologically or economically satisfactory results. Furthermore, the paint, ink, etc. contained in the open drum may be agitated using a mixer at the customer's end while the paint, ink, etc. are contained in the open drum. At this time, the inner bag gets caught up inside the container as the contents are stirred, forcing interruption of the stirring operation and also failing to perform the function of preventing contamination inside the container. In this regard, there has been a demand for improvements in the inner bag or its combination with the container. An object of the present invention is to provide an assembly in which the inner bag does not easily separate from the container during filling with the above-mentioned contents.

Another object of the present invention is to provide an assembly having an inner bag that has a simple structure suitable for disposable use and can be manufactured from inexpensive materials. That is, according to the present invention, the combination is a combination of a container, an inner bag, and a fixing ring, which is characterized by having the following configuration.

(a) The container has a cylindrical body having at least one ring portion protruding outward along its circumferential surface, a bottomed container body whose entire end face is open as an opening, and a container body opening. It consists of a lid that is airtightly removable and has a plastic film sheet removably attached or fixed to the inner surface. b The inner bag can be removably loaded into the container body,
It has an opening that protrudes a predetermined width from the opening of the container main body when loaded, and the protruding portion can be folded back to the outside of the container main body, and is made of plastic film. (c) The fixing ring is made of metal or plastic and can be tightly fixed to the container body from the inside of the inner bag at at least one of the ring portions when the inner bag is loaded into the container body. Next, the present invention will be specifically described with reference to the accompanying drawings.

1 and 2 show a basic embodiment of the combination of the present invention, which is constructed on the basis of a conventional 200e steel open drum.

That is, it consists of a combination of a drum body a1, a lid A2, an inner bag b, and a fixing ring c. The drum body a1 usually has
In the cylindrical body 11, a ring portion 12 protrudes outward along the circumferential surface of the body at a position where the height thereof is approximately divided into three;
13 are formed, and these can be advantageously utilized as they are in the present invention.

Of course, in the present invention, the number of the annular portions does not need to be plural as described above, and it is preferable to have only one. ``In this connection, it is preferable that the band part is formed on the upper part of the body part 11. In short, the inner bag b (described later) is loaded into the drum body a1 and tightly fixed inside with the fixing ring c, and the inner bag may slip into the drum body or get caught inside the drum body when the contents are stirred. The shape, number, and position of formation may be selected within the range that provides the desired function. In addition, 1
Reference numeral 4 indicates an opening that is open to the entire one end surface of the cylindrical body 11, and 15 indicates a bottom. The lid A2 consists of a main body 16, a plastic film sheet 17 disposed on its inner surface, and a ring-shaped packing 18 disposed around the periphery of the main body 16 so as to hermetically seal the drum body a1.

The sheet 17 is removably attached or fixed to the main body 16. This is a sheet 17 of a predetermined size on the main body 16.
It may be fixed by inserting and fixing the packing 18 into the curved peripheral portion of the main body 16, or it may be tightly attached to the main body 16 by a normal method such as using an easily peelable adhesive or heat welding. good. More preferably, a sheet 17 previously formed to the inner surface shape of the main body 16 may be used and fixed with a padding 18, or an appropriate method such as bonding or thermally welding the integrally molded sheet 17 and packing 18 together may be used. may be adopted. More preferably, as shown in FIG. 5, a plurality of holes 19 are formed in a part of the part where the packing 18 contacts, so that some of the adhesive applied to the packing 18 directly adheres to the main body 16 through the holes 19. You can also do this. According to this, there is no need to use the sheet 17 molded to the inner surface shape of the main body 16, and the sheet 17 and packing 18 can be attached using a conventional adhesive. A portion of the hole 19 may have its outer sheet removed to form a notch. The depth of the cut should be such that the edge of the sheet 17 touches the curved peripheral edge of the main body 16 and can be pressed by the packing 18, and the length of the cut should be such that the edge of the sheet 17 can be pressed against the curved peripheral portion of the main body 16, and the length of the cut should be such that the edge of the sheet 17 can be pressed against the curved peripheral portion of the main body 16. It is sufficient that the sheet at the end of the cut does not lift up. As a result, the main body 16 of the packing 18
The contact surface with the main body 16, seeker 7,
The adhesive force between the three parts of the packing 18 is further improved.
Therefore, the lid A2 can be airtightly attached to the drum body a1 by positioning the packing 18 at the open end 14 of the body 11 and using a band (not shown) according to the usual method. By doing so, the lid A2 can be detachably attached to the drum body a1. The inner bag b that can be removably loaded into the drum body a1 has a cylindrical body 21 with a bottom 20 whose diameter and height are the same as or similar to the inner dimensions of the body 11 of the drum body a1. Then, a drum body a is extended from this body part 21 with the same diameter or a slightly larger diameter.
1, and a portion 22 that protrudes by a predetermined width from the opening 14 when loaded into the bag b, and both are integrated, and an opening 23 of the bag b is formed at the upper end of the protruding portion 22.

The protruding portion 22 can be folded back to the outside of the body portion 11 when the bag b is loaded into the drum body a1.
Therefore, the width of the protruding portion 22 only needs to be large enough to allow it to be folded back to the outside of the body portion 11.
If a label for the contents is to be attached to this protruding portion 22, the appropriate dimensions may be taken. By doing so, it is also possible to prevent the outside of the body 11 covered by the folded portion from getting dirty. The inner bag b having the above structure is entirely made of plastic film, but since it can be removably loaded into the drum body a1, it needs to have a certain degree of flexibility, and it also needs to be resistant to thermal deformation and thermal welding. In some cases, thermoplastic films such as polyethylene and polypropylene, or composite films thereof, are suitable as the material.

Further, depending on the nature of the contents, a composite film made of the above film and other materials (for example, paper, cloth, metal foil) can also be used as required. Note that since the protruding portion 22 can be folded back to the outside of the body portion 11, a single thin thermoplastic film or a composite film is suitable. Therefore, the thickness of each part of the inner bag b may be appropriately selected within the range that fulfills its respective function. When high-density polyethylene film is used as the material, the body 21 may have a thickness of approximately 250 μm, the bottom 20 may have a thickness of approximately 800 μm, and the protruding portion 22 may have a thickness of approximately 70 μm. In addition, making the bottom thick and hard is effective in preventing the inner bag b from getting caught when stirring the contents, and preventing the bottom from being adsorbed by the suction port when taking out the contents with a pump. Because there is. When using materials with different film thicknesses,
The inner bag b is produced by thermally welding the bottom 20 to the body portion 21 and then thermally welding the protruding portion 22. Of course,
Even if the inner bag has a uniform overall thickness, it can be used in the present invention. The sheet 17 disposed on the lid body 16 may be appropriately selected from the various films mentioned above.
For example, a polyethylene film of the same quality as above and having a thickness of about 70 μm may be used. Put such an inner bag b into the drum body a.
The fixing ring c for loading and tightly fixing the drum body A1 is desirably an annular shape having a size approximately equal to the inner diameter of the ring portions 12 and 13 of the drum body a1, but it is sufficient as long as it can be tightly fixed.

For example, the main body 24 may be cut at one place and have the property of being pushed open with a moderate elasticity greater than the inner diameter of the annular portions 12 and 13. According to this, the annular portion 12
, 13 is expanded by the elasticity of the ring c and tightly fixed to the inner recesses of the annular parts 12 and 13, so that the drum of the inner bag b, which is the intended purpose, is expanded. Body a
Separation from 1 can be satisfactorily prevented. In addition, the above ring c
In this case, as shown in FIG. 4, a slidable joint 25 may be attached to the cut portion of the main body 24 to form a complete annular shape. Such a fixing ring c may be made of a material that does not adversely affect the quality of the contents, and examples of the material include metal (steel, stainless steel, etc.) and plastic. If the same type of plastic as the inner bag b is used, the fixing ring c may be fixed to the inner bag b by heat fusion. The number of such fixing rings c does not necessarily have to be equal to the number of annular parts, and it is sufficient if there is at least one.

In one case, in combination with a drum main body having an annular zone in the opening, it is preferable to attach a fixing ring to the annular zone in order to securely fix the inner bag satisfactorily.
When using a plurality of fixing rings, the mounting positions thereof may be appropriately selected depending on the number of annular portions of the drum body. Various aspects of attachment of the fixing ring to the annular portion of the drum body are as shown in FIGS. 3 1 to 10, particularly 1 to 5. In the figure, A is the position of the annular zone in the opening of the drum body, B and C are the positions of the annular zone that divides the height of the drum body into three equal parts, and D is the position of the annular zone at the bottom of the drum body. Indicates the location of the annular zone. In addition to the manner in which the fixing rings are attached to the drum body, as shown in FIGS. It may be used by attaching it to the Further, as shown in FIGS. 3, 8 to 10, the fixing rings c may be connected together using an auxiliary tool 26. According to the combination of the present invention having the above structure, the inner bag may slip into the drum body while filling or storing liquid contents such as paint and ink into the drum body, and the contents may be agitated. In addition, the inner bag does not get caught up inside the drum body at times, and since the outside of the opening of the drum body is covered by the inner bag, and the inner surface of the lid is also covered, the contents will not get caught up in the drum body. Since the drum is not inadvertently contaminated, recycling for reuse of the drum becomes easy.

Although this requires replacement of the inner bag and lid inner cover, it is advantageous in terms of man-hours and labor costs compared to the conventional recycling method described above. Further, since the drum does not have to be subjected to harsh regeneration conditions as in the conventional regeneration method, the present invention is advantageous in that the number of service life of the drum itself is more than twice as long as that of the conventional regeneration method. Furthermore, as mentioned above, the inner bag can withstand agitation of the contents, so the consumer has the advantage of being able to use the drum not only as a container but also for other purposes. In addition, since the contents do not come into direct contact with the metal surface of the drum body, there is no possibility of rust or other foreign matter contaminating the metal surface, and the amount of contents adhering to the drum body is considerably reduced compared to when filling directly into the drum body. There are also advantages. Note that although the above example is explained based on a 200e steel open drum, the container a in the present invention is not limited to this, and other containers that are recycled and reused in a similar manner are also within the scope. shall be included in the

Therefore, if such containers do not generally have a concave portion corresponding to the above-mentioned ring zone, the concave portion may be formed by deforming the containers, and the containers may be made of metal, plastic, or hard rubber. The recess may be formed by fixing the material. The following improvements may be added to the combination of the present invention having the above configuration.

That is, metal,
One or more protrusions, preferably three to four, made of plastic or hard rubber are fixed at equal intervals by welding or gluing. In this case, a concave portion matching the above-mentioned protrusion may be provided at a corresponding location on the inner bag b, but this is not necessarily necessary. By providing such a protrusion, together with the thick film (hard) bottom 20 of the inner bag b, it prevents the inner bag from being rolled in when stirring the contents as described above, and from the pump suction hole when taking out the contents. In addition to being able to more reliably prevent adsorption of the bottom of the
When the drum body a1 is tilted or overturned to take out the contents, it is possible to prevent the inner bag from separating from the drum body together with the contents and being discharged to the outside.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing a specific example of the combination of the present invention, Fig. 2 is a central vertical sectional view, Figs. The figure is a partially enlarged cross-sectional view of the fixing ring, and FIG.
2 and 13 are the annular part, 14 is the opening, 15 is the bottom, A2 is the lid, 16 is the main body, 17 is the inner sheet, 18 is the packing, 19 is the hole, b is the inner bag, 20
is its bottom, 21 is its body, 22 is its protruding part, 2
3 is its opening, c is its fixing ring, 24 is its main body, 2
5 indicates its joint, and 26 indicates its auxiliary tool.

Claims (1)

[Scope of Claims] 1. A combination of a container and an inner bag, characterized in that the container, the inner bag, and the fixing ring have the following configurations. a. The container has a cylindrical body with at least one ring portion protruding outward along its circumferential surface, a container body with a bottom whose entire end face is open as an opening, and a container body opening. It consists of a lid that is airtightly removable and has a plastic film sheet removably attached or fixed to the inner surface. b. The inner bag can be removably loaded into the container body, and has an opening that protrudes a predetermined width from the opening of the container body when loaded;
The protruding portion can be folded back to the outside of the body of the container, and is made of plastic film. c. The fixing ring is made of metal or plastic and can be tightly fixed to the container body from inside the inner bag at at least one of the annular portions when the inner bag is loaded into the container body. 2. The combination according to item 1 above, wherein the fixing ring c is elastic and has the property of being pushed open. 3. The combination according to item 2 above, wherein the fixing ring c is formed into an annular shape by the joint. 4. The above-mentioned first ring in which a plurality of fixing rings c are interconnected.
The combination according to any one of items 1 to 3. 5 Container a
5. The combination according to any one of items 1 to 4 above, wherein the main body has one or more protrusions formed inside the bottom of the trunk.