Receptacles – Receptacle having flexible – removable inner liner – Means for venting air trapped between the liner and its...
Patent
1980-03-31
1982-09-07
Shoap, Allan N.
Receptacles
Receptacle having flexible, removable inner liner
Means for venting air trapped between the liner and its...
220 5R, 220378, 220461, B65D 2516
Patent
active
043479480
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a container for holding liquid, and more particularly to a container having an inner bag useful for preventing the inside surface of the container from being soiled by the liquid and preventing the liquid therein from being contaminated by foreign matters from within the container.
Often times 200 liter removable head steel drums have been used as the containers for holding for example a liquid coating composition. Generally, these drums are regenerated after use and offered for re-use. During regeneration, the drum is required to undergo processes in the following order:
1. burning of the residual deposit of coating composition
2. cleaning of the surface by shot blast, etc.
3. removing any deformation of the drum
4. re-coating, the regeneration thus requiring many steps and large costs. In order to solve these problems and for preventing the mixing of foreign matters with the coating composition in the drum and for preventing any change in the quality of the coating composition itself, there have hitherto been used disposable inner bags of plastic films like polyethylene or polypropylene. In the case of the use of an inner bag having simply a tubular form, the inner bag containing the coating composition is apt to slide down in the container during the course of filling, carrying, or stirring or removing the coating composition for use, etc., because of which the original function of the inner bag is lost. To overcome these defects, attempts have been made to use a thicker material for the inner bag to provide a self-sustaining property thereto or to turn a part of the inner bag back down over the outside of the container at the opening of the container. From the viewpoint of the desirability of using a disposable inner bag, however, neither of these attempts has provided satisfactory effects from either the technical or economical viewpoint.
An object of the present invention is to provide a container lined with an inner bag which can prevent the inside surface of the container from being soiled with the liquid contained therein by spilling out of the inner bag during filling a liquid, such as a coating composition or an ink, into the container, carrying, or using the container.
Another object of the present invention is to provide a container lined with an inner bag which the inner bag per se can contain the liquid in a sealed state and which can prevent foreign matter from mixing in said liquid and prevent any change in quality of the liquid.
A further object of the present invention is to provide, by a combination of the inner bag and the container provided with the above characteristics, a container lined with an inner bag, said inner bag having an easy-to-manufacture, simple construction to meet the object of disposal after use.
SUMMARY OF THE INVENTION
According to the present invention, there is provided a container for holding liquid including a container, an inner bag, and one or more fixing means between them, respectively comprising the following:
(a) The container comprises a bottomed container body which has at least one annular or non-annular projection or recess running along the circumferential surface of the inside face of its outer periphery with its one end face opened, serving as a container opening, and a lid body which can be removably fitted in an air-tight state, to the opening of the container body and which has a plastic film sheet removably fixed to its entire inside face.
(b) The inner bag is made of a plastic film tubular shaped bottomed bag which can be removably set in the container body and with an open end thereof substantially protruding from the opening of the container body when the bag is set in it, so that at least one protruding layer portion can be turned down over the outer periphery of the barrel of the container body.
(c) The fixing means is a member for fixing the inner bag inside the container body, said member being removably fitted to at least one projection or recess of the container body with
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Hamada Minoru
Nakamura Nobuyuki
Odajima Akira
Nippon Paint Co. Ltd.
Shoap Allan N.
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