Package making – Plural layer package material – Lining preformed receptacle
Patent
1998-07-17
2000-01-04
Moon, Daniel B.
Package making
Plural layer package material
Lining preformed receptacle
53449, 493100, B65B 3900
Patent
active
060096853
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a device for insulated filling of a container, which device comprises a holder with a folded bag with one or two openings and arranged for insertion into the container and in an expanded state forms a lining therein and where the container further has at least one closing device in order to keep the container and the bag closed and a supply pipe for filling the bag with fluid or material after it has been inserted in the container, thus enabling the container to be filled without the fluid or the material coming into contact with the inside walls of the container.
In this context the term "insulated" means that the material with which the container is filled should not touch the inside of the container, but should be kept inside a bag which is inserted first and which is described in technical terms as a "liner". Even though the invention can be employed in all types of containers with an open internal cavity, it has been especially developed in connection with this kind of "lined" filling of oil barrels or so-called Eurocontainers (IBC international bulk container), forming in principle a funnel with an associated bag.
For the sake of simplicity, therefore, in the description of a typical design, even in its complete form with insertion elements, etc., the entire device will be called a "funnel", while the container will be called a "barrel" or "oil barrel". The device or the funnel, however, is also suitable for lined and insulated filling of other containers, including everything from small bottles up to very large ship's tanks.
The funnel is adapted to present day and future requirements with regard to resource-saving and environmentally friendly distribution, it will be cost competitive in the field of systems which arc based on resource-saving reuse and/or recycling, and it is particularly suited for adaptation to already existing filling and distribution systems for fluid or material, first and foremost oil. In this respect the invention offers considerable advantages over the hitherto known solutions.
The concept of the invention further develops and combines two technical fields, viz. packaging solutions with a liner for use in a resource-saving deposit and return system, and storage and distribution of paint, chemicals, waste oil or fresh oil in large handling units such as oil barrels.
The state of the art for the first of these technical fields is represented by U.S. Pat. No. 5,242,085 published in September 1993, and the international application WO94/19242 with priorities from February and August 1993, while the second technical field in the patent literature is represented by WO-A-88/08401, FI 55814, GB 1 392 603 and EP 0 462 175.
We shall briefly illustrate the problems in these technical fields, taking the latter first:
During normal transport and handling, cylindrical packaging units such as oil barrels and other units with polygonal cross sections made of metal or plastic have a limited durability, partly due to damage which can easily be incurred and partly as a result of external attacks of corrosion. This may cause leakages to occur, giving rise to pollution. Internal corrosion can also be a problem when metal oil barrels are used for corrosive liquids. Finally, oil barrels with a filling opening only at the top are difficult to empty completely, which also contributes to pollution, and in many cases when they are reused, up to several litres of remaining liquid have to be first removed by a cleaning process which first of all is undesirable for several reasons and moreover can be difficult to implement quickly and effectively.
A solution which protects the inside of the barrel and simplifies the cleaning process or renders it superfluous may be to provide an impermeable bag or liner whose shape and volume are adapted to the inside of the barrel. According to WO-A-88/08401 it is proposed that such a liner should be attached to a cylindrical neck section and the entire unit screwed into the oil barrel's threaded bung-hole. However, the bag's neck section protrude
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