| JP10103543 | PAIRED TYPE SEALING UNIT FOR AIR BAG |
| JP03285636 | PACKAGE OF SEASONING FOR PICKLE |
| WO/1982/004027 | PRESSURE-RESISTANT SEALED BAG |
C L A I M S
1. The reusable air-tight bag constitutes of a bag (1) made of a flexible and with plasticity material, air-tightly connected to two retort valves (2), (3) and is characterised by the retort valve (2) being used for the filling of the bag and retort valve (3) being used for its emptying. |
Reusable Air-Tight Bag
The present invention is a reusable air-tight bag which constitutes of a bag that is air-tightly connected to two retort valves.
Bags of that kind with one retort valve for the emptying of the bag are known. They are used for the storage of drinkable liquids while averting their contact with the atmospheric air for the avoidance of their weathering. As the bag is emptied through the retort valve, it contracts. This happens because no atmospheric air enters the bag to substitute for the emptied liquid. The disadvantage of such bags is that they can only be used once, because once they are emptied, they cannot be used again.
The advantage of the present invention is that the air-tight bag can be used many times, thus solving a number of problems of storage and transportation of fluids, the biggest one being the volatilisation of volatile liquids.
The reusable air-tight bag according to the present invention has the characteristic that it has two retort valves. The first one is used for the filling of the bag with any fluid that needs to be stored and its contact with the atmospheric air or any other surrounding fluid is undesirable. The second retort valve is used for the emptying of the bag from the fluid. A simple way of presenting a reusable air-tight bag is according to the present invention with a bag made of flexible and with sufficient plasticity material and two retort valves air-tightly connected to it. Thus, it is cheap and easy to use, as it can be used with minimal modifications in the existing or future fluid storage means. It is
proved by its use that it solves a number of problems of storage and transportation of fluids, the biggest one being the volatilisation of the volatile liquids.
Drawing 1 shows a perspective of the reusable air-tight bag.
A way to apply the invention is described in reference to Drawing 1. The reusable air-tight bag constitutes of a bag (1) air-tightly connected to a retort valve (2) that is used for the filling of the bag with fluid and a retort valve (3) that is used for the emptying of the bag from the same fluid. The material that the bag is made of depends on the nature of the stored fluid, e.g. if it is liquid or gas, as well as its physical and chemical properties. It should be flexible and with sufficient plasticity, in order to withstand the continuous contractions and expansions of the bag. The shape of the bag in Drawing 1 is indicative, as it will take the desired form of the existing or future means of storage. The retort valves are also dependent on the stored fluid.
In Drawing 1, two retort valves are being used, one for the filling of the bag and one for its emptying. More retort valves can be used though, for the quicker filling and emptying of the bag.