Bag for the containing of gas-producing liquid products, in particular yeast

Abstract

Bag for containing liquid products which produce gas, in particular yeast, of the double wall type, comprising two opposite faces (2) joined one to the other along a perimeter heat-sealing line (3) and a spout (7) for delivering the liquid product placed on one of these faces (2), the double wall of the bag comprising a high permeability inner film (5) and a reinforcing outer film (6), wherein at least in the upper part of each of said two opposite faces (2) of the bag (1), between said inner film (5) and said outer film (6) at least one spacer element (10) is provided, attached to the outer film (6) at at least one opening (19) formed therein and provided with holes (17) for the release of the gases which permeate through said inner film (5).

Description

technical field [0001] The object of the present invention is a bag for containing gas-producing liquid products, in particular yeast for making bread. Background technique [0002] In the following description specific reference will be made to yeast, but it should be understood that the present invention is also applicable to any liquid or paste-like product that generates gas during storage. [0003] Yeast is usually liquid at the production stage, but in order to be placed on the market, in most cases, the yeast is subsequently dehydrated for converting it into powder or into the form of solid agglomerates. During the use phase, the yeast will be brought back to liquid form again. [0004] More recently, there has been a trend to produce and package yeast directly in liquid form, which is advantageous from a practical and economical point of view in eliminating the need to convert from liquid to solid during production and vice versa during use. transformation stage. ...

AI Technical Summary

Problems solved by technology

[0005] The problem with storing liquid yeast is that the yeast produces a lot of gas, especially carbon dioxide, which can be as high as 1-3 liters a day for 10 or 20 liter packages

[0012] This pressure contact leads to a firm adhesion between the inner and outer plastic films of the bag, in particular to the clogging of the holes provided in the outer film and thus prevents the release of gases which tend to accumulate in the upper part of the bag, where In the upper part, since the small perforated surface of the outer film is not in contact with the inner wall of the storage box, it is difficult to discharge the gas

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