DE410301C - Process for applying an inner coating consisting of silicates, in particular water glass, to used barrels - Google Patents

Description

Method for applying one of silicates, in particular water glass, existing inner coating on used barrels. It is known to use new barrels To treat silicates, especially with water glass solutions, one of which is thinner or thicker layer is left behind, which prevents the contents of the keg with the Wood wall comes into contact and it stains or off-taste substances borrowed.

In the fat trade, in particular, the darkening that occurs in Barrels of packed fat adopts a very noticeable disadvantage.

So far, however, it has not been possible to use already used barrels To treat silicates in such a way that the development of color and aftertaste in the contents of the barrel is avoided.

Experience has shown that the present procedure makes it possible, even old ones Treating barrels with silicates in such a way that they are used just like new barrels can be.

A difficulty to be overcome first is that the old barrel cannot stand two dryings, as this changes depending on how it has been cleaned of the barrel and after treatment with silicates prove necessary. This repeated Drying causes the staves to warp and the barrel to leak.

Another difficulty is that when introducing the waterglass solution after rinsing and licking the barrel without drying it sufficiently, the layer of waterglass solution in the long run its strength through the action of the rinse water would lose.

In the case of the present invention, the disadvantages mentioned are thereby eliminated avoided that only one drying is necessary and the water glass solution with the rinse water does not come into contact.

The procedure is as follows: The barrels to be treated are repaired and scalded in the usual way, d. H. a few minutes with boiling or at least shaken warm soda solution. This brewing lasts until all fats and oils have been dissolved and decomposed and are therefore easily removed can be determined while at the same time from the approximately escaping steam can see if the barrel is tight.

The soda and fat residues are then removed with boiling, pure water rinsed the keg with heated air or another heated gas dried and heated in such a way that any moisture is removed. Without To let the barrel cool down, a water glass solution is added to the barrel immediately after heating introduced, which one lets circulate in it. Remains on the warm inner barrel wall Immediately stick a layer of the liquid, while the rest drains off undiluted and can be used over and over again. The barrel can now cool down further and is then immediately ready for use. So by this procedure two processes are usefully connected. The one supplied for drying the barrel Heat is used at the same time to dry out the silicate, while the latter in turn brings about better cooling of the barrel.

The whole procedure can be completed in less than ten minutes and delivers tight barrels, the silicate skin of which any effect of the barrel walls on the Barrel contents prevented.

Claims (1)

PATRPTT CLAIM: Method for applying one of silicates, in particular Water glass, existing inner coating on used barrels, characterized that the barrels rinsed, heated and immediately after their repair and cleaning then treated with a water-glass solution while still warm, in such a way that that the drying of this solution takes place without repeated supply of heat.