DE1272757B - Lubricant for the feed plate belts of bottle washing machines - Google Patents

Description

Lubricant for the feed plate conveyors of bottle washing machines In the case of automatic bottle washing, it is desirable to prevent foam formation to a large extent to avoid, for example, the removal of the detached labels from the bottle washer not to complicate and in particular to prevent lye losses. The foaming in automatic bottle washers is not just about the composition of the Cleaning agent, but also depending on other various circumstances, such as B. the type of label glue used or by the apron conveyors introduced lubricants.

The bottles are transported to the cleaning machine with the plate conveyors introduced. To ensure good sliding, it is necessary to use the apron conveyors to lubricate. It cannot be avoided that lubricants are deposited on the bottoms of the bottles adhere and then get into the cleaning bath. Even with machine types that have a In practice, chain lubricants always get into the bath the cleaning machine.

In practice, this has hitherto been used to solve the problem of the foam tries to mix antifoam agents with bottle cleaners. At the When starting a cleaning bath, you then have a corresponding supply of antifoam agents, which counteracts foam formation. However, the amount of foam-forming increases Substances increase so much over time that the tendency to form foam is greater is considered to be the ability of antifoam agents to destroy foam, so is another Addition of cleaning agents or antifoam agents necessary. This way of working has the disadvantage that the foaming behavior during the working period of several days of the bathroom is quite inconsistent and possibly the cleaning solution without that it has been largely used up, must be drained.

These shortcomings become apparent through the use of the agent according to the invention largely avoided. The new lubricant for the infeed plate conveyors of bottle washing machines is characterized in that it contains known antifoam agents. on this way it is made possible without additional apparatus depending on to continuously supply antifoam agents to the throughput of the bottles and thus to a large extent to bring about a uniform foam behavior of the bath. It has also been shown that the substances used under the conditions of the automatic bottle washing as Antifoam agents are effective, not well in commercial chain lubricants can be incorporated without the effectiveness of the chain lubricant noticeably reduced will. In many cases, even by using such chain lubricants improves the sliding properties of the bottles. The apron conveyors get a clean one Appearance in that there are no deposits of lime soaps in hard service water the ligaments occur.

In practice, products are predominantly used as apron conveyor lubricants used on the basis of sodium or potassium soaps. Come as an anti-foam agent for the above purposes condensates of ethylene oxide with a hydrophobic component, made by condensing propylene oxide with propylene glycol or ethylene diamine is to be considered. Such products are under a number of trade names available.

Furthermore, polypropylene glycols with an average Molecular weight of more than 1200 as well as commercially available silicones for such purposes, preferably used in combination with non-ionic wetting agents. Of the The proportion of antifoam agents in the apron conveyor lubricants can be within considerable limits vary and is generally between 10 and 60 percent by weight, based on the solid matter. In any case, the amount of antifoam should be measured in such a way that that the foam formation caused by the apron tape lubricant in the cleaning bath is balanced and, in addition, a certain amount of antifoam is used Is available to press further foam formed in the bath.

The application takes place in such a way that the plate conveyors with the lubricants according to the invention are provided in the usual way. In this way When the bottles are fed into the cleaning bath, a corresponding one also arrives amount of lubricant adhering to the bottles in the cleaning solution. Will If no bottles are fed in, the antifoam agent is also not fed in. Example In an automatic bottle washing machine, beer bottles were with a cleaning solution containing 0.5% NaOH, 0.15% condensed phosphates, 0.15 / o Sodium silicate and 0.02 / o antifoam agent, purified. The apron conveyors were In this experiment, a solution was added which contained 2.8 parts of soap (manufactured by Saponification of castor oil with potassium hydroxide). At the end of the second working day was the first disturbing foam formation to be observed, which resulted in further addition of the Detergent containing anti-foaming agent required. In the following Working days, the time between adding the antifoam was reduced and the recurrence of foam more and more. The following week it was under Working with the same detergent, but using the slat tape lubricant 0.8 parts of antifoam added. It now turned out that until the drain After one week of the bath, no foaming of the cleaning solution was observed was.

Claims (2)

Claims: 1. Lubricant for the infeed plate conveyors from Bottle washing machines, characterized in that it is known per se Contains anti-foaming agents. 2. Lubricant according to claim 1, characterized in that that the antifoam known condensates of ethylene oxide with a hydrophobic Component made by condensing propylene oxide with propylene glycol or ethylene diamine is made are.