NIKEL FREE ANODIZING
Anodizing for Food and UK
The Anodizing plant with hot fixing, already in operation for ten years, has just been enhanced as a result of the increase in requests from the Food Sector (UNI EN 14392: 2008 Standard) and by customers who must comply with British Standards (British Standard BS 3987 for the thickness of oxide and BS 6161 / Clark Test for abrasion).
Both regulations provide the absence of Nickel (Nickel Free) in the oxide layer as it is a metal that is found to be carcinogenic.
The process of Anodizing Fixing, which is commonly and historically carried through the use of Nickel, may be alternatively obtained through the hydration, ie the closure of the pores of the Anodized Aluminum by means of hot water.
The British Standard provides a medium thickness of the layer of oxide of 25 µm, while that for the Food Industry does not establish a minimum limit, since the thickness is determined according to the type of use of the finished product.
The British Standard is required especially in architecture for windows , curtain walls and outer shells.
The Food Standard is typically required for machinery for food processing such as slicers, mixers, mills, ice crusher, etc.
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