Vacuum Coater GVC

For best quality in the refinement of pellets and extrudates
vacuum coater

Vacuum coating is a process when liquids is introduced subsequently in extruded feed, pellets or porous products. This is done by the product being sprayed with fat/liquid during the vacuum. Then the vacuum breaks and the liquid is forced into the interior of the product.

Depending on the process parameters, almost all pores can be filled with liquid. Extrudates with a larger pore volume absorb more liquid than comparatively dense pellets. Vacuum coating is a standard process in the production of fish feed. Depending on the feed type or fish species, 4 to 40 % oil are subsequently applied to the extruded fish feed.

Also in the field of dry dog and cat food, this method is being increasingly used, since this is the only way to reach a superior product quality.

In the field of compound feed production, particularly poultry feed, the vacuum coating process is increasingly integrated into existing production plants. The aim is to produce a high-quality, high-energy feed. By the subsequent addition of fat, the energy content of the feed is increased in a simple manner. The high-fat compound feed components in the formulae can be reduced accordingly, which decreases the costs for the raw materials. Low-fat feed pellets often have significantly better qualities (e.g. abrasion resistance). By the subsequent addition of fat by means of vacuum coating this high quality is preserved.