Fluid bed processor / coating

Coating: a procedure with many advantages

There are several reasons why coating is a widely used procedure with powdered and granulated products. By applying an even layer of material, we create all-over coatings and functional surfaces. The single or multi-layer coating offers protection against certain environmental effects, masks odours or permits specific and controlled release of active ingredients. The procedure is used in the food industry and also in the pharmaceutical sector.

Coating protects and enhances your products

The purpose of coating is either to form a protective layer for the product’s valuable ingredients or to protect the environment against them. We can take your individual wishes and ideas into account in the process. Depending on the application, we build up suitable protective layers out of melted fats, emulsions or substances dissolved in water such as maltodextrin, dextrose, cellulose, and shellac or polymer compounds.

Powder coating for a longer shelf life

The stable coating of the particles reduces or prevents the absorption of moisture or undesirable oxidation reactions with ambient oxygen or other ingredients of your product. Besides increasing storage stability, this often results in better flow properties and easier dosing. A functional coating can also mask unpleasant odours or tastes. Off-tastes and odour are especially relevant in the food sector, for instance with amino acids or plant extracts.

Functional surfaces

The way in which the ingredients are released can be controlled to your specifications by the powder coating. This can be done with a defined pH, according to temperature, in the form of delayed release or by mechanical means. Resistance to acids (gastric juices) enables the active substances to be released into the gastrointestinal tract at the proper time. This is extremely important in the case of pharmaceutical and medicinal products.

How coating enhances your products

Coating can optimize and enhance the attributes of products in various ways. A coating has the following advantages:
  • Greater consumption of the product: masking of unpleasant tastes and odours
  • Effective protection against environmental effects: coating can prevent penetration by oxygen, moisture or acids. This also makes the coated product resistant to gastric juices.
  • Retarded delivery of food supplements and medicinal products: with delayed-release preparations, powder coating helps to permit later or more specific release of the active substances.
  • Optimized product handling: safer transportation and a longer shelf life
  • Defined solubility
  • Very good flow properties and accurate dosing
  • Narrow range of particle sizes

Examples of products

  • Excipients
  • Extrudates
  • Flavourings
  • Colourants
  • Enzymes
  • Vitamins
  • Omega-3
  • Food acids
  • Amino acids
  • Minerals and trace elements

Coating

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How coating enhances your products
  • Masking of tastes and odours
  • Protection against moisture, acids (gastric juices) and oxidation
  • Specfic release of active substances (retarded delivery)
  • Defined solubility
  • Very good flow properties and accurate dosing
  • Dust-free
  • Narrow range of particle sizes
  • Prolonged shelf-life and storage stability

Examples of products

  • Excipients
  • Extrudates
  • Flavourings
  • Colourants
  • Enzymes
  • Vitamins
  • Omega-3
  • Food acids
  • Amino acids
  • Minerals and trace elements