Coating

Fluid Bed Coating

Fluid bed processor is widely used for coating of particle or granules. The enhanced surface area exposed to the processing environment makes the process more robust and results in uniformity in drying, binder distribution or coating. So, in the current scenario, fluid bed technology is most preferred technique when it comes to achieving content uniformity.

Perforated Pan Coating

Tablet coating is done for various purposes:

  • To mask the taste, odour, or colour of the drug
  • To provide chemical and physical protection to the drug
  • To control the release of the drug from tablet
  • To protect drug from the gastric environment of the stomach with an acid-resistant enteric coating
  • To incorporate another drug or formulate adjuvant in the coating to avoid chemical incapability or to provide sequential drug release
  • To improve the pharmaceutical elegance by use of special colours, shape & patents

Film Coating

  • Film coating/insulation that influences the release pattern as little as possible and does not markedly change the appearance
  • Modified release with specific requirement and release mechanism adapted to body function in the digestive tract
  • Colour coating either in film coating or modified release coating to change the appearance

Sugar Coating

Compressed tablets may be coated with coloured or uncoloured sugar layer. The coating is water soluble and quickly dissolves after swallowing. The sugar coating protects the enclosed drug from the environment and provides a barrier to objectionable taste or order. It also enhances the appearance of the compressed tablet and permits imprinting of manufacturer's or brand's information. Sugar coating provides a combination of insulation, taste masking, smoothing the tablet core, colouring and modified release.

For products related to fluid bed coaters