Introduction to iDPC Technology

iDPC is a novel, scalable and cost-effective formulation/manufacturing technology that processes powders in the dry state and coat small particles onto large particles without the use of heat, solvents or any physical mixing aid. 

iDPC mechanism

iDPC is a low shear, one-step particle coating technology, consisting of 3 simple and controllable critical process parameters

How does iDPC operate?

The principle of dry coating with iDPC arises from the difference in particle size between the host and carrier. iDPC can coat small particles onto larger particles if they are at least 2-3 times smaller than the larger – nano onto micro, micro onto micro and micro onto millimetre.

iDPC technology
iDPC dry coating principle requires the use of a high-speed rotating chamber, with a curtain of inert gas to fluidize the powder at the chamber wall and disperse any agglomerated fine or coarse particles.
Micro to Millimetre
Micro to Micro
Nano to Micro

iDPC Mechanism

iDPC consists of a fast rotating chamber coupled with a stationary gas blade. The mechanism by which iDPC operates is termed thin layer fluidisation which has 3 simultaneous stages. iDPC drives the adsorption/adherence of fine “guest” particles onto the surface of coarse “carrier” without pre-conditioning particles leading to formulations with enhanced functionality, stability and predictable performance.

3 Steps

iDPC consists of 3 simultaneous stages, an initial de-agglomeration, followed by particle dispersion and culminating in particle adsorption onto the larger carrier particles.

  • De-agglomeration: Fast rotating chamber forms a thin layer of powder at the chamber wall, pulling apart any agglomerates within the constituent powder
  • Dispersion: Introduction of gas blade disrupts the thin layer, forming small fluidised pockets which drives the uniform dispersion of the fine particles through the coarse particles
  • Adsorption: The dispersed fine particles adsorb onto the surface of the coarse particles in discrete fractional, ‘mono-/multi-layer’ coatings as a function of the relative concentration
iDPC mechanism
Schematic illustration of the 3 steps to iDPC, deagglomeration, dispersion and adsorption via thin layer fluidisation process.