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A gift of nature

Natural mica has exceptional physical characteristics. It can be found throughout the world, most notably in the presence of Paleozoic rocks. Accessible deposits are located primarily in India, on the American continent, in southern Africa and in Russia. Mica’s chemical composition places it in a group of aluminum silicates.

Two types are extracted:

  • Muscovite, in which there is a predominance of potassium
  • Phlogopite, in which the presence of magnesium can be detected.

Retaining the properties of natural mica

COGEBI has perfected technology that allows the agglomeration of mica fragments to create a homogenous material in continuous production. The COGEBI process subjects the mineral to the action of a highly pressurized water jet, producing flat particles several microns thick, whose physical and chemical properties have been carefully preserved.

The resulting water slurry is fed to a special type of paper machine, which forms a continuous sheet of mica paper. At this stage, there is no need for a binding agent to hold the particles together, because their existing natural intermolecular attraction is usually sufficient.

This 100% mica paper is called Cogemica®, and is based on either Muscovite or Phlogopite.

An another type of COGEBI’s mica paper is called Remika®, which is based on calcined Muscovite mica.

On contrary to Cogemica, flat paper particles of Remika  are created by processing mica through thermal delamination.

The use of Cogemica or Remika is given by the requested properties of the final application.