comprehensive vertical integration of the manufacturing process
uniquely enables Grafil Inc., together with our parent company
Mitsubishi Rayon (MRC), to fully control every step of the
carbon fiber production process.
Our proprietary carbon fiber process begins in a world scale synthetic fibers
plant and concludes in highly sophisticated carbonization facilities in the
US and Japan.
We start by combining commodity raw materials in a series of chemical reactions
to produce acrylonitrile, which is then polymerized to form polyacrylonitrile
(PAN). A solution of this PAN is then spun into a precursor. This critical
step ensures the maximum potential quality and consistency of the carbon fiber.
This potential is realized during the carbonization process, a precisely controlled
pyrolysis of the PAN precursor to form carbon fibers.