The invention belongs to the field of production of optical
diffusion films and particularly relates to an optical
diffusion film and a production process thereof. The production process includes the steps of producing
diffusion liquid, stirring, moving the diffusion liquid to a trough of a
coating machine, allowing the trough to feed from the ends and
discharge from the middle, and
coating one face of a base film with an optical
diffusion layer; producing anti-sticking liquid and mixing, moving the anti-sticking liquid to the trough of the
coating machine, allowing the trough to feed from the ends and
discharge from the middle, and coating the other face of the base film with an antistatic layer. The optical diffusion film produced by the production process has high light
transmittance and
haze value; the optical coatings can well attach to base material; light permeating the diffusion film is soft and even; the optical diffusion film also has excellent anti-sticking property. A stirrer is disposed in each of containers of diffusion liquid and anti-sticking liquid, the diffusion liquid and the anti-sticking liquid are rotated, and diffusing particles and anti-sticking particles are avoided
settling; a reflow device is provided, the trough feeds from the ends and discharges from the middle, liquid
cycling is ensured, particle settlement is avoided, and yield of the optical
diffusion field is increased.