METHOD OF MANUFACTURING FILMS INCLUDING LAYER OF FLUOROPOLYMER/POLYACRYLATE MIXTURE Russian patent published in 2005 - IPC

FIELD: polymer materials.

SUBSTANCE: invention relates to manufacturing optically perfect films, resistant to atmospheric effects and rupture-strong protective and ornamental films containing, in one layer, fluoropolymer/poly(meth)acrylate mixture. Method comprises preparation of mixture containing a poly(meth)acrylate and a fluoropolymer followed by flattening of this mixture into film. Flattening is accomplished by extrusion onto roll at temperature ≤ 100°C. Temperature of mixture is maintained below mixture gelation temperature. Before die inlet, mixture passes filter. Temperature of die is by 5-15°C higher than temperature of mixture entering die but below mixture gelation temperature.

EFFECT: enhanced surface brightness and increased modulus of elasticity of films.

9 cl, 3 dwg