MULTILAYER POLYMERIC COMBINED MATERIALS AND A METHOD OF THEIR PRODUCTION Russian patent published in 2005 - IPC

FIELD: methods of production of multilayer - mainly trilaminar - polymeric combined materials.

SUBSTANCE: the invention concerns to the method of production of trilaminar polymeric combined materials. The first layer of the material consists of fluorine-containing polymer, the second - the interlayer is made out of polycarbonate and the third layer - out of ethylene -vinyl-acetate copolymer, the Method includes the following successive production operations: a)production of a double layer combined polymeric material, the first layer of which consists of a fluoroplastic, and the second layer - our of a polycarbonate; b) deposition atop of polycarbonaceous layer of a double-layer combined polymeric material of the third layer consisting of a copolymer of ethylene and vinyl-acetate. The method allows to produce a material without a thermal damage to the ethylene-vinyl-acetate copolymer caused, for example, by its cross-linking. The combined materials according to the invention have the good mechanical properties, in particular, high parameters of strength, viscosity and elasticity.

EFFECT: the invention ensures production of multilayer polymeric combined materials good mechanical properties - high strength, viscosity and elasticity.

5 cl, 1 dwg, 2 ex