METHOD FOR MANUFACTURING OF HELICAL LONG-PERIOD FIBRE GRID (VERSIONS)

摘要

FIELD: technological processes. ^ SUBSTANCE: method includes twisting of stock around axis with speed of 0.5Ç1 rotation per second and simultaneous longitudinal stretching with speed of 0.1Ç1 mm/s. In the first version stock is represented a solution of polymer with concentration of 50Ç80%, and produced fibre is soaked with polymer dissolvent for 2Ç15 s and dried. In the second version stock is represented by polymer melt, and produced fibre is heated for 5Ç10 s to the temperature that exceeds temperature of polymer softening by 5Ç10C and cooled down to room temperature. Method makes it possible to form helical corrugations on polymer fibre with period from 50 micrometre to 1 mm and height of corrugation from 1 to 20 micrometre. ^ EFFECT: simplified technology of manufacturing and expanded nomenclature of materials and geometric characteristics of helical long-period fibre grids. ^ 2 cl, 5 dwg, 2 ex