FIBER-OPTIC TAPE WITH ADDITIONAL COATINGS POSSESSING AN IMPROVED CLEANABILITY Russian patent published in 2001 - IPC

FIELD: fibre optics. SUBSTANCE: the fibre-optic tape has a great number of coated, practically coplanar, optic fibres and material of tape matrix that ensures practically coplanar levelling of the above great number of coated optic fibres. Each of the optic fibres has a glass core, sheath enveloping the glass core and adjacent to it, material of the primary polymeric coating preferably containing a silicone compound enveloping the sheath and adjacent to it. The material of the primary polymeric coating has a cohesion with the sheath with formation of boundary between the sheath and the material of the primary polymeric coating. At an impression of the longitudinal cleaning force to the boundary between the sheath and the material of the primary coating the material of tape matrix and the material of the primary polymeric coating are practically removed from the sheath. A continuous smooth residual layer of the primary polymeric coating, at least approximately 5 μm thick, remains on the sheath. EFFECT: improved cleanability without worsening of adhesion of the material of the primary coating, improved splicing by fusion of masses. 12 cl, 4 dwg, 4 tbl, 4 ex