matrix materials for ribbon application became more popular globally, with the
growing demand for fiber, in the 1990s.
Prior to the cabling of fiber, in either loose-tube or ribbon configuration, the
vast majority is colored with a UV-curable ink, in an off-line operation.
UV-curable inks are designed to provide high-quality color on fiber for good
identification and are typically applied at 3- to 5-mm thickness. The UV-cured
ink layer has a hard and slick surface finish to allow suitability in both loose
tubes and ribbons. It is also designed to have excellent adhesion to the secondary
coating and to provide excellent resistance to cabling gel. Colors are designed to
be bright and distinct, giving good color retention over time.
4.5 SPECIALTY COATINGS ...