EXTRUDING PLASTICS COATING ONTO OPTICAL FIBRES

摘要

Dimensional stability problems are associated with the quench cooling of optical fibres provided with a secondary extrudate coating of crystallisable polymeric material when such coatings are subsequently thermally cycled above their glass transisition temperature. These are avoided by forced cooling with fluid within the temperature band of peak crystallisation rate until crystallisation has proceeded to substantially the maximum achievable value.