BUSHING FOR THE PRODUCTION OF GLASS CONTINUOUS FILAMENTS, PROCESS FOR PRODUCTION OF THE BUSHING, EQUIPMENT FOR PRODUCING GLASS CONTINUOUS FILAMENTS AND PROCESS FOR THE PRODUCTION OF THE FILAMENTS WITH THE EQUIPMENT

摘要

[PROBLEMS] To provide a bushing of strong structure which is reduced in the quantity of substance evaporated from the bushing and enables the formation of high-precision glass filaments. [MEANS FOR SOLVING PROBLEMS] A bushing (1) for producing glass continuous filaments (F) by making molten glass (G) flow out through nozzles (6) of a bushing plate (4), wherein a coating film (7) made of a material selected from the group consisting of ceramics, glass-ceramics and glass covers the outside surface of the bushing plate (4) except the outer peripheral surfaces of the nozzles (6) and the end face; a process for the production of glass continuous filaments by producing glass filaments for composite materials with the bushing (1) while watching the outside surface of the bushing plate (4) and the state of spinning; and a process for the production of the bushing (1) which comprises the bushing body formation step of assembling a bushing body (2), the coating step of forming a coating on at least the outside surface of the bushing plate (4) of the bushing body (2), and the baking step of heating the coating to convert it into a dense-structure film.