Bushing for production of glass continuous filament, equipment for producing glass continuous filament and process for production of the filament using the equipment

Abstract

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. 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.

Description

technical field [0001] The present invention relates to a bushing used for forming continuous glass fibers, a method for manufacturing the bushing, a continuous glass fiber manufacturing device using the bushing as a main component, and a method for manufacturing continuous glass fibers using the bushing. It relates to the improvement of the outer surface properties of bushings for continuous glass fiber manufacture. Background technique [0002] Generally speaking, glass fibers can be roughly and clearly divided into short glass fibers and continuous glass fibers. This is a heat-resistant container with a molding nozzle called a bushing. This bushing plate is used for forming molten glass into a fiber shape, wherein a bushing plate is fixed to the bottom of the bushing plate peripheral wall to form a bushing plate body (vessel body), and the bushing plate body The inside of the tank is a molten glass supply space, and a plurality of nozzles for flowing molten glass from t...

AI Technical Summary

Problems solved by technology

Here, there is a problem that there are various factors that affect the diameter of the glass fiber. However, the diameter of the continuous glass fiber is not simply determined by the dimensional accuracy of the hole diameter of the nozzle opening. Influence of various factors such as deformation, evaporation of the material constituting the bushing, and temperature, speed, or atmosphere when the glass fiber is drawn out

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