Method for producing fibers from heat-softening materials

Glass manufacturing – Processes – Forming product or preform from molten glass

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65 8, 264 5, 264 12, 264176F, 425 7, C03B 3704

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active

041859812

ABSTRACT:
Method and apparatus for producing fibers from a heat-softening material in which the heat-softening material is heated to a viscous melt, and directly and continuously flowed out while its sectional shape being rendered substantially circular. High speed gas streams having a component in the tangential direction of the circular sectional surface of the melt and a component which approaches the central axial line of the melt towards the flowing direction of the melt and then departs from the central axial line are jetted out onto the melt that has been flowed out. The high speed gas streams cause the melt to rotate around its central axial line and transform it into a substantially conical shape whose cross section gradually decreases towards its flowing direction in a first zone. In a second zone subsequent to the first zone, the melt is caused to advance in the form of fiber from the tip of the cone in the flowing direction and outwardly in the radial direction.

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