Method of restarting operations for manufacturing filaments of a

Details Method of restarting operations for manufacturing filaments of a Method of restarting operations for manufacturing filaments of a

1989-02-10

1990-05-15

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

264169, 65 1, C03B 3702

Patent

active

049254715

ABSTRACT:
In a method of restarting operations for manufacturing filaments from a molten mass of a thermoplastic material after the occurrence of the breaking of a filament, the filaments being drawn at a regular, high speed from a large number of orifices formed in the bottom of a bushing, a bead of the molten mass formed at an orifice where the breaking of a filament occurs is detected to thereby generate a signal; the speed of elongating the filaments is reduced upon receiving the signal so that a filament elongated in the vicinity of the bead at the reduced speed is brought into contact with the bead elongated by gravity, and elongates the bead into a filament having a larger diameter, during which operations to produce a regular filament product are stopped; and the speed of elongating the filaments is increased to the regular speed.

REFERENCES:
patent: 3979195 (1976-09-01), Strickland
patent: 3982915 (1976-09-01), Coggin
patent: 4088467 (1978-05-01), Shono et al.
patent: 4130406 (1978-12-01), Wakasa et al.
patent: 4473386 (1984-09-01), Strickland

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