Method and apparatus for producing hollow glass filaments
AssigneeOwens-Corning Fiberglas Corporation
InventorLarry J. Huey
Life of this patent
Estimating the term…
Abstract
A feeder for the production of hollow glass filaments is comprised of tip assemblies wherein a tube positioned in the stream defining member is in communication with the gas in the fiber forming region immediately below the dischrge wall to form a gas filled void in the stream and filament.
Claims23
A tip assembly for use in a feeder for the production of hollow glass filaments comprising:
- a first tubular member fastened to a discharge wall of the feeder and adapted to receive a flow of molten glass therethrough, and
- a second tubular member positioned within the first tubular member, the second tubular member having a passageway in communication with the region immediately adjacent the exterior of the first tubular member, outwardly of said discharge wall, to permit the gas of the region to move from that region through the passageway of the second tubular member into the flow of molten glass to produce a hollow filament.
A bushing for the production of hollow filaments from heat softened inorganic material comprising:
- a discharge wall having a plurality of orifices;
- a plurality of first tubular members attached at the orifices of the discharge wall adapted to receive a flow of molten material therethrough, such first tubular members having a sleeve segment extending outwardly from the discharge wall adapted to define the flow of molten material into streams;
- and
- second tubular members positioned within the first tubular members, such second tubular members having a passageway in communication with the region immediately adjacent the exterior of the first tubular member and the discharge wall to permit the gas occupying that region to continuously move from that region through the passageway to the interior of the stream of molten material flowing from the first tubular member to produce hollow filaments.
A bushing for the production of hollow continuous filaments from molten mineral material comprising:
- a discharge wall having a plurality of orifices therethrough adapted to define the molten material into streams for attenuation into filaments;
- and
- a plurality of conduits positioned immediately outwardly adjacent the discharge wall, such conduits having a passageway extending from within the interior of the stream of molten material to the ambient region around the streams immediately outwardly adjacent the discharge wall to permit the gas occupying that region to move continuously from that region through the passageway into the interior of the stream of molten material to produce hollow, continuous filaments therefrom.
The method of producing a hollow inorganic filament comprising:
- supplying a stream of molten inorganic material through the bottom wall of a feeder;
- moving gas from immediately downwardly of the wall and adjacent the exterior of the stream into the interior of the stream to form a void therein;
- and attenuating the void containing stream into a filament.
The method of producing a hollow filament from a stream of molten glass comprising:
- moving molten glass through a stream defining member, the member having a wall;
- moving the gas exteriorly surrounding the stream defining member through the wall of the member into the interior of the stream to continuously form a void therein;
- and
- attenuating the void containing stream into a filament.
Dependencies are inferred from the claim text.