Method for transporting glass fibers
AssigneeOwens-Corning Fiberglas Corporation
InventorDale Kleist
Life of this patent
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Abstract
A method and apparatus for reducing tension due to air drag in continuous filaments moved at high linear speeds by establishing a contoured air passage surrounding the filaments and moving air in the direction of the movement of the filaments at a velocity substantially equal to the velocity of the moving filaments. The method and apparatus are described in relation to a glass fiber process wherein the filaments are attenuated at high linear speeds.
Claims9
A method for reduction of tension in continuous filaments formed from heat-softened filament forming material wherein the tension in the filaments is due to movement of such filaments at a high linear speed through air comprising:
- mechanically attenuating streams of the heat-softened filament forming material into fine filaments;
- linearly advancing the filaments through a passageway at a known rate of speed;
- and,
- moving air in the passageway in the same direction and at substantially the same speed as the advancing filaments to reduce tension in the advancing filaments from the effects of air drag, the air and filaments being moved at substantially the same speed through a major portion of the passageway.
A method for reducing the tension due to air drag in continuous fibers moved at a high linear speed, comprising:
- mechanically advancing the fibers at a known speed through a duct having a constant cross sectional area;
- moving air in the duct in the same direction as the advancing fibers;
- and,
- controlling the speed of the air so that the air is moved at substantially the same speed as the advancing fibers to reduce tension in the advancing fibers from the effects of air drag, the air and the fibers being moved at substantially the same speed through a major portion of the duct.
Dependencies are inferred from the claim text.