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AssigneeOwens-Corning Fiberglas Corporation
InventorCarl F. Rimmel
Estimating the term…
A method and system for controlling the deposition of fibers issuing from a fiberizing unit in a veil which displaces portions of the veil with fluid streams, e.g., air blasts. A moving continuous collector screen receives the veil to form a mat of fibers. Speed of the collector is coordinated with the rate of deposition in determining the amount of fiber deposited per unit length of product. Air streams directed transversely of the direction of motion of the collector displace portions of the veil toward the collector edges. Absence of the air blast permits deposition of the veil to be concentrated on the collector center region. Application of gas streams in pulses cause splitting of the veil into sections which are displaced laterally across the collector with pulse frequency generally being increased with collector speed, and center to edge weight distribution of product being coordinated with the pulse interval length and the interval between pulses. A pulse generator having independent frequency and duty cycle controls to control air valves in the conduit to nozzles supplying the air streams enables a machine attendant to control and adjust veil distribution on the collector. Electrical controls for the air valves are disclosed.
Apparatus for directing fibers during their flight in a region between two spaced operating stations comprising means for providing gas under pressure;
The method of directing fibers during their flight through a region between two spaced operating stations comprising the steps of cyclically applying bursts of gas directed into said region with a component of force transverse of the flight of the fibers;
In apparatus for forming glass fibers wherein said fibers are projected as a hollow tubular formation from the forming means toward a collecting surface, said formation being distributed upon the collecting surface through the interaction of said veil and intersecting on-off pulsating jets of gas the improvement comprising adjustable control means for independently controlling the cycle frequency and the ratio of the on to off periods during a cycle.
Apparatus for processing mineral fibers comprising a centrifuge, means for supplying heat softened mineral material to the centrifuge, means for rotating the centrifuge to project streams of the heat softened mineral material from orifices in the centrifuge wall by centrifugal forces, means for attenuating the heat softened mineral material streams into fibers and conveying said fibers axially away from the centrifuging means as a hollow tubular veil of fibers towards a collection surface, nozzle means disposed between said centrifuge and collection surface adjacent the veil of fibers for projecting intermittent gaseous blasts toward the veil of fibers to distribute the fibers upon the collection surface, control means for separately controlling the frequency of said intermittent gaseous blasts and the duration of the blast during each cycle.
Apparatus for directing wool glass fibers during their flight through regions from a plurality of rotary fiberizing units to a fiber collecting surface comprising means for providing gas under pressure;
Apparatus for distributing a veil of fibers during their deposition on a collecting surface comprising means for developing a veil of fibers directed through a region toward said collecting surface;
Dependencies are inferred from the claim text.