Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1976-10-27
1977-12-06
Lindsay, Jr., Robert L.
Glass manufacturing
Processes
Forming product or preform from molten glass
65 6, 65 9, 65 14, 65161, 156 624, 264 8, 264 12, 425 66, C03B 3704
Patent
active
040614859
ABSTRACT:
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.
REFERENCES:
patent: 2653416 (1953-09-01), Slayter
patent: 2863493 (1958-12-01), Snow et al.
patent: 2897874 (1959-08-01), Stalego et al.
patent: 3265481 (1966-08-01), Smock et al.
patent: 3599848 (1971-08-01), Thumm et al.
Lindsay, Jr. Robert L.
Overman John W.
Owens-Corning Fiberglas Corporation
Schroeder Charles F.
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