Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1975-08-13
1976-12-28
Lindsay, Jr., Robert L.
Glass manufacturing
Processes
Forming product or preform from molten glass
28 1SM, 28 72SP, 65 11W, 242 18G, C03B 3702
Patent
active
039999718
ABSTRACT:
Crimped fibers in novel form are described in which mats of fiber are provided which are characterized by having the fibers interlocked in both horizontal and vertical directions. A method of preparing such fiber glass mats is described and involves attenuating a plurality of fibers in spaced parallel relationship at extremely high speeds and projecting them onto a collecting surface while they are traveling at high rates of speed to interrupt the flow of fibers and produce by this interruption a plurality of bends in the fibers as they are being collected. The high inertial force inherent in the fibers traveling at high speeds as they strike the collection surface imparts to the fibers a novel crimping action. By collecting a multiplicity of layers of fibers produced in this manner fiber glass mats are produced which have a needled appearance with the glass fibers constituting the mat being interlocked in a multiplicity of directions as well as in the horizontal and vertical plane. Methods of producing these fiber glass mats on collect type winders as well as on continuous belt mat surfaces are described.
REFERENCES:
patent: 2133238 (1938-10-01), Slayter et al.
patent: 2719350 (1955-10-01), Slayter
patent: 2729029 (1956-01-01), Slayter
patent: 3293013 (1966-12-01), Drummond
patent: 3532478 (1970-10-01), Drummond
patent: 3599848 (1971-08-01), Thumm
patent: 3865565 (1975-02-01), Spence et al.
Curley John E.
Lindsay, Jr. Robert L.
PPG Industries Inc.
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