Glass manufacturing – Processes – Forming product or preform from molten glass
65 2, 65 11W, 65 12, 65355, 264 8995, 425DIG217, C03B 3702
An improvement in the process of melt spinning thin walled, hollow fibers from relatively low melting glasses results if cooling of the emerging fiber is accomplished by use of a thin layer of gas to transfer heat from the fiber to a ferrule which fits closely to the spinnerette face and the individual fiber. The ferrule incorporates or is in contact with a heat sink and is slotted or segmented so that it may be brought into position around the moving fiber. Thinner walled, more uniform fibers may be spun when this method of cooling is employed.
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Lindsay, Jr. Robert L.
Stringham Robert R.
The Dow Chemical Company
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