Manufacture of staple glass fibers

Glass manufacturing – Processes – Forming product or preform from molten glass


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83347, 83913, C03D 37025




A method of manufacture of staple glass fibers by drawing a plurality of glass filaments, from a bushing and chopping them directly into staple fibers without intervening winding and storage is characterized by initiating the drawing by forming the filaments into a coil on the circumference of an auxiliary roller, forming an initial winding by rotating the roller with progressively increasing surface speed until the filaments advancing towards the roller attain the normal production drawing speed for the bushing, then diverting the filaments while still travelling at that speed, and without breaking them, into driving contact with a cutter back-up roll driven with substantially the same surface speed as the production speed, advancing the diverted filaments by means of the roll into a cutting zone whereat they are both severed from the initial winding and continuously chopped into staple fibers.

patent: 2846157 (1958-08-01), Stephens et al.
patent: 4175939 (1979-11-01), Nekazawa


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