Method for producing non-woven material from irregularly shaped

Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – Producing crimped – twisted – or curled fibers

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65455, 65459, 65465, 19 65R, 19 66T, 57295, 57905, C03B 37075, C03B 3704

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active

056883013

ABSTRACT:
An irregularly shaped glass fiber is provided which enjoys improved resiliency, and openness in pack structures. Wool packs and other wool portions having such irregularly shaped fibers may be processed directly through needling to form a non-woven material without intervening steps such as carding or blending of fibers which accompany conventional glass fiber processing operations. In a further aspect of the invention, a non-woven material including irregularly shaped fibers in a generally continuous wool tow is produced by "unwinding" a fiberglass wool pack collected by a direct forming method. Product applications include simplified, lower cost processing, and new uses of the irregularly shaped fibers produced by rotary fiberization in filtration elements, sorbants, gaskets, packings, shingles, composite structural elements, furnishings, textiles, yarns, and blown-in insulation systems.

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