Formation of nonwoven webs or batts from continuous filament tow or yarn strands
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United States of America Patent
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May 7, 1985
Grant Date -
N/A
app pub date -
Mar 7, 1983
filing date -
Mar 7, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and machine for forming nonwoven batts containing refractory fibers such as carbon, glass, ceramic or metallic fibers, includes a conveying table (12) provided with scalloped rollers (90, 92) which separate tows of filaments (16) and spread the filaments on a conveying table. A feed roller (80) holds the filaments on the table so that they are conveyed to a rotating lickerin (60). The lickerin (60) is provided with teeth (62) which grasp the filaments so that a tensile force is applied thereto, thereby breaking the filaments at structurally weak points in the filaments. The fibers are mixed with textile fibers and transferred to a foraminous condenser (144) by blowing the fibers through a duct (112). The fibers are arranged on the conveyor (114) in a random fashion to form a batt.
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