Apparatus and method for converting continuous tow fibers into a

Details Apparatus and method for converting continuous tow fibers into a Apparatus and method for converting continuous tow fibers into a

1997-09-11

1999-03-09

Neas, Michael A.

Textiles: fiber preparation

Stapilizing

Tension breaking

19 039, 19 056, 19 06, 83913, 21912167, 21912172, D01G 104

Patent

active

058784640

ABSTRACT:
An apparatus and method enables a synthetic fiber tow of indeterminate length passed through a break drawframe to be converted to relatively short spinnable staple length fibers in the form of sliver. During passing through the drawframe, a concentrated beam of energy, illustrated as being a laser beam is swept across the tow by a rotating mirror and in the course of doing so, effectively cuts the tow fibers where struck by the laser beam. In one embodiment the laser beam stays on while sweeping across the width of the tow and then repeats that cycle in a succeeding section of tow. In another embodiment, the laser beam is energized and deenergized as it transverses across one section of tow and in the next succeeding section of tow the laser beam is actuated in a different time cycle.

REFERENCES:
patent: 2431048 (1947-09-01), Smith
patent: 2569957 (1951-10-01), Schneider
patent: 3757077 (1973-09-01), Sinclari et al.
patent: 5011282 (1991-04-01), Ream et al.
patent: 5400476 (1995-03-01), White
Title, copyright notice pages; pp. 286-287 "lasers in industry", edited by S.S. Charschan, Member of Research Staff, Western Electric.
Title, copyright page; page 46 "Man-Made Fiber And Textile Dictonary" by Celanese Corporation.
Updated cover page; pp. 3-10 and technical characteristics page from trade brochure describing TT12 Converter made by R. Schlumberger & Cie of France .

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