Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1976-03-02
1977-01-18
Drummond, Douglas J.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156180, 156250, 83 14, 83 15, 19 66T, 427289, 427434D, 264143, 264136, B26D 708, B02C 2300
Patent
active
040037738
ABSTRACT:
A process for cutting a multi-filament tow into fibers of ultra-short length and narrow size distribution is provided. Initially, a multi-filament tow is passed through a bath of liquid impregnating material at elevated temperature. The impregnated tow is then passed through a die which is sized to control the quantity of material impregnating the tow and to compact the filaments of the tow into a closely packed bundle. The resulting tow is then cooled to solidify the impregnating material and to convert the tow to a rigid form. The rigid tow is then cut, yielding wafer-thin disks. The impregnating material is then stripped from the wafer-thin disks with a solvent followed by removal of the solvent, thereby yielding fibers of ultra-short length and narrow size distribution.
REFERENCES:
patent: 2516559 (1950-07-01), Fuhrhop et al.
patent: 3549734 (1970-12-01), Yasuda et al.
patent: 3632366 (1972-01-01), Hiraga
patent: 3634570 (1972-01-01), Himelreich et al.
patent: 3921874 (1975-11-01), Spain
patent: 3940464 (1976-02-01), Davis
Ball M.
Drummond Douglas J.
Hercules Incorporated
Keehan Michael B.
Miller Clinton F.
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