Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1994-06-20
1996-06-11
Aftergut, Jeff H.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
19 046, 19 06, 53527, 83913, 156155, B26D 708, B02C 2300
Patent
active
055251803
ABSTRACT:
Chopped fiber strands are produced by (1) wetting a continuous unsized fiber tow with a volatile sizing agent, (2) chopping the wet fiber tow into predetermined lengths, and (3) exposing the chopped fibers to conditions of temperature and pressure that remove the sizing agent by volatilizing but do not cause any structural changes in the fiber. Bundles of the unsized fibers have a high bulk density and are easily dispersible in air or other media to individual filaments or groups of small numbers of individual filaments. The process is especially useful for producing high bulk density packages of polyacrylonitrile-based carbon fibers.
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Paul, Jr. James T.
Schimpf Warren C.
Aftergut Jeff H.
Hercules Incorporated
Patterson Joanne W.
Szanto Ivan G.
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