In line process for sequentially forming and shaping a filament

Details In line process for sequentially forming and shaping a filament In line process for sequentially forming and shaping a filament

1984-06-06

1986-09-23

Czaja, Donald

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 25, 264 26, 264167, 2642104, 2642108, 2642893, 2642905, 2642907, 2642888, B29C 3510, D01D 520

Patent

active

046134700

ABSTRACT:
A fibre (1), which may be an artificial polymeric, glass or glass-fibre fibre, is treated by exposing it to an energy flux (2) so that the fibre absorbs energy differentially along its length, and the cross-section of the fibre is altered in response to the varying amounts of energy absorbed along the length of the fibre, to yield a fibre which has intermittent zones of relatively reduced cross-section. Preferably the fibre is drawn past an energy beam which is pulsed or oscillated across the fibre path. The fibre may be exposed while it is being formed by drawing it under tension from a spinneret nozzle, and is further stretched after exposure to the beam to form intermittent necks (3) in the fibre. The novel fibres may be used in textile applications or as reinforcing elements in composite materials.

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patent: 4129433 (1978-12-01), Jaeger et al.
patent: 4138298 (1979-02-01), Bobeth et al.
patent: 4190623 (1980-02-01), Bobeth et al.
patent: 4247496 (1981-01-01), Kawakami et al.
patent: 4430277 (1984-02-01), Lin

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