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AssigneeUeda Textile Science Foundation
InventorsYutaka Ohkoshi, Toshifumi Ikaga, Wataru Okumura, Atsushi Kobayashi, Takayoshi Yamaguchi
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A high-strength synthetic fiber is fabricated in such a way that a fiber, such as a polyester fiber, nylon fiber, or polyether ketone fiber, is irradiated with an infrared beam and is drawn while its thread is heated and softened at temperatures higher than a glass transition temperature. An apparatus for fabricating a fiber is provided with a means (10) for continuously feeding a thread (1) at a constant feed rate (v) and an infrared irradiation means (13) including a laser for irradiating the thread (1) with an infrared beam, interposed between the means (10) for feeding the thread and a fiber winding means (11) for winding the thread (1) at a winding rate (V) higher than the constant feed rate (v), in order to soften the thread (1) traveling to be fed and wound.
A high-strength synthetic fiber comprising a fiber material of polyester fiber having an initial elastic modulus of 18-40 Giga Pascal and a boil-off shirnkage of less than 4%, that is fabricated by being irradiated with an infrared beam and being drawn while a thread thereof is heated and softened at temperatures higher than a glass transition temperature.
Dependencies are inferred from the claim text.