Laser-markable fibers or fiber products
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United States of America Patent
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Issued Date -
Nov 16, 2006
app pub date -
May 14, 2004
filing date -
May 14, 2003
priority date (Note) -
Abandoned
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Abstract
The present invention provides a fiber or fiber product comprising an artificial fiber and filler incorporated therein, the filler being a filler whose own color changes or a filler mixture whose entire color appears to change by irradiation with a laser beam. The filler whose own color changes by irradiation with a laser beam is preferably barium sulfate or diantimony. The filler is usually in the form of particles with a mean particle diameter of not more than about 15 .mu.m. When the fiber or fiber product of the invention is irradiated with a laser beam, the fiber changes color in the irradiated portion, so that a minute mark can be produced on the individual spun yarns or filament yarns of the fiber or fiber product.
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