POLYGONAL CROSS-SECTION FIBER, TEXTILE PRODUCT USING THE SAME AND PRODUCTION OF POLYGONAL CROSS-SECTION FIBER

摘要

PROBLEM TO BE SOLVED: To produce a light reflecting fiber capable of remarkably raising the luminance of reflected light by a relatively simple structure. ;SOLUTION: This polygonal fiber is produced by forming a staple fiber layer covering a spherical body having the elasticity of a tennis ball and forming the outer surface thereof on the outer surface from a light reflecting fiber. Furthermore, the light reflecting fiber has a cross-sectional shape forming a rectangular equilateral triangle having sharpened corners and is produced by an island-in-sea melt spinning method. An island-in-sea fiber 34 in which a plurality of the light reflecting fibers as island components 32 which are polymers or inorganic substances not readily soluble in a solvent, an alkali, by a high-temperature treatment, in hot water, etc., as opposed to a sea component 30 are axially symmetrically arranged at an equiangular interval in the interior of the sea component 30 is spun and only the sea component 30 is then removed by a physical or a chemical treatment to form the respective light reflecting fibers.;COPYRIGHT: (C)2000,JPO