| 摘要 |
<p>Provided is thread material for void-containing thread production including a minute crystal nucleus and satisfying conditions such that it is possible by stretching to stably and efficiently produce void-containing thread having a metallic luster, a high degree of reflection, and excellent aesthetics and design. Thread material for void-containing thread production for producing void-containing thread having an independent void therein, wherein: when stretched, the void is formed so as to be positioned in the interior thereof in the direction of stretching; given that the average length of the void is L (µm), and the average diameter of the void in the direction orthogonal to the direction in which the void is positioned is r (µm), then the ratio of L/r is 10 or greater; a crystal nucleus having a crystallite size of 2-5nm in a crystal surface of a (010) surface is included therein the thread material; and the degree of crystallization is 5-15%, inclusive.</p> |
