Petal-shaped cross-section thread

Japanese: 花弁状断面糸 - かべんじょうだんめんし
Petal-shaped cross-section thread

...General term for artificially made fibers as opposed to natural fibers. Also called chemical fibers for short. Also called man-made fibers, this term is used in the narrow sense to refer to artificial fibers excluding synthetic fibers. Chemical fibers are classified into synthetic fibers, semi-synthetic fibers, regenerated fibers, and inorganic fibers. The table below shows the classification of chemical fibers.
【history】
The idea of ​​making fibers artificially has been around for a long time, but it wasn't put into practice until the 19th century. Efforts began to make a high-quality, silk-like synthetic fiber (called artificial silk, or rayon for short) from cheap natural cellulose fibers such as cotton.

*Some of the terminology explanations that refer to "petal-shaped cross-section thread" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…天然繊維に対して人工的に作られる繊維の総称。略して化繊ともいう。人造繊維ともいうが,これは狭義には合成繊維を除いた人工的な繊維に使われる。化学繊維は,合成繊維,半合成繊維,再生繊維,無機繊維に分類される。表に化学繊維の分類を示す。
【歴史】
 繊維を人工的に作ろうというアイデアは古くからあったが,具体化されたのは19世紀に入ってからである。綿のような安価なセルロース系天然繊維から高級な絹に似た人工繊維(人造絹糸,略して人絹ともいう)を作ろうという努力が始まった。…

※「花弁状断面糸」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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