Bulky yarn

Japanese: 嵩高糸 - かさだかいと
Bulky yarn

... refers to bulky yarns made by utilizing the thermoplasticity of synthetic fibers, and are classified as bulky spun yarns and bulky processed filament yarns. There are the following methods of bulky processing to produce bulky yarns. Bulky spun yarns are made by blending short fibers made from thermally stretched and unstretched fibers before cutting into short fibers to produce spun yarns, which are then treated with hot water or steam. Only the thermally stretched fibers shrink, causing the unstretched fibers to rise, resulting in a bulky yarn.

*Some of the terminology that refers to "bulky yarn" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…合成繊維の熱可塑性を利用してつくるかさ(嵩)高糸をいい,かさ高紡績糸とかさ高加工フィラメント糸に分類される。バルキーヤーンを製造するバルキー加工には次のような方法がある。かさ高紡績糸は,短繊維に切断する前に熱延伸したものと,延伸しないものとからつくった短繊維を混紡して紡績糸とし,これを熱水または蒸気で処理して得られるもので,熱延伸した繊維だけが縮むため,延伸しない繊維が浮き上がり,かさ高な糸となる。…

※「嵩高糸」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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