Relaxation contraction - relaxation contraction

Japanese: 緩和収縮 - かんわしゅうしゅく
Relaxation contraction - relaxation contraction

...In the case of rayon, shrink-proofing can be achieved by improving water resistance through resin processing. In the case of cotton, shrink-proofing can also be achieved through resin processing, but in addition, compression shrinkage finishing such as sanforization prevents the fabric from returning to its original length in the wash water due to residual strain in the warp direction of the fabric caused by the dyeing process. This finishing method mechanically forces the fabric to shrink in the warp direction in advance by an amount equivalent to the residual strain. ...

*Some of the terminology used to refer to "easing contraction" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…レーヨンの場合には,樹脂加工を行って耐水性を向上させることにより防縮効果が得られる。綿の場合にも樹脂加工により防縮効果が得られるが,さらに,サンホライズ加工などの圧縮収縮仕上げにより,染色工程などで生じた布の経(たて)方向の残留ひずみが洗濯水中で元の長さに戻ろうとする緩和収縮を防止する。この仕上げ法は,布の経方向を残留ひずみに相当する分だけあらかじめ機械的に強制的に縮めておく方法である。…

※「緩和収縮」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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