Raw silk volume ratio - Silk volume ratio

...Cocoon inspection involves the visual selection of defective cocoons among the cocoons available for inspection, using certain criteria, and calculating the ratio of selected cocoons (the ratio of defective cocoons to the total amount of cocoons available for inspection). A reeling inspection is then carried out on the refined cocoons remaining after removing the defective cocoons from the cocoons available for inspection, and the raw silk yield ratio (the ratio of raw silk obtained from reeling a certain amount of cocoons), cocoon thread length (the length of cocoon thread obtained from one cocoon), and reeling rate (the number of cocoon threads cut during reeling) are inspected, and the cocoon grade is determined by combining the reeling rate, which affects the reeling value, and the cocoon thread length, which affects the quality value. The grades are divided into five grades, from top to bottom: excellent, first, second, third, and fourth....

*Some of the terminology used in relation to "raw silk volume ratio" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…繭検定は，肉眼によって検定供用繭中に混入する不良繭を一定の基準により選除し，選除繭歩合(検定供用繭に対する不良繭量の割合)を算出する。供用繭から不良繭を除いた精繭について繰糸検査を行い，生糸量歩合(一定量の繭を繰糸して得られる生糸量の割合)，繭糸長(1粒の繭から得られる繭糸の長さ)，解舒率(繰糸中の繭糸の切断数の多少)などを検査し，解舒価値にかかわる解舒率と品位価値にかかわる繭糸長成績を総合して繭格を決める。その等級は上位から優等格，1等格，2等格，3等格および4等格の5等級に分けられている。…

※「生糸量歩合」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