抄録
Dimensional stability of vinylon fabrics under various washing conditions was studied. Various vinylon fibers were prepared in sodium hydroxide and sodium sulfate coagulating bath. These fibers were spun into 20'S single yarns on the cotton system and woven into plain fabrics. The total area shrinkage of gray fabrics of vinylon prepared in the sodium sulfate coagulating bath is generally larger than that of vinylon prepared in the sodium hydroxide coagulating bath. In the former fabrics, the shrinkage of BMMF-f is larger than that of BLMF. In the latter fabrics, their shrinkage after washing without agitation at 20°C is mainly influenced by degree of total drawing of fibers, and that after washing with agitation at 20°C and without agitation at 100°C is affected by degree of total drawing and formalization of the fibers. The degree of formalization of fibers influences considerably to the shrinkage of the same fabrics after washing with agitation at 100°C. Fabrics from fibers of high degree of total drawing and formalization have good dimensional stability. It is observed that dimensional stability of fabrics is influenced to a very great extent by temperature and agitation during washing. There are not so large difference in corrected total area shrinkage among gray, scoured and water proof finished fabrics. But it decreases slightly after scouring and water proof finishing for formalized vinylon fabrics. And it increases for not formalized vinylon fabrics such as AHN, ALN. Total area shrinkage of fabrics pressed after washing is larger than that of unpressed fabrics. Detergent in washing has no effect on the dimensional stability of fabrics. Fibers and yarns removed from fabrics after washing shrink to some extent, but that shrinkage is smaller than that of fabrics.
