Elastic composite yarn and process for manufacturing the same
Abstract
Abstract An elastic composite yarn is provided, in which at least one high elastic filamentary binding yarn of at most 15% by weight consisting essentially of polypivalolactone is combined helically around a ground yarn of at least 85% by weight containing at least one bulked yarn, the bulked yarn extends outwardly in an arc form between adjacent points bound by the binding yarn. The elastic composite yarn is manufactured by combining the ground yarn containing at least one low heat shrinkable fiber yarn with the binding yarn which is composed of non-elasticized filament and has a shrinkage of at least 10% greater than that of the low heatshrinkable fiber yarn at a temperature from 100 degree C. to 220 degree C. so that the binding yarn is coiled around the ground yarn without elongation, and by heating the resultant composite yarn at a temperature from 100 degree C. to 220 degree C.
Inventors
- 👤 Tohru Kitawaza
Bibliographic Details
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