| 摘要 |
<p>A non-woven fleece article composed of continuous tubular filaments of a spun and stretched synthetic fiber-forming polymer, especially a yarn composed of continuous hollow tubular polyethylene terephthalate filaments, wherein individual permanently crimped filaments have a yarn size of about 0.5 to 20 denier, a crimping arc number of 50 to 120 arcs per 10 cm. and a hollow volume of its tubular structure of 10 to 30 percent. The final desired article is one in which a fleece has been formed by coiling or layering a yarn consisting essentially of these filaments after the yarn has been subjected to a temporary elongation within the range or region of the stress-strain curve which produces an elastic strain but under a load of at least 0.1 grams/denier, the permanent extension or set of the filaments being less than 4 percent, and then releasing the tension on the yarn whereby the crimped structure of the filaments is reformed and the yarn spreads out laterally. The resulting coiled or layered yarn product is useful as a fleece-like filler material in pillows, quilts, jackets and the like.</p> |
