New fabrics, yarns and process
AssigneeE. I. Du Pont de Nemours and Company
InventorJohn S. Franklin
Life of this patent
Estimating the term…
Abstract
Scalloped-oval cross-section for low denier filaments of partially-oriented polyester for new draw-texturing feed yarn, and a new process of draw-texturing to prepare corresponding polyester textured yarns for use in combination spun yarn/textured polyester yarn fabrics, and such combination and other new fabrics.
Claims4
An improved combination woven fabric, comprising textured continuous filament polyester warp yarns in combination with spun filling yarns, the improvement characterized in that said textured continuous filament polyester yarns comprise filaments of denier about 1 to about 4.5 derived by draw-texturing feed yarn filaments of elongation to break about 80 to 180% and of scalloped-oval cross-section with average dimensions within the following ranges:
- A/B from 1.4 to 2.4;
- r.sub.1 /R from 0.2 to 0.45;
- r.sub.2 /r.sub.1 from 0.8 to 2.1;
- d/r.sub.1 from 1.2 to about 2;
- whereby the fabric has the combination of a soft hand and natural luster without objectionable glitter.
An improved combination woven fabric, comprising textured continuous filament polyester filling yarns in combination with spun warp yarns, the improvement characterized in that said textured continuous filament polyester yarns comprise filaments of denier about 1 to about 4.5 derived by draw-texturing feed yarn filaments of elongation to break about 80 to 180% and of scalloped-oval cross-section with average dimensions within the following ranges:
- A/B from 1.4 to 2.4;
- r.sub.1 /R from 0.2 to 0.45;
- r.sub.2 /r.sub.1 from 0.8 to 2.1;
- d/r.sub.1 from 1.2 to about 2;
- whereby the fabric has the combination of a soft hand and natural luster without objectionable glitter.
Dependencies are inferred from the claim text.