Multifilament textile yarns with hollow section, method for making same, and textile surfaces obtained from said yarns
US6565972B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2000 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Sep 29, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2975
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a multifilament textile yarn whereof the filaments or staples have a hollow section, a method for making said hollow yarn, and textile surfaces obtained from said yarns. More particularly, it concerns a method for making multifilament yarns comprising hollow filaments obtained by melt-drawing of a polyamide composition having a yarn count less than 10 dtex for each staple and whereof the staples with hollow section have a central hollow surface representing at least 5% of the total surface in said staple transfer section. The invention is characterized in that the yarn has an USTER coefficient (U %) less than 3% and a number of staple with arc-shaped section less than 30% of the total number of staples with hollow section. The flat yarns, twisted and textured are used in particular for mixing textile surfaces, such as woven or knitted fabric.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.