Sized yarn and process therefor
US5420180A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1993 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Oct 26, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2971
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A size for yarn which minimizes thread break is described. The size comprises an aqueous solution of (I) a polyvinyl alcohol resin, (II) a modified starch, and a water-soluble cellulose compound (III), wherein the components are related by the following equations: EQU (I)/(II)+(III))=85/15 to 95/5, and EQU (II)/(III)=20/80 to 80/20, while simultaneously satisfying the expressions EQU 0.27X-0.7.ltoreq.log.sub.10 Y.ltoreq.0.27X+0.6; and (1) EQU 20.ltoreq.Y.ltoreq.300; (2) EQU (A)/(B).ltoreq.0.5 (3) where X is the solid concentration in % by weight, Y is viscosity in centipoise at 90.degree. C. and a shear rate of 10 sec.sup.-1, (A) is viscosity at 60.degree. C. and a shear rate of 10,000 sec.sup.-1 of an adjusted aqueous solution resulting from the adjustment of the viscosity to 100 centipoise at 60.degree. C. and a shear rate of 10 sec.sup.-1 with said compound ratio of each of the components kept constant, and (B) is viscosity of 100 centipoise at 60.degree. C. and a shear rate of 10 sec.sup.-1 of said adjusted aqueous solution. The said aqueous solution is stuck to the yarn in an amount of 3 to 12% by weight based on the bone-dry weight thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.