Self crimpable nylon 66 carpet yarn
US4975325A · kind A · utility
3Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1988 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | Jun 29, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2929
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A melt-spinning process for producing self-crimping, nylon 66 carpet yarn at spinning speeds of, for example 4000 meters per minute is provided. The process utilizes polymer having a relative viscosity (RV) of at least 50 and containing a sufficient amount of a chain branching agent to prevent broken filaments and to provide yarn having good luster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.