Undrawn polyethylene terephthalate (PET) fiber, drawn PET fiber, and tire-cord comprising the same
US9005754B2 · kind B2 · utility
2Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2009 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Jun 9, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2933
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to an undrawn PET fiber and a drawn PET fiber those can provide a cap ply cord and the like showing more improved modulus and good dimensional stability, and a tire cord including the same. The undrawn PET fiber may be a fiber of which the crystallinity is 25% or more, the birefringence index is 0.085 to 0.11, the amorphous orientation factor (AOF) is 0.15 or less, and the melting temperature (Tm) is 258° C. or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.