Lyocell filament fiber and cellulose based tire cord
AssigneeKolon Industries, Inc.
InventorsGi-Woong Kim, So-Yeon Kwon, Ok-Hwa Jeon, Young-Se Oh, Jong-Cheol Jeong, Woo-Chul Kim, Il Chung, Jae-Woong Lee
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Abstract
Disclosed are a lyocell filament fiber and a cellulose-based tire cord. The lyocell filament fibers and the cellulose based tire cord have good dimensional stability in a highly humid state and thus the tenacity, the elongation, and the modulus are superior to common cellulose based fibers, such as rayon and so on. Their property maintaining rate at the post manufacturing process is high and the processibility is good.
Claims15
Lyocell filament fibers, of which a swelling anisotropy defined by the following Calculation Formula 1 is 1.1 to 1.4:
- Swelling anisotropy (KF)=SdF/SlF Calculation Formula 1
- wherein
- SdF is a diameter swelling factor defined by a ratio of a fiber diameter at 25° C., 95% RH to a fiber diameter at 25° C., 65% RH, and
- SlF is a length swelling factor defined by a ratio of a fiber length at 25° C., 95% RH to a fiber length at 25° C., 65% RH.
A cellulose based tire cord, of which swelling anisotropy defined by the following Calculation Formula 4 is 1.1 to 1.4:
- Swelling anisotropy (KC)=SdC/SlC Calculation Formula 4
- wherein
- SdC is a diameter swelling factor defined by a ratio of a fiber diameter at 25° C., 95% RH to a fiber diameter at 25° C., 65% RH, and
- SlC is a length swelling factor defined by a ratio of a fiber length at 25° C., 95% RH to a fiber length at 25° C., 65% RH.
Dependencies are inferred from the claim text.