Eco-friendly tire cord and tire using same
AssigneeHs Hyosung Advanced Materials Corporation
InventorsYoonhee NAM, Kyungmin PARK, Jin-Kyung PARK, Si-Hwan JOO
Life of this patent
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Abstract
The present invention relates to an eco-friendly tire cord and a tire using the eco-friendly tire cord, in which use of a recycled polyethylene terephthalate (PET) fiber reduces environmental load and also provides physical properties equivalent to or better than those of a tire cord that is produced by application of a virgin PET fiber and particularly, excellent heat resistance equivalent to or better than that of a tire cord produced by application of a virgin PET.
Claims6
A tire cord comprising a dip cord manufactured by twisting and dipping a recycled polyethylene terephthalate (PET) yarn made from a recycled polyethylene terephthalate (PET),
- wherein in the tire cord, a strength at room temperature (25° C.) after curing at 170° C. for 15 minutes is 18.5 kgf or more,
- a strength at 80° C. after curing at 170° C. for 15 minutes is 15.5 kgf or more,
- a heat resistance retention rate at 80° C. after curing at 170° C. for 15 minutes, which is calculated by the following numerical expression 1, is 85.0% or more, and
- a LASE (@ 5%) value which measured at a high temperature (80° C.) is 2.8 g/d or more,
- Heat
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- resistance
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- strength
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- retention
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- rate
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- (
- T
- 2
-
- 5
- -
- T
- 80
- )
- =
- (
- strength
-
- under
-
- T
- 80
-
- conditions
- /
- strength
-
- under
-
-
- T
- 25
-
- conditions
- )
- ×
- 100.
- [
- Numerical
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- Expression
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- 1
- ]
Dependencies are inferred from the claim text.