In response to the trend of radial tires, KOLON introduced polyester tire cord production facilities. Recently developed High Modulus Low Shrinkage(HMLS) polyester tire cords, which have superior fatigue resistance and remarkably higher thermal stability, improve the uniformity and sidewall appearance of radial tires. The Physical Properties of Polyester Yarn 1000D/250f HMLS 1500D/330f HMLS 1500D/384f HMLS 1000D/250f Reg. 1500D/250f Reg. The Physical Properties of Polyester Dipped tire cord 1000D/2P Reg. 1000D/2P HMLS 1500D/2P Reg. 1500D/2P HMLS 1000D/3P HMLS

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The Physical Properties of Polyester Yarn

Item	1000D/250f HMLS	1500D/330f HMLS	1500D/384f HMLS	1000D/250f Reg.	1500D/250f Reg.
Strength(Kg)	7.8	12.0	12.0	8.2	13.0
El(%)	4.5(@4.5kg)	5.5(@6.8kg)	5.5(@6.8kg)	5.0(@4.5kg)	5.0(@6.8kg)
EI@Break(%)	10.0	10.0	10.0	13.5	13.0
Shrinkage(%)	12.0(177'Cx2')	13.5(177'Cx2')	15.0(177'Cx2')	9.5(150'Cx30')	11.0(150'Cx30')
Denier(d)	1000	1500	1500	1000	1500
Heat Resistance(%)	93.0	90.0	90.0	90.0	90.0

The Physical Properties of Polyester Dipped Tire Cord

Item	1000D/2P(Reg.)	1000D/2P(HMLS)	1500D/2P(Reg.)	1500D/2P(HMLS)	1000D/3P(HMLS)
strength(Kg)	15.0	14.0	22.5	22.0	22.0
EI(%)	4.5(@4.5kg)	4.5(@4.5kg)	5.0(@6.8kg)	4.5(@6.8kg)	4.0(@6.8kg)
Denier(d)	2310	2400	3540	3500	3600
Shrinkage(%)	4.7(150'Cx30')	3.0(177'Cx2x20g')	7.0(150'Cx30')	3.0(150'Cx30')	3.0(177'Cx2x30g')
DPU(%)	5.0	5.5	5.0	5.0	6.0
Adhesion	12.0(T-Test)	12.0(U-Test)	16.0(U-Test)	16.0(H-Test)	12.0(U-Test)
Twist(T/10Cm)	45.0 49.0	47.0 47.0	37.0 37.0	36.0 36.0	33.0 33.0

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