1.5 x 108 Pa and EB'(90) > 5.0 x 10 7 Pa respectively, with the storage elastic modulus curves of E A' and EB' crossing each other and which exhibits a heat shrinkage of 30 to 60% in the direction of main shrinkage after the immersion in warm water at 800C for 10 seconds and a heat shrinkage of ±5% or below in the direction perpendicular thereto in the range of 70 to 800C.">
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