无定形和结晶聚合物两者都能发生屈服并能冷拉伸。
Both amorphous and crystalline polymers can yield and be cold - drawn.
选择适当的温度和拉伸比进行热定形，可提高PTT织物的断裂强力和弹性回复率，但其延伸性变差。
The breaking strength and resilient-elasticity recovery of PTT fabric can be increased under suitable temperature and drawing ratio during heat setting, but its dilatability took worse.
在分开的拉丝机上进行拉伸、热定形、起皱和干燥步骤。
The drawing, thermal setting, creping and drying steps are carried out on a separate drawing bench.
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