| 摘要 |
<p>The present invention relates to intermediate polyester fibre and to a method for the production thereof, characterized in that highly oriented undrawn polyester yarn with a degree of crystallinity in a specified range is passed under a tension of 0.3 x 10<-2> g/d to 5.0 x 10<-2> g/d through a non-contact type heater of heater temperature at least 250 DEG C, and 5-40% shrinkage effected, giving the following properties (A) <H0> Properties (A) </H0> (1) Specific gravity 1.335-1.360 (g/cm<3>) (2) Degree of crystallinity 21-26% (3) Crystal size in terms of Miller index (010) 1.4-2.2 nm, in terms of Miller index (100) 1.4-2.5 nm and in terms of Miller index (105) 1.6-3.5 (4) Degree of crystal orientation no more than 75% in the 010 plane and no more than 85% in the 105 plane and (5) Degree of amorphous orientation 0.15-0.4, hot water shrinkage 0 to 35% and dry heat shrinkage 0-35%, and furthermore, this invention relates to a method for the production of fabric of outstanding resilience, which exhibits resistance to permanent yielding (resistance to pile damage or resistance to pile slanting, etc), together with bulkiness and cushioning properties. In particular, with multilayer fabrics known as spatial fabrics such as a knitted spacer fabric, remarkable effects are obtained such as high tear strength, impact absorbance and pilling resistance. <IMAGE></p> |
