The invention discloses an ultrathin semi-
worsted nap up blazer fabric and a preparation process thereof. The fabric comprises Australian
wool short
cutting, cotton cashmere,
polyester loose
fiber and
modal lose
fiber; the preparation method comprises the steps that raw materials are dyed, opened, blended and stuffed by
wool loosing and
dyeing processes; then, roving is prepared by
carding and two
wool line blending by a
carding machine and the roving is spun into a single
yarn by a
spinning frame; after being automatic winding, the single
yarn is doubling and then is twisted into semi-
worsted double
yarn; by the adoption of same
longitude and
latitude mode, the semi-
worsted double yarn is woven into gray fabric on a weaving
machine; the step gray fabric is put into water to wash for the first time, and then put into a scouring and milling combined
machine to mill, the gray fabric after the milling is placed into a steel-wire napper to
nap, and then, is set and dried after being brushed by a damping brushing machine, the dried gray fabric is lustered and sheared, and finally, the ultrathin semi-worsted
nap up blazer fabric is obtained by decating. The ultrathin semi-worsted nap up blazer fabric and the preparation process thereof use semi-worsted
spinning, are combined with a roving fabric nap up process and prepare the ultrathin semi-worsted fabric which is good in quality, soft, comfortable and warm-keeping.