The invention relates to the technical field of alpaca and cashmere blending, and discloses a
worsted alpaca and cashmere blended
fiber preparation process and an alpaca pretreatment device, comprising
raw material treatment, alpaca pretreatment, gilling,
combing, re-
carding, fore-
spinning, roving,
spinning,
spooling, doubling, two-for-one twisting and rewinding processes. According to the
worsted alpaca and cashmere blended
fiber preparation process and the alpaca pretreatment device, alpaca is pressed before an
antistatic agent is sprayed, so that a scale layer on the surface of the alpaca
fiber can be temporarily flattened, fiber gaps are enlarged, and therefore, the resistance of the
antistatic agent during
permeation can be effectively reduced; meanwhile, alpaca hair can be carded under the action of a
carding tooth group, the problem of alpaca hair fiber winding is effectively reduced, the influence on the pressed alpaca hair
fiber density is avoided, the alpaca hair sprayed with the
antistatic agent is carded and pressed again by utilizing an annular tooth group and a pressing panel of a pressing part II, and the antistatic effect of the alpaca hair is improved. The antistatic agent in the alpaca hair can effectively permeate.