When the prewetting sizing has the same extrudation moisture regain of sized yarns and the same size concentration as the traditional sizing process, prewetting sizing leads to lower size pick-up.

• 结果表明：当传统上浆和预湿上浆的浆纱压出回潮率以及浆槽中浆液质量分数相同时，预湿上浆必然导致浆纱上浆率的降低；