Lyocell material for cigarette filter, and preparation method therefor

The present invention relates to a method for preparing a lyocell material for a cigarette filter, comprising the steps of: (S1) spinning a lyocell spinning dope comprising 8-13 wt% of cellulose pulp and 87-92 wt% of an N-methylmorpholine-N-oxide (NMMO) aqueous solution;(S2) obtaining a lyocell multifilament by solidifying the lyocell spinning dope spun in step (S1);(S3) washing the lyocell multifilament obtained in step (S2);(S4) oil-treating the lyocell multifilament washed in step (S3); and (S5) obtaining crimped tow having 30-40 crimps per inch provided therein, by applying steam and pressure to the lyocell multifilament obtained in step (S4). 本发明涉及种制造用于香烟过滤嘴的莱赛尔材料的方法，包括：(S1)对包含8wt％至13wt％的纤维素浆料和87wt％至92wt％的N-甲基吗啉-N-氧化物(NMMO)水溶液的莱赛尔纺丝液进行纺丝；(S2)使在(S1)中纺丝后的所述莱赛尔纺丝液凝固，从而得到莱赛尔复丝；(S3)对在(S2)中得到的所述莱赛尔复丝进行水洗；(S4)对在(S3)中水洗后的所述莱赛尔复丝上油；以及(S5)向在(S4)中得到的所述莱赛尔复丝施加蒸汽和压力，从而得到每英寸具有30至40个卷曲的卷曲丝束。