Modified cross-section lyocell material for tobacco filter, and preparation method therefor
一种横截面、过滤嘴的技术,应用在烟草、烟油滤芯、应用等方向,能够解决不能令人满意、不容易实现生物降解速率等问题,达到增加外表面积和空间占用率、高可生物降解性和环境友好性质的效果
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example 1
[0086] In order to produce lyocell fibers with improved cross-section, by combining cellulose pulp with DPw of 820 and α-cellulose of 93.9% with NMMO / H containing 0.01 wt% propyl gallate 2 O solvent mixture (weight ratio 90 / 10) was mixed such that the amount of cellulose pulp was 12 wt% based on the total weight of the mixture (this means that the concentration of the spinning solution was 12%) to first prepare Spinning solution of Cell fiber.
[0087] Next, the spinning solution is spun at a spinning temperature of 110° C. from a spinning nozzle of a spinneret having a plurality of unit holes, each of which is implemented as three holes, while adjusting the temperature of the spinning solution to be discharged. The amount and spinning speed were such that the denier per filament was 3.37 denier. The filament spinning solution discharged from the spinning nozzle is continuously fed into the coagulation solution in the coagulation bath through the air gap.
[0088] The spinni...
example 2
[0092] Lyocell crimped tow having a modified cross-section with three protrusions was produced in the same manner as in Example 1, except that each filament had a denier of 3.58.
example 3
[0094] Lyocell crimped tow having a modified cross-section with three protrusions was produced in the same manner as in Example 1, except that each filament had a denier of 14.82.
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