Viscose monofilament production process
A production process and viscose technology, applied in the direction of artificial filament made of viscose, spinneret assembly, cellulose/protein artificial filament chemical post-treatment, etc., can solve the problem of not meeting market demand and affecting fabric wear Performance, viscose monofilament low fineness and other problems, to achieve the effect of ensuring spinnability, uniform product width and good spinnability
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Embodiment 1
[0037] A production process of viscose monofilaments, using cellulose fiber pulp as raw material, preparing viscose monofilaments through spinning solution preparation-spinning-after treatment, specifically including the following process steps:
[0038] A spinning solution preparation
[0039] Cellulose fiber pulp is soaked, aged, yellowed, dissolved, defoamed and filtered to obtain spinning solution;
[0040] B spinning
[0041] The spinning solution is sent into the spinning machine by the glue supply pipeline, and is sent quantitatively by the metering pump. The spinning solution passes through the single-hole nozzle and passes through the spinneret hole under pressure to form a fine flow of viscose, which then enters the coagulation bath. After solidification and molding, raw silk strips are formed.
[0042] The nozzle stretching +60%;
[0043] The shape of the entrance channel of the spinneret hole is a parabola;
[0044] The spinning speed of described spinning mach...
Embodiment 2
[0050] Basically the same as embodiment 1, on this basis:
[0051] The nozzles described are stretched +80%.
[0052] The inlet channel of the spinneret hole is a parabola, and the spinneret hole is circular, and the ratio of the length of the inlet channel to the diameter of the spinneret hole is: 1.5:1.
[0053] The spinning speed of the spinning machine is 80m / min.
[0054] The composition of the coagulation bath is: sulfuric acid 140g / L, sodium sulfate 250g / L, zinc sulfate 30g / L; the temperature is 55°C.
[0055] The cellulose pulp is wood pulp.
[0056] The fineness of the obtained viscose monofilament is 50D, the strength reaches 80CN, the dry breaking strength is 2.0CN / dtex, the wet breaking strength is 1.5CN / dtex, and the dry breaking elongation is 20%.
Embodiment 3
[0058] Basically the same as embodiment 1, on this basis:
[0059] The nozzles described are stretched +70%.
[0060] The inlet channel of the spinneret hole is a parabola, and the spinneret hole is circular, and the ratio of the length of the inlet channel to the diameter of the spinneret hole is: 1.2:1.
[0061] The spinning speed of the spinning machine is 50m / min.
[0062] The composition of the coagulation bath is: sulfuric acid 120g / L, sodium sulfate 210g / L, zinc sulfate 25g / L; the temperature is 46°C.
[0063] The cellulose pulp is bamboo pulp.
[0064] The fineness of the obtained viscose monofilament is 6000D, the strength reaches 85CN, the dry breaking strength is 1.6CN / dtex, the wet breaking strength is 1.2CN / dtex, and the dry breaking elongation is 18%.
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