Wet spinning method of cellulose carbamate
A urethane and wet spinning technology, which is applied in the field of technology, can solve problems such as technical barriers, difficulties in overcoming, and difficulties in solvent recovery, and achieve the effects of shortening the process flow, improving production efficiency, and reducing equipment investment
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Embodiment 1
[0017] A wet spinning method of cellulose carbamate, the method is as follows, the dissolved glue is transported into a filter through a pump for filtration and then enters a storage tank, and the waste glue that is filtered and backwashed enters the waste glue recycling system. The glue in the storage tank is pumped into the plate heat exchanger and enters the continuous vacuum defoamer. The temperature of the plate heat exchanger is set at 25 degrees so that the temperature of the glue entering the continuous vacuum defoamer is also around 25 degrees. , the absolute vacuum degree in the continuous vacuum degasser is controlled at 97mpa.s. The degassed glue is pumped into the secondary filter for filtration and enters the pre-spinning storage tank, and the waste glue that is filtered and backwashed also enters the waste glue recovery system. The glue in the pre-spinning storage tank is pumped into the spinning machine for spinning. In the spinning machine, the glue goes thro...
Embodiment 2
[0020] A wet spinning method of cellulose carbamate, the method is as follows, the dissolved glue is transported into a filter through a pump for filtration and then enters a storage tank, and the waste glue that is filtered and backwashed enters the waste glue recycling system. The glue in the storage tank is pumped into the plate heat exchanger and enters the continuous vacuum defoamer. The temperature of the plate heat exchanger is set at 20 degrees so that the temperature of the glue entering the continuous vacuum defoamer is also around 20 degrees. , the absolute vacuum degree in the continuous vacuum degasser is controlled at 99mpa.s. The degassed glue is pumped into the secondary filter for filtration and enters the pre-spinning storage tank, and the waste glue that is filtered and backwashed also enters the waste glue recovery system. The glue in the pre-spinning storage tank is pumped into the spinning machine for spinning. In the spinning machine, the glue goes thro...
Embodiment 3
[0023] A wet spinning method of cellulose carbamate, the method is as follows, the dissolved glue is transported into a filter through a pump for filtration and then enters a storage tank, and the waste glue that is filtered and backwashed enters the waste glue recycling system. The glue in the storage tank is pumped into the plate heat exchanger and enters the continuous vacuum degasser. The temperature of the plate heat exchanger is set at 27 degrees so that the temperature of the glue entering the continuous vacuum degasser is also around 27 degrees. , the absolute vacuum degree in the continuous vacuum degasser is controlled at 98mpa.s. The degassed glue is pumped into the secondary filter for filtration and enters the pre-spinning storage tank, and the waste glue that is filtered and backwashed also enters the waste glue recovery system. The glue in the pre-spinning storage tank is pumped into the spinning machine for spinning. In the spinning machine, the glue goes thro...
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