Equipment for producing direct melt filtration fused direct spun ultrafine denier polyurethane fibers
A technology of spandex fiber and ultra-fine denier, which is applied in the field of spandex fiber production to achieve the effects of high water absorption, strong cleaning function, elongation and uniformity
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Embodiment 1
[0010] 1. Take 75 kg of polyester polyol, 20 kg of isocyanate, and 5 kg of butanediol;
[0011] 2. Negative pressure feeding, evacuate to negative 0.8MPa pressure, feed polyester polyol raw material into the first purification tank through the first feeding valve set on the first purification tank, temperature 103-105°C, heat for 41 minutes Purify; the raw material butanediol is added into the second purification tank through the second feeding valve arranged on the second purification tank, the temperature is 106-108 ° C, and it is purified by heating for 45 minutes; the isocyanate is purified through the The third feeding valve is added to the third purification tank, the temperature is 110-112 ° C, and the heating is carried out for 50 minutes for purification;
[0012] 3. Add 0.8MPa nitrogen pressure, pass the raw material in the first purification tank through the first metering delivery pump, the raw material in the second purification tank through the second meter...
Embodiment 2
[0017] 1. Take 62 kg of polyester polyol, 30 kg of isocyanate, and 8 kg of butanediol;
[0018] 2. Feed under negative pressure, evacuate to negative 0.8MPa pressure, add polyester polyol raw material into the first purification tank through the first feed valve installed on the first purification tank, heat at 103°C for 50 minutes for purification The raw material butanediol is added into the second purification tank through the second feeding valve arranged on the second purification tank, and the temperature is 106-108 ° C, and it is purified by heating for 52 minutes; the isocyanate is passed through the third purification tank arranged on the third The feeding valve is added to the third purification tank, the temperature is 110-112°C, and the temperature is 52 minutes for purification;
[0019] 3. Add 0.8MPa nitrogen pressure, pass the raw material in the first purification tank through the first metering delivery pump, the raw material in the second purification t...
Embodiment 3
[0024] 1. Take 65 kg of polyester polyol, 30 kg of isocyanate, and 5 kg of butanediol;
[0025] 2. Feed under negative pressure, evacuate to negative 0.8MPa pressure, add polyester polyol raw material into the first purification tank through the first feed valve installed on the first purification tank, heat at 103°C for 45 minutes for purification The raw material butanediol is added into the second purification tank through the second feeding valve arranged on the second purification tank, and the temperature is 106 ° C, and it is purified by heating for 54 minutes; the isocyanate is passed through the third feeding valve arranged on the third purification tank Add to the third purification tank, temperature 110-112 ℃, heating for 550 minutes for purification;
[0026] 3. Add 0.8MPa nitrogen pressure, pass the raw material in the first purification tank through the first metering delivery pump, the raw material in the second purification tank through the second meterin...
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