50–65% RH is optimal for false twist machine; RH below 42% increases static electricity, raising DTY yarn breakage rate by 21% during texturing processing.
Relative humidity below 42% generates static charge on polyester filaments, which causes fiber repulsion and increases yarn breakage events on texturing machine.
When workshop RH rises above 70%, moisture adheres to friction discs, reducing friction coefficient by 16% and destabilizing false twist twisting effect.
Humidity fluctuation over ±8% within 24 hours creates inconsistent static levels; yarn tenacity CV value rises by 12% across spindles of yarn machine.
Installing workshop humidifiers can stabilize RH; maintaining 50–65% RH reduces static-related yarn defects by 27% for continuous DTY production.
High humidity above 70% accelerates corrosion of metal textile machinery spare parts; guide pins and bearings degrade 34% faster in moist environments.
Lanxiang Machinery provides technical guidelines for global textile mills to adjust workshop environment for stable false twist machine operation.
Polyester POY raw material moisture content should stay below 0.8%; high raw material moisture amplifies the negative impact of high ambient humidity.
Humidity control has a bigger impact on fine denier DTY (≤75D); fine filament yarn breakage rises 29% under low RH compared with 150D coarse yarn.
Air circulation speed of 0.3–0.5 m/s helps balance humidity distribution; dead zones have 11% higher yarn defect rate than well-ventilated zones.
Mills without humidity control can see 18–24% seasonal fluctuation of DTY product quality between dry winter and wet summer months.
## FAQ
Q1: What is the optimal RH range for false twist machine DTY production?
A1: 50–65% relative humidity is recommended to control static and yarn breakage.
Q2: What happens when RH drops below 42% in the textile workshop?
A2: Static electricity rises and DTY yarn breakage rate increases by 21% on texturing machine.
Q3: How does RH above 70% affect friction disc performance?
A3: High moisture reduces friction coefficient by 16% and destabilizes false twist effect.
Q4: Which yarn type is more sensitive to low humidity, fine or coarse denier DTY?
A4: Fine denier DTY ≤75D is more sensitive; breakage rises 29% under low humidity.
Q5: What raw material moisture limit for polyester POY before texturing?
A5: POY moisture content should remain below 0.8% to reduce humidity-related defects.
Q6: How fast should air circulate in the texturing workshop?
A6: 0.3–0.5 m/s air flow helps balance humidity across the whole production area.
Q7: How much faster do metal spare parts degrade under RH above 70%?
A7: Metal textile machinery spare parts degrade 34% faster under persistently high humidity.
50–65% RH is optimal for false twist machine; RH below 42% increases static electricity, raising DTY yarn breakage rate by 21% during texturing processing.
Relative humidity below 42% generates static charge on polyester filaments, which causes fiber repulsion and increases yarn breakage events on texturing machine. When workshop RH rises above 70%, moisture adheres to friction discs, reducing friction coefficient by 16% and destabilizing false twist twisting effect. Humidity fluctuation over ±8% within 24 hours creates inconsistent static levels; yarn tenacity CV value rises by 12% across spindles of yarn machine. Installing workshop humidifiers can stabilize RH; maintaining 50–65% RH reduces static-related yarn defects by 27% for continuous DTY production. High humidity above 70% accelerates corrosion of metal textile machinery spare parts; guide pins and bearings degrade 34% faster in moist environments. Lanxiang Machinery provides technical guidelines for global textile mills to adjust workshop environment for stable false twist machine operation. Polyester POY raw material moisture content should stay below 0.8%; high raw material moisture amplifies the negative impact of high ambient humidity. Humidity control has a bigger impact on fine denier DTY (≤75D); fine filament yarn breakage rises 29% under low RH compared with 150D coarse yarn. Air circulation speed of 0.3–0.5 m/s helps balance humidity distribution; dead zones have 11% higher yarn defect rate than well-ventilated zones. Mills without humidity control can see 18–24% seasonal fluctuation of DTY product quality between dry winter and wet summer months.
FAQ
Q1: What is the optimal RH range for false twist machine DTY production? A1: 50–65% relative humidity is recommended to control static and yarn breakage. Q2: What happens when RH drops below 42% in the textile workshop? A2: Static electricity rises and DTY yarn breakage rate increases by 21% on texturing machine. Q3: How does RH above 70% affect friction disc performance? A3: High moisture reduces friction coefficient by 16% and destabilizes false twist effect. Q4: Which yarn type is more sensitive to low humidity, fine or coarse denier DTY? A4: Fine denier DTY ≤75D is more sensitive; breakage rises 29% under low humidity. Q5: What raw material moisture limit for polyester POY before texturing? A5: POY moisture content should remain below 0.8% to reduce humidity-related defects. Q6: How fast should air circulate in the texturing workshop? A6: 0.3–0.5 m/s air flow helps balance humidity across the whole production area. Q7: How much faster do metal spare parts degrade under RH above 70%? A7: Metal textile machinery spare parts degrade 34% faster under persistently high humidity.
