Production method of melt direct spinning flat polyester industrial filaments
A technology of melt direct spinning and production method, applied in the field of chemical fiber product manufacturing, can solve the problems of high energy consumption, long process flow, large equipment investment, etc., and achieve the effects of ensuring the melt hue, shortening the process flow, and reducing energy consumption
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Embodiment 1
[0039] Embodiment 1: the preparation of low-shrinkage 500D flat special-shaped industrial yarn comprises the following steps:
[0040] The process parameters are as follows:
[0041] Equipment: LSP liquid phase polymerization equipment; spinning equipment; stretch winding equipment.
[0042] Product specification: 550dtex / 96f.
[0043]Raw materials: glossy polyester melt with a viscosity of 0.98dl / g; terminal carboxyl group—COOH≤30mol / t; diethylene glycol≤1.2%; liquid phase polymerization temperature: 278~285°C; spinning temperature: 300°C; Slow cooling heating temperature: 340°C; pump supply: 290g / min; side blowing cooling parameters: wind speed: 0.45m / s; humidity: 75%; wind temperature: 21°C; stretching conditions: two-stage stretching, one-stage Draw ratio: 3.92, total draw ratio: 5.65, drawing rolls are shown in Table 1; relaxation ratio: 0.889; winding speed: 2620m / min; spinning oil: Japan, Matsumoto E-6551, crude oil Oil; network device pressure: 0.08MPa for the first...
Embodiment 2
[0050] Embodiment 2: the preparation of low-shrinkage 1000D flat special-shaped industrial yarn comprises the following steps:
[0051] The process parameters are as follows:
[0052] Equipment: LSP liquid phase polymerization equipment; spinning equipment; stretch winding equipment.
[0053] Product specification: 1100dtex / 192f.
[0054] Raw materials: glossy polyester melt with a viscosity of 0.98dl / g; terminal carboxyl group—COOH≤30mol / t; diethylene glycol≤1.2%; liquid phase polymerization temperature: 278~285°C; spinning temperature: 300°C; Slow cooling heating temperature: 340°C; pump supply: 287g / min; side blowing cooling parameters: wind speed: 0.50m / s; humidity: 75%; wind temperature: 21°C; stretching conditions: two-stage stretching, one-stage Draw ratio: 3.96, total draw ratio: 5.71, drawing rolls are shown in Table 2; relaxation ratio: 0.886; winding speed: 2600m / min; spinning oil: Japan, Matsumoto E-6551, crude oil Oil; network pressure: 0.10MPa for the first ne...
Embodiment 3
[0061] Embodiment 3: the preparation of low-shrinkage 1500D flat special-shaped industrial yarn comprises the following steps:
[0062] The process parameters are as follows:
[0063] Equipment: LSP liquid phase polymerization equipment; spinning equipment; stretch winding equipment.
[0064] Product specification: 1670dtex / 192f.
[0065] Raw materials: glossy polyester melt with a viscosity of 0.98dl / g; terminal carboxyl group—COOH≤30mol / t; diethylene glycol≤1.2%; liquid phase polymerization temperature: 278~285°C; spinning temperature: 300°C; Slow cooling heating temperature: 320°C; pump supply: 428g / min; side blowing cooling parameters: wind speed: 0.55m / s; humidity: 75%; wind temperature: 21°C; stretching conditions: two-stage stretching, one-stage Draw ratio: 4.00, total draw ratio: 5.72, drawing rolls are shown in Table 3; relaxation ratio: 0.884; winding speed: 2565m / min; spinning oil: Japan, Matsumoto E-6551, crude oil Oil; network device pressure: 0.12MPa for the f...
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