Method for manufacturing bottle piece spinning return material recycled polyester moisture-absorbing sweat-releasing POY filament
A technology of regenerated polyester and moisture absorption and perspiration, which is applied in the melting of filament raw materials, the complete set of equipment for the production of artificial threads, and the melt spinning method. Excellent sweat function
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[0021] Example 1
[0022] A method for preparing recycled polyester moisture wicking polyester POY filaments spun from a piece of cardboard, comprising the following steps:
[0023] Step 1. Pre-crystallize the material, the material is a PET bottle sheet; specifically, dry hot air is used for pre-crystallization; when the material is pre-crystallized, the pre-crystallization temperature is 168°C, and the temperature of the dry hot air is 172°C , The air dew point is -60℃, the material moisture content is 50ppm, and the drying time is 8 hours.
[0024] Step 2. Screw feeding of the material: First, feed the dried PET bottle back into the screw extruder; when feeding the material by screw, the material is PET (polyethylene terephthalate) 甁片回料.
[0025] Step 3. Filter, homopolymerize, pressurize, filter, homopolymerize, and pressurize the melt extruded by the extruder to ensure the continuous production of spinning and the constant melt pressure; the pre-filter pressure during filtration ...
Example Embodiment
[0027] Example 2
[0028] A method for preparing recycled polyester moisture wicking polyester POY filaments spun from a piece of cardboard, comprising the following steps:
[0029] Step 1. Pre-crystallize the material, the material is PET bottle sheet; specifically, dry hot air is used for pre-crystallization; when the material is pre-crystallized, the pre-crystallization temperature is 172°C, and the temperature of dry hot air is 174°C , The air dew point is -59℃, the material moisture content is 50ppm, and the drying time is 6 hours.
[0030] Step 2. Screw feeding of the material: the hot-air dried PET bottle is fed back into the screw extruder; when the material is fed by screw, the material is PET (polyethylene terephthalate) bottle Piece back material.
[0031] Step 3. Filter, homopolymerize, pressurize, filter, homopolymerize, and pressurize the melt extruded by the extruder to ensure continuous spinning production and constant melt pressure; the front pressure during filt...
Example Embodiment
[0033] Example 3
[0034] A method for preparing recycled polyester moisture wicking polyester POY filaments spun from a piece of cardboard, comprising the following steps:
[0035] Step 1. Pre-crystallize the material, the material is PET bottle sheet; specifically, dry hot air is used for pre-crystallization; when the material is pre-crystallized, the pre-crystallization temperature is 176°C, and the temperature of the dry hot air is 176°C , The air dew point is -55℃, the material moisture content is 50ppm, and the drying time is 9 hours.
[0036] Step 2. Feed the hot-air-dried PET bottle return material into the screw extruder; when the material is fed in the screw type, the material is PET (polyethylene terephthalate) bottle return material.
[0037] Step 3. Filter, homopolymerize, pressurize, filter, homopolymerize, and pressurize the mixture extruded by the extruder to ensure continuous spinning production and constant melt pressure; the pre-filtration pressure during filtration...
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