CN113832556A - Production process of super-soft and tough polyester semi-dull POY (polyester pre-oriented yarn) fiber - Google Patents
Production process of super-soft and tough polyester semi-dull POY (polyester pre-oriented yarn) fiber Download PDFInfo
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- CN113832556A CN113832556A CN202110963273.6A CN202110963273A CN113832556A CN 113832556 A CN113832556 A CN 113832556A CN 202110963273 A CN202110963273 A CN 202110963273A CN 113832556 A CN113832556 A CN 113832556A
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- 229920000728 polyester Polymers 0.000 title claims abstract description 40
- 239000000835 fiber Substances 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910052802 copper Inorganic materials 0.000 claims abstract description 52
- 239000010949 copper Substances 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 37
- 230000008569 process Effects 0.000 claims abstract description 37
- 239000000654 additive Substances 0.000 claims abstract description 33
- 230000000996 additive effect Effects 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 238000009987 spinning Methods 0.000 claims abstract description 23
- 238000007664 blowing Methods 0.000 claims abstract description 14
- 239000004576 sand Substances 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 238000010525 oxidative degradation reaction Methods 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 18
- 239000000155 melt Substances 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000004753 textile Substances 0.000 claims description 9
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000007730 finishing process Methods 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000009941 weaving Methods 0.000 abstract description 7
- 239000004744 fabric Substances 0.000 abstract description 4
- 230000003631 expected effect Effects 0.000 abstract description 2
- 229920004933 Terylene® Polymers 0.000 abstract 1
- 239000005020 polyethylene terephthalate Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008676 import Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000008041 oiling agent Substances 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- CWRVKFFCRWGWCS-UHFFFAOYSA-N Pentrazole Chemical compound C1CCCCC2=NN=NN21 CWRVKFFCRWGWCS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
- 239000008832 zhongfu Substances 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/10—Filtering or de-aerating the spinning solution or melt
- D01D1/106—Filtering
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/096—Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
- D01F11/08—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a production process of super-soft and tough terylene semi-dull POY fiber, which comprises the following steps of firstly generating non-oriented undrawn yarn polymer according to the following process, polyester melt → pipeline transportation → booster pump → melt cooler → melt distributor → spinning box → metering pump → spinneret plate → circular air blowing cooling, locally coating the surface of POY yarn with solution with copper additive, wherein the copper additive is not subjected to oxidative degradation during storage, the viscosity of the polyester melt is 0.60 +/-0.1 dl/g, spinneret holes of the spinneret plate are arranged in a prismatic shape, the aperture is 0.14mm multiplied by 0.45mm, the number of the holes is 130- "140", 50/70 meshes +80/90 meshes of metal sand is selected as spinning assembly filter sand, 1200 +/-50 meshes of filter screen are selected, and the distance of a windless zone is at least shortened by more than 4 cm. The production process of the super-soft and tough polyester semi-dull POY fiber is stable in production and smooth in subsequent weaving, and the fabric achieves the expected effect.
Description
The technical field is as follows:
the invention relates to the field of polyester yarn production, in particular to a production process of super-soft and tough polyester semi-dull POY (polyester pre-oriented yarn) fibers.
Background art:
with the development of fabrics, the requirements for spinning are higher, and the ultra-soft comfortable fiber is more popular, but at present, due to the difficulties of high spinning production consumption, high requirements for subsequent texturing and weaving, and the like, large-scale production is difficult, particularly stable production cannot be realized, the yield is low, and the fiber is easy to break, so that the subsequent weaving cannot be met, and the expected effect of the fabrics cannot be achieved.
The invention content is as follows:
the invention aims to solve the technical problem of providing a production process of super-soft and tough polyester semi-dull POY fiber, which has stable production, smooth subsequent weaving and expected fabric effect.
The technical proposal of the invention is to provide a production process of super-soft polyester semi-dull POY fiber, which comprises the following process flows,
firstly, generating a non-oriented undrawn yarn polymer according to the following process, namely polyester melt → pipeline conveying → a booster pump → a melt cooler → a melt distributor → a spinning box → a metering pump → a spinneret plate → circular air blowing for cooling, partially coating the surface of POY (polyester pre-oriented yarn) yarns by using a solution with a copper additive, wherein the copper additive is not subjected to oxidative degradation during storage, the viscosity of the polyester melt is 0.60 +/-0.1 dl/g, spinneret holes of the spinneret plate are arranged in a prismatic shape, the hole diameter is 0.14mm and 0.45mm, the hole number is 130 and 140, filter sand of a spinning assembly is metal sand of 50/70 meshes and 80/90 meshes, a filter screen is 1200 +/-50 meshes, and the distance of a calm zone is at least shortened by more than 4 cm;
step two, heating the single POY filaments by using an oven during one or more heating cycles, wherein the temperature of the oven is 160-200 ℃; and after heating, cooling the individual POY filaments to a temperature of about 70 ℃ to 150 ℃ during one or more cooling cycles through one or more finishing processes to temperature bond the copper additive to the surface of the textile fibers of the individual POY filaments and produce copper-reinforced individual POY filaments having copper and having antistatic properties;
and step three, continuously operating the molded POY filaments according to the following process, namely oiling the oil nozzle → the filament guide → the pre-network → GR1 → GR2 → winding molding → full-automatic integrated doffing, inspecting, packaging and warehousing.
Preferably, the adjustment of the distance of the calm zone is realized by a soft cushion and an iron plate between the circular blowing box and the sealing gasket and a mode of additionally arranging a gasket between the assembly catcher and the box body.
Preferably, the oil nozzle is a Nippon small-Marino oil nozzle, and the oil agent is a German L165 oil agent.
Preferably, the standard coil weight of the individual cakes is raised to 18 kg/ingot.
Preferably, the solution with the copper additive partially coats the surface of the single partially oriented yarn by partially coating the surface of the single POY with the solution with the copper additive during the post-extrusion texturizing to produce a texturized single POY filament having the characteristics of copper.
Preferably, the copper protrudes from the surface of the textile fiber of the copper-reinforced single POY filament and is exposed to air.
Further, the copper additive has copper particles with a size in the range of 1 micron to about 2.0 microns.
Furthermore, the process flow is as follows,
firstly, generating a non-oriented undrawn yarn polymer according to the following process, namely polyester melt → pipeline conveying → a booster pump → a melt cooler → a melt distributor → a spinning box → a metering pump → a spinneret plate → circular air blowing for cooling, partially coating the surface of a POY (polyester Pre-oriented yarn) yarn by using a solution with a copper additive, wherein the copper additive is not subjected to oxidative degradation during storage, the copper additive comprises copper particles with the size of 1 micron, the viscosity of the polyester melt is 0.60dl/g, spinneret holes of the spinneret plate are arranged in a prismatic shape, the hole diameter is 0.14mm and 0.45mm, the hole number is 135, filtering sand of a spinning assembly is metal sand with the size of 50 meshes plus 80 meshes, a filter screen is 1230 meshes, and the distance of a calm zone is shortened by more than 4.2 cm;
step two, heating the single POY filaments by using an oven during one or more heating cycles, wherein the temperature of the oven is 180 ℃; and after heating, cooling the individual POY filaments to a temperature of about 95 ℃ during one or more cooling cycles of a finishing process to temperature bond the copper additive to the surface of the textile fibers of the individual POY filaments and produce copper-reinforced individual POY filaments having copper and having antistatic properties;
and step three, continuously operating the molded POY filaments according to the following process, namely oiling the oil nozzle → the filament guide → the pre-network → GR1 → GR2 → winding molding → full-automatic integrated doffing, inspecting, packaging and warehousing.
The invention has the beneficial effects that: firstly, generating a non-oriented undrawn yarn polymer according to the following process, qualitatively improving the distribution uniformity of spinneret orifices on a spinneret plate through rhombic arrangement, greatly reducing the difference of process environments among monofilaments, and on the other hand, following the aerodynamic principle, ensuring that the vibration of the monofilaments can be reduced while achieving a better cooling effect under the action of smaller circular blowing cooling air, ensuring the evenness of the monofilaments and reducing the half inhibition value; the length-diameter ratio of the spinneret orifice is redesigned, the relaxation time of the melt in the orifice flow area of the spinneret orifice and the expansion rate of the expansion area are well controlled, and the spinnability of a new product is greatly improved; the windless area is shortened, so that the cooling effect of the filament bundles is improved, the spinnability of a new product is improved, the uneven yarn evenness of the new product is reduced, and the problems of high yarn yield reject ratio, poor production stability, excessive broken yarns, complex yarn path management, difficult yarn ending and the like are solved; meanwhile, the surface of a single POY is locally coated by the solution with the copper additive to generate a deformed single POY wire with the copper characteristic, so that the toughness and the strength of the single POY wire are improved, the single POY wire has antistatic performance, and the requirement of subsequent weaving is met.
Description of the drawings:
fig. 1 is a schematic view of the structure of a spinneret plate according to the present invention.
The specific implementation mode is as follows:
the invention will be further described with respect to specific embodiments in conjunction with the following drawings:
a production process of super-soft polyester semi-dull POY fiber comprises the following steps,
firstly, generating a non-oriented undrawn yarn polymer according to the following process, namely polyester melt → pipeline conveying → a booster pump → a melt cooler → a melt distributor → a spinning box → a metering pump → a spinneret plate → circular air blowing for cooling, partially coating the surface of POY (polyester pre-oriented yarn) yarns by using a solution with a copper additive, wherein the copper additive is not subjected to oxidative degradation during storage, the viscosity of the polyester melt is 0.60 +/-0.1 dl/g, spinneret holes of the spinneret plate are arranged in a prismatic shape, the hole diameter is 0.14mm and 0.45mm, the hole number is 130 and 140, filter sand of a spinning assembly is metal sand of 50/70 meshes and 80/90 meshes, a filter screen is 1200 +/-50 meshes, and the distance of a calm zone is at least shortened by more than 4 cm;
step two, heating the single POY filaments by using an oven during one or more heating cycles, wherein the temperature of the oven is 160-200 ℃; and after heating, cooling the individual POY filaments to a temperature of about 70 ℃ to 150 ℃ during one or more cooling cycles through one or more finishing processes to temperature bond the copper additive to the surface of the textile fibers of the individual POY filaments and produce copper-reinforced individual POY filaments having copper and having antistatic properties;
and step three, continuously operating the molded POY filaments according to the following process, namely oiling the oil nozzle → the filament guide → the pre-network → GR1 → GR2 → winding molding → full-automatic integrated doffing, inspecting, packaging and warehousing.
Specifically, in the present embodiment, the process flow is as follows,
firstly, generating a non-oriented undrawn yarn polymer according to the following process, namely polyester melt → pipeline conveying → a booster pump → a melt cooler → a melt distributor → a spinning box → a metering pump → a spinneret plate → circular air blowing for cooling, partially coating the surface of a POY (polyester Pre-oriented yarn) yarn by using a solution with a copper additive, wherein the copper additive is not subjected to oxidative degradation during storage, the copper additive comprises copper particles with the size of 1 micron, the viscosity of the polyester melt is 0.60dl/g, spinneret holes of the spinneret plate are arranged in a prismatic shape, the hole diameter is 0.14mm and 0.45mm, the hole number is 135, filtering sand of a spinning assembly is metal sand with the size of 50 meshes plus 80 meshes, a filter screen is 1230 meshes, and the distance of a calm zone is shortened by more than 4.2 cm;
step two, heating the single POY filaments by using an oven during one or more heating cycles, wherein the temperature of the oven is 180 ℃; and after heating, cooling the individual POY filaments to a temperature of about 95 ℃ during one or more cooling cycles of a finishing process to temperature bond the copper additive to the surface of the textile fibers of the individual POY filaments and produce copper-reinforced individual POY filaments having copper and having antistatic properties;
and step three, continuously operating the molded POY filaments according to the following process, namely oiling the oil nozzle → the filament guide → the pre-network → GR1 → GR2 → winding molding → full-automatic integrated doffing, inspecting, packaging and warehousing.
The adjustment of the distance of the calm zone is realized by a cushion and an iron plate between the circular blowing box and the sealing gasket and a mode of additionally arranging a gasket between the assembly catcher and the box body. Specifically, the upper end of the air box before modification is provided with an iron plate and a soft cushion; and (3) removing the iron plate and the soft cushion at the upper end of the air box after transformation, wherein the height of the removed iron plate and the soft cushion is 1.8cm, and meanwhile, replacing a sealing gasket with better heat resistance and elasticity, so that the sealing performance of a windless area is ensured. Simultaneously, install packing ring (thickness 2.3cm) additional between subassembly catcher and box, make spinneret face and box lower extreme distance shorter, both shortened the calm zone distance, still improved staff's convenience of operation, promoted work efficiency greatly.
Preferably, the solution with the copper additive partially coats the surface of the single partially oriented yarn by partially coating the surface of the single POY with the solution with the copper additive during the post-extrusion texturizing to produce a texturized single POY filament having the characteristics of copper. Wherein copper protrudes from the surface of the textile fiber of the copper-reinforced single POY filament to be exposed to air.
The polyester melt of the invention is from a three-kettle polymerization reaction device with one end at the other end of the Cortis, and the intrinsic viscosity of the melt is 0.60 dl/g; the spinning oil agent adopts a German L-165 imported POY special oil agent.
The production equipment is as follows:
(1) a booster pump:
the manufacturing factory: german Mag corporation
The model of the equipment is as follows: 1272-P01A-D01 type
(2) The whole spinning equipment comprises: japanese TMT
(3) Winding to complete equipment:
the manufacturing factory: japanese TMT
Model II: ORCA-11418R/12
(4) The circular air blower:
the manufacturing factory: hangzhou Zhongfu Artificial Environment engineering Co., Ltd
The model of the equipment is as follows: DHF-HF-132KW/15.9 myriameter air volume type
Testing an instrument:
the system comprises a German import Lauda viscometer, a Shanghai Mei Banda ultraviolet visible spectrophotometer, a Changzhou yarn length measuring instrument, a high-precision electronic balance, a Changzhou YG023B-11 type full-automatic single yarn strength Tester, a Changzhou YG367 type full-automatic filament thermal stress Tester, a Switzerland import Uster Tester-6 bar drying instrument, a British import desk-top nuclear magnetic resonance instrument and an Olympus brand profile section microscope analyzer.
Aiming at the problem that the POY appearance is easy to generate loose ring silk and broken silk, a proper oil nozzle is selected. The uniformity of oiling the tows determines the performances of product appearance, stable base color and the like, and is also the basic guarantee of the stability of subsequent weaving. The new product is cooled, bundled and oiled and wound, wherein a proper nozzle type number is selected, so that the oiling uniformity of the tows is influenced, and the stability of a filament path is also decisive. Under the same process conditions, the combined factors of the relative tension, the silk stability, the product appearance and the like are compared with the Japanese soup shallow stock oil nozzle of 0.6X 0.8 and the Japanese small horse oil nozzle, and the Japanese small horse oil nozzle is finally selected and used according to the test result. The specific test conditions are shown in table 1:
TABLE 1
In addition, the oil is selected. Under the same process and silk path system conditions, four POY special oiling agents with higher popularity and wider application range in the prior art are selected for testing, and the optimal oiling agent type is finally determined to be Germany L165 according to the production condition, the oiling rate of the silk bundle and the condition of broken silk. The specific test conditions are shown in Table 2.
Table 2 oil use test table
The invention improves the standard coil weight of a single spinning cake on the premise of ensuring the product quality, and improves the standard coil weight of the single spinning cake to 18 kg/ingot from about 10 kg/ingot of the same line, thereby reducing the tail passing times of subsequent elasticizing POY, effectively reducing the incidence of end breakage during tail passing, and simultaneously greatly reducing the production and packaging cost of new products. See table 3 for details;
TABLE 3 consumable comparison table
The production process parameters and technical indexes of the product of the invention are shown in the following table:
TABLE 4 spinning production Process parameters
| Serial number | Process parameter item | Unit of | |
| 1 | Melt viscosity | dl/g | 0.6 |
| 2 | Temperature of pipeline | ℃ | 285 |
| 3 | Temperature of spinning beam | ℃ | 291.5 |
| 4 | Spinning speed | m/min | 2500 |
| 5 | Air temperature of circular blowing | ℃ | 22 |
| 6 | Circular blowing wind pressure | Pa | 17 |
| 7 | Velocity G1 | m/min | 2500 |
| 8 | Velocity G2 | m/min | 2525 |
| 9 | Pre-network pressure | Mpa | 0.045 |
TABLE 5 Main technical indexes of the new products
| Serial number | Index item | Unit of | The result of the |
| 1 | Rate of deviation of linear density | ％ | -0.2 |
| 2 | Coefficient of linear density variation (CV value) | ％ | 0.25 |
| 3 | Breaking strength | cN/dtex | 5.72 |
| 4 | Coefficient of variation of breaking Strength (CV value) | ％ | 1.96 |
| 5 | Elongation at break | ％ | 142.3 |
| 6 | Coefficient of variation of elongation at break (CV value) | ％ | 1.95 |
The invention firstly generates non-oriented undrawn yarn polymer according to the following process, and qualitatively improves the distribution uniformity of spinneret orifices on a spinneret plate through diamond arrangement, greatly reduces the difference of process environments among monofilaments, and on the other hand, the invention follows the aerodynamic principle, ensures that the vibration of the monofilaments can be reduced under the action of small circular blowing cooling wind, thereby not only achieving better cooling effect, but also ensuring the evenness of the monofilaments and reducing half inhibition value; the length-diameter ratio of the spinneret orifice is redesigned, the relaxation time of the melt in the orifice flow area of the spinneret orifice and the expansion rate of the expansion area are well controlled, and the spinnability of a new product is greatly improved; the windless area is shortened, so that the cooling effect of the filament bundles is improved, the spinnability of a new product is improved, the uneven yarn evenness of the new product is reduced, and the problems of high yarn yield reject ratio, poor production stability, excessive broken yarns, complex yarn path management, difficult yarn ending and the like are solved; meanwhile, the surface of a single POY is locally coated by the solution with the copper additive to generate a deformed single POY wire with the copper characteristic, so that the toughness and the strength of the single POY wire are improved, the single POY wire has antistatic performance, and the requirement of subsequent weaving is met.
Those skilled in the art will recognize that these features can be combined, modified or interchanged as appropriate to arrive at further embodiments of the invention.
The foregoing is illustrative of the preferred embodiments of the present invention only and is not to be construed as limiting the claims. All equivalent process changes made by the present specification are included in the scope of the present invention.
Claims (8)
1. A production process of super-soft polyester semi-dull POY fibers is characterized by comprising the following process flows:
firstly, generating a non-oriented undrawn yarn polymer according to the following process, namely polyester melt → pipeline conveying → a booster pump → a melt cooler → a melt distributor → a spinning box → a metering pump → a spinneret plate → circular air blowing for cooling, partially coating the surface of POY (polyester pre-oriented yarn) yarns by using a solution with a copper additive, wherein the copper additive is not subjected to oxidative degradation during storage, the viscosity of the polyester melt is 0.60 +/-0.1 dl/g, spinneret holes of the spinneret plate are arranged in a prismatic shape, the hole diameter is 0.14mm and 0.45mm, the hole number is 130 and 140, filter sand of a spinning assembly is metal sand of 50/70 meshes and 80/90 meshes, a filter screen is 1200 +/-50 meshes, and the distance of a calm zone is at least shortened by more than 4 cm;
step two, heating the single POY filaments by using an oven during one or more heating cycles, wherein the temperature of the oven is 160-200 ℃; and after heating, cooling the individual POY filaments to a temperature of about 70 ℃ to 150 ℃ during one or more cooling cycles through one or more finishing processes to temperature bond the copper additive to the surface of the textile fibers of the individual POY filaments and produce copper-reinforced individual POY filaments having copper and having antistatic properties;
and step three, continuously operating the molded POY filaments according to the following process, namely oiling the oil nozzle → the filament guide → the pre-network → GR1 → GR2 → winding molding → full-automatic integrated doffing, inspecting, packaging and warehousing.
2. The process for producing semi-dull POY fiber of super-tough polyester according to claim 1, wherein the process comprises the following steps: the adjustment of the distance of the calm zone is realized by a soft cushion and an iron plate between the circular blowing box and the sealing gasket and a mode of additionally arranging a gasket between the assembly catcher and the box body.
3. The process for producing semi-dull POY fiber of super-tough polyester according to claim 1, wherein the process comprises the following steps: the oil nozzle is a Japanese small Maruo oil nozzle, and the oil agent is a German L165 oil agent.
4. The process for producing semi-dull POY fiber of super-tough polyester according to claim 1, wherein the process comprises the following steps: the standard coil weight of the individual cakes was raised to 18 kg/ingot.
5. The process for producing semi-dull POY fiber of super-tough polyester according to claim 1, wherein the process comprises the following steps: the solution with the copper additive partially coats the surface of the individual partially oriented yarns by partially coating the surface of the individual POY with the solution with the copper additive during post-extrusion texturing to produce textured individual POY filaments with copper characteristics.
6. The process for producing semi-dull POY fiber of super-tough polyester according to claim 1, wherein the process comprises the following steps: wherein copper protrudes from the surface of the textile fiber of the copper-reinforced single POY filament to be exposed to air.
7. The process for producing semi-dull POY fiber of super-tough polyester according to claim 1, wherein the process comprises the following steps: the copper additive has copper particles in a size range of 1 micron to about 2.0 microns.
8. The production process of the ultra-soft polyester semi-dull POY fiber according to claim 1, which comprises the following steps:
firstly, generating a non-oriented undrawn yarn polymer according to the following process, namely polyester melt → pipeline conveying → a booster pump → a melt cooler → a melt distributor → a spinning box → a metering pump → a spinneret plate → circular air blowing for cooling, partially coating the surface of a POY (polyester Pre-oriented yarn) yarn by using a solution with a copper additive, wherein the copper additive is not subjected to oxidative degradation during storage, the copper additive comprises copper particles with the size of 1 micron, the viscosity of the polyester melt is 0.60dl/g, spinneret holes of the spinneret plate are arranged in a prismatic shape, the hole diameter is 0.14mm and 0.45mm, the hole number is 135, filtering sand of a spinning assembly is metal sand with the size of 50 meshes plus 80 meshes, a filter screen is 1230 meshes, and the distance of a calm zone is shortened by more than 4.2 cm;
step two, heating the single POY filaments by using an oven during one or more heating cycles, wherein the temperature of the oven is 180 ℃; and after heating, cooling the individual POY filaments to a temperature of about 95 ℃ during one or more cooling cycles of a finishing process to temperature bond the copper additive to the surface of the textile fibers of the individual POY filaments and produce copper-reinforced individual POY filaments having copper and having antistatic properties;
and step three, continuously operating the molded POY filaments according to the following process, namely oiling the oil nozzle → the filament guide → the pre-network → GR1 → GR2 → winding molding → full-automatic integrated doffing, inspecting, packaging and warehousing.
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