CN112281240A - Melt direct spinning medium-control crimp HOY production process and polyester filament yarn - Google Patents

Melt direct spinning medium-control crimp HOY production process and polyester filament yarn Download PDF

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Publication number
CN112281240A
CN112281240A CN202011095318.4A CN202011095318A CN112281240A CN 112281240 A CN112281240 A CN 112281240A CN 202011095318 A CN202011095318 A CN 202011095318A CN 112281240 A CN112281240 A CN 112281240A
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Prior art keywords
melt
spinning
hoy
hollow
parts
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韩建科
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JIANGSU SHENJIU CHEMICAL FIBER CO Ltd
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JIANGSU SHENJIU CHEMICAL FIBER CO Ltd
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Priority to CN202011095318.4A priority Critical patent/CN112281240A/en
Publication of CN112281240A publication Critical patent/CN112281240A/en
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/90Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/08Melt spinning methods
    • D01D5/088Cooling filaments, threads or the like, leaving the spinnerettes
    • D01D5/092Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/24Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00General methods for the manufacture of artificial filaments or the like
    • D01F1/02Addition of substances to the spinning solution or to the melt
    • D01F1/10Other agents for modifying properties

Abstract

The invention discloses a melt direct spinning hollow curled HOY production process, which comprises the following steps: step S1, preparation of melt, step S2, pre-spinning treatment, step S3, spinning, step S4 and post-spinning treatment. The melt direct spinning hollow curled HOY disclosed by the invention has the advantages of simple and feasible production process, low equipment dependence, short process, high efficiency and stable product, and can provide guidance for the industrial production of hollow curled HOY; the problems of poor cooling effect, low hollowness and poor product quality of the hollow curled HOY can be effectively solved, the investment is low, the effect is fast, and the textile cost is greatly reduced; the prepared hollow curled HOY has excellent comprehensive performance, multiple functions, good hand feeling, good performance stability and high wearing comfort.

Description

Melt direct spinning medium-control crimp HOY production process and polyester filament yarn
Technical Field
The invention relates to the technical field of textile processing, in particular to a melt direct spinning medium-control curling HOY production process and polyester filament yarns.
Background
With the improvement of living standard and living quality, people have higher and higher requirements on the aspect of wearing clothes, cotton, hemp and common synthetic fiber fabrics cannot meet the increasing requirements of people due to the characteristics and inherent limitations of the fabrics, and especially in the aspects of overcoat clothes and toy plush, people put forward higher requirements, such as soft hand feeling, good drapability, elasticity, dryness, fineness and the like of fabrics.
HOY is a nylon high-orientation yarn, wherein the most representative product of the nylon 6 high-orientation yarn is a new product in recent years, the performance of the nylon 6 high-orientation yarn is similar to that of nylon 6 filament yarn, the fabric has good hand feeling, and the warping efficiency is high. Compared with the pre-oriented yarn, the high-oriented yarn has higher stretching degree, better disorientation degree and good stability. Chinlon 6 is one of common textile fibers, has a series of excellent performances, and is widely applied to various fields of clothing, home textiles, decoration, agriculture, fishery and the like.
The hollow crimp HOY is short for a nylon high-orientation yarn with a cavity in the cross section along the axial direction, and is an important profiled fiber. The voids of the oriented yarns provide still air to increase the warmth retention of the fibers and increase the surface area per unit volume, thereby increasing their bulkiness. The adsorption capacity of the hollow curled HOY to media such as water, gas, blood and the like and the binding capacity of the hollow curled HOY and a matrix material when the hollow curled HOY is used as a composite material are improved to a certain extent, so that the rigidity and the stiffness of the hollow curled HOY are improved, and the bending resistance and the wear resistance of the hollow curled HOY are also improved. Therefore, the hollow crimp HOY becomes a star product in the functional fiber market at the present stage, and has very large market potential and application value.
Currently, the main production method of hollow crimp HOY is the melt spinning method, which is the most common and least costly method. For melt spinning, there are generally two types, a melt direct spinning method and a chip spinning method. The melt direct spinning technology is a method for directly spinning by utilizing polymer melt, and because the melt direct spinning technology has short process flow and low production energy consumption and operation cost, the melt direct spinning is already a main production mode of the current civil silk. However, the method has high requirements on polymerization and spinning stability, the existing process for producing the hollow curled HOY by melt direct spinning is complex, the spinning cost is high, the labor intensity is high, and the comprehensive performance of the prepared product needs to be further improved.
Therefore, the development of a stable and efficient melt direct spinning hollow crimp HOY production process has substantial industrial significance and plays a very important role in promoting the development of the functional textile industry.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a melt direct spinning controlled crimping HOY production process and polyester filament yarns, the production process is simple and feasible, has low equipment dependence, short flow, high efficiency and stable product, and can provide guidance for the industrial production of hollow crimping HOY; the problems of poor cooling effect, low hollowness and poor product quality of the hollow curled HOY can be effectively solved, the investment is low, the effect is fast, and the textile cost is greatly reduced; the prepared hollow curled HOY has excellent comprehensive performance, multiple functions, good hand feeling, good performance stability and high wearing comfort.
In order to achieve the purpose, the invention adopts the technical scheme that: a melt direct spinning hollow crimp HOY production process is characterized by comprising the following steps:
step S1, preparation of melt: mixing polycaprolactam slices, functional filler and hyperbranched polyamide to obtain a mixed material, heating, melting and extruding the mixed material in a screw extruder, adding the extruded mixed material into a reactor, and maintaining the pressure at 220-250 ℃ and 1.8-2.0 MPa; releasing the pressure in the reactor and raising the temperature to 285-300 ℃; vacuumizing and stirring to obtain a spinning melt;
step S2, pretreatment before spinning: the spinning melt prepared in the step S1 is pressurized and conveyed by a gear booster pump after passing through a melt filter, and is cooled by a cooler; obtaining a pretreated spinning melt;
step S3, spinning: conveying the pretreated spinning melt prepared in the step S2 into a spinning box body, distributing the spinning melt to each spinning position, quantitatively conveying the melt to each spinning component by each spinning position through a metering pump, filtering the melt in each spinning component through a filter layer, uniformly pressurizing the melt, spraying the melt in a trickle form through spinneret holes in a spinneret plate, and cooling the melt in a circular blowing manner through a fiber cooling zone in sequence to form monofilaments with hollow structures;
step S4, spinning post-treatment: and (4) oiling the hollow structural monofilament prepared in the step S3 through an oil nozzle device, drafting and shaping, adding a net through a net machine, performing package forming through a winding machine, and finally inspecting and packaging in a grading manner to obtain a hollow curled HOY finished product.
Preferably, the mass ratio of the polycaprolactam slices, the functional filler and the hyperbranched polyamide in the step S1 is (3-5) to (0.1-0.3) to 0.4.
Preferably, the preparation method of the hyperbranched polyamide is described in Chinese patent application No. 201811622362.9, namely patent example 1.
Preferably, the functional filler is prepared from the following components in parts by weight: 3-5 parts of graphene oxide fiber, 3-6 parts of olivine powder, 2-4 parts of attapulgite, 0.5-1.5 parts of coupling agent and 1-3 parts of nano zinc oxide fiber.
Preferably, the diameter of the graphene oxide fiber is 150-300nm, and the length-diameter ratio is (14-17): 1.
Preferably, the diameter of the nano zinc oxide fiber is 300-500nm, and the length-diameter ratio is (13-15) to 1.
Preferably, the particle size of the attapulgite is 1000-1300 meshes.
Preferably, the coupling agent is at least one of a silane coupling agent KH550, a silane coupling agent KH560 and a silane coupling agent KH 570.
Preferably, the hot melt extrusion is divided into 4 processes, and the melting temperatures are respectively as follows: 275 ℃ and 280 ℃ and 285 ℃ and 295 ℃ and 300 ℃.
Preferably, the spinning melt delivery temperature in step S3 is 280-285 ℃.
Preferably, the temperature of the spinning beam in the step S3 is 285-290 ℃; the blowing cooling temperature is 22-25 ℃, and the blowing speed is 0.5-0.7 m/s.
Preferably, the oiling spin finish in step S4 is 0.7-0.9% of the quality of the highly oriented yarn.
Preferably, the winding speed of the winder in the step S4 is 5200 to 5600m/min, the draw ratio is 2.0 to 2.5, and the winding overfeed rate is 1.05 to 1.25.
Preferably, the spinneret in step S3 is designed to have a 2C +2C shape.
The titer of the polyester filament yarn produced by the melt direct spinning hollow crimp HOY production process is 0.2-0.3 dpf, the mechanical strength is 3.0-4.0 cN/dtex, the fracture productivity is 15-20%, and the conventional polyester melt is used as a main melt.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the invention provides a melt direct spinning hollow crimp HOY production process and a polyester filament yarn, the production process is simple and feasible, has low equipment dependence, short flow, high efficiency and stable product, and can provide guidance for the industrial production of hollow crimp HOY; the problems of poor cooling effect, low hollowness and poor product quality of the hollow curled HOY can be effectively solved, the investment is low, the effect is fast, and the textile cost is greatly reduced; the prepared hollow curled HOY has excellent comprehensive performance, multiple functions, good hand feeling, good performance stability and high wearing comfort.
Detailed Description
The following detailed description of preferred embodiments of the invention will be made.
A melt direct spinning hollow crimp HOY production process is characterized by comprising the following steps:
step S1, preparation of melt: mixing polycaprolactam slices, functional filler and hyperbranched polyamide to obtain a mixed material, heating, melting and extruding the mixed material in a screw extruder, adding the extruded mixed material into a reactor, and maintaining the pressure at 220-250 ℃ and 1.8-2.0 MPa; releasing the pressure in the reactor and raising the temperature to 285-300 ℃; vacuumizing and stirring to obtain a spinning melt;
step S2, pretreatment before spinning: the spinning melt prepared in the step S1 is pressurized and conveyed by a gear booster pump after passing through a melt filter, and is cooled by a cooler; obtaining a pretreated spinning melt;
step S3, spinning: conveying the pretreated spinning melt prepared in the step S2 into a spinning box body, distributing the spinning melt to each spinning position, quantitatively conveying the melt to each spinning component by each spinning position through a metering pump, filtering the melt in each spinning component through a filter layer, uniformly pressurizing the melt, spraying the melt in a trickle form through spinneret holes in a spinneret plate, and cooling the melt in a circular blowing manner through a fiber cooling zone in sequence to form monofilaments with hollow structures;
step S4, spinning post-treatment: and (4) oiling the hollow structural monofilament prepared in the step S3 through an oil nozzle device, drafting and shaping, adding a net through a net machine, performing package forming through a winding machine, and finally inspecting and packaging in a grading manner to obtain a hollow curled HOY finished product.
Preferably, the mass ratio of the polycaprolactam slices, the functional filler and the hyperbranched polyamide in the step S1 is (3-5) to (0.1-0.3) to 0.4.
Preferably, the preparation method of the hyperbranched polyamide is described in Chinese patent application No. 201811622362.9, namely patent example 1.
Preferably, the functional filler is prepared from the following components in parts by weight: 3-5 parts of graphene oxide fiber, 3-6 parts of olivine powder, 2-4 parts of attapulgite, 0.5-1.5 parts of coupling agent and 1-3 parts of nano zinc oxide fiber.
Preferably, the diameter of the graphene oxide fiber is 150-300nm, and the length-diameter ratio is (14-17): 1.
Preferably, the diameter of the nano zinc oxide fiber is 300-500nm, and the length-diameter ratio is (13-15) to 1.
Preferably, the particle size of the attapulgite is 1000-1300 meshes.
Preferably, the coupling agent is at least one of a silane coupling agent KH550, a silane coupling agent KH560 and a silane coupling agent KH 570.
Preferably, the hot melt extrusion is divided into 4 processes, and the melting temperatures are respectively as follows: 275 ℃ and 280 ℃ and 285 ℃ and 295 ℃ and 300 ℃.
Preferably, the spinning melt delivery temperature in step S3 is 280-285 ℃.
Preferably, the temperature of the spinning beam in the step S3 is 285-290 ℃; the blowing cooling temperature is 22-25 ℃, and the blowing speed is 0.5-0.7 m/s.
Preferably, the oiling spin finish in step S4 is 0.7-0.9% of the quality of the highly oriented yarn.
Preferably, the winding speed of the winder in the step S4 is 5200 to 5600m/min, the draw ratio is 2.0 to 2.5, and the winding overfeed rate is 1.05 to 1.25.
Preferably, the spinneret in step S3 is designed to have a 2C +2C shape.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the invention provides a melt direct spinning hollow curled HOY production process, which is simple and easy to implement, low in equipment dependence, short in process, high in efficiency and stable in product, and can provide guidance for industrial production of hollow curled HOY; the problems of poor cooling effect, low hollowness and poor product quality of the hollow curled HOY can be effectively solved, the investment is low, the effect is fast, and the textile cost is greatly reduced; the prepared hollow curled HOY has excellent comprehensive performance, multiple functions, good hand feeling, good performance stability and high wearing comfort.
The invention will be further described with reference to specific examples, but the scope of protection of the invention is not limited thereto:
example 1
Embodiment 1 provides a melt direct spinning hollow crimp HOY production process, which is characterized by comprising the following steps:
step S1, preparation of melt: mixing polycaprolactam slices, functional filler and hyperbranched polyamide to obtain a mixed material, heating, melting and extruding the mixed material in a screw extruder, adding the extruded mixed material into a reactor, and maintaining the pressure at 220 ℃ and 1.8 MPa; releasing the pressure in the reactor and raising the temperature to 285 ℃; vacuumizing and stirring to obtain a spinning melt;
step S2, pretreatment before spinning: the spinning melt prepared in the step S1 is pressurized and conveyed by a gear booster pump after passing through a melt filter, and is cooled by a cooler; obtaining a pretreated spinning melt;
step S3, spinning: conveying the pretreated spinning melt prepared in the step S2 into a spinning box body, distributing the spinning melt to each spinning position, quantitatively conveying the melt to each spinning component by each spinning position through a metering pump, filtering the melt in each spinning component through a filter layer, uniformly pressurizing the melt, spraying the melt in a trickle form through spinneret holes in a spinneret plate, and cooling the melt in a circular blowing manner through a fiber cooling zone in sequence to form monofilaments with hollow structures;
step S4, spinning post-treatment: and (4) oiling the hollow structural monofilament prepared in the step S3 through an oil nozzle device, drafting and shaping, adding a net through a net machine, performing package forming through a winding machine, and finally inspecting and packaging in a grading manner to obtain a hollow curled HOY finished product.
The mass ratio of the polycaprolactam slices, the functional filler and the hyperbranched polyamide in the step S1 is 3: 0.1: 0.4.
The functional filler is prepared from the following components in parts by weight: 3 parts of graphene oxide fiber, 3 parts of olivine powder, 2 parts of attapulgite, 0.5 part of coupling agent and 1 part of nano zinc oxide fiber.
The diameter of the graphene oxide fiber is 150nm, and the length-diameter ratio is 14: 1; the diameter of the nano zinc oxide fiber is 300nm, and the length-diameter ratio is 13: 1; the particle size of the attapulgite is 1000 meshes; the coupling agent is a silane coupling agent KH 550.
The hot melt extrusion is divided into 4 processes, and the melting temperatures are respectively as follows: 275 deg.C, 280 deg.C, 285 deg.C, 295 deg.C.
The spinning melt conveying temperature in the step S3 is 280 ℃; the temperature of the spinning manifold is 285 ℃; the blowing cooling temperature is 22 ℃, and the blowing speed is 0.5 m/s.
The oiling spinning oil agent in the step S4 accounts for 0.7% of the mass of the high-orientation yarn; the winding speed of the winder is 5200m/min, the draw ratio is 2.0, and the winding overfeed rate is 1.05.
Example 2
Example 2 provides a melt-spun hollow crimp HOY production process, which is substantially the same as example 1 except that the mass ratio of the polycaprolactam slices, the functional filler and the hyperbranched polyamide in step S1 is 3.5: 0.15: 0.4; the functional filler is prepared from the following components in parts by weight: 3.5 parts of graphene oxide fiber, 4 parts of olivine powder, 2.5 parts of attapulgite, 0.7 part of coupling agent and 1.5 parts of nano zinc oxide fiber.
Example 3
Example 3 provides a melt-spun hollow crimp HOY production process, which is substantially the same as example 1 except that the mass ratio of the polycaprolactam slices, the functional filler and the hyperbranched polyamide in step S1 is 4: 0.2: 0.4; the functional filler is prepared from the following components in parts by weight: 4 parts of graphene oxide fiber, 4 parts of olivine powder, 3 parts of attapulgite, 1 part of coupling agent and 2 parts of nano zinc oxide fiber.
Example 4
Example 4 provides a melt-spun hollow crimp HOY production process, which is substantially the same as example 1 except that the mass ratio of the polycaprolactam slices, the functional filler and the hyperbranched polyamide in step S1 is 4.5: 0.25: 0.4; the functional filler is prepared from the following components in parts by weight: 4.5 parts of graphene oxide fiber, 5.5 parts of olivine powder, 3.5 parts of attapulgite, 1.3 parts of coupling agent and 2.5 parts of nano zinc oxide fiber.
Example 5
Example 5 provides a melt-spun hollow crimp HOY production process, which is substantially the same as example 1 except that the mass ratio of the polycaprolactam slices, the functional filler and the hyperbranched polyamide in step S1 is 5: 0.3: 0.4; the functional filler is prepared from the following components in parts by weight: 5 parts of graphene oxide fiber, 6 parts of olivine powder, 4 parts of attapulgite, 1.5 parts of coupling agent and 3 parts of nano zinc oxide fiber.
Comparative example 1
Comparative example 1 provides a melt direct spun hollow crimp HOY production process which is essentially the same as example 1 except that no hyperbranched polyamide is added.
Comparative example 2
Comparative example 2 provides a melt direct-spun hollow crimped HOY production process, which is substantially the same as example 1 except that no graphene oxide fiber was added.
Comparative example 3
Comparative example 3 provides a melt direct spun hollow crimped HOY production process which is essentially the same as example 1 except that no nano zinc oxide fibers are added.
In order to further illustrate the beneficial technical effects of the hollow curled HOY prepared by the melt direct spinning hollow curled HOY production process related to the embodiment of the invention, the hollow curled HOY in each example is subjected to an effect test, the test method is referred to the corresponding national standard of China, and the test results are shown in Table 1.
TABLE 1
As can be seen from table 1, the hollow crimp HOY produced by the melt direct spinning hollow crimp HOY production process disclosed in the examples of the present invention has better mechanical properties and stability, which are the result of the synergistic effect of the components.
The above-mentioned embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims (10)

1. A melt direct spinning hollow crimp HOY production process is characterized by comprising the following steps:
step S1, preparation of melt: mixing polycaprolactam slices, functional filler and hyperbranched polyamide to obtain a mixed material, heating, melting and extruding the mixed material in a screw extruder, adding the extruded mixed material into a reactor, and maintaining the pressure at 220-250 ℃ and 1.8-2.0 MPa; releasing the pressure in the reactor and raising the temperature to 285-300 ℃; vacuumizing and stirring to obtain a spinning melt;
step S2, pretreatment before spinning: the spinning melt prepared in the step S1 is pressurized and conveyed by a gear booster pump after passing through a melt filter, and is cooled by a cooler; obtaining a pretreated spinning melt;
step S3, spinning: conveying the pretreated spinning melt prepared in the step S2 into a spinning box body, distributing the spinning melt to each spinning position, quantitatively conveying the melt to each spinning component by each spinning position through a metering pump, filtering the melt in each spinning component through a filter layer, uniformly pressurizing the melt, spraying the melt in a trickle form through spinneret holes in a spinneret plate, and cooling the melt in a circular blowing manner through a fiber cooling zone in sequence to form monofilaments with hollow structures;
step S4, spinning post-treatment: and (4) oiling the hollow structural monofilament prepared in the step S3 through an oil nozzle device, drafting and shaping, adding a net through a net machine, performing package forming through a winding machine, and finally inspecting and packaging in a grading manner to obtain a hollow curled HOY finished product.
2. The process of claim 1, wherein the mass ratio of the polycaprolactam slices, the functional filler and the hyperbranched polyamide in step S1 is (3-5) to (0.1-0.3) to 0.4.
3. The process according to claim 1, wherein the functional filler is prepared from the following components in parts by weight: 3-5 parts of graphene oxide fiber, 3-6 parts of olivine powder, 2-4 parts of attapulgite, 0.5-1.5 parts of coupling agent and 1-3 parts of nano zinc oxide fiber.
4. The production process of claim 3, wherein the graphene oxide fiber has a diameter of 150-300nm and an aspect ratio of (14-17) to 1.
5. The process of claim 3, wherein the diameter of the nano zinc oxide fiber is 300-500nm, and the aspect ratio is (13-15) to 1.
6. The process according to claim 3, wherein the particle size of the attapulgite is 1000-1300 mesh.
7. The process of claim 3, wherein the coupling agent is at least one of KH550, KH560 and KH 570.
8. The process of claim 1, wherein the hot melt extrusion is divided into 4 steps with melting temperatures of: 275 ℃ and 280 ℃ and 285 ℃ and 295 ℃ and 300 ℃.
9. The process of claim 1, wherein the spinning melt delivery temperature in step S3 is 280-285 ℃; the temperature of the spinning manifold is 285-290 ℃; the cooling temperature of the air blowing is 22-25 ℃, and the air blowing speed is 0.5-0.7 m/s; the spinneret plate is designed in a 2C +2C shape.
10. Polyester filaments produced by the melt-spun hollow crimp HOY production process according to any one of claims 1 to 9, characterized in that: the titer of the polyester filament yarn is 0.2-0.3 dpf, the mechanical strength is 3.0-4.0 cN/dtex, the fracture productivity is 15-20%, and the conventional polyester melt is used as the main melt.
CN202011095318.4A 2020-10-15 2020-10-15 Melt direct spinning medium-control crimp HOY production process and polyester filament yarn Pending CN112281240A (en)

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