CN114703572A - Production system and preparation method of polyamide composite yarn - Google Patents

Production system and preparation method of polyamide composite yarn Download PDF

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Publication number
CN114703572A
CN114703572A CN202210454659.9A CN202210454659A CN114703572A CN 114703572 A CN114703572 A CN 114703572A CN 202210454659 A CN202210454659 A CN 202210454659A CN 114703572 A CN114703572 A CN 114703572A
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Prior art keywords
godet
fdy
poy
roller
production system
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CN202210454659.9A
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Chinese (zh)
Inventor
常磊卿
邓梦颖
王献杰
卢宇
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Fujian Yongrong Jinjiang Co Ltd
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Fujian Yongrong Jinjiang Co Ltd
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Priority to CN202210454659.9A priority Critical patent/CN114703572A/en
Publication of CN114703572A publication Critical patent/CN114703572A/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

The invention relates to a production system and a preparation method of nylon composite yarns, wherein the production system comprises a wallboard, a spinning assembly, a pre-networking device, an FDY yarn guide disc set, a POY yarn guide disc set, a hot box, a buncher, a composite yarn guide disc, a main networking device and a multi-roller winder are arranged on the wallboard, and the production system further comprises a yarn suction gun.

Description

Production system and preparation method of polyamide composite yarn
Technical Field
The invention relates to the technical field of chemical fibers, in particular to a production system and a preparation method of nylon composite yarns.
Background
In recent years, with the continuous improvement of living standard of people, the structure produced by chemical fiber is greatly changed along with the development of textiles, a rigid system is developed to a flexible system, the imitated natural fiber is rapidly developed, particularly the occurrence of the differential shrinkage composite fiber provides a raw material with high quality and low price for adjusting the product structure in the textile industry. The different shrinkage nylon fiber is formed by combining POY and FDY yarns through two-step fiber mixing equipment or one-step spinning equipment and a net machine.
At present, the differential shrinkage polyester fiber mainly adopts a one-step FDY/POY polyester process technology, and the industrialized production technology is mature. Because the nylon spinning process and the polyester spinning process are greatly different, the one-step FDY/POY polyester process technology is not suitable for preparing the different-shrinkage nylon fibers. According to the review, domestic hetero-shrinkage nylon fibers are still mainly prepared by fiber mixing equipment of a two-step method, the FDY/POY nylon process technology of a one-step method is not mature, for example, the Chinese invention patent CN105386138A discloses a one-step POY + FDY composite spinning process, the technical content adopts a composite double-box spinning box, and the composite double-box spinning box is respectively corresponding to two metering pumps and two spinning assemblies for preparation.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a production system of nylon composite yarns, which has the advantages of simple structure, short process flow and strong operability.
The embodiment of the invention is realized by adopting the following scheme: the production system comprises a wallboard, wherein a spinning assembly for producing FDY and POY (polyester pre-oriented yarn) primary fibers, a pre-networking device for improving oiling uniformity of tows, an FDY yarn guide disc set for drafting the FDY primary fibers, a POY yarn guide disc set for drafting the POY primary fibers, a hot box for performing heat setting and drafting on the FDY and POY primary fibers, a buncher for stranding the FDY and POY primary fibers, a composite yarn guide disc for drafting the stranded polyamide composite yarns, a main network device for improving cohesive force of the polyamide composite yarns and a multi-roller winder for winding the polyamide composite yarns are arranged on the wallboard, the pre-networking device is arranged below the spinning assembly, the composite yarn guide disc is arranged at the upper left corner of the wallboard, the main network device and the buncher are positioned below the composite wire guide disc, the main network device is positioned on the left side of the buncher, the multi-roller winder is positioned below the main network device, the hot box is arranged below the buncher, the FDY wire guide disc group is arranged below the hot box, and the POY wire guide disc group is arranged below the FDY wire guide disc group; the production system also comprises a suction gun for drawing the FDY and POY primary fibers produced by the spinning assembly.
In one embodiment of the invention, the spinning assembly comprises a POY spinning production machine and an FDY spinning production machine.
In one embodiment of the invention, the FDY godet set comprises a GR1 godet and a GR2 godet, and the GR1 godet is located to the right of the GR2 godet.
In an embodiment of the present invention, the POY godet group includes a GR3 godet and a GR4 godet, and the GR3 godet is located at the right of the GR4 godet.
In an embodiment of the invention, a hot roller and a filament separating roller are arranged in the hot box, the filament separating roller is positioned above the hot roller, a filament outlet is formed in the top of the hot box, and a filament inlet is formed in the bottom of the hot box.
The invention also aims to provide a preparation method for preparing the nylon composite yarn by using the production system of the nylon composite yarn.
The preparation method of the production system of the nylon composite yarn comprises the following steps:
step S1: the spinning assembly sprays FDY and POY nascent fibers, the FDY and POY nascent fibers are introduced into a pre-networking device by a filament suction gun after oiling, and the FDY and POY nascent fibers are divided;
step S2: FDY nascent fibers sequentially pass through a GR1 godet and a GR2 godet from a filament suction gun, enter a hot box through a filament inlet of the hot box, and are heated and shaped through a hot roller and a filament dividing roller in the hot box; POY nascent fiber sequentially passes through a GR3 godet and a GR4 godet from a filament suction gun, enters a hot box through a filament inlet of the hot box and does not pass through a hot roller and a filament separating roller;
step S3, outputting the FDY nascent fibers and the POY nascent fibers from a filament outlet of a hot box, and plying the FDY nascent fibers and the POY nascent fibers in a buncher;
step S4: and drafting the plied FDY and POY nascent fibers by a composite yarn guide disc, entering a main network device, and finally entering a multi-roller winder for winding and shaping through the main network device to obtain the nylon composite yarn.
In one embodiment of the invention, the winding speed of the GR1 godet and the GR2 godet is 2700-4400 m/min; the winding speed of the GR3 godet and the GR4 godet is 4200-4300 m/min; the winding speed of the composite godet is 4200-4400 m/min.
In one embodiment of the invention, the winding speed of the hot roller is 4200-4400 m/min; the winding speed of the yarn dividing roller is 4200-4400 m/min, and the number of yarn hanging turns is 4-8.
In an embodiment of the invention, the pressure of the pre-networking device is 1.2-1.5 bar; the pressure of the main network device is 3.5-3.8 bar; the winding time of the plied FDY and POY nascent fibers in the multi-roll winder is 30 min.
The invention has the beneficial effects that: the invention provides a production system and a preparation method of nylon composite yarn, POY fiber is directly combined and mixed with FDY fiber through a buncher without passing through a hot roller and a yarn separating roller in a hot box, the nylon fiber with unique style and hand feeling is prepared, and the innovation of products of downstream enterprises is assisted.
Drawings
FIG. 1 is a schematic structural diagram of a production system of nylon composite yarn,
fig. 2 is a front view of fig. 1.
FIG. 3 is a process flow diagram of a preparation method of a production system of nylon composite yarns.
FIG. 4 is a table comparing the performance tests of the experimental samples with those of the control samples.
Fig. 5 is a schematic structural view of the buncher.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the embodiments of the invention are not limited thereto, and various substitutions and modifications can be made without departing from the technical idea of the invention and the conventional means and knowledge in the art, and are intended to be included in the scope of the invention.
Referring to fig. 1 to 5, the present invention provides a production system of a chinlon composite yarn, which includes a wall plate 1, wherein the wall plate 1 is provided with a spinning assembly 2 for producing FDY and POY primary fibers, a pre-networking device 3 for improving oiling uniformity of tows, an FDY yarn guide disc set for drafting the FDY primary fibers, a POY yarn guide disc set for drafting the POY primary fibers, a hot box 6 for heat setting and drafting the FDY and POY primary fibers, and a buncher 7 for stranding the FDY and POY primary fibers; the buncher comprises a comb-shaped yarn separator 11, a yarn guide rod 12, a support frame 13 and a top yarn hole 14, a composite yarn guide disc 8 for drawing the stranded nylon composite yarn, a main network 9 for improving the cohesive force of the nylon composite yarn and a multi-roller winder (not shown) for winding the nylon composite yarn, wherein the spinning assembly 2 is arranged at the upper right corner of the wallboard 1, the pre-network device 3 is arranged below the spinning assembly 2, the composite yarn guide disc 8 is arranged at the upper left corner of the wallboard 1, the main network 9 and the buncher 7 are arranged below the composite yarn guide disc 8, the main network 9 is arranged at the left side of the buncher 7, the multi-roller winder (not shown) is arranged below the main network 9, the hot box 6 is arranged below the buncher 7, the FDY yarn is arranged below the hot box 6, the POY guide wire disc group is arranged below the FDY guide wire disc group; the production system also comprises a suction gun for drawing the FDY and POY primary fibers produced by the spinning assembly 2.
With continuing reference to fig. 1-2, the spin pack assembly 2 includes a POY spin-producing machine and an FDY spin-producing machine.
With continued reference to fig. 1-2, the FDY godet assembly includes a GR1 godet 41 and a GR2 godet 42, the GR1 godet 41 being located to the right of the GR2 godet 42.
With continued reference to fig. 1-2, the POY godet set includes a GR3 godet 51 and a GR4 godet 52, the GR3 godet 51 being located to the right of the GR4 godet 52.
With reference to fig. 1 to 2, a heat roller 61 and a filament separating roller 62 are disposed in the heat box 6, the filament separating roller 62 is located above the heat roller 61, a filament outlet is disposed at the top of the heat box 6, and a filament inlet is disposed at the bottom of the heat box 6.
With reference to fig. 1 to 3, the present invention provides a method for preparing a nylon composite yarn through a nylon composite yarn production system, wherein the method comprises the following steps:
step S1: the spinning assembly 2 sprays FDY and POY nascent fibers, the FDY and POY nascent fibers are introduced into a pre-networking device 3 by a filament suction gun after oiling, and the FDY and POY nascent fibers are divided into filaments;
step S2: FDY (fully drawn yarn) nascent fibers sequentially pass through a GR1 godet 41 and a GR2 godet 42 from a filament suction gun, enter a hot box 6 through a filament inlet of the hot box 6, and are heated and shaped through a hot roller 61 and a filament separating roller 62 in the hot box 6; POY (pre-oriented yarn) nascent fibers sequentially pass through a GR3 godet 51 and a GR4 godet 52 from a yarn suction gun, enter a hot box 6 through a yarn inlet of the hot box 6 and do not pass through a hot roller 61 and a yarn separating roller 62;
step S3, outputting the FDY nascent fibers and the POY nascent fibers from a filament outlet of the hot box 6, and plying the FDY nascent fibers and the POY nascent fibers in the buncher 7;
step S4: the plied FDY and POY nascent fibers are drafted by a composite godet 8 and enter a main network device 9, and finally enter a multi-roll winder (not shown) through the main network device 9 for winding and shaping to obtain the nylon composite yarn.
With reference to fig. 1 to 3, the winding speed of the GR1 godet 41 and the GR2 godet 42 is 2700 to 4400 m/min; the winding speed of the GR3 godet 51 and the GR4 godet 52 is 4200-4300 m/min; the winding speed of the composite godet 8 is 4200-4400 m/min.
With reference to fig. 1 to fig. 3, the winding speed of the hot roller 61 is 4200-4400 m/min; the winding speed of the yarn dividing roller 62 is 4200-4400 m/min, and the number of yarn hanging turns is 4-8 turns (the number of turns of spinning around the hot roller and the yarn dividing roller).
With reference to fig. 1 to 3, the pressure of the pre-networking device 3 is 1.2 to 1.5 bar; the pressure of the main network device 9 is 3.5-3.8 bar; the winding time of the plied FDY and POY nascent fibers in the multi-roll winder (not shown) was 30 min.
Example 1
Preparation method of 40D/12F +40D/12F chinlon composite yarn
Spinning the nylon nascent fiber by the spinning assembly, oiling, introducing the nascent fiber into a pre-networking device by using a yarn suction gun, manually dividing the nylon nascent fiber (POY nascent fiber) of 1/2 from the yarn suction gun through a GR3 godet and a GR4 godet in sequence, and passing the nylon nascent fiber (FDY nascent fiber) of 1/2 from the yarn suction gun through GR1 and GR2 in sequence; the FDY chinlon nascent fiber passes through GR2, then enters from a hot box yarn inlet, and is heated and shaped by a hot roller and a yarn dividing roller in sequence; POY nylon fibers are output from a GR4 godet, then enter from a hot box yarn inlet, and are output from a hot box yarn outlet together with FDY nylon fibers output from a yarn dividing roller to enter a buncher for stranding, then pass through a composite godet and a main network unit, and finally enter a multi-roller winder for winding and forming, so that the nylon composite fibers (experiment sample 1) are obtained. The spinneret plate specification of the spinning assembly is as follows: the diameter is 77mm, 12 holes are formed, the specification of the metal sand is 40-80 meshes, and the filter screen of the component is 20 mu; GR1 godet and GR2 godet winding speed 2705 m/min; the winding speed of the GR3 godet and the GR4 godet is 4220 m/min; pre-networking device pressure 1.30 bar; the winding speed of the hot roller is 4325m/min, the winding speed of the dividing roller is 4325m/min, and the number of filament hanging turns is 5.5 turns; the winding speed of the composite godet is 4255m/min, the pressure of the main network device is 3.5-3.8 bar, and the winding time of the multi-roller winding mechanism is 30 min.
Example 2
Preparation method of 40D/48F +40D/48F chinlon composite yarn
Spinning the nylon nascent fiber by the spinning assembly, oiling, introducing the nascent fiber into a pre-networking device by using a yarn suction gun, manually dividing the nylon nascent fiber (POY nascent fiber) of 1/2 from the yarn suction gun through a GR3 godet and a GR4 godet in sequence, and passing the nylon nascent fiber (FDY nascent fiber) of 1/2 from the yarn suction gun through GR1 and GR2 in sequence; the FDY chinlon nascent fiber passes through GR2, then enters from a hot box yarn inlet, and is heated and shaped by a hot roller and a yarn dividing roller in sequence; POY nylon fibers are output from a GR4 godet, then enter from a hot box yarn inlet, and are output from a hot box yarn outlet together with FDY nylon fibers output from a yarn dividing roller to enter a buncher for stranding, then pass through a composite godet and a main network unit, and finally enter a multi-roller winder for winding and forming, so that the nylon composite fibers (experiment sample 2) are obtained. The spinneret plate specification of the spinning component is as follows: the diameter is 77mm, 48 holes are formed, the specification of the metal sand is 40-80 meshes, and the filter screen of the component is 15 mu; GR1 godet and GR2 godet winding speed 2703 m/min; the winding speed of the GR3 godet and the GR4 godet is 4218 m/min; pre-networking device pressure 1.35 bar; the winding speed of the hot roller is 4325m/min, the winding speed of the dividing roller is 4325m/min, and the number of filament hanging turns is 5.5 turns; the winding speed of the composite godet is 4255m/min, the pressure of a main network device is 3.65bar, and the winding time of the multi-roller winding mechanism is 30 min.
Example 3
Preparation method of 40D/12F +40D/48F chinlon composite yarn
Spinning the nylon nascent fiber by the spinning assembly, oiling, introducing the nascent fiber into a pre-networking device by using a yarn suction gun, manually dividing the nylon nascent fiber (POY nascent fiber) of 1/2 from the yarn suction gun through a GR3 godet and a GR4 godet in sequence, and passing the nylon nascent fiber (FDY nascent fiber) of 1/2 from the yarn suction gun through GR1 and GR2 in sequence; the FDY chinlon nascent fiber passes through GR2, then enters from a hot box yarn inlet, and is heated and shaped by a hot roller and a yarn dividing roller in sequence; POY nylon fibers are output from a GR4 godet, then enter from a hot box yarn inlet, and are output from a hot box yarn outlet together with FDY nylon fibers output from a yarn dividing roller to enter a buncher for stranding, then pass through a composite godet and a main network unit, and finally enter a multi-roller winder for winding and forming, so that the nylon composite fibers (experiment sample 3) are obtained. The spinneret plate specification of the spinning component is as follows: the diameter is 77mm, 12 holes are formed, the specification of the metal sand is 40-80 meshes, and the filter screen of the component is 20 mu; GR1 godet and GR2 godet winding speed 2705 m/min; the winding speed of the GR3 godet and the GR4 godet is 4225 m/min; pre-network device pressure 1.40 bar; the winding speed of the hot roller is 4325m/min, the winding speed of the dividing roller is 4325m/min, and the number of filament hanging turns is 5.5 turns; the winding speed of the composite godet is 4255m/min, the pressure of a main network device is 3.65bar, and the winding time of the multi-roller winding mechanism is 30 min.
Example 4
Preparation method of 45D/12F +45D/12F chinlon composite yarn
Spinning the nylon nascent fiber by the spinning assembly, oiling, introducing the nascent fiber into a pre-networking device by using a yarn suction gun, manually dividing the nylon nascent fiber (POY nascent fiber) of 1/2 from the yarn suction gun through a GR3 godet and a GR4 godet in sequence, and passing the nylon nascent fiber (FDY nascent fiber) of 1/2 from the yarn suction gun through GR1 and GR2 in sequence; the FDY chinlon nascent fiber passes through GR2, then enters from a hot box yarn inlet, and is heated and shaped by a hot roller and a yarn dividing roller in sequence; POY nylon fiber is output from a GR4 godet, then enters from a hot box yarn inlet, and is output from a hot box yarn outlet together with FDY nylon fiber output from a yarn dividing roller, and then enters a buncher for stranding, then passes through a composite godet and a main network unit, and finally enters a multi-roller winder for winding and forming, so that the nylon composite fiber (an experimental sample 4) is obtained, and the specification of a spinneret plate of the spinning assembly is as follows: the diameter is 77mm, 12 holes are formed, the specification of the metal sand is 40-80 meshes, and the filter screen of the component is 15 mu; the winding speed of the GR1 godet is 2665m/min, and the winding speed of the GR2 godet is 4270 m/min; the winding speed of the GR3 godet and the GR4 godet is 4220 m/min; pre-networking device pressure 1.30 bar; the winding speed of the hot roller is 4325m/min, the winding speed of the dividing roller is 4325m/min, and the number of filament hanging turns is 5; the winding speed of the composite godet is 4300m/min, the pressure of the main network device is 3.65bar, and the winding time of the multi-roller winding mechanism is 30 min.
The above experimental samples 1 to 4 were tested for fineness, breaking strength, elongation at break, and boiling water shrinkage, and the production efficiency was compared, and the results are shown in fig. 4.
It should be noted that the spinning production machine, the pre-network device, the main network device, the buncher, the multi-roller winder, the hot roller, the yarn separating roller and the like in the invention are all the prior art, wherein the types can be as follows: spinning pack 70 #; pre-networker PT 291Z; FDY guide wire disk group 430-1-231Z; POY guide wire disk groups 430-1-234Z; hot box 420 x 465 x 800; composite godet 430-1-231Z; a master network device HZ 163-T12L; a multi-roll winder ACW 6T-1500/10; the suction gun BARY-FDY-CHS5 is not limited thereto, but it is clear to those skilled in the art that the detailed description thereof is omitted here.
The above description is only a preferred embodiment of the present invention, and should not be construed as limiting the present invention, and all equivalent variations and modifications made in the claims of the present invention should be covered by the present invention.

Claims (9)

1. A production system of polyamide composite yarn is characterized in that: the production system comprises a wallboard, wherein a spinning assembly for producing FDY and POY nascent fibers, a pre-network device for improving oiling uniformity of tows, an FDY yarn guide disc group for drafting the FDY nascent fibers, a POY yarn guide disc group for drafting the POY nascent fibers, a hot box for performing heat setting and drafting on the FDY and POY nascent fibers, a buncher for stranding the FDY and POY nascent fibers, a composite yarn guide disc for drafting the stranded polyamide composite yarns, a main network device for improving cohesive force of the polyamide composite yarns and a multi-roller winder for winding the polyamide composite yarns are arranged on the wallboard, the spinning assembly is arranged at the upper right corner of the wallboard, the pre-network device is arranged below the spinning assembly, the composite yarn guide disc is arranged at the upper left corner of the wallboard, and the main network device and the buncher are arranged below the composite yarn guide disc, the main network device is located at the left side of the buncher, the multi-roll winder is located below the main network device, the hot box is arranged below the buncher, the FDY wire disc group is arranged below the hot box, and the POY wire disc group is arranged below the FDY wire disc group; the production system also comprises a suction gun for drawing the FDY and POY primary fibers produced by the spinning assembly.
2. The production system of nylon composite yarn according to claim 1, characterized in that: the spinning assembly comprises a POY spinning production machine and an FDY spinning production machine.
3. The production system of nylon composite yarn according to claim 1, characterized in that: the FDY godet group includes GR1 godet and GR2 godet, GR1 godet is located the right-hand side of GR2 godet.
4. The production system of nylon composite yarn according to claim 1, characterized in that: the POY godet group comprises a GR3 godet and a GR4 godet, and the GR3 godet is positioned at the right side of the GR4 godet.
5. The production system of nylon composite yarn according to claim 1, characterized in that: the hot box is internally provided with a hot roller and a wire separating roller, the wire separating roller is positioned above the hot roller, the top of the hot box is provided with a wire outlet, and the bottom of the hot box is provided with a wire inlet.
6. The preparation method of the production system of nylon composite yarns as claimed in claim 1, wherein the preparation method comprises the following steps:
step S1: the spinning assembly sprays FDY and POY nascent fibers, the FDY and POY nascent fibers are introduced into a pre-networking device by a filament suction gun after oiling, and the FDY and POY nascent fibers are divided;
step S2: FDY nascent fibers sequentially pass through a GR1 godet and a GR2 godet from a filament suction gun, enter a hot box through a filament inlet of the hot box, and are heated and shaped through a hot roller and a filament dividing roller in the hot box; POY nascent fiber sequentially passes through a GR3 godet and a GR4 godet from a filament suction gun, enters a hot box through a filament inlet of the hot box and does not pass through a hot roller and a filament separating roller;
step S3, outputting the FDY nascent fibers and the POY nascent fibers from a filament outlet of a hot box, and plying the FDY nascent fibers and the POY nascent fibers in a buncher;
step S4: and drafting the plied FDY and POY nascent fibers by a composite yarn guide disc, entering a main network device, and finally entering a multi-roller winder for winding and shaping through the main network device to obtain the nylon composite yarn.
7. The preparation method of the production system of nylon composite yarn according to claim 6, characterized in that: the winding speed of the GR1 godet and the GR2 godet is 2700-4400 m/min; the winding speed of the GR3 godet and the GR4 godet is 4200-4300 m/min; the winding speed of the composite godet is 4200-4400 m/min.
8. The preparation method of the production system of nylon composite yarn according to claim 6, characterized in that: the winding speed of the hot roller is 4200-4400 m/min; the winding speed of the yarn dividing roller is 4200-4400 m/min, and the number of yarn hanging turns is 4-8.
9. The preparation method of the production system of nylon composite yarn according to claim 6, characterized in that: the pressure of the pre-networking device is 1.2-1.5 bar; the pressure of the main network device is 3.5-3.8 bar; the winding time of the plied FDY and POY nascent fibers in the multi-roll winder was 30 min.
CN202210454659.9A 2022-04-27 2022-04-27 Production system and preparation method of polyamide composite yarn Pending CN114703572A (en)

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Publication number Priority date Publication date Assignee Title
DE10053073A1 (en) * 2000-05-16 2002-05-08 Barmag Barmer Maschf Assembly for the production of melt spun thermoplastic filament, to produce more than six, has a tangling unit between the filament gathering guide and the drawing stage
CN101265627A (en) * 2007-05-16 2008-09-17 桐昆集团股份有限公司 Terylene half speed blended spinning-type ammonia-substituted fiber blended spinning method and its apparatus
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Application publication date: 20220705