CN114164504A - Production process of large-diameter polyester monofilament - Google Patents

Production process of large-diameter polyester monofilament Download PDF

Info

Publication number
CN114164504A
CN114164504A CN202111522745.0A CN202111522745A CN114164504A CN 114164504 A CN114164504 A CN 114164504A CN 202111522745 A CN202111522745 A CN 202111522745A CN 114164504 A CN114164504 A CN 114164504A
Authority
CN
China
Prior art keywords
extension
temperature
metering pump
polyester
die head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111522745.0A
Other languages
Chinese (zh)
Inventor
沈华锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Baoli Special Silk Industry Co ltd
Original Assignee
Zhejiang Baoli Special Silk Industry Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Baoli Special Silk Industry Co ltd filed Critical Zhejiang Baoli Special Silk Industry Co ltd
Priority to CN202111522745.0A priority Critical patent/CN114164504A/en
Publication of CN114164504A publication Critical patent/CN114164504A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • D01D1/02—Preparation of spinning solutions
    • 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
    • D01D1/06—Feeding liquid to the spinning head
    • 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
    • D01D13/00—Complete machines for producing artificial threads
    • 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
    • D01D5/0885—Cooling filaments, threads or the like, leaving the spinnerettes by means of a liquid
    • 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
    • D01D5/12—Stretch-spinning methods
    • D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters

Abstract

The invention discloses a production process of a large-diameter polyester monofilament, which comprises the following steps: feeding; drying and dehumidifying; extruding; first extension: the speed is 30-32 m/min; hot water stretching; and (3) second extension: speed 120-; stretching with hot air; and (3) third extension: the speed is 170-185 m/min; shaping at high temperature; oiling; fourth extension: the speed of the fourth extension is lower than that of the third extension and higher than that of the second extension; and (4) winding. The invention relates to a production process of large-diameter polyester monofilaments, which adopts multi-stage extension and is subjected to hot water stretching, hot air stretching and high-temperature shaping, so that the internal stress of the monofilaments is eliminated by the heat shaping, and the physical and mechanical properties of the monofilaments are further improved. The breaking strength of the prepared polyester monofilament is improved, the breaking elongation is reduced, and the application prospect is expanded.

Description

Production process of large-diameter polyester monofilament
Technical Field
The invention relates to the technical field of polyester monofilament production, in particular to a production process of a large-diameter polyester monofilament.
Background
The major diameter melt spinning polymer monofilament is a single fiber with the diameter of 0.08mm to 5mm, and compared with nano fiber, superfine fiber, fine denier fiber, conventional fiber and conventional monofilament, the major process characteristics of the major diameter melt spinning polymer monofilament are large-capacity single-hole melt extrusion, liquid cooling, low nozzle stretch ratio and multistage stretching.
The polymer monofilament has good wear resistance, better use effect than metal wire, higher rigidity than multifilament, can enhance the fabric in a certain designated direction when used for special weaving, and has low specific surface area and high volume, so that the fabric is not easy to be polluted and is helpful for resisting hydrolysis. The large diameter monofilaments can be used in the filtration industry and are widely used in various fields such as textile industrial fabrics, cable jackets, paper machine drying fabrics, industrial mesh belt conveyors, non-woven fabrics, various industrial brushes, fishing lines, and the like.
The large-diameter polyester monofilament is a latest product of industrial polyester yarns and is mainly characterized by high modulus and low shrinkage. From the aspect of drawing, high-power drawing is the most main characteristic of preparing large-diameter monofilaments, and the monofilaments are required to have a structure with high crystallization, high orientation and high regularity to achieve strong and tough mechanical properties.
The existing large-diameter polyester monofilament, particularly the polyester monofilament with the diameter of 0.3mm-0.5mm, is unsatisfactory in the aspect of monofilament toughness, and influences the application prospect of the monofilament in the field of industrial textiles.
Disclosure of Invention
The invention aims to provide a production process of large-diameter polyester monofilaments, and the prepared polyester monofilaments have good breaking strength.
In order to solve the technical problem, the invention aims to realize that:
the invention relates to a production process of a large-diameter polyester monofilament, which comprises the following steps:
1) feeding: uniformly mixing the transparent polyester slices and the semi-dull polyester slices in proportion by adopting stirring equipment, and placing the mixture in a hopper;
2) drying and dehumidifying: drying and dehumidifying the uniformly mixed raw materials, and removing moisture; the drying temperature is controlled to be 90-120 ℃, the temperature is controlled to be 130-160 ℃ during dehumidification, and the drying and dehumidification time is 4 h;
3) extruding: preheating the screw area, the die head, the metering pump and the cooling water tank; the screw zone is preheated to 260-305 ℃, the die head and the metering pump are preheated to 295-305 ℃, and the temperature of cooling water in the cooling water tank is preheated to 65-75 ℃;
after preheating, turning on a metering pump, and controlling the rotating speed at 10-13 r/min; then the host is opened to feed, the pressure is increased to 8.0MPa, and the rotating speed of the metering pump is controlled to be adjusted to 20.5-22 r/min; pushing the cooling water tank to the lower part of the die head for splitting filaments;
4) first extension: adjusting the speed of the first extension to 30-32 m/min;
5) hot water stretching: controlling the water temperature at 90-95 ℃ and the treatment time at 5-10 s;
6) and (3) second extension: adjusting the second extension speed to 120-130 m/min;
7) hot air stretching: controlling the temperature of the hot air at 230 ℃ and 240 ℃ and the treatment time at 5-10 s;
8) and (3) third extension: adjusting the third extension speed to 170-185 m/min;
9) high-temperature shaping: the temperature of the setting oven is adjusted to 230-240 ℃, and the processing time is 15-20 s;
10) oiling: each monofilament is ensured to be oiled;
11) fourth extension: the speed of the fourth extension is lower than that of the third extension and higher than that of the second extension;
12) and (4) winding.
On the basis of the above scheme and as a preferable scheme of the scheme: the transparent polyester chip and the semi-dull polyester chip are prepared according to the following steps of 2: 1 by weight ratio.
On the basis of the above scheme and as a preferable scheme of the scheme: the screw zone comprises a first material barrel zone, a second material barrel zone, a third material barrel zone, a fourth material barrel zone and a fifth material barrel zone; the die head comprises a die head A and a die head B; the metering pump comprises a metering pump A and a metering pump B; the first section of the charging barrel is preheated to 270 ℃, and the second section of the charging barrel, the third section of the charging barrel, the fourth section of the charging barrel, the fifth section of the charging barrel, the die head A, the die head B, the metering pump A and the metering pump B are all preheated to 305 ℃.
On the basis of the above scheme and as a preferable scheme of the scheme: the number of the setting ovens is three, and the temperature of the setting ovens is firstly reduced and then increased along the running direction of the polyester monofilaments.
On the basis of the above scheme and as a preferable scheme of the scheme: the speed of the fourth elongation was 140 m/min.
On the basis of the above scheme and as a preferable scheme of the scheme: the hot water stretching is that the water temperature is gradually reduced along the running direction of the polyester monofilament.
On the basis of the above scheme and as a preferable scheme of the scheme: the melt is passed through a screen before it is subjected to the die.
On the basis of the above scheme and as a preferable scheme of the scheme: the diameter of the polyester monofilament prepared by the production process is 0.3mm-0.5 mm.
Compared with the prior art, the method has the following advantages: the invention relates to a production process of large-diameter polyester monofilaments, which adopts multi-stage extension and is subjected to hot water stretching, hot air stretching and high-temperature shaping, so that the internal stress of the monofilaments is eliminated by the heat shaping, and the physical and mechanical properties of the monofilaments are further improved. The breaking strength of the prepared polyester monofilament is improved, the breaking elongation is reduced, and the application prospect is expanded.
Drawings
FIG. 1 is a flow diagram of a production process according to the present invention;
FIG. 2 is a schematic cross-sectional view of a stirring apparatus.
In the figure, 1-a fixing frame; 2-stirring barrel; 3-discharging port; 4-screw rod; 5-a feeding hopper; 6-material cleaning; 7-circulating blanking port; 8-an electric box; 9-a drive device; 91-a motor; 92-a belt; 10-a ladder; 11-a window; 12-a service hole; 13-feeding port.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
The present invention will be described in detail with reference to fig. 1 and 2. The production process of the large-diameter polyester monofilament related to the embodiment comprises the following steps: feeding → drying and dehumidifying → extruding → first extending → hot water stretching → second extending → hot air stretching → third extending → high temperature shaping and oiling → fourth extending → winding. The diameter of the polyester monofilament prepared by the production process is 0.3mm-0.5 mm. In this example, 0.3mm is used as an example for explanation.
In the step 1) of feeding, uniformly mixing the transparent polyester chips and the semi-dull polyester chips in proportion by adopting stirring equipment, and placing the mixture in a hopper. Specifically, the transparent polyester chip and the semi-dull polyester chip are prepared according to the following steps of 2: 1 by weight ratio. And can be adjusted according to requirements.
The stirring equipment comprises a fixed frame 1 and a stirring barrel 2 arranged on the fixed frame 1; the bottom of the stirring barrel 2 is in an inverted cone shape and is provided with two discharge ports 3, and each discharge port 3 is provided with a discharge hopper; a screw rod 4 is vertically arranged at the center of the stirring barrel 2, the bottom of the screw rod 4 protrudes out of the stirring barrel 2 and is connected with a feeding hopper 5, and a material cleaning port 6 is also arranged at the bottom of the screw rod 4; the stirring barrel 2 is also provided with a circulating blanking port 7, one end of the circulating blanking port 7 is communicated with the stirring barrel 2, the other end of the circulating blanking port 7 is inclined downwards and is positioned above the feeding hopper 5, and an electric box 8 for controlling the circulating blanking port 7 is arranged on the circulating blanking port 7; the top of the screw rod 4 is connected with a driving device 9, and the driving device 9 comprises a motor 91 and a belt 92; the motor 91 is arranged at the top of the fixed frame 1 and drives the screw rod 4 to rotate in a belt 92 transmission mode; the stirring barrel 2 is further provided with a people ladder 10, and a window 11 and an access hole 12 are arranged on the surface of the stirring barrel 2 close to the people ladder 10.
Specifically, each discharge port 3 is provided with a discharge hopper, the discharge hoppers can move freely, and particles uniformly stirred in the discharge hoppers on the two sides can be sucked by drying equipment to perform a drying process. Further, a people ladder 10 is further arranged on the stirring barrel 2, and a window 11 and an access hole 12 are arranged on the surface of the stirring barrel 2 close to the people ladder 10. When equipment breaks down or needs overhaul, people's ladder 10 makes things convenient for the staff to overhaul, and the inside condition of agitator 2 can be observed to window 11, after judging particular case, can maintain in access hole 12 or open the bung and get into agitator 2.
Further, discharge gate 3 sets up the least significant end of 2 back taper bottoms of agitator, and the axis perpendicular to agitator 2's of discharge gate 3 bottom. The discharge port 3 is arranged at the lowest end of the inverted conical bottom of the stirring barrel 2, so that materials can be smoothly discharged under the action of self gravity; the axis of the discharge port 3 is perpendicular to the bottom of the stirring barrel 2, so that the materials can be completely discharged from the stirring barrel 2. Preferably, the discharge port 3 and the circular blanking port 7 can be arranged on the same plane to ensure complete discharge of the materials. Still further, discharge gate 3 and circulation blanking mouth 7 on still be provided with the valve, can make the export just carry out the ejection of compact when needing like this.
Further, the batch hopper 5 is provided with the movable valve near 4 one sides of screw rod, covers pan feeding mouth 13, and hand touch touches the screw rod when can preventing like this reinforced, and then has prevented that the hand from by pivoted screw rod fish tail, and then makes reinforced safer, high-efficient. Preferably, the movable valve can slide freely along the moving direction of the screw rod 4, so that whether the material is fed or not can be controlled: when the movable valve is opened, the working procedure works normally; when the movable valve is closed, the feeding hopper 5 can play a role in storing materials, and the circulating blanking port 7 is similar to a discharging port. Furthermore, a heating system and a temperature control system are arranged on the screw 4, so that preliminary drying and dehumidification can be performed. Still further, the heating system and the temperature control system are controlled by the electrical box 8. Thus, the electric box 8 can control the material mixing and the temperature control system of the screw rod. Preferably, the top of the stirring barrel 2 is hinged with a barrel cover, and the stirring barrel 2 and the barrel cover are made of stainless steel.
The direction of flow of the material is shown by the arrows in figure 2.
The working process of the stirring device is as follows:
when material particles need to be placed into the stirring barrel 2 for stirring, the valves of the circulating material port 7 and the material outlet are closed, the movable valve on the feeding hopper 5 is opened in a sliding mode along the moving direction of the screw rod 4, the material particles can penetrate through the feeding port 13 under the action of self gravity to be contacted with the screw rod 4, the screw rod 4 continuously conveys the material particles into the stirring barrel 2 in the continuous rotating process, and the material particles in the feeding hopper 5 are continuously reduced. When the weight of the plastic particles is reduced to a certain amount, the plastic particles cannot spontaneously move into the feeding port 13, the plastic particles are required to be stirred into the feeding port 6 by a worker, the movable valve on the feeding hopper 5 is closed, and the movable valve cannot enter the feeding port 6 due to the blockage of the hand in the stirring process, so that the hand cannot contact with the screw rod 4, and the hand is protected from being scratched; when the plastic particles in the mixing drum 2 need to be mixed again, the movable valve is pulled open. When the materials need to be mixed for a plurality of times, the valve of the circulating blanking port 7 is opened, so that the materials flow into the feeding hopper 7 again and enter the screw rod 4.
After the materials are uniformly mixed, closing a movable valve on the feeding hopper 5, and firstly opening a valve at a discharge port to enable the materials to fall into the discharging hopper; when the discharge hopper is full, the valve of the discharge port can be closed, the valve of the circulating material port 7 is opened, and the feeding hopper 5 can temporarily store redundant uniform materials in the stirring barrel 2.
In the step 2), drying and dehumidifying the uniformly mixed raw materials to remove moisture; the drying temperature is controlled to be 90-120 ℃, the temperature is controlled to be 130-160 ℃ during dehumidification, the drying and dehumidification time is 4h, and the water content of the polyester chip is less than or equal to 15 multiplied by 10-6Fluctuation value ≦ 3 × 10-6And meets the requirements during production.
In the extrusion in the step 3), preheating a screw area, a die head, a metering pump and a cooling water tank; the screw zone is preheated to 260-305 ℃, the die head and the metering pump are preheated to 295-305 ℃, and the temperature of cooling water in the cooling water tank is preheated to 65-75 ℃, specifically 70 ℃.
The extrusion apparatus used in the present invention was 2 dies. The screw zone comprises a first material barrel zone, a second material barrel zone, a third material barrel zone, a fourth material barrel zone and a fifth material barrel zone; the die head comprises a die head A and a die head B; the metering pump comprises a metering pump A and a metering pump B; the first section of the charging barrel is preheated to 270 ℃, and the second section of the charging barrel, the third section of the charging barrel, the fourth section of the charging barrel, the fifth section of the charging barrel, the die head A, the die head B, the metering pump A and the metering pump B are all preheated to 305 ℃.
Specifically, in the invention, the first barrel area is preheated to 265 ℃, and the second barrel area, the third barrel area, the fourth barrel area and the fifth barrel area are respectively preheated to 295 ℃, 300 ℃ and 305 ℃. The die head A and the die head B are respectively preheated to 305 ℃, and the metering pump A and the metering pump B are both preheated to 305 ℃.
After preheating, opening a metering pump A and a metering pump B, and controlling the rotating speed at 10-13 revolutions per minute; then the host is opened for feeding, the pressure is increased to 8.0MPa, and the rotating speeds of the metering pump A and the metering pump B are controlled to be adjusted to 20.5-22 r/min; and pushing the cooling water tank to the lower parts of the die head A and the die head B for dividing filaments. The melt is passed through a screen before it is subjected to the die.
Cooling with water results in a very rapid cooling effect, which shortens the residence time of the high polymer at the highest crystallization rate temperature. After the melt fine liquid is extruded from spinneret orifices, the melt fine liquid firstly enters an air layer and then enters cooling water, namely the melt fine liquid is refined at the same temperature and then is cooled by liquid. During water cooling, the resistance experienced by the as-spun filaments is much higher than in air. The melt stream is vertically passed through a cooling water box and then leaves the cooling water box through a path that is redirected by a godet, and the distance between the godet and the jet must exceed the solidification point of the melt stream. In the present invention, the distance between the godet roll and the spinneret is 45-60cm, specifically 45 cm.
In the step 4) of first extension, the speed of the first extension is adjusted to 30-32 m/min. In the first extension, the influence on the fracture strength under the condition of large change of the cross section can be effectively avoided by adopting a smaller extension multiple.
In the step 5) of hot water stretching, the water temperature is controlled to be 90-95 ℃, and the treatment time is 5-10 s. And the water temperature is gradually reduced along the running direction of the polyester monofilament in the step. Namely, in the step, the water tank is divided into three sections, the water temperature is respectively 95 ℃, 93 ℃ and 90 ℃, and the treatment time of each section is 2 s.
In the step 6) of the second extension, the speed of the second extension is adjusted to 120-130 m/min. Specifically, in this step, the speed was 125 m/min.
In the step 7), the temperature of the hot air is controlled at 230-240 ℃ during the hot air stretching, and the treatment time is 5-10 s. The specific temperature was 235 ℃ and the treatment time was 6 s.
In the step 8) of the third extension, the speed of the third extension is adjusted to 185m/min, specifically 180 m/min.
In step 9), high-temperature setting: the temperature of the setting oven is adjusted to 230-240 ℃, and the processing time is 15-20 s. The number of the setting ovens is three, and the temperature of the setting ovens is firstly reduced and then increased along the running direction of the polyester monofilaments. The temperatures of the three shaping ovens are 230 ℃, 240 ℃ and 235 ℃ in sequence.
Oiling in step 10): each monofilament is ensured to be oiled.
In step 11) a fourth extension: the speed of the fourth stretching is lower than that of the third stretching and higher than that of the second stretching. Specifically, the speed of the fourth elongation is 140 m/min.
In step 12) winding.
The prepared polyester monofilament is tested, the monofilament diameter is 0.3mm, and the roundness is more than 95 percent and reaches 98 percent. The breaking strength of the material reaches 8.9cN/dtex, and the requirement of not less than 7.0cN/dtex is met. The elongation at break of the polyester monofilament was 13.4%, normalized to 11-15%.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (8)

1. A production process of large-diameter polyester monofilaments is characterized by comprising the following steps:
1) feeding: uniformly mixing the transparent polyester slices and the semi-dull polyester slices in proportion by adopting stirring equipment, and placing the mixture in a hopper;
2) drying and dehumidifying: drying and dehumidifying the uniformly mixed raw materials, and removing moisture; the drying temperature is controlled to be 90-120 ℃, the temperature is controlled to be 130-160 ℃ during dehumidification, and the drying and dehumidification time is 4 h;
3) extruding: preheating the screw area, the die head, the metering pump and the cooling water tank; the screw zone is preheated to 260-305 ℃, the die head and the metering pump are preheated to 295-305 ℃, and the temperature of cooling water in the cooling water tank is preheated to 65-75 ℃;
after preheating, turning on a metering pump, and controlling the rotating speed at 10-13 r/min; then the host is opened to feed, the pressure is increased to 8.0MPa, and the rotating speed of the metering pump is controlled to be adjusted to 20.5-22 r/min; pushing the cooling water tank to the lower part of the die head for splitting filaments;
4) first extension: adjusting the speed of the first extension to 30-32 m/min;
5) hot water stretching: controlling the water temperature at 90-95 ℃ and the treatment time at 5-10 s;
6) and (3) second extension: adjusting the second extension speed to 120-130 m/min;
7) hot air stretching: controlling the temperature of the hot air at 230 ℃ and 240 ℃ and the treatment time at 5-10 s;
8) and (3) third extension: adjusting the third extension speed to 170-185 m/min;
9) high-temperature shaping: the temperature of the setting oven is adjusted to 230-240 ℃, and the processing time is 15-20 s;
10) oiling: each monofilament is ensured to be oiled;
11) fourth extension: the speed of the fourth extension is lower than that of the third extension and higher than that of the second extension;
12) and (4) winding.
2. The process for producing large-diameter polyester monofilament as claimed in claim 1, wherein the ratio of the transparent polyester chip to the semi-dull polyester chip is 2: 1 by weight ratio.
3. The process for producing large-diameter polyester monofilaments according to claim 1, wherein the screw zone comprises a first barrel zone, a second barrel zone, a third barrel zone, a fourth barrel zone and a fifth barrel zone; the die head comprises a die head A and a die head B; the metering pump comprises a metering pump A and a metering pump B; the first section of the charging barrel is preheated to 270 ℃, and the second section of the charging barrel, the third section of the charging barrel, the fourth section of the charging barrel, the fifth section of the charging barrel, the die head A, the die head B, the metering pump A and the metering pump B are all preheated to 305 ℃.
4. The process for producing large-diameter polyester monofilament according to claim 1, wherein the number of the setting ovens is three, and the temperature of the setting ovens is first decreased and then increased along the running direction of the polyester monofilament.
5. The process for producing large-diameter polyester monofilament as claimed in claim 1, wherein the speed of the fourth drawing is 140 m/min.
6. The process for producing large-diameter polyester monofilament as claimed in claim 1, wherein the hot water drawing is such that the temperature of water is gradually lowered in the running direction of the polyester monofilament.
7. The process of claim 1, wherein the melt is further passed through a screen before it is subjected to the die.
8. A process for producing large-diameter polyester monofilaments according to any of the claims 1 to 7, wherein the polyester monofilaments produced by said process have a diameter of 0.3mm to 0.5 mm.
CN202111522745.0A 2021-12-13 2021-12-13 Production process of large-diameter polyester monofilament Pending CN114164504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111522745.0A CN114164504A (en) 2021-12-13 2021-12-13 Production process of large-diameter polyester monofilament

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111522745.0A CN114164504A (en) 2021-12-13 2021-12-13 Production process of large-diameter polyester monofilament

Publications (1)

Publication Number Publication Date
CN114164504A true CN114164504A (en) 2022-03-11

Family

ID=80486163

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111522745.0A Pending CN114164504A (en) 2021-12-13 2021-12-13 Production process of large-diameter polyester monofilament

Country Status (1)

Country Link
CN (1) CN114164504A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203019553U (en) * 2013-01-25 2013-06-26 武汉滨湖双鹤药业有限责任公司 Polypropylene particle stirrer
CN103469326A (en) * 2013-09-22 2013-12-25 徐州斯尔克纤维科技股份有限公司 Manufacturing method of large-diameter and high-viscosity polyester monofilament
CN105200549A (en) * 2015-09-08 2015-12-30 陈卫峰 Biodegradable polymer monofilament and production method thereof
CN206746426U (en) * 2017-03-24 2017-12-15 江苏普莱克红梅色母料股份有限公司 Color masterbatch produces quick agitator
CN207324579U (en) * 2017-07-04 2018-05-08 龙岩市永定区普惠农业科技有限公司 A kind of vertical mixer with elevating function
CN108728920A (en) * 2018-06-05 2018-11-02 无锡市万峰单丝有限公司 A kind of polyester fiber production technology
CN208323874U (en) * 2018-05-30 2019-01-04 厦门加略塑胶科技有限公司 A kind of vertical mixer
CN110747529A (en) * 2019-11-11 2020-02-04 南通新帝克单丝科技股份有限公司 Large-diameter PFA monofilament and production method thereof
CN112575405A (en) * 2020-12-28 2021-03-30 南通新帝克单丝科技股份有限公司 Large-diameter polyetherimide monofilament and preparation method thereof
CN112575396A (en) * 2020-12-22 2021-03-30 南通新帝克单丝科技股份有限公司 High-dpf polyester industrial yarn and production method thereof
CN112725963A (en) * 2020-12-22 2021-04-30 南通新帝克单丝科技股份有限公司 Large-diameter elastic monofilament and production method thereof

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203019553U (en) * 2013-01-25 2013-06-26 武汉滨湖双鹤药业有限责任公司 Polypropylene particle stirrer
CN103469326A (en) * 2013-09-22 2013-12-25 徐州斯尔克纤维科技股份有限公司 Manufacturing method of large-diameter and high-viscosity polyester monofilament
CN105200549A (en) * 2015-09-08 2015-12-30 陈卫峰 Biodegradable polymer monofilament and production method thereof
CN206746426U (en) * 2017-03-24 2017-12-15 江苏普莱克红梅色母料股份有限公司 Color masterbatch produces quick agitator
CN207324579U (en) * 2017-07-04 2018-05-08 龙岩市永定区普惠农业科技有限公司 A kind of vertical mixer with elevating function
CN208323874U (en) * 2018-05-30 2019-01-04 厦门加略塑胶科技有限公司 A kind of vertical mixer
CN108728920A (en) * 2018-06-05 2018-11-02 无锡市万峰单丝有限公司 A kind of polyester fiber production technology
CN110747529A (en) * 2019-11-11 2020-02-04 南通新帝克单丝科技股份有限公司 Large-diameter PFA monofilament and production method thereof
CN112575396A (en) * 2020-12-22 2021-03-30 南通新帝克单丝科技股份有限公司 High-dpf polyester industrial yarn and production method thereof
CN112725963A (en) * 2020-12-22 2021-04-30 南通新帝克单丝科技股份有限公司 Large-diameter elastic monofilament and production method thereof
CN112575405A (en) * 2020-12-28 2021-03-30 南通新帝克单丝科技股份有限公司 Large-diameter polyetherimide monofilament and preparation method thereof

Similar Documents

Publication Publication Date Title
CN107012522B (en) Produce the production line and its production technology of the compound short fibre of Three-dimensional crimped hollow type terylene
CN102947494A (en) Ultra-high strength UHMW PE fibers and products
KR100691913B1 (en) Method and device for producing post-stretched cellulose spun threads
CN111020730B (en) Low-melting-point polyester thermal fuse preparation equipment and process
WO2012121623A9 (en) Extrusion line for producing a flat fibre made from synthetic raw material
CN110184663A (en) A kind of production method of PLA polylactic acid color silk fiber
JP2004502880A (en) Method and apparatus for conditioning a melt spun material
CN212611018U (en) Polyester filament spinning machine
CZ295777B6 (en) Industrial polyester fibers and process of their preparation
CN112899796A (en) Preparation method of high-strength regenerated nylon 66 fiber
JP2002529614A (en) Method and apparatus for making highly oriented yarns
US20050146071A1 (en) Method for producing high tenacity polypropylene fibers
CN114164504A (en) Production process of large-diameter polyester monofilament
RU2447995C2 (en) Method of extruding flat thread from synthetic raw stock
CN115161787A (en) Preparation method of low linear density deviation special-shaped polyester POY (polyester pre-oriented yarn) filament
CN1309764C (en) A homogeneous cellulose solution and high tenacity lyocell multifilament using the same
CN107794580A (en) A kind of efficiently solution spinning machine
CN210237847U (en) PLA polylactic acid color silk fibrous apparatus for producing
CN114182365A (en) Production process of high-modulus low-shrinkage polyester monofilament
CN203393282U (en) Device for producing ribbon-like filaments by utilizing waste PET (Polyethylene Glycol Terephthalate)
CN102965746B (en) Method for producing special filaments for dacron embroidery threads
CN111719189A (en) 5D or 7D POY spinning line equipment is blown to superfine denier veneer ring
CN108950714A (en) A kind of superelevation is strong, Gao Mo, fine count fiber preparation method
CN114790590B (en) Production method and equipment for 24-head high-elastic composite pre-oriented fiber
EP0212133B1 (en) Method to prepare high strength ultrahigh molecular weight polyolefin articles by dissolving particles and shaping the solution

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20220311

RJ01 Rejection of invention patent application after publication