Production method of polyester drawn diamond yarn

Abstract

The invention discloses a production method of polyester drawn diamond yarns, which comprises a spinning manifold, a spinning metering pump, a spinning assembly, a spinning chamber, a spinning channel, an oil wheel device, a yarn guide hook, a yarn guide rod, a yarn dividing rod, a pre-network, an SR1 yarn dividing roller, a GR1 hot roller, a GR2 hot roller, an SR2 yarn dividing roller, a yarn guide hook and a TMT winding machine, the ratio of the length to the width of the linear hole is 120: (6-7); two raw materials of PTA and EG react through a polymerization device to form a polyester melt, the polyester melt is injected into a spinning metering pump on a spinning manifold through a melt pipeline, then the polyester melt is discharged through a spinning assembly, cooled and shaped through a spinning chamber, oiled through an oil wheel device and heated, drafted and shaped through a combination of an SR1 separator roller, a GR1 hot roller, a GR2 hot roller and an SR2 separator roller, and the polyester drawn diamond yarn is obtained. And winding through a TMT winding machine. The problems that an existing diamond silk production process is complex and uneven after coloring can be solved, and the refraction and flashing effects of fibers are good.

Description

Technical Field

[0001] The invention relates to the technical field of polyester fibers, and in particular to a production method of polyester drawn diamond yarns. Background Art

[0002] In order to gain a foothold in the fiercely competitive market environment, enterprises must constantly improve themselves, improve equipment, upgrade technology, and develop high-efficiency, high-value-added products. The market competitiveness of traditional polyester fibers has obviously weakened, and product profit margins have shrunk, so it is imperative to take the path of product differentiation.

[0003] Diamond yarn is a kind of glossy flat polyester drawn yarn. Due to its unique cross-sectional structure, its glossiness is better than that of conventional glossy FDY. It is often used for blending or coating with other fibers. The finished fabric has the characteristics of lightness, moisture absorption and perspiration, soft touch, and novel style. In addition, the surface of the fabric will present a star-shaped style. It is often used for window screens, bath screens, wedding dresses, etc. It is deeply sought after by young consumers and has broad development prospects and good economic benefits. However, the current diamond yarn is generally produced by a multi-step method, with many production steps and a long process. The probability of abnormal yarn appearing in the production process is high, and the quality stability of the product is relatively low. Therefore, a new production method is needed to solve the problem of high quality control difficulty caused by poor production technology of existing diamond yarn. Summary of the invention

[0004] In order to solve one or some technical problems existing in the prior art, the purpose of this application is to provide a production method of polyester drawn diamond wire, which can solve the problems of complex production process and uneven coloring of existing diamond wire, and the fiber has good refractive and flash effects.

[0005] In order to solve the above existing technical problems, this application adopts the following technical solutions:

[0006] A method for producing polyester drawn diamond yarn, characterized in that it comprises a spinning box, a spinning metering pump, a spinning assembly, a spinning chamber, a spinning tunnel, a tanker device, a wire guide hook, a wire guide rod, a wire dividing rod, a pre-network, an SR1 wire dividing roller, a GR1 hot roller, a GR2 hot roller, an SR2 wire dividing roller, a wire guide hook, a main network and a TMT winding machine, wherein the inlet and outlet of the pre-network and the main network are both provided with a row of the wire guide hooks, a wire dividing rod is further provided between the SR1 wire dividing roller and the pre-network, and the spinneret holes on the spinning assembly A straight hole is used, and the length and width ratio of the straight hole is 120:6-7; the polyester drawn diamond yarn is formed by reacting two raw materials, PTA and EG, through a polymerization device to form a polyester melt, and the polyester melt is injected into the spinning metering pump on the spinning box through a melt pipe, and then the yarn is discharged through the spinning assembly, the spinning chamber is cooled and shaped, the tanker device is oiled, and the SR1 filament roller, GR1 hot roller, GR2 hot roller and SR2 filament roller are combined for heating, stretching and shaping, and then wound up by the TMT winding machine.

[0007] Preferably, the temperature of the GR1 hot roller is 98±0.5°C, and the temperature of the GR2 hot roller is 130±0.5°C.

[0008] Preferably, the GR1 heat roller and the GR2 heat roller are arranged at an inclination, the inclination angle of the GR1 heat roller and the GR2 heat roller is 3-5 degrees, and the number of fiber windings on each of the heat rollers is 9.5 turns.

[0009] Preferably, the wind speed in the spinning chamber is 0.70±0.02 m / s.

[0010] Preferably, the height of the windless zone on the spinning chamber is 12 cm.

[0011] Preferably, the spinning tunnel is provided with a side-blowing small mesh plate connected to the spinning chamber, and the air supply duct of the side-blowing small mesh plate is an air supply duct controlled by an independent regulating valve. After the filament bundle passing through the spinning assembly is cooled by side-blowing through the vertical mesh on the spinning chamber, it continues to be cooled by side-blowing through the side-blowing small mesh plate.

[0012] Preferably, the wind speed of the side-blowing small mesh plate is 0.50±0.02m / s.

[0013] Preferably, two sets of the oil tanker devices are provided below the spinning tunnel, and the oil tanker devices use TK-1259ZS oil agent, and the TK-1259ZS oil agent is added with an antistatic agent.

[0014] Preferably, the melt pipe temperature is 285°C, the spinning box temperature is 290±0.3°C,

[0015] Preferably, the metering deviation of the spinning metering pump is 0.2%, and the metering is accurate and stable.

[0016] Preferably, the pre-network pressure is 0.08 MPa.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The spinneret holes on the spinning assembly are straight-shaped holes. The diamond filaments formed by the straight-shaped holes have a flat cross-section structure. The surface of the flat cross-section fiber is relatively smoother, which helps the light to be reflected directionally on its surface instead of diffusely. More light is reflected in the same direction, giving the fiber a unique flash effect.

[0019] 2. The length and width ratio of the straight hole is 120:6~7, which can avoid the phenomenon of excessive breakage caused by injection head wire during the production process, making the production more stable, the fiber fineness more uniform, and the fiber cross-sectional shape more prominent. The refraction and flashing effects of the fiber are better, meeting the use requirements of the downstream customers; after weaving, the warp yarn and the weft yarn are intertwined, and the arrangement order of the flat cross section of each bundle of yarn will become irregular. The fibers are staggered to form intersections. When the light shines on these intersections, the surface of the fabric presents a unique bright spot, like a diamond-like luster, which embellishes the fabric.

[0020] 3. Oiling with a tanker device is used instead of oiling with an oil nozzle. The crude oil rack is removed, so that the tow remains in its original state and is cooled by side-blowing air, and the cooling effect is optimal. The oiling with a tanker is completed in the winding section, which will not affect the cooling effect of spinning. Oiling is carried out with a tanker device and the position is adjusted to the outlet end of the spinning tunnel, so that the spinning chamber between the spinning assembly and the spinning tunnel only plays the role of side-blowing cooling and shaping, and the uniformity is better when oiling, which is better for the later dyeing uniformity.

[0021] 4. A mixed structure of two hot rollers and two wire-separating rollers is used between the tanker device and the TMT winder for stretching and shaping, and the two hot rollers are arranged in sequence. The hot roller and the wire-separating roller respectively play the role of heating, stretching and separating the tows in FDY production. Among them, the hot roller is mainly used to heat and stretch the pre-oriented nascent fibers to achieve a fully drawn state. The wire-separating roller plays an auxiliary role, mainly used to separate the tows so that the subsequent stretching and winding processes can proceed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a process flow chart of the present invention;

[0023] Figure 2 Schematic diagram of the spinneret hole in the present invention;

[0024] In the figure: 1. Wire guide hook; 2. GR1 hot roller; 3. SR1 wire separation roller; 4. Pre-network; 5. Spinning tunnel; 6. Air supply duct controlled by regulating valve; 7. Spinning box; 8. Polymerization device; 9. Melt pipeline; 10. Spinning metering pump; 11. Spinning assembly; 12. Windless area; 13. Spinning room; 14. Side blowing small mesh plate; 15. Tanker device; 16. Wire guide rod; 17. Wire separation rod; 18. GR2 hot roller; 19. SR2 wire separation roller; 20. Main network; 2 1. TMT winder; 22. Spinneret hole. DETAILED DESCRIPTION

[0025] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0026] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0027] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0028] like Figure 1 and Figure 2As shown, a method for producing polyester drawn diamond yarn comprises a spinning box 7, a spinning metering pump 10, a spinning assembly 11, a spinning chamber 13, a spinning tunnel 5, a tanker device 15, a wire guide hook 1, a wire guide rod 16, a wire dividing rod 17, a pre-network 4, an SR1 wire dividing roller 3, a GR1 hot roller 2, a GR2 hot roller 18, an SR2 wire dividing roller 19, a wire guide hook 1, a main network 20 and a TMT winding machine 21, wherein the inlet and outlet of the pre-network 4 and the main network 20 are both provided with a row of the wire guide hooks 1, a wire dividing rod 17 is further provided between the SR1 wire dividing roller 3 and the pre-network 4, and the spinning assembly The spinneret hole 22 on 11 is a straight hole, and the length and width ratio of the straight hole is 120:6~7; the polyester drawn diamond yarn is formed by reacting two kinds of raw materials PTA and EG through a polymerization device 8 to form a polyester melt, and the polyester melt is injected into the spinning metering pump 10 on the spinning box 7 through a melt pipe 9, and then the yarn is discharged through the spinning assembly 11, the spinning chamber 13 is cooled and shaped, the oil tanker device 15 is oiled, and the SR1 dividing roller 3, GR1 hot roller 2, GR2 hot roller 18 and SR2 dividing roller 19 are combined for heating, stretching and shaping, and then wound up by the TMT winder 21.

[0029] The polyester drawn diamond yarn produced by the above production method is FDY large shiny flat 90dtex / 12f. The product is mainly realized by the shape of the spinneret hole 22. Conventional shiny FDY fiber generally adopts a triangular shaped cross section. The triangular fiber has a small prism-like light splitting effect, which can make natural light split and then recombine. The reflection intensity of its surface changes with the direction of the incident light, which enhances the gloss of the fiber to a certain extent. However, the surface smoothness of the fiber with a triangular shaped cross section is relatively poor. What is formed by the light irradiation on its surface is diffuse reflection, resulting in more light scattering inside and on the surface, and it is impossible to make more light directly reflected, thereby resulting in insufficient flash effect of the fiber. Therefore, according to the unique characteristics of diamond yarn, the spinneret hole 22 on the spinning assembly 11 adopts a straight hole, and the diamond yarn formed by the straight hole has a straight flat cross-section structure. The surface of the straight flat cross-section fiber is relatively smoother, which helps the light to be directional reflected on its surface, rather than diffusely reflected. The light scattering inside and on the surface is reduced, which means that more light can be directly reflected, rather than being scattered in all directions. Directional reflection allows more light to be reflected in the same direction, giving the fiber a unique flash effect. At the same time, the length and width of the cross section of the wire hole were studied and tested. The flatness of the fiber, the spinneret speed, and the spinneret stretching ratio vary greatly with different length-to-width ratios. After many tests and comparisons, when the length and width ratio of the straight hole is 120:6-7, it can avoid the phenomenon of excessive breakage caused by the injection head wire during the production process, making the production more stable, the fiber fineness more uniform, and the fiber cross-sectional shape more prominent. The refraction and flash effects of the fiber are better, meeting the use requirements of downstream customers. Among them, the aperture of the spinneret hole 22 is designed to be 0.14mm*2.4mm, the number of holes is 12 holes, and it is arranged in a circular shape to form a ring, which can meet the production requirements of the unique characteristics of diamond wire. The circular arrangement can avoid the disadvantages of the staggered multi-layer arrangement, thereby improving the cooling effect of the fiber and solving the problem of insufficient cooling due to the coarse fineness of the single fiber. A row of wire guide hooks 1 are installed at the inlet and outlet of the pre-network 4 and the main network 20, which can make each wire bundle have better tension and stable trajectory during networking. At the same time, a wire separation rod 17 is also provided between the SR1 wire separation roller 3 and the pre-network 4, and the wire separation rod 17 can make the wire bundle output from the wire guide hook 1 better wound on the GR1 hot roller 2. After weaving, the warp yarn and the weft yarn are intertwined, and the arrangement order of the flat cross section of each bundle of silk will become irregular. The fibers are staggered to form intersections. When light shines on these intersections, the surface of the fabric presents a unique bright spot, like a diamond-like luster, which embellishes the fabric.

[0030] When producing polyester drawn diamond yarn, compared with conventional polyester drawn yarn, the equipment was modified. Among them, because the product has high requirements for dyeing, the original yarn bundle is oiled by the oil nozzle, and the oil rack is designed in front of the tunnel. After 12 monofilaments enter the same oil nozzle for oiling, they are bundled, which may cause uneven oiling between the monofilaments. Therefore, the oiling method of the yarn bundle is changed, and the oil tanker device 15 is used for oiling instead of the oil nozzle. The oil rack was removed, so that the yarn bundle remains in its original state and is cooled by side blowing air, and the cooling effect is best. The oiling of the oil tanker is completed in the winding section. It will not affect the cooling effect of spinning. The oil tanker device 15 is used for oiling and the position is adjusted to the outlet end of the spinning tunnel 5, so that the spinning chamber 13 between the spinning assembly 11 and the spinning tunnel 5 only plays the role of side blowing cooling and shaping, and the uniformity is better during oiling, which is better for later dyeing. At the same time, a wire guide hook 1, a wire guide rod 16, a wire separation rod 17, a pre-network 4, an SR1 wire separation roller 3, a GR1 hot roller 2, a GR2 hot roller 18, an SR2 wire separation roller 19 and a wire guide hook 1 are installed in sequence between the tanker device 15 and the TMT winding machine 21, so that the polyester drawn diamond wire can be produced through a one-step stretching production process. Since FDY needs to be stretched and shaped with a hot roller immediately after spinning, a hot roller stretching process is generally adopted. The original hot roller stretching process used a production process of stretching with four hot rollers, but the energy consumption was relatively high. Therefore, the improved process uses a mixed structure of two hot rollers and two wire separation rollers for stretching and shaping, and the two hot rollers are arranged in sequence. The hot roller and the wire separation roller respectively bear the role of heating and stretching and separating the filament bundles in the production of FDY. Among them, the hot roller is mainly used to heat and stretch the pre-oriented primary fiber to achieve a fully stretched state. The wire separation roller plays an auxiliary role, mainly used to separate the wire bundles so that the subsequent stretching and winding processes can proceed smoothly.

[0031] As a further improvement, the temperature of the GR1 heat roller 2 is 98±0.5°C, and the temperature of the GR2 heat roller 18 is 130±0.5°C.

[0032] Before the improvement, the temperature of the first two hot rollers in the equipment was generally around 93°C, while the temperature of the last two was generally around 125°C. However, after the improvement, it was found that when the temperature remained unchanged, the molded fibers had large shrinkage deviations and the presence of beef tendon threads, resulting in poor dyeing effects in the later stages. Therefore, the temperature of the GR1 hot roller 2 was adjusted. When its temperature was around 98°C, the frequency of beef tendon threads could be reduced. When the temperature of the GR2 hot roller 18 was adjusted to around 130°C, not only was the molding effect significantly improved, the shrinkage was controlled, and the probability of the appearance of beef tendon threads was further controlled.

[0033] A further improvement is that the GR1 heat roller 2 and the GR2 heat roller 18 are arranged at an inclination, the inclination angle of the GR1 heat roller 2 and the GR2 heat roller 18 is 3 to 5 degrees, and the number of fiber windings on each heat roller is 9.5 turns.

[0034] Since the single-filament fineness of this product is relatively large, the conventional hot roller is set horizontally, and the number of turns is 7.5 turns. In the production of polyester drawn diamond yarn, insufficient stretching is prone to occur, resulting in the appearance of cow tendon yarn and affecting the dyeing performance when it is prepared into fabrics in the later stage. In order to ensure that each fiber can be fully stretched, the GR1 hot roller 2 and the GR2 hot roller 18 are tilted 3 to 5 degrees toward the direction of the wire separation roller, so that the number of fiber turns on each hot roller can be increased by 2 turns to 9.5 turns, making the fiber heating and stretching more uniform, enhancing the shaping effect, and helping to improve the dyeing performance of the fiber fabric.

[0035] Further improvement is that the wind speed of the spinning chamber 13 is 0.70±0.02 m / s; the height of the windless zone 12 on the spinning chamber 13 is 12 cm.

[0036] Cooling forming conditions are one of the important conditions that affect the spinning state and the quality indicators of finished products. The structural properties of flat yarn FDY are particularly sensitive to cooling conditions. Once the fiber is cooled unevenly during the side-blowing cooling process, it will cause color difference in dyeing. If the wind speed is too high, it will cause fiber vibration and fluttering, resulting in an increase in broken ends; if the wind speed is too low, the fiber coagulation speed will slow down, which is easy to cause beef tendon. When the wind speed is 0.70±0.02m / s, it can avoid the problem of increased broken ends caused by fiber vibration and fluttering due to excessive wind speed; it can also avoid the problem of beef tendon caused by too low wind speed. The physical indicators of the product are optimal, cooling is improved, and the fiber cross-section is stable. The stability of production is guaranteed, and the physical indicators of the product are optimal.

[0037] The windless zone 12 is also called a sealing zone. The purpose of setting up this zone is to prevent the melt from cooling down rapidly after it leaves the spinneret hole 22. At present, the height of the windless zone 12 of the spinning chamber 13 is fixed at 10CM. When producing diamond wire, it is found that the crystallization speed is too fast, resulting in uneven fiber orientation. Therefore, the structure of the spinning chamber 13 is adjusted, and the height of the windless zone 12 is adjusted to 12CM, which prolongs the fiber crystallization time, makes the fiber orientation more uniform, and greatly improves the strength index of the product at the same spinning speed.

[0038] A further improvement is that the spinning tunnel 5 is provided with a side-blowing mesh plate 14 connected to the spinning chamber 13, and the air supply duct of the side-blowing mesh plate 14 is an air supply duct 6 controlled by an independent regulating valve. After the filament bundles ejected from the spinning assembly 11 are cooled by side-blowing of the vertical mesh on the spinning chamber 13, they continue to be cooled by side-blowing by passing through the side-blowing mesh plate 14.

[0039] Cooling forming conditions are one of the important conditions that affect the spinning state and the quality index of the finished product. The structural properties of flat yarn FDY are particularly sensitive to cooling conditions. Once the fiber is cooled unevenly during the side-blowing cooling process, it will cause color difference in dyeing. Before the improvement, the original cooling method could not achieve the best cooling effect due to the large single-filament fineness of the product, resulting in uneven dyeing and other problems. After the diamond yarn was produced, the fabric surface showed uneven dyeing and color stripes after processing by downstream customers. In order to achieve uniform cooling of the yarn bundle and ensure uniform dyeing in the subsequent process, the structure of the spinning tunnel 5 is redesigned in combination with the characteristic of the product having a relatively large single yarn fineness. A side-blowing small mesh plate 14 with a length of 118 cm, a width of 8 cm and a height of 80 cm is installed below the vertical mesh of the spinning chamber 13 on the spinning tunnel 5. The air supply duct of the side-blowing small mesh plate 14 is an air supply duct 6 controlled by an independent regulating valve, and is connected to the air supply duct main pipe of the spinning chamber 13. After the yarn bundle passing through the spinning assembly 11 is cooled by side-blowing of the vertical mesh on the spinning chamber 13, it is further cooled by side-blowing through the side-blowing small mesh plate 14, so that the yarn bundle is cooled for a longer period of time, the cooling effect is doubled, the yarn bundle is cooled more evenly, and the problem of uneven strands caused by inadequate fiber cooling is avoided. The problem of uneven dyeing is greatly improved, the intrinsic quality of the product is improved, and it is ensured that there is no abnormality in dyeing at the customer's place, which is recognized by the customer and improves customer satisfaction.

[0040] Because a small mesh plate with a length of 118cm, a width of 8cm, and a height of 80cm was designed and installed below the vertical net in the spinning chamber 13, the original space of the spinning chamber became narrower. In addition, the oiling method was changed, and the tow was easily rubbed when passing through the spinning chamber and the tunnel, causing broken ends. In order to solve this problem, a 10cm*3cm*200cm iron plate was installed on both sides of the original spinning chamber 13, and then the bottom of the spinning chamber was widened and transformed, and the bottom area was transformed from the original 122cm*30cm design to 122cm*42cm, that is, the floor slab of the second floor was widened by cutting construction, and the tunnel connected to the spinning chamber was widened after widening, ensuring that the tow had enough space when passing through the spinning chamber 13 and the spinning tunnel 5, and would not be affected by the cooling wind and rubbed against the spinning chamber 13 and the spinning tunnel 5. It eliminates the possibility of producing lint and broken ends, ensures the physical indicators of the fiber, and improves the intrinsic quality of the product.

[0041] A further improvement is that the wind speed of the side-blowing small mesh plate 14 is 0.50±0.02m / s.

[0042] When the side-blowing air mesh plate 14 shares the air supply channel with the spinning chamber 13, it is found that the tow has the problem of excessive cooling, which easily leads to the problem of increased breakage at the hot roller stretching position. Therefore, when controlling the wind speed of the side-blowing air mesh plate 14, in order to avoid the problem of excessive cooling caused by the wind speed being directly consistent with the wind speed of the spinning chamber 13, the wind speed is adjusted by adjusting the valve to be lower than the wind speed of the spinning chamber 13. When the wind speed of the side-blowing air mesh plate 14 is 0.50±0.02m / s, the problem of increased breakage rate due to excessive cooling can be avoided.

[0043] A further improvement is that two sets of the oil tanker devices 15 are provided below the spinning tunnel 5, and the oil tanker devices 15 use TK-1259ZS oil agent, and the TK-1259ZS oil agent is added with an antistatic agent.

[0044] At first, a set of oil tanker device 15 was installed under the spinning tunnel 5, but the research found that after the one-stage oiling technology was adopted, the oil agent could not penetrate into the fiber, and the "skin-core silk" phenomenon was likely to occur, resulting in strips of colored silk on the cloth surface, resulting in poor coloring effect in the later stage. Therefore, an additional set of oil tanker device 15 was installed under the oil tanker device 15. The use of the two-stage oil tanker device 15 for oiling can form an oil film on the surface of the tow after the first oil tanker, which has a certain cooling effect on the surface of the tow. After passing through the second oil tanker, the oil agent further penetrates into the fiber, so that the fiber is cooled again and each fiber is oiled more evenly, thereby improving the intrinsic quality of the product. Because the later stage has high requirements for the softness and dyeability of the product, the oil agent of model TK-1259AA produced by Henglong Company cannot meet the various functional requirements of the fiber, so TK-1259ZS oil agent was used. Antistatic ingredients are added to the oil agent to eliminate static electricity, reduce fiber damage, and enhance the antistatic performance of the fiber. After using TK-1259ZS special oil, on-site production is more stable and the intrinsic quality of the product is further improved. The fiber's softness, dyeing performance, and antistatic performance are also optimized. The product meets customer requirements and customer satisfaction is high.

[0045] Further improvement is that the temperature of the melt pipe 9 is 285°C, the box temperature is 290±0.3°C,

[0046] The spinning temperature has a great influence on the flatness of the product. Generally, the flatness decreases with the increase of the spinning temperature. When the temperature of the melt pipe 9 is 285°C and the temperature of the spinning box 7 is 290±0.3°C, it is the best spinning temperature. The melt viscosity at this temperature is 0.615dl / g, the resistance to the melt flow deviating from the shape of the spinneret hole 22 is minimal, and the fiber cross-sectional shape is optimal.

[0047] Further improvement is that the metering deviation of the spinning metering pump 10 is 0.2%; the pressure of the pre-network 4 is 0.08Mpa. Accurate metering and stable delivery; increase the uniformity of oiling of the tow, make the fiber oiling more uniform, and the tow is initially cohesive.

[0048] The "diamond silk" produced by the invention method has stable quality. After weaving, the product has a unique craftsmanship. Its unique flat characteristics make the surface of the fabric after dyeing and finishing present a brilliant luster like diamond, with good refraction and flashing effects. The fabric not only has the functions of stretching freely and wearing comfort, but also has the advantages of bright color and soft feel. It is mainly used as a fabric for women's spring and summer clothes. It is an ideal fabric for spring and summer fashion. It can also be used as shawls, window screens, bath gauze, wedding dresses and various decorative fabrics, etc. The product has become a new fashion fabric in the chemical fiber market with its wide range of uses, good quality and low price.

[0049] The above-mentioned implementation modes are only preferred implementation modes of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present application shall fall within the scope of protection required by the present application.

Claims

1. A method for producing polyester drawn diamond yarn, characterized in that: The invention comprises a spinning box (7), a spinning metering pump (10), a spinning assembly (11), a spinning chamber (13), a spinning tunnel (5), a tanker device (15), a wire guide hook (1), a wire guide rod (16), a wire separation rod (17), a pre-network (4), an SR1 wire separation roller (3), a GR1 hot roller (2), a GR2 hot roller (18), an SR2 wire separation roller (19), a wire guide hook (1), a main network (20) and a TMT winding machine (2 1), the inlet and outlet of the pre-network (4) and the main network (20) are both provided with a row of the guide hooks (1), a wire separation rod (17) is further provided between the SR1 wire separation roller (3) and the pre-network (4), the spinneret holes (22) on the spinning assembly (11) are straight-line holes, and the length and width ratio of the straight-line holes is 120:6-7; the polyester drawn diamond yarn is obtained by reacting two raw materials, PTA and EG, through a polymerization device (8) A polyester melt is formed, which is injected into the spinning metering pump (10) on the spinning manifold (7) through the melt pipe (9), and then filaments are produced through the spinning assembly (11). The spinning chamber (13) is cooled and shaped, the oil tanker device (15) is oiled, and the SR1 filament separator roller (3), GR1 hot roller (2), GR2 hot roller (18) and SR2 filament separator roller (19) are combined for heating, stretching and shaping, and then the filaments are wound up through the TMT winder (21).

2. The method for producing a polyester drawn diamond wire according to claim 1, characterized in that: The temperature of the GR1 hot roller (2) is 98±0.5°C, and the temperature of the GR2 hot roller (18) is 130±0.5°C.

3. The method for producing a polyester drawn diamond wire according to claim 1, characterized in that: The GR1 hot roller (2) and the GR2 hot roller (18) are arranged in an inclined manner, the inclination angle of the GR1 hot roller (2) and the GR2 hot roller (18) is 3 to 5 degrees, and the number of fiber windings on each hot roller is 9.5 turns.

4. The method for producing a polyester drawn diamond wire according to claim 1, characterized in that: The wind speed in the spinning chamber (13) is 0.70±0.02 m / s.

5. The method for producing a polyester drawn diamond wire according to claim 4, characterized in that: The height of the windless zone (12) on the spinning chamber (13) is 12 cm.

6. The method for producing polyester drawn diamond wire according to claim 5, characterized in that: The spinning tunnel (5) is provided with a side-blowing mesh plate (14) connected to the spinning chamber (13); the air supply duct of the side-blowing mesh plate (14) is an air supply duct (6) controlled by an independent regulating valve; after the filament bundle passing through the spinning assembly (11) is cooled by side-blowing of the vertical mesh on the spinning chamber (13), it passes through the side-blowing mesh plate (14) to continue side-blowing cooling.

7. The method for producing polyester drawn diamond wire according to claim 6, characterized in that: The wind speed of the side-blowing small mesh plate (14) is 0.50±0.02 m / s.

8. The method for producing polyester drawn diamond wire according to claim 1, characterized in that: Two sets of the oil tanker devices (15) are arranged below the spinning tunnel (5). The oil tanker devices (15) use TK-1259ZS oil agent, and the TK-1259ZS oil agent is added with an antistatic agent.

9. The method for producing polyester drawn diamond wire according to claim 1, characterized in that: The temperature of the melt pipe (9) is 285°C, and the temperature of the spinning manifold (7) is 290±0.3°C.

10. The method for producing polyester drawn diamond wire according to claim 1, characterized in that: The pressure of the pre-network (4) is 0.08 MPa.

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