WO2025201417A1 - 一种转向装置、闪蒸纺丝设备及其纺丝方法 - Google Patents

一种转向装置、闪蒸纺丝设备及其纺丝方法

Info

Publication number
WO2025201417A1
WO2025201417A1 PCT/CN2025/085079 CN2025085079W WO2025201417A1 WO 2025201417 A1 WO2025201417 A1 WO 2025201417A1 CN 2025085079 W CN2025085079 W CN 2025085079W WO 2025201417 A1 WO2025201417 A1 WO 2025201417A1
Authority
WO
WIPO (PCT)
Prior art keywords
curved surface
curvature radius
steering
plate
flash
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
PCT/CN2025/085079
Other languages
English (en)
French (fr)
Inventor
李振华
杨友强
程博闻
舒登坤
魏金刚
赵春玉
丁超
陈平绪
丁敏
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.)
Kingfa Science and Technology Co Ltd
Tianjin University of Science and Technology
Guangdong Kingfa Science and Technology Co Ltd
Original Assignee
Kingfa Science and Technology Co Ltd
Tianjin University of Science and Technology
Guangdong Kingfa Science and Technology 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 Kingfa Science and Technology Co Ltd, Tianjin University of Science and Technology, Guangdong Kingfa Science and Technology Co Ltd filed Critical Kingfa Science and Technology Co Ltd
Publication of WO2025201417A1 publication Critical patent/WO2025201417A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/11—Flash-spinning
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/724—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged forming webs during fibre formation, e.g. flash-spinning

Definitions

  • the present invention relates to the technical field of flash spinning, in particular to a steering device, flash spinning equipment and a spinning method thereof.
  • High-pressure flash jet spinning is an important technology for preparing high-performance fibers and non-woven materials.
  • two methods can be used for fiber formation: vertical jetting and horizontal jetting. Due to the effect of high pressure, when using vertical jetting, the fiber movement speed is too fast and the fibers cannot be effectively dispersed.
  • the high-pressure flash jet mesh nano-micro fiber bundles cannot be evenly meshed, which will greatly reduce the performance of high-pressure flash jet nano-micro fiber non-woven materials. Therefore, in actual production and experiments, horizontal jetting is mainly used for fiber formation, which requires a steering device to change the direction of fiber movement. After the steering device is used, the fiber movement speed can be greatly reduced, and the fibers can be initially dispersed, so that the fibers can be evenly laid in the subsequent process.
  • Patent No. CN114232212A discloses a flash spinning device based on a multidimensional steering plate and a spinning method thereof, which includes a housing, a conveyor, and a multidimensional steering plate.
  • the multidimensional steering plate is provided with N multidimensional steering plates, which are arranged between the spinneret and the conveyor and alternately arranged on both sides from top to bottom.
  • the flash spinning device uses N multidimensional steering plates to steer the fibers, relying entirely on the direct collision of the high-pressure flash-sprayed polymer jet with the steering device to achieve fiber guidance and dispersion.
  • the fibers will accumulate in the contact area with the multidimensional steering plate and cannot spread freely during subsequent web formation. Therefore, the fibers cannot be evenly webbed, which also has a significant impact on the performance of the high-pressure flash-sprayed nano-microfiber nonwoven material.
  • the present invention provides a steering device, a flash spinning device and a spinning method thereof.
  • inventions of the present application provide a steering device for steering fibers ejected from a flash spinner.
  • the steering device includes a guide plate and a steering plate.
  • the guide plate is disposed on one side of the flash spinneret nozzle, and the guide plate is horizontally spaced a certain distance from the flash spinneret.
  • the steering plate is located on a side of the guide plate away from the flash spinneret, and is used to steer the fibers ejected from the guide plate.
  • the side of the deflector plate facing the guide plate is provided with an arc-shaped deflector surface, and the deflector surface is bent toward the guide plate;
  • the top surface of the guide plate is formed with a guide surface, and the guide surface includes N curved surfaces connected in sequence, and the curvature radius and curvature of the N curved surfaces gradually decrease in a direction approaching the deflection plate; N is a natural number greater than or equal to 1;
  • the curvature radius of the curved surface closest to the steering plate is the same as the curvature radius of the steering surface.
  • the guide surface is a circular arc surface
  • R0 is the curvature radius of the steering surface
  • R1 is the curvature radius of the arc surface
  • the radius of curvature of the arc surface is between 3 cm and 15 cm, and the distance between the two ends of the guide plate in the horizontal direction is between 5 cm and 20 cm.
  • R1 is the curvature radius of the first curved surface
  • R0 is the curvature radius of the turning surface
  • R2 is the curvature radius of the second curved surface.
  • the curvature radius of the first curved surface is between 3 cm and 15 cm, and the curvature radius of the second curved surface is between 5 cm and 20 cm.
  • the distance between the two ends of the guide plate in the horizontal direction is between 5 cm and 20 cm, and the height of the end of the guide plate away from the deflector plate in the vertical direction is between 3 cm and 10 cm.
  • R0 is the curvature radius of the steering surface
  • R1 is the curvature radius of the first curved surface
  • R2 is the curvature radius of the second curved surface
  • R3 is the curvature radius of the third curved surface
  • K0 is the curvature of the steering surface.
  • the curvature radius of the first curved surface is between 3 cm and 15 cm
  • the curvature radius of the second curved surface is between 4 cm and 16 cm
  • the curvature radius of the third curved surface is between 5 cm and 20 cm.
  • the present application also provides a flash spinning device, comprising a flash spinneret, a transfer device and the steering device described in the first aspect, wherein the steering device is arranged on one side of the nozzle of the flash spinneret, and the transfer device is arranged below the steering device for collecting the diverted fibers.
  • the spinning solution is ejected from the nozzle of the flash spinneret, the solvent of the spinning solution evaporates instantly, and the polymer of the spinning solution quickly cools and solidifies to form a fiber bundle;
  • the fiber bundle falls onto the guide surface of the guide plate, moves along the guide surface and is dispersed;
  • the fiber bundle guided by the guide plate contacts the turning surface of the turning plate, so that the dispersed fiber bundle is turned to the transfer device for collection.
  • the fiber bundles falling on the guide surface can be gradually dispersed according to the different curvature settings of the curved surface, which can effectively avoid the accumulation of fiber bundles at the place where they contact the guide surface, resulting in the problem of subsequent inability to form a uniform web;
  • a deflection plate is provided on the side of the guide plate away from the flash spinner, and a deflection surface is provided on the deflection plate that is arc-shaped and curved toward the guide plate, so that the scattered fiber bundles can be deflected.
  • FIG1 is a schematic structural diagram of a steering device of the present application.
  • FIG2 is a schematic structural diagram of a steering device embodiment 1 of the present application.
  • FIG3 is a schematic structural diagram of a steering device embodiment 1 of the present application from another perspective;
  • FIG4 is a schematic structural diagram of a steering device embodiment 2 of the present application.
  • FIG5 is a schematic structural diagram of a steering device embodiment 2 of the present application from another perspective
  • FIG6 is a schematic structural diagram of a steering device embodiment 3 of the present application.
  • FIG7 is a structural diagram of a steering device embodiment 3 of the present application from another perspective.
  • guide plate 11. guide surface; 11a. arc surface; 11b. first curved surface; 11c. Second curved surface; 11d, third curved surface; 20, turning plate; 21, turning surface; 30, fiber bundle; 40, flash spinneret; 41, nozzle.
  • the deflecting surface on the deflecting plate 20 deflects and collects the dispersed fiber bundle 30.
  • the speed of the airflow carrying the fiber bundle toward the guide plate can be 5500 m/min, so that the fiber bundle falling on the guide surface can be dispersed step by step.
  • the guide surface 11 in this embodiment is composed of N curved surfaces connected in sequence. This effectively ensures that the fiber bundles 30 that fall onto the guide surface 11 are dispersed step by step, resulting in greater uniformity.
  • the radius of curvature of the curved surface closest to the deflector plate 20 is set to be the same as the radius of curvature of the deflector surface 21 of the deflector plate 20. This ensures that the dispersed fiber bundles that fall onto the guide surface 11 are more easily guided and prevent accumulation.
  • the above-mentioned spinning solution is a spinning fluid made by mixing polymer, solvent and air flow medium in a certain proportion; wherein the solvent can be one of dichloromethane, n-pentane and cyclohexane, and the air flow medium can be one of nitrogen, carbon dioxide, helium and argon.
  • the solvent can be one of dichloromethane, n-pentane and cyclohexane
  • the air flow medium can be one of nitrogen, carbon dioxide, helium and argon.
  • the roughness of the steering plate and the curved surface closest to the steering plate is tested based on the test standard of GB/T 1031-2009.
  • the GB/T 1031-2009 standard for roughness in the existing technology can be referred to, and no limitation is imposed on this.
  • the steering device based on the above technical features is provided with a guide plate 10 on one side of the nozzle 41 of the flash spinner, and a guide surface 11 formed by N curved surfaces connected in sequence is formed on the top surface of the guide plate 10, so that the fiber bundles 30 falling on the guide surface 11 can be gradually dispersed according to the different curvature settings of the curved surface, which can effectively avoid the fiber bundles 30 from accumulating at the place where they contact the guide surface 11, resulting in the problem of subsequent inability to form a uniform web;
  • a steering plate 20 is provided on the side of the guide plate 10 away from the flash spinneret 40, and a steering surface 21 is provided on the steering plate 20 that is arc-shaped and curved toward the guide plate 10, so that the scattered fiber bundles can be diverted.
  • the guide surface 11 is a circular arc surface 11 a
  • R 0 is the curvature radius of the turning surface 21
  • R 1 is the curvature radius of the arc surface 11 a .
  • the radius of curvature of the arc surface 11 a is between 3 cm and 15 cm, and the distance between the two ends of the guide plate 10 in the horizontal direction is between 5 cm and 20 cm.
  • Polyethylene, dichloromethane, and carbon dioxide are mixed in a certain proportion to form a spinning solution.
  • the temperature in the high-temperature and high-pressure reactor is raised to 180°C and the pressure is raised to 8 MPa.
  • the spinning solution is then ejected from a flash spinneret 40.
  • the flash solvent of the spinning solution separates from the polyethylene to form a fiber bundle.
  • the fiber bundle is then ejected from the nozzle 41 of the flash spinneret and, carried by the high-pressure airflow, moves to the guide surface 11 of the guide plate 10. Since the guide surface 11 is a circular curved surface 11a, the fiber bundle is gradually dispersed along the circular curved surface 11a, thereby improving the uniformity of the fiber bundle 30.
  • a deflector plate 20 is provided on the side of the guide plate 10 away from the flash spinner, and the curvature radius of the deflector surface 21 on the deflector plate 20 is set to the same as the curvature radius of the circular curved surface 11a. This ensures that the dispersed fiber bundle 30 can be more easily guided and does not accumulate.
  • the guide surface 11 is formed by connecting a first curved surface 11 b and a second curved surface 11 c.
  • the first curved surface 11 b is located on the side close to the deflection plate 20.
  • R1 is the curvature radius of the first curved surface 11b
  • R0 is the curvature radius of the turning surface 21
  • R2 is the curvature radius of the second curved surface 11c.
  • the curvature radius of the first curved surface 11 b is between 3 cm and 15 cm, and the curvature radius of the second curved surface 11 c is between 5 cm and 20 cm.
  • the distance between the two ends of the guide plate 10 in the horizontal direction is between 5 cm and 20 cm, and the height of the end of the guide plate 10 away from the turning plate 20 in the vertical direction is between 3 cm and 10 cm.
  • Polyethylene, dichloromethane and carbon dioxide are prepared into a spinning fluid in a certain proportion, and the temperature in the high-temperature and high-pressure reactor is made to reach 180°C and the pressure is made to reach 8 MPa, so that the flash spinneret 40 instantly foams and flashes, and forms a fiber bundle 30 after cooling and solidification, and then ejected from the nozzle 41 of the flash spinneret. Under the carrying action of the high-pressure airflow, the fiber bundle 30 moves to the guide surface 11 of the guide plate 10.
  • the guide surface 11 is formed by connecting the first curved surface 11b and the second curved surface 11c, and the first curved surface 11b is arranged on the side close to the deflecting plate 20, the fiber bundle 30 flows from the second curved surface 11c to the first curved surface 11b in sequence, thereby further allowing the fiber bundle 30 to be dispersed step by step, which can make the fiber bundle 30 more uniform.
  • a deflection plate 20 is provided on the side of the guide plate 10 away from the flash spinner, and the curvature radius of the deflection surface 21 on the deflection plate 20 is set to be the same as the curvature radius of the first curved surface 11b, which can ensure that the dispersed fiber bundles 30 can be more easily guided and will not accumulate.
  • the curvature radius of the first curved surface 11b is between 3 cm and 15 cm
  • the curvature radius of the second curved surface 11c is between 4 cm and 16 cm
  • the curvature radius of the third curved surface 11d is between 5 cm and 20 cm
  • the distance between the two ends of the guide plate 10 in the horizontal direction is between 5 cm and 20 cm
  • the height of the end of the guide plate 10 away from the turning plate 20 in the vertical direction is between 3 cm and 10 cm.
  • this embodiment is described assuming that the curvature radius of the first curved surface 11b is 3 cm, the curvature radius of the second curved surface 11c is 6 cm, the curvature radius of the third curved surface 11d is 8 cm, the distance between the two ends of the guide plate 10 in the horizontal direction is 16 cm, and the height of the end of the guide plate 10 away from the steering plate 20 in the vertical direction is 5 cm.
  • the details are as follows:
  • Polyethylene, dichloromethane and carbon dioxide are prepared into a spinning fluid in a certain proportion, and the temperature in the high-temperature and high-pressure reactor is made to reach 180°C and the pressure is made to reach 8 MPa, so that the flash spinneret 40 instantly foams and flashes, and forms a fiber bundle after cooling and solidification, and then ejected from the nozzle 41 of the flash spinneret. Under the carrying action of the high-pressure airflow, the fiber bundle moves to the guide surface of the guide plate 10.
  • the guide surface 11 is composed of the first curved surface 11b, the second curved surface 11c and the third curved surface 11d connected in sequence, and the first curved surface 11b is arranged on the side close to the deflection plate 20, and the second curved surface 11c is located between the first curved surface 11b and the third curved surface 11d, the fiber bundle 30 flows in sequence along the third curved surface 11d, the second curved surface 11c and the first curved surface 11b, thereby further allowing the fiber bundle 30 to be dispersed step by step, which can make the fiber bundle 30 more uniform.
  • a deflection plate 20 is provided on the side of the guide plate 10 away from the flash spinner, and the curvature radius of the deflection surface 21 on the deflection plate 20 is set to be the same as the curvature radius of the first curved surface 11b, which can ensure that the dispersed fiber bundles can be more easily guided and will not accumulate.
  • the present application also provides a flash spinning device, including a flash spinneret, a transfer device and a steering device of the above embodiment, wherein the steering device is arranged on one side of the nozzle of the flash spinneret, and the transfer device is arranged below the steering device for collecting the diverted fibers.
  • a flash spinneret is used for instantaneous foaming and flash evaporation, and after cooling and solidification, a fiber bundle is formed and ejected from the nozzle of the flash spinneret. Then, under the carrying action of the high-pressure airflow, the fiber bundle moves to the guide surface of the guide plate and is gradually dispersed. Finally, the steering surface on the steering plate turns the dispersed fiber bundle to the transfer device for collection, thereby making the fiber bundle more uniform and effectively avoiding the accumulation of the fiber bundle at the place where it contacts the guide surface, resulting in the problem of subsequent inability to form a uniform web.
  • the present application provides a flash spinning method using the flash spinning equipment of Example 4, comprising the following steps:
  • the spinning solution is ejected from the nozzle of the flash spinneret, the solvent of the spinning solution evaporates instantly, and the polymer of the spinning solution quickly cools and solidifies to form a fiber bundle;
  • the fiber bundle falls onto the guide surface of the guide plate, moves along the guide surface and is dispersed;
  • the fiber bundles dispersed by the guide plate come into contact with the turning surface of the turning plate, so that the dispersed fiber bundles are turned to the transfer device for collection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

公开了一种转向装置、闪蒸纺丝设备及其纺丝方法。转向装置包括导流板（10）和转向板（20），导流板（10）设于闪蒸喷丝器喷口（41）的一侧，转向板（20）在导流板（10）远离闪蒸喷丝器（40）的一侧；转向板（20）面向导流板（10）的侧面设有呈弧形的转向面（21），转向面（21）朝向导流板（10）弯曲；导流板（10）的顶面形成有导流面（11），导流面（11）包括N个曲面依次连接而成，N个曲面的曲率半径沿靠近转向板（20）的方向逐渐减小；最靠近转向板（20）的曲面的曲率半径与转向面（21）的曲率半径相同。该转向装置可以使得落在导流面上的纤维束随着曲面的不同曲率设置而能够进行逐级散开，有效地避免纤维束在与导流面接触的地方发生堆积，导致后续无法均匀成网的问题。

Description

一种转向装置、闪蒸纺丝设备及其纺丝方法 技术领域
本发明涉及闪蒸纺丝技术领域，特别是涉及一种转向装置、闪蒸纺丝设备及其纺丝方法。
背景技术
高压闪喷纺丝是制备高性能纤维及其非织造材料重要的技术，现阶段在纤维成形时，可以采取竖直喷射和水平喷射两种方式。由于受到高压的作用，在采用竖直喷射时，纤维运动速度过快，不能对纤维进行有效地分散，高压闪喷网状纳微纤维束不能均匀成网，这会大大降低高压闪喷纳微纤维非织造材料的性能。因此，在实际生产和实验中主要采取水平喷射的方式进行成纤，这需要转向装置来改变纤维的运动方向，经过转向装置的作用后能大大地降低纤维的运动速度，同时能使纤维初步分散，以便于在后续的工艺中对纤维进行均匀铺网。
专利号CN114232212A公开了一种基于多维转向板的闪蒸纺丝设备及其纺丝方法，其包括箱体、传送装置和多维转向板，多维转向板设有N个，N个多维转向板设于喷丝头和传送装置之间且呈两侧自上往下依次交替排布。该闪蒸纺丝设备采用N个多维转向板对纤维进行转向，完全依靠高压闪喷聚合物射流与转向装置进行直接碰撞实现纤维的导向与分散，但是采用这种方法对纤维的导向过程中，纤维与多维转向板发生碰撞时，纤维会在与多维转向板接触的地方发生堆积，并在后续成网时不能自由铺展，因此纤维无法均匀成网，这对高压闪喷纳微纤维非织造材料的性能也有较大的影响。
发明内容
为了解决上述技术问题，本发明提供了一种转向装置、闪蒸纺丝设备及其纺丝方法。
第一方面，本申请实施例提供一种转向装置，用于对闪蒸喷丝器喷出的纤维进行转向，该转向装置包括导流板和转向板，所述导流板设于所述闪蒸喷丝器喷口的一侧，且所述导流板与所述闪蒸喷丝器在水平方向上间隔一定的距离，所述转向板在所述导流板远离所述闪蒸喷丝器的一侧，用于对所述导流板导出的纤维进行转向；
所述转向板面向所述导流板的侧面设有呈弧形的转向面，所述转向面朝向所述导流板弯曲；
所述导流板的顶面形成有导流面，所述导流面包括N个曲面依次连接而成，N个所述曲面的曲率半径和曲率沿靠近所述转向板的方向逐渐减小；N为大于或等于1的自然数；
其中，最靠近所述转向板的所述曲面的曲率半径与所述转向面的曲率半径相同。
在一种实施方式中，最靠近所述转向板的所述曲面的粗糙度与所述转向面的粗糙度相同；
其中，所述转向面的粗糙度Ra≤0.1。
在一种实施方式中，当N等于1时，所述导流面为圆弧曲面，所述圆弧曲面的曲率半径与所述转向面的曲率半径满足以下关系：
R0＝R1
其中，R0为所述转向面的曲率半径，R1为所述圆弧曲面的曲率半径。
在一种实施方式中，所述圆弧曲面的曲率半径介于3cm～15cm之间，且所述导流板在水平方向上的两端的距离介于5cm～20cm之间。
在一种实施方式中，当N等于2时，所述导流面由第一曲面和第二曲面连接而成，所述第一曲面位于靠近所述转向板的一侧，所述第一曲面、所述第二曲面的曲率半径与所述转向面的曲率半径和满足以下关系：
R0＝R1<R2
其中，R1为所述第一曲面的曲率半径，R0为所述转向面的曲率半径，R2为所述第二曲面的曲率半径。
在一种实施方式中，所述第一曲面的曲率半径均介于3cm～15cm之间，所述第二曲面的曲率半径介于5cm～20cm之间。
在一种实施方式中，所述导流板在水平方向上的两端的距离介于5cm～20cm之间，所述导流板远离所述转向板的一端在竖直方向上的高度介于3cm～10cm之间。
在一种实施方式中，当N等于3时，所述导流面由第一曲面、第二曲面和第三曲面依次连接而成，所述第一曲面位于靠近所述转向板的一侧，所述第二曲面位于所述第一曲面和所述第三曲面之间，所述第一曲面、所述第二曲面和所述第三曲面的曲率半径与所述转向面的曲率半径满足以下关系：
R0＝R1<R2<R3
其中，R0为所述转向面的曲率半径，R1为所述第一曲面的曲率半径，R2为所述第二曲面的曲率半径，R3为所述第三曲面的曲率半径，K0为所述转向面的曲率。
在一种实施方式中，所述第一曲面的曲率半径均介于3cm～15cm之间，所述第二曲面的曲率半径介于4cm～16cm之间，所述第三曲面的曲率半径介于5cm～20之间。
第二方面，本申请还提供一种闪蒸纺丝设备，包括闪蒸喷丝器、转移装置以及第一方面所述的转向装置，所述转向装置设于闪蒸喷丝器的喷口一侧，所述转移装置设于所述转向装置的下方，用于收集转向后的纤维。
第三方面，本申请提供一种采用第二方面所述的闪蒸纺丝设备的闪蒸纺丝方法，包括以下步骤：
纺丝原液从闪蒸喷丝器的喷口喷出，纺丝原液的溶剂瞬间蒸发，纺丝原液的聚合物迅速冷却固化，形成纤维束；
所述纤维束落到所述导流板的导流面上，并沿着所述导流面进行运动且发生分散；
经所述导流板导流的纤维束与所述转向板的转向面的接触，以使得分散后的纤维束发生转向至所述转移装置上进行收集。
本申请实施例提供的上述技术方案与现有技术相比，其有益效果在于：
通过在闪蒸纺丝器的喷口一侧的导流板，并在导流板的顶面形成有由N个曲面依次连接而成的导流面，以使得落在导流面上的纤维束随着曲面的不同曲率设置而能够进行逐级散开，可以有效地避免纤维束在与导流面接触的地方发生堆积，导致后续无法均匀成网的问题；另外，在导流板远离闪蒸喷丝器的一侧设置转向板，并在转向板上设置呈弧形并朝导流板弯曲的转向面，以使得可以将散开的纤维束可以实现转向。
附图说明
图1是本申请一种转向装置的结构示意图；
图2是本申请一种转向装置实施例1的结构示意图；
图3是本申请一种转向装置实施例1的另一视角的结构示意图；
图4是本申请一种转向装置实施例2的结构示意图；
图5是本申请一种转向装置实施例2的另一视角的结构示意图；
图6是本申请一种转向装置实施例3的结构示意图；
图7是本申请一种转向装置实施例3的另一视角的结构示意图。
图中标号：
10、导流板；11、导流面；11a、圆弧曲面；11b、第一曲面；11c、
第二曲面；11d、第三曲面；20、转向板；21、转向面；30、纤维束；40、闪蒸喷丝器；41、喷口。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。以下描述中，需要理解的是，“前”、“后”、“上”、“下”、“左”、“右”、“纵”、“横”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“头”、“尾”等指示的方位或位置关系为基于附图所示的方位或位置关系、以特定的方位构造和操作，仅是为了便于描述本技术方案，而不是指示所指的装置或元件必须具有特定的方位，因此不能理解为对本发明的限制。
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。
请参照图1，本实施例提供一种转向装置，用于对闪蒸喷丝器40喷出的纤维进行转向，该转向装置包括导流板10和转向板20，导流板10设于闪蒸喷丝器喷口41的一侧，且导流板10与闪蒸喷丝器40在水平方向上间隔一定的距离，所述一定的距离范围为2-10cm，优选3-5cm，转向板20在导流板10远离闪蒸喷丝器40的一侧，用于对导流板10导出的纤维进行转向。转向板20面向导流板10的侧面设有呈弧形的转向面21，转向面21朝向导流板10弯曲。导流板10的顶面形成有导流面11，导流面11包括N个曲面依次连接而成，N个曲面的曲率半径沿靠近转向板的方向逐渐减小；N为大于或等于1的自然数。其中，最靠近转向板20的曲面的曲率半径与转向面21的曲率半径相同。
示例性地，该转向装置是起到对闪蒸喷丝器40喷出的纤维进行转向及分散的作用，即：纺丝原液进入至闪蒸喷丝器40后，溶剂瞬间发泡闪蒸，纺丝原液的聚合物冷却固化形成纤维束30，并从闪蒸喷丝器的喷口41出喷出，纤维束由高压气流携带朝导流板方向运动，以使得纤维束30落在导流板10的导流面11上，之后纤维束30沿着导流面11进行运动，并在此发生分散，再过渡至与导流板10平滑对接的转向板20上，最后由转向板20上的转向面将分散后的纤维束30转向并收集起来。其中，携带纤维束朝导流板方向运动的气流的速度可以是5500m/min，以使得落入至导流面上的纤维束能逐级分散。
示例性地，由于流体在接触曲面时会沿着曲面的表面运动，以使得流体能逐级散开。为此，本实施例中的导流面11由N个曲面依次连接而成，可以有效地确保落入至导流面11上的纤维束30能逐级散开，均匀性更好。另外，还将最靠近转向板20的一个曲面的曲率半径设置成与转向板20的转向面21的曲率半径相同，确保落入至导流面11上散开后的纤维束能更容易被导向，不会发生堆积。
示例性地，上述的纺丝原液是将聚合物、溶剂、气流介质按照一定比例所制成的喷丝流体；其中，溶剂可以为二氯甲烷、正戊烷、环己烷中的一种，气流介质可以为氮气、二氧化碳、氦气、氩气中的一种。
示例性地，由于导流面由多个曲面依次连接而成，纤维束在经过多个曲面的导向作用下会转移至转向面，为了确保纤维束在导流面向转向面更平滑地进行过渡，需要将最靠近转向板的曲面的粗糙度与转向板的粗糙度保持相一致。在本实施例中，转向板的粗糙度Ra≤0.1，需要说明的是，若转向板和最靠近转向板的曲面的粗糙度大于0.1时，则造成气流折射方向不可控，产生大量的紊流，进而影响纤维束的分丝效果。
另外，需要说明的是，转向板和最靠近转向板的曲面的粗糙度是基于GB/T 1031-2009的测试标准进行检测的，具体可以参照现有技术中粗糙度的GB/T 1031-2009标准，对此不作限定。
基于上述技术特征的转向装置，通过在闪蒸纺丝器的喷口41一侧的导流板10，并在导流板10的顶面形成有由N个曲面依次连接而成的导流面11，以使得落在导流面11上的纤维束30随着曲面的不同曲率设置而能够进行逐级散开，可以有效地避免纤维束30在与导流面11接触的地方发生堆积，导致后续无法均匀成网的问题；另外，在导流板10远离闪蒸喷丝器40的一侧设置转向板20，并在转向板20上设置呈弧形并朝导流板10弯曲的转向面21，以使得可以将散开的纤维束可以实现转向。
实施例1
请参照图2和图3，在一种实施方式中，当N等于1时，导流面11为圆弧曲面11a，圆弧曲面11a的曲率半径与转向面21的曲率半径满足以下关系：
R0＝R1
其中，R0为转向面21的曲率半径，R1为圆弧曲面11a的曲率半径。
在一种实施方式中，圆弧曲面11a的曲率半径介于3cm～15cm之间，且导流板10在水平方向上的两端的距离介于5cm～20cm之间。
为了便于说明当N为1时，转向装置对喷出的纤维束30进行导向分散的作用，本实施例以圆弧曲面11a的曲率半径为8cm，导流板在水平方向上的两端的距离为10cm进行说明，具体如下：
将聚乙烯、二氯甲烷和二氧化碳按照一定比例配制成纺丝原液，并使高温高压反应釜内温度达到180℃，压力达到8MPa，然后将纺丝原液从闪蒸喷丝器40喷出，纺丝原液闪蒸溶剂与聚乙烯相分离形成纤维束，之后从闪蒸喷丝器的喷口41喷出，并在高压气流的携带作用下纤维束运动至导流板10的导流面11上，由于导流面11呈圆弧曲面11a，以使得纤维束沿着圆弧曲面11a逐级散开，可以使得纤维束30的均匀性更好。另外，在导流板10远离闪蒸纺丝器的一侧设置转向板20，并将转向板20上的转向面21的曲率半径设置成与圆弧曲面11a的曲率半径相同，可以确保散开后的纤维束30能更容易被导向，不会发生堆积。
实施例2
请参照图4和图5，在一种实施例中，当N等于2时，导流面11由第一曲面11b和第二曲面11c连接而成，第一曲面11b位于靠近转向板20的一侧，第一曲面11b、第二曲面11c的曲率半径与转向面的曲率半径满足以下关系：
R0＝R1<R2
其中，R1为第一曲面11b的曲率半径，R0为转向面21的曲率半径，R2为第二曲面11c的曲率半径。
在一种实施方式中，第一曲面11b的曲率半径均介于3cm～15cm之间，第二曲面11c的曲率半径介于5cm～20cm之间。
在一种实施方式中，导流板10在水平方向上的两端的距离介于5cm～20cm之间，导流板10远离转向板20的一端在竖直方向上的高度介于3cm～10cm之间。
为了便于说明当N为2时，转向装置对喷出的纤维束进行导向分散的作用，本实施例以第一曲面11b的曲率半径为6cm，第二曲面11c的曲率半径为9cm，导流板10在水平方向上的两端的距离为15cm，导流板10远离转向板的一端在竖直方向上的高度为5cm进行说明，具体如下：
将聚乙烯、二氯甲烷和二氧化碳按照一定比例配制成纺丝流体，并使高温高压反应釜内温度达到180℃，压力达到8MPa，以使得闪蒸喷丝器40瞬间发泡闪蒸，待冷却固化后形成纤维束30，之后从闪蒸喷丝器的喷口41喷出，并在高压气流的携带作用下纤维束30运动至导流板10的导流面11上，由于导流面11由第一曲面11b和第二曲面11c连接而成，并且第一曲面11b设置在靠近转向板20的一侧，以使得纤维束30依次从第二曲面11c流向第一曲面11b，从而进一步让纤维束30逐级散开，可以使得纤维束30的均匀性更好。另外，在导流板10远离闪蒸纺丝器的一侧设置转向板20，并将转向板20上的转向面21的曲率半径设置成与第一曲面11b的曲率半径相同，可以确保散开后的纤维束30能更容易被导向，不会发生堆积。
实施例3
请参照图6和图7，在一种实施例中，当N等于3时，导流面由第一曲面11b、第二曲面11c和第三曲面11d依次连接而成，第一曲面11b位于靠近转向板20的一侧，第二曲面11c位于第一曲面11b和第三曲面11d之间，第一曲面11b、第二曲面11c和第三曲面11d的曲率半径与转向面的曲率半径满足以下关系：
R0＝R1<R2<R3
其中，R0为转向面21的曲率半径，R1为第一曲面11b的曲率半径，R2为第二曲面11c的曲率半径，R3为第三曲面11d的曲率半径。
在一种实施方式中，第一曲面11b的曲率半径均介于3cm～15cm之间，第二曲面11c的曲率半径介于4cm～16cm之间，第三曲面11d的曲率半径介于5cm～20之间；导流板10在水平方向上的两端的距离介于5cm～20cm之间，导流板10远离转向板20的一端在竖直方向上的高度介于3cm～10cm之间。
为了便于说明当N为3时，转向装置对喷出的纤维束30进行导向分散的作用，本实施例以第一曲面11b的曲率半径为3cm，第二曲面11c的曲率半径为6cm，第三曲面11d的曲率半径为8cm，导流板10在水平方向上的两端的距离为16cm，导流板10远离转向板20的一端在竖直方向上的高度为5cm进行说明，具体如下：
将聚乙烯、二氯甲烷和二氧化碳按照一定比例配制成纺丝流体，并使高温高压反应釜内温度达到180℃，压力达到8MPa，以使得闪蒸喷丝器40瞬间发泡闪蒸，待冷却固化后形成纤维束，之后从闪蒸喷丝器的喷口41喷出，并在高压气流的携带作用下纤维束运动至导流板10的导流面上，由于导流面11由第一曲面11b、第二曲面11c和第三曲面11d依次连接而成，并且第一曲面11b设置在靠近转向板20的一侧，第二曲面11c位于第一曲面11b和第三曲面11d之间，以使得纤维束30沿着第三曲面11d、第二曲面11c和第一曲面11b依次流动，从而进一步让纤维束30逐级散开，可以使得纤维束30的均匀性更好。另外，在导流板10远离闪蒸纺丝器的一侧设置转向板20，并将转向板20上的转向面21的曲率半径设置成与第一曲面11b的曲率半径相同，可以确保散开后的纤维束能更容易被导向，不会发生堆积。
实施例4
本申请还提供一种闪蒸纺丝设备，包括闪蒸喷丝器、转移装置以及上述实施例的转向装置，转向装置设于闪蒸喷丝器的喷口一侧，转移装置设于所述转向装置的下方，用于收集转向后的纤维。
本实施例中，利用闪蒸喷丝器瞬间发泡闪蒸，待冷却固化后形成纤维束并从闪蒸喷丝器的喷口喷出，然后在高压气流的携带作用下纤维束运动至导流板的导流面上进行逐渐分散，最后由转向板上的转向面将分散后的纤维束转向至转移装置进行收集，从而可以使得纤维束的均匀性更好，有效地避免纤维束在与导流面接触的地方发生堆积，导致后续无法均匀成网的问题。
实施例5
本申请提供一种采用实施例4的闪蒸纺丝设备的闪蒸纺丝方法，包括以下步骤：
纺丝原液从闪蒸喷丝器的喷口喷出，纺丝原液的溶剂瞬间蒸发，纺丝原液的聚合物迅速冷却固化，形成纤维束；
所述纤维束落到所述导流板的导流面上，并沿着所述导流面进行运动且发生分散；
经所述导流板分散的纤维束与所述转向板的转向面的接触，以使得分散后的纤维束发生转向至所述转移装置上进行收集。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和替换，这些改进和替换也应视为本发明的保护范围。

Claims (11)

  1. 一种转向装置，用于对闪蒸喷丝器喷出的纤维进行转向，其特征在于，该转向装置包括导流板和转向板，所述导流板设于所述闪蒸喷丝器喷口的一侧，且所述导流板与所述闪蒸喷丝器在水平方向上间隔一定的距离，所述转向板在所述导流板远离所述闪蒸喷丝器的一侧，用于对所述导流板导出的纤维进行转向；
    所述转向板面向所述导流板的侧面设有呈弧形的转向面，所述转向面朝向所述导流板弯曲；
    所述导流板的顶面形成有导流面，所述导流面包括N个曲面依次连接而成，N个所述曲面的曲率半径沿靠近所述转向板的方向逐渐减小；N为大于或等于1的自然数；
    其中，最靠近所述转向板的所述曲面的曲率半径与所述转向面的曲率半径相同。
  2. 根据权利要求1所述的转向装置，其特征在于，最靠近所述转向板的所述曲面的粗糙度与所述转向面的粗糙度相同；
    其中，所述转向面的粗糙度Ra≤0.1。
  3. 根据权利要求1所述的转向装置，其特征在于，当N等于1时，所述导流面为圆弧曲面，所述圆弧曲面的曲率半径与所述转向面的曲率半径满足以下关系：
    R0＝R1
    其中，R0为所述转向面的曲率半径，R1为所述圆弧曲面的曲率半径。
  4. 根据权利要求3所述的转向装置，其特征在于，所述圆弧曲面的曲率半径介于3cm～15cm之间，且所述导流板在水平方向上的两端的距离介于5cm～20cm之间。
  5. 根据权利要求1所述的转向装置，其特征在于，当N等于2时，所述导流面由第一曲面和第二曲面连接而成，所述第一曲面位于靠近所述转向板的一侧，所述第一曲面、所述第二曲面的曲率半径与所述转向面的曲率半径满足以下关系：
    R0＝R1<R2
    其中，R1为所述第一曲面的曲率半径，R0为所述转向面的曲率半径，R2为所述第二曲面的曲率半径。
  6. 根据权利要求5所述的转向装置，其特征在于，所述第一曲面的曲率半径均介于3cm～15cm之间，所述第二曲面的曲率半径介于5cm～20cm之间。
  7. 根据权利要求5所述的转向装置，其特征在于，所述导流板在水平方向上的两端的距离介于5cm～20cm之间，所述导流板远离所述转向板的一端在竖直方向上的高度介于3cm～10cm之间。
  8. 根据权利要求1所述的转向装置，其特征在于，当N等于3时，所述导流面由第一曲面、第二曲面和第三曲面依次连接而成，所述第一曲面位于靠近所述转向板的一侧，所述第二曲面位于所述第一曲面和所述第三曲面之间，所述第一曲面、所述第二曲面和所述第三曲面的曲率半径与所述转向面的曲率半径满足以下关系：
    R0＝R1<R2<R3
    其中，R0为所述转向面的曲率半径，R1为所述第一曲面的曲率半径，R2为所述第二曲面的曲率半径，R3为所述第三曲面的曲率半径。
  9. 根据权利要求8所述的转向装置，其特征在于，所述第一曲面的曲率半径均介于3cm～15cm之间，所述第二曲面的曲率半径介于4cm～16cm之间，所述第三曲面的曲率半径介于5cm～20之间。
  10. 一种闪蒸纺丝设备，其特征在于，包括闪蒸喷丝器、转移装置以及权利要求1至9中任一项所述的转向装置，所述转向装置设于闪蒸喷丝器的喷口一侧，所述转移装置设于所述转向装置的下方，用于收集转向后的纤维。
  11. 一种采用权利要求10所述的闪蒸纺丝设备的闪蒸纺丝方法，其特征在于，包括以下步骤：
    纺丝原液从闪蒸喷丝器的喷口喷出，纺丝原液的溶剂蒸发，纺丝原液的聚合物冷却固化，形成纤维束；
    所述纤维束落到所述导流板的导流面上，并沿着所述导流面进行运动且发生分散；
    经所述导流板分散的纤维束与所述转向板的转向面的接触，以使得分散后的纤维束发生转向至所述转移装置上进行收集。
PCT/CN2025/085079 2024-03-26 2025-03-26 一种转向装置、闪蒸纺丝设备及其纺丝方法 Pending WO2025201417A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202410347729.X 2024-03-26
CN202410347729.XA CN120700599A (zh) 2024-03-26 2024-03-26 一种转向装置、闪蒸纺丝设备及其纺丝方法

Publications (1)

Publication Number Publication Date
WO2025201417A1 true WO2025201417A1 (zh) 2025-10-02

Family

ID=97119543

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2025/085079 Pending WO2025201417A1 (zh) 2024-03-26 2025-03-26 一种转向装置、闪蒸纺丝设备及其纺丝方法

Country Status (2)

Country Link
CN (1) CN120700599A (zh)
WO (1) WO2025201417A1 (zh)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5045248A (en) * 1989-09-22 1991-09-03 E. I. Du Pont De Nemours And Company Process for making a non-woven sheet
CA2029625A1 (en) * 1990-11-09 1992-05-10 Richard A. Satterfield Process and apparatus for making a non-woven sheet
US5116549A (en) * 1991-01-02 1992-05-26 E. I. Du Pont De Nemours And Company Solution flow splitting for improved sheet uniformity
JPH08302552A (ja) * 1995-05-10 1996-11-19 Asahi Chem Ind Co Ltd フラッシュ紡糸不織布シートの改良された製造方法
JP2003268666A (ja) * 2002-03-08 2003-09-25 Japan Vilene Co Ltd 繊維ウエブ製造方法、その製造装置及びそれを含む不織布
JP2008231623A (ja) * 2007-03-22 2008-10-02 Matsushita Electric Ind Co Ltd 不織布製造装置
WO2023185847A1 (zh) * 2022-03-30 2023-10-05 南通纺织丝绸产业技术研究院 一种混合纤网及其制备方法和应用
CN222455332U (zh) * 2024-03-26 2025-02-11 天津科技大学 一种转向装置及闪蒸纺丝设备

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5045248A (en) * 1989-09-22 1991-09-03 E. I. Du Pont De Nemours And Company Process for making a non-woven sheet
CA2029625A1 (en) * 1990-11-09 1992-05-10 Richard A. Satterfield Process and apparatus for making a non-woven sheet
US5116549A (en) * 1991-01-02 1992-05-26 E. I. Du Pont De Nemours And Company Solution flow splitting for improved sheet uniformity
JPH08302552A (ja) * 1995-05-10 1996-11-19 Asahi Chem Ind Co Ltd フラッシュ紡糸不織布シートの改良された製造方法
JP2003268666A (ja) * 2002-03-08 2003-09-25 Japan Vilene Co Ltd 繊維ウエブ製造方法、その製造装置及びそれを含む不織布
JP2008231623A (ja) * 2007-03-22 2008-10-02 Matsushita Electric Ind Co Ltd 不織布製造装置
WO2023185847A1 (zh) * 2022-03-30 2023-10-05 南通纺织丝绸产业技术研究院 一种混合纤网及其制备方法和应用
CN222455332U (zh) * 2024-03-26 2025-02-11 天津科技大学 一种转向装置及闪蒸纺丝设备

Also Published As

Publication number Publication date
CN120700599A (zh) 2025-09-26

Similar Documents

Publication Publication Date Title
JP5580901B2 (ja) 紡糸領域の温度および湿度を調節できるナノ繊維製造用の電界紡糸装置
US6013223A (en) Process and apparatus for producing non-woven webs of strong filaments
KR100586578B1 (ko) 난류 냉각 송풍을 수반하는 방사 장치 및 방법
ZA200405030B (en) Spinning device and method having cooling by blowing.
JPH06504094A (ja) メルトブローフィラメントを処理するための方法と装置
CN106283220A (zh) 一种热气流辅助双静电场静电纺丝装置
CN101289762A (zh) 一种纤维素纤维的纺丝方法和一体化设备
CN222455332U (zh) 一种转向装置及闪蒸纺丝设备
CN114150439A (zh) 闪蒸纺丝丝束网的牵伸装置及闪蒸纺丝设备
WO2025201417A1 (zh) 一种转向装置、闪蒸纺丝设备及其纺丝方法
CA1165069A (en) Methods and apparatus for guiding filaments
JP2002309431A (ja) 紡糸装置
JP5253319B2 (ja) 不織布製造装置及び不織布の製造方法
CN111218724A (zh) 一种狭槽形气流熔喷模头的新型辅助装置
CN213172701U (zh) 一种纺丝冷却成型装置
CN115537945B (zh) 一种可细化聚合物纤维的熔喷纺丝模头
JPH09157937A (ja) メルトブロー紡糸口金
WO2008067364A2 (en) Apparatus, system, and method for maximizing ultrafine meltblown fiber attenuation
CN212426370U (zh) 一种熔喷无纺布驻极体添加装置
JPS621028B2 (zh)
CN117512882A (zh) 一种纳米纤维、液喷纺丝工艺及液喷纺丝工艺的应用
WO1992018678A1 (en) Filament dispersing device
JPH05186240A (ja) 熱軟化性物質流出用ノズルおよび該ノズルを持つ繊維化装置
CN113512775A (zh) 一种微米级纤维非织造布的制备装置
JP2963563B2 (ja) 粘ちょう物質から直状の繊維を製造する方法および装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 25778624

Country of ref document: EP

Kind code of ref document: A1