WO2023237069A1 - Spinneret plate for producing hollow polyester filaments having multiple acute-angled grooves and multiple leaves - Google Patents

Spinneret plate for producing hollow polyester filaments having multiple acute-angled grooves and multiple leaves Download PDF

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Publication number
WO2023237069A1
WO2023237069A1 PCT/CN2023/099233 CN2023099233W WO2023237069A1 WO 2023237069 A1 WO2023237069 A1 WO 2023237069A1 CN 2023099233 W CN2023099233 W CN 2023099233W WO 2023237069 A1 WO2023237069 A1 WO 2023237069A1
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WIPO (PCT)
Prior art keywords
spinneret
leaves
special
acute
leaf
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PCT/CN2023/099233
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French (fr)
Chinese (zh)
Inventor
张义成
赵军
柴森光
印成
陆佳颖
翟国建
Original Assignee
江苏恒科新材料有限公司
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Publication of WO2023237069A1 publication Critical patent/WO2023237069A1/en

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    • 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
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • 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
    • D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Definitions

  • the invention relates to the technical field of chemical fiber production, and in particular to a spinneret for producing multi-acute groove multi-leaf hollow polyester filaments.
  • the spinneret is a necessary component in the textile and chemical fiber industry.
  • the outer diameter and thickness of the spinneret are determined according to the size of the spinning components used.
  • the spinneret plate surface is divided into the feed surface and the spinneret surface.
  • a certain number of spinneret holes are arranged on the spinneret plate surface in a set arrangement.
  • Each spinneret hole consists of a cylindrical shape with a 60°-120° tapered hole.
  • the guide hole and the micropore connected with the guide hole are processed, and the cross-sectional shape of the micropore determines the cross-sectional shape of the fiber.
  • the function of the spinneret is to squeeze the polymer melt or solution with high elastic viscosity flow through the guide holes and micropores of the spinneret into a specific cross-section thin stream, and then pass through the solidification medium or solidification medium located under the spinneret. Bath solidification to form filaments of corresponding cross-sectional shapes.
  • the micropores of industrial spinnerets are generally circular, but more and more spinnerets with different cross-sections are in use.
  • Known polyester filament spinnerets with different cross-sections include triangular, trilobal, cross-shaped, H-shaped, five-lobed and more leaf shapes and other structural leaf shapes, but these fiber cross-sections have a common feature: there is no Hollow, the special-shaped fibers with capillary grooves only have moisture absorption and quick-drying properties, and cannot meet the requirements of lightweight and air circulation.
  • CN102704007A is a spinneret with a cross-elliptical spinneret hole, which can produce special cross-section shapes.
  • Polyester fiber this fiber has capillary grooves but no hollows.
  • polyester filament hollow fiber spinnerets in the known technology mostly use circular cross-sections surrounded by 2C and 3C, forming a simple circular hollow cross-section, which does not have moisture absorption and quick-drying properties.
  • Some designs add one or several solid leaves to the 2C and 3C sections.
  • CN111235652 A is a spinneret used to produce special-shaped hollow matting fibers. It can produce hollow fibers with solid leaves.
  • the fiber has hollowness, In fact, the heart leaves only change the angle of light refraction and do not have the moisture absorption and quick-drying properties of capillary grooves.
  • CN106801265A is an 8-shaped hollow shape.
  • Polyester fiber FDY yarn and its preparation method have a fiber cross-section in the shape of a peanut with a certain degree of hollowness. The groove formed is shallow, the included angle is large, and there is no wicking effect.
  • the produced fiber can absorb moisture, quickly dry, be lightweight, and integrate air circulation, and its performance can be significantly improved.
  • one object of the present invention is to provide a multi-acute angle multi-groove cross-section for producing multi-acute groove multi-leaf hollow polyester filament spinneret with capillary wicking effect and high hollowness. , so that the spun polyester filament has both high hollowness and multi-channel capillary wicking effect, allowing the fiber to quickly absorb, transport, diffuse and evaporate water, making the fiber lightweight and improving fiber functionality.
  • a spinneret for producing multi-acute grooved and multi-leaf hollow polyester filaments including a spinneret body and a plurality of spinneret holes arranged on the spinneret body.
  • the axis of the silk plate body is arranged in an array of concentric rings with the center of the circle.
  • the spinneret holes include a cylindrical guide hole with a 90° tapered hole and micropores connected to the guide hole.
  • the micropores are composed of a plurality of special-shaped
  • the leaves are assembled in an annular array, and the angle between two adjacent special-shaped leaves is an acute angle.
  • the special-shaped leaves include sequentially connected long-side leaves, semi-circular arc leaves, and short-side leaves.
  • the special-shaped leaves form an obvious
  • the sharp-angled multi-groove cross-section has an obvious capillary wicking effect, so that the imitation polyester filament can quickly absorb, transport, diffuse and evaporate water.
  • the long side leaves and the short side leaves of each of the special-shaped leaves are arranged parallel to each other, and the head end of one of the short side leaves faces the outer surface of the long side leaf of the nearest adjacent special-shaped leaf. , and there is a gap between the two, which facilitates the melt to form a stable hollow cavity, and the polyester filament produced has better hollowness.
  • the concave surfaces of all the semi-circular arc leaves in the special-shaped leaves point to the center of the micropores surrounded by the special-shaped leaves, and the concave surface of the semi-circular arc leaves of one of the special-shaped leaves in the micropores points to the center of the micropores.
  • the center of the spinneret body makes each micropore form a centripetal structure, so that each micropore will have a good centripetal effect, resulting in a good synergistic effect and better spinning stability.
  • the width of the gap is 0.09-0.13mm.
  • the number of the special-shaped leaves is 5 to 8 leaves, and the corresponding number of grooves with capillary wicking effect formed is 5 to 8.
  • the acute angles are smaller, the grooves are more obvious, and the capillary wicking effect is better.
  • the angle formed by two adjacent special-shaped leaves is not greater than 72°.
  • the capillary wicking effect depends on the angle of the capillary groove. The smaller the angle, the better the capillary wicking effect.
  • the acute angle The shape of capillary grooves can significantly improve the moisture absorption functionality of the fiber. Therefore, an included angle of no more than 72° can significantly improve the fiber functionality.
  • the theoretical hollowness of the micropores surrounded by the special-shaped leaves is not less than 65%.
  • the hollowness is high, the lightweight effect is better, and good air management function is achieved.
  • the width of the rectangle after expansion of the special-shaped leaves is 0.06-0.12mm, and the equivalent diameter of the special-shaped leaves is 0.10-0.30mm.
  • the processing depth of the micropores is 0.40-0.60mm. Within this range, a stable and complete fiber cross-section can be obtained when the melt exits the micropores.
  • a plurality of the spinneret holes are distributed in an array of concentric circles and evenly arranged on the same concentric circle.
  • the spinneret holes in two adjacent concentric circles are dislocated, and the offset angle is 5°-10°, staggered setting allows each single filament to be cooled evenly and fully, avoiding bonding between filaments.
  • the special-shaped leaves make the polyester filament spun from the spinneret have a large specific surface area, an acute-angle multi-groove structure, and good hollowness.
  • the resulting textile fabric has the characteristics of light weight, rapid water absorption, water delivery, Differentiated functions such as diffusion and volatilization.
  • Figure 1 is a front view of an embodiment provided by the present invention.
  • Figure 2 is the right view of Figure 1;
  • Figure 3 is a left view of Figure 1;
  • Figure 4 is a partial cross-sectional view of Figure 1;
  • Figure 5 is a structural diagram of a special-shaped leaf in an embodiment provided by the present invention.
  • One embodiment of the present invention provides a spinneret for producing multi-acute grooved and multi-leaf hollow polyester filaments, including a spinneret body 1 and a plurality of spinneret bodies arranged on the spinneret body 1
  • the spinneret holes 2 are arranged in a concentric ring shape with the axis of the spinneret body 1 as the center.
  • the spinneret holes 2 include a cylinder with a 90° tapered hole.
  • the microhole 202 is composed of a plurality of special-shaped leaves in an annular array. The angle between two adjacent special-shaped leaves is an acute angle.
  • the leaves include long-side leaves 2021, semi-arc leaves 2022 and short-side leaves 2023 that are connected in sequence.
  • polyester filament The production process of polyester filament is that the melt with high elastic viscosity flow is fed through the guide hole 201.
  • the function of the guide hole 201 is to guide the melt to continuously and smoothly enter the micropores 202.
  • a 90° tapered hole is set at the entrance of the guide hole 201. It makes the melt convergence relatively gentle, avoids dead corners and vortex-like melt at the entrance, and ensures continuous and stable melt flow.
  • the micropores 202 extrusion mold the cross-section of the polyester filament. Due to the expansion and tendency of the melt, Circle effect, the melt is finally extruded to form a melt stream similar to the cross-sectional shape of the micropore 203. After stretching, thinning, cooling and solidification, a multi-leaf hollow polyester filament is formed.
  • the shape of the spinneret hole 2 determines the polyester filament.
  • the cross-sectional shape and performance of the invention are provided with multiple special-shaped leaves.
  • the special-shaped leaves include sequentially connected long-side leaves 2021, semi-circular arc leaves 2022 and short-side leaves 2023.
  • the long-side leaves 2021 and short-side leaves 2023 pass through the semi-circular arc.
  • the leaves 2022 are transitionally connected, with good molding effect, easy to form polyester filaments with multiple grooves, improving the performance of the polyester filaments, and making it easy to arrange the special-shaped leaves, and then design the micropores 202 with more than 5 special-shaped leaves. Taking into account the processability of micropore 202, it also increases the specific surface area and hollowness of the polyester filament, making the polyester filament lightweight and air-conditioning, and improving the functionality of the polyester filament.
  • the long side leaves 2021 and the short side leaves 2023 are arranged parallel, and the long side leaves 2021 and the short side leaves 2023 are parallel to the semi-circular arc leaves 2022.
  • center line in which the head end of one of the short side leaves 2033 faces the outer side of the nearest long side leaf 2021 adjacent to it, and the head end of the short side leaf 2023 is toward the outer side of the nearest long side leaf 2021 adjacent to it.
  • the semi-circular arc blade 2022 facilitates the formation of a multi-groove cross-sectional shape, which helps to absorb moisture.
  • the end of the melt expands and bonds at the gap C to form a hollow cavity, so that the polyester produced
  • the filament has excellent hollowness, which is lightweight and promotes air circulation.
  • the inner concave surfaces of all the semi-circular arc leaves 2022 in the special-shaped leaves point to the center of the micropores 202 surrounded by the special-shaped leaves, and the inner concave surface of the semi-circular arc leaves 2022 of one of the special-shaped leaves in the micropores 202 Pointing to the center of the spinneret body 1 makes each microhole 202 form a centripetal structure, so that each microhole 202 will have a good centripetal effect, thereby producing a good synergistic effect and better spinning stability.
  • the width of the gap C is 0.09-0.13mm.
  • the gap C helps to form polyester filament with high hollowness, an excessive gap C will cause the polyester filament to be difficult to form and affect other properties of the polyester filament. Such as strength, so the gap C of the present invention is between 0.09-0.13mm.
  • the theoretical hollowness of the special-shaped leaves is not less than 65%.
  • the hollowness refers to the hollow degree of the fiber cross section.
  • the percentage of the cross-sectional area divided by the inner cross-sectional area of the micropore 202 is called the theoretical hollowness.
  • the obtained polyester filament has a fiber layer with good hollowness, which not only makes the textile fabric made of polyester filament lightweight, soft and elastic, but also allows air to penetrate the hollow fiber layer, thereby enhancing air flow and thus promoting steam. Maximizing cooling, its synergistic effect can enable textile fabrics to achieve better heat and moisture comfort management effects.
  • the angle formed by two adjacent special-shaped leaves is not greater than 72°, that is, the included angle between the center lines of two adjacent special-shaped leaves is 72°.
  • the grooves are at an acute angle, the grooves are deep, and the groove width is small, so that the polyester filament has a capillary wicking effect, which significantly improves the wicking and moisture permeability.
  • the number of special-shaped leaves is 5 leaves or 6 leaves or 7 leaves or 8 leaves
  • the corresponding number of grooves with capillary wicking effect formed is 5 or 6 or 7 or 8, the greater the number of leaves.
  • the greater the number of grooves and the smaller the angle the better the capillary wicking effect, the more prominent the intensive wicking effect, and the better the fiber water absorption, water transport, and diffusion effects.
  • the width of the rectangular shape of the special-shaped leaves after expansion is 0.06-0.12mm
  • the equivalent diameter of the special-shaped leaves is 0.10-0.30mm
  • the expanded rectangular shape of the special-shaped leaves The width and the equivalent diameter of the special-shaped leaves will affect the forming and performance of the polyester filament.
  • the width of the expanded rectangular leaves is less than 0.06mm, the spinneret processing is difficult, and the equivalent diameter is less than 0.10mm or greater than 0.30mm, and the spinnability deteriorates.
  • the width of the rectangle after the special-shaped leaves of the present invention are expanded is 0.06-0.12mm, and the equivalent diameter of the special-shaped leaves is 0.10-0.30mm, so that the fiber can form a stable cross-section and the molding effect is better.
  • a plurality of the spin holes 2 form a plurality of concentric circles, and the spin holes 2 in two adjacent concentric circles are arranged in a staggered position, and the spin holes 2 are staggered.
  • the included angle is 5°-10°.
  • the first circle, the second circle and the third circle are taken.
  • One spin hole 2 in the second circle serves as the first spin hole 2a.
  • the line connecting the center of the first spin hole 2a and the center of the spinneret body 1 is the first side line.
  • the line between the first circle and the first spin hole 2 is The nearest spinneret hole 2a is the second spinneret hole 2b.
  • the line connecting the center of the second spinneret hole 2b and the center of the spinneret plate body 1 is the second side line.
  • the distance between the third circle and the first spinneret hole 2a is The closest one is the third spin hole 2c.
  • the line connecting the center of the third spin hole 2c and the center of the spinneret body 1 is the third side line.
  • the angle between the second side line and the first side line is 5°-10°.
  • the angle between the third side line and the first side line is 5°-10°, preferably, the angle between the second side line and the first side line is 8°, and the angle between the third side line and the first side line is 8°.
  • the number of holes of spinneret 2 is 48 holes
  • the number of holes of spinneret 2 of the first circle is 8 holes
  • the number of holes of spinneret 2 of the second circle is 18 holes
  • the number of holes of spinneret 2 of the third circle is 18 holes.
  • the number of holes in 2 is 22.
  • the staggered setting allows each single filament to be cooled evenly and fully to avoid adhesion between the filaments.
  • the spinneret holes 2 are arranged as evenly as possible in the entire spinneret body 1 for effective spinning. within the area.
  • the depth H of the micropores 202 is 0.40-0.60mm.
  • the depth H of the micropores 202 affects the forming of the polyester filament. If the depth H of the micropores 202 If the depth H is too small, the elastic potential energy of the melt changes too much, causing the cross-section to fold, and an effective cross-section cannot be formed through the micropores 202. If the depth H of the micropores 202 is too large, it will adversely affect the back pressure of the spinneret and melt the melt. The extrusion effect of the body is poor, so the depth H of the micropores 202 is 0.40-0.60mm, and the molding effect is good.
  • the polyester filament is made from the multi-leaf hollow polyester filament spinneret of the present invention.
  • the number of spinneret holes 2 is 12-72 holes, and the polyester filament is long.
  • the linear density of the wire is 30-167dtex, and the linear density of the single wire is 1.0-4.5dtex.
  • a spinneret for producing multi-acute grooved multi-leaf hollow polyester filaments which includes a spinneret body 1 and five spinnerets arranged on the spinneret body 1 Hole 2, 5 spinneret holes 2 form 3 concentric circles with the axis of the spinneret body 1 as the center.
  • the three concentric circles are the first circle and the second circle in sequence from the center of the spinneret to the outer edge. and the third circle, the number of holes of spinneret 2 in the first circle is 8 holes, the number of holes of spinneret 2 in the second circle is 18 holes, and the number of holes of spinneret 2 in the third circle is 22 holes.
  • the spinneret 2 includes a cylindrical guide hole 201 with a 90° tapered hole, and a microhole 202 connected with the guide hole 201.
  • the microhole 202 includes 5 special-shaped leaves assembled in an annular array, and the special-shaped leaves include sequentially connected Long side leaves 2021, semi-circular arc leaves 2022 and short side leaves 2023.
  • the long side leaves 2021 and the short side leaves 2023 are arranged in parallel, and the head end of one short side leaf 2023 faces the long side of the nearest special-shaped leaf adjacent to it.
  • the inner concave surfaces of all the semi-circular arc leaves 2022 in the special-shaped leaves point to the center of the micropores 202 surrounded by the special-shaped leaves.
  • the half of one of the special-shaped leaves in the micropores 202 The inner concave surface of the arc blade 2022 points to the center of the spinneret body 1.
  • the angle formed by two adjacent special-shaped blades is 72°.
  • the width of the gap C is 0.13mm.
  • the width of the rectangle after the special-shaped blades are expanded is 0.12mm.
  • the equivalent diameter of the leaf is 0.30mm, the hollowness of the special-shaped leaf is 66%, and the depth H of the micropore 203 is 0.60mm.
  • the polyester filament is produced using the spinneret in the embodiment.
  • the product specification is 83dtex/50f, that is, the total linear density is 83 decitex.
  • the polyester hollow filament is composed of 50 monofilaments.
  • the converted monofilament linear density is 1.66dtex.
  • the fiber cross-section Presenting 5 leaves and 5 acute-angled grooves, this textile fabric made of polyester filament can quickly transfer moisture from the surface of human skin.
  • the hollow fiber structure not only makes the textile fabric lightweight, soft and elastic to the touch, but also makes Air can penetrate the hollow fiber layer to enhance air flow, thereby maximizing steam cooling. The synergistic effect allows the textile fabric to achieve better heat and humidity comfort management.

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

Abstract

A spinneret plate for producing hollow polyester filaments having multiple acute-angled grooves and multiple leaves. The spinneret plate comprises a spinneret plate body (1) and a plurality of spinneret holes (2), which are provided in the spinneret plate body (1), wherein the plurality of spinneret holes (2) are distributed in a plurality of concentric rings with the axis of the spinneret plate body (1) as the center of a circle. Each spinneret hole (2) comprises a cylindrical guide hole (201) with a 90° tapered hole, and a micro-hole (202), which communicates with the guide hole (201), wherein the micro-hole (202) is formed by combining a plurality of specially shaped leaves in a ring array, and an included angle between every two adjacent specially shaped leaves is an acute angle; and each specially shaped leaf comprises a long-side leaf (2021), a semicircular arc-shaped leaf (2022), and a short-side leaf (2023), which communicate with one another in sequence. The polyester filaments prepared by the spinneret plate have the differential functions of a light weight, rapid water absorption, delivery, diffusion, volatilization, etc.

Description

一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板A spinneret for producing multi-acute grooved multi-leaf hollow polyester filaments 技术领域Technical field
本发明涉及化纤生产技术领域，尤其是涉及一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板。The invention relates to the technical field of chemical fiber production, and in particular to a spinneret for producing multi-acute groove multi-leaf hollow polyester filaments.
背景技术Background technique
喷丝板是纺织化纤行业中必用的部件，根据其所采用的纺丝组件大小确定喷丝板外径与厚度。喷丝板面区分进料面和出丝面，一定数量的喷丝孔以设定的排列方式在喷丝板面上布置，每一个喷丝孔都由60°-120°锥孔的圆柱形导孔和与导孔相通的微孔加工而成，微孔截面形状决定了纤维截面形状。喷丝板的作用是将高弹粘流态的聚合物熔体或者溶液，通过喷丝板导孔和微孔挤压成特定截面状细流，再经过位于喷丝板下的凝固介质或凝固浴固化而形成相应截面形状的丝条。The spinneret is a necessary component in the textile and chemical fiber industry. The outer diameter and thickness of the spinneret are determined according to the size of the spinning components used. The spinneret plate surface is divided into the feed surface and the spinneret surface. A certain number of spinneret holes are arranged on the spinneret plate surface in a set arrangement. Each spinneret hole consists of a cylindrical shape with a 60°-120° tapered hole. The guide hole and the micropore connected with the guide hole are processed, and the cross-sectional shape of the micropore determines the cross-sectional shape of the fiber. The function of the spinneret is to squeeze the polymer melt or solution with high elastic viscosity flow through the guide holes and micropores of the spinneret into a specific cross-section thin stream, and then pass through the solidification medium or solidification medium located under the spinneret. Bath solidification to form filaments of corresponding cross-sectional shapes.
目前工业化的喷丝板的微孔一般呈圆形，但也已经有越来越多的异截面喷丝板在使用。公知技术的涤纶长丝异截面喷丝板有三角形、三叶形、十字形、H形、五叶形以及更多叶形和其它结构叶形，但是这些纤维截面都有一个共同的特征是没有中空，所具有毛细管凹槽的异形纤维仅有吸湿快干特性，无法达到轻量化和空气流通要求，例如CN102704007A一种带有十字椭圆形喷丝孔的喷丝板，可以生产特殊十字截面形状的涤纶纤维，这种纤维有毛细管沟槽但没有中空。而公知技术的涤纶长丝中空纤维喷丝板多采用2C、3C围成的圆形截面，形成单纯的圆中空截面，不具备吸湿快干特性。有些设计在2C、3C截面上增加一个或数个实心叶，例如CN111235652 A一种用于生产异形中空消光纤维的喷丝板，可以生产带有实心叶的中空纤维，虽然纤维有中空度，但其实心叶也仅仅是改变光线折射角度，不具备毛细凹槽的吸湿快干特性。还有一些设计将多个2C、3C圆形截面一字排列使纤维截面呈扁平中空葫芦形，这些中空度很小，也没有具有芯吸效应的毛细沟槽，例如CN106801265A一种8字中空形聚酯纤维FDY丝及其制备方法，纤维截面呈具有一定中空度花生形状，其形成的沟槽浅，夹角大，也不具备芯吸效应。At present, the micropores of industrial spinnerets are generally circular, but more and more spinnerets with different cross-sections are in use. Known polyester filament spinnerets with different cross-sections include triangular, trilobal, cross-shaped, H-shaped, five-lobed and more leaf shapes and other structural leaf shapes, but these fiber cross-sections have a common feature: there is no Hollow, the special-shaped fibers with capillary grooves only have moisture absorption and quick-drying properties, and cannot meet the requirements of lightweight and air circulation. For example, CN102704007A is a spinneret with a cross-elliptical spinneret hole, which can produce special cross-section shapes. Polyester fiber, this fiber has capillary grooves but no hollows. However, polyester filament hollow fiber spinnerets in the known technology mostly use circular cross-sections surrounded by 2C and 3C, forming a simple circular hollow cross-section, which does not have moisture absorption and quick-drying properties. Some designs add one or several solid leaves to the 2C and 3C sections. For example, CN111235652 A is a spinneret used to produce special-shaped hollow matting fibers. It can produce hollow fibers with solid leaves. Although the fiber has hollowness, In fact, the heart leaves only change the angle of light refraction and do not have the moisture absorption and quick-drying properties of capillary grooves. There are also some designs that arrange multiple 2C and 3C circular cross-sections in a straight line to make the fiber cross-section have a flat hollow gourd shape. These hollows are very small and do not have capillary grooves with wicking effect. For example, CN106801265A is an 8-shaped hollow shape. Polyester fiber FDY yarn and its preparation method have a fiber cross-section in the shape of a peanut with a certain degree of hollowness. The groove formed is shallow, the included angle is large, and there is no wicking effect.
因此，如果设计出更多毛细管沟槽，中空度更高的异形喷丝板，可以使生产出来的纤维吸湿快干和轻量化与空气流通集于一身并使性能得以明显提升。Therefore, if more capillary grooves and a special-shaped spinneret with higher hollowness are designed, the produced fiber can absorb moisture, quickly dry, be lightweight, and integrate air circulation, and its performance can be significantly improved.
发明内容Contents of the invention
鉴于上述不足，本发明一个目的是提供一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，具有毛细孔芯吸效应的多锐角多沟槽截面，又具有较高的中空度，使纺制的涤纶长丝兼具较高中空度与多管道毛细管芯吸效应，使得纤维能够快速吸水、输水、扩散和挥发，并使纤维轻量化，提高了纤维功能性。In view of the above shortcomings, one object of the present invention is to provide a multi-acute angle multi-groove cross-section for producing multi-acute groove multi-leaf hollow polyester filament spinneret with capillary wicking effect and high hollowness. , so that the spun polyester filament has both high hollowness and multi-channel capillary wicking effect, allowing the fiber to quickly absorb, transport, diffuse and evaporate water, making the fiber lightweight and improving fiber functionality.
为了实现上述技术目的，达到上述的技术要求，本发明所采用的技术方案是： In order to achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by the present invention is:
一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，包括喷丝板本体、多个设置在喷丝板本体上的喷丝孔，多个所述喷丝孔以所述喷丝板本体的轴线为圆心呈数组同心圆环状排布，所述喷丝孔包括带有90°锥孔的圆柱形导孔、与导孔相通的微孔，所述微孔由多个异形叶以环形阵列方式组合而成，相邻2个所述异形叶的夹角为锐角，所述异形叶包括依序连通的长边叶、半圆弧叶和短边叶，通过异形叶形成明显的锐角多沟槽截面，具有明显的毛细孔芯吸效应，这样仿制的涤纶长丝够快速吸水、输水、扩散和挥发。A spinneret for producing multi-acute grooved and multi-leaf hollow polyester filaments, including a spinneret body and a plurality of spinneret holes arranged on the spinneret body. The axis of the silk plate body is arranged in an array of concentric rings with the center of the circle. The spinneret holes include a cylindrical guide hole with a 90° tapered hole and micropores connected to the guide hole. The micropores are composed of a plurality of special-shaped The leaves are assembled in an annular array, and the angle between two adjacent special-shaped leaves is an acute angle. The special-shaped leaves include sequentially connected long-side leaves, semi-circular arc leaves, and short-side leaves. The special-shaped leaves form an obvious The sharp-angled multi-groove cross-section has an obvious capillary wicking effect, so that the imitation polyester filament can quickly absorb, transport, diffuse and evaporate water.
作为优选的技术方案，每个所述异形叶其长边叶与短边叶平行设置，且其中1个所述短边叶的头端朝向与其相邻最近的异形叶中长边叶的外侧面，且两者之间设有间隙，这样便于熔体形成稳定的中空腔，制成的涤纶长丝中空度更好。As a preferred technical solution, the long side leaves and the short side leaves of each of the special-shaped leaves are arranged parallel to each other, and the head end of one of the short side leaves faces the outer surface of the long side leaf of the nearest adjacent special-shaped leaf. , and there is a gap between the two, which facilitates the melt to form a stable hollow cavity, and the polyester filament produced has better hollowness.
作为优选的技术方案，所述异形叶中所有半圆弧叶的内凹面指向所述异形叶围成的微孔的中心，所述微孔中其中一个异形叶的半圆弧叶的内凹面指向喷丝板本体的圆心，使得各个微孔形成向心结构，这样各微孔就会有很好的向心效应，从而产生良好的协同效应，纺丝稳定性更好。As a preferred technical solution, the concave surfaces of all the semi-circular arc leaves in the special-shaped leaves point to the center of the micropores surrounded by the special-shaped leaves, and the concave surface of the semi-circular arc leaves of one of the special-shaped leaves in the micropores points to the center of the micropores. The center of the spinneret body makes each micropore form a centripetal structure, so that each micropore will have a good centripetal effect, resulting in a good synergistic effect and better spinning stability.
作为优选的技术方案，所述间隙的宽度为0.09-0.13mm。As a preferred technical solution, the width of the gap is 0.09-0.13mm.
作为优选的技术方案，所述异形叶的数量为5至8叶，相对应形成的具有毛细管芯吸效应的沟槽数量为5至8个，锐角更小，沟槽更加明显，毛细管芯吸效应更好。As a preferred technical solution, the number of the special-shaped leaves is 5 to 8 leaves, and the corresponding number of grooves with capillary wicking effect formed is 5 to 8. The acute angles are smaller, the grooves are more obvious, and the capillary wicking effect is better.
作为优选的技术方案，相邻2个所述异形叶形成的夹角不大于72°，毛细管芯吸效应取决于毛细管沟槽的夹角，夹角越小，毛细管芯吸效应就越好，锐角形态的毛细管沟槽可以明显提升纤维的吸湿功能性，因此，夹角不大于72°能较为明显提升纤维功能性。As a preferred technical solution, the angle formed by two adjacent special-shaped leaves is not greater than 72°. The capillary wicking effect depends on the angle of the capillary groove. The smaller the angle, the better the capillary wicking effect. The acute angle The shape of capillary grooves can significantly improve the moisture absorption functionality of the fiber. Therefore, an included angle of no more than 72° can significantly improve the fiber functionality.
作为优选的技术方案，所述异形叶围成的微孔的理论中空度不小于65%，中空度高，轻量化效果更好，达到良好的空气管理功能。As a preferred technical solution, the theoretical hollowness of the micropores surrounded by the special-shaped leaves is not less than 65%. The hollowness is high, the lightweight effect is better, and good air management function is achieved.
作为优选的技术方案，所述异形叶展开后矩形的宽度为0.06-0.12mm，所述异形叶的当量直径为0.10-0.30mm，考虑到熔体的粘度以及熔体的剪切成型，在此范围内，能达到为稳定的纤维截面，不会造成单丝断裂、可纺性不良等现象。As a preferred technical solution, the width of the rectangle after expansion of the special-shaped leaves is 0.06-0.12mm, and the equivalent diameter of the special-shaped leaves is 0.10-0.30mm. Taking into account the viscosity of the melt and the shear forming of the melt, here Within this range, the most stable fiber cross-section can be achieved without causing single filament breakage or poor spinnability.
作为优选的技术方案，所述微孔的加工深度为0.40-0.60mm，在此范围内，在熔体从微孔时能够得到稳定、完整的纤维截面。As a preferred technical solution, the processing depth of the micropores is 0.40-0.60mm. Within this range, a stable and complete fiber cross-section can be obtained when the melt exits the micropores.
作为优选的技术方案，多个所述喷丝孔分布在数组同心圆上并在同一个同心圆上均布排列，相邻2个所述同心圆中的喷丝孔错位设置，错位夹角为5°-10°，错位设置使每一根单丝都能得到均匀充分冷却，避免丝条之间产生粘结。As a preferred technical solution, a plurality of the spinneret holes are distributed in an array of concentric circles and evenly arranged on the same concentric circle. The spinneret holes in two adjacent concentric circles are dislocated, and the offset angle is 5°-10°, staggered setting allows each single filament to be cooled evenly and fully, avoiding bonding between filaments.
本发明的有益效果是： The beneficial effects of the present invention are:
通过异形叶使得喷丝板纺制的涤纶长丝具有较大的比表面积和锐角多沟槽的结构，并且具有很好的中空度，制得的纺织面料具有轻量、快速吸水、输水、扩散和挥发等差别化功能。The special-shaped leaves make the polyester filament spun from the spinneret have a large specific surface area, an acute-angle multi-groove structure, and good hollowness. The resulting textile fabric has the characteristics of light weight, rapid water absorption, water delivery, Differentiated functions such as diffusion and volatilization.
附图说明Description of the drawings
图1为本发明提供的一个实施例的主视图；Figure 1 is a front view of an embodiment provided by the present invention;
图2为图1的右视图；Figure 2 is the right view of Figure 1;
图3是图1的左视图；Figure 3 is a left view of Figure 1;
图4是图1的部分剖视图；Figure 4 is a partial cross-sectional view of Figure 1;
图5是本发明提供的一个实施例中的异形叶的结构图；Figure 5 is a structural diagram of a special-shaped leaf in an embodiment provided by the present invention;
在图1-图5中，1、喷丝板本体；2、喷丝孔；2a、第一喷丝孔；2b、第二喷丝孔；2c、第三喷丝孔；201、导孔；202、微孔；2021、长边叶；2022、半圆弧叶；2023、短边叶；C、间隙。In Figures 1 to 5, 1. Spinneret body; 2. Spinneret; 2a, first spinhole; 2b, second spinhole; 2c, third spinhole; 201, guide hole; 202. Micropores; 2021. Long side leaves; 2022. Semi-circular arc leaves; 2023. Short side leaves; C. Gap.
实施方式Implementation
下面结合附图对本发明进一步描述。The present invention will be further described below in conjunction with the accompanying drawings.
本发明实施例的附图中相同或相似的标号对应相同或相似的部件；在本发明的描述中，需要理解的是，若出现术语“顶”、“底”、“左”、“右”、“前”、“后”、“内”、“外”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，仅是为了便于描述本发明，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此附图中描述位置关系的用语仅用于示例性说明，不能理解为对本专利的限制，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。In the drawings of the embodiments of the present invention, the same or similar numbers correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "top", "bottom", "left" and "right" appear, The directions or positional relationships indicated by "front", "back", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and are not intended to indicate or imply. The device or element must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the positional relationships in the drawings are only for illustrative purposes and cannot be understood as limitations of this patent. For those of ordinary skill in the art, In other words, the specific meaning of the above terms can be understood according to the specific circumstances.
请参照图1-图5，本发明一个实施例提供的一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，包括喷丝板本体1、多个设置在喷丝板本体1上的喷丝孔2，多个所述喷丝孔2以所述喷丝板本体1的轴线为圆心呈同心圆环状排布，所述喷丝孔2包括带有90°锥孔的圆柱形导孔201、与导孔201相通的微孔202，所述微孔202由多个异形叶以环形阵列方式组合而成，相邻2个所述异形叶的夹角为锐角，所述异形叶包括依序连通的长边叶2021、半圆弧叶2022和短边叶2023。Please refer to Figures 1 to 5. One embodiment of the present invention provides a spinneret for producing multi-acute grooved and multi-leaf hollow polyester filaments, including a spinneret body 1 and a plurality of spinneret bodies arranged on the spinneret body 1 The spinneret holes 2 are arranged in a concentric ring shape with the axis of the spinneret body 1 as the center. The spinneret holes 2 include a cylinder with a 90° tapered hole. -shaped guide hole 201 and a microhole 202 connected with the guide hole 201. The microhole 202 is composed of a plurality of special-shaped leaves in an annular array. The angle between two adjacent special-shaped leaves is an acute angle. The leaves include long-side leaves 2021, semi-arc leaves 2022 and short-side leaves 2023 that are connected in sequence.
涤纶长丝的制作过程是高弹粘流态的熔体经导孔201进料，导孔201的作用是引导熔体连续平滑地进入微孔202，导孔201的入口处设置90°锥孔使得熔体收敛比较缓和，避免在入口处产生死角和出现旋涡状的熔体，保证熔体流动的连续稳定，微孔202对涤纶长丝的截面进行挤压成型，由于熔体胀大及趋圆效应，熔体最后被挤压形成近似于微孔203截面形状的熔体细流，经拉伸细化冷却固化后形成多叶中空涤纶长丝，喷丝孔2的形状决定了涤纶长丝的截面形状以及性能，本发明设置多个异形叶，异形叶包括依序连通的长边叶2021、半圆弧叶2022和短边叶2023，长边叶2021和短边叶2023通过半圆弧叶2022过渡连接，成型效果好，易于形成多沟槽的涤纶长丝，提升涤纶长丝的性能，且能够使得异形叶易于排布，进而设计出成具有5个以上异形叶的微孔202，兼顾了微孔202的加工性，同时提高了涤纶长丝的比表面积和中空度，使得涤纶长丝具有轻量化和空气调节功能，提升涤纶长丝的功能性。The production process of polyester filament is that the melt with high elastic viscosity flow is fed through the guide hole 201. The function of the guide hole 201 is to guide the melt to continuously and smoothly enter the micropores 202. A 90° tapered hole is set at the entrance of the guide hole 201. It makes the melt convergence relatively gentle, avoids dead corners and vortex-like melt at the entrance, and ensures continuous and stable melt flow. The micropores 202 extrusion mold the cross-section of the polyester filament. Due to the expansion and tendency of the melt, Circle effect, the melt is finally extruded to form a melt stream similar to the cross-sectional shape of the micropore 203. After stretching, thinning, cooling and solidification, a multi-leaf hollow polyester filament is formed. The shape of the spinneret hole 2 determines the polyester filament. The cross-sectional shape and performance of the invention are provided with multiple special-shaped leaves. The special-shaped leaves include sequentially connected long-side leaves 2021, semi-circular arc leaves 2022 and short-side leaves 2023. The long-side leaves 2021 and short-side leaves 2023 pass through the semi-circular arc. The leaves 2022 are transitionally connected, with good molding effect, easy to form polyester filaments with multiple grooves, improving the performance of the polyester filaments, and making it easy to arrange the special-shaped leaves, and then design the micropores 202 with more than 5 special-shaped leaves. Taking into account the processability of micropore 202, it also increases the specific surface area and hollowness of the polyester filament, making the polyester filament lightweight and air-conditioning, and improving the functionality of the polyester filament.
如图1-图5所示，在一些具体的实施方式中，所述长边叶2021与所述短边叶2023平行设置，长边叶2021和短边叶2023平行于半圆弧叶2022的中心线，其中1个所述短边叶2033的头端朝向与其相邻的最近的长边叶2021的外侧面，短边叶2023的头端与其相邻的最近的长边叶2021的外侧面之间设有间隙C，即为相邻2个所述异形叶的最小间隙，由于长边叶2021和短边叶2023平行设置，这样熔体经过微孔202时，剪切更加稳定，不会出现断面无法成型的情况；半圆弧叶2022便于形成多沟槽的截面形状，有助于吸湿，熔体的端部膨大在间隙C处粘结形成中空腔，这样就能使得制得的涤纶长丝有极好的中空度，具有轻量化和促进空气流动循环的特性。As shown in Figures 1 to 5, in some specific embodiments, the long side leaves 2021 and the short side leaves 2023 are arranged parallel, and the long side leaves 2021 and the short side leaves 2023 are parallel to the semi-circular arc leaves 2022. center line, in which the head end of one of the short side leaves 2033 faces the outer side of the nearest long side leaf 2021 adjacent to it, and the head end of the short side leaf 2023 is toward the outer side of the nearest long side leaf 2021 adjacent to it. There is a gap C between them, which is the minimum gap between two adjacent special-shaped leaves. Since the long-side leaves 2021 and the short-side leaves 2023 are arranged in parallel, when the melt passes through the micropores 202, the shearing is more stable and will not There is a situation where the cross section cannot be formed; the semi-circular arc blade 2022 facilitates the formation of a multi-groove cross-sectional shape, which helps to absorb moisture. The end of the melt expands and bonds at the gap C to form a hollow cavity, so that the polyester produced The filament has excellent hollowness, which is lightweight and promotes air circulation.
进一步的，所述异形叶中所有半圆弧叶2022的内凹面指向所述异形叶围成的微孔202的中心，所述微孔202中其中一个异形叶的半圆弧叶2022的内凹面指向喷丝板本体1的圆心，使得各个微孔202形成向心结构，这样各微孔202就会有很好的向心效应，从而产生良好的协同效应，纺丝稳定性更好。Further, the inner concave surfaces of all the semi-circular arc leaves 2022 in the special-shaped leaves point to the center of the micropores 202 surrounded by the special-shaped leaves, and the inner concave surface of the semi-circular arc leaves 2022 of one of the special-shaped leaves in the micropores 202 Pointing to the center of the spinneret body 1 makes each microhole 202 form a centripetal structure, so that each microhole 202 will have a good centripetal effect, thereby producing a good synergistic effect and better spinning stability.
进一步的，所述间隙C的宽度为0.09-0.13mm，虽然间隙C有助于形成高中空度的涤纶长丝，但是间隙C过大会导致涤纶长丝不易成型，影响涤纶长丝的其他性能，比如强度，因此本发明的间隙C在0.09-0.13mm之间。Furthermore, the width of the gap C is 0.09-0.13mm. Although the gap C helps to form polyester filament with high hollowness, an excessive gap C will cause the polyester filament to be difficult to form and affect other properties of the polyester filament. Such as strength, so the gap C of the present invention is between 0.09-0.13mm.
进一步的，所述异形叶的理论中空度不小于65%，中空度是指纤维截面的中空程度，以微孔202截面的内截面积除以外截面积的百分比称之为理论中空度，通过长边叶2021、半圆弧叶2022和短边叶2023形成的不等长U形结构，配合相邻2个异形叶的最小间隙C，使得异形中空长丝的实际中空度不小于20%，制得的涤纶长丝具有中空度很好的纤维层，不仅使得涤纶长丝做成的纺织面料轻量化，手感柔和而有弹性，还是使得空气穿透中空纤维层，使得空气流动增强，进而促进蒸汽降温最大化，其协同作用可以使纺织面料达到较好的湿热舒适管理效果。Further, the theoretical hollowness of the special-shaped leaves is not less than 65%. The hollowness refers to the hollow degree of the fiber cross section. The percentage of the cross-sectional area divided by the inner cross-sectional area of the micropore 202 is called the theoretical hollowness. The unequal length U-shaped structure formed by the side leaves 2021, the semi-circular arc leaves 2022 and the short side leaves 2023, combined with the minimum gap C between the two adjacent special-shaped leaves, makes the actual hollowness of the special-shaped hollow filaments not less than 20%, making the system The obtained polyester filament has a fiber layer with good hollowness, which not only makes the textile fabric made of polyester filament lightweight, soft and elastic, but also allows air to penetrate the hollow fiber layer, thereby enhancing air flow and thus promoting steam. Maximizing cooling, its synergistic effect can enable textile fabrics to achieve better heat and moisture comfort management effects.
如图1-图5所示，在一些具体的实施方式中，相邻2个所述异形叶形成的夹角不大于72°，即相邻2个异形叶的中心线夹角为72°，这样沟槽呈锐角，沟槽较深，而且沟槽宽度小，使得涤纶长丝具有毛细管芯吸效应，明显提升芯吸透湿能力。As shown in Figures 1 to 5, in some specific embodiments, the angle formed by two adjacent special-shaped leaves is not greater than 72°, that is, the included angle between the center lines of two adjacent special-shaped leaves is 72°. In this way, the grooves are at an acute angle, the grooves are deep, and the groove width is small, so that the polyester filament has a capillary wicking effect, which significantly improves the wicking and moisture permeability.
进一步的，异形叶的数量为5叶或6叶或7叶或8叶，相对应形成的具有毛细管芯吸效应的沟槽数量为5个或6个或7个或8个，叶数越多，沟槽数量越多，且夹角越小，毛细管芯吸效应就越好，集约芯吸效果就越突出，纤维吸水、输水、扩散效果就越好。Further, the number of special-shaped leaves is 5 leaves or 6 leaves or 7 leaves or 8 leaves, and the corresponding number of grooves with capillary wicking effect formed is 5 or 6 or 7 or 8, the greater the number of leaves. , the greater the number of grooves and the smaller the angle, the better the capillary wicking effect, the more prominent the intensive wicking effect, and the better the fiber water absorption, water transport, and diffusion effects.
如图1-图5所示，在一些具体的实施方式中，所述异形叶展开后矩形的宽度为0.06-0.12mm，所述异形叶的当量直径为0.10-0.30mm，异形叶展开的矩形宽度和异形叶的当量直径都会影响到涤纶长丝的成型和性能，当展开的矩形叶宽度小于0.06mm，喷丝板加工困难,而当量直径小于0.10mm或大于0.30mm，可纺性能变差，无法正常纺丝，因此，本发明的异形叶展开后矩形的宽度为0.06-0.12mm，异形叶的当量直径为0.10-0.30mm，这样纤维就能形成稳定的截面，成型效果更好。As shown in Figures 1 to 5, in some specific embodiments, the width of the rectangular shape of the special-shaped leaves after expansion is 0.06-0.12mm, the equivalent diameter of the special-shaped leaves is 0.10-0.30mm, and the expanded rectangular shape of the special-shaped leaves The width and the equivalent diameter of the special-shaped leaves will affect the forming and performance of the polyester filament. When the width of the expanded rectangular leaves is less than 0.06mm, the spinneret processing is difficult, and the equivalent diameter is less than 0.10mm or greater than 0.30mm, and the spinnability deteriorates. , unable to spin normally, therefore, the width of the rectangle after the special-shaped leaves of the present invention are expanded is 0.06-0.12mm, and the equivalent diameter of the special-shaped leaves is 0.10-0.30mm, so that the fiber can form a stable cross-section and the molding effect is better.
如图1-图5所示，在一些具体的实施方式中，多个所述喷丝孔2组成多个同心圆，相邻2个所述同心圆中的喷丝孔2错位设置，且错位夹角为5°-10°，以三个同心圆为例，从喷丝板本体1的中心往喷丝板本体1的外缘依序为第一圈、第二圈和第三圈，取第二圈中的1个喷丝孔2作为第一喷丝孔2a，第一喷丝孔2a的圆心与喷丝板本体1的圆心连线为第一边线，第一圈中与第一喷丝孔2a距离最近的为第二喷丝孔2b，第二喷丝孔2b的圆心与喷丝板本体1的圆心连线为第二边线，第三圈中与第一喷丝孔2a距离最近的为第三喷丝孔2c，第三喷丝孔2c的圆心与喷丝板本体1的圆心连线为第三边线，第二边线与第一边线的夹角为5°-10°，第三边线与第一边线的夹角为5°-10°，优选的，第二边线与第一边线的夹角为8°，第三边线与第一边线的夹角为8°，喷丝孔2的孔数为48孔，第一圈的喷丝孔2的孔数为8孔，第二圈的喷丝孔2的孔数为18孔，第三圈的喷丝孔2的孔数为22孔，错位设置使每一根单丝都能得到均匀充分冷却，避免丝条之间产生粘结，喷丝孔2尽量均匀布置在整个喷丝板本体1的有效纺丝区域内。 As shown in Figures 1 to 5, in some specific embodiments, a plurality of the spin holes 2 form a plurality of concentric circles, and the spin holes 2 in two adjacent concentric circles are arranged in a staggered position, and the spin holes 2 are staggered. The included angle is 5°-10°. Taking three concentric circles as an example, from the center of the spinneret body 1 to the outer edge of the spinneret body 1, the first circle, the second circle and the third circle are taken. One spin hole 2 in the second circle serves as the first spin hole 2a. The line connecting the center of the first spin hole 2a and the center of the spinneret body 1 is the first side line. The line between the first circle and the first spin hole 2 is The nearest spinneret hole 2a is the second spinneret hole 2b. The line connecting the center of the second spinneret hole 2b and the center of the spinneret plate body 1 is the second side line. The distance between the third circle and the first spinneret hole 2a is The closest one is the third spin hole 2c. The line connecting the center of the third spin hole 2c and the center of the spinneret body 1 is the third side line. The angle between the second side line and the first side line is 5°-10°. , the angle between the third side line and the first side line is 5°-10°, preferably, the angle between the second side line and the first side line is 8°, and the angle between the third side line and the first side line is 8°. °, the number of holes of spinneret 2 is 48 holes, the number of holes of spinneret 2 of the first circle is 8 holes, the number of holes of spinneret 2 of the second circle is 18 holes, and the number of holes of spinneret 2 of the third circle is 18 holes. The number of holes in 2 is 22. The staggered setting allows each single filament to be cooled evenly and fully to avoid adhesion between the filaments. The spinneret holes 2 are arranged as evenly as possible in the entire spinneret body 1 for effective spinning. within the area.​
如图1-图5所示，在一些具体的实施方式中，所述微孔202的深度H为0.40-0.60mm，微孔202的深度H影响着涤纶长丝的成型，若微孔202的深度H过小，导致熔体的弹性势能变化过大，导致截面折叠，无法通过微孔202形成有效截面，若微孔202的深度H过大，对喷丝板的背压造成不利影响，熔体的挤压效果差，因此微孔202的深度H为0.40-0.60mm，成型效果好。As shown in Figures 1 to 5, in some specific embodiments, the depth H of the micropores 202 is 0.40-0.60mm. The depth H of the micropores 202 affects the forming of the polyester filament. If the depth H of the micropores 202 If the depth H is too small, the elastic potential energy of the melt changes too much, causing the cross-section to fold, and an effective cross-section cannot be formed through the micropores 202. If the depth H of the micropores 202 is too large, it will adversely affect the back pressure of the spinneret and melt the melt. The extrusion effect of the body is poor, so the depth H of the micropores 202 is 0.40-0.60mm, and the molding effect is good.
如图1-图5所示，在一些具体的实施方式中，涤纶长丝由本发明的多叶中空涤纶长丝喷丝板制得，喷丝孔2的孔数为12-72孔，涤纶长丝的线密度为30-167dtex，其单丝线密度1.0-4.5dtex。As shown in Figures 1 to 5, in some specific embodiments, the polyester filament is made from the multi-leaf hollow polyester filament spinneret of the present invention. The number of spinneret holes 2 is 12-72 holes, and the polyester filament is long. The linear density of the wire is 30-167dtex, and the linear density of the single wire is 1.0-4.5dtex.
在本公开一个具体的实施例中披露一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，其包括喷丝板本体1、5个设置在喷丝板本体1上的喷丝孔2，5个喷丝孔2以喷丝板本体1的轴线为圆心形成3个同心圆，3个同心圆从喷丝板的中心向其外缘依序分别为第一圈、第二圈和第三圈，第一圈的喷丝孔2的孔数为8孔，第二圈的喷丝孔2的孔数为18孔，第三圈的喷丝孔2的孔数为22孔，喷丝孔2包括带有90°锥孔的圆柱形导孔201、与导孔201相通的微孔202，微孔202包括5个以环形阵列方式组合的异形叶，异形叶包括依序连通的长边叶2021、半圆弧叶2022和短边叶2023，长边叶2021与短边叶2023平行设置，其中1个短边叶2023的头端朝向与其相邻的最近的异形叶中长边叶2021的外侧面，且两者之间设有间隙C，异形叶中所有半圆弧叶2022的内凹面指向异形叶围成的微孔202的中心，微孔202中其中一个异形叶的半圆弧叶2022的内凹面指向喷丝板本体1的圆心，相邻2个异形叶形成的夹角为72°，间隙C的宽度为0.13mm，异形叶展开后矩形的宽度为0.12mm，异形叶的当量直径为0.30mm，异形叶的中空度为66%，微孔203的深度H为0.60mm。In a specific embodiment of the present disclosure, a spinneret for producing multi-acute grooved multi-leaf hollow polyester filaments is disclosed, which includes a spinneret body 1 and five spinnerets arranged on the spinneret body 1 Hole 2, 5 spinneret holes 2 form 3 concentric circles with the axis of the spinneret body 1 as the center. The three concentric circles are the first circle and the second circle in sequence from the center of the spinneret to the outer edge. and the third circle, the number of holes of spinneret 2 in the first circle is 8 holes, the number of holes of spinneret 2 in the second circle is 18 holes, and the number of holes of spinneret 2 in the third circle is 22 holes. The spinneret 2 includes a cylindrical guide hole 201 with a 90° tapered hole, and a microhole 202 connected with the guide hole 201. The microhole 202 includes 5 special-shaped leaves assembled in an annular array, and the special-shaped leaves include sequentially connected Long side leaves 2021, semi-circular arc leaves 2022 and short side leaves 2023. The long side leaves 2021 and the short side leaves 2023 are arranged in parallel, and the head end of one short side leaf 2023 faces the long side of the nearest special-shaped leaf adjacent to it. The outer side of the leaf 2021, and there is a gap C between them. The inner concave surfaces of all the semi-circular arc leaves 2022 in the special-shaped leaves point to the center of the micropores 202 surrounded by the special-shaped leaves. The half of one of the special-shaped leaves in the micropores 202 The inner concave surface of the arc blade 2022 points to the center of the spinneret body 1. The angle formed by two adjacent special-shaped blades is 72°. The width of the gap C is 0.13mm. The width of the rectangle after the special-shaped blades are expanded is 0.12mm. The equivalent diameter of the leaf is 0.30mm, the hollowness of the special-shaped leaf is 66%, and the depth H of the micropore 203 is 0.60mm.
利用实施例中的喷丝板制得涤纶长丝，产品规格为83dtex/50f，即总线密度为83分特，由50根单丝组成涤纶中空长丝，折算单丝线密度为1.66dtex，纤维截面呈现5叶5个锐角沟槽，此涤纶长丝制成的纺织面料，能够将人体皮肤表面的湿气快速转移出去，而中空的纤维结构不仅使纺织面料轻量化，手感柔软有弹性，还使得空气能够穿透中空纤维层，使空气流动增强，进而促进蒸汽降温最大化，其协同作用使纺织面料达到较好的湿热舒适管理效果。The polyester filament is produced using the spinneret in the embodiment. The product specification is 83dtex/50f, that is, the total linear density is 83 decitex. The polyester hollow filament is composed of 50 monofilaments. The converted monofilament linear density is 1.66dtex. The fiber cross-section Presenting 5 leaves and 5 acute-angled grooves, this textile fabric made of polyester filament can quickly transfer moisture from the surface of human skin. The hollow fiber structure not only makes the textile fabric lightweight, soft and elastic to the touch, but also makes Air can penetrate the hollow fiber layer to enhance air flow, thereby maximizing steam cooling. The synergistic effect allows the textile fabric to achieve better heat and humidity comfort management.
上述实施例仅仅是为清楚地说明本发明所作的描述，而并非对实施方式的限定，对于所属领域的技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动，这里无需也无法对所有的实施方式予以穷举，而由此所引申出的显而易见的变化或变动仍处于本发明的保护范围之中。The above embodiments are only descriptions for clearly illustrating the present invention, and are not intended to limit the implementation. For those skilled in the art, other changes or changes in different forms can be made based on the above descriptions. It is not necessary and impossible to exhaustively enumerate all implementations, and obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims (10)

  1.  一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，其特征在于，包括喷丝板本体、多个设置在喷丝板本体上的喷丝孔，多个所述喷丝孔以所述喷丝板本体的轴线为圆心呈数组同心圆环状排布，所述喷丝孔包括带有90°锥孔的圆柱形导孔、与导孔相通的微孔，所述微孔由多个异形叶以环形阵列方式组合而成，相邻2个所述异形叶的夹角为锐角，所述异形叶包括依序连通的长边叶、半圆弧叶和短边叶。A spinneret for producing multi-acute grooved and multi-leaf hollow polyester filaments, which is characterized in that it includes a spinneret body, a plurality of spinneret holes arranged on the spinneret body, and a plurality of said spinneret holes. The spinneret body is arranged in an array of concentric rings with the axis of the spinneret body as the center. The spinneret holes include a cylindrical guide hole with a 90° tapered hole and micropores connected with the guide hole. The micropores It is composed of a plurality of special-shaped leaves assembled in an annular array, and the angle between two adjacent special-shaped leaves is an acute angle. The special-shaped leaves include sequentially connected long-side leaves, semi-circular arc leaves, and short-side leaves.
  2.  根据权利要求1所述的一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，其特征在于，每个所述异形叶其长边叶与短边叶平行设置，且其中1个所述短边叶的头端朝向与其相邻最近的异形叶中长边叶的外侧面，且两者之间设有间隙。A spinneret for producing multi-acute grooved multi-leaf hollow polyester filaments according to claim 1, characterized in that the long side leaves and short side leaves of each special-shaped leaf are arranged in parallel, and wherein 1 The head end of each of the short-side leaves faces the outer surface of the long-side leaf in the nearest adjacent special-shaped leaf, and there is a gap between the two.
  3.  根据权利要求2所述的一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，其特征在于，所述异形叶中所有半圆弧叶的内凹面指向所述异形叶围成的微孔的中心，所述微孔中其中一个异形叶的半圆弧叶的内凹面指向喷丝板本体的圆心。A spinneret for producing multi-acute grooved multi-leaf hollow polyester filament spinnerets according to claim 2, characterized in that the concave surfaces of all semi-circular arc leaves in the special-shaped leaves point toward the special-shaped leaves. The center of the microhole, the inner concave surface of the semicircular arc leaf of one of the special-shaped leaves in the microhole points to the center of the spinneret body.
  4.  根据权利要求2所述的一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，其特征在于，所述间隙的宽度为0.09-0.13mm。A spinneret for producing multi-acute grooved multi-leaf hollow polyester filaments according to claim 2, characterized in that the width of the gap is 0.09-0.13mm.
  5.  根据权利要求1所述的一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，其特征在于，所述异形叶的数量为5至8叶，相对应形成的具有毛细管芯吸效应的沟槽数量为5至8个。A spinneret for producing multi-acute grooved multi-leaf hollow polyester filaments according to claim 1, characterized in that the number of the special-shaped leaves is 5 to 8 leaves, and the corresponding formed ones have capillary wicking The number of effect grooves is 5 to 8.
  6.  根据权利要求1所述的一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，其特征在于，相邻2个所述异形叶形成的夹角不大于72°。A spinneret for producing multi-acute grooved multi-leaf hollow polyester filament spinnerets according to claim 1, characterized in that the angle formed by two adjacent special-shaped leaves is not greater than 72°.
  7.  根据权利要求1所述的一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，其特征在于，所述异形叶围成的微孔的理论中空度不小于65%。A spinneret for producing multi-acute groove multi-leaf hollow polyester filament spinneret according to claim 1, characterized in that the theoretical hollowness of the micropores surrounded by the special-shaped leaves is not less than 65%.
  8.  根据权利要求1所述的一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，其特征在于，所述异形叶展开后矩形的宽度为0.06-0.12mm，所述异形叶的当量直径为0.10-0.30mm。A spinneret for producing multi-acute grooved multi-leaf hollow polyester filaments according to claim 1, characterized in that the width of the rectangular shape of the special-shaped leaves after expansion is 0.06-0.12 mm, and the width of the special-shaped leaves is 0.06-0.12 mm. The equivalent diameter is 0.10-0.30mm.
  9.  根据权利要求1所述的一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，其特征在于，所述微孔的加工深度为0.40-0.60mm。A spinneret for producing multi-acute grooved multi-leaf hollow polyester filaments according to claim 1, characterized in that the processing depth of the micropores is 0.40-0.60mm.
  10.  根据权利要求1所述的一种用于生产多锐角沟槽多叶中空涤纶长丝喷丝板，其特征在于，多个所述喷丝孔分布在数组同心圆上并在同一个同心圆上均布排列，相邻2个所述同心圆中的喷丝孔错位设置，错位夹角为5°-10°。A spinneret for producing multi-acute grooved multi-leaf hollow polyester filaments according to claim 1, characterized in that a plurality of the spinneret holes are distributed in an array of concentric circles and on the same concentric circle. Arranged uniformly, the spinneret holes in two adjacent concentric circles are dislocated, and the dislocation angle is 5°-10°.
PCT/CN2023/099233 2022-06-23 2023-06-08 Spinneret plate for producing hollow polyester filaments having multiple acute-angled grooves and multiple leaves WO2023237069A1 (en)

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