CN111235652B - Spinneret plate for producing special-shaped hollow extinction fibers - Google Patents
Spinneret plate for producing special-shaped hollow extinction fibers Download PDFInfo
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- CN111235652B CN111235652B CN202010101431.2A CN202010101431A CN111235652B CN 111235652 B CN111235652 B CN 111235652B CN 202010101431 A CN202010101431 A CN 202010101431A CN 111235652 B CN111235652 B CN 111235652B
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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
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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
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
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- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention discloses a spinneret plate for producing special-shaped hollow extinction fibers, which comprises a spinneret plate body and a plurality of spinneret orifices, wherein guide grooves which are uniformly distributed in concentric circles by taking the axis of the spinneret plate body as the center of a circle are arranged on the feeding surface of the spinneret plate body; the micropore is connected and communicated with the lower end of the guide hole, the micropore is formed by arranging four special-shaped holes in a circumferential mode, and each special-shaped hole is composed of an arc-shaped hole protruding outwards and two rectangular holes which are connected to one side, protruding outwards, of the arc-shaped hole, communicated with the arc-shaped hole and distributed in the radial direction; the radial direction of the rectangular hole points to the radial direction of the micropore. The spinneret plate can be used for spinning the special-shaped hollow extinction fiber with irregular surface, good extinction effect and good section shape retention degree.
Description
Technical Field
The invention relates to the field of chemical fiber production, in particular to a spinneret plate for producing profiled hollow extinction fibers.
Background
The spinneret plate is a product commonly used in the textile chemical fiber industry, and comprises a feeding surface and a discharging surface, wherein the feeding surface is provided with a feeding hole, and the discharging surface is provided with a discharging hole. The spinneret plate is used for converting a viscous-state polymer melt or solution into a thin flow with a specific cross section through micropores, solidifying the thin flow through a solidification medium such as air or a solidification bath to form a filament, namely, the filament enters from a feeding hole and exits through a discharging hole. The discharge hole on the common spinneret plate is circular, and the non-circular spinneret plate is called a profile spinneret plate. The special-shaped hollow fiber is a chemical fiber which is formed by extruding a spinning melt through a spinneret orifice with a special-shaped hollow shape, bonding the end parts of the spinning melt to form a hollow cavity, thinning and solidifying the hollow cavity and has a special-shaped hollow cross section shape and a special function. The mat fiber is also called mat fiber, which refers to chemical fiber with mat surface, and usually the mat agent (titanium dioxide) is added into spinning solution or melt before spinning, and the fiber is spun and formed, so that the fiber scatters light to remove the mat, thereby reducing the transparency and increasing the whiteness.
The profiled fibers with different cross-sectional shapes can be spun by utilizing the composite spinneret plate with spinneret orifices with different shapes and sizes. The cross-sectional shape of the fibers affects the performance of the yarn and fabric, and the fibers with different cross-sectional shapes have different improving effects on the yarn and fabric. The spinneret plates for producing the special-shaped hollow fibers in the market at present are mainly annular hollow, trilobal, C-shaped or eccentric hollow spinneret plates, the cross sections of the produced special-shaped hollow fibers are mainly hollow round, hollow trilobal and the like, the surface roughness of the fibers is not high, the extinction effect is not ideal, the cross sections are easy to deform into a double-layer flat belt shape under the action of stretching, bending and extruding of external force, and the moisture absorption and sweat releasing effect and the heat preservation effect of the double-layer flat belt shape are poor. A spinneret plate capable of spinning a profiled hollow extinction fiber with high surface irregularity and good cross-sectional shape retention is in urgent need of development.
Disclosure of Invention
The invention aims to provide a spinneret plate for producing profiled hollow extinction fibers, and the spun profiled hollow extinction fibers have high surface irregularity, good extinction effect and good section shape retention degree.
In order to solve the technical problem, the invention provides a spinneret plate for producing special-shaped hollow extinction fibers, which comprises a spinneret plate body and a plurality of spinneret holes, wherein the feeding surface of the spinneret plate body is provided with guide grooves which are uniformly distributed in concentric circles by taking the axis of the spinneret plate body as the center of a circle, the spinneret holes are uniformly arranged along the guide grooves and penetrate through the spinneret plate body, each spinneret hole consists of a guide hole and a micropore, the guide hole is cylindrical with a conical bottom, and the micropore is communicated with the lower end of the guide hole; the micro-holes are formed by arranging four special-shaped holes in a circumferential mode, and each special-shaped hole is composed of an arc-shaped hole protruding outwards and two rectangular holes which are communicated with one side, protruding outwards, of the arc-shaped hole and distributed in the radial direction; the radial direction of the rectangular hole points to the radial direction of the micropore.
Preferably, the feeding surface of the spinneret plate body is provided with three diversion trenches, and a first diversion trench, a second diversion trench and a third diversion trench are sequentially arranged from the outer side to the inner side of the feeding surface of the spinneret plate body.
Preferably, 12 spinneret holes are uniformly arranged along the first diversion trench, 8 spinneret holes are uniformly arranged along the second diversion trench, and 4 spinneret holes are uniformly arranged along the third diversion trench.
Preferably, the spinneret holes arranged along the first diversion trench and the second diversion trench are arranged in a staggered manner, and the spinneret holes arranged along the second diversion trench and the spinneret holes arranged along the third diversion trench are arranged in a staggered manner.
Preferably, two ends of the arc-shaped hole are arranged to be arc-shaped bulges.
Preferably, the length of a gap between two adjacent special-shaped holes is 0.05-0.07 mm.
Preferably, the width of the arc-shaped hole and the rectangular hole is 0.05-0.07 mm.
Preferably, the aperture of the micropore is 1.2-1.4 mm.
Preferably, the depth of the micropores is 0.4-0.6 mm.
Preferably, the diameter of a hollow cavity of each micropore is 0.5-0.7 mm.
Compared with the prior art, the invention has the following advantages:
the invention considers that the surface of the spun extinction fiber needs to have certain irregularity, so the designed spinneret orifice micro-holes are formed by the circumferential arrangement of four groups of special-shaped holes, and each group of special-shaped holes consists of an arc-shaped hole and two rectangular holes which are connected with the arc-shaped hole and communicated with the arc-shaped hole and are distributed in the radial direction, thus the hollow fiber with a plurality of grooves on the surface can be spun by utilizing the spinneret plate. The shape of the multi-groove is beneficial to the rapid cooling of the fiber and the shape maintenance, and for the extinction fiber, the irregular groove structure on the surface of the fiber greatly increases the diffuse reflection of light, and the light reflection performance of the fiber is further weakened. In order to obtain a complete closed hollow cavity and avoid fiber cracking of the hollow structure, the end part of the arc-shaped hole in the micropore is arranged into an arc-shaped bulge, so that the melt can be better folded and the hollow cavity can be formed when the melt expands after being extruded.
Drawings
FIG. 1 is a top view of a spinneret plate according to the present invention;
fig. 2 is a bottom view of a spinneret plate according to the present invention;
FIG. 3 is a cross-sectional view of the spinneret orifice of the present invention at the plane A-A' shown in FIG. 1;
FIG. 4 is a schematic cross-sectional view of the micro-holes in the spinneret hole of the present invention;
FIG. 5 is a schematic cross-sectional view of a fully-dull polyester fiber provided by an embodiment of the present invention; [1]
reference numerals: 1. a spinneret plate body; 2. feeding surface; 3. a spinneret orifice; 4. a first diversion trench; 5. a second guiding gutter; 6. a third guiding gutter; 31. a guide hole; 32. micropores; 321. an arc-shaped hole; 322. a rectangular hole; 323. an end portion; a. the hole depth; b. a gap length; c. the diameter of the hollow cavity; d. the diameter of the hole; e. width.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the present invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the present invention and is not intended to limit the scope of the claims which follow.
All of the starting materials of the present invention, without particular limitation as to their source, may be purchased commercially or prepared according to conventional methods well known to those skilled in the art.
The invention provides a spinneret plate for producing special-shaped hollow extinction fibers, which is shown in a figure 1 and a figure 2 and comprises a spinneret plate body 1 and a plurality of spinneret orifices 3, wherein guide grooves which are uniformly distributed in concentric circles by taking the axis of the spinneret plate body 1 as the center of a circle are arranged on a feeding surface 2 of the spinneret plate body 1, and the spinneret orifices 3 are uniformly arranged along the guide grooves and penetrate through the spinneret plate body 1. In consideration of the requirements of the spinneret plate on the convenience in processing and forming, the melt cooling effect in the spinning process and the like, in the invention, the flow guide grooves preferably have three paths, and a first flow guide groove 4, a second flow guide groove 5 and a third flow guide groove 6 are sequentially arranged from the outer side to the inner side of the feeding surface 2 of the spinneret plate body 1; preferably, 12 spinneret holes are uniformly arranged along the first guide groove 4, 8 spinneret holes are preferably uniformly arranged along the second guide groove 5, and 4 spinneret holes are preferably uniformly arranged along the third guide groove 6. In order to sufficiently cool the fibers and avoid bonding between the fibers, it is preferable that the spinneret holes arranged along the first guiding grooves 4 and the second guiding grooves 5 are arranged in a staggered manner, and the spinneret holes arranged along the second guiding grooves 5 and the spinneret holes arranged along the third guiding grooves 6 are arranged in a staggered manner.
As shown in fig. 3, the spinneret hole 3 is composed of a guide hole 31 and a micropore 32, wherein the guide hole 31 is cylindrical with a conical bottom, and the micropore 32 is connected to the lower end of the guide hole 31 and communicates with the guide hole 31. As shown in fig. 4, the micro-holes 32 are formed by four shaped holes arranged circumferentially, each shaped hole is composed of an arc-shaped hole 321 protruding outwards and two rectangular holes 322 radially distributed and communicated with the side of the arc-shaped hole 321 protruding outwards, and the radial direction of the rectangular holes 322 points to the radial direction of the micro-holes 32. In the present invention, in order to obtain a complete closed hollow cavity and avoid fiber cracking of the hollow structure, the two ends 323 of the arc-shaped hole 321 are preferably arranged in an arc-shaped protrusion.
The melt is guided by the guide groove and flows through the guide hole 31 and the micropores 32 of the spinneret orifice 3 in sequence, and finally extruded to form special-shaped melt, the special-shaped melt is expanded, the end part of the special-shaped melt is bonded to form a hollow cavity, and the hollow fiber is formed after refining and solidification. In the present invention, the main parameters affecting the morphology of micropores 32 are: the hole depth a of the micropore, the gap length b between two adjacent special-shaped holes, the hollow cavity diameter c of the micropore, the aperture d of the micropore, the width e of the arc-shaped hole and the rectangular hole and the like. The parameters directly influence the formation of the hollow cavity in the fiber and the final shape of the fiber, and when a, b, c, d and e are all larger, the fiber is badly formed, and even the fiber cracks; when a, b, c, d and e are all smaller, the fiber forming is not ideal, and the fiber is represented by good single fiber closing, small hollow cavity, obviously reduced hollow degree, low fiber shape retention degree and easy deformation.
In comprehensive consideration, in the invention, the hole depth a of the micro-hole 32 is preferably 0.4-0.6 mm, the gap length b between two adjacent special-shaped holes is preferably 0.05-0.07 mm, the hollow cavity diameter c of the micro-hole 32 is preferably 0.5-0.7 mm, the aperture d of the micro-hole 32 is preferably 1.2-1.4 mm, and the width e of the arc-shaped hole 321 and the rectangular hole 322 is preferably 0.05-0.07 mm.
In the preferred embodiment of the present invention, the angle of the conical bottom of the guide hole 31 is 60 ℃, the diameter of the spinneret plate is 64mm, the thickness is 15mm, a =0.5mm, b =0.06mm, c =0.6mm, d =0.3mm, e =0.06 mm.
To further illustrate the present invention, a spinneret for producing shaped hollow extinction fibers according to the present invention is described in detail below with reference to preferred embodiments.
Examples
The full-dull polyester melt with the titanium dioxide content of 3.1wt% is conveyed to a 290 ℃ spinning box, spinning is carried out through a spinneret plate, and the full-dull polyester fiber is obtained through circular blowing cooling, oiling through an oil nozzle, hot roller drafting, networking by a network device and winding by a winding machine. The cross-sectional shape of the fully-dull polyester fiber of this example was photographed with an industrial microscope CX40M SDPTOP, and at 50-fold magnification, the cross-sectional shape of the fully-dull polyester fiber of this example is shown in fig. 5. As can be seen from FIG. 5, the full-dull polyester fiber spun by the spinneret plate has an eight-lobe hollow structure, the structure of a plurality of grooves on the surface of the full-dull polyester fiber can greatly enhance the diffuse reflection of light, improve the dull effect of the full-dull polyester fiber, and the shape retention degree of the full-dull polyester fiber is high.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The applicant further states that the present invention is described by the above embodiments to realize the method and the device structure of the present invention, but the present invention is not limited to the above embodiments, and all the ways of realizing the object of the present invention by using the structure and the method similar to the present invention are within the protection scope of the present invention.
Claims (4)
1. The utility model provides a spinneret for producing dysmorphism hollow extinction fibre, includes spinneret body (1) and a plurality of spinneret orifice (3), its characterized in that: the spinneret plate comprises a spinneret plate body (1), wherein a feeding surface (2) of the spinneret plate body (1) is provided with guide grooves which are uniformly distributed in a concentric circle by taking the axis of the spinneret plate body (1) as the center of a circle, a plurality of spinneret orifices (3) are uniformly arranged along the guide grooves and penetrate through the spinneret plate body (1), each spinneret orifice (3) consists of a guide hole (31) and a micropore (32), each guide hole (31) is cylindrical with a conical bottom, and each micropore (32) is communicated with the lower end of each guide hole (31); the micro-holes (32) are formed by arranging four special-shaped holes in a circumferential mode, each special-shaped hole is composed of an arc-shaped hole (321) protruding outwards and two rectangular holes (322) which are communicated with one side, protruding outwards, of the arc-shaped hole (321) and distributed in the radial direction; the radial direction of the rectangular hole (322) points to the radial direction of the micropore (32);
two ends of the arc-shaped hole (321) are arranged to be arc-shaped bulges;
the widths of the arc-shaped holes (321) and the rectangular holes (322) are 0.05-0.07 mm; the aperture of the micropore (32) is 1.2-1.4 mm; the depth of the micropores (32) is 0.4-0.6 mm; the diameter of the hollow cavity of the micropore (32) is 0.5-0.7 mm.
2. A spinneret plate for producing shaped hollow extinction fibers according to claim 1, wherein: three diversion trenches are arranged on the feeding surface (2) of the spinneret plate body (1), and a first diversion trench (4), a second diversion trench (5) and a third diversion trench (6) are sequentially arranged from the outer side to the inner side of the feeding surface (2) of the spinneret plate body (1); the spinneret orifices arranged along the first diversion trench (4) and the second diversion trench (5) are arranged in a staggered manner, and the spinneret orifices arranged along the second diversion trench (5) and the spinneret orifices arranged along the third diversion trench (6) are arranged in a staggered manner.
3. A spinneret plate for producing shaped hollow extinction fibers according to claim 2, wherein: and 12 spinneret holes are uniformly formed along the first guide groove (4), 8 spinneret holes are uniformly formed along the second guide groove (5), and 4 spinneret holes are uniformly formed along the third guide groove (6).
4. A spinneret plate for producing shaped hollow extinction fibers according to claim 1, wherein: the length of a gap between every two adjacent special-shaped holes is 0.05-0.07 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010101431.2A CN111235652B (en) | 2020-02-19 | 2020-02-19 | Spinneret plate for producing special-shaped hollow extinction fibers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010101431.2A CN111235652B (en) | 2020-02-19 | 2020-02-19 | Spinneret plate for producing special-shaped hollow extinction fibers |
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| Publication Number | Publication Date |
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| CN111235652A CN111235652A (en) | 2020-06-05 |
| CN111235652B true CN111235652B (en) | 2021-03-16 |
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| CN202010101431.2A Active CN111235652B (en) | 2020-02-19 | 2020-02-19 | Spinneret plate for producing special-shaped hollow extinction fibers |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115012049A (en) * | 2022-05-19 | 2022-09-06 | 张家港江苏科技大学产业技术研究院 | Hollow fiber and processing equipment and processing method thereof |
| CN114855289B (en) * | 2022-06-23 | 2023-04-11 | 江苏恒科新材料有限公司 | Spinneret plate for producing multi-blade hollow polyester filament yarns with multi-acute-angle grooves |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203487284U (en) * | 2013-09-29 | 2014-03-19 | 扬州瑞辉化纤制品有限公司 | Industrial yarn spinning spinneret plate |
| CN207793490U (en) * | 2017-12-26 | 2018-08-31 | 邵阳纺织机械有限责任公司 | A kind of spinneret of novel three c-types wire hole |
| CN209873195U (en) * | 2019-03-06 | 2019-12-31 | 浦江德工精密机械有限公司 | Full-dull hollow spinneret plate with special-shaped outlet |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05214607A (en) * | 1992-02-03 | 1993-08-24 | Toray Ind Inc | Production of conjugate fiber of inner and outer layers |
| KR20060077867A (en) * | 2004-12-31 | 2006-07-05 | 주식회사 효성 | Nylon hollow fiber with property of easy water repellent finishing and its manufacturing method |
| CN202359243U (en) * | 2011-11-10 | 2012-08-01 | 苏州龙杰特种纤维股份有限公司 | Spinneret plate for producing hollow fibers |
| CN202717885U (en) * | 2012-04-13 | 2013-02-06 | 常州纺兴精密机械有限公司 | Profile-hole spinneret plate |
| CN202744672U (en) * | 2012-08-31 | 2013-02-20 | 福建百宏聚纤科技实业有限公司 | Hexaphyllous hollow fiber and spinneret plate thereof |
| CN203307490U (en) * | 2013-03-20 | 2013-11-27 | 浙江恒逸高新材料有限公司 | Spinneret plate structure for producing matte eight-leaf polyester fibers |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203487284U (en) * | 2013-09-29 | 2014-03-19 | 扬州瑞辉化纤制品有限公司 | Industrial yarn spinning spinneret plate |
| CN207793490U (en) * | 2017-12-26 | 2018-08-31 | 邵阳纺织机械有限责任公司 | A kind of spinneret of novel three c-types wire hole |
| CN209873195U (en) * | 2019-03-06 | 2019-12-31 | 浦江德工精密机械有限公司 | Full-dull hollow spinneret plate with special-shaped outlet |
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