CN111676527A - Method for manufacturing one-plate double-bundle superfine denier polyester pre-oriented yarn - Google Patents
Method for manufacturing one-plate double-bundle superfine denier polyester pre-oriented yarn Download PDFInfo
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- CN111676527A CN111676527A CN202010501310.7A CN202010501310A CN111676527A CN 111676527 A CN111676527 A CN 111676527A CN 202010501310 A CN202010501310 A CN 202010501310A CN 111676527 A CN111676527 A CN 111676527A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 46
- 229920000728 polyester Polymers 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000009987 spinning Methods 0.000 claims abstract description 105
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 239000000155 melt Substances 0.000 claims abstract description 13
- 229920004933 Terylene® Polymers 0.000 claims abstract description 9
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 9
- 238000007664 blowing Methods 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000835 fiber Substances 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 5
- 238000010008 shearing Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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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
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/02—Spinnerettes
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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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
- D01D1/09—Control of pressure, temperature or feeding rate
-
- 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
- D01D4/00—Spinnerette packs; Cleaning thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention relates to a method for manufacturing single-plate double-bundle superfine denier polyester pre-oriented yarns, which is characterized in that single-plate double-bundle equipment is adopted to manufacture the superfine denier polyester pre-oriented yarns, the temperature of a spinning assembly and the surface of a spinneret plate is controlled to be 300-310 ℃, the height of a windless area is controlled to be 30-40 mm, and the single-plate double-bundle superfine denier polyester pre-oriented yarns are manufactured, wherein the single-plate double-bundle means that a plurality of monofilaments formed after a melt is subjected to spinning and cooling through the spinneret plate are averagely divided into two bundles of yarns, and the arrangement density of spinneret holes on the spinneret plate in the single-plate double-bundle equipment is more than 4.2The temperature of the spinning assembly and the spinneret plate surface is controlled to be 300-310 ℃, a heating plate is wrapped outside the lower end of the spinning assembly, and the height of a windless area is controlled to be 30-40 mm, and the joint of the spinning assembly is lengthened. The invention realizes the smooth manufacture of the one-plate double-bundle superfine denier terylene pre-oriented yarnTherefore, the single-plate single-beam process production in the prior art is generally 10-12 heads/spinning positions, while the superfine denier produced by the single-plate two-beam process is 24 heads/spinning positions, which is far beyond the prior art.
Description
Technical Field
The invention belongs to the technical field of spinning, and relates to a method for manufacturing a one-plate double-bundle superfine denier terylene pre-oriented yarn.
Background
At present, along withThe technical progress of chemical fiber equipment, high-efficiency production become the competitive advantage option of the industry, the production of the superfine denier terylene pre-oriented yarn is only limited on the basis of the equipment of the original process design of single veneer and single beam at present, the conventional fiber in the prior polyester filament industry is produced by using two beams in one plate, the filament number of the conventional fiber is large, the spinning and stretching are low in the spinning process, and meanwhile, the shearing rate is reasonable, so that the production can be basically carried out as long as the plate surface temperature and the cooling mode meet the conventional requirements. Compared with conventional fiber, the melt nozzle drawing and shearing rate is greatly increased when spinning superfine fiber, the total number of holes of the spinneret plate is increased by times due to the design of one spinneret plate and two beams, the arrangement density of the spinneret holes exceeds the production requirement of polyester filament, and document 1 (Wangshenju, Yuanhua, high-speed spinning drawing deformation process and equipment [ M)]Beijing, textile industry Press, 1987,33-34.) explicitly states that the arrangement density of spinneret holes in the production process of polyester filaments should be less than 4.0 holes/cm2If the melt does not have good fluidity and quick and uniform cooling conditions in the spinning process, the melt macromolecules are easy to break under the conditions of high stretching and high shearing, and the cooling uniformity can not be ensured, so that the spinning broken ends are difficult to spin and the titer of the product is uneven.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a method for manufacturing one-plate double-bundle superfine denier terylene pre-oriented yarns.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a one-plate two-bundle manufacturing method of superfine denier polyester pre-oriented yarns is characterized in that one-plate two-bundle equipment is adopted to manufacture the superfine denier polyester pre-oriented yarns, the temperature of a spinning assembly and the surface of a spinneret plate is controlled to be 300-310 ℃, the height of a windless area is controlled to be 30-40 mm, and the one-plate two-bundle superfine denier polyester pre-oriented yarns are manufactured, wherein the one-plate two-bundle means that a plurality of monofilaments formed after a melt is subjected to spinning and cooling through one spinneret plate are averagely divided into a left bundle of yarns and a right bundle of yarns, and the arrangement density of spinneret holes on the spinneret plate in the one-plate two-bundle equipment2The main difference between the one-plate two-beam equipment and the one-plate single-beam equipment is the spinneret plate and the one-plate single-beam equipmentThe spinneret orifices on the spinneret plate in the beam equipment are uniformly distributed, the spinneret orifices in the one-plate double-beam equipment are distributed in two areas, a separation area without the spinneret orifices exists between the two areas, the two separation areas respectively correspond to two separated melt cavities and melt channels of the component, and the melt can be separated into two parts to produce two beams of filaments after passing through the spinneret plate; the finally prepared superfine denier terylene pre-oriented yarn has the specification of 56 dtex-70 dtex/144f (corresponding to 30D-40D/144 f terylene false twist textured yarn with the monofilament fineness of less than 0.33 dtex), the linear density deviation rate of 0.35-0.50%, the linear density variation coefficient of 0.20-0.37%, the breaking strength of 2.62-2.71 cN/dtex, the breaking strength variation coefficient of 2.31-2.89%, the breaking elongation of 125.4-127.1%, the breaking elongation variation coefficient of 1.66-2.91%, the yarn evenness rate of 0.60-0.71% and the oil content of 0.51-0.53%.
The invention mechanism is as follows: when the single-plate double-beam equipment is adopted to manufacture the superfine denier polyester pre-oriented yarn, the stretching and shearing speed of a melt nozzle is greatly increased, the arrangement density of spinneret orifices is increased because of the design of two beams of one spinneret plate, if the melt does not have good fluidity and quick and uniform cooling conditions in the spinning process, the melt macromolecules are easy to break under the conditions of high stretching and high shearing, the cooling uniformity cannot be ensured, the broken ends of the spinning are difficult to spin and the fineness of the product is not uniform, according to the characteristic of higher orientation degree of a superfine fiber spinning structure, the production can be realized only by simultaneously meeting the two conditions of high temperature (good melt fluidity) and quick cooling (quick forming) of the spinning assembly and the spinneret plate surface in the spinning process, the temperature of the spinning assembly and the spinneret plate surface is controlled to be 300-310 ℃, which is higher than that of the prior art (the temperature of the spinning assembly and the spinneret plate surface is 280-295 ℃) when the superfine denier polyester pre-oriented yarn is manufactured by, the method improves the fluidity of the polyester melt, ensures that the polyester melt has good fluidity and drawing performance which must be met by the melt when producing the superfine denier yarn, controls the height of the airless area to be 30-40 mm, is lower than that of the prior art (the height of the airless area is 60-100 mm when producing the superfine denier polyester pre-oriented yarn in the prior art), improves the cooling speed, ensures that the polyester melt can be rapidly and uniformly cooled after being sprayed out from the assembly micropores, and ensures the smooth spinning of the one-plate double-bundle superfine denier polyester pre-oriented yarn.
As a preferred technical scheme:
according to the manufacturing method of the single-plate double-bundle superfine denier polyester pre-oriented yarn, the temperatures of the spinning assembly and the spinneret plate surface are controlled to be 300-310 ℃, a heating plate is wrapped outside the lower end of the spinning assembly, in the prior art, the heating plate is generally added below the spinning assembly in an externally hanging mode, the plate surface temperature of the spinneret plate is improved in a heat radiation mode, the melt temperature increasing effect is limited, the heating plate is moved and reset during each spinning operation, and is easily polluted by melt residues and easily damaged; the heating plate consists of a heat conducting plate and a resistance wire cast in the heat conducting plate, the heat conducting plate is provided with a through hole for the spinning assembly to insert, and the resistance wire surrounds the through hole.
According to the manufacturing method of the one-plate double-bundle superfine denier polyester pre-oriented yarn, the heating plate is positioned above the box body bottom plate and is fixedly connected with the spinning box body, and the heating plate is fixed on the spinning box body by using the lengthened bolts through the mounting holes of the spinning box body and the box body bottom plate.
According to the manufacturing method of the one-plate double-bundle superfine denier polyester pre-oriented yarn, the thickness of the heat conducting plate is 20-25 mm, the distance between the lower plate surface of the heating plate and the lower end of the spinning assembly is 15-20 mm, the power of the heating plate is 2.5-3.5 Kw.hr, the temperatures of the spinning assembly and the spinneret plate surface are kept to be 300-310 ℃ according to spinning experiments, and under the condition that the heating power consumption is 50-80%, the heating power of the heating plate is designed to be 2.5-3.5 Kw.hr.
According to the manufacturing method of the one-plate double-bundle superfine denier polyester pre-oriented yarn, a plurality of spinning assemblies at the same spinning position share one heating plate; the number of the through holes is equal to that of the spinning assemblies at the same spinning position; the arrangement mode of the through holes is the same as that of the spinning components at the same spinning position; the resistance wire surrounds all the through holes to form a closed area, and all the through holes are located in the closed area.
According to the manufacturing method of the one-plate double-bundle superfine denier polyester pre-oriented yarn, the heat conduction plate is a pure aluminum plate with the purity of more than 99.00 percent, and the pure aluminum plate has excellent heat conduction performance, so that the pure aluminum plate is the preferred heating plate material of the invention, the resistance wire is a 0Gr25AI5 alloy resistance wire, the heating use temperature of the 0Gr25AI5 alloy material reaches 850 ℃, and the heating process requirements of the heating plate are completely met.
According to the manufacturing method of the one-plate double-bundle super-fine denier polyester pre-oriented yarn, the heat conduction plate is a rectangular plate, all the through holes are arranged along the length direction of the heat conduction plate and are arranged into two rows or more, and the through holes in two adjacent rows are arranged in a staggered manner along the width direction of the heat conduction plate.
According to the manufacturing method of the one-plate double-bundle superfine denier polyester pre-oriented yarn, the inner diameters of the through holes of the heating plates are designed to be matched with the center of the assembly and the outer circle of the assembly, the deviation between the center of the through hole and the center of the corresponding spinning assembly is smaller than 1mm, and the aperture of the through hole is 5-6 mm larger than the outer diameter of the corresponding spinning assembly.
According to the manufacturing method of the single-plate double-bundle superfine denier polyester pre-oriented yarn, the height of the airless area is controlled to be 30-40 mm, the mode of lengthening the spinning assembly joint is adopted, the lengthened length of the spinning assembly joint is 55-65 mm, and the length of the spinning assembly joint in the prior art is 25-35 mm, compared with the prior art, the length of the spinning assembly joint is prolonged by about 30mm, the distance between the spinneret plate surface and the air blowing cooling surface (namely the height of the airless area) is reduced, namely the space from the spinneret plate surface to the high-temperature air medium in the middle of air blowing cooling is shortened, and the purpose of rapidly and uniformly cooling a high-temperature melt is achieved.
According to the manufacturing method of the one-plate double-bundle superfine denier polyester pre-oriented yarn, the manufacturing process parameters of the superfine denier polyester pre-oriented yarn are as follows: the spinning temperature is 290-295 ℃, the spinning speed is 2500-2550 m/min, the pressure of a component is 170-190 bar, the blowing cooling temperature is 18-20 ℃, the cooling air humidity is 65-85%, and the cooling air speed is 0.30-0.35 m/s.
Has the advantages that:
according to the invention, the temperatures of the spinning assembly and the spinneret plate surface are controlled to be 300-310 ℃, the height of the airless zone is controlled to be 30-40 mm, the smooth manufacturing of the one-plate double-bundle superfine denier polyester pre-oriented yarn is realized, the single-plate single-bundle process production in the prior art is generally 10-12 ends per spinning position, and the superfine denier produced by the one-plate double-bundle process is 24 ends per spinning position, which is far beyond the prior art.
Compared with the single-plate single-beam superfine denier production method in the prior art, the single-plate single-beam superfine denier production method mainly shows that the energy efficiency of the latter is twice that of the former, and the one-plate double-beam process method greatly reduces the production cost of superfine products and greatly improves the cost competitiveness of the products.
Drawings
FIG. 1 is a schematic view of the construction of a spinning beam and its components;
FIG. 2 is a schematic diagram of the internal structure of the spinning beam;
FIG. 3 is a distribution diagram of the spinneret plate surface of the bottom plate of the box body;
FIG. 4 is a schematic view of a heating plate;
FIG. 5 is a schematic view of a resistance wire;
FIG. 6 is a schematic view of a spin pack assembly joint;
the spinning device comprises a spinning box body 1, a spinning assembly 2, a spinneret plate 3, a heating plate 4, a windless area adjusting plate 5, an air bellow 6, an air inlet net 7, a spinning assembly connector 8, a box body bottom plate 9 and a resistance wire 10.
All dimensions in the figure are in mm.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
A method for manufacturing a one-plate double-bundle superfine denier polyester pre-oriented yarn comprises the steps of manufacturing the superfine denier polyester pre-oriented yarn by adopting one-plate double-bundle equipment shown in figures 1-3 and 6, controlling the temperature of the surfaces of a spinning component 2 and a spinneret plate 3 to be 300-310 ℃ by externally wrapping a heating plate 4 at the lower end of the spinning component 2, controlling the height of a calm zone to be 30-40 mm by lengthening a spinning component joint 8 (the height of the calm zone can be adjusted by adjusting the thickness of a calm zone adjusting plate 5, the height of the calm zone is the distance between the surface of the spinneret plate and a blowing cooling surface, and the blowing cooling surface is the highest surface which can be reached after cooling air enters a spinning channel from an air box 6 through an air inlet net 7), so as to prepare the one-plate double-bundle superfine denier polyester pre-oriented yarn, wherein the one-plate double-bundle means that a plurality of monofilaments formed after a melt is subjected to spinning and cooling through the, the arrangement density of spinneret orifices on a spinneret plate in one-plate double-bundle equipment is more than 4.0 orifices/cm2Specifically, 288 holes are designed in one spinneret plate, the middle of the spinneret plate surface is divided into a left area and a right area which are respectively provided with 144 holes by an 8mm wide non-hole area, 288 holes are distributed in a circular area with the diameter of 93mm, and the distribution density of the spinneret holes is 4.72 holes/cm2；
As shown in fig. 4 and 5, the heating plate 4 is composed of a heat conducting plate and a resistance wire 10 cast in the heat conducting plate, the heat conducting plate is provided with a through hole for inserting the spinning assembly 2, and the resistance wire 10 surrounds the through hole;
the heating plate 4 is positioned above the box body bottom plate 9 and is fixedly connected with the spinning box body 1; the thickness of the heat conducting plate is 20-25 mm (specifically 20mm or 25mm), the distance between the lower plate surface of the heating plate 4 and the lower end of the spinning assembly 2 is 15-20 mm (specifically 15mm or 20mm), and the power of the heating plate 4 is 2.5-3.5 Kw.hr (specifically 2.5Kw.hr or 3.5 Kw.hr); a plurality of spinning assemblies 2 at the same spinning position share one heating plate 4; the number of the through holes is equal to that of the spinning assemblies 2 at the same spinning position; the arrangement mode of the through holes is the same as that of the spinning components 2 at the same spinning position; the resistance wire 10 surrounds all the through holes to form a closed area, and all the through holes are located in the closed area; the heat conducting plate is a pure aluminum plate with the purity of more than 99.00 percent, and the resistance wire 10 is a 0Gr25AI5 alloy resistance wire; the heat conducting plate is a rectangular plate, all the through holes are arranged along the length direction of the heat conducting plate and are arranged into two rows, and the through holes in two adjacent rows are staggered along the width direction of the heat conducting plate; the deviation between the center of the through hole and the center of the corresponding spinning assembly 2 is less than 1mm, and the aperture of the through hole is 5-6 mm larger than the outer diameter of the corresponding spinning assembly 2;
the lengthened length of the spinning component joint 8 is 55-65 mm (specifically 55mm or 65 mm);
the manufacturing process parameters of the superfine denier terylene pre-oriented yarn are as follows: the spinning temperature is 290-295 ℃, the spinning speed is 2500-2550 m/min, the pressure of a component is 170-190 bar, the blowing cooling temperature is 18-20 ℃, the cooling air humidity is 65-85%, and the cooling air speed is 0.30-0.35 m/s;
the finally prepared superfine denier terylene pre-oriented yarn has the specification of 56dtex to 70dtex/144f, the linear density deviation rate of 0.35 to 0.50 percent, the linear density variation coefficient of 0.20 to 0.37 percent, the breaking strength of 2.62 to 2.71cN/dtex, the breaking strength variation coefficient of 2.31 to 2.89 percent, the breaking elongation of 125.4 to 127.1 percent, the breaking elongation variation coefficient of 1.66 to 2.91 percent, the yarn unevenness of 0.60 to 0.71 percent and the oil content of 0.51 to 0.53 percent, and the specification is shown in the following table.
Other process parameters are kept unchanged, the temperature of the spinneret plate surface of the spinning assembly is adjusted to be less than 300 ℃ and more than 310 ℃ for spinning, and tests show that the spinning can not be smoothly carried out.
Other process parameters are kept unchanged, the height of the calm zone is adjusted to be less than 30mm and more than 40mm, then spinning is carried out, and tests show that spinning can not be smoothly carried out.
The comparison shows that the temperatures of the spinning assembly and the spinneret plate surface and the height of the airless zone are two key parameters for ensuring the smooth spinning of the one-plate double-bundle superfine denier polyester pre-oriented yarn, and the one-plate double-bundle superfine denier polyester pre-oriented yarn with excellent performance can be prepared only by controlling the temperatures of the spinning assembly and the spinneret plate surface to be 300-310 ℃ and controlling the height of the airless zone to be 30-40 mm.
Claims (10)
1. The manufacturing method of the one-board double-bundle superfine denier terylene pre-oriented yarn is characterized by comprising the following steps of: the method comprises the steps of manufacturing the superfine denier polyester pre-oriented yarns by adopting one-plate double-bundle equipment, controlling the temperature of a spinning assembly and the surface of a spinneret plate to be 300-310 ℃, and controlling the height of a calm zone to be 30-40 mm to prepare the one-plate double-bundle superfine denier polyester pre-oriented yarns, wherein the one-plate double-bundle means that a plurality of monofilaments formed after a melt is subjected to spinning and cooling by one spinneret plate are averagely divided into two bundles of yarns, and the arrangement density of spinneret orifices on the spinneret plate in the one-plate double-bundle equipment is more than 4.0 holes/cm2(ii) a The finally prepared superfine denier polyester pre-oriented yarn has the specification of 56dtex to 70dtex/144f, the linear density deviation rate of 0.35 to 0.50 percent, the linear density variation coefficient of 0.20 to 0.37 percent, the breaking strength of 2.62 to 2.71cN/dtex, the breaking strength variation coefficient of 2.31 to 2.89 percent, the breaking elongation of 125.4 to 127.1 percent, the breaking elongation variation coefficient of 1.66 to 2.91 percent, the yarn unevenness of 0.60 to 0.71 percent and the oil content of 0.51 to 0.53 percent.
2. The method for manufacturing the single-plate double-bundle superfine denier polyester pre-oriented yarn as claimed in claim 1, wherein the temperature of the spinning pack and the spinneret plate surface is controlled to be 300-310 ℃, and a heating plate is wrapped at the lower end of the spinning pack; the heating plate consists of a heat conducting plate and a resistance wire cast in the heat conducting plate, the heat conducting plate is provided with a through hole for the spinning assembly to insert, and the resistance wire surrounds the through hole.
3. The method for manufacturing the single-plate double-bundle superfine denier polyester pre-oriented yarn as claimed in claim 2, wherein the heating plate is located above the bottom plate of the spinning box and is fixedly connected with the spinning box.
4. The method for manufacturing the single-plate double-bundle superfine denier polyester pre-oriented yarn as claimed in claim 2, wherein the thickness of the heat conducting plate is 20 to 25mm, the distance between the lower plate surface of the heating plate and the lower end of the spinning pack is 15 to 20mm, and the power of the heating plate is 2.5 to 3.5 kw.hr.
5. The method for manufacturing the single-plate double-bundle superfine denier polyester pre-oriented yarn as claimed in claim 2, wherein a plurality of spinning assemblies at the same spinning position share a heating plate; the number of the through holes is equal to that of the spinning assemblies at the same spinning position; the arrangement mode of the through holes is the same as that of the spinning components at the same spinning position; the resistance wire surrounds all the through holes to form a closed area, and all the through holes are located in the closed area.
6. The method for manufacturing the one-plate double-bundle superfine denier polyester pre-oriented yarn as claimed in claim 5, wherein the heat conducting plate is a pure aluminum plate with the purity of more than 99.00%, and the resistance wire is a 0Gr25A15 alloy resistance wire.
7. The method of claim 5, wherein the heat conducting plate is a rectangular plate, all the through holes are arranged along the length direction of the heat conducting plate and are arranged in two or more rows, and the through holes in two adjacent rows are staggered along the width direction of the heat conducting plate.
8. The method for manufacturing the one-plate two-bundle superfine denier polyester pre-oriented yarn as claimed in claim 5, wherein the deviation between the center of the through hole and the center of the corresponding spinning assembly is less than 1mm, and the aperture of the through hole is 5-6 mm larger than the outer diameter of the corresponding spinning assembly.
9. The method for manufacturing the one-plate two-bundle superfine denier polyester pre-oriented yarn as claimed in claim 1, wherein the height of the calm zone is controlled to be 30-40 mm, a spinning assembly joint is lengthened, and the lengthened length of the spinning assembly joint is 55-65 mm.
10. The manufacturing method of the one-plate two-bundle superfine denier polyester pre-oriented yarn as claimed in claim 1, wherein the manufacturing process parameters of the superfine denier polyester pre-oriented yarn are as follows: the spinning temperature is 290-295 ℃, the spinning speed is 2500-2550 m/min, the pressure of a component is 170-190 bar, the blowing cooling temperature is 18-20 ℃, the cooling air humidity is 65-85%, and the cooling air speed is 0.30-0.35 m/s.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136630A (en) * | 2021-03-23 | 2021-07-20 | 宿迁逸达新材料有限公司 | Medium-length polyester staple fiber spinning pack and preparation method thereof |
| CN113913963A (en) * | 2021-08-20 | 2022-01-11 | 桐昆集团浙江恒通化纤有限公司 | Preparation method and production equipment of ultra-bright fine-denier flat terylene pre-oriented yarn |
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| CN101974793A (en) * | 2010-07-15 | 2011-02-16 | 嘉兴学院 | One-step spinning method of multi-difference combined yarn |
| CN104141175A (en) * | 2013-05-08 | 2014-11-12 | 江苏德力化纤有限公司 | Super-fine denier FDY (fully drawn yarn) spinning equipment and spinning process |
| CN105862152A (en) * | 2016-06-06 | 2016-08-17 | 浙江尤夫高新纤维股份有限公司 | Production method for high-speed spinning low-stretching high-modulus low-shrinkage polyester industrial filaments |
| CN108823658A (en) * | 2018-06-19 | 2018-11-16 | 新凤鸣集团湖州中石科技有限公司 | A kind of double profiled-cross-section POY fibers of terylene semi-gloss super fine denier and its production method |
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| CN113913963A (en) * | 2021-08-20 | 2022-01-11 | 桐昆集团浙江恒通化纤有限公司 | Preparation method and production equipment of ultra-bright fine-denier flat terylene pre-oriented yarn |
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