CN103469326A - Manufacturing method of large-diameter and high-viscosity polyester monofilament - Google Patents
Manufacturing method of large-diameter and high-viscosity polyester monofilament Download PDFInfo
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- CN103469326A CN103469326A CN2013104314573A CN201310431457A CN103469326A CN 103469326 A CN103469326 A CN 103469326A CN 2013104314573 A CN2013104314573 A CN 2013104314573A CN 201310431457 A CN201310431457 A CN 201310431457A CN 103469326 A CN103469326 A CN 103469326A
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Abstract
The invention provides a manufacturing method of a large-diameter and high-viscosity polyester monofilament. The method comprises the working procedures of tackifying low-viscosity polyester chip raw material by polyester solid phase polycondensation to increase the intrinsic viscosity to be eta which is within the range of 0.9-1.0; drying the tackified polyester chip by a vacuum polyester dryer for crystallization, and enabling the water content of the polyester chip to be lower than 100ppm; melting the dried polyester chip to form polyester melt; evenly extruding the polyester melt by a metering pump, and forming primary monofilament by a mould; stretching the primary monofilament twice respectively in a prestretching way and an all-stretching way; shaping the stretched primary monofilament to form the large-diameter and high-viscosity polyester monofilament. The product obtained by the method can overcome the defects in the prior art, and avoids the phenomena of melt fracture and filament break increase caused by the overhigh intrinsic viscosity of the polyester chip raw material and the overlarge molecular weight of the polyester chip. Furthermore, by adopting the special drying procedure, the method reduces the dry heat shrinkage rate of the monofilament and improves the breaking strength of the monofilament.
Description
Technical field
The present invention relates to a kind of production technology of industrial monofilament, belong to the chemical fibre field, specifically the preparation method of the high bonded polyester fibre monofilament of a kind of major diameter.
Technical background
Monofilament is exactly one filament, and general diameter is greater than 0.08mm.The high polymer monofilament has good ABRASION RESISTANCE, and practical function is better than wire, and rigidity is larger than multifilament, can make fabric be enhanced at a certain assigned direction, and low surface area and high volume make not vulnerable to pollution contribute to resistant to hydrolysis of fabric.Monofilament can make fabric have " macropore " structure, and to filtering and sieving, especially sizing screening is very important for this.
General polyester monofilament is all directly to be melt-spun into silk by the terylene chips of low viscosity (inherent viscosity is in left and right, [η]=0.65) or terylene regeneration section after super-dry, such monofilament shortcoming is that the single wire fracture brute force is low, intensely dark pool, surface, not wear-resisting, therefore the monofilament filtering net outward appearance ugliness that such monofilament is worked it out and intensity is low, the life-span is short, can not meet client's specification requirement.Historical facts or anecdotes has the technique that adopts high bonded polyester fibre section to produce monofilament in trampling, but the increase along with slicing characteristics viscosity, the molecular weight of section is also increasing, the entrance pressure drop of terylene melt and die swell ratio increase, buoyancy effect significantly causes melt fracture to increase fracture of wire, so be not that viscosity is the bigger the better.
Solve above-mentioned two kinds of problems, the terylene chips of just necessary selectivity characteristic modest viscosity.
Summary of the invention
The object of the invention is to provide for existing polyester monofilament product defects the preparation method of the high bonded polyester fibre monofilament of major diameter that a kind of ultimate strength is large, wear-resisting.Produced monofilament by the terylene chips of determining modest viscosity, thereby overcome monofilament filtering net outward appearance ugliness in prior art and intensity is low, the life-span is short defect, avoid again because the section molecular weight is excessive, and cause the situation of melt fracture, increase fracture of wire to occur simultaneously.
Technical solution of the present invention is:
The preparation method of the high bonded polyester fibre monofilament of a kind of major diameter comprises following operation:
(1) tackify operation: the solid phase polycondensation (concrete technology) that low viscous terylene chips raw material is carried out to polyester carries out tackify, and inherent viscosity is increased between η=0.9-1.0;
(2) drying process: the polyester slice after tackify is carried out to drying crystalline by vacuum polyester drying machine, and baking temperature is 125 ± 5 ℃, is not less than 4 hours drying time, makes the moisture content of polyester slice lower than 100ppm;
(3) the dried polyester slice of melting, form polyester fondant;
(4) polyester fondant is evenly extruded through measuring pump, by mould, forms nascent monofilament;
(5) nascent monofilament is through predraft and complete twice stretching that stretch;
(6) the nascent monofilament typing after the stretching;
(7) form the high bonded polyester fibre monofilament of major diameter finished product.
The preparation method of the high bonded polyester fibre monofilament of foregoing major diameter, described operation (1) is specially: the solid phase polycondensation (concrete technology) that low viscous terylene chips raw material is carried out to polyester carries out tackify, makes inherent viscosity increase to η=0.915.
The preparation method of the high bonded polyester fibre monofilament of foregoing major diameter, described operation (2) is specially: the polyester slice after tackify is carried out to drying crystalline by vacuum polyester drying machine, baking temperature is 125 ± 5 ℃, is not less than 4 hours drying time, and the moisture content that makes polyester slice is 30-75ppm.
The preparation method of the high bonded polyester fibre monofilament of foregoing major diameter, described operation (4) is specially: polyester fondant is evenly extruded through measuring pump, by the nib aperture, is greater than 2.2mm, and the mould that draw ratio is 7-8 forms nascent monofilament.
Compared with prior art, the present invention has following advantage:
1, overcome in prior art because the inherent viscosity of terylene chips raw material is too low, cause the last monofilament filtering net outward appearance ugliness formed and the defect that intensity is low, the life-span is short; Avoid again, because the inherent viscosity of terylene chips raw material is too high, causing the terylene chips molecular weight excessive, and finally cause the situation of melt fracture, increase fracture of wire to occur simultaneously.
2, adopt special drying program, make the moisture content of polyester slice raw material lower than 100ppm, thereby reduce the dry-hot shrinkage of monofilament, the fracture strength of increase monofilament.
The specific embodiment
Illustrate content of the present invention by following examples:
Embodiment mono-:
The first step: terylene chips raw material (inherent viscosity [η]=0.65) is carried out to the solid phase polycondensation tackify of polyester, make the inherent viscosity of terylene chips increase to 0.915.
Second step: the polyester slice after tackify is carried out to drying crystalline by vacuum polyester drying machine, and baking temperature is 130 ℃, 4 hours drying times, makes the moisture content of polyester slice be reduced to 75ppm.
The 3rd step: melting is dry sliced.
The 4th step: melt is evenly extruded through measuring pump, by the nib aperture, is the mould that 2.4mm, draw ratio are 7, forms many nascent monofilament.
The 5th step: nascent monofilament is walked the first elongator,, the second elongator predraft.
The 6th step: adopt two bellows series connection hot air shapings, the temperature of two typing bellows is identical, and temperature is 220 ℃, and the setting machine rotating speed is 88m/min, and negative stretch ratio is 7.3%.
The 7th step: oil, sub-wire is reeled, regularly lower, will obtain smoothly the high bonded polyester fibre monofilament of major diameter finished product.
The physical property of the resulting monofilament of this method is: ultimate strength is greater than 34kg, elongation at break is 47%, and xeothermic under the inherent viscosity of monofilament [η]=0.84,180 ℃ is punctured into 11.5, and roundness is 97%.The screen pack be woven into this monofilament can be applicable to the occasions such as sludge dewatering of municipal wastewater treatment plant, papermaking, chemical industry.
Embodiment bis-:
The first step: terylene chips raw material (inherent viscosity [η]=0.65) is carried out to the solid phase polycondensation tackify of polyester, make the inherent viscosity of terylene chips increase to 0.9.
Second step: the polyester slice after tackify is carried out to drying crystalline by vacuum polyester drying machine, and baking temperature is 130 ℃, 4 hours drying times, makes the moisture content of polyester slice be reduced to 30ppm.
The 3rd step: melting is dry sliced.
The 4th step: melt is evenly extruded through measuring pump, by the nib aperture, is the mould that 2.2mm, draw ratio are 7.5, forms many nascent monofilament.
The 5th step: nascent monofilament is walked the first elongator,, the second elongator predraft.
The 6th step: adopt two bellows series connection hot air shapings, the temperature of two typing bellows is identical, and temperature is 220 ℃, and the setting machine rotating speed is 88m/min, and negative stretch ratio is 7.3%.
The 7th step: oil, sub-wire is reeled, regularly lower, will obtain smoothly the high bonded polyester fibre monofilament of major diameter finished product.
The physical property of the resulting monofilament of this method is: ultimate strength is greater than 32kg, elongation at break is 37%, and xeothermic under the inherent viscosity of monofilament [η]=0.81,180 ℃ is punctured into 10.4, and roundness is 96%.
Embodiment tri-:
The first step: terylene chips raw material (inherent viscosity [η]=0.65) is carried out to the solid phase polycondensation tackify of polyester, make the inherent viscosity of terylene chips increase to 1.0.
Second step: the polyester slice after tackify is carried out to drying crystalline by vacuum polyester drying machine, and baking temperature is 130 ℃, 4 hours drying times, makes the moisture content of polyester slice be reduced to 50ppm.
The 3rd step: melting is dry sliced.
The 4th step: melt is evenly extruded through measuring pump, by the nib aperture, is the mould that 2.5mm, draw ratio are 8, forms many nascent monofilament.
The 5th step: nascent monofilament is walked the first elongator,, the second elongator predraft.
The 6th step: adopt two bellows series connection hot air shapings, the temperature of two typing bellows is identical, and temperature is 220 ℃, and the setting machine rotating speed is 88m/min, and negative stretch ratio is 7.3%.
The 7th step: oil, sub-wire is reeled, regularly lower, will obtain smoothly the high bonded polyester fibre monofilament of major diameter finished product.
The physical property of the resulting monofilament of this method is: ultimate strength is greater than 35kg, elongation at break is 42%, and xeothermic under the inherent viscosity of monofilament [η]=0.89,180 ℃ is punctured into 11.1, and roundness is 98%.
Claims (4)
1. the preparation method of the high bonded polyester fibre monofilament of major diameter is characterized in that comprising following operation:
(1) tackify operation: the solid phase polycondensation that low viscous terylene chips raw material is carried out to polyester carries out tackify, and inherent viscosity is increased between η=0.9-1.0;
(2) drying process: the polyester slice after tackify is carried out to drying crystalline by vacuum polyester drying machine, and baking temperature is 125 ± 5 ℃, is not less than 4 hours drying time, makes the moisture content of polyester slice lower than 100ppm;
(3) the dried polyester slice of melting, form polyester fondant;
(4) polyester fondant is evenly extruded through measuring pump, by mould, forms nascent monofilament;
(5) nascent monofilament is through predraft and complete twice stretching that stretch;
(6) the nascent monofilament typing after the stretching;
(7) form the high bonded polyester fibre monofilament of major diameter finished product.
2. the preparation method of the high bonded polyester fibre monofilament of major diameter according to claim 1, it is characterized in that: described operation (1) is specially: the solid phase polycondensation (concrete technology) that low viscous terylene chips raw material is carried out to polyester carries out tackify, makes inherent viscosity increase to η=0.915.
3. the preparation method of the high bonded polyester fibre monofilament of major diameter according to claim 1 and 2, it is characterized in that: described operation (2) is specially: the polyester slice after tackify is carried out to drying crystalline by vacuum polyester drying machine, baking temperature is 125 ± 5 ℃, be not less than 4 hours drying time, the moisture content that makes polyester slice is 30-75ppm.
4. the preparation method of the high bonded polyester fibre monofilament of major diameter according to claim 1 and 2, it is characterized in that: described operation (4) is specially: polyester fondant is evenly extruded through measuring pump, be greater than 2.2mm by the nib aperture, the mould that draw ratio is 7-8, form nascent monofilament.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931773A (en) * | 2016-05-26 | 2016-09-07 | 威海天乘华轮特种带芯有限公司 | Rubber skeleton, and manufacturing method and manufacturing equipment thereof |
| CN114164504A (en) * | 2021-12-13 | 2022-03-11 | 浙江宝力特种丝业有限公司 | Production process of large-diameter polyester monofilament |
| CN114197079A (en) * | 2021-12-28 | 2022-03-18 | 南通新帝克单丝科技股份有限公司 | Large-diameter polyester monofilament and production method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR960002879B1 (en) * | 1993-12-09 | 1996-02-27 | 주식회사코오롱 | Manufacturing method of polyester fiber having high strength and low shrinkage |
| NO20043002L (en) * | 2003-07-15 | 2005-01-17 | Degussa | Device and method for discontinuous polycondensation |
| CN1654718A (en) * | 2005-02-28 | 2005-08-17 | 无锡金通化纤有限公司 | Single filament of terylene printing silk screen and manufacturing method thereof |
| WO2007042387A1 (en) * | 2005-10-10 | 2007-04-19 | Epc Anlagenbau Rudisleben Gmbh | Method for producing polyester nanocomposites |
| CN101089266A (en) * | 2007-07-04 | 2007-12-19 | 陈晓美 | Manufacturing method of antithermal shrink polyster high strength yarn |
| CN101302652A (en) * | 2008-06-05 | 2008-11-12 | 江苏盛虹化纤有限公司 | Processing method of colored polyester monofilaments |
| CN101503832A (en) * | 2008-09-16 | 2009-08-12 | 江苏盛虹化纤有限公司 | Processing method of high-shrinkage superfine denier polyester staple fibers |
-
2013
- 2013-09-22 CN CN2013104314573A patent/CN103469326A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR960002879B1 (en) * | 1993-12-09 | 1996-02-27 | 주식회사코오롱 | Manufacturing method of polyester fiber having high strength and low shrinkage |
| NO20043002L (en) * | 2003-07-15 | 2005-01-17 | Degussa | Device and method for discontinuous polycondensation |
| CN1654718A (en) * | 2005-02-28 | 2005-08-17 | 无锡金通化纤有限公司 | Single filament of terylene printing silk screen and manufacturing method thereof |
| WO2007042387A1 (en) * | 2005-10-10 | 2007-04-19 | Epc Anlagenbau Rudisleben Gmbh | Method for producing polyester nanocomposites |
| CN101089266A (en) * | 2007-07-04 | 2007-12-19 | 陈晓美 | Manufacturing method of antithermal shrink polyster high strength yarn |
| CN101302652A (en) * | 2008-06-05 | 2008-11-12 | 江苏盛虹化纤有限公司 | Processing method of colored polyester monofilaments |
| CN101503832A (en) * | 2008-09-16 | 2009-08-12 | 江苏盛虹化纤有限公司 | Processing method of high-shrinkage superfine denier polyester staple fibers |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931773A (en) * | 2016-05-26 | 2016-09-07 | 威海天乘华轮特种带芯有限公司 | Rubber skeleton, and manufacturing method and manufacturing equipment thereof |
| CN114164504A (en) * | 2021-12-13 | 2022-03-11 | 浙江宝力特种丝业有限公司 | Production process of large-diameter polyester monofilament |
| CN114197079A (en) * | 2021-12-28 | 2022-03-18 | 南通新帝克单丝科技股份有限公司 | Large-diameter polyester monofilament and production method thereof |
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Application publication date: 20131225 |