CN102747474A - Differential shrinkage composite fiber and processing method thereof - Google Patents
Differential shrinkage composite fiber and processing method thereof Download PDFInfo
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- CN102747474A CN102747474A CN2012102524483A CN201210252448A CN102747474A CN 102747474 A CN102747474 A CN 102747474A CN 2012102524483 A CN2012102524483 A CN 2012102524483A CN 201210252448 A CN201210252448 A CN 201210252448A CN 102747474 A CN102747474 A CN 102747474A
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Abstract
The invention relates to a differential shrinkage composite fiber and a processing method thereof. The processing method includes the sequential steps of subjecting to raw materials, namely pure terephthalic acid and glycol, to esterification to obtain polyester melt, delivering the melt, simultaneously spinning pre-oriented yarns and full-drawn yarns, oiling, pre-interlacing the full-drawn yarns, drafting the full-drawn yarns, interlacing and complexing, and winding to produce the differential shrinkage composite fiber of 47dtex/48f. Existing equipment is fully modified, spinning and winding are integrated, 20 fixed-length constant-weight spinning cakes can be produced at each station, production efficiency is high, yield is increased, product quality is stable, the produced fiber has differential shrinkage, post-processing gigging is effective, the differential shrinkage composite fiber feels nice, is thick and is widely applicable to production of chiffon and printed fabrics.
Description
Technical field
The present invention relates to a kind of processing method of on fused mass directly spinning, producing composite fibre; Especially can be with two kinds of different fibrous raw material spinning; Be incorporated into the power networks compound, step of reeling accomplishes, and 20 fixed length processing method of the different contraction composite fibre of heavy spinning cake is surely produced in spinning, every potential energy of reeling simultaneously.
Background technology
Owing to the production technology reason; Domestic manufacturer generally adopts two-step method to produce different contraction composite fibre; Its spinning of this production method, every potential head number of reeling are 6,12 mostly, are exactly at most 20, are common conventional spinning, coiling technology; Independent spinning through pre-oriented yarn (POY) and full-drawn yarn (FDY), reel after the unwinding different contraction composite fibre of processing that is incorporated into the power networks again, two-step method production exists following unfavorable factor:
1. production efficiency is low: the two-step method recombination velocity is about 800m/min;
2. production cost is high: two-step method is to be composited through later process behind two kinds of independent spinning of fiber, the coiling again, and production procedure increases, and the equipment input increases; Floor space is big, and labour cost is high, and raw materials consumption is big; The production cycle field, circulating fund takies increase, and the high-class product rate is low;
3. quality is unstable: the two-step method production procedure is long, and the control point is many, and influence factor is many, and is wayward;
Produce the unfavorable factor that different contraction composite fibre brings in order to solve two-step method, people have invented one-step method and have produced different contraction composite fibre.Patent documentation CN101824690A discloses a kind of " spinning, the winding combined manufacturing process of 24/position multi-heterogeneous hybrid yarn composite fiber of one-step method "; Processing step be successively get the raw materials ready, crystallizing and drying, fusion and filter, melt distributes, spin pre-oriented yarn and fullly drawn yarn (FDY) simultaneously, oil, stretch entirely preparatory network, fullly drawn yarn (FDY) drawing-off and typing, composite network and coiling (fixed length is heavy surely); Spinning and coiling is disposable synthetic, and every potential energy is produced the heavy surely spinning cake of 24 fixed length simultaneously.Yet, the different contraction composite fibre that adopts above-mentioned section spinning technique one-step method to produce, the different contraction composite fibre with respect to fused mass directly spinning technology one-step method is produced needs pelletizing, packing, dry supervisor, increases production cost, the quality control difficulty.
Summary of the invention
In order to overcome above-mentioned defective; The invention provides a kind of different contraction composite fibre and processing method thereof, this method adopts the fused mass directly spinning technology, makes full use of existing spinning, winding apparatus and transformation; Spinning and coiling is disposable synthetic; Every potential energy is produced the heavy surely spinning cake of 20 fixed length simultaneously, has improved productivity effect and economic benefit, produces high-quality different contraction composite fibre.
The present invention for the technical scheme that solves its technical problem and adopt is:
A kind of different contraction composite fibre adopts the fused mass directly spinning technology, and spinning is disposable synthetic with coiling, and production specification is 47dtex/48f.
The processing method of different contraction composite fibre, undertaken by following processing step:
1. esterification: carry out esterification by raw material p-phthalic acid and ethylene glycol;
2. prepare polyester fondant: after the raw material esterification, gather the preparation polyester fondant through precondensation and final minification again, the viscosity of prepared polyester fondant is 0.650;
3. melt Conveying: melt gets into pre-oriented yarn spinning manifold and full-drawn yarn spinning manifold respectively through two-way melt distributing pipe, and the mean temperature of described pre-oriented yarn spinning manifold and full-drawn yarn spinning manifold is (288 ± 1.0) ℃;
4. spin pre-oriented yarn (POY) and full-drawn yarn (FDY) simultaneously: the melt that gets into the pre-oriented yarn spinning manifold forms pre-oriented yarn through the metering of pre-oriented yarn measuring pump, assembly spray silk and ring cold wind blower cooling back successively; The melt that gets into the full-drawn yarn spinning manifold forms full-drawn yarn through the metering of full-drawn yarn measuring pump, assembly spray silk and ring cold wind blower cooling back successively; The measuring pump model of described pre-oriented yarn and full-drawn yarn is 1.2ccm; Assembly spinnerets specification is PRB88-12-0.19*0.54+36-0.15*0.45; Assembly sand cup size diameter 45mm; Component pressure is (160 ± 10) bar, ring blow pressure (700 ± 50) pa, ring blowing temperature (22 ± 2) ℃, ring blowing humidity (90 ± 5) %, ring blowing zone of silence height 75mm, ring blowing pressure reduction (15 ± 5) pa;
5. oil: pre-oriented yarn oil system on pre-oriented yarn oils, and the pre-oriented yarn after oiling gets into first, second draw-off godet successively, said finish pump type 0.05ccm; Full-drawn yarn oil system on full-drawn yarn oils, said finish pump type 0.05ccm;
6. the preparatory network of full-drawn yarn: the full-drawn yarn after oiling gets into and carries out preparatory network in the preparatory Network device, and described preparatory network pressure is 0.6bar;
7. full-drawn yarn drafting forming: silk forms full-drawn yarn through first hot-rolling, the heating drawing-off of second hot-rolling and typing successively behind the network in advance, and described first and second heat roller temperature is (86 ± 4) ℃, (120 ± 10) ℃;
8. network combined: the full-drawn yarn after the pre-oriented yarn after oiling and the typing is drawn by the second spinning reel and second hot-rolling respectively and carries out to the composite network device network combinedly, processes different contraction composite fibre, and said composite network pressure is (3 ± 0.2) bar;
9. reel: abnormal contraction composite filament gets into and is wound into the heavy surely spinning cake of fixed length in the up-coiler, and said winding speed is 3300m/min, and the coiling initial sum is switched winding angle and is 6.4 degree, and the initial contact pressure of reeling is 110N, guarantees that the spinning cake moulding is good.
The advantage of production and processing method of the present invention is:
1. production efficiency is high;
2. productive rate increases: every potential energy is produced 20 spinning cakes simultaneously;
3. production cost has reduced about 40%: production procedure is shortened, and to the scrap build less investment, labour cost does not increase basically.
4. constant product quality improves: output increases, and the melt-flow momentum increases, and melt time of staying in pipeline shortens, and has reduced the melt degraded;
5. economic benefit increases.
Description of drawings
Fig. 1 is the process chart of processing method of the present invention.
The specific embodiment
Embodiment:
Producing a kind of specification is the different contraction composite fibre of 47dtex/48f, adopts the fused mass directly spinning technology, and spinning is disposable synthetic with coiling, carries out according to following processing step:
1. raw material esterification: carry out esterification by raw material p-phthalic acid and ethylene glycol;
2. prepare polyester fondant: after the raw material esterification, gather the preparation polyester fondant through precondensation and final minification again, the viscosity of prepared polyester fondant is 0.650;
3. melt Conveying: melt gets into pre-oriented yarn spinning manifold and full-drawn yarn spinning manifold respectively through two-way melt distributing pipe, and the mean temperature of described pre-oriented yarn spinning manifold and full-drawn yarn spinning manifold is 288 ℃;
4. spin pre-oriented yarn (POY) and full-drawn yarn (FDY) simultaneously: the melt that gets into the pre-oriented yarn spinning manifold forms pre-oriented yarn through the metering of pre-oriented yarn measuring pump, assembly spray silk and ring cold wind blower cooling back successively; The melt that gets into the full-drawn yarn spinning manifold forms full-drawn yarn through the metering of full-drawn yarn measuring pump, assembly spray silk and ring cold wind blower cooling back successively; The measuring pump model of described pre-oriented yarn and full-drawn yarn is 1.2ccm; Assembly spinnerets specification is PRB88-12-0.19*0.54+36-0.15*0.45; Assembly sand cup size diameter 45mm; Component pressure is 160bar, ring blow pressure 700pa, 22 ℃ of temperature of ring blowing, ring blowing humidity 90%, ring blowing zone of silence height 75mm, ring blowing pressure reduction 15pa;
5. oil: pre-oriented yarn oil system on pre-oriented yarn oils, and the pre-oriented yarn after oiling gets into first, second draw-off godet successively, said finish pump type 0.05ccm; Full-drawn yarn oil system on full-drawn yarn oils, said finish pump type 0.05ccm;
6. the preparatory network of full-drawn yarn: the full-drawn yarn after oiling gets into and carries out preparatory network in the preparatory Network device, and described preparatory network pressure is 0.6bar;
7. full-drawn yarn drafting forming: silk forms full-drawn yarn through first hot-rolling, the heating drawing-off of second hot-rolling and typing successively behind the network in advance, and described first and second heat roller temperature is respectively 86 ℃, 123 ℃;
8. network combined: the full-drawn yarn after the pre-oriented yarn after oiling and the typing is drawn by the second spinning reel and second hot-rolling respectively and carries out to the composite network device network combinedly, processes different contraction composite fibre, and said composite network pressure is 3bar;
9. reel: abnormal contraction composite filament gets into and is wound into the heavy surely spinning cake of fixed length in the up-coiler, and said winding speed is 3300m/min, and the coiling initial sum is switched winding angle and is 6.4 degree, and the initial contact pressure of reeling is 110N, guarantees that the spinning cake moulding is good.
Adopt the different contraction composite fibre of the 47dtex/48f that processing method of the present invention produces, production efficiency increases with economic benefit, productive rate improves, production cost has reduced about 40%, the constant product quality raising.
Following table is the physical index of product of the present invention:
Claims (2)
1. a different contraction composite fibre is characterized in that adopting the fused mass directly spinning technology, and spinning is disposable synthetic with coiling, and production specification is 47dtex/48f.
2. the processing method of different contraction composite fibre, undertaken by following processing step:
1. esterification: carry out esterification by raw material p-phthalic acid and ethylene glycol;
2. prepare polyester fondant: after the raw material esterification, gather the preparation polyester fondant through precondensation and final minification again, the viscosity of prepared polyester fondant is 0.650;
3. melt Conveying: melt gets into pre-oriented yarn spinning manifold and full-drawn yarn spinning manifold respectively through two-way melt distributing pipe, and the mean temperature of described pre-oriented yarn spinning manifold and full-drawn yarn spinning manifold is (288 ± 1.0) ℃;
4. spin pre-oriented yarn (POY) and full-drawn yarn (FDY) simultaneously: the melt that gets into the pre-oriented yarn spinning manifold forms pre-oriented yarn through the metering of pre-oriented yarn measuring pump, assembly spray silk and ring cold wind blower cooling back successively; The melt that gets into the full-drawn yarn spinning manifold forms full-drawn yarn through the metering of full-drawn yarn measuring pump, assembly spray silk and ring cold wind blower cooling back successively; The measuring pump model of described pre-oriented yarn and full-drawn yarn is 1.2ccm; Assembly spinnerets specification is PRB88-12-0.19*0.54+36-0.15*0.45; Assembly sand cup size diameter 45mm; Component pressure is (160 ± 10) bar, ring blow pressure (700 ± 50) pa, ring blowing temperature (22 ± 2) ℃, ring blowing humidity (90 ± 5) %, ring blowing zone of silence height 75mm, ring blowing pressure reduction (15 ± 5) pa;
5. oil: pre-oriented yarn oil system on pre-oriented yarn oils, and the pre-oriented yarn after oiling gets into first, second draw-off godet successively, said finish pump type 0.05ccm; Full-drawn yarn oil system on full-drawn yarn oils, said finish pump type 0.05ccm;
6. the preparatory network of full-drawn yarn: the full-drawn yarn after oiling gets into and carries out preparatory network in the preparatory Network device, and described preparatory network pressure is 0.6bar;
7. full-drawn yarn drafting forming: silk forms full-drawn yarn through first hot-rolling, the heating drawing-off of second hot-rolling and typing successively behind the network in advance, and described first and second heat roller temperature is (86 ± 4) ℃, (120 ± 10) ℃;
8. network combined: the full-drawn yarn after the pre-oriented yarn after oiling and the typing is drawn by the second spinning reel and second hot-rolling respectively and carries out to the composite network device network combinedly, processes different contraction composite fibre, and said composite network pressure is (3 ± 0.2) bar;
9. reel: abnormal contraction composite filament gets into and is wound into the heavy surely spinning cake of fixed length in the up-coiler, and said winding speed is 3300m/min, and the coiling initial sum is switched winding angle and is 6.4 degree, and the initial contact pressure of reeling is 110N.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526323A (en) * | 2013-09-27 | 2014-01-22 | 苏州大学 | Copolyester melt direct-spinning controllable multiple differential shrinkage composite fiber and preparation method thereof |
| CN103981585A (en) * | 2014-05-23 | 2014-08-13 | 苏州大学 | Polyamide 6 POY/FDY composite fibre and preparation method adopting spinning-interlacing one-step process |
| CN103981580A (en) * | 2014-05-23 | 2014-08-13 | 苏州大学 | Polyamide 6 POY/FDY composite fibre and preparation method for same |
| CN103981587A (en) * | 2014-05-23 | 2014-08-13 | 苏州大学 | Polyamide 6 POY/FDY interlaced yarn and preparation method adopting one-step process |
| CN103981586A (en) * | 2014-05-23 | 2014-08-13 | 苏州大学 | Ultra-low differential shrinkage polyamide 6 composite fibers and preparation method thereof |
| CN104480568A (en) * | 2014-12-31 | 2015-04-01 | 江苏恒力化纤股份有限公司 | Linen-like type differential shrinkage composite filament and preparation method thereof |
| CN104499069A (en) * | 2014-12-17 | 2015-04-08 | 苏州龙杰特种纤维股份有限公司 | Spinning system of high-strength DTY (draw texturing yarn) composite yarns |
| CN104894716A (en) * | 2015-06-15 | 2015-09-09 | 湖州菁诚纺织品有限公司 | Processing technology of high and low shrinkage yarns |
| CN105506774A (en) * | 2015-12-29 | 2016-04-20 | 江苏恒力化纤股份有限公司 | Low-color-difference polyester differential shrinkage composite yarn and preparation method thereof |
| CN107938018A (en) * | 2017-11-30 | 2018-04-20 | 新凤鸣集团股份有限公司 | A kind of preparation method of different contraction radiation protection SSY composite fibres |
| CN113550074A (en) * | 2021-06-30 | 2021-10-26 | 江阴市华思诚无纺布有限公司 | Melt direct spinning coarse denier PET spun-bonded soft soil base reinforced non-woven geotechnical material and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04108112A (en) * | 1990-08-23 | 1992-04-09 | Teijin Ltd | Production of polyester fiber |
| CN101787584A (en) * | 2010-03-13 | 2010-07-28 | 浙江东华纤维制造有限公司 | Method for preparing continuous polymerization directly-spun high-shrinkage polyester staple fibers |
| CN101787583A (en) * | 2010-03-13 | 2010-07-28 | 浙江理工大学 | Method for preparing continuous polymerization directly-spun high-shrinkage polyester filaments |
| CN101824690A (en) * | 2009-03-02 | 2010-09-08 | 徐州斯尔克差别化纤维科技有限公司 | One-step spinning and winding combined manufacturing process for 24-head/position multi-heterogeneous hybrid yarn composite fiber |
| CN102443909A (en) * | 2011-10-31 | 2012-05-09 | 苏州巨源纤维科技有限公司 | Preparation method for porous micro-fine denier polyester POY (polyester pre-oriented yarn) and FDY (fully drawn yarn) interlaced composite yarn |
| CN102560777A (en) * | 2011-07-25 | 2012-07-11 | 桐乡市中辰化纤有限公司 | Composite different-contraction yarn production method |
| CN202989417U (en) * | 2012-07-20 | 2013-06-12 | 江苏盛虹科技股份有限公司 | Complex fiber with different shrinkage |
-
2012
- 2012-07-20 CN CN2012102524483A patent/CN102747474A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04108112A (en) * | 1990-08-23 | 1992-04-09 | Teijin Ltd | Production of polyester fiber |
| CN101824690A (en) * | 2009-03-02 | 2010-09-08 | 徐州斯尔克差别化纤维科技有限公司 | One-step spinning and winding combined manufacturing process for 24-head/position multi-heterogeneous hybrid yarn composite fiber |
| CN101787584A (en) * | 2010-03-13 | 2010-07-28 | 浙江东华纤维制造有限公司 | Method for preparing continuous polymerization directly-spun high-shrinkage polyester staple fibers |
| CN101787583A (en) * | 2010-03-13 | 2010-07-28 | 浙江理工大学 | Method for preparing continuous polymerization directly-spun high-shrinkage polyester filaments |
| CN102560777A (en) * | 2011-07-25 | 2012-07-11 | 桐乡市中辰化纤有限公司 | Composite different-contraction yarn production method |
| CN102443909A (en) * | 2011-10-31 | 2012-05-09 | 苏州巨源纤维科技有限公司 | Preparation method for porous micro-fine denier polyester POY (polyester pre-oriented yarn) and FDY (fully drawn yarn) interlaced composite yarn |
| CN202989417U (en) * | 2012-07-20 | 2013-06-12 | 江苏盛虹科技股份有限公司 | Complex fiber with different shrinkage |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526323A (en) * | 2013-09-27 | 2014-01-22 | 苏州大学 | Copolyester melt direct-spinning controllable multiple differential shrinkage composite fiber and preparation method thereof |
| CN103981580B (en) * | 2014-05-23 | 2016-06-29 | 苏州大学 | A kind of polyamide 6 POY/FDY composite fibre and preparation method thereof |
| CN103981580A (en) * | 2014-05-23 | 2014-08-13 | 苏州大学 | Polyamide 6 POY/FDY composite fibre and preparation method for same |
| CN103981587A (en) * | 2014-05-23 | 2014-08-13 | 苏州大学 | Polyamide 6 POY/FDY interlaced yarn and preparation method adopting one-step process |
| CN103981586A (en) * | 2014-05-23 | 2014-08-13 | 苏州大学 | Ultra-low differential shrinkage polyamide 6 composite fibers and preparation method thereof |
| CN103981585A (en) * | 2014-05-23 | 2014-08-13 | 苏州大学 | Polyamide 6 POY/FDY composite fibre and preparation method adopting spinning-interlacing one-step process |
| CN104499069A (en) * | 2014-12-17 | 2015-04-08 | 苏州龙杰特种纤维股份有限公司 | Spinning system of high-strength DTY (draw texturing yarn) composite yarns |
| CN104480568A (en) * | 2014-12-31 | 2015-04-01 | 江苏恒力化纤股份有限公司 | Linen-like type differential shrinkage composite filament and preparation method thereof |
| CN104894716A (en) * | 2015-06-15 | 2015-09-09 | 湖州菁诚纺织品有限公司 | Processing technology of high and low shrinkage yarns |
| CN105506774A (en) * | 2015-12-29 | 2016-04-20 | 江苏恒力化纤股份有限公司 | Low-color-difference polyester differential shrinkage composite yarn and preparation method thereof |
| CN105506774B (en) * | 2015-12-29 | 2017-12-12 | 江苏恒力化纤股份有限公司 | A kind of low aberration polyester abnormal contraction composite filament and preparation method thereof |
| CN107938018A (en) * | 2017-11-30 | 2018-04-20 | 新凤鸣集团股份有限公司 | A kind of preparation method of different contraction radiation protection SSY composite fibres |
| CN113550074A (en) * | 2021-06-30 | 2021-10-26 | 江阴市华思诚无纺布有限公司 | Melt direct spinning coarse denier PET spun-bonded soft soil base reinforced non-woven geotechnical material and preparation method thereof |
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Application publication date: 20121024 |