CN102031594B - Production method of polyester staple fiber for jet vortex spinning process - Google Patents
Production method of polyester staple fiber for jet vortex spinning process Download PDFInfo
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- CN102031594B CN102031594B CN 201010621941 CN201010621941A CN102031594B CN 102031594 B CN102031594 B CN 102031594B CN 201010621941 CN201010621941 CN 201010621941 CN 201010621941 A CN201010621941 A CN 201010621941A CN 102031594 B CN102031594 B CN 102031594B
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Abstract
The invention discloses a production method of a polyester staple fiber for a jet vortex spinning process, comprising the steps of obtaining a general polyester tow and a special polyester tow by using a conventional spinning and post treatment process and then combining the general polyester tow with the special polyester tow according to the proportion and cutting off to obtain a mixed staple fiber of the general polyester tow and the special polyester with the same length. The combining proportion is counted according to the number; special polyester accounts for 5-15 percent of the total weight; the section of the general polyester staple fiber is circular; the section of the special polyester staple fiber is crisscross and/or trifoliate; and the filament ratio of the general polyester staple fiber to the special polyester staple fiber is 1.0:1.0-1.4. When the polyester staple fiber is subjected to pure spinning by using an MVS (Jet Vortex Spinning) process, oiling agent scaling matter on a vortex tube, a spindle and other main parts in spinning equipment are remarkably reduced, the defect that the soft twist is easy to be generated in the yarn forming process can be effectively overcome, the cleaning period of main spinning parts is prolonged and the production efficiency for spinning is greatly improved.
Description
Technical field
The present invention relates to a kind of manufacture method of polyester staple fiber, particularly be exclusively used in the manufacture method of the polyester staple fiber of air-jet eddy-current spinning yarn process.
Background technology
Air injection air vortex spinning (MVS) is the spinning technique of new generation in the development of traditional air-jet spinning (MJS) basis, MVS is when resultant yarn, sliver is by the air-flow suction vortex pipe of negative pressure, and fiber is realized free-ended eddy current twisting under the effect of High Rotation Speed air-flow in pipe.MVS has that speed is fast, output is high, flow process is short and the lot of advantages such as row yielding is high, although MVS yarn and MJS yarn have the double-decker of core fibre and wrapper fibre, but the resultant yarn mechanism of MVS has determined fiber and can realize tight looping, the ratio of MVS yarn outer wrapping fiber is much higher, hairiness number is but far below the MJS yarn, so single end strength is greatly improved.In theory; the adaptability of MVS is wider; can be used for processing chemical fibre, viscose, fiber crops or the multiple fiber such as cotton is made pure spinning or blended yarn; but in fact MVS is carrying out can meeting with larger puzzlement the pure man-hour that adds of spinning man-made fibre yarn; because the chemical fibre finished product must make fiber contain a certain amount of finish through oiling usually, to give the good antistatic behaviour of fiber and suitable flatness and convergence.But such as the comparatively fine and close chemical fibre of the materials such as terylene, the finish major part that contains on the fiber is attached to the surface and forms one deck oil film, during spinning twisting, fiber under the effect of eddy current air-flow with vortex tube inwall and vortex tube in hollow spindle surface high-speed friction occurs, the oil film of fiber surface can stick on vortex tube inwall and the hollow spindle, and finish can progressively be piled up the dry finish foulant that forms after mixing a certain amount of dust.The finish foulant can cause the gas spray orifice on the vortex tube inwall to stop up on the one hand, make the swirl gas flow reduce the decline that causes twisting active force, can increase on the other hand fiber and when twisting, make the running resistance of high speed rotary, this causes resultant yarn easily to produce weak twist the most at last, and and then affect single end strength, when serious even make the yarn hole plug that draws of hollow spindle cause Yarn break.People adopt the cleaning frequency of critical pieces such as shortening vortex tube, spindle to solve this problem usually in the prior art.For example, when spinning pure Polyester Yarns, usually need the cleaning progress was once shortened to 3～5 hours once by general 2～3 days, this obviously greatly reduces the production efficiency of spinning.
Summary of the invention
The invention provides a kind of manufacture method of the polyester staple fiber for the air-jet eddy-current spinning yarn process, technical problem to be solved is that the polyester staple fiber that makes is when spinning processing, in the spinning equipment as be difficult for forming the finish foulant on the critical pieces such as vortex tube, spindle, thereby reduce the possibility of resultant yarn generation weak twist.
Below be the concrete technical scheme that the present invention solves the problems of the technologies described above:
A kind of manufacture method of the polyester staple fiber for the air-jet eddy-current spinning yarn process, the method comprises that respectively spinning and the aftertreatment technology process with routine makes ordinary polyester tow and special polyester tow, then cut off after both being merged in proportion, obtain the staple fibre that the identical ordinary polyester of length mixes with special polyester, the merging ratio is in radical, and special polyester accounts for 5%～15% of total amount.The cross section of ordinary polyester staple fibre is circular, and the cross section of special polyester staple fibre is cross and/or trilobal, and the ordinary polyester staple fibre is 1.0: 1.0～1.0: 1.4 with the fiber number ratio of special polyester staple fibre.
The merging ratio of above-mentioned ordinary polyester and special polyester is in radical, and special polyester preferably accounts for 6%～10% of total amount; The ordinary polyester staple fibre is preferably 1.0: 1.0 with the fiber number ratio of special polyester staple fibre～and 1.0: 1.2.
Above-mentioned ordinary polyester staple fibre and special polyester staple fibre are generally cotton type; Spinning and aftertreatment technology process generally comprise spinning, coiling, boundling, drawing-off, HEAT SETTING, oil, curling and laxation shaping.
Key problem in technology of the present invention is to mix the profiled filament that a part of cross section is cross and/or trilobal in common polyester staple fiber, obtains the staple fibre that the identical ordinary polyester of length mixes with special polyester.In the process, through operations such as shredding, comb and parallel cotton fibers prior to spinnings, general fibre can be mixed fully with profiled filament in the sliver of making after spinning.Experimental result shows, when this polyester staple fiber adopts the spinning of MVS technique, in the spinning equipment as on the critical pieces such as vortex tube, spindle the phenomenon of formation finish foulant can be improved significantly.This is owing to contain equably the profiled filament that a certain amount of cross section is cross and/or trilobal in the sliver, the profiled filament surface exists four or three ribs vertically, during spinning twisting, high-speed friction occurs with vortex tube inwall and hollow spindle surface in fiber under the effect of eddy current air-flow, rib on the profiled filament can rub the surface of scraping these parts, thereby play good cleaning action, make the finish foulant be difficult to form.Know according to experimental data, when the content of profiled filament 〉=5%, this cleaning action is fairly obvious, the raising of content helps the enhancing of cleaning action, but the proterties such as feel of resultant yarn can change to some extent when 〉=15%, unless specific demand is arranged, the content of profiled filament should not surpass this upper limit generally speaking, and what the inventor relatively recommended is 6%～10%.Experimental data does not reflect that there is obvious difference in the cleaning action of the profiled filament of cross or trifoil cross-section, both mix use with any ratio all is feasible obviously, but more simplify for manufacture process, cross or trifoil cross-section profiled filament are chosen any one kind of them among both and are got final product.The fiber number of profiled filament can be slightly larger than general fibre, and the inventor finds the raising that this helps cleaning action power, and this also has the scope of an appropriateness certainly, otherwise can affect equally the physical behavior of resultant yarn.The length of profiled filament and general fibre can be slightly variant in theory, but generally fiber merges more convenient when cutting off, and can guarantee that the interior general fibre of finished product steamed stuffed bun and profiled filament after the metering packing have correct proportioning, therefore are controlled to be length unanimously.
Good effect of the present invention is fairly obvious, the man-hour that adds that the MVS of the terylene short fiber Wesy technique that adopts the present invention to make is carried out pure spinning, obviously reduce such as critical piece oil agent foulant such as vortex tube, spindles in the spinning equipment, effectively overcome the defective that resultant yarn easily produces weak twist, the cleaning frequency of main spinning parts prolongs, and the production efficiency of spinning significantly improves.
The invention will be further described below by specific embodiment.Because the generation of resultant yarn weak twist has reflected in the spinning equipment formation such as critical piece oil agent foulant such as vortex tube, spindles sensitively, and the resultant yarn weak twist will directly affect the single thread ultimate strength, thus embodiment with the continuous spinning certain hour after the rate of descent of single thread ultimate strength estimate the invention effect.The rate of descent of single thread ultimate strength is defined as follows formula, and wherein the single thread ultimate strength is pressed GB/T 3916-1997 mensuration.
In the following formula, P
0The single thread ultimate strength of measuring when carrying out 1 minute for spinning, P
tThe single thread ultimate strength of measuring when being t for the continuous spinning time.
The specific embodiment
[embodiment 1～10]
Spinning and aftertreatment technology process with routine make ordinary polyester tow and special polyester tow, and the cross section of ordinary polyester is circular, and spinning and aftertreatment technology process comprise spinning, coiling, boundling, drawing-off, HEAT SETTING, oil, curling and laxation shaping.Cut off the metering packing after will merging by required proportioning through the tow of post processing.The ordinary polyester staple fibre of each embodiment and specification, the proportioning of special polyester staple fibre see Table 1.
[comparative example 1～3]
All be that the cross section is circular ordinary polyester staple fibre, specification sees Table 1.
The polyester staple fiber that embodiment and comparative example are made adopts MVS technique to carry out the pure processing of spinning the polyester knitting yarn, and the stocking yarn specification sees Table 2.As beginning spinning after the critical pieces such as vortex tube, the spindle cleanings, when measuring spinning and carrying out 1min and the single thread ultimate strength when continuous spinning 48,72hr, calculate single thread ultimate strength rate of descent in the spinning equipment, the results are shown in Table 2.
Table 1.
*: special polyester content is in radical.
Table 2.
Claims (5)
1. manufacture method that is used for the polyester staple fiber of air-jet eddy-current spinning yarn process, it is characterized in that the method comprises that respectively spinning and aftertreatment technology process with routine make ordinary polyester tow and special polyester tow, then cut off after both being merged in proportion, obtain the staple fibre that the identical ordinary polyester of length mixes with special polyester, the merging ratio is in radical, special polyester accounts for 5%～15% of total amount, the cross section of ordinary polyester staple fibre is circular, the cross section of special polyester staple fibre is cross and/or trilobal, and the ordinary polyester staple fibre is 1.0: 1.0～1.0: 1.4 with the fiber number ratio of special polyester staple fibre.
2. the manufacture method of polyester staple fiber according to claim 1 is characterized in that described merging ratio in radical, and special polyester accounts for 6%～10% of total amount.
3. the manufacture method of polyester staple fiber according to claim 1 is characterized in that described ordinary polyester staple fibre and the fiber number ratio of special polyester staple fibre are 1.0: 1.0～1.0: 1.2.
4. the manufacture method of polyester staple fiber according to claim 1 is characterized in that described ordinary polyester staple fibre and special polyester staple fibre are cotton type.
5. according to claim 1, the manufacture method of 2,3 or 4 described polyester staple fibers, it is characterized in that described spinning and aftertreatment technology process comprise spinning, coiling, boundling, drawing-off, HEAT SETTING, oil, curling and laxation shaping.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010621941 CN102031594B (en) | 2010-12-30 | 2010-12-30 | Production method of polyester staple fiber for jet vortex spinning process |
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| CN 201010621941 CN102031594B (en) | 2010-12-30 | 2010-12-30 | Production method of polyester staple fiber for jet vortex spinning process |
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| CN102031594B true CN102031594B (en) | 2013-04-10 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102242434B (en) * | 2011-06-17 | 2013-04-03 | 杭州奥华纺织有限公司 | Cation viscose vortex spun woven fabric and preparation method thereof |
| CN102358965B (en) * | 2011-08-30 | 2014-07-16 | 滁州安兴环保彩纤有限公司 | Compound color polyester chopped fiber and production device and method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553383A (en) * | 1982-12-21 | 1985-11-19 | Vyzkumny Ustav Bavlnarsky | Method of and apparatus for spinning yarn from staple fibers in an air vortex |
| GB2174723A (en) * | 1985-05-07 | 1986-11-12 | Npk Textilno Mash | Air vortex nozzle for spinning yarn from staple fibres |
| CN1254388A (en) * | 1997-05-05 | 2000-05-24 | 纳幕尔杜邦公司 | Polyester yarn |
| CN1970854A (en) * | 2005-11-22 | 2007-05-30 | 东丽纤维研究所（中国）有限公司 | Water-absorbent rapid-dry impermeable profile mixed fiber terylen filament and method for producing same |
| CN101343796A (en) * | 2008-09-03 | 2009-01-14 | 扬州华美丙纶纺织有限公司 | Polypropylene profiled fiber and its silk spraying method |
| CN101343800A (en) * | 2008-09-03 | 2009-01-14 | 扬州华美丙纶纺织有限公司 | Revolving cup spinning profiled polypropylene fiber rough yarn and its spinning method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002266181A (en) * | 2001-03-02 | 2002-09-18 | Teijin Ltd | Combined polyester filament yarn |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553383A (en) * | 1982-12-21 | 1985-11-19 | Vyzkumny Ustav Bavlnarsky | Method of and apparatus for spinning yarn from staple fibers in an air vortex |
| GB2174723A (en) * | 1985-05-07 | 1986-11-12 | Npk Textilno Mash | Air vortex nozzle for spinning yarn from staple fibres |
| CN1254388A (en) * | 1997-05-05 | 2000-05-24 | 纳幕尔杜邦公司 | Polyester yarn |
| CN1970854A (en) * | 2005-11-22 | 2007-05-30 | 东丽纤维研究所（中国）有限公司 | Water-absorbent rapid-dry impermeable profile mixed fiber terylen filament and method for producing same |
| CN101343796A (en) * | 2008-09-03 | 2009-01-14 | 扬州华美丙纶纺织有限公司 | Polypropylene profiled fiber and its silk spraying method |
| CN101343800A (en) * | 2008-09-03 | 2009-01-14 | 扬州华美丙纶纺织有限公司 | Revolving cup spinning profiled polypropylene fiber rough yarn and its spinning method |
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