CN101418473A - Processing method of differential polyester staple fibers - Google Patents
Processing method of differential polyester staple fibers Download PDFInfo
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- CN101418473A CN101418473A CNA2008102430579A CN200810243057A CN101418473A CN 101418473 A CN101418473 A CN 101418473A CN A2008102430579 A CNA2008102430579 A CN A2008102430579A CN 200810243057 A CN200810243057 A CN 200810243057A CN 101418473 A CN101418473 A CN 101418473A
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- 239000000835 fiber Substances 0.000 title claims abstract description 29
- 229920000728 polyester Polymers 0.000 title claims abstract description 29
- 238000003672 processing method Methods 0.000 title claims abstract description 9
- 238000009987 spinning Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 11
- 238000007664 blowing Methods 0.000 claims abstract description 5
- 238000002036 drum drying Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 239000000047 product Substances 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 2
- 238000009998 heat setting Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000011265 semifinished product Substances 0.000 claims description 2
- 238000010008 shearing Methods 0.000 claims description 2
- 208000011580 syndromic disease Diseases 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000005520 cutting process Methods 0.000 abstract 1
- 238000012432 intermediate storage Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000010036 direct spinning Methods 0.000 description 2
- 230000002085 persistent effect Effects 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009963 fulling Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Artificial Filaments (AREA)
Abstract
The invention relates to a processing method of differential polyester staple fibers, which adopts the process flow of high-shrinkage polyester slicing → vacuum drum drying → intermediate storage bin → screw extruder → spinning box → metering pump → spinning assembly → spinneret plate → circular air-blowing cooling → double-sided oiling → drafting groove → two-sided drafting → three-sided drafting → feeding roller → silk containing barrel → drying → cutting → finished product, and the unique characteristics of the process parameters are as follows: the slice drying adopts a vacuum drum low-temperature long-time process; properly reducing the spinning temperature and the pre-stretching times; adopting a low-temperature stretching and unshaped stretching process; the spinneret plate adopts a finishing spinneret plate with the aperture of 0.2 mm to 0.5mm, and corresponding components are matched for use. Because the high-shrinkage functional polyester chips are used as raw materials, the polyester short fiber can be produced on common polyester short fiber spinning equipment without changing the existing spinning equipment during production.
Description
Technical field
The present invention relates to a kind of differential polyester staple fiber processing method, this method adopts section spinning process route and unique technological parameter to produce high shrinkage superfine denier polyester staple fiber, belongs to the chemical fibre production technical field.
Background technology
Polyester staple fiber is with good, the corrosion-resistant good performance and be widely used in various fields such as high-grade clothing, leather and fur products, medical surgery, military supplies such as go mouldy of intensity height, durability.
Polyester staple fiber has a lot of types, can be divided into by physical property that high-strength flatness type, middle persistent erection are stretched type, low persistent erection is stretched type, high-modulus type, high-strength and high-modulus amount type; Can be divided into cotton type, wool type, linen look, silk type by the back processing request; Can be divided into clothes usefulness, cotton for wadding usefulness, decorate usefulness, industrial by purposes; Can be divided into cationic-dyeable, moisture absorption, fire-retardant, coloured, ANTIPILLING, antistatic by function; Can be divided into circular wire, special-shaped silk, hollow yarn etc. by the fibre section.
The process route of domestic production polyester staple fiber has two kinds at present: melt Direct Spinning and section are spun, the basic flow process of these two kinds of process routes is identical, different is: the melt Direct Spinning is to give spinning process with the mode that polymer melt is directly carried by pipeline to carry out spinning, coiling, drawing-off, oven dry, cut-out etc., and section to spin be that section is carried out carrying out spinning, coiling, drawing-off, oven dry, cut-out etc. behind drying, the dried extrusion molten of spiral shell, the former product quality is more stable than the latter, and cost is lower.But the process route of producing functional or differential polyester staple fiber then generally adopts section to spin, because have only some specific function that spinning after the blend just can obtain fiber is carried out in functional master batch or additive and section.
Present stage, production method functional, differential polyester staple fiber has a lot, and its kind is also very abundant.But be subjected to the restriction of process conditions and appointed condition, when producing superfine denier polyester staple fiber, be difficult to accomplish to allow its shrinkage factor be improved, this also be also do not obtain at present a kind of stable performance, product quality have preferably highly shrinkable can, line density is lower than the reason of the polyester staple fiber of 1.10dtex.
Summary of the invention
The present invention is directed to the production reality of present polyester staple fiber, a kind of method of producing high shrinkage superfine denier polyester staple fiber is provided, it is identical that this method process route and common section are spun, but the properties of product of producing are stable, superior in quality, and production cost is lower.
For achieving the above object, the technical scheme that the present invention takes is:
1, produce according to section spinning process route, technological process is: high retraction polyester chip → vacuum drum drying → intermediate bunker → screw extruder → manifold → measuring pump → filament spinning component → spinnerets → ring blowing cooling → two-sided oiling → drawing-off groove → two road drawing-offs → three roads drawing-off → feeding roller → fiber barrel → oven dry → cut-out → finished product.
2, because raw material of the present invention is a high retraction polyester chip, so with conventional polyester slice spinning technology more significantly difference is arranged in its technological design, show: chip drying adopts the long-time technology of vacuum drum low temperature; Suitably reduce spinning temperature and predraft multiple; Adopt the draft process of cryogenic tensile and indefinite form.
3, because the product line density that the present invention produces is minimum, therefore should adopt the finishing spinnerets, be specially: spinneret orifice size 0.2*0.5mm.During use and cooperate corresponding assembly.
The present invention compared with prior art, the novelty of its technology and technology, creativeness, practicality show: owing to adopt high shrinkage functional polyester slice is raw material, need not do any change to existing spinning equipment when therefore producing, can on conventional polyester staple fiber spinning equipment, produce.In addition, because raw material is single, the high shrinkage superfine denier polyester staple fiber fiber of explained hereafter of the present invention has the low crystalline texture of high orientation, 160 ℃ of dry-hot shrinkages can reach 40%, boiling water shrinkage can reach 30%, fiber minimum line density can reach 0.56dtex, soft, the absorbent ventilate height of the high-shrinkage polyester staple fibre that product is more general.Production method of the present invention operates steadily, excellent product quality, the method production of adopting physics and chemical modification to combine.The wool-like fabric that is made into this kind fiber has good hand feeling and fulling milling style, can reach very evenly dense effect after the nonwoven fabric that is made into shrinks under heat-treat condition.Can be widely used in and produce non-weaving cloth, weaving/industrial yarn and fabric, composite etc., of many uses.
The specific embodiment
Below by specific embodiment the present invention is described in detail.
By raw material drying, preceding spin part and after spin part and narrate respectively:
(1) chip drying part:
High retraction polyester chip is through the vacuum drum drying, and baking temperature is 55-60 ℃, and the time is 36 hours, and vacuum is-0.2MPa.
(2) the preceding part of spinning:
1, the pre-crystallizer temperature of drying system is 68 ℃, 32 ℃ of filling drying machine temperature, the machine that blows in circulation.
2, spinnerets adopts 1455 (0.2*0.5), fills out the extra large sand of 900 grams in the assembly, 260 ℃ of preheat temperatures, 18 hours time. and pump spins fast 950m/min for amount 1000g/min* position, 25 ℃ of ring blowing wind-warm syndrome, blast 490Pa.
3, screw rod is respectively distinguished temperature: 196 ℃ in a district, 236 ℃ in two districts, 248 ℃ in three districts, 270 ℃ in four districts, 275 ℃ in five districts, 264 ℃ of heads, 250 ℃ of casings.
(3) spin part after:
1, the preceding semi-finished product silk 25-40 bucket that spins enters the boundling tension bracket, total denier 550,000 DENIER.
2, the boundling silk at first passes through the drawing-off groove, is second drawing machine and the 3rd drawing machine then, and drawing temperature is respectively: 45 ℃/55 ℃/60 ℃.Because the spun boundling silk fusing point of high contraction section is lower slightly, for preventing the roll banding phenomenon, tow is not gone up nervous roller, only passes through between the upper and lower roll, and nervous roller steam pressure drops to 0.1/0.3MPa, and roll surface temperature is 95 ℃.
3, the tow through nervous roller curls, and curling number is 10-20/25mm, does not carry out HEAT SETTING and handles.
4, spinning the drawing-off multiplying power after is 0.95*3.45*1.00, and draft speed is 110m/min.
5, cut off after the tow oven dry, shearing length is 38mm, and fiber number is 0.67dtex, and intensity is 3.5cN/dtex, and extension at break is 20%, and handling 30 minutes its shrinkage factors in 32%, 160 ℃ of heated dry air of boiling water shrinkage is 40%.
Claims (5)
1, the present invention relates to a kind of differential polyester staple fiber processing method, this method adopts the technological process of high retraction polyester chip → vacuum drum drying → intermediate bunker → screw extruder → manifold → measuring pump → filament spinning component → spinnerets → ring blowing cooling → two-sided oiling → drawing-off groove → two road drawing-offs → three roads drawing-off → feeding roller → fiber barrel → oven dry → cut-out → finished product, and it is characterized by: chip drying adopts the long-time technology of vacuum drum low temperature; Suitably reduce spinning temperature and predraft multiple; Adopt the draft process of cryogenic tensile and indefinite form; Spinnerets adopts the finishing spinnerets, aperture 0.2*0.5mm, and be used corresponding assembly.
2, according to the described processing method of claim 1, it is characterized by: high retraction polyester chip is through the vacuum drum drying, and baking temperature is 55-60 ℃, and the time is 36 hours, and vacuum is-0.2MPa; 68 ℃ of the pre-crystallizer temperature of drying system, 32 ℃ of filling drying machine temperature, the machine that blows in circulation.
3, according to the described processing method of claim 1, it is characterized by: spinnerets adopts 1455 (0.2*0.5), fills out the extra large sand of 900 grams in the assembly, 260 ℃ of preheat temperatures, 18 hours time. pump spins fast 950m/min for amount 1000g/min* position, 25 ℃ of ring blowing wind-warm syndrome, blast 490Pa; Screw rod is respectively distinguished 196 ℃ in temperature one district, 236 ℃ in two districts, 248 ℃ in three districts, 270 ℃ in four districts, 275 ℃ in five districts, 264 ℃ of heads, 250 ℃ of casings.
4, according to the described processing method of claim 1, it is characterized by: the preceding semi-finished product silk 25-40 bucket that spins enters the boundling tension bracket, total denier 550,000 DENIER; The boundling silk at first passes through the drawing-off groove, is second drawing machine and the 3rd drawing machine then, and drawing temperature is respectively: 45 ℃/55 ℃/60 ℃; Because the spun boundling silk fusing point of high contraction section is lower slightly, for preventing the roll banding phenomenon, tow is not gone up nervous roller, only passes through between the upper and lower roll, and nervous roller steam pressure drops to 0.1/0.3MPa, and roll surface temperature is 95 ℃; Tow through nervous roller curls, and curling number is 10-20/25mm, does not carry out HEAT SETTING and handles; After to spin the drawing-off multiplying power be 0.95*3.45*1.00, draft speed is 110m/min.
5, according to the described processing method of claim 1, it is characterized by: cut off after the tow oven dry, shearing length is 38mm, fiber number is 0.67dtex, and intensity is 3.5cN/dtex, and extension at break is 20%, handling 30 minutes its shrinkage factors in 32%, 160 ℃ of heated dry air of boiling water shrinkage is 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102430579A CN101418473A (en) | 2008-12-08 | 2008-12-08 | Processing method of differential polyester staple fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102430579A CN101418473A (en) | 2008-12-08 | 2008-12-08 | Processing method of differential polyester staple fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101418473A true CN101418473A (en) | 2009-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008102430579A Withdrawn CN101418473A (en) | 2008-12-08 | 2008-12-08 | Processing method of differential polyester staple fibers |
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| CN (1) | CN101418473A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250933A (en) * | 2014-09-09 | 2014-12-31 | 江苏蓝品纤维科技发展有限公司 | Preparation method for aromatic polyester fiber |
| CN110129970A (en) * | 2019-04-03 | 2019-08-16 | 盐城福汇纺织有限公司 | With the short fine knitting cloth of crease-resistant, wind-proof performance high convergency and its manufacturing method |
-
2008
- 2008-12-08 CN CNA2008102430579A patent/CN101418473A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250933A (en) * | 2014-09-09 | 2014-12-31 | 江苏蓝品纤维科技发展有限公司 | Preparation method for aromatic polyester fiber |
| CN110129970A (en) * | 2019-04-03 | 2019-08-16 | 盐城福汇纺织有限公司 | With the short fine knitting cloth of crease-resistant, wind-proof performance high convergency and its manufacturing method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |