CN101967690B - Production technique for regenerated three-dimensional hollow polyester staple fiber with high fluffiness - Google Patents
Production technique for regenerated three-dimensional hollow polyester staple fiber with high fluffiness Download PDFInfo
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- CN101967690B CN101967690B CN2010102969242A CN201010296924A CN101967690B CN 101967690 B CN101967690 B CN 101967690B CN 2010102969242 A CN2010102969242 A CN 2010102969242A CN 201010296924 A CN201010296924 A CN 201010296924A CN 101967690 B CN101967690 B CN 101967690B
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Abstract
The invention discloses a production technique for a regenerated three-dimensional hollow polyester staple fiber with high fluffiness, which comprises the steps of drying raw materials, spinning, winding, barrel dropping, bundling, drafting, curling, cutting off, loosening heat setting, packaging and the like, wherein the three-dimensional hollow polyester staple fiber with high fluffiness which has the advantages of high fluffiness, easily complete opening by wind transmission, no influence on elasticity and smoothness and convenient use can be produced by controlling the production conditions in each step.
Description
Technical field
The present invention relates to a kind of high fluffy short fiber production process, especially relate to a kind of high fluffy three-dimensional hollow terylene short fiber production process of regenerating.
Background technology
The three-dimensional hollow terylene of the regeneration that existing manufacturing condition is produced down staple fibre shrinks tightlyer, and bulkiness is not enough, the shredding difficulty, if will curl the number minimizing, fiber fluffy property can promote, but fibrous elasticity can descend again.And at present staple fibre is mainly used in fields such as filling, bedding, when the client adopts wind to send the form of shredding to carry out shredding in use usually, because of the finished product bulkiness not enough; And it is can not shredding complete; Directly back object full weight is filled in influence, influences result of use, can not meet customer need.
Summary of the invention
The objective of the invention is the deficiency to prior art, a kind of high fluffy three-dimensional hollow terylene short fiber production process of regenerating is provided, the fiber of this explained hereafter send under the shredding condition at wind and is easy to shredding, and do not influence slippery, elasticity and result of use.
For realizing above-mentioned purpose, the present invention has adopted following technical scheme:
The present invention provides a kind of high fluffy regeneration three-dimensional hollow pet staple fiber production technology, comprises drying, spinning, the bucket of reeling, fall, boundling, drawing-off, cut-out, loose HEAT SETTING and packing step.
In above-mentioned processing step, require dry run, raw material is moisture below 0.010%; In the melt spinning process, do not have oil silk viscosity between 0.640～0.645, screw extruder is respectively distinguished temperature and is done; The 1st district is between 270～280 ℃, and the 2nd district is between 280～285 ℃, and the 3rd～4 district is between 280～290 ℃; The 5th district is between 280～285 ℃, and the 6th district is between 270～280 ℃, and casing and filter temperature are 270～285 ℃; The cooling air temperature is at 18～19 ℃, and cooling air humidity is 60%～80%, and wind speed is 3.0～3.5m/s; In the winding process, winding speed is in 1500～1800m/min scope, and last oil concentration is between 0.08%～0.10%, and the profit content of precursor is controlled at 20%～25%; In the drafting process, the traction grooved temperature is between 70～75 ℃, and temperature deviation is ± 0.5 ℃, and drawing point must be controlled the position that strand gets into drawing-off oil groove 1/3; The one-level drawing-off accounts for 95～98%, and the secondary drawing-off accounts for 2%～5%.
Owing to adopted above technical scheme, the beneficial effect that the present invention is possessed is:
On existing ripe production technology, improve, simple, do not increase input and production cost.The three-dimensional hollow pet staple fiber of being produced has high fluffy, and wind send easy shredding complete, does not influence elasticity and slippery simultaneously, and is easy to use, and properties of product surpass the fiber that former raw material are produced.
The specific embodiment
Through the specific embodiment the present invention is done further explain below.
The high fluffy three-dimensional hollow terylene short fiber production process of regenerating; Raw material makes the high fluffy three-dimensional hollow terylene staple fibre of regenerating through drying, spinning, the bucket of reeling, fall, boundling, drawing-off, cut-out, loose HEAT SETTING and packing step, its concrete processing step is following:
(1) raw material drying
Raw material is through predrying, again through raw material moisture content after the drum dried below 0.010%, just can be used for spinning.The pre-dried effect of raw material has two: the first, and be preheating material, the second, be to remove raw material surface moisture content.Drum dried is to form negative pressure in the rotary drum through vacuumizing, making, and effect is to remove the raw molecule internal moisture, improves the degree of crystallinity of raw material simultaneously.
(2) melt spinning
Raw material after drying is up to standard is delivered to screw extruder and is carried out fusion, and the setting of extruder temperature must be consistent with institute's proportion raw material, and screw rod is respectively distinguished temperature and is controlled at: the 1st district: 270～280 ℃; The 2nd district: 280～285 ℃; 3-4 district: 280～290 ℃; The 5th district: 280～285 ℃; The 6th district: 270～280 ℃.Casing and filter temperature: 270～285 ℃.The actual temp of technique initialization will be a foundation with the nothing oil silk viscosity of precursor; Former raw material are little because of particle, and acrobatics content is low, are not easy degraded; So temperature control is relatively easy; And the reworked material spinning just must not have the temperature that oil silk viscosity is adjusted setting to control well, does not have oil silk viscosity and will be controlled between 0.640～0.645, and former yarn quality is in optimum state.
Melt spinning also has a most important technology controlling and process requirement except spinning temperature, be exactly the cooling condition of precursor, and this also is to produce high fluffy the regenerate CCP of three-dimensional hollow terylene staple fibre, the i.e. wind speed of the temperature of cooling air and cooling air.Therefore, the cooling air temperature must be controlled at 18-19 ℃, cooling air humidity: 60%～80%; Wind speed must be controlled at 3.0～3.5m/s.Through the realization of these spinning techniques, the precursor that makes just has certain rigid, for back processing makes the high fluffy three-dimensional terylene staple fibre of regenerating necessary condition is provided.
(3) reel
The key process parameter of coiling operation has following:
A, winding speed: the three-dimensional terylene staple fibre of common regeneration hollow winding speed is generally at 1100～1200m/min; The winding speed of three-dimensional terylene staple fibre is between 1500～1800m/min and high fluffy is regenerated; Looking the kind of different fiber numbers confirms; Because the raising of winding speed, production efficiency also can improve.
B, go up oil concentration: the last oil concentration of precursor is low as far as possible, but convergence is good again, so through repeatedly test, oily dense must being controlled between 0.08%～0.10%.
C, last oil mass: set the rotating speed of oil tanker with test precursor profit content, thereby control upward oil mass, the profit content of precursor is controlled between 20%～25%.
(4) fall the bucket, boundling
Barrel operation that falls does not have special demands, according to actual needs, has set barrel time and longer number just.The key of boundling be every barrel of silk of control uniform tension in order just.
(5) drawing-off
The CCP of drafting process has three aspects:
One, the temperature of drawing-off oil groove: generally be controlled at 70～75 ℃, and to require temperature deviation in the production process be ± 0.5 ℃;
Two, the control of drawing point: drawing point must be controlled the position that strand gets into drawing-off oil groove 1/3;
Three, the control of draw ratio and draw ratio: draw ratio is confirmed according to the coefficient that skids of cold drawn multiple of precursor and drawing machine.The production of three-dimensional hollow terylene staple fibre divides the secondary drawing-off; The one-level drawing-off accounts for 90% during common three-dimensional hollow terylene staple fibre drawing-off; The secondary drawing-off accounts for 10%; And high fluffy regenerates that three-dimensional hollow terylene staple fibre is particular about is that a step drawing-off as far as possible puts in place, so the one-level drawing-off accounts for 95～98%, the secondary drawing-off accounts for 2%～5%.
(6) curl, cut off
Because the rolled state of three-dimensional hollow core staple fibers determined by preceding spinning each operation, so mainly be control crimping machine pressure to the requirement of the technology of curling, the coefficient that skids is complementary here with drafting multiple, mainly definite by the draft speed of each production line.
Cut off: according to the demand of client, select the cut-out cutterhead of different cutter grooves, realize the length of product product length.
(7) relaxation heat setting
It mainly acts on two: the one, and the moisture content of reduction fiber makes finished fiber reach the water capacity of standard; The 2nd, make the formation three-dimensional crimp obtain solidifying, make finished fiber have certain elasticity.
(8) packing
Pressing predetermined weight packs finished fiber, identify.
On the basis of above embodiment, can form following embodiment.
Embodiment one:
Three-dimensional hollow pet staple fiber is used for large pearl cotton production technology and properties of product 4.5D high fluffy is regenerated:
One, production technology is following
(1) drying process
Raw material is removed surperficial moisture content through the drying tower preheating, after needing 1.5-2.5 hour approximately, gets into rotary drum negative pressure drying machine, removes the intramolecule crystallization water, needs after drying about 8 hours, surveys the raw material moisture content below 0.010%, promptly can be used for melt spinning.
(2) spinning technique
Screw rod is respectively distinguished temperature: the 1st district: 270 ℃; The 2nd district: 280 ℃; 3-4 district: 285 ℃; The 5th district: 280 ℃; The 6th district: 275 ℃.Casing and filter temperature: 270 ℃.Each district of screw rod and filter and spin manifold temperature have very great help to using electricity wisely and the temperature that reduces working environment than low 5～10 ℃ of common regeneration hollow terylene 3-D crimped fiber.
The precursor cooling condition: wind-warm syndrome is between 18～19 ℃, and rheumatism is between 60%～80%, and wind speed is 3.0～3.5m/s.Wind speed and air quantity reduce by 20%～30% than common regeneration hollow terylene 3-D crimped fiber, can reduce the load of motor, thereby reach the purpose of economize on electricity.
(3) reel
Winding speed cools off precursor at 1600m/min fast, makes the cooling effect at each position consistent, improves first break draft efficient and smooth and easy degree, and last oil concentration is between 0.08%～0.10%, and the last oil mass of precursor is between 20%～25%.
(4) after-processing technology is following
Two, the high fluffy of being produced by above production technology is regenerated the three-dimensional hollow pet staple fiber index contrast of three-dimensional hollow pet staple fiber bulking intensity index and elastic index and common regeneration as follows
Above content is to combine concrete embodiment to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (6)
1. a high fluffy three-dimensional hollow pet staple fiber production technology of regenerating; It is characterized in that: this technology comprises drying, spinning, the bucket of reeling, fall, boundling, drawing-off, cut-out, loose HEAT SETTING and packing step; In the said drafting process; The drawing-off oil sump temperature is between 70～75 ℃, and temperature deviation is ± 0.5 ℃ in the production process; Drawing point must be controlled the position that strand gets into drawing-off oil groove 1/3; The one-level drawing-off accounts for 95～98%, and the secondary drawing-off accounts for 2%～5%.
2. production technology as claimed in claim 1 is characterized in that: in the said spinning process, screw extruder is respectively distinguished temperature and is done; The 1st district is between 270～280 ℃; The 2nd district is between 280～285 ℃, and the 3rd～4 district is between 280～290 ℃, and the 5th district is between 280～285 ℃; The 6th district is between 270～280 ℃, and casing and filter temperature are 270～285 ℃.
3. production technology according to claim 1, it is characterized in that: in the said spinning process, the cooling air temperature is between 18～19 ℃ during the precursor cooling, and cooling air humidity is 60%～80%, and wind speed is 3.0～3.5m/s.
4. production technology as claimed in claim 1 is characterized in that: in the said dry run, through predrying, after drum dried, the raw material moisture content is below 0.010% again.
5. production technology as claimed in claim 1 is characterized in that: the speed of said coiling is in 1500～1800m/min scope, and last oil concentration is between 0.08%～0.10%, and the profit content of precursor is controlled at 20%～25%.
6. production technology as claimed in claim 1 is characterized in that: in the said spinning process, do not have oil silk viscosity between 0.640～0.645.
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| CN2010102969242A CN101967690B (en) | 2010-09-29 | 2010-09-29 | Production technique for regenerated three-dimensional hollow polyester staple fiber with high fluffiness |
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| CN2010102969242A CN101967690B (en) | 2010-09-29 | 2010-09-29 | Production technique for regenerated three-dimensional hollow polyester staple fiber with high fluffiness |
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| CN101967690A CN101967690A (en) | 2011-02-09 |
| CN101967690B true CN101967690B (en) | 2012-11-14 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277630B (en) * | 2011-07-10 | 2013-10-09 | 东华大学 | Preparation method of novel differential polyester fibers |
| CN102517661B (en) * | 2011-12-22 | 2014-10-01 | 福建鑫华股份有限公司 | Preparation method of triangular hollow dacron short fiber and spinneret plate for preparing triangular hollow dacron short fiber |
| CN102605447B (en) * | 2012-03-23 | 2014-10-22 | 杭州贝斯特化纤有限公司 | Velveteen regeneration polyester super-short fiber and production technique thereof |
| CN102618947B (en) * | 2012-04-06 | 2014-08-06 | 缪爱国 | Method for producing PTT (polytrimethylene terephthalate) spiral three-dimensional hollow fibers |
| CN102691117B (en) * | 2012-05-31 | 2015-01-07 | 福建省金纶高纤股份有限公司 | Preparation process for three-dimensional crimped hollow polyester staple fiber |
| CN104800004A (en) * | 2015-03-17 | 2015-07-29 | 肇庆天富新合纤有限公司 | Manufacturing method of basal body bearing super absorbent resin, water absorption core body and disposable sanitary product |
| CN108048942A (en) * | 2017-11-17 | 2018-05-18 | 福建闽瑞环保纤维股份有限公司 | A kind of negative ion far-infrared regeneration staple production technology |
| CN108588874A (en) * | 2018-05-21 | 2018-09-28 | 江阴市德赛环保设备有限公司 | Regenerate three-dimensional hollow spinning production line and production method |
| CN112877797A (en) * | 2021-01-11 | 2021-06-01 | 江苏杜为新材料科技有限公司 | Large-diameter nano polyethylene terephthalate three-dimensional crimped staple fiber and production method thereof |
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| CN2400460Y (en) * | 1999-12-29 | 2000-10-11 | 上海第七化学纤维厂 | Seven-hole hollow three-dimensional crimp synthetic staple |
| CN1417390A (en) * | 2002-12-10 | 2003-05-14 | 扬州广瑞毛绒有限责任公司 | Production process of nine-pore hollow 3D crimped short Dacron staple |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009191390A (en) * | 2008-02-13 | 2009-08-27 | Unitica Fibers Ltd | Recycled hollow multifilament |
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| CN2400460Y (en) * | 1999-12-29 | 2000-10-11 | 上海第七化学纤维厂 | Seven-hole hollow three-dimensional crimp synthetic staple |
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Effective date of registration: 20190124 Address after: 526020 Office Building of Duanzhou Balu Chemical Fiber Factory, Zhaoqing City, Guangdong Province Patentee after: Zhaoqing Junrong Nonwovens Co.,Ltd. Address before: 526020 No. 18 Duanzhou Eighth Road, Zhaoqing City, Guangdong Province Patentee before: Zhaoqing Tifo New Fiber Co.,Ltd. |
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