CN103590140A - Linen-imitative multiple and multi-differential composite short fiber and manufacturing method thereof - Google Patents
Linen-imitative multiple and multi-differential composite short fiber and manufacturing method thereof Download PDFInfo
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Abstract
The invention relates to linen-imitative multiple and multi-differential composite short fiber and a manufacturing method thereof. The linen-imitative multiple and multi-differential composite short fiber comprises 40-60 percent by weight of high-viscosity polyester chips having the viscosity of 0.90-0.95dl/g and 40-60 percent by weight of low-viscosity polyester chips having the viscosity of 0.42-0.45dl/g, wherein the high-viscosity chips consist of high-shrinkage chips and conventional polyether chips, and the expansion and shrinkage property, namely the dry shrinking percentage of the high-shrinkage chips and the conventional polyether chips is (2:1)-(7:1). As 0.48-0.50dl/g of viscosity difference exists between the high-viscosity composite components and the low-viscosity polyether, the linen-imitative multiple and multi-differential composite short fiber can generate more and dense permanent self-curling twists, and the viscosity difference is enough to provide strong power for self-curling; in addition, due to the existence of the high-shrinkage components, power required by self-curling can be reduced, thus more and dense self-curling twists can be formed and the requirements required by a super linen-imitative style can be met.
Description
Technical field
The present invention relates to a kind of polyester staple fiber production technology in textile material field, related in particular to a kind of how different composite short fiber manufacture of novel multiple with super imitative numb effect.
Background technology
The short fiber that the linnet occurring on existing market is used, mostly be to be made by one-component spinning, drawing-off, its imitative numb effect is mainly to form by add the external physical effect of heavy twist to fiber, rather than realizing from the curling twist mechanism of action by fiber inherence.Its major defect is to form the required very obvious concavo-convex node of imitative fiber crops and good may just as well hanging down, so the imitative numb immediate effect performance of its fabric is poor, and imitative numb effect persistence is poor.The cross section of existing linnet, adopts circular cross-section more, thus moisture absorbing and sweat releasing and permeability also poor.
From finding out the analysis of 200710191330.3 inventions: relate to a kind of imitative numb process technology of generalization fiber cotton type short fiber yarn, it be adopt by common cotton staple by general processing method be spun into pure spin or blended fibre knitwears yarn after this yarn is carried out to heavy twist processing technical scheme.The method adopts physics to add the mode of heavy twist, compares with natural fiber crops, has good dyeability; There is certain concave-convex sense node and drapability simultaneously, but do not reach imitative numb effect, also do not realize permanent imitative fiber crops.In addition, employing be ordinary polyester short fiber, cross sectional shape is circular, moisture adsorption and releasing function and permeability are all poor.
From finding out the analysis of 200510030314.7 inventions: relate to the spinning engineering caused by spinning industrial production, particularly imitation linen blended yarn and manufacture method thereof.The technical scheme of this invention is to use special-shaped heavy denier polyester fiber cross section to have flax feature and other fiber optimum organization spinning blended yarn.The linnet that the method makes, has certain moisture absorbing and sweat releasing and ventilative function, has good dyeability simultaneously; But imitative numb concavo-convex node is not obvious, and outstanding may just as well poor.
Up to the present, also do not occur a kind ofly for permanent super imitative numb short fiber on market, how the multiple how different composite construction of its inherence can produce and close forever from the curling twist, thereby numb required very obvious concavo-convex node is imitated in formation; There is the performances such as fine drapability, smoothness, gas permeability and moisture absorbing and sweat releasing simultaneously, reach real imitative numb effect, restricted the exploitation of high-grade clothing, family textile fabric product.
Summary of the invention
The object of the invention is to prepare the imitative flax fibre of the how different composite construction of a kind of novel multiple, it is possessed good may just as well hang down, the performance such as gas permeability and moisture absorbing and sweat releasing, be widely used in high-grade clothing, family is spun etc. on fabric.
The technical solution used in the present invention is for this reason: the present invention includes:
Polyester slice with high viscosity viscosity is in 0.90-0.95dl/g weight portion 40%-60%;
Low-viscosity polyester intrinsic viscosity is in 0.42-0.45dl/g weight portion 40%-60%;
Wherein polyester slice with high viscosity is cut into slices and is formed by height contraction section and normal polyester, and high contraction is cut into slices and the harmomegathus of normal polyester section do shrinkage factor size ratio between 2:1 ~ 7:1.
The high range of viscosities that shrinks section is 0.55 ~ 0.75 dl/g, and fusing point is 240-250 ℃;
The range of viscosities of low-viscosity polyester section is 0.42 ~ 0.45dl/g, and fusing point is 255-265 ℃;
The range of viscosities of normal polyester section is 0.65 ~ 0.70 dl/g, and fusing point is 255-265 ℃.
Wherein high contraction section: normal polyester section=10%-15%:85%-90%.
A manufacture method for the multiple how different compound short fiber of imitative linen look, according to following steps, carry out:
1) height is shunk to section, by the addition of 10% ~ 15% weight portion, be evenly blended in normal polyester section and form compound material, by tackifying equipment, this compound material is evenly stated to 0.90 ~ 0.95dl/g, fusing point is about 272 ℃;
2) low-viscosity polyester section, the compound material of high viscosity, after crystallization, dry, Screw Extrusion, enter spinning manifold, and converge ejection through spinnerets;
3), from spinnerets spun filament out, through slow cooling, ring dry, oil, reel traction, feeding, Sheng thread, obtain tow;
4) by tow through drawing-off, curling, sizing, cut off, packing, finally obtain the how different compound short fiber of this novel multiple.
Step 2) in, the screw extruder design temperature of low-viscosity polyester is between 275 ℃ ~ 295 ℃, and the spinning temperature of low-viscosity polyester is set between 285 ℃ ~ 295 ℃.
Step 2) in, the screw extruder design temperature of high viscosity composite components is between 285 ℃ ~ 320 ℃, and the spinning temperature of high viscosity composite components is set between 295 ℃ ~ 320 ℃.
Step 3) in, low-viscosity polyester component and compound material component adopt respectively two groups independently biphenyl heating system heat, guarantee the melt temperature of each component, by measuring pump, spinning manifold and figure of eight spinnerets, form spun filament, quench air velocity degree 0.5 ~ 1.5m/s, 15 ~ 30 ℃ of ring blowing temperature, ring blowing humidity 60 ~ 90%, carry out cooling, solidify, adopt oil tanker to oil, spinning speed is 600 ~ 1200m/min.
In step 4), tow total draft multiple is between 2.5 ~ 3.8, and the first drawing-off accounts for 85%, the second drawing-off and accounts for 15%, draw speed 250 ~ 350m/min; Wherein the temperature of immersion cell is at 35 ~ 85 ℃, and the bath temperature of drawing-off groove is at 80 ~ 100 ℃, and the vapor (steam) temperature of heating cabinet is at 105 ~ 160 ℃, 100 ~ 130 ℃ of the setting temperatures of relaxation heat setting machine.
Described spinnerets is " 8 " font.
Advantage of the present invention is: 1) high contraction cut into slices: in the large molecule of PET, introduce copolymerizing modifier, to reduce the crystallization composition in polyester molecule, increase amorphous regions, finally make fiber reach the low crystallization of high orientation, and produce the effect of shrinking, because chemical modification effect has changed molecular structure, can make good permanent high-shrinkage fibre, the long filament, the staple fibre that can be used for spinning all size, boiling water shrinkage can be controlled between 20%～70%; The increase of unformed component, is conducive to dye molecule and enters, and is easy to dye painted; 2) normal polyester section: its ester group and phenyl ring form the integral body of conjugation, soft segment can not rotate separately, together with can only making a common integral body with phenyl ring, vibrate, therefore PET macromolecular chain shows very large rigidity, for forming, many close from the curling twist, provide rigid backbone, provide to form simultaneously and there is drapability from the required differences in viscosity power ，Shi Hou road fabric of the curling twist.3) low-viscosity polyester section: on the basis of normal polyester section, by adding comonomer, reach the viscosity that reduces section, provide differences in viscosity power for forming from the curling twist; 4) cross sectional shape of the how different compound short fiber of this novel multiple is " 8 " font, adopts " 8 " font filament spinning component, through composite spinning, drawing-off, makes.It compared with similar products, can produce inherent many and close forever from the curling twist, thereby can form the very obvious concavo-convex node numb together, and drapability and smoothness fine; The use of " 8 " font filament spinning component simultaneously, forms the groove with capillary core sucting action at fiber surface, can reach good moisture absorbing and sweat releasing and ventilative effect; Owing to containing high contraction and low-viscosity polyester component, so dyeability is very good, color and luster is beautiful, is suitable for conventional textile dyeing and finishing processing.
Why the present invention can produce many and close forever from the curling twist, is owing to there being general 0.48 ~ 0.50dl/g differences in viscosity between full-bodied compound material component and low-viscosity polyester, and this differences in viscosity is enough to for providing powerful power from curling; In addition, the existence of high shrinkage component, can reduce and form from curling needed power, thereby more than forming and close from the curling twist, to reach the needed requirement of super imitative leprosy lattice.
The specific embodiment:
Below in conjunction with specific embodiment, further set forth the present invention, should understand these embodiment only for the present invention is described, and be not used in, limit the scope of the invention.
Embodiment 1:
(1) take consumption as 40% weight portion low-viscosity polyester section be the first raw material A, enter crystallizing bed and drying tower, material is carried out to continuous crystallisation, dry, make the dry section of low-viscosity polyester of moisture content < 30ppm, enter the first screw extruder, melt extruded becomes can spinning polyester fondant, the melt extruded process of the first screw extruder is provided with five sections of thermals treatment zone, the heating-up temperature in each district is 275 ℃, 285 ℃, 287 ℃, 289 ℃, 290 ℃ (five district's screw rods), and this polyester fondant is transported in spinning manifold and (at the first screw extruder to polyester fondant between spinning manifold, passes through prefilter, large granular impurity in polyester fondant is removed), and be further evenly distributed in parallel type composite component and go, it is the first component.
(2) take consumption accounts for 10% ~ 15% as the high sticky high shrinkage rates of compound slice raw material B(of 60% weight portion), enter material continuous drying tower, make the sticky composite dry section of height of moisture content < 40ppm, then enter the second screw extruder, through the melt extruded of the second screw extruder become can spinning the sticky compounding flux of height, the melt extruded process of the second screw extruder is provided with five sections of thermals treatment zone, the heating-up temperature in each district is 285 ℃, 295 ℃, 300 ℃, 305 ℃, 310 ℃ (five district's screw rods), and the sticky compounding flux of this height is transported in spinning manifold, and be further evenly distributed in parallel type composite component, it is the second component.
(3) spun filament of moulding in parallel type composite spining module is evenly extruded, through annealing device, ring blowing (cooling forming), oil feeding system (oiling), by spinning shaft, entered into coiling traction, feeding-wheel, fiber barrel, obtain tow.
(4) tow in fiber barrel is passed through to creel successively, silk guide frame, eight roller guiding machines, immersion cell (temperature of oil groove is at 35 ~ 85 ℃), slubbing seven roller drawing machines, water-bath drawing-off groove (temperature of water-bath is at 80 ~ 100 ℃), two road seven roller drawing machines, steam heating box (vapor (steam) temperature is at 105 ~ 160 ℃), three road seven roller drawing machines, folded silk machine, crimping machine, conveyer, relaxation heat setting machine (100 ~ 130 ℃ of setting temperatures), traction tension machine, cutting machine, send cotton blower fan, baling press.Wherein, total draft multiple is between 2.5 ~ 3.8, and the first drawing-off accounts for 85%, the second drawing-off and accounts for 15%, draw speed 250 ~ 350m/min.
The how different composite fibre of this novel multiple, its fracture strength >=2.5CN/dtex, elongation at break between 15 ~ 30%, yarn unevenness CV value < 1.5%, xeothermic CR is more than 30%.
Embodiment 2:
The low-viscosity polyester section that the consumption of take is 50% weight portion is the first raw material, and the compound section of high viscosity that the consumption of take is 50% weight portion is the second raw material, and all the other are with embodiment 1.
Embodiment 3:
The low-viscosity polyester section that the consumption of take is 60% weight portion is the first raw material, and the compound section of high viscosity that the consumption of take is 40% weight portion is the second raw material, and all the other are with embodiment 1.
Claims (9)
1. the multiple how different compound short fiber of imitative linen look, is characterized in that, comprising:
Polyester slice with high viscosity viscosity is in 0.90-0.95dl/g weight portion 40%-60%;
Low-viscosity polyester intrinsic viscosity is in 0.42-0.45dl/g weight portion 40%-60%;
Wherein polyester slice with high viscosity is cut into slices and is formed by height contraction section and normal polyester, and high contraction is cut into slices and the harmomegathus of normal polyester section do shrinkage factor size ratio between 2:1 ~ 7:1.
2. the multiple how different compound short fiber of a kind of imitative linen look according to claim 1, is characterized in that,
The high range of viscosities that shrinks section is 0.55 ~ 0.75 dl/g, and fusing point is 240-250 ℃;
The range of viscosities of low-viscosity polyester section is 0.42 ~ 0.45dl/g, and fusing point is 255-265 ℃;
The range of viscosities of normal polyester section is 0.65 ~ 0.70 dl/g, and fusing point is 255-265 ℃.
3. the multiple how different compound short fiber of imitative linen look, is characterized in that, wherein high contraction section: normal polyester section=10% ~ 15% weight portion: 85% ~ 90% weight portion.
4. a manufacture method for the multiple how different compound short fiber of imitative linen look, is characterized in that, according to following steps, carries out:
1) height is shunk to section, by the addition of 10% ~ 15% weight portion, be evenly blended in normal polyester section and form compound material, by tackifying equipment, this compound material is evenly stated to 0.90 ~ 0.95dl/g, fusing point is about 272 ℃;
2) low-viscosity polyester section, the compound material of high viscosity, after crystallization, dry, Screw Extrusion, enter spinning manifold, and through the compound ejection of spinnerets;
3), from spinnerets spun filament out, through slow cooling, ring dry, oil, reel traction, feeding, Sheng thread, obtain tow;
4) by tow through drawing-off, curling, sizing, cut off, packing, finally obtain the how different compound short fiber of this novel multiple.
5. the manufacture method of the multiple how different compound short fiber of a kind of imitative linen look according to claim 4, it is characterized in that, step 2) in, the screw extruder design temperature of low-viscosity polyester is between 275 ℃ ~ 295 ℃, and the spinning temperature of low-viscosity polyester is set between 285 ℃ ~ 295 ℃.
6. the manufacture method of the multiple how different compound short fiber of a kind of imitative linen look according to claim 4, it is characterized in that, step 2) in, the screw extruder design temperature of high viscosity composite components is between 285 ℃ ~ 320 ℃, and the spinning temperature of high viscosity composite components is set between 295 ℃ ~ 320 ℃.
7. the manufacture method of the multiple how different compound short fiber of a kind of imitative linen look according to claim 4, it is characterized in that, step 3) in, low-viscosity polyester component and compound material component adopt respectively two groups independently biphenyl heating system heat, guarantee the melt temperature of each component, by measuring pump, spinning manifold and figure of eight spinnerets, form spun filament, quench air velocity degree 0.5 ~ 1.5m/s, 15 ~ 30 ℃ of ring blowing temperature, ring blowing humidity 60 ~ 90%, carry out cooling, solidify, adopt oil tanker to oil, spinning speed is 600 ~ 1200m/min.
8. the manufacture method of the multiple how different compound short fiber of a kind of imitative linen look according to claim 4, is characterized in that, in step 4), tow total draft multiple is between 2.5 ~ 3.8, and the first drawing-off accounts for 85%, the second drawing-off and accounts for 15%, draw speed 250 ~ 350m/min; Wherein the temperature of immersion cell is at 35 ~ 85 ℃, and the bath temperature of drawing-off groove is at 80 ~ 100 ℃, and the vapor (steam) temperature of heating cabinet is at 105 ~ 160 ℃, 100 ~ 130 ℃ of the setting temperatures of relaxation heat setting machine.
9. the manufacture method of the multiple how different compound short fiber of a kind of imitative linen look according to claim 4, is characterized in that, described spinnerets is figure of eight eyelet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310483761.2A CN103590140B (en) | 2013-10-16 | 2013-10-16 | A kind of imitative multiple polyisocyanate of linen look is combined short fibre and manufacture method thereof |
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| CN201310483761.2A CN103590140B (en) | 2013-10-16 | 2013-10-16 | A kind of imitative multiple polyisocyanate of linen look is combined short fibre and manufacture method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109680349A (en) * | 2018-12-25 | 2019-04-26 | 南通新帝克单丝科技股份有限公司 | Composite spinning squeezes out unit |
| CN109853058A (en) * | 2018-12-28 | 2019-06-07 | 广东省化学纤维研究所 | Different composite fibre of a kind of "-" type three and preparation method thereof |
| CN111101211A (en) * | 2019-12-31 | 2020-05-05 | 深圳市宏翔新材料发展有限公司 | X-shaped fiber and preparation method thereof |
| CN111270323A (en) * | 2020-04-01 | 2020-06-12 | 广东省化学纤维研究所 | Preparation method of self-crimping terylene FDY fiber and prepared terylene FDY fiber |
| CN115522282A (en) * | 2022-10-25 | 2022-12-27 | 四川汇维仕化纤有限公司 | Antimony-free composite spinning hollow polyester fiber and preparation method thereof |
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| CN1944730A (en) * | 2005-10-08 | 2007-04-11 | 上海日舒棉纺织厂 | Imitation linen blended yarn and its producing method |
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| CN103225118A (en) * | 2013-03-27 | 2013-07-31 | 嘉兴学院 | Side by side composite fiber spinneret plate, method of preparing three-dimensional crimp antibacterial fiber with spinneret plate and application of three-dimensional crimp antibacterial fiber |
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Patent Citations (3)
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| CN1944730A (en) * | 2005-10-08 | 2007-04-11 | 上海日舒棉纺织厂 | Imitation linen blended yarn and its producing method |
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| CN103225118A (en) * | 2013-03-27 | 2013-07-31 | 嘉兴学院 | Side by side composite fiber spinneret plate, method of preparing three-dimensional crimp antibacterial fiber with spinneret plate and application of three-dimensional crimp antibacterial fiber |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109680349A (en) * | 2018-12-25 | 2019-04-26 | 南通新帝克单丝科技股份有限公司 | Composite spinning squeezes out unit |
| CN109853058A (en) * | 2018-12-28 | 2019-06-07 | 广东省化学纤维研究所 | Different composite fibre of a kind of "-" type three and preparation method thereof |
| CN109853058B (en) * | 2018-12-28 | 2022-03-18 | 广东省化学纤维研究所 | In-line type three-difference composite fiber and preparation method thereof |
| CN111101211A (en) * | 2019-12-31 | 2020-05-05 | 深圳市宏翔新材料发展有限公司 | X-shaped fiber and preparation method thereof |
| CN111270323A (en) * | 2020-04-01 | 2020-06-12 | 广东省化学纤维研究所 | Preparation method of self-crimping terylene FDY fiber and prepared terylene FDY fiber |
| CN111270323B (en) * | 2020-04-01 | 2021-10-01 | 广东省化学纤维研究所 | Preparation method of self-crimping terylene FDY fiber and prepared terylene FDY fiber |
| CN115522282A (en) * | 2022-10-25 | 2022-12-27 | 四川汇维仕化纤有限公司 | Antimony-free composite spinning hollow polyester fiber and preparation method thereof |
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