CN101654814A - Side-by-side elastic fiber and production method thereof - Google Patents
Side-by-side elastic fiber and production method thereof Download PDFInfo
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- CN101654814A CN101654814A CN200810211104A CN200810211104A CN101654814A CN 101654814 A CN101654814 A CN 101654814A CN 200810211104 A CN200810211104 A CN 200810211104A CN 200810211104 A CN200810211104 A CN 200810211104A CN 101654814 A CN101654814 A CN 101654814A
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Abstract
The invention discloses a side-by-side elastic fiber and a production method thereof. The fiber is a bicomponent composite polyester fiber in an A/B side-by-side form, wherein the A component is polybutylene terephthalate with the inherent viscosity between 1.0 and 1.5; the B component is polybutylene terephthalate with the inherent viscosity between 0.5 and 1.0; and the inherent viscosity difference between the A component and the B component is between 0.3 and 0.6. A side-by-side composite spinning component is subjected to melt spinning and then subjected to extended processing or false twisting processing to prepare the bicomponent polyester fiber with elasticity. The side-by-side elastic fiber has excellent spinnability and post-processing property, and simultaneously has excellent crimp contraction, handfeel and comfort property and wide application. Moreover, the preparation method has low cost and easy operation.
Description
Technical field:
The present invention relates to a kind of bi-component side-by-side elastic fiber and production method.
Background technology:
The production technology that is the bicomponent fiber of A/B form arranged side by side starts from the later stage eighties in last century, but progress is comparatively slow.Entered since 21 century, side-by-side elastic fiber is subjected to people and more and more pays close attention to, and has also occupied very important position gradually in the chemical fibre field.The bi-component side-by-side elastic fiber has from crimp property, and more precisely, this is not need to add bullet to handle from crimp property, is nonvolatil.Have different shrinkage factors based on these polyester fiber both sides, can produce spiral three-dimensional crimp, so its advantage is that bulkiness is big that elasticity and recovery are good, feel is good.
Certainly the condition of curling of side-by-side elastic fiber is that two kinds of components have difference in the fiber on shrinkage factor, contractility and elastic modelling quantity, thereby causes certain crimp potential.China publication CNCN200710070315.3 discloses a kind of technology of producing elastic polyester fibre, will have the high polymer of thermal contraction performance difference such as height and shrink in polyethylene terephthalate, polyethylene terephthalate, polybutylene terephthalate, the polytrimethylene terephthalate two kinds and obtain the bicomponent elastic fiber by composite spinning.But because be that two kinds of different types of components stick together, compare with similar component fibers and have compatibility and rheological characteristic is bad and the more high shortcoming of production cost.
People are also considering to utilize relative viscosity different thereby have the homogeneous groups of shrinking rate variance and assign to develop the bi-component side-by-side elastic fiber, and are superior to elasticity and recovery to satisfy market, and feel, comfortableness are good, the demand of the collateral fiber that production cost is lower.
Summary of the invention:
The object of the invention is to provide a kind of elasticity and recovery superior, feel, side-by-side elastic fiber and production method that comfortableness is good.
Technical solution of the present invention is:
A kind of bi-component side-by-side elastic fiber, it is characterized in that, be that 1.0～1.5 polybutylene terephthalate (PBT) is as the A component with intrinsic viscosity, be that 0.5～1.0 polybutylene terephthalate (PBT) is as the B component with intrinsic viscosity, through being composited side by side, and the intrinsic viscosity difference of two components is 0.3～0.6.
The A weight percentages of components is 40%～80% in this bicomponent polyester fiber, and the B weight percentages of components is 60%～20%.
The preparation method of side-by-side elastic fiber of the present invention comprises the steps:
With dried intrinsic viscosity is that section of 1.0～1.5 polybutylene terephthalate (PBT) and dried intrinsic viscosity are that 0.5～1.0 polybutylene terephthalate (PBT) section is respectively as A, B component input bi-component composite spinning machine, through the screw extruder fusion, extrude, send into casing, after the measuring pump metering, import filament spinning component more respectively jointly, the melt that mixes in the filament spinning component sprays from spinnerets, behind the lateral blowing cooling forming, oil, interlacing, batch, carry out DTY or FDY processing again, obtain side-by-side elastic fiber.
The melt extruded process of A component screw extruder is provided with 3～5 sections thermals treatment zone, and the heating-up temperature in each district is located between 260～290 ℃; The melt extruded process of B component screw extruder is provided with 3～5 sections thermals treatment zone, and the heating-up temperature in each district is located between 260～290 ℃, and the coiling speed of spinning is 1500-4500m/min; DTY adds man-hour, and stretching ratio is that 1.35～4.0, one heater temperature is 50 ℃～100 ℃, and two heater temperatures are 90～170 ℃; FDY adds man-hour, and stretching ratio is that 1.35～4.0, one heat roller temperature is 50 ℃～100 ℃, and two heater temperatures are 90～170 ℃.
Side-by-side elastic fiber elongation at break of the present invention is more than 30%, and fracture strength is more than the 2.5cN/dtex, and flexible percentage elongation is 25%～65%, and the telescopic resilience rate is 75%～95%.
Because bi-component polymeric thermal contraction performance provided by the present invention has certain difference, and the compatibility of this bi-component and rheological characteristic are all proper, therefore described side-by-side elastic fiber has the better spinnability energy under suitable controlled condition, in addition, this side-by-side elastic fiber also has good processability; Side-by-side elastic fiber of the present invention also has taking preferably, and can satisfy the requirement of doing further processing.Preparation method's technological process of production of the present invention is short, and manufacturing procedure is few, and production cost is low, easy operating.
The assay method of flexible percentage elongation and telescopic resilience rate: get the sample of yarn by the dipping machine, then sample is put into Water Tank with Temp.-controlled and handle.The heat treatment loading is that 0～4mg/dtex, tank temperature are 90 ℃, and heat treatment time is 20 minutes.Handling back sample is 20 ℃ in temperature, and humidity is 40% following the placement 24 hours of environment.The sample of placing after handling is hung loading 2mg/dtex just, measures length L after 30 seconds
0, take off loading just, change true length mensuration and use loading 100mg/dtex, measure length L after 30 seconds
1, take off true length mensuration and use loading, change elastic recovery mensuration and use loading 2mg/dtex, measure length L after 30 seconds
2, according to formula " flexible percentage elongation (%)=(L
1-L
0)/L
0* 100 " and " telescopic resilience rate (%)=(L
1-L
2)/(L
1-L
0) * 100 " calculate flexible percentage elongation and telescopic resilience rate.Surveying three groups simultaneously averages.
The invention will be further described below in conjunction with embodiment.
The specific embodiment:
Embodiment 1:
With dried intrinsic viscosity is that the section of 1.35 polybutylene terephthalate (PBT) is the A component raw material, drop into first screw extruder, but become the polyester fondant of spinning through the melt extruded of first screw extruder, the melt extruded process of first screw extruder is provided with 5 sections thermals treatment zone, the heating-up temperature in each district is made as 260 ℃, 270 ℃, 278 ℃, 282 ℃, 286 ℃, and this polyester fondant is transported in the spinning manifold, and further be evenly distributed in the bi-component composite component, extrude by 40% weight portion, simultaneously, with dried intrinsic viscosity is that the section of 0.75 polybutylene terephthalate (PBT) is as the B component, drop into second screw extruder, but become the polyester fondant of spinning through the melt extruded of second screw extruder, the melt extruded process of second screw extruder is provided with 5 sections thermals treatment zone, the heating-up temperature in each district is made as 270 ℃, 280 ℃, 286 ℃, 288 ℃, 290 ℃, and this polyester fondant is transported in the spinning manifold, and further be evenly distributed in the bi-component composite component, extrude by 60% weight portion; The A that extrudes in the composite component, B component, through lateral blowing cooling forming (lateral blowing wind speed 25m/min), to oil nozzle (the finish title SN-650 that oils, oil concentration 13%, finish adhesive rate 0.9%), by the path, be 1.6 through pre-winding apparatus interlacing (press pneumatics power 0.08MPa) and at extension ratio, one heat roller temperature is 90 ℃, two heat roller temperatures are to extend processing (FDY) under 130 ℃, promptly get described side-by-side elastic fiber; Gained silk elongation at break side by side is 31.2%, and fracture strength is 2.55cN/dtex, and flexible percentage elongation is 28.4%, and the telescopic resilience rate is 93.6%.
Embodiment 2:
With dried intrinsic viscosity is that the section of 1.0 polybutylene terephthalate (PBT) is the A component raw material, extruding by 60% weight portion, simultaneously, is that the section of 0.6 polybutylene terephthalate (PBT) is the B component raw material with dried intrinsic viscosity, extrude by 40% weight portion, all the other are with embodiment 1; Gained silk elongation at break side by side is 32.2%, and fracture strength is 2.61cN/dtex, and flexible percentage elongation is 49.3%, and the telescopic resilience rate is 88.1%.
Embodiment 3:
With dried intrinsic viscosity is that the section of 1.5 polybutylene terephthalate (PBT) is the A component raw material, extrude by 80% weight portion, simultaneously, with dried intrinsic viscosity is that the section of 1.0 polybutylene terephthalate (PBT) is the B component raw material, extrude by 20% weight portion, the A that extrudes in the composite component, the B component, through lateral blowing cooling forming (lateral blowing wind speed 28m/min), to oil nozzle (the finish title SN-650 that oils, oil concentration 13%, finish adhesive rate 0.9%), pass through the path, up-coiler coiling (coiling speed is 4200m/min) obtains bicomponent polyester fiber preliminary draft silk; The bicomponent polyester fiber preliminary draft silk of gained is that 1.8, one heater temperatures are 90 ℃ at extension ratio, and two heat roller temperatures are to carry out false twisting processing (DTY) under 130 ℃, promptly get described side-by-side elastic fiber; Gained silk elongation at break side by side is 31.7%, and fracture strength is 2.68cN/dtex, and flexible percentage elongation is 61.6%, and the telescopic resilience rate is 81.7%.
Claims (6)
1, a kind of side-by-side elastic fiber, it is characterized in that: this fiber is the bi-component composite polyester fiber of a kind of A/B of being form arranged side by side, wherein the A component is that intrinsic viscosity is that 1.0～1.5 polybutylene terephthalate (PBT), B component are that intrinsic viscosity is 0.5～1.0 polybutylene terephthalate (PBT), and both intrinsic viscosity differences are 0.3～0.6.
2, side-by-side elastic fiber according to claim 1 is characterized in that: the percentage by weight of two kinds of components is in the bicomponent polyester fiber: the A component is 40%～80%, and the B component is 60%～20%.
3, side-by-side elastic fiber according to claim 1 is characterized in that: the flexible percentage elongation of described side-by-side elastic fiber is 25%～65%, and the telescopic resilience rate is 75%～95%.
4, a kind of production method of side-by-side elastic fiber is characterized in that: the method by the following step is made:
With dried intrinsic viscosity is that section of 1.0～1.5 polybutylene terephthalate (PBT) and dried intrinsic viscosity are that 0.5～1.0 polybutylene terephthalate (PBT) section is respectively as A, B component input bi-component composite spinning machine, through the screw extruder fusion, extrude, send into casing, after the measuring pump metering, import filament spinning component more respectively jointly, the melt that mixes in the filament spinning component sprays from spinnerets, behind the lateral blowing cooling forming, obtain nascent side-by-side elastic fiber.
5, the production method of side-by-side elastic fiber according to claim 4 is characterized in that: the melt extruded process of A component screw extruder is provided with 3～5 sections thermals treatment zone, and the heating-up temperature in each district is located between 260～290 ℃; The melt extruded process of B component screw extruder is provided with 3～5 sections thermals treatment zone, and the heating-up temperature in each district is located between 260～290 ℃, and the coiling speed of spinning is 1500-4500m/min.
6, the production method of side-by-side elastic fiber according to claim 4 is characterized in that: nascent side-by-side elastic fiber directly obtains side-by-side elastic fiber FDY after extending processing, or is processed into side-by-side elastic fiber DTY through false twisting again after batching.False twisting adds man-hour, and stretching ratio is that 1.35～4.0, one heater temperature is 50 ℃～100 ℃, and two heater temperatures are 90～170 ℃; Extension adds man-hour, and stretching ratio is that 1.35～4.0, one heat roller temperature is 50 ℃～100 ℃, and two heat roller temperatures are 90～170 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200810211104 CN101654814B (en) | 2008-08-21 | 2008-08-21 | Side-by-side elastic fiber and production method thereof |
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|---|---|---|---|
| CN 200810211104 CN101654814B (en) | 2008-08-21 | 2008-08-21 | Side-by-side elastic fiber and production method thereof |
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| CN101654814A true CN101654814A (en) | 2010-02-24 |
| CN101654814B CN101654814B (en) | 2013-03-06 |
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| CN 200810211104 Expired - Fee Related CN101654814B (en) | 2008-08-21 | 2008-08-21 | Side-by-side elastic fiber and production method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141178A (en) * | 2014-07-31 | 2014-11-12 | 江苏盛虹科技股份有限公司 | Elastic PET composite fiber and method for preparing elastic PET composite fiber |
| CN106337212A (en) * | 2016-08-30 | 2017-01-18 | 无锡市兴盛新材料科技有限公司 | Side-by-side composite PBT polyester fiber and preparation method thereof |
| CN110241479A (en) * | 2019-06-12 | 2019-09-17 | 佛山新晟泰新材料技术有限公司 | A kind of permanent curl Europe root yarn and preparation method thereof |
| CN110983465A (en) * | 2019-12-24 | 2020-04-10 | 江苏恒力化纤股份有限公司 | Method for preparing self-curling elastic combined filament yarn for knitting |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110129903A (en) * | 2019-04-29 | 2019-08-16 | 吴江精美峰实业有限公司 | The production method and device of thick denier filament fiber |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998044178A1 (en) * | 1997-03-31 | 1998-10-08 | Toray Industries, Inc. | Crimped yarn, textile fabric, and process for preparing the same |
| CN1059719C (en) * | 1998-09-07 | 2000-12-20 | 东华大学 | Preparation of composite porous hollow stereo crimped fiber with side-by-side bicomponent |
| CN100359057C (en) * | 2004-11-10 | 2008-01-02 | 新光合成纤维股份有限公司 | Self-crinkling composite fiber and producing method thereof |
-
2008
- 2008-08-21 CN CN 200810211104 patent/CN101654814B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141178A (en) * | 2014-07-31 | 2014-11-12 | 江苏盛虹科技股份有限公司 | Elastic PET composite fiber and method for preparing elastic PET composite fiber |
| CN106337212A (en) * | 2016-08-30 | 2017-01-18 | 无锡市兴盛新材料科技有限公司 | Side-by-side composite PBT polyester fiber and preparation method thereof |
| CN110241479A (en) * | 2019-06-12 | 2019-09-17 | 佛山新晟泰新材料技术有限公司 | A kind of permanent curl Europe root yarn and preparation method thereof |
| CN110983465A (en) * | 2019-12-24 | 2020-04-10 | 江苏恒力化纤股份有限公司 | Method for preparing self-curling elastic combined filament yarn for knitting |
| CN110983465B (en) * | 2019-12-24 | 2021-12-21 | 江苏恒力化纤股份有限公司 | Method for preparing self-curling elastic combined filament yarn for knitting |
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| CN101654814B (en) | 2013-03-06 |
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