CN101654814B - 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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- CN101654814B CN101654814B CN 200810211104 CN200810211104A CN101654814B CN 101654814 B CN101654814 B CN 101654814B CN 200810211104 CN200810211104 CN 200810211104 CN 200810211104 A CN200810211104 A CN 200810211104A CN 101654814 B CN101654814 B CN 101654814B
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- side elastic
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- polybutylene terephthalate
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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 subject to people and more and more pays close attention to, and has also occupied gradually very important position 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 process 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 large, elasticity and recovery are good, and feel is good.
Side-by-side elastic fiber be that two kinds of components have difference at shrinkage factor, contractility and elastic modelling quantity in the fiber from curling condition, thereby cause 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, the shortcoming such as have compatibility with the Fiber Phase ratio of similar component and rheological characteristic is bad and production cost is higher.
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 with satisfying the 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, take the polybutylene terephthalate (PBT) of intrinsic viscosity as 1.0～1.5 as the A component, take the polybutylene terephthalate (PBT) of intrinsic viscosity as 0.5～1.0 as the B component, through being composited side by side, and the intrinsic viscosity of two components poor be 0.3～0.6.
The A weight percentages of components is that 40%～80%, B weight percentages of components is 60%～20% in this bicomponent polyester fiber.
The preparation method of side-by-side elastic fiber of the present invention comprises the steps:
Be that the 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 two component combined spinning machine with dried intrinsic viscosity, through the screw extruder melting, extrude, send into casing, after the measuring pump metering, jointly input respectively again filament spinning component, the melt that mixes in the filament spinning component sprays from spinnerets, behind the lateral blowing cooling forming, oil, interlacing, batch, carry out again DTY or FDY processing, 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 good spinning property 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 preferably taking, 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 process.The heat treatment loading is that 0～4mg/dtex, tank temperature are 90 ℃, and heat treatment time is 20 minutes.Sample is 20 ℃ in temperature after processing, and humidity is to place 24 hours under 40% the environment.The sample of placing after processing is hung just loading 2mg/dtex, measures length L after 30 seconds
0, take off just loading, 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 simultaneously three groups averages.
The invention will be further described below in conjunction with embodiment.
The specific embodiment:
Embodiment 1:
Cut into slices as the A component raw material take dried intrinsic viscosity as 1.35 polybutylene terephthalate (PBT), drop into the first screw extruder, but become the polyester fondant of spinning through the melt extruded of the first screw extruder, the melt extruded process of the 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, cut into slices as the B component take dried intrinsic viscosity as 0.75 polybutylene terephthalate (PBT), drop into the second screw extruder, but become the polyester fondant of spinning through the melt extruded of the second screw extruder, the melt extruded process of the 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 carry out deep processing (FDY) under 130 ℃, namely get described side-by-side elastic fiber; Gained side by side silk elongation at break 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:
Cut into slices as the A component raw material take dried intrinsic viscosity as 1.0 polybutylene terephthalate (PBT), extrude by 60% weight portion, simultaneously, cut into slices as the B component raw material take dried intrinsic viscosity as 0.6 polybutylene terephthalate (PBT), extrude by 40% weight portion, all the other are with embodiment 1; Gained side by side silk elongation at break 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:
Cut into slices as the A component raw material take dried intrinsic viscosity as 1.5 polybutylene terephthalate (PBT), extrude by 80% weight portion, simultaneously, cut into slices as the B component raw material take dried intrinsic viscosity as 1.0 polybutylene terephthalate (PBT), 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, winder winding obtains bicomponent polyester fiber preliminary draft silk around (coiling speed is 4200m/min); 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 ℃, namely get described side-by-side elastic fiber; Gained side by side silk elongation at break 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 (4)
1. 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 polybutylene terephthalate (PBT), the B component of 1.0～1.5dl/g is that intrinsic viscosity is the polybutylene terephthalate (PBT) of 0.5～1.0dl/g, and both intrinsic viscosities poor be 0.3～0.6dl/g; The percentage by weight of two kinds of components is in the bicomponent polyester fiber: the A component is that 40%～80%, B component is 60%～20%; The flexible percentage elongation of described side-by-side elastic fiber is 25%～65%, and the telescopic resilience rate is 75%～95%.
2. production method of side-by-side elastic fiber as claimed in claim 1, it is characterized in that: the method by the following step is made:
Be that the polybutylene terephthalate (PBT) section of 1.0～1.5dl/g and polybutylene terephthalate (PBT) section that dried intrinsic viscosity is 0.5～1.0dl/g are respectively as A, B component input two component combined spinning machine with dried intrinsic viscosity, through the screw extruder melting, extrude, send into casing, after the measuring pump metering, jointly input respectively again filament spinning component, the melt that mixes in the filament spinning component sprays from spinnerets, behind the lateral blowing cooling forming, oil, interlacing, batch, carry out again DTY or FDY processing, obtain side-by-side elastic fiber.
3. the production method of side-by-side elastic fiber according to claim 2, it 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.
4. the production method of side-by-side elastic fiber according to claim 2 is characterized in that: nascent side-by-side elastic fiber directly obtains side-by-side elastic fiber FDY through behind the deep 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 ℃; During deep processing, 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 |
|---|---|---|---|
| CN 200810211104 CN101654814B (en) | 2008-08-21 | 2008-08-21 | Side-by-side elastic fiber and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810211104 CN101654814B (en) | 2008-08-21 | 2008-08-21 | Side-by-side elastic fiber and production method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101654814A CN101654814A (en) | 2010-02-24 |
| CN101654814B true 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 (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 |
Families Citing this family (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 |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210908A (en) * | 1998-09-07 | 1999-03-17 | 中国纺织大学 | Preparation of composite porous hollow stereo crimped fiber with side-by-side bicomponent |
| CN1222945A (en) * | 1997-03-31 | 1999-07-14 | 东丽株式会社 | Crimped yarn, textile fabric and process for preparing the same |
| CN1772984A (en) * | 2004-11-10 | 2006-05-17 | 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
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222945A (en) * | 1997-03-31 | 1999-07-14 | 东丽株式会社 | Crimped yarn, textile fabric and process for preparing the same |
| CN1210908A (en) * | 1998-09-07 | 1999-03-17 | 中国纺织大学 | Preparation of composite porous hollow stereo crimped fiber with side-by-side bicomponent |
| CN1772984A (en) * | 2004-11-10 | 2006-05-17 | 新光合成纤维股份有限公司 | Self-crinkling composite fiber and producing method thereof |
Cited By (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 |
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| CN101654814A (en) | 2010-02-24 |
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Granted publication date: 20130306 Termination date: 20160821 |