CN101845688A - Bi-component sheath-core composite drafting fiber and preparation method thereof - Google Patents
Bi-component sheath-core composite drafting fiber and preparation method thereof Download PDFInfo
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Abstract
The invention provides a bi-component sheath-core composite drafting fiber. The bi-component is a polyester component and a polyamide component respectively, wherein the polyamide component forms an outer sheath part; the polyester component forms an inner core part; the outer sheath part is coated around the inner core part; and the polyester component may be one or more of a cationic normal-pressure dyeable polyester, a polytrimethylene terephthalate and a polybutylene terephthalate. As the bi-component sheath-core composite drafting fiber provided by the invention utilizes a polyester of which a molecular chain has flexible branched chains, such as the cationic normal-pressure dyeable polyester, the polytrimethylene terephthalate, the polybutylene terephthalate and the like, the prepared composite drafting fiber is looser, and dyes can enter the fiber more easily to achieve higher dying performance under a conventional dying condition. The invention also provides a preparation method for the bi-component sheath-core composite drafting fiber.
Description
Technical field
The present invention relates to the fibre spinning field, be specifically related to a kind of composite drafting fiber and preparation method thereof.
Background technology
Composite fibre is meant by two kinds of polymer, two or more polymer or has the chemical fibre that same polymer of different nature is made through composite spinning method, contain two or more immiscible component on the cross section of fiber.Divide according to structure, common composite fibre has parallel type, core-skin type, fabric of island-in-sea type, sliver type etc.
Bi-component sheath-core composite drafting fiber is meant that be outer skin portion by composite spinning technology with polyamide, polyester is the compound as-spun fibre that makes of inner core part, and the process draw texture obtains having certain flexible bicomponent composite fibre, its intensity height, little, the good springiness of density.
In the prior art, during preparation bicomponent sheath core pattern composite fibre, the polyester components of use is mainly polyethylene terephthalate, and polyamide component is mainly polycaprolactam, the core-sheath compound fibre of this two kinds of components preparation, be used for making more ribbon, through compile, knitting, machine-processed thing.Because the polyethylene terephthalate strand is regular, stable chemical performance, under household condition adhesion is very weak with most dyestuff, cause using polyethylene terephthalate to need exacting terms such as High Temperature High Pressure to dye as the core-sheath compound fibre of skin, fixation power is low, and color saturation is low.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of bi-component sheath-core composite drafting fiber, and dyeing is easy, and fixation power is strong, the color saturation height.
In order to overcome the above problems, the invention provides a kind of bi-component sheath-core composite drafting fiber, described bi-component is respectively polyester components and polyamide component; Described polyamide component forms outer skin portion, and described polyester components forms the inner core part; Described outer skin portion is coated on around the described inner core part; Described polyester components is selected from one or more in cation normal-pressure dyeable polyester, polytrimethylene terephthalate, the polybutylene terephthalate (PBT).
Preferably, described polyester components and polyamide component are 20～50: 50～80 by weight.
Preferably, described polyamide component is selected from one or more in polycaprolactam, polyhexamethylene adipamide, nylon 46, poly hexamethylene adipamide pentanediamine, polyheptamethylene adipinamide, polyoctamethylene adipamide, polynonamethylene adipamide, the polydecamethylene adipamide.
The present invention also provides a kind of preparation method of bi-component sheath-core composite drafting fiber, comprising: with the fusion in first screw extruder of described polyester components;
With the fusion in second screw extruder of described polyamide component;
The molten product of described first screw extruder and the molten product of described second screw extruder are obtained as-spun fibre by the spinnerets extrusion molding; Described polyester components is selected from one or more in cation normal-pressure dyeable polyester, polytrimethylene terephthalate, the polybutylene terephthalate (PBT); Described polyamide component forms the outer skin portion of described as-spun fibre, and described polyester components forms the inner core part of described as-spun fibre;
With described as-spun fibre cool off successively, oil, drawing-off, coiling, obtain bi-component sheath-core composite drafting fiber.
Preferably, before fusion, also comprise, with described polyester components and the crystals dried step of described polyamide component.
Preferably, the melt temperature of described first screw extruder is 270 ℃～280 ℃.
Preferably, the melt temperature of described second screw extruder is 260 ℃～280 ℃.
Preferably, the described oil content that oils the back fiber is 0.5wt%～1.5wt%.
Preferably, described drafting multiple is 1.5～2.0.
Preferably, the temperature of described cooling is 20 ℃～26 ℃.
The invention provides a kind of bi-component sheath-core composite drafting fiber, described bi-component is respectively polyester components and polyamide component; Described polyamide component forms outer skin portion, and described polyester components forms the inner core part; Described outer skin portion is coated on around the described inner core part; Described polyester components is selected from one or more in cation normal-pressure dyeable polyester, polytrimethylene terephthalate, the polybutylene terephthalate (PBT).Bi-component sheath-core composite drafting fiber provided by the invention has used the polyester that has flexible side chain on the branch subchains such as cation normal-pressure dyeable polyester, polytrimethylene terephthalate, polybutylene terephthalate (PBT), make that the composite fibre of preparation is more loose, the easier fibrous inside that enters of dyestuff has better dyeability under the dyeing condition of routine.
The present invention also provides a kind of preparation method of bi-component sheath-core composite drafting fiber, comprises the fusion in first screw extruder of described polyester components; With the fusion in second screw extruder of described polyamide component; The molten product of described first screw extruder and the molten product of described second screw extruder are obtained as-spun fibre by the spinnerets extrusion molding; Described polyester components is selected from one or more in cation normal-pressure dyeable polyester, polytrimethylene terephthalate, the polybutylene terephthalate (PBT); Described polyamide component forms the outer skin portion of described as-spun fibre, and described polyester components forms the inner core part of described as-spun fibre; With described as-spun fibre cool off successively, oil, drawing-off, coiling obtain bi-component sheath-core composite drafting fiber.The preparation method of bi-component sheath-core composite drafting fiber provided by the invention, realized and to have had the polyester of flexible side chain and the melt spinning of polyamide component on the branch subchains such as cation normal-pressure dyeable polyester, polytrimethylene terephthalate or polybutylene terephthalate (PBT), because it is more loose to have the big molecule of flexible side chain, so easier fibrous inside that enters of dyestuff, make that the drawn fiber dyeing of preparation is easier, fixation Li Genggao, the color saturation height.
Description of drawings
Fig. 1 is the Electronic Speculum figure of bi-component sheath-core composite drafting fiber provided by the invention.
The specific embodiment
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiments of the invention are described, but should be appreciated that just restriction of these descriptions for further specifying the features and advantages of the present invention rather than patent of the present invention being required.
CATION high pressure dyeable polyester (CDP) and cation normal-pressure dyeable polyester (ECDP) are the modified product of polyethylene terephthalate (PET).CDP has added metal sulfonate isophthalic acid ester class the 3rd monomer and has prepared in strand when synthesizing polyethylene terephthalate, preferred the 3rd monomer of the present invention is 5-sodium sulfonate dimethyl isophthalate (SIPM) or 5-sodium sulfonate-1.3-M-phthalic acid hydroxyethyl ester (SIPE).And ECDP has introduced polyvinyl alcohol as side chain on the CDP strand, has improved the molecule chain flexibility, and the random degree of strand is increased, and makes the composite fibre of its preparation more loose, and dyestuff is more prone to enter fibrous inside.
Below will be described in detail the solution of the present invention.
The invention provides a kind of bi-component sheath-core composite drafting fiber, described bi-component is respectively polyester components and polyamide component; Described polyamide component forms outer skin portion, and described polyester components forms the inner core part; Described outer skin portion is coated on around the described inner core part; Described polyester components is selected from one or more in cation normal-pressure dyeable polyester, polytrimethylene terephthalate, the polybutylene terephthalate (PBT).
According to the present invention, polyester in the described polyester components is one or more in the following polymer: terephthalic acid (TPA) propylene diester (PTT), polybutylene terephthalate (PBT), CDP, ECDP, described ECDP specifically can be as preparation method's preparations of relevant normal pressure cation dyeable polyester in the disclosed normal pressure cation dyeable polyester of Chinese patent CN1831028A, its fibre and the preparation thereof.All has long soft segment on the macromolecular chain segment of above-mentioned polyester, make that the fibrous molecular structure that is got by above-mentioned three kinds of polyester is more loose, amorphism increases, more helping dyestuff enters fibrous inside dyeability is preferably arranged, adopting above-mentioned polyester is that the bi-component sheath-core composite drafting fiber of feedstock production is through opening the fabric that obtains behind the fibre when dyeing, can reduce the coloration of textile materials condition, normal pressure is just realized dyeing down.
According to the present invention, the polyamide in the described polyamide component is preferably one or more in polycaprolactam (PA6) or polyhexamethylene adipamide (PA66), nylon 46, poly hexamethylene adipamide pentanediamine, polyheptamethylene adipinamide, polyoctamethylene adipamide, polynonamethylene adipamide, the polydecamethylene adipamide.Described polyamide component and described polyester components are preferably by weight: 20～50: 50～80 more preferably 30～40: 60～70.Bi-component sheath-core composite drafting fiber sectional view provided by the invention as shown in Figure 1, wherein polyamide component 1 forms sheath component, polyester components 2 forms the inner core parts.
The present invention also provides a kind of preparation method of bi-component sheath-core composite drafting fiber, comprising: with the fusion in first screw extruder of described polyester components;
With the fusion in second screw extruder of described polyamide component;
The molten product of described first screw extruder and the molten product of described second screw extruder are obtained as-spun fibre by the spinnerets extrusion molding; Described polyester components is selected from one or more in cation normal-pressure dyeable polyester, polytrimethylene terephthalate, the polybutylene terephthalate (PBT); Described polyamide component forms the outer skin portion of described as-spun fibre, and described polyester components forms the inner core part of described as-spun fibre; With described as-spun fibre cool off successively, oil, drawing-off, coiling, obtain bi-component sheath-core composite drafting fiber.
According to the present invention, the section of the polyester slice that at first provides and polyamide is carried out sending into screw extruder more respectively after the dried and is carried out fusion.Described polyester slice baking temperature is 130 ℃～150 ℃, is preferably 135 ℃～140 ℃; The baking temperature of described polyamide is 70 ℃～90 ℃, more preferably 75 ℃～85 ℃.The present invention does not have specific (special) requirements to the dry environment of polyester and polyamide.
After the polyester slice drying, put into the first screw extruder fusion, the melt temperature of described first screw extruder is preferably 270 ℃～280 ℃, more preferably 275 ℃～280 ℃.Behind the polyamide chip drying, put into the second screw extruder fusion, the melt temperature of second screw extruder is preferably 260 ℃～280 ℃, more preferably 270 ℃～275 ℃.
The extruder that uses among the present invention can be single screw extrusion machine or double screw extruder, and the diameter of extruder screw is 50mm～130mm, is preferably 60mm～120mm, and draw ratio is 20～27 to be preferably 22～25, more preferably 23～24; Compression ratio is preferably 3～4.
Melt in two screw extruders after the fusion enters polyester, polyamide spinning manifold respectively, enter composite spining module through separately spinning pump, in composite spining module, form compound as-spun fibre through same melt distribution plate, spinnerets, the rotating speed of measuring pump is preferably 15rad/min～40rad/min, described composite spining module comprises sheath core fiber spinnerets and melt filtration plate, preferred 2000 holes of described melt filtration plate/cm
2～2500 holes/cm
2With 10000 holes/cm
2～11000 holes/cm
2Two-layer stainless steel filtering net, described spinnerets preferably use conduit type spinnerets well known to those skilled in the art, crack type spinnerets, but are not limited to above two kinds of spinneretss.
Compound as-spun fibre enters the lateral blowing chamber after spraying from spinnerets, described side-blown air compartment is in the spinning manifold bottom, and under the effect of steady air flow, the melt thread is cooled to plastic fibre in the side-blown air compartment.The temperature of described side-blown air compartment steady air flow is preferably 20 ℃～26 ℃, and humidity is preferably 60%～85%, and more preferably 70%～80%.Since between as-spun fibre and the extruder body and the friction between the as-spun fibre monofilament produce a large amount of static, in order to eliminate the effect of static, operation will oil after the lateral blowing cooling, after oiling, the as-spun fibre oil content preferably accounts for 0.5%～1.5% of total weight of fibers, more preferably 0.8%～1.2%, most preferably be 0.9%～1%.Described oiling can be used siloxanes well known to those skilled in the art.Fiber after described the oiling carries out drawing-off through draw-gear well known to those skilled in the art to fiber, and drawing-off is always led and doubly is preferably 1～3 times, and more preferably 1.5～2.5 times, drawing-off progression is preferably 2～3 grades.Fiber is through after the drawing-off, and through winding shaping, the up-coiler rotating speed is preferably 3000m/min～3500m/min.Leave standstill the fiber after reeling at least that 18h more preferably leaves standstill more than the 20h to remove internal stress, more preferably leave standstill 24h～720h, can use equipment well known to those skilled in the art for up-coiler, there is no particular restriction to this in the present invention.
Below will elaborate the present invention program by specific embodiment.In following embodiment and the Comparative Examples, all use with a kind of screw extruder, parameter is as follows: diameter is 80mm, and draw ratio is 25, compression ratio is 4, and the ECDP in following examples all is the ECDP of Shun Star sections that provided by Jiangsu Wujiang Fudong Textile Group Co., Ltd..
Embodiment 1
Get 35 parts of PA6 section and 65 parts of ECDP sections are dry in the electric heating convection oven respectively, the baking temperature of ECDP section is 135 ℃, and the baking temperature that PA6 cuts into slices is 80 ℃.Different extruders is put in dried ECDP section and PA6 section respectively to carry out fusion and sprays by the conduit type spinnerets, obtain as-spun fibre, described PA6 forms the outer skin portion of described as-spun fibre, and described ECDP forms the inner core part of described as-spun fibre.Then described as-spun fibre is carried out the lateral blowing cooling and shaping through the cooling quench device, 23 ℃ of chilling temperatures, oil through atomizer again, finish is the 8wt% silicone emulsion, oil content after fiber oils is 1%, with described fiber through the total draft multiple is then after 2.5 the drawing-off, to enter up-coiler and carry out mechanical winding shaping, coiling speed is 4000m/min, places 36h and obtains bi-component sheath-core composite drafting fiber with destressing.
Use the bi-component sheath-core composite drafting fiber of preparation to be woven into fabric, the fabric that makes is sent in the dyeing machine dyeed, the dyestuff that dyeing is used is all available from Shanghai big rising sun chemistry industry and trade Co., Ltd.The combination property of fiber sees Table the embodiment 1 in 1, and dyeability sees Table the embodiment 1 in 2.
Embodiment 2～embodiment 4
The weight ratio of PA6 and ECDP was respectively 20: 80,40: 60,50: 50 among embodiment 2～embodiment 4, method according to embodiment 1 prepares bi-component sheath-core composite drafting fiber, and use this fiber production fabric and dyeing, the fiber combination property of mensuration and dyeability are respectively shown in the embodiment 2～embodiment 4 in table 1 and the table 2.
Embodiment 5
Method according to embodiment 1 prepares bi-component sheath-core composite drafting fiber, and wherein PA6 forms outer skin portion, and PBT forms the inner core part, and described PA6 and PBT are 40: 60 according to weight ratio.The combination property of described drawn fiber sees Table the embodiment 5 in 1.Use this drawn fiber to prepare fabric and dye, and the detection of dyeing, coloration result sees Table shown in the embodiment 5 in 2.
Embodiment 6
Method according to embodiment 1 prepares bi-component sheath-core composite drafting fiber, and wherein PA6 forms outer skin portion, and PTT forms the inner core part, and described PA6 and PTT are 40: 60 according to weight ratio.The combination property of described drawn fiber sees Table the embodiment 6 in 1.Use this drawn fiber to prepare fabric and dye, and the detection of dyeing, coloration result sees Table shown in the embodiment 6 in 2.
Comparative Examples 1
Get 35 parts of PA6 section and 65 parts of PET sections are dry in the electric heating convection oven respectively, the baking temperature of PET section is 135 ℃, and the baking temperature that PA6 cuts into slices is 80 ℃.Different extruders is put in dried PET section and PA6 section respectively carried out fusion and spray, obtain as-spun fibre by the conduit type spinnerets.Described PET forms the inner core part, and described PA6 forms outer skin portion.Then described as-spun fibre is carried out the lateral blowing cooling and shaping through the cooling quench device, 23 ℃ of chilling temperatures, oil through atomizer again, finish is the 8wt% silicone emulsion, oil content after fiber oils is 1%, then with described fiber successively through after 0.5 times, 1 times the drawing-off, enter up-coiler and carry out mechanical winding shaping, coiling speed is 4000m//min, obtains bi-component sheath-core composite drafting fiber.
Use the bi-component sheath-core composite drafting fiber of preparation to be woven into fabric, the fabric that makes is sent in the dyeing machine dyeed, the dyestuff that dyeing is used is all available from Shanghai big rising sun chemistry industry and trade Co., Ltd.The combination property of fiber sees Table the Comparative Examples in 1, and dyeability sees Table the Comparative Examples in 2.
Table 1, the contrast of drawn fiber combination property
The contrast of table 2 drawn fiber dyeability
The present invention has also carried out the test of color saturation and pliability to the drawn fiber and the fabric of embodiment 1～6 and comparative example 1 preparation in addition.
Tester: 15 cloth sales forces
The tester observes respectively and catches and touches dyed embodiment 1 to 6 and comparative example 1 makes fabric, evaluates and tests by following evaluation criterion:
The dyeing saturation degree of weaving cotton cloth evaluation criterion: saturation gradation is by " ★ " expression, and the number of " ★ " multilist more shows that the color saturation of weaving cotton cloth is high more, and color is bright-coloured more, bright.
The pliability of weaving cotton cloth evaluation criterion: the pliability grade is by " ● " expression, and the number of " ● " multilist is more shown the soft more exquisiteness of weaving cotton cloth.
Speak more the more pliability of the saturation degree of bright dyeing and cloth of " ★ " and " ● " is good more in the table.
Weave cotton cloth color saturation and pliability evaluation result that table 3 embodiment of the invention and comparative example make
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative example 1 | |
| Saturation degree | ??★★★??★ | ??★★★??★ | ??★★★??★ | ??★★★??★ | ??★★★??★ | ??★★★??★ | ??★★ |
| Pliability | ??●●●??●● | ??●●●??●● | ??●●●??●● | ??●●●??●● | ??●●●??●● | ??●●●??●● | ??●●??● |
Can illustrate by above embodiment data, bi-component sheath-core composite drafting fiber provided by the invention not only has good feel, and color saturation and fixation ability are all very strong, and the bi-component sheath-core composite drafting fiber in has remarkable advantages compared to existing technology.
More than a kind of bi-component sheath-core composite drafting fiber provided by the invention is described in detail; having used specific case herein sets forth principle of the present invention and embodiment; the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. a bi-component sheath-core composite drafting fiber is characterized in that, described bi-component is respectively polyester components and polyamide component; Described polyamide component forms outer skin portion, and described polyester components forms the inner core part; Described outer skin portion is coated on around the described inner core part; Described polyester components is selected from one or more in cation normal-pressure dyeable polyester, polytrimethylene terephthalate, the polybutylene terephthalate (PBT).
2. drawn fiber according to claim 1 is characterized in that, described polyamide component and polyester components are 20～50: 50～80 by weight.
3. drawn fiber according to claim 1, it is characterized in that described polyamide component is selected from one or more in polycaprolactam, polyhexamethylene adipamide, nylon 46, poly hexamethylene adipamide pentanediamine, polyheptamethylene adipinamide, polyoctamethylene adipamide, polynonamethylene adipamide, the polydecamethylene adipamide.
4. the preparation method of a bi-component sheath-core composite drafting fiber is characterized in that, comprising:
With the fusion in first screw extruder of described polyester components;
With the fusion in second screw extruder of described polyamide component;
The molten product of described first screw extruder and the molten product of described second screw extruder are obtained as-spun fibre by the spinnerets extrusion molding; Described polyester components is selected from one or more in cation normal-pressure dyeable polyester, polytrimethylene terephthalate, the polybutylene terephthalate (PBT); Described polyamide component forms the outer skin portion of described as-spun fibre, and described polyester components forms the inner core part of described as-spun fibre;
With described as-spun fibre cool off successively, oil, drawing-off, coiling, obtain bi-component sheath-core composite drafting fiber.
5. preparation method according to claim 4 is characterized in that, also comprises before fusion, with described polyester components and the crystals dried step of described polyamide component.
6. preparation method according to claim 4 is characterized in that, the melt temperature of described first screw extruder is 270 ℃～280 ℃.
7. preparation method according to claim 4 is characterized in that, the melt temperature of described second screw extruder is 260 ℃～280 ℃.
8. preparation method according to claim 4 is characterized in that, the described oil content that oils the back fiber is 0.5wt%～1.5wt%.
9. method according to claim 4 is characterized in that, described drafting multiple is 1.0～3.0.
10. method according to claim 4 is characterized in that, the temperature of described cooling is 20 ℃～26 ℃.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101845686A (en) * | 2010-05-28 | 2010-09-29 | 厦门泓信特种纤维有限公司 | Bi-component sheath-core composite high-stretch fiber and preparation method thereof |
| CN102953148A (en) * | 2012-10-26 | 2013-03-06 | 厦门翔鹭化纤股份有限公司 | Low-melting-point polyester skin core composite colored fiber and production method thereof |
| CN103014911A (en) * | 2011-09-23 | 2013-04-03 | 新光合成纤维股份有限公司 | Core-sheath composite fiber, method for producing same, and fabric |
| CN103409878A (en) * | 2013-07-26 | 2013-11-27 | 苏州龙杰特种纤维股份有限公司 | Novel composite spinning fabric and preparation process thereof |
| CN103952788A (en) * | 2014-04-10 | 2014-07-30 | 中国石油化工股份有限公司 | Modified polyesteramide short fiber and preparation method thereof |
| CN107164836A (en) * | 2017-07-19 | 2017-09-15 | 太仓市特灵化纤有限公司 | A kind of good chemical fibre of anti-wear performance |
| CN109943914A (en) * | 2017-12-20 | 2019-06-28 | 上海凯赛生物技术研发中心有限公司 | A kind of softness moisture absorption crimped staple and its preparation method and application |
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| CN110886033A (en) * | 2019-07-03 | 2020-03-17 | 海西纺织新材料工业技术晋江研究院 | Stretch yarn of low modulus elastic fiber and preparation method thereof |
| CN113699621A (en) * | 2021-10-11 | 2021-11-26 | 南通新帝克单丝科技股份有限公司 | Polyamide-polyester composite monofilament and preparation method thereof |
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| CN101845686A (en) * | 2010-05-28 | 2010-09-29 | 厦门泓信特种纤维有限公司 | Bi-component sheath-core composite high-stretch fiber and preparation method thereof |
| CN103014911A (en) * | 2011-09-23 | 2013-04-03 | 新光合成纤维股份有限公司 | Core-sheath composite fiber, method for producing same, and fabric |
| CN103014911B (en) * | 2011-09-23 | 2015-05-27 | 新光合成纤维股份有限公司 | Core-sheath composite fiber, method for producing same, and fabric |
| CN102953148B (en) * | 2012-10-26 | 2014-10-29 | 厦门翔鹭化纤股份有限公司 | Low-melting-point polyester skin core composite colored fiber and production method thereof |
| CN102953148A (en) * | 2012-10-26 | 2013-03-06 | 厦门翔鹭化纤股份有限公司 | Low-melting-point polyester skin core composite colored fiber and production method thereof |
| CN103409878A (en) * | 2013-07-26 | 2013-11-27 | 苏州龙杰特种纤维股份有限公司 | Novel composite spinning fabric and preparation process thereof |
| CN103952788A (en) * | 2014-04-10 | 2014-07-30 | 中国石油化工股份有限公司 | Modified polyesteramide short fiber and preparation method thereof |
| CN103952788B (en) * | 2014-04-10 | 2016-09-14 | 中国石化仪征化纤有限责任公司 | A kind of modified polyamide ester chopped fiber and preparation method thereof |
| CN107164836A (en) * | 2017-07-19 | 2017-09-15 | 太仓市特灵化纤有限公司 | A kind of good chemical fibre of anti-wear performance |
| CN109943914A (en) * | 2017-12-20 | 2019-06-28 | 上海凯赛生物技术研发中心有限公司 | A kind of softness moisture absorption crimped staple and its preparation method and application |
| CN109943913A (en) * | 2017-12-20 | 2019-06-28 | 上海凯赛生物技术研发中心有限公司 | A kind of moisture-absorbing dyed crimped fibre of softness and preparation method thereof |
| CN109943913B (en) * | 2017-12-20 | 2021-05-07 | 上海凯赛生物技术股份有限公司 | Soft moisture-absorbing and easy-to-dye crimped fiber and preparation method thereof |
| CN109943914B (en) * | 2017-12-20 | 2021-05-07 | 上海凯赛生物技术股份有限公司 | Soft moisture-absorbing crimped staple fiber and preparation method and application thereof |
| CN110886033A (en) * | 2019-07-03 | 2020-03-17 | 海西纺织新材料工业技术晋江研究院 | Stretch yarn of low modulus elastic fiber and preparation method thereof |
| CN113699621A (en) * | 2021-10-11 | 2021-11-26 | 南通新帝克单丝科技股份有限公司 | Polyamide-polyester composite monofilament and preparation method thereof |
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