A kind of processing technique of same plate double-colored superfine composite polyester fiberTechnical field
The present invention relates to the processing technique of a kind of same plate double-colored superfine composite polyester fiber, belong to long filament generation techniqueField.
Background technology
Sea-island composite fiber, compared with general fibre, has minimum line density and high-specific surface area, is made intoFabric has the characteristics such as high spreadability, soft, comfortable and easy to wear, tone is soft, be widely used in suede nap,Imitative peach face, superfine fiber leather base fabric, highly dense waterproof fabric, high-performance cleaning cloth, high-performance suction strainer materialDeng production, become the product that added value is higher.Island superfine fiber has above-mentioned numerous premium properties and useWhile Tu, there is also following deficiency: be 1. difficult to dye dark color: sea-island composite fiber, due to fiber finer, compares tableArea is big, and the colour developing efficiency of dyestuff is low, i.e. color rendering properties is poor.In order to obtain the same color degree of depth, superfine fibre contaminatesColor often wants several times higher than general fibre by amount of dye, obtains dark product surely even if so also differing, as deeplyBlack, dark blue etc.；2. dyefastness is poor: the dyefastness of superfine fibre textile is typically poor than conventional fibre, bagInclude sun-proof, washable and fastness to sublimation.The main still fiber finer of its reason, specific surface area are big, therefore to selectThe dyeing that color fastness is good, and the dye species that really can promote island-in-sea fabric color fastness at present is little.
Application number 201310146982.0 discloses " preparation method of a kind of atrous island polyester fully drawn yarn ",By adding the original liquid coloring technology of black agglomerate, it is achieved that the production of atrous island superfine fiber.But meshDuring road application front and back, often by black island and white sea-island fibre network again plying, to produce, there is special colorColor effect and the fabric of style.This two step method plying the method for silk, need to through debatching, network combined, roll up againAround process, there is the drawback such as technological process length, impaired, the cost increase of product quality.
Based on this, make the application.
Summary of the invention
For the deficiencies in the prior art, it is provided that the processing technique of a kind of double-colored polyester fiber of same plate, this technique is adoptedWith composite spinning equipment and three component filament spinning components of particular design, spray double-colored island from same spinneret multipleClose melt, cooled, oil, drawing-off, thermal finalization, the single step spining method of winding, prepare double-colored islandPolyester FDY (drafting silk).
For achieving the above object, the technical scheme that the application takes is as follows:
The processing technique of a kind of double-colored polyester fiber of same plate, using alkali soluble copolymer polyester (COPET) as commonSea component, normal polyester (PET) melt is one of them island component, adds in normal polyester (PET)The melt of a certain proportion of color grain is another island component, and wherein color grain is preferably pitch black master batch；SeaComponent and 2 island components melt respectively through screw extruding, carry, measure, and enter composite spinning casing and spyThree component filament spinning components of different design, spray double-colored island respectively from the left and right sides of same spinneret compound moltenBody, cooled, oil, drawing-off, thermal finalization, winding, prepare double-colored island polyester fiber.
Main technical process and parameter include:
(1) Masterbatch raw material and dry pretreatment
Selection white carbon black active ingredient is 25%, the carbon black dispersion phase particle diameter master batch less than 300nm, utilizes continuouslySmall-sized pad device, control hot blast temperature 120～130 DEG C, make master batch moisture content less than 80ppm.
(2) preparation of the double-colored sea-island FDY of composite spinning
The intrinsic viscosity central value of 1. sea component: COPET is 0.70dl/g, and dry section moisture content is less than 50Ppm, screw rod each district temperature 260～280 DEG C.
2. the intrinsic viscosity central value of island component one: PET-3 is 0.685dl/g, and dry section moisture content is less than 50Ppm, island is combined ratio 20～30:80～70.Screw rod each district temperature 270～290 DEG C.
3. the intrinsic viscosity central value of island component two: PET-1 is 0.685dl/g, and dry section moisture content is less than 50ppm。
4. black Masterbatch adds 6～15wt% (relative to island components), island compound than 20～30:80～70, screw rod each district temperature 270～290 DEG C.
5. spinning body temperature 270～295 DEG C, cross air blasting wind speed 0.4～0.6m/s；First hot-rolling speed2000～2500m/min, temperature 70-90 DEG C；Second hot-rolling speed 4200～4500m/min, temperature130-150℃；Oil applying rate 0.8～1.0%, prepares black island and the fiber number of white sea island filament and hole count scopeBeing 50～150dtex/12～24f × 37i, total specification is the double-colored (black of 100～300dtex/24～48f × 37iSea-island FDY in vain).
The operation principle of the present invention and having the beneficial effect that:
(1) use composite spinning equipment and three component filament spinning components of particular design, spray from same spinneretGo out double-colored island compounding flux, cooled, oil, drawing-off, thermal finalization, the single step spining method of winding,Prepare double-colored island polyester fiber (FDY).One pack system need to be prepared respectively with general double-colored island superfine fiberOr monochrome sea-island fibre, the two step method using network to pool capital the most again is different, and the technological process of production shortens, productQuality advance, cost reduce.With this fiber can direct woven into fabric, after Alkali reduction, be not required to carry out again rear roadDyeing, i.e. can get black and white double-colored island superfine fiber fabric.Eliminate poststaining operation simultaneously, be one moreAdd environmental protection, the energy-conservation mode of production.
(2) melt using alkali soluble copolymer polyester (COPET) as common sea component, normal polyester (PET)Body is one of them island component, and the melt being added with Masterbatch in normal polyester (PET) is another island component,Use composite spinning equipment and three component filament spinning components of particular design, spray double-colored island from same spinneretCompounding flux, cooled, oil, drawing-off, thermal finalization, the single step spining method of winding, prepare double-colored seaIsland polyester fiber (FDY).The fabric being made into this fiber, after Alkali reduction, is not required to carry out the dyeing of rear road again,I.e. can get double-colored island superfine fiber fabric.Sea component is alkali soluble copolymer polyester, and island component is constituted by two kinds,One is non-staining PET-3, and a kind of is the PET-1 of coloring, and the island component that two kinds of colors are different imparts fibreTieing up double-colored effect, melt is after the spinneret that spinneret orifice subregion is arranged, in the left and right sides of spinneret, simultaneouslyForm the polyester fiber with dichromatism, thus realize the double-colored processing of plate.
Accompanying drawing explanation
Fig. 1 is the structural representation of three component filament spinning component spinnerets in the application；
Fig. 2 is the process chart of the application.
Wherein label: 1. spinneret；2. spinneret orifice；21. spinneret orifices one；22. spinneret orifices two.
Detailed description of the invention
The fiber of the application is made up of sea component and island component, and sea component is alkali soluble copolymer polyester COPET, island groupDividing and be made up of two parts, a part is that another part is coloured for interpolation without adding conventional PET-3 (the most colourless)After the conventional PET-1 (the most coloured) of master batch, PET-1 crystallized dry-1, send into screw rod together with MasterbatchExtruder-1 melt extrudes sea component melt, in dosing pump-1 sends into three component filament spinning components, meanwhile,COPET → crystallizing and drying-2 → screw extruder-2 → dosing pump-2, PET-3 → crystallizing and drying-3 → screw extrudingThe Liang Gu island component melt that machine-3 → dosing pump-3 is formed sends into three component spinning groups together with sea component meltIn part, the spinneret of this filament spinning component is as it is shown in figure 1, the spinneret orifice 2 on spinneret 1 is divided into spinneret orifice one (21)With spinneret orifice two (22) two district, melt is extruded by the spinneret orifice 2 of both sides, extrudes black melt respectively and white meltsBody, then cool down through cross air blasting, oil, GR1, GR2, FDY winding i.e. forms double-colored island composite filament, specificallyTechnological process is shown in Figure 2.
The elaboration of technical scheme is carried out below in conjunction with specific embodiment.
Embodiment 1
The present embodiment is the processing technique of a kind of double-colored polyester fiber of same plate, the intrinsic viscosity of sea component COPET(by GB/T 14190-2008, detect as solvent with sym-tetrachloroethane 1:1 with phenol) 0.70dl/g, drySection moisture content is less than 50ppm., screw rod each district temperature 260～280 DEG C；The spy of island component one (PET-3)Property viscosity 0.685dl/g, dry section moisture content is less than 50ppm, screw rod each district temperature 270～290 DEG C；Island groupThe intrinsic viscosity 0.685dl/g of two (PET-1), dry section moisture content is divided to add less than 50ppm, black agglomerate6wt%, screw rod each district temperature 270～290 DEG C.
The ratio on Hai Yu island is 30:70, and sea/island spinning body temperature is respectively 270/285 DEG C, cross air blasting windSpeed 0.4m/s；First hot-rolling speed 2000m/min, temperature 70 C；Second hot-rolling speed 4200m/min,Temperature 130 DEG C；Prepare the black and white sea-island FDY of 100dtex/24f × 37i.
Embodiment 2
The present embodiment is identical with the setting of embodiment 1 and operation principle, and difference is: black Masterbatch adds 9The ratio on wt%, Hai Yu island is all 25:75.Sea/island spinning body temperature is respectively 275/290 DEG C, side-blownWind wind speed 0.5m/s；First hot-rolling speed 2250m/min, temperature 80 DEG C；Second hot-rolling speed 4350m/min,Temperature 140 DEG C；Prepare the black and white sea-island FDY of 200dtex/36f × 37i.
Embodiment 3
The present embodiment is identical with the setting of embodiment 1 and operation principle, and difference is: black Masterbatch adds 12The ratio on wt%, Hai Yu island is 25:75.Sea/island spinning body temperature is respectively 275/290 DEG C, cross air blastingWind speed 0.5m/s；First hot-rolling speed 2250m/min, temperature 80 DEG C；Second hot-rolling speed 4350m/min,Temperature 140 DEG C；Prepare the black and white sea-island FDY of 200dtex/36f × 37i.
Embodiment 4
The present embodiment is identical with the setting of embodiment 1 and operation principle, and difference is: black Masterbatch adds 15Wt%.The ratio on Hai Yu island is all 20:80.Sea/island spinning body temperature is respectively 280/295 DEG C, cross air blastingWind speed 0.6m/s；First hot-rolling speed 2500m/min, temperature 90 DEG C；Second hot-rolling speed 4500m/min,Temperature 150 DEG C；Prepare the black and white sea-island FDY of 300dtex/48f × 37i.
Fracture strength and elongation at break to the FDY prepared by above-described embodiment are tested, testing standardFor: " GB/T 14344-2008 chemical fiber filament Erichsen test method ", concrete outcome sees table 1Shown in.
The main preparation technology of table 1 and fibrous physics index
In conjunction with above-described embodiment and table 1 comparing result, the application using alkali soluble copolymer polyester (COPET) asCommon sea component, normal polyester (PET) melt is one of them island component, in normal polyester (PET)The melt being added with Masterbatch is another island component, uses three components of composite spinning equipment and particular design to spinSilk assembly, sprays double-colored island compounding flux from same spinneret, cooled, oil, drawing-off, thermal finalization,Winding, prepares double-colored island polyester fiber, the especially operation with embodiment 3 and embodiment 4 the most typical.
The fabric being made into this fiber, after Alkali reduction, is not required to carry out the dyeing of rear road again, i.e. can get double-colored seaIsland ultrafine fiber fabric.One pack system need to be prepared respectively with general double-colored island superfine fiber or monochromatic island is fineDimension, the two step method using network to pool capital the most again is different, and the technological process of production shortens, product quality improves, one-tenthThis reduction；Eliminate poststaining operation simultaneously, be a kind of more environmentally-friendly, energy-conservation mode of production.