CN105862150A - Superfine composite fiber and processing technology thereof - Google Patents
Superfine composite fiber and processing technology thereof Download PDFInfo
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- CN105862150A CN105862150A CN201610355479.XA CN201610355479A CN105862150A CN 105862150 A CN105862150 A CN 105862150A CN 201610355479 A CN201610355479 A CN 201610355479A CN 105862150 A CN105862150 A CN 105862150A
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- type composite
- composite fibre
- nylon
- superfine
- polyester
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- 239000000835 fiber Substances 0.000 title claims abstract description 70
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000012545 processing Methods 0.000 title claims abstract description 19
- 238000005516 engineering process Methods 0.000 title abstract description 7
- 229920001778 nylon Polymers 0.000 claims abstract description 43
- 239000004677 Nylon Substances 0.000 claims abstract description 42
- 229920000728 polyester Polymers 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 37
- 238000009987 spinning Methods 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 6
- 238000012986 modification Methods 0.000 claims description 32
- 230000004048 modification Effects 0.000 claims description 32
- 238000005098 hot rolling Methods 0.000 claims description 16
- 229920002292 Nylon 6 Polymers 0.000 claims description 9
- 238000005422 blasting Methods 0.000 claims description 8
- 230000036760 body temperature Effects 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229920006152 PA1010 Polymers 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims 2
- 239000004744 fabric Substances 0.000 abstract description 21
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000009998 heat setting Methods 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 239000000306 component Substances 0.000 description 24
- 230000008602 contraction Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 229920006052 Chinlon® Polymers 0.000 description 6
- 239000003513 alkali Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 244000144730 Amygdalus persica Species 0.000 description 3
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 235000006040 Prunus persica var persica Nutrition 0.000 description 3
- 229920004933 Terylene® Polymers 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000000280 densification Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- 239000010985 leather Substances 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 206010061592 cardiac fibrillation Diseases 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 230000002600 fibrillogenic effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical class ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001595 contractor effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/096—Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Multicomponent Fibers (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention relates to a superfine composite fiber and a processing technology thereof, which belong to the technical field of filament yarn generation. The processing technology comprises the following steps of adopting modified nylon and polyester as raw materials; after melting and extruding the two raw materials through different screw extruders respectively, entering a double-component spinning component at the same time; carrying out a one-step spinning method including cooling, oiling, drafting, heat setting and winding on the sprayed melt to obtain the superfine composite fiber with the modified nylon as a 'support', and the PET (Polyester) as 'shreds'. The processing technology provided by the invention can be applied to the processing of the superfine composite fiber, faux suede, waterproof fabrics and the like. The superfine composite fiber has the advantages of stiffness and smoothness, compactness, fullness and the like in fabrics.
Description
Technical field
The present invention relates to a kind of superfine type composite fibre and processing technique thereof, belong to long filament generation technique field.
Background technology
Composite spinning prepares the method for superfine fibre mainly to be had sea-island-type composite spun and splits release composite spinning, its
In split in release composite spinning and main to utilize the incompatibility of terylene and chinlon based on polyester-nylon composite spinning,
Fibrillation under the effect of rear road Alkali reduction or certain mechanical force, prepares superfine Denier fibre.Superfine fibre and general fibre
Compare, there is minimum line density and high-specific surface area, the fabric being made into have high spreadability, soft,
The characteristics such as comfortable and easy to wear, tone is soft, be widely used in suede nap, imitative peach face, superfine fiber leather base fabric,
The production of highly dense waterproof fabric, high-performance cleaning cloth, high-performance suction strainer material etc., becomes the product that added value is higher
Product.
Polyester-nylon complex fiber is the technology of a kind of comparative maturity, raw materials used many based on normal polyester and nylon 6,
Cross section is then based on the Fructus Citri tangerinae lobe type (also referred to as rice font) of 8 segmentations.In order to produce thinner composite fibre, also have
Increasing the ration of division, as application number CN200910025727.4 discloses, " a kind of 0.06D surpasses spy and carefully washs brocade again
The preparation method of condensating fiber ", fibre section is 16 or 24 segmentations, to realize the production of more fine-denier number.
For the fabric making superfine fibre be made into, there is densification, well-pressed, plentiful effect, it is often necessary to super
Fine fibre is incorporated to a high-shrinkage fibre, during making fabric arrange after dyeing, due to high-shrinkage fibre
Shrink, make cloth cover overall shrinkage, produce fine and close and abundant cut velvet effect.But the high-shrinkage fibre being incorporated to can make
There is aberration and tightly puts phenomenon in fabric, affects the style of final fabric.
To this end, application number CN201310198200.8 discloses " high convergency polyester-nylon composite superfine fibre and production
Method ", add a certain amount of as core component, in nylon 6 adding a certain amount of polyurethane in conventional PET
Vistamaxx propylene-based elastomeric be another component, preparing high convergency by the method for conjugate spinning, to wash brocade multiple
Close superfine fibre, but concrete technique and fibre shrinkage index are not stated, and for super fine denier spinning
For, spinning properties can be brought greater impact by the interpolation of blend components.Application number CN201410265536.6
Disclose " preparation method of a kind of polyester-nylon composite superfine fibre with super shrinkage ", use high convergency to gather
Ester section and the ratio of chinlon 6 section, in mass ratio 80:20～60:40, prepared boiling water shrinkage reaches 15%
Above washs brocade composite superfine DTY.Described high convergency section is by adding M-phthalic acid and neopentyl glycol system
, but high-contraction polyester is as sliver part, and content is many in the fibre, and shrinkage factor is the highest, easily causes cloth cover hard
Firmly, affect flexibility, and the chinlon of rice character segment is distributed between high convergency sliver, it is impossible to produce lofting effect.
Application number CN201510422893.3 disclose " a kind of rip-panel type high convergency chinlon be combined fully drawn yarn and
Preparation method ", high convergency component and chinlon component the bicomponent composite fibre being combined with each other, cross section is in splitting
Lobed, wherein chinlon component: the percentage by weight of high convergency component is 55～65:45～35, boiling water shrinkage
Rate is about 10%, but undeclared high convergency section index used, and cross section is rip-panel type (namely rice
Font), support is big with the contact surface of sliver, makes the contractility of holder part be less than interfibrous frictional force, relatively
The raw different contractive effect of difficult labour.And these methods, only account for the impact of fiber boiling water shrinkage, in fact for
Superfine composite fiber, it is important that the different contraction between fibre fractionation, i.e. by fibrillation, makes the component that shrinkage factor is low
It is coated on outside the component that shrinkage factor is high, forms fluffy, the fine and close and resultant effect of cut velvet.So the selection of component,
The design in cross section and the control of processing technique are most important.
Prior art such as Application No. 032345356, Application No. 2008100636505 is then by means of island
Yarn spinning method or water-soluble material characteristic form superfine fibre, but this mode has particular/special requirement to raw material, its
Product variety is limited, and the fine structure of fiber itself is destroyed, and mechanical performance cannot meet use demand.
Based on this, make the application.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of modification of nylon and split release superfine type again with polyester
The processing technique of condensating fiber, this technique with modification of nylon (COPA) and polyester (PET) as raw material, through multiple
Close spinning method, prepare with modification of nylon be " support ", PET for " sliver " split release superfine type answer
Condensating fiber.
For achieving the above object, the technical solution used in the present invention is as follows:
The processing technique of superfine type composite fibre, with modification of nylon (COPA) and polyester (PET) as raw material,
Melt extrude through screw extruder respectively, enter double-component composite spinning equipment and the spinneret orifice of particular design, spray
The melt gone out, cooled, oil, drawing-off, thermal finalization, the single step spining method of winding, prepare with modification
Nylon be " support ", PET be that release superfine type composite fibre is split in the different contraction of " sliver ".
Main technical process and technical parameter include:
(1) modification of nylon (COPA): with PA6 as main component, by add PA66, PA1010,
The modification by copolymerization nylon that one or more monomers in PA1012, PA1212, PA10, PA11 prepare, fusing point
It is 195～205 DEG C, relative viscosity 2.4 ± 0.10；If from cost consideration, preferably PA66 is as comonomer.
(2) spinneret orifice: Magen David or five-pointed star.
(3) composite spinning:
1. polyester: intrinsic viscosity 0.685 ± 0.010dl/g, dry section moisture content is less than 50ppm, and screw rod is each
District's temperature 270～290 DEG C.
2. COPA: relative viscosity 2.40 ± 0.10, screw rod each district temperature 260～280 DEG C.
The mass ratio of COPA (holder part) and PET (sliver part) is 30～50:70～50, spinning
Spin manifold temperature is 285～295 DEG C, cross air blasting wind speed 0.4～0.6m/s；First hot-rolling speed 2000-2400m/min,
Temperature 70-90 DEG C；Second hot-rolling speed 4000-4400m/min, temperature 120-140 DEG C；Oil applying rate 0.8～
1.0%, the release polyester-nylon superthin type that splits preparing 50～150dtex/36f is combined FDY.
The cross section using the superfine type composite fibre obtained by above-mentioned technique is made up of " support " and " sliver ",
Sliver is arranged with support concentric, and support is five-pointed star or Magen David shape, and sliver is around a frame peripheral；
The specification of this superfine type composite fibre is 80～250dtex/36f.
The operation principle of the present invention and having the beneficial effect that:
(1) with modification of nylon (COPA) and polyester (PET) as raw material, melt through screw extruder respectively
Extrusion, enters double-component composite spinning equipment and sprays melt, warp from the spinneret orifice with Magen David or five-pointed star
Cool down, oil, drawing-off, thermal finalization, the single step spining method of winding, prepare with modification of nylon be " support ",
PET is the crack type composite fibre (FDY) of " sliver ".This fiber is not required to be incorporated to separately high-shrinkage fibre,
Just can direct woven into fabric, during Alkali reduction, modification of nylon is peeling-off with terylene part, and later
High-temperature dyeing procedure in, modification of nylon shrinks further, and fine denier polyester is coated on modification of nylon fiber peripheral,
Final fabric is made to have densification, well-pressed, plentiful effect.
(2) in the present invention, modification of nylon with PA6 as main constituent, by add PA66, PA1010, PA1012,
The modification by copolymerization nylon that one or more monomers in PA1212, PA10, PA11 prepare, thus form structure
Balance, the compound monomer that the compatibility is good, the melt that this monomer is formed after melt extruding has with polyester fondant
The well compatibility, when the spinneret orifice through double-component filament spinning component spinneret, as the polyester of " sliver "
PET, while keeping self component independence, is fitted in well on " support " modification of nylon, is therefore entering
Before row is peeled off, both still can form the fiber that structure is homogeneous, do not have obvious delamination, satisfactory mechanical property.
(3) in the application, the modification of nylon proportion of " support " part relatively " sliver " part fine denier polyester
Content is low, and during alkali decrement treatment, modification of nylon is peeling-off with terylene part, the less modification of ratio
In nylon contraction process will not the globality of excessive influence fiber, and it is fine to guarantee that fine denier polyester is coated on modification of nylon
Dimension around, can be used for high-grade suede nap, imitative peach face, superfine fiber leather base fabric, highly dense waterproof fabric, height
The production of performance cleaning cloth etc..
Accompanying drawing explanation
Fig. 1 is the first structural representation of the application spinneret；
Fig. 2 is the second structural representation of the application spinneret；
Fig. 3 is the process chart of the application.
Wherein label: 1. support；2. sliver.
Detailed description of the invention
Embodiment 1
The spinneret plate structure of the double-component filament spinning component that the application is used can be found in Fig. 1 or Fig. 2, its medium-height trestle
1 is Magen David or five-pointed star, and sliver 2 is distributed in support 1 around.
With modification of nylon (COPA) and polyester (PET) as raw material, wherein, in conjunction with Fig. 3, modification of nylon warp
After crystallizing and drying-1, screw extruder-1 are melted, measure through dosing pump-1 and send into double-component filament spinning component, with
Time, polyester is crystallized is dried-2, screw extruder-2 melted after, be also fed into double-component through dosing pump-2 metering and spin
Silk assembly, after double-component filament spinning component spinning is extruded, through cross air blasting cooling, oils, more fixed through the first hot-rolling
Deliver to FDY winding after type, the second hot-rolling sizing, form modification of nylon and split release superfine composite fibre with polyester
Dimension.
Below by way of specific embodiment, the invention will be further described.
Embodiment 1
(relative viscosity presses the section of FZ/T 51004-2011 fibre-grade polycaprolactam to the relative viscosity of COPA
Standard testing) it is 2.4, fusing point is 195 DEG C, and dry section moisture content is less than 100ppm, screw rod each district temperature
260～280 DEG C；(GB/T 14190-2008 is pressed in intrinsic viscosity, with phenol and four chloroethenes in the intrinsic viscosity of PET
Alkane 1:1 detects as solvent) it is 0.685dl/g, dry section moisture content is less than 50ppm, screw rod each district temperature
Spend 270～290 DEG C.
The mass ratio of COPA Yu PET is 30:70, and fibre section is that star-like (i.e. spinneret uses Fig. 1 to hexagonal
Shown structure), spinning body temperature is 285 DEG C, cross air blasting wind speed 0.4m/s；First hot-rolling speed 2000
M/min, temperature 70 C；Second hot-rolling speed 4000m/min, temperature 120 DEG C, prepare 50dtex/36f
Different contraction polyester-nylon superthin be combined FDY.
Embodiment 2
The present embodiment is identical with the setting of embodiment 1 and operation principle, and difference is: the relative viscosity of COPA
Being 2.4, fusing point is 200 DEG C, and dry section moisture content is less than 100ppm, screw rod each district temperature 260～280 DEG C；
The intrinsic viscosity 0.685dl/g of PET, dry section moisture content less than 50ppm, screw rod each district temperature 270～
290℃。
The mass ratio of COPA Yu PET is 40:60, and fibre section is that hexagonal is star-like, and spinning body temperature is
290 DEG C, cross air blasting wind speed 0.5m/s；First hot-rolling speed 2200m/min, temperature 80 DEG C；Second hot-rolling
Speed 4200m/min, temperature 130 DEG C, the different contraction polyester-nylon superthin preparing 100dtex/36f is combined FDY.
Embodiment 3
The present embodiment is identical with the setting of embodiment 1 and operation principle, and difference is: the relative viscosity of COPA
Being 2.4, fusing point is 205 DEG C, and dry section moisture content is less than 100ppm, screw rod each district temperature 260～280 DEG C；
The intrinsic viscosity 0.685dl/g of PET, dry section moisture content less than 50ppm, screw rod each district temperature 270～
290℃。
The mass ratio of COPA Yu PET is 50:50, and fibre section is that hexagonal is star-like, and spinning body temperature is
295 DEG C, cross air blasting wind speed 0.6m/s；First hot-rolling speed 2400m/min, temperature 90 DEG C；Second hot-rolling
Speed 4400m/min, temperature 140 DEG C, the different contraction polyester-nylon superthin preparing 150dtex/36f is combined FDY.
Embodiment 4
The present embodiment is identical with the setting of embodiment 1 and operation principle, and difference is: the relative viscosity of COPA
Being 2.4, fusing point is 200 DEG C, and dry section moisture content is less than 100ppm, screw rod each district temperature 260～280 DEG C；
The intrinsic viscosity 0.685dl/g of PET, dry section moisture content less than 50ppm, screw rod each district temperature 270～
290℃。
The mass ratio of COPA Yu PET is 40:60, and fibre section is that (i.e. spinneret uses Fig. 2 to five-pointed star type
Shown structure), spinning body temperature is 290 DEG C；First hot-rolling speed 2200m/min, temperature 80 DEG C；
Second hot-rolling speed 4200m/min, temperature 130 DEG C, the different contraction polyester-nylon superthin preparing 100dtex/36f is multiple
Close FDY.
Comparative example 1
The intrinsic viscosity of normal polyester is 0.685dl/g, and fusing point is 258 DEG C, and dry section moisture content is less than 50
Ppm, screw rod each district temperature 270～290 DEG C；Nylon 6 relative viscosity 2.3, dry section moisture content is less than 100
Ppm, screw rod each district temperature 260～280 DEG C.
Normal polyester is 40:60 with the mass ratio of nylon 6, and fibre section is five-pointed star type, manifold body temperature
Degree is 295 DEG C, cross air blasting wind speed 0.5m/s；First hot-rolling speed 2200m/min, temperature 80 DEG C；Second
Hot-rolling speed 4200m/min, temperature 130 DEG C, the routine preparing 100dtex/36f washs the compound FDY of brocade.
Fiber prepared by above-described embodiment is carried out performance test, and its testing standard is respectively as follows:
(1) fracture strength of fiber and elongation at break: by " GB/T 14344-2008 chemical fiber filament
Erichsen test method " test.
(2) shrinkage factor of suspenders: fiber is made into suspenders, then alkali concn be 2%, temperature 100 DEG C
Lower process 30min, after suspenders clear water is cleaned, then processes 30min at 125 DEG C, test suspenders longitudinally and
Horizontal shrinkage factor.
Shrinkage factor=(L0-L)/L0× 100%.
Wherein, L0Representing suspenders before treatment longitudinally height or transverse width, L represents that the suspenders after contraction is longitudinally
Height or transverse width.
The main preparation technology of table 1 and fibrous physics index
By the comparison of embodiment and table 1 it can be seen that above-mentioned technique is with modification of nylon and polyester as main material,
Melted in different screw extruders respectively and after extruding, enter many components composite spinning equipment and special together
The filament spinning component of design, spinneret, from the ejection of same spinneret by cross section as shown in Figure 1 or 2 by " propping up
Frame 1 " and " sliver 2 " melt of constituting, cool down through cross air blasting, oil, drawing-off, thermal finalization, winding
Single step spining method, prepare with modification of nylon be " support ", PET be that the different contraction of " sliver " is split release
Superfine composite fiber.Fiber through after road Alkali reduction split into superfine fibre, and because of the modification of " support 1 " part
Nylon has higher shrinkage factor, and in Alkali reduction and high-temperature dyeing procedure afterwards, shrinkage factor is gradually increased,
" sliver 2 " part fine denier polyester be coated on around modification of nylon, make final fabric have densification, well-pressed,
Plentiful effect, can be used for high-grade suede nap, imitative peach face, superfine fiber leather base fabric, highly dense waterproof fabric,
The production of high-performance cleaning cloth etc..
Above content is that the preferred implementation combining the invention is entered one to what provided technical scheme made
Step describes in detail, it is impossible to assert that the invention is embodied as being confined to these explanations above-mentioned, for the present invention
For creating person of an ordinary skill in the technical field, without departing from the concept of the premise of the invention, also
Some simple deduction or replace can be made, all should be considered as belonging to the protection domain of the invention.
Claims (9)
1. the processing technique of superfine type composite fibre, it is characterized in that: with modification of nylon and polyester as raw material, two raw materials are respectively after different screw extruders melt extrudes, simultaneously enter double-component filament spinning component, the melt of ejection is the most cooled, oil, drawing-off, thermal finalization, the single step spining method of winding, prepare with modification of nylon be " support ", polyester be the different shrinkage superfine type composite fibre of " sliver ".
2. the processing technique of superfine type composite fibre as claimed in claim 1, it is characterized in that: described modification of nylon is with PA6 as main component, by adding the copolymer that one or more monomers in PA66, PA1010, PA1012, PA1212, PA10, PA11 prepare.
3. the processing technique of superfine type composite fibre as claimed in claim 1 or 2, it is characterised in that: described modification of nylon is by main component and to add the copolymer that PA66 is formed as comonomer using PA6.
4. the processing technique of superfine type composite fibre as claimed in claim 1, it is characterised in that: on the spinneret of described double-component filament spinning component, spray webbing porose area is made up of " support " and " sliver ", and support is Magen David or five-pointed star shape.
5. the processing technique of superfine type composite fibre as claimed in claim 1, it is characterised in that: the fusing point of described modification of nylon is 195～205 DEG C, relative viscosity 2.4 ± 0.10.
6. the processing technique of superfine type composite fibre as claimed in claim 1, it is characterised in that: described polyester inherent viscosity is 0.685 ± 0.010 dl/g, and section water content is less than 50 ppm.
7. the processing technique of superfine type composite fibre as claimed in claim 1, it is characterised in that: in described screw extruder, screw rod each district temperature is 270～290 DEG C.
8. the processing technique of superfine type composite fibre as claimed in claim 1, it is characterised in that described spinning technique is: modification of nylon is 30～50:70～50 with the mass ratio of polyester, and spinning body temperature is 285 ~ 295
DEG C, cross air blasting wind speed 0.4 ~ 0.6
m/s；First hot-rolling speed 2000-2400
M/min, temperature 70-90 DEG C；Second hot-rolling speed 4000-4400 m/min, temperature 120-140 DEG C；Oil applying rate 0.8～1.0 %.
9. the superfine type composite fibre that processing technique as described in any one of claim 1-8 prepares, it is characterized in that: the cross section of described superfine type composite fibre is made up of support and sliver, sliver is arranged with support concentric, and support is five-pointed star or Magen David shape, and sliver is around a frame peripheral；The specification of superfine type composite fibre is 50～150 dtex/36f.
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