CN106435783A - Process for processing self-crimping nylon fibers - Google Patents
Process for processing self-crimping nylon fibers Download PDFInfo
- Publication number
- CN106435783A CN106435783A CN201610998793.XA CN201610998793A CN106435783A CN 106435783 A CN106435783 A CN 106435783A CN 201610998793 A CN201610998793 A CN 201610998793A CN 106435783 A CN106435783 A CN 106435783A
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- Prior art keywords
- nylon
- crimping
- processing technique
- nylon fiber
- temperature
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention relates to a process for processing self-crimping nylon fibers, and belongs to the technical field of filament generation. The process comprises the following steps: respectively melting and extruding raw materials, namely copolymerization-modified nylon and conventional nylon, by two screw extruders; respectively measuring, and feeding into a dual-component composite spinning tank body and a spinning component; spraying out different melts from the same spinneret orifice in a spinneret plate; cooling through a cooling sleeve; performing oiling, drafting, thermoforming and winding to complete the spinning process to obtain the self-crimping nylon FDY of 75-200dtex/24-48f. The process is applied to self-crimping nylon processing, and has the advantages of one-step forming and the like.
Description
Technical field
The present invention relates to a kind of from the processing technique for crimping nylon fiber, belong to long filament generation technique field.
Background technology
Parallel composite fiber refers to be passed through obtained in bi-component composite spinning by two kinds of different polymer of shrinkage
From Curl fiber, it is the principal item in composite fibre.Parallel composite fiber technology of preparing development in recent years is very fast, its
Conventional compounding ingredients mainly have PET1/PET2 of PET/PTT, PET/PBT, PTT/PBT and different molecular weight etc.；Fibre section
In addition to semicircle is compound side by side, also there are other sections, such as platypelloid type, dumbbell shape etc..
Application number CN201410117372.2 discloses " a kind of Lycoperdon polymorphum Vitt elastic fiber and preparation method thereof ", respectively by high viscous
With low viscous PET, and add Masterbatch wherein in a component Lycoperdon polymorphum Vitt elastic filament is obtained；Application number CN201410852229.8
" a kind of polyester silk and preparation method thereof " is disclosed, is obtained by compound side by side by PTT and modified PET respectively；Application number
CN201410852074.8 discloses " a kind of polyester arranged side by side composite filament and preparation method thereof ", is passed through by PBT and modified PET respectively
Compound prepared side by side.Application number CN201410370082.9 discloses " a kind of PET composite elastic fiber and preparation method thereof ", point
It is not obtained by compound side by side by the high PET and low viscous PET that glues.Application number CN201310315690.5 discloses a kind of " double-component
Composite elastic fiber ", presses 70 with PBT and PET：30～30：70 ratio is combined side by side, and its section is platypelloid type.This
A little technology be all by PET and PBT, PTT or modified PET by being obtained in the way of compound side by side, although have preferable crimp property,
But because PET component lacks flexibility, so the elastic recovery rate of fiber is still poor.
Based on this, the application is made.
Content of the invention
Drawbacks described above in the presence of processing for existing nylon fiber, the application provides a kind of elasticity and reply shape is all good
From crimp nylon fiber processing technique.
For achieving the above object, the technical scheme that the application takes is as follows：
A kind of processing technique from curling nylon fiber, with modification by copolymerization nylon (COPA) and conventional nylon (PA) as original
Material, melt extrudes through two screw extruders respectively, enters double-component composite spinning casing and filament spinning component after each self-measuring, and
Sprayed after different melts, then the cooling of cooled sleeve by same spinneret orifice on spinneret, oil, drawing-off, thermal finalization, volume
Around spinning process is completed, 75～200dtex/24～48f is obtained is combined FDY from curling nylon.
Further, as preferred：
Described modification of nylon (COPA) be with PA6 as main component, by add PA66, PA1010, PA1012,
One or more monomers in PA1212, PA10, PA11 are obtained, and fusing point is 175～205 DEG C, relative viscosity 3.0 ± 0.10；Such as
Fruit is from cost consideration, and preferably PA66 is used as comonomer.
Described PA can select PA6, PA66, PA1010, PA1012, PA1212 etc., preferably PA6, and relative viscosity 2.5 ±
0.10.
Special-shaped spinneret orifice or circular spinneret orifice is provided with described spinneret, and each spinneret orifice is by region one and region two
Constitute, be respectively used to spray modification of nylon (COPA) and conventional nylon (PA).(away from the side at the spinneret center) area in outside
Domain one is used for spraying modification of nylon, and leans on the region of paracentral inner side second for spraying conventional nylon, so that it is guaranteed that different
The melt of screw extruder extrusion enters into different porose areas, and by spinneret be extruded into section for special-shaped or circular while
Melt with two kinds of compositions, then cooled, oil, drawing and heat-setting and winding, a step spinning forms nylon fiber.More preferably
, the fibre section that described special-shaped spinneret orifice is formed is 8 fonts or circle.
Described COPA and PA's is compound than being 40：60～60：40.
200～250 DEG C of each area's temperature of described COPA screw rod, 250～270 DEG C of each area's temperature of PA screw rod, manifold body temperature
Spend for 270～280 DEG C.
Described 0.4～0.6m/s of cross air blasting wind speed.
Described cooling cover is located at below spinneret, is the tubular structure being made up of protecgulum and bonnet, its protecgulum, bonnet
On be respectively arranged with the aperture of a diameter of 5mm, be in semi-cylindrical shaped respectively, strand is in the closure sleeve formed by protecgulum and bonnet
Operation, so as to reach the purpose of cooling, to control rate of cooling and cooling uniformity, it is ensured that good crimp property and curling are steady
Qualitative.
Described oils in operation, oil applying rate 0.8～1.0%.Oil applying rate controls 0.8～1.0%, it is ensured that fiber is fine
Coherent, again meet guarantee rear road processing needs.
Described spinning technique is：First hot-rolling 3600～4200m/min of speed, 50～70 DEG C of temperature；Second hot-rolling speed
4000～4400m/min of degree, 120～140 DEG C of temperature.Drawing and heat-setting is the key factor for affecting fiber looped pile silk and elasticity,
Lousiness to be controlled, guarantee fiber surface bright and clean and control elasticity and shrinkage factor, drawing and heat-setting control is appropriate, original state is the
One hot-rolling is preform stage, and speed is unsuitable excessive, and temperature gradually will go to middle temperature from room temperature, i.e., higher than 50 DEG C, less than 100
DEG C, fiber can slowly and effective crust deformation, the second hot-rolling is the main stage of development of deformation and sizing, and its temperature, speed are equal
Can improve.Diverse location, the temperature of zones of different, speed cooperate, and ability implementation specification is 75～200dtex/24～48f
The different contraction nylon fiber FDY of veneer processing, the fibrous fracture strength control of processing is in 3.9cN/dtex or so, extension at break
Rate controls 35% or so.
The application is with modification by copolymerization nylon (COPA) and conventional nylon (PA) as raw material, and one-step method is obtained from curling nylon fibre
Dimension, and cooled down by the cooling cover of particular design, the fiber is because using the nylon with different shrinkages by simultaneously
The compound mode of row is obtained so as to preferably batches performance, elastic recovery rate and flexibility with than conventional nylon fiber, uses which
The fabric that makes has excellent elasticity and comfortableness.
Description of the drawings
Fig. 1 is the flow process chart of the application；
Fig. 2 is formed the first structural representation (8 font) of fibre section by spinneret orifice in the application；
Fig. 3 is formed second structural representation (circle) of fibre section by spinneret orifice in the application；
Fig. 4 is the structural representation of cooling cover in the application.
Wherein label：1. region one；2. region two；3. cooling cover；31. protecgulums；32. bonnets；33. cramps；34. is little
Hole.
Specific embodiment
The present embodiment is below by specific embodiment, and the invention will be further described, wherein：
Relative viscosity：Standard testing by the section of FZ/T 51004-2011 fibre-grade polycaprolactam.
Physical index：Strength and elongation and crimp contraction press GB/T--14344-2008 chemical fiber filament tensile property respectively
Test method, 6,506 2001 textured filament of GB T crispatura performance test methods test.Elastic recovery rate is with GB/T--14344-
After the pretension of 2008 chemical fiber filament Erichsen test methods eliminates curling, elastic recovery during fixed elongation 30% is measured
Rate.
Wherein, elastic recovery rate computing formula is：
In formula, L0For sample original length, L is stretched to the length after fixed elongation, L for sample1Length after resetting for sample
Degree.
Embodiment 1
The relative viscosity of COPA is 2.9, and fusing point is 175 DEG C, does aqueous less than 100ppm, each area's temperature 200 of screw rod of cutting into slices
～250 DEG C；The relative viscosity of PA is 2.4, does aqueous less than 100ppm, 250～270 DEG C of each area's temperature of screw rod of cutting into slices.
COPA and PA's is compound than being 40：60, spinneret orifice is circle, and spinning body temperature is 270 DEG C, to go out the every of spinneret
Special cooling cover, cross air blasting wind speed 0.4m/s, the first hot-rolling speed 3600m/min, temperature 50 C, the second heat are installed under synnema
Roller speed 4000m/min, 120 DEG C of temperature, oil applying rate 0.8%, prepared 75dtex/24f is combined FDY from curling nylon.
Embodiment 2
The relative viscosity of COPA is 3.0, and fusing point is 185 DEG C, does aqueous less than 100ppm, each area's temperature 200 of screw rod of cutting into slices
～250 DEG C；The relative viscosity of PA is 2.5, does aqueous less than 100ppm, 250～270 DEG C of each area's temperature of screw rod of cutting into slices.
COPA and PA's is compound than being 50：50, spinneret orifice is circle as shown in Figure 3, and spinning body temperature is 273 DEG C,
Special cooling cover, cross air blasting wind speed 0.5m/s, the first hot-rolling speed 3800m/min, temperature are installed under the every synnema for going out spinneret
60 DEG C of degree, the second hot-rolling speed 4100m/min, 130 DEG C of temperature, oil applying rate 0.9%, the curling Buddhist nun certainly of prepared 100dtex/24f
Dragon is combined FDY.
Embodiment 3
The relative viscosity of COPA is 3.0, and fusing point is 195 DEG C, does aqueous less than 100ppm, each area's temperature 200 of screw rod of cutting into slices
～250 DEG C；The relative viscosity of PA is 2.5, does aqueous less than 100ppm, 250～270 DEG C of each area's temperature of screw rod of cutting into slices.
COPA and PA's is compound than being 50：50, spinneret orifice is that 8-shaped, spinning body temperature is 276 DEG C, goes out spinneret
Per installing special cooling cover under synnema, cross air blasting wind speed 0.5m/s, the first hot-rolling speed 4000m/min, temperature 60 C, second
Hot-rolling speed 4200m/min, 130 DEG C of temperature, oil applying rate 0.9%, prepared 150dtex/36f is combined FDY from curling nylon.
Embodiment 4
The relative viscosity of COPA is 3.1, and fusing point is 205 DEG C, does aqueous less than 100ppm, each area's temperature 200 of screw rod of cutting into slices
～250 DEG C；The relative viscosity of PA is 2.6, does aqueous less than 100ppm, 250～270 DEG C of each area's temperature of screw rod of cutting into slices.
COPA and PA's is compound than being 40：60, spinneret orifice is 8-shaped as shown in Figure 2, and spinning body temperature is 280 DEG C,
Special cooling cover, 0.4～0.6m/s of cross air blasting wind speed, the first hot-rolling speed 4200m/ are installed under the every synnema for going out spinneret
Min, temperature 70 C, the second hot-rolling speed 4400m/min, 140 DEG C of temperature, oil applying rate 1.0%, prepared 200dtex/48f from
Curling nylon is combined FDY.
The main preparation technology of table 1 and fibrous physics index
Above-described embodiment modification by copolymerization nylon (COPA) and conventional nylon (PA) are that raw material, one-step method is obtained from curling nylon
Fiber, and cooled down by the cooling cover of particular design, the fiber is because being passed through using the nylon with different shrinkages
Compound mode is obtained side by side, can produce crimp contraction without bullet is added so as to more preferable than conventional nylon fiber
Batch performance, elastic recovery rate and flexibility, the fabric that is made with which has excellent elasticity and comfortableness.
Above content be with reference to the invention preferred implementation provided technical scheme is made further in detail
Describe in detail bright, it is impossible to assert that the invention is embodied as being confined to these explanations above-mentioned, for the affiliated technology of the invention
For the those of ordinary skill in field, without departing from the concept of the premise of the invention, some simple deductions can also be made
Or replace, should all be considered as belonging to the protection domain of the invention.
Claims (9)
1. a kind of from the processing technique for crimping nylon fiber, it is characterised in that：With modification by copolymerization nylon and conventional nylon as raw material,
Melt extruding through two screw extruders respectively, double-component composite spinning casing and filament spinning component is entered after each self-measuring, and is led to
After the same spinneret orifice crossed on spinneret sprays different melts, then the cooling of cooled sleeve, oil, drawing-off, thermal finalization, winding
Spinning process is completed, the different contraction nylon fiber of prepared veneer.
2. a kind of from the processing technique for crimping nylon fiber as claimed in claim 1, it is characterised in that：Described modification of nylon
Be with PA6 as main component, single by adding one or more in PA66, PA1010, PA1012, PA1212, PA10, PA11
Body is obtained；The fusing point of modification of nylon is 175～205 DEG C, relative viscosity 3.0 ± 0.10.
3. a kind of from the processing technique for crimping nylon fiber as claimed in claim 1, it is characterised in that：Described PA be PA6,
PA66, PA1010, PA1012 or PA1212.
4. a kind of from the processing technique for crimping nylon fiber as claimed in claim 1, it is characterised in that：Described refrigerating work procedure
In, 0.4～0.6m/s of wind speed.
5. a kind of from the processing technique for crimping nylon fiber as claimed in claim 1, it is characterised in that：On described spinneret
It is provided with special-shaped spinneret orifice or circular spinneret orifice.
6. a kind of from the processing technique for crimping nylon fiber as claimed in claim 1, it is characterised in that：Described COPA screw rod
200～250 DEG C of each area's temperature, 250～270 DEG C of each area's temperature of PA screw rod, spinning body temperature is 270～280 DEG C.
7. a kind of from the processing technique for crimping nylon fiber as claimed in claim 1, it is characterised in that：Described cooling cover
To be made up of protecgulum and bonnet, protecgulum with bonnet all in semicylindrical structure, and protecgulum, after cover and be respectively arranged with aperture,
Protecgulum fastens the cooling cover to form tubular structure with bonnet.
8. a kind of from the processing technique for crimping nylon fiber as claimed in claim 1, it is characterised in that：Described spinning technique
For：First hot-rolling speed, 3600～4200 m/min, 50～70 DEG C of temperature；Second hot-rolling speed, 4000～4400 m/min, temperature
120～140 DEG C of degree.
9. a kind of from the processing technique for crimping nylon fiber as claimed in claim 1, it is characterised in that：Described COPA and PA
Compound than be 40：60～60：40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998793.XA CN106435783A (en) | 2016-11-14 | 2016-11-14 | Process for processing self-crimping nylon fibers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998793.XA CN106435783A (en) | 2016-11-14 | 2016-11-14 | Process for processing self-crimping nylon fibers |
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| CN106435783A true CN106435783A (en) | 2017-02-22 |
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| CN201610998793.XA Pending CN106435783A (en) | 2016-11-14 | 2016-11-14 | Process for processing self-crimping nylon fibers |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107164818A (en) * | 2017-07-07 | 2017-09-15 | 江苏海阳化纤有限公司 | A kind of nylon fiber and preparation method thereof |
| CN109355716A (en) * | 2018-12-04 | 2019-02-19 | 吴江精美峰实业有限公司 | A kind of process units and its production method of nylon 6 and nylon66 fiber composite elastic fiber arranged side by side |
| CN111411407A (en) * | 2020-05-09 | 2020-07-14 | 浙江佳人新材料有限公司 | Production process of regenerated super-dull elastic composite yarn |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107164818A (en) * | 2017-07-07 | 2017-09-15 | 江苏海阳化纤有限公司 | A kind of nylon fiber and preparation method thereof |
| CN107164818B (en) * | 2017-07-07 | 2020-04-10 | 江苏海阳化纤有限公司 | Nylon fiber and preparation method thereof |
| CN109355716A (en) * | 2018-12-04 | 2019-02-19 | 吴江精美峰实业有限公司 | A kind of process units and its production method of nylon 6 and nylon66 fiber composite elastic fiber arranged side by side |
| CN111411407A (en) * | 2020-05-09 | 2020-07-14 | 浙江佳人新材料有限公司 | Production process of regenerated super-dull elastic composite yarn |
| CN111411407B (en) * | 2020-05-09 | 2021-12-14 | 浙江佳人新材料有限公司 | Production process of regenerated super-dull elastic composite yarn |
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Application publication date: 20170222 |