CN103046147B - The manufacture method of light network polyamide fibre 6DTY of a kind of full-dull thin dawn - Google Patents
The manufacture method of light network polyamide fibre 6DTY of a kind of full-dull thin dawn Download PDFInfo
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Abstract
The embodiment of the invention discloses the manufacture method of light network polyamide fibre 6DTY of a kind of full-dull thin dawn, comprise the following steps: a) melting high-speed spinning; B) lateral blowing cooling; C) oil, boundling; D) reel; E) seal wire heating; F) false twisting is cooled; G) drawing-off, finally obtains full-dull thin dawn light network polyamide fibre 6DTY.The present invention is by the adjustment of the selection, spinning temperature, cooling condition, spinning speed, oil applying rate, winding speed etc. of spinnerets, solve that the silk that wafts in full-dull thin dawn light network polyamide fibre 6POY production process is many, broken end is many, to expire cylinder rate low, aft-loaded airfoil yarn bulking intensity is uneven, network lack of homogeneity, deadlock put many, the powerful low problem of lousiness, make production steady quality, yield rate is high.
Description
Technical field
The invention belongs to spining technology field, particularly the manufacture method of light network polyamide fibre 6DTY of a kind of full-dull thin dawn.
Background technology
According to TITANIUM DIOXIDE DELUSTRANT TiO in slices of caprone
2the difference of content, slices of caprone is generally divided into greatly light, half delustring and full-dull.TiO in large bright chip
2mass fraction is 0%, the TiO in semi-dulling chips
2mass fraction is 0.30%+0.05%, the TiO in full-dull polyester
2mass fraction is up to 2.5% ± 0.1%.The essential difference of semi-dulling chips and full-dull polyester is TiO
2content is different, and the latter is the former more than 8 times.The advantages such as full-dull polyester not only reduces the reflective of fiber and scintillation, and it is soft to make subsequent fiber have gloss, and deep-cutting gorge is good, and fabric fall is high, and screening performance is strong, can meet the demand making high-grade clothing.
Concerning full-dull nylon 6 spinning, higher TIO2 content, both the effect of plasticising had been played, also make the impurity of melt increase, but the mobility of melt is deteriorated in spinning process, causes spinnability to be deteriorated, the silk that wafts is many, end breakage rate increases, and full cylinder rate reduces, and aft-loaded airfoil yarn bulking intensity is uneven, network lack of homogeneity, stiff some lousiness is many, intensity is low.In order to obtain excellent spinnability and fibre property, except full-dull nylon 6-slice and spinning equipment be there are certain requirements, also reasonably must select spinning process condition, as the selection, spinning temperature, cooling condition, spinning speed, oil applying rate, winding speed etc. of spinnerets.
Therefore, for the above-mentioned defect existed in currently available technology, be necessary to study in fact, to provide a kind of scheme, solve the defect existed in prior art, avoid causing the silk that wafts of full-dull thin dawn light network polyamide fibre 6DTY many, end breakage rate increases, full cylinder rate reduces, and aft-loaded airfoil yarn bulking intensity is uneven, network lack of homogeneity, stiff some lousiness is many, intensity is low.
Summary of the invention
For solving the problem, the object of the present invention is to provide the manufacture method of light network polyamide fibre 6DTY of a kind of full-dull thin dawn, by the adjustment of the selection, spinning temperature, cooling condition, spinning speed, oil applying rate, winding speed etc. of spinnerets, form the manufacture method of light network polyamide fibre 6DTY of a set of full-dull thin dawn.
For achieving the above object, technical scheme of the present invention is:
A manufacture method of full-dull thin dawn light network polyamide fibre 6DTY, comprises the following steps:
A) melting high-speed spinning: full-dull nylon 6 slice carries out melting high-speed spinning, wherein, screw pressure is 115-125kg/cm
2, screw speed is 30-45r/min, and spinning temperature is 250-260 DEG C; The spinneret orifice of the spinning pack adopted is circular, and diameter is 0.25-0.30mm, draw ratio is 2.5-3.5;
B) lateral blowing cooling: wind-warm syndrome 16-18 DEG C, humidity 90-95%, wind speed 0.38-0.50m/s;
C) oil, boundling: the fiber through lateral blowing cooling to oil boundling through oil thrower, and finish used is the nylon oiling agent pure water emulsion of 6-8%, and oil applying rate is 0.6-0.7%;
D) reel: the tow that oils is through pre-Network device, draw-off godet, master network device, and start the spinning that reels, spinning speed is 4200-4300m/min, obtains POY long filament;
E) seal wire heating: by POY long filament through seal wire, feed silk roller, twist arrester to heating cabinet, heating-up temperature is 170 DEG C-180 DEG C;
F) cool false twisting: through coldplate cooling after the heating of POY long filament, enter false twister, friction ingot group is 1-5-1, and carry out false twisting, D/Y ratio is set between 1.60-1.80;
G) drawing-off: after false twisting, fiber enters drawing rollers, and described drawing rollers rotating speed is 600-650m/min, and carry out drawing-off, drafting multiple is between 1.26-1.28;
H) network: after drawing-off, enters the nozzle of interlace, and adjustment compressed air pressure carries out network between 0.10-0.20MPa, and then oil, winding, obtains full-dull thin dawn light network polyamide fibre 6DTY.
Preferably, described step a) in, as follows setting is filtered to spinneret component, T-shaped packing ring, pressure cover, bowl-type circle, distribution plate, 50 order screen packs, ground floor 80-100 order metal sand, second layer 60-80 order metal sand, seven layers of screen pack and spinnerets, wherein seven layers of screen pack are ground floor 32 order, the second layer 50 order, third layer 150 order, the 4th layer of 15 μm of metal nonwoven fabric, layer 5 400 order, layer 6 250 order, layer 7 compresses aluminium circle.
Preferably, described step e) in twist arrester be ceramic twist arrester.
Compared with prior art, the present invention has following beneficial effect:
(1) the filter assemblies Curve guide impeller by carrying out spinneret component, improves the service life of filter assemblies.
(2) whether spinning temperature is selected appropriate, directly having influence on the quality of fiber and normally carrying out of spinning process, by controlling at 250-260 DEG C by spinning temperature, achieving the requirement to full-dull thin dawn light network extrusion spinning temperature.
(3) in spinning process, the skin-friction force of full-dull silk is greater than half delustring silk, frictional force is crossed conference and is caused tension fluctuation, thus affect fiber dyeing performance, therefore, selection full-dull is oil solution dedicated, improves lubricity and the coherent of fiber, reduces the frictional force with each parts in stretching, winding process.
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of the manufacture method of the full-dull thin dawn light network polyamide fibre 6DTY of the embodiment of the present invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
On the contrary, the present invention is contained any by the substituting of making on marrow of the present invention and scope of defining of claim, amendment, equivalent method and scheme.Further, in order to make the public have a better understanding to the present invention, in hereafter details of the present invention being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the present invention completely for a person skilled in the art yet.
With reference to figure 1, be depicted as the flow chart of steps of the manufacture method of the full-dull thin dawn light network polyamide fibre 6DTY of the embodiment of the present invention, it comprises the following steps:
A) melting high-speed spinning: full-dull nylon 6 slice carries out melting high-speed spinning, wherein, screw pressure is 115-125kg/cm
2, screw speed is 30-45r/min, and spinning temperature is 250-260 DEG C; The spinneret orifice of the spinning pack adopted is circular, and diameter is 0.25-0.30mm, draw ratio is 2.5-3.5;
Wherein, as follows setting is filtered to spinneret component, T-shaped packing ring, pressure cover, bowl-type circle, distribution plate, 50 order screen packs, ground floor 80-100 order metal sand, second layer 60-80 order metal sand, seven layers of screen pack and spinnerets, wherein seven layers of screen pack are ground floor 32 order, the second layer 50 order, third layer 150 order, the 4th layer of 15 μm of metal nonwoven fabric, layer 5 400 order, layer 6 250 order, layer 7 compresses aluminium circle.Produce full-dull fine-denier polyamide fiber 6 POY spinnerets slightly different with conventional spinnerets, the little hole count in plate footpath is many.Due to TiO in full-dull polyester
2content high, thus adjust spinneret component filter design very important.If component filters medium is too thin, component pressure can be caused sharply to raise, and make to change the raising of plate frequency, thus affect the service life of assembly, and stock-dye uniformity can be affected.By the above filter assemblies Curve guide impeller carried out spinneret component, improve the service life of filter assemblies.
Whether spinning temperature is selected appropriate, directly has influence on the quality of fiber and normally carrying out of spinning process.Spinning temperature is too high, and the thermal decomposition of polymer can be made to aggravate, and causes relative molecular weight reduce and occur cavity filament, and occurs that capillary ruptures because melt viscosity is too low, formed " head ".Concerning full-dull nylon 6 spinning, higher TiO
2content had both played the effect of plasticising, also made the impurity of melt increase.Spinning temperature is too high, and melt residence time is long, and in melt, low-molecular material content just increases, and can have a strong impact on fiber quality; Spinning temperature is too low, and melt viscosity can be made too high, increases transport pump burden, often occur leaking material, and extrudate is exported expand phenomenon to be tending towards serious, even there is " melt fracture " phenomenon, affect normal spinning, hardhead silk is also there will be time serious, silk is turned white, and secretly matt, feel is hardened, during after-drawing, broken end is serious, even can not stretch.Meanwhile, the fluctuation of spinning temperature is large on fiber quality impact.Therefore, suitable temperature and control temperature stable very important, spinning temperature controls at 250-260 DEG C, achieves the requirement to spinning temperature.
B) lateral blowing cooling: wind-warm syndrome 16-18 DEG C, humidity 90-95%, wind speed 0.38-0.50m/s;
When spinning, should ensure that cooling condition is stable, even, avoid the impact being subject to external condition, thus make polymer melt stream variations in temperature, velocity variations, freezing point position and suffered axial tension in cooling forming process keep stable, to the control of the cooling condition mainly temperature of controlled cooling model air, humidity, air quantity, blast, flow regime and cabinet temperature.
C) oil, boundling: the fiber through lateral blowing cooling to oil boundling through oil thrower, and finish used is the nylon oiling agent pure water emulsion of 6-8%, and oil applying rate is 0.6-0.7%;
In spinning process, the skin-friction force of full-dull silk is greater than half delustring silk, frictional force is crossed conference and is caused tension fluctuation, thus affect fiber dyeing performance, therefore, selection full-dull is oil solution dedicated, improves lubricity and the coherent of fiber, reduces the frictional force with each parts in stretching, winding process.
D) reel: the tow that oils is through pre-Network device, draw-off godet, master network device, and start the spinning that reels, spinning speed is 4200-4300m/min, obtains POY long filament;
E) seal wire heating: by POY long filament through seal wire, feed silk roller, twist arrester to heating cabinet, heating-up temperature is 170 DEG C-180 DEG C;
F) cool false twisting: through coldplate cooling after the heating of POY long filament, enter false twister, friction ingot group is 1-5-1, and carry out false twisting, D/Y ratio is set between 1.60-1.80;
G) drawing-off: after false twisting, fiber enters drawing rollers, and described drawing rollers rotating speed is 600-650m/min, and carry out drawing-off, drafting multiple is between 1.26-1.28;
H) network: after drawing-off, enters the nozzle of interlace, and adjustment compressed air pressure carries out network between 0.10-0.20MPa, and then oil, winding, obtains full-dull thin dawn light network polyamide fibre 6DTY.
By to the technological parameter after the optimization adopting the embodiment of the present invention in each step, the full-dull thin dawn light network polyamide fibre 6DTY of high-quality can be manufactured out, below by way of several specific embodiment, the parameter adopted in each step is described further.
Embodiment 1
A manufacture method of full-dull thin dawn light network polyamide fibre 6DTY, comprises the following steps:
A) melting high-speed spinning: full-dull nylon 6 slice carries out melting high-speed spinning, wherein, screw pressure is 115kg/cm
2, screw speed is 30r/min, and spinning temperature is 252 DEG C; The spinneret orifice of the spinning pack adopted is circular, and diameter is 0.30mm, draw ratio is 2.5;
B) lateral blowing cooling: wind-warm syndrome 16 DEG C, humidity 90%, wind speed 0.40m/s;
C) oil, boundling: the fiber through lateral blowing cooling to oil boundling through oil thrower, and finish used is the nylon oiling agent pure water emulsion of 6%, and oil applying rate is 0.6%;
D) reel: the tow that oils is through pre-Network device, draw-off godet, master network device, and start the spinning that reels, spinning speed is 4200m/min, obtains POY long filament;
E) seal wire heating: by POY long filament through seal wire, feed silk roller, twist arrester to heating cabinet, heating-up temperature is 170 DEG C;
F) cool false twisting: through coldplate cooling after the heating of POY long filament, enter false twister, friction ingot group is 1-5-1, and carry out false twisting, D/Y ratio is set in 1.65;
G) drawing-off: after false twisting, fiber enters drawing rollers, and described drawing rollers rotating speed is 600m/min, and carry out drawing-off, drafting multiple is 1.265;
H) network: after drawing-off, enters the nozzle of interlace, and adjustment compressed air pressure carries out network at 0.10MPa, and then oil, winding, obtains full-dull thin dawn light network polyamide fibre 6DTY.
To the full-dull produced by the above processing step thin dawn, the product quality parameters of light network polyamide fibre 6DTY detects, for the full-dull thin dawn light network polyamide fibre 6DTY of 96 monofilament compositions, its parameter detecting is as follows: line density is 154.9dtex, line density coefficient of variation CV is 0.81%, fracture strength is 3.8cN/dtex, fracture strength coefficient of variation CV is 5.8%, elongation at break is 24.5%, extension at break coefficient of variation CV is 5.85%, crimp contraction is 23.3%, curling stability is 29.6%, dye uniformity (ash card) is 4 grades, reach the requirement of high-class product, the silk that wafts solved in full-dull thin dawn light network polyamide fibre 6POY production process is many, broken end is many, full cylinder rate is low, aft-loaded airfoil yarn bulking intensity is uneven, network lack of homogeneity, stiff some lousiness is many, powerful low problem, make production steady quality, yield rate is high.
Embodiment 2
A manufacture method of full-dull thin dawn light network polyamide fibre 6DTY, comprises the following steps:
A) melting high-speed spinning: full-dull nylon 6 slice carries out melting high-speed spinning, wherein, screw pressure is 125kg/cm
2, screw speed is 45r/min, and spinning temperature is 260 DEG C; The spinneret orifice of the spinning pack adopted is circular, and diameter is 0.25mm, draw ratio is 3.0;
B) lateral blowing cooling: wind-warm syndrome 18 DEG C, humidity 95%, wind speed 0.6m/s;
C) oil, boundling: the fiber through lateral blowing cooling to oil boundling through oil thrower, and finish used is the nylon oiling agent pure water emulsion of 8%, and oil applying rate is 0.7%;
D) reel: the tow that oils is through pre-Network device, draw-off godet, master network device, and start the spinning that reels, spinning speed is 4300m/min, obtains POY long filament;
E) seal wire heating: by POY long filament through seal wire, feed silk roller, twist arrester to heating cabinet, heating-up temperature is 180 DEG C;
F) cool false twisting: through coldplate cooling after the heating of POY long filament, enter false twister, friction ingot group is 1-5-1, and carry out false twisting, D/Y ratio is set in 1.80;
G) drawing-off: after false twisting, fiber enters drawing rollers, and described drawing rollers rotating speed is 650m/min, and carry out drawing-off, drafting multiple is 1.28;
H) network: after drawing-off, enters the nozzle of interlace, and adjustment compressed air pressure carries out network at 0.20MPa, and then oil, winding, obtains full-dull thin dawn light network polyamide fibre 6DTY.
To the full-dull produced by the above processing step thin dawn, the product quality parameters of light network polyamide fibre 6DTY detects, for the full-dull thin dawn light network polyamide fibre 6DTY of 96 monofilament compositions, its parameter detecting is as follows: line density is 153.6dtex, line density coefficient of variation CV is 0.95%, fracture strength is 3.9cN/dtex, fracture strength coefficient of variation CV is 4.5%, elongation at break is 20.5%, extension at break coefficient of variation CV is 6.35%, crimp contraction is 22.5%, curling stability is 25.7%, dye uniformity (ash card) is 4 grades, reach the requirement of high-class product, the silk that wafts solved in full-dull thin dawn light network polyamide fibre 6POY production process is many, broken end is many, full cylinder rate is low, aft-loaded airfoil yarn bulking intensity is uneven, network lack of homogeneity, stiff some lousiness is many, powerful low problem, make production steady quality, yield rate is high.
Embodiment 3
A manufacture method of full-dull thin dawn light network polyamide fibre 6DTY, is characterized in that, comprise the following steps:
A) melting high-speed spinning: full-dull nylon 6 slice carries out melting high-speed spinning, wherein, screw pressure is 120kg/cm
2, screw speed is 35r/min, and spinning temperature is 255 DEG C; The spinneret orifice of the spinning pack adopted is circular, and diameter is 0.27mm, draw ratio is 3.0;
B) lateral blowing cooling: wind-warm syndrome 17 DEG C, humidity 92%, wind speed 0.45m/s;
C) oil, boundling: the fiber through lateral blowing cooling to oil boundling through oil thrower, and finish used is the nylon oiling agent pure water emulsion of 7%, and oil applying rate is 0.65%;
D) reel: the tow that oils is through pre-Network device, draw-off godet, master network device, and start the spinning that reels, spinning speed is 4250m/min, obtains POY long filament;
E) seal wire heating: by POY long filament through seal wire, feed silk roller, twist arrester to heating cabinet, heating-up temperature is 175 DEG C;
F) cool false twisting: through coldplate cooling after the heating of POY long filament, enter false twister, friction ingot group is 1-5-1, and carry out false twisting, D/Y ratio is set in 1.70;
G) drawing-off: after false twisting, fiber enters drawing rollers, and drawing rollers rotating speed is 600m/min, and carry out drawing-off, drafting multiple is 1.275;
H) network: after drawing-off, enters the nozzle of interlace, and adjustment compressed air pressure carries out network at 0.15MPa, and then oil, winding, obtains full-dull thin dawn light network polyamide fibre 6DTY.
To the full-dull produced by the above processing step thin dawn, the product quality parameters of light network polyamide fibre 6DTY detects, for the full-dull thin dawn light network polyamide fibre 6DTY of 96 monofilament compositions, its parameter detecting is as follows: line density is 154.6dtex, line density coefficient of variation CV is 0.95%, fracture strength is 4.1cN/dtex, fracture strength coefficient of variation CV is 6.5%, elongation at break is 23.7%, extension at break coefficient of variation CV is 5.75%, crimp contraction is 21.5%, curling stability is 24.5%, dye uniformity (ash card) is 4 grades, reach the requirement of high-class product, the silk that wafts solved in full-dull thin dawn light network polyamide fibre 6POY production process is many, broken end is many, full cylinder rate is low, aft-loaded airfoil yarn bulking intensity is uneven, network lack of homogeneity, stiff some lousiness is many, powerful low problem, make production steady quality, yield rate is high.
Embodiment 4
A manufacture method of full-dull thin dawn light network polyamide fibre 6DTY, is characterized in that, comprise the following steps:
A) melting high-speed spinning: full-dull nylon 6 slice carries out melting high-speed spinning, wherein, screw pressure is 118kg/cm
2, screw speed is 40r/min, and spinning temperature is 260 DEG C; The spinneret orifice of the spinning pack adopted is circular, and diameter is 0.30mm, draw ratio is 2.5;
B) lateral blowing cooling: wind-warm syndrome 16 DEG C, humidity 93%, wind speed 0.5m/s;
C) oil, boundling: the fiber through lateral blowing cooling to oil boundling through oil thrower, and finish used is the nylon oiling agent pure water emulsion of 8%, and oil applying rate is 0.7%;
D) reel: the tow that oils is through pre-Network device, draw-off godet, master network device, and start the spinning that reels, spinning speed is 4200m/min, obtains POY long filament;
E) seal wire heating: by POY long filament through seal wire, feed silk roller, twist arrester to heating cabinet, heating-up temperature is 170 DEG C;
F) cool false twisting: through coldplate cooling after the heating of POY long filament, enter false twister, friction ingot group is 1-5-1, and carry out false twisting, D/Y ratio is set in 1.60;
G) drawing-off: after false twisting, fiber enters drawing rollers, and described drawing rollers rotating speed is 6200m/min, and carry out drawing-off, drafting multiple is 1.273;
H) network: after drawing-off, enters the nozzle of interlace, and adjustment compressed air pressure carries out network at 0.13MPa, and then oil, winding, obtains full-dull thin dawn light network polyamide fibre 6DTY.
To the full-dull produced by the above processing step thin dawn, the product quality parameters of light network polyamide fibre 6DTY detects, for the full-dull thin dawn light network polyamide fibre 6DTY of 96 monofilament compositions, its parameter detecting is as follows: line density is 154.5dtex, line density coefficient of variation CV is 0.91%, fracture strength is 4.3cN/dtex, fracture strength coefficient of variation CV is 5.6%, elongation at break is 23.2%, extension at break coefficient of variation CV is 5.65%, crimp contraction is 20.5%, curling stability is 23.7%, dye uniformity (ash card) is 4 grades, reach the requirement of high-class product, the silk that wafts solved in full-dull thin dawn light network polyamide fibre 6POY production process is many, broken end is many, full cylinder rate is low, aft-loaded airfoil yarn bulking intensity is uneven, network lack of homogeneity, stiff some lousiness is many, powerful low problem, make production steady quality, yield rate is high.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a manufacture method of full-dull thin dawn light network polyamide fibre 6DTY, is characterized in that, comprise the following steps:
A) melting high-speed spinning: full-dull nylon 6 slice carries out melting high-speed spinning, wherein, screw pressure is 125kg/cm
2, screw speed is 40-45r/min, and spinning temperature is 252-255 DEG C; Adopt the spinneret orifice of spinning pack to be circular, diameter is 0.25-0.30mm, draw ratio is 3-3.5;
Wherein as follows setting is filtered to spinneret component, T-shaped packing ring, pressure cover, bowl-type circle, distribution plate, 50 order screen packs, ground floor 80-100 order metal sand, second layer 60-80 order metal sand, seven layers of screen pack and spinnerets, wherein seven layers of screen pack are ground floor 32 order, the second layer 50 order, third layer 150 order, 4th layer of 15 μm of metal nonwoven fabric, layer 5 400 order, layer 6 250 order, layer 7 compresses aluminium circle;
B) lateral blowing cooling: wind-warm syndrome 16-18 DEG C, humidity 90-95%, wind speed 0.38-0.50m/s;
C) oil, boundling: the fiber through lateral blowing cooling to oil boundling through oil thrower, and finish used is the nylon oiling agent pure water emulsion of 6-7%, and oil applying rate is 0.6-0.7%;
D) reel: the tow that oils is through pre-Network device, draw-off godet, master network device, and start the spinning that reels, spinning speed is 4200-4300m/min, obtains POY long filament;
E) seal wire heating: by POY long filament through seal wire, feed silk roller, twist arrester to heating cabinet, heating-up temperature is 180 DEG C;
F) cool false twisting: carry out false twisting through coldplate cooling after the heating of POY long filament, enter false twister, friction ingot group is that 1-5-1, D/Y ratio is set in 1.80;
G) drawing-off: after false twisting, fiber enters drawing rollers, and described drawing rollers rotating speed is 600-650m/min, and carry out drawing-off, drafting multiple is between 1.26-1.28;
H) network: after drawing-off, enters the nozzle of interlace, and adjustment compressed air pressure carries out network between 0.10-0.20MPa, and then oil, winding, obtains full-dull thin dawn light network polyamide fibre 6DTY.
2. the manufacture method of full-dull according to claim 1 thin dawn light network polyamide fibre 6DTY, is characterized in that, described step e) in twist arrester be ceramic twist arrester.
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