CN102181951A - Processing method of high-strength low-shrinkage nylon 6 fine denier filament - Google Patents
Processing method of high-strength low-shrinkage nylon 6 fine denier filament Download PDFInfo
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Abstract
The invention discloses a processing method of a high-strength low-shrinkage nylon 6 fine denier filament, belonging to the technical field of nylon filament processing. The method comprises the following steps: preparing materials: adding the nylon 6 slices into a bin of nitrogen protective gas to obtain a material to be melted; melting: introducing the material to be melted into a screw extruder for melting to obtain a melt; forming: introducing the melt from the upper part of a spinning box, and ejecting from a spinneret orifice of a spinneret plate to obtain a filament bundle; cooling: introducing the filament bundle into a slow-cooling area for slow cooling, forming through side-blowing air cooling, and further cooling through a channel; oiling and pre-interlacing: oiling the cooling-formed filament bundle through an oil lip or oil wheel, and pre-interlacing; drafting: feeding the filament bundle to be drafted through a feeding roller, drafting through a heat roller, and then performing relax-type setting to obtain the drafting-set filament; and re-interlacing and re-oiling: re-interlacing and re-oiling the drafting-set filament before packaging to obtain the high-strength low-shrinkage nylon 6 fine denier filament. The method can adapt to different purposes of products, and can be applied to the occasions having rigorous requirements on the breaking strength and dry heat shrinkage.
Description
Technical field
The invention belongs to the POLYAMIDE YARNS processing technique field, be specifically related to a kind of processing method of high-strength low contraction polyamide fibre 6 fine denier filaments.
Background technology
Polyamide fibre 6 is polyamides 6 resins, also claims polycaprolactam, also is called PA6 or nylon 6, and the processing method of known polyamide fibre 6 fine denier high intensity silks mainly contains one-step method and two step method.One-step method is that present industry is generally used and thinks advanced method that its technical process is: section fusion, screw extruder are extruded, measuring pump quantitatively is pressed into filament spinning component, the ejection of spinnerets spinneret orifice, lateral blowing cooling, path are further cooled off, oiling roller oils, interlacing and high-speed winding behind godet roller.The drafting multiple of this method is between 1.5-2.5, and the drafting forming temperature is at 160-180 ℃, and the ultimate strength that obtains polyamide fibre 6 fine denier filaments is 6.0cN/dtex, xeothermic contraction 〉=8.0%; The technical process of two-step method is followed successively by: produce the UDY silk earlier, again the UDY silk is led typing through overheated, obtain full drawing-off high strength yarn.3.5-4.0 times of drafting multiples, the drafting forming temperature is 160-190 ℃, the ultimate strength of silk is 6.0Cn/dtex, xeothermic contraction 〉=12%.
The above-mentioned continuous synthetic fibre silk of producing by one-step method and two-step method since ultimate strength particularly dry-hot shrinkage be difficult to make the application surface expansion greatly, for example be difficult to relievedly such as on volume joint product, leather goods product, coated fabric, filter cloth, geotextiles, war products and automotive upholstery product, using.As the industry's knowledge of the reason, the dry-hot shrinkage conference has a strong impact on the chi overstability of fabric and the uniformity of dyeing etc.
In disclosed Chinese patent literature, be no lack of and be seen in about the continuous synthetic fibre 6 fine denier filaments technology contents of (industry also is accustomed to claiming continuous synthetic fibre 6 industry silks), as publication No. CN101713106A(wear-resistant snow-white polyamide fibre 6 industry silks), continuous synthetic fibre cool fiber filament of publication number CN101665986A(mica and production method thereof), publication number CN101665987A(alloy germanium chinlon filament and production method thereof), continuous synthetic fibre long filament of publication number CN101665988A(ash bamboo charcoal and production method thereof), the preparation method of the continuous synthetic fibre self-luminous colored fiber of publication No. CN101724925A() and the continuous synthetic fibre 6 continuous polymerizations production of publication No. CN101885842A(worker generation), or the like.
Typical as authorize public affairs CN101089265B to recommend color mixed fibre fine denier chinlon stretch yarn and manufacture method thereof, the step of this patented method is: add the Masterbatch of raw material weight 2-10% and make coloured preorientation drafted fibre in materials of the synthetic fibre; The preorientation drafted fibre is carried out 8-24 hour balance relaxation processes under the condition of 25 ± 3 ℃ and humidity 65 ± 5%; To be wound in color mixed fibre fine denier chinlon stretch yarn through the preorientation drafted fibre of overbalance relaxation processes.It is that a kind of polyamide fibre functional fiber of modification does not belong to one-step method (FDY) category, and this fiber good hand feeling softness, air permeable effect is good and have functions such as antibiotic health care; But it powerful low, elongation is big, dry-hot shrinkage is big.
The production method of the polyamide fibre 6 micro Denier full-drawn yarns that provide of Granted publication CN1262694C and for example, it is that polyamide fibre 6 is imported fusion in the screw extruders; Fused materials is sent into spinning manifold be pressed into high potential assembly, form crin (the temperature 262-280 in the spinning manifold ℃); Cooling, lateral blowing are also introduced the path and are continued cooling; Drawing-off obtains polyamide fibre 6 micro Denier full-drawn yarns.Produce the FDY product but powerful on the low side though this method is an one-step method, xeothermic contraction is bigger.
In view of above-mentioned prior art, be necessary to be improved, for this reason, the applicant has passed through long-term exploration and trial, and be experimental results show that it is feasible through what confidential state did down, and technical scheme described below produces under this background.
Summary of the invention
Task of the present invention is to provide a kind of and helps to significantly improve ultimate strength and favourable remarkable reduction dry-hot shrinkage and use and ensure that polyamide fibre 6 fine denier filaments satisfy the processing method that brute force and dry-hot shrinkage is had high-strength low contraction polyamide fibre 6 fine denier filaments that the harsh product that requires uses.
Task of the present invention is finished like this, and a kind of processing method of high-strength low contraction polyamide fibre 6 fine denier filaments may further comprise the steps:
A) get the raw materials ready, chinlon 6 section joins in the feed bin of nitrogen protection gas, obtains treating melting charge;
B) fusion will treat that melting charge introduces fusion in the screw extruder with electric heating function, and the melt temperature of control screw extruder obtains melt;
C) moulding is introduced melt through the measuring pump metering to be pressed into filament spinning component and by the spray silk from manifold top through melt pipe
The spinneret orifice ejection of plate obtains tow;
D) cooling is introduced the slow cooling of slow cooling district with tow, by side-blown reveal blowing cooling forming, further cools off through the path more then, obtains the tow of cooling forming;
E) oil and pre-network, oil and pre-network, control the stream pressure of pre-network, obtain treating the drawing-off tow by oily lip or oil tanker tow to cooling forming;
F) drawing-off will treat that the drawing-off tow by the feeding of feeding roller, carries out through first, second group hot-rolling and the 3rd group of hot-rolling successively
Drawing-off, and in the tow formula typing that relaxes during by way of the 3rd group of hot-rolling and the 4th group of hot-rolling, the temperature of hot-rolling is respectively organized in control drafting multiple and control, obtains the drafting forming silk;
G) network and reoiling again, the counter extensioin fixed wire carries out network again and reoils and package, controls the stream pressure and the control winding speed of network again, obtains high-strength low contraction polyamide fibre 6 fine denier filaments.
The melt temperature of the screw extruder of control in a specific embodiment of the present invention, step B) is that melt temperature is controlled to be 220-280 ℃.
In another specific embodiment of the present invention, step C) melt pipe described in and manifold top are by the biphenyl steam insulation of circulation, and the temperature of described biphenyl steam insulation is 255-285 ℃.
In another specific embodiment of the present invention, step C) spinneret orifice described in is circular port or irregularly-shaped hole.
In another specific embodiment of the present invention, when described spinneret orifice was circular port, the aperture was 0.25-0.35mm.
Also have in the specific embodiment step D of the present invention) described in the temperature of lateral blowing be 18-25 ℃, humidity is 70-85%RH.
The stream pressure of the pre-network of control more of the present invention and in concrete example, step e) is that stream pressure is controlled to be 0.08-0.2MPa.
In of the present invention and then specific embodiment, step F) the described control drafting multiple in is: first group of hot-rolling is controlled to be 1.01-1.1 doubly with the drafting multiple that feeds roller, the drafting multiple of second group of hot-rolling and first group of hot-rolling is controlled to be 2.5-4.0 doubly, the drafting multiple of the 3rd group of hot-rolling and second group of hot-rolling is controlled to be 1.2-2.0 doubly, the drafting multiple of the 4th group of hot-rolling and the 3rd group of hot-rolling is controlled to be 0.98-0.9 doubly, and described lax formula typing is with the speed of the 3rd group of hot-rolling speed greater than the 4th group of hot-rolling.
Of the present invention again more and in specific embodiment, step F) temperature that hot-rolling is respectively organized in the control described in is: first group of heat roller temperature is controlled at 70-110 ℃, second group of heat roller temperature is controlled at 100-150 ℃, the 3rd group and the 4th group of heat roller temperature are controlled at 190-215 ℃, wherein, described feeding roller is a normal temperature.
In again of the present invention and then specific embodiment, step G) control described in the stream pressure of network again is 0.15-0.4MPa, and described control winding speed is that winding speed is controlled at 3500-4500m/min.
The tow of cooling forming is oiled and pre-network carries out secondary then and decides drawing-off secondary HEAT SETTING in technical scheme provided by the invention, drafting forming silk to lax formula typing carries out network again and reoils, the ultimate strength of polyamide fibre 6 fine denier filaments that obtain is reached more than the 6.6CN/dtex, xeothermic contraction≤4.0%, ultimate strength can exceed 10% than known one-step method, dry-hot shrinkage reduces about 50%, thereby the different purposes that can adapt to product, can be applied to that ultimate strength and dry-hot shrinkage are had the harsh occasion that requires, as through compiling joint product, the leather goods product, coated fabric, filter cloth, geotextiles, war products and automotive trim product or the like.
The specific embodiment
For make this specially office auditor particularly the public be able to fully understand technical spirit of the present invention, the applicant is described in more detail the present invention program in the following embodiments, but embodiment does not also mean that restriction to the present invention program, any form of making according to the present invention's design but not substantial variation all should be considered as technology category of the present invention.
Embodiment 1:
A) get the raw materials ready, in the feed bin of chinlon 6 section adding, obtain treating melting charge by nitrogen protection gas;
B) melting charge for the treatment of that fusion: will be by steps A) obtains is introduced fusion in the screw extruder with electric heating function, and the melt temperature of screw extruder is 265 ℃, obtains melt (promptly obtaining spinning melt);
C) moulding, will be by B) melt that obtains is that the melt pipe of 265 ℃ biphenyl steam insulation is introduced from manifold top through adopting temperature, same employing temperature is 265 ℃ a biphenyl steam insulation on the manifold, the melt that is incorporated in the manifold quantitatively is pressed into filament spinning component and by being to spray in the spinneret orifice of circle of 0.35mm by the aperture on the spinnerets, obtains tow through measuring pump;
D) cooling will be by step C) tow that obtains introduces slow cooling district's slow cooling, then by (by way of) lateral blowing the time by the lateral blowing cooling forming, further cool off through the path again, obtain the tow of cooling forming, the temperature of the side-blown in this step is that the temperature of wind is 25 ℃, and humidity is 70%RH;
E) oil and pre-network, by oily lip to by step D) tow of the cooling forming that obtains oils and pre-network, obtain the tow of drawing-off, network described here is that industry is known: under the effect of high velocity air, multifilament is dispelled be divided into several strands to tangle mutually and form the network joint, with a kind of air-texturing technology of the coherent that increases tow, the stream pressure of the network in this step is 0.08MPa;
F) drafting forming, will be by step e) obtain treat that the drawing-off tow is through feeding and successively through first, second and the 3rd group of hot-rolling carries out drawing-off, and draw through the 3rd group of hot-rolling at tow and to carry out the lax formula typing of heat when arriving at the 4th group of hot-rolling, specifically: the feeding roller is the normal temperature roller, feeding speed is controlled to be 918m/min, the temperature degree of first group of hot-rolling is controlled to be 105 ℃, linear velocity is controlled to be 940m/min, the temperature of second group of hot-rolling is controlled to be 140 ℃, the linear velocity of second group of hot-rolling is controlled to be 3000m/min, the temperature of the 3rd group of hot-rolling is controlled to be 200 ℃, the linear velocity of the 3rd group of hot-rolling is controlled to be 3950m/min, the temperature control of the 4th group of hot-rolling is made as 200 ℃, the linear velocity of the 4th group of hot-rolling is 3870m/min, wherein: the linear velocity of first group of hot-rolling is than the fast 20m/min of linear velocity of feeding roller, use and embody lax formula typing, first group of hot-rolling and the drafting multiple that feeds between the roller are 1.024 times, second, drafting multiple between first group of hot-rolling is 3.191 times, the 3rd, drafting multiple between second group of hot-rolling is 1.317 times, and the 4th, drafting multiple between the 3rd group of hot-rolling is 0.98 times, tow when the 3rd hot-rolling and the 4th group of hot-rolling, finalize the design (lax formula typing), that is to say the 3rd, the 4th group of hot-rolling is essentially setting roll, obtains the drafting forming silk through this step;
G) network and reoiling again, to by step F) the drafting forming silk that obtains carries out network again and reoils and package, and wherein, the stream pressure of network is controlled to be 0.3MPa again, winding speed during package is controlled to be 3800m/min, obtains continuous synthetic fibre 6 fine denier filaments of high intensity low shrinkage.
Embodiment 2:
A) get the raw materials ready, in the feed bin of chinlon 6 section adding, obtain treating melting charge by nitrogen protection gas;
B) melting charge for the treatment of that fusion: will be by steps A) obtains is introduced fusion in the screw extruder with electric heating function, and the melt temperature of screw extruder is 272 ℃, obtains melt (promptly obtaining spinning melt);
C) moulding, will be by B) melt that obtains is that the melt pipe of 270 ℃ biphenyl steam insulation is introduced from manifold top through adopting temperature, same employing temperature is 270 ℃ a biphenyl steam insulation on the manifold, the melt that is incorporated in the manifold quantitatively is pressed into filament spinning component and by being to spray in the spinneret orifice of circle of 0.3mm by the aperture on the spinnerets, obtains tow through measuring pump;
D) cooling will be by step C) tow that obtains introduces slow cooling district's slow cooling, then by (by way of) lateral blowing the time by the lateral blowing cooling forming, further cool off through the path again, obtain the tow of cooling forming, the temperature of the side-blown in this step is that the temperature of wind is 22.5 ℃, and humidity is 78%RH;
E) oil and pre-network, by oily lip to by step D) tow of the cooling forming that obtains oils and pre-network, obtain the tow of drawing-off, network described here is that industry is known: under the effect of high velocity air, multifilament is dispelled be divided into several strands to tangle mutually and form the network joint, with a kind of air-texturing technology of the coherent that increases tow, the stream pressure of the network in this step is 0.15MPa;
F) drafting forming, will be by step e) obtain treat that the drawing-off tow is through feeding and successively through first, second and the 3rd group of hot-rolling carries out drawing-off, and draw through the 3rd group of hot-rolling at tow and to carry out HEAT SETTING when arriving at the 4th group of hot-rolling, specifically: the feeding roller is the normal temperature roller, feeding speed is controlled to be 950m/min, the temperature degree of first group of hot-rolling is controlled to be 108 ℃, linear velocity is controlled to be 980m/min, the temperature of second group of hot-rolling is controlled to be 135 ℃, the linear velocity of second group of hot-rolling is controlled to be 3000m/min, the temperature of the 3rd group of hot-rolling is controlled to be 205 ℃, the linear velocity of the 3rd group of hot-rolling is controlled to be 4200m/min, the temperature control of the 4th group of hot-rolling is made as 205 ℃, the linear velocity of the 4th group of hot-rolling is 4100m/min, wherein: the linear velocity of first group of hot-rolling is than the fast 30m/min of linear velocity of feeding roller, use and embody lax formula typing, first group of hot-rolling and the drafting multiple that feeds between the roller are 1.0315 times, second, drafting multiple between first group of hot-rolling is 3.0612 times, the 3rd, drafting multiple between second group of hot-rolling is 1.4 times, and the 4th, drafting multiple between the 3rd group of hot-rolling is 0.976 times, the tow formula that relaxes when the 3rd hot-rolling and the 4th group of hot-rolling is finalized the design, that is to say the 3rd, the 4th group of hot-rolling is essentially setting roll, obtains the drafting forming silk through this step;
G) network and reoiling again, to by step F) the drafting forming silk that obtains carries out network again and reoils and package, and wherein, the stream pressure of network is controlled to be 0.35MPa again, winding speed during package is controlled to be 4000m/min, obtains continuous synthetic fibre 6 fine denier filaments of high intensity low shrinkage.
Embodiment 3:
A) get the raw materials ready, in the feed bin of chinlon 6 section adding, obtain treating melting charge by nitrogen protection gas;
B) melting charge for the treatment of that fusion: will be by steps A) obtains is introduced fusion in the screw extruder with electric heating function, and the melt temperature of screw extruder is 278 ℃, obtains melt (promptly obtaining spinning melt);
C) moulding, will be by B) melt that obtains is that the melt pipe of 275 ℃ biphenyl steam insulation is introduced from manifold top through adopting temperature, same employing temperature is 275 ℃ a biphenyl steam insulation on the manifold, the melt that is incorporated in the manifold quantitatively is pressed into filament spinning component and by being to spray in the spinneret orifice of circle of 0.25mm by the aperture on the spinnerets, obtains tow through measuring pump;
D) cooling will be by step C) tow that obtains introduces slow cooling district's slow cooling, then by (by way of) lateral blowing the time by the lateral blowing cooling forming, further cool off through the path again, obtain the tow of cooling forming, the temperature of the side-blown in this step is that the temperature of wind is 20 ℃, and humidity is 85%RH;
E) oil and pre-network, by oily lip to by step D) tow of the cooling forming that obtains oils and pre-network, obtain the tow of drawing-off, network described here is that industry is known: under the effect of high velocity air, multifilament is dispelled be divided into several strands to tangle mutually and form the network joint, with a kind of air-texturing technology of the coherent that increases tow, the stream pressure of the network in this step is 0.20MPa;
F) drafting forming, will be by step e) obtain treat that the drawing-off tow is through feeding and successively through first, second and the 3rd group of hot-rolling carries out drawing-off, and draw through the 3rd group of hot-rolling at tow and to carry out HEAT SETTING when arriving at the 4th group of hot-rolling, specifically: the feeding roller is the normal temperature roller, feeding speed is controlled to be 762m/min, the temperature degree of first group of hot-rolling is controlled to be 100 ℃, linear velocity is controlled to be 800m/min, the temperature of second group of hot-rolling is controlled to be 130 ℃, the linear velocity of second group of hot-rolling is controlled to be 2800m/min, the temperature of the 3rd group of hot-rolling is controlled to be 215 ℃, the linear velocity of the 3rd group of hot-rolling is controlled to be 3650m/min, the temperature control of the 4th group of hot-rolling is made as 215 ℃, the linear velocity of the 4th group of hot-rolling is 3580m/min, wherein: the linear velocity of first group of hot-rolling is than the fast 22m/min of linear velocity of feeding roller, use and embody lax formula typing, first group of hot-rolling and the drafting multiple that feeds between the roller are 1.05 times, second, drafting multiple between first group of hot-rolling is 3.5 times, the 3rd, drafting multiple between second group of hot-rolling is 1.278 times, and the 4th, drafting multiple between the 3rd group of hot-rolling is 0.98 times, tow when the 3rd hot-rolling and the 4th group of hot-rolling, finalize the design (lax formula typing), that is to say the 3rd, the 4th group of hot-rolling is essentially setting roll, obtains the drafting forming silk through this step;
G) network and reoiling again, to by step F) the drafting forming silk that obtains carries out network again and reoils and package, and wherein, the stream pressure of network is controlled to be 0.4MPa again, winding speed during package is controlled to be 3500m/min, obtains continuous synthetic fibre 6 fine denier filaments of high intensity low shrinkage.
Compared with the prior art present embodiment has following significant difference:
1, secondary drawing-off utilizes the ratio of the speed of the 3rd group of hot-rolling, second group of hot-rolling, first group of hot-rolling, carries out two utmost points
Drawing-off, more known and be known as the advanced one-level drawing-off that single step spining adopted substantial difference is arranged;
2, drafting multiple height, drawing-off general times have reached 4.7 times, with respect to the drafting multiple 1.3-2.5 of single step spining
Significant raising has been arranged;
3, twice typing carry out twice i.e. typing for the second time by the 3rd group of hot-rolling and the 4th group of hot-rolling, and single step spining has only
Once typing;
4, setting temperature height, the temperature of the 3rd, the 4th group of hot-rolling is 190-215 ℃, and the single step spining setting temperature is
160-180℃；
5, the 3rd group of hot-rolling speed is greater than the speed of the 4th group of hot-rolling, embodying lax formula typing, thereby can overcome the prejudice in the prior art so as not to the typing effect of excellence;
6, employing oils for twice, and the effect of oiling for the first time is an elimination static, increase is lubricated and reduce friction, tow is operated steadily be convenient to spinning operation, help high drafting, oiling for the second time increases the coherent of finished silk, guarantees the quality of silk, is convenient to the processing of later process;
The ultimate strength of the product that 7, obtains is high and xeothermic contraction is little, after tested, the fracture strength of resulting high-strength low contraction polyamide fibre 6 fine denier filaments of embodiment 1-3 all 〉=6.6CN/dtex, xeothermic contraction are all≤3.9%, and the A level product ultimate strength of single step spining FDY is 6.0N/dtex, xeothermic contraction mean value 〉=8%, and product can satisfy the demand of different purposes.Ultimate strength is the method test of fracture strength according to international " synthetic fiber filament and textured filament ultimate strength and ultimate strength and extension at break test " GB/T14344-2008 regulation, and xeothermic contraction is according to the method test of international " synthetic fiber filament percent thermal shrinkage test method " GB/T6505-2008 regulation.
Claims (10)
1. the processing method of high-strength low contraction polyamide fibre 6 fine denier filaments is characterized in that may further comprise the steps:
A) get the raw materials ready, chinlon 6 section joins in the feed bin of nitrogen protection gas, obtains treating melting charge;
B) fusion will treat that melting charge introduces fusion in the screw extruder with electric heating function, and the melt temperature of control screw extruder obtains melt;
C) moulding is introduced melt through the measuring pump metering to be pressed into filament spinning component and by the spray silk from manifold top through melt pipe
The spinneret orifice ejection of plate obtains tow;
D) cooling is introduced the slow cooling of slow cooling district with tow, by side-blown reveal blowing cooling forming, further cools off through the path more then, obtains the tow of cooling forming;
E) oil and pre-network, oil and pre-network, control the stream pressure of pre-network, obtain treating the drawing-off tow by oily lip or oil tanker tow to cooling forming;
F) drawing-off will treat that the drawing-off tow by the feeding of feeding roller, carries out through first, second group hot-rolling and the 3rd group of hot-rolling successively
Drawing-off, and in the tow formula typing that relaxes during by way of the 3rd group of hot-rolling and the 4th group of hot-rolling, the temperature of hot-rolling is respectively organized in control drafting multiple and control, obtains the drafting forming silk;
G) network and reoiling again, the counter extensioin fixed wire carries out network again and reoils and package, controls the stream pressure and the control winding speed of network again, obtains high-strength low contraction polyamide fibre 6 fine denier filaments.
2. the processing method of high-strength low contraction polyamide fibre 6 fine denier filaments according to claim 1 is characterized in that step B) described in control screw extruder melt temperature be that melt temperature is controlled to be 220-280 ℃.
3. the processing method of high-strength low contraction polyamide fibre 6 fine denier filaments according to claim 1 is characterized in that step C) described in melt pipe and manifold top by the circulation the biphenyl steam insulation, the temperature of described biphenyl steam insulation is 255-285 ℃.
4. the processing method of high-strength low contraction polyamide fibre 6 fine denier filaments according to claim 1 is characterized in that step C) described in spinneret orifice be circular port or irregularly-shaped hole.
5. the processing method of high-strength low contraction polyamide fibre 6 fine denier filaments according to claim 4 is characterized in that when described spinneret orifice is circular port the aperture is 0.25-0.35mm.
6. the processing method of high-strength low contraction polyamide fibre 6 fine denier filaments according to claim 1 is characterized in that step D) described in the temperature of lateral blowing be 18-25 ℃, humidity is 70-85%RH.
7. the processing method of high-strength low contraction polyamide fibre 6 fine denier filaments according to claim 1 is characterized in that step e) described in the stream pressure of the pre-network of control be that stream pressure is controlled to be 0.08-0.2MPa.
8. the processing method of high-strength low contraction polyamide fibre 6 fine denier filaments according to claim 1, it is characterized in that step F) in described control drafting multiple be: first group of hot-rolling is controlled to be 1.01-1.1 doubly with the drafting multiple of feeding roller, the drafting multiple of second group of hot-rolling and first group of hot-rolling is controlled to be 2.5-4.0 doubly, the drafting multiple of the 3rd group of hot-rolling and second group of hot-rolling is controlled to be 1.2-2.0 doubly, the drafting multiple of the 4th group of hot-rolling and the 3rd group of hot-rolling is controlled to be 0.98-0.9 doubly, and described lax formula typing is with the speed of the 3rd group of hot-rolling speed greater than the 4th group of hot-rolling.
9. the processing method of high-strength low contraction polyamide fibre 6 fine denier filaments according to claim 1, it is characterized in that step F) described in the control temperature of respectively organizing hot-rolling be: first group of heat roller temperature is controlled at 70-110 ℃, second group of heat roller temperature is controlled at 100-150 ℃, the 3rd group and the 4th group of heat roller temperature are controlled at 190-215 ℃, wherein, described feeding roller is a normal temperature.
10. the processing method of high-strength low contraction polyamide fibre 6 fine denier filaments according to claim 1, it is characterized in that step G) described in control again the stream pressure of network be 0.15-0.4MPa, described control winding speed is that winding speed is controlled at 3500-4500m/min.
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| CN105908275A (en) * | 2016-06-29 | 2016-08-31 | 浙江尤夫高新纤维股份有限公司 | Method for producing fine-denier and low-shrinkage polyester industrial fiber by using fine-denier and high-strength spinning equipment |
| CN107574495A (en) * | 2017-10-18 | 2018-01-12 | 海安县中山合成纤维有限公司 | A kind of production method of low-titer chinlon 6 filament |
| CN108130614A (en) * | 2017-12-14 | 2018-06-08 | 江苏恒力化纤股份有限公司 | A kind of polyester HOY fibers and preparation method thereof |
| CN106367817B (en) * | 2016-11-29 | 2018-09-07 | 中维化纤股份有限公司 | A kind of preparation method of 66 industrial yarn of lower shrinkage polyamide fibre |
| CN111020729A (en) * | 2019-11-26 | 2020-04-17 | 浙江及时宇特种纤维科技有限公司 | Low-melting-point chinlon hot melt yarn preparation equipment and process |
| WO2021031094A1 (en) * | 2019-08-20 | 2021-02-25 | 南通市苏中纺织有限公司 | Functional nylon fdy fiber and production process therefor |
| CN112410899A (en) * | 2020-11-05 | 2021-02-26 | 广东新会美达锦纶股份有限公司 | Manufacturing process of high-strength structural polyamide 6 |
| CN112921419A (en) * | 2021-01-19 | 2021-06-08 | 长乐力恒锦纶科技有限公司 | Production method and equipment of ultra-high strength chinlon 6 semi-dull filament |
| CN113502549A (en) * | 2021-05-28 | 2021-10-15 | 中国石油化工股份有限公司 | Melt-blown spinning assembly |
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| CN111020729B (en) * | 2019-11-26 | 2021-02-05 | 浙江及时宇特种纤维科技有限公司 | Low-melting-point chinlon hot melt yarn preparation equipment and process |
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Application publication date: 20110914 |