CN103696034A - Production method of full-dull fine denier or ultrafine denier nylon 6 FDY filaments - Google Patents
Production method of full-dull fine denier or ultrafine denier nylon 6 FDY filaments Download PDFInfo
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- CN103696034A CN103696034A CN201310425048.2A CN201310425048A CN103696034A CN 103696034 A CN103696034 A CN 103696034A CN 201310425048 A CN201310425048 A CN 201310425048A CN 103696034 A CN103696034 A CN 103696034A
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Abstract
The invention relates to the technical field of nylon fiber processing, and solves the problems that full-dull nylon 6 slices are added with a certain amount of TiO2, gel is easy to form during production, full-dull fibers have a lot of broken ends during production, and fine denier fibers with a filament number being less than 1.0 dtex cannot be produced. The invention provides a production method of full-dull fine denier or ultrafine denier nylon 6 FDY filaments, which comprises the following steps: drying full-dull nylon 6 slices and full-dull fine denier nylon 6 master batch, performing blending fusion by a screw extruder, sending into a spinning case, weighing by a metering pump, spinning by a spinning assembly, blowing by a ring blower, applying oil by an oil nozzle, blowing network, guiding by a first spinning reel and a second spinning reel, and winding to form a spinning cake of full-dull fine denier or ultrafine denier nylon 6 FDY filaments. The method of the invention solves the problem that full-dull fine denier or ultrafine denier nylon 6 FDY filaments are easy to generate broken ends during production, and produces full-dull fine denier nylon 6 FDY filaments with a filament number being less than 1.0 dtex.
Description
Technical field
The present invention relates to nylon fiber processing technique field, particularly the production method of thin dawn of a kind of full-dull or super fine denier nylon 6FDY long filament.
Background technology
Nylon fiber is industrialized synthetic fiber kind the earliest, it have a lot of good characteristics as good springiness, intensity is high, wear-resisting, durable, proportion is little, resistance to mould, moth-resistant etc., thereby be subject to consumers in general's welcome.Extensive expansion along with domestic and international nylon fiber production capacity, nylon fiber long filament market competition is day by day fierce, product profit space is more and more less, manufacturing enterprise only has the bold breakthrough and innovation by production technology, Development and Production goes out high technology content, high value-added product, just can increase the benefit, strengthen the competitiveness of enterprise on market.
The dullness of nylon 6 slice is with TiO
2degree come fixed, TiO
2content belong to half delustring, TiO while being 0.3-0.5%
2content be that 0.5-1.5% is delustring, when content is 1.5-3%, be full-dull, owing to adopting, have greatly the cloth of light or the processing of half delustring silk to have aurora, and adopt the fabric gloss of full-dull silk processing soft, more approach natural effects, so the more aobvious noble quality of the fabric of full-dull is subject to consumer's favor.According to market survey, find, full-dull nylon fiber long filament has had current demand at home.With the full-dull fabric of full-dull long filament exploitation, soft, gloss is soft, bright in luster, dangling of fabric felt, and at high-grade men and women's clothes and bunting field, is widely used.But owing to having added a certain amount of TiO in full-dull nylon 6 slice
2, easily producing in process of production gel, thereby make it higher to manufacturing requirements, while producing full-dull fiber with traditional handicraft at present, broken end is many, more cannot make the fine count fiber that filament number is less than 1.0dtex.
Application number: 201210483226.2 Chinese patent discloses the manufacture method of light network polyamide fibre 6DTY of thin dawn of a kind of full-dull, this disclosure of the invention the manufacture method of light network polyamide fibre 6DTY of thin dawn of a kind of full-dull, comprise the following steps: a) melting high-speed spinning; B) lateral blowing is cooling; C) oil, boundling; D) reel; E) seal wire heating; F) cooling false twisting; G) drawing-off, finally obtains light network polyamide fibre 6DTY of thin dawn of full-dull.But the filament number of this invention also, all in 1.6dtex left and right, can not obtain the fine count fiber that filament number is less than 1.0dtex.
Summary of the invention
For solving in full-dull nylon 6 slice, added a certain amount of TiO
2after, easily produce in process of production gel, while producing full-dull fiber, broken end is many, more cannot make the problem that filament number is less than the fine count fiber of 1.0dtex, the present invention proposes the production method of thin dawn of a kind of full-dull or super fine denier nylon 6FDY long filament, solved thin dawn of full-dull or the super fine denier nylon 6FDY long filament easy problem of broken end in process of production, and produced filament number and be less than 1.0dtex full-dull fine denier nylon 6FDY long filament.
The present invention is achieved by the following technical solutions: the production method of thin dawn of a kind of full-dull or super fine denier nylon 6FDY long filament, by full-dull nylon 6 slice and full-dull fine denier nylon 6 master batches after drying after screw extruder blended melting, send into spinning manifold, through measuring pump, filament spinning component, ring blowing, oil nozzle, oil, blow network and the first draw-off godet, second spinning reel guiding, the spinning cake that is wound into thin dawn of a kind of full-dull or super fine denier nylon 6FDY long filament, wherein the mass ratio of full-dull nylon 6 slice and full-dull fine denier nylon 6 master batches is 9～99:1.The mode that the present invention adds master batch by employing changes the melt structure of nylon 6 molecules, strengthens melt viscosity, realizes the thin dawn spinning of nylon 6 fiber.
Described full-dull fine denier nylon 6 master batches by the second main group metal compound and full-dull nylon 6 slice, antioxidant, auxiliary agent by melt blending, extrude, cooling granulation makes, the moisture content of full-dull fine denier nylon 6 master batches is less than 1000ppm.The metal of the second main group comprises beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), six kinds of metallic elements of radium (Ra), the similar alkali metal of element character of the second main group.As preferably, adopt crawler type cooling granulation.
As preferably, the inherent viscosity of described full-dull nylon 6 slice is 2.40～2.60, and moisture content is less than 600ppm.
In full-dull fine denier nylon 6 master batches, the second main group metal compounds content is 1%～10% of full-dull nylon 6 slice weight; Antioxidant is 0.01%～1% of full-dull nylon 6 slice weight; Auxiliary agent content is 0.01%～1% of full-dull nylon 6 slice weight.
Described antioxidant is commercial product, is selected from one or more in antioxidant 1010, antioxidant 626, antioxidant 168, antioxidant B225, antioxidant B900, antioxidant 3114, antioxidant 163, antioxidant CA, antioxidant DLTP, antioxidant TNP;
Described auxiliary agent is selected from one or more in atoleine, n-hexane, cyclohexane, polyethylene glycol, PLA, polyvinyl alcohol.
As preferably, in blended melting process, the temperature setting in each district of screw rod is between 240～280 ℃; Spinning body temperature is 240～290 ℃; The first draw-off godet temperature is 60～90 ℃, and second spinning reel heating-up temperature is 80-160 ℃, and as preferably, second spinning reel heating-up temperature is 110-140 ℃.
As preferably, in spinning manifold, pressure keeps 13～18Mpa, pressure divergence is below ± 3%, in filament spinning component, adopt 40～100 object metal sand 60g ~ 200g to filter spinning melt, in filament spinning component, the aperture of spinnerets is 0.15～0.30mm, draw ratio is 2～4, the positional distance spinnerets 600～1000mm of boundling point.
As preferably, the wind speed of ring blowing is 0.2～0.6m/s, and humidity is 30%～90%, and wind-warm syndrome is at 15～35 ℃.
As preferably, oil concentration is 10～15%, and oil applying rate is 1.0～2.5%.
As preferably, spinning silk winding speed is 3000～4500m/min.
The present invention has realized the production of full-dull fine denier nylon 6FDY long filament by add the method that changes nylon chips melt strength of fine denier nylon 6 master batches in spinning process, adopt this master batch additive process on existing high-speed spinning equipment, also can produce thin dawn or super fine denier nylon 6FDY long filament that filament number is less than 1.0dtex.
Compared with prior art, the invention has the beneficial effects as follows:
(1) solved thin dawn of full-dull or the super fine denier nylon 6FDY long filament easy problem of broken end in process of production, and produced filament number and be less than 1.0dtex full-dull fine denier nylon 6FDY long filament;
(2) under process conditions of the present invention, spin full-dull fine denier nylon 6FDY long filament, spinnability is greatly improved, and production process is smooth.
The specific embodiment
Below by embodiment, the present invention is described in further detail.Raw materials used all commercially available in embodiment, wherein the inherent viscosity of full-dull nylon 6 slice is 2.40～2.60.
Embodiment 1
Full-dull fine denier nylon master batch preparation: by 5 parts, the second main group metal compound calcium chloride, 95 parts of full-dull nylon 6 slices, antioxidant 1010 and antioxidant 163(account for full-dull nylon 6 slice weight 0.3%), polyethylene glycol (account for full-dull nylon 6 slice weight 0.3%) by melt blending, extrude, cooling granulation makes full-dull fine denier nylon 6 master batches 1.
Full-dull fine denier nylon FDY filament preparation: 90 parts of the full-dull nylon 6 slices (moisture content is less than 600ppm) of the super-dry of learning from else's experience, 10 parts of full-dull fine denier nylon master batches 1 (moisture content is less than 1000ppm) through super-dry, through screw extruder blended melting, send into spinning manifold, through measuring pump, filament spinning component, ring blowing, oil nozzle, oil, blow network and the first draw-off godet, second spinning reel guiding, be wound into the spinning cake 1 of thin dawn of a kind of full-dull or super fine denier nylon 6FDY long filament.Its Processes and apparatus parameter is as follows: the temperature in each district of screw rod is respectively 255 ℃, 262 ℃, 266 ℃, 270 ℃, 275 ℃, spinning body temperature is 280 ℃, head pressure is 15 ± 0.3Mpa, in filament spinning component, adopt 80～100 object metal sand 115g and 60～80 object metal sand 65g to filter spinning melt, the aperture of spinnerets is 0.18mm, draw ratio is 2, ring blowing wind speed is 0.28m/s, temperature is 25 ℃, humidity is 70%, oil concentration is 10%, the first draw-off godet temperature is 60 ℃, second spinning reel temperature is 110 ℃, the positional distance spinnerets 600mm of boundling point, spinning speed is 3800m/min.
The filament number of the thin dawn of full-dull obtaining under the said equipment parameter and process conditions or super fine denier nylon 6FDY long filament 1 is 1.0dtex, and fracture strength is 4.30cN/dtex, and elongation at break is 45%, and yarn unevenness is 1.26%, and oil applying rate is 1.6%.
Embodiment 2
Full-dull fine denier nylon master batch preparation: by 8 parts of the second main group metal compound calcium acetates, 94 parts of full-dull nylon 6 slices, antioxidant B225(account for full-dull nylon 6 slice weight 0.5%), atoleine and PLA (respectively account for full-dull nylon 6 slice weight 0.5%) by melt blending, extrude, cooling granulation makes full-dull fine denier nylon 6 master batches 2.
Thin dawn of full-dull or the preparation of super fine denier nylon FDY filament: 96 parts of the full-dull nylon 6 slices (moisture content is less than 600ppm) of the super-dry of learning from else's experience, through 4 parts of the full-dull fine denier nylon master batches 2 (moisture content is less than 1000ppm) of super-dry, through screw extruder blended melting, send into spinning manifold, through measuring pump, filament spinning component, ring blowing, oil nozzle, oil, blow network and the first draw-off godet, second spinning reel guiding, be wound into the spinning cake 2 of thin dawn of a kind of full-dull or super fine denier nylon 6FDY long filament.Its Processes and apparatus parameter is as follows: the temperature in each district of screw rod is respectively 255 ℃, 260 ℃, 263 ℃, 268 ℃, 272 ℃, spinning body temperature is 275 ℃, head pressure is 14 ± 0.3Mpa, in filament spinning component, adopt 80～100 object metal sand 110g and 60～80 object metal sand 70g to filter spinning melt, the aperture of spinnerets is 0.20mm, draw ratio is 2.5, ring blowing wind speed is 0.30m/s, temperature is 30 ℃, humidity is 80%, oil concentration is 12.5%, , the first draw-off godet temperature is 75 ℃, second spinning reel temperature is 120 ℃, the positional distance spinnerets 700mm of boundling point, spinning speed is 4000m/min.
The filament number that obtains thin dawn of full-dull or super fine denier nylon 6FDY long filament 2 under the said equipment parameter and process conditions is 0.8dtex, and fracture strength is 4.46cN/dtex, and elongation at break is 40%, and yarn unevenness is 1.30%, and oil applying rate is 1.8%.
Embodiment 3
Full-dull fine denier nylon master batch preparation: by 10 parts, the second main group metal compound magnesium sulfate, 94 parts of full-dull nylon 6 slices, antioxidant 626(account for full-dull nylon 6 slice weight 1%), polyvinyl alcohol (account for full-dull nylon 6 slice weight 1%) by melt blending, extrude, cooling granulation makes full-dull fine denier nylon 6 master batches 3.
Thin dawn of full-dull or the preparation of super fine denier nylon FDY filament: 97 parts of the full-dull nylon 6 slices (moisture content is less than 600ppm) of the super-dry of learning from else's experience, through 3 parts of the thin dawn full-dull nylon master batches 3 (moisture content is less than 1000ppm) of super-dry, through screw extruder blended melting, send into spinning manifold, through measuring pump, filament spinning component, ring blowing, oil nozzle, oil, blow network and the first draw-off godet, second spinning reel guiding, be wound into the spinning cake 3 of thin dawn of a kind of full-dull or super fine denier nylon 6FDY long filament.Wherein the temperature in each district of screw rod is respectively 245 ℃, 250 ℃, 263 ℃, 265 ℃, 272 ℃, spinning body temperature is 273 ℃, head pressure is 13 ± 0.3Mpa, in filament spinning component, adopt 80～100 object metal sands and 100g 60～80 object metal sand 80g to filter spinning melt, the aperture of spinnerets is 0.22mm, draw ratio is 3, ring blowing wind speed is 0.33m/s, temperature is 35 ℃, humidity is 90%, oil concentration is 15%, the first draw-off godet temperature is 90 ℃, second spinning reel temperature is 130 ℃, the positional distance spinnerets 800mm of boundling point, spinning speed is 4500m/min.
The filament number of the thin dawn of full-dull obtaining under the said equipment parameter and process conditions or super fine denier nylon 6FDY long filament 3 is 0.55dtex, and fracture strength is 4.62cN/dtex, and elongation at break is 35%, and yarn unevenness is 1.47%, and oil applying rate is 2.0%.
Claims (10)
1. the production method of thin dawn of full-dull or super fine denier nylon 6FDY long filament, it is characterized in that, by full-dull nylon 6 slice and full-dull fine denier nylon 6 master batches after drying after screw extruder blended melting, send into spinning manifold, through measuring pump, filament spinning component, ring blowing, oil nozzle, oil, blow network and the first draw-off godet, second spinning reel guiding, the spinning cake that is wound into thin dawn of a kind of full-dull or super fine denier nylon 6FDY long filament, wherein the mass ratio of full-dull nylon 6 slice and full-dull fine denier nylon 6 master batches is 9～99:1.
2. the production method of thin dawn of a kind of full-dull according to claim 1 or super fine denier nylon 6FDY long filament, it is characterized in that, described full-dull fine denier nylon 6 master batches by the second main group metal compound and full-dull nylon 6 slice, antioxidant, auxiliary agent by melt blending, extrude, cooling granulation makes, the moisture content of full-dull fine denier nylon 6 master batches is less than 1000ppm.
3. the production method of thin dawn of a kind of full-dull according to claim 1 and 2 or super fine denier nylon 6FDY long filament, is characterized in that, the inherent viscosity of described full-dull nylon 6 slice is 2.40～2.60, and moisture content is less than 600ppm.
4. the production method of thin dawn of a kind of full-dull according to claim 3 or super fine denier nylon 6FDY long filament, is characterized in that, in full-dull fine denier nylon 6 master batches, the second main group metal compounds content is 1%～10% of full-dull nylon 6 slice weight; Antioxidant is 0.01%～1% of full-dull nylon 6 slice weight; Auxiliary agent content is 0.01%～1% of full-dull nylon 6 slice weight.
5. the production method of thin dawn of a kind of full-dull according to claim 4 or super fine denier nylon 6FDY long filament, is characterized in that, described auxiliary agent is selected from one or more in atoleine, n-hexane, cyclohexane, polyethylene glycol, PLA, polyvinyl alcohol.
6. the production method of thin dawn of a kind of full-dull according to claim 1 or super fine denier nylon 6FDY long filament, is characterized in that, in blended melting process, the temperature setting in each district of screw rod is between 240～280 ℃; Spinning body temperature is 240～290 ℃; The first draw-off godet temperature is 60～90 ℃, and second spinning reel heating-up temperature is 80～160 ℃.
7. the production method of thin dawn of a kind of full-dull according to claim 1 or super fine denier nylon 6FDY long filament, it is characterized in that, in spinning manifold, pressure keeps 13～18Mpa, in filament spinning component, adopt 40～100 object metal sand 60g ~ 200g to filter spinning melt, in filament spinning component, the aperture of spinnerets is 0.15～0.30mm, draw ratio is 2～4, the positional distance spinnerets 600～1000mm of boundling point.
8. the production method of thin dawn of a kind of full-dull according to claim 1 or super fine denier nylon 6FDY long filament, is characterized in that, the wind speed of ring blowing is 0.2～0.6m/s, and humidity is 30%～90%, and wind-warm syndrome is at 15～35 ℃.
9. the production method of thin dawn of a kind of full-dull according to claim 1 or super fine denier nylon 6FDY long filament, is characterized in that, oil concentration is 10～15%, and oil applying rate is 1.0～2.5%.
10. the production method of thin dawn of a kind of full-dull according to claim 1 or super fine denier nylon 6FDY long filament, is characterized in that, spinning silk winding speed is 3000～4500m/min.
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| CN106978659A (en) * | 2017-05-23 | 2017-07-25 | 浙江亚星纤维有限公司 | A kind of manufacture method of the refreshing plying network yarn of full-dull ice |
| CN107142575A (en) * | 2017-05-23 | 2017-09-08 | 浙江亚星纤维有限公司 | A kind of manufacture method without moment of torsion abnormity plying cladding wire |
| CN107435176A (en) * | 2017-05-23 | 2017-12-05 | 浙江亚星纤维有限公司 | A kind of manufacture method of full-dull heating elastic filament |
| CN110983527A (en) * | 2019-12-29 | 2020-04-10 | 江苏恒力化纤股份有限公司 | Nylon 6 composite fiber and preparation method thereof |
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