CN103696034B - The production method of a kind of full-dull thin dawn or super fine denier nylon 6FDY long filament - Google Patents
The production method of a kind of full-dull thin dawn or super fine denier nylon 6FDY long filament Download PDFInfo
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- CN103696034B CN103696034B CN201310425048.2A CN201310425048A CN103696034B CN 103696034 B CN103696034 B CN 103696034B CN 201310425048 A CN201310425048 A CN 201310425048A CN 103696034 B CN103696034 B CN 103696034B
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Abstract
The present invention relates to nylon fiber processing technique field, adding a certain amount of TiO for solving in full-dull nylon 6 slice
2after, easily produce gel in process of production, break end when producing full-dull fiber many, more cannot obtain the problem that filament number is less than the fine count fiber of 1.0dtex, the present invention proposes the production method of a kind of full-dull thin dawn or super fine denier nylon 6FDY long filament, by full-dull nylon 6 slice and full-dull fine denier nylon 6 master batch after drying after screw extruder blended melting, send into spinning manifold, through measuring pump, filament spinning component, ring is dried, oil nozzle oils, blow network and the first draw-off godet, second spinning reel is guided, be wound into the spinning cake of a kind of full-dull thin dawn or super fine denier nylon 6FDY long filament, the invention solves the problem that full-dull thin dawn or super fine denier nylon 6FDY long filament easily break end in process of production, and produced filament number and be less than 1.0dtex full-dull fine denier nylon 6FDY long filament.
Description
Technical field
The present invention relates to nylon fiber processing technique field, particularly the production method of a kind of full-dull thin dawn 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 characteristic as good springiness, intensity is high, wear-resisting, durable, proportion is little, resistance to mould, moth-resistant etc., be thus subject to the welcome of consumers in general.Along with the extensive expansion of 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 enterprise's competitiveness commercially.
The dullness of nylon 6 slice is with TiO
2degree come fixed, TiO
2content belong to half delustring, TiO when being 0.3-0.5%
2content be 0.5-1.5% be delustring, be full-dull when content is 1.5-3%, have greatly the cloth of light or the processing of half delustring silk to have aurora owing to adopting, and the fabric gloss adopting full-dull silk to process is soft, closer to natural effects, so the more aobvious noble quality of the fabric of full-dull, be subject to the favor of consumer.Find according to market survey, full-dull nylon fiber long filament has had current demand at home.With full-dull long filament exploitation full-dull fabric, soft, gloss is soft, bright in luster, the pendency of fabric is felt, and is widely used at high-grade men and women's clothes and bunting field.But owing to adding a certain amount of TiO in full-dull nylon 6 slice
2, easily produce gel in process of production, thus make it higher to manufacturing requirements, break end when producing full-dull fiber with traditional handicraft at present many, more cannot obtain the fine count fiber that filament number is less than 1.0dtex.
Application number: the Chinese patent of 201210483226.2 discloses the manufacture method of light network polyamide fibre 6DTY of a kind of full-dull thin dawn, this disclosure of the invention manufacture method of light network polyamide fibre 6DTY of a kind of full-dull thin dawn, comprises 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.But the filament number of this invention, also all at about 1.6dtex, can not obtain the fine count fiber that filament number is less than 1.0dtex.
Summary of the invention
A certain amount of TiO is added for solving in full-dull nylon 6 slice
2after, easily produce gel in process of production, break end when producing full-dull fiber many, more cannot obtain the problem that filament number is less than the fine count fiber of 1.0dtex, the present invention proposes the production method of a kind of full-dull thin dawn or super fine denier nylon 6FDY long filament, solve the problem that full-dull thin dawn or super fine denier nylon 6FDY long filament easily break 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 a kind of full-dull thin dawn or super fine denier nylon 6FDY long filament, by full-dull nylon 6 slice and full-dull fine denier nylon 6 master batch after drying after screw extruder blended melting, send into spinning manifold, through measuring pump, filament spinning component, ring is dried, oil nozzle oils, blow network and the first draw-off godet, second spinning reel is guided, be wound into the spinning cake of a kind of full-dull thin dawn 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 batch is 9 ~ 99:1.The melt structure of the present invention by adopting the mode of adding master batch to change nylon 6 molecule, strengthens melt viscosity, realizes the thin dawn spinning of nylon 6 fiber.
Described full-dull fine denier nylon 6 master batch 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 batch is less than 1000ppm.The metal of the second main group comprises beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), radium (Ra) six kinds of metallic elements, 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 batch, the second main group metal compound 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 products, 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 in each district of screw rod is located between 240 ~ 280 DEG C; Spinning body temperature is 240 ~ 290 DEG C; First draw-off godet temperature is 60 ~ 90 DEG C, and second spinning reel heating-up temperature is 80-160 DEG C, and as preferably, second spinning reel heating-up temperature is 110-140 DEG C.
As preferably, in spinning manifold, pressure keeps 13 ~ 18Mpa, pressure divergence is below ± 3%, 40 ~ 100 object metal sand 60g ~ 200g are adopted to filter spinning melt in filament spinning component, 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 DEG C.
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 achieves the production of full-dull fine denier nylon 6FDY long filament by the method changing nylon chips melt strength of adding fine denier nylon 6 master batch in spinning process, the thin dawn or the super fine denier nylon 6FDY long filament that adopt this master batch additive process on existing high-speed spinning equipment, also can produce filament number to be less than 1.0dtex.
Compared with prior art, the invention has the beneficial effects as follows:
(1) solve the problem that full-dull thin dawn or super fine denier nylon 6FDY long filament easily break 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, carry out spinning full-dull fine denier nylon 6FDY long filament, spinnability is greatly improved, and production process is smooth.
Detailed description of the invention
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
Prepared by full-dull fine denier nylon master batch: by 5 parts, the second main group metal compound calcium chloride, full-dull nylon 6 slice 95 parts, antioxidant 1010 and antioxidant 163(account for 0.3% of full-dull nylon 6 slice weight), polyethylene glycol (accounting for 0.3% of full-dull nylon 6 slice weight) by melt blending, extrude, cooling granulation makes full-dull fine denier nylon 6 master batch 1.
Prepared by full-dull fine denier nylon FDY filament: the full-dull nylon 6 slice 90 parts (moisture content is less than 600ppm) of 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 oils, blow network and the first draw-off godet, second spinning reel guiding, is wound into the spinning cake 1 of a kind of full-dull thin dawn 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 DEG C, 262 DEG C, 266 DEG C, 270 DEG C, 275 DEG C, spinning body temperature is 280 DEG C, head pressure is 15 ± 0.3Mpa, 80 ~ 100 object metal sand 115g and 60 ~ 80 object metal sand 65g are adopted to filter spinning melt in filament spinning component, the aperture of spinnerets is 0.18mm, draw ratio is 2, ring blowing wind speed is 0.28m/s, temperature is 25 DEG C, humidity is 70%, oil concentration is 10%, first draw-off godet temperature is 60 DEG C, second spinning reel temperature is 110 DEG C, the positional distance spinnerets 600mm of boundling point, spinning speed is 3800m/min.
The filament number of the full-dull obtained under the said equipment parameter and process conditions thin dawn 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
Prepared by full-dull fine denier nylon master batch: by the second main group metal compound calcium acetate 8 parts, full-dull nylon 6 slice 94 parts, antioxidant B225(accounts for 0.5% of full-dull nylon 6 slice weight), atoleine and PLA (respectively accounting for 0.5% of full-dull nylon 6 slice weight) by melt blending, extrude, cooling granulation makes full-dull fine denier nylon 6 master batch 2.
Full-dull thin dawn or the preparation of super fine denier nylon FDY filament: the full-dull nylon 6 slice 96 parts (moisture content is less than 600ppm) of super-dry of learning from else's experience, through the full-dull fine denier nylon master batch 2 (moisture content is less than 1000ppm) 4 parts of super-dry, through screw extruder blended melting, send into spinning manifold, through measuring pump, filament spinning component, ring blowing, oil nozzle oils, blow network and the first draw-off godet, second spinning reel guiding, is wound into the spinning cake 2 of a kind of full-dull thin dawn 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 DEG C, 260 DEG C, 263 DEG C, 268 DEG C, 272 DEG C, spinning body temperature is 275 DEG C, head pressure is 14 ± 0.3Mpa, 80 ~ 100 object metal sand 110g and 60 ~ 80 object metal sand 70g are adopted to filter spinning melt in filament spinning component, the aperture of spinnerets is 0.20mm, draw ratio is 2.5, ring blowing wind speed is 0.30m/s, temperature is 30 DEG C, humidity is 80%, oil concentration is 12.5%, , first draw-off godet temperature is 75 DEG C, second spinning reel temperature is 120 DEG C, the positional distance spinnerets 700mm of boundling point, spinning speed is 4000m/min.
The filament number obtaining full-dull thin dawn 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
Prepared by full-dull fine denier nylon master batch: by 10 parts, the second main group metal compound magnesium sulfate, full-dull nylon 6 slice 94 parts, antioxidant 626(accounts for 1% of full-dull nylon 6 slice weight), polyvinyl alcohol (accounting for 1% of full-dull nylon 6 slice weight) by melt blending, extrude, cooling granulation makes full-dull fine denier nylon 6 master batch 3.
Full-dull thin dawn or the preparation of super fine denier nylon FDY filament: the full-dull nylon 6 slice 97 parts (moisture content is less than 600ppm) of super-dry of learning from else's experience, through thin dawn full-dull nylon master batch 3 (moisture content is less than 1000ppm) 3 parts of super-dry, through screw extruder blended melting, send into spinning manifold, through measuring pump, filament spinning component, ring blowing, oil nozzle oils, blow network and the first draw-off godet, second spinning reel guiding, is wound into the spinning cake 3 of a kind of full-dull thin dawn or super fine denier nylon 6FDY long filament.Wherein the temperature in each district of screw rod is respectively 245 DEG C, 250 DEG C, 263 DEG C, 265 DEG C, 272 DEG C, spinning body temperature is 273 DEG C, head pressure is 13 ± 0.3Mpa, 80 ~ 100 object metal sands and 100g60 ~ 80 object metal sand 80g is adopted to filter spinning melt in filament spinning component, the aperture of spinnerets is 0.22mm, draw ratio is 3, ring blowing wind speed is 0.33m/s, temperature is 35 DEG C, humidity is 90%, oil concentration is 15%, first draw-off godet temperature is 90 DEG C, second spinning reel temperature is 130 DEG C, the positional distance spinnerets 800mm of boundling point, spinning speed is 4500m/min.
The filament number of the full-dull obtained under the said equipment parameter and process conditions thin dawn 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 (5)
1. the production method of a full-dull thin dawn 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 batch after drying after screw extruder blended melting, send into spinning manifold, through measuring pump, filament spinning component, ring is dried, oil nozzle oils, blow network and the first draw-off godet, second spinning reel is guided, be wound into the spinning cake of a kind of full-dull thin dawn 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 batch is 9 ~ 99:1
Described full-dull fine denier nylon 6 master batch 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 batch is less than 1000ppm, and described auxiliary agent is selected from one or more in atoleine, n-hexane, cyclohexane, polyethylene glycol, PLA, polyvinyl alcohol;
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 DEG C, and oil concentration is 10 ~ 15%, and oil applying rate is 1.0 ~ 2.5%,
In spinning manifold, pressure keeps 13 ~ 18Mpa, 40 ~ 100 object metal sand 60g ~ 200g are adopted to filter spinning melt in filament spinning component, in filament spinning component, the aperture of spinnerets is 0.15 ~ 0.30mm, and draw ratio is 2 ~ 4, the positional distance spinnerets 600 ~ 1000mm of boundling point.
2. the production method of a kind of full-dull thin dawn according to claim 1 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.
3. the production method of a kind of full-dull thin dawn according to claim 2 or super fine denier nylon 6FDY long filament, is characterized in that, in full-dull fine denier nylon 6 master batch, the second main group metal compound 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.
4. the production method of a kind of full-dull thin dawn according to claim 1 or super fine denier nylon 6FDY long filament, is characterized in that, in blended melting process, the temperature in each district of screw rod is located between 240 ~ 280 DEG C; Spinning body temperature is 240 ~ 290 DEG C; First draw-off godet temperature is 60 ~ 90 DEG C, and second spinning reel heating-up temperature is 80 ~ 160 DEG C.
5. the production method of a kind of full-dull thin dawn 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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| CN104032404B (en) * | 2014-06-20 | 2016-03-16 | 福建锦江科技有限公司 | A kind of preparation method of half matt nylon 6 long filament |
| 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 |
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| 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 |
| CN110983527B (en) * | 2019-12-29 | 2021-06-25 | 江苏恒力化纤股份有限公司 | Nylon 6 composite fiber and preparation method thereof |
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