CN102021666B - Method for producing melt direct spinning superfine denier polyurethane fibers through guide yarn stretching of double godet rollers - Google Patents
Method for producing melt direct spinning superfine denier polyurethane fibers through guide yarn stretching of double godet rollers Download PDFInfo
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- CN102021666B CN102021666B CN2010105833600A CN201010583360A CN102021666B CN 102021666 B CN102021666 B CN 102021666B CN 2010105833600 A CN2010105833600 A CN 2010105833600A CN 201010583360 A CN201010583360 A CN 201010583360A CN 102021666 B CN102021666 B CN 102021666B
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Abstract
The invention provides a method for producing melt direct spinning superfine denier polyurethane fibers through guide yarn stretching of double godet rollers, which is characterized by comprising the following steps: raw materials, charging under negative pressure, addition of 0.8MPa nitrogen pressure, a double-screw extruder, filtration in a melt filter, jetted yarn cooling in an air duct, oiling by an oiling machine, guide yarn stretching by double godet rollers, curing in a drying room and detecting and casing. The method has the following advantages: the superfine denier polyurethane fibers have low bending stiffness and quite soft feel; the surface areas of the fibers are large, thus obviously improving the coverage, bulkiness and heat retention of the fabrics and having extremely strong cleaning function; the superfine fibers are made into superhigh density fabrics and the size of the gaps between the fibers range from the diameter of the water drops to the diameter of the vapor droplets, thus having waterproof and air-permeability effects; and the superfine fibers are processed into such fabrics which can be moistened by water as towels and the towels have high water absorbability and can rapidly absorb the moisture of the washed hairs to rapidly dry the hairs. The method can be applied in various fields.
Description
Technical field
What the present invention relates to is the fusion direct spinning superfine denier spandex fibre production method that a kind of two pass godet roller seal wire stretches, and belongs to the spandex fibre production technical field.
Background technology
Spandex formal name used at school < POLYUTETHANE>fiber is a kind of spandex of development in recent years, is also referred to as: Si Pandesi < SPANDEX>fiber, PTMG account for 80% (quality molecules) of final polymer, are described as people's " second skin ".It has high flexibility, can elongate 6～7 times, but can return to original state rapidly with the disappearance of tension force, and its molecular structure is picture polyurethanes chain, softness and extensibility, strengthens its characteristic through linking together with hard segment.Generally adopt both at home and abroad at present: chemical method spins, wet method is spun, dry method is spun; More than these three kinds of spinning process all can produce environmental pollution aborning; Complex process, energy consumption is big, floor space is many, investment is big, cost is high; And the elasticity spandex fibre silk of producing contains harmful material. known manufacturing thermoplasticity elastic spandex fiber, fusion slice spinning etc.; Because its producing cost of the elastomer that the fusion slice spinning obtains is high, energy resource consumption is big, and heat resistance, hot water resistance, elastic recovery etc. are all unsatisfactory.Fusion is directly spun then can overcome above shortcoming.The specification of present spandex fibre on the market has super fine denier series (more than the 5D, below the 20D) and conventional serial (more than the 20D); And because the limitation of fusion direct spinning technology; And the super fine denier spandex fibre is higher to specification requirement; The product that has only conventional series at present is so fusion direct spinning superfine denier series is a breach always.
Summary of the invention
The objective of the invention is to have only routine (more than 20 dawn) fusion directly to spin the situation of spandex fibre at present on the market; The fusion direct spinning superfine denier spandex fibre production method that proposes the stretching of two pass godet roller seal wire is produced the ultra-fine denier polyurethane spandex fibre silk of 10.6D-15.5D; Its spandex fibre is soft, comfortable more, is suitable for using.
Technical solution of the present invention: it is characterized in that comprising following processing step,
One, the weight ratio of raw material components, PEPA account for that 62-75%, isocyanates account for 20-30%, butanediol accounts for 5-8%;
Two, negative pressure feeding is evacuated to and bears 0.8MPa pressure, and the polyester polyols raw polyol is added in the first purification jar through the first reinforced valve that is arranged on the first purification jar, temperature 103-105 ℃, heats and purifies in 41-45 minute; The raw material butanediol adds in the second purification jar through the second reinforced valve that is arranged on the second purification jar, temperature 106-108 ℃, heats and purifies in 45-54 minute; Isocyanates adds in the 3rd purification jar through the 3rd reinforced valve that is arranged on the 3rd purification jar, temperature 110-112 ℃, heats and purifies in 50-55 minute;
Three, add the 0.8MPa nitrogen pressure; Raw material in the first purification jar is transported to agitated reactor hybrid reaction through second metering conveying pump, the 3rd purification jar interior raw material through the 3rd metering delivery pump through first metering conveying pump, second purification jar interior raw material; The hybrid reaction time is 45-48 minute; Temperature in the agitated reactor is heated to 205-208 ℃; Raw material through at the agitated reactor internal reaction is transported to double screw extruder through the 4th metering conveying pump, and the temperature 215-218 in the double screw extruder ℃, incorporation time 2-3 minute;
Four, double screw extruder is extruded in the fondant filter and filters, 218 ℃ of the temperature in the fondant filter, 1 minute time;
Five, to manifold, in the manifold temperature 216.4-217.2 ℃ gets into manifold assembly filter screen spinnerets, the ejection strand to the material that filters through fondant filter then through the 5th metering conveying pump, the 6th metering conveying pump; Filter screen spinnerets footpath 22-26 silk, filter screen density 280-260 order;
Six, the ejection strand is through air channel cooling, wind-warm syndrome 28.4-29.2, wind speed 0.27-0.31 (M/S); Rheumatism 57-61 ℃;
Seven, the air channel cooling is after the device that oils oils, and the godet roller seal wire stretches afterwards, the first godet roller speed 665-685M/Min; The second godet roller speed 615-655M/Min gets into up-coiler coiling and molding, up-coiler winding speed 625-645M/Min after the godet roller seal wire stretches; The silk back gets into the drying room slaking 10.6-15.5 dawn high-elastic mould spandex fibre silk falls; The temperature 42-52 of slaking ℃, curing time 20-24 hour, detect vanning after the slaking.
Advantage of the present invention: the present invention has inherited the advantage of the spandex production of the straight spinning fire resistant special type elastic of fusion, and stability, heat resistance, hot water resistance, elastic recovery, percentage elongation and uniformity all improve a lot.On this basis, it has had some advantages of superfine fibre equally, and the super fine denier spandex fibre is because diameter is very little, so its bending stiffness is very little, the handle of fibre particularly soft; Fiber surface area is very big; Therefore spreadability, bulkiness and the warmth retention property of its fabric are significantly improved, and the number of times that the big fiber of specific area contacts with dust or greasy dirt is more, and greasy dirt; More from the chance of slit infiltration between fiber surface, therefore have extremely strong cleaning function; Superfine fibre is processed the close fabric of superelevation, and interfibrous space is between drop diameter and water vapour diameter of droplets, and therefore ultra-fine fabric has the water-proof air-permeable effect; Superfine fibre has many fine holes between microfiber, form the capillary structure, can then be had high-hydroscopicity by the towel kind fabric of water-wet if be processed into, and this towel of the Hair grooming of washing can sop up moisture content very soon, and hair is done soon.Because their good characteristic is widely used in various fields.
Description of drawings
Accompanying drawing 1 is the structural representation of the fusion direct spinning superfine denier spandex fibre production equipment of two pass godet roller seal wire stretching.
The specific embodiment
Contrast accompanying drawing 1; Its structure is that first jar of purifying is provided with the first reinforced valve, second jar of purifying and is provided with the second reinforced valve, the 3rd jar of purifying and is provided with the 3rd reinforced valve; Wherein the efferent duct of the first purification jar connects the input pipe of first retort; The efferent duct of the second purification jar connects the input pipe of second retort; The efferent duct of the 3rd purification jar connects the input pipe of the 3rd retort; The efferent duct of first retort joins through heat first input pipe of blender of first metering conveying pump and agitated reactor, and the efferent duct of second retort joins through heat second input pipe of blender of second metering conveying pump and agitated reactor, and the efferent duct of the 3rd retort joins through heat the 3rd input pipe of blender of the 3rd metering delivery pump and agitated reactor; The heat input pipe of efferent duct through the 4th metering conveying pump and double screw extruder of blender of agitated reactor joins, and the efferent duct of double screw extruder is connected in series with the input pipe of fondant filter; The input pipe of the efferent duct of fondant filter and the 5th metering conveying pump joins; Additive tank is provided with nitrogen valve, and the efferent duct of additive tank joins through the efferent duct of the 5th metering conveying pump and the input pipe of the 6th metering conveying pump; The efferent duct of the input pipe of manifold and the 6th metering conveying pump joins; The efferent duct of manifold and assembly filter screen spinnerets join; The assembly filter screen spinnerets cooling system of giving a dinner for a visitor from afar, the air channel cooling system with oil device, the first godet roller seal wire stretching device, the second godet roller seal wire stretching device, up-coiler coiling and molding device serial connection.
Every cover manifold correspondence is provided with ducting system; Spandex silk correspondence in every cover ducting system is connected on the following godet roller of the device that oils, godet roller, the last godet roller; Last godet roller connects winding head; This equipment also is provided with double screw extruder switch board, manifold switch board, coiling switch board, and wherein the double screw extruder switch board connects delivery pump, carries out closed-loop control; And melt body confession amount flow velocity and temperature, pressure in order to control them in order to control extruder electrical heating temperature, extruder and each metering conveying pump below the extruder.The coiling switch board is in order to control the seal wire speed of godet roller, the last oil mass of the up-coiler spinning speed and the device that oils.
Embodiment 1,
One, gets 75 kilograms of PEPAs, isocyanates and account for 5 kilograms of 20 kilograms, butanediol;
Two, negative pressure feeding is evacuated to and bears 0.8MPa pressure, and the polyester polyols raw polyol is added in the first purification jar through the first reinforced valve that is arranged on the first purification jar, temperature 103-105 ℃, heats and purifies in 45 minutes; The raw material butanediol adds in the second purification jar through the second reinforced valve that is arranged on the second purification jar, temperature 106-108 ℃, heats and purifies in 45 minutes; Isocyanates adds in the 3rd purification jar through the 3rd reinforced valve that is arranged on the 3rd purification jar, temperature 110-112 ℃, heats and purifies in 50-55 minute;
Three, add the 0.8MPa nitrogen pressure; Raw material in the first purification jar is transported to agitated reactor hybrid reaction through second metering conveying pump, the 3rd purification jar interior raw material through the 3rd metering delivery pump through first metering conveying pump, second purification jar interior raw material; The hybrid reaction time is 45 minutes; Temperature in the agitated reactor is heated to 205 ℃, is transported to double screw extruder through the raw material at the agitated reactor internal reaction through the 4th metering conveying pump; 215 ℃ of temperature in the double screw extruder, incorporation time 2 minutes;
Four, double screw extruder is extruded in the fondant filter and filters, 218 ℃ of the temperature in the fondant filter, 1 minute time;
Five, the material that filters through fondant filter arrives manifold through the 5th metering conveying pump, the 6th metering conveying pump, and 216.4 ℃ of the temperature in the manifold get into manifold assembly filter screen spinnerets then, the ejection strand; 22 in filter screen spinnerets footpath, filter screen density 280 orders;
Six, the ejection strand is through air channel cooling, wind-warm syndrome 28.4, wind speed 0.27 (M/S); 57 ℃ of rheumatism;
Seven, the air channel cooling is after the device that oils oils, and the godet roller seal wire stretches afterwards, the first godet roller speed 665M/Min; The second godet roller speed 615M/Min gets into up-coiler coiling and molding, up-coiler winding speed 625M/Min after the godet roller seal wire stretches; The silk back gets into the drying room slaking 10.6-11.5 dawn high-elastic mould spandex fibre silk falls; 42 ℃ of the temperature of slaking, detect vanning at 20 hours curing times after the slaking.
Embodiment 2,
One, getting PEPA accounts for 62 kilograms, isocyanates and accounts for 8 kilograms of 30 kilograms, butanediol;
Two, negative pressure feeding is evacuated to and bears 0.8MPa pressure, and the polyester polyols raw polyol is added in the first purification jar through the first reinforced valve that is arranged on the first purification jar, temperature 103-105 ℃, heats and purifies in 41-45 minute; The raw material butanediol adds in the second purification jar through the second reinforced valve that is arranged on the second purification jar, temperature 106-108 ℃, heats and purifies in 50 minutes; Isocyanates adds in the 3rd purification jar through the 3rd reinforced valve that is arranged on the 3rd purification jar, temperature 110-112 ℃, heats and purifies in 53 minutes;
Three, add the 0.8MPa nitrogen pressure, the raw material in the raw material in the raw material in purifying jar first is purified jar through first metering conveying pump, second is purified jar through second metering conveying pump, the 3rd is through the
Three metering delivery pumps are transported to the agitated reactor hybrid reaction, and the hybrid reaction time is 45 minutes, and the temperature in the agitated reactor is heated to 205-208 ℃, is transported to double screw extruder through the raw material at the agitated reactor internal reaction through the 4th metering conveying pump; 215 ℃ of temperature in the double screw extruder, incorporation time 3 minutes;
Four, double screw extruder is extruded in the fondant filter and filters, 218 ℃ of the temperature in the fondant filter, 1 minute time;
Five, the material that filters through fondant filter arrives manifold through the 5th metering conveying pump, the 6th metering conveying pump, and 216.8 ℃ of the temperature in the manifold get into manifold assembly filter screen spinnerets then, the ejection strand; 24 in filter screen spinnerets footpath, filter screen density 280 orders;
Six, the ejection strand is through air channel cooling, 28.8 ℃ of wind-warm syndrome, wind speed 0.29 (M/S); 59 ℃ of rheumatism;
Seven, the air channel cooling is after the device that oils oils, and the godet roller seal wire stretches afterwards, the first godet roller speed 675M/Min; The second godet roller speed 635M/Min gets into up-coiler coiling and molding, up-coiler winding speed 635M/Min after the godet roller seal wire stretches; The silk back gets into the drying room slaking 12.6-13.5 dawn high-elastic mould spandex fibre silk falls; 48 ℃ of the temperature of slaking, detect vanning at 20 hours curing times after the slaking.
Embodiment 3,
One, getting PEPA accounts for 70 kilograms, isocyanates and accounts for 5 kilograms of 25 kilograms, butanediol;
Two, negative pressure feeding is evacuated to and bears 0.8MPa pressure, and the polyester polyols raw polyol is added in the first purification jar through the first reinforced valve that is arranged on the first purification jar, temperature 103-105 ℃, heats and purifies in 41-45 minute; The raw material butanediol adds in the second purification jar through the second reinforced valve that is arranged on the second purification jar, temperature 106-108 ℃, heats and purifies in 54 minutes; Isocyanates adds in the 3rd purification jar through the 3rd reinforced valve that is arranged on the 3rd purification jar, temperature 110-112 ℃, heats and purifies in 50-55 minute;
Three, add the 0.8MPa nitrogen pressure; Raw material in the first purification jar is transported to agitated reactor hybrid reaction through second metering conveying pump, the 3rd purification jar interior raw material through the 3rd metering delivery pump through first metering conveying pump, second purification jar interior raw material; The hybrid reaction time is 48 minutes; Temperature in the agitated reactor is heated to 205-208 ℃, is transported to double screw extruder through the raw material at the agitated reactor internal reaction through the 4th metering conveying pump; 218 ℃ of temperature in the double screw extruder, incorporation time 3 minutes;
Four, double screw extruder is extruded in the fondant filter and filters, 218 ℃ of the temperature in the fondant filter, 1 minute time;
Five, the material that filters through fondant filter arrives manifold through the 5th metering conveying pump, the 6th metering conveying pump, and 217.2 ℃ of the temperature in the manifold get into manifold assembly filter screen spinnerets then, the ejection strand; 26 in filter screen spinnerets footpath, filter screen density 260 orders;
Six, the ejection strand is through air channel cooling, wind-warm syndrome 29.2, wind speed 0.31 (M/S); 61 ℃ of rheumatism;
Seven, the air channel cooling is after the device that oils oils, and the godet roller seal wire stretches afterwards, the first godet roller speed 685M/Min; The second godet roller speed 655M/Min gets into up-coiler coiling and molding, up-coiler winding speed 645M/Min after the godet roller seal wire stretches; The silk back gets into the drying room slaking 14.6-15.5 dawn high-elastic mould spandex fibre silk falls; 52 ℃ of the temperature of slaking, detect vanning at 24 hours curing times after the slaking.
Refer to the quality gram number of the long fiber of 9000m when official regain, unit is the dawn.That is: 9000 meters long heavy 100 grams are 100D.9000 meters long heavy 75 grams are 75D.Test is to go to weigh on the balance with 1 meter long spandex fibre silk when the spandex fibre dawn counting, and multiply by 9000 with weight then, and obtaining is the dawn number that numerical value is spandex; Because the weight of the spandex fibre silk at 1 meter long 5 dawn has only 0.55mg in the weighing on analytical balance; So have error unavoidably, so the dawn number of spandex silk is a dawn number with 4.6 to 5.5, in actual production; Almost negligible, be referred to as for 5 dawn.
Claims (1)
1. the fusion direct spinning superfine denier spandex fibre production method of two pass godet roller seal wire stretching is characterized in that comprising following processing step,
One, the weight ratio of raw material components, PEPA account for that 62-75%, isocyanates account for 20-30%, butanediol accounts for 5-8%;
Two, negative pressure feeding is evacuated to and bears 0.8MPa pressure, and the polyester polyols raw polyol is added in the first purification jar through the first reinforced valve that is arranged on the first purification jar, temperature 103-105 ℃, heats and purifies in 41-45 minute; The raw material butanediol adds in the second purification jar through the second reinforced valve that is arranged on the second purification jar, temperature 106-108 ℃, heats and purifies in 45-54 minute; Isocyanates adds in the 3rd purification jar through the 3rd reinforced valve that is arranged on the 3rd purification jar, temperature 110-112 ℃, heats and purifies in 50-55 minute;
Three, add the 0.8MPa nitrogen pressure; Raw material in the first purification jar is transported to agitated reactor hybrid reaction through second metering conveying pump, the 3rd purification jar interior raw material through the 3rd metering delivery pump through first metering conveying pump, second purification jar interior raw material; The hybrid reaction time is 45-48 minute; Temperature in the agitated reactor is heated to 205-208 ℃; Raw material through at the agitated reactor internal reaction is transported to double screw extruder through the 4th metering conveying pump, and the temperature 215-218 in the double screw extruder ℃, incorporation time 2-3 minute;
Four, double screw extruder is extruded in the fondant filter and filters, 218 ℃ of the temperature in the fondant filter, 1 minute time;
Five, to manifold, in the manifold temperature 216.4-217.2 ℃ gets into manifold assembly filter screen spinnerets, the ejection strand to the material that filters through fondant filter then through the 5th metering conveying pump, the 6th metering conveying pump; Filter screen The hole diameter of spinneret 22-26 silk, filter screen density 280-260 order;
Six, the ejection strand is through air channel cooling, wind-warm syndrome 28.4-29.2, wind speed 0.27-0.31M/S; Rheumatism 57-61 ℃;
Seven, the air channel cooling is after the device that oils oils, and the godet roller seal wire stretches afterwards, the first godet roller speed 665-685M/Min; The second godet roller speed 615-655M/Min gets into up-coiler coiling and molding, up-coiler winding speed 625-645M/Min after the godet roller seal wire stretches; The silk back gets into the drying room slaking 10.6-15.5 dawn high-elastic mould spandex fibre silk falls; The temperature 42-52 of slaking ℃, curing time 20-24 hour, detect vanning after the slaking.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105833600A CN102021666B (en) | 2010-12-10 | 2010-12-10 | Method for producing melt direct spinning superfine denier polyurethane fibers through guide yarn stretching of double godet rollers |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105833600A CN102021666B (en) | 2010-12-10 | 2010-12-10 | Method for producing melt direct spinning superfine denier polyurethane fibers through guide yarn stretching of double godet rollers |
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| CN102021666B true CN102021666B (en) | 2012-05-23 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1515706A (en) * | 2003-08-28 | 2004-07-28 | 鹰 冯 | Production equipment of polyurethane fibre chip and application method of said polyurethane fibre chip |
| CN1544718A (en) * | 2003-11-26 | 2004-11-10 | 江阴中绿化纤工艺技术有限公司 | Spinning process by differential spandex continuous polymerization dry method |
| CN1924123A (en) * | 2006-09-04 | 2007-03-07 | 杨福兴 | Method of fusion spinning fire resistant special type elastic spandex fiber and producing device thereof |
| CN200964456Y (en) * | 2006-09-04 | 2007-10-24 | 杨福兴 | Device for preparing fusion spinning fire resistant special type elastic spandex fiber |
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- 2010-12-10 CN CN2010105833600A patent/CN102021666B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1515706A (en) * | 2003-08-28 | 2004-07-28 | 鹰 冯 | Production equipment of polyurethane fibre chip and application method of said polyurethane fibre chip |
| CN1544718A (en) * | 2003-11-26 | 2004-11-10 | 江阴中绿化纤工艺技术有限公司 | Spinning process by differential spandex continuous polymerization dry method |
| CN1924123A (en) * | 2006-09-04 | 2007-03-07 | 杨福兴 | Method of fusion spinning fire resistant special type elastic spandex fiber and producing device thereof |
| CN200964456Y (en) * | 2006-09-04 | 2007-10-24 | 杨福兴 | Device for preparing fusion spinning fire resistant special type elastic spandex fiber |
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