CN1844504A - Process for producing porous poly(ethylene terephthalate) fine denier filament by using single plate - Google Patents
Process for producing porous poly(ethylene terephthalate) fine denier filament by using single plate Download PDFInfo
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- CN1844504A CN1844504A CN 200610038916 CN200610038916A CN1844504A CN 1844504 A CN1844504 A CN 1844504A CN 200610038916 CN200610038916 CN 200610038916 CN 200610038916 A CN200610038916 A CN 200610038916A CN 1844504 A CN1844504 A CN 1844504A
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- polyethylene terephthalate
- tow
- monofilament
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Abstract
This invention relates to a single-sheet producing multi-holes ethylene terephthalate elongated silk technology, which mainly includes melting body transfer, filtering melting body and extruding silk, cooling separately, oiling and joining and wrapping the tow. This invention uses silk-separating compound cooling method that is using side blowing device to cool the inner face of the tow, adding arc deep bead at the outer side of the side blowing device to make part of side blowing wind rebound by arc deep bead, which makes the tow have well cooling effect.
Description
Technical field
The present invention relates to a kind of technology of veneer production porous polyethylene terephthalate fine denier filament, refer in particular to the technology that veneer is produced 250-300 hole polyethylene terephthalate fine denier filament.
Background technology
In the prior art, a lot of companies adopt continuous condensed method that the polyethylene terephthalate melt direct spinning is produced POY (pre-oriented yarn) and FDY (fullly drawn yarn (FDY)) product, or after adopting continuous condensed method production polyethylene terephthalate section, melting spinning again.
The technological process of spinning is as follows: after the polyethylene terephthalate melt of autopolyester device improves pressure through the melt booster pump in the future, again through the melt cooler cooling, and be assigned to each bar spinning threadling; Perhaps polyethylene terephthalate is cut into slices through super-dry, and, pass through fondant filter again, be assigned to each spinning threadling by behind the screw extruder pressurizing melting.Every spinning threadling has 36～48 spinning stations, and each spinning station has a melt metering pump, and the polyethylene terephthalate melt is filament spinning component and the spinnerets by filter screen is housed after the metering pressurization of melt metering pump, and is extruded into as-spun fibre.The air-conditioning air cooling that blows out by the lateral blowing device through precision control, through the oil nozzle oiling device fuel feeding of accurate measurement, tow arrives up-coiler by behind the oiling device through spinning shaft then, priority is through two draw-off godets before coiling, between two draw-off godets Network device is arranged, tow arrives winding head through behind the draw-off godet, rolls into cylindrical spinning cake, to the default definite value of each spinning cake, automaticallying switch in full volume back, behind the artificial doff, carries out reconciliation of inventory.
The type of cooling of the employing of tow is mainly contained two kinds of lateral blowing cooling and ring blowing coolings.Device making and use cost that ring blowing cooling is adopted are all very high, so there be limited evidence currently of adopts; The lateral blowing device is used widely because of cost is low, easy to maintenance, but the lateral blowing cooling means is only applicable to veneer and produces the following product in 192 holes, and produce the product in 200-300 hole for veneer, because pitch of holes is little, tow is very close, so one-sided cooling air can not penetrate tow, cause the cooling of ectonexine tow irregular, it is big that bar is done value, and it is irregular to add the bullet poststaining, can't satisfy instructions for use.
Summary of the invention
The object of the invention provides a kind of technology of veneer production porous polyethylene terephthalate fine denier filament, and it can evenly cool off the ectonexine tow when the cooling tow, and cooling cost is lower.
Technical scheme of the present invention is: a kind of technology of veneer production porous polyethylene terephthalate fine denier filament, and it comprises following operation,
(1), the polyethylene terephthalate of fusion is transported to spinning manifold, again with the filament spinning component place of this polyethylene terephthalate melt Conveying in the spinning manifold;
(2), filter the polyethylene terephthalate melt at the filament spinning component place, the spinnerets that employing has a plurality of spinneret orifices squeezes silk, promptly will leach the monofilament that polyethylene terephthalate melt ejection behind the impurity forms many fusions the spinneret orifice from spinnerets, each monofilament formation multifilament that is combined with each other;
(3), a branch of multifilament is separately formed at least two bundle multifilament, each Shu Fusi is placed between lateral blowing device and the arc, by the lateral blowing device each monofilament of internal layer is carried out air cooling, the wind that arrives the arc place is reflected by arc and blows to outer each monofilament, so that outer monofilament is carried out air cooling, make each Shu Fusi form solid-state tow respectively;
(4), cooled each synnema bundle oils by oil nozzle respectively;
(5), each synnema Shu Hecheng that will separate is a branch of, the coiling tow forms cylindrical spinning cake.
A plurality of spinneret orifices on the spinnerets that adopts in the step (2) are split up into two groups of arrangements, and two groups of spinneret orifices constitute two patterns, have a segment distance between the opposite edges of these two patterns.
The present invention compared with prior art has following advantage:
The greatest problem that veneer is produced 250-300f (f represents the monofilament radical in the multifilament) polyethylene terephthalate fine denier filament is the cooling uniformity problem, because it is very close that tow distributes, when using the lateral blowing cooling, wind is warmed up to 35 ℃ rapidly by initial 22～25 ℃ when passing tow, and wind direction is parallel to the tow direction of motion by initial becoming perpendicular to the tow direction of motion, thereby makes outer field tow can not get effective cooling.The uniformity of cooling directly has influence on the uniformity with high molecular crystallization of polymer and orientation between the 250-300 root monofilament of a branch of multifilament, and crystallization and the irregular meeting of orientation cause that drafting tension is irregular, the dyeing uniformity of product is poor, the low problem of dyeing qualification rate; Outer silk cooling is bad, and not only the macromolecular orientation degree of ectonexine tow and degree of crystallinity difference are big, and the manufacture order silk size is prone to the fracture of wire phenomenon when being no more than the product of 0.5 dtex (per 1 myriametre silk weighs 0.5 gram), produces unstable.By a minute silk, 250～300 monofilament on the same block of spinnerets are divided into two strands of multifilament that contain 125～150 monofilament, thereby gap, the spinnerets center change that makes spinneret orifice distribute the most intensive is big, obtains good cooling.By adding arc wind board, make the center position of part lateral blowing bounce-back hard waste bundle, thereby make outer tow obtain good cooling in the outside.
150 dawn/a 288 (final fiber number that adds elater that adopts said method to produce, dawn is the unit of fiber thickness degree, 1 dawn=10/9 dtex) POY (pre-oriented yarn), bar is done the CV (coefficient of variation, a kind of measurement standard for the thickness variation) value is less than 1.35%, full-rolling rate is greater than 98%, and the high-class product rate is greater than 97%, and the qualification rate that adds bullet processing (adding elater) reaches 98%.
The present invention adopts the compound cooling method of branch silk, and itself and existing ring blowing cooling air and the contrast of lateral blowing cooling method are listed as follows:
| Ring blowing process for cooling scheme | Lateral blowing process for cooling scheme | The process program that divides the compound cooling method of silk | |
| The type of cooling | Interior ring blows or outer shroud blows | One-sided lateral blowing cooling; Be regardless of the silk cooling. | Add deep bead at fore side, the part lateral blowing is run into the deep bead back reflection, thereby from the outside tow is cooled off, form double-sided cooled; Be divided into the cooling of two synnemas, cooling air can effectively cool off the intensive tow in spinnerets central area. |
| Mode oils | Two oil nozzles oil | The corresponding oil nozzle of assembly | Corresponding two oil nozzles of assembly |
| Spinneret hole distributes | Circular distribution | Rhombus or circular distribution | Rhombus or circular distribution, middle imperforate section is widened |
| Full-rolling rate | High | Can not steady production | High |
| The dyeing qualification rate | High | Low | High |
| Strip dry CV value | Good | Difference | Good |
| Cost | High | Low | Low |
Table 1:150 dawn/288 a production contrast table
Description of drawings
Accompanying drawing 1 is the structural front view of spinnerets;
The operation schematic diagram that accompanying drawing 2 oils by oil nozzle for tow separately;
Accompanying drawing 3 is the refrigerating work procedure schematic diagram of tow;
Accompanying drawing 4 is the front view of arc;
Accompanying drawing 5 is the vertical view of arc;
Wherein: 1, spinnerets; 2, spinneret orifice; 3, filament spinning component; 4, oil nozzle; 5, arc; 6, lateral blowing device; 7, concave profile.
The specific embodiment
A kind of processing technology of veneer production porous polyethylene terephthalate fine denier filament, it comprises following operation,
(1), melt Conveying: with booster pump or screw extruder the polyethylene terephthalate of fusion is transported to spinning manifold, by melt metering pump the polyethylene terephthalate melt is delivered to filament spinning component 3 again;
(2), filter, extrude: the polyethylene terephthalate melt filters in filament spinning component 3 places process, filament spinning component 3 comprises spinnerets 1, polyethylene terephthalate melt 2 kinds of ejections of spinneret orifice from the spinnerets 1 with leaching behind the impurity form the multifilament of being made up of multifilament;
(3), divide silk compound cooling method cooling curing: a branch of multifilament separately to be formed at least two bundle multifilament, in the most preferred embodiment that the present invention adopts, divide the silk back to form two bundle multifilament; Each Shu Fusi is placed between lateral blowing device 6 and the arc 5, shown in accompanying drawing 4-accompanying drawing 5, has a plurality of continuously arranged arcwall faces 7 on the arc 5, each monofilament of forming multifilament is positioned at the axial line place of arcwall face; Shown in accompanying drawing 3, each monofilament that is positioned at internal layer by 6 pairs in lateral blowing device carries out air cooling, the wind that arrives arc 5 places is blowed to outer field each monofilament by arcwall face 7 reflections of arc 5, outer monofilament is carried out air cooling, makes each Shu Fusi form solid-state tow respectively;
(4), oil: cooled each synnema bundle oils by oil nozzle 4 respectively, in the operation that oils, divides the cooled tow of silk to oil through two oil nozzles, has guaranteed the uniformity that oils, and can reduce friction, eliminate the coherent of static, increase tow;
(5), network, coiling: the tow after oiling is adjusted tension force through draw-off godet, and twine through Network device, the tow plying that just separates at the Network device place, form cylindrical spinning cake by winding head coiling tow again, Network device can improve backing-off performance, though the cylindrical spinning cake on winding head be easy to take off from winding head;
Spinnerets 1 adopts and divides the plate mode to arrange spinneret orifice 2, the overall distribution mode of spinneret orifice 2 adopts rhombus to arrange or circular arrangement, among the embodiment shown in the accompanying drawing 1, many with spinneret orifice 2 whole rounded distributions, and a plurality of spinneret orifices 2 are split up into two groups of arrangements, have one section aporate area between two groups of spinneret orifices 2, as shown in Figure 1, the centre of spinnerets 1 is an aporate area.
The spinnerets 1 that uses among the present invention has adopted branch plate mode, and the type of cooling has adopted divides silk a compound cooling method, the multifilament that veneer is extruded adopted and closed-minute-cooling of closing, the method that oils, solved cool off irregular, irregular problem oils.
Below enumerate three examples of the technology of veneer production porous polyethylene terephthalate fine denier filament, specifically set forth process characteristic of the present invention.
Example one: the POY (pre-oriented yarn) that produces 150 dawn/288 piece (the final fiber number that adds elater).The diameter of spinnerets is 100 millimeters, adopts rhombus to distribute, and is regardless of silk; Assembly is selected: filtering material is selected metal sand for use, component pressure 150 kg/cm, and each spinning station has 10 assemblies, and assembly centre-to-centre spacing is 127 millimeters; Spinning temperature: 293 ℃; Quenching air window: high 1.2 meters, in cellular board is arranged, make air-out be uniform laminar condition; In the quenching air window outside arc 5 is installed, this arc 5 is made up of 10 semicircle stainless steel substrates, 63.5 millimeters of radiuses (shown in accompanying drawing 4); Oil content: 0.4～0.45%; Winding speed: 2800 meters/minute.Implementation result: produce instability, strip dry CV value (coefficient of variation that the fineness degree of the silk that calculates changes) is greater than 1.6%, and full-rolling rate adds the fluctuation of bullet machine tensions greatly less than 85%, and the dyeing qualification rate is less than 90%.
Example two: produce 150 dawn/288 POY (pre-oriented yarn) of piece (adding the final fiber number of elater).The spinnerets diameter is 100 millimeters, and spinneret orifice adopts rhombus to distribute; Assembly is selected: filtering material is selected metal sand for use, component pressure 150 kg/cm, and each spinning station has 10 assemblies, and assembly centre-to-centre spacing is 127 millimeters; Spinning temperature: 293 ℃; Quenching air window: high 1.2 meters, in cellular board is arranged, make air-out be uniform laminar condition; In the quenching air window outside arc 5 of the usefulness of keeping out the wind is installed, arc 5 is made up of 10 semicircle stainless steel substrates, 63.5 millimeters of radiuses (shown in accompanying drawing 4); The silk of extruding from spinnerets is divided into two, and two oil nozzles oil, and pool capital before draw-off godet; Oil content: 0.4～0.45%; Winding speed: 2800 meters/minute.Implementation result: produce and stablize, strip dry CV value is less than 1.35%, and full-rolling rate is greater than 98%, and the high-class product rate adds the bullet passing rate of processing and reaches 98% greater than 97%.
Example three: produce 200 dawn/288 POY (pre-oriented yarn) of piece (adding the final fiber number of elater).The spinnerets diameter is 100 millimeters, adopts rhombus to distribute; Assembly is selected: filtering material is selected metal sand for use, component pressure 150 kg/cm; Each spinning station has 10 assemblies, and assembly centre-to-centre spacing is 127 millimeters; Spinning temperature: 292 ℃; Quenching air window: high 1.2 meters, in cellular board is arranged, make air-out be uniform laminar condition; The deep bead of arc is installed in the quenching air window outside, and this deep bead is made up of 10 semicircle stainless steel substrates, 63.5 millimeters of radiuses; The silk of extruding from spinnerets is divided into two, and two oil nozzles oil, and pool capital before draw-off godet; Oil content: 0.42%; Winding speed: 2850 meters/minute.Implementation result: produce and stablize, strip dry CV value is less than 1.35%, and full-rolling rate is greater than 97%, and the high-class product rate adds the bullet passing rate of processing greater than 97% greater than 96%.Example one is the example of the processing technology of the present veneer production porous polyethylene terephthalate fine denier filament that generally adopts, and example two and example three are two embodiment of the present invention, compare with example one, and the production effect of example two, embodiment three is better.
Claims (2)
1, a kind of technology of veneer production porous polyethylene terephthalate fine denier filament, it is characterized in that: it comprises following operation,
(1), the polyethylene terephthalate of fusion is transported to spinning manifold, again this polyethylene terephthalate melt Conveying is located to the filament spinning component (3) in the spinning manifold;
(2), locate to filter the polyethylene terephthalate melt at filament spinning component (3), the spinnerets (1) that employing has a plurality of spinneret orifices (2) squeezes silk, promptly will leach the monofilament that polyethylene terephthalate melt ejection behind the impurity forms many fusions the spinneret orifice (2) from spinnerets (1), each monofilament formation multifilament that is combined with each other;
(3), a branch of multifilament is separately formed at least two bundle multifilament, each Shu Fusi is placed between lateral blowing device (6) and the arc (5), by lateral blowing device (6) each monofilament of internal layer is carried out air cooling, the wind that arrival arc (5) is located is blowed to outer each monofilament by arc (5) reflection, so that outer monofilament is carried out air cooling, make each Shu Fusi form solid-state tow respectively;
(4), cooled each synnema bundle oils by oil nozzle (4) respectively;
(5), each synnema Shu Hecheng that will separate is a branch of, the coiling tow forms cylindrical spinning cake.
2, the technology of veneer production porous polyethylene terephthalate fine denier filament according to claim 1, it is characterized in that: a plurality of spinneret orifices (2) on the spinnerets (1) that adopts in the step (2) are split up into two groups of arrangements, two groups of spinneret orifices (2) constitute two patterns, have a segment distance between the opposite edges of these two patterns.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610038916 CN1844504A (en) | 2006-03-14 | 2006-03-14 | Process for producing porous poly(ethylene terephthalate) fine denier filament by using single plate |
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|---|---|---|---|
| CN 200610038916 CN1844504A (en) | 2006-03-14 | 2006-03-14 | Process for producing porous poly(ethylene terephthalate) fine denier filament by using single plate |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942703A (en) * | 2010-07-20 | 2011-01-12 | 江苏瑞泰科技有限公司 | Spinning spinneret for polyphenylene sulfide fiber high-capacity spinning |
| CN102021664A (en) * | 2010-12-30 | 2011-04-20 | 张家港欣阳化纤有限公司 | Spinneret plate |
| CN102071480A (en) * | 2011-01-27 | 2011-05-25 | 桐昆集团浙江恒盛化纤有限公司 | Method for producing POY of tight heavy fleece |
| CN102409418A (en) * | 2011-09-08 | 2012-04-11 | 桐昆集团股份有限公司 | Production method of terylene fine-denier porous yarn |
| CN102443859A (en) * | 2011-09-08 | 2012-05-09 | 桐乡市中洲化纤有限责任公司 | Production method of fine-denier porous POY black yarn |
| CN102926001A (en) * | 2011-08-11 | 2013-02-13 | 苏州一丞咨询服务有限公司 | Method for changing wind direction of lateral wind blower in fine-denier spinning |
| CN102925997A (en) * | 2011-08-11 | 2013-02-13 | 苏州一丞咨询服务有限公司 | Lateral wind blowing device for fine-denier spinning |
| CN106732381A (en) * | 2016-11-11 | 2017-05-31 | 华北电力大学（保定） | A kind of PM2.5 adsorbents and preparation method thereof |
| CN106868612A (en) * | 2017-03-28 | 2017-06-20 | 苏州市朗润纺织科技有限公司 | Cooling device in spinning |
| CN108301063A (en) * | 2017-12-21 | 2018-07-20 | 桐昆集团浙江恒腾差别化纤维有限公司 | A kind of production technology of ultra-fine soft suede fluffy fiber |
| CN111636104A (en) * | 2020-05-27 | 2020-09-08 | 浙江恒优化纤有限公司 | Composite spinning equipment and composite spinning process |
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2006
- 2006-03-14 CN CN 200610038916 patent/CN1844504A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942703A (en) * | 2010-07-20 | 2011-01-12 | 江苏瑞泰科技有限公司 | Spinning spinneret for polyphenylene sulfide fiber high-capacity spinning |
| CN102021664A (en) * | 2010-12-30 | 2011-04-20 | 张家港欣阳化纤有限公司 | Spinneret plate |
| CN102071480A (en) * | 2011-01-27 | 2011-05-25 | 桐昆集团浙江恒盛化纤有限公司 | Method for producing POY of tight heavy fleece |
| CN102071480B (en) * | 2011-01-27 | 2012-11-21 | 桐昆集团浙江恒盛化纤有限公司 | Method for producing POY of tight heavy fleece |
| CN102926001A (en) * | 2011-08-11 | 2013-02-13 | 苏州一丞咨询服务有限公司 | Method for changing wind direction of lateral wind blower in fine-denier spinning |
| CN102925997A (en) * | 2011-08-11 | 2013-02-13 | 苏州一丞咨询服务有限公司 | Lateral wind blowing device for fine-denier spinning |
| CN102409418A (en) * | 2011-09-08 | 2012-04-11 | 桐昆集团股份有限公司 | Production method of terylene fine-denier porous yarn |
| CN102443859A (en) * | 2011-09-08 | 2012-05-09 | 桐乡市中洲化纤有限责任公司 | Production method of fine-denier porous POY black yarn |
| CN106732381A (en) * | 2016-11-11 | 2017-05-31 | 华北电力大学（保定） | A kind of PM2.5 adsorbents and preparation method thereof |
| CN106868612A (en) * | 2017-03-28 | 2017-06-20 | 苏州市朗润纺织科技有限公司 | Cooling device in spinning |
| CN108301063A (en) * | 2017-12-21 | 2018-07-20 | 桐昆集团浙江恒腾差别化纤维有限公司 | A kind of production technology of ultra-fine soft suede fluffy fiber |
| CN111636104A (en) * | 2020-05-27 | 2020-09-08 | 浙江恒优化纤有限公司 | Composite spinning equipment and composite spinning process |
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