CN101988217A - Vertical atomized chemical fiber molding method - Google Patents
Vertical atomized chemical fiber molding method Download PDFInfo
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- CN101988217A CN101988217A CN2009100558939A CN200910055893A CN101988217A CN 101988217 A CN101988217 A CN 101988217A CN 2009100558939 A CN2009100558939 A CN 2009100558939A CN 200910055893 A CN200910055893 A CN 200910055893A CN 101988217 A CN101988217 A CN 101988217A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
Abstract
The invention belongs to the field of manufacturing of chemical fibers and particularly relates to a vertical atomized chemical fiber molding method. The vertical atomized chemical fiber molding method comprises the following steps that: 1, spinning raw materials enter a spinneret plate of a spinning assembly after passing through a distributing pipe, a metering pump and a filter; 2, an air gap is used for cooling; 3, cooling and solidification is carried out in a solidification chamber; 4, bunching bath is carried out; and 5, post processing is carried out. In the invention, the cooling and solidification are uniform so as to avoid causing fibrillation. The mechanical property of the obtained strand silk is special. A distance from the surface of the spinneret plate to the surface of bunching solution is more than 500mm and the making-up operation is convenient. The spinning speed can reach 200 to 350m per minute so as to greatly improve the productivity, save equipment investment and civil engineering investment and reduce operation cost. The vertical atomized chemical fiber molding method can be popularized and applied to the cooling and molding of heavy denier melt spun fibers (more than 20 deniers per piece) which cannot be spun by the conventional air serving as a cooling medium.
Description
Technical field
The invention belongs to chemical fibre and make the field, relate in particular to a kind of upright mist formula chemical fibre forming method.
Background technology
Fiber is to be that raw material is processed into elongated and pliable and tough material with natural or synthetic high polymer.Classify from raw material sources, chemical fibre can be divided into regenerated fiber and synthetic fiber two big classes.Synthetic fiber are the fibers that obtain for raw material spins with synthetic high polymer (resin), wherein account for the synthetic fiber total amount more than 60% for polyester fiber, be also referred to as terylene.Also have polyamide (nylon), polypropylene (polypropylene fibre), polyacrylonitrile (acrylic fibers) etc.; Secondly, polyvinyl alcohol (vinylon), polyurethane (spandex) etc.Regenerated fiber is for being raw material with natural high polymer, handle through physics or physical chemistry, the fiber that makes with special equipment, as: cellulose fibre (regenerated fibers such as cotton linter regenerated viscose fiber, zein fiber, bamboo fibre, stalk), protein fibre (milk fibre), chitin fiber etc.
Classify according to the length of fiber and can be divided into long filament and staple fibre.Long filament is continuous, often calculates with km length.Staple fibre is meant and cuts into the fiber that is similar to natural fabric length that length is calculated with millimeter usually.Distinguish according to length and purposes, generally can be divided into superbhort fiber, staple fibre, medium-length fibre and wool type staple fibre.At present, chemical fibre total output in the whole world reaches more than 60% of fiber aggregate demand.Be synthetic fiber more than 90% in the chemical fibre, regenerated celulose fibre is less than 10%.The toatl proportion of long filament and staple fibre respectively is 50% basically in the chemical fibre.
Spinning moulding is meant with macromolecular material that contains certain natural fabric cellulose content or the prepared one-tenth of synthetic high polymer to have certain viscosity and mobile stoste (being used for solvent spins) or melt (being used for molten spinning), behind the stable thread that forms by spinneret hole with certain pressure through measuring pump, by cooling (or vaporization at high temperature) shaped device of particular design, be solidified into the process of strand (fiber) gradually with certain mechanical performance.
Existing chemical fibre spinning moulding technology can be divided into two big classes: molten spinning and solvent (solution) spin.The medium of chemical fibre cooling forming has forms such as air (inert gas) cooling, water cooling, solvent (solution) cooling.Concrete can be subdivided into again that melt spins, dry method is spun, wet method is spun, the dried method etc. that squirts.
The high polymer that molten spinning requires its decomposition temperature of fiber-forming polymer (Td) to be higher than the linear arrangement of molecule of fusion point (Tm) or flowing temperature (Ts) could adopt this spinning process.During used melt spins since its melt temperature be higher than air far away, generally with air as cooling medium, easily available, low production cost.Air after the constant temperature and pressure constant humidity is handled becomes 90 ° of angles to blow to the strand surface of heat by custom-designed fairing equably with the fiber traffic direction; Between the melt thread of fusion and the clean gas flow of low temperature heat exchange takes place, thread is solidified into strand from outside to inside gradually along spinning journey, is that a bundle fiber enters next workshop section through the godet roller collection.Common fairing is quenching air window and ring blowing headgear etc.The crucial selection for blowing effective area and rectification filtering material of the structural design of blowing fairing, when satisfying the strand chilling requirement with assurance, wind speed evenly blows to each rhizoid bar surface effectively, forms all even good as-spun fibre of quality.Blowing window (headgear) effectively control, the fiber of the solidification point of blowing height, area and strand the fiber number size, singly to spin the output of position closely related.The speed of the present industrialization of spinning speed long filament is at 2000～6000m/min; Staple fibre is at 500～1800m/min.This kind method strand enters moulding in the water after leaving spinnerets immediately.The water that has absorbed the melt heat is lowered the temperature with cold exchange principle, and refrigerant adopts≤8 ℃ water.Though compare with the air cooling, cooling effect is fine, the loss of cold is very big.
Be applicable to that the equipment that dry method that solvent spins spins is different with melt-spun cooling forming principle with principle, it is to adopt the high temperature inert gas forced convertion, takes away the solvent that evaporates in the spinning solution thread.Gas is in the process refrigerated separation, and heat cycles is used again; Strand is cooling forming in gassiness tubulose path, and cooling air is identical with the strand traffic direction.Advantage is that strand operates in air (inertia) gas, and kinetic damping is very little, and air-flow flows out in the bottom, path in the same way with the effect of the downward tractive force of strand, and the orderly air-flow of nature has reduced disturbance and probability of happening, helps obtaining high-quality strand.The dry method solvent spins spinning speed can reach 2000m/min, and spinning equipment arranges that vertically floor space is little.Shortcoming is that spinning workshop section depth of building spins wet spinning, the dried method height that squirts than solvent, is subjected to the restriction (cost) of depth of building, and the fiber number of spinneret hole quantity and individual thread all is subjected to certain restriction.
(fiber of or melt spun monofilament fiber number 〉=20d) adopts wet method to spin or the dried method (immersed water-cooled but method) that squirts more to be lower than the fiber-forming polymer of fusion point for decomposition temperature.
Wet method is spun used equipment as shown in Figure 1, and the solvent spinning stock solution enters into spinnerets 4 by measuring pump 2 and filter 3, and spinnerets 4 is placed on and is solidified the body lotion submergence in the coagulating tank 14.Cooling and phase separation take place in the stoste thread of spinnerets 4 ejections simultaneously in coagulation bath, to obtain the inner preliminary strand that is separated that produces of surface cure, take filament out of by seal wire slewing rollers 8 then, enter post-processing stages by godet roller 9 and finish; The length of general freezing point is controlled at 100～300cm.The advantage of this method is, the specific volume of 20 ℃ of water is 4.13 times of 20 ℃ of air, and thermal conductivity factor is 23.73 times; Water is compared with air, is good thermal conductor and energy storage body; Therefore the spinneret orifice number (radical of bundle fiber) and the filament number of spinnerets 4 are higher than melt-spun far away, reach as high as 200000 holes; Adopt the filament number＞20d of the melt-spun of water-cooled, even can reach 200d～500d.Body lotion adopts major-minor groove circulation simultaneously, stable process conditions, and control method is easy, and is easy to operate, is applicable to that all solvents are spun into fine high polymer.
Shortcoming be (1) stoste thread in coagulation bath, be subjected to the influence of frictional force between mass transfer rate between liquid-liquid and the two kinds of fluid boundarys, for fear of the skin breakage of stoste thread, the spinning speed control＜100m/min of wet spinning generally only is 15～80m/min.Therefore, it is lower singly to spin a production capacity, and the spinning equipment investment is high, and floor space is big.(2) in order to guarantee the relative constant of bath temperature in each false set bath and concentration, must in time digest heat and solvent (concentrated phase) that the stoste that enters coagulation bath is brought into, the way that wet method is spun (comprising the dried method that squirts) technology is---adopt big bath raio mode: increase the volume of the auxilliary groove of coagulating bath and improve the cycle-index of coagulation bath.Auxilliary groove equipment investment, building are taken up an area of all corresponding with energy consumption higher.
Driedly squirt the used equipment of method as shown in Figure 2, between spinnerets 4 and coagulating tank 14, increasing air gap 10 on the basis that wet method is spun, making molten (melting) body thread leave spinnerets 4 enters in the air gap with ambient gas exchange heat takes place earlier, the surface forms one deck cured film, frictional force between thread surface and the surrounding gas medium diminishes, spin speed thereby improved, and kept wet method again in the coefficient of friction of strand surface between reduction and body lotion of smooth and curing and spun the fireballing advantage of heat and mass in coagulating tank, it is reported, spin speed at 80～100m/min.
Shortcoming is the influence that (1) air gap control technology is subjected to gas length, air velocity, gas flow temperature, moving gaseouse medium cost recovery, and difficulty is very big.(2) the preliminary cooling curing of heat exchange surface only takes place and promptly enters coagulating bath in air in nascent strand and the air gap, influenced by the mass transfer velocity between strand inside and the body lotion, spins the speed raising and is subjected to certain limitation.(3) air gap is excessive, and the as-spun fibre surface cure is too fast, easily produces fibrillation, road, influence back spinnability; Air gap is too small, and solidification effect is not obvious, and spinning plate surface and liquid level distance is too small, and spinning-in operation carries out under liquid, and difficulty is bigger, has restricted the increase of spinneret orifice quantity, and according to the data that has disclosed, spinneret orifice is up to 30000 hole/positions.(4) the same mode that also adopts big bath raio with the conventional wet spinning process is controlled the relatively stable of the temperature of coagulating bath and concentration.This part equipment investment, civil engineering occupation of land and energy consumption are all very high.
Summary of the invention
Technical problem to be solved by this invention provides a kind of upright mist formula chemical fibre forming method, this method adopts the vertical chamber of solidifying to replace traditional coagulating tank, make the strand of operation downwards cool off in the chamber and solidify being full of solidifying of atomizing body lotion, spinning speed is fast, civil engineering cost is low.
A kind of upright mist formula chemical fibre forming method may further comprise the steps:
1) spinning material is through entering the spinnerets of filament spinning component behind distributing pipe, measuring pump and the filter;
2) air gap cooling: spinnerets sprays strand downwards by spinnerets with solidify air gap between the chamber, and the preliminary cooling curing in strand surface forms nascent strand;
3) solidify the chamber cooled and solidified: strand enters after by air gap and solidifies the chamber, and the atomizer that solidifies the both sides, chamber sprays body lotion to strand, makes strand in further cooled and solidified in service downwards;
4) boundling is bathed: strand and body lotion enter the boundling bath simultaneously continuously, and strand continues to solidify from outside to inside in the boundling bath, accumulates a synnema sheet under the effect of seal wire slewing rollers;
5) treatment and finishing section: the silk sheet of deriving by the seal wire slewing rollers in the boundling bath enters treatment and finishing section end spinning line through a godet roller.
Boundling bath limit is installed in the described lower end, chamber of solidifying, and itself and boundling bath connecting place are connected as a single entity, and both sides are opened wide in addition.
After the strand of primary solidification entered the boundling bath, strand gait of march in the boundling bath was 100～350m/min.
When carrying out solvent when spinning, described spinning material is the spinning solution of concentration 70%～90%, 60～90 ℃ of organic solvents preparations of temperature, and the body lotion that solidifies atomizer ejection in the chamber is the oxidation methyl morpholine solvent of 10～25 ℃ of concentration 10%～17%, temperature.
Described treatment and finishing section comprises drawing-off, cut-out, washing, bleaches, oils, dry and packing.
When carrying out molten spinning, described spinning material is 200～350 ℃ of 100% spinning material, melt temperatures, and described to solidify in the chamber atomizer ejection body lotion be water, 16～30 ℃ of temperature.
Upright mist formula chemical fibre forming method of the present invention, its vertical atmosphere of solidifying indoor formation atomizing body lotion and air encirclement, substituted the situation that strand liquid in conventional wet spinning or the dry-jet wet spinning method is surrounded by the coagulating bath medium of liquid state,---fricting movement between the liquid changes liquid into---mist+gas with liquid, make spinning speed improve 1 times at an easy rate to more than the several times, improved production capacity greatly, spinning plate surface can be brought up to more than the 500mm from 300mm to boundling liquid level distance, makes things convenient for the porous spinning-in operation;
The heat part of strand is dispersed into air, the atomized liquid that a part is directed onto on the strand is taken away, the control of the demand of atomized liquid (flow, temperature and concentration) can be disposed separately according to strand moulding actual demand amount, the control accuracy height, save cold, the hole count of spinnerets also can reach more than 200000 holes, under same production capacity, spins bit quantity and reduces.Strand basic forming in the boundling bath, reduced the frictional resistance that strand moves in the boundling bath, improved spinning speed, and body lotion concentration and temperature are very few to the fiber quality influence in the boundling bath, boundling is bathed the volume of auxilliary groove and circulating pump setting and is only considered that technological operation elasticity uses the short liquor ratio circulation to get final product, and has saved equipment investment and construction investment has reduced operating cost.
Adopt vertical atomizing cooled and solidified, the fresh liquid film that every rhizoid bar is all sprayed all the time continuously is wrapped in equably, is upgrading, it is in a certain angle that every rhizoid bar and atomized liquid pearl are penetrated direction, parallel with inner heat transfer, the mass transfer direction of strand to the surface, therefore cooling curing is very even, avoided the generation of fibrillation, resulting strand mechanical performance has special quality, can be applied to adopt existing air as cooling medium the cooling forming of the thick dawn melt-spun fibre (＞20 dawn/root) that can not spin.
Description of drawings
Fig. 1 spins theory diagram for existing wet method (coagulating bath);
Fig. 2 is the existing dried method theory diagram that squirts;
Fig. 3 is the theory diagram of the upright mist formula chemical fibre forming method of the present invention.
Among the figure: 1 solution distributing pipe, 2 measuring pumps, 3 filters, 4 spinneretss, 5 solidify chamber, 6 boundling baths, the auxilliary groove of 7 boundlings bath, 8 seal wire slewing rollers, 9 godet rollers, 10 air gaps, 11 atomizers, 12 medial launders, 13 head tanks, 14 coagulating tanks.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's statement, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
As shown in Figure 3, a kind of upright mist formula chemical fibre forming method:
Carry out solvent when spinning, at first spinning material is a spinning solution, 60～90 ℃ of temperature, oxidation methyl morpholine (NMMO) solvent strength 70～90%, after sending into from solution distributing pipe 1 through entering the spinnerets 4 of filament spinning component behind measuring pump 2 and the filter 3, the stoste thread of extruding downwards by spinnerets 4 guide holes (strand) is by spinnerets 4 and solidify air gap 10 between the chamber 5, can adjust atomizer 11, allow fog be full of air gap 10, the spray film temperature is a room temperature, 10 air that are full of room temperature of air gap, the preliminary cooling curing in strand surface becomes nascent strand; With respect to traditional dried method technology that squirts, as-spun fibre surface cool condition of cure gentleness, the fibrillation probability of happening reduces greatly, and air by air gap with descending strand constantly replenish enter solidify indoor, optimization by air gap height, adjustable air inlet and atomization quantity can be eliminated fibrillation substantially and take place.
Strand enters after by air gap 10 and solidifies chamber 5 then, the 11 pairs of strands of atomizer that solidify 5 both sides, chamber spray body lotion strand are cooled off, the distributed quantity of atomizer 11 is set according to the moulding situation, and body lotion is the oxidation methyl morpholine solvent of 10～25 ℃ of concentration 10%～17%, temperature;
The body lotion of last strand and atomizer 11 ejections falls into and solidifies the boundling bath 6 that chamber 5 sealings link to each other, strand is boundling in boundling bath 6,9 derivation directly enter treatment and finishing section through godet roller to accumulate a synnema sheet by seal wire slewing rollers 8, carry out that drawing-off, cut-out, washing are bleached, oiled, finish whole production after the dry and packing, because of strand solidifies entering boundling bath 6 front surfaces, the frictional resistance that moves in water reduces greatly, therefore, spin speed and can bring up to 100～350m/min.
Constantly recycle and reclaim by the auxilliary groove 7 of boundling bath in the boundling bathing pool 6 from solidifying the body lotion of collecting the bottom, chamber, wherein a part is the dissolving use of spinning solution workshop section after sending to the recycle section purified treatment, another part enters medial launder 12 after sending into head tank 13 concentration revisals earlier, sends into atomizer 11 by atomizing measuring pump 1 and uses as the atomizing solidification liquid; A water of washing that produces in the post processing water-washing process all is admitted to the usefulness of head tank 13 as the revisal of atomizing body lotion concentration.
The height of described air gap 10 is 20mm in this example, the flow angle that guarantees atomizer 11 in solidifying the chamber is at vertical and all essential all strands that cover of horizontal direction, to guarantee that every rhizoid bar is in downward running, each, the surface all attached by the body lotion droplet moment, form very thin liquid film, the atomizer 11 of every group of both sides horizontal symmetrical distribution provides coagulation bath from same measuring pump 2, the ejection pressure of each nozzle equates, guarantee each horizontal direction, the coagulation bath droplet is identical with spray volume to the impulsive force of the moment on strand surface, the resistance of motion between strand and the environment is the resistance between liquid-fog, and kinetic friction force is compared greatly and reduced with the liquid-liquid method of existing immersion.The strand surface is wrapped in liquid all the time, has prevented the premature setting on thread surface, and generation fibrillation etc. causes the post processing tensile property poor.Spinning speed also can 1 times and even is several times as much as traditional wet spinning and dry-jet wet-spinning, strand relies on the gravity of self, pass air gap, solidify the chamber, enter in the boundling bath and in this process, basically form as-spun fibre, from spinnerets to boundling bath liquid level distance＞500mm, make things convenient for spinning-in operation, the hole count of spinnerets also can reach more than 200000 holes.Therefore, when enhancing productivity, shorten the length and the width of spinning workshop greatly, reduced equipment and construction investment.
Below 3 cases: product specification is identical=2.22dtex, and total spinnerets hole count equates=160000 holes, spinning moulding technology difference, production capacity and civil engineering data relatively are as shown in the table:
As shown in Figure 3, a kind of upright mist formula chemical fibre forming method:
The difference of embodiment 2 and embodiment 1 is that embodiment 2 is a molten spinning, and spinning material is 100% spinning material melt, 200～350 ℃ of temperature, and described to solidify in the chamber atomizer 11 ejection body lotions be water, 16～30 ℃ of temperature.The water droplets that is sprayed onto the strand surface runs into the melt more than 200 ℃, and vaporization is immediately distributed and entered in the air, and the heat that enters tank is sub-fraction wherein just; The source of water is easy to get, and is with low cost, and the high-temperature water that falls into tank only need dispose a cover circulation cooling tower cooling system and can be cooled to normal temperature.Saved considerable cold, the strand Forming Quality is not affected.
Claims (6)
1. a upright mist formula chemical fibre forming method is characterized in that, may further comprise the steps:
1) spinning material is through entering the spinnerets of filament spinning component behind distributing pipe, measuring pump and the filter;
2) air gap cooling: spinnerets sprays strand downwards by spinnerets with solidify air gap between the chamber, and the preliminary cooling curing in strand surface forms nascent strand;
3) solidify the chamber cooled and solidified: strand enters after by air gap and solidifies the chamber, and the atomizer that solidifies the both sides, chamber sprays body lotion to strand, makes strand in further cooled and solidified in service downwards;
4) boundling is bathed: strand and body lotion enter the boundling bath simultaneously continuously, and strand continues to solidify from outside to inside in the boundling bath, accumulates a synnema sheet under the effect of seal wire slewing rollers;
5) treatment and finishing section: the silk sheet of deriving by the seal wire slewing rollers in the boundling bath enters treatment and finishing section end spinning line through godet roller.
2. upright mist formula chemical fibre forming method as claimed in claim 1 is characterized in that: boundling bath limit is installed in the described lower end, chamber of solidifying, and itself and boundling bath connecting place are connected as a single entity, and both sides are opened wide in addition.
3. upright mist formula chemical fibre forming method as claimed in claim 1 is characterized in that: after the strand of primary solidification entered the boundling bath, strand gait of march in the boundling bath was 100～350m/min.
4. as the described upright mist formula chemical fibre forming method of any claim in the claim 1～3, it is characterized in that: when carrying out solvent when spinning, described spinning material is the spinning solution of the oxidation methyl morpholine solvent of 60～90 ℃ of concentration 70%～90%, temperature, and the body lotion that solidifies atomizer ejection in the chamber is the oxidation methyl morpholine solvent of 10～25 ℃ of concentration 10%～17%, temperature.
5. upright mist formula chemical fibre forming method as claimed in claim 4 is characterized in that: described treatment and finishing section comprises drawing-off, cut-out, washing, bleaches, oils, dry and packing.
6. as the described upright mist formula chemical fibre forming method of any claim in the claim 1～3, it is characterized in that: when carrying out molten spinning, described spinning material is 200～350 ℃ of 100% spinning material, melt temperatures, described to solidify in the chamber atomizer ejection body lotion be water, 16～30 ℃ of temperature.
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| CN2009100558939A CN101988217A (en) | 2009-08-04 | 2009-08-04 | Vertical atomized chemical fiber molding method |
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| CN2009100558939A CN101988217A (en) | 2009-08-04 | 2009-08-04 | Vertical atomized chemical fiber molding method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831368A (en) * | 2015-06-01 | 2015-08-12 | 苏州市晨彩纺织研发有限公司 | Mist-cooled fuse wire spray head |
| CN106367822A (en) * | 2016-11-08 | 2017-02-01 | 广东省化学纤维研究所 | Chemical fiber spinning cooling system and application thereof |
| CN106480521A (en) * | 2016-11-30 | 2017-03-08 | 南京右转信息科技有限公司 | Dry wet spinning machine |
| CN109092082A (en) * | 2018-10-08 | 2018-12-28 | 湖北中泉环保技术有限公司 | A kind of high humility hollow fiber filter membrane silk casting method |
| CN114808232A (en) * | 2022-04-29 | 2022-07-29 | 杭州惠丰化纤有限公司 | Horizontal traction machine for CEY production and use method thereof |
| CN116407957A (en) * | 2022-12-29 | 2023-07-11 | 南京水诺环保科技有限公司 | Preparation method of one-step molding Gao Tuoyan nanofiltration membrane |
| CN117026397A (en) * | 2023-10-09 | 2023-11-10 | 南通摩瑞纺织有限公司 | Spinning cooling device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831368A (en) * | 2015-06-01 | 2015-08-12 | 苏州市晨彩纺织研发有限公司 | Mist-cooled fuse wire spray head |
| CN106367822A (en) * | 2016-11-08 | 2017-02-01 | 广东省化学纤维研究所 | Chemical fiber spinning cooling system and application thereof |
| CN106367822B (en) * | 2016-11-08 | 2018-09-04 | 广东省化学纤维研究所 | A kind of chemical fiber spun yarn cooling system and its application |
| CN106480521A (en) * | 2016-11-30 | 2017-03-08 | 南京右转信息科技有限公司 | Dry wet spinning machine |
| CN109092082A (en) * | 2018-10-08 | 2018-12-28 | 湖北中泉环保技术有限公司 | A kind of high humility hollow fiber filter membrane silk casting method |
| CN109092082B (en) * | 2018-10-08 | 2020-06-12 | 湖北中泉环保技术有限公司 | High-humidity hollow fiber filter membrane silk pouring method |
| CN114808232A (en) * | 2022-04-29 | 2022-07-29 | 杭州惠丰化纤有限公司 | Horizontal traction machine for CEY production and use method thereof |
| CN116407957A (en) * | 2022-12-29 | 2023-07-11 | 南京水诺环保科技有限公司 | Preparation method of one-step molding Gao Tuoyan nanofiltration membrane |
| CN116407957B (en) * | 2022-12-29 | 2023-09-26 | 南京水诺环保科技有限公司 | Preparation method of one-step molding Gao Tuoyan nanofiltration membrane |
| CN117026397A (en) * | 2023-10-09 | 2023-11-10 | 南通摩瑞纺织有限公司 | Spinning cooling device |
| CN117026397B (en) * | 2023-10-09 | 2023-12-26 | 南通摩瑞纺织有限公司 | Spinning cooling device |
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Application publication date: 20110323 |