CN102021679B - Method for producing fine denier acrylic tops - Google Patents
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Abstract
The invention relates to a method for producing fine denier acrylic tops. 0.44-1.11dtex fine denier acrylic tows are taken as raw materials, and the method comprises the following steps of: manufacturing the tops by using a breaking machine, wherein the total draw ratio is 6.05-6.27, the space of rebreaking areas is 5mm greater than the conventional space, the pressure of a pressing plate in a crimping box is 1-2 buckles greater than the conventional pressure, and the steaming pressure is 0.15-0.3MPa; and manufacturing the tops by using a gilling machine, wherein the needle plate number of a comb box is NO.6-8, the draft multiple in a coiling area is 1.15-1.3, the draft multiple in a feeding area of the comb box is 0.98, the main draft multiple is 6-8, and the front roller space is 35-45mm. The quality indexes of the fine denier acrylic tops produced by the method meet the qualified product standard, and partial indexes meet the high-class product standard.
Description
Technical field
The present invention relates to a kind of production technology of micro-denier acrylic fiber tow preparing bar, in order to produce the micro-denier acrylic fiber wool top.
Background technology
,, in conjunction with production practices background technology is described below as foundation take " synthetic fiber process technology " and " textile material ".
1 micro-denier acrylic fiber
Usually fiber number 0.44～1.3dtex is divided into micro-denier acrylic fiber, 0.44dtex is following to be ultra-fine acrylic fibers.The micro-denier acrylic fiber fiber is the microporous spinneret plate that utilizes high-tech means to make, and spinning and aftertreatment technology condition spinning forms by changing, and is one of main raw material of imitative cashmere, imitative silk.
Micro-denier acrylic fiber is soft, intensity is high, gloss is soft, and hygroscopicity doubles than common acrylic fibers, is used for high-count yarn spun, produces underwear, sweater, class silk shirt etc.; Also can imitate cashmere and imitative silk fabric etc. with other fiber blend production, strong, the frivolous softness of fabric covering power, color and luster is soft, drapability good and comfortable and easy to wear, has smooth, the soft and whippy feel of the sort of exquisiteness of natural cashmere, create beyond thought effect, meet the new trend of world today's dress ornament.
The technical process of 2 micro-denier acrylic fiber wool tops and condition
At present, produce the bulky top method, mostly adopt and break the legal system bar.This method technological process is short, floor space is little, automaticity is high, speed is fast, is convenient to management, saves human and material resources and the energy.But, because this method makes acrylic fibre tow break in being forced to property of break machine, and be randomness breaking of each zone, so the wool top product undercoat coefficient of producing is higher.
Breaking the legal system bar is to utilize the multi-region break machine that endless tow is broken, in this process, process through heating, cooling or decatize, make and have certain curling shrink strip or regular, again shrink strip and regular are mixed combing by a certain percentage of the weight, make acrylic bulky top, its technological process such as Fig. 1.
The micro-denier acrylic fiber wool top adopts 0.44dtex～1.11dtex acrylic fiber, the legal system bar is broken in employing, make the products such as woollen sweater, scarf and baby blanket through spinning, has good damp and hot equilibrium condition, make warming rate and Air permenbility index all be in top standard in the same type of material, the performances such as outward appearance, gloss, dyeing are better than natural fabric, have the very large market development and are worth.
The deficiency that 3 background technologies exist
For the micro-denier acrylic fiber tow, adopt the ordinary student production. art to have two aspects control difficult point: the one, fiber is easily around roller, ruptures easily breaking the operation tow, fibre length and to break the bar irregularity wayward, and spin the difficult that becomes after making; The 2nd, grilling operation combing difficulty, the fiber damaged is serious, and card nailing neps, workprint are many, and the wool top irregularity is high.
Summary of the invention
Purpose of the present invention adopts 0.44dtex～1.11dtex acrylic fibre tow to break the legal system bar, mixes according to a certain percentage, produces the micro-denier acrylic fiber wool top with certain shrinkage factor.The fabric made from its spinning has super simulation performance, aspect the sense of touch of snugness of fit, antistatic behaviour, pilling tendency, skin, really reaches boundary comfortable, that leisure is noble, and bulkiness and flexibility are that any natural, animal fiber is beyond one's reach.
1 raw material index request
It is as follows to use 0.44dtex～1.11dtex micro-denier acrylic fiber tow leading indicator to require:
Table 1 0.44dtex～1.11dtex micro-denier acrylic fiber tow achievement data
1.1 micro-denier acrylic fiber tow and spinnability
In the productive experiment, the micro-denier acrylic fiber tow of use requires fibre fineness even, and the fleece of tow is good, fault is few, reaches requirement to guarantee the wool top product quality.
1.2 oil content and regain
Require the oil content of acrylic fibre tow and regain to touch the mark in the scope, spinning property is good.
Acrylic fiber need add oil agent in rear process, to fall low-fiber coefficient of friction and resistance, make fiber softening level and smooth, reduces electrostatic phenomenon, the irregular randomness that also can affect fibrous fracture of oil content.
The acrylic fiber regain directly affects spinning property and filament draw performance.Excessive such as regain, spinnability descends, and break machine and gill box are easily around roller, and fibrous fracture point also will change; Too small such as regain, easily produce static, flyings, dust etc.If the tow regain is uneven, the fibrous fracture point will be changed, fibre length is wayward, fault increases.
2 production Technology
The process route that adopts the stretch break method converter to join decatize is produced the micro-denier acrylic fiber wool top.0.44dtex～1.11dtex acrylic fibre tow is introduced the multi-region break machine, under special process acts, breaks and becomes shrink strip through hot-stretch, prestretching, multi-region, or become regular through decatizing again.The two suitable ratio of control or independent wherein a kind of, again through two road gill boxes and close, drawing-off, combing, the balling-up of reeling at last, obtain the micro-denier acrylic fiber bulky top, or thin regular wool top of dawn, or thin dawn contraction wool top, shrinkage can be carried out technology controlling and process according to user's needs.
2.1 break machine technological parameter
2.1.1 total draw ratio
Break machine-processed bar and be the critical process of the thin dawn top quality of control, total draw ratio of break machine is key parameter, mainly considers from following factors: the intensity of (1) tow is high, and elongation at break is large, equal even being smooth to the touch, and drafting multiple is height just; Otherwise then low.(2) the fracture drafting multiple is large, the breakaway poing reach, and the average length of breaking fiber is just short, on the contrary the fracture drafting multiple is little, moves behind the breakaway poing, and it is just long to break average fiber length.(3) for reducing card nailing neps and the workprint of breaking bar, total draw ratio should be as far as possible little, but can cause acrylic fibre tow to be difficult for breaking, and the rate that becomes mildewed is higher.(4) evenness quality of bar is broken in control, reduces and breaks the bar irregularity, improves later process textile process performance.
Total draw ratio is the production of 6.05～6.27 suitable thin dawn wool tops, and card nailing neps, workprint are relatively low, break the operation failure rate is low, and the wool top evenness quality is good.
The relation of the total draw ratio of table 2 and thin dawn top quality
2.1.2 the rebreaking zone spaces
Cut again after the selection that the rebreaking zone spaces comprises and space and front two aspects of spacing of cutting again, mainly consider from following factors: the one, the longest fiber length the bar is broken in control, and it is large to space, and the longest fiber of breaking in the bar is just long; It is little to space, and it is just short to break in the bar longest fiber; The 2nd, the distribution of lengths of control fiber to overcut fibre control, generally need only be grasped front rebreaking zone and effectively space and draw ratio, can reach requirement; To staple fibre control, then under the condition of front rebreaking zone manufacturing process determination, cut again after the corresponding selection and space and draw ratio, make possibility once broken only occurs when entering front rebreaking zone, to reduce the chance of generation staple fibre.
By experiment, the rebreaking zone spaces will slightly large 5～10mm than producing spacing of conventional wool top, and average fiber length and distribution of lengths are better.
2.1.3 crimper pressure
Crimper is the major part that forms the break machine coiled body, is that wool top is exerted pressure, and it is curling that fiber is produced, and increases cohesive force between the fiber, improves the later process spinnability.
The one, adjust curling roller pressure.Generally speaking, curling roller pressure is 6～7MPa.This value is excessive, and the wool top roll curvature is large, and the strip that extrudes is really up to the mark, is difficult for combing, and intensity is large.This value is too small, and strip is loose, and crimpness is little, spins after being unfavorable for.
The 2nd, adjust the crimper platen pressure, the crimper platen pressure is used for regulating fibrous crimpness and curling fastness.Pressure is little, and crimpness is little, and curling fastness is poor, can cause to split bar, loose bar phenomenon in rear process, so that affect fibre strength, affects the carding effect of gill box, and produces easily card nailing neps and workprint.Produce regular wool top, less than the crimpness of produce shrinking wool top, namely reduce the crimper platen pressure, otherwise make the wool top tension because of filament contraction.Produce 0.44dtex～1.11dtex Regular Acrylic wool top, more bigger than the curling platen pressure of producing common regular wool top, general many 1～2 buttons are advisable.
2.1.4 decatize pressure
Break fiber and behind coiled body, enter in the steaming box, in case, pile with, loose continuously through steam, make fiber typing, eliminate shrinkage stress in the fiber, make and break the bar shrinkage factor and reach standard-required.Steam pressure is regulated with control valve, and the large decatize of pressure is abundant, and the fiber retraction is abundant, but crimpness and cohesive force are little; Pressure is little, temperature is low, and wool top residual shrinkage rate is large, and crimpness is large, wool top drawing-off, combing difficulty.Grope through production, see Table 3, it is better that decatize pressure is controlled at 0.15～0.3MPa, and wool top is soft, fiber crimp is moderate.
Table 3 is broken the impact of bar decatize pressure
2.2 gill box technological parameter
In the production, because the fine count fiber fiber number is thin, number of fiber increases on the dried unit of the feeding bar cross section, make the friction aggravation between fiber and needle point, not only produce easily card nailing neps and workprint, also easily produce the faults such as hardhead, knot tying between drawing rollers, the drawing-off difficulty goes out the rule and does also wayward.Improve top quality by adjusting grilling technique.
2.2.1 regular and shrink strip proportioning
In first grilling operation, thin regular wool top of dawn mixes in proportion with the contraction wool top, and weight proportion is 52: 48.
2.2.2 debatching Qu Luola district drafting multiple
Because the micro-denier acrylic fiber fiber is very thin, break bar and be difficult for drawing-off, cause the combing difficulty after entering the comb case.So the drafting multiple in debatching Qu Luola district is bigger, be controlled at 1.15～1.3 better; Rear roller spaces and is 200mm.
2.2.3 comb case feeding district adopts negative drawing-off
Drafting multiple between comb case and the rear roller is large, and is too tight when wool top enters card wire, extracts difficulty during drawing-off, and the strip drawing-off is not opened, and hardhead occurs.In the time of should making wool top enter the comb case, balanced auxiliary the opening of energy makes again fiber too not loose, so drafting multiple is designed to 0.98.
2.2.4 dominant draft multiple
Dominant draft is the drawing-off between needle plate and the front roller, is the position that gill box mainly plays the drawing-off combing, thus larger than other district's drawing-off, and in whole technological process, progressively increased to front by rear.But because the raw material mix of upper machine is more fluffy, so drafting multiple can not be excessive, if drafting multiple is excessive, many, the fragile fibers of the card nailing neps of generation; But can not be too little, the strip drawing-off is not opened, produce the thickness joint, cause the heavy irregularity index of bar degradation.So the design drafting multiple is 6～8.
2.2.5 front roller spaces
The narrower fiber that spaces and be applied to lack, and wealthyer spacing is applied to larger output weight.In actual production, front ratch is generally half of average fiber length.If it is too little to space, more the spininess plate reacts on wool top, and its result has been owing to increased drafting resistance, and causes needle plate to fracture or contingency occurs; Too wealthy if space, staple fibre may become floating fiber, and the result produces fiber or the fine hair piece without drawing-off, makes the wool top of output irregular.So determining and will considering according to the average length of thin dawn wool top fiber, character, output weight, drawing-off value, card wire pin number etc. of front ratch is controlled at 40～45mm comprehensively.
2.2.6 reduce the needle plate number
Because the number of fiber on the dried unit cross-sectional area of feeding bar is many, needle point and interfibrous friction aggravation in the wool top carding process damages easily fiber and produces card nailing neps, workprint, and the probability that produces the faults such as hardhead, knot tying between drawing rollers is high.Therefore, carry out bold process innovation in the grilling operation, reduce the needle plate number, use 6～No. 8 needle plate, alleviated fiber combing load, improve the shaping evenness quality.
The effect of invention
The production development of micro-denier acrylic fiber wool top has improved the spinning property of fiber, satisfies the production equipment requirement, and product quality satisfies the Grade A standard.
Description of drawings
The production technological process of Fig. 1 micro-denier acrylic fiber wool top.
Fig. 2 break machine.
Fig. 3 gill box.
Wherein: 1, feed roller 2, after-drawing roller 3, electric hot plate 4, front stretching roller 5, break in advance roller 6, the main roller 7 of breaking, after cut again roller 8, before cut again roller 9, curling roller 10, wool top cylinder 11, stent regulatory region 12, heat stretch zone 13, rear rebreaking zone 14, front rebreaking zone, 15, buncher 16, feeding roller 17, bar-guiding device 18, rear roller 19, feeding platform 20, comb case 21, front roller 22, horn mouth 23, debatching Qu Luola district 24, comb case feeding district 25, main drawing area
The specific embodiment
Break machine by thread guide mechanism, hot extension mechanism, break mechanism, decatize mechanism, coiled body, dust collection mechanism, cooling body, pressing mechanism and transmission mechanism etc. and form, it is 6.05～6.27 suitable to produce the total draw ratio of micro-denier acrylic fiber wool top and be.Thread guide mechanism comprises high-altitude silk guide frame and vertical silk guide frame, tow false twisting, folding and irregular status that aerial silk guide frame causes in the time of can eliminating vanning; Vertical silk guide frame is controlled stent 〉=18cm for can locate and stent regulatory region 11.Hot extension mechanism comprises feed roller 1, heat stretch zone 12, and the heat stretch zone is comprised of after-drawing roller 2, front stretching roller 4, electric hot plate 3 etc., 1.30 times of heat stretch zone drafting multiples, and electric hot plate 3 temperature are regulated by button, are controlled at 135 ℃.Break mechanism and be by break in advance roller 5, main break roller 6, after cut again roller 7, before cut again roller 8 and form, cut again roller overcut fibre broken, the distribution of lengths of control fiber, this ratch is adjustable, the spacing than the large 5mm of common process of rear rebreaking zone 13, front rebreaking zone 14.Coiled body is comprised of buncher, curling roller 9 and crimper, exerts pressure to breaking bar, and it is curling that fiber is produced, and increases cohesive force between the fiber, improves the later process processing characteristics.Produce 0.88dtex Regular Acrylic wool top, curling platen pressure is more bigger than producing common regular wool top, and general many 1～2 buttons are advisable; It is better that decatize pressure is controlled at 0.15～0.3MPa.Cooling conveyer belt is positioned at the rear portion of break machine output, and its effect is that break machine wool top is out cooled off, and guaranteeing the fiber stable shrinkage rate, and strip is sent in the wool top cylinder 10.Break machine break in advance roller, main break roller, after cut again roller, the front ceramic roller that cuts again roller all is processed into hollow type, pass into the cooling of B level desalted water, cooling water outlet temperature is 16～18 ℃, and with the temperature and the loss of fiber shrinkage that reduce surface of roller, break machine speed is 160m/min.
Gill box is mainly graded by feeding part, combing drawing-off part, shaping shaped portion, vacuum part, running part, hydraulic part and electrical part and forms.Wherein, feeding part and combing drawing-off partly are important, and technological process is: acrylic top, and------debatching Qu Luola---combing drawing-off---shaping is shaped guide strip rack.
Feeding part comprises guide strip rack, guide strip roller, sliver fork, buncher 15 and feeding roller 16, and regular of thin dawn and shrink strip weight proportion are 52: 48, or use separately the production of regular (contraction) wool top; The drafting multiple in debatching Qu Luola district 23 is 1.15～1.3 times.Combing drawing-off part mainly is comprised of rear roller 18, feeding platform 19, comb case 20, front roller 21 and horn mouth 22, carries out combing and drawing-off to breaking bar, makes fiber reach parallel straight, presents the filament state, and improves and improve the uniformity of wool top.Wherein, the drafting multiple in comb case feeding district 24 is 0.98 times; The drafting multiple of main drawing area 25 is 6～8 times; The coverage of main drawing area is that front roller spaces, and the control parameter is 45mm; Comb case needle plate is 6～No. 8.
Acrylic fibre tow preparing bar technique begins by breaking operation, stretches under heating first, then cools off under tension force, forces to break, make have certain shrinkage factor, satisfactory, the uniform shrink strip of fibre length; If partly add a steaming box in the break machine shaping, shaping potential contraction after decatize has just disappeared, and makes shrinkage factor less than 4% regular wool top, is contained in the bar cylinder and enters next procedure.Shrink strip and regular the weight ratio by 48%: 52% of machine under the break machine are mixed, feeding frame by feeding part enters gill box, carry out and close, drawing-off, combing, make wool top mix, parallel straight, be contained in and enter two road gill boxes in the bar cylinder, then pass through drawing-off, combing, coiling balling-up.
On the basis of many experiments Optimizing Process Parameters, the method of adopting new technology is produced micro-denier acrylic fiber top quality analysis data and is seen Table 4, standard with reference to the regular wool top of 1.32～2.44dtex in the FZ/T53002-2000 industry standard, card nailing neps and workprint reach high-class product, undercoat coefficient is higher, and average fiber length can suitably be adjusted according to user's needs.
Table 4 micro-denier acrylic fiber top quality is analyzed data
Claims (1)
1. a micro-denier acrylic fiber wool top production method is used and is broken the legal system bar, it is characterized in that:
Break machine by thread guide mechanism, hot extension mechanism, break mechanism, decatize mechanism, coiled body, dust collection mechanism, cooling body, pressing mechanism and transmission mechanism and form, producing the total draw ratio of micro-denier acrylic fiber wool top is 6.05～6.27; Thread guide mechanism comprises high-altitude silk guide frame and vertical silk guide frame, tow false twisting, folding and irregular status that aerial silk guide frame causes in the time of can eliminating vanning; Vertical silk guide frame is controlled stent 〉=18cm for can locate and the stent regulatory region; Hot extension mechanism comprises feed roller, heat stretch zone, and the heat stretch zone is comprised of after-drawing roller, front stretching roller, electric hot plate, 1.30 times of heat stretch zone drafting multiples, and electric plate temperature is regulated by button, is controlled at 135 ℃; Break mechanism and be by break in advance roller, main break roller, after cut again roller, before cut again roller and form, cut again roller overcut fibre broken, the distribution of lengths of control fiber, this ratch is adjustable, the spacing than the large 5mm of common process of rear rebreaking zone, front rebreaking zone; Coiled body is comprised of buncher, curling roller and crimper, exerts pressure to breaking bar, and it is curling that fiber is produced, and increases cohesive force between the fiber, improves the later process processing characteristics; Produce 0.88dtex Regular Acrylic wool top, curling platen pressure is than producing large 1～2 button of common regular wool top; Decatize pressure is controlled at 0.15～0.3MPa; Cooling conveyer belt is positioned at the rear portion of break machine output, and its effect is that break machine wool top is out cooled off, and guaranteeing the fiber stable shrinkage rate, and strip is sent in the wool top cylinder; Break machine break in advance roller, main break roller, after cut again roller, the front ceramic roller that cuts again roller all is processed into hollow type, pass into the cooling of B level desalted water, cooling water outlet temperature is 16～18 ℃, and with the temperature and the loss of fiber shrinkage that reduce surface of roller, break machine speed is 160m/min;
Gill box is comprised of feeding part, combing drawing-off part, shaping shaped portion, vacuum part, running part, hydraulic part and electric part, wherein, feeding part and combing drawing-off partly are important, and technological process is: acrylic top, and------debatching Qu Luola---combing drawing-off---shaping is shaped guide strip rack;
Feeding part comprises guide strip rack, guide strip roller, sliver fork, buncher and feeding roller, and regular of thin dawn and shrink strip weight proportion are 52: 48, or uses separately regular or the production of contraction wool top; The drafting multiple in debatching Qu Luola district is 1.15～1.3 times; Combing drawing-off part mainly is comprised of rear roller, feeding platform, comb case, front roller and horn mouth, carries out combing and drawing-off to breaking bar, makes fiber reach parallel straight, present the filament state, and the uniformity of improvement and raising wool top, wherein, the drafting multiple in comb case feeding district is 0.98 times; The drafting multiple of main drawing area is 6～8 times; The coverage of main drawing area is that front roller spaces, and the control parameter is 45mm; Comb case needle plate is 6～No. 8;
Acrylic fibre tow preparing bar technique begins by breaking operation, stretches under heating first, then cools off under tension force, forces to break, make have certain shrinkage factor, satisfactory, the uniform shrink strip of fibre length; If partly add a steaming box in the break machine shaping, shaping potential contraction after decatize has just disappeared, and makes shrinkage factor less than 4% regular wool top, is contained in the bar cylinder and enters next procedure; Shrink strip and regular the weight ratio by 48%: 52% of machine under the break machine are mixed, feeding frame by feeding part enters gill box, carry out and close, drawing-off, combing, make wool top mix, parallel straight, be contained in and enter two road gill boxes in the bar cylinder, then pass through drawing-off, combing, coiling balling-up.
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| CN105297476A (en) * | 2014-07-22 | 2016-02-03 | 句容市润龙纺织品有限公司 | Preparation process for five-ring expanded Iceland yarn |
| CN104357970A (en) * | 2014-10-28 | 2015-02-18 | 舟山久意达机械有限公司 | Sliver mixing machine |
| CN106032594A (en) * | 2015-03-20 | 2016-10-19 | 吉林奇峰化纤股份有限公司 | Super soft acrylic fiber bulked cashmere wool top preparation method |
| CN106637524A (en) * | 2016-12-23 | 2017-05-10 | 东华大学 | Sliver drafting and cutting device and method for wool type acetate fiber |
| CN109930262B (en) * | 2019-03-22 | 2020-08-11 | 河北艾科瑞纤维有限公司 | Wool top containing regenerated cellulose fibers and preparation method and application thereof |
| CN110257938B (en) * | 2019-06-17 | 2021-06-15 | 张家港市荣昌涤纶毛条有限公司 | Production process of polyester bulked wool tops |
| CN110331452B (en) * | 2019-06-17 | 2021-06-15 | 张家港市荣昌涤纶毛条有限公司 | Production process of flat yarn polyester wool tops |
| CN110592731A (en) * | 2019-09-04 | 2019-12-20 | 海安国洋机械科技有限公司 | Flame-retardant acrylic fiber stretch-breaking device |
| CN112376140B (en) * | 2020-11-08 | 2022-07-29 | 南通市纤维检验所 | Method for producing acrylic bulked yarn by cotton spinning equipment |
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| CN101058905A (en) * | 2006-04-21 | 2007-10-24 | 中国石油天然气股份有限公司 | High constriction acrylic fibre tow preparing method |
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| CN101058905A (en) * | 2006-04-21 | 2007-10-24 | 中国石油天然气股份有限公司 | High constriction acrylic fibre tow preparing method |
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