CN102747566B - Fabric rope shaped dyeing machine and dyeing method by using supercritical carbon dioxide fluid as medium - Google Patents

Abstract

The invention discloses a fabric rope shaped dyeing machine and dyeing method by using supercritical carbon dioxide fluid as a medium. A cloth lifting wheel system is arranged in a dyeing kettle body, so as to jointly drive the rope-shaped fabric to circulate in sequence through a traction action of a cloth guide rope; such process parameters as circulation flow rate of dyeing fluid, circulating speed of fabric, dyeing temperature, pressure and the like are rationally controlled to achieve uniformly processing piece-dyed fabric in the supercritical carbon dioxide fluid medium, in particular light and easily deformed fabric. According to the invention, a circulating loop of the rope-shaped fabric is shortened, a complicated spray nozzle system is saved and load of a circulating pump is relieved, thereby effectively reducing device manufacturing cost and sealing and designing requirements of the system, achieving a medium-small size of the device system, and improving practicability and durability of the system. The anhydrous rope-shaped dyeing machine and dyeing method have the advantages of strong practicability, simple device design, convenience for manufacturing and using, environmental protection and the like.

Description

A kind of fabrics in roped form dyeing machine and colouring method taking supercritical carbon dioxide fluid as medium

Technical field

The present invention relates to dyeing installation and colouring method thereof that a kind of fabric becomes rope form, particularly a kind of dyeing machine for rope-like fabric and colouring method thereof taking supercritical carbon dioxide fluid as medium, belongs to textile dyeing and finishing technical field.

Background technology

Supercritical fluid especially supercritical carbon dioxide fluid is the fluid media (medium) of a kind of safety, environmental protection, green.Replace traditional water bath to the fabric processing of dyeing with supercritical carbon dioxide fluid, due to dye-free waste water and other generation of waste materials, can effectively avoid the consumption of great lot of water resources, the energy and chemicals in traditional dyeing process, and a large amount of high concentration, high COD _crthe severe contamination that colorful wastewater causes ecological environment, can thoroughly realize green, environmental protection, clean production, has advantages of and saves water and energy simultaneously.The research and development of relevant colouring method and dyeing installation in supercritical carbon dioxide fluid, the application in suitability for industrialized production to gradual perfection and popularization supercritical fluid non-aqueous dyeing, the environmental protection, the ecology that promote whole textile printing and dyeing industry production are significant.

In recent years, because increasing and the environmental pollution of water resources shortage obtain extensive concern day by day, and to industry energy-saving reduce discharging, the continuing to increase of the macro adjustments and controls dynamics of cleaner production, what is more important is along with the continuous progress of supercritical carbon dioxide fluid relevant device and dyeing key technology research and development and practical, and the textiles non-aqueous dyeing processing taking supercritical carbon dioxide fluid as medium has day by day caused the great interest of industry and enterprise and shown great attention to.Through the development in one period, domestic relevant departments and mechanism, especially this seminar is aspect the research and development about supercritical carbon dioxide fluid dyeing installation, from the mini-plant in laboratory, progressively develop into and there is fairly large pilot scale change system, and dyeing key technology as fluid in suitable dyes performance, dedicated dye research and development, the aspects such as process optimization have obtained rapid progress, and realize pilot scale piece dyeing in 2010 to 2011 and produced demonstration, the non-aqueous dyeing of at home and abroad releasing first taking supercritical carbon dioxide fluid as medium is produced cloth specimen and portioned product.

Related documents report both at home and abroad, at present for supercritical carbon dioxide fluid medium dye critical component---dyeing caldron structure and the cooked mode that dyes thereof of processing, vertical/horizontal warp beam pattern of general many employings is carried out piece dyeing (CN1807742A, CN101024922A, CN2688735,), or adopt the cheese pattern processing (CN1200153A that dyes, CN2350412), in addition, the dyeing kettle that fabric is carried out to dye gigging with twin shaft pattern also had minority bibliographical information (CN101148813A, CN101082157A).

But above-mentioned disclosed middle-size and small-size equipment is more is applicable to laboratory research, in the time of actual industrial production application, still have more problem to need further to solve.No matter be vertical or horizontal warp beam pattern, all yarn dyeing such as the more cheese that is applicable to porous processing.And for piece dyeing, reach evenly good Color, and its design to equipment and technical requirement, difficulty are all larger, and its production efficiency is low simultaneously, and processing cost is high; And for twin axle dye gigging pattern, equally also there is the problem such as the sealing of power transmission and system and the durability of sealing device, and this dyeing pattern is also difficult to be guaranteed to the uniformity of dyeing caldron inner fluid circulation, in addition, because fabric exists compared with hightension when the shuttling movement, the fabric variety of suitable processing is also restricted (CN101760914A, CN201560318U).Thereby this seminar first design and implementation piece dyeing pattern and the change system (CN101760914A, CN201560318U) thereof of fabric in rope form in high pressure supercritical carbon dioxide fluid medium, and obtained good effect.But owing to carrying cloth wheel system and nozzle system, to be arranged on dyeing caldron external, the closed circuit of fabric is long, can be applicable to preferably Large-Scale Equipment system, and be unfavorable for medium and smallization of equipment, simultaneity factor also has some limitations the light and thin type creasing easily and yielding textile application, and the spraying system of equipment has also proposed high requirement to high-pressure circulation pump design and use thereof.

Description

In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind ofly taking supercritical carbon dioxide fluid as medium, have that even dyeing effect is good, wide accommodation, the rope dyeing machine that is particularly suitable for light and thin type and yielding textiles and a colouring method thereof.

The technical scheme that realizes the object of the invention is to provide a kind of fabrics in roped form dyeing machine taking supercritical carbon dioxide fluid as medium, and it comprises supercritical fluid dyeing still, dyeing fluid circulating system; Described supercritical fluid dyeing still comprises kettle, carries cloth apparatus, cloth storage trough and selvage guide rope; Kettle is horizontal cylinder shape high pressure dyeing still; In the chamber of kettle, centre is provided with pyriform separate mesh; Carry cloth apparatus and comprise that carrying cloth takes turns and fabric guide roll, carry cloth wheel and be located at the endoceliac top of still, fabric guide roll is arranged on a side of carrying cloth wheel side-lower, pyriform separate mesh; Cloth storage trough comprises horizontal separate mesh, accepts webmaster, pyriform separate mesh bottom and undaform draw the space that cloth passage forms, laterally separate mesh is arranged on a side of pyriform separate mesh, undaform draws cloth passage and is located at the opposite side of pyriform separate mesh, accepts webmaster and be located at the bottom of kettle; Kettle is provided with gathering hole and observation window; The top of kettle is provided with fluid inlet, and the below of kettle is provided with fluid issuing, and fluid inlet is connected with dyeing fluid circulating system by pipeline respectively with fluid issuing; Described selvage guide rope is end to end annular pallial siphuncle, depended on selvage guide rope by dyeing and weaving thing and form fabric in rope form, selvage guide rope is through carrying cloth wheel and fabric guide roll, traction kettle bottom is accepted fabric in rope form in webmaster and is entered undaform and draw cloth passage, the webmaster of accepting that enters again kettle bottom, selvage guide rope and fabric in rope form are made upper and lower shuttling movement in kettle.

Selvage guide rope of the present invention, its annular length is adjustable, and shape of cross section is circle, ellipse or other mellow and full shape of profile.The described cloth of carrying is taken turns and fabric guide roll, and carrying cloth wheel is driving wheel, and fabric guide roll is driven voller.

Utilize above-mentioned dyeing machine to carry out a method for the fabrics in roped form dyeing taking supercritical carbon dioxide fluid as medium, comprise the steps:

(1) will be fixed on selvage guide rope with rope form form by dyeing and weaving thing one end, and wear cloth and enter cloth carrying under the active role of cloth wheel and the traction of selvage guide rope;

(2) will be sewed up by dyeing and weaving thing head and the tail, form ring-type;

(3) after airtight dyeing caldron, carry out emptying to whole coloring system; Adopt force (forcing) pump to coloring system supercharging, in the supercritical carbon dioxide fluid medium that is 1L/min～500L/min at Fluid Circulation flow, depended on selvage guide rope by dyeing and weaving thing and form fabric in rope form, selvage guide rope is through carrying cloth wheel and fabric guide roll, traction kettle bottom is accepted fabric in rope form in webmaster and is entered undaform and draw cloth passage, enter the webmaster of accepting of kettle bottom, selvage guide rope and the fabric in rope form cloth speed with 2m/min～200m/min in kettle is made upper and lower shuttling movement again, to the fabric processing of dyeing.

Dyeing temperature in dyeing caldron is 100 DEG C～160 DEG C, and pressure is 9MPa～30Mpa.

To fabric dye process time be 20min～300min.

Compared with prior art scheme, remarkable advantage of the present invention is:

1, the present invention will carry cloth wheel system be arranged on dyeing kettle in, shortened the closed circuit of fabric in rope form, and jointly driven fabric in rope form shuttling movement by the draw of selvage guide rope, effectively reduced the required power of fabric shuttling movement; And saved complicated nozzle system, and alleviate the load of circulating pump, can effectively reduce device fabrication cost and system sealing and designing requirement, and be conducive to realize the miniaturization of change system, improve its practicality.

2, the present invention is by the draw of selvage guide rope, and drive fabric in rope form shuttling movement, thereby fabric is in dyeing cycle motion process, be loose formula state, minimum without tension force or tension force, therefore its suitable fabrics variety range is wide, be particularly suitable for the supercritical carbon dioxide fluid rope form piece dyeing dyeing of light and thin type and yielding textiles.

3, the present invention has saved spraying system, has reduced Fluid Circulation resistance, the service life that is conducive to realize the large flow circulation of dyeing fluid and extends circulating pump.

4, adopt dyeing machine provided by the invention to carry out textile dyeing, there is simple, the controlled feature of technique; By technological parameters such as reasonable control dyeing Fluid Circulation flow, fabric circulation rate, dyeing temperature and pressure, to realize piece dyeing fabric in supercritical carbon dioxide fluid medium, especially the rope form piece dyeing of light and thin type and yielding fabric is evenly processed, even dyeing effect, reappearance, absorption colourability and the COLOR FASTNESS of dyeing are good, and dyeing quality obviously improves.

Brief description of the drawings

Fig. 1 is the operation principle schematic diagram of the fabrics in roped form dyeing machine taking supercritical carbon dioxide fluid as medium that provides of the embodiment of the present invention;

In figure: 1, kettle; 2, fabric in rope form; 3, besel; 4, gathering hole; 5, selvage guide rope; 6, fabric guide roll; 7, carry cloth wheel; 8, horizontal separate mesh; 9, undaform draws cloth passage; 10, accept webmaster; 11, pyriform separate mesh; 12, heat exchanger; 13,17 and 22, fluid filtering device; 14, circulating pump; 15,18,19,20,23,24,25 and 38, stop valve; 16, entrainer still; 21, dyestuff still; 26, preheating furnace; 27, main pump; 28, condenser storage tank; 29, handpiece Water Chilling Units; 30, water circulating pump; 31, CO ₂gas cylinder; 32, bus-bar; 33, separating still II; 34, scavenging pump; 35, preheater II; 36, separating still I; 37, preheater I; 38, relief valve; 39, fluid intake; 40, fluid issuing.

Detailed description of the invention

Below in conjunction with drawings and Examples, specific embodiment of the invention scheme is further described.

Embodiment 1

Referring to accompanying drawing 1, it is the operation principle schematic diagram of a kind of fabrics in roped form dyeing machine taking supercritical carbon dioxide fluid as medium of providing of the present embodiment; This dyeing machine comprises fabric in rope form shuttling movement selvage guide rope in supercritical fluid dyeing still and still, dyeing fluid circulating system.

Dyeing caldron is taking horizontal cylinder shape high pressure dyeing still as kettle 1, in kettle, top position is provided with selvage guide rod 6 and Ti Bu wheel 7, the centre of kettle 1 is provided with pyriform separate mesh 11, the left side of pyriform separate mesh is provided with the horizontal separate mesh 8 that epirelief perforate are passed through for fabric in rope form, and its right side is provided with undaform and draws cloth passage 9, and accept the common cloth storage trough that forms dyeing machine of webmaster 10 with each separate mesh, the setting of kettle lower half; Be provided with a gathering hole 4 and observation window 3 in the left side of kettle 1, the back upper place of kettle is provided with fluid inlet 39, a below and is provided with outlet 40, and after being connected with fluid filtering device 13, circulating pump 14 by pipeline respectively, connects dyeing fluid circulating system.

In still, fabric in rope form shuttling movement selvage guide rope is an end to end annular pallial siphuncle, traction fabric in rope form completes to be worn cloth and enters cloth, in this process, fabric forms compound ropy together with selvage guide rope simultaneously, and carrying under the effect of cloth wheel 7, through selvage guide rod 6, in the cloth storage trough of traction kettle below, fabric in rope form enters smoothly undaform and draws cloth passage 9, and then enters according to the order of sequence kettle below cloth storage trough, assists fabric in rope form to carry out orderly shuttling movement.

Shown in accompanying drawing 1, the job step of the fabrics in roped form dyeing machine taking supercritical carbon dioxide fluid as medium is opening operation mouth 4, first will be fixed on selvage guide rope with rope form form by dyeing and weaving thing one end, complete and wear cloth and enter cloth work carrying under the active role of cloth wheel 7 and the traction of selvage guide rope, in this process, fabric forms compound ropy together with selvage guide rope simultaneously; After entering cloth and completing, will be sewed up and form ring-type by dyeing and weaving thing head and the tail, after airtight dyeing caldron, carry out well emptying to whole coloring system.Then according to predetermined dyeing processing technique flow process and parameter, start by CO ₂gas cylinder 31, bus-bar 32, condenser storage tank 28, main pump 27, preheating furnace 26 at interior compression system to dyeing caldron supercharging and fluid preheating, and heat up through heat exchanger 12, opening stop valve 23 and/or 19,24, fully dissolves dyestuff or chemicals in it to dyestuff still 21 or 16 superchargings of entrainer still simultaneously.When dyeing caldron internal pressure and temperature reach after predetermined technological requirement, to close main pump 27, and close stop valve 25, opening stop valve 18,24,20 or 15, after pressure balance in coloring system, starts circulating pump 14; Adopt the entrance 39 and outlet 40, fluid filtering device 13, circulating pump 14, heat exchanger 12 and the dyestuff still 21 of parallel/series or the fluid circulating system that entrainer still 16 forms that are communicated with dyeing caldron 1, to dyeing in dyeing caldron 1, fluid upgrades circulation with the flow of regulation, and realize to dissolving dye/chemicals in dyestuff still 21 or entrainer still 16 carry transmission and being uniformly distributed in dyeing caldron, be beneficial to the level dyeing of fabric.

Open and carry cloth wheel system simultaneously, make selvage guide rope and the fabrics in roped form compound linear velocity with regulation, by drawing cloth passage 9, cloth storage trough (Teflon accept webmaster 10, pyriform separate mesh 11, space that laterally separate mesh 8 forms), the DYED FABRICS circulatory system that laterally separate mesh 8, selvage guide rod 6 form to carry cloth wheel 7, undaform, and keep stable well and in an orderly manner running, make DYED FABRICS dye or react with in dissolving dye in dyeing caldron 1 inner fluid or chemicals even contact and absorption.

Fabric is admitted to undaform and draws cloth passage 9 after carrying cloth wheel 7, and undulate is stacked in an orderly manner along dyeing caldron 1 lower half and is on the Teflon webmaster 10 of circumferential arrangement, and push carry cloth to the power of gravity and fluid and take turns 7 below one sides, then carry out dyeing cycle through the castering action of selvage guide rod 6 and Ti Bu wheel 7.Under circulating pump positive action, the interior dyeing fluid of dyeing caldron 1 is through fluid issuing 40, filter device 13, dyestuff still 21 or entrainer still 16, again on carrying not, dyestuff enters dyeing caldron 1 through heat exchanger 12 and fluid intake 39, and fully contacts and dye or react with fabric.Then fluid enters next time circulation by the space of 10 of Teflon webmasters and through circulating pump 14 again, thereby accelerates to dye/react in the even absorption of dissolving dye and fabric fibre in fluid, and the dyeing that jointly completes fabric is processed.

After heat-insulation pressure keeping dyeing is finished dealing with; circulating pump 14 is shut down; open relief valve 38 to coloring system pressure release; utilizing separation and recovery system that the dye well fluid in dye cycle system is separated and reclaimed (is the abundant fabric face loose colour of removing while dying dark heavy colour; can keep circulating pump 14 continuous firings; open compression system simultaneously, utilize fresh fluid to carry out loose colour cleaning).After pressure release finishes, close relief valve 38, then to equipment emptying, then the fast-open type seal cover at start-up operation mouth 4 places goes out cloth.

Go out cloth and finish rear closed system, adopt main pump 27 at interior compression system, with fresh fluid, dyeing caldron and dyeing fluid circulating system are fully cleaned, and separate and reclaim through separation and recovery system.In addition, in the time carrying out colour changing dyeing, except fluid circulating system cleans to dyeing caldron and dyeing, also adopt the Special cleaning pump 34 and the corresponding circuit that are equipped with to clean separation and recovery system, so that adopt separation and recycling after different dyes dyeing processing.

Utilize dyeing installation that the present embodiment provides to the fabric processing of dyeing.What the present embodiment adopted is that (50D/50D low-elasticity terylene fibre, 84.0g/m are spun in terylene spring Asia by dyeing and weaving thing ²), dyestuff used is disperse scarlet S-BWFL (Disperse C.I.Red 74, o.m.f is 0.2%).

Be that 120C, dyeing time are that 2 hours, system pressure are under the condition of 13.9MPa, 30.0Mpa at dye cycle system temperature, fabric is carried out respectively to dye test.

With reference to above-mentioned treatment step and technique, the dacron experimental result after the present embodiment method dyeing processing is as follows:

1. the even dyeing effect of fabric

After the processing of the present embodiment method, the level-dyeing property of fabric adopts the standard deviation δ (λ of the surperficial color depth value (K/S) at the maximum characteristic absorption wavelength of DYED FABRICS place _max) weigh, its computing formula is:

$\mathrm{\δ}\left({\mathrm{\λ}}_{\max }\right)=\sqrt{\frac{\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{[{(K/S)}_{i,{\mathrm{\λ}}_{\max }}-\stackrel{\‾}{{(K/S)}_{{\mathrm{\λ}}_{\max }}}]}^2}{n-1}}$

In formula:

δ (λ _max) be the standard deviation of the each sample point K/S of place value and sample mean in DYED FABRICS;

λ _maxfor the maximum characteristic absorption wavelength of DYED FABRICS;

N is the total degree (n=20) of dyeing cloth specimen head, tail, limit, the measurement of medium different parts;

for at the maximum characteristic absorption wavelength (λ of place _max) i measurement (the automatic color measurement and color match instrument test of employing Ultrascan PRO type, HunterLab.Ltd, the U.S.; Folding 8 layers of sample) surperficial color depth value (K/S value);

for sample

mean value (being respectively the arithmetic mean of instantaneous value at head, tail, limit, the medium place 20 times of DYED FABRICS positive and negative).

Due to δ (λ _max) represent that each sample point surface color depth (K/S) value departs from the degree of its mean value, thereby can be used to characterize the level-dyeing property of cloth cover, wherein δ (λ _max) value less, even dyeing effect is better.

Table 1 is the method adopting described in the present embodiment, terylene spring Asia is spun to adopt disperse scarlet S-BWFL(o.m.f be 0.2%) experimental result that dye under different pressures condition and process.

Table 1

Test result as shown in Table 1 can be found out, through the dacron of the present embodiment method dyeing processing, the standard deviation δ (λ of the surperficial color depth value (K/S) at its maximum characteristic absorption wavelength place _max) value less, the level-dyeing property of the positive and negative cloth cover of DYED FABRICS is good; Table 1 also shows that its level-dyeing property can further improve along with system pressure increases simultaneously.In addition DYED FABRICS under each pressure condition,

test result also shows, along with pressure increases, can make the tinctorial yield on fabric increase, and obtains denseer color and luster.Owing to increasing with pressure, the density of supercritical carbon dioxide fluid increases, and more abundant to dyestuff dissolving, the dye strength that is solubilised state is also corresponding higher, and fluid distributes also more evenly in dyeing caldron, thereby the level-dyeing property of product dyed thereby and surperficial color depth value are also improved.

Embodiment 2

The present embodiment adopts disperse scarlet S-BWFL(Disperse C.I.Red 74, and o.m.f is 0.2%) (50D/50D low-elasticity terylene fibre, 84.0g/m are spun in terylene spring Asia ²), the processing of dyeing; Dyeing condition is that 14.5MPa supercritical carbon dioxide fluid, dyeing temperature are that 120 DEG C, dyeing fluid flow are that 25.0L/min, dyeing time are 2h, and fabric circulation rate is respectively 2m/min, 50m/min, 200m/min.

Press the method for embodiment 1, the processing of dyeing respectively under above-mentioned different circulation rate conditions is spun in terylene spring Asia and process, its concrete steps and other condition are as described in Example 1.

Table 2 is the methods that adopt described in the present embodiment, terylene spring Asia is spun to adopt disperse scarlet S-BWFL(o.m.f be 0.2%) experimental result that dye and process under the different circulation rate conditions of fabric.

Table 2

Data as shown in Table 2 can see, while bringing up to 50m/min along with DYED FABRICS circulation rate from 2m/min, and the standard deviation δ (λ of the surperficial color depth value (K/S) at maximum characteristic absorption wavelength place on fabric _max) obviously reduction of value appearance, showing that head, tail, limit, the middle color and luster uniformity of product dyed thereby positive and negative obtains larger raising, when range estimation, whole cloth complexion pool is evenly.And further bring up to 200m/min with fabric circulation rate, the standard deviation δ (λ of fabric face color depth value (K/S) _max) value is without obviously reducing, on fabric, the color and luster at each position is very even.

Meanwhile, table 2 also shows, in the present embodiment, the circulation rate of fabric is less on surperficial color depth value (K/S) impact at maximum characteristic absorption wavelength place on fabric, shows that fabrics in roped form dyeing machine of the present invention and colouring method thereof have good reproducibility.

Embodiment 3

The present embodiment adopts disperse scarlet S-BWFL(Disperse C.I.Red74, and o.m.f is 0.2%) (50D/50D low-elasticity terylene fibre, 84.0g/m are spun in terylene spring Asia ²), the processing of dyeing; Dyeing condition is that 14.5MPa supercritical carbon dioxide fluid, dyeing temperature are 120, dyeing time is that 2h, fabric in rope form circulation rate are 56m/min, and dyeing Fluid Circulation flow is respectively 1L/min, 30L/min, 500L/min.

Press the method for embodiment 1, the processing of dyeing respectively under above-mentioned different circular flow conditions is spun in terylene spring Asia and process, its concrete steps and other condition are as described in Example 1.

Table 3 is the methods described in employing the present embodiment, and it is 0.2% that employing disperse scarlet S-BWFL(o.m.f is spun in terylene spring Asia) in the experimental result that dyes and dye and process under fluid difference circular flow conditions.

Table 3

Data as shown in Table 3 can see, with the increase of tinction Fluid Circulation flow, and the standard deviation δ (λ of the surperficial color depth value (K/S) at maximum characteristic absorption wavelength place on fabric _max) value declines obviously, shows to increase dyeing Fluid Circulation flow, can significantly improve head, tail, the limit of product dyed thereby positive and negative, the color and luster uniformity at middle position.When dyeing Fluid Circulation flow exceedes after 30L/min, on fabric, the color and luster at each position is very even, its standard deviation δ (λ _max) value change not obvious.

Table 3 also shows simultaneously, and dyeing Fluid Circulation flow on surperficial color depth value (K/S) impact of fabric significantly.Due in the time that other condition is identical, increase dyeing Fluid Circulation flow can effectively carry more dissolving dye and enter dyeing caldron, strengthened the relative motion of fabric and fluid simultaneously, accelerate the transmission of dissolving dye and exchange in fiber surface, diffusion boundary layer and body of fluid on fabric, dyed thereby improved in the absorption of dyestuff on fiber.

Embodiment 4

The present embodiment adopts disperse scarlet S-BWFL(Disperse C.I.Red74, and o.m.f is 0.2%) (50D/50D low-elasticity terylene fibre, 84.0g/m are spun in terylene spring Asia ²), the processing of dyeing; Dyeing condition is that 20MPa supercritical carbon dioxide fluid, dyeing time are that 2h, fabric in rope form circulation rate are 56m/min, and dyeing Fluid Circulation flow is respectively 30L/min, dyeing temperature is respectively 100 DEG C, 120 DEG C, 130 DEG C.

Press the method for embodiment 1, the processing of dyeing respectively under above-mentioned coloured differently temperature conditions is spun in terylene spring Asia and process, its concrete steps and other condition are as described in Example 1.

Table 4 is the methods that adopt described in the present embodiment, terylene spring Asia is spun to adopt disperse scarlet S-BWFL(o.m.f be 0.2%) experimental result that dye under condition of different temperatures and process.

Table 4

Data as shown in Table 4 can be seen, along with dyeing temperature rising, the standard deviation δ (λ of fabric face color depth value (K/S) _max) be worth decline obviously, show suitably to improve dyeing temperature, also can play and improve the inhomogeneity effect of DYED FABRICS color and luster.

Table 4 also shows simultaneously, and while bringing up to 120 DEG C with tinction from 100 DEG C, obviously increasing appears in the surperficial color depth value (K/S) of fabric; And while continuing rising dyeing temperature to 130 DEG C, reducing appears in the surperficial color depth value (K/S) of fabric.Owing to suitably improving dyeing temperature, be conducive to the motion of fiber macromolecular chain segment, increase the accessibility of dyestuff, dye in intrastitial diffusion thereby also improved dyestuff.But be exothermic process owing to dying on dyestuff, so continuation rising dyeing temperature does not utilize the raising of dyestuff dye-uptake on the contrary.

Embodiment 5

The present embodiment adopts disperse scarlet S-BWFL(Disperse C.I.Red74, and o.m.f is 0.2%) (50D/50D low-elasticity terylene fibre, 84.0g/m are spun in terylene spring Asia ²), the processing of dyeing; Dyeing condition is that 20MPa supercritical carbon dioxide fluid, dyeing temperature are respectively 130, fabric in rope form circulation rate is 56m/min, and dyeing Fluid Circulation flow is respectively 30L/min, and dyeing time is 20min, 60min, 300min.

Press the method for embodiment 1, the processing of dyeing respectively under above-mentioned different time condition is spun in terylene spring Asia and process, its concrete steps and other condition are as described in Example 1.

Table 5 is the methods that adopt described in the present embodiment, terylene spring Asia is spun to adopt disperse scarlet S-BWFL(o.m.f be 0.2%) experimental result that dye under different time condition and process.

Table 5

Data as shown in Table 5 can see, even in the shorter dyeing time of 20min, fabric still can obtain good even dyeing effect; And while extending to 60min along with dyeing time, in DYED FABRICS, the standard deviation of the each sample point K/S of place value and sample mean further reduces, and can obtain desirable color and luster uniformity on fabric; In the time that dyeing time continues to extend to 300min, its δ (λ _max=510nm) value change less.This shows that proper extension dyeing time within the specific limits can be conducive to improve the level-dyeing property of fabric.And a larger increase appearred while extending to 60min with dyeing time by 20min in the surperficial color depth value of DYED FABRICS, while continuing to extend dyeing time, fabric face color depth value increases less, and this shows that dyeing time has been tending towards dyeing equilibrium state after 60min.Due to proper extension dyeing time, be conducive to moving of dyestuff on fiber and dye, and fiber surface absorbing dye fully spreads and set to fibrous inside, thereby its level-dyeing property and surperficial color depth value can further improve.

As can be seen from the above-described embodiment, the present invention is arranged in dyeing kettle owing to carrying cloth wheel system, and jointly drive fabric in rope form shuttling movement by the draw of selvage guide rope, save complicated nozzle system, thereby shortened fabric shuttling movement loop, and alleviate the load of circulating pump, can effectively reduce device fabrication cost and system sealing and designing requirement, and be conducive to realize the miniaturization of change system, improve its practicality and durability.The suitable fabrics variety range of device systems is wide simultaneously, is particularly suitable for again the supercritical fluid rope form piece dyeing dyeing of light and thin type and yielding textiles.In addition colouring method provided by the invention and rationally control every dyeing and also improved the uniformity of fabric processing.Thereby compared with prior art, rope dyeing machine and the colouring method taking supercritical carbon dioxide fluid as medium of the present invention, has more practicality, its design, manufacture and use are more easy, thereby its application prospect is more wide.

Claims (3)

1. a method for the dyeing of the fabrics in roped form taking supercritical carbon dioxide fluid as medium, is characterized in that, comprises the steps:

(1) will be fixed on selvage guide rope with rope form form by dyeing and weaving thing one end, and wear cloth and enter cloth carrying under the active role of cloth wheel and the traction of selvage guide rope;

(2) will be sewed up by dyeing and weaving thing head and the tail, form ring-type;

(3) after airtight dyeing caldron, carry out emptying to whole coloring system; Adopt force (forcing) pump to coloring system supercharging, in the supercritical carbon dioxide fluid medium that is 1L/min～500L/min at Fluid Circulation flow, depended on selvage guide rope by dyeing and weaving thing and form fabric in rope form, selvage guide rope is through carrying cloth wheel and fabric guide roll, traction kettle bottom is accepted fabric in rope form in webmaster and is entered undaform and draw cloth passage, enter the webmaster of accepting of kettle bottom, selvage guide rope and the fabric in rope form cloth speed with 2m/min～200m/min in kettle is made upper and lower shuttling movement again, to the fabric processing of dyeing;

The fabrics in roped form dyeing machine using comprises supercritical fluid dyeing still, dyeing fluid circulating system, and described supercritical fluid dyeing still comprises kettle (1), carries cloth apparatus, cloth storage trough and selvage guide rope (5); Kettle (1) is horizontal cylinder shape high pressure dyeing still; In the chamber of kettle (1), centre is provided with pyriform separate mesh (11); Carry cloth apparatus and comprise that carrying cloth takes turns (7) and fabric guide roll (6), carry cloth wheel (7) and be located at the top in kettle (1) chamber, fabric guide roll (6) is arranged on a side of carrying cloth wheel (7) side-lower, pyriform separate mesh (11); Cloth storage trough comprises horizontal separate mesh (8), accepts webmaster (10), pyriform separate mesh (11) bottom and undaform draw the space that cloth passage (9) forms, laterally separate mesh (8) is arranged on a side of pyriform separate mesh (11), undaform draws cloth passage (9) and is located at the opposite side of pyriform separate mesh (11), accepts webmaster (10) and be located at the bottom of kettle (1); Kettle (1) is provided with gathering hole (4) and observation window (3); The top of kettle is provided with fluid inlet (39), and the below of kettle is provided with fluid issuing (40), and fluid inlet (39) is connected with dyeing fluid circulating system by pipeline respectively with fluid issuing (40); Described selvage guide rope (5) is end to end annular pallial siphuncle, depended on selvage guide rope (5) by dyeing and weaving thing and form fabric in rope form, selvage guide rope (5) is through carrying cloth wheel (7) and fabric guide roll (6), traction kettle bottom is accepted fabric in rope form in webmaster (10) and is entered undaform and draw cloth passage (9), what enter kettle bottom accepts webmaster (10) again, and selvage guide rope (5) and fabric in rope form are made upper and lower shuttling movement in kettle.

2. the method for a kind of fabrics in roped form dyeing taking supercritical carbon dioxide fluid as medium according to claim 1, is characterized in that: the dyeing temperature in dyeing caldron is 100 DEG C～160 DEG C, and pressure is 9 MPa～30MPa.

3. the method for a kind of fabrics in roped form taking supercritical carbon dioxide fluid as medium dyeing according to claim 1, is characterized in that: to dye time of processing of fabric be 20 min～300min.

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