CN103866441A - Method for producing multicolor section color yarn and drawing frame device - Google Patents

Method for producing multicolor section color yarn and drawing frame device Download PDF

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Publication number
CN103866441A
CN103866441A CN201410114771.3A CN201410114771A CN103866441A CN 103866441 A CN103866441 A CN 103866441A CN 201410114771 A CN201410114771 A CN 201410114771A CN 103866441 A CN103866441 A CN 103866441A
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yarn
rove
color
section coloured
roller
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CN103866441B (en
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何卫民
宋祖龙
张太顺
管永桂
刘涛
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ZHEJIANG HUAFU MELANGE YARN CO Ltd
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ZHEJIANG HUAFU MELANGE YARN CO Ltd
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Abstract

The invention discloses a method for producing multicolor section color yarn. Main color rough yarn and secondary color rough yarn are adopted to be spun on a three-roller ring spinning section color yarn spinning frame, so that the multicolor section color yarn is obtained. The main color rough yarn is continuously fed in from a middle-roller horn mouth, the secondary color rough yarn is continuously fed in from a rear-roller horn mouth, pre-drawing strips with two or more colors are adopted for the secondary color rough yarn and fed into a cotton-feed roller of a drawing frame in parallel when the drawing procedure is carried out for combination, pre-drawing strips of the same color are concentrated and fed into the cotton-feed roller of the drawing frame in parallel, then the yarn roughing procedure is carried out on the pre-drawing strips, and accordingly the single multicolor secondary color rough yarn is formed. A traditional three-roller ring spinning section color yarn spinning frame is adopted in the method, multicolor section color yarn products with different effects can be produced without the need of improving spinning equipment any more, industrialization and mass production of the multicolor section color yarn products can be achieved through the production method, and cost of manpower and material resources is saved.

Description

A kind of method and drawing frame device of producing polychrome section coloured yarn
Technical field
The look that the present invention relates to weave spins field, relates in particular to a kind of method of producing polychrome section coloured yarn.
Background technology
In recent years, along with the continuous increase of people to fashion-orientation, customized clothing demand, cotton spinning fancy yarn becomes an important branch in textile industry, extensively receive people's concern, especially the polychrome section coloured yarn of Development and Production in recent years, meet the requirement of modern people's personalization, differentiation, fashion-orientation, enjoyed people to like.
But, the polychrome section coloured yarn on market, not only production equipment complex structure, transformation difficulty is large, and adopts many rove or long filament to produce, and workman's production operation difficulty is large, constant product quality is poor, cost is high, and product industrialization batch production is very restricted.
For example domestic applications number are the spinning method that 2013103333469 patent discloses a kind of multicomponent Multicolor segments color yarn, its technique is to adopt the rove of three at least one colors and a kind of material to feed the super draft fine spining machine of four roller four apron three district's drawing-off forms at spinning process simultaneously, the RING SPINNING super draft four roller section coloured yarn equipment that it adopts, complex structure, very inconvenient in maintenance and production, man power and material's cost is high, and industrialization production application difficulty is large in batches; And it adopts three rove to do polychrome section coloured yarn, wherein one is mass-tone rove, two is auxiliary look rove, the technique of producing for three rove, its production operation complexity, a workman will look after several machines simultaneously, is easy to occur quality problems, thereby its commercial application is restricted.Domestic applications number are that 2013201837758 utility model patent discloses embedded section of color spinning apparatus of a kind of multicolour, it is mainly four feeding rollers that adopt servomotor drive, form draw zone with front roller, negative tube in draw zone, the negative pressure that grid ring and grid ring transmission roller form rove bar grips and smooth travel mechanism, by Computerized controller control feeding roller, realize feeding at intermittence and the drawing-off of four rove bar fibers, utilize in the twisted of two threads and twisted process the revolution of self, each fiber strip of segmentation output is twisted into and is closed in twist yarn, realize embedded section of color spinning of multicolour, but embedded section of color spinning apparatus there is no industrialization mass production applications, because its equipment is very complicated, difficult in maintenance, in production process, workman's operation easier is large, and output is lower.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of production method of polychrome section coloured yarn is provided, thereby realize the large-scale industrialization high quality of production of polychrome section coloured yarn.
For achieving the above object and other object, the present invention adopts following technical scheme to realize:
A kind of method of producing polychrome section coloured yarn, adopt a mass-tone rove and an auxiliary look rove to spin on three roller RING SPINNING section coloured yarn fine spining machines, mass-tone rove feeds continuously from middle roller horn mouth, auxiliary look rove intermittently feeds from rear roller horn mouth, two kinds described of auxiliary look rove employings or the pre-drawing of two or more colors, and described pre-drawing carries out and closes to cotton roller mixing in doubling step parallel feeding drawing frame of while, the pre-drawing of same color concentrate parallel feeding drawing frame to cotton roller, again through Roving Frames, form the auxiliary look rove of single and polychrome.
In the present invention, auxiliary look rove and mass-tone rove all adopt and distribute cotton, grab cotton, mixed cotton, opener, rolling, comb and parallel cotton fibers prior to spinning, drafting, Roving Frames, and mass-tone rove and auxiliary look rove spin and make final Multicolor segments color yarn on three roller RING SPINNING section coloured yarn fine spining machines of spinning process.Innovative point of the present invention is the innovation and application of auxiliary look rove production technology, be specially the pre-drawing of two kinds of auxiliary look rove employings or two or more colors, and described pre-drawing carries out and closes to cotton roller mixing in doubling step parallel feeding drawing frame of while, through Roving Frames, form the auxiliary look rove of single and polychrome again.There are 2 kinds or two or more color in the cross section of the auxiliary look rove of being produced by said method of the present invention, and same color is concentrated distribution.
The three roller ring ingot colorful yarn fine spining machines that adopt in the present invention, are on three traditional roller ring spinning frames, add the color plant modification of section and form, and spinning in industry at the look of weaving is particularly routine or prior art.
In the present invention, the spun yarn production technology schematic diagram of above-mentioned production polychrome section coloured yarn as shown in Figure 6.Particularly, mass-tone rove 1 enters middle horn mouth 6 through lever jack 3, auxiliary look rove through lever jack 3 and after after horn mouth 4, rear roller 5 and with mass-tone rove at middle horn mouth 6 and close, then common after the drawing-off effect of middle roller 7 and front roller 8, under twisting effect, be wound into cop 10 through twizzle 9.In this process, fine spining machine equipment installs the technological parameter runnings such as fixed pitch, joint length, gearratio, spinning pattern and produces according to section color equipment.Wherein pitch represents that rear roller stops operating, and auxiliary look rove stops feeding, and mass-tone rove is the length of yarn of spinning separately; Joint is long represents that rear roller starts to rotate, after auxiliary look rove feeding, and the length of the common spinning of auxiliary look rove and mass-tone rove; Gearratio represents that front roller is to the gearratio between rear roller control motor, the speed of rotating for controlling rear roller.As gearratio 0.35, represent that front roller rotates 1 circle, rear roller control electric machine rotation 0.35 encloses; Spinning pattern has " rule is spun " and " fuzzy spinning " two options, and " rule is spun " represents to produce by group in order from first group of pitch, joint long parameter, and " fuzzy spinning " randomly drawed one group and produced representing that many groups pitch, the joint from setting is long.
Particularly, when polychrome section coloured yarn product is three kinds of colors, mass-tone rove is a kind of color, the pre-drawing of auxiliary look rove adopts the technique parallel feeding drawing frame simultaneously of mA+nB, be m root A color pre-drawing and the n root B color pre-drawing parallel cotton roller that is feeding to simultaneously, m root A color pre-drawing is distributed in cotton guiding plate one side, concentrates parallel feeding; N root B color pre-drawing is distributed in cotton guiding plate opposite side, and each color pre-drawing is concentrated parallel feeding, and wherein, A, B represent respectively the pre-drawing of different colours, and different from mass-tone rove color, and m, n are positive integer, and m and n sum are 6~8.
Preferably, when polychrome section coloured yarn product is three kinds of color section coloured yarns, the drawing process of auxiliary look rove adopts 4A+4B's and closes technique.The i.e. cotton roller of giving of 4 A color pre-drawings and 4 parallel feeding drawing frames of B color pre-drawings while, wherein 4 A color pre-drawings are distributed in cotton guiding plate one side, concentrate parallel feeding; 4 B color pre-drawings are distributed in cotton guiding plate opposite side, and each color pre-drawing is concentrated parallel feeding.Particularly, when polychrome section coloured yarn product is four kinds of colors, adopt the technique of mA+nB+eC by pre-drawing parallel feeding drawing frame simultaneously, i.e. m root A color pre-drawing, n root B color pre-drawing and the e root C color pre-drawing parallel cotton roller that is feeding to simultaneously.Three kinds of color pre-drawings are concentrated parallel feeding, as adopt m root A color pre-drawing to be positioned at the left side of cotton guiding plate, centre that n root B color pre-drawing is positioned at cotton guiding plate and e root C color pre-drawing to be positioned at the right side of cotton guiding plate and the pre-drawing of the three kinds of colors parallel cotton roller that is feeding to simultaneously.Wherein, m, n, e are positive integer, and m, n, e sum are the pre-drawing that 6~8, A, B, C represent respectively different colours, and different from mass-tone rove color.
Preferred four kinds of color section coloured yarns, the drawing process of auxiliary look rove adopts 2A+2B+2C's and closes technique.I.e. 2 A color pre-drawings, 2 B color pre-drawings and 2 C color pre-drawings; Each color pre-drawing simultaneously parallel feeding drawing frame give cotton roller.
According to the above-mentioned disclosed technical scheme of the present invention the like, can also obtain four kinds of section coloured yarn lines more than color.
Core of the present invention is that the auxiliary look rove drafting production technology of section coloured yarn is innovated.By changing drawing spinning yarn process, reach and subdue the mixed effect of mixing in doubling step to different colours pre-drawing, retain its drawing-off and amalgamation to different colours pre-drawing, make the auxiliary look rove cross section being spun into present 2 kinds or two or more color, and same color is concentrated distribution.In the present invention, the schematic diagram in the cross section of the auxiliary look rove of polychrome as shown in Figure 1, Figure 2, Figure 3 shows.
Preferably, described mass-tone rove be quantitatively 2.5 grams/10 meters~10.0 grams/10 meters, the twist is 20 twists/m~80 twists/m.
Preferably, described auxiliary look rove be quantitatively 2.5 grams/10 meters~10.0 grams/10 meters, the twist is 20 twists/m~80 twists/m.
Preferably, the pre-drawing of described auxiliary look rove is quantitatively 10 grams/5 meters~36 grams/5 meters.
Preferably, the radical of the pre-drawing of described auxiliary look rove is 6-8 root.
The invention also discloses a kind of drawing frame of producing polychrome section coloured yarn, comprise drawing frame body, described drawing frame body comprises cotton guiding plate, additional parting bead device for interval different colours pre-drawing is installed on described cotton guiding plate, and described additional parting bead device is provided with at least one parting bead for interval different colours pre-drawing.This additional parting bead apparatus structure is simple, uses after parting bead apparatus structure, the pre-drawing of same color can be concentrated and is held in place in same interval section, and the pre-drawing of different colours keeps a determining deviation parallel cotton roller that is feeding to simultaneously.Use the technique described in this additional parting bead device and the present invention, can effectively subdue the mixed effect of mixing in doubling step to different colours pre-drawing, retain drawing-off and the amalgamation of mixing in doubling step to different colours pre-drawing.
Preferably, described parting bead is selected from the one in column type, cubic type and elliptic cylinder.
More preferably, described parting bead is elliptic cylinder.The additional parting bead device of described elliptic cylinder can be along rotation in the plane parallel with cotton guiding plate, by regulating the anglec of rotation of the additional parting bead device of elliptic cylinder to regulate the parallel distance of different colours pre-drawing in the time feeding.
Preferably, described parting bead is one or more.
Preferably, described parting bead has two at least, and perpendicular to the parallel distribution of pre-drawing feeding direction.
Fig. 4 is Multicolor segments color yarn mixing in doubling step schematic diagram in the present invention, particularly, the pre-drawing 7 of different colours, from sliver can 8, draw, through guide strip rack 6, cotton guiding plate, conducting bar roller, parting bead device (specifically seeing figure five parts), then the draw zone 2 forming via rear roller 5, middle roller 4, front roller 3, make last drafting 1, be wound in sliver can.
Fig. 5 is the schematic diagram of the additional parting bead device in the present invention, particularly, perpendicular to pre-drawing feeding direction, be installed in parallel in on the cotton guiding plate after cotton roller, make the pre-drawing of the different colours that is feeding to cotton roller, keep a determining deviation parallel cotton roller that is feeding to simultaneously.Cotton guiding plate is after cotton roller, and structure is a plane, and sliver is from it through being feeding to cotton roller.If no special instructions, conventional spinning technique in the process using prior art in other spinning process in the present invention.
According to the above-mentioned disclosed method of the present invention, those skilled in the art can, according to the style of required polychrome section coloured yarn, arrange yarning process parameter.According to different parameters and technique, can produce the polychrome section coloured yarn yarn with various different-effects, the change color of obtained yarn is more various, more bright and colourful with the color effect of the thread fabric of described yarn.
The invention also discloses a kind of polychrome section coloured yarn yarn, method described above makes, and the number of described polychrome section coloured yarn yarn is 6tex~100tex, and the twist is 250~2000T/m.Adopt method in the present invention, the multiple weaving composition yarn such as can produce cotton, wash, glue.
Above-mentioned disclosed technical scheme in the present invention, is used three roller RING SPINNING section coloured yarn fine spining machines productions to overcome the large-scale industrialization production difficulty that uses other spun yarn device fabrication polychrome section coloured yarn yarn to cause large, the defect that manpower and materials cost is high.Compared with the technique of disclosed production polychrome section coloured yarn yarn in prior art, there is equipment simple, production operation is convenient, the good and advantage that saves production cost of constant product quality.
Brief description of the drawings
Fig. 1 is the schematic cross-section of two kinds of auxiliary look rove of color; In Fig. 11 and 2 represents respectively two kinds of different colours.
Fig. 2 is the schematic cross-section of three kinds of auxiliary look rove of color; In Fig. 2,1,2 and 3 represent respectively three kinds of different colours.
Fig. 3 is the schematic cross-section of four kinds of auxiliary look rove of color; In Fig. 31,2,3 and 4 represents respectively four kinds of different colours.
Fig. 4 is polychrome section coloured yarn yarn mixing in doubling step schematic diagram in the present invention;
Wherein in Fig. 4:
1 is last drafting;
2 is drafting draw zone;
3 is front roller;
4 is middle roller;
5 is rear roller;
6 is guide strip rack;
7 is pre-drawing;
8 is sliver can.
Fig. 5 is the schematic diagram of the additional parting bead device in the present invention; It is the schematic diagram of a-quadrant in Fig. 4;
Wherein in Fig. 5:
1 is to cotton roller;
2 is additional parting bead device;
3 is a color pre-drawing;
4 is b color pre-drawing;
5 is c color pre-drawing;
6 is d color pre-drawing, and wherein a, b, c and d are different colours.
Fig. 6 is that the spun yarn of polychrome section coloured yarn in the present invention is produced schematic diagram;
Wherein in Fig. 6:
1 is the auxiliary look rove of polychrome;
2 is mass-tone rove;
3 is lever jack;
4 is rear horn mouth;
5 is rear roller;
6 is middle horn mouth;
7 is middle roller;
8 is front roller;
9 is twizzle;
10 is cop.
Fig. 7 is polychrome section coloured yarn fabric style in embodiment 1.
Fig. 8 is polychrome section coloured yarn fabric style in embodiment 2.
Fig. 9 is polychrome section coloured yarn fabric style in embodiment 3.
Detailed description of the invention
Below, by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this description.The present invention can also be implemented or be applied by other different detailed description of the invention, and the every details in this description also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
Embodiment 1
Mass-tone rove adopts white raw cotton, and regular roving feeding adopts 5.2 grams/10 meters.Auxiliary look rove, the red cotton, the blue cotton that adopt dyeing to process, pass through blowing, comb and parallel cotton fibers prior to spinning, pre-and operation separately, produces red pre-drawing and blue pre-drawing.
Secondly, at mixing in doubling step, adopt the technique of 4A+4B, 4 red slivers and 4 blue slivers parallel cotton rollers that are feeding to simultaneously, and concentrate and be distributed in cotton guiding plate one side when 4 red sliver feedings, when 4 blue slivers feedings, concentrate and be distributed in cotton guiding plate opposite side, finally form the cross section effect of auxiliary look rove as shown in Figure 1, and what close rear sliver is quantitatively 20.5 grams/5 meters.
Then, on traditional roving frame equipment, spin auxiliary look rove, regular roving feeding is 5.2 grams/10 meters, 51 twists/m of roving twist.Finally, white mass-tone rove, the double-colored auxiliary look rove of red indigo plant spin on traditional three roller RING SPINNING section coloured yarn spinning machines.It is as shown in table 1 below that section color equipment is put setting parameter; Other parameters are if drawing-off, the twist and coiling parameter are with conventional spinning technique.In table 1, pitch, joint length represent that meaning is as follows: mass-tone rove spins separately after 750mm, auxiliary look rove feeding and mass-tone rove spinning spinning 120mm jointly.Four groups of pitches are long with joint, under the fuzzy spinning pattern of spinning, carry out successively at random.
Table 1
The final yarns product obtaining in the present embodiment is the section coloured yarn of three kinds of colors, and it has white, redness, blue three kinds of colors, and as night in red-letter day, burst forth in the multicoloured fireworks night sky.As shown in Figure 7.
Embodiment 2
Mass-tone rove adopts white raw cotton, and mass-tone regular roving feeding adopts 5.2 grams/10 meters.The employing of auxiliary look rove dye red cotton, blue cotton, the yellow cotton of processing, pass through blowing, comb and parallel cotton fibers prior to spinning, pre-and operation separately, produces red pre-drawing, blue pre-drawing and yellow pre-drawing.
Then, at mixing in doubling step, adopt 2A+2B+2C technique, adopt 2 red pre-drawings, 2 blue pre-drawings and 2 yellow pre-drawings parallel cotton rollers that are feeding to simultaneously, and same color pre-drawing is concentrated and is distributed on cotton guiding plate, particularly, the additional parting bead device of elliptical cylinder-shape is installed on the cotton guiding plate between 2 red pre-drawings, 2 blue pre-drawings and 2 yellow pre-drawings, after mixing in doubling step, be made into and have ripe of three kinds of colors, ripe quantitatively adopts 20.5 grams/5 meters.The final auxiliary look rove cross section effect forming as shown in Figure 2.
Then, on traditional Speed frames equipment, the auxiliary look rove of spinning polychrome, regular roving feeding adopts 5.2 grams/10 meters, 51 twists/m of roving twist.
Finally, white mass-tone rove and three looks auxiliary look rove spins on traditional three roller RING SPINNING section coloured yarn equipment.It is as shown in table 2 that section color equipment is put setting parameter.Drawing-off, the twist, coiling parameter are with conventional spinning technique.
Table 2
The polychrome section coloured yarn that Development and Production goes out, has white, redness, blueness, yellow four kinds of colors, and becomes point-like, sheet to distribute, as the aerial bright cloud in sky, rosy clouds.As shown in Figure 8.
Embodiment 3
Mass-tone rove adopts white raw cotton, and regular roving feeding adopts 5.2 grams/10 meters.Auxiliary look rove, the red cotton, blue cotton, yellow cotton, the green cotton that adopt dyeing to process, pass through blowing, comb and parallel cotton fibers prior to spinning, pre-and operation separately, produces red pre-drawing, blue pre-drawing, yellow pre-drawing and green pre-drawing.
Then, at mixing in doubling step, adopt the technique of 2A+2B+2C+2D, i.e. 2 red pre-drawings, 2 blue pre-drawings, 2 yellow pre-drawings and 2 green pre-drawings parallel cotton rollers that are feeding to simultaneously, wherein, same color pre-drawing is concentrated and is distributed on cotton guiding plate, is made into and has ripe of four looks after mixing in doubling step, and ripe quantitatively adopts 20.5 grams/5 meters.
Then, on traditional Speed frames equipment, the auxiliary look rove of spinning polychrome, regular roving feeding adopts 5.2 grams/10 meters, 51 twists/m of roving twist.
Finally, white mass-tone rove and four looks auxiliary look rove spins on traditional three roller RING SPINNING section coloured yarn equipment.It is as shown in table 3 that section color equipment is put setting parameter.Drawing-off, the twist, coiling parameter are with conventional spinning technique.
Table 3
The polychrome section coloured yarn that Development and Production goes out, has white, redness, blueness, yellow, green five kinds of colors, and distributes into strips, as the rain aerial rainbow day after tomorrow, bright and colourful.As shown in Figure 9.
In sum, in the inventive method prior art, the technique of disclosed production polychrome section coloured yarn yarn is compared, there is equipment simple, production operation is convenient, good and the advantage of having saved production cost of constant product quality, so the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.

Claims (9)

1. produce the method for polychrome section coloured yarn for one kind, adopt a mass-tone rove and an auxiliary look rove to spin on three roller RING SPINNING section coloured yarn fine spining machines, mass-tone rove feeds continuously from middle roller horn mouth, auxiliary look rove intermittently feeds from rear roller horn mouth, it is characterized in that, two kinds described of auxiliary look rove employings or the pre-drawing of two or more colors, and described pre-drawing carries out and closes to cotton roller mixing in doubling step parallel feeding drawing frame of while, the pre-drawing of same color concentrate parallel feeding drawing frame to cotton roller, and then through Roving Frames, form the auxiliary look rove of single and polychrome.
2. the method for production polychrome section coloured yarn as claimed in claim 1, is characterized in that, described mass-tone rove be quantitatively 2.5 grams/10 meters~10.0 grams/10 meters, the twist is 20 twists/m~80 twists/m.
3. the method for production polychrome section coloured yarn as claimed in claim 1, is characterized in that, described auxiliary look rove be quantitatively 2.5 grams/10 meters~10.0 grams/10 meters, the twist is 20 twists/m~80 twists/m.
4. the method for production polychrome section coloured yarn as claimed in claim 1, is characterized in that, the pre-drawing of described auxiliary look rove be quantitatively 10 grams/5 meters~36 grams/5 meters.
5. the method for production polychrome section coloured yarn as claimed in claim 1, is characterized in that, the radical of the pre-drawing of described auxiliary look rove is 6-8 root.
6. produce the drawing frame of polychrome section coloured yarn for one kind, comprise drawing frame body, described drawing frame body comprises cotton guiding plate, it is characterized in that, additional parting bead device for interval different colours pre-drawing is installed on described cotton guiding plate, and described additional parting bead device is provided with at least one parting bead for interval different colours pre-drawing.
7. the drawing frame of production polychrome section coloured yarn as claimed in claim 6, is characterized in that, described parting bead is selected from the one in column type, cubic type and elliptic cylinder.
8. the drawing frame of production polychrome section coloured yarn as claimed in claim 6, is characterized in that, described parting bead has two at least, and perpendicular to the parallel distribution of pre-drawing feeding direction.
9. a polychrome section coloured yarn yarn, is characterized in that, is made by the method as described in claim as arbitrary in claim 1-5, and the number of described polychrome section coloured yarn yarn is 6tex~100tex, and the twist is 250~2000T/m.
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CN104452005A (en) * 2014-11-20 2015-03-25 南通金驰机电有限公司 AB multi-color section color control transmission device and AB multi-color section color spinning technology
CN104389064A (en) * 2014-11-22 2015-03-04 江苏康妮集团公司 Gradual change colorful yarn production technology
CN106283304A (en) * 2016-08-10 2017-01-04 浙江华孚色纺有限公司 A kind of drawing frame device producing colour-spun yarns and colour-spun yarns and production method
CN106283304B (en) * 2016-08-10 2018-12-07 浙江华孚色纺有限公司 A kind of drawing frame device producing colour-spun yarns and colour-spun yarns and production method
CN110499562A (en) * 2018-05-16 2019-11-26 浙江华孚色纺有限公司 A kind of segmentation corrugation blended color spinning yarn and its production method
CN110499562B (en) * 2018-05-16 2022-07-12 浙江华孚色纺有限公司 Sectional wrinkling color-mixed spinning yarn and production method thereof

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