CN204401204U - A kind of double-contracting structure melange yarn - Google Patents
A kind of double-contracting structure melange yarn Download PDFInfo
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Abstract
The utility model discloses a kind of double-contracting structure melange yarn, comprise heart yarn, wherein, be provided with outsourcing outside described heart yarn and twine yarn, described outer wrapped yarn comprises the first outer wrapped yarn and the second outer wrapped yarn, the yarn of two kinds of different colours is at least comprised in described heart yarn, the first outer wrapped yarn and the second outer wrapped yarn, it is outer and envelope heart yarn that described first outer wrapped yarn and the second outer wrapped yarn are wrapped in heart yarn, described heart yarn is twisted with the fingers to contrary with the winding direction of the first outer wrapped yarn, and the winding direction of described first outer wrapped yarn and the second outer wrapped yarn is contrary.The utility model is using the combination of the multicolored yarn of different colours as heart yarn and outer wrapped yarn, by twice looping processing, form the double-contracting wrapped yarn with color blending effect, colour mixture of the present utility model is by changing the color combination of heart yarn and outer wrapped yarn, heart yarn and the line density of outer wrapped yarn or the looping twist of outer wrapped yarn adjusts, adjustment flexibly, conveniently, is easy to the colour developing color controlling colour developing ratio and resultant yarn.
Description
Technical field
The utility model relates to the grey yarn of a kind of colour mixture fiber crops, particularly relates to a kind of double-contracting structure melange yarn.
Background technology
The technological means of giving textiles color appearance is a lot, (look spins to comprise stock-dye, natural colored fiber, chemical fibre original liquid coloring also can be included into this type of), yarn dyeing (knit by look, as cheese dyeing, hank dyeing, beam dyeing etc.), textile dyeing stamp, garment dyeing, art dyeing (embroidery, weaving done in fine silks and gold thread by the tapestry method, Freehandhand-drawing etc.) etc.It is traditional technology that look is knitted with textile dyeing, stamp, is most widely used, and other several technology defines beneficial complement to these two kinds of technology.Look spinning technique is because environmental pollution is little comparatively speaking, and the needs of suitable current textiles small lot, multi items, range of application was constantly expanded in recent years.
One of advantage of look spinning technique can adopt the fiber of multiple color to carry out blending resultant yarn exactly, be that colour carrier carries out colorant match with fiber, obtain being different from yarn dyeing, the yarn of textile dyeing and the color and luster feature of Fabric Style, can solve simultaneously dissimilar dyeing (kind of dyes is different, and dyeing is different) totally different and can not blending, intertexture problem.
It is that colour carrier carries out colorant match that yarn dye technology can be understood as with yarn, when the yarn of different colours interweaves in fabric, the color lump of longitude and latitude interlacing point formation can be presented at fabric face, to the color blending effect that the visual experience of people is different color light formation equally, although this colorant match effect is not so good as look spin colour mixture exquisiteness.
The yarn of coloured differently is handed over and twists with the fingers (as siro-spun AB yarn, Seluofle spin) and twist with the fingers (double-colored, polychrome twist yarn), the spinning of the section of comprising coloured silk can make an one thread present the outward appearance of multiple color simultaneously, can give fabric more diversified color appearance.The yarn combination with different colours is formed an one thread together, as previously mentioned, is take yarn as the technology that colour carrier carries out colorant match, relative and look spins, technology is simple and flexible more, and product style is unique, is a kind of colour mixture technology merited attention and study.
Hollow ingot wraping spinning technology (factory claims " machine bag ") is a kind of in recent years just by the spinning technique that popularization is come, and its feature is by the active spiral wound of a wrapped yarn to heart yarn, forms the complex yarn with looping structure; Looping can be carried out once (single bag), also can carry out twice (double-contracting), thus obtain the yarn with single pack arrangement and double-contracting structure.With other composite yarn process technology, as and twist yarn, SEILE textile, Seluofle spins, cladded yarns etc. are compared, the technical characteristic of hollow ingot wraping spinning is, with the yarn that filament yarn (monofilament or multifilament) or short fiber yarn are material structure new structure and performance, namely a kind of yarn reprocessing technology is belonged to, by heart yarn and wrapped yarn kind, the apolegamy of Structure and Properties, not only can improve the performance deficiency of yarn, can also design, construct the yarn with property and functional requirement, and simplicity of design, flexibly, it is a kind of Yarn Processing Technology highly paid close attention to.At present, hollow ingot wraping spinning technology is mainly used in the production of elastic force wrapped yarn, namely with elastic force monofilament such as spandexs for yarn core, after the preliminary draft of certain multiple, by the filament yarn such as polyamide fibre, terylene or the staple fibre yarn such as cotton, viscose glue carry out once coated or twice coated, be spun into ELASTANE YARNS, the woven or knit elastic fabric for weaving.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of double-contracting structure melange yarn, can there is the multicolored yarn of different colours for heart yarn and outer wrapped yarn, spinning has the double-contracting wrapped yarn of color blending effect, and structure is simple, is easy to the colour developing color controlling colour developing ratio and resultant yarn.
The utility model is solve the problems of the technologies described above the technical scheme adopted to be to provide a kind of double-contracting structure melange yarn, comprise heart yarn, it is characterized in that, be provided with outsourcing outside described heart yarn and twine yarn, described outer wrapped yarn comprises the first outer wrapped yarn and the second outer wrapped yarn, described heart yarn, the yarn of two kinds of different colours is at least comprised in first outer wrapped yarn and the second outer wrapped yarn, it is outer and envelope heart yarn that described first outer wrapped yarn and the second outer wrapped yarn are wrapped in heart yarn, described heart yarn is twisted with the fingers to contrary with the winding direction of the first outer wrapped yarn, the winding direction of described first outer wrapped yarn and the second outer wrapped yarn is contrary.
Above-mentioned double-contracting structure melange yarn, wherein, described heart yarn is non-twist filament yarn, low twist filament yarn or staple fiber single yarn.
Above-mentioned double-contracting structure melange yarn, wherein, described heart yarn is glassy yellow terylene draw textured yarn (DTY), and specification is 75D/24f, described first outer wrapped yarn is pale pink polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 800 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is large red polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 544 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
Above-mentioned double-contracting structure melange yarn, wherein, described heart yarn is blue terylene draw textured yarn (DTY), and specification is 75D/24f, described first outer wrapped yarn is crocus polyamide fibre draw textured yarn (DTY), specification is 150D/48f, the looping twist 400 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is large red polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 272 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
Above-mentioned double-contracting structure melange yarn, wherein, described heart yarn is white polyester draw textured yarn (DTY), and specification is 75D/24f, described first outer wrapped yarn is crocus polyamide fibre draw textured yarn (DTY), specification is 150D/48f, the looping twist 600 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is royalblue polyamide fibre draw textured yarn (DTY), specification is 75D/24f, the looping twist 408 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
Above-mentioned double-contracting structure melange yarn, wherein, described heart yarn is black terylene draw textured yarn (DTY), and specification is 70D/24f, described first outer wrapped yarn is white polyamide fibre draw textured yarn (DTY), specification is 100D/36f, the looping twist 1000 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is blue polyamide fibre draw textured yarn (DTY), specification is 75D/24f, the looping twist 680 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
Above-mentioned double-contracting structure melange yarn, wherein, described heart yarn is aquamarine blue terylene draw textured yarn (DTY), and specification is 75D/24f, described first outer wrapped yarn is buff polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 1000 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is purple polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 680 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
Above-mentioned double-contracting structure melange yarn, wherein, described heart yarn is purple terylene draw textured yarn (DTY), and specification is 70D/24f, described first outer wrapped yarn is buff polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 1000 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is aquamarine blue polyamide fibre draw textured yarn (DTY), specification is 75D/24f, the looping twist 680 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
Above-mentioned double-contracting structure melange yarn, wherein, described heart yarn is purple terylene draw textured yarn (DTY), and specification is 70D/24f, described first outer wrapped yarn is aquamarine blue polyamide fibre draw textured yarn (DTY), specification is 75D/24f, the looping twist 1000 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is buff polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 680 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
Above-mentioned double-contracting structure melange yarn, wherein, described heart yarn is buff terylene draw textured yarn (DTY), and specification is 70D/24f, described first outer wrapped yarn is blue polyamide fibre draw textured yarn (DTY), specification is 75D/24f, the looping twist 1000 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is fluorescent red polyamide fibre draw textured yarn (DTY), specification is 150D/48f, the looping twist 680 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
The utility model contrast prior art has following beneficial effect: the double-contracting structure melange yarn that the utility model provides, there is the combination of the multicolored yarn of different colours as heart yarn and outer wrapped yarn, by twice looping processing, form the double-contracting wrapped yarn with color blending effect, colour mixture of the present utility model is by changing the color combination of heart yarn and outer wrapped yarn, heart yarn and the line density of outer wrapped yarn or the looping twist of outer wrapped yarn adjusts, adjustment flexibly, conveniently, is easy to the colour developing color controlling colour developing ratio and resultant yarn.
Accompanying drawing explanation
Fig. 1 is the utility model double-contracting structure melange yarn structural representation;
Fig. 2 is the utility model double-contracting structure melange yarn process units structural representation.
In figure:
1 lining heart yarn cylinder 2 heart yarn 3 heart yarn lever jack
4 heart yarn tensioner 5 heart yarn twizzles, 6 times hollow ingots
7 times outer wrapped yarns of aluminium ingot pipe 8 first, 9 times twizzles
The outer wrapped yarn of aluminium ingot pipe 12 second on 10 upper hollow spindles 11
On 13, twizzle 14 wrapped yarn 15 draws yarn roller
16 wrapped yarn lever jack 17 traversing lever jack 18 take up rolls
19 yarn poteye 20 cheeses
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model will be further described.
Fig. 1 is the utility model double-contracting structure melange yarn structural representation.
Refer to Fig. 1, the double-contracting structure melange yarn that the utility model provides comprises heart yarn 2, wherein, be provided with outsourcing outside described heart yarn 2 and twine yarn, described outer wrapped yarn comprises the first outer wrapped yarn 8 and the second outer wrapped yarn 12, described heart yarn 2, the yarn of two kinds of different colours is at least comprised in first outer wrapped yarn 8 and the second outer wrapped yarn 12, it is outer and envelope heart yarn that described first outer wrapped yarn 8 and the second outer wrapped yarn 12 are wrapped in heart yarn 2, described heart yarn 2 is twisted with the fingers to contrary with the winding direction of the first outer wrapped yarn 8, the winding direction of described first outer wrapped yarn 8 and the second outer wrapped yarn 12 is contrary.
Fig. 2 is the utility model double-contracting structure melange yarn process units structural representation.
Please continue see Fig. 2, heart yarn 2 of the present utility model, from after unwinding lining heart yarn cylinder 1 is got off, walks around heart yarn lever jack 3, then through heart yarn tensioner 4 and stainless steel wire at heart yarn twizzle 5 place can and, enter lower hollow ingot 6 together.Because heart yarn unwinding tension is little, therefore need to arrange heart yarn tensioner, to adjust heart yarn tension force as required.Heart yarn is through the central tube of lower hollow ingot, lower twizzle 9 place and the first outer wrapped yarn 8 can and, the first outer wrapped yarn 8 is wound on lower aluminium ingot pipe 7, high speed rotary under the transmission of spindle band, formed the first time of heart yarn 2 is wound around, outer wrapped yarn helically wire looping on heart yarn.Pass through the hollow pipe of yarn through upper hollow spindle 10 of first time looping, upper twizzle 13 place to be wound on aluminium ingot pipe 11 and with on the reverse looping effect of the second outer wrapped yarn 12 of aluminium ingot pipe high speed rotary, form the wrapped yarn 14 of twice looping, wrap yarn is drawn through drawing yarn roller 15, walk around wrap yarn lever jack 16, through the yarn poteye 19 on traversing lever jack 17, do traverse motion, the spool being wound up into take up roll 18 frictional drive becomes cheese 20.Draw yarn roller and take up roll will ensure certain speed ratio, to ensure that winding shaping is good.When heart yarn tension force is abnormal, air ring during upper and lower wrapped yarn looping heart yarn is abnormal, and heart yarn and outer wrapped yarn plotted point can leave twizzle place, now, needs adjustment heart yarn tensioner 4 in real time, until heart yarn and outer wrapped yarn plotted point are positioned at twizzle place.
The double-contracting structure melange yarn that the utility model provides is made up of three one threads: heart yarn, a wrapped yarn and secondary wrapped yarn, kind, the specification of three one threads are determined according to product final use or customer requirement, three one threads are colour, can be three kinds of colors (three one thread three kinds colors), also can be two kinds of colors (three one threads have two homochromy, other one not homochromy).Three one threads all can be used as heart yarn, a wrapped yarn and secondary wrapped yarn by the method for permutation and combination.Yarn spinning adopts hollow ingot embedding spinning machine, twice looping (double-contracting).Heart yarn feeds under some tension, be subject to the looping of a wrapped yarn, form a wrapped yarn, what be subject to again secondary wrapped yarn after one time wrapped yarn is upwards drawn is wound twice wrapped yarn, drawing is wound up on bobbin again, and the looping of twice looping is twisted with the fingers on the contrary, as first time looping adopts Z to twist with the fingers looping, then secondary looping adopts S to twist with the fingers looping, to obtain comparatively stable yarn formation structure.Looping twist with the fingers to the selection gist of (hollow ingot gyratory directions) be heart yarn sth. made by twisting to, as adopted staple fiber single yarn to be heart yarn, one time looping is twisted with the fingers to twisting with the fingers to identical with short fiber heart yarn, in order to avoid hollow ingot is twisted with the fingers to contrary to the friction false twist of heart yarn and heart yarn, cause heart yarn untwisting, increase heart yarn broken end.When heart yarn adopts different color configuration from outer wrapped yarn, the color characteristic that whole one thread presents can be different.Because heart yarn is in yarn core the inside, one time wrapped yarn carries out part overlaid to it, and secondary wrapped yarn hides heart yarn and a wrapped yarn again, is in the outermost of yarn.What whole one thread showed is exactly color color lump that yarn visible surface comes out heart yarn, a wrapped yarn and secondary wrapped yarn formed, because yarn visible surface area is little, what visually feel is exactly these color lumps color blending effects to a certain degree, the color lump that heart yarn, a wrapped yarn and secondary wrapped yarn are formed is less, mixes finer and smoother.The color lump size that adjustment heart yarn, a wrapped yarn and secondary wrapped yarn are formed, line density and the looping twist by adjusting heart yarn and outer wrapped yarn realize, the line density of heart yarn, outer wrapped yarn is less (yarn is thinner), the looping twist is larger, the looping screw line pitch of outer wrapped yarn on unit length heart yarn is less, the color lump that heart yarn, a wrapped yarn and secondary wrapped yarn are formed is less, and color blending effect is better.Change the color configuration of heart yarn and outer wrapped yarn, configuration as " heart yarn+wrapped yarn+secondary wrapped yarn " is become " red+blue+yellow " from " red+yellow+blue ", when other condition is constant, the colour developing of resultant yarn can change because of the change of heart yarn and outer wrapped yarn colour developing ratio.When other condition is constant, the line density of heart yarn and outer wrapped yarn changes, and also can change heart yarn and outer wrapped yarn colour developing ratio, thus affect the colour developing color of resultant yarn, provide several preferred embodiment below.
Embodiment one: heart yarn 2 is glassy yellow polyester DTY (Draw texturing yarn, DTY), 75D/24f; First outer wrapped yarn 8 is pale pink polyamide fibre DTY, 70D/24f, and the looping twist 800 twists with the fingers/m, twists with the fingers to Z; Second outer wrapped yarn 12 is large red polyamide fibre DTY, 70D/24f, and the looping twist is 544 sth. made by twisting/m, and looping is twisted with the fingers to S.
Embodiment two: heart yarn 2 is blue polyester DTY, 75D/24f; First outer wrapped yarn 8 is crocus polyester DTY, 150D/48f, and the looping twist 400 twists with the fingers/m, twists with the fingers to Z; Second outer wrapped yarn 12 is large red polyamide fibre DTY, 70D/24f, and the looping twist is 272 sth. made by twisting/m, and looping is twisted with the fingers to S.
Embodiment three: heart yarn 2 is white polyester DTY, 75D/24f; First outer wrapped yarn 8 is crocus polyester DTY, 150D/48f, and the looping twist 600 twists with the fingers/m, twists with the fingers to Z; Second outer wrapped yarn 12 is royalblue polyester DTY, 75D/24f, and the looping twist is 408 sth. made by twisting/m, and looping is twisted with the fingers to S.
Embodiment four: heart yarn 2 is black polyamide fibre DTY, 70D/24f; First outer wrapped yarn 8 is white polyester DTY, 100D/36f, and the looping twist 1000 twists with the fingers/m, twists with the fingers to Z; Second outer wrapped yarn 12 is blue polyester DTY, 75D/24f, and the looping twist is 680 sth. made by twisting/m, and looping is twisted with the fingers to S.
Embodiment five: heart yarn 2 is aquamarine blue polyester DTY, 75D/24f; First outer wrapped yarn 8 is buff polyamide fibre DTY, 70D/24f, and the looping twist 1000 twists with the fingers/m, twists with the fingers to Z; Second outer wrapped yarn 12 is purple polyamide fibre DTY, 70D/24f, and the looping twist is 680 sth. made by twisting/m, and looping is twisted with the fingers to S.
Embodiment six: heart yarn 2 is purple polyamide fibre DTY, 70D/24f; First outer wrapped yarn 8 is buff polyamide fibre 70D/24f, and the looping twist is 1000 sth. made by twisting/m, and looping is twisted with the fingers to Z; Second outer wrapped yarn 12 is aquamarine blue polyester DTY, 75D/24f, and the looping twist is 680 sth. made by twisting/m, and looping is twisted with the fingers to S.
Embodiment seven: heart yarn 2 is purple polyamide fibre DTY, 70D/24f; First outer wrapped yarn 8 is aquamarine blue polyester DTY, 75D/24f, and the looping twist is 1000 sth. made by twisting/m, and looping is twisted with the fingers to Z; Second outer wrapped yarn 12 is buff polyamide fibre DTY, 70D/24f, and the looping twist is 680 sth. made by twisting/m, and looping is twisted with the fingers to S.
Embodiment eight: heart yarn 2 is buff polyamide fibre DTY, 70D/24f; First outer wrapped yarn 8 is blue polyester DTY, 75D/24f, and the looping twist is 1000 sth. made by twisting/m, and looping is twisted with the fingers to Z; Second outer wrapped yarn 12 is fluorescent red polyester DTY, 150D/48f, and the looping twist is 680 sth. made by twisting/m, and looping is twisted with the fingers to S.
In sum, the double-contracting structure melange yarn that the utility model provides, there is the combination of the multicolored yarn of different colours as heart yarn and outer wrapped yarn, by twice looping processing, form the double-contracting wrapped yarn with color blending effect, concrete advantage is as follows: what 1, the utility model provided utilizes hollow ingot wraping spinning technology to spin the composite yarn with mixed color effect, be that colour carrier carries out colour mixture with yarn, rely on looping structure heart yarn, outer wrapped yarn to be divided into the color lump of different colours, form the colour mixture of yam surface different colours coloured light.2, the color of melange yarn is by changing the color combination of heart yarn and outer wrapped yarn, the line density changing heart yarn and outer wrapped yarn or the looping twist that changes once outer wrapped yarn and the outer wrapped yarn of secondary adjusts, and adjustment flexibly, conveniently.3, melange yarn of the present utility model is that raw material is processed with yarn, be that color lump carries out colour mixture with yarn, heart yarn and outer wrapped yarn can select the yarn of any kind, performance, and the yarn of any color all can be used as spinning material, the yarn of structure new structure and performance.Yarn texture has good designability, and a kind of yarn can by resultant yarn outward appearance and performance requirement respectively as heart yarn, a wrapped yarn and secondary wrapped yarn, makes the fiber of heterogeneity be distributed in position in desired yarn.
Although the utility model discloses as above with preferred embodiment; so itself and be not used to limit the utility model; any those skilled in the art; not departing from spirit and scope of the present utility model; when doing a little amendment and perfect, therefore protection domain of the present utility model is when being as the criterion of defining with claims.
Claims (10)
1. a double-contracting structure melange yarn, comprise heart yarn, it is characterized in that, be provided with outsourcing outside described heart yarn and twine yarn, described outer wrapped yarn comprises the first outer wrapped yarn and the second outer wrapped yarn, the yarn of two kinds of different colours is at least comprised in described heart yarn, the first outer wrapped yarn and the second outer wrapped yarn, it is outer and envelope heart yarn that described first outer wrapped yarn and the second outer wrapped yarn are wrapped in heart yarn, described heart yarn is twisted with the fingers to contrary with the winding direction of the first outer wrapped yarn, and the winding direction of described first outer wrapped yarn and the second outer wrapped yarn is contrary.
2. double-contracting structure melange yarn as claimed in claim 1, it is characterized in that, described heart yarn is non-twist filament yarn, low twist filament yarn or staple fiber single yarn.
3. double-contracting structure melange yarn as claimed in claim 1, it is characterized in that, described heart yarn is glassy yellow terylene draw textured yarn (DTY), and specification is 75D/24f, described first outer wrapped yarn is pale pink polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 800 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is large red polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 544 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
4. double-contracting structure melange yarn as claimed in claim 1, it is characterized in that, described heart yarn is blue terylene draw textured yarn (DTY), and specification is 75D/24f, described first outer wrapped yarn is crocus polyamide fibre draw textured yarn (DTY), specification is 150D/48f, the looping twist 400 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is large red polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 272 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
5. double-contracting structure melange yarn as claimed in claim 1, it is characterized in that, described heart yarn is white polyester draw textured yarn (DTY), and specification is 75D/24f, described first outer wrapped yarn is crocus polyamide fibre draw textured yarn (DTY), specification is 150D/48f, the looping twist 600 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is royalblue polyamide fibre draw textured yarn (DTY), specification is 75D/24f, the looping twist 408 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
6. double-contracting structure melange yarn as claimed in claim 1, it is characterized in that, described heart yarn is black terylene draw textured yarn (DTY), and specification is 70D/24f, described first outer wrapped yarn is white polyamide fibre draw textured yarn (DTY), specification is 100D/36f, the looping twist 1000 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is blue polyamide fibre draw textured yarn (DTY), specification is 75D/24f, the looping twist 680 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
7. double-contracting structure melange yarn as claimed in claim 1, it is characterized in that, described heart yarn is aquamarine blue terylene draw textured yarn (DTY), and specification is 75D/24f, described first outer wrapped yarn is buff polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 1000 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is purple polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 680 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
8. double-contracting structure melange yarn as claimed in claim 1, it is characterized in that, described heart yarn is purple terylene draw textured yarn (DTY), and specification is 70D/24f, described first outer wrapped yarn is buff polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 1000 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is aquamarine blue polyamide fibre draw textured yarn (DTY), specification is 75D/24f, the looping twist 680 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
9. double-contracting structure melange yarn as claimed in claim 1, it is characterized in that, described heart yarn is purple terylene draw textured yarn (DTY), and specification is 70D/24f, described first outer wrapped yarn is aquamarine blue polyamide fibre draw textured yarn (DTY), specification is 75D/24f, the looping twist 1000 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is buff polyamide fibre draw textured yarn (DTY), specification is 70D/24f, the looping twist 680 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
10. double-contracting structure melange yarn as claimed in claim 1, it is characterized in that, described heart yarn is buff terylene draw textured yarn (DTY), and specification is 70D/24f, described first outer wrapped yarn is blue polyamide fibre draw textured yarn (DTY), specification is 75D/24f, the looping twist 1000 twists/m, and looping direction is that Z twists with the fingers, described second outer wrapped yarn is fluorescent red polyamide fibre draw textured yarn (DTY), specification is 150D/48f, the looping twist 680 twists/m, and looping is twisted with the fingers and twisted with the fingers to for S.
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