阅读说明：本技术 一种多品种混纺包芯纱线及其制备方法 (Multi-variety blended core-spun yarn and preparation method thereof ) 是由 王佳 王益平 殷飞 包秋梅 周红玉 于 2021-08-26 设计创作，主要内容包括：本发明公开了一种多品种混纺包芯纱线及其制备方法,所述多品种混纺包芯纱线按质量百分比至少包括以下材料：粘胶长丝40-45％,巴素兰羊毛40-45％,PBT纤维10-20％。本发明提供的多品种混纺包芯纱线具有强力好、弹性优良等特性,在生产过程中不会产生断头现象；外观呈现出芯丝隐现、外柔内刚、挺括舒适的独特风格；兼具较好的光洁度与柔软度,外观风格和服用舒适度俱佳。(The invention discloses a multi-variety blended core-spun yarn and a preparation method thereof, wherein the multi-variety blended core-spun yarn at least comprises the following materials in percentage by mass: 40-45% of viscose filament, 40-45% of Baphican wool and 10-20% of PBT fiber. The multi-variety blended core-spun yarn provided by the invention has the characteristics of good strength, excellent elasticity and the like, and can not generate the phenomenon of broken ends in the production process; the appearance presents a unique style of invisible core wires, soft outer part, rigid inner part, stiff and comfortable; has better smooth finish and softness, and has good appearance style and comfort for taking.)

1. The multi-variety blended core-spun yarn is characterized by at least comprising the following materials in percentage by mass: 40-45% of viscose filament, 40-45% of Baphican wool and 10-20% of PBT fiber.

2. The multi-variety blended core-spun yarn of claim 1, wherein the multi-variety blended core-spun yarn has a spun count of 60 Nm/2; preferably, the twist is 650-700/400-500T/m.

Preferably, the PBT fiber has a fineness of 20D.

Preferably, the diameter of the fibers of the bayonan wool is 14-15 μm; preferably, the length is 68-78 mm.

3. The method of preparing a multi-variety blended core-spun yarn according to claim 1 or 2, characterized by at least comprising the steps of:

step one, artificial cotton mixing: adding the bayonlan wool into a mixture of the crude oil and the water, then adding the viscose filaments, uniformly mixing, packing and pressing into a cotton bale, keeping a cotton layer in the cotton bale horizontally placed, and filling the cotton bale;

step two, blowing: grabbing the wool fibers in the cotton layer in the first step by using a plucker, opening and removing impurities of the wool fibers by using an opener, and then sequentially passing through a vibration cotton feeder and a lap former to roll the wool fibers;

step three, cotton carding: fully combining, carding and drafting the wool fibers to ensure that the wool fibers are as parallel and straight as possible and are gradually thinned to the required gram weight to obtain the needle-thinned cotton sliver;

step four, drawing and roving: feeding the needle-thinned cotton slivers into a drawing frame and a roving frame one by one in sequence to obtain the Basu blue wool roving, and then putting the Basu blue wool roving on the spinning frame;

spinning: the PBT fiber is hung on a spinning machine and then led into a front roller, and simultaneously combined with the Basilan wool roving slivers drafted by a rear middle roller at the front roller, and then twisted to form spun yarn;

step six: spooling: winding the spun yarn, and removing harmful yarn defects to form a cone winding yarn;

step seven: doubling and two-for-one twisting: and doubling the spooled yarns, and twisting on a two-for-one twister to obtain a finished product.

4. The method according to any one of claims 1 to 3, wherein the weight ratio of the bayan wool, the crude oil and the water in the first step is 100: 1: 9;

preferably, the specific steps of adding the baphicacanthus wool into the mixture of the crude oil and the water are as follows: taking 100kg of viscose filament yarn and bawland wool as a unit, adding the bawland wool into a mixture of crude oil and water for smoldering for at least 24 hours, then adding the viscose filament yarn and mixing uniformly.

5. The method of any one of claims 1-4, wherein the beater blade of the plucker of step two protrudes beyond the rib by a distance of 2-4 mm;

preferably, the rotating speed of the beater of the bale plucker is 800-;

preferably, the bale plucker is an FA002 disc bale plucker;

preferably, the opener is an SFA035 type mixed opener and/or an FA106 card wire opener;

preferably, the vibration cotton feeder is an FA161 vibration cotton feeder;

preferably, the lap former is a A076F single beater lap former;

preferably, the relative humidity of the environment in the blowing process is 60-80%.

6. The process according to any one of claims 1 to 5, wherein the third step is carried out using a FA201B carding machine;

preferably, the carding machine of FA201B has sliver ration of 20-25g/5 m;

preferably, the draft multiple of the FA201B carding machine is 91-94.

7. The production method according to any one of claims 1 to 6, wherein the drawing frame and the roving frame in step four are an FA303 drawing frame and an A454G roving frame, respectively;

preferably, the multiple of the drafting head path of the rear zone of the A454G roving frame is at least 1.7, preferably 1.7-1.9; the multiple of the drafting end path of the rear area of the A454G roving frame is 1.2-1.4;

preferably, the roving basis weight of the A454G roving frame is 4.5-5.5g/10 m;

preferably, the rubber roller pressurization of the A454G roving frame is 20% -25% heavier than that of cotton spinning;

preferably, the twist factor of the A454G roving frame is 80-90.

8. The manufacturing method according to any one of claims 1 to 7, wherein the spinning frame in the fifth step is a FA506 spinning frame;

preferably, the total draft multiple of the spinning frame is 38-40;

preferably, the back zone draft multiple of the spinning frame is 1.2-1.4;

preferably, the twist of the spinning frame is set to 92-96T/m.

9. The method for preparing according to any one of claims 1 to 8, wherein step six is performed by winding using an AC338 automatic winder;

preferably, the spooling speed is 1200-1500 m/min.

10. The preparation method as claimed in any one of claims 1 to 9, wherein the twist in step seven is up to 600 and 620T/m;

preferably, the finished product is obtained after twisting through a silk roller and/or an overfeed roller.

Technical Field

The invention belongs to the technical field of textile products, and particularly relates to a multi-variety blended core-spun yarn and a preparation method thereof.

Background

The bawland wool is wool treated by the bawland process, has the advantages of fluffiness, softness, bright color, small damage to fiber strength and the like, but is expensive, and consumers need careful care and usually can keep high-grade feeling by dry cleaning or careful hand washing. The treatment of the bayonan process has two typical forms, one is a novel treatment of the bayonan, and the product is characterized in that: the fabric is fluffy and soft, has better spinnability, good dyeing brightness and certain pilling property improvement; secondly, the super treatment of the Parmesan, the product is characterized in that: fluffy, soft, smooth and fine, has good whiteness and good dyeing brightness, and has better spinnability than mercerized wool. Fluffy, soft and bright dyed cotton is the common property of the bayonan blue treated wool, and the wool fabric brings the advantages of comfortable wearing performance and high-grade hand feeling and appearance to consumers. Therefore, the poor strength of bayonan wool is a more prominent disadvantage. The cation modified polyester yarn (PBT) is a novel polyester product, is easy to dye, and has good permeability, hygroscopicity and air permeability; at present, no product for blending the bayonan wool and the PBT is seen in the market.

Disclosure of Invention

The invention aims to provide a multi-variety blended core-spun yarn and a preparation method thereof, which have the characteristics of good strength, excellent elasticity and the like, and can not generate the phenomenon of broken ends in the production process; the appearance presents a unique style of invisible core wires, soft outer part, rigid inner part, stiff and comfortable; has better smooth finish and softness, and has good appearance style and comfort for taking.

Therefore, the technical scheme of the invention is as follows:

in a first aspect, the invention provides a multi-variety blended core-spun yarn, which at least comprises the following materials by mass percent: 40-45% (e.g., 40%, 40.5%, 41%, 41.5%, 42%, 42.5%, 43%, 43.5%, 44%, 44.5%, 45%, or all values in the range, which will not be described herein due to space limitations), and 10-20% (e.g., 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, or all values in the range, which will not be described herein due to space limitations).

Preferably, the spinning number of the multi-variety blended core-spun yarn is 60 Nm/2; preferably, the twist is 650-700/400-500T/m.

Preferably, the PBT fiber has a fineness of 20D.

Preferably, the diameter of the fibers of the baphicanthus cusia is 14-15 μm (for example, 14 μm, 14.1 μm, 14.2 μm, 14.3 μm, 14.4 μm, 14.5 μm, 14.6 μm, 14.7 μm, 14.8 μm, 14.9 μm, 15 μm or all values in the range may be mentioned, and the description is omitted for reasons of brevity); preferably, the length is 68-78mm (for example, 68mm, 69mm, 70mm, 71mm, 72mm, 73mm, 74mm, 75mm, 76mm, 77mm, 78mm or all values in the range may be used, which will not be described herein due to space limitations).

In a second aspect, the present invention provides a method for preparing the multi-variety blended core-spun yarn according to the first aspect, which at least comprises the following steps:

step one, artificial cotton mixing: adding the bayonlan wool into a mixture of the crude oil and the water, then adding the viscose filaments, uniformly mixing, packing and pressing into a cotton bale, keeping a cotton layer in the cotton bale horizontally placed, and filling the cotton bale;

step two, blowing: grabbing the wool fibers in the cotton layer in the first step by using a plucker, opening and removing impurities of the wool fibers by using an opener, and then sequentially passing through a vibration cotton feeder and a lap former to roll the wool fibers;

step three, cotton carding: fully combining, carding and drafting the wool fibers to ensure that the wool fibers are as parallel and straight as possible and are gradually thinned to the required gram weight to obtain the needle-thinned cotton sliver;

step four, drawing and roving: feeding the needle-thinned cotton slivers into a drawing frame and a roving frame one by one in sequence to obtain the Basu blue wool roving, and then putting the Basu blue wool roving on the spinning frame;

spinning: the PBT fiber is hung on a spinning machine and then led into a front roller, and simultaneously combined with the Basilan wool roving slivers drafted by a rear middle roller at the front roller, and then twisted to form spun yarn;

step six: spooling: winding the spun yarn, and removing harmful yarn defects to form a cone winding yarn;

step seven: doubling and two-for-one twisting: and doubling the spooled yarns, and twisting on a two-for-one twister to obtain a finished product.

Preferably, the mass ratio of the bawland wool, the crude oil and the water in the first step is 100: 1: 9;

preferably, the specific steps of adding the baphicacanthus wool into the mixture of the crude oil and the water are as follows: taking 100kg of viscose filament yarn and bawland wool as a unit, adding the bawland wool into a mixture of crude oil and water for smoldering for at least 24 hours, then adding the viscose filament yarn and mixing uniformly.

In order to ensure that the two raw materials (viscose and bayonan wool) of the wrapping fiber are more fully mixed, a manual small-amount comprehensive cotton mixing method is preferably adopted, 100Kg of the two raw materials are matched into a unit, and the unit is uniformly mixed, packed and compressed into the cotton bale. The cotton bales are arranged closely and vertically (i.e. the longest side of the cotton bale is vertical, so that the cotton layer in the cotton bale is kept in a horizontal state), and the cotton bales cannot be mixed horizontally and vertically and filled and supplemented evenly.

Preferably, the beater blade of the plucker in the second step extends out of the rib by a distance of 2-4mm (for example, 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 3mm, 3.2mm, 3.4mm, 3.6mm, 3.8mm, 4mm or all values in the range, which is not described in detail due to space limitation), so as to obtain a better opening effect;

preferably, the rotating speed of the beater of the plucker is 800-900r/min (for example, 800r/min, 810r/min, 820r/min, 830r/min, 840r/min, 850r/min, 860r/min, 870r/min, 880r/min, 890r/min, 900r/min r/min or all values in the range, which is not described in detail due to space limitation), so that the aims of grabbing with less grabbing and grabbing with multiple bags are achieved, and the opening and mixing effects are improved;

preferably, the bale plucker is an FA002 disc bale plucker;

preferably, the opener is an SFA035 type mixed opener and/or an FA106 card wire opener;

preferably, the vibration cotton feeder is an FA161 vibration cotton feeder;

preferably, the lap former is a A076F single beater lap former;

preferably, in the blowing process, the relative humidity of the environment is 60-80% (for example, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80% or all values in the range, which is not described in detail due to space limitation), so that the wool is prevented from dropping in a large amount in the production process, and the subsequent rolling and processing steps are facilitated.

Preferably, the third step is carried out by using an FA201B carding machine;

preferably, the carding machine of FA201B has a sliver ration of 20-25g/5m, such as 20g/5m, 21g/5m, 22g/5m, 23g/5m, 24g/5m, 25g/5m or all values in the range, which is not repeated due to space limitation;

preferably, the draft multiple of the FA201B carding machine is 91-94, for example 91, 92, 93, 94.

The two blending raw materials have light specific gravity, soft hand feeling and good bulkiness, and cotton carding strips are thick and are easy to block a horn mouth, so that the cleaning of a channel can be ensured by cotton carding by adopting the parameters on the premise of ensuring the normal cotton net, and the coiling is facilitated.

Preferably, the drawing frame and the roving frame in the fourth step are an FA303 drawing frame and an A454G roving frame respectively;

preferably, the multiple of the drafting head track in the rear area of the a454G roving frame is at least 1.7, preferably 1.7-1.9 (for example, it may be 1.7, 1.72, 1.74, 1.76, 1.78, 1.8, 1.82, 1.84, 1.86, 1.88, 1.9 or all values in the range, which will not be described in detail due to the limitation of space); the multiple of the draft final pass in the rear area of the a454G roving frame is 1.2-1.4 (for example, it may be 1.2, 1.22, 1.24, 1.26, 1.28, 1.3, 1.32, 1.34, 1.36, 1.38, 1.4 or all values in the range, and will not be described again due to the limitation of space); the blended raw material of the blended cotton has light specific gravity, soft hand feeling, good bulking performance, thick cotton carding strips and easy horn mouth blockage, so that the raw material has high resilience and the tension drafting is not suitable to be overlarge on the premise of ensuring the normal cotton net. The back zone drafting belongs to simple drafting, and the smaller back zone drafting can fully play the drafting role of the main drafting zone, thereby being beneficial to improving the evenness level.

Preferably, the roving basis weight of the A454G roving frame is 4.5-5.5g/10m, and can be, for example, 4.5g/10m, 4.6g/10m, 4.7g/10m, 4.8g/10m, 4.9g/10m, 5.0g/10m, 5.1g/10m, 5.2g/10m, 5.3g/10m, 5.4g/10m, 5.5g/10m or all values in the range, which is not described again due to space limitation;

preferably, the rubber roller of the a454G roving frame weighs 20% to 25% more than the pressure applied to spin cotton, for example, 20%, 20.5%, 21%, 21.5%, 22%, 22.5%, 23%, 23.5%, 24%, 24.5%, 25% or all values in the range may be applied, which is not repeated herein due to space limitations; because the length of the wool fiber is longer and the ration is smaller, the stability of the drafting force and the holding force can be ensured by heavier pressurization, and the movement of the fiber can be effectively controlled.

Preferably, the A454G roving frame has a twist multiplier of 80-90 (e.g., 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90), and this option reduces the accidental stretching of the roving and prevents the formation of details.

Preferably, the spinning frame in the fifth step is an FA506 spinning frame;

preferably, the total draft multiple of the spinning frame is 38-40 (for example, 38, 38.5, 39, 39.5, 40 or all values in the range, which is not described again due to space limitation);

preferably, the draft multiple of the back zone of the spinning frame is 1.2-1.4 (for example, it may be 1.2, 1.25, 1.3, 1.35, 1.4 or all values in the range, which is not described in detail due to space limitation);

preferably, the twist of the spinning frame is set to 92-96T/m, for example, 92T/m, 93T/m, 94T/m, 95T/m, 96T/m or all values in the range, which is not described again due to space limitation; the finished product has smooth hand feeling and enough breaking strength.

Before the core-spun yarn is spun, a large-package PBT fiber filament bobbin is inverted into a small-package core filament bobbin, so that the tension of the core filament can be ensured to be consistent, the small core filament bobbin is placed on two synchronous rollers of a core-spun yarn device arranged on a spinning machine during spinning, a worker stops the core filament to draw out the core filament, the core filament passes through a godet and then bypasses a godet wheel to enter a front area and be combined with a Bayonlan wool roving strand, the drafting multiple of the core filament is determined by the linear speed ratio of a front roller and the rollers, and finally the core filament is output from the front roller together. Because the yarn-drawing tension of the core wire increases the guiding force of the front roller, if the holding force of the front roller is insufficient, hard head is easy to appear, so that the spinning process must be adjusted, the pressure of the front roller is increased, the jaw gauge is increased, and the front roller gauge is properly enlarged to reduce the drawing force and prevent the front rubber roller from sliding backwards to cause the hard head. In order to prevent the core wire from deviating, a mechanic must check regularly to ensure that the core wire is in the middle of the strand or is held to the right by adjusting the position of the godet wheel. In the spinning process, when the core-spun yarn is broken, the stop worker joint needs to operate normally, the broken core yarn is connected, and the core-lacking yarn is avoided.

Preferably, in the sixth step, an AC338 automatic winder is used for winding, harmful yarn defects are eliminated, and the increase amplitude of hairiness is controlled;

preferably, the spooling speed is 1200-1500m/min, for example, 1200m/min, 1250m/min, 1300m/min, 1350m/min, 1400m/min, 1450m/min, 1500m/min or all values in the range, which will not be described again due to space limitation.

Preferably, in the step seven, two single yarn bobbins are combined into a flat bobbin through a doubling machine, and then twisted to 600- & lt 620 & gt/m, in order to make wool varieties soft and fluffy, the twist degree cannot be too high;

preferably, the twisted yarn passes through a yarn roller and/or an overfeed roller, so that the uniform value of the twist is low, and the flatness of a finished fabric product is guaranteed.

Compared with the prior art, the multi-variety blended core-spun yarn provided by the invention has the characteristics of good strength, excellent elasticity and the like, and can not generate the phenomenon of broken ends in the production process; the appearance presents a unique style of invisible core wires, soft outer part, rigid inner part, stiff and comfortable; has better finish and softness, good appearance style and comfort level, and improves the grade of the product.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The following described embodiments are exemplary and are intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Example 1

In this example, cation-modified polyester yarn (abbreviated as PBT) manufactured by NYLSTER, France is used and is sold under the trade name ELITE; basilan wool (20D) from the former and viscose filament yarn from the former chemical fibre company Limited, Shaoxing Bo .

Step one, artificial cotton mixing: adding the bayonlan wool into a mixture of the crude oil and the water, then adding the viscose filaments, uniformly mixing, packing and pressing into a cotton bale, keeping a cotton layer in the cotton bale horizontally placed, and filling the cotton bale; the mass ratio of the bayonlan wool to the wool oil to the water is 100: 1: 9;

step two, blowing: grabbing the wool fibers in the cotton layer in the first step by using a plucker, opening and removing impurities of the wool fibers by using an opener, and then sequentially passing through a vibration cotton feeder and a lap former to roll the wool fibers; the beater blade of the plucker extends out of the rib by 3 mm; the relative humidity of the environment is 60-80%; other specific process parameters are shown in table 1;

TABLE 1 Main Process parameters in step two

Step three, cotton carding: fully combining, carding and drafting the wool fibers to ensure that the wool fibers are as parallel and straight as possible and are gradually thinned to the required gram weight to obtain the needle-thinned cotton sliver; other specific process parameters are shown in table 2;

TABLE 2 Main Process parameters in step three

Step four, drawing and roving: feeding the needle-thinned cotton slivers into a drawing frame and a roving frame one by one in sequence to obtain the Basu blue wool roving, and then putting the Basu blue wool roving on the spinning frame; the compression of the rubber roller is 25 percent heavier than that of cotton spinning, and other specific process parameters are shown in tables 3-1 and 3-2;

TABLE 3-1 drawing of the main Process parameters in step four

TABLE 3-2 Main Process parameters in step four-Rove

Spinning: the PBT fiber is hung on a spinning machine and then led into a front roller, and simultaneously combined with the Basilan wool roving slivers drafted by a rear middle roller at the front roller, and then twisted to form spun yarn; other specific process parameters are shown in table 4;

TABLE 4 Main Process parameters in step five

Step six: spooling: winding the spun yarn, and removing harmful yarn defects to form a cone winding yarn; other specific process parameters are shown in table 5;

TABLE 5 Main Process parameters in step six

Step seven: doubling and two-for-one twisting: and doubling the spooled yarns, and twisting the spooled yarns on a two-for-one twister to 611T/m to obtain a finished product.

The finished product is implemented according to the technical requirements of Q320281KCD12-2015 'novel wool blended core-spun yarn for knitting', and each index is detected by the national textile product quality supervision center (Jiangyin) to reach the first-class standard requirement.

Comparative example 1

The procedure of example 1 was followed, and the procedure of the second step of cleaning the cotton was omitted, and the procedure was otherwise the same as in example 1.

Comparative example 2

The raw materials used are viscose filament and PBT (both from the same source and from the same batch as in example 1), and the rest are the same as in example 1.

Comparative example 3

The raw materials are bayonan wool and PBT (the sources are the same as those in example 1 and the same batch of products), and the rest are the same as those in example 1.

Performance testing

And (3) softness testing: the evaluation is carried out by a hand touch method, a mean value is obtained after grading and grading by multiple persons, the higher the score is, the better the score is, and otherwise the hand feeling is poor (the evaluation method is a well-known and feasible test method in the textile industry), the more "+" in table 6 indicates that the effect is better (for example, the softness + + + of the fabric is one grade better than + +), the highest evaluation grades of the smoothness of the fabric and the softness of the fabric are both "+ ++++", and the lowest evaluation grades are both "+"; similarly, the fabric smoothness test is evaluated by visual comparison, and the fabric smoothness test is averaged after grading by multiple grades (the process is the same as the fabric softness test). The sum of the smoothness of the fabric and the softness of the fabric is the score of the overall evaluation; for the fabric, the smoothness, the softness and the comprehensive evaluation are higher than one grade, and the appearance style and the wearing comfort of the fabric are obviously improved.

As can be seen from table 6, in comparative example 1, although the smoothness of the fabric is significantly improved, the softness of the fabric is not good; in comparative example 2, although the softness of the fabric was improved, the improvement effect on the smoothness of the fabric was not good; comparative example 3 gave comparable results to comparative example 2, but the softness was poor and the overall performance was poor; in contrast, the results of example 1 were the best, with significant improvements in both smoothness and softness.

Table 6 softness test results

	Evaluation of smoothness	Evaluation of softness	General evaluation
				Example 1	+++++	+++++	++++++++++
Comparative example 1	+++	+	++++
				Comparative example 2	++	+++	+++++
Comparative example 3	+++	++	+++++

In addition, the core wire of comparative example 1 is thin, and multiple times of end breakage phenomenon occur in the production process; the yarn strength of the comparative examples 2 and 3 is obviously lower than that of the example 1, the exposure of the core yarn is less, the color of the surface of the yarn body is similar to that of the sheath yarn, and the unique style of the hidden core yarn, the soft outer and the stiff inner and the comfortable stiff inner yarn as the example 1 cannot be presented. In addition, the breaking strength of the example 1 can reach 12cN/tex, which shows that the multi-variety blended core-spun yarn of the invention has the characteristics of good strength, excellent elasticity and the like. The test results of other main physical indicators are shown in table 7.

TABLE 7 results of other physical index tests

Item	Example 1	Comparative example 1	Comparative example 2	Comparative example 3
					Evenness (cv value)	13.8	12.2	12.6	11.9
Details (Km)	37	35	36	22
					Nubs (km)	80	75	70	77
Cotton knots (Km)	45	35	32	25
					Coefficient of variation of hundred meters weight (cv value)	2	3.5	6	2.5
Breaking Strength (cN/tex)	12	9	7	10
					Coefficient of variation (cv value)	9	14	20	12

In conclusion, the multi-variety blended core-spun yarn provided by the invention has the characteristics of good strength, excellent elasticity and the like, and can not generate the phenomenon of broken ends in the production process; the appearance presents a unique style of invisible core wires, soft outer part, rigid inner part, stiff and comfortable; has better smooth finish and softness, and has good appearance style and comfort for taking.

It is to be noted and understood that various modifications and improvements can be made to the invention described in detail above without departing from the spirit and scope of the invention as claimed in the appended claims. Accordingly, the scope of the claimed subject matter is not limited by any of the specific exemplary teachings provided.

The applicants hereby give notice that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.