Color gradient wrapped yarn and color gradient fabric

Abstract

The invention belongs to the technical field of textile, and discloses a color gradient wrapped yarn and a color gradient fabric. The color gradient wrapping yarn comprises first yarn and second yarn, the first yarn and the second yarn are different in color, the second yarn is wound on the outer layer of the first yarn in a spiral mode, and the color gradient wrapping yarn circulates in the axial direction according to color gradient; in one group of color gradient circulation, more than three winding yarn sections with different winding densities are included, and the winding density is the winding density of the second yarn. According to the color gradient wrapped yarn, the yarn structure is stable, the length of the color gradient circulation is controllable, the gradient color effect of different lengths can be achieved, the wrapping effect can be different through different changes of the winding density of multiple (three or more) yarn winding sections according to the requirement of the color gradient effect, and the color gradient effect is achieved. Therefore, the gradual change effect of different colors is achieved, the gradual change effect is harmonious, and color styles are variable.

Description

Technical Field

[0001] The invention belongs to the technical field of textiles, and in particular relates to a color gradient wrapped yarn and a color gradient fabric. Background Art

[0002] Gradient yarn is generally made by blending two or more fibers of different colors. The prepared yarn has a variety of colors and is widely popular in the market.

[0003] Most of the existing gradient yarns are produced by ring spinning machines. Multiple rovings with different colors, fineness, feeding spacing, etc. are fed into the spinning frame, and the gradient yarn is prepared by adjusting the spinning tension during the lifting and lowering of the steel collar plate. Since a color cycle is achieved during the lifting and lowering of the steel collar plate, after the ring spinning frame is in stable production, the height (time) of a cycle of the steel collar plate is the same, resulting in the length of a color cycle unit cannot be designed and changed, so it is impossible to prepare color cycle units with different lengths; and multiple groups of rovings are output simultaneously through the front roller, and the output length per unit time is consistent. No matter which group of rovings is wound outside, because the length is consistent, the effect of this winding and coating is weak, and the yarn structure is unstable. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the above-mentioned prior art. To this end, the present invention provides a color gradient wrapped yarn and a color gradient fabric, wherein the color gradient wrapped yarn has a controllable gradient length, a coordinated gradient effect, and a variety of styles.

[0005] According to a first aspect of the present invention, a color gradient wrapped yarn is provided, comprising a first yarn and a second yarn, wherein the first yarn and the second yarn have different colors, and the second yarn is spirally wound around the outer layer of the first yarn, and the color gradient wrapped yarn circulates in a color gradient along the axial direction; in a set of color gradient cycles, more than three winding yarn segments with different winding densities are included, and the winding density is the winding density of the second yarn.

[0006] Specifically, the winding density of the present invention refers to the number of windings of the second yarn per unit length in the color gradient wrapped yarn. When the winding density is large, because the second yarn has a high coverage rate on the first yarn, the gradient wrapped yarn more reflects the color of the second yarn, and when the winding density is small, the covering effect of the second yarn on the first yarn is weakened, and the color of the first yarn begins to be more reflected in the color gradient wrapped yarn. Because there are at least three sections of different winding densities on the color gradient wrapped yarn, there will be at least three sections of yarns with different shades of color, thereby achieving a gradient effect.

[0007] In some embodiments of the present invention, in a set of color gradient cycles, the winding yarn segment A, the winding yarn segment B and the winding yarn segment C are included in sequence; the winding density of the winding yarn segment A is greater than the winding density of the winding yarn segment B and greater than the winding density of the winding yarn segment C, or the winding density of the winding yarn segment A is less than the winding density of the winding yarn segment B and less than the winding density of the winding yarn segment C.

[0008] In some embodiments of the present invention, in a set of color gradient cycles, the winding yarn segment C is also connected to a winding yarn segment D; the winding density of the winding yarn segment A is greater than the winding density of the winding yarn segment D and greater than the winding density of the winding yarn segment C, or the winding density of the winding yarn segment A is less than the winding density of the winding yarn segment D and less than the winding density of the winding yarn segment C.

[0009] Specifically, the three winding yarn segments form a group of color gradient cycles. After completing a complete process of winding yarn segments A to B to C, the next cycle will begin (for example, ABCABC... and so on). There will be a problem of a sudden increase or decrease in the winding density from C to A. This sudden increase or decrease in winding density can easily make the entire gradient transition uneven and the gradient style unrealistic. In addition, the conventional spinning machine used in the present invention achieves different winding densities through the speed ratio between the rotation speed of the hollow spindle and the output roller, wherein the roller speed of the hollow spindle is often unchanged during the production process. This sudden increase or decrease in winding density will cause a sudden change in the output roller speed and the front roller speed, which will cause a large production burden and adversely affect the service life of the equipment and the yarn quality. Therefore, adding a winding yarn segment D will form a more effective transition, making the gradient softer and reducing machine damage.

[0010] In some embodiments of the present invention, the winding density of the winding yarn segment D is the same as or different from the winding density of the winding yarn segment B.

[0011] In some embodiments of the present invention, a transitional winding yarn segment is provided between adjacent winding yarn segments, the winding density of the transitional winding yarn segment is between the winding densities of adjacent winding yarn segments, and the length of the transitional winding yarn segment is 10-100 cm.

[0012] Specifically, due to the different winding densities between two adjacent winding yarn segments, there will be a large difference in color, and the large difference is likely to cause excessive gradient and breakage, and the color gradient is likely to be uncoordinated. Therefore, providing a transition winding yarn segment between two adjacent winding yarn segments can make the color gradient more coordinated.

[0013] In some embodiments of the present invention, the transition winding yarn segment can be designed between every two adjacent winding yarn segments, or can be designed only between a few adjacent winding yarn segments (not designed between individual adjacent winding yarn segments), and can be designed according to the required gradient effect.

[0014] In some embodiments of the present invention, the ratio of the linear density of the second yarn to the linear density of the first yarn is (0.1-0.8):1.

[0015] Specifically, when the second yarn is thinner than the first yarn, at a lower winding density, the first yarn accounts for a high proportion, and the color of the first yarn will be mainly displayed; and by increasing the winding density, even if the second yarn is thinner, it can still wrap the first yarn well, thereby reflecting the color of the second yarn.

[0016] When the linear density of the second yarn is lower than 0.1 times of that of the first yarn, because the second yarn is too thin, the second yarn may break during the winding process, affecting the production efficiency and product quality; and in order to achieve a higher wrapping effect, a very large winding density is required, which greatly reduces the production efficiency, and because the winding is too dense, the second yarn is seriously skewed, causing the fabric to be skewed.

[0017] When the linear density of the second yarn is higher than 0.8 times that of the first yarn, even if an extremely low winding density is used, the color of the first yarn will be covered due to the high proportion of the second yarn, resulting in a smaller gradient range.

[0018] In some embodiments of the present invention, the ratio of the length of the second yarn to the length of the first yarn is (1.05-2.5):1.

[0019] Specifically, the length ratio between the second yarn and the first yarn is affected by both the thickness of the yarn and the winding density. The thicker the yarn and the greater the winding density, the greater the length ratio between the second yarn and the first yarn; when the length ratio between the second yarn and the first yarn is less than 1.05, the yarn is too thin and the winding density is small, the second yarn and the first yarn are weakly bonded, and the yarn structure is unstable.

[0020] When the length ratio between the second yarn and the first yarn is greater than 2.5, the yarn is relatively thick and the winding density is large. The thicker the yarn, the greater the stiffness, the greater the winding density, and the greater the stiffness of the yarn, which will seriously affect the feel of the yarn.

[0021] In some embodiments of the present invention, the winding density is 200-3000 turns / m.

[0022] Specifically, when the winding density is lower than 200 turns / m, because the winding density is too small, the first yarn and the second yarn will not be tightly held, resulting in an unstable position of the second yarn, which is very easy to shift during the weaving process, thus affecting the gradient effect; and when the winding density is less than 200 turns / m, the color rendering effect of the first yarn is minimally affected by the winding density, and basically has no effect on expanding the gradient range.

[0023] When the winding density is greater than 3000 turns / m, firstly, the excessively large winding density will cause a large angle between the axis of the second yarn and the color gradient wrapped yarn, and the second yarn will be seriously tilted, which will cause the fabric made of the color gradient wrapped yarn to appear skewed; in addition, a larger winding density will make the yarn feel harder, affecting the clothing use effect of the yarn; and a larger winding density will greatly reduce production efficiency, thereby increasing the production cost of the yarn.

[0024] In some embodiments of the present invention, the length of each winding yarn segment can be designed arbitrarily, and the length of the winding yarn segments can be equal or unequal; if the length of the winding yarn segments is equal, the gradient effect will be more balanced and uniform, and if the length of the winding yarn segments is unequal, the gradient style will be more varied.

[0025] In some embodiments of the present invention, in a color gradient cycle, the color gradient wrapped yarn includes N winding yarn segments along the axial direction, with N / 2+1 as the dividing line, the winding density of the first half increases or decreases, and the winding density of the second half decreases or increases.

[0026] In some embodiments of the present invention, in a set of color gradient cycles, the color gradient wrapped yarn includes 6-14 winding yarn segments with different winding densities along the axial direction. When the color gradient wrapped yarn has 6-14 winding yarn segments, it has a better gradient effect. When there are less than 6 winding yarn segments, the gradient span is large and the gradient transition is not obvious; when there are more than 14 winding yarn segments, the difference between the winding yarn segments is not significant, and the change between adjacent winding yarn segments is not significant.

[0027] In some embodiments of the present invention, the winding density may be changed continuously in a linear change and / or a parabolic change, and such a gradual transition may be softer.

[0028] Specifically, the formula for the linear change is Y 1 =a 1 X 1 +b 1 ; Among them, b 1 represents the initial winding density, X 1 Indicates the length of the produced yarn, Y 1 Indicates that in X 1The winding density under the length. In the specific operation, first set b on the device 1 value (such as 500 turns / m), and then set the length X 1 (such as 10m), and the winding density Y at the corresponding length 1 (800 laps / m), based on the above three data we can get a 1 :[(800-500) / 10=30], the equipment will obtain the winding density at different positions according to this line, and prepare a gradual yarn with winding density changing along a straight line.

[0029] The formula for parabola change is Y 2 =b 2 -a 2 X 2 2 ; Among them, b 2 represents the initial winding density, X 2 Indicates the length of the produced yarn, Y 2 Indicates that in X 2 The winding density under the length. The same as the above linear change operation, by setting the b 2 , X 2 and Y 2 The value is calculated according to the formula 2 value.

[0030] In some embodiments of the present invention, the color gradient wrapped yarn is prepared by a preparation method comprising the following steps:

[0031] Taking a fancy twisting machine as an example, the first yarn is passed through a hollow spindle, the second yarn is unwound from a yarn tube outside the hollow spindle and fed from the top of the hollow spindle to pass through the hollow spindle, the hollow spindle rotates, and the second yarn is wound around the first yarn to form a whole and output by the output roller; the rotation speed of the hollow spindle is fixed, and the speed of the output roller is changed, thereby changing the winding density of the second yarn.

[0032] For example, the hollow spindle speed is 1000r / min, and the output speed in the first stage is 10m / min. At this time, 1000 turns of the second yarn are wound on 10m of yarn in 1min, and the winding density is 100 turns / m; the output speed in the second stage is 5m / min, so in 1min, 1000 turns of the second yarn are wound on 5m of yarn, and the winding density is 200 turns / m.

[0033] A second aspect of the present invention provides a color gradient fabric, comprising the color gradient wrapped yarn described in the first aspect of the present invention.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] 1) The color gradient wrapped yarn provided by the present invention has a controllable length of color gradient cycle, and can have gradient color effects of different lengths. The winding density of multiple (more than three) winding yarn segments can be changed to achieve different wrapping effects according to the needs of the color gradient effect, thereby achieving gradient effects of different colors, and the gradient effects are coordinated and the color styles are varied.

[0036] 2) The color gradient wrapped yarn provided by the present invention has a second yarn wrapped around the outer layer of the first yarn. Per unit length, the outer layer wrapped yarn (second yarn) can have a longer length than the inner layer core yarn (first yarn), thereby achieving better coating and stable yarn structure.

[0037] 3) The color gradient wrapped yarn provided by the present invention can be directly used to prepare gradient color fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a physical picture of the color gradient wrapped yarn prepared in Example 2 of the present invention;

[0039] Figure 2 This is a physical picture of the color gradient fabric made from the color gradient wrapped yarn of Example 6. DETAILED DESCRIPTION

[0040] In order to make the technical scheme of the present invention more clearly understood by those skilled in the art, the following embodiments are listed for illustration. It should be pointed out that the following embodiments do not limit the protection scope of the present invention.

[0041] Unless otherwise specified, the yarn or device used in the present invention can be obtained from conventional commercial sources or by existing known methods.

[0042] Example 1

[0043] A color gradient wrapped yarn, comprising a 90 tex, white first yarn and a 15 tex, red second yarn, the second yarn being spirally wound around the outer layer of the first yarn, the color gradient wrapped yarn circulates in a color gradient along the axial direction;

[0044] In a color gradient cycle, there are three winding yarn segments (A, B, and C respectively), among which the winding density of winding yarn segment A is 300 turns / m, the winding density of winding yarn segment B is 1000 turns / m, and the winding density of winding yarn segment C is 1500 turns / m. The length of winding yarn segment A is 10m, the length of winding yarn segment B is 8m, and the length of winding yarn segment C is 10m.

[0045] Example 2

[0046] A color gradient wrapped yarn, comprising a 90 tex, white first yarn and a 15 tex, red second yarn, the second yarn being spirally wound around the outer layer of the first yarn, the color gradient wrapped yarn circulates in a color gradient along the axial direction;

[0047] refer to Figure 1 As shown, in a color gradient cycle, there are four winding yarn segments (respectively Figure 1 A, B, C, D), wherein the winding density of the winding yarn segment A is 300 turns / m, the winding density of the winding yarn segment B is 1000 turns / m, the winding density of the winding yarn segment C is 1500 turns / m, the winding density of the winding yarn segment D is 750 turns / m, the length of the winding yarn segment A is 10m, the length of the winding yarn segment B is 8m, the length of the winding yarn segment C is 10m, and the length of the winding yarn segment D is 15m.

[0048] Example 3

[0049] A color gradient wrapped yarn, comprising a 90 tex, white first yarn and a 15 tex, red second yarn, the second yarn being spirally wound around the outer layer of the first yarn, the color gradient wrapped yarn circulates in a color gradient along the axial direction;

[0050] In one color gradient cycle, there are four winding yarn segments (A, B, C, and D) in sequence, wherein the winding density of the winding yarn segment A is 300 turns / m, the winding density of the winding yarn segment B is 1000 turns / m, the winding density of the winding yarn segment C is 1500 turns / m, and the winding density of the winding yarn segment D is 750 turns / m. The length of the winding yarn segment A is 10m, the length of the winding yarn segment B is 8m, the length of the winding yarn segment C is 10m, and the length of the winding yarn segment D is 15m.

[0051] There is a transitional winding yarn segment E1 between the winding yarn segment A and the winding yarn segment B, the winding density of E1 is 500 turns / m, and the length is 30 cm; there is a transitional winding yarn segment E2 between the winding yarn segment B and the winding yarn segment C, the winding density of E2 is 1300 turns / m, and the length is 40 cm; there is a transitional winding yarn segment E3 between the winding yarn segment D in the previous color gradient cycle and the winding yarn segment A in the next color gradient cycle, the winding density of E3 is 500 turns / m, and the length is 20 cm.

[0052] Example 4

[0053] A color gradient wrapped yarn, comprising a 90 tex, white first yarn and a 15 tex, red second yarn, the second yarn being spirally wound around the outer layer of the first yarn, the color gradient wrapped yarn circulates in a color gradient along the axial direction;

[0054] In a color gradient cycle, there are eight winding yarn segments in sequence (A, B, C, D, E, F, G, and H respectively), among which the winding density of winding yarn segment A is 300 turns / m, the winding density of winding yarn segment B is 600 turns / m, the winding density of winding yarn segment C is 1000 turns / m, the winding density of winding yarn segment D is 1300 turns / m, the winding density of winding yarn segment E is 1500 turns / m, the winding density of winding yarn segment F is 1350 turns / m, the winding density of winding yarn segment G is 1050 turns / m, and the winding density of winding yarn segment H is 700 turns / m. The length of winding yarn segment A is 10m, the length of winding yarn segment B is 8m, the length of winding yarn segment C is 10m, the length of winding yarn segment D is 15m, the length of winding yarn segment E is 10m, the length of winding yarn segment F is 8m, the length of winding yarn segment G is 10m, and the length of winding yarn segment H is 15m.

[0055] Example 5

[0056] A color gradient wrapped yarn, comprising a 90 tex, white first yarn and a 15 tex, red second yarn, the second yarn being spirally wound around the outer layer of the first yarn, the color gradient wrapped yarn circulates in a color gradient along the axial direction;

[0057] In a color gradient cycle, it is divided into two stages; in the first stage, the initial winding density of the yarn segment is 300 turns / m, the final winding density of the yarn segment is 1500 turns / m, the length from the initial yarn segment to the final yarn segment is 30m, and the winding density is calculated according to Y 1 =40X 1 +300(Y 1 =a 1 X 1 +b 1 ), the winding density of the yarn segment changes from 300 turns / m to 1500 turns / m over a length of 30m; then in the second stage, the initial winding density of the yarn segment is 1500 turns / m, the final winding density of the yarn segment is 300 turns / m, the length from the initial yarn segment to the final yarn segment is 20m, and the winding density is adjusted according to Y 2 =1500-3X 2 2 (Y 2 =b 2 -a 2 X 2 2 )’s parabolic variation.

[0058] Example 6

[0059] A color gradient wrapped yarn, comprising a 90 tex, white first yarn and a 15 tex, red second yarn, the second yarn being spirally wound around the outer layer of the first yarn, the color gradient wrapped yarn circulates in a color gradient along the axial direction;

[0060] In a color gradient cycle, there are ten winding yarn segments (A, B, C, D, E, F, G, H, I, and J respectively), among which the winding density of winding yarn segment A is 250 turns / m, the winding density of winding yarn segment B is 500 turns / m, the winding density of winding yarn segment C is 800 turns / m, the winding density of winding yarn segment D is 1200 turns / m, the winding density of winding yarn segment E is 2000 turns / m, the winding density of winding yarn segment F is 3000 turns / m, the winding density of winding yarn segment G is 2000 turns / m, the winding density of winding yarn segment H is 1200 turns / m, the winding density of winding yarn segment I is 800 turns / m, and the winding density of winding yarn segment J is 500 turns / m. The length of each winding yarn segment is 10m.

[0061] The color gradient wrapped yarn prepared in Example 6 is used to prepare a color gradient fabric, such as Figure 2 As shown, you can see that the color gradient of the fabric is coordinated and uniform.

[0062] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A color gradient wrapped yarn, characterized in that: It includes a first yarn and a second yarn, the first yarn and the second yarn have different colors, the second yarn is spirally wound around the outer layer of the first yarn, and the color gradient wrapped yarn circulates along the axial direction according to the color gradient; in a group of color gradient cycles, it includes more than three winding yarn segments with different winding densities, and the winding density is the winding density of the second yarn.

2. The color gradient wrapped yarn according to claim 1, characterized in that: In a set of color gradient cycles, the winding yarn segment A, the winding yarn segment B and the winding yarn segment C are included in sequence; the winding density of the winding yarn segment A is greater than the winding density of the winding yarn segment B and greater than the winding density of the winding yarn segment C, or the winding density of the winding yarn segment A is less than the winding density of the winding yarn segment B and less than the winding density of the winding yarn segment C.

3. The color gradient wrapped yarn according to claim 2, characterized in that: In a set of color gradient cycles, the winding yarn segment C is also connected to a winding yarn segment D; the winding density of the winding yarn segment A is greater than the winding density of the winding yarn segment D and greater than the winding density of the winding yarn segment C, or the winding density of the winding yarn segment A is less than the winding density of the winding yarn segment D and less than the winding density of the winding yarn segment C.

4. The color gradient wrapped yarn according to claim 3, characterized in that: The winding density of the winding yarn segment D is the same as or different from the winding density of the winding yarn segment B.

5. The color gradient wrapped yarn according to claim 1, characterized in that: A transitional winding yarn segment is provided between adjacent winding yarn segments, the winding density of the transitional winding yarn segment is between the winding densities of adjacent winding yarn segments, and the length of the transitional winding yarn segment is 10-100 cm.

6. The color gradient wrapped yarn according to claim 1, characterized in that: The color gradient cycle includes 6 to 14 winding yarn segments with different winding densities.

7. The color gradient wrapped yarn according to claim 1, characterized in that: The ratio of the linear density of the second yarn to the linear density of the first yarn is (0.1-0.8):

1.

8. The color gradient wrapped yarn according to claim 1, characterized in that: The ratio of the length of the second yarn to the length of the first yarn is (1.05-2.5):

1.

9. The color gradient wrapped yarn according to claim 1, characterized in that: The winding density is 200-3000 turns / m.

10. A color gradient fabric, characterized in that: The invention comprises the color gradient wrapped yarn according to any one of claims 1 to 9.

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