CN111519335B

CN111519335B - Color-changing knitted fabric

Info

Publication number: CN111519335B
Application number: CN201910103063.2A
Authority: CN
Inventors: 董朋; 魏晓峰; 蔡东照
Original assignee: Toray Fibers and Textiles Research Laboratories China Co Ltd
Current assignee: Toray Fibers and Textiles Research Laboratories China Co Ltd
Priority date: 2019-02-01
Filing date: 2019-02-01
Publication date: 2023-02-07
Anticipated expiration: 2039-02-01
Also published as: CN111519335A

Abstract

The invention discloses a color-changing knitted fabric. The fabric comprises a surface and an inner surface, wherein the surface comprises a coloring yarn A and a coloring yarn B, the coloring yarn A is higher than the coloring yarn B by 20 um-300 um in the transverse direction of the knitted fabric, and the occupied area ratio of the coloring yarn A is smaller than that of the coloring yarn B. The color-changing knitted fabric disclosed by the invention uses the non-color-changing yarns, and the obtained fabric is rich and variable in color, good in color development, stable in physical property and low in cost through reasonable yarn configuration, and can be widely used for manufacturing leisure fabric, sports fabric, underwear, swimwear, pajamas and other clothes.

Description

Color-changing knitted fabric

Technical Field

The invention relates to a knitted fabric, in particular to a color-changing knitted fabric for clothes.

Background

Along with the increasing living standard of people, the requirement on the appearance of the fabric is higher and higher, and the fabric with gorgeous colors can be favored by people. The color of the fabric can be realized by means of colored yarn weaving and post-processing dyeing generally, but the defects that once the color of the fabric is fixed, the color is unchangeable and the color is stiff exist. Therefore, fabric developers are dedicated to developing the color-changeable knitted fabric for clothes, which changes the color of the fabric along with the change of the visual angle.

For example, patent document CN201510079877.9 discloses a color-changeable knitted fabric and a preparation method thereof, which is obtained by interweaving color-changeable fiber yarns and common fiber yarns. However, due to the addition of the color-changing fiber yarn, the fabric effect is limited by the color spectrum, color stability, yarn physical properties and the like of the color-changing fiber yarn, and the performances are inferior to those of the common yarn, so that the stability of the final fabric is poor, and the cost is increased.

For another example, patent document CN201810316701.4 discloses a jacquard Gu Kamian material with a color changing function and a manufacturing method thereof, and a color-changeable warp-knitted fabric is obtained through the special tissue design. Because a plurality of guide columns and guide grooves are arranged on the jacquard bottom layer of the fabric, the fabric has strong concave-convex sense, the finished product has heavy and not smooth surface, although the fabric has a color-changing effect, the jacquard is rarely used for clothing, the jacquard is a special type, the jacquard has the defects of small market storage amount, low weaving speed, high weaving cost and the like, and the production cost is very high.

Disclosure of Invention

The invention aims to provide a color-changeable knitted fabric for clothes.

The technical solution of the invention is as follows:

the utility model provides a knitted fabric discolours, includes surface and the inside, includes colored yarn A and colored yarn B on the surface, and colored yarn A is higher than colored yarn B by 20um ~ 300um in knitted fabric's transverse direction, and is less than colored yarn B on the surface to colored yarn A area ratio.

The color-changing knitted fabric disclosed by the invention uses the non-color-changing yarns, and the obtained fabric is rich and variable in color, good in color development, stable in physical property and low in cost through reasonable yarn configuration, and can be widely used for manufacturing leisure fabric, sports fabric, underwear, swimwear, pajamas and other clothes.

Detailed Description

The utility model provides a knitted fabric discolours, includes surface and the inside, wherein includes on the surface that painted yarn A and painted yarn B, painted yarn A is higher than painted yarn B by 20um ~ 300um in knitted fabric's transverse direction, and is less than painted yarn B on the surface that painted yarn A area ratio.

The color changing effect of the fabric is realized by changing the occupancy ratio of various colors entering the sight line along with the change of the visual angle. Therefore, in order to realize the effect of the fabric color change, the colored yarn a and the colored yarn B are included on the surface of the fabric.

Meanwhile, when the visual angle is changed from a direct-view fabric to an oblique-view fabric, the concave coloring yarns B on the surface of the fabric are shielded by the convex coloring yarns A on the surface of the fabric, and the convex coloring yarns A seen by the sight are more and more along with the increase of the oblique-view angle, so that the fabric generates a color changing effect. Therefore, the colored yarn A is 20um to 300um higher than the colored yarn B in the transverse direction of the knitted fabric. The transverse direction herein specifically means a direction perpendicular to the fabric knitting direction. The height of the coloring yarn A is less than 20um than that of the coloring yarn B, and when the fabric is viewed obliquely, the effect that the coloring yarn A shields the coloring yarn B at the convex part on the surface of the fabric is weak, and the color change effect of the fabric is poor; when the height of the coloring yarn A is more than 300um than that of the coloring yarn B, although the color change effect of the fabric is excellent, the surface of the fabric is concave-convex, the hand feeling is rough and not soft, and the fabric is not suitable for clothes. Preferably, the height of the colored yarn a is higher than that of the colored yarn B by 40 to 200um, more preferably 40 to 100um in the transverse direction of the knitted fabric.

In addition, the area ratio of the colored yarn A on the surface of the fabric is smaller than that of the colored yarn B in consideration of the color change effect. When the fabric is directly viewed, the surface area occupied by the coloring yarns B on the surface of the fabric is large, and the color of the fabric is more inclined to the color of the yarns B; when the fabric is obliquely viewed, the colored yarns A at the bulges on the surface of the fabric occupy the fabric and gradually increase, and the color of the fabric is more and more inclined to the color of the yarns A. The fabric has strong color change and excellent color change effect by limiting the height difference and the area difference of the surface coloring yarn A and the coloring yarn B.

In order to improve the color change effect of the fabric, the surface area ratio of the colored yarn A is preferably 10-45%, and more preferably 15-35%. The surface area ratio of the coloring yarn A is less than 10%, the color of the fabric tends to be more toward the coloring yarn B when the fabric is seen directly, but the coloring yarn A at the convex part of the fabric cannot completely shield the coloring yarn B at the concave part when the fabric is seen obliquely, so that the color change effect of the fabric tends to be poor; when the surface area ratio of the colored yarn a is more than 45%, the colored yarn B in the concave part is shielded by the colored yarn a in the convex part when the fabric is obliquely viewed, and the fabric takes the color of the colored yarn a, but when the fabric is directly viewed, the color of the fabric takes the mixed color of the colored yarn a and the colored yarn B, and the color change effect of the fabric tends to be poor.

The color of the colored yarn a and the colored yarn B may affect the color change effect of the fabric, and if the color of the colored yarn a and the color of the colored yarn B are close, the color change effect of the fabric may not be obvious, and therefore, the difference in color between the colored yarn a and the colored yarn B is preferably 10 or more, more preferably 20 or more.

The colored yarn a and the colored yarn B may be knitted directly with colored yarn, or the yarn may be colored by dyeing.

Preferably, the fineness of the coloring yarn a is smaller than that of the coloring yarn B, in consideration of the possibility that the color change effect of the direct view of the fabric is affected when the fineness of the coloring yarn a is greater than or equal to that of the coloring yarn B.

Preferably, the fineness of the colored yarn A is 11dtex to 84dtex. The titer of the colored yarn A is less than 11dtex, the yarn cost tends to be high and the knitting is difficult, and the height of a convex part formed by the colored yarn A is possibly small due to the thin yarn, so that the color change effect of the fabric in the squint direction can be influenced; the fineness of the colored yarn A is larger than 84dtex, which is not beneficial to controlling the area of the surface of the fabric occupied by the colored yarn A, possibly influencing the color change effect of the direct vision of the fabric, and the height of a convex part formed by the colored yarn A is possibly too large due to thicker yarn, possibly influencing the roughness of the surface of the fabric.

Preferably, the fineness of the colored yarn B is 33dtex to 111dtex. The titer of the coloring yarn B is less than 33dtex, the yarn cost is higher, and the covering area of a concave part formed by the coloring yarn B is smaller due to the thinner yarn, so that the color change effect of the direct vision of the fabric can be influenced; the fineness of the colored yarn B is larger than 111dtex, and the fabric tends to be too thick and heavy.

Preferably, the knitted fabric is a warp knitting structure, and the knitting traversing distance of the coloring yarn A is smaller than that of the coloring yarn B. This is because the warp knitting structure has a multilayer structure, the color-changing stereoscopic impression is stronger than that of the weft knitting structure, and the color-changing effect is better when the knitting traverse distance of the coloring yarn a is smaller than that of the coloring yarn B.

Preferably, the colored yarn a is a chain stitch and the colored yarn B is a warp pile stitch, and more preferably, the colored yarn a and the colored yarn B are knitted in the same direction. This is because the color-changing effect is better when the traversing distance of the colored yarn A during weaving is 0.

Preferably, the colored yarn a is a warp flat structure, and the colored yarn B is a warp pile structure. The method considers that when the coloring yarn A adopts a warp flat structure, the weaving traversing distance is 1, so that the structure effect is more stable, and the color changing effect is better.

In consideration of the requirements of the hand feeling and the appearance of the fabric, other yarns can be woven into the fabric, but the surface area ratio of the other yarns is not more than that of the coloring yarn A.

The color-changing knitted fabric can be used for making leisure fabric, sports fabric, underwear, swimwear, pajamas and other clothes.

The production method of the color-changing knitted fabric comprises the following steps:

(1) Manufacture of grey cloth

The gray fabric is knitted on a common weft knitting machine or warp knitting machine, the surface of the fabric comprises a yarn A and a yarn B, and the yarn A and the yarn B can be fed into a draft simultaneously or respectively during weft knitting; when warp knitted, yarn a may be knitted as a warp knit face comb and yarn B may be knitted as a warp knit mid comb or bottom comb. Yarn a and yarn B may be dyed yarns or dyed yarns.

The above-mentioned conventional weft knitting machine may be a single-sided or double-sided weft knitting machine such as 28G, 32G, 36G, etc., but is not limited to the above-mentioned ones. The normal warp knitting machine may be a single needle bed warp knitting machine such as 28G, 32G, 36G, etc., but is not limited to the above-mentioned ones.

(2) Pretreatment and dyeing process (optional)

Wherein the pretreatment and dyeing conditions are conventional conditions.

When the yarn a and/or B is obtained by dyeing, a dyeing process is used.

(3) After finishing

The temperature of the after-finishing processing is 150-180 ℃, and the cloth speed on the setting machine is 15-25 m/min. The type of the resin used for the post-treatment is not particularly limited, and may be a silicone water-absorbing resin, a non-silicone resin, or the like.

In addition, appropriate agents can be added in each engineering according to requirements, for example, scouring agents, bleaching agents and the like can be added in the pretreatment process, and hydrophilic agents, antistatic agents, neutralizing acids and the like can be added in the post-treatment process. The scouring agent, the hydrophilic agent and the like used in the present invention may be commercially available products as they are, and the amount of each agent is preferably 0.1 to 20.0g/L.

The method for measuring the physical property parameters in the present invention is as follows.

(1) Height difference of surface yarn

Any 5 pieces of fabric 1cm by 1cm are cut along the direction perpendicular to the fabric knitting direction, if the fabric is weft-knitted, the fabric is cut along the junction of the left and right loops, and if the fabric is warp-knitted, the fabric is cut along the junction of the upper and lower extension lines. The cut portions were observed with a KEYENCE VHX-2000C microscope, and the microscope magnification was adjusted to 150 times to adjust the imaging brightness. The colored yarn located at the concave is defined as colored yarn B and as a base point, the other colored yarn located at the convex is defined as colored yarn a, and the distance from the base point to colored yarn a is measured. And 5, taking an average value of the test results, and defining the average value as the height difference of the coloring yarn A and the coloring yarn B in the transverse direction of the surface of the fabric.

(2) Surface yarn area ratio

The surface 5 of any sampled 20cm x 20cm fabric was tested by using a KEYENCE (KEYENCE) VHX-2000C microscope, an opaque glass substrate was selected, direct light irradiation was selected, the surface was placed at an observation position, the magnification of the microscope was adjusted to 100 times, and the shooting brightness was adjusted. And directly measuring the area ratio of the colored yarn A by utilizing the area test function of the microscope and selecting a color area test. And 5, averaging the test results, and defining the average as the area ratio of the colored yarns A on the surface of the fabric.

(3) Color difference

And (3) separating and classifying the coloring yarn A and the coloring yarn B on the fabric, and testing the coloring yarn A and the coloring yarn B by using a datacolor650 spectrocolorimeter respectively, so that the color difference value of the coloring yarn A and the coloring yarn B can be obtained.

(4) Color change effect

The scoring evaluation is carried out by 10 persons, and the better the color change effect is, the higher the score is, 10 persons each. The total score is more than 80 points, and the color change effect of the fabric is excellent; the total score is less than 80 minutes when the score is not more than 60 minutes, and the color change effect of the fabric is good; the total score is less than 60 points when the color is not more than 40 points, and the color change effect of the fabric is general; the total score is less than 40 points, and the color change effect of the fabric is poor.

(5) Soft comfort

The scoring evaluation is carried out by 10 persons, and each person has 10 scores, the higher the softness and comfort of the fabric is, the higher the score is. The total score is more than 80 points, and the fabric has soft and comfortable hand feeling and is defined as excellent; the total score is less than or equal to 60 points and less than 80 points, and the softness and comfort of the fabric are comfortable and are defined as good; the total score is more than or equal to 40 points and less than 60 points, and the softness and comfort of the fabric are general and are defined as general; the total score was less than 40 points and the softness comfort of the fabric was poor, defined as poor.

The present invention will be further described with reference to examples and comparative examples.

Example 1

The coloring yarn A adopts 33dtex-24 f-cation FDY, the surface area ratio is 25 percent, the chain knitting structure is adopted, and the knitting transverse movement is 0 needle; the coloring yarn B is 44dtex-34 f-nylon FDY, the surface area ratio is 75%, the knitting traverse is 2 needles through a velvet structure, the coloring yarn A and the coloring yarn B are knitted in the same direction, the knitting traverse needle pitch of the coloring yarn A is smaller than that of the coloring yarn B, the coloring yarn A is 110 microns higher than that of the coloring yarn B in the transverse direction of the fabric, and the color difference value of the coloring yarn A and the coloring yarn B is 50.

The properties of the obtained fabric are detailed in table 1.

Example 2

The coloring yarn A adopts 22dtex-24 f-cation FDY, the surface area ratio is 15 percent, the chain knitting structure is adopted, and the knitting transverse movement is 0 needle; the coloring yarn B is 33dtex-24 f-nylon FDY, the surface area ratio is 85%, the knitting traverse is 2 needles through a velvet structure, the coloring yarn A and the coloring yarn B are knitted in the same direction, the knitting traverse needle pitch of the coloring yarn A is smaller than that of the coloring yarn B, the coloring yarn A is 40 microns higher than that of the coloring yarn B in the transverse direction of the fabric, and the color difference value of the coloring yarn A and the coloring yarn B is 20.

The properties of the obtained fabric are detailed in table 1.

Example 3

The coloring yarn A adopts 56dtex-24 f-cation FDY, the surface area ratio is 35 percent, the warp is flat, and the weaving traverse is 1 needle; the coloring yarn B is 78dtex-24 f-nylon FDY, the surface area ratio is 65%, the knitting traverse is 2 needles through a velvet structure, the coloring yarn A and the coloring yarn B are reversely knitted, the knitting traverse needle pitch of the coloring yarn A is smaller than that of the coloring yarn B, the coloring yarn A is 200 microns higher than that of the coloring yarn B in the transverse direction of the fabric, and the color difference value of the coloring yarn A and the coloring yarn B is 70.

The properties of the obtained fabric are detailed in table 1.

Example 4

The same as example 2 is applied to the case where the colored yarn A is 20um higher than the colored yarn B in the transverse direction of the fabric.

The properties of the obtained fabric are detailed in table 1.

Example 5

The same as in example 3 is applied to the case where the colored yarn A is 300um higher than the colored yarn B in the transverse direction of the fabric.

The properties of the obtained fabric are detailed in table 1.

Example 6

The surface area ratio of the colored yarn a was 10% and the surface area ratio of the colored yarn B was 90%, as in example 1.

The properties of the obtained fabric are detailed in table 1.

Example 7

The same as example 5 was repeated except that the colored yarn a accounted for 45% of the surface area ratio and the colored yarn B accounted for 55% of the surface area ratio.

The properties of the obtained fabric are detailed in table 1.

Example 8

The same as example 4 was repeated except that the colored yarn a accounted for 8% of the surface area ratio and the colored yarn B accounted for 92% of the surface area ratio.

The properties of the obtained fabric are detailed in table 1.

Example 9

The same as example 3 was repeated except that the colored yarn a accounted for 48% of the surface area ratio and the colored yarn B accounted for 52% of the surface area ratio.

The properties of the obtained fabric are detailed in table 1.

Example 10

The difference in color between colored yarn a and colored yarn B was 10, as in example 6.

The properties of the obtained fabric are detailed in table 1.

Example 11

The difference in color between colored yarn a and colored yarn B was 8, as in example 2.

The properties of the obtained fabric are detailed in table 1.

Example 12

Colored yarn A was 111dtex-36 f-cation FDY as in example 3.

The properties of the obtained fabric are detailed in table 1.

Example 13

Colored yarn B was 133dtex-48 f-nylon FDY, as shown in example 9.

The properties of the obtained fabric are detailed in table 1.

Example 14

The colored yarn A adopts a warp pile structure, and the weaving and traversing is 2 needles; the colored yarn B was a warp-flat knit having a knitting traverse of 1 needle, as in example 3.

The properties of the obtained fabric are detailed in table 1.

Example 15

The colored yarn a and the colored yarn B are woven in opposite directions, as in example 2.

The properties of the obtained fabric are detailed in table 1.

Example 16

The fabric is knitted by weft knitting, and the coloring yarn A adopts a weft plain weave; colored yarn B was a weft-plain weave, as in example 2.

The properties of the obtained fabric are detailed in table 1.

Comparative example 1

The same as example 2 is applied to the case where the dyed yarn A is 15um higher than the dyed yarn B in the transverse direction of the fabric.

The properties of the obtained fabric are detailed in table 1.

Comparative example 2

The same as example 3 is applied to the case where the dyed yarn A is 350um higher than the dyed yarn B in the transverse direction of the fabric.

The properties of the obtained fabric are detailed in table 1.

Comparative example 3

The same as example 7 was repeated except that the colored yarn a accounted for 65% of the surface area ratio and the colored yarn a accounted for 35% of the surface area ratio.

The properties of the obtained fabric are detailed in table 1.

TABLE 1

As can be seen from table 1, it is,

(1) As is clear from example 4 and example 2, the knitted fabric having a difference in height between the colored yarn a and the colored yarn B of 20um in the fabric transverse direction had a lower color change effect than the knitted fabric having a difference in height between the colored yarn a and the colored yarn B of 40um under the same conditions.

(2) As is clear from example 5 and example 3, the knitted fabric having a difference in height between the colored yarn a and the colored yarn B of 300um in the fabric transverse direction has a softer and more comfortable effect than the knitted fabric having a difference in height between the colored yarn a and the colored yarn B of 200um under the same conditions.

(3) It is understood from example 6 and example 1 that, under the same conditions, the knitted fabric having a colored yarn a with a surface area ratio of 10% has a color change effect lower than that of the knitted fabric having a colored yarn a with a surface area ratio of 25%.

(4) As is clear from example 7 and example 5, the color-changing effect of the knitted fabric having a colored yarn a occupying 45% of the surface area ratio is inferior to that of the knitted fabric having a colored yarn a occupying 35% of the surface area ratio under the same conditions.

(5) As is clear from example 8 and example 4, the color-changing effect of the knitted fabric having a colored yarn a occupying 8% of the surface area ratio is inferior to that of the knitted fabric having a colored yarn a occupying 15% of the surface area ratio under the same conditions.

(6) It is understood from example 9 and example 3 that the color-changing effect of the knitted fabric having a surface area ratio of the colored yarn a of 48% is far lower than that of the knitted fabric having a surface area ratio of the colored yarn a of 35% under the same conditions.

(7) As is clear from example 10 and example 6, the knitted fabric having a difference in color between colored yarn a and colored yarn B of 10 had a lower color change effect than the knitted fabric having a difference in color between colored yarn a and colored yarn B of 50 under the same conditions.

(8) As is clear from example 11 and example 2, the knitted fabric having a difference in color between colored yarn a and colored yarn B of 8 had a much lower color-changing effect than the knitted fabric having a difference in color between colored yarn a and colored yarn B of 20 under the same conditions.

(9) As is clear from example 12 and example 3, the knitted fabric with the fineness of the colored yarn a of 111dtex and the knitted fabric with the fineness of 56dtex are far less effective in softness and comfort than the knitted fabric with the same condition.

(10) From example 13 and example 9, it is clear that the fabric having a fineness of 133dtex for the colored yarn B is much less soft and comfortable than the fabric having a fineness of 78dtex for the colored yarn B under the same conditions.

(11) It is understood from examples 14 and 3 that the color-changing effect of the knitted fabric having the knitting-side-stitch gauge of the color yarn a larger than that of the color yarn B is inferior to that of the knitted fabric having the knitting-side-stitch gauge of the color yarn a smaller than that of the color yarn B under the same conditions.

(12) As is clear from example 15 and example 2, the coloring yarn a and the coloring yarn B were reversely woven and the coloring yarn a and the coloring yarn B were woven in the same direction under the same conditions, and the former discoloration effect was inferior to the latter discoloration effect.

(13) As is clear from comparative example 1 and example 2, the knitted fabric having a difference in height between the colored yarn a and the colored yarn B of 15um in the fabric transverse direction has a far lower color change effect than the knitted fabric having a difference in height between the colored yarn a and the colored yarn B of 40um under the same conditions.

(14) As is clear from comparative example 2 and example 3, the knitted fabric having a difference in height between the colored yarn a and the colored yarn B of 350um in the fabric transverse direction has a much lower soft feeling effect than the knitted fabric having a difference in height between the colored yarn a and the colored yarn B of 200um under the same conditions.

(15) As is clear from comparative example 3 and example 7, the knitted fabric having a colored yarn a occupying 65% of the surface area ratio had a far lower color change effect than the knitted fabric having a colored yarn a occupying 45% of the surface area ratio under the same conditions.

Claims

1. The color-changing knitted fabric comprises a surface and an inner side, and is characterized in that: the surface comprises a coloring yarn A and a coloring yarn B, the coloring yarn A is 20-300 mu m higher than the coloring yarn B in the transverse direction of the knitted fabric, and the area ratio of the coloring yarn A on the surface is smaller than that of the coloring yarn B; the titer of the colored yarn A is smaller than that of the colored yarn B; the difference value of the colors of the colored yarn A and the colored yarn B is more than 10; the titer of the colored yarn A is 11dtex to 84dtex, and the titer of the colored yarn B is 33dtex to 111dtex; the transverse direction is perpendicular to the knitting direction of the knitted fabric.

2. The color-changing knitted fabric according to claim 1, wherein: the surface area ratio of the colored yarn A is 10-45%.

3. The color-changing knitted fabric according to claim 1 or 2, characterized in that: the knitted fabric is a warp knitting structure, and the weaving traversing distance of the coloring yarn A is smaller than that of the coloring yarn B.

4. The color-changing knitted fabric according to claim 3, wherein: the colored yarn A adopts a chain knitting structure, and the colored yarn B adopts a warp pile structure.