Dyeing assembly for polyamide yarn testing device and polyamide yarn testing device

Abstract

The utility model discloses a dyeing assembly and a nylon yarn testing device. The dyeing assembly is used for the nylon yarn testing device. The dyeing assembly comprises a first dyeing piece and a second dyeing piece, the first dyeing piece comprises a first dyeing part and a first connecting part, the first dyeing part is configured to be capable of providing a first color, the second dyeing piece comprises a second dyeing part and a second connecting part, and the second dyeing part is configured to be capable of providing a second color. The first dyed portion is in contact with the second dyed portion to provide a third color. When the nylon yarn testing device with the dyeing assembly is used for weaving nylon yarns, the dyeing assembly can be used for dyeing and marking different rolls of nylon yarns which are being woven so as to distinguish sample monomers, and the difficulty of marking for distinguishing the sample monomers in the nylon yarn coloring testing process is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nylon yarn testing, in particular to a dyeing component used for a nylon yarn testing device and a nylon yarn testing device. Background Art

[0002] Nylon yarn is widely used in the clothing manufacturing industry. In order to ensure the color quality of clothing, each roll of nylon yarn needs to be tested for coloring performance and coloring uniformity after it is processed into rolls and before it is put into use.

[0003] In the related art, for the test of the coloring performance and coloring uniformity of multiple rolls of nylon yarn, a stocking machine is first used to weave a sample monomer from the silk thread of the first roll, and then the silk thread of the first roll is manually torn off and the silk thread of the second roll is connected to the silk thread woven in the sample monomer of the first roll, and then a sample monomer is continued to be woven. The cycle is repeated in sequence to finally form a long test sample. Before the test sample is dyed for the coloring test, in order to facilitate the distinction between each section of the sample monomer, it is necessary to manually mark each section of the sample monomer. In the prior art, a marker pen is usually used to mark each section of the sample monomer, but the marking process can only be done after the sample is woven, which will cause deviations in the marking and make it difficult to distinguish the samples. Utility Model Content

[0004] The main purpose of the utility model is to provide a dyeing component for a nylon yarn testing device and a nylon yarn testing device, aiming to solve the technical problem of difficulty in distinguishing sample monomers during the nylon yarn coloring test process.

[0005] To achieve the above-mentioned purpose, the utility model provides a dyeing assembly for a nylon yarn testing device, characterized in that it comprises:

[0006] A first dyeing member, comprising a first dyeing portion and a first connecting portion, wherein the first dyeing portion is configured to provide a first color, the first dyeing portion is connected to one end of the first connecting portion, and the first connecting portion is configured to be driven to rotate around a rotation axis;

[0007] A second dyeing member, comprising a second dyeing portion and a second connecting portion, wherein the second dyeing portion is configured to provide a second color, the second dyeing portion is connected to one end of the second connecting portion, and the second connecting portion is configured to be driven to rotate around the rotation axis;

[0008] The first connecting part is hinged to the second connecting part, the first dyeing part is configured to be able to rotate around the rotation axis with the first connecting part to approach or move away from the second dyeing part, and the first dyeing part is configured to be able to contact the second dyeing part to provide a third color.

[0009] In some embodiments, the first dyeing part includes a first roller body and a first buffer member, the first buffer member is sleeved on the first roller body, and the first buffer member is configured to be able to transmit the first pigment.

[0010] In some embodiments, the first roller body has a first cavity, the first cavity is configured to store the first pigment, and the first pigment can generate the first color when released from the first cavity.

[0011] In some embodiments, the second dyeing part includes a second roller body and a second buffer member, the second buffer member is sleeved on the second roller body, and the second buffer member is configured to be able to transmit the second pigment.

[0012] In some embodiments, the second roller body has a second cavity, the second cavity is configured to store a second pigment, and the second pigment can generate the second color when released from the second cavity.

[0013] The second aspect of the utility model also provides a nylon yarn testing device, characterized in that it comprises:

[0014] A dyeing component as described in any one of the above embodiments;

[0015] a braiding machine configured to braid the nylon yarn; and

[0016] A machine base, wherein the dyeing assembly and the weaving device are arranged on the machine base;

[0017] The dyeing component is arranged at any position of the path where the nylon yarn enters the braiding device, and the dyeing component is configured to be able to dye the portion of the nylon yarn before it enters the braiding device.

[0018] In some embodiments, the nylon yarn testing device further comprises a wire assembly, wherein the wire assembly is disposed on the machine base and configured to guide the nylon yarn to the braiding device, and the dyeing assembly is disposed between the wire assembly and the braiding device.

[0019] In some embodiments, the first connecting portion is hinged to the machine base, and the first dyeing portion is configured to be able to move closer to or farther away from the nylon yarn along with the first connecting portion. When the first dyeing portion contacts the nylon yarn, the color of the nylon yarn takes on the first color.

[0020] In some embodiments, the second connecting portion is hinged to the machine base, and the second dyeing portion is configured to be able to move closer to or farther away from the nylon yarn along with the second connecting portion. When the second dyeing portion contacts the nylon yarn, the color of the nylon yarn takes on the second color.

[0021] In some embodiments, the first connecting portion is hinged to the machine base, and the first dyeing portion is configured to be able to move closer to or farther away from the nylon yarn along with the first connecting portion;

[0022] The second connecting part is hinged to the machine base, and the second dyeing part is configured to be able to move closer to or farther away from the nylon yarn along with the second connecting part;

[0023] Wherein, when the first dyeing part and the second dyeing part are in contact with the nylon yarn, the nylon yarn takes on the third color.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] In the technical solution of the utility model, the dyeing assembly for the nylon yarn testing device includes a first dyeing member and a second dyeing member. The first dyeing member includes a first dyeing portion and a first connecting portion, the first dyeing portion is configured to provide a first color, the first dyeing portion is connected to one end of the first connecting portion, and the first connecting portion is configured to be driven to rotate around the rotation axis. The second dyeing member includes a second dyeing portion and a second connecting portion, the second dyeing portion is configured to provide a second color, the second dyeing portion is connected to one end of the second connecting portion, and the second connecting portion is configured to be driven to rotate around the rotation axis. The first connecting portion is hinged to the second connecting portion, the first dyeing portion is configured to rotate around the rotation axis with the first connecting portion to approach or move away from the second dyeing portion, and the first dyeing portion is configured to contact the second dyeing portion to provide a third color. Therefore, when the nylon yarn testing device with the dyeing assembly is weaving nylon yarn, the dyeing assembly can dye the nylon yarn being woven of different rolls, so that the boundary of adjacent sample monomers woven from different rolls of nylon yarn is the first color, the second color, or the third color, so as to facilitate the distinction of sample monomers. Compared with the related art of first weaving the nylon yarn into a test sample and then marking it, the present solution provides a dyeing component that can perform dyeing and marking while the nylon yarn is being weaved, effectively reducing the difficulty of marking to distinguish sample monomers during the nylon yarn coloring test. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of the structure of a nylon yarn testing device in one embodiment of the utility model;

[0028] Figure 2This is a schematic diagram of the first state structure of the dyeing component in one embodiment of the utility model; wherein the first dyeing component and the second dyeing component do not act on the nylon yarn;

[0029] Figure 3 It is a schematic diagram of the second state structure of the dyeing component in one embodiment of the utility model; wherein the first dyeing part and the second dyeing part both act on the nylon yarn.

[0030] Description of Figure Numbers:

[0031] Nylon yarn testing device 10;

[0032] Dyeing component 100;

[0033] A first dyeing member 110;

[0034] A first dyeing unit 111; a first roller body 1111; a first buffer member 1112;

[0035] A first connecting portion 112;

[0036] A second dyeing member 120;

[0037] The second dyeing unit 121; the second roller body 1211; the second buffer member 1212;

[0038] A second connecting portion 122;

[0039] Weaver 200;

[0040] Lead wire assembly 300;

[0041] Base 400;

[0042] Nylon 20.

[0043] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] In the related art, for the test of the coloring performance and coloring uniformity of multiple rolls of nylon yarn, in order to distinguish the sample monomers woven from each roll of nylon yarn, it is time-consuming and laborious to use a marker to mark and distinguish. In addition, since the boundaries of adjacent sample monomers after weaving are seamless, manual marking is prone to marking errors. In addition, during the dyeing process of the marked test sample, the dye and the ink of the marker may chemically react, which may easily cause the color of the test sample to change or cause the test sample to be dyed unevenly.

[0046] For this reason, please see Figures 1 to 3 The utility model provides a dyeing assembly 100 for a nylon yarn testing device 10, and the dyeing assembly 100 includes a first dyeing component 110 and a second dyeing component 120. The first dyeing component 110 includes a first dyeing portion 111 and a first connecting portion 112, one end of the first connecting portion 112 is connected to the first dyeing portion 111, and the other end can be connected to other structures. In one embodiment, the first connecting portion 112 is hinged to other structures, and the first connecting portion 112 is configured to be able to rotate around its hinge, so that the first dyeing portion 111 can rotate therewith. In another embodiment, the first connecting portion 112 is slidably connected to other structures, and the first dyeing portion 111 can move with the first connecting portion 112. The second dyeing component 120 includes a second dyeing portion 121 and a second connecting portion 122, one end of the second connecting portion 122 is connected to the second dyeing portion 121, and the other end can be connected to other structures. In one embodiment, the second connecting portion 122 is hinged to other structures, and the second connecting portion 122 is configured to rotate around its hinge, so that the second dyeing portion 121 can rotate accordingly. In another embodiment, the second connecting portion 122 is slidably connected to other structures, and the second dyeing portion 121 can move with the second connecting portion 122.

[0047] Among them, the first dyeing part 111 is configured to provide a first color, and the second dyeing part 121 is configured to provide a second color. In one embodiment, the first connecting part 112 is hinged to the second connecting part 122, and the first connecting part 112 and the second connecting part 122 can rotate around their hinge (rotation axis) to get closer to or farther away from each other. It should be noted that the first connecting part 112 can rotate around its hinge alone, so that the first dyeing part 111 can get closer to or farther away from the second dyeing part 121. Similarly, the second connecting part 122 can also rotate around its hinge alone, so that the second dyeing part 121 can get closer to or farther away from the first dyeing part 111. When the first dyeing part 111 contacts the second dyeing part 121, the first color interacts with the second color to produce a third color. The first color, the second color, and the third color are different from each other. Compared with the related art in which each roll of nylon yarn is woven into a whole test sample and then marked to distinguish each sample monomer, in the present application, the nylon yarn 20 in the weaving state is dyed by the dyeing component 100, and the dyed nylon yarn 20 can form a color on the sample monomer after weaving to distinguish other sample monomers. The solution of the present application can effectively reduce the difficulty of distinguishing sample monomers and avoid the deviation of distinguishing sample monomers.

[0048] See also Figure 2 and Figure 3 The first dyeing unit 111 includes a first roller 1111 and a first buffer 1112. The first buffer 1112 is sleeved on the first roller 1111. The first buffer 1112 is configured to be able to transmit a first pigment. The first pigment acts on the nylon yarn 20 to make the nylon yarn 20 present a first color. The first roller 1111 is configured to be driven to rotate. The first buffer 1112 is configured to be a flexible material. The first buffer 1112 can reduce the friction between the nylon yarn 20 and the first dyeing unit 111. In addition, after the first buffer 1112 contacts the nylon yarn 20, the flexible first buffer 1112 can wrap the nylon yarn 20, so that the surrounding side of the nylon yarn 20 can be dyed. Specifically, the material used by the first buffer 1112 includes but is not limited to sponge, cotton, silk net, synthetic fiber material, foam material, non-woven fabric, etc. The first roller body 1111 has a first cavity, which is configured to store a first pigment, and the first pigment can be released from the first cavity. Specifically, the first roller body 1111 has a plurality of capillaries distributed on its outer peripheral wall, and the capillaries are connected to the first cavity. When the first roller body 1111 rotates, the first pigment can flow out of the first cavity through the capillaries under the action of inertia and be adsorbed on the first buffer 1112. When the first roller body 1111 is stationary, the first pigment cannot flow out of the first cavity through the capillaries, and the first buffer 1112 can also play a role in closing the capillaries.

[0049] Similarly, see Figure 2 and Figure 3 The second dyeing unit 121 includes a second roller 1211 and a second buffer 1212. The second buffer 1212 is sleeved on the second roller 1211. The second buffer 1212 is configured to be able to transmit a second pigment. The second pigment acts on the nylon yarn 20 to make the nylon yarn 20 present a second color. The second roller 1211 is configured to be driven to rotate. The second buffer 1212 is configured to be a flexible material. The second buffer 1212 can reduce the friction between the nylon yarn 20 and the second dyeing unit 121. In addition, after the second buffer 1212 contacts the nylon yarn 20, the flexible second buffer 1212 can wrap the nylon yarn 20, so that the surrounding side of the nylon yarn 20 can be dyed. Specifically, the material used by the second buffer 1212 includes but is not limited to sponge, cotton, silk net, synthetic fiber material, foam material, non-woven fabric, etc. The second roller body 1211 has a second cavity, which is configured to store a second pigment, and the second pigment can be released from the second cavity. Specifically, the second roller body 1211 has a plurality of capillaries distributed on its outer peripheral wall, and the capillaries are connected to the second cavity. When the second roller body 1211 rotates, the second pigment can flow out of the second cavity through the capillaries under the action of inertia and be adsorbed on the second buffer 1212. When the second roller body 1211 is stationary, the second pigment cannot flow out of the second cavity through the capillaries, and the second buffer 1212 can also play a role in sealing the capillaries.

[0050] The second aspect of the utility model also provides a nylon yarn testing device 10, see Figure 1 The nylon yarn testing device 10 comprises a braiding device 200, a machine base 400 and a dyeing component 100 described in any of the above embodiments. The braiding device 200 is configured to sequentially braid each roll of nylon yarn 20 to obtain a test sample, and the dyeing component 100 can mark the sample monomers braided by each roll of nylon yarn 20. The braiding device 200 and the dyeing component 100 are arranged on the machine base 400, and the dyeing component 100 is arranged at any position of the path where the nylon yarn 20 enters the braiding device 200. The dyeing component 100 can dye the part of the nylon yarn 20 before entering the braiding device 200. In one embodiment, the dyeing component 100 can dye at least part of the nylon yarn 20 before each roll of nylon yarn 20 is braided, and the dyed part can distinguish adjacent sample monomers after being braided by the braiding device 200. In another embodiment, after each roll of nylon yarn 20 braids a section of the sample, the dyeing component 100 dyes the pre-woven part of the nylon yarn 20. Therefore, the end of the sample monomer obtained by weaving the dyed nylon yarn 20 part has color, which can distinguish the sample monomer woven by the next roll of nylon yarn 20.

[0051] See also Figure 1 The nylon yarn testing device 10 further includes a conductor assembly 300, which is disposed on the machine base 400. The conductor assembly 300 is configured to guide the nylon yarn 20 to the braiding device 200, and the dyeing assembly 100 is disposed between the conductor assembly 300 and the braiding device 200. The arrangement of the conductor assembly 300 is conducive to reducing the probability of the nylon yarn 20 being knotted after being separated from the yarn coil, so the dyeing assembly 100 is arranged at any position between the conductor assembly 300 and the braiding device 200, which is conducive to improving the dyeing effect of the nylon yarn 20, thereby improving the distinguishing effect between adjacent sample monomers.

[0052] In one embodiment, the first connection part 112 is hinged to the base 400, and the first dyeing part 111 is configured to be able to approach or move away from the nylon yarn 20 with the first connection part 112. When the first dyeing part 111 contacts the nylon yarn 20, the color of the nylon yarn 20 is the first color. The second connection part 122 is hinged to the base 400, and the second dyeing part 121 is configured to be able to approach or move away from the nylon yarn 20 with the second connection part 122. When the second dyeing part 121 contacts the nylon yarn 20, the color of the nylon yarn 20 is the second color. When the first dyeing part 111 and the second dyeing part 121 contact the nylon yarn 20 at the same time, the nylon yarn 20 is a third color. In another embodiment, the first connection part 112 is hinged to the second connection part 122, and the dyeing assembly 100 can be connected to the base 400 by threaded connection, and the first connection part 112 and the second connection part 122 can rotate relative to the base 400 around the rotation axis.

[0053] Specifically, the first dyeing part 110 can be used to mark the first roll of nylon yarn 20, so that the sample monomer woven from the first roll of nylon yarn 20 is at least partially in the first color. The second dyeing part 120 can be used to mark the second roll of nylon yarn 20, so that the sample monomer woven from the second roll of nylon yarn 20 is at least partially in the second color. The first dyeing part 111 and the second dyeing part 121 act on the silk thread of the third roll of nylon yarn 20 at the same time, so that the sample monomer woven from the third roll of nylon yarn 20 is at least partially in the third color. The first color can distinguish the sample monomer woven from the first roll of nylon yarn 20 from the sample monomer woven from the second roll of nylon yarn 20, the second color can distinguish the sample monomer woven from the second roll of nylon yarn 20 from the sample monomer woven from the third roll of nylon yarn 20, and the third color can distinguish the sample monomer woven from the third roll of nylon yarn 20 from the sample monomer woven from the fourth roll of nylon yarn 20. The arrangement of the dyeing component 100 is conducive to reducing the difficulty of distinguishing sample monomers during the nylon yarn 20 coloring test, thereby improving the efficiency of the nylon yarn 20 coloring test.

[0054] In order to improve the coloring detection efficiency of nylon yarn 20, a test sample includes multiple sample monomers (that is, the nylon yarn 20 rolls participating in the coloring detection are greater than four rolls). In one embodiment, the nylon yarn testing device 10 can be provided with multiple dyeing components 100. Each dyeing component 100 can provide three different colors, and each roll of nylon yarn 20 uses one color to distinguish the adjacent sample monomers woven. In another embodiment, the nylon yarn testing device 10 is provided with only one dyeing component 100, the first color is used to distinguish the first roll of nylon yarn 20 from the second roll of nylon yarn 20, the second color is used to distinguish the second roll of nylon yarn 20 from the third roll of nylon yarn 20, the third color is used to distinguish the third roll of nylon yarn 20 from the fourth roll of nylon yarn 20, the first color is used to distinguish the fourth roll of nylon yarn 20 from the fifth roll of nylon yarn 20, the second color is used to distinguish the fifth roll of nylon yarn 20 from the sixth roll of nylon yarn 20, the third color is used to distinguish the sixth roll of nylon yarn 20 from the seventh roll of nylon yarn 20, and so on.

[0055] In one embodiment, the rotation of the first dyeing member 110 and the second dyeing member 120 can be achieved by manually applying a driving force, that is, when the nylon yarn 20 needs to be dyed and marked, the first dyeing member 110 or the second dyeing member 120 is manually rotated or the first dyeing member 110 and the second dyeing member 120 are rotated simultaneously to dye the nylon yarn 20. In another embodiment, the rotation of the first dyeing member 110 and the second dyeing member 120 can also be driven by setting other structures. Specifically, a cylinder can be set to provide a driving force, and the output end of the cylinder is connected to the first connecting part 112. When the nylon yarn 20 needs to be dyed for marking, the output end of the cylinder extends to push the first connecting part 112 to rotate around the rotation axis, so that the first dyeing part 111 acts on the nylon yarn 20. After the dyeing and marking is completed, the output end of the cylinder contracts, thereby driving the first connecting part 112 to rotate around the rotation axis in a direction away from the nylon yarn 20.

[0056] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0057] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0058] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dyeing assembly for a nylon yarn testing device, characterized in that: include: A first dyeing member, comprising a first dyeing portion and a first connecting portion, wherein the first dyeing portion is configured to provide a first color, the first dyeing portion is connected to one end of the first connecting portion, and the first connecting portion is configured to be driven to rotate around a rotation axis; A second dyeing member, comprising a second dyeing portion and a second connecting portion, wherein the second dyeing portion is configured to provide a second color, the second dyeing portion is connected to one end of the second connecting portion, and the second connecting portion is configured to be driven to rotate around the rotation axis; The first connecting part is hinged to the second connecting part, the first dyeing part is configured to be able to rotate around the rotation axis with the first connecting part to approach or move away from the second dyeing part, and the first dyeing part is configured to be able to contact the second dyeing part to provide a third color.

2. The dyeing assembly according to claim 1, characterized in that The first dyeing part includes a first roller body and a first buffer member, wherein the first buffer member is sleeved on the first roller body, and the first buffer member is configured to be able to transmit a first pigment.

3. The dyeing assembly according to claim 2, characterized in that The first roller body has a first cavity, the first cavity is configured to store the first pigment, and the first pigment can generate the first color when released from the first cavity.

4. The dyeing assembly according to claim 1, characterized in that The second dyeing part includes a second roller body and a second buffer member, the second buffer member is sleeved on the second roller body, and the second buffer member is configured to be able to transmit the second pigment.

5. The dyeing assembly according to claim 4, characterized in that The second roller body has a second cavity, the second cavity is configured to store a second pigment, and the second pigment can generate the second color when released from the second cavity.

6. Nylon yarn testing device, characterized in that: include: The dyeing assembly according to any one of claims 1 to 5; a braider configured to braid the nylon yarn; as well as A machine base, wherein the dyeing assembly and the weaving device are arranged on the machine base; The dyeing component is arranged at any position of the path where the nylon yarn enters the braiding device, and the dyeing component is configured to be able to dye the portion of the nylon yarn before it enters the braiding device.

7. The nylon yarn testing device according to claim 6, characterized in that: The nylon yarn testing device further comprises a wire assembly, wherein the wire assembly is arranged on the machine base and configured to guide the nylon yarn to the braiding device, and the dyeing assembly is arranged between the wire assembly and the braiding device.

8. The nylon yarn testing device according to claim 6, characterized in that: The first connecting part is hinged to the machine base, and the first dyeing part is configured to be able to move closer to or farther away from the nylon yarn along with the first connecting part. When the first dyeing part contacts the nylon yarn, the color of the nylon yarn takes on the first color.

9. The nylon yarn testing device according to claim 6, characterized in that: The second connecting portion is hinged to the machine base, and the second dyeing portion is configured to be able to move closer to or farther away from the nylon yarn along with the second connecting portion. When the second dyeing portion contacts the nylon yarn, the color of the nylon yarn takes on the second color.

10. The nylon yarn testing device according to claim 6, characterized in that: The first connecting part is hinged to the machine base, and the first dyeing part is configured to be able to move closer to or farther away from the nylon yarn along with the first connecting part; The second connecting part is hinged to the machine base, and the second dyeing part is configured to be able to move closer to or farther away from the nylon yarn along with the second connecting part; Wherein, when the first dyeing part and the second dyeing part are in contact with the nylon yarn, the nylon yarn takes on the third color.

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