Color-changeable underwear and preparation process thereof

Abstract

The underwear comprises an outer fabric layer, an inner fabric layer and cups, the outer fabric layer is arranged to be a fabric which is formed by weaving first chinlon and first polyester through a weft knitting double-sided machine by taking first spandex as a middle connecting base material and is provided with double-sided pique weaves, and the inner fabric layer is arranged to be a fabric with double-sided pique weaves. The single fiber number of the first chinlon is larger than the single fiber number of the first spandex, the single fiber number of the first spandex is larger than the single fiber number of the first polyester, and the inner fabric layer is arranged to be a fabric which is formed by weaving second chinlon and thermosensitive color-changing fibers through a weft knitting double-faced machine with second spandex as a middle connecting base material and is provided with double-faced pique weave. The number of single fibers of the second chinlon is larger than that of single fibers of the second spandex, and the number of single fibers of the second spandex is larger than that of single fibers of the thermochromic fibers. The fabric has a one-way water guide function, is high in moisture removal speed, has a good anti-fading effect and is better in washing fastness, and the color changing function cannot be reduced or disappeared.

Description

Technical Field

[0001] The invention relates to the technical field of underwear, and more specifically to a color-changeable underwear and a preparation process thereof. Background Art

[0002] Underwear can adjust the distribution of body fat in the chest, shape beautiful curves, and have a significant beneficial effect on body shaping. It can highlight the beauty of women's bodies and is deeply loved by consumers. There are many types of existing underwear, but most of them are monotonous in color and not novel enough. For this reason, some color-changing underwear have begun to appear on the market. The fabrics are made of color-changing silk. However, the existing color-changing underwear has the following shortcomings:

[0003] (1) After a certain number of washings, the color-changing function of underwear will decrease or disappear;

[0004] (2) The fabric of the underwear does not have a one-way water-conducting function, the skin-contacting surface is not very dry, and the moisture discharge rate is slow. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide a color-changing underwear with a unidirectional water-conducting function, a fast moisture-discharging speed, a good anti-fading effect, better washing fastness, and a color-changing function that will not decrease or disappear, and a preparation process thereof.

[0006] To achieve the above-mentioned purpose, a first aspect of the present invention provides a color-changing underwear, comprising an outer fabric layer, an inner fabric layer and a cup, wherein the cup is installed between the outer fabric layer and the inner fabric layer, the outer fabric layer is configured as a fabric with a double-sided pearl structure woven by a first nylon and a first polyester through a weft knitting double-sided machine with a first spandex as an intermediate connecting base material, the number of single fibers of the first nylon is greater than the number of single fibers of the first spandex, and the number of single fibers of the first spandex is greater than the number of single fibers of the first polyester, the inner fabric layer is configured as a fabric with a double-sided pearl structure woven by a second nylon and a thermochromic fiber through a weft knitting double-sided machine with the second spandex as an intermediate connecting base material, the number of single fibers of the second nylon is greater than the number of single fibers of the second spandex, and the number of single fibers of the second spandex is greater than the number of single fibers of the thermochromic fiber, and the cup is configured as loose and porous silicone cotton.

[0007] Preferably, the thermochromic fiber is made of a second polyester and a thermochromic dye through a supercritical carbon dioxide fluid dyeing process.

[0008] Preferably, the thermochromic dye is composed of the following raw materials in parts by mass:

[0009] 20-45 parts of temperature-sensitive color-changing microcapsules; 5-10 parts of cyanuric chloride; 5-10 parts of isopropyl trititanate; 2-8 parts of ammonium persulfate; 2-5 parts of polyether polyol; 10-15 parts of glacial acetic acid; 2-8 parts of disodium hydrogen phosphate; 10-20 parts of color paste; 10-18 parts of silane coupling agent; 1-5 parts of surfactant; 1-5 parts of antioxidant; 1-5 parts of dispersant; 1-8 parts of pH regulator.

[0010] Preferably, the silane coupling agent is vinyltrimethoxysilane or vinyltriethoxysilane.

[0011] Preferably, the surfactant is sodium stearate or sodium lauryl sulfate.

[0012] Preferably, the antioxidant is set to antioxidant 1010 or antioxidant 1076.

[0013] Preferably, the dispersant is polysorbate.

[0014] Preferably, the pH regulator is potassium hydroxide, sodium hydroxide, sodium carbonate or ammonia water.

[0015] A second aspect of the present invention provides a process for preparing color-changing underwear, comprising the following steps:

[0016] (1) preparing an outer fabric layer of underwear: knitting a first nylon and a first polyester into an outer fabric layer having a double-sided pearl texture by a weft knitting double-sided machine with a first spandex as an intermediate connecting base material, wherein the number of single fibers of the first nylon is greater than the number of single fibers of the first spandex, and the number of single fibers of the first spandex is greater than the number of single fibers of the first polyester;

[0017] (2) preparing an inner fabric layer of underwear: knitting a second nylon and a thermochromic fiber by a weft knitting double-sided machine with the second spandex as an intermediate connecting base material into an inner fabric layer having a double-sided pearl texture, wherein the number of single fibers of the second nylon is greater than the number of single fibers of the second spandex, and the number of single fibers of the second spandex is greater than the number of single fibers of the thermochromic fiber;

[0018] (3) The cup is placed between the outer fabric layer of the underwear and the inner fabric layer of the underwear, and the edges of the outer fabric layer of the underwear and the inner fabric layer of the underwear are sewn together, thereby producing the color-changing underwear.

[0019] Preferably, the method for preparing the thermosensitive color-changing fiber comprises the following steps:

[0020] 1) Add cyanuric chloride, isopropyl trititanate, ammonium persulfate, polyether polyol, glacial acetic acid, and disodium hydrogen phosphate to a reactor, turn on the stirrer, stir at a speed of 180-250 r / min, and start heating at a heating rate of 4-8°C / min, raise the temperature to 75-90°C, stir for 15-20 minutes, then add a silane coupling agent, a surfactant, an antioxidant, a dispersant, and a pH regulator to the reactor, stir for 2-3 hours, then add a color paste and a temperature-sensitive color-changing microcapsule, and stir at a constant temperature for 3-4 hours to obtain a thermosensitive color-changing dye;

[0021] 2) placing a thermochromic dye in a dye kettle, and placing a second polyester in a dye kettle, introducing liquid carbon dioxide, adjusting the temperature and pressure in the dye kettle, setting the temperature to 80-100°C, and the pressure to 20-30MPa, so that the liquid carbon dioxide is converted into a supercritical carbon dioxide fluid, and the supercritical carbon dioxide fluid dissolves the thermochromic dye, and then the supercritical carbon dioxide fluid is circulated in the dye kettle and the dye kettle, so that the supercritical carbon dioxide fluid carries the thermochromic dye to diffuse to the fiber surface and inside of the second polyester, and after dyeing is completed, taking out the finished thermochromic fiber.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The outer fabric layer of the present invention is a fabric with a double-sided pearl texture woven by a first nylon and a first polyester through a weft knitting double-sided machine with a first spandex as the intermediate connecting base material. The single fiber number of the first nylon is greater than the single fiber number of the first spandex, and the single fiber number of the first spandex is greater than the single fiber number of the first polyester. The first nylon can be used as a surface layer, and the first polyester can be used as a bottom layer. The larger the single fiber number, the better the water absorption. Therefore, sweat can be unidirectionally conducted from the first polyester, the first spandex, and the first nylon in sequence. Similarly, the inner fabric layer is a fabric made of a second nylon and a thermochromic fiber through a weft knitting double-sided machine with a second spandex as the intermediate connecting base material. The fabric has a double-sided pearl texture woven with an intermediate connecting base material, the number of single fibers of the second nylon is greater than the number of single fibers of the second spandex, the number of single fibers of the second spandex is greater than the number of single fibers of the thermochromic fiber, the number of single fibers of the first spandex is greater than the number of single fibers of the first polyester, the second nylon can be used as the surface layer, the thermochromic fiber can be used as the bottom layer, the water absorption of the second nylon is greater than that of the second spandex and the thermochromic fiber, respectively, sweat can be unidirectionally conducted from the thermochromic fiber, the second spandex, and the second nylon in turn, so that the sweat can diffuse from the inside to the outside, the moisture discharge speed is increased, and the skin-contacting surface (i.e., the thermochromic fiber) is kept dry.

[0024] 2. The thermochromic fiber of the present invention is made of a second polyester and a thermochromic dye through a supercritical carbon dioxide fluid dyeing process, wherein the thermochromic dye is composed of temperature-sensitive color-changing microcapsules, cyanuric chloride, isopropyl trititanate, ammonium persulfate, polyether polyols, glacial acetic acid, disodium hydrogen phosphate, color paste, silane coupling agent, surfactant, antioxidant, dispersant and pH regulator and other raw materials. It has good anti-fading effect and better washing fastness, so that the color-changing function will not decrease or disappear. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the structure of color-changing underwear provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Please refer to Figure 1 An embodiment of the present invention provides a color-changing underwear, including an outer fabric layer 1, an inner fabric layer 2 and a cup 3, wherein the cup 3 is installed between the outer fabric layer 1 and the inner fabric layer 2.

[0029] In this embodiment, the outer fabric layer 1 can be set as a fabric with a double-sided pearl texture woven by a first nylon and a first polyester through a weft knitting double-sided machine with a first spandex as the intermediate connecting base material. The number of single fibers of the first nylon is greater than the number of single fibers of the first spandex, and the number of single fibers of the first spandex is greater than the number of single fibers of the first polyester.

[0030] In this embodiment, the inner fabric layer 2 can be set as a fabric with a double-sided beaded structure woven by the second nylon and the thermochromic fiber through a weft knitting double-sided machine with the second spandex as the intermediate connecting base material. The number of single fibers of the second nylon is greater than the number of single fibers of the second spandex, and the number of single fibers of the second spandex is greater than the number of single fibers of the thermochromic fiber.

[0031] In this embodiment, the cup 3 can be preferably configured as loose and porous (such as loofah-like) silicone cotton. Due to the characteristics of silicone, the silicone cotton can be washed, dried in the sun, not easily deformed, and has the advantages of being breathable, heat-dissipating, anti-aging, moisture-proof, mildew-proof, and anti-mite.

[0032] The preparation process of the color-changing underwear comprises the following steps:

[0033] (1) preparing an outer fabric layer 1 of underwear: knitting a first nylon and a first polyester into an outer fabric layer 1 having a double-sided pique texture by a weft knitting double-sided machine with a first spandex as an intermediate connecting base material;

[0034] (2) preparing the inner fabric layer 2 of the underwear: knitting the second nylon and the thermochromic fiber through a weft knitting double-sided machine with the second spandex as the intermediate connecting base material into the inner fabric layer 2 with a double-sided pique texture;

[0035] (3) The cup 3 is placed between the outer fabric layer 1 and the inner fabric layer 2 of the underwear, and the edges of the outer fabric layer 1 and the inner fabric layer 2 of the underwear are sewn together, thereby obtaining the color-changing underwear.

[0036] In this embodiment, the thermochromic fiber can be made of the second polyester and the thermochromic dye through a supercritical carbon dioxide fluid dyeing process.

[0037] Example 1

[0038] The thermosensitive color-changing dye of this embodiment 1 is composed of the following raw materials in parts by mass:

[0039] 25 parts of temperature-sensitive color-changing microcapsules; 5 parts of cyanuric chloride; 5 parts of isopropyl trititanate; 2 parts of ammonium persulfate; 2 parts of polyether polyol; 10 parts of glacial acetic acid; 2 parts of disodium hydrogen phosphate; 10 parts of color paste; 10 parts of silane coupling agent; 1 part of surfactant; 1 part of antioxidant; 1 part of dispersant; 1 part of pH regulator.

[0040] The silane coupling agent is set to vinyl trimethoxy silane. The surfactant is set to sodium stearate. The antioxidant is set to antioxidant 1010. The dispersant is set to polysorbate. The pH regulator is set to potassium hydroxide.

[0041] The preparation method of the thermosensitive color-changing fiber comprises the following steps:

[0042] 1) Add cyanuric chloride, isopropyl trititanate, ammonium persulfate, polyether polyol, glacial acetic acid, and disodium hydrogen phosphate to a reactor, turn on the stirrer, stir at a speed of 180 r / min, and start heating at a heating rate of 4°C / min to 80°C, stir for 15 minutes, then add a silane coupling agent, a surfactant, an antioxidant, a dispersant, and a pH regulator to the reactor, stir for 2 hours, then add a color paste and a temperature-sensitive color-changing microcapsule, and stir at a constant temperature for 3 hours to obtain a thermosensitive color-changing dye;

[0043] 2) placing a thermochromic dye in a dye kettle, and placing a second polyester in a dye kettle, introducing liquid carbon dioxide, adjusting the temperature and pressure in the dye kettle, setting the temperature to 80°C and the pressure to 20MPa, converting the liquid carbon dioxide into a supercritical carbon dioxide fluid, and dissolving the thermochromic dye in the supercritical carbon dioxide fluid, and then circulating the supercritical carbon dioxide fluid in the dye kettle and the dye kettle, so that the supercritical carbon dioxide fluid carries the thermochromic dye to diffuse to the fiber surface and interior of the second polyester, and after dyeing is completed, taking out the finished thermochromic fiber.

[0044] Example 2

[0045] The thermosensitive color-changing dye of the present embodiment 2 is composed of the following raw materials in parts by mass:

[0046] 30 parts of temperature-sensitive color-changing microcapsules; 6 parts of cyanuric chloride; 8 parts of isopropyl trititanate; 5 parts of ammonium persulfate; 3 parts of polyether polyol; 12 parts of glacial acetic acid; 5 parts of disodium hydrogen phosphate; 15 parts of color paste; 13 parts of silane coupling agent; 3 parts of surfactant; 2 parts of antioxidant; 3 parts of dispersant; 5 parts of pH regulator.

[0047] The silane coupling agent is set to vinyl triethoxysilane. The surfactant is set to sodium dodecyl sulfate. The antioxidant is set to antioxidant 1076. The dispersant is set to polysorbate. The pH regulator is set to sodium hydroxide.

[0048] The preparation method of the thermosensitive color-changing fiber comprises the following steps:

[0049] 1) Add cyanuric chloride, isopropyl trititanate, ammonium persulfate, polyether polyol, glacial acetic acid, and disodium hydrogen phosphate to a reactor, turn on the stirrer, stir at a speed of 200 r / min, and start heating at a heating rate of 6°C / min to 85°C, stir for 18 minutes, then add a silane coupling agent, a surfactant, an antioxidant, a dispersant, and a pH regulator to the reactor, stir for 2.5 hours, then add a color paste and a temperature-sensitive color-changing microcapsule, and stir at a constant temperature for 3.5 hours to obtain a thermosensitive color-changing dye;

[0050] 2) placing a thermochromic dye in a dye kettle, and placing a second polyester in a dye kettle, introducing liquid carbon dioxide, adjusting the temperature and pressure in the dye kettle, setting the temperature to 90°C and the pressure to 25MPa, converting the liquid carbon dioxide into a supercritical carbon dioxide fluid, and dissolving the thermochromic dye in the supercritical carbon dioxide fluid, and then circulating the supercritical carbon dioxide fluid in the dye kettle and the dye kettle, so that the supercritical carbon dioxide fluid carries the thermochromic dye to diffuse to the fiber surface and interior of the second polyester, and after dyeing is completed, taking out the finished thermochromic fiber.

[0051] Example 3

[0052] The thermosensitive color-changing dye of this embodiment 3 is composed of the following raw materials in parts by mass:

[0053] 45 parts of temperature-sensitive color-changing microcapsules; 10 parts of cyanuric chloride; 10 parts of isopropyl trititanate; 8 parts of ammonium persulfate; 5 parts of polyether polyol; 15 parts of glacial acetic acid; 8 parts of disodium hydrogen phosphate; 20 parts of color paste; 18 parts of silane coupling agent; 5 parts of surfactant; 5 parts of antioxidant; 5 parts of dispersant; 8 parts of pH regulator.

[0054] The silane coupling agent is set to vinyl trimethoxy silane. The surfactant is set to sodium dodecyl sulfate. The antioxidant is set to antioxidant 1076. The dispersant is set to polysorbate. The pH regulator is set to ammonia water.

[0055] The preparation method of the thermosensitive color-changing fiber comprises the following steps:

[0056] 1) Add cyanuric chloride, isopropyl trititanate, ammonium persulfate, polyether polyol, glacial acetic acid, and disodium hydrogen phosphate to a reactor, turn on the stirrer, stir at a speed of 250 r / min, and start heating at a heating rate of 8°C / min, raise the temperature to 90°C, stir for 20 minutes, then add a silane coupling agent, a surfactant, an antioxidant, a dispersant, and a pH regulator to the reactor, stir for 3 hours, then add a color paste and a temperature-sensitive color-changing microcapsule, and stir at a constant temperature for 4 hours to obtain a thermosensitive color-changing dye;

[0057] 2) placing a thermochromic dye in a dye kettle, and placing a second polyester in a dye kettle, introducing liquid carbon dioxide, adjusting the temperature and pressure in the dye kettle, setting the temperature to 100°C and the pressure to 30MPa, converting the liquid carbon dioxide into a supercritical carbon dioxide fluid, and dissolving the thermochromic dye in the supercritical carbon dioxide fluid, and then circulating the supercritical carbon dioxide fluid in the dye kettle and the dye kettle, so that the supercritical carbon dioxide fluid carries the thermochromic dye to diffuse to the fiber surface and interior of the second polyester, and after dyeing is completed, taking out the finished thermochromic fiber.

[0058] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A color-changing underwear, comprising an outer fabric layer, an inner fabric layer and a cup, wherein the cup is installed between the outer fabric layer and the inner fabric layer, characterized in that: The outer fabric layer is configured as a fabric with a double-sided pearl structure formed by weaving a first nylon and a first polyester through a weft knitting double-sided machine with the first spandex as the intermediate connecting base material, the number of single fibers of the first nylon is greater than the number of single fibers of the first spandex, and the number of single fibers of the first spandex is greater than the number of single fibers of the first polyester, the inner fabric layer is configured as a fabric with a double-sided pearl structure formed by weaving a second nylon and a thermochromic fiber through a weft knitting double-sided machine with the second spandex as the intermediate connecting base material, the number of single fibers of the second nylon is greater than the number of single fibers of the second spandex, and the number of single fibers of the second spandex is greater than the number of single fibers of the thermochromic fiber, and the cup is configured as loose and porous silicone cotton.

2. The color-changing underwear according to claim 1, characterized in that: The thermochromic fiber is made of a second polyester and a thermochromic dye through a supercritical carbon dioxide fluid dyeing process.

3. The color-changing underwear according to claim 2, characterized in that: The thermochromic dye is composed of the following raw materials in parts by mass: 20-45 parts of temperature-sensitive color-changing microcapsules; 5-10 parts of cyanuric chloride; 5-10 parts of isopropyl trititanate; 2-8 parts of ammonium persulfate; 2-5 parts of polyether polyol; 10-15 parts of glacial acetic acid; 2-8 parts of disodium hydrogen phosphate; 10-20 parts of color paste; 10-18 parts of silane coupling agent; 1-5 parts of surfactant; 1-5 parts of antioxidant; 1-5 parts of dispersant; 1-8 parts of pH regulator.

4. The color-changing underwear according to claim 1, characterized in that: The silane coupling agent is vinyl trimethoxy silane or vinyl triethoxy silane.

5. The color-changing underwear according to claim 1, characterized in that: The surfactant is set to be sodium stearate or sodium lauryl sulfate.

6. The color-changing underwear according to claim 1, characterized in that: The antioxidant is set to be antioxidant 1010 or antioxidant 1076.

7. The color-changing underwear according to claim 1, characterized in that: The dispersant is polysorbate.

8. The color-changing underwear according to claim 1, characterized in that: The pH regulator is set to be potassium hydroxide, sodium hydroxide, sodium carbonate or ammonia water.

9. The process for preparing color-changing underwear according to any one of claims 1 to 8, characterized in that: The following steps are involved: (1) preparing an outer fabric layer of underwear: knitting a first nylon and a first polyester into an outer fabric layer having a double-sided pearl texture by a weft knitting double-sided machine with a first spandex as an intermediate connecting base material, wherein the number of single fibers of the first nylon is greater than the number of single fibers of the first spandex, and the number of single fibers of the first spandex is greater than the number of single fibers of the first polyester; (2) preparing an inner fabric layer of underwear: knitting a second nylon and a thermochromic fiber by a weft knitting double-sided machine with the second spandex as an intermediate connecting base material into an inner fabric layer having a double-sided pearl texture, wherein the number of single fibers of the second nylon is greater than the number of single fibers of the second spandex, and the number of single fibers of the second spandex is greater than the number of single fibers of the thermochromic fiber; (3) The cup is placed between the outer fabric layer of the underwear and the inner fabric layer of the underwear, and the edges of the outer fabric layer of the underwear and the inner fabric layer of the underwear are sewn together, thereby producing the color-changing underwear.

10. The process for preparing color-changing underwear according to claim 9, characterized in that: The preparation method of the thermosensitive color-changing fiber comprises the following steps: 1) Add cyanuric chloride, isopropyl trititanate, ammonium persulfate, polyether polyol, glacial acetic acid, and disodium hydrogen phosphate to a reactor, turn on the stirrer, stir at a speed of 180-250 r / min, and start heating at a heating rate of 4-8°C / min, raise the temperature to 75-90°C, stir for 15-20 minutes, then add a silane coupling agent, a surfactant, an antioxidant, a dispersant, and a pH regulator to the reactor, stir for 2-3 hours, then add a color paste and a temperature-sensitive color-changing microcapsule, and stir at a constant temperature for 3-4 hours to obtain a thermosensitive color-changing dye; 2) placing a thermochromic dye in a dye kettle, and placing a second polyester in a dye kettle, introducing liquid carbon dioxide, adjusting the temperature and pressure in the dye kettle, setting the temperature to 80-100°C, and the pressure to 20-30MPa, so that the liquid carbon dioxide is converted into a supercritical carbon dioxide fluid, and the supercritical carbon dioxide fluid dissolves the thermochromic dye, and then the supercritical carbon dioxide fluid is circulated in the dye kettle and the dye kettle, so that the supercritical carbon dioxide fluid carries the thermochromic dye to diffuse to the fiber surface and inside of the second polyester, and after dyeing is completed, taking out the finished thermochromic fiber.

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