A double-color microfiber suede fabric and a production process thereof

Abstract

The application provides a production process of a double-color microfiber suede fabric, specifically, fabric gray cloth treated by a pretreatment process is immersed in polyurethane slurry containing pigments, then the gray cloth after the immersion treatment is treated by a fiber opening process and a raising process, and then treated by a dyeing process, and finally treated by a setting process to obtain the double-color microfiber suede fabric; wherein the color of the pigments in the polyurethane slurry is different from the color of the dyes used in the dyeing process. The application also provides a double-color microfiber suede fabric, which has a bottom color and a surface color, and the color of the bottom color is different from the color of the surface color.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of microfiber suede fabric, and particularly relates to a two-color microfiber suede fabric and a production process thereof. BACKGROUND

[0002] Nowadays, the requirements for automobile interior decoration are higher and higher, and not only single-color ordinary fabric is needed, but also two-color microfiber suede fabric is needed to give people a magnificent and high-end luxurious feeling. At present, to realize the two-color effect on the fabric, the most commonly used methods are: ① using modified polyester fabric to simultaneously dye by cationic dyes and disperse dyes to obtain a two-color effect, but the flash part of the obtained two-color fabric is not very obvious, so this method is only suitable for ordinary polyester, and is not suitable for microfiber suede fabric; ② realizing by the method of inkjet printing, but the inkjet printing speed is slow and the efficiency is extremely low, in addition, if the microfiber suede fabric is used for inkjet printing, since the suede fabric has fluff, the flash part is easy to seep out of the edge during inkjet printing, resulting in unclear two-color. SUMMARY

[0003] To solve the above technical problems, the purpose of the present application is to provide a two-color microfiber suede fabric and a production process thereof; the production process can obtain a microfiber suede fabric with clear and pure two-color effect, improves the grade and quality of the microfiber suede fabric, and greatly improves the production efficiency compared with the traditional process.

[0004] To achieve the above technical purposes and effects, the present application realizes the following technical solutions:

[0005] The present application provides a production process of a two-color microfiber suede fabric, specifically: dipping a fabric gray cloth treated by a pretreatment process into polyurethane slurry containing pigments, then treating the dipped gray cloth by a fiber opening process and a raising process, and then treating the gray cloth by a dyeing process, and finally treating the gray cloth by a setting process to obtain a two-color microfiber suede fabric; wherein the color of the pigments in the polyurethane slurry is different from the color of the dyes used in the dyeing process.

[0006] Further, the fabric gray cloth is woven by island-in-sea silk in a warp-weft interlacing manner.

[0007] Further, the pretreatment process includes a high-temperature preshrinking process and a pre-setting process.

[0008] Further, the high-temperature preshrinking process is performed by increasing the temperature to 130℃ at a temperature increasing rate of 1℃ / min, keeping the temperature for 30 minutes, then decreasing the temperature to 40℃ at a temperature decreasing rate of 1℃ / min, and washing with water.

[0009] Further, the process condition of the predetermination process is: temperature 190 DEG C, vehicle speed 30 m / min.

[0010] Further, the process condition of the predetermination process is: temperature 190 DEG C, vehicle speed 30 m / min.

[0011] Further, the process condition of the predetermination process is: temperature 190 DEG C, vehicle speed 30 m / min.

[0012] Further, the process condition of the predetermination process is: temperature 190 DEG C, vehicle speed 30 m / min.

[0013] Further, the process condition of the predetermination process is: temperature 190 DEG C, vehicle speed 30 m / min.

[0014] Another aspect of the present application provides a double-color microfiber suede fabric, which is prepared by the production process described above, and has a bottom color and a surface color, wherein the color of the bottom color is different from the color of the surface color.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] The fabric is first immersed in a polyurethane slurry containing pigments to form a polyurethane immersion fabric with a bottom color, and then subjected to a fiber opening treatment, so that the yarns of the fabric become fluffy, and then subjected to a raising treatment, so that the white part not colored by the pigments is exposed, and then subjected to a dyeing treatment, so that the white part is dyed by the dye in the dyeing process to form a surface color, thereby obtaining a double-color microfiber suede fabric with a bottom color and a surface color.

[0017] The production process can obtain a microfiber suede fabric with clear and pure double-color effect, improve the grade and quality of the microfiber suede fabric, and greatly improve the production efficiency compared with the traditional process.

[0018] The microfiber suede fabric of the present application not only has the advantages of rich and delicate surface fluff and soft and compact hand feeling, but also has a unique double-color effect, which meets the high-quality requirements of users for suede fabric. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a partial view of the double-color microfiber suede fabric of the present application. DETAILED DESCRIPTION

[0020] The technical solutions in the present application will be clearly and completely described below in combination with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of the present application.

[0021] The present application provides a production process of a two-color microfiber suede fabric. The process comprises the following steps: immersing a fabric base treated by a pretreatment process in polyurethane slurry containing pigments, then treating the immersed base by a fiber opening process and a raising process, and then treating the base by a dyeing process, and finally treating the base by a setting process to obtain the two-color microfiber suede fabric. The color of the pigments in the polyurethane slurry is different from the color of the dyes used in the dyeing process.

[0022] In the production process, the fabric base is woven by island silk in a warp-weft interlacing manner.

[0023] The pretreatment process includes a high-temperature preshrinking process and a pre-setting process. The high-temperature preshrinking process is performed by heating at a rate of 1℃ / min to 130℃, holding for 30 minutes, then cooling at a rate of 1℃ / min to 40℃, and washing with water. The pre-setting process is performed at a temperature of 190℃ and a speed of 30 m / min.

[0024] The fiber opening process is performed at a temperature of 90℃ for 30 minutes, and the concentration of the caustic soda is 10 g / L.

[0025] The dyeing process is performed by heating at a rate of 1.5℃ / min to 130℃, holding for 30 minutes, and then cooling at a rate of 1.5℃ / min to 40℃.

[0026] After the dyeing process, a reduction cleaning process and a washing process are sequentially performed. The reduction cleaning process is performed by heating at a rate of 0.5-2℃ / min to 70-90℃ for 10-30 minutes, and then draining the liquid. The reduction cleaning solution used in the reduction cleaning process is an aqueous solution containing 0.5-1.5 g / L caustic soda and 2-4 g / L sodium dithionite.

[0027] The setting process is performed at a temperature of 190℃ and a speed of 30 m / min.

[0028] The two-color microfiber suede fabric produced by the above production process has a bottom color and a surface color, and the color of the bottom color is different from the color of the surface color.

[0029] The principle of the production process to produce the double color effect is that the base cloth is immersed with the polyurethane slurry containing pigments, so the base cloth surface already has a certain color (the base color); the dyeing agent is configured according to the required double color effect; the base cloth immersed with the polyurethane slurry is subjected to dyeing treatment; in the dyeing process, the dye is up-dyed on the yarn, and the polyurethane part is only stained; after the dyeing is completed, the color stained on the polyurethane is washed away through the reduction cleaning process and the washing process, the surface color is obtained, and thus the double color effect of the base color and the surface color is obtained.

[0030] Embodiment

[0031] (1) High temperature pre-shrinking:

[0032] The base cloth of the embodiment is woven in the island-in-sea silk warp and weft interlacing manner; since the width of the woven base cloth is wide, pre-shrinking is required; the pre-shrinking process is carried out in the dye vat; since the island-in-sea silk yarn is thin, it is prone to shrink too fast when encountering high temperature, so the heating and cooling speed of the pre-shrinking process must be slow. The process of the high temperature pre-shrinking process of the embodiment is to heat to 130℃ at a heating speed of 1℃ / min, keep the temperature for 30 minutes, then cool to 40℃ at a cooling speed of 1℃ / min, and wash with water.

[0033] (2) Pre-setting:

[0034] The process condition of the pre-setting process is that the temperature is 190℃ and the speed is 30m / min. The purpose of the pre-setting is to make the cloth surface flat and stiff, which is convenient for the subsequent immersion treatment.

[0035] (3) Immersion of the polyurethane slurry containing pigments:

[0036] The polyurethane slurry of the embodiment contains main materials: 50kg of polycarbon resin MJ01, 50kg of polycarbon resin MJ02, and 200kg of DMF; in addition, 0.5% of coagulant, 0.1% of yellow pigment, 0.1% of red pigment, 0.3% of blue pigment, and 1.5% of black pigment are added to the polyurethane slurry with respect to the mass of the main materials; after the base cloth is immersed with the polyurethane slurry, it is coagulated in a water tank and then dried. The woven base cloth is white, and after being immersed with the polyurethane slurry, the base cloth becomes black; but since the immersion temperature is room temperature, the black pigment only enters the intersection of the warp and weft directions; since the density of the base cloth is large and there is no fiber opening, the entire cloth surface of the base cloth appears black.

[0037] (4) Fiber opening process:

[0038] The process condition of the fiber opening process is that the temperature is 90℃, the time is 30min, and the concentration of the caustic soda is 10g / L; the fiber opening rate reaches 25%; after the fiber opening treatment, the yarn is very fluffy, which is convenient for the subsequent napping.

[0039] (5) Napping process:

[0040] After the opening, the island silk is opened, the cloth surface becomes very fluffy, and the pulling is easier to carry out. According to the user's requirement for style, the pulling parameters are adjusted to pull out different style of wool feeling cloth surface; after pulling, it is found that there are white silk leakage, the reason is that the black pigment only enters the intersection of warp and weft during immersion, and the other places are white, after opening and pulling, the white leakage place is exposed, which lays the foundation for dyeing.

[0041] (6) Dyeing:

[0042] The dyeing process uses a high-temperature and high-pressure overflow dyeing machine; the dyeing agent of the dyeing process of the embodiment uses a blue dye formula, specifically: disperse yellow 0.1 owf%, disperse red 0.1 owf%, disperse blue 1.0 owf%, dispersing agent 1 g / L, acetic acid 0.5 g / L; the dyeing process conditions are: the temperature is raised to 130℃ at a temperature rising rate of 1.5℃ / min, and kept for 30 minutes, and then the temperature is lowered to 40℃ at a temperature lowering rate of 1.5℃ / min. Then the reduction cleaning process treatment and washing treatment are carried out in turn; the process of the reduction cleaning process treatment is: the temperature is raised to 85℃ at a temperature rising rate of 1.5℃ / min for 20 minutes, and the residual liquid is discharged; the reduction cleaning solution used in the reduction cleaning process is an aqueous solution containing 1 g / L caustic soda and 2.5 g / L sodium dithionite.

[0043] After dyeing, the place where the white silk leaks after pulling is dyed blue, and the black at the intersection of the warp and weft remains, thus producing a blue and black effect, that is, the background color appears black, and the surface color is blue, that is, a blue and black double-color effect is produced, as shown in Figure 1 .

[0044] According to the above process, different double-color effects can also be obtained by configuring different dyeing agents, that is, black as the background, red, green, yellow, etc. can be dyed to produce various color and black; if the pigment is other color during immersion, another color can be dyed during dyeing, thus producing various double-color effects.

[0045] (7) Setting:

[0046] The process conditions of the setting process are: temperature 190℃, speed 30m / min.

[0047] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, any modification or equivalent transformation made by using the content of the present application specification, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A process for producing a bicolor microfiber suede fabric, characterized by, The fabric base fabric treated by the pretreatment process is immersed in the polyurethane slurry containing pigments, and then the immersed base fabric is treated by the fiber opening process and the pulling process, and then is treated by the dyeing process; in the dyeing process, the dye is used to dye the yarn, and the polyurethane is only colored; after the dyeing process, the color on the polyurethane is washed away by the reduction cleaning process and the washing process, and the surface color is obtained; finally, the double-color microfiber suede fabric is obtained by the setting process; wherein the color of the pigments in the polyurethane slurry is different from the color of the dye used in the dyeing process. The pretreatment process includes a high-temperature preshrinking process and a pre-setting process; the process of the high-temperature preshrinking process is as follows: the temperature is raised to 130℃ at a rate of 1℃ / min, and then the temperature is kept for 30 minutes; then the temperature is lowered to 40℃ at a rate of 1℃ / min, and then the water washing is performed; the process conditions of the pre-setting process are as follows: the temperature is 190℃, and the speed is 30m / min.

2. The production process of a double-color microfiber suede fabric according to claim 1, characterized in that, The fabric base fabric is woven by the island silk warp and weft interlacing method.

3. The production process of a double-color microfiber suede fabric according to claim 1, characterized in that, The process conditions of the fiber opening process are as follows: the temperature is 90℃, the time is 30min, and the concentration of the caustic soda is 10g / l.

4. The production process of a double-color microfiber suede fabric according to claim 1, characterized in that, The process of the dyeing process is as follows: the temperature is raised to 130℃ at a rate of 1.5℃ / min, and then the temperature is kept for 30 minutes; then the temperature is lowered to 40℃ at a rate of 1.5℃ / min.

5. The production process of a double-color microfiber suede fabric according to claim 1 or 4, characterized in that, The process of the reduction cleaning process is as follows: the temperature is raised to 70-90℃ at a rate of 0.5-2℃ / min, and then the temperature is kept for 10-30 minutes; then the residual liquid is discharged; the reduction cleaning liquid used in the reduction cleaning process is the aqueous solution of caustic soda and sodium dithionite.

6. The production process of a double-color microfiber suede fabric according to claim 1, characterized in that, The process conditions of the setting process are as follows: the temperature is 190℃, and the speed is 30m / min.

7. A two-tone microfiber suede fabric, characterized by, The double-color microfiber suede fabric is obtained by the production process of any one of claims 1-6, and has a bottom color and a surface color, wherein the color of the bottom color is different from the color of the surface color.

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