Cellulose flower ash cloth and preparation method thereof

Abstract

The invention relates to the technical field of textile dyeing, and discloses cellulose flower ash cloth and a preparation method thereof. The method comprises the following steps: (1) blending cellulose loose fibers and raw cotton loose fibers into yarns, and spinning to obtain cloth; (2) atomizing the cloth by adopting an alkali-containing reactive dye liquor; (3) rolling the atomized cloth into a cloth roll, and wrapping the outermost layer with an airtight film for color fixation; and (4) carrying out water washing and boiling-off treatment on the cloth subjected to color fixation, and then drying. The cellulose flower grey fabric prepared by adopting the method has a good flower grey effect, meanwhile, the production period can be greatly shortened, the technological process is short, and the water consumption and the energy consumption are low.

Description

Technical Field

[0001] The invention relates to the technical field of textile dyeing, and in particular to a cellulose gray cloth and a preparation method thereof. Background Art

[0002] Due to its unique color and texture, gray-and-gray fabrics are often used in casual wear, fashionable outerwear, home furnishings, and other fields. It generally refers to the creation of irregular blocks of color, spots, or textures on the fabric, imitating the effects of stone grinding, wear, or weathering in nature, giving the fabric a rustic, natural aesthetic.

[0003] There are many production processes for gray-patterned fabrics. For example, pure cotton gray-patterned fabrics are primarily made by scouring and bleaching cotton bulk fibers before dyeing. The yarn is then blended with natural or other colored cotton bulk fibers and woven into fabric, creating the gray-patterned effect. Other methods involve blending different bulk fibers, such as cotton bulk fibers with polyester staple fibers, and then dyeing them. Because polyester is dyed with disperse dyes and cotton with reactive dyes, the two fibers have different colors, resulting in a gray-patterned fabric. Other methods involve combining two different colored yarns into a single strand and weaving it into a similarly gray-patterned fabric.

[0004] The production process for pure cotton gray fabric begins with dyeing the loose fibers, spinning them into yarn, and finally weaving them into fabric. Each process involves losses, from the colored loose fibers to the finished colored gray fabric. This results in high production costs and a long production cycle. However, dyeing the colored gray fabric after weaving offers an environmentally friendly and cost-effective production process. Summary of the Invention

[0005] The purpose of the present invention is to overcome the problems of long production cycle, water consumption and energy consumption of cellulose ash cloth in the prior art, and to provide a preparation method of cellulose ash cloth. The preparation method of cellulose ash cloth can greatly shorten the production cycle, and at the same time, the process flow is short and water and energy consumption are low.

[0006] In order to achieve the above object, the present invention provides a method for preparing cellulose ash cloth, which comprises the following steps:

[0007] (1) blending cellulose bulk fibers and raw cotton bulk fibers into yarn, and weaving the yarn to obtain fabric;

[0008] (2) atomizing the fabric using an alkali-containing reactive dye solution;

[0009] (3) rolling the atomized fabric into a roll and wrapping the outermost layer with an airtight film for color fixation;

[0010] (4) The dye-fixed fabric is washed and scour, and then dried.

[0011] Preferably, in step (1), the total weight of the cellulose bulk fibers and the raw cotton bulk fibers is 100%, wherein the content of the cellulose bulk fibers is 10-90 wt%.

[0012] Preferably, in step (1), the cellulose bulk fibers are selected from one or more of cotton bulk fibers, ramie bulk fibers and viscose bulk fibers.

[0013] Preferably, in step (2), the concentration of the alkali in the alkali-containing reactive dye solution is 0.1-20 g / L.

[0014] Preferably, in step (2), the alkali in the reactive dye liquor containing alkali is a substitute alkali.

[0015] Preferably, in step (2), the concentration of the reactive dye in the alkali-containing reactive dye solution is 0.5-8 g / L.

[0016] Preferably, in step (2), the reactive dye is selected from one or more of reactive red 195 dye, reactive blue 194 dye and reactive yellow 194 dye.

[0017] Preferably, in step (2), the liquid carrying rate of the atomized fabric is 30-70%.

[0018] Preferably, in step (3), the color fixing conditions include: temperature of 30-60° C. and time of 30-240 min.

[0019] A second aspect of the present invention provides a cellulose ash cloth prepared by the above method.

[0020] The cellulose gray fabric is prepared by the method of the present invention, and the fabric is dyed by atomization, so that the fabric can produce a good gray effect and can also greatly reduce water consumption. At the same time, the method of the present invention is used to dye the fabric, which can greatly shorten the production processing cycle. The fabric can be prepared in advance, and the subsequent production process only needs to dye the fabric according to the color requirements, thereby avoiding the problem of the traditional production process that the fabric color needs to be determined and then the yarn is dyed according to the color and the subsequent weaving production cycle is long, which can greatly improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a rendering of the pure cotton red patterned gray fabric prepared in Example 1 of the present invention;

[0022] Figure 2 This is a rendering of the pure cotton blue gray fabric prepared in Example 2 of the present invention;

[0023] Figure 3This is a rendering of the yellow and gray pure cotton fabric prepared in Example 3 of the present invention. DETAILED DESCRIPTION

[0024] The following is a detailed description of the specific embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0025] The endpoints of the ranges and any values disclosed herein are not limited to the precise ranges or values, and these ranges or values should be understood to include values close to these ranges or values. For numerical ranges, the endpoints of each range, the endpoints of each range and individual point values, and the individual point values can be combined with each other to obtain one or more new numerical ranges, which should be considered to be specifically disclosed herein.

[0026] In one aspect, the present invention provides a method for preparing cellulose ash cloth, the method comprising the following steps:

[0027] (1) blending cellulose bulk fibers and raw cotton bulk fibers into yarn, and weaving the yarn to obtain fabric;

[0028] (2) atomizing the fabric using an alkali-containing reactive dye solution;

[0029] (3) rolling the atomized fabric into a roll and wrapping the outermost layer with an airtight film for color fixation;

[0030] (4) The dye-fixed fabric is washed and scour, and then dried.

[0031] In the present invention, the "cellulose bulk fibers" refer to "cellulose bulk fibers that have been scoured and bleached."

[0032] In the method of the present invention, cellulose bulk fibers and raw cotton bulk fibers are blended into yarns, and after weaving, cloth is obtained. Since the raw cotton bulk fibers contain wax and oil on their surfaces, they have hydrophobic properties and are not easily soaked and dyed. Subsequently, when the cloth is atomized with an alkali-containing reactive dye solution, the portion of the cloth woven with the raw cotton bulk fibers is not easily dyed and only has a small amount of floating color attached, while only the portion woven with the cellulose bulk fibers is dyed. Subsequently, the cloth is wrapped with a film for insulation. Under the action of the alkali, the reactive dye reacts with the cellulose bulk fibers to complete the color fixation of the dye. The floating color and chemical substances on the cloth are then removed by washing. Subsequently, the wax and oil on the raw cotton bulk fibers are removed by scouring. After drying, a cellulose cloth with a gray effect is obtained.

[0033] In a preferred embodiment, depending on the desired gray effect of the fabric, in step (1), the total weight of the cellulose bulk fibers and the raw cotton bulk fibers is 100%, wherein the content of the cellulose bulk fibers is 10-90 wt%. Based on this, the gray effect of the fabric can be adjusted by adjusting the content of the cellulose bulk fibers; preferably, the content of the cellulose bulk fibers is 20-80 wt%; specifically, the content of the cellulose bulk fibers can be 20 wt%, 30 wt%, 40 wt%, 50 wt%, 60 wt%, 70 wt% or 80 wt%.

[0034] In a preferred embodiment, in order to further improve the gray effect of the gray cellulose cloth, in step (1), the cellulose bulk fibers are selected from one or more of cotton bulk fibers, ramie bulk fibers and viscose bulk fibers; preferably cotton bulk fibers.

[0035] In a preferred embodiment, in order to improve the dyeing effect and utilization rate of the reactive dye, in step (2), the concentration of the alkali in the reactive dye solution containing alkali is 0.1-20 g / L.

[0036] In the present invention, there is no special requirement for the base, and any base commonly used in the art can be used; for example, the base can be one or more of sodium hydroxide, potassium hydroxide and an alternative base; preferably an alternative base.

[0037] In the method of the present invention, the concentration of the reactive dye in the alkali-containing reactive dye solution is regulated according to the depth of dyeing of the fabric; in a preferred embodiment, in step (2), the concentration of the reactive dye in the alkali-containing reactive dye solution is 0.5-8 g / L.

[0038] In a preferred embodiment, in step (2), the reactive dye is selected from one or more of reactive red 195 dye, reactive blue 194 dye and reactive yellow 194 dye.

[0039] In the method of the present invention, the atomization is performed at room temperature (10-30° C.).

[0040] In a preferred embodiment, in order to make the ash cellulose cloth have a better ash effect, in step (2), the liquid carrying rate of the fabric after atomization is 30-70%; specifically, the liquid carrying rate of the fabric after atomization can be 30%, 40%, 50%, 60% or 70%.

[0041] In a preferred embodiment, in order to improve the color fixing effect, in step (3), the color fixing conditions include: temperature of 30-60° C. and time of 30-240 min.

[0042] In a preferred embodiment, in order to improve the levelness of dyeing, the fixing process further includes rotating the cloth roll; preferably, the cloth roll rotates at a speed of 3-4 rpm.

[0043] A second aspect of the present invention provides a cellulose ash cloth prepared by the above method.

[0044] The cellulose ash cloth prepared by the method has good ash effect.

[0045] The following examples further illustrate the cellulose ash fabric and its preparation method of the present invention. The examples are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operating processes, but the scope of protection of the present invention is not limited to the following examples.

[0046] The experimental methods in the following examples, unless otherwise specified, are all conventional methods in the art. The experimental materials used in the following examples, unless otherwise specified, are all commercially available.

[0047] Example 1

[0048] (1) blending cotton bulk fibers and raw cotton bulk fibers (the total weight of the cotton bulk fibers and the raw cotton bulk fibers is 100%, and the content of the cotton bulk fibers is 80 wt%) into yarns of 60 Nes, and weaving the blended yarns to obtain fabric;

[0049] (2) Atomizing the fabric with a dye solution of Reactive Red 195 containing an AlO 500 alkali substitute at a temperature of 20°C, so that the dyeing rate of the fabric is 50%, wherein the concentration of the AlO 500 alkali substitute is 0.7 g / L and the concentration of the Reactive Red 195 dye is 1.5 g / L;

[0050] (3) The atomized fabric is rolled into a roll, and the outermost layer is wrapped with an airtight film and rotated at 60°C at a speed of 3 rpm for 60 minutes for color fixation;

[0051] (4) The dye-fixed fabric is washed and scour, and then dried at 85°C.

[0052] Example 2

[0053] (1) blending cotton bulk fibers and raw cotton bulk fibers (the total weight of the cotton bulk fibers and the raw cotton bulk fibers is 100%, and the content of the cotton bulk fibers is 80 wt%) into yarns of 60 Nes, and weaving the blended yarns to obtain fabric;

[0054] (2) Atomizing the fabric with a dye solution of reactive blue 194 containing an alkali substitute of AlO 500 at a temperature of 20°C, such that the dyeing rate of the fabric is 45%, wherein the concentration of the alkali substitute of AlO 500 is 0.7 g / L and the concentration of the reactive blue 194 is 1.5 g / L;

[0055] (3) The atomized fabric is rolled into a roll, and the outermost layer is wrapped with an airtight film and rotated at 4 rpm at a temperature of 60°C for 60 minutes to fix the color;

[0056] (4) The dye-fixed fabric is washed and scour, and then dried at 85°C.

[0057] Example 3

[0058] (1) blending cotton bulk fibers and raw cotton bulk fibers (the total weight of the cotton bulk fibers and the raw cotton bulk fibers is 100%, and the content of the cotton bulk fibers is 80 wt%) into yarns of 60 Nes, and weaving the blended yarns to obtain fabric;

[0059] (2) Atomizing the fabric with a dye solution of Reactive Yellow 194 containing an alkali substitute of AlO 500 at a temperature of 20°C, such that the dyeing rate of the fabric is 60%, wherein the concentration of the alkali substitute of AlO 500 is 0.7 g / L and the concentration of the Reactive Yellow 194 is 1.5 g / L;

[0060] (3) The atomized fabric is rolled into a roll, and the outermost layer is wrapped with an airtight film and rotated at 4 rpm at a temperature of 60°C for 60 minutes to fix the color;

[0061] (4) The dye-fixed fabric is washed and scour, and then dried at 85°C.

[0062] Example 4

[0063] (1) blending ramie bulk fibers and raw cotton bulk fibers (the total weight of the ramie bulk fibers and the raw cotton bulk fibers is 100%, and the content of the cotton bulk fibers is 80 wt%) into yarns of 60 Ne, and weaving the blended yarns to obtain fabrics;

[0064] (2) Atomizing the fabric with a dye solution of Reactive Red 195 containing an AlO 500 alkali substitute at a temperature of 20°C, such that the dyeing rate of the fabric is 50%, wherein the concentration of the AlO 500 alkali substitute is 0.1 g / L and the concentration of the Reactive Red 195 dye is 1.5 g / L;

[0065] (3) The atomized fabric is rolled into a roll, and the outermost layer is wrapped with an airtight film and rotated at 60°C at a speed of 3 rpm for 60 minutes for color fixation;

[0066] (4) The dye-fixed fabric is washed and scour, and then dried at 85°C.

[0067] Example 5

[0068] (1) blending cotton bulk fibers and raw cotton bulk fibers (the total weight of the cotton bulk fibers and the raw cotton bulk fibers is 100%, and the content of the cotton bulk fibers is 80 wt%) into yarns of 60 Nes, and weaving the blended yarns to obtain fabric;

[0069] (2) Atomizing the fabric with a dye solution containing sodium hydroxide and reactive red 195 at a temperature of 20° C. to obtain a dye solution with a liquid content of 50%, wherein the concentration of the sodium hydroxide is 0.7 g / L and the concentration of the reactive red 195 is 1.5 g / L;

[0070] (3) The atomized fabric is rolled into a roll, and the outermost layer is wrapped with an airtight film and rotated at 4 rpm at a temperature of 60°C for 60 minutes to fix the color;

[0071] (4) The dye-fixed fabric is washed and scour, and then dried at 85°C.

[0072] Comparative Example 1

[0073] (1) blending cotton bulk fibers and raw cotton bulk fibers (the total weight of the cotton bulk fibers and the raw cotton bulk fibers is 100%, and the content of the cotton bulk fibers is 80 wt%) into yarns of 60 Nes, and weaving the blended yarns to obtain fabric;

[0074] (2) dyeing the fabric with a reactive red 195 dye solution containing an AIO500 alkali substitute for 60 minutes at a temperature of 20° C., wherein the concentration of the AIO500 alkali substitute is 0.7 g / L and the concentration of the reactive red 195 dye is 1.5 g / L;

[0075] (3) Take out the fabric and roll it into a roll. Wrap it with an airtight film on the outermost layer and rotate it at 60°C at a speed of 3 rpm for 60 minutes to fix the color.

[0076] (4) The dye-fixed fabric is washed and scour, and then dried at 85°C.

[0077] Comparative Example 2

[0078] (1) blending cotton bulk fibers and raw cotton bulk fibers (the total weight of the cotton bulk fibers and the raw cotton bulk fibers is 100%, and the content of the cotton bulk fibers is 80 wt%) into yarns of 60 Nes, and weaving the blended yarns to obtain fabric;

[0079] (2) Atomizing the fabric with a dye solution of Reactive Red 195 containing an AlO 500 alkali substitute at a temperature of 20°C, such that the dyeing rate of the fabric is 50%, wherein the concentration of the AlO 500 alkali substitute is 0.1 g / L and the concentration of the Reactive Red 195 dye is 1.5 g / L;

[0080] (3) The atomized fabric was rolled into a roll and fixed at 60°C at a speed of 3 rpm for 60 min;

[0081] (4) The dye-fixed fabric is washed and scour, and then dried at 85°C.

[0082] Test Case

[0083] The fabrics finally prepared in the examples and comparative examples are compared, wherein the effect diagrams of examples 1-3 are as follows: Figure 1-3 shown; among them, Figure 1 This is a rendering of the pure cotton red patterned gray fabric prepared in Example 1 of the present invention; Figure 2 This is a rendering of the pure cotton blue gray fabric prepared in Example 2 of the present invention; Figure 3 This is a rendering of the yellow and gray pure cotton fabric prepared in Example 3 of the present invention.

[0084] Depend on Figure 1-3 It can be seen that the method of the present invention can be used to dye the fabric woven from the yarn blended with cotton bulk fiber and raw cotton bulk fiber with reactive dyes to obtain a good gray effect with different colors.

[0085] By comparing Example 1 and Example 4, it was found that: under the condition of the same dye, the dyeing effect of the method of the present invention on the fabric woven from the yarn blended with ramie bulk fiber and raw cotton bulk fiber was slightly worse;

[0086] By comparing Example 1 and Example 5, it is found that: under the condition of the same dye and fabric, the dyeing effect of using the substitute alkali is better than that of sodium hydroxide;

[0087] By comparing Example 1 with Comparative Example 1, it is found that the method of the present invention is suitable for dyeing by atomization. If the traditional dye bath method is used for dyeing, the entire fabric will be dyed and the gray effect cannot be obtained.

[0088] By comparing Example 1 and Comparative Example 2, it is found that: in the case of the same dye and cloth, if the cloth is not wrapped with an airtight film for color fixation, the cloth will be dyed unevenly and the color will be light.

[0089] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, various simple variations of the technical solution of the present invention may be made, including combining the various technical features in any other appropriate manner. These simple variations and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A method for preparing cellulose ash cloth, characterized in that: The method comprises the following steps: (1) blending cellulose bulk fibers and raw cotton bulk fibers into yarn, and weaving the yarn to obtain fabric; (2) atomizing the fabric using an alkali-containing reactive dye solution; (3) rolling the atomized fabric into a roll and wrapping the outermost layer with an airtight film for color fixation; (4) The dye-fixed fabric is washed and scour, and then dried.

2. The preparation method according to claim 1, characterized in that In step (1), the total weight of the cellulose bulk fibers and the raw cotton bulk fibers is 100%, wherein the content of the cellulose bulk fibers is 10-90 wt%.

3. The preparation method according to claim 1 or 2, characterized in that In step (1), the cellulose bulk fibers are selected from one or more of cotton bulk fibers, ramie bulk fibers and viscose bulk fibers.

4. The preparation method according to claim 3, characterized in that In step (2), the concentration of the alkali in the reactive dye solution containing alkali is 0.1-20 g / L.

5. The preparation method according to claim 1 or 4, characterized in that In step (2), in the alkali-containing reactive dye solution, the alkali is a substitute alkali.

6. The preparation method according to claim 5, characterized in that In step (2), the concentration of the reactive dye in the alkali-containing reactive dye solution is 0.5-8 g / L.

7. The preparation method according to claim 1 or 6, characterized in that In step (2), the reactive dye is selected from one or more of reactive red 195 dye, reactive blue 194 dye and reactive yellow 194 dye.

8. The preparation method according to claim 7, characterized in that In step (2), the liquid carrying rate of the atomized fabric is 30-70%.

9. The preparation method according to claim 5, characterized in that In step (3), the color fixing conditions include: temperature of 30-60° C. and time of 30-240 min.

10. Cellulose ash cloth prepared by the method according to any one of claims 1 to 9.

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