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High-fastness natural dye printed product and preparation method thereof

A natural dye and printing technology, which is applied in dyeing, textile and papermaking, fiber treatment, etc. It can solve the problems of hard hand feeling, excessive heavy metals, uneven color of large-area printing, etc., and achieve the effect of uniform color and soft hand feeling

Active Publication Date: 2015-09-09
GUANGDONG ESQUEL TEXTILES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the object of the present invention is to provide a natural dye resist printing product and its preparation method. Problems such as uneven printing color

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The present embodiment provides a kind of preparation method of chlorophyll natural dye resist printing product, it comprises the following steps:

[0026] The pure cotton woven fabric after desizing, scouring and bleaching is placed in a cationic modification solution with a liquor ratio of 1:8 (the cationic modifier (2,3-epoxypropyltriethyl ammonium chloride) with a concentration of 15g / L and caustic soda with a concentration of 5g / L) for modification at 70°C for 1 hour, then washed with water twice (from room temperature to 65°C) and 1 g / L once Pickling with acetic acid solution (at room temperature), then drying and coiling;

[0027] Prepare printing paste (by weight percentage, the printing paste includes 2% NaOH, 7% sodium alginate, and the balance is water), and bake at 130°C for 150s after rotary screen printing. After three washes with warm water at 40°C, pickling with 0.5g / L acetic acid solution and one wash with warm water at 40°C, then dry and roll;

[002...

Embodiment 2

[0031] The present embodiment provides a kind of preparation method of carmine natural dye resist printing product, it comprises the following steps:

[0032] The pure cotton knitted fabric after scouring and bleaching is placed in a cationic modifying solution with a bath ratio of 1:10 (the concentration of the cationic modifier (double reactive group cationic modifier) ​​in the modified solution is 15g / L, the concentration of caustic soda is 5g / L) after modification at 70°C for 1 hour, after 2 washes with water (from room temperature to 65°C) and 1 pickle with 1g / L acetic acid solution (at room temperature), Then carry out shaping, and the knitted fabric after shaping is made into knitted sweater according to the requirements;

[0033] Prepare printing paste (in terms of mass percentage, the printing paste includes 2.5% NaOH, 10% sodium alginate, and the balance is water), print the paste at the position that needs to be printed, and print it at 140 ° C after flat screen pr...

Embodiment 3

[0037] The present embodiment provides a kind of preparation method of sorghum red natural dye resist printing product, it comprises the following steps:

[0038] With the pure cotton woven fabric of desizing, padding contains 50g / L cationic modifier CR-2000 (produced by U.S. Dow Chemical Company), 12g / L caustic soda, 25g / L refining agent Noveco (Turner Trading (Shanghai) Co., Ltd.) and 30g / L hydrogen peroxide (the mass concentration of hydrogen peroxide is 27.5%) solution, the liquid-carrying rate is controlled at 120%, stacked at room temperature for 24 hours, washed by 2 channels of hot water at 80 ℃, and 1 channel at 40 ℃ washing with warm water, one pickling with 0.5g / L acetic acid solution and one wash with warm water at 40°C, drying and rolling to obtain pretreated woven fabrics;

[0039] Prepare the printing paste (by weight percentage, the printing paste includes 1.5% NaOH, 8% sodium alginate, and the balance is water), steam at 102°C for 10min after rotary screen print...

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Abstract

The invention provides a high-fastness natural dye printed product and a preparation method of the high-fastness natural dye printed product. The method comprises the following steps: performing pre-treatment and cationic modification on a fabric; preparing a cation removing printing work liquid, performing cation removing printing on the fabric after the cationic modification, and baking or steaming; and dyeing the fabric after the cation removing printing by using a natural dye so as to obtain the high-fastness natural dye printed product. The preparation method disclosed by the invention can be used for solving the problems that heavy metal in a natural dye printed product is out of standard, the hand feeling is slightly hard, the color fastness is poor, the large-area bottom color is not uniform, and the like.

Description

technical field [0001] The invention relates to a natural dye resist printing product and a preparation method thereof, belonging to the technical field of textile dyeing and finishing. Background technique [0002] Natural dyes refer to dyes obtained from plants, animals or mineral resources, without artificial synthesis, with little or no chemical processing. Because of its renewable, sustainable development, environmental protection and other characteristics, coupled with the attractive patterns and complex changes of natural dye printing products, it belongs to a higher-end category of products and is widely loved by people. However, the poor color fastness of natural dye printing products, the light color of printed parts, and the complexity of printing have limited its development. Conventional natural dye printing products are mainly printed by adding heavy metal mordants or adding resins. It causes problems such as excessive heavy metals, hard hand feeling, poor co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/34D06P5/22D06M13/463D06M13/46
Inventor 徐伟杰周立明张玉高
Owner GUANGDONG ESQUEL TEXTILES CO LTD
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