Research on Digital Printing Technology of Wool Fabrics

Abstract: In this paper, a homemade digital pigment printing ink was used to test the digital printing of wool. After the wool fabric has been sprayed with pretreatment, digital printing, steaming and fixing, and washed and floated, a high-quality printing pattern with vivid colors and soaping fastness of 4 or higher can be obtained, which basically reaches the printing level of imported ink of the same type. In addition, the ink is stable and inexpensive: only one-fifth of imported ink. This ink can also be used for paper printing, which is conducive to the operation of the printer.

Keywords: digital printing ink jet food pigment wool fabrics environmental protection

Foreword

Digital printing is textile computer inkjet printing. The technology does not need to make plates, can be made into small batches, many varieties, fast delivery, water saving, energy saving, saving dyes and materials, achieving civilization, clean production, thus completely changing the appearance of the printing and dyeing workshop, fashion for the clothing industry, personality Chemicals provide the necessary conditions. This technology will surely have a broad space for development in the 21st century. However, due to the high price of imported ink, digital printing has not been widely used. In response to this situation, this group of researchers conducted several experiments and independently developed another set of ink for jet printing [1]. We chose food pigments as the main ingredient of the ink for safety and environmental protection. The semi-lethal doses released by FAO and WHO in 1985 were: Edible lemon yellow: ld5015.75g/kg, edible amaranth: ld50> 10g /kg consumption of bright blue: ld50> 200mg/kg [2], from the above safety indicators, the above dyes are absolutely safe, the author of this article had performed food dyeing textile dyeing [3,4], and food pigments as ink There is no relevant report on digital printing technology at home and abroad. The development of food pigment printing inks for high-grade fabrics such as wool caters to people's desire for independence, comfort, and safety. It will surely have a bright future.

The research group selected the US-based encad wide-format inkjet printer widely used in the domestic advertising industry, which is widely used in the domestic advertising industry, and cooperated with the large-scale printing software: Mengtai (Professional Edition) and combined with sheep pre- and post-processing technologies. This experiment.

1 Experimental section

1.1 Experimental Materials

1.1.1 Dyes

a. Edible lemon yellow [5] namely ci edible yellow 4 (19140)

Structural formula:

b. Edible Amaranth [5] namely ci Edible Red 9 (16185)

Structural formula:

c. Edible bright blue [5] namely ci food blue 2 (42090)

Structural formula:

d. Mixing edible black

The above pigments are produced by Shanghai Dye Research Institute

1.1.2 Textiles

This white wool gabardine, provided by Beijing Wool Textile Factory.

1.1.3 Reagents

Acetic acid, anhydrous sodium sulfate, urea, phenol, organic solvents, solid acids, retention agents, dye solubilizers, natural slurries, and synthetic slurries are chemically pure reagents. (to be continued)