Research on Pretreatment and Steaming Conditions of Digital Inkjet Printing on Cotton Fabrics

Printed textiles have a long history. They have been widely used in fabrics, interior fabrics and industrial fabrics, and have a profound influence on people's lives. The development of science and technology has led to the development of printing and dyeing technology. Inspired by paper printing technology, digital ink jet printing technology that integrates computer technology, white motion technology, software development, and traditional printing and dyeing technologies has gradually appeared in front of the general public. And it is getting more and more attention from all parties.

There are two types of digital printing processes, continuous jet and on-demand jet. Compared with traditional printing, digital printing has outstanding characteristics: 1 The print pattern has high precision and rich colors. The drastic increase in the fineness of digital printing has provided designers with a wealth of imagination, making it possible to produce high-resolution textiles and textiles. 2 batch flexibility. Suitable for the market's popular "small-batch, multi-variety" production. 3 Short production cycle. The pattern used for digital printing can be modified at will by the computer. It is convenient and quick, and 1 to 2 hours of finished products can be handed to meet the personalized needs of consumers wearing or decorating. 4 The degree of pollution has been greatly reduced. On-demand dripping, reduced pigment and colored wastewater, no powdered dyes, and low noise. 5 covers an area of ​​small. Can be printed in offices and homes [1-5].

1 test

1.l Materials and Equipment

Fabric: Pure cotton bleached plain cloth (58tex×58tex, 300 pieces/10cm×300 pieces/10cm)
Dyes: Active Ink Black, Red, Yellow (Hangzhou Honghua Digital Technology Co., Ltd.)
Drugs: sodium alginate, white dextrin, anhydrous sodium sulfate, sodium bicarbonate, sodium carbonate, urea (chemical purity), new alkali agent ESS, alkali-resistant penetrant CP105 (industrial products)
Instrument: DK98 double-hole water bath (Yuyao Dongfang Electric Instrument Factory), DV1 digital rotational viscometer (Shanghai Qunhe Scientific Instrument Co., Ltd.), JMV505T vertical rolling mill (Beijing Textile Machinery Research Institute), digital inkjet Printing Machine (Hangzhou Honghua Digital Technology Co., Ltd.), SW-12A Wash Fastness Tester (Wuxi Textile Instrument Factory), Computer Color Matching Color Matching System MINOLTACM-3600D (IRINEXTRIN Dyeing Technology Co., Ltd.), Type Y571A Dyeing Friction Fastness Tester (Zhejiang Wenzhou Textile Instrument Factory), Q-SUN Solar Fastness Tester (Dongguan Dongming Instrument Co., Ltd.)

1.2 Test methods

Reactive dye inks for digital inkjet printing require pretreatment of the fabric. The pretreatment working fluid mainly consists of alkali, urea and sodium alginate. The pretreated fabric can be inkjet-printed after drying. The ink-jet printed fabric must be steam-fixed.

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