Process introduction of digital printing machine

by:angelacrox     2021-09-06
Digital direct-injection printing machine The digital direct-injection printing method is suitable for dispersing, acid dyes, coatings, and reactive inks. The digital direct-injection printing method is a process of direct printing on semi-finished textiles that have been sizing. The process is: according to textiles Select the corresponding ink, design the pattern, sizing, and then go to the textile direct-injection printing machine for direct printing, and then dry, steam, wash, dry, and soften the shape (the paint only needs to be baked (That is to fix the color) 2. Thermal transfer method Thermal transfer printing is to print textile dyes on paper (with coating), and then use thermal transfer printing machinery to transfer the patterns on the paper to textiles. The advantage is that the accuracy is relatively high, but the printing efficiency is low. It can only be made of polyester or high-polyester textiles. Among them, the transfer fabrics are processed by semi-finished products and have not been added with softeners (the addition of softeners may affect Coloring rate). 3. Cold transfer method Like thermal transfer, it is necessary to print textile dyes on paper first, and then use special machinery to emboss the paper and fabric to realize pattern transfer. The embossed fabric has two treatment methods, one is traditional steaming, washing, setting and other traditional processes; the other is cold reactor chemical reaction treatment and fixation (the fabric needs to be chemically treated in advance). Using reactive, dispersive, acidic and other dye inks, this process is applicable to fabrics other than blended fabrics. 2. Classification by dyes and processes 1. Disperse digital printing. At present, more than 50% of printing inks in our country are disperse dye inks, which are used for printing on polyester fibers and other chemical fiber fabrics; disperse dyes are a type of low water solubility, which can be The role of dispersant is a non-ionic dye in which tiny particles are mainly present in a highly dispersed state in water. 2. Reactive digital printing Reactive dye ink accounts for about 29%, mainly used for silk and cotton fabric printing; reactive dyes, also known as reactive dyes. It is a type of dye that reacts chemically with fiber during dyeing. This type of dye separation contains genes that can chemically react with the fiber. During dyeing, the dye reacts with the fiber and forms a covalent bond between the two to form a whole, which improves the fastness to washing and rubbing. The active fuel molecule includes two main components: the parent dye and the active group. The group that can react with the fiber is called the active group. At present, it is mainly used in woven and knitted fabrics such as cotton, hemp, and silk, or fabrics with higher ingredients. 3. Acid digital printing Acid dye ink has a small proportion, accounting for about 7%. It is used for printing on wool, nylon and other fabrics. Acid dyes are a type of water-soluble dyes with acidic groups in the structure, which are dyed in an acid medium. Most acid dyes contain sodium sulfonate, which is soluble in water, bright in color and complete chromatogram. It is mainly used for dyeing wool, silk and nylon, but also for leather, paper, ink, etc. Generally no tinting power to cellulose fibers. 4. Pigment ink digital printing The use of pigment ink in my country is relatively small, less than 2%, most of which are foreign products. 3. Classification according to fabric composition Digital printing based on cotton, but reactive dye inks can also be used for hemp and silk; 2. 2. Digital printing with chemical fiber as the main product, using disperse sublimation dye ink production and chemical fiber dispersion direct-injection digital; 3. For some blended fabrics such as T/C, the fabrics that cannot be operated with reactive, disperse, or acid dye inks can be printed with paint ink. 4. Digital printing, mainly nylon and wool, is produced with acid dye inks, and silk can also be used.
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