Process Classification of Digital Printing

1. Thermal transfer method

Thermal transfer is a new printing process. Thermal transfer printing is to print ink on paper (coated), and then use thermal transfer printing machinery to transfer the pattern on the paper to textiles.

The process printing method is divided into two parts: transfer film printing and transfer processing:

The transfer film printing adopts dot printing (resolution up to 300dpi), and the pattern is printed on the surface of the film in advance. The printed pattern has rich layers, bright colors, kaleidoscopic, small color difference, good reproducibility, and can meet the requirements of the designer, and Suitable for mass production.

The transfer process transfers the exquisite pattern on the transfer film to the surface of the product through a heat transfer machine (heat and pressure). The ink layer and the surface of the product melt into one body after forming, which is vivid and beautiful, which greatly improves the quality of the product.

Fedar FD61915E is the best in digital printing machine: it adopts thermal transfer printing process. It is equipped with 15 Epson I3200-A1 nozzles, which can print 610 square meters per hour, and the platform accuracy error is 5 threads. The use of ultra-high-density ink and 31 grams of paper is used, which saves costs even more. It is favored by the majority of large-scale digital printing processing factories.

Fedar FD61915E digital printing machine

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2. Digital direct printing

Digital direct-injection printing is suitable for reactive, acidic, paint, and dispersive inks. Digital direct-injection printing is a process of direct printing on semi-finished textiles that have been sizing.

3. Cold transfer method

Same as thermal transfer, it is necessary to print the ink on the paper first, and then use the special machine to imprint the paper and fabric to realize the transfer of the pattern. 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).

Classified by dyes and processes

1. Disperse digital printing

At present, more than 50% of the printing inks in our country are disperse dye inks, which are used for polyester fiber and other chemical fiber fabric printing; disperse dyes are a kind of low water solubility, and use the action of dispersing agent when printing. The tiny particles are mainly high in water. Non-ionic dyes that exist in a dispersed state.

2. Reactive digital printing

Reactive dye ink accounts for about 29%, mainly used for silk, cotton, rayon and linen fabric printing; reactive dyes, also known as reactive dyes. This type of dye separation contains genes that can chemically react with the fiber. When printing, the dye reacts with the fiber, forming a covalent bond between the two to form a whole, which improves the fastness to washing and rubbing.

3. Acid digital printing

Acid dye ink has a small specific gravity and is mainly used for printing on wool, nylon, silk and other fabrics. Acid dyes are a type of water-soluble dyes with acidic groups in the structure, which are printed in acidic media. Acid dyes have bright colors and complete chromatograms. It is mainly used for dyeing and printing of wool, silk and nylon. It can also be used for leather, paper, ink, etc.

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