What is pigment printing and its application?
Pigment printing uses thermosetting or thermoplastic synthetic resin as a binder, mixed with insoluble pigments to form a pigment printing paste, which is coated on the surface of the fabric by mechanical or manual methods, and a film is formed after drying and baking , So that the pigment is tightly covered on the fiber, in order to achieve the purpose of printing and coloring. Pigment printing paste products are generally composed of pigment paste, adhesive, photolinking agent and emulsified paste, which can be mixed during use.
1. The printed printed fabric has bright and gorgeous color and good light stability. It can give the fabric a plump, dry and soft hand feeling, especially excellent rubbing fastness. The wet and dry rubbing fastness can reach ≥ 4 grades (for reference only) when used correctly, the washing fastness is excellent, and the fabric has good air permeability.
2. The printing paste has excellent chemical and physical stability and is not affected by the components of the printing paste. The screen has good permeability and the printing machine is easy to clean.
How to distinguish paint printing and dye printing
By comparing the hardness difference between printed and unprinted parts on the same fabric, pigment printing and dye printing can be distinguished. The pigment-printed area feels a little harder than the unprinted area, maybe a bit thicker. If the fabric is printed with dyes, there will be no significant difference in hardness between the printed and unprinted parts.
Pigment printing has a long history. A long time ago, people used water-insoluble pigments and added natural polymers such as proteins and glues as binding materials to adhere the pigments to the fabric. At that time, due to the limitation of chromatogram, and more importantly, the inadequacy of natural bonding materials such as inability to wash and feel bad, it was not suitable for clothing fabrics, which restricted the development of pigment printing.
With the development of polymer chemistry, various series of adhesives and organic synthetic coatings have developed rapidly. Various coatings with complete chromatograms, bright colors and good fastness have come out one after another. Modern pigment printing products are wear-resistant, Flexibility, wrinkle resistance, hand rub resistance and water washing resistance fully meet the requirements of taking. With the development of synthetic fibers and various forms of blended fabrics and the development of paint varieties, pigment printing has increasingly demonstrated its superiority. The improvement of adhesive properties, the emergence of synthetic pastes, and the application of hand-feel modifiers will enable pigment printing to have broader development prospects.