Polyester fiber fabric is the most common type of synthetic fiber because it has the characteristics of stiff, non-wrinkle, easy to wash and dry, durable, and high color fastness. There are many varieties of polyester fabric printing, and the development of filaments is the fastest. It has gone through three major stages: ordinary polyester silk, alkali reduction simulation silk, and fine denier fiber simulation yarn, especially after the 1980s, polyester fine denier fiber, ultra-fine fiber The appearance of fine denier fiber makes its printing varieties more diverse and becomes an important part of silk printing varieties. Woven Polyester Twill Dyed Fabric Supplier will give you a detailed introduction to polyester printing.
The fine denier fiber refers to a filament fiber having a monofilament fineness of 0.44 to 1.1 dtex, and a filament lower than 0.11 dtex is referred to as a super fine denier fiber. Fine denier fiber has low denier, large surface area, good hygroscopicity and compact structure. Therefore, fine-denier fiber fabrics have many characteristics of silk fabrics, such as soft hand, soft luster, good drape, good breathability and moisture transmission, etc., so it is called artificial silk, because of its excellent wrinkle resistance and washability. It is the main variety favored by consumers in spring and autumn, especially in summer. As the main products of clothing fabrics, there are artificial silk (such as spinning, silk, and chiffon, chiffon crepe, cilan, crepe satin), imitation buckskin, peach skin, and ultra-high-density fabrics. The ratio of woven fabrics to knitted fabrics is large. In domestic artificial silk fabrics, fine denier filaments of about 1.1 dtex are generally used as raw materials. The appearance of flannel, coral fleece, fleece and other fabrics produced by polyester has enriched the variety of home textiles and expanded the variety of printed products.
Polyester Fabric printing orders encountered in production are large in batches, and the printing equipment is mainly screen printing machines. When the flower back is not too large, flat and light fabrics are mostly printed with flat screen, thick and fluffy fabrics are mostly printed with round screen, and decorative fabrics are mostly transferred with printing. According to the printing process, direct printing products account for the vast majority. Anti-discharge printing products are increasing.
The characteristics of polyester fiber determine its printing process:
(1) Low humidity requirements. Polyester has no hydrophilic gene and is a hydrophobic fiber. Based on similar compatibility principles, dyes should be water-insoluble. Therefore, disperse dyes are special dyes for printing. The reaction in the printing process is represented by less hygroscopic agent in the color paste, less pulp during printing, and not too high humidity during steaming to ensure the sharpness of the pattern outline.
(2) High temperature steaming is required. Polyester macromolecules have high crystallinity and orientation, close molecular arrangement and small microgap. Therefore, similar to the dyeing process, disperse dyes need to be fixed under high temperature after fabric printing.
(3) Twice heat setting is required. Polyester is a thermoplastic fiber, which will deform under high temperature. In order to eliminate internal stress and stabilize the fabric shape and door width, heat setting must be performed before and after printing.
The above is the information about polyester printing introduced by the supplier of Bedding Twill Printed Fabric Factory.