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The printed fabric is processed by the printing machine. The printing effect of rotary screen printing is closely related to the important parts of rotary screen printing machine - rotary screen, scraper and printing guide belt.
1. The medium of the circular network
The traditional round net is divided into 40 mesh, 60 mesh, 80 mesh, 100 mesh, 105 mesh, 125 mesh, 135 mesh, 155 mesh, 165 mesh, 185 mesh, 195 mesh and so on according to the number of meshes.
According to the nominal circumference, there are 640 (mm), 726 (mm), 820 (mm), 914 (mm), 1018 (mm) and so on. According to the width of the rotary screen, there are 1400 (mm), 1600 (mm), 1800 (mm), 2000 (mm), 2200 (mm), 2400 (mm), 2600 (mm), 2800 (mm), 3000 (mm) ), 3200 (mm), 3400 (mm), 3600 (mm), etc.
In recent years, due to the expansion of the application field of the rotary screen, the rotary screen is divided into a printing rotary screen and a special rotary screen according to its purpose. PE punched mesh, etc. Among them, the textile printing rotary screen has the longest history and the largest amount.
According to the number of meshes and the structure, the rotary net of Stork company in the Netherlands can be divided into:
(1) Standard network (Standard). According to the design, it is a hexagonal mesh, and the mesh is based on the axis of the cylinder, according to 00, 600, 120. Axisymmetric distribution in three directions. The 40-mesh and 60-mesh meshes are suitable for printing all over the ground with large flowers and infiltration printing on thick cloth; the 80-mesh mesh is suitable for the outline with a minimum fineness of 0.3mm. The 80H mesh is suitable for halftone printing (using SCR 6480 mesh plate); the 100 mesh mesh is suitable for surface printing, printing outlines and fine patterns with a fineness of 0.25 mm.
(2) Panta. Divided into 105 mesh, 125 mesh, 155 mesh, 185 mesh and other meshes, the meshes are symmetrically distributed in three directions of 300, 900 and 150" based on the axis of the cylinder. The 125 mesh mesh is suitable for large flowers, surface and penetration printing. ; 155 mesh is suitable for all over the floor, halftone printing, discharge printing and resist printing on light fabrics, and can print geometric patterns with horizontal and vertical lines; 185 mesh is suitable for very fine halftone printing and Printed outlines, geometric patterns with horizontal and vertical lines; 215 mesh for halftone printing.
(3) R1 fee network (Nova). Divided into 135 mesh, 165 mesh, 195 mesh and other meshes, it has a high performance-price ratio, and the high-mesh large-hole river screen printing paste can be circulated better. This kind of net can do printing with metal components and critical printing paste, can print white paint, and the scanning width can be increased by 3 times. Even very fine patterns with metallic luster can be printed without blocking the screen, and the smoothness of discharge fine printing is enhanced. Nova Nets are nets specially developed for printing the most delicate halftone patterns. In order to achieve the ideal printing effect, especially for high-grade patterns, it is necessary to consider the selection of mesh blanks with special specifications, such as ED mesh with special thickness, V mesh for geometric patterns, H mesh for multi-level moiré, DL mesh for opening The porosity is small, suitable for general deep and shallow layers.
