Net-knot-free screen printing plate

Abstract

The invention discloses a net-knot-free screen printing plate. The net-knot-free screen printing plate comprises a net frame; a plurality of warps and a plurality of wefts are installed in the net frame, wherein the warps and the wefts are formed by stretching a wire mesh, the warps are arranged in parallel, and the wefts are also arranged in parallel; the warps and the wefts are perpendicularly arranged, contacting positions between the warps and the net frame and between the wefts and the net frame are fixed through sticking, a printing figure is installed in the middle of the net frame, and transverse printing lines in the printing figure are located in the middle of a grid parallel to the direction of the warps; and a longitudinal figure frame, a longitudinal grate-breaking prevention vertical line and the longitudinal main grate edge of the printing figure are all of a waved structure. According to the net-knot-free screen printing plate, interference of net knots is avoided, so that a printed line is thinner and higher, and product photovoltaic conversion efficiency is promoted.

Description

technical field [0001] The invention relates to the application field of a knotless screen plate, in particular to a knotless screen plate suitable for printing in the fields of solar cells and microelectronics. Background technique [0002] At present, the traditional screen printing screen is made of mesh stretched by a certain tension, then bonded to the screen frame, and then pre-treated to remove grease and impurities, then coated with photosensitive adhesive, solidified by printing, developed and rinsed to form a pattern. On the one hand, the function of the mesh is to support the photosensitive adhesive and form a pattern; on the other hand, it is to adjust the penetration of the slurry. The mesh is alternately woven through the warp and weft yarns. The material of the mesh is mainly polyester Fiber, nylon fiber, metal material or composite material, etc. After the mesh is stretched under a certain tension, it is directly bonded to the screen frame to form a screen, o...

AI Technical Summary

Problems solved by technology

[0003] The currently disclosed knotless screens either use conventional stretching technology when stretching the net at an angle of 90°, or use point-by-point positioning technology to use curing glue to fix the four sides of the stainless steel wire mesh on the polyester mesh point by point at intervals of 0.5-2cm. The knotless screens produced by the above technology have their own defects. The warp and weft of the screen in the conventional stretching method are not straight, so after the stretching is completed, the warp and weft are curved, which will cause the drawing of subsequent graphics. It is very difficult to align with the film, which seriously affects the yield rate; although the point-by-point positioning method can ensure that the longitude and latitude lines are straight and not bent, the point-by-point positioning is required, which severely restricts production efficiency and is not suitable for mass production.

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