Three-dimensional mask plate for printing

Abstract

The invention discloses a three-dimensional mask plate for printing. The three-dimensional mask plate comprises a substrate, and a printing surface and a printed circuit board (PCB) surface, which are arranged on two sides of the substrate, and the mask plate is provided with a plurality of graphic openings and a three-dimensional structure, and the three-dimensional structure comprises a projection area on the printing surface and a concave area on the PCB surface. The mask plate is provided with the three-dimensional projection part and the three-dimensional concave part, the projection height is 0.1 to 10mm, the concave depth is 0.1 to 10mm, and angles formed between the projection part and the plate surface and between the concave part and the plate surface are 80 to 90 DEG; the composition of the mask plate is 56 to 62 percent of iron and 38 to 44 percent of nickel, and the mask plate is high in precision; the mask plate is high in uniformity, good in plate surface quality, bright and free from rough spots, scratches and pin holes; the opening quality is good, and the hole wall is smooth and free from burrs; and the mask plate is low in production cost, simple in process and low in energy consumption.

Description

technical field [0001] The invention relates to a three-dimensional mask, in particular to a three-dimensional mask for printing. Background technique [0002] Surface Mount Technology (SMT for short) was born in the 1960s. [0003] SMT is to use certain tools to accurately place non-lead surface mount components on PCB pads that have been printed with solder paste or glued, and then undergo wave or reflow soldering to establish a good relationship between components and circuit boards. mechanical and electrical connection. [0004] The development of the PCB industry is not limited to flat templates. The existing PCB is developing rapidly. Some positions with specific requirements require concave parts, such as embedded bumps and printed boards, to meet the soldering of larger components on the PCB, and Does not affect the overall printing effect, it is required to reduce the transfer along with the convex part of the metal mask. Therefore, the metal mask is required to ...

AI Technical Summary

Problems solved by technology

However, the opening precision of the steel mold made by the traditional technology through laser cutting technology cannot meet the requirements, and the quality of the board surface is not high enough.

However, the electroformed nickel mask is easy to form pinholes and rough spots on the surface of the plate, and the solution is unstable, high cost, and high energy consumption.

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