These bottlenecks of traditional silk screen printing are the unique advantages of digital printing technology.
The domestic digital printing industry started in 2001. The earliest
digital printing technology was applied to the fields of packaging,
marking, advertising and printing. In the last decade, digital jet
printing has made rapid development in 3D forming, ceramic industry and
medical angioplasty. Digital printing technology uses addition method.
Compared with the traditional process, it can simplify the process,
shorten the production cycle, reduce material waste and improve energy
utilization. In the case of the same automatic production line, compared
with the traditional silk screen printing production line, it can
improve the production efficiency by 2 times or even higher. This is
also the main reason why the PCB industry regards digital printing as a
new driving force for the development of PCB manufacturing.
具化到一个工艺来看，传统丝印阻焊工艺的工序至少有10道，丝网印刷需要印制网板，一版一用，还需要重复洗网，需要用到的洗型槽模具 一次性止血带 保定水处理设备 一次性止血带 保定空压机 北京真空泵网剂又是环保限制排废的化工品，并且，据我们了解，现在市面上最高精度的丝网生产线能够做到的阻焊桥的最小限值是2.5mil，市场主流精度在6mil左右。这对于日后芯片微小化的发展趋势来说，显然是一种限制。
From the perspective of a specific process, there are at least 10
processes in the traditional silk screen printing solder resist process.
Screen printing requires printing screen boards, one plate for one use,
and repeated screen washing. The screen washing agent required is also a
chemical product that limits waste discharge by environmental
protection. Moreover, according to our understanding, the minimum limit
of solder resist bridge that can be achieved by the most accurate screen
production line on the market is 2.5mil, The mainstream accuracy in the
market is about 6mil. This is obviously a limitation for the
development trend of chip miniaturization in the future.