Design Suggestions for PCB Pressing Structure of Lauffer Laminating Machine

2022-01-21 10:13

The main purpose of PCB lamination is to make PP combine different inner core boards and outer copper foils through "heat and pressure", and use the outer copper foil as the base of the outer circuit. However, different PP compositions with different inner layers and copper can be used to prepare circuit boards with different specifications and thicknesses. The lamination process is the most important process for PCB multilayer board manufacturing, and the basic quality indicators of various PCBs must be achieved after lamination.

For the pressing structure design of PCB board, the Lauffer laminator has collected the following suggestions on the network:
1. give priority to the thickness of the larger thin core (dimensional stability is relatively good)
2. Priority should be given to PP with low cost (for the same glass cloth type PP, the resin content basically does not affect the price)
3. It is preferred to use a symmetrical structure to avoid PCB warping after the finished product. The following figure is not called the structure and is not recommended.
4. Dielectric layer thickness "inner layer copper foil thickness x 2
It is forbidden to use PP with low resin content in single sheet for 5.1-2 layers and n-1 layers/n layers, such as 7628 × 1(n is the number of layers)
6. For 3 or more prepreg sheets arranged together or the thickness of the dielectric layer is greater than 25mil, PP is used in the middle except for the outermost layer and the innermost layer.
7. When the second and n-1 layers are 2oz bottom copper and the thickness of 1-2 layers and n-1/N layers of insulating layer is "14mil, it is forbidden to use single PP, and the outermost layer needs PP with high resin content, such as 2116 and 1080; If the residual copper rate is less than 80%, try to avoid using single 1080PP
8. When one sheet of PP is used for 1-2 layers and 1-n-1 layers/N layers of copper 1oz in the inner layer, the PP shall be of high resin content, except 7628 × 1
9. It is forbidden to use single PP for boards with inner copper ≥ 3oz. Generally, 7628 is not needed. Multiple PP with high resin content, such as 106, 1080, 2116......
10. For multilayer boards containing copper-free areas greater than 3 "× 3" or 1 "× 5", PP is generally not used for single core boards.









Previous Page

Brief Introduction of PCB Vacuum Laminating Machine

The advantages and disadvantages of various laminators

Next Page

Previous Page

Brief Introduction of PCB Vacuum Laminating Machine

Next Page

The advantages and disadvantages of various laminators

More news

Jiangsu Shengyi High Frequency Communication Substrate Project Foundation Laying Ceremony Held

Jiangsu Shengyi High Frequency Communication Substrate Project Foundation Laying Ceremony Held

On the morning of December 17, 2017, the groundbreaking ceremony of Jiangsu Shengyi Special Materials Co., Ltd., invested by Guangdong Shengyi Technology Co., Ltd., was held in Nantong Tongzhou National High-tech Development Zone, which is known as "the first state of Tongjiang and Dahai. Liu Shufeng, chairman of Guangdong Shengyi Technology Co., Ltd., Chen Renxi, general manager, Wu Xiaolian, chief operating officer, Zeng Xutang, chairman of Shaanxi Shengyi Technology Co., Ltd., Yang Hui, general manager, Jiao Feng, general manager of Suzhou Shengyi Technology Co., Ltd., Wang Hui, general manager of Changshu Shengyi Technology Co., Ltd., and representatives of the design, supervision, cost and construction units responsible for project construction attended the ceremony.

2024/03/01

LAUFFER high-frequency board press: high-frequency high-speed substrates will usher in high-speed growth in the 5G era.

LAUFFER high-frequency board press: high-frequency high-speed substrates will usher in high-speed growth in the 5G era.

LAUFFER high-frequency board press collects relevant information of 5G high-frequency and high-speed substrates for you on the Internet.

2024/03/01

Jiangxi Jiujiang PCB Project Formed a Complete Industrial Chain

Jiangxi Jiujiang PCB Project Formed a Complete Industrial Chain

In 2017, Jiangxi Jiujiang Economic Development Zone always regarded investment promotion as the "lifeline" of accelerating development, further innovated the investment promotion system and mechanism, changed the investment promotion thinking, adhered to the "two-wheel drive" to promote development, focused on industrial introduction projects, and achieved a detonating effect New breakthroughs in the recruitment of emerging industries. In the whole year, 73 new industrial projects were signed, with a total investment of 63 billion billion yuan, and the proportion of strategic emerging industry projects increased by 37%. In the electronic circuit materials industry, the development zone mainly focuses on Taiwan-funded Dehong fine yarn and the world's second-largest Shengyi copper clad laminate project, resulting in investment in 3 billion yuan Dehong glass fiber yarn and electronic cloth project,

2024/03/01