如果您了解过有关柔性电路的知识,就会知道上面有一层覆盖层。在柔性线路上粘贴覆盖层是为了防止其受到灰尘、湿气等的损坏。同时,它还起到绝缘作用。我们已经了解了在柔性电路上粘贴覆盖层的好处,但是如何粘贴覆盖层呢?让我们来看看。
首先,我们需要准备覆盖材料,检查烙铁是否有电,清洁烙铁和无尘纸的残留物。
FPC贴保护膜的步骤:
- 检查覆盖膜和薄膜是否有问题,包括漏孔、漏钻、覆盖膜毛刺太大等。然后用包装清洁剂清洁覆盖膜表面的灰尘。
- Cleaning the worktable and putting the coverlay, soldering iron and other tools in the right place.
- Checking whether there are oxidization, litter, dust etc. on the flex circuits to be pasted.
- Pasting the coverlay should follow the requirements of process and the MI data. It should be strictly follow the “C”marking line, pad or counterpoint hole when align.
- How to peel the coverlay off: putting the covelay on the optical desk, but please remember that the release film is facing up and the coverlay is facing down. After that, holding the coverlay then peeling off the release film slowly.
peeling the coverlay off
- Fixing the coverlay on FPCwith soldering iron after the coverlay is aligned with the “C” marking line of the flex circuit board and ensure it is correct, so that the coverlay can not deviate or peel off. However, please remember the soldering iron can not burn the products.
pasting coverlay on FPC
- Single-side lamination: after pasted the coverlay on FPC, it should be gone through the machine with temperature between 160°C-165°C. Next, until the board got cold, the release film should be peel off and carry out the single-side lamination and self-checking.
Notices:
1. It is necessary to wear rubber gloves to prevent the flexible printed circuit board from oxidization or dirty.
- It must be kept clean during pasting coverlay on FPCto prevent there are dirty residues on flex circuits.
- It is required to check whether the coverlay is broken, wrinkled, scratched, etc..
- Do not wear accessories to avoid scratching the board.
- It is necessary to confirm that the coverlay leave a little bit space for plating if the flex circuitsare tin or gold plating.
- The hand could not beyond the handle to avoid burning when holding the soldering iron.
Best Technology is the premier expert in the manufacture of electronic components, brings a unique combination of technology and quality that offers a competitive supply of flex circuits and rigid-flex circuits and other flexible circuit products. With high qualified engineers, we are able to help you find a FPC with high quality. To find out more, contact Best Technology at 0755-29091601 or check the website: Contact Us