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Technical ArticleWhy is film important in PCB manufacturing?Time：2019-07-26 21:29:42 Click：
As you probably know, the film is just like the same as the mold.
Since the substrate of PCB is a copper clad laminate. When making a PCB, it is pretty necessary to etch away the unused copper foil, which is exactly the place where the film works.
In other words, film is to transfer the drawing into the copper clad laminate.
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