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PCB Exposure

How to Determine The PCB Exposure Time & Positioning?

December 28, 2021 / , ,

PCB exposure means that under UV irradiation, the photoinitiator absorbs light energy and decomposes into free radicals, which then lead to the polymerization and crosslinking reaction of luminescent polymerized monomers. After the reaction, a large molecular structure insoluble in dilute alkali solution is formed. Exposure is generally carried out in the automatic double-sided exposure machine. …

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PCB Manufacture Process: PCB Exposure

December 23, 2021 / ,

PCB circuit board exposure includes circuit exposure and solder resist exposure. The function is to solidify the irradiated local area through ultraviolet irradiation, and then develop it to form circuit pattern or solder resist pattern. The process of line exposure is to paste the photosensitive film on the copper clad laminate first, and then expose …

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