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Korean engineers tout eco-friendly PCB prod technique

Posted: 19 Feb 2007 ?? ?Print Version ?Bookmark and Share

Keywords:PCB? multilayer PCB? copper? Korea Institute of Industrial Technology?

The Korea Institute of Industrial Technology announced that a team of engineers led by Kang Kyung-tae has developed an eco-friendly PCB production technique. The new method adopts techniques used by inkjet printers in producing multilayer flexible PCBs, in which copper pathways are being sprayed onto a nonconductive substrate, forming the PCB's base.

PCBs are the plates on which memory chips, CPUs and other electronic components are mounted. These components are linked by copper pathways that are created when most of the blank copper plate originally fused onto the substrate is etched away through a liquid rinsing procedure.

The finished products that leave only thin copper traces over a nonconductive substrate are cheap and reliable. However, these products cause environmental pollution because liquid copper waste is produced.

The discovery of this new technique is significant especially with the tough environmental standards imposed worldwide. "If this process is put into widespread use, it can to a large extent solve the problem of wasted copper in PCB manufacturing," said Kang. Kang added that the new method could significantly reduce production costs because less copper will be required to produce PCBs.

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