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<p>Rigid-flexible PCB manufacturing process special steps</p><p><br></p><p><br></p><p>Many <a href="https://www.atechpcb.com/pcb-manufacturing" rel="noopener noreferrer" target="_blank">PCB manufacturers</a> fail to realize that <a href="https://www.atechpcb.com/pcb-manufacturing" rel="noopener noreferrer" target="_blank"><a href="https://www.atechpcb.com/pcb-manufacturing" target="_blank">rigid-flex PCB</a>s</a> are complex and require a lot of communication between them and consumers. Designers and rigid-flex PCB manufacturers must have early discussions.</p><p><br></p><p> </p><p><br></p><p>Early communication can ensure cost optimization and design for manufacturability. This article will explain all the necessary rigid-flex PCB manufacturing steps that you must accurately perform.</p><p><br></p><p> </p><p><br></p><p>We will explain that if you deal with any flexible parts, it will have a significant impact on the durability and efficiency of the PCB. Compared with standard rigid PCBs, the manufacturing process of rigid-flex PCBs is difficult and time-consuming.</p><p><br></p><p><br></p><p>Prepare and clean rigid-flex PCB substrate</p><p><br></p><p>You should start the manufacture of <a href="https://www.atechpcb.com/pcb-manufacturing" rel="noopener noreferrer" target="_blank">rigid-flex PCB</a> by cleaning/preparing the laminate for rigid-flex board. Laminates consist of a copper layer with an adhesive or adhesive coating. It should be carefully scrubbed before being used in the further rigid-flex PCB manufacturing process. This kind of pre-cleaning is crucial, because generally speaking, the copper coil is covered with an anti-rust layer for oxidation protection. However, this protective layer is an obstacle to rigid-flex PCB manufacturing, and we need to deal with it.</p><p><br></p><p><br></p><p>Now, if you want to know how to get rid of this layer, it's easy. Many PCB manufacturers naturally follow these three steps,</p><p><br></p><p> </p><p>1. First, you need to completely immerse the copper foil in an acid solution. If not, it can be sprayed with acid.</p><p><br></p><p><br></p><p>2. Next, you will treat the copper coil with a sodium persulfate solution to microetch it.</p><p><br></p><p><br></p><p>3. Finally, you need to coat the coil extensively with an appropriate kind of oxidant. This will help you prevent oxidation and adhesion.</p>
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