First of all, we need to know what the production principle of pcb circuit board is: printing pcb circuit board, the drawn pcb circuit board will be printed out with transfer paper. In this link, we need to pay attention to the slippery surface of the pcb circuit board, and we must face ourselves. Usually, when printing two pcb circuit boards, two pcb circuit boards can be printed on one transfer paper. The quality of the pcb circuit board with the selected printing effect shall prevail.

　　Cut the copper clad laminate and use the photosensitive plate to make the full process drawing of the pcb circuit board. The copper clad laminate, that is, the copper clad film on both sides of the pcb circuit board, the relevant operators of smt technology need to cut the copper clad laminate to the same size as the pcb circuit board, and be careful not to be too large, so as to prevent unnecessary losses and effectively save materials.

　　After transferring the PCB circuit board, the relevant operators of smt technology will cut the printed PCB circuit board into appropriate size, and then continue to paste the printed surface of the PCB circuit board in strict accordance with the implementation of the standard operating instructions. On the copper clad laminate, align all the copper clad laminates and put them into the thermal transfer machine.

　　When it is placed here, it must be ensured that the transfer paper is not misplaced before it can be operated. Generally speaking, after 2-3 transfers, the PCB circuit board can be very firmly transferred on the CCL. The heat transfer machine has been preheated in advance, and the temperature is set at 160-200 degrees Celsius. Due to the high temperature, the operator must pay attention to safety during operation.

　　There is another step in the pcb production process for pcb board manufacturers, which is to corrode the pcb circuit board and use the smt process workshop to equip the reflow soldering machine.

　　The smt technician must first check whether the transfer of the pcb board is completed. If there is little or no good transfer place, it can be repaired with a black oil-based pen, and then the pcb board can be corroded. After the pcb, when the exposed copper film on the board is completely corroded, take the pcb circuit board out of the corrosive solution and clean it immediately. In this way, a complete PCB circuit board is corroded in several steps.