Copper Clad Laminate (CCL) is a plate-like material made by impregnating an electronic fiberglass cloth or other reinforcing material with resin, coated with copper foil on one or both sides and hot pressed. CCL. Printed circuit boards of various forms and functions are selectively processed, etched, drilled, and plated on a copper clad plate to produce different printed circuits.
The printed circuit board mainly plays the role of interconnection conduction, insulation and support, which has a great influence on the transmission speed, energy loss and characteristic impedance of the signal in the circuit. Therefore, the performance, quality and manufacture of the printed circuit board The processability, manufacturing level, manufacturing cost, and long-term reliability and stability are largely determined by the copper clad laminate.