What is copper clad laminate?
Copper-clad laminate is a plate-shaped material made by impregnating electronic fiberglass cloth or other reinforcing materials with resin, covering one or both sides with copper foil and hot pressing. It is called copper-clad laminate. Clad Laminate (CCL), referred to as copper clad laminate.
As a substrate material in the manufacturing of printed circuit boards, copper clad laminates mainly play the role of interconnection, insulation and support for printed circuit boards, and have a great impact on the transmission speed, energy loss and characteristic impedance of signals in the circuit. , Therefore, the performance, quality, processability in manufacturing, manufacturing level, manufacturing cost, and long-term reliability and stability of printed circuit boards largely depend on the copper clad laminate.
Generally speaking, copper clad laminates can be divided into two categories: rigid copper clad laminates and flexible copper clad laminates.
1.2.1 Rigid copper clad laminate
1.2.1.1 According to the different insulating materials and structures of copper-clad laminates, they can be divided into organic resin copper-clad laminates, metal-based (core) copper-clad laminates and ceramic-based copper clad laminates.
1.2.1.2 According to the thickness of the copper-clad laminate, it can be divided into conventional boards and thin boards.
1.2.1.3 According to the reinforcing materials used in copper clad laminates, they can be divided into electronic fiberglass cloth-based copper clad laminates, paper-based copper clad laminates and composite-based copper clad laminates.
1.2.1.4 According to the insulating resin used in copper-clad laminates, a certain resin is called a certain resin copper-clad laminate. Such as epoxy resin copper clad laminate, polyester resin copper clad laminate, cyanate resin copper clad laminate, etc.
In addition, there are special rigid copper-clad laminates classified according to flame retardant levels and certain special properties.
1.2.2 Flexible copper clad laminate
At present, flexible copper-clad laminates are divided into polyester film type (flame retardant and non-flame retardant), polyimide film type (flame retardant, non-flame retardant, two-layer method and three-layer method) and ultra-thin electronic glass fiber cloth Three types.
