The effect is awesome! Application of RFH Industrial Nanosecond Solid State Laser in Copper Foil Cutting

Metal foil is a thin metal sheet extended from metal, and various types of ultra-thin metal foil have different and important applications in various industries. For example, steel and alloy foils are mainly used in electronics and aerospace, titanium alloy foils can be used to make decorative nets on jet engine combustion tubes, tungsten and molybdenum foils are used for electronic tubes and heating elements, and iron-nickel soft magnetic alloy foils are used to make Iron cores for miniature high-frequency pulse transformers, magnetic recorders, etc., and copper foils mentioned below can be used for copper-clad laminates and the like.

Copper clad laminate (CCL) is a kind of plate-like material formed by impregnating electronic glass fiber cloth or other reinforcing materials with resin, covering one or both sides with copper foil and hot pressing, referred to as copper clad laminate. Printed circuit boards with different forms and functions are made of various types of printed circuits by etching, drilling and other processes on the copper clad laminate.

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Copper foil plays the role of interconnection and support in the printed circuit board, which has a direct relationship with the performance and quality of the printed circuit board. Its importance is self-evident, and the cost and difficulty of manufacturing copper foil are relatively high. Therefore, high precision is required when cutting copper foil, so as to improve the utilization rate of copper foil and reduce production costs for manufacturers.

Compared with laser cutting, the traditional die cutting process is slightly inferior in terms of efficiency, processing speed, cutting loss, and cutting accuracy. At present, ultraviolet lasers are widely used in the industry to cut copper foil. The 355nm ultraviolet laser brought by the industrial-grade nanosecond solid-state laser developed by Nanofei Optoelectronics has high beam quality and high power. After integrating optical devices, moving parts, and visual control software, it is especially suitable for cutting copper foil.

Its beam quality is high (M2<1.2), the focusing focus obtained after adding the supporting optical equipment is very small, the diameter of the spot is micron, and the power density is not high. Set the focus position, size, focal depth and other parameters, you can Make high-quality cuts with small cutting gaps and high precision. Moreover, the ultraviolet laser has a short wavelength, wide applicability of materials, and high absorption rate. The cutting process is "cold working". With a very small pulse width (<25ns), it will cause non-heat treatment damage to the material, which will affect the inner layer of the machined surface and the surrounding area. The area is not affected by heating or thermal deformation, the heat-affected zone is small, and there is no carbonization or burr on the edge when cutting copper foil, and the effect is very good. UV processing has basically become synonymous with precision cold processing. At the same time, the efficiency of laser processing is also very high, which can bring real benefits to manufacturers in a good and fast manner.

With the rapid development of the communication industry, an unprecedented large market has been brought to copper clad laminates, and the demand for copper foil applications as the basic material of copper clad laminates will continue to increase. RFH's industrial-grade nanosecond solid-state laser can achieve high-precision, high-density cutting and micro-hole processing. This advantage caters to the current development pace of copper-clad laminates and is an ideal processing tool for copper foil cutting.