355 nm Ultraviolet Laser for wire insulation laser stripping

Laser wire stripping is an important application of 355 nm Ultraviolet Laser in material processing. It strips the outer insulation of wires, cables and other wires through high-energy density beam irradiation. It is a repeatable non-contact processing with high efficiency. , The peeling effect is good, and it is widely used in high-end processing fields such as aerospace, medical, and 3C electronics.

The traditional wire outer layer insulation stripping is generally realized by wire stripping pliers or blades. The overall efficiency of this kind of process is low, and the mechanical processing method is easy to cause damage to the internal core due to cutting and pulling, especially for special diameters. It is even less suitable for thin wires, such as the insulation layer stripping of related products such as cardiac rhythm management and radiofrequency ablation in the medical field. The wire diameter is small, and it is difficult to remove by traditional methods. If the wire is chemically stripped, it is also easy to cause damage to the wire. In addition, the wires used in some special fields also have one or more metal shielding layers and non-metallic protective layers in the insulation sheath and core, and it is more difficult to do mechanical stripping in one step.

The 355 nm Ultraviolet Laser is very suitable for the fast removal of this material. It can achieve no ablation, high stripping consistency, even very thin wire cores will not be broken, and can ensure the appearance and quality of the wire inside, This is closely related to the characteristics of 355nm ultraviolet light.

"Cold" processing due to high single-photon energy. Since the outer insulating layers of the wires are mostly made of plastics such as polyvinyl chloride and polyethylene, the high single-photon energy of 355nm can easily break the molecular bonds of these materials and make them detached from the material itself. This process generates almost no heat, so It is called "cold" processing; the multi-layer material between the insulating skin and the wire core also has a high absorption rate of 355nm ultraviolet light, so a laser can achieve one-step multi-layer material peeling.

The pulse width of the 355 nm Ultraviolet Laser is only about 25ns. The advantage of the very narrow pulse width is that the laser heat will stop accumulating in the active area before it has time. The degree of thermal influence is low, and the damage to the wire core is minimized.

The efficiency of laser processing is unquestionable, and the high flexibility is unmatched by traditional wire stripping processes. By integrating into the production line and cooperating with automatic or semi-automatic process design, precise and flexible laser wire stripping can be performed.