Many applications of laser plastic welding technology in the medical field

Laser plastic weldingThe technology has many applications in the medical field, such as connecting the housing of electronic components such as insulin devices or pacemakers, accurately and reliably welding medical catheters or pins by laser, diagnostic test boxes and micro-flow control.

In laser transmission welding, the weld strength is almost the same as the raw material, no debris or dust is generated, and no chemicals need to be introduced. Therefore, it is a clean and environmentally friendly laser processing process. The width of the weld can reach hundreds of microns. The weld is well sealed and there are no tiny particles around. Especially when pursuing beautiful welds, laser welding is the most ideal process choice.

Clamp the two thermoplastic materials, light-transmitting and light-absorbing, together, clamp the light-transmitting material at the top and the light-absorbing material at the bottom, and apply a certain clamping pressure. The laser beam penetrates the upper light-transmitting workpiece and reaches the surface of the lower light-absorbing material. The laser can convert it into thermal energy and melt its surface. At the same time, the heat is also transferred from the bottom to the contact surface of the upper light-transmitting workpiece crimped with it through conduction, so that it melts, thereby realizing laser hot melt welding. The welding effect after cooling is that the welding strength is the same as the material itself.

In the laser plastic welding process, one component must be laser light-transmitting plastic and the other component must be laser light-absorbing plastic, so many possibilities can be combined.

This technology is used in many medical fields, such as connecting the housing of electronic components such as insulin devices or pacemakers, accurately and reliably welding medical catheters or pins by laser, as well as diagnostic test boxes and micro-flow control. The individual parts of the plastic valve must be resistant to high pressure, and laser welding can also be done well, and the performance of the parts is very stable. Any geometric design is easy to handle.

In addition to the above-mentioned transparent and absorption connection processes, transparent connection technology can also connect two transparent parts. Especially in some certified products where additives are not allowed, or in scenarios where evaluation and analysis are performed under optical conditions, this process is more convenient.

Laser plastic welding equipment can be used as a stand-alone solution or integrated into a production line. The systematic traceability and reproducible processing ensures that specific purity requirements and process validation are met. This also meets the high demands on processing technology and quality reliability in the medical field.

Depending on the application, different welding methods can be selected, such as radial welding, contour welding or quasi-simultaneous welding. For very special projects, LASELASER combines laser, beam guidance and control systems with many years of application experience, making even very complex joining tasks possible - and it can also be automated if required.