Application of plastic laser welder in sealing welding process of plastic fluid components

Fluid component welding A fluid component is a sensitive component such as a fluid-carrying component. Plastic laser welding machineThe application in the process of sealing welding of plastic fluid components can be welded together accurately, permanently, firmly and most importantly without pollution.

The application areas of plastic laser welding machines are diverse, whether it is gas or liquid, the main thing is that the weld is tight and meets the requirements. The laser welding process is based on the design and production requirements of the component. Laser welding is particularly suitable for the requirements of microfluidics. Here, the area between the fluid channels must be sealed without contaminating the channels themselves. Complex structures with long weld seams and different dimensions can be ideally welded with mask welding - a mix of contour welding and quasi-simultaneous welding. The welding time with this technology can be reduced many times compared to contour welding. Laser welding saves production steps, material and storage costs.

Fluidic components with less complex structures are often welded with other laser welding processes such as contour welding or quasi-simultaneous welding. Especially when the process requires process control. At the same time, quasi-simultaneous welding is used less frequently, but it is reasonable to produce simple welding geometries in series production.

Gas Analysis Systems

Gas analysis systems are used in various applications to determine elements and their concentrations. The gas is fed into a box and divided into several channels for analysis. The channels must be sealed. Contamination-free laser welding is an ideal and fast welding process that has proven itself in practice. Welds several meters long can be produced in a matter of seconds.

Dosage

Laser welding of plastics is a very clean and reliable joining method.

The thermal and mechanical loads on the parts are low compared to other welding processes, making it ideal for the medical industry. Infusion pumps are just one of many examples in this category. It is important that drug transport channels are sealed without contaminating them.

Fluid Systems in the Automotive Industry

In the automotive industry, laser welding of plastics has established itself due to the high reliability of continuous welds. A good example is the Liquid Vapor Separator (LVS).

The LVS is installed between the gas tank system and the activated carbon filter and separates the liquid fuel from the vapor. For the sake of the environment, the fuel is returned to the tank and the gases are filtered and released into the environment.

Blood Analysis in Medical Technology

Fluid components are also used in blood analysis to separate the blood into different channels and reservoirs. The fluid-carrying areas must be confined, separated and sealed from each other. The areas between the channels and reservoirs must therefore be connected tightly and evenly.

In the case of the filter element shown, an absorbent is applied to the component surface before welding. This can be used alone, with only the local laser power converted into heat. This means that two transparent components can also be welded with the laser.