Three major application areas of plastic laser welding

The principle of plastic laser welding is simply a welding method that uses a laser beam as a heat source, that is, the surface of the workpiece is heated by laser radiation, so that the surface of the object diffuses to the inside through heat conduction, thereby melting the workpiece and forming a specific molten pool. The lower layer of material absorbs the laser beam through the upper layer of transparent material. After the laser energy is absorbed, the two layers of material are pressed together and converted into heat energy. The heat energy is transferred from the absorption layer to the transparent layer, causing the two layers of material to melt and combine.

In order to achieve a better welding effect, the energy of the laser beam must be absorbed, and CO2 lasers are generally used for plastic laser welding. In addition, not all plastics can be welded with lasers. Plastics can be divided into thermosetting and thermoplastic. Among them, thermosetting plastics have no repeated molding and cannot be welded. Thermosetting plastics melt after heating (reversible changes when heated and cooled), which is the so-called physical change, and have weldability.

Compared with other welding methods, laser welding has the characteristics of fast speed, good effect, small mechanical stress and thermal stress, and is particularly suitable for precision electronic components such as mouse, mobile phones, connectors, and complex parts that require more cleaning and melting, such as plastic products with circuit boards. The automotive, medical, consumer electronics, food and other industries are ideal application areas for laser welding. So, what are the three major application areas of plastic laser welding?

1. Automobile Industry

Plastic laser welding machines are widely used in the automotive industry such as automatic door locks, engine sensors, cab racks, fuel nozzles, shift racks, etc. The taillights of some models are also laser welded.

2. Medical field

Plastic laser welding machines can be used to manufacture liquid storage tanks, liquid filters, hose connectors, bags, hearing aids, implants, microfluidic analysis devices, etc.

III. Packaging Industry

For example, advanced industrial finished product packaging uses plastic film welding technology, which can be processed at high speed, with reliable seams and beautiful appearance of plastic packaging. Laser welding connection of plastic outer packaging materials. Plastic materials are thermoplastics and artificial rubber.

Laser welding of plastics has the comprehensive advantages of low cost, no pollution, fast speed, convenient processing, convenient precision CNC, wide application of raw materials, good applicability and good processability. With the research of plastic welding technology and the gradual commercialization of plastic laser welding equipment, the application of plastic laser welding will become more and more extensive, and the technology will become more and more mature. In order to meet the growing demand for transparent plastic products in the industrial, medical, scientific research and other markets.