Can all plastics be welded with a laser?

In order to obtain a good welding effect, the energy of the visible laser beam must be absorbed by the plastic, so not all plastics can be welded with a laser welder. Plastics can be divided into two categories: thermosetting and thermoplastic. In this case, thermosetting plastics are not re-moldable and cannot be welded, while thermoplastics melt again when heated again (heating and cooling can be used to make them reversible), which is a physical change and therefore weldable.

With the development of laser welding technology, the application of lasers is becoming more and more extensive, and its role in the processing field is becoming more and more important. Its excellent performance advantages have become the preferred processing method for many plastic production companies. Laser welding uses the heat generated by laser to melt the contact surface on the plastic surface, thereby bonding the plastic materials together.

Advantages of using laser welding for plastic products:

Compared with traditional welding, laser welding has the characteristics of strong strength, sealing, no air leakage, no water leakage, less resin degradation during welding, less debris generated, and tightly bonded plastic products. Computer control can be used to precisely weld and process items. The operation is flexible and easy to control. For workpieces of complex size or appearance structure, all parts can be finely welded. At the same time, laser welding can greatly reduce the vibration and thermal stress of plastic products, thereby slowing down the aging of plastic products.

Due to the increasingly high technological requirements for plastic products in various industries today, traditional processes can no longer meet the needs of modern processing. For plastic products that require high-speed welding, precision welding or aseptic welding, laser welding is more advantageous. Nowadays, plastic products are of various types and colors. Laser welding improves the welding firmness by adding various ingredients to the welding parts during the welding process. Compared with traditional welding methods, laser plastic welding machines have greater advantages in modern processing and production.