Laser welding of nylon (PA6) is a new trend in creating new connection processes

Plastic welding is one of the most effective methods to achieve permanent connection of plastic parts, among which laser plastic welding is an emerging technology that has gradually replaced traditional welding methods in recent years. Compared with traditional welding methods, laser welding has higher precision, faster speed, better reliability and smaller heat-affected zone.

Laser welding is a process that uses the heat generated by the laser beam to melt the plastic contact surface, thereby bonding thermoplastic sheets, films or molded parts together. In order to perform laser welding, it is necessary to select the appropriate laser wavelength and power, and adjust the appropriate parameters such as shielding gas and lens focal length. In addition, factors such as the absorptivity and transmittance of the plastic to be welded, and whether the material contains absorbents and reflectors, etc., must also be considered.

During the laser welding process, when the wavelength is in the range of 900nm-1100nm, the plastic has a very strong ability to transmit laser light, reaching 85%-95%. When the wavelength is 2000nm-2100nm, the transparency of transparent materials such as PMMA and PC is only 5%-20%, and the corresponding absorption rate of laser light will be as high as more than 80%. For filled polymer materials, as the glass fiber content increases, the material's perspective ability gradually weakens.

For modified laser welding nylon, it is usually necessary to make special modifications to the nylon material to increase the laser transmittance to 20%-50% in order to achieve good laser welding performance. In the glass fiber reinforced nylon system, flat glass fiber has a better effect on improving laser transmittance than round glass fiber, but the physical properties of flat glass fiber reinforced nylon are slightly weaker than those of round glass fiber reinforced nylon. The material composed of nylon 66 and nylon 6 can significantly improve the laser transmittance, but the strength and heat resistance will be reduced. Modified nylon is a nylon material that has been specially modified. Its physical properties have been greatly improved and it has many unique advantages. Therefore, it has been widely used in plastic laser processing.

Modified nylon has excellent laser transmittance, and laser transmittance can be improved through special modification to better meet the needs of plastic laser processing. Secondly, modified nylon has good melt fluidity and is easy to process and shape. It can be processed by various methods such as injection molding, extrusion, blow molding, etc., and is suitable for different processing techniques. In addition, modified nylon also has excellent mechanical properties and high temperature resistance, which can meet the requirements of various fields for material properties.

In plastic laser processing, modified nylon is widely used in the manufacture of laser welding and cutting parts. Because modified nylon has good laser transmittance and melt fluidity, it can be cut and welded in a fast and precise manner without causing obvious thermal deformation or thermal damage. In addition, modified nylon also has excellent corrosion resistance and wear resistance, which can effectively protect the surface of laser processed parts, thereby extending their service life.

In general, the application of modified nylon in plastic laser processing has the following advantages:

• Materials with good laser transmittance and molten fluidity can achieve efficient and accurate cutting and welding operations.

• It has high mechanical properties and heat resistance, and can meet the requirements of material properties in different fields.

• It has good corrosion resistance and wear resistance, which can effectively protect the surface of laser processed parts and extend their service life.

• Currently, plastic laser welding is widely used in industries such as automobiles, medical care, and electronic appliances.

Laser modified nylon is a material suitable for the manufacture of automotive parts, such as intake manifolds, water pumps, oil pumps, brakes, and engine covers. It has the advantages of high strength, wear resistance, corrosion resistance, and high temperature resistance, which can improve the performance and life of automotive parts.

Laser modified nylon is a material suitable for manufacturing electronic and electrical accessories, such as mobile phone exteriors, computer casings, and TV casings. It has many advantages, such as high strength, impact resistance, non-slip, wear resistance, and high temperature resistance. The use of laser modified nylon can improve the quality and performance of electronic and electrical accessories.

Laser modified nylon is a material suitable for the manufacture of medical devices, such as artificial joints, prostheses, dental materials, etc. Laser modified nylon has the advantages of high strength, wear resistance, and good biocompatibility, which can improve the performance and safety of medical devices.

Sports equipment: Laser modified nylon can be used to manufacture sports equipment such as golf clubs, tennis rackets, and skis. Laser modified nylon has the advantages of high strength, impact resistance, non-slip, wear resistance, and high temperature resistance, which can improve the performance and durability of sports equipment.