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Plastic laser welding applications
Publisher: suzhou kailinneng automation equipment co., LTD Release time：2023-03-23 15:06:24 Click on the number of times：56 Shut down
Plastic laser welding applications
Laser welding is a vibration-free welding technology, so it is particularly suitable for use in highly machined electronic components such as mice, mobile phones and connectors, as well as complex components that need to be fused in a cleaner manner, such as plastics containing circuit boards and medical equipment.
01 Automotive industry
In the automotive industry, laser welded plastics technology can be used to manufacture many automotive components, such as automatic door locks, keyless access devices, fuel nozzles, gear shifter racks, engine sensors, cab racks, hydraulic fuel tanks, filter racks, headlights and taillights. Other automotive applications include the manufacture of the intake pipe optical manifold and the manufacture of auxiliary pumps.
02 Medical Field
In the medical field, laser welding technology can be used in the manufacture of liquid storage tanks, liquid filtration equipment, hose connectors, ostomy bags, hearing AIDS, implants, microfluidic devices for analysis, etc.
The laser can also weld the plastic film together, moving along the edge of the film and bonding to form a sealing structure for packaging. The operation can be done very quickly.
03 New material activation laser welding applications
The results show that the transmittance of polymer to near infrared laser is at least 20-50%, and good welding effect can be obtained by laser welding technology. Most of the natural plastics and many colored translucent plastics, can meet the light transmittance requirements, in other words, laser welding can be applied to most of the plastics.
On the other hand, the absorption rate of the near infrared laser is also an important factor affecting the laser welding effect. Most thermoplastics can greatly improve the absorption rate of laser by adding the right amount of carbon black, but for some materials, the application of laser welding still has some limitations. For example, if two materials are transparent or white, the near-infrared laser can be transmitted through, resulting in very low absorption of the material to the near-infrared laser, in this case, laser welding can not be used. Another typical example is PPS and LCP plastics, which have very low transmittance to near infrared laser. If carbon black is filled with both materials, laser welding will not be possible because the laser cannot penetrate. In addition, many mineral filled compounds are not suitable for laser welding. In order to overcome these limitations of laser welding, some plastic manufacturers actively research and develop new materials that help to improve laser transmission and absorption, and have made gratiating progress, which brings broader application prospects for laser welding technology.