Design the perfect plastic laser welding solution for your assembly

Laser Plastic Welding Process

Laser plastic welding uses a precise infrared laser beam that passes through a transmissive material and is absorbed by an absorptive material. The two materials are brought into close contact with one another, and as the laser energy is absorbed, the joint between them heats up and melts. The result is a clean weld with minimal flash.

(1)                                                 (2)<                                             (3)

(1)Clamp:The two parts are sandwiched together with IR transparent material on the top and absorbing material on the bottom.

(2) Melting by Heat:The laser is transmitted through the top component and absorbed by the lower component, thereby heating and melting the joint.

(3) Natural cooling:Turn off the laser and maintain the clamping force to allow the joint to cool and solidify.

Years of R&D experience in plastic laser welding

Laser's laser plastic welding solutions use infrared energy to melt and weld plastics. Infrared energy is a specific wavelength, not a range. And there are a number of wavelengths used, from 600 to 2000 nm. Most of the time, the 980 nm wavelength is the best choice. We can also control the beam size, speed, power, and number of passes to optimize it for the application.

Advantages of Laser Welding

Clean: Laser welding can minimize or eliminate unwanted particulates and visually unacceptable flash by applying precisely the right amount of energy to the weld surface. Excessive heat is not required to produce strong, clean and repeatable welds.

Fast: The extremely concentrated energy means that the plastic heats very quickly. This translates into fast weld times.

Precise: Micro-part designs and closer internal components are possible with the control and accuracy of the LASER laser plastic welding system. Energy goes exactly where it is needed on each part.

Laser welding technology

Contour welding

Contour laser welding uses a single continuous pass of the laser along the weld path with enough energy to melt and weld the parts. This is suitable for flat-to-flat weld joints.

Synchronous Welding

Synchronous WeldingLaser welding uses many very fast passes along the weld path to simulate laser energy being applied to the entire weld joint at the same time. This works well in T-weld joints to achieve consistent, synchronized displacements in the weld joint.

Wire beam laser welding uses optics to spread the laser energy into a curtain that moves across the part like a broad paintbrush. This is suitable for both small intricate parts and larger flat area welding.

masking

Masking uses a similar wire beam curtain laser, but uses a precisely cut mask on the part to shield areas where laser energy is not needed. This is suitable for ultra-precision welding with weld widths less than 0.7 mm.