Roller welding is based on the GLOBO welding principle. However, instead of relying on air bearings, the glass roller is mounted on ball bearings, either on one side or on two. It serves as both a pressure tool and as a final optical element. Roller welding differs from GLOBO welding in that a linear laser beam is focused behind the glass roller. With this welding concept, high welding seam strengths can be achieved. However, the potential applications are restricted to those of a linear nature. 

Characteristics and applications 

• Linear joining geometry in two dimensions
• Welding without a clamping device
• Optimum synchronization of contact pressure and energy input
• Suitable for robotic applications