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Enhancing Laser Welding Accuracy with Epolin NIR Dyes



"Laser welding has revolutionized manufacturing processes, offering precision, speed and efficiency that traditional methods often struggle to match," said an Epolin spokesperson. "In this process, a focused laser beam melts and joins materials with pinpoint accuracy, making it ideal for industrial applications in automotive, medical device and consumer electronics among others."

Epolin provides products to support three critical aspects of laser welding operations: safety, machine and sensor vision, and enhanced laser welding.

Safety

Epolin dyes are regularly used in the production of laser safety eyewear and protective windows. These dyes absorb the harmful radiation generated by the laser to protect operators and bystanders. The dyes are available as an Epolight dye powder or a luminate ready to mold thermoplastic pellet, enabling users to meet ANSI and ISO laser and welding standards.

Machine and Sensor Vision

A critical aspect of automated laser welding systems is the ability for sensors to detect and monitor the welding process in real time. The sensors detect variables such as temperature, alignment and energy distribution to help ensure the process meets strict specifications.

This is where Epolin's advanced dye formulations play an essential role: optimizing sensor performance to ensure accurate and reliable welds. By filtering visible light and a portion of the infrared, one can eliminate environmental interference that would normally impede the sensor's vision.

Epolin's NIR dyes amplify the sensor responsiveness, providing a clear signal that allows the machine to adjust in real time. This dynamic feedback loop reduces the risk of errors, such as under- or over-penetration, which can compromise the strength and integrity of the weld. The overall system benefits from better accuracy, faster operation and improved efficiency.

Enhanced Laser Welding

Epolin dyes can also enhance the absorption properties of materials, allowing them to effectively absorb the laser's energy. These dyes are specifically designed to absorb light in the near-infrared spectrum where the laser operates, which causes tremendous heating at the laser site beyond what the standard beam is capable of. Using Epolin laser absorbing dyes in the material or as a coating on the weld site enables transparent plastics and traditionally hard to weld materials to be laser welded.

"With these materials and techniques, manufacturers can achieve strong laser welds with lower energy requirements or better focus the beam energy to create stronger, more consistent welds," said the spokesperson. "This benefit is particularly valuable for industries prioritizing sustainability and energy efficiency in their production lines."

For more information contact:

Epolin, LLC

358-364 Adams St.

Newark, NJ 07105

973-465-9495

epolin@epolin.com

www.epolin.com

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