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Advanced Materials SolutionsAuthor: Envalior Subject Matter Experts
Whether you're commuting, multitasking, or prefer listening over reading, Envalior podcasts make it easy to access advanced material expertise anytime, anywhere. Episodes deliver practical insights on material engineering, application design optimization and/or part performance enhancement in a convenient, on-the-go format. Language: en Genres: Chemistry, Science, Technology Contact email: Get it Feed URL: Get it iTunes ID: Get it |
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Advances in Laser Welding for High-Performance Polymers
Episode 24
Wednesday, 29 July, 2026
Laser transmission welding (LTW) joins a near-infrared-transparent top part to an absorbing lower part, melting only the interface so internal electronics stay protected — a gentler method than ultrasonic welding. The difficulty is that high-performance, heavily filled PBT, PPS and high-temperature polyamides tend to absorb the beam and carbonize. The white paper describes material developments that restore transparency and widen the welding window: Pocan PBT grades (for example a 30% glass-fiber grade exceeding 25 MPa weld strength through 2 mm, plus hydrolysis-resistant and PBT/PC-blend variants), ForTii (a semi-aromatic polyamide, PPA) whose crystalline morphology keeps it transmissive even at 50% glass fiber, and Xytron PPS reaching about 20 MPa through 1 mm. It then introduces absorbing-to-absorbing (ATA) welding, which uses two lasers to heat each opaque part before joining, enabling complex 3D geometries, color-matched parts and heavily filled materials — demonstrated on impact-modified PPS with 40% glass fiber at over 50 MPa through 1.5 mm. For product teams, this removes long-standing trade-offs between weld strength, geometry and appearance, supporting reliable hermetic sealing in high-volume production; end-of-life disassembly of these sealed parts is noted as an open challenge. About this podcast — Made for engineers and product development teams, these easy-listening episodes explore practical engineering challenges and the material choices behind them — giving you insight you can put to work in your own designs.At Envalior, we help you reduce time, cost, risk and CO₂. The goal is simple: to help you select and process the right material more easily, and to deliver solutions with proven impact in the real world.More information: www.envalior.com
