Maiwald F, Kroth L, Laskin A, Hierl S, Schmidt M (2024)
Publication Type: Conference contribution
Publication year: 2024
Publisher: Elsevier B.V.
Book Volume: 124
Pages Range: 489-493
Conference Proceedings Title: Procedia CIRP
Event location: Furth, DEU
DOI: 10.1016/j.procir.2024.08.159
Absorber-free laser transmission welding enables precise and clean joining of polymer foils without absorbent additives or adhesives. It is well suited for applications in medical technology and food industry, which impose high demands on process reliability. To achieve a large process window and thus a reliable process, a homogeneous weld seam temperature is desirable. For this purpose, the intensity distribution of the laser beam is adapted locally by refractive beam shaping optics. Using a donut-shaped intensity distribution, the weld seam temperature is homogenized. Thus, the process window for welding polypropylene or polyethylene foils is enlarged up to a factor of 4 compared to a conventional, Gaussian-shaped distribution. This enables the reliable welding of even 85 μm thin foils, which could only be welded to a limited extent with a conventional laser intensity distribution.
APA:
Maiwald, F., Kroth, L., Laskin, A., Hierl, S., & Schmidt, M. (2024). Enlarging the process window in absorber-free laser transmission welding of polymer foils using tailored laser intensity distribution. In Michael Schmidt, C.B. Arnold, K. Wudy (Eds.), Procedia CIRP (pp. 489-493). Furth, DEU: Elsevier B.V..
MLA:
Maiwald, Frederik, et al. "Enlarging the process window in absorber-free laser transmission welding of polymer foils using tailored laser intensity distribution." Proceedings of the 13th CIRP Conference on Photonic Technologies, LANE 2024, Furth, DEU Ed. Michael Schmidt, C.B. Arnold, K. Wudy, Elsevier B.V., 2024. 489-493.
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