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A novel method for high-volume manufacturing of self-protective plastic surfaces to ensure durable anti-counterfeiting functionality

Year: 2025

Type: article

Abstract: This study presents a novel approach to the high-volume manufacturing of durable self-protective polypropylene surfaces that integrate micro-scale protective grids with sub-micrometer Laser-Induced Periodic Surface Structures (LIPSS). Grids with variable pitches (40–250 μm) were designed to optimize surface durability and nanostructure functionality. Wear tests indicated that smaller grid pitches offered superior protection, significantly enhancing the functional lifespan of the structural color compared to unprotected surfaces. These findings underscore the success of optimized grid designs in delaying wear progression, providing a scalable and practical solution for durable nanostructured thermoplastic surfaces in industrial applications.

Source: CIRP Annals

DOI: 10.1016/j.cirp.2025.04.011

Authors: Marco Sorgato, Giacomo Baruffa, Keltoum Oubellaouch, Giulia Zaniboni, Giovanni Lucchetta

Institutions: University of Padua, University of Modena and Reggio Emilia

Language: English

Topic: Laser Material Processing Techniques

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,190

Funder: Università degli Studi di Padova