Laser surface melting for enhanced moisture barrier in sustainable packaging

Overview

Laser Surface Melting (LSM) is a cutting-edge technology designed to enhance the moisture barrier properties of sustainable packaging materials. By modifying the surface morphology, LSM reduces porosity and increases hydrophobicity, effectively lowering water vapor transmission rates (WVTR). This method maintains the compostability and recyclability of fiber-based, bio-based, and recyclable polyolefin films while significantly improving their moisture resistance and long-term durability. It offers a viable, eco-friendly alternative to traditional synthetic coatings, supporting advancements in sustainable packaging solutions.

Technical specifications

Key features:

• Surface Modification: LSM modifies the surface of materials by sealing microvoids and densifying the structure, leading to a smoother and less porous surface.
• Material Compatibility: Works with bio-based films like PLA, PBAT, and PBS, as well as polyolefins like PE and PP, and fiber-based substrates.
• Environmental Benefits: Enhances hydrophobicity without introducing foreign materials, ensuring compatibility with existing recycling streams.
• Scalability: Roll-to-roll (R2R) processing is being evaluated for industrial feasibility, aimed at providing a cost-effective, scalable solution.

Technology readiness level

Currently, this technology is at Technology Readiness Level 4, indicating that the basic principles have been validated in a laboratory setting. Future validation plans include optimizing LSM parameters for improved performance, regulatory testing for food contact safety, compostability, and recyclability, and conducting a cost-benefit analysis compared to traditional coatings.