Nanoscale Surface Processing with Atmospheric Plasma Technique

摘要

Atmospheric plasma techniques as processing methods have a number of advantages which include their ability to tailor the surface chemistry at the nanometer level. As such, the plasma treatments are energy efficient, reproducible and environmentally clean. In-line, continuous reel-to-reel processing equipment has been developed in the last 5 years. The wide scale application of this nano-processing technology in the pre-treatment of packaging materials in reel-to-reel processing has however been severely limited. One of the main reasons for this is the relatively slow processing velocity for coating depositions. In general, the velocities need to be increased by 2-5 fold in order to folly exploit the new nano-processing techniques. This project will address these issues in order to assist in the transfer of atmospheric plasma processing technology from the laboratory scale to industrial level in the packaging industry. Special attention will go out to the very promising combination with sol-gel technology. A method and equipment for in-line plasma deposition of high-barrier bio-based coatings to be applied in conjunction with extrusion coating at industrial line speeds will be developed. The approach will exploit sol-gel coatings applied on the substrates by plasma deposition. The "substrates include paper, paperboard and plastic films. Renewable, bio-based and biodegradable materials will be used as extrusion coatings. The project aims at replacement of fluoropolymer based grease barrier materials with sol-gel coated bioplastics and substitution of non-renewable barrier packaging films with renewables based materials in general. Furthermore, life cycle analysis and risk assessment are used to address the safety and environmental aspects of the new developing technologies and materials in this project. To achieve these objectives, several leading European institutes and universities in atmospheric plasma deposition technology (VITO and TUE), sol-gel development (FhG-ISC and VTT), extrusion coating and analytics development (TUT and JSI) and life cycle and safety analysis (DTU) together with a range of industrial participants are incorporated in the project.