Reliable adhesion between glass to polymeric formulations, such as printing ink or resin for microreplication, has been traditionally achieved by using adhesion promoters such as silanes. Often, the silane is mixed with the polymeric formulation rather than on the glass surface due to the ease of processing. However, when the adhesion promoting molecules are mixed with the ink or resin, a larger amount is needed to make sure enough of them can migrate to the glass-polymer interface in due time to provide reliability of adhesion. This increased amount can often cause other challenges in the performance of the polymeric formulation, especially when stringent optical requirements are to be met. This is because excess silanes can cause yellowing of the formulation over time. In this talk, we will discuss a few cases where both adhesion and optical performance of printed features on glass are critical since the printed substrate serve as an important optical component of a display, namely light guide plate (LGP). The long-term adhesion reliability of these printed substrates is predicted by its wet adhesion properties where the wet adhesion is measured after weathering in water vapor, 90%RH/60°C/10days environment. Along with that, the adhesion promoting solution needed to be optically invisible such that it does not interfere with the light-guiding performance of the final product. In this talk, we will discuss ways to achieve good dry and wet adhesion reliability for such systems while having minimal impact to other requirements of the LGP. We will also discuss low-cost, high-throughput scale-up processes to enable uniform surface treatment of glass with such adhesion promoters in a manufacturing platform such that stringent uniformity requirements can be met.

Interface architecture for reliable adhesion between glass and polymer

ACS Fall 2021

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.