Tag Archives: film & flexible packaging
It’s Opening Day in Cincinnati, Ohio! Now this isn’t just any season opener, Opening Day in Cincinnati is an unofficial city holiday. Downtown is painted red as people gather for the 98th Opening Day Parade and celebrations around town. Offices slow down and desks are empty in schools. Today, Cincinnatians are gearing up for the hometown Reds’ game against the Phillies. We don our red, grab our game day snacks, and pray for fair weather.
Buy me some peanuts and cracker jacks
Food packaging and print industries often face the obstacle of adhering to low energy substrates such as polypropylene. Measuring the surface’s cleanliness prior to bonding or printing is the key to successful adhesion. The common method for measuring surface cleanliness, or surface energy on these materials is dyne inks. However, dyne is highly subjective and requires a skilled technician, and because of its destructive nature, dyne can only be used on a sample rather than an actual material on the assembly line. These downfalls often restrict the use of dyne inks.
This paper examines the relationship between surface energy and adhesion and how water contact angle provides an accurate and quantitative method for predicting adhesion. The results of this paper reveal that the Surface Analyst, a handheld water contact angle measurement instrument is an accurate and effective indicator of surface energy. …Read More