Abstract
Ethylene-Methyl Acrylate (E-MA) copolymers have been used for many years to improve the interlayer adhesion of tie layers in multilayered flexible packag ing. A key property of E-MAs in this application is their excellent adhesion to many different types of polymer substrates. The E-MA blends with low density polyethyl ene (LDPE) commonly used in industry today sometimes exhibit marginal bond strengths and can also cause processing difficulties.
The first of a new series of E-MA resins has performed significantly better than the equivalent E-MA/LDPE blend in initial extrusion coating and laminating pilot tests. Nearly a 50% improvement in adhesion to OPP film was obtained and similar results were observed for other substrates. The new E-MA resin also demonstrated good extrusion coating processing making it an attractive option for the flexible packaging manufacturer.
Keywords
Get full access to this article
View all access options for this article.