Polyethylene is one of the most widely used polymers in plenty of packaging applications, such as films, bottles, etc… However, in food packaging applications, which consists in 23% of the whole PE flexible film market, it is necessary to combine polyethylene with other materials to achieve the requirements of the product.

What makes polyamide so attractive in the film packaging industry is its long list of beneficial properties, noteworthy its toughness, high mechanical resistance, thermoformability, excellent puncture resistance, good oxygen barrier and chemical resistance to oils, greases, and aliphatic and aromatic hydrocarbons [A].

Polyamide 6 and the copolymer Polyamide 6/6.6 are the most common polyamide types used in flexible packaging, mainly in coextrusion and lamination. This study is focused on coextruded films, where there will be always present a tie layer, a PE-g-MAH providing cohesion between the LDPE layers and PA layers.

Recycling evaluation protocols have been presented by different initiatives and institutions. The protocols are not harmonized and there are important differences between them.

In this article, results according RecyClass, APR and COTREP recyclability evaluation protocols will be exposed.