PRIMACOR 1321 Copolymer is an ethylene acrylic acid copolymer suitable for extruded blown and cast film applications. PRIMACOR 1321 Copolymer exhibits good interlayer adhesion, toughness and strength properties making it well-suited for multiple applications requiring excellent durability and stress resistance. As an adhesive layer in composite films or sealant layer in flexible packaging structures, PRIMACOR 1321 Copolymer provides good optical properties, interlayer adhesion to polyethylene and polyamide, excellent environmental stress crack and product resistance, and good hot-tack and sealability.