| abstract |
This invention covers a film base wherein polymersnforming a polymeric film surface and selected fromnpolyesters, polyolefins and polyamides are coated withnan adhesion enhancing primer coating containing (a) anfunctionalized α-olefin containing copolymer; and (b)na crosslinking agent selected from the group consistingnof amino formaldehyde resins, polyvalent metal salts,nisocyanates, blocked isocyanates, epoxy resins andnpolyfunctional aziridines; and wherein the adhesionnenhancing primer coating is applied to the polymericnfilm surface and reacted, at elevated temperatures withnnewly generated polymeric film surfaces formed duringnuniaxial or biaxial stretching and heat setting. |