BIAXIALLY ORIENTED POLYESTER FILM HAVING ANTIMICROBIAL COATING

摘要

PROBLEM TO BE SOLVED: To provide a biaxially oriented polyester film having antimicrobial activity.SOLUTION: The polyester film comprises at least one base layer (B) comprising a polyester resin and at least one antimicrobial coating. The antimicrobial coating (a) comprises an ammonium silane expressed by formula (I) and (b) has a thickness of less than 1 μm, preferably less than 0.3 μm and more preferably less than 0.15 μm; and (c) the antimicrobial coating is applied by in-line coating in water solution or water dispersion comprising a combination of an ammonium silane and an acrylate.