Anti-powdering and anti-static polymer film for digital printing
AssigneeMitsubishi Chemical America, Inc.
InventorsZhongzhe Yuan, Daniel Jacober
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Abstract
A coated polymer film, such as a coated polyester film, is disclosed. In one embodiment, the coated film may be used as a substrate for digital printing. In one embodiment, the coating contains an anionic anti-static agent comprising a sulphonated copolyester resin. In an alternative embodiment, the coating contains an anti-static agent comprising an organometallic, such as an organo zirconate, in combination with metal oxide particles. The metal oxide particles may comprise nanoparticles. In one embodiment, the coating can further contain a print enhancing agent and an adhesion promoter.
Claims21
A coated film having anti-static and/or anti-dusting properties comprising:
- a base film having a first side and a second side;
- and
- a coating on at least the first side of the film, the coating comprising:
- an anti-static agent comprising a copolyester;
- and
- a print enhancing agent comprising a vinyl ether, and
- an adhesion promoter comprising an alkylene and acrylic acid copolymer;
- and
- wherein the coating is free of polymeric antistatic agents other than the copolyester.
A coated film having anti-static properties comprising:
- a base film having a first side and a second side;
- and
- a coating on at least the first side of the film, the coating comprising:
- a first anti-static agent, the first anti-static agent being a zirconate or a mixture of zirconates, the first anti-static agent being present in the coating in an amount from about 10% to about 35% by weight;
- and
- metal oxide particles having an average particle size of less than about 50 nanometers, the metal oxide particles being present in the coating in an amount from about 20% to about 40% by weight;
- and
- wherein the coating is free of polymeric antistatic agents other than an optional copolyester.
Dependencies are inferred from the claim text.