Anti-powdering and anti-static polymer film for digital printing
AssigneeMitsubishi Polyester Film GmbH
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.
Claims18
A coated film having anti-static and/or anti-dusting properties comprising:
- a base film having a first side and a second side, the base film comprising a colored film containing a pigment in an amount from about 5% by weight to about 30% by weight;
- and
- a coating on at least the first side of the film, the coating comprising:
- an anti-static agent comprising an anionic copolyester;
- an adhesion promoter comprising an alkylene and acrylic acid copolymer present in the dried coating in an amount of from about 20% to about 55% by weight,
- a print enhancing agent comprising a vinyl ether present in the dried coating in an amount of from about 10% to about 35% by weight;
- and
- polymethylmethacrylate particles, wherein the polymethylmethacrylate particles are present in the coating in an amount from about 0.5% to about 3% by weight;
- and
- wherein the coated film is free of conductive materials other than the anionic copolyester.
A coated film having anti-static and/or anti-dusting properties comprising:
- a base film having a first side and a second side, the base film comprising a colored film containing a pigment in an amount from about 5% by weight to about 30% by weight;
- and
- a coating on at least the first side of the film, the coating comprising:
- an anti-static agent comprising an anionic copolyester;
- an adhesion promoter comprising an alkylene and acrylic acid copolymer present in the dried coating in an amount of from about 20% to about 55% by weight;
- a print enhancing agent comprising a vinyl ether present in the coating in an amount from about 10% to about 35% by weight;
- a crosslinking agent in an amount of about 1% to about 5% by weight;
- and
- polymethylmethacrylate particles, wherein the polymethylmethacrylate particles are present in the coating in an amount from about 0.5% to about 3% by weight;
- and
- wherein the coated film is free of conductive materials other than the anionic copolyester.
Dependencies are inferred from the claim text.