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US 9,561,676 B2Granted
Biaxially oriented bio-based polyester thin films and laminates for thermal transfer printing
AssigneeToray Plastics (America), Inc.
InventorsStefanos L. Sakellarides, Milan William Moscaritolo
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Abstract
A bio-based polyester thin film substrate for thermal transfer printing ribbon. The bio-based polyester thermal transfer ribbon substrate film has a radiocarbon content of at least 12 pMC. The film exhibits excellent uniformity, handling, and processability, substantially equivalent to petroleum-based counterparts, while being derived wholly or partly from non-petroleum sources.
Claims26
A film for thermal transfer printing comprising:
- a biaxially oriented base film comprising polyester, wherein the polyester in the base film comprises bio-based polyester and has a radiocarbon content of at least 12 pMC, wherein the film is a thermal transfer ribbon for carrying inks or dyes used in thermal transfer printing and the film has a thickness of 0.5-10 μm.
A film structure for thermal transfer printing comprising:
- a biaxially oriented base film comprising at least partially bio-based polyester, a first type of lubricant particles, and a second type of lubricant particles;
- an adhesive layer on a surface of the base film;
- a colored dye coating on the adhesive layer;
- and
- a low friction coating on a surface of the biaxally oriented base layer opposite the adhesive layer, wherein the film structure is a thermal transfer ribbon for carrying inks or dyes used in thermal transfer printing and the film structure has a thickness of 0.5-10 μm.
2 more elements
A method of making a film for thermal transfer printing comprising:
- extruding a base film comprising polyester, wherein the polyester in the base film is comprises bio-based polyester and has a radiocarbon content of at least 12 pMC;
- and
- biaxially orienting the base film, wherein the film is a thermal transfer ribbon for carrying inks or dyes used in thermal transfer printing and the film has a thickness of 0.5-10 μm.
Dependencies are inferred from the claim text.