Method for making multi-layer print media by extrusion coating
AssigneeAvery Dennison Corporation
InventorsChia-Hsi Chu, Eugene Rozenbaoum, Frank Y. Shih, Stephen Li, Prakash Mallya
Life of this patent
Estimating the term…
Abstract
The current invention utilizes an extrusion coating method as a key step in a series of multilayer construction processes to make a laminate for graphic application. The extrusion coated layer performs as a strengthening layer to provide mechanical properties for the construction, while an ink receptive coating layer delivers high quality printability performance. High gloss can be achieved through the use of a PET carrier.
Claims20
A process for making a graphics film comprising the following steps in sequence:
- a. die coating and drying an ink receptive layer directly onto a polyester film;
- b. extrusion coating a polyolefin material onto the ink receptive layer at an extrusion temperature of from about 600° F. to 650° F.;
- and
- c. removing the polyester film from the ink receptive layer to expose a surface of the ink receptive layer;
- wherein the ink receptive layer is selected from a vinyl acetate homopolymer or copolymer or a mixture thereof, an acrylic copolymer or a mixture of an acrylic copolymer with a vinyl acetate/ethylene copolymer, a vinyl acetate/ethylene copolymer and an acrylic hybrid, or a polyurethane containing polymer;
- and
- wherein the graphics film is halogen-free.
A process for making a graphics film comprising the following steps in sequence:
- a. coating and drying an ink receptive layer directly onto a polyester film;
- b. extrusion coating a molten polyolefin material onto the ink receptive layer;
- and
- c. removing the polyester film from the ink receptive layer to expose a surface of the ink receptive layer,
- wherein the ink receptive layer comprises at least one component selected from the group consisting of:
- a vinyl acetate homopolymer or copolymer or a mixture thereof, an acrylic copolymer or a mixture of an acrylic copolymer with a vinyl acetate/ethylene copolymer, a vinyl acetate/ethylene copolymer and an acrylic hybrid, and a polyurethane-containing polymer;
- and
- wherein the graphics film is halogen free.
A process for making a graphics film comprising the following steps in sequence:
- a. die coating and drying an ink receptive layer directly onto a polyester film;
- b. extrusion coating a polyolefin material onto the ink receptive layer;
- and
- c. removing the polyester film from the ink receptive layer to expose a surface of the ink receptive layer;
- wherein the ink receptive layer consists essentially of:
- a polymer selected from the group consisting of a vinyl acetate homopolymer, avinyl acetate copolymer, a mixture of a vinyl acetate homopolymer and a vinyl acetate copolymer, an acrylic copolymer, a mixture of an acrylic copolymer with a vinyl acetate/ethylene copolymer, a vinyl acetate/ethylene copolymer and an acrylic hybrid, and a polyurethane containing polymer;
- and
- optionally TiO2;
- and
- wherein the graphics film is halogen-free.
Dependencies are inferred from the claim text.