Printing plastic containers with digital images
View Patent ↗A method for printing digital images on plastic containers having curved surfaces, including providing a series of hollow plastic containers, moving the containers along a track past first and second digital printing locations, and printing first and second digital images on the curved container surfaces while maintaining the container being printed under internal pressure and while firmly holding the container being printed at spaced locations thereon.
1. A plastic container having curved surfaces with digital images thereon, which comprises:
a hollow plastic container having curved external surfaces, said container having a first multiple color, single-cured digital image on a first curved surface having a non-constant radius of curvature, and a second multiple color, single-cured digital image on a second curved surface having a non-constant radius of curvature, wherein said second curved surface is spaced from said first curved surface, and wherein said first and second curved surfaces are on opposed surfaces;
wherein said digital images are printed with a plurality of independently movable print heads.
2. A container according to claim 1 , wherein said container is oval.
3. A container according to claim 1 , wherein said container is one of an injection molded plastic container and a blow molded plastic container.
4. A container according to claim 3 , wherein said container is one of polyethylene terephthalate and high density polyethylene.
5. A container according to claim 1 , wherein said digital images are inkjet printed digital images.
6. A container according to claim 1 , wherein said digital images are printed on said container at different times.
7. A container according to claim 1 , wherein said digitally printed surfaces include UV-reactive ink.
8. A container according to claim 1 , wherein said digitally printed surface is the final coating.
9. A container according to claim 5 , wherein said container is pre-treated to raise the surface energy prior to digital printing.
10. A container according to claim 5 , wherein the inkjet printing is a drop on demand printing.
11. A container according to claim 5 , wherein the inkjet printed image is a UV reactive ink and is cured by UV light.
12. A container according to claim 1 , wherein said container is configured to hold an internal pressure of from 0.125 to 10.0 psi.
13. A container according to claim 1 , wherein each image is printed in one pass.