Patent ID: 11866592
Assignee: PLASTIPAK PACKAGING, INC.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC C  B  Y | IPC B  C

Claim 0:
1. A method for removing cured ink from a plastic container, the method comprising:
(a) providing a plastic container having a curved external surface with a digital image printed directly on the curved external surface of the plastic container by a drop-on-demand ink jet printing process, the image comprising cured droplets of ink applied directly to the curved external surface of the plastic container and having an adhesion score of at least 6.0 and up through about 9.0, and the droplets of ink comprising a composition including an ink removal-promoting additive having a glass transition temperature less than about 130° C.;
(b) exposing at least a portion of the digitally printed image of the plastic container to a basic solution at an elevated temperature of at least about 70° C.; and
(c) removing at least a portion of the digitally printed image from the curved external surface on which the image was printed.