Method and media for printing aqueous ink jet inks on plastic surfaces
First Claim
1. A method of producing ink jet printed images with high resistance to physical and chemical damage on plastic surfaces, comprising the steps of:
- a. providing a plastic object;
b. coating at least part of the surface of the plastic object with an under-coating solution;
c. evaporating off the volatile part of the under-coated solution, thus depositing a solid film on the surface of the plastic object;
d. providing at least one ink-jet ink comprising a colorant and aqueous carrier;
e. jetting the ink by means of an ink-jet system onto the surface of the under-coating on the plastic object;
f. warming the printed surface to drive part of the water in the ink into the under-coating and to evaporate the remaining part of the water;
g. over-coating the dried surface with a water-based coating; and
h. heating the over-coating to dry or cure it and to seal-in the previously deposited ink and under-coating.
1 Assignment
0 Petitions
Accused Products
Abstract
Single coatings onto non-absorbent substrates on which aqueous ink jet inks are jetted with subsequent application of heat, without the use of reactive species in the ink and in the media used as a substrate coating. The heating rapidly drives the water of the ink into the coating, with the rest of the water from the ink being lost by evaporation. The material is then subject to immediate application of a sealing lacquer, which is preferably water-based and which may be dried and possibly cross-linked by heat to give a very resistant surface.
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Citations
30 Claims
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1. A method of producing ink jet printed images with high resistance to physical and chemical damage on plastic surfaces, comprising the steps of:
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a. providing a plastic object;
b. coating at least part of the surface of the plastic object with an under-coating solution;
c. evaporating off the volatile part of the under-coated solution, thus depositing a solid film on the surface of the plastic object;
d. providing at least one ink-jet ink comprising a colorant and aqueous carrier;
e. jetting the ink by means of an ink-jet system onto the surface of the under-coating on the plastic object;
f. warming the printed surface to drive part of the water in the ink into the under-coating and to evaporate the remaining part of the water;
g. over-coating the dried surface with a water-based coating; and
h. heating the over-coating to dry or cure it and to seal-in the previously deposited ink and under-coating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30)
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29. A method of producing ink jet printed images with high resistance to physical and chemical damage on plastic surfaces, comprising the steps of:
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a. providing a plastic object;
b. under-coating at least part of the surface of the plastic object with a solution containing a mixture of a hydrophilic polymer or polymers together with a hydrophobic polymer;
c. evaporating off the volatile part of the under-coated solution, thus depositing a solid film on the surface of the plastic object;
d. providing an ink-jet ink comprising a colorant and aqueous carrier;
e. jetting the ink by means of an ink-jet system onto the surface of the under-coating on the plastic object;
f. warming the printed surface to drive part of the water in the ink into the surface coating and to evaporate the other part of the water;
g. over-coating the dried surface with a water-based coating; and
h. heating the over-coating to dry it and to seal-in the previously deposited ink and under-coating.
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Specification