Pre-treatment composition for inkjet printing
A pre-treatment composition for inkjet printing, comprising water, a water-soluble multi-valent metallic salt, a wax, a non-ionic dispersant and a resin particle, the resin particle is stabilized by a non-ionic group or non-ionic or amphiphilic compound. A fluid set comprising the pre-treatment composition and an aqueous inkjet ink is suitable for printing liners for corrugated packaging, folding boards or a corrugated card boards.
1 . A pre-treatment composition for inkjet printing, comprising water, a water-soluble multi-valent metallic salt, a wax, a non-ionic dispersant and a resin particle,
wherein the resin is selected from the group consisting of poly(urethanes) and copolymers thereof, acrylics and copolymers thereof, poly(esters) and copolymers thereof, poly(styrenes) and copolymers thereof, poly(vinyl amides) and copolymers thereof, poly (vinyl alcohol) derivatives and copolymers thereof, poly (acetals) and copolymers thereof, poly(ethers) and copolymers thereof, poly(vinyl ethers) and copolymers thereof, polyvinyl(esters) and copolymers thereof, poly(imides) and copolymers thereof, poly(imines) and copolymers thereof, polycarbonates and copolymers thereof, poly(vinyl chloride) and copolymers thereof, poly (vinylidene chloride) and copolymers thereof poly(amic acids) and copolymers thereof, poly(saccharides) and derivatives thereof, and cellulose and derivatives thereof, and
wherein the resin particle is stabilized by a non-ionic group or a non-ionic or amphiphilic compound, and
wherein the non-ionic dispersant is a PPO/PEO copolymer, an arylethylphenyl polyglycolether, or a fatty acid derivative with EO/PO moieties.
2 . The pre-treatment composition of claim 1 , wherein the non-ionic group is selected from the group consisting of a polyethylene glycol graft, a cellulose, a dextran, a sugar derivative, and a grafted polyvinylalcohol.
3 . The pre-treatment composition of claim 1 , wherein the non-ionic or amphiphilic compound is selected from the group consisting of polyvinyl alcohol copolymers, cellulose derivatives, dextrin derivatives, polysaccharide derivatives, and cyclodextrin.
4 . The pre-treatment composition of claim 2 , wherein the non-ionic or amphiphilic compound is selected from the group consisting of polyvinyl alcohol copolymers, cellulose derivatives, dextrin derivatives, polysaccharide derivatives, and cyclodextrin.
5 . The pre-treatment composition of claim 1 , wherein the non-ionic dispersant is a PPO/PEO copolymer having an average Mw from 4000 g/mol to 8500 g/mol and a PPO/PEO weight ratio from 0.3 to 3.0.
6 . The pre-treatment composition of claim 2 , wherein the non-ionic dispersant is a PPO/PEO copolymer having an average Mw from 4000 g/mol to 8500 g/mol and a PPO/PEO weight ratio from 0.3 to 3.0.
7 . The pre-treatment composition of claim 1 , further comprising a pigment.
8 . A fluid set comprising the aqueous pre-treatment composition as defined in claim 1 and an aqueous ink, the aqueous ink comprising a colorant.
9 . A fluid set comprising the aqueous pre-treatment composition as defined in claim 2 and an aqueous ink, the aqueous ink comprising a colorant.
10 . A fluid set comprising the aqueous pre-treatment composition as defined in claim 5 and an aqueous ink, the aqueous ink comprising a colorant.
11 . The fluid set of claim 8 , wherein the aqueous ink comprises a resin selected from the group consisting of an acrylic based resin, a urethane based resin, and a wax.
12 . The fluid set of claim 9 , wherein the aqueous ink comprises a resin selected from the group consisting of an acrylic based resin, a urethane based resin, and a wax.
13 . The fluid set of claim 10 , wherein the aqueous ink comprises a resin selected from the group consisting of an acrylic based resin, a urethane based resin and a wax.
14 . A printing method comprising the steps of:
a) applying the pre-treatment composition as defined in claim 1 to a substrate;
b) jetting onto the applied pre-treatment composition an aqueous inkjet ink containing a colorant;
c) optionally at least partially dry the applied pre-treatment composition; and
d) applying heat to dry the applied pre-treatment composition and the jetted aqueous inkjet ink.
15 . The printing method of claim 14 , wherein the pre-treatment composition is applied via a jetting technique.
16 . The printing method of claim 14 , wherein the substrate is a liner for corrugated packaging, a folding board, or a corrugated card board.
17 . The printing method of claim 14 , wherein the aqueous inkjet ink comprises a pigment as colorant and a wax.
18 . A printed liner or corrugated card board obtained by the printing method as defined in claim 14 .
19 . A printing method comprising the steps of:
a) applying the pre-treatment composition as defined in claim 2 to a substrate;
b) jetting onto the applied pre-treatment composition an aqueous inkjet ink containing a colorant;
c) optionally at least partially dry the applied pre-treatment composition; and
d) applying heat to dry the applied pre-treatment composition and the jetted aqueous inkjet ink.
20 . A printing method comprising the steps of:
a) applying the pre-treatment composition as defined in claim 5 to a substrate;
b) jetting onto the applied pre-treatment composition an aqueous inkjet ink containing a colorant;
c) optionally at least partially dry the applied pre-treatment composition; and
d) applying heat to dry the applied pre-treatment composition and the jetted aqueous inkjet ink.