PRINTING ON A TEXTILE

• US 20200131388A1
• Filed: 10/18/2017
• Published: 04/30/2020
• Est. Priority Date: 10/18/2017
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Guo, Dennis Z., Zheng, Jie
• Granted Patent: US 10,907,060 B2
• Time in Patent Office: Days
• CPC Class Codes: C09D 11/106 containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C09D 11/107 from unsaturated acids or derivatives thereof
• CPC Class Codes: C09D 11/322 Pigment inks
• CPC Class Codes: C09D 11/38 characterised by non-macromolecular additives other than solvents, pigments or dyes
• CPC Class Codes: D06P 1/44 using insoluble pigments or auxiliary substances, e.g. binders
• CPC Class Codes: D06P 1/5221 Polymers of unsaturated hydrocarbons, e.g. polystyrene polyalkylene
• CPC Class Codes: D06P 1/525 Polymers of unsaturated carboxylic acids or functional derivatives thereof
• CPC Class Codes: D06P 1/5257 (Meth)acrylic acid
• CPC Class Codes: D06P 5/2077 after dyeing
• CPC Class Codes: D06P 5/30 Ink jet printing

Abstract

In an example of a method for printing on a textile, a print is generated by thermal inkjet printing a thermal inkjet ink on a cotton fabric. The thermal inkjet ink consists of a pigment, a single dispersant and binder resin, a vehicle, and a balance of water. The single dispersant and binder resin is a styrene acrylic resin having an acid number greater than 100 mg KOH/g and a weight average molecular weight less than 50,000. The vehicle includes a co-solvent, an anti-kogation agent, a humectant, a surfactant, a biocide, or combinations thereof. The print is generated without a post-printing curing process.

Claims

1. A method for printing on a textile, comprising:

generating a print by thermal inkjet printing a thermal inkjet ink on a cotton fabric, the thermal inkjet ink including;

a pigment;

a single dispersant and binder resin, the single dispersant and binder resin being a styrene acrylic resin having an acid number greater than 100 mg KOH/g and a weight average molecular weight less than 50,000;

a vehicle including a co-solvent, an anti-kogation agent, an anti-decel agent, a surfactant, a biocide, a pH adjuster, or combinations thereof; and

a balance of water;

wherein the print is generated without a post-printing curing process.

2. The method as defined in claim 1 wherein the print exhibits a Δ

E ranging from about 2.0 to about 3.5 after being washed.

3. The method as defined in claim 1 wherein:

the cotton fabric is an as-received pre-treated cotton fabric; and

generating the print is performed without performing a pre-treatment process on the as-received pre-treated cotton fabric.

4. The method as defined in claim 1 wherein:

the cotton fabric is an as-received pre-treated cotton fabric; and

a pre-treatment on the as-received pre-treated cotton fabric includes calcium, polymer, or a combination thereof.

5. The method as defined in claim 1 wherein the single dispersant and binder is physically absorbed to at least some of the pigment.

6. The method as defined in claim 1 wherein the styrene acrylic resin has an acid number ranging from about 120 mg KOH/g to about 300 mg KOH/g and a weight average molecular weight ranging from about 3,000 to about 30,000.

7. The method as defined in claim 1 wherein:

the pigment is present in an amount ranging from about 0.5 wt % to about 6 wt % of a total weight of the thermal inkjet ink; and

the single dispersant and binder resin is present in an amount ranging from about 0.1 wt % to about 6 wt % of the total weight of the thermal inkjet ink.

8. The method as defined in claim 1 wherein the thermal inkjet ink consists of the pigment;

the single dispersant and binder resin;

the vehicle; and

the water.

9. A method for improving washfastness of a cotton fabric, the method comprising:

introducing the cotton fabric into a thermal inkjet printer;

using the thermal inkjet printer, generating a print by thermal inkjet printing a thermal inkjet ink on the cotton fabric, the thermal inkjet ink including;

a pigment;

a single dispersant and binder resin, the single dispersant and binder resin being a styrene acrylic resin having an acid number greater than 100 mg KOH/g and a weight average molecular weight less than 50,000;

a vehicle including a co-solvent, an anti-kogation agent, an anti-decel agent, a surfactant, a biocide, a pH adjuster, or combinations thereof; and

a balance of water; and

allowing the print to dry without performing a curing process.

10. The method as defined in claim 9, further comprising washing the cotton fabric with the print thereon at least five times, wherein the print exhibits a Δ

E ranging from about 2.0 to about 3.5 after the washings.

11. The method as defined in claim 9 wherein:

the cotton fabric is an as-received pre-treated cotton fabric; and

generating the print is performed without performing a pre-treatment process on the as-received pre-treated cotton fabric.

12. The method as defined in claim 9 wherein:

the cotton fabric is an as-received pre-treated cotton fabric; and

a pre-treatment on the as-received pre-treated cotton fabric includes calcium, a polymer, or a combination thereof.

13. The method as defined in claim 9 wherein the styrene acrylic resin has an acid number ranging from about 120 mg KOH/g to about 300 mg KOH/g and a weight average molecular weight ranging from about 3,000 to about 30,000.

14. The method as defined in claim 9 wherein the thermal inkjet ink consists of the pigment;

the single dispersant and binder resin;

the vehicle; and

the water.

15. A method for making a thermal inkjet ink, comprising:

mixing a vehicle with a pigment dispersion;

wherein;

the vehicle includes water and a co-solvent, an anti-kogation agent, an anti-decel agent, a surfactant, a biocide, a pH adjuster, or combinations thereof;

the pigment dispersion includes water, a pigment, and a single dispersant and binder resin, the single dispersant and binder resin being a styrene acrylic resin having an acid number greater than 100 mg KOH/g and a weight average molecular weight less than 50,000; and

no additional dispersant or binder resin is added to the pigment dispersion or to the vehicle.