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1. WO2020112112 - IMPRESSION TEXTILE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

What is claimed is:

1. A textile printing method, comprising:

applying a thermally curable ink composition on a fabric substrate, the thermally curable ink composition including:

from about 1 wt% active to about 6 wt% active of a pigment that absorbs ultraviolet radiation, infrared radiation, or combinations thereof, based on a total weight of the thermally curable ink composition;

from about 2 wt% active to about 20 wt% active of a polymeric binder, based on the total weight of the thermally curable ink composition; and

an aqueous ink vehicle; and

selectively heating the pigment of the thermally curable ink composition applied on the fabric substrate by exposing the fabric substrate to an emission wavelength from a narrow wavelength light source for a total exposure time of 3 seconds or less, thereby thermally fixing the pigment to the fabric substrate.

2. The textile printing method as defined in claim 1 wherein the narrow wavelength light source is a light emitting diode that emits emission wavelengths ranging from about 365 nm to about 400 nm.

3. The textile printing method as defined in claim 1 , further comprising setting the narrow wavelength light source so that energy exposure ranges from about 2 J/cm2 to about 28 J/cm2

4. The textile printing method as defined in claim 1 wherein:

the applying of the thermally curable ink composition is accomplished in multiple print passes; and

the method further comprises exposing the fabric substrate to the emission wavelength from the narrow wavelength light source after each print pass for a time less than the total exposure time.

5. The textile printing method as defined in claim 4 wherein the time for exposing the fabric substrate to the emission wavelength from the narrow wavelength light source after each print pass ranges from about 0.1 second to about 1 second.

6. The textile printing method as defined in claim 1 wherein:

the application of the thermally curable ink composition occurs prior to the selectively heating; and

the selectively heating involves intermittent light source on events and light source off events.

7. The textile printing method as defined in claim 1 , further comprising warming or cooling the fabric substrate having the thermally curable ink composition thereon at a temperature below a fixation temperature of the thermally curable ink composition: i) before the selectively heating; or ii) concurrently with the selectively heating; or iii) both before and concurrently with the selectively heating.

8. The textile printing method as defined in claim 1 wherein the polymeric binder in the thermally curable ink composition is selected from the group consisting of a polyester-polyurethane binder, a polyether-polyurethane binder, a polycarbonate-polyurethane binder, a latex binder, and combinations thereof.

9. The textile printing method as defined in claim 1 wherein the fabric substrate is selected from the group consisting of cotton, a cotton blend, nylon, a nylon blend, polyester, a polyester blend, silk, a silk blend, spandex, a spandex blend, rayon, and a rayon blend.

10. A textile printing method, comprising:

applying a pre-treatment composition on a fabric substrate, the pre-treatment composition including:

a fixing agent selected from the group consisting of a multivalent metal cation, a cationic polymer, and a combination of a multivalent metal cation and a cationic polymer; and

an aqueous pre-treatment vehicle;

applying a thermally curable ink composition on the fabric substrate, the thermally curable ink composition including:

from about 1 wt% active to about 6 wt% active of a pigment that absorbs ultraviolet radiation, infrared radiation, or combinations thereof, based on a total weight of the thermally curable ink composition;

from about 2 wt% active to about 20 wt% active of a polymeric binder, based on the total weight of the thermally curable ink composition; and

an aqueous ink vehicle; and

selectively heating the pigment of the thermally curable ink composition applied on the fabric substrate by exposing the fabric substrate to an emission wavelength from a narrow wavelength light source for a total exposure time of 3 seconds or less, thereby thermally fixing the pigment to the fabric substrate.

11. The textile printing method as defined in claim 10 wherein the narrow wavelength light source is a light emitting diode that emits emission wavelengths ranging from about 365 nm to about 400 nm.

12. The textile printing method as defined in claim 10, further comprising setting the narrow wavelength light source so that the energy exposure ranges from about 2 J/cm2 to about 28 J/cm2

13. The textile printing method as defined in claim 10 wherein:

the application of the pre-treatment composition occurs prior to the application of the thermally curable ink composition;

the applying of the thermally curable ink composition is accomplished in multiple print passes; and

the method further comprises exposing the fabric substrate to the emission wavelength from the narrow wavelength light source after each print pass for a time less than the total exposure time.

14. The textile printing method as defined in claim 10 wherein:

the application of the pre-treatment composition occurs prior to the application of the thermally curable ink composition;

the application of the thermally curable ink composition occurs prior to the selectively heating; and

the selectively heating involves intermittent light source on events and light source off events.

15. The textile printing method as defined in claim 10, further comprising warming or cooling the fabric substrate having the pre-treatment composition and the thermally curable ink composition thereon at a temperature below a fixation

temperature of the thermally curable ink composition: i) before the selectively heating; or ii) concurrently with the selectively heating; or iii) both before and concurrently with the selectively heating.