Inkjet textile printing method

Patent metadata

Field	Value
Publication number	US-2025361676-A1
Application number	US-202318873860-A
Country	US
Kind code	A1
Filing date	Jun 23, 2023
Priority date	Sep 6, 2022
Publication date	Nov 27, 2025
Grant date	—

Abstract

An inkjet textile printing method includes: a step A of preparing a light-colored textile pretreated with a pretreatment solution; a step B of applying by inkjet a white ink composition containing a white pigment, a water-dispersible resin, and water, to the pretreated light-colored textile; and a step C of applying by inkjet a chromatic color ink composition containing a chromatic color pigment, a water-dispersible resin, and water, onto an ink layer formed by the application of the white ink composition, in which an application amount of the white ink composition per unit area in an application region of the white ink composition is 3.0 to 13.0 times relative to an application amount of the chromatic color ink composition per unit area in an application region of the chromatic color ink composition in terms of solid content mass ratio.

First claim

1 . An inkjet textile printing method comprising steps A to C below in this order:
a step A of preparing a light-colored textile pretreated with a pretreatment solution; a step B of applying by inkjet a white ink composition containing a white pigment, a water-dispersible resin having a glass transition temperature of −25° C. or higher, and water, to the pretreated light-colored textile; and a step C of applying by inkjet a chromatic color ink composition containing a chromatic color pigment, a water-dispersible resin having a glass transition temperature of −25° C. or higher, and water, onto an ink layer formed by the application of the white ink composition, wherein an application amount of the white ink composition per unit area in an application region of the white ink composition in the pretreated light-colored textile is 3.0 to 13.0 times relative to an application amount of the chromatic color ink composition per unit area in an application region of the chromatic color ink composition in the pretreated light-colored textile in terms of solid content mass ratio.

2 . The inkjet textile printing method according to claim 1 , wherein the pretreatment solution contains a polyvalent metal salt and a water-dispersible resin.

3 . The inkjet textile printing method according to claim 1 , wherein the water-dispersible resin contained in the white ink composition and/or the chromatic color ink composition is a urethane-based resin.

4 . An inkjet textile printing apparatus for subjecting a textile to inkjet textile printing, the inkjet textile printing apparatus comprising:
an inkjet head X for coating a textile with a white ink composition containing a white pigment, a water-dispersible resin having a glass transition temperature of −25° C. or higher, and water; an inkjet head Y for coating the textile with a chromatic color ink composition containing a chromatic color pigment, a water-dispersible resin having a glass transition temperature of −25° C. or higher, and water; a transfer mechanism that transfers the textile; and a controller that controls the inkjet head X, the inkjet head Y, and the transfer mechanism, wherein the controller is configured such that the chromatic color ink composition is applied onto a coating film formed on the textile with the white ink composition, and the controller is configured such that an application amount of the white ink composition per unit area in an application region of the white ink composition in the textile is 3.0 to 13.0 times relative to an application amount of the chromatic color ink composition per unit area in an application region of the chromatic color ink composition in the textile in terms of solid content mass ratio.

5 . The inkjet textile printing method according to claim 2 , wherein the water-dispersible resin contained in the white ink composition and/or the chromatic color ink composition is a urethane-based resin.

Assignees

• Sakata Inx Corp

Inventors

• NODA Ryuta
• Murakami Masaki
• Konishi Hiroyuki

Classifications

• D06P5/002

  Locally enhancing dye affinity of a textile material by chemical means · CPC title

• D06P1/5285

  Polyurethanes; Polyurea; Polyguanides · CPC title

• C09D11/54

  Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink · CPC title

• C09D11/38 Primary

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title

• C09D11/102

  containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds · CPC title