Methods for manufacturing printed textiles
A method for manufacturing printed textiles includes the steps of: a) inkjet printing an image onto a textile substrate with one or more inkjet inks including an aqueous medium and capsules composed of a polymeric shell surrounding a core which contains one or more thermally curable compounds; and b) thermally fixing the inkjet printed image. Inkjet printed textiles contain a printed image on a textile substrate wherein pigments and/or disperse dyes are at least partially encapsulated by polymeric shell material from capsules composed of a polymeric shell surrounding a core.
1. A method for manufacturing printed textiles comprising the steps of:
inkjet printing an image onto a textile substrate with one or more inkjet inks, wherein each of the one or more inkjet inks comprises an aqueous medium and capsules, the capsules include a polymeric shell surrounding a core, the core contains one or more thermally curable compounds including a tri- or tetrafunctional blocked isocyanate, and the polymeric shell contains a polyurea polymer, the capsules are dispersed in the aqueous medium using a dispersing group covalently bonded to the polymeric shell, the dispersing group is selected from the group consisting of a carboxylic acid or salt thereof, a sulfonic acid or salt thereof, a phosphoric acid ester or salt thereof, a phosphoric acid or salt thereof, an ammonium group, a sulfonium group, and a phosphonium group; and
thermally fixing the inkjet printed image.
2. The method according to claim 1 , wherein the capsules have an average particle size of no more than 4 μm as determined by dynamic laser diffraction.
3. The method according to claim 1 , wherein the one or more inkjet inks includes a colorant selected from the group consisting of a pigment and a disperse dye.
4. The method according to claim 1 , wherein the polymeric shell is crosslinked.
5. The method according to claim 1 , wherein the one or more inkjet inks includes a thermal catalyst selected from the group consisting of a Bronsted acid, a Lewis acid, and a thermal acid generator.
6. The method according to claim 1 , wherein the one or more inkjet inks includes an optothermal converting agent.
7. The method according to claim 6 , wherein the optothermal converting agent comprises an infrared dye.
8. The method according to claim 1 , wherein the substrate is selected from the group consisting of cotton textiles, silk textiles, flax textiles, jute textiles, hemp textiles, modal textiles, bamboo fibre textiles, pineapple fibre textiles, basalt fibre textiles, ramie textiles, polyester based textiles, acrylic based textiles, glass fibre textiles, aramid fibre textiles, polyurethane textiles, high density polyethylene textiles, and mixtures thereof.
9. The method according to claim 2 , wherein the one or more inkjet inks includes a colorant selected from the group consisting of a pigment and a disperse dye.
10. The method according to claim 2 , wherein the polymeric shell is crosslinked.
11. The method according to claim 2 , wherein the one or more inkjet inks includes a thermal catalyst selected from the group consisting of a Brönsted acid, a Lewis acid, and a thermal acid generator.
12. The method according to claim 2 , wherein the one or more inkjet inks includes an optothermal converting agent.
13. The method according to claim 12 , wherein the optothermal converting agent comprises an infrared dye.
14. The method according to claim 2 , wherein the substrate is selected from the group consisting of cotton textiles, silk textiles, flax textiles, jute textiles, hemp textiles, modal textiles, bamboo fibre textiles, pineapple fibre textiles, basalt fibre textiles, ramie textiles, polyester based textiles, acrylic based textiles, glass fibre textiles, aramid fibre textiles, polyurethane textiles, high density polyethylene textiles, and mixtures thereof.