In-line digital printing system for textile materials
View Patent ↗Compositions for and methods of digitally printing an ink image onto a woven textile material are provided. A base application is applied to the surface of a woven textile material, especially one comprising synthetic resin fibers prior to application of an ink image layer. The base application comprises an acrylic latex material that is formulated to imprinted upon with a digital ink while still wet, thereby eliminating the need for an intermediate drying cycle in between base application deposit and printing of the ink image.
1. A method of printing an image on a woven textile material comprising:
applying a base application to at least a portion of said woven textile material corresponding to an area upon which said image is to be imprinted, said base application comprising an aqueous acrylic latex material, one or more acrylic resins separate from said latex material, and one or more coalescing agents;
printing said ink image onto at least a portion of said textile material containing said base application with one or more digital inks using an inkjet printer; and
causing said ink image to cure upon said textile material thereby forming an imprinted textile article, wherein:
said base application comprises:
between about 30% to about 70% by weight of an aqueous acrylic latex material;
between about 2.5% to about 20% by weight of one or more acrylic resin dispersions;
between about 5% to about 20% by weight of one or more coalescing agents; and
between about 0 to about 40% by weight of a pigment dispersion; and
said base application is not formulated for use as an ink in forming an ink image.
2. The method according to claim 1 , wherein said base application is applied using an inkjet print head.
3. The method according to claim 1 , wherein said base application is applied to said textile material using one or more nozzles configured to generate a spray of fine droplets of said base application.
4. The method according to claim 1 , wherein said base application further comprises at least one of a viscosity control agent, a pigment, and a binder.
5. The method according to claim 1 , wherein said step of applying said base application and said printing steps occur in succession without an intervening step of exposing said textile material to a temperature in excess of 120° F. so as to cause drying of said base application.
6. The method according to claim 1 , wherein said step of causing said ink image to cure upon said textile material comprises directing said textile material through drying apparatus operating at a temperature in excess of 150° F. for a period of at least 30 seconds.
7. The method according to claim 1 , wherein said woven textile material is an article of clothing.
8. The method according to claim 1 , wherein said method is performed using an in-line printing apparatus comprising a conveyor passing through a base application station in which said base application is applied to said woven textile material, and a printing station where said ink image is printed on said textile material.
9. The method according to claim 1 , wherein said base application is not applied to any area of said woven textile material not also receiving said one or more digital inks.
10. The method according to claim 1 , wherein said woven textile material comprises a synthetic resin material.
11. The method according to claim 10 , wherein said synthetic resin material is selected from the group consisting of fibers of polyester, polyethylene, polypropylene, nylon, and blends thereof.
12. The method according to claim 1 , wherein said base application further comprises one or more aziridine compounds.
13. The method according to claim 12 , wherein said base application comprises a first part including said aqueous acrylic latex material, and a second part including said one or more aziridine compounds.
14. The method according to claim 1 , wherein said base application comprises an enzyme.
15. The method according to claim 1 , wherein said base application has a total water content of between about 15% to about 75% by weight.
16. The method according to claim 1 , wherein said base application further comprises between about 0.01 to about 5% by weight of a binder, said binder comprising triethanolamine.
17. The method according to claim 1 , wherein said base application is inkjettable and has a viscosity of between about 8 to about 60 cp.
18. The method according to claim 1 , wherein said coalescing agent comprises polyethylene glycol.
19. The method according to claim 1 , wherein said base application does not require drying prior to receiving one or more digital inks thereupon.
20. The method according to claim 1 , wherein said base application further comprises one or more aziridine compounds.
21. The method according to claim 1 , wherein said base application comprises a first part including said aqueous acrylic latex material, and a second part including said one or more aziridine compounds.