Heat transfer paper with peelable film and discontinuous coatings
View Patent ↗The present invention is directed to a unique heat transfer material for use in transferring a discontinuous coating onto a substrate, such as an article of clothing. The heat transfer material of the present invention may be used cold peel transfer processes, resulting in an image-bearing coating having superior crack resistance, washability, and breathability compared to conventional image-bearing coatings. Additionally, the materials may be used on dark colored fabrics without washed-out appearance typically associated with printing on darker fabrics. The heat transfer material of the present invention produces superior results due to the use of discontinuous coatings.
1. A heat transfer material comprising:
a substrate layer;
a release coating layer;
a peelable film layer overlying said release coating layer, wherein said peelable film layer is melt-flowable at a transfer temperature; and
a discontinuous polymer layer including an opacifying material and a crosslinking agent, said discontinuous polymer layer overlying said peelable film layer.
2. The heat transfer material of claim 1 , wherein the opacifying material is a white pigment.
3. The heat transfer material of claim 1 , wherein the crosslinking agent is selected from the group consisting of multifunctional isocyanates, epoxy resins, aziridines, oxazolines, and melamine-formaldehyde resins.
4. The heat transfer material of claim 1 , wherein the peelable film layer is selected from the group consisting of polyolefins; polyethylene; ethylene-containing copolymers, and mixtures thereof.
5. The heat transfer material of claim 1 , wherein the peelable film layer includes an additive selected from the group consisting of a release agent, an ethoxylated alcohol surfactant; a nonionic surfactant; a wax, and mixtures thereof.
6. The heat transfer material of claim 1 , wherein the release coating layer is selected from the group consisting of silicone-containing polymers; acrylic polymers; poly(vinyl acetate); polysiloxanes; fluorocarbon polymers; and mixtures thereof.
7. The heat transfer material of claim 1 , wherein the release coating layer includes an additive selected from the group consisting of a crosslinking agent; a release-modifying additive; a curing agent; a surfactant; a viscosity-modifying agent; and mixtures thereof.
8. The heat transfer material of claim 1 , wherein the substrate layer is selected from the group consisting of cellulosic nonwoven webs and polymeric films.
9. A heat transfer material comprising:
a substrate layer;
a release coating layer;
a peelable film layer overlying said release coating layer, wherein said peelable film layer is melt-flowable at a transfer temperature; and
a discontinuous printable layer overlying said peelable film layer, wherein the discontinuous printable layer includes a crosslinking agent.
10. The heat transfer material of claim 9 , wherein the peelable film layer is selected from the group consisting of polyolefins; polyethylene; ethylene-containing copolymers, and mixtures thereof.
11. The heat transfer material of claim 9 , wherein the peelable film layer includes an additive selected from the group consisting of a release agent, an ethoxylated alcohol surfactant; a nonionic surfactant; a wax, and mixtures thereof.
12. The heat transfer material of claim 9 , wherein the release coating layer is selected from the group consisting of silicone-containing polymers; acrylic polymers; poly(vinyl acetate); polysiloxanes; fluorocarbon polymers; and mixtures thereof.
13. The heat transfer material of claim 9 , wherein the release coating layer includes an additive selected from the group consisting of a crosslinking agent; a release-modifying additive; a curing agent; a surfactant; a viscosity-modifying agent; and mixtures thereof.
14. The heat transfer material of claim 9 , wherein the substrate layer is selected from the group consisting of cellulosic nonwoven webs and polymeric films.
15. The heat transfer material of claim 9 , wherein the crosslinking agent is a polyfunctional aziridine crosslinking agent.