Image transfer material and polymer composition
Provided is an image transfer material, comprising a support, optionally at least one barrier layer, a melt transfer layer, and an image receiving layer. Also provided is a process for preparing the image transfer material. Further provided is a heat transfer process using the disclosed material. In the heat transfer process, after imaging, the image receiving layer and melt transfer layer are peeled away from the optionally barrier-coated support material and placed, preferably image side up, on top of a receptor element. A non-stick sheet is then optionally placed over the imaged peeled material and heat is applied to the top of the optional non stick sheet. The melt transfer layer then melts and adheres the image to the receptor element. A composition comprising: at least one self-crosslinking polymer, and at least one dye retention aid.
1. An image transfer sheet for transferring an image to a receptor element, the image transfer sheet comprising:
a melt transfer layer;
an image receiving layer; and
a first opaque layer positioned between the melt transfer layer and the image receiving layer, the first opaque layer comprising a thermoplastic elastomer and a white pigment; and
a second opaque layer positioned between the melt transfer layer and the image receiving layer, the second opaque layer comprising a thermoplastic elastomer and a white pigment;
wherein the combined thickness of the first and second opaque layers is between 0.5 to 2.5 mils; and
wherein the second opaque layer has a composition different from a composition of the first opaque layer.
2. The image transfer sheet of claim 1 , wherein the melt transfer layer has a thickness of between 1 to 5 mils.
3. The image transfer sheet of claim 2 , wherein the melt transfer layer comprises at least one of a polyolefin, polyester, polyurethane, and acrylic polymer, the at least one of the polyolefin, polyester, polyurethane, and acrylic polymer having a melt transition temperature in the range of 50° C. to 250° C.
4. The image transfer sheet of claim 3 , wherein the image receiving layer is formulated to retain a dye or ink image therewithin.
5. The image transfer sheet of claim 4 , wherein the image receiving layer is formulated to retain an image formed by a laser printer, laser copier, or inkjet printer.
6. The image transfer sheet of claim 5 , wherein the image receiving layer is configured to heat seal the image upon application of heat to the image transfer sheet.
7. The image transfer sheet of claim 6 , wherein the image receiving layer comprises polyurethane.
8. The image transfer sheet of claim 7 , wherein the image receiving layer further comprises a polyamide.
9. The image transfer sheet of claim 8 , further comprising a removable support adjacent the melt transfer layer.
10. The image transfer sheet of claim 8 , wherein the image transfer sheet is configured to receive an image at the image receiving layer in the absence of a support layer that does not transfer to the receptor element.
11. The image transfer sheet of claim 10 , wherein at least one of the first opaque layer and second opaque layer provide a rigid or stiff quality to the image transfer sheet such that the image receiving layer can receive the image in the absence of a support layer that does not transfer to the receptor element.
12. The image transfer sheet of claim 6 , wherein the image receiving layer comprises a cationic polymer.
13. The image transfer sheet of claim 2 , wherein the melt transfer layer comprises at least one of a polyolefin, polyester, polyurethane, and acrylic polymer, the at least one of the polyolefin, polyester, polyurethane, and acrylic polymer having a glass transition temperature (Tg) of less than 25° C.
14. The image transfer sheet of claim 13 , wherein the first opaque layer further comprises styrene-butadiene latex.
15. The image transfer sheet of claim 13 , wherein the second opaque layer further comprises vinyl acetate-ethylene.
16. The image transfer sheet of claim 2 , wherein the first opaque layer further comprises styrene-butadiene latex.
17. The image transfer sheet of claim 2 , wherein the second opaque layer further comprises vinyl acetate-ethylene.