Provision of images on surfaces
View Patent ↗A method of providing a surface of a material with an image, includes applying to the surface an image sheet included (i) a flexible layer of a Shape Memory Polymer, and (ii) an image bonded to said layer by means of an image key coat. The image sheet is bonded to the surface by means of an adhesive and a process which involves heating of the Shape Memory Polymer to a temperature above its Glass Transition Temperature.
1. A method of providing a surface of a material with an image, the method comprising applying to the surface an image sheet comprised of
(i) a flexible layer of a Shape Memory Polymer, and
(ii) an image bonded to said layer by means of an image key coat, and bonding said image sheet to the surface by means of an adhesive and a process which involves heating of the Shape Memory Polymer to a temperature above its Glass Transition Temperature.
2. A method as claimed in claim 1 wherein the material is flexible.
3. A method as claimed in claim 1 wherein the material is leather, a textile material or a synthetic plastics material.
4. A method as claimed in claim 3 wherein the material is leather.
5. A method as claimed in claim 1 wherein the Shape Memory Polymer has a T g value of 25-45° C.
6. A method as claimed in claim 1 wherein the Shape Memory Polymer layer has a thickness of 20 to 60 microns.
7. A method as claimed in claim 1 wherein the image key coat comprises an adhesive or an adhesion promoter.
8. A method as claimed in claim 7 wherein an ink receptive layer is provided between the image and the layer of the adhesive or adhesion promoter providing the image key coat.
9. A method as claimed in claim 1 wherein the adhesive for bonding the image sheet to the material is a heat activated adhesive which is activated at a temperature 2-3° lower than the Glass Transition Temperature of the Shape Memory Polymer layer.