Hot melt calendered or extruded wear layer for embossed substrates
View Patent ↗The invention relates to a textured surface covering having a hot melt wear layer without distortion of the visual image of the textured substrate. The wear layer substantially follows the contours of the substrate with minimum change in thickness of the wear layer over the textured surface and provides an aesthetically pleasing three dimensional appearance to the textured surface of the substrate. The wear layer exhibits significant clarity and visual depth, as well as improved maintenance (cleanability) properties. The resulting product has a visual image clarity reflecting any texture in the substrate including very light reflective (lenticular moray) embossings.
1. A textured surface covering comprising a textured substrate and a layer overlying said textured substrate;
said layer comprising a melt processable composition comprising a melt processable polymer resin and a methylmethacrylate/acrylic copolymer processing aid;
said textured substrate having a textured surface, the textured surface having an area in which the difference in height of the textured surface is about 1 mil vertical distance over no more than about 20 mils horizontal distance;
said layer having a first surface adjacent the textured surface and a second surface spaced from said textured surface; and
said layer conforming to said textured surface, whereby the first and second surfaces substantially follow the contours of the textured surface;
wherein said layer overlying the area has a thickness that varies less than about 20%.
2. A textured surface covering comprising a textured substrate and a layer overlying said textured substrate;
said layer comprising a melt processable composition comprising a melt processable polymer resin and a methylmethacrylate/acrylic copolymer processing aid;
said textured substrate having a textured surface, the textured surface having an area in which the difference in height of the textured surface is about 1 mil vertical distance over no more than about 20 mils horizontal distance;
said layer having a first surface adjacent the textured surface and a second surface spaced from said textured surface; and
said layer conforming to said textured surface, whereby the first and second surfaces substantially follow the contours of the textured surface;
wherein the viscosity of the melt processable composition is between about 4,500 to about 70,000 poise at some temperature between 225° F. and 425° F.
3. The textured surface covering of claim 2 , wherein said layer overlying the area has a thickness that varies less than about 20%.
4. A textured surface covering comprising a textured substrate and a layer overlying said textured substrate;
said layer comprising a melt processable composition comprising a melt processable polymer resin and a methylmethacrylate/acrylic copolymer processing aid;
said textured substrate having a textured surface, the textured surface having an area in which the difference in height of the textured surface is about 2 mils vertical distance over no more than about 20 mils horizontal distance;
said layer having a first surface adjacent the textured surface and a second surface spaced from said textured surface; and
said layer conforming to said textured surface, whereby the first and second surfaces substantially follow the contours of the textured surface;
wherein said layer overlying the area has a thickness that varies less than about 20%.
5. A textured surface covering comprising a textured substrate and a layer overlying said textured substrate;
said layer comprising a melt processable composition comprising a melt processable polymer resin and a methylmethacrylate/acrylic copolymer processing aid;
said textured substrate having a textured surface, the textured surface having an area in which the difference in height of the textured surface is about 2 mils vertical distance over no more than about 20 mils horizontal distance;
said layer having a first surface adjacent the textured surface and a second surface spaced from said textured surface; and
said layer conforming to said textured surface, whereby the first and second surfaces substantially follow the contours of the textured surface;
wherein the viscosity of the melt processable composition is between about 4,500 to about 70,000 poise at some temperature between 225° F. and 425° F.
6. The textured surface covering of claim 5 , wherein said layer overlying the area has a thickness that varies less than about 20%.
7. A textured surface covering comprising a textured substrate and a layer overlying said textured substrate;
said layer comprising a melt processable composition comprising a melt processable polymer resin and a methylmethacrylate/acrylic copolymer processing aid;
said textured substrate having a textured surface, the textured surface having an area in which the difference in height of the textured surface is from about 1 mil to about 5 mils vertical distance over no more than about 20 mils horizontal distance;
said layer having a first surface adjacent the textured surface and a second surface spaced from said textured surface; and
said layer conforming to said textured surface, whereby the first and second surfaces substantially follow the contours of the textured surface;
wherein said layer overlying the area has a thickness that varies less than about 20%.
8. The textured surface covering of claim 7 , wherein there are no visible bubbles entrapped between the first surface of the layer and the adjacent textured surface of the textured substrate.
9. The textured surface covering of claim 7 , wherein the melt processable polymer resin comprises a general purpose polyvinyl chloride resin.
10. The textured surface covering of claim 7 , wherein the average thickness of the layer is between about 2 mils and about 50 mils.
11. The textured surface covering of claim 10 , wherein the average thickness of the layer is between about 10 mils and about 20 mils.
12. The textured surface covering of claim 7 , wherein the textured substrate comprises a fibrous material adjacent the textured surface.
13. The textured surface covering of claim 12 , wherein the fibrous material comprises a woven or non-woven fabric.
14. The textured surface covering of claim 7 , wherein the textured substrate comprises particulate material adjacent the textured surface.
15. The textured surface covering of claim 14 , wherein the particulate material is selected from the group consisting of filled polymeric chips, flakes, granules and spherical particles, unfilled polymeric chips, flakes, granules and spherical particles, and combinations thereof.
16. The textured surface covering of claim 7 , wherein the textured substrate is embossed, the textured substrate being free of chemical embossing inhibitor or accelerator.
17. A textured surface covering comprising a textured substrate and a layer overlying said textured substrate;
said layer comprising a melt processable composition comprising a melt processable polymer resin and a methylmethacrylate/acrylic copolymer processing aid;
said textured substrate having a textured surface, the textured surface having an area in which the difference in height of the textured surface is from about 1 mil to about 5 mils vertical distance over no more than about 20 mils horizontal distance;
said layer having a first surface adjacent the textured surface and a second surface spaced from said textured surface; and
said layer conforming to said textured surface, whereby the first and second surfaces substantially follow the contours of the textured surface;
wherein the viscosity of the melt processable composition is between about 4,500 to about 70,000 poise at some temperature between 225° F. and 425° F.
18. The textured surface covering of claim 17 , wherein said layer overlying the area has a thickness that varies less than about 20%.