PROCESS FOR THE APPLICATION OF A COVERING LAYER TO A POLYMERIC PRODUCT, DEVICE FOR CARRYING OUT SAID PROCESS AND PRODUCT MADE WITH SAID PROCESS
Process for the application of a covering layer to a polymeric product ( 10 ), in particular a sheet or a panel, comprising the steps of: —providing a planar substrate ( 11 ) of polymeric material, with an ink layer ( 12 ) deposited on a surface of said planar substrate ( 11 ) to define a printing pattern; —applying, above said ink layer ( 12 ), an interface layer in a respective application station ( 3 ); —applying a covering layer ( 14 ) of transparent polymeric material, above said interface layer and as a protection of the printing pattern in a respective rolling station ( 4 ).
1 . A process for the application of a covering layer to a polymeric product, in particular a sheet or a panel, comprising the steps of:
providing a planar substrate of polymeric material, with an ink layer deposited on a surface of said planar substrate to define a printing pattern;
applying, above said ink layer, an interface layer;
applying a covering layer of transparent polymeric material, above said interface layer and as a protection of the printing pattern.
2 . The process according to claim 1 , wherein said interface layer comprises at least one adhesive substance.
3 . The process according to claim 2 , wherein said adhesive substance is a polymerizable adhesive substance, the process further comprising a step of polymerizing said interface layer.
4 . The process according to claim 3 , wherein said step of polymerizing the interface layer is subsequent to the step of applying the covering layer.
5 . The process according to claim 4 , wherein in said step of polymerizing the interface layer it is exposed to an ultraviolet light.
6 . The process according to claim 1 , wherein said planar substrate and the covering layer are both made of polyvinylchloride.
7 . The process according to claim 1 , wherein said step of applying the covering layer is made by rolling.
8 . The process according to claim 7 , wherein said rolling that applies the covering layer is a cold rolling.
9 . The process according to claim 1 , wherein said ink layer comprises a U.V. ink.
10 . The process according to claim 1 , wherein the interface layer is applied through an application roller.
11 . The process according to claim 1 , wherein said step of providing the planar substrate comprises a step of digital printing in which the ink layer is deposited, said step of digital printing being carried out in-line with the subsequent steps of applying the interface layer and of applying the covering layer.
12 . A device for applying a covering layer to a polymeric product, in particular a sheet or a panel, comprising:
means for moving forward a planar substrate of polymeric material, with an ink layer deposited on a surface thereof to define a printing pattern, along a forward direction;
an application station for applying an interface layer above said planar substrate; and
a rolling station for rolling a covering layer of transparent polymeric material on the planar substrate placed downstream of said application station.
13 . The device according to claim 12 , further comprising a digital printer for depositing the ink layer above the forward-moving planar substrate, placed in-line downstream of said application and rolling stations.
14 . A polymeric product, in particular a sheet or a panel, comprising:
a planar substrate of polymeric material;
an ink layer defining a printing pattern directly in contact with a surface of said planar substrate;
a covering layer of transparent polymeric material placed above said ink layer and as a protection of the printing pattern; and
an interface layer interposed between the ink layer and the covering layer.
15 . The polymeric product according to claim 14 , wherein said ink layer comprises a U.V. ink and said interface layer comprises a polymerizable adhesive.