Decorating with powder material
A method for applying a pattern of granular material on a receiving surface includes in sequence the following steps: associating the granular material with a transferring surface together with a liquid aggregating phase and according to a prefiguration of the pattern; facing the transferring surface carrying the granular material and the liquid phase to the receiving surface in a transferring zone; heating at least one portion of the liquid phase in the transferring zone in order to detach the granular material from the transferring surface and applying the granular material on the receiving surface.
1. Method for applying a pattern of granular material on a receiving surface, comprising in sequence:
arranging granular material on a transferring surface by projecting said granular material from a rotating device onto said transferring surface, said rotating device further collecting an excess of said granular material that was not kept by said transferring surface; wherein the arranging further comprises, before the projecting, applying a liquid on the transferring surface according to a prefiguration of the pattern by means of an inklet device;
facing said transferring surface to said receiving surface and causing a pattern of granular material to be detached from said transferring surface and transferred onto said receiving surface; wherein said collecting comprises moving said excess into surface recesses of said rotating device along a path underlying said rotating device.
2. Method according to claim 1 , wherein said collecting further comprises moving said excess towards a lower outlet of a supply arrangement for supplying said granular material, said excess thereby interacting with a flow of said granular material exiting said outlet.
3. Method according to claim 2 , wherein said interacting causes said flow to be substantially equivalent to the amount of said granular material kept by said transferring surface.
4. Method according to claim 1 , wherein, during said projecting, the granular material is projected from said rotating device towards a first portion of the transferring surface, said first portion facing downwards, and wherein, during said collecting, said excess is collected by said rotating device in proximity of a second portion of the transferring surface, said second portion being located downstream of the first portion and facing downwards.
5. Method according to claim 1 , wherein, during said projecting, the granular material is projected from said rotating device towards a first portion of the transferring surface, said first portion facing upwards, and wherein, during said collecting, said excess is collected by said rotating device in proximity of a second portion of the transferring surface, said second portion being located downstream of the first portion and facing downwards.
6. Method according to claim 1 , comprising providing said rotating device with distinct types of said granular material, said distinct types of said granular material differing from one another for their colour.
7. Method according to claim 1 , wherein said receiving surface is a surface of a ceramic tile.
8. Method according to claim 1 , wherein the rotating device is a cylindrical rotor.