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US 10,471,633 B2Granted
Photocurable compositions
AssigneeLamerti SPA
InventorsElena Bellotti, Emilio Cremona, Silvia Mansi, Giovanni Floridi, Giuseppe Li Bassi
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Abstract
The present invention relates to a method for the preparation of dies for moulds for the production of tiles with three dimensional texture.
Claims18
A method for preparing tiles with a 3D texture, comprising:
- forming the tiles employing a mould equipped with a die prepared by a process
- comprising the steps of:
- I) providing a photocurable composition containing:
- a) from 70 to 99% by weight (% wt) of at least one ethylenically unsaturated compound;
- and
- b) from 1 to 12% wt of at least one photoinitiator;
- II) applying the photocurable composition onto the surface of a base-die to form a film with a three dimensional pattern;
- and
- III) photocuring the photocurable composition by exposing the surface of the base-die to light having a wavelength of from 200 to 600 nm to provide the 3D texture on the die for tile forming;
- with the proviso that the film, obtained by photocuring 200 g/m2 of the photocurable composition on a steel plate, has an elastic hardness of from about 50 to about 300 sec determined according to the standard method ISO 1522:2006.
7 more elements
Dependencies are inferred from the claim text.