US 12,109,725 B2
Method for pressing ceramic slabs
Franco Stefani, Sassuolo (IT); Franco Gozzi, Formigine (IT); and Ivan Ghirelli, Castellarano (IT)
Assigned to SYSTEM CERAMICS S.P.A., Fiorano Modenese (IT)
Appl. No. 17/040,630
Filed by SYSTEM CERAMICS S.P.A., Fiorano Modenese (IT)
PCT Filed Mar. 25, 2019, PCT No. PCT/IB2019/052401
§ 371(c)(1), (2) Date Sep. 23, 2020,
PCT Pub. No. WO2019/186365, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 102018000003939 (IT), filed on Mar. 26, 2018.
Prior Publication US 2021/0114254 A1, Apr. 22, 2021
Int. Cl. B28B 13/02 (2006.01); B28B 3/02 (2006.01); B28B 17/00 (2006.01)
CPC B28B 13/022 (2013.01) [B28B 3/02 (2013.01); B28B 17/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A pressing method for pressing ceramic slabs or tiles, wherein the pressing takes place through a press structured to press a maximum format comprising following steps:
spreading a layer of granular or powdered material on a continuous pressing plane, wherein the layer comprises at least a first zone, made of a granular or powdered primary material, which has a smaller area and border than the maximum format, and at least a second zone, made of a granular or powdered secondary material, different from the primary material, which has an area and border conformed so that the total border and area of the layer correspond to the maximum format;
pressing the layer using a press;
separating at least a main portion of the first zone from the second zone,
wherein the primary material of the main portion of the first zone is separated from all of the secondary material.