US 12,168,365 B2
Process and system for the production of slabs made of mineral grits bound with resins
Fabio Tarozzi, Formigine (IT)
Assigned to SITI—B&T GROUP S.p.A., Formigine (IT)
Appl. No. 17/762,053
Filed by SITI—B&T GROUP S.p.A., Formigine (IT)
PCT Filed Sep. 18, 2020, PCT No. PCT/IB2020/058706
§ 371(c)(1), (2) Date Mar. 19, 2022,
PCT Pub. No. WO2021/053596, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 102019000016799 (IT), filed on Sep. 19, 2019.
Prior Publication US 2022/0388331 A1, Dec. 8, 2022
Int. Cl. B44F 9/04 (2006.01); B28B 1/00 (2006.01); B28B 11/00 (2006.01); B44C 5/04 (2006.01)
CPC B44C 5/0453 (2013.01) [B28B 1/005 (2013.01); B28B 11/001 (2013.01)] 13 Claims
 
1. A process for the production of slabs made of mineral grits bound with resins comprising the phases of:
supplying a basic mixture comprising mineral grits and resins;
loading said basic mixture inside at least one forming mold so as to obtain a laying surface facing downwards and an exposed surface facing upwards;
compacting said basic mixture inside said forming mold to obtain a compacted slab; and
hardening said compacted slab to obtain a slab made of mineral grits, wherein
after said compaction, a decoration phase with ink by means of digital printing of said exposed surface of said compacted slab, wherein
said forming mold is open at the top and said process further comprising a first phase of closure of said forming mold prior to said compaction.