Method for manufacturing tiles having their exposed side provided with depressions and reliefs to reproduce the appearance of split quarrystone

(19)

(11)

EP 1 101 584 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	26.03.2003 Bulletin 2003/13

(43)	Date of publication A2:
	23.05.2001 Bulletin 2001/21

(21)	Application number: 00203852.9

(22)	Date of filing: 03.11.2000

(51)	International Patent Classification (IPC)⁷: B28B 3/02, B28B 11/04, B28B 7/00, B28B 11/00

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

15.11.1999 IT RE990116

(71)	Applicant: Gruppo Ceramiche Saicis S.P.A.
	41100 Modena (IT)

(72)	Inventor:
	Zini, Massimo 41100 Modena (IT)

(74)	Representative: Corradini, Corrado et al
	Studio Ing. C. CORRADINI & C. S.r.l. 4, Via Dante Alighieri 42100 Reggio Emilia 42100 Reggio Emilia (IT)

(54)	Method for manufacturing tiles having their exposed side provided with depressions and reliefs to reproduce the appearance of split quarrystone

(57) The method comprises the following operations:

in a usual mould, forming a crude tile from an atomized powder mix, that mould punch intended to create the exposed face of the tile reproducing the appearance of split quarrystone or of a non-flat surface;
drying the thus formed tile in a continuous dryer in accordance with a usual drying cycle;
applying on the exposed side of the dried tile at least one layer of coloured atomized clay or of pigment in powder form, to at least partly cover said side of the tile;
subjecting the exposed side of the tile to the action of an air stream at an incidence angle tending towards zero;
kiln-firing the tile treated in this manner in accordance with a usual firing cycle.