Method for manufacturing self supporting containers made of paper like material

(19)

(11)

EP 0 951 990 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	03.05.2000 Bulletin 2000/18

(43)	Date of publication A2:
	27.10.1999 Bulletin 1999/43

(21)	Application number: 99107340.4

(22)	Date of filing: 21.04.1999

(51)	International Patent Classification (IPC)⁷: B31B 43/00, B31F 1/00

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

(30)

Priority:

24.04.1998 IT TO980346

(71)	Applicant: Ecopack S.p.A.
	10040 Piobesi (Torino) (IT)

(72)	Inventors:
	Ferri, Luigi 10033 Torino (IT) Ferri, Francesco 10033 Torino (IT)

(74)	Representative: Modiano, Guido, Dr.-Ing. et al
	Spandonari & Modiano S.r.l., Corso Duca degli Abruzzi, 16 10129 Torino 10129 Torino (IT)

(54)	Method for manufacturing self supporting containers made of paper like material

(57) The method for manufacturing self-supporting containers made of paper-like material comprises in succession the following operating steps:

-- the cutting, by means of a die-cutter (21), of a disk (D) from a ribbon (11) of paperlike material which is fed continuously from a storage reel (10);
-- the drawing of said disk by means of complementarily shaped mold parts (22-23) and the forming of the bottom and of the lateral wall or walls of the container, the lateral wall or walls having a perimetric flap which is in excess with respect to the depth of the finished container (30);
-- the swaging, by means of a beading ring (24), of the excess perimetric flap and the forming of a compacted circular rim (B) which is adapted to give the container (30) self-standing characteristics.