(19)
(11) EP 0 645 237 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.03.1996 Bulletin 1996/12

(43) Date of publication A2:
29.03.1995 Bulletin 1995/13

(21) Application number: 94307037.5

(22) Date of filing: 27.09.1994
(51) International Patent Classification (IPC)6: B31B 1/25, B31B 1/06
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 27.09.1993 ZA 937143

(71) Applicant: Tobacco Research and Development Institute Limited
FL-9490 Vaduz (LI)

(72) Inventor:
  • Lamm, Klaus Peter
    Chantecler Cape Town (ZA)

(74) Representative: Mounteney, Simon James 
MARKS & CLERK, 57-60 Lincoln's Inn Fields
London WC2A 3LS
London WC2A 3LS (GB)


(56) References cited: : 
   
       


    (54) Creasing unit


    (57) A creasing unit (10) is disclosed for creasing a pre-cut blank (28) for a hinge lid pack cigarette box. The creasing unit comprises a four-sided turret (12) carrying first, second, third and fourth crease-forming dies (18A, 18B, 18C, 18D). Lifting plates (20) are provided on each side of the turret for feeding blanks onto the crease-forming dies. A suction inlet (32) holds the blank in position on each crease forming die. A press (22) carries a complemental crease-forming die (24) for sandwiching the blank between the respective dies so as to sequentially form creased blanks (28A, 28B, 28C, 28D). The invention extends to a method of forming a crease in a precut blank.






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