(19)
(11) EP 0 909 634 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.12.2000 Bulletin 2000/52

(43) Date of publication A2:
21.04.1999 Bulletin 1999/16

(21) Application number: 98302321.9

(22) Date of filing: 25.03.1998
(51) International Patent Classification (IPC)7: B31F 1/28
(84) Designated Contracting States:
AT BE CH 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: 26.03.1997 GB 9706336

(71) Applicant: SCM CONTAINER MACHINERY LIMITED
Ellesmere Port, South Wirral L66 1ST (GB)

(72) Inventors:
  • Reynolds Gordon Stuart
    High Peak, Derbyshire. SK23 7NS (GB)
  • Ellis David
    Mold,Flintshire. CH7 6DU (GB)
  • Strutt Ivan
    Vicars Cross, Chester. CH3 5HD (GB)
  • Green Michael
    Lockerbie, Dumfrieshire. DG11 1RP (GB)

(74) Representative: Ajello, Michael John 
Urquhart-Dykes & Lord Greg's Buildings 1 Booth Street
Manchester M2 4DU
Manchester M2 4DU (GB)

   


(54) Corrugating apparatus


(57) Corrugating apparatus in which a continuous single faced board (10) consisting of a corrugated sheet glued on one face to a further flat sheet and with glue applied to the exposed tips on the opposite face of the board is to be brought together while continuously advancing through the apparatus, with a second flat sheet (12) to be adhered to the exposed tips, the apparatus comprising transport means (C) to advance the corrugated board and the second flat sheet simultaneously in the same direction through the apparatus and a dielectric heating means (B) to cure the glue to form a bond between the board and the sheet, initial bonding preferably being provided by a pre-heating section (A) in which the board travels across a hotplate surface (31), the board being held uniformly and in contact therewith by a series of fluid filled flexible vessels (32). Radio frequency generated in the heating section (B) considerably reduces the length of or obviates the need for a pre-heating section (A).






Search report