Global Patent Index - EP 0909634 A3

EP 0909634 A3 2000-12-27 - Corrugating apparatus

Title (en)

Corrugating apparatus

Title (de)

Vorrichtung zur Herstellung von Wellpappen

Title (fr)

Dispositif pour la fabrication de Carton Ondulé

Publication

EP 0909634 A3 (EN)

Application

EP 98302321 A

Priority

GB 9706336 A

Abstract (en)

[origin: GB2323609A] In a double-facer, the glued corrugations of single-faced board 10 are bonded to liner 12 using dielectric heating provided by radio frequency electrode array 34. Microwave heating may alternatively be used. For pre-heating, the running board is pressed against hotplate 31 by fluid-filled, flexible vessels 32, or by flexible matting. Dielectric heating reduces the length of heater required.

IPC 1-7 (main, further and additional classification)

B31F 1/28

IPC 8 full level (invention and additional information)

B31F 1/28 (2006.01)

CPC (invention and additional information)

B31F 1/285 (2013.01); B31F 1/2881 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

GB 2323609 A 19980930; GB 9706336 D0 19970514; EP 0909634 A2 19990421; EP 0909634 A3 20001227

INPADOC legal status


2001-03-07 [18W] WITHDRAWN

- Date of withdrawal: 20010108

2000-12-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-12-27 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI

1999-04-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

1999-04-21 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI