Global Patent Index - EP 1099540 A1

EP 1099540 A1 2001-05-16 - Method and apparatus for producing corrugated paperboard with at least four layers

Title (en)

Method and apparatus for producing corrugated paperboard with at least four layers

Title (de)

Verfahren und Anlage zur Herstellung von mindestens 4-lagiger Wellpappe

Title (fr)

Méthode et appareil pour la production de carton ondulé comprenant au moins quatre couches

Publication

EP 1099540 A1 (DE)

Application

EP 00123965 A

Priority

DE 19954301 A

Abstract (en)

The method involves transporting a first corrugated sheet laminated on one side with the first smooth layer and a second corrugated sheet laminated with an intermediate smooth layer. The spacings are measured, and the second sheet is extended to equalize the spacings. The relative corrugation positions are detected. The sheets are displaced to align the peaks and troughs, followed by gluing the peaks of the first sheet and joining and pressing the sheets together. The method involves transporting a first corrugated sheet laminated on one side with the first smooth layer (7) in a production direction and transporting a second corrugated sheet laminated on one side with an intermediate smooth layer (8) facing the first corrugated sheet, measuring the spacings of the corrugated sheets, extending the second sheet depending on the measurements to equalize the spacings, detecting the relative corrugation positions, displacing the sheets relative to each other to align the peaks of the first with the troughs of the second, gluing the peaks of the first sheet and joining and pressing the sheets together. Independent claims are also included for a system for implementing the method.

Abstract (de)

Auf einer Anlage zur Herstellung von mindestens 4-lagiger Wellpappe werden zwei einseitig kaschierte Wellpappebahnen (3, 4) zusammengeführt. Die gewellte Bahn (6) der unteren Wellpappebahn (4) weist eine Teilung auf, die kleiner ist als die der gewellten Bahn (5) der oberen Wellpappebahn (3). Die Deckbahn (8) der unteren Wellpappebahn (4) ist aus besonders gut dehnbarem Material. Die untere Wellpappebahn (4) wird derart gedehnt, daß die Teilung ihrer gewellten Bahn (6) gleich der Teilung der gewellten Bahn (5) der oberen Wellpappebahn (3) ist. Danach werden die beiden Wellpappebahnen (3, 4) derart gegeneinander verschoben, daß die Wellenköpfe (28) der oberen Wellpappebahn (3) mit den Wellentälern der unteren Wellpappebahn (4) zur Deckung kommen. <IMAGE>

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

B31F 1/28

IPC 8 full level (invention and additional information)

B31F 1/24 (2006.01); B31F 1/28 (2006.01)

CPC (invention and additional information)

B31F 1/2831 (2013.01); B31F 1/2813 (2013.01)

Citation (search report)

Designated contracting state (EPC)

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

EPO simple patent family

EP 1099540 A1 20010516; DE 19954301 A1 20010517; JP 2001187428 A 20010710

INPADOC legal status


2002-11-13 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20011117

2002-03-21 [REG DE 8566] DESIGNATED COUNTRY DE NOT LONGER VALID

2002-02-13 [AKX] PAYMENT OF DESIGNATION FEES

2001-05-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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

2001-05-16 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

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