EP 0098276 B1 19870909 - METHOD AND DEVICE FOR MANUFACTURING AN AUTOMATIC CLOSURE VALVE BAG
Title (en)
METHOD AND DEVICE FOR MANUFACTURING AN AUTOMATIC CLOSURE VALVE BAG
Publication
Application
Priority
JP 21429481 A 19811229
Abstract (en)
[origin: WO8302252A1] Device and method for manufacturing a valve bag with one or a plurality of layers, of paper or sheet, with an automatic closure valve, comprising first the sticking of an inner paper band (1) and a valve sleeve (24) of paper and having the desired size. The valve sleeve (24) is produced in line in an appropriate device (22, 8, 21, 9, 10, 11, 12, 13) arranged directly above a guiding and pressing station (13, 18) and conveyed, in synchronism with a bag manufacturing machine (1, 4, B, 3, 8, A, 2) to the pressing station (13, 18) to be adhered on the inner face of the paper web (1). Finally, the paper band (1) is conveyed and adhered with the outer layer or layers forming a multilayer bag.
IPC 1-7
IPC 8 full level
B31B 1/84 (2006.01); B31B 19/84 (2006.01)
CPC (source: EP US)
B31B 70/00 (2017.07 - EP US); B31B 70/85 (2017.07 - EP US); B31B 2160/10 (2017.07 - EP US); Y10S 493/929 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB LI LU NL SE
DOCDB simple family (publication)
WO 8302252 A1 19830707; DE 3277181 D1 19871015; EP 0098276 A1 19840118; EP 0098276 B1 19870909; JP H0152176 B2 19891108; JP S58116142 A 19830711; US 4725262 A 19880216
DOCDB simple family (application)
EP 8200277 W 19821229; DE 3277181 T 19821229; EP 83900188 A 19821229; JP 21429481 A 19811229; US 90199786 A 19860828