EP 3894204 A1 20211020 - METHOD AND MACHINE FOR FORMING FLEXIBLE BAGS WITH SPECIAL BOTTOM
Title (en)
METHOD AND MACHINE FOR FORMING FLEXIBLE BAGS WITH SPECIAL BOTTOM
Title (de)
VERFAHREN UND MASCHINE ZUR FORMUNG VON FLEXIBLEN BEUTELN MIT SPEZIALBODEN
Title (fr)
PROCÉDÉ ET MACHINE DE FORMATION DE SACS FLEXIBLES À FOND SPÉCIAL
Publication
Application
Priority
- FR 1872808 A 20181212
- EP 2019084737 W 20191211
Abstract (en)
[origin: WO2020120616A1] A flexible bag (2) comprises a first wall (21) and a second wall (22) superimposed on the first wall (21), the walls (21, 22) being connected together along longitudinal edges (53) by two bellows (24). According to a method for forming the bag (2), successively: - closing the bag (2) by a flap (25) originating from one of the walls (21) and held on the other wall (22) in order to form a closed end (20) of the bag (2), - grasping, at a predetermined distance from the closed end (20) of the bag (2), the first wall (21) by lower clamps (41) and the second wall (22) by upper clamps (51) and moving apart the walls in order to form a rib (27) on the bellows (24), - releasing of the second wall (22) by the upper clamps (51) and folding down (25), using a reel (6), the closed end (20) on the second wall (22), thus producing a bottom (29). The invention also concerns a machine implementing said method.
IPC 8 full level
B31B 70/00 (2017.01); B31B 70/04 (2017.01); B31B 70/52 (2017.01)
CPC (source: EP US)
B31B 70/003 (2017.08 - EP US); B31B 70/04 (2017.08 - EP US); B31B 70/52 (2017.08 - EP US); B31B 2150/0016 (2017.08 - EP US); B31B 2155/003 (2017.08 - EP); B31B 2160/20 (2017.08 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020120616 A1 20200618; EP 3894204 A1 20211020; FR 3089860 A1 20200619; FR 3089860 B1 20201204; US 11833775 B2 20231205; US 2022055333 A1 20220224
DOCDB simple family (application)
EP 2019084737 W 20191211; EP 19817711 A 20191211; FR 1872808 A 20181212; US 201917413220 A 20191211