EP 1657180 B1 20071031 - Improvements on multi-ply paperbags, comprising an airtight film or equivalent, which is interposed between two paper layers
Title (en)
Improvements on multi-ply paperbags, comprising an airtight film or equivalent, which is interposed between two paper layers
Title (de)
Verbesserungen an mehrschichtige Papiersäcke mit einem luftdichten Film oder ähnliches der zwischen zwei Papierschichten angeordnet ist
Title (fr)
Perfectionnements aux sacs en papier multi-plis, comprenant un film ou similaire imperméable à l'air, interposé entre deux plis de papier
Publication
Application
Priority
FR 0411133 A 20041020
Abstract (en)
[origin: FR2876670A1] The bag has a polyethylene film (4) impermeable to air and interposed between two paper folds (2, 3). The film is folded to form a sleeve with two contactless edges spaced by an interval (5) for permitting free passage of the air for deaeration, during filling of the bag. The fold (2) has a band (6) impermeable to air to impose a path to the air such that air penetrates between the fold and the film, and evacuates towards outside.
IPC 8 full level
B65D 81/24 (2006.01); B65D 30/08 (2006.01); B65D 30/24 (2006.01)
CPC (source: EP)
B65D 31/04 (2013.01); B65D 33/01 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2876670 A1 20060421; FR 2876670 B1 20080711; AT E376966 T1 20071115; DE 602005003089 D1 20071213; DE 602005003089 T2 20080821; EP 1657180 A1 20060517; EP 1657180 B1 20071031
DOCDB simple family (application)
FR 0411133 A 20041020; AT 05291908 T 20050915; DE 602005003089 T 20050915; EP 05291908 A 20050915