EP 1340695 A1 20030903 - Unidirectional valve for flexible packages
Title (en)
Unidirectional valve for flexible packages
Title (de)
Unidirektionales Ventil für flexible Verpackungen
Title (fr)
Soupape unidirectionelle pour emballages flexibles
Publication
Application
Priority
EP 02251232 A 20020222
Abstract (en)
This unidirectional valve for flexible packages, preferably made with laminar plastic materials is a valve made of sheet (3) attached to the external face of the package (2) with a window positioned to coincide with an orifice (5) in it, superimposed by another sheet (4) that covers its window (6) and is attached to the first (illegible) of two of its edges, with the transversal edges unattached, and forming a channel for gases to escape, when the internal overpressure separates the exterior sheet from the perforated wall, which in (the) passive position is closed by said sheet (4) under external atmospheric pressure, guaranteeing the escape of gases generated by the product and preventing the destructive entry of outside air. <IMAGE>
IPC 1-7
IPC 8 full level
B65D 77/22 (2006.01)
CPC (source: EP)
B65D 77/225 (2013.01); B65D 2205/00 (2013.01)
Citation (search report)
- [X] US 5263777 A 19931123 - DOMKE KLAUS [DE]
- [X] DE 4435492 A1 19960411 - BOSCH GMBH ROBERT [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 02251232 A 20020222