EP 0499783 B1 19950405 - Overpressure valve for packages.
Title (en)
Overpressure valve for packages.
Title (de)
Überdruckventil für Verpackungsbehälter.
Title (fr)
Valve de surpression pour emballages.
Publication
Application
Priority
- DE 4104803 A 19910216
- DE 4129838 A 19910907
Abstract (en)
[origin: JPH05112375A] PURPOSE: To improve reliability of an overpressure valve including a diaphragm to discharge gas from a packed product by designing the valve in such a manner that the diaphragm is adhered to the container wall through a wedge-shaped adhesive layer, and a center area is defined at the front end side of the wedged part to close a discharge hole. CONSTITUTION: Holes 4..., like a needle-stuck hole, are bored at a flat wall 3 of an air-tight bag 2, and an overpressure valve 1 is provided at the holes 4. The overpressure valve 1 is provided with a square-shaped diaphragm 10 made of a transparent and elastic sheet material, and the diaphragm 10 is adhered to the wall 3 through strip-shaped adhesive layers 11, 12. The adhesive layers 11, 12 have two parallel edge areas 13, 14 and a no-adhesive center area 15 placed between them, and the center area 15 covers the holes 4. The adhesive layers 11, 12 are wedge-shaped and a top edge part 18 limits the no-adhesive center area 15. When overpressure occurs, the center area 15 is bent outward to release the pressure.
IPC 1-7
IPC 8 full level
B65D 77/22 (2006.01); B65D 81/26 (2006.01)
CPC (source: EP US)
B65D 77/225 (2013.01 - EP US); Y10T 137/8158 (2015.04 - EP US)
Designated contracting state (EPC)
CH DE FR IT LI SE
DOCDB simple family (publication)
EP 0499783 A1 19920826; EP 0499783 B1 19950405; DE 4129838 A1 19920820; DE 59201802 D1 19950511; JP H05112375 A 19930507; US 5263777 A 19931123; US 5326176 A 19940705
DOCDB simple family (application)
EP 92100475 A 19920114; DE 4129838 A 19910907; DE 59201802 T 19920114; JP 2791592 A 19920214; US 1885193 A 19930217; US 81973592 A 19920113