EP 0309499 A1 19890405 - TWIN-CHAMBER COMPRESSED-GAS PACK AND PROCESS FOR MANUFACTURE THEREOF.
Title (en)
TWIN-CHAMBER COMPRESSED-GAS PACK AND PROCESS FOR MANUFACTURE THEREOF.
Title (de)
ZWEIKAMMERDRUCKGASPACKUNG UND VERFAHREN ZU DEREN HERSTELLUNG.
Title (fr)
GARNITURE POUR RECIPIENT A DEUX CHAMBRES ET A GAZ PROPULSEUR ET PROCEDE POUR SA FABRICATION.
Publication
Application
Priority
CH 137087 A 19870409
Abstract (en)
[origin: WO8807964A1] In twin-chamber compressed gas packs, the collar (21) of a diaphragm (20) which invaginates during motion in the container is secured with its opening region in a fold or in the upper part of the container, in order to provide the required sealing between product chamber and working fluid chamber. The disadvantage of packs of this type is that the use of multipart containers is mandatory and/or that a support ring incorporated in the diaphragm produces a frictional force which may be large enough to prevent ejection of the feed material because of an insufficient pressure differential between the chambers. These drawbacks are overcome by securing the entire region of the collar (21) to the internal wall of the casing (10).
Abstract (fr)
Le col (21) d'un soufflet (20) se retournant à l'intérieur du récipient pendant le mouvement est fixé par sa partie ouverte dans un pli ou dans la partie supérieure du récipient pour pouvoir garantir une étanchéité suffisante entre la chambre contenant le gaz propulseur et la chambre contenant le produit. De telles garnitures obligent à utiliser des récipients en plusieurs parties et/ou une bague d'appui disposée dans le soufflet et qui exerce un frottement tel que la pression différentielle entre les deux chambres reste maintenue. En fixant le col (21) sur toute la périphérie de la surface intérieure du récipient, on peut éviter ces désavantages.
IPC 1-7
IPC 8 full level
B65D 83/38 (2006.01); B21D 51/18 (2006.01); B21D 51/26 (2006.01); B65D 83/14 (2006.01); B65D 83/62 (2006.01)
IPC 8 main group level
B65D (2006.01)
CPC (source: EP KR US)
B65D 83/14 (2013.01 - KR); B65D 83/62 (2013.01 - EP US)
Citation (search report)
See references of WO 8807964A1
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8807964 A1 19881020; AT E90061 T1 19930615; AU 1422088 A 19881104; AU 611139 B2 19910606; CA 1330658 C 19940712; DE 3881462 D1 19930708; DK 170699 B1 19951211; DK 683288 A 19881208; DK 683288 D0 19881208; EP 0309499 A1 19890405; EP 0309499 B1 19930602; ES 2008441 A6 19890716; FI 885724 A0 19881209; FI 885724 A 19881209; FI 91736 B 19940429; FI 91736 C 19940810; JP 2589794 B2 19970312; JP H01503134 A 19891026; KR 890700527 A 19890425; KR 960007218 B1 19960529; NO 171839 B 19930201; NO 171839 C 19930512; NO 885495 D0 19881209; NO 885495 L 19890207; US 4951847 A 19900828; US 5037367 A 19910806
DOCDB simple family (application)
CH 8800067 W 19880325; AT 88902380 T 19880325; AU 1422088 A 19880325; CA 563297 A 19880405; DE 3881462 T 19880325; DK 683288 A 19881208; EP 88902380 A 19880325; ES 8801067 A 19880408; FI 885724 A 19881209; JP 50238888 A 19880325; KR 880701608 A 19881206; NO 885495 A 19881209; US 29725888 A 19881205; US 52601990 A 19900521