EP 1053184 A1 20001122 - CLOSE SACK WITH AIR EXHAUSTION
Title (en)
CLOSE SACK WITH AIR EXHAUSTION
Title (de)
GESCHLOSSENER SACK MIT LUFTAUSTRITT
Title (fr)
SAC FERME A DEGARNISSAGE
Publication
Application
Priority
- FI 9800490 W 19980609
- FI 972664 A 19970619
Abstract (en)
[origin: WO9901353A1] The invention relates to a close sack with a tubular mantle with an air-permeable inner layer (1) of paper, outside of which a separate air-impermeable barrier layer (2) and outside of that an outer layer (3) of paper. Both ends of the mantle have a plane bottom, one of which has a filling valve (12) on its end. During the filling of the sack, air flows from the sack to the area between the inner layer (1) and the barrier layer (2) and is allowed to escape from between the layers in the bottom to the area between the side flaps (5.1, 5.2) and out from there through the ends of the bottom. The sack can have a completely intact barrier film yet air exhaustion is efficient. The bottom glueing is nevertheless as tight as possible.
IPC 1-7
IPC 8 full level
B65D 30/24 (2006.01); B65D 33/01 (2006.01)
CPC (source: EP)
B65D 31/142 (2013.01); B65D 33/01 (2013.01)
Citation (search report)
See references of WO 9901353A1
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
WO 9901353 A1 19990114; CZ 291930 B6 20030618; CZ 9904589 A3 20010815; DE 69814470 D1 20030612; DE 69814470 T2 20040318; EP 1053184 A1 20001122; EP 1053184 B1 20030507; ES 2193530 T3 20031101; FI 103269 B1 19990531; FI 103269 B 19990531; FI 972664 A0 19970619; FI 972664 A 19981220
DOCDB simple family (application)
FI 9800490 W 19980609; CZ 458999 A 19980609; DE 69814470 T 19980609; EP 98925654 A 19980609; ES 98925654 T 19980609; FI 972664 A 19970619