EP 0126816 A1 19841205 - Bags, particularly multiwall bags.
Title (en)
Bags, particularly multiwall bags.
Title (de)
Säcke, insbesondere Säcke mit mehrlagigen Wänden.
Title (fr)
Sacs, en particulier sacs à parois multiples.
Publication
Application
Priority
EP 83303018 A 19830525
Abstract (en)
A multiwall bag having an interior plastic pouch (10) formed from a sealed plastic tube having a longitudinal seam (50) comprising overlapping tube margins (54, 56) sealed together by two spaced seals (60, 62) to provide a channel (66), one of the tube margins being formed with openings (58) providing communication between the interior of the tube and the channel to permit escape of air from the tube. A strip of materials (52) is disposed along the length of the channel to prevent the overlapping tube margins (54, 56) from adhering to each other between the spaced seals (60, 62).
IPC 1-7
IPC 8 full level
B65D 30/08 (2006.01); B65D 33/01 (2006.01)
CPC (source: EP)
B65D 31/04 (2013.01); B65D 33/01 (2013.01)
Citation (search report)
- [YD] US 3302859 A 19670207 - PERRY RAY P
- [Y] US 3439869 A 19690422 - SHRUM WILLIAM E, et al
- [A] DE 1536367 A1 19691211 - WINDMOELLER & HOELSCHER
- [A] GB 1016476 A 19660112 - SICEDISON SPA
- [A] US 2593328 A 19520415 - MEAKER JOHN W
Designated contracting state (EPC)
AT DE FR GB NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 83303018 A 19830525