EP 0136682 A2 19850410 - Self-opening envelope.
Title (en)
Self-opening envelope.
Title (de)
Einfach zu öffnender Umschlag.
Title (fr)
Enveloppe avec système d'ouverture incorporé.
Publication
Application
Priority
CA 438171 A 19830930
Abstract (en)
An envelope is provided with a string assembly (22) disposed along the line of fold (18) of the sealable flap. The string assembly is pressed into position with a coating of a pressure adhesive, which is co-extensive with the line of fold. One envelope corner is weakened, so that pulling outwardly from this corner will tear the envelope and will open it along the string assembly, which acts as a knife edge.
IPC 1-7
IPC 8 full level
B65D 27/38 (2006.01)
CPC (source: EP)
B65D 27/38 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 84111666 A 19840928