EP 0447209 B1 19930714 - TEAR-OPEN MAILING ENVELOPE
Title (en)
TEAR-OPEN MAILING ENVELOPE
Publication
Application
Priority
US 49344190 A 19900314
Abstract (en)
[origin: EP0447209A1] A mailing envelope (10) of tear-resistant sheetstock can be easily torn open by forming a pair of closely spaced parallel cuts (16,17) through the sheetstock and bonding over the cuts a length of reinforcing tape (18) that has good resistance to impact, good longitudinal tensile strength, and readily tears longitudinally while being highly resistant to transverse tearing. When the reinforcing tape is bonded to an inner surface of the envelope and is cut at one end coincident with the cuts in the envelope, that end of the tape serves as a pull tab by which a strip of the tape can be pulled through the envelope to open it between said parallel cuts. <IMAGE>
IPC 1-7
IPC 8 full level
B65D 27/38 (2006.01)
CPC (source: EP)
B65D 27/38 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0447209 A1 19910918; EP 0447209 B1 19930714; AU 645530 B2 19940120; AU 7293991 A 19910919; CA 2037964 A1 19910915; DE 69100165 D1 19930819; DE 69100165 T2 19940105; JP H05319441 A 19931203
DOCDB simple family (application)
EP 91302114 A 19910313; AU 7293991 A 19910313; CA 2037964 A 19910311; DE 69100165 T 19910313; JP 4974791 A 19910314