Tear-open mailing envelope.

摘要

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>