Self-open envelope

Abstract

A tear thread opening device disposed on a sealed fold line of an envelope or any other paper maid container. The tear thread is threaded along a chosen fold line of the envelope using traditional sewing techniques. The ends of the tear thread are lightly glued into the body of the envelope. In a second embodiment, the chosen fold line of the envelope or other paper maid container is only perforated and the tear thread is attached along the inside edge of the chosen fold line. In both embodiments ends of the thread must be lightly glued in to perforated fold line. If necessarily each end of injected into fold line tear thread could be attached to a small plastic tab, which would be located inside or outside overlapping closure flap. Grasping the tab or the corner of the envelope where the extremity of tear thread is glued, and pulling upward could easily open the envelope or any other paper maid container. This action will cause the tear thread to tear thru the fold line thereby easily opening the envelope or any paper maid container.

I claim:  
     
         1 . A tear thread opening device in combination with an body of the envelope or any paper-made container. A sewing head needle is used to sew a thread, along both the inside and out side surface of a chosen fold line one of four overlapping elements of the envelope, box, or any paper-made container. The envelope, box or any paper-maid container can then be sealed. When one end of the tear thread is pulled away and upwardly, the thread will pull against and tear the chosen fold line, thereby opening the sealed envelope.  
     
     
         2 . A tear thread opening device in combination with an envelope or any paper-maid container. A chosen fold-line of the envelope, box, or any paper-maid container is perforated. The tear thread is then attached along the inside of perforated fold line. The envelope, box or any paper-maid container can then be sealed. When one end of the thread is pulled away and upwardly, the thread will pull against and tear the perforated fold line, thereby opening the sealed envelope.