Reusable envelope structures and methods

1. A reusable envelope, the envelope comprising:

an envelope body having a width; and

a reusable sealing flap, the sealing flap comprising at least:

a first flap portion proximal to the envelope body and extending along the envelope body for a length;

a second flap portion extending from the first flap portion distal from the envelope body, and extending along a length of the first portion that is less than the length of the first portion;

a side edge comprising an arcuate contour, the arcuate contour comprising a first edge portion at least partially corresponding with the first flap portion and intersecting a second edge portion at least partially corresponding with the second flap portion at a vertex defining an angular turning point between said arcuate contour and said second edge portion and thereby defining an angular indentation along said side edge;

a plurality of adhesive regions formed on the sealing flap each spaced apart from a boundary along which the first portion of the sealing flap can be separated from the second portion of the sealing flap, the boundary comprising a tear off portion and a bridge portion, the tear off portion extending partially across the sealing flap so the tear off portion comprises an end spaced inwardly from the side edge of the sealing flap and spaced from the intersection of the first and second edge portions wherein the bridge portion comprises the region between the inwardly spaced end of the tear off portion and the angular indentation so the bridge portion at least partially connects the first and second portions of the reusable sealing flap and so the bridge portion is structurally capable of at least partially maintaining the connection between the first and second portions of the reusable sealing flap after the tear off portion is at least partially removed from the reusable sealing flap while also providing a narrowed region that facilitates severing of said second portion from said first portion through said narrowed region; and

wherein at least one adhesive region of the sealing flap can be used to seal the envelope a first time so the second portion of the sealing flap can be separated from the first portion of the sealing flap to open the envelope and the first portion of the envelope can be used to close the envelope a second time.

2. The envelope of claim 1 , wherein the boundary along which the first portion can be separated from the second portion comprises a first line of weakness spaced apart from at least one additional line of weakness.

3. The envelope of claim 2 , wherein the first line weakness extends along the sealing flap for a length.

4. The envelope of claim 2 , wherein the second line weakness extends along the sealing flap for a length.

5. The envelope of claim 1 , wherein the end of the tear off portion comprises a tab for grasping the tear off portion.

6. The envelope of claim 1 , wherein the boundary along which the first portion can be separated from the second portion comprises a tear off portion having a second end that intersects a side of the sealing flap distal to said first end.

7. The envelope of claim 1 , wherein the sealing flap further comprises a second side edge comprising an arcuate contour, the arcuate contour of the second side edge comprising a first edge portion at least partially corresponding with the first flap portion and intersecting a second edge portion at least partially corresponding with the second flap portion.

8. A method for reusing an envelope, the method comprising:

providing an envelope comprising an envelope body and a reusable sealing flap, the sealing flap comprising at least a first flap portion proximal to the envelope body and extending along the envelope body for a length, a second flap portion extending from the first flap portion, a side edge comprising an arcuate contour comprising a first edge portion at least partially corresponding with the first flap portion and intersecting a second edge portion at least partially corresponding with the second flap portion at a vertex defining an angular turning point between said arcuate contour and said second edge portion and thereby defining an angular indentation along said side edge, a bridge portion at least partially connecting the first and second flap portions proximal to said vertex and defining a tear region to facilitate separation of said first flap portion from said second flap portion, and a plurality of adhesive regions formed on the sealing flap each spaced apart from a tear off portion along which the first flap portion can be separated from the second flap portion of the sealing flap, the tear off portion having an end spaced inwardly from the side edge of the sealing flap and spaced from said vertex;

attaching the second flap portion of the sealing flap to the envelope body to close the envelope a first time;

opening the envelope by separating the first flap portion of the sealing flap from the second flap portion of the sealing flap by removing the tear off portion while the second flap portion of the sealing flap is attached to the envelope body;

separating the first flap portion of the sealing flap from the second flap portion of the sealing flap by tearing the bridge portion after the tear off portion has been removed from the sealing flap; and

attaching the first flap portion of the sealing flap to the envelope body to close the envelope a second time.

9. The envelope of claim 8 , wherein the sealing flap further comprises a second side edge comprising an arcuate contour, the arcuate contour of the second side edge comprising a first edge portion at least partially corresponding with the first flap portion and intersecting a second edge portion at least partially corresponding with the second flap portion.

10. A reusable envelope comprising:

an envelope body having a width; and

a first flap portion proximal to the envelope body and extending along the envelope body for a length;

a second flap portion extending from the first flap portion and distal from the envelope body, and extending along a length of the first portion that is less than the length of the first portion;

first and second side edges, the second side edge comprising an arcuate contour comprising a first edge portion at least partially corresponding with the first flap portion and intersecting a second edge portion at least partially colTesponding with the second flap portion at a vertex defining an angular turning point between said arcuate contour and said second edge portion and thereby defining an angular indentation adjacent said vertex;

a tear off portion positioned between the first and second flap portions and at least partially removable to at least partially separate the first and second flap portions during opening of the reusable envelope a first time, the tear off portion extending from the first side edge of the sealing flap across a portion of the sealing flap and ending before intersecting the second side edge of the sealing flap thereby at least partially defining an end of the tear off portion spaced inwardly from the second side edge of the sealing flap and spaced from the vertex wherein the region of the sealing flap between the end of the tear off portion and the second side edge of the sealing flap is configured to protect the sealing flap against unintentional opening during processing of the reusable envelope in automated mail processing equipment, said angular indentation providing a narrowed tear region through which said first and second flap portions may be completely separated subsequent to removal of said tear off portion; and

first and second adhesive regions formed on the sealing flap, the first adhesive region provided on the first flap portion and spaced apart from the tear off portion, the second adhesive region provided on the second flap portion and spaced apart from the tear off portion.

11. The envelope of claim 10 , wherein the first side edge comprising an arcuate contour comprising a first edge portion at least partially corresponding with the first flap portion and intersecting a second edge portion at least partially corresponding with the second flap portion.