Envelopes – wrappers – and paperboard boxes – Wrapper – Letter sheets
Patent
1998-04-30
2000-10-17
Garbe, Stephen P.
Envelopes, wrappers, and paperboard boxes
Wrapper
Letter sheets
462 6, B65D 2716
Patent
active
061318027
ABSTRACT:
A pressure seal business form including a sheet having a front and a back, top edge, bottom edge, first and second longitudinal edges, at least two panels separated by at least one fold line, longitudinal lines of weakness parallel to the first and second longitudinal edges forming a first and second longitudinal margin portion, horizontal patterns of pressure seal cohesive, and a longitudinal pattern of cohesive positioned in the first and second margin portions defined by at least one individual cohesive configuration. Each individual configuration of cohesive being defined by a first line AB including end points A and B and a second line CD having end points C and D. Line AB and CD are parallel to each other and to the longitudinal edges of the sheet. A third line BD having end points B and D and a fourth line AC having end points A and C. Lines BD and AC are parallel to each other. The angle ABD between lines AB and BD is less than 90.degree.. When the panels of the sheet are folded about the fold lines, the individual configurations defining the longitudinal patterns of cohesive conform and the horizontal patterns of cohesive conform. A pressure seal form is then created by applying external pressure so that the pressure seal cohesive on the conforming patterns adhere and a full perimeter seal is created.
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