Vertical bagger using web-alignment score
AssigneePregis LLC
InventorThomas D. Wetsch
Life of this patent
Estimating the term…
Abstract
A web for use in forming envelopes has a score line extending along the web in a longitudinal direction of the web and configured to locally reduce a resistance of the web to bending about an axis coinciding with the score line. The decreased bending resistance helps to ensure that longitudinal edge regions of the web are aligned when the longitudinal edge regions are sealed to each other during formation of the envelope on automated bagging machine.
Claims20
A system for forming envelopes, comprising:
- a web having a score line extending along the web in a longitudinal direction of the web and configured to reduce a resistance of the web to bending about an axis coinciding with the score line;
- and
- a bagging machine, comprising:
- a folder including a former configured to fold the web as the web is drawn over the folder;
- a web guide located downstream of the former and having opposing guide surfaces configured to urge longitudinal edges of the envelope toward each other to further fold the web as the web passes through the web guide so that a first portion of the web overlaps a second portion of the web to form an envelope pocket of an envelope, and
- a sealing device having two opposing sealing surfaces configured to apply a sealing pressure to a sealing area on the web to form a seal between the first and second portions of the web.
A bagging machine for forming envelopes from a web having a score line extending along the web in a longitudinal direction of the web and configured to reduce a resistance of the web to bending about an axis coinciding with the score line, the bagging machine comprising:
- a folder including a former, and a forming guide located on the former and configured to engage the web, the former and the forming guide configured to fold the web as the web is drawn over the former;
- a web guide located downstream of the former and having opposing guide surfaces configured to urge longitudinal edges of the envelope toward each other to further fold the web as the web passes through the web guide so that a first portion of the web overlaps a second portion of the web to form an envelope pocket of an envelope;
- and
- a sealing device having two opposing sealing surfaces configured to apply a sealing pressure to a sealing area on the web to form a longitudinal seal and a transverse seal between the first and second portions of the web.
A web configured for use with a bagging machine, the web including a score line extending along the web in a longitudinal direction of the web and configured to reduce a resistance of the web to bending about an axis coinciding with the score line.
Dependencies are inferred from the claim text.