Heat sealer
AssigneePregis Innovative Packaging LLC
InventorsThomas D. Wetsch, Paul F. Ostwald, William James Watts
Life of this patent
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Abstract
A protective packaging formation device is provided herein. The device includes an inflation assembly having a fluid conduit that directs fluid between overlapping plies of a polymeric web. The device also includes a driving mechanism that drives the film in a downstream direction. The device also includes a sealing mechanism that includes a thin film heater that heats the plies to create a longitudinal seal that seals the plies of film together. The driving mechanism drives the web such that the web slides across the heating assembly in a downstream direction to trap fluid between the plies.
Claims20
A protective packaging formation device, comprising:
- an inflation assembly having a fluid conduit that directs fluid between first and second overlapping plies of a polymeric web;
- a driving mechanism that drives the film in a downstream direction;
- and
- a sealing mechanism that includes a thin film heater that heats the plies to create a longitudinal seal that seals the first and second plies of film together, trapping the fluid therebetween as the driving mechanism drives the web such that the web slides across the heating assembly in a downstream direction.
A protective packaging formation device, comprising:
- an inflation assembly having a fluid conduit that directs fluid between first and second overlapping plies of a polymeric web;
- a driving mechanism that drives the film in a downstream direction;
- and
- a sealing mechanism that includes a heating element that heats the plies to create a longitudinal seal that seals the first and second plies of film together, trapping the fluid therebetween, as the driving mechanism drives the web such that the web slides across the heating assembly in a downstream direction, wherein the heating element includes a spring tensioning mechanism that retains tension in the heating element during thermal expansion.
Dependencies are inferred from the claim text.