Method and apparatus for lining containers
AssigneeHelmut E. W. Masch
InventorsHugh B. Morse, Robert B. Johnson, Helmut E. W. Masch
Life of this patent
Estimating the term…
Abstract
A bag-type liner is applied interiorly of a container, such as a corrugated carton or box, by inserting an open end of the liner over an open end of the container and thereafter creating a vacuum within the container and liner to simultaneously draw the liner within the container. In a first apparatus embodiment of this invention, the vacuum is created by moving a partially opened bottom of the container over a vacuum opening formed in the platen. In a second apparatus embodiment of this invention, a pair of vacuum plenums are movably mounted adjacent to sides and upper portions of the container to draw the vacuum over and between upper closure flaps connected to the container.
Claims18
A method for applying a bag-type liner interiorly of a container comprising the steps of
- inserting an open end of said liner over an open end of said container, and
- creating a pressure within said container from a top portion thereof and within said liner which is less than ambient pressure exteriorly thereof and simultaneously drawing said liner within said container.
A method for applying a bag-type liner interiorly of a container comprising a pair of sidewalls and a pair of endwalls and a closure flap connected to an upper end of each of said sidewalls and endwalls, comprising the steps of
- positioning said closure flaps in upstanding relationship on said container,
- inserting an open end of said liner in enveloping relationship exteriorly over said closure flaps, and
- creating a pressure within said container and said liner which is less than ambient pressure exteriorly thereof and simultaneously drawing said liner within said container and over interior surfaces of said closure flaps while maintaining open end portions of said liner exteriorly of said closure flaps.
An apparatus for applying a bag-type liner interiorly of a container comprising
- first means for supporting said container, and
- second means movably mounted adjacent to said first means for movement between a lowered inoperative position and a raised operative position adjacent to a top portion of said container for creating a pressure within said container and said liner which is less than ambient pressure exteriorly thereof whereby said liner will be drawn into said container.
The apparatus of claim 12 wherein said plenum is generally U-shaped in cross section.
Dependencies are inferred from the claim text.