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US 2005/0067368 A1Published application
Method and apparatus for trimming containers
AssigneePlastipak Packaging, Inc.
InventorRichard Darr
Life of this patent
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Abstract
Method and apparatus for trimming a container having an open end wherein the container is held during the trimming operation, including a multi-station assembly for holding the container to be trimmed stationary during trimming, ejecting the trimmed portion and ejecting the trimmed container.
Claims27
1) A method for trimming a plastic container having an open end, which comprises:
- providing a multi-station assembly for holding a container during trimming, wherein said assembly includes a plurality of spaced stations and wherein said container traverses stations of said multi-station assembly for operating stages;
- moving the container to be trimmed onto said multi-station assembly at a first operating stage;
- moving a knife into engagement with the container to be trimmed at a second operating stage;
- trimming said container by said knife at a third operating stage, with said container held stationary during trimming;
- ejecting the trimmed portion at a fourth operating stage;
- and ejecting the trimmed container at a fifth operating stage.
3 more elements
11) An apparatus for trimming a plastic container having an open end, which comprises:
- a multi-station assembly for holding a container during trimming wherein said assembly includes a plurality of spaced stations and wherein said container traverses stations of said multi-station assembly for operating stages;
- inlet means to move the container to be trimmed onto said multi-station assembly at a first operating stage;
- a knife operative to trim said container;
- means to move said knife into engagement with said container to be trimmed at a second operating stage;
- means to move said knife around said container to be trimmed to trim said container at a third operating stage;
- means to hold the container stationary during trimming;
- means to eject the trimmed portion at a fourth operating stage;
- and means to eject the trimmed container at a fifth operating stage.
5 more elements
20) An intermediate plastic container for trimming into a final, trimmed container, which comprises:
- a lower portion having a base and sidewall;
- an intermediate finish portion above the lower portion;
- an upper portion to be trimmed above the intermediate finish portion, said upper portion having an open end;
- wherein the outer diameter of the upper portion is no greater than the outer diameter of the intermediate finish portion, and including a groove between the upper portion and the intermediate finish portion which defines the area to be trimmed.
1 more element
Dependencies are inferred from the claim text.