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US 7,226,560 B2Granted
Method for making a blow molded container
AssigneePlastipak Packaging, Inc.
InventorsRichard L. Dunlap, Edward L. Sanford, Richard C. Darr
Life of this patent
Estimating the term…
Abstract
A blow molded container (10) having a trimmed nonround opening (12) is blow molded from a preform (36) and then positioned by a positioner (50) of a nonround trimmer (16) that includes a rotary driven arm assembly (56) having a knife holder (60). A guide (66) guides the knife holder (60) in a nonround path to perform the trimming.
Claims4
A method for making a blow molded container comprising:
- holding an injection molded preform adjacent an open end thereof for blow molding to provide a container having a nonround portion;
- and
- subsequently holding the container and moving a knife assembly around the container along a guide in a nonround path to trim the container at the nonround portion thereof and provide a nonround opening.
A method for making a blow molded container comprising:
- holding an injection molded preform adjacent an open end thereof for blow molding to provide a container having a nonround portion including a cutting groove;
- subsequently holding the container and moving a knife assembly around the container along a guide in a nonround path to trim the container at the nonround portion thereof within the cutting groove thereof provide a nonround opening;
- and
- holding a scrap piece trimmed from the container.
1 more element
Dependencies are inferred from the claim text.