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US 11,760,530 B2Granted
Process for forming plastic corrugated container with ultrasonically formed score lines
AssigneeORBIS Corporation
InventorsWilliam F. McMahon, Donald J. Balazs
Life of this patent
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Abstract
A corrugated plastic box and a method for manufacturing a corrugated plastic box from a blank are provided. The method includes the steps of forming rounded edge seals on the perimeter edges of the blank, pre-sealing portions of the blank to form a plurality of areas in which major and minor flap slots and a glue tab are desired, ultrasonically scoring the blank to form a plurality of flap score lines, and cutting the blank through the plurality of pre-sealed flap slots and glue tab, leaving a sealed edge.
Claims10
A process for forming a plastic corrugated blank for a box comprising the steps of:
- forming a rectangular sheet of plastic material having a first outer planar plastic layer, a second outer planar plastic layer spaced from the first outer planar layer and a plurality of plastic spaced apart parallel flutes between the first outer planar layer and the second outer planar layer, the rectangular sheet having a first end and an opposing second end and a first edge and an opposing second edge;
- sealing a first edge of the sheet across a first end of the plurality of flutes and sealing a second edge of the sheet across a second end of the plurality of flutes;
- welding a first portion of the first outer planar layer, second outer planar layer and plurality of flutes into a first flattened rectangular segment extending perpendicularly from the first sealed edge partway toward the second sealed edge of the rectangular sheet at a location for subsequent forming of a slot between a first flap and a second flap of the box.
Dependencies are inferred from the claim text.