Back to results
US 11,072,140 B2Granted
Balanced process for extrusion of plastic corrugated sheet and subsequent converting into plastic boxes
AssigneeORBIS Corporation
InventorsWilliam F. McMahon, Donald J. Balazs
Life of this patent
Estimating the term…
Abstract
The invention is directed to a balanced process for extrusion of a plastic corrugated sheet or blanks, and subsequent converting of the blanks into plastic boxes. The process includes conveying the blanks to a plurality of forming stations for incrementally forming features on the blank needed for forming a box. The present process is performed at a slower speed than typical paper corrugated forming.
Claims15
A balanced in-line process for forming blanks for forming boxes comprising:
- extruding a blank of corrugated plastic material having a first outer layer, a second outer layer and a plurality of flutes extending between the first outer layer and the second outer layer;
- sequencing the blank through a plurality of forming stations;
- forming a first body fold line separating a first box side wall and a second box side wall in the blank at a first forming station;
- and,
- forming a score line to create a first flap in the blank at a second forming station wherein the first fold line is formed by the step of joining the first outer layer of the blank to the second outer layer of the blank at the first fold line.
2 more elements
Dependencies are inferred from the claim text.