The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 1987
Filed:
Nov. 20, 1986
William W McFarland, Maryville, SC (US);
Russell E Gandy, Georgetown, SC (US);
Michael A Churvis, Murfreesboro, TN (US);
International Paper Company, Purchase, NY (US);
Abstract
A corner fold structure for a paperboard bin. Large bulk bins formed of layers of corrugated paperboard laminated together, often are manufactured with a pair of 180 degree folds, the folds permitting shipment of the bins in a collapsed condition prior to (individually) erecting them. After erection, at least one of the layers or plys of corrugated paperboard, at or adjacent the original 180 degree fold, now being a 90 degree fold, is often distorted, the fold sometimes bulging at the outer portion of the outermost ply or layer. According to this invention, an elongated zone of adhesive is provided between the outermost and the next layer of corrugated paperboard, in combination with score lines adjacent to and parallel with the line of adhesive. This line of adhesive is substantially parallel with the fold line or axis of the 180 degree fold. By such adhering together of the outermost and next layer or ply along this zone, the final 90 degree fold exhibits substantial uniformity therealong. This results in both improved appearance and strength of the bulk bin.