International Paper Company

William W McFarland

Mack L Ford, Jr

Michael A Churvis

Russell E Gandy

Baxter Beavers

A corner post construction fashioned from corrugated paperboard of single or more thickness. The corner post is made from a unitary blank of corrugated paperboard, the blank being generally rectangular and provided with three parallel slit scorelines running generally longitudinally of the blank. The scorelines define four generally rectangular panels, with the two innermost panels being of substantially the same width, but with the first and second outermost panels being of respectively greater and different widths. The slit scorelines are reverse cut, with the middle coming in from one surface of the unitary blank and the outer two slit scorelines coming in from the other surface. All three scorelines extend completely through the blank, except for the outermost or facing layers of the corrugated board. After slit scoring, the two outermost panels are glued to their respective next adjacent innermost panels to form the corner post in its storage or shipping condition. For use, the panels are opened and an abutment takes place between an edge of one of the two outermost panels and the other outermost panel to automatically limit rotation to 90 degrees.

Corrugated paperboard corner post

A corrugated paperboard carton of the top lifting type and a unitary blank for forming it. The upper end of each sidewall is provided with a pair of flange panels, the latter folded upon themselves and glued together to form double thickness flanges extending around the upper rim of the carton, each positioned parallel to its respective sidewall. The free side edge of one flange panel carries a tongue received between next adjacent flange panels, the tongue glued in place. A flexible reinforcing strip is carried by one series of the pair of flange panels, the flexible strip extending from the tongue and across the flange panels. The ends of the reinforcing strip overlap, being separated by the thickness of the tongue. The carton is particularly useful in conjunction with lift trucks, the blades of such a truck being inserted between the flange panels and any corresponding sidewall for lifting the loaded carton.

Reinforced flange top lifting carton

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.

Laminated bulk bin corner structure

A hexagonal paperboard container, which comprises:

Hexagonal container

An improved method of and machine for making a bulk container. The container has a main body which is strengthened as compared to at least the container top or bottom by at least one additional material layers, these material layers comprising in combination a single face liner and attached fluting medium. The variable layer construction being accomplished by machine combination of material layers of different cross-machine dimension. The method of this variable dimension multi-layer combination encompasses a single lamination step of the several material layers to provide a strengthened bulk container blank and therefrom the improved container of this invention.

Method for making an improved variable flute container

An improved method of and machine for making a bulk container. The container has a main body which is strengthened as compared to at least the container top or bottom by at least one additional material layers, those material layers comprising in combination a single face liner and attached fluting medium. The variable layer construction being accomplished by machine combination of material layers of different cross-machine dimension. The method of this variable dimension multi-layer combination encompasses a single lamination step of the several material layers to provide a strengthened bulk container blank and therefrom the improved container of this invention.

Variable flute container

A sift-proof, shipping and dispensing container is provided. It comprises an inner container fabricated from a unitary blank and a separate outer container, also fabricated from a unitary blank. It is constructed from a rigid material such as corrugated board. The inner container comprises a bottom wall; first, second, third and fourth side walls hingedly connected to the bottom wall along score lines; pairs of primary gusset panels hingedly connecting the side edges of the first and second, second and third, third and fourth, and fourth and first side walls, wherein the primary gusset panels and the side walls are of equal height, and wherein the primary gusset panels overlie the outer surfaces of the second and fourth side walls when the container is in erected condition; top walls hingedly connected to the first and third side walls along transverse score lines parallel to the score lines connecting the first and third side walls to the bottom wall; tuck-in flaps hingedly connected to the top walls along transverse score lines; and pairs of secondary gusset panels hingedly connecting the top edges of the primary gusset panels which are connected to the first and third side walls to the side edges of the top walls. The outer container comprises: four side walls, end walls hingedly connected to opposite end edges of each of the side walls to form top and bottom walls; and a tear strip encircling the upper end of the outer container to permit separation thereof into cover and body sections.

Growing community of inventors

Wooster, OH, United States of America

William W McFarland