Madison-oslin Research Corp.

Other

Paul M Whatley

Michael W Olvey

Morgan O Ogilvie, Jr

An apparatus for coating paperboard comprising a flame treater, a heater, a coater for applying a thin coating of a water-dispersible polymer, a dryer, and a cooler with an air curtain to keep the heat confined to the hot end of the apparatus.

Paper coating apparatus

A method for coating paperboard comprising heating paperboard to a temperature sufficient to remove at least some moisture from the paperboard; applying an aqueous dispersion of at least one water-dispersible polymer to the paperboard product; heating the paperboard to at least partially cure the water-dispersible polymer; and cooling the paperboard to at least 160 degrees Fahrenheit to reduce the tackiness of the cured water-dispersible polymer.

Process for coating paperboard with a water-dispersible polyester polymer

The present invention is a force resisting corrugated assembly, and can be constructed into a pallet or dunnage support made from corrugated paperboard that minimizes adverse environmental impact, occupies little space before it is configured, and effectively saves production, storage and transportation costs. The present corrugated paperboard assembly can be shipped and stored as either one or more die-cut and scored corrugated paperboard pieces, thereby eliminating excess volume, with the pieces being readily interconnectable to form a complete pallet or dunnage support assembly. Preferably, the paperboard of the present invention further has a low moisture vapor transmission rate (MVTR), excellent glueability and recyclability. The present invention incorporates a lower and upper frame member foldably constructed from corrugated paperboard blanks. Each frame member has ribs having locking slots. The lower and upper frame members can differ in dimensions, but in a preferred form incorporate nearly identical elements, thus simplifying production of the blanks and the folding steps necessary to form the present corrugated structure. After foldably constructing each frame member, the upper frame member is rotated 90 degrees relative to the lower frame member, and placed upside down over the lower frame member. The ribs of the lower frame member lock into the locking slots of the ribs of the upper frame member, and the ribs of the upper frame member lock into the locking slots of the ribs of the lower frame member.

Growing community of inventors

Birmingham, AL, United States of America

Paul M Whatley