Abstract: A method for forming an extrusion coated paperboard including the steps of providing an uncoated paperboard, providing at least one extrusion device and at least one moisture application device on a single extrusion process line, extruding a material onto a first side of the paperboard with the extrusion device and applying a moisture composition onto a second side of the paperboard, opposite of the first side, with the moisture application device such that an equilibrium moisture content of the extrusion coated paperboard is about 6 to about 15 percent based on total extrusion coated paperboard weight.

Abstract: An extrusion coated paperboard is provided and includes a paperboard, an extruded material adhered to a first side of said paperboard and a moisture composition applied in-line during the extrusion process to a second side, opposite of said first side, of said paperboard such that a moisture content of said extrusion coated paperboard has an equilibrium moisture content range of about 6 to about 15 percent by weight based on total extrusion coated paperboard weight.

Abstract: A corrugated structure having a first flat layer, a first corrugated layer secured to the first flat layer, a second flat layer having a first side and a second side, wherein the first side is secured to the first corrugated layer on a side opposite of the first flat layer, a coating layer secured to the second side of the second flat layer, wherein the coating layer has a melting temperature of at least about 450 degrees Fahrenheit and chloroform-soluble extractives of at most about 0.5 milligrams per square inch.