Insulated box

A method for forming an inner cavity within an insulated box, the method comprising:

• positioning a first side panel of a corrugated cardboard blank in a vertical orientation, the first side panel defining a first inner side surface and a first outer side surface, the first inner side surface at least partially defining the inner cavity;
• folding a second side panel of the corrugated cardboard blank about a first hinge to position the second side panel substantially perpendicular to the first side panel, the second side panel defining a second inner side surface and a second outer side surface, the second inner side surface further defining the inner cavity, the first hinge defined by the corrugated cardboard blank;
• folding a third side panel of the corrugated cardboard blank about a second hinge to position the third side panel substantially perpendicular to the second side panel, the third side panel defining a third inner side surface and a third outer side surface, the third inner side surface further defining the inner cavity, the second hinge defined by the corrugated cardboard blank;
• folding a fourth side panel of the corrugated cardboard blank about a third hinge to position the fourth side panel substantially perpendicular to the third side panel, the fourth side panel defining a fourth inner side surface and a fourth outer side surface, the fourth inner side surface further defining the inner cavity, the third hinge defined by the corrugated cardboard blank, a first top edge of the first side panel, a second top edge of the second side panel, a third top edge of the third side panel, and a fourth top edge of the fourth side panel defining an opening to the inner cavity;
• and
• placing a top panel of a top cover over the first top edge, the second top edge, the third top edge, and the fourth top edge to enclose the opening to the inner cavity;
• and
• wherein at least one insulation batt at least partially insulates the inner cavity, and wherein the at least one insulation batt is positioned in facing contact with the first outer side surface, the second outer side surface, the third outer side surface, and the fourth outer side surface;
• wherein the at least one insulation batt is repulpable;
• wherein the at least one insulation batt comprises a repulpable insulation material formed of a mixture of cellulose fiber and between about 2% and about 25% thermoplastic binder fiber distributed substantially randomly within the cellulose fiber;
• wherein the thermoplastic binder is adhered to the cellulose fiber;
• and
• wherein subjecting the repulpable insulation material to a repulpability test produces greater than 85% fiber yield.