Patent ID: 8333872

Claim:
A process of recycling wax-free corrugated boxes comprising: providing wax-free corrugated box components having improved wet strength, tensile strength, grease and water resistance properties in the absence of wax by forming a liner board consisting of at least one agent selected from the group consisting of alkyl ketene dimer, alkenyl ketene dimer, alkyl succinic anhydride and alkenyl succinic anhydride; and wood fibers; by feeding the agent, wood fibers and water to the headbox of a paper making machine and dewatering the same, wherein the agent is present in an amount of at least 7 lbs per ton of wood fiber to form the liner board; forming a corrugated box from at least one of the components; and, repulping at least the corrugated box to recycle the wood fibers therein.