Abstract: A foaming process for converting fibrous material into a cellular foam structure includes mixing fibrous material and a solvent-based binding agent to form a mixture; saturating the mixture with a pressurized gas to form a gas-saturated mixture; expanding the gas-saturated mixture by reducing the pressure of the pressurized gas to form an expanded mixture with voids in the fibrous material; and curing the expanded mixture to set the fibrous material and drive off the solvent to provide a stable network of fibrous material having cushioning properties.

Abstract: A foaming process for converting fibrous material into a cellular foam structure includes mixing fibrous material and a solvent-based binding agent to form a mixture; saturating the mixture with a pressurized gas to form a gas-saturated mixture; expanding the gas-saturated mixture by reducing the pressure of the pressurized gas to form an expanded mixture with voids in the fibrous material; and curing the expanded mixture to set the fibrous material and drive off the solvent to provide a stable network of fibrous material having cushioning properties.

Abstract: This application provides a method of using a highly clarified and clean lignin, derived from a specific biorefinery process to make a starch foam and products of the same. The lignin can be used as a low cost filler substitute for starch and other substrates that are currently employed in foam applications. The lignin has the right mechanical, physical, thermoplastic and barrier properties to enable easy handling and to impart improved properties such as UV resistance, water resistance and other physical parameters to starch foams.