Paper products and methods and systems for manufacturing such products
AssigneeXyleco, Inc.
InventorMarshall Medoff
Life of this patent
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Abstract
Methods of producing cellulosic or lignocellulosic materials for use in papermaking include treating a cellulosic or lignocellulosic dry feedstock having a first average molecular weight with ionizing radiation, and controlling the dose of ionizing radiation such that the average molecular weight of the feedstock is reduced to a predetermined level. A method of producing an irradiated paper product includes treating a paper product including a first carbohydrate-containing material having a first molecular weight with ionizing radiation, and controlling the dose of ionizing radiation so as to provide an irradiated paper product with a second carbohydrate-containing material having a second molecular weight higher than the first molecular weight. Pulp and paper products are produced.
Claims7
A method of making an irradiated paper product, the method comprising
- treating a paper product comprising a carbohydrate-containing material with from about 0.25 to about 10 MRad of ionizing radiation having an energy of from about 0.25 to 7.5 MeV, without the addition of cross-linking additives, so as to self-crosslink the carbohydrate-containing material and thereby increase the molecular weight of the carbohydrate-containing material, providing an irradiated paper product.
Dependencies are inferred from the claim text.