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US 6,280,572 B1Granted
Method of producing dimensionally stable paper and paperboard products
AssigneeInternational Paper Company
InventorsYan C. Huang, Murray Bruce Lyne, Clifford Kent Hatcher, Gurudatta D. Nadkarni
Life of this patent
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Abstract
A method of producing dimensionally stable paper and/or paperboard products by treating a hygroreactive cellulosic fiber matrix with a hydrophobic sizing agent solution; and drying the treated fibers using heat and/or pressure so that the hydrophobic sizing agent penetrates the fiber matrix making it hydrophobic.
Claims8
A method of producing dimensionally stable paper and/or paperboard products comprising:
- treating a hygroreactive cellulosic fiber matrix with a hydrophobic agent comprising an aqueous solution of hydrophobes;
- and
- drying the treated fiber matrix under conditions including pressures from about 200 to about 400 psi and temperatures from about 300 to about 400° F. so that said hydrophobes penetrate into said fiber matrix making it hydrophobic.
Dependencies are inferred from the claim text.