Paper making and fiber liberation – Processes and products – With coating after drying
Reexamination Certificate
2011-04-19
2011-04-19
Halpern, Mark (Department: 1741)
Paper making and fiber liberation
Processes and products
With coating after drying
C162S164100, C162S172000
Reexamination Certificate
active
07927458
ABSTRACT:
This invention relates to a process for preparing sized paper and paperboard which incorporates in the paper and paperboard at the size press size a composition comprising one or more “hydrophobic polymers” wherein hydrophobic polymers, the amount of such polymers and the weight ratio of starch to such polymer in the composition are selected such that the paper and paper board exhibits a Cobb Value equal to or less than about 25 and to a sized paper or paperboard web formed by the process.
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Froass Peter M.
Kulkarni Sandeep
Williams Richard C.
Barnes, III Thomas W.
Halpern Mark
International Paper Company
Miller Amy L.
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