Pulp treatment and process
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United States of America Patent
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Sep 11, 2007
Grant Date -
Jul 8, 2004
app pub date -
Mar 14, 2002
filing date -
Mar 15, 2001
priority date (Note) -
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Abstract
This invention provides a process for treating chemical woodpulp, or chemical cellulose including cotton linter, including the step of applying an electron processing technology (EPT) step to chemical woodpulp, or chemical cellulose, as the case may be, on an in-line basis to provide control of pulp viscosity or degree of polymerization (DP). The invention also provides a method of process control in treating the aforementioned woodpulp or cellulose, including the step of using radiation dose-viscosity relationship curve for applying an EPT step on an in-line basis. The in-line EPT step may, in one form of the invention, replace and hence eliminate a chemical DP reduction step.
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