Process for the production of paper or paperboard
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United States of America Patent
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Aug 20, 2013
Grant Date -
Dec 8, 2011
app pub date -
Jan 29, 2010
filing date -
Feb 16, 2009
priority date (Note) -
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Abstract
The present invention relates to a process for producing a paper or paperboard product which process comprises the steps of providing a first headbox with a furnish comprising fibers, which furnish forms at least one layer of the paper or paperboard product, providing the headbox with a non-fibrous high consistency composition, which composition forms at least one additional layer of the paper or paperboard product and conducting the layers onto a wire forming a multilayer web which is further dewatered and dried forming the paper or paperboard product. The invention further relates to a paper or paperboard produced according to the process and a headbox used in the process.
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