Method of making a multiple ply paper product containing an outer ply of reclaimed white office waste
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United States of America Patent
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Oct 29, 1991
Grant Date -
N/A
app pub date -
Feb 21, 1991
filing date -
Feb 21, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of producing multi-ply paper product, such as linerboard. A pulp stock of reclaimed, white office waste paper which contains fillers, such as clay and calcium carbonate, toners and ink is applied as a top ply to a base ply of Kraft pulp stock. Both pulp stocks have a pH in the range of 6.0 to 8.0. A dry strength additive, such as cooked starch, is incorporated in the plies and serves to improve the internal strength of the top ply, as well as improving the bond between the plies.
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