Base sheet for wallcoverings
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United States of America Patent
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-
Aug 27, 2002
Grant Date -
N/A
app pub date -
Dec 6, 1999
filing date -
Dec 6, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A paper-based sheet for wallcoverings that is made in a single pass on a standard paper making machine is described. The sheet has a print side and a barrier side and is made from softwood pulp in an amount of about 15% to about 40% by dry weight; hardwood pulp in an amount of about 30% to about 55% by dry weight; and, mineral filler in an amount of about 15% to about 30% by dry weight. A first coating is applied to the print side of the sheet in an amount of about 5 to about 20 gm/m.sup.2 dry weight. A second coating is applied to the barrier side of the sheet in an amount of about 2.5 to about 10 gm/m.sup.2 dry weight. The advantage is a strong, durable, alkaline wallcovering that is less expensive to produce, and provides a smooth print surface.
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