Cleaning sheet and process for producing the same
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United States of America Patent
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Aug 25, 2015
Grant Date -
Apr 21, 2011
app pub date -
Apr 9, 2009
filing date -
Apr 16, 2008
priority date (Note) -
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Abstract
A cleaning sheet (1A) of the invention includes: a substrate sheet (2); and at least one long-fiber bundle (3) disposed on at least one side of the substrate sheet (2) and made by aggregating long fibers (31) oriented in substantially one direction. The long-fiber bundle (3) is formed by joining the long fibers (31) together with a fiber-joining section (32) extending linearly in a direction orthogonal to the orientation direction of the long fibers (31). The cleaning sheet (1A) is formed by joining the thus-formed long-fiber bundle (3) to the substrate sheet (2) by at least one sheet-joining section (21). The cleaning sheet (1A) is formed such that the entire fiber-joining section (32) or at least a portion of the fiber-joining section (32) is not joined to the substrate sheet (2) and the sheet-joining section (21) is in perpendicular contact with the fiber-joining section (32).
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