Patent ID: 8617685

Claim:
A cleaning sheet comprising: a sheet substrate; a fiber sheet including a plurality of fibers, each of the plurality of fibers extending from the fiber sheet along a same fiber direction; and multiple brush part lines disposed on at least one surface of the sheet substrate, wherein each brush part line has multiple brush parts disposed intermittently along a first direction of the sheet substrate, the multiple brush part lines are disposed in a second direction intersecting with the first direction, and adjacent brush part lines are disposed so that brush parts of adjacent brush part lines are alternately positioned in the fiber direction and a direction orthogonal to the fiber direction; and first seal part groups and second seal part groups, wherein the first seal part groups are provided with multiple planar seal parts disposed intermittently along the fiber direction of the fiber sheet, and the second seal part groups are provided with multiple planar seal parts intermittently disposed and alternately positioned with the planar seal parts of the first seal part groups, the sheet substrate and the fiber sheet are joined together by directing the first seal part groups and the second seal part groups alternately in a direction intersecting with the fiber direction of the fiber sheet, cuts each of which having a width equal to or smaller than a width of the planar seal part are provided between the planar seal parts in each of the seal part groups so as to cut fibers to form each of the brush parts with the fibers having different lengths which are formed in opposing positions around the planar seal parts.