| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive cleaning sheet by forming a hardly collapsible uneven surface in a variety of unevenness density by one manufacturing process. SOLUTION: This is a hydroentangled nonwoven fabric cleaning sheet in which high density recess parts and low density projecting parts are alternately place in the web forming direction. The width of a recess part is 1-10 mm and a projecting part 2-30 mm. The density difference between recess parts and projecting parts is not lower than 20%.
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