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US 11,452,427 B2Granted
Cleaning sheet
AssigneeDaio Paper Corporation
InventorsShinya Izumi, Naoki Shintani, Asako Fushimi
Life of this patent
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Abstract
This cleaning sheet is provided with an embossed part in which the sheet is compressed in the thickness direction. The cleaning sheet is provided with outer layers, forming the surfaces of the sheet; and an inner layer sandwiched between the outer layers. In the boundary areas between the outer layers, and the inner layer, the fibers of the layers are entangled. This allows for a sheet that better retains the raised and sunken shapes embossed therethrough and exhibits excellent collecting performance.
Claims3
A cleaning sheet for being attached to a head portion of a cleaning tool, comprising:
- an embossed part in which the sheet is compressed in a thickness direction thereof;
- outer fiber layers forming surfaces of the sheet;
- and
- an inner fiber layer sandwiched between the outer fiber layers;
- wherein fibers of the layers are entangled in boundary areas between the outer fiber layers and the inner fiber layer;
- wherein the embossed part comprises a raised emboss and a sunken emboss as viewed from one surface of the sheet, the raised emboss projecting to one surface side and the sunken emboss projecting to the other surface side of the sheet;
- wherein the raised emboss comprises a first raised part projecting from the one surface and a second raised part further projecting from a top portion of the first raised part;
- and
- the sunken emboss comprises a first sunken part projecting from the other surface and a second sunken part further projecting from a top portion of the first sunken part.
6 more elements
Dependencies are inferred from the claim text.