公开(公告)号：US20190274512A1

公开(公告)日：2019-09-12

申请号：US16344771

申请日：2017-10-31

Applicant: DAIO PAPER CORPORATION

Inventor： Naoki SHINTANI

IPC: A47L13/17 ,  D04H1/485 ,  D04H1/498

Abstract: A wet sheet for cleaning includes multiple layers and is impregnated with a chemical solution. The wet sheet includes hydrophobic fiber layers arranged in a front surface layer and a back surface layer, and a hydrophilic fiber layer arranged in an intermediate layer. The hydrophobic fiber layers have an interlaced part with a high fiber density where the hydrophobic fiber layers are interlaced with the hydrophilic fiber layer. The interlaced part has at least one slightly interlaced part and at least one highly interlaced part which is formed in a dent shape and which is interlaced with a higher fiber density. The highly interlaced part is formed in an area ratio of 10 to 20% to an area of the front surface layer or the back surface layer. Static friction resistance of the wet sheet for cleaning is lower than kinetic friction resistance of the wet sheet for cleaning.

公开(公告)号：US20200029776A1

公开(公告)日：2020-01-30

申请号：US16338425

申请日：2017-05-23

Applicant: DAIO PAPER CORPORATION

Inventor： Naoki SHINTANI

IPC: A47L13/256 ,  A47L13/44

Abstract: A cleaning head onto which a cleaning sheet for wiping a surface to be cleaned is attached is moved on the surface to be cleaned in a predetermined direction for wiping the surface to be cleaned. The cleaning head includes a first member on a side facing the surface to be cleaned and a second member arranged to abut on the first member at least partially on an opposite side of the surface to be cleaned. The second member is a member relatively more rigid than the first member. The second member has a protrusion part protruding toward the side of the first member more than the edge in the moving direction of the cleaning head. A surface of the first member on the side facing the surface to be cleaned is formed in a plane shape. The first member has a recess part which fits the protrusion part.

公开(公告)号：US20200085273A1

公开(公告)日：2020-03-19

申请号：US16618875

申请日：2018-05-23

Applicant: DAIO PAPER CORPORATION

Inventor： Shinya IZUMI ,  Naoki SHINTANI ,  Asako FUSHIMI

IPC: A47L13/16 ,  A47L13/20 ,  D04H1/498 ,  B32B3/30 ,  B32B5/26

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.

公开(公告)号：US20200046195A1

公开(公告)日：2020-02-13

申请号：US16344794

申请日：2017-10-31

Applicant: DAIO PAPER CORPORATION

Inventor： Naoki SHINTANI

IPC: A47L13/16 ,  D04H1/4374 ,  D04H1/435

Abstract: A dry sheet for cleaning includes fiber layers, each arranged in front and back surface layers, and a nonwoven fabric layer between the fiber layers. The fiber layers are interlaced with the nonwoven fabric layer in an interlaced part which includes slightly interlaced parts and highly interlaced parts. The highly interlaced parts in the front surface layer are formed at almost same spots as those in the back surface layer. The front and back surface layers each include polyethylene terephthalate fiber having a diameter of 3.3 dtex or more at a rate of 80% or more. An area ratio of the highly interlaced parts to the front and back surface layers is 20 to 90%. The highly and slightly interlaced parts each extend in a direction almost perpendicular to a wiping direction of the sheet and are formed alternately and successively in the wiping direction.

公开(公告)号：US20190313875A1

公开(公告)日：2019-10-17

申请号：US16344724

申请日：2017-10-31

Applicant: DAIO PAPER CORPORATION

Inventor： Naoki SHINTANI

IPC: A47L13/17 ,  B32B5/06 ,  D04H1/724 ,  B32B5/02 ,  D04H1/541 ,  D06M13/463 ,  D06M13/332 ,  D06M13/165 ,  D04H1/559 ,  D04H1/544 ,  D04H1/4291 ,  D04H1/435 ,  B32B5/08 ,  B32B5/26 ,  D04H1/4374

Abstract: A wet sheet for cleaning includes multiple layers and is impregnated with a chemical solution. The wet sheet for cleaning includes outer layers which are made of hydrophobic fiber and which are each arranged on a front surface and a back surface, and an inner layer which is made of hydrophilic fiber and which is arranged between the outer layers. The inner layer is provided with a hydrophilic fiber inner layer with the hydrophilic fiber and a hydrophobic fiber inner layer with hydrophobic fiber. The hydrophobic fiber inner layer is adjacent to at least one of the outer layers. The inner layer includes pulp by 50 wt % or more, has a grammage of 20 to 75 g/m2, and occupies 20 to 70% of a total mass of the wet sheet for cleaning.