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公开(公告)号：US10273633B2
公开(公告)日：2019-04-30
申请号：US15313804
申请日：2015-05-19
发明人： Go Banzashi , Shino Iwai , Yuichi Noguchi , Hayato Fushimi
IPC分类号： D21H11/20 , B32B5/28 , D21H11/18 , D21H13/30 , G02F1/1333 , G09F9/00 , G09F9/30 , H01L51/50 , H05B33/02 , B32B5/02 , B32B37/14 , D21H11/04 , D21C9/00
摘要： An object of the present invention is to provide a method for producing an ultrafine fiber-containing sheet with suppressed yellowing. The present invention provides a method for producing an ultrafine fiber-containing sheet, comprising (a) introducing a substituent having electrostatic and/or steric functionality to a fiber raw material to obtain substituent-introduced fiber; (b) machine-processing the substituent-introduced fiber obtained in the step (a) to obtain substituent-introduced ultrafine fiber; (c) preparing a sheet from the substituent-introduced ultrafine fiber obtained in the step (b); and (d) eliminating at least a portion of introduced substituents from the sheet obtained in the step (c). In a preferred aspect, the substituent having electrostatic and/or steric functionality is a phosphoric acid-derived group, and the method may further comprise, after the step (a) and before the step (c), the step of (e) changing the degree of neutralization of the substituent-introduced fiber or the substituent-introduced ultrafine fiber.
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公开(公告)号：US11426763B2
公开(公告)日：2022-08-30
申请号：US16071267
申请日：2017-01-13
发明人： Hayato Fushimi , Hirokazu Sunagawa
IPC分类号： D21F11/04 , B05D7/24 , C08J7/043 , C08J7/056 , D21H11/18 , D21H19/16 , D21H19/20 , D21H19/24
摘要： An object of the present invention is to provide a laminate having a fiber layer comprising ultrafine cellulose fibers and a resin layer, wherein the two layers have more excellent adhesion properties. The present invention relates to a laminate having at least one fiber layer comprising cellulose fibers with a fiber width of 1000 nm or less, and at least one resin layer that is contacted with one surface of the fiber layer, wherein the resin layer has an adhesion aid.
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公开(公告)号：US10532545B2
公开(公告)日：2020-01-14
申请号：US15306001
申请日：2015-04-20
发明人： Hayato Fushimi , Eiichi Mikami , Hiroki Tanaka , Jintong Han
IPC分类号： B32B7/12 , B32B27/12 , D21H27/32 , B32B5/02 , D21H19/80 , D21H19/84 , B32B15/082 , B32B15/085 , B32B15/088 , B32B15/09 , B32B15/092 , B32B15/095 , B32B15/098 , B32B15/18 , B32B15/20 , B32B27/08 , B32B27/10 , B32B27/28 , B32B27/30 , B32B27/32 , B32B27/34 , B32B27/36 , B32B27/38 , B32B27/40 , B32B1/08 , D21H11/18 , D21H11/20
摘要： It is an object to provide a composite in which the adhesion between a sheet layer and a curable resin layer or a film layer is high, and which has high strength and high transparency. The present invention provides a composite wherein a curable resin layer or a film layer is laminated on the one or both surfaces of the sheet layer with a covering layer interposed therebetween, the sheet layer containing fine fibers with an average fiber width of 2 to 1000 nm.
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公开(公告)号：US11447612B2
公开(公告)日：2022-09-20
申请号：US16315723
申请日：2017-07-07
发明人： Koh Sakai , Hayato Fushimi , Hirokazu Sunagawa
摘要： The purpose of the present invention is to provide a composite sheet in which the dimension stability when it is tensed is high and the appearance deterioration and the yellowness change are suppressed. The present invention relates to a sheet comprising; cellulose fibers having a fiber width of 1000 nm or less and having a phosphoric acid group or a phosphoric acid group-derived substituent; and a polyvinyl alcohol-based resin, wherein the sheet has a tensile elastic modulus of 3.4 GPa or more.
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公开(公告)号：US10808361B2
公开(公告)日：2020-10-20
申请号：US15779612
申请日：2016-11-25
发明人： Hirokazu Sunagawa , Koh Sakai , Hayato Fushimi , Go Banzashi
摘要： It is an object of the present invention to provide a composite sheet, which achieves all of water repellency, water resistance, transparency and mechanical strength. The present invention relates to a sheet having a fiber layer and a coating layer on the fiber layer, wherein the fiber layer comprises ultrafine cellulose fibers having a fiber width of 1000 nm or less in an amount of 60% by mass or more, the haze of the sheet is 20% or less, and the water contact angle of the surface of the sheet on the side of the coating layer which is measured 30 seconds after completion of the dropping of distilled water is 70 degrees or more.
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公开(公告)号：US10697118B2
公开(公告)日：2020-06-30
申请号：US14895359
申请日：2014-05-21
发明人： Eiichi Mikami , Mitsuru Tsunoda , Hayato Fushimi
摘要： The present invention was accomplished in order to provide a method for producing a sheet containing fine fibers, which enables production of a sheet containing fine fibers without producing wrinkles. The present invention provides a method for producing a sheet containing fine fibers comprising a coating step of coating a dispersion containing fine fibers having a fiber diameter of 1000 nm or smaller on a base material, and a drying step of drying the dispersion containing fine fibers coated on the base material to form a sheet containing fine fibers.
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公开(公告)号：US11591481B2
公开(公告)日：2023-02-28
申请号：US16633764
申请日：2018-07-13
发明人： Moe Mizukami , Hayato Fushimi , Hirokazu Sunagawa
IPC分类号： C09D7/00 , C09D7/43 , C09D7/65 , C09D7/40 , C09D101/04 , C09D101/16
摘要： It is an object of the present invention to provide a cellulose-containing composition having excellent coating suitability, a production method thereof, and a film. According to the present invention, provided is a cellulose-containing composition comprising cellulose fibers having a fiber width of 1000 nm or less and protein, wherein the protein includes an enzyme, the content of the protein is 1×10−3 parts by mass or less with respect to 1 part by mass of the cellulose fibers, and when the cellulose-containing composition having a solid concentration of 0.4% by mass is obtained, the viscosity of the cellulose-containing composition measured under conditions of 25° C. and a rotation number of 3 rpm is 10 mPa·s or more and 11000 mPa·s or less.
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公开(公告)号：US11542659B2
公开(公告)日：2023-01-03
申请号：US16863899
申请日：2020-04-30
发明人： Eiichi Mikami , Mitsuru Tsunoda , Hayato Fushimi
摘要： The present invention was accomplished in order to provide a method for producing a sheet containing fine fibers, which enables production of a sheet containing fine fibers without producing wrinkles. The present invention provides a method for producing a sheet containing fine fibers comprising a coating step of coating a dispersion containing fine fibers having a fiber diameter of 1000 nm or smaller on a base material, and a drying step of drying the dispersion containing fine fibers coated on the base material to form a sheet containing fine fibers.
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公开(公告)号：US11346053B2
公开(公告)日：2022-05-31
申请号：US16076900
申请日：2017-02-09
发明人： Koh Sakai , Go Banzashi , Hirokazu Sunagawa , Hayato Fushimi
IPC分类号： D21H21/20 , D21H17/56 , D21H17/37 , D21H17/41 , D21H11/20 , C08G69/48 , C08J5/18 , D21H11/18 , C08L1/00 , C08L77/00
摘要： It is an object of the present invention is to provide a sheet containing ultrafine cellulose fibers, which is excellent in transparency and water resistance. The present invention relates to a sheet including cellulose fibers having a fiber width of 1000 nm or less, and polyamine polyamide epihalohydrin, wherein the haze of the sheet is 6% or less.
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公开(公告)号：US11065850B2
公开(公告)日：2021-07-20
申请号：US15760898
申请日：2016-09-14
发明人： Hirokazu Sunagawa , Hayato Fushimi , Go Banzashi
IPC分类号： B32B27/10 , B32B27/02 , B32B5/02 , B32B7/12 , B32B27/08 , B32B27/12 , D21H27/30 , C09J133/14 , C09J175/14 , D21H19/82 , B32B27/30 , B32B27/36 , B32B27/38
摘要： It is an object of the present invention to provide a laminate excellent in interlayer adhesion properties. The present invention relates to a laminate comprising: a fiber layer formed of cellulose fibers having a fiber width of 1000 nm or less; a resin layer; and an adhesive layer provided between the fiber layer and the resin layer.
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