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1.发明申请公开(公告)号：US20200088969A1
公开(公告)日：2020-03-19
申请号：US16616211
申请日：2018-03-07
Applicant: KIMOTO CO., LTD.
Inventor： Tsuyoshi NAGAHAMA , Kyoko AIHARA
Abstract: There are provided a multilayer light-blocking film and the like whose front and back surfaces are easy to discriminate while they have light-blocking layers having high optical density whose front and back are usually difficult to discriminate. A multilayer light-blocking film 100 has a multilayer structure comprising at least a substrate film 11, a light-blocking layer 21 provided on one major surface 11a side of this substrate film 11, and a light-blocking layer 31 provided on the other major surface 11b side, the light-blocking layer 21 and the light-blocking layer 31 have an optical density of 2.5 or more in total, and for the light-blocking layer 21 and the light-blocking layer 31, the color difference ΔE*ab is different by 0.2 or more in the CIE 1976 L*a*b* color system. The substrate film 11 and the light-blocking layer 21 and/or the light-blocking layer 31 preferably have inclined end surfaces 12, 22, and/or 32 so that a film width increases from the light-blocking layer 21 toward the light-blocking layer 31.
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公开(公告)号：US20180134862A1
公开(公告)日：2018-05-17
申请号：US15573604
申请日：2016-05-17
Applicant: KIMOTO CO., LTD.
Inventor： Tsuyoshi NAGAHAMA
CPC classification number: C08K3/04 , B32B27/20 , B32B2264/10 , B32B2307/41 , C08K2201/001 , C08K2201/003 , C08K2201/014 , C08L101/00 , G02B5/003 , G02B27/0018 , C08L75/04
Abstract: Provided are a light-blocking member, a black resin composition, and a black resin molded article in which the optical density per predetermined thickness is increased, and the like. In a light-blocking member (1) comprising a substrate (2) and a light-blocking membrane (3) provided on at least one surface of this substrate (2), the light-blocking membrane (3) containing a binder resin (31), a first black pigment (32) having an average particle diameter D50 of 0.4 to 2.5 μm, and a second black pigment (33) having an average particle diameter D50 smaller than this is employed. The average particle diameter D50 of the second black pigment (33) is preferably 0.01 to 0.3 μm. The optical density of the light-blocking membrane (3) is preferably 0.54 to 2.00 (μm−1) in terms of thickness.
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Patent Agency Ranking
3.发明申请公开(公告)号：US20220171104A1
公开(公告)日：2022-06-02
申请号：US17598935
申请日：2020-03-06
Applicant: KIMOTO CO., LTD.
Inventor： Kazuhiro NOZAWA , Tsuyoshi NAGAHAMA , Shuzo TOMIZAWA
Abstract: A low reflective film includes a first resin layer. The first resin layer includes a binder resin and an organic resin particle having an average particle size D50 of 2 to 20 μm. A surface of the first resin layer has a reflectance and gloss values satisfying the following relationships: (1) regular reflectance at 70 degrees: 0.0% or more and 2.5% or less (wavelength 550 nm); (2) specular gloss value at 60 degrees: 0.0% or more and 6.0% or less; specular gloss value at 75 degrees: 0.0% or more and 6.0% or less; specular gloss value at 85 degrees: 0.0% or more and 6.0% or less; and (3) a sum of a specular gloss value at 20°, a specular gloss value at 45°, the specular gloss value at 60°, the specular gloss value at 75°, and the specular gloss value at 85° is 7.5% or less.
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4.发明申请公开(公告)号：US20200088916A1
公开(公告)日：2020-03-19
申请号：US16494572
申请日：2018-03-07
Applicant: KIMOTO CO., LTD.
Inventor： Tsuyoshi NAGAHAMA
Abstract: There are provided a multilayer light-blocking film and the like whose front and back surfaces are easy to discriminate while they have light-blocking layers having high optical density whose front and back are usually difficult to discriminate. A multilayer light-blocking film 100 has a multilayer structure comprising at least a substrate film 11, a light-blocking layer 21 provided on one major surface 11a side of this substrate film 11, and a light-blocking layer 31 provided on the other major surface 11b side, the light-blocking layer 21 and the light-blocking layer 31 have an optical density of 2.5 or more in total, and the difference between the 60-degree glossiness of the light-blocking layer 21 and the 60-degree glossiness of the light-blocking layer 31 is 0.1% or more and 9.9% or less. The substrate film 11 and the light-blocking layer 21 and/or the light-blocking layer 31 preferably have inclined end surfaces 12, 22, and/or 32 so that a film width increases from the light-blocking layer 21 toward the light-blocking layer 31.
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5.发明申请公开(公告)号：US20190227202A1
公开(公告)日：2019-07-25
申请号：US16339994
申请日：2017-09-25
Applicant: KIMOTO CO., LTD.
Inventor： Tsuyoshi NAGAHAMA , Yasumaro TOSHIMA , Satoshi UEGAKI , Hiroki YAMAMOTO
Abstract: There are provided a multilayer light-blocking film and the like whose front and back surfaces are easy to discriminate while they have black light-blocking layers. A multilayer light-blocking film 100 has a multilayer structure comprising at least a substrate film 11, a black light-blocking layer 21 provided on one major surface 11a side of this substrate film 11, and a black light-blocking layer 31 provided on the other major surface 11b side. The black light-blocking layer 21 and the second black light-blocking layer 31 each have an optical density of 2.5 or more and a 60-degree glossiness of 5.0% or less, and the black light-blocking layer 21 has a 60-degree glossiness and/or a lightness L* different from the 60-degree glossiness and/or lightness L* of the black light-blocking layer 31. The substrate film 11 and the first black light-blocking layer 21 and/or the second black light-blocking layer 31 preferably have inclined end surfaces 12, 22, and/or 32 so that a film width increases from the first black light-blocking layer 21 toward the second black light-blocking layer 31.
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公开(公告)号：US20180118959A1
公开(公告)日：2018-05-03
申请号：US15573614
申请日：2016-05-17
Applicant: KIMOTO CO., LTD.
Inventor： Tsuyoshi NAGAHAMA
CPC classification number: C09D7/61 , B05D1/28 , B05D3/0413 , B05D3/067 , B05D5/06 , B05D7/04 , B05D2601/02 , B32B27/20 , C08K3/04 , C08K2201/001 , C08L33/02 , C09D4/00 , C09D5/32 , C09D7/42 , G02B5/003 , G02B7/02 , G03B11/00 , G03B11/045 , G03B17/02 , G03B21/145
Abstract: Provided are a light-blocking member, a black resin composition, and a black resin molded article having excellent durability and solvent resistance, and the like. In a light-blocking member (1) comprising a substrate (11) and a light-blocking membrane (21) provided on at least one surface of this substrate (11), the light-blocking membrane (21) containing an ultraviolet curable resin as a binder resin and containing a black pigment as a filler dispersed in this binder resin is employed. The light-blocking membrane (21) preferably further contains photo- and/or thermal polymerization initiators. In addition, the content of the filler in the light-blocking membrane (21) is preferably 10% by mass or more and 60% by mass or less in terms of solids based on all resin components contained in the light-blocking membrane (21).
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公开(公告)号：US20170146701A1
公开(公告)日：2017-05-25
申请号：US15322836
申请日：2015-05-19
Applicant: KIMOTO CO., LTD.
Inventor： Tsuyoshi NAGAHAMA , Yasumaro TOSHIMA
Abstract: Provided is a method for producing a light-blocking material for optical devices which is provided with a light-blocking coat achieving low gloss while maintaining the necessary physical properties of a light-blocking coat, i.e. a light-blocking property, even when the light-blocking coat is formed extremely thinly. In the method for producing the light-blocking material for optical devices which is provided with the light-blocking coat, a coating liquid including at least a binder resin, black microparticles, and a dye is prepared. A dye including a metal such as chrome oxide, iron oxide, or cobalt oxide is preferably used as the dye. The coating liquid is subsequently applied to a base material, and dried to form the light-blocking coat.
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